Home Zagreb Connection Number Index of Nanotubes and Regular Hexagonal Lattice
Article Open Access

Zagreb Connection Number Index of Nanotubes and Regular Hexagonal Lattice

  • Ansheng Ye , Muhammad Imran Qureshi , Asfand Fahad EMAIL logo , Adnan Aslam , Muhammad Kamran Jamil , Asim Zafar and Rida Irfan
Published/Copyright: February 22, 2019
Download Article (PDF)
Open Chemistry
From the journal Open Chemistry Volume 17 Issue 1

Abstract

Topological indices are the fixed numbers associated with the graphs. In recent years, mathematicians used indices to check the pharmacology characteristics and molecular behavior of medicines. In this article the first Zagreb connection number index is computed for the nanotubes VC5C7[ p, q] , HC5C7[ p,q] and Boron triangular Nanotubes. Also, the same index is computed for the Quadrilateral section Pmnand Pm+12ncuts from regular hexagonal lattices.

Keywords: Zagreb index; Modified first Zagreb connection number index; Molecular structure; Nanotubes

1 Introduction

The molecular structure of every chemical drug can also be represented by a graph by considering the atoms as vertices of the graph and the bond between atoms as edges of the graph. The history and the mathematical concepts for graph theory are discussed in [1, 2, 3]. These days, computation of topological indices for different chemical structures is an important task as discussed in [4, 5, 6, 7, 8, 9].

If we denote a graph by G(V (G), E (G)), then V (G) denoted the set of vertices of the graph G and E(G) denotes the set of edges of graph. The cardinality of V (G) and E(G) is called the order and size of the graph. The degree of vertex v ∈V (G) is the number of adjacent vertices to v and is denoted by d(v) . The distance between the two vertices u,v∈V (G) is denoted by d(u,v) and is defined to be the length of the shortest path between u and v.

A graph can be determined uniquely by the fixed numbers associated with it. Also, we can associate some numerical sequences with graphs. Similarly, some fixed numbers which are distance based and degree based can be associated with every graph. These invariants are called the topological indices.

Topological indices can also be associated with the molecular graphs of medicines. And with the help of these invariants, some pharmacology characteristics can be checked without using the laboratories and expensive materials.

Currently, many topological indices are being studied. The most studied among the degreed based topological indices are the first and second Zagreb indices. The first Zagreb index of graph G is denoted and defined by

M1(G)=∑v∈V(G)(d(v))2

And the second Zagreb index of graph G is denoted and defined by

M2(G)=∑uv∈E(G)d(u)d(v)

Mathematical properties of first and second Zagreb indices are studied by Gutman el at. [10,11], Akhtar et al. [12] and Zhao et al. [13]. For further study of topological indices and related results see [14, 15, 16, 17, 18, 19, 20, 21].

Throughout the paper, all the graphs under study are finite and connected. For a vertex v∈V (G) , τv represents the number of vertices in the graph which are at the distance 2 from v . τv is called the connection number of v . By using the connection number, a topological index named “the Modified first Zagreb connection index” is defined as

ZC1∗(G)=∑v∈V(G)d(v)τv

ZC1∗was first introduced by Ali et al. [22]. Wang et al. [23], computed ZC1∗for different molecular structures of dendrimers.

2 Motivation

According to the International Academy of Mathematical Chemistry, in order to identify whether any topological index is useful for prediction of chemical properties, the correlation between the values of that topological index for different octane isomers and parameter values related to certain physicochemical property of them should be considered. Generally octane isomers are convenient for such studies, because the number of the structural isomers of octane is large [24] enough to make the statistical conclusion reliable. Ali et al [22] checked the correlation ability of ZC1∗for the following thirteen physicochemical properties of octane isomers: boiling point, density, heat capacity at P constant, entropy, heat capacity at T constant, enthalpy of vaporization, acentric factor, standard enthalpy of vaporization, enthalpy of formation, octanol-water partition coefficient, standard enthalpy of formation, total surface area and molar volume. They concluded that ZC1∗yields the correlation coefficient, which is approximately 0.892 and 0.949 for entropy and acentric factor, respectively. This observation suggests that the molecular descriptor ZC1∗may be helpful in quantitative structure-property relationship and quantitative structure-activity relationship studies, and hence this descriptor may be considered for further investigations.

3 Zagreb Connection Number Index for Nano-tubes

Since the discovery of C60, carbon nanotubes as well as graphenes, the precursor of carbon fullerenes and carbon nanotubes have attracted wide attention due to their electronic properties and great potential applications[25,26]. There is a growing interest in exploring the structure and energetic of these pure carbon

Figure 1

Figure 1

Figure 2

Figure 2

clusters, carbon nanotubes with width on the nanometer scale, and carbon containing molecules because they are expected to have wide applications.

There are various types of nano-tubes which are under study. Some topological indices are found for nano-tubes [24]. The nano-tube VC5C7[ p, q],( p, q >1) is a net which is constructed by altering the C5 and C7 following the trivalent decoration. Using this type of tiling, we can cover a cylinder or a torus. Here p is a number of pentagons and q represents the number of periods. q is the number of periods in lattice.

In Figure 1, one period of VC5C7 is shown. In one period there are 4 rows. In one period there are 16 p vertices. And there are 3 p vertices which are joined at the other end of the graph. Hence |V (VC5C7 [p, q]) |⊨16 pq + 3p . In Figure 2 the graph of VC5C7[ p, q],( p, q >1) is shown when p = 3, q = 4.

Theorem 3.1

Let G=VC5C7[ p, q] , where p, q >1.

Then

ZC1∗(G)=288pq−60p

Proof: For G =VC5C7[ p, q] , out of total 16 pq + 3p vertices, 3p vertices have degree 2, 3p have degree 1 and the remaining 16 pq ‒ 3p have degree 3. The connection number for the different vertices is given in next table

From the Table 1 and definition of modified first Zagreb connection index we have

ZC1∗(G)=∑v∈V(G)d(v)τv
=2×4×3p+1×2×3p+3×4×6p+3×6×(16p−9p)

After simplification

ZC1∗(G)=288pq−60p

The nano-tube HC5C7[ p, q],( p, q >1) is a net of two dimensional lattice which is constructed by altering the C5 and C7 following the trivalent decoration. Using this type of tiling, we can cover a cylinder or a torus. Here p is a number of Heptagons and q represents the number of periods in lattice. In 2-dimensional lattice of HC5C7[ p,q] , p is the number of heptagons in one period.

In Figure 3, one period of HC5C7 is shown for better understanding. One period consisting of 4 rows and 16 p vertices. 2 p vertices are joined at the other end of the graph. Hence, |V (HC5C7 [ p, q]) |⊨16 pq + 2 p . In Figure 4, HC5C7[ p, q],( p, q >1) is given for p = q = 3.

Theorem 3.2

Let G = HC5C7[ p, q],( p, q >1) . Then

ZC1∗(HC5C7[p,q])=288pq−46p

Proof: For HC5C7[ p,q] , out of total number of vertices 16 pq + 2 p , the 2 p vertices have degree 1, 2 p vertices have degree 2 and the remaining 16 pq ‒ 2 p have degree 3. The connection number for different vertices is given in next table

Now by the Table 2 and definition of the modified first Zagreb connection index we have

ZC1∗(G)=∑v∈V(G)d(v)τv
=1×2×2p+2×4×2p+3×4×5p+3×6×(16pq−7p)

After simplification we have

ZC1∗(HC5C7[p,q])=288pq−46p
Table 1
d ( v )τvno. of vertices
243 p
123 p
346 p
3616 pq‒ 9 p
Figure 3

Figure 3

Figure 4

Figure 4

Table 2
d (v)τvNo of vertices
122 p
242 p
345 p
3616 pq ‒7 p
Figure 5

Figure 5

The Boron Nanotube was originally predicted by Boustani and Quandt et al. [27]. It was proposed that the most suitable structure of C20 is a double ring tabular structure, which can be considered as the embryo of single walled Boron Nanotubes. In 2004, Ciuparu et al. [28] successfully synthesized pure Boron single walled nanotubular structures with the diameter in the range of 3nm and thus confirmed the existence of Boron Nanotubes.

A carbon hexagonal Nanotube of order m × n is a tube obtained from a carbon hexagonal sheet of order m× n by merging the vertices of last column with respective vertices of first column. (see Figure 5)

A Boron triangular Nanotube of order m × n is obtained from the hexagonal nanotubes of order m × n by adding a new vertex in the center of each hexagon and connecting it to all vertices of the hexagon (see Figure 6).

We denote the Boron nanotube of order m× n by BT[m,n] . Boron nanotubes have an odd number of rows and an even number of columns. This fact can be observed from the following theorem.

Theorem [29]:

A Boron triangular nanotube of order m× n has 3mn2vertices and 3n(3m−2)2edges.

In the next theorem, we will calculate the Zagreb connection index of Boron triangular nanotube.

Theorem 3.3

Let G be the graph of Boron nanotube with m, n ≥ 2.. Then the Zagreb connection index is

ZC1∗(G)=6m(18n−31)

Proof: It can be observed from the molecular graph of Boron nanotubes that the 3m vertices of the first

Figure 6

Figure 6

row and last row are of degree 4, while the remaining 3mn2−3mvertices are of degree 6. All the top and bottom row vertices have connection number 7, whereas, among the remaining vertices 3m have connection number 9 and 3mn2−6mhave connection number 12. Now using the formula, we can calculate the Zagreb connection index as

ZC1∗(G)=∑v∈V(G)d(v)τv
ZC1∗(G)=4×7×3m+6×9×3m+6×12(3mn2−3m)                                      =6m(18n−31)

4 Zagreb Connection number index for regular Hexagonal Lattice

There are various types of lattices which are under study. Some topological indices are obtained for hexagonal lattices [30].

If L is a regular hexagonal lattice, let Pmnbe m × n quadrilateral section cut from L where m,n ≥ 2 . Here m represents the number of hexagons on the top and bottom sides and n is the number of hexagons on the lateral sides. If we identify the two lateral sides of Pmn,we will obtain the cylinder. Further, if we identify the top and bottom sides by identifying u10  to  u1nand v10 to v1n,

Figure 7

Figure 7

Figure 8

Figure 8

∀i =1, 2,...,m, we obtain the toroidal fullerence with mn hexagons. Shown in Figure 7.

If V(Pmn)is the set of vertices then |V(Pmn)|=2mn .

Theorem 4.1

If G=Pmnwhere m, n ≥ 2. , then

ZC1∗(G)=36mn

Proof: Since the total vertices are 2mn. From the structure it is clear that the degree of all vertices is 3. The connection number for all the vertices is 6. Hence, by definition of the modified first Zagreb connection index

     ZC1∗=∑v∈V(G)d(v)τvZC1∗(Pmn)=3×6×2mn

Let L be a regular hexagonal lattice. Let Pm+12nbe a quadrilateral section cut from L.

Where m ≥1, n ≥≥ 2 . Here m+12is the number of hexagons on the top and bottom sides and n represents the no of hexagons on the lateral sides. If we identify the top and bottom sides of Pm+12n,a cylinder will be obtained. After that if we identify the lateral sides of cylinder such that, identify u10 to vm+10and u1j to vm+1n−j,∀j ==1, 2,...,n ‒‒1 to obtain the Klien bottle. Shown in Figure 8. If V(Pm+12n)is the set of vertices then |V(Pm+12n)|=2n(m+12).

Theorem 4.2

Let G=Pm+12nwhere m>1, n>2, then

ZC1∗(G)=36n(m+12)

Proof: Since the total vertices are 2n(m+12).From the structure it is clear that the degree of all vertices is 3. The connection number for all the vertices is 6. Hence by definition of the modified first Zagreb connection index

ZC1∗=∑v∈V(G)d(v)τvZC1∗(Pm+12n)=3×6×2n(m+12)ZC1∗(Pm+12n)=36n(m+12)

5 Conclusion

Topological indices of molecular graphs are helpful to study the properties of drugs and manufacture the medicines. Therefore, they have been widely studied [1, 2, 3,5, 6, 10, 11, 12, 13, 14, 15, 29, 30, 31]. The main aim of this paper is to study the modified first Zagreb index of some famous nanotubes and quadrilateral section Pmnand Pm+12ncuts from the regular hexagonal lattice, which appears very frequently in the literature. As modified, the first Zagreb index can been used in QSPR/QSAR study and can play a crucial role in analyzing both the entropy and acentric factor for chemical compounds. The results obtained in our paper illustrate the promising prospects of application for chemical and nanosciences. For future direction, we want to remark that the same technique can be used to compute the modified first Zagreb index for different networks.

Acknowledgement

This work is supported by National Key Research and Development Program under Grant 2016YFB0800600.

The authors (Muhammad Imran Qureshi and Asfand Fahad) gratefully acknowledge ORIC, COMSATS University Islamabad, Pakistan for supporting this research under the grant of project number 16-52/CRGP/CIIT/VEH/17/1141.

  1. Ethical approval: The conducted research is not related to either human or animal use.

  2. Conflict of interest: Authors declare no conflict of interest.

Reference

[1] Gutman I., Polansky O. E., Mathematical Concepts in organic chemistry, Berlin: Springer, 1986.10.1007/978-3-642-70982-1Search in Google Scholar

[2] Goodman J. E., Orourke J., Handbook of Discrete and Computational Geometry, CRC Press LLC, 1997, 225-242.Search in Google Scholar

[3] Trinajstic N., Chemical graph theory, 2nd revised ed., Florida: CRC Press, Boca Raton, 1993.Search in Google Scholar

[4] Furtula B., Gutman I., A forgotten topological index, J. Math. Chem., 2015, 53(4), 1184-1190.10.1007/s10910-015-0480-zSearch in Google Scholar

[5] Goubko M., Minimizing degree-based topological indices for trees with given number of pendent vertices, MATCH Commun. Math. Comput. Chem, 2014, 71, 33-46.Search in Google Scholar

[6] Munir M., Nazeer W., Kang S. M., Qureshi M. I., Nizami A. R., Kwun Y. C., Some Invariants of Jahangir Graphs, Symmetry, 2017, 9(17), 1-15.10.3390/sym9010017Search in Google Scholar

[7] Gao W., Siddiqui M. K., Imran M., Jamil M. K., Farahani M. R., Forgotten topological index of chemical structure in drugs, Saudi Pharm. Journal, 2017, 25, 280-286.10.1016/j.jsps.2016.04.012Search in Google Scholar PubMed PubMed Central

[8] Bashir Y., Aslam A., Kamran M., Qureshi M. I., Jahangir A., Rafiq M., et al., On Forgotten Topological Indices of Some Dendrimers Structure, Molecules, 2017, 22(867), 1-8.10.3390/molecules22060867Search in Google Scholar PubMed PubMed Central

[9] Shao Z., Wu P., Zhang X., Dimitrov D., Liu J., On the maximum ABC index of graphs with prescribed size and without pendent vertices, IEEE Access, 2018, 6, 27604--27616.10.1109/ACCESS.2018.2831910Search in Google Scholar

[10] Gutman I., Das K. C., The first zagreb index 30 years after, MATCH Commun. Math. Comput. Chem., 2004, 50, 83-92.Search in Google Scholar

[11] Gutman I., Jamil M. K., Akhtar N., Graph with fixed number of pendent vertices and minimal first zagreb index, Transactions on Combinatorics, 2015, 4(1).Search in Google Scholar

[12] Akhtar N., Jamil M. K., Tomescu I., External first and second Zagreb indices of apex trees, U. P. B. Sci. Bull. Series A, 2016, 78(4), 221-230.Search in Google Scholar

[13] Zhao Q., Li S., Sharp biunds for the Zagreb indices of bicyclic graphs with k-pendent vertices, Discrete Appl. Math., 2010, 158, 1953-1962.10.1016/j.dam.2010.08.005Search in Google Scholar

[14] Aslam A., Jamil M. K., Gao W., Nazeer W., Topological Aspects of Some dendrimer structures, Nanotechnology Reviews, 2018, 7(2), 123-128.10.1515/ntrev-2017-0184Search in Google Scholar

[15] Aslam A., Ahmad S., Gao W., On Certain Topological Indices of Boron Triangular Nanotubes, Z. Naturforsch, 2017, 72(8), 711-716.10.1515/zna-2017-0135Search in Google Scholar

[16] Aslam A., Bashir Y., Ahmad S., Gao W., On Topological Indices of Certain Dendrimer Structures, Z. Naturforsch, 2017, 72(6), 559–566.10.1515/zna-2017-0081Search in Google Scholar

[17] Sardar M. S., Zafar S., Farahani M. R., The Generalized Zagreb Index of Capra-Designed Planar Benzenoid Series C a k, Open J. Math. Sci.,2017, 1(1), 44-51.10.30538/oms2017.0005Search in Google Scholar

[18] Noreen S., Mahmood A., Zagreb Polynomials and Redefined Zagreb Indices for the line graph of Carbon Nanocones, Open J. Math. Anal., 2018, 2(1), 67-76.10.30538/psrp-oma2018.0012Search in Google Scholar

[19] Gao W., Asif M., Nazeer W., The Study of Honey Comb Derived Network via Topological Indices. Open J. Math. Anal., 2018, 2(2), 10-26.10.30538/psrp-oma2018.0014Search in Google Scholar

[20] Aslam A., Guirao J. L. G., Ahmad S., Gao W., Topological indices of line graph of subdivision graph of complete bipartite graphs, Applied Mathematics and Information sciences, 2017, 11(6), 1631-1636.10.18576/amis/110610Search in Google Scholar

[21] De N., Hyper Zagreb Index of Bridge and Chain Grpahs, Open J. Math. Sci., 2018, 2(1), 1-17.10.30538/oms2018.0013Search in Google Scholar

[22] Ali A., Trinsjstic N., A novel/old modification of the first Zagreb index, arXiv:1705-10430v1.Search in Google Scholar

[23] Wang X. L., Liu J. B., Jamil M. K., Qureshi M. I., Fahad A., Farahani M. R., Zagreb Connection index of Drugs related chaemical structures, Turkish Journal of Medical Sciences (In Press).Search in Google Scholar

[24] Hayat S., Imran M., Computation of Certain Topological Indices of Nanotubes Covered by C5 and C7, J. Computational and Theoretical Nanoscience, 2015, 12, 1-9.10.1166/jctn.2015.3761Search in Google Scholar

[25] Lijima S., Helical Microtubules of Graphitic Carbon, Nature, 1991, 354, 56-58.10.1038/354056a0Search in Google Scholar

[26] Baughman R. H., Zakhidov A. A., De Heer W. A., Carbon Nanotubes--the Route toward Applications, Science, 2002, 297(5582), 787-792.10.1126/science.1060928Search in Google Scholar PubMed

[27] Boustani I., Quandt A., Hernandez E., Rubio A., New boron based nanostructured materials, The Journal of Chemical Physics, 1999, 110(3176).10.1063/1.477976Search in Google Scholar

[28] Ciuparu D., Klie R. F., Zhu Y., Pfefferle L., Synthesis of Pure Boron Single-Wall Nanotubes, The Journal of Physical Chemistry, 2004, 108(13), 3967-3969.10.1021/jp049301bSearch in Google Scholar

[29] Manuel P., Computational Aspects of Carbon and Boron Nanotubes, Molecules, 2010, 15(12), 8709-8722.10.3390/molecules15128709Search in Google Scholar PubMed PubMed Central

[30] Baca M., Horvathova J., Mokrisova M., Suhanyiova A., On topological indices of fullerenes, Applied Mathematics and Computation, 2015, 251, 154-161.10.1016/j.amc.2014.11.069Search in Google Scholar

[31] Shao Z., Wu P., Gao Y., Gutman I., Zhang X., On the maximum ABC index of graphs without pendent vertices, Applied Mathematics and computation, 2017, 315, 298-312.10.1016/j.amc.2017.07.075Search in Google Scholar

Received: 2018-10-08
Accepted: 2018-11-08
Published Online: 2019-02-22

© 2019 Ansheng Ye et al., published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 Public License.

Articles in the same Issue

  1. Regular Articles
  2. Research on correlation of compositions with oestrogenic activity of Cistanche based on LC/Q-TOF-MS/MS technology
  3. Efficacy of Pyrus elaeagnifolia subsp. elaeagnifolia in acetic acid–induced colitis model
  4. Anti-inflammatory and antinociceptive features of Bryonia alba L.: As a possible alternative in treating rheumatism
  5. High efficiency liposome fusion induced by reducing undesired membrane peptides interaction
  6. Prediction of the Blood-Brain Barrier Permeability Using RP-18 Thin Layer Chromatography
  7. Phytic Acid Extracted from Rice Bran as a Growth Promoter for Euglena gracilis
  8. Development of a validated spectrofluorimetric method for assay of sotalol hydrochloride in tablets and human plasma: application for stability-indicating studies
  9. Topological Indices of Hyaluronic Acid-Paclitaxel Conjugates’ Molecular Structure in Cancer Treatment
  10. Thermodynamic properties of the bubble growth process in a pool boiling of water-ethanol mixture two-component system
  11. Critical Roles of the PI3K-Akt-mTOR Signaling Pathway in Apoptosis and Autophagy of Astrocytes Induced by Methamphetamine
  12. Characteristics of Stable Hydrogen and Oxygen Isotopes of Soil Moisture under Different Land Use in Dry Hot Valley of Yuanmou
  13. Specific, highly sensitive and simple spectrofluorimetric method for quantification of daclatasvir in HCV human plasma patients and in tablets dosage form
  14. Chromium-modified cobalt molybdenum nitrides as catalysts for ammonia synthesis
  15. Langerhans cell-like dendritic cells treated with ginsenoside Rh2 regulate the differentiation of Th1 and Th2 cells in vivo
  16. Identification of Powdery Mildew Blumeria graminis f. sp. tritici Resistance Genes in Selected Wheat Varieties and Development of Multiplex PCR
  17. Computational Analysis of new Degree-based descriptors of oxide networks
  18. The Use Of Chemical Composition And Additives To Classify Petrol And Diesel Using Gas Chromatography–Mass Spectrometry And Chemometric Analysis: A Uk Study
  19. Minimal Energy Tree with 4 Branched Vertices
  20. Jatropha seed oil derived poly(esteramide-urethane)/ fumed silica nanocomposite coatings for corrosion protection
  21. Calculating topological indices of certain OTIS interconnection networks
  22. Energy storage analysis of R125 in UIO-66 and MOF-5 nanoparticles: A molecular simulation study
  23. Velvet Antler compounds targeting major cell signaling pathways in osteosarcoma - a new insight into mediating the process of invasion and metastasis in OS
  24. Effects of Azadirachta Indica Leaf Extract, Capping Agents, on the Synthesis of Pure And Cu Doped ZnO-Nanoparticles: A Green Approach and Microbial Activity
  25. Aqueous Micro-hydration of Na+(H2O)n=1-7 Clusters: DFT Study
  26. A proposed image-based detection of methamidophos pesticide using peroxyoxalate chemiluminescence system
  27. Phytochemical screening and estrogenic activity of total glycosides of Cistanche deserticola
  28. Biological evaluation of a series of benzothiazole derivatives as mosquitocidal agents
  29. Chemical pretreatments of Trapa bispinosa's peel (TBP) biosorbent to enhance adsorption capacity for Pb(ll)
  30. Dynamic Changes in MMP1 and TIMP1 in the Antifibrotic Process of Dahuang Zhechong Pill in Rats with Liver Fibrosis
  31. The Optimization and Production of Ginkgolide B Lipid Microemulsion
  32. Photodynamic Therapy Enhanced the Antitumor Effects of Berberine on HeLa Cells
  33. Chiral and Achiral Enantiomeric Separation of (±)-Alprenolol
  34. Correlation of Water Fluoride with Body Fluids, Dental Fluorosis and FT4, FT3 –TSH Disruption among Children in an Endemic Fluorosis area in Pakistan
  35. A one-step incubation ELISA kit for rapid determination of dibutyl phthalate in water, beverage and liquor
  36. Free Radical Scavenging Activity of Essential Oil of Eugenia caryophylata from Amboina Island and Derivatives of Eugenol
  37. Effects of Blue and Red Light On Growth And Nitrate Metabolism In Pakchoi
  38. miRNA-199a-5p functions as a tumor suppressor in prolactinomas
  39. Solar photodegradation of carbamazepine from aqueous solutions using a compound parabolic concentrator equipped with a sun tracking system
  40. Influence of sub-inhibitory concentration of selected plant essential oils on the physical and biochemical properties of Pseudomonas orientalis
  41. Preparation and spectroscopic studies of Fe(II), Ru(II), Pd(II) and Zn(II) complexes of Schiff base containing terephthalaldehyde and their transfer hydrogenation and Suzuki-Miyaura coupling reaction
  42. Complex formation in a liquid-liquid extraction-chromogenic system for vanadium(IV)
  43. Synthesis, characterization (IR, 1H, 13C & 31P NMR), fungicidal, herbicidal and molecular docking evaluation of steroid phosphorus compounds
  44. Analysis and Biological Evaluation of Arisaema Amuremse Maxim Essential Oil
  45. A preliminary assessment of potential ecological risk and soil contamination by heavy metals around a cement factory, western Saudi Arabia
  46. Anti- inflammatory effect of Prunus tomentosa Thunb total flavones in LPS-induced RAW264.7 cells
  47. Collaborative Influence of Elevated CO2 Concentration and High Temperature on Potato Biomass Accumulation and Characteristics
  48. Methods of extraction, physicochemical properties of alginates and their applications in biomedical field – a review
  49. Characteristics of liposomes derived from egg yolk
  50. Preparation of ternary ZnO/Ag/cellulose and its enhanced photocatalytic degradation property on phenol and benzene in VOCs
  51. Influence of Human Serum Albumin Glycation on the Binding Affinities for Natural Flavonoids
  52. Synthesis and antioxidant activity of 2-methylthio-pyrido[3,2-e][1,2,4] triazolo[1,5-a]pyrimidines
  53. Comparative study on the antioxidant activities of ten common flower teas from China
  54. Molecular Properties of Symmetrical Networks Using Topological Polynomials
  55. Synthesis of Co3O4 Nano Aggregates by Co-precipitation Method and its Catalytic and Fuel Additive Applications
  56. Phytochemical analysis, Antioxidant and Antiprotoscolices potential of ethanol extracts of selected plants species against Echinococcus granulosus: In-vitro study
  57. Silver nanoparticles enhanced fluorescence for sensitive determination of fluoroquinolones in water solutions
  58. Simultaneous Quantification of the New Psychoactive Substances 3-FMC, 3-FPM, 4-CEC, and 4-BMC in Human Blood using GC-MS
  59. Biodiesel Production by Lipids From Indonesian strain of Microalgae Chlorella vulgaris
  60. Miscibility studies of polystyrene/polyvinyl chloride blend in presence of organoclay
  61. Antibacterial Activities of Transition Metal complexes of Mesocyclic Amidine 1,4-diazacycloheptane (DACH)
  62. Novel 1,8-Naphthyridine Derivatives: Design, Synthesis and in vitro screening of their cytotoxic activity against MCF7 cell line
  63. Investigation of Stress Corrosion Cracking Behaviour of Mg-Al-Zn Alloys in Different pH Environments by SSRT Method
  64. Various Combinations of Flame Retardants for Poly (vinyl chloride)
  65. Phenolic compounds and biological activities of rye (Secale cereale L.) grains
  66. Oxidative degradation of gentamicin present in water by an electro-Fenton process and biodegradability improvement
  67. Optimizing Suitable Conditions for the Removal of Ammonium Nitrogen by a Microbe Isolated from Chicken Manure
  68. Anti-inflammatory, antipyretic, analgesic, and antioxidant activities of Haloxylon salicornicum aqueous fraction
  69. The anti-corrosion behaviour of Satureja montana L. extract on iron in NaCl solution
  70. Interleukin-4, hemopexin, and lipoprotein-associated phospholipase A2 are significantly increased in patients with unstable carotid plaque
  71. A comparative study of the crystal structures of 2-(4-(2-(4-(3-chlorophenyl)pipera -zinyl)ethyl) benzyl)isoindoline-1,3-dione by synchrotron radiation X-ray powder diffraction and single-crystal X-ray diffraction
  72. Conceptual DFT as a Novel Chemoinformatics Tool for Studying the Chemical Reactivity Properties of the Amatoxin Family of Fungal Peptides
  73. Occurrence of Aflatoxin M1 in Milk-based Mithae samples from Pakistan
  74. Kinetics of Iron Removal From Ti-Extraction Blast Furnace Slag by Chlorination Calcination
  75. Increasing the activity of DNAzyme based on the telomeric sequence: 2’-OMe-RNA and LNA modifications
  76. Exploring the optoelectronic properties of a chromene-appended pyrimidone derivative for photovoltaic applications
  77. Effect of He Qi San on DNA Methylation in Type 2 Diabetes Mellitus Patients with Phlegm-blood Stasis Syndrome
  78. Cyclodextrin potentiometric sensors based on selective recognition sites for procainamide: Comparative and theoretical study
  79. Greener synthesis of dimethyl carbonate from carbon dioxide and methanol using a tunable ionic liquid catalyst
  80. Nonisothermal Cold Crystallization Kinetics of Poly(lactic acid)/Bacterial Poly(hydroxyoctanoate) (PHO)/Talc
  81. Enhanced adsorption of sulfonamide antibiotics in water by modified biochar derived from bagasse
  82. Study on the Mechanism of Shugan Xiaozhi Fang on Cells with Non-alcoholic Fatty Liver Disease
  83. Comparative Effects of Salt and Alkali Stress on Antioxidant System in Cotton (Gossypium Hirsutum L.) Leaves
  84. Optimization of chromatographic systems for analysis of selected psychotropic drugs and their metabolites in serum and saliva by HPLC in order to monitor therapeutic drugs
  85. Electrocatalytic Properties of Ni-Doped BaFe12O19 for Oxygen Evolution in Alkaline Solution
  86. Study on the removal of high contents of ammonium from piggery wastewater by clinoptilolite and the corresponding mechanisms
  87. Phytochemistry and toxicological assessment of Bryonia dioica roots used in north-African alternative medicine
  88. The essential oil composition of selected Hemerocallis cultivars and their biological activity
  89. Mechanical Properties of Carbon Fiber Reinforced Nanocrystalline Nickel Composite Electroforming Deposit
  90. Anti-c-myc efficacy block EGFL7 induced prolactinoma tumorigenesis
  91. Topical Issue on Applications of Mathematics in Chemistry
  92. Zagreb Connection Number Index of Nanotubes and Regular Hexagonal Lattice
  93. The Sanskruti index of trees and unicyclic graphs
  94. Valency-based molecular descriptors of Bakelite network BNmn
  95. Computing Topological Indices for Para-Line Graphs of Anthracene
  96. Zagreb Polynomials and redefined Zagreb indices of Dendrimers and Polyomino Chains
  97. Topological Descriptor of 2-Dimensional Silicon Carbons and Their Applications
  98. Topological invariants for the line graphs of some classes of graphs
  99. Words for maximal Subgroups of Fi24‘
  100. Generators of Maximal Subgroups of Harada-Norton and some Linear Groups
  101. Special Issue on POKOCHA 2018
  102. Influence of Production Parameters on the Content of Polyphenolic Compounds in Extruded Porridge Enriched with Chokeberry Fruit (Aronia melanocarpa (Michx.) Elliott)
  103. Effects of Supercritical Carbon Dioxide Extraction (SC-CO2) on the content of tiliroside in the extracts from Tilia L. flowers
  104. Impact of xanthan gum addition on phenolic acids composition and selected properties of new gluten-free maize-field bean pasta
  105. Impact of storage temperature and time on Moldavian dragonhead oil – spectroscopic and chemometric analysis
  106. The effect of selected substances on the stability of standard solutions in voltammetric analysis of ascorbic acid in fruit juices
  107. Determination of the content of Pb, Cd, Cu, Zn in dairy products from various regions of Poland
  108. Special Issue on IC3PE 2018 Conference
  109. The Photocatalytic Activity of Zns-TiO2 on a Carbon Fiber Prepared by Chemical Bath Deposition
  110. N-octyl chitosan derivatives as amphiphilic carrier agents for herbicide formulations
  111. Kinetics and Mechanistic Study of Hydrolysis of Adenosine Monophosphate Disodium Salt (AMPNa2) in Acidic and Alkaline Media
  112. Antimalarial Activity of Andrographis Paniculata Ness‘s N-hexane Extract and Its Major Compounds
  113. Special Issue on ABB2018 Conference
  114. Special Issue on ICCESEN 2017
  115. Theoretical Diagnostics of Second and Third-order Hyperpolarizabilities of Several Acid Derivatives
  116. Determination of Gamma Rays Efficiency Against Rhizoctonia solani in Potatoes
  117. Studies On Compatibilization Of Recycled Polyethylene/Thermoplastic Starch Blends By Using Different Compatibilizer
  118. Liquid−Liquid Extraction of Linalool from Methyl Eugenol with 1-Ethyl-3-methylimidazolium Hydrogen Sulfate [EMIM][HSO4] Ionic Liquid
  119. Synthesis of Graphene Oxide Through Ultrasonic Assisted Electrochemical Exfoliation
  120. Special Issue on ISCMP 2018
  121. Synthesis and antiproliferative evaluation of some 1,4-naphthoquinone derivatives against human cervical cancer cells
  122. The influence of the grafted aryl groups on the solvation properties of the graphyne and graphdiyne - a MD study
  123. Electrochemical modification of platinum and glassy carbon surfaces with pyridine layers and their use as complexing agents for copper (II) ions
  124. Effect of Electrospinning Process on Total Antioxidant Activity of Electrospun Nanofibers Containing Grape Seed Extract
  125. Effect Of Thermal Treatment Of Trepel At Temperature Range 800-1200˚C
  126. Topical Issue on Agriculture
  127. The effect of Cladophora glomerata exudates on the amino acid composition of Cladophora fracta and Rhizoclonium sp.
  128. Influence of the Static Magnetic Field and Algal Extract on the Germination of Soybean Seeds
  129. The use of UV-induced fluorescence for the assessment of homogeneity of granular mixtures
  130. The use of microorganisms as bio-fertilizers in the cultivation of white lupine
  131. Lyophilized apples on flax oil and ethyl esters of flax oil - stability and antioxidant evaluation
  132. Production of phosphorus biofertilizer based on the renewable materials in large laboratory scale
  133. Human health risk assessment of potential toxic elements in paddy soil and rice (Oryza sativa) from Ugbawka fields, Enugu, Nigeria
  134. Recovery of phosphates(V) from wastewaters of different chemical composition
  135. Special Issue on the 4th Green Chemistry 2018
  136. Dead zone for hydrogenation of propylene reaction carried out on commercial catalyst pellets
  137. Improved thermally stable oligoetherols from 6-aminouracil, ethylene carbonate and boric acid
  138. The role of a chemical loop in removal of hazardous contaminants from coke oven wastewater during its treatment
  139. Combating paraben pollution in surface waters with a variety of photocatalyzed systems: Looking for the most efficient technology
  140. Special Issue on Chemistry Today for Tomorrow 2019
  141. Applying Discriminant and Cluster Analyses to Separate Allergenic from Non-allergenic Proteins
  142. Chemometric Expertise Of Clinical Monitoring Data Of Prolactinoma Patients
  143. Chemomertic Risk Assessment of Soil Pollution
  144. New composite sorbent for speciation analysis of soluble chromium in textiles
  145. Photocatalytic activity of NiFe2O4 and Zn0.5Ni0.5Fe2O4 modified by Eu(III) and Tb(III) for decomposition of Malachite Green
  146. Photophysical and antibacterial activity of light-activated quaternary eosin Y
  147. Spectral properties and biological activity of La(III) and Nd(III) Monensinates
  148. Special Issue on Monitoring, Risk Assessment and Sustainable Management for the Exposure to Environmental Toxins
  149. Soil organic carbon mineralization in relation to microbial dynamics in subtropical red soils dominated by differently sized aggregates
  150. A potential reusable fluorescent aptasensor based on magnetic nanoparticles for ochratoxin A analysis
  151. Special Issue on 13th JCC 2018
  152. Fluorescence study of 5-nitroisatin Schiff base immobilized on SBA-15 for sensing Fe3+
  153. Thermal and Morphology Properties of Cellulose Nanofiber from TEMPO-oxidized Lower part of Empty Fruit Bunches (LEFB)
  154. Encapsulation of Vitamin C in Sesame Liposomes: Computational and Experimental Studies
  155. A comparative study of the utilization of synthetic foaming agent and aluminum powder as pore-forming agents in lightweight geopolymer synthesis
  156. Synthesis of high surface area mesoporous silica SBA-15 by adjusting hydrothermal treatment time and the amount of polyvinyl alcohol
  157. Review of large-pore mesostructured cellular foam (MCF) silica and its applications
  158. Ion Exchange of Benzoate in Ni-Al-Benzoate Layered Double Hydroxide by Amoxicillin
  159. Synthesis And Characterization Of CoMo/Mordenite Catalyst For Hydrotreatment Of Lignin Compound Models
  160. Production of Biodiesel from Nyamplung (Calophyllum inophyllum L.) using Microwave with CaO Catalyst from Eggshell Waste: Optimization of Transesterification Process Parameters
  161. The Study of the Optical Properties of C60 Fullerene in Different Organic Solvents
  162. Composite Material Consisting of HKUST-1 and Indonesian Activated Natural Zeolite and its Application in CO2 Capture
  163. Topical Issue on Environmental Chemistry
  164. Ionic liquids modified cobalt/ZSM-5 as a highly efficient catalyst for enhancing the selectivity towards KA oil in the aerobic oxidation of cyclohexane
  165. Application of Thermal Resistant Gemini Surfactants in Highly Thixotropic Water-in-oil Drilling Fluid System
  166. Screening Study on Rheological Behavior and Phase Transition Point of Polymer-containing Fluids produced under the Oil Freezing Point Temperature
  167. The Chemical Softening Effect and Mechanism of Low Rank Coal Soaked in Alkaline Solution
  168. The Influence Of NO/O2 On The NOx Storage Properties Over A Pt-Ba-Ce/γ-Al2O3 Catalyst
  169. Special Issue on the International conference CosCI 2018
  170. Design of SiO2/TiO2 that Synergistically Increases The Hydrophobicity of Methyltrimethoxysilane Coated Glass
  171. Antidiabetes and Antioxidant agents from Clausena excavata root as medicinal plant of Myanmar
  172. Development of a Gold Immunochromatographic Assay Method Using Candida Biofilm Antigen as a Bioreceptor for Candidiasis in Rats
  173. Special Issue on Applied Biochemistry and Biotechnology 2019
  174. Adsorption of copper ions on Magnolia officinalis residues after solid-phase fermentation with Phanerochaete chrysosporium
  175. Erratum
  176. Erratum to: Sand Dune Characterization For Preparing Metallurgical Grade Silicon
https://doi.org/10.1515/chem-2019-0007
Keywords for this article
Zagreb index; Modified first Zagreb connection number index; Molecular structure; Nanotubes
Creative Commons
BY 4.0

Articles in the same Issue

  1. Regular Articles
  2. Research on correlation of compositions with oestrogenic activity of Cistanche based on LC/Q-TOF-MS/MS technology
  3. Efficacy of Pyrus elaeagnifolia subsp. elaeagnifolia in acetic acid–induced colitis model
  4. Anti-inflammatory and antinociceptive features of Bryonia alba L.: As a possible alternative in treating rheumatism
  5. High efficiency liposome fusion induced by reducing undesired membrane peptides interaction
  6. Prediction of the Blood-Brain Barrier Permeability Using RP-18 Thin Layer Chromatography
  7. Phytic Acid Extracted from Rice Bran as a Growth Promoter for Euglena gracilis
  8. Development of a validated spectrofluorimetric method for assay of sotalol hydrochloride in tablets and human plasma: application for stability-indicating studies
  9. Topological Indices of Hyaluronic Acid-Paclitaxel Conjugates’ Molecular Structure in Cancer Treatment
  10. Thermodynamic properties of the bubble growth process in a pool boiling of water-ethanol mixture two-component system
  11. Critical Roles of the PI3K-Akt-mTOR Signaling Pathway in Apoptosis and Autophagy of Astrocytes Induced by Methamphetamine
  12. Characteristics of Stable Hydrogen and Oxygen Isotopes of Soil Moisture under Different Land Use in Dry Hot Valley of Yuanmou
  13. Specific, highly sensitive and simple spectrofluorimetric method for quantification of daclatasvir in HCV human plasma patients and in tablets dosage form
  14. Chromium-modified cobalt molybdenum nitrides as catalysts for ammonia synthesis
  15. Langerhans cell-like dendritic cells treated with ginsenoside Rh2 regulate the differentiation of Th1 and Th2 cells in vivo
  16. Identification of Powdery Mildew Blumeria graminis f. sp. tritici Resistance Genes in Selected Wheat Varieties and Development of Multiplex PCR
  17. Computational Analysis of new Degree-based descriptors of oxide networks
  18. The Use Of Chemical Composition And Additives To Classify Petrol And Diesel Using Gas Chromatography–Mass Spectrometry And Chemometric Analysis: A Uk Study
  19. Minimal Energy Tree with 4 Branched Vertices
  20. Jatropha seed oil derived poly(esteramide-urethane)/ fumed silica nanocomposite coatings for corrosion protection
  21. Calculating topological indices of certain OTIS interconnection networks
  22. Energy storage analysis of R125 in UIO-66 and MOF-5 nanoparticles: A molecular simulation study
  23. Velvet Antler compounds targeting major cell signaling pathways in osteosarcoma - a new insight into mediating the process of invasion and metastasis in OS
  24. Effects of Azadirachta Indica Leaf Extract, Capping Agents, on the Synthesis of Pure And Cu Doped ZnO-Nanoparticles: A Green Approach and Microbial Activity
  25. Aqueous Micro-hydration of Na+(H2O)n=1-7 Clusters: DFT Study
  26. A proposed image-based detection of methamidophos pesticide using peroxyoxalate chemiluminescence system
  27. Phytochemical screening and estrogenic activity of total glycosides of Cistanche deserticola
  28. Biological evaluation of a series of benzothiazole derivatives as mosquitocidal agents
  29. Chemical pretreatments of Trapa bispinosa's peel (TBP) biosorbent to enhance adsorption capacity for Pb(ll)
  30. Dynamic Changes in MMP1 and TIMP1 in the Antifibrotic Process of Dahuang Zhechong Pill in Rats with Liver Fibrosis
  31. The Optimization and Production of Ginkgolide B Lipid Microemulsion
  32. Photodynamic Therapy Enhanced the Antitumor Effects of Berberine on HeLa Cells
  33. Chiral and Achiral Enantiomeric Separation of (±)-Alprenolol
  34. Correlation of Water Fluoride with Body Fluids, Dental Fluorosis and FT4, FT3 –TSH Disruption among Children in an Endemic Fluorosis area in Pakistan
  35. A one-step incubation ELISA kit for rapid determination of dibutyl phthalate in water, beverage and liquor
  36. Free Radical Scavenging Activity of Essential Oil of Eugenia caryophylata from Amboina Island and Derivatives of Eugenol
  37. Effects of Blue and Red Light On Growth And Nitrate Metabolism In Pakchoi
  38. miRNA-199a-5p functions as a tumor suppressor in prolactinomas
  39. Solar photodegradation of carbamazepine from aqueous solutions using a compound parabolic concentrator equipped with a sun tracking system
  40. Influence of sub-inhibitory concentration of selected plant essential oils on the physical and biochemical properties of Pseudomonas orientalis
  41. Preparation and spectroscopic studies of Fe(II), Ru(II), Pd(II) and Zn(II) complexes of Schiff base containing terephthalaldehyde and their transfer hydrogenation and Suzuki-Miyaura coupling reaction
  42. Complex formation in a liquid-liquid extraction-chromogenic system for vanadium(IV)
  43. Synthesis, characterization (IR, 1H, 13C & 31P NMR), fungicidal, herbicidal and molecular docking evaluation of steroid phosphorus compounds
  44. Analysis and Biological Evaluation of Arisaema Amuremse Maxim Essential Oil
  45. A preliminary assessment of potential ecological risk and soil contamination by heavy metals around a cement factory, western Saudi Arabia
  46. Anti- inflammatory effect of Prunus tomentosa Thunb total flavones in LPS-induced RAW264.7 cells
  47. Collaborative Influence of Elevated CO2 Concentration and High Temperature on Potato Biomass Accumulation and Characteristics
  48. Methods of extraction, physicochemical properties of alginates and their applications in biomedical field – a review
  49. Characteristics of liposomes derived from egg yolk
  50. Preparation of ternary ZnO/Ag/cellulose and its enhanced photocatalytic degradation property on phenol and benzene in VOCs
  51. Influence of Human Serum Albumin Glycation on the Binding Affinities for Natural Flavonoids
  52. Synthesis and antioxidant activity of 2-methylthio-pyrido[3,2-e][1,2,4] triazolo[1,5-a]pyrimidines
  53. Comparative study on the antioxidant activities of ten common flower teas from China
  54. Molecular Properties of Symmetrical Networks Using Topological Polynomials
  55. Synthesis of Co3O4 Nano Aggregates by Co-precipitation Method and its Catalytic and Fuel Additive Applications
  56. Phytochemical analysis, Antioxidant and Antiprotoscolices potential of ethanol extracts of selected plants species against Echinococcus granulosus: In-vitro study
  57. Silver nanoparticles enhanced fluorescence for sensitive determination of fluoroquinolones in water solutions
  58. Simultaneous Quantification of the New Psychoactive Substances 3-FMC, 3-FPM, 4-CEC, and 4-BMC in Human Blood using GC-MS
  59. Biodiesel Production by Lipids From Indonesian strain of Microalgae Chlorella vulgaris
  60. Miscibility studies of polystyrene/polyvinyl chloride blend in presence of organoclay
  61. Antibacterial Activities of Transition Metal complexes of Mesocyclic Amidine 1,4-diazacycloheptane (DACH)
  62. Novel 1,8-Naphthyridine Derivatives: Design, Synthesis and in vitro screening of their cytotoxic activity against MCF7 cell line
  63. Investigation of Stress Corrosion Cracking Behaviour of Mg-Al-Zn Alloys in Different pH Environments by SSRT Method
  64. Various Combinations of Flame Retardants for Poly (vinyl chloride)
  65. Phenolic compounds and biological activities of rye (Secale cereale L.) grains
  66. Oxidative degradation of gentamicin present in water by an electro-Fenton process and biodegradability improvement
  67. Optimizing Suitable Conditions for the Removal of Ammonium Nitrogen by a Microbe Isolated from Chicken Manure
  68. Anti-inflammatory, antipyretic, analgesic, and antioxidant activities of Haloxylon salicornicum aqueous fraction
  69. The anti-corrosion behaviour of Satureja montana L. extract on iron in NaCl solution
  70. Interleukin-4, hemopexin, and lipoprotein-associated phospholipase A2 are significantly increased in patients with unstable carotid plaque
  71. A comparative study of the crystal structures of 2-(4-(2-(4-(3-chlorophenyl)pipera -zinyl)ethyl) benzyl)isoindoline-1,3-dione by synchrotron radiation X-ray powder diffraction and single-crystal X-ray diffraction
  72. Conceptual DFT as a Novel Chemoinformatics Tool for Studying the Chemical Reactivity Properties of the Amatoxin Family of Fungal Peptides
  73. Occurrence of Aflatoxin M1 in Milk-based Mithae samples from Pakistan
  74. Kinetics of Iron Removal From Ti-Extraction Blast Furnace Slag by Chlorination Calcination
  75. Increasing the activity of DNAzyme based on the telomeric sequence: 2’-OMe-RNA and LNA modifications
  76. Exploring the optoelectronic properties of a chromene-appended pyrimidone derivative for photovoltaic applications
  77. Effect of He Qi San on DNA Methylation in Type 2 Diabetes Mellitus Patients with Phlegm-blood Stasis Syndrome
  78. Cyclodextrin potentiometric sensors based on selective recognition sites for procainamide: Comparative and theoretical study
  79. Greener synthesis of dimethyl carbonate from carbon dioxide and methanol using a tunable ionic liquid catalyst
  80. Nonisothermal Cold Crystallization Kinetics of Poly(lactic acid)/Bacterial Poly(hydroxyoctanoate) (PHO)/Talc
  81. Enhanced adsorption of sulfonamide antibiotics in water by modified biochar derived from bagasse
  82. Study on the Mechanism of Shugan Xiaozhi Fang on Cells with Non-alcoholic Fatty Liver Disease
  83. Comparative Effects of Salt and Alkali Stress on Antioxidant System in Cotton (Gossypium Hirsutum L.) Leaves
  84. Optimization of chromatographic systems for analysis of selected psychotropic drugs and their metabolites in serum and saliva by HPLC in order to monitor therapeutic drugs
  85. Electrocatalytic Properties of Ni-Doped BaFe12O19 for Oxygen Evolution in Alkaline Solution
  86. Study on the removal of high contents of ammonium from piggery wastewater by clinoptilolite and the corresponding mechanisms
  87. Phytochemistry and toxicological assessment of Bryonia dioica roots used in north-African alternative medicine
  88. The essential oil composition of selected Hemerocallis cultivars and their biological activity
  89. Mechanical Properties of Carbon Fiber Reinforced Nanocrystalline Nickel Composite Electroforming Deposit
  90. Anti-c-myc efficacy block EGFL7 induced prolactinoma tumorigenesis
  91. Topical Issue on Applications of Mathematics in Chemistry
  92. Zagreb Connection Number Index of Nanotubes and Regular Hexagonal Lattice
  93. The Sanskruti index of trees and unicyclic graphs
  94. Valency-based molecular descriptors of Bakelite network BNmn
  95. Computing Topological Indices for Para-Line Graphs of Anthracene
  96. Zagreb Polynomials and redefined Zagreb indices of Dendrimers and Polyomino Chains
  97. Topological Descriptor of 2-Dimensional Silicon Carbons and Their Applications
  98. Topological invariants for the line graphs of some classes of graphs
  99. Words for maximal Subgroups of Fi24‘
  100. Generators of Maximal Subgroups of Harada-Norton and some Linear Groups
  101. Special Issue on POKOCHA 2018
  102. Influence of Production Parameters on the Content of Polyphenolic Compounds in Extruded Porridge Enriched with Chokeberry Fruit (Aronia melanocarpa (Michx.) Elliott)
  103. Effects of Supercritical Carbon Dioxide Extraction (SC-CO2) on the content of tiliroside in the extracts from Tilia L. flowers
  104. Impact of xanthan gum addition on phenolic acids composition and selected properties of new gluten-free maize-field bean pasta
  105. Impact of storage temperature and time on Moldavian dragonhead oil – spectroscopic and chemometric analysis
  106. The effect of selected substances on the stability of standard solutions in voltammetric analysis of ascorbic acid in fruit juices
  107. Determination of the content of Pb, Cd, Cu, Zn in dairy products from various regions of Poland
  108. Special Issue on IC3PE 2018 Conference
  109. The Photocatalytic Activity of Zns-TiO2 on a Carbon Fiber Prepared by Chemical Bath Deposition
  110. N-octyl chitosan derivatives as amphiphilic carrier agents for herbicide formulations
  111. Kinetics and Mechanistic Study of Hydrolysis of Adenosine Monophosphate Disodium Salt (AMPNa2) in Acidic and Alkaline Media
  112. Antimalarial Activity of Andrographis Paniculata Ness‘s N-hexane Extract and Its Major Compounds
  113. Special Issue on ABB2018 Conference
  114. Special Issue on ICCESEN 2017
  115. Theoretical Diagnostics of Second and Third-order Hyperpolarizabilities of Several Acid Derivatives
  116. Determination of Gamma Rays Efficiency Against Rhizoctonia solani in Potatoes
  117. Studies On Compatibilization Of Recycled Polyethylene/Thermoplastic Starch Blends By Using Different Compatibilizer
  118. Liquid−Liquid Extraction of Linalool from Methyl Eugenol with 1-Ethyl-3-methylimidazolium Hydrogen Sulfate [EMIM][HSO4] Ionic Liquid
  119. Synthesis of Graphene Oxide Through Ultrasonic Assisted Electrochemical Exfoliation
  120. Special Issue on ISCMP 2018
  121. Synthesis and antiproliferative evaluation of some 1,4-naphthoquinone derivatives against human cervical cancer cells
  122. The influence of the grafted aryl groups on the solvation properties of the graphyne and graphdiyne - a MD study
  123. Electrochemical modification of platinum and glassy carbon surfaces with pyridine layers and their use as complexing agents for copper (II) ions
  124. Effect of Electrospinning Process on Total Antioxidant Activity of Electrospun Nanofibers Containing Grape Seed Extract
  125. Effect Of Thermal Treatment Of Trepel At Temperature Range 800-1200˚C
  126. Topical Issue on Agriculture
  127. The effect of Cladophora glomerata exudates on the amino acid composition of Cladophora fracta and Rhizoclonium sp.
  128. Influence of the Static Magnetic Field and Algal Extract on the Germination of Soybean Seeds
  129. The use of UV-induced fluorescence for the assessment of homogeneity of granular mixtures
  130. The use of microorganisms as bio-fertilizers in the cultivation of white lupine
  131. Lyophilized apples on flax oil and ethyl esters of flax oil - stability and antioxidant evaluation
  132. Production of phosphorus biofertilizer based on the renewable materials in large laboratory scale
  133. Human health risk assessment of potential toxic elements in paddy soil and rice (Oryza sativa) from Ugbawka fields, Enugu, Nigeria
  134. Recovery of phosphates(V) from wastewaters of different chemical composition
  135. Special Issue on the 4th Green Chemistry 2018
  136. Dead zone for hydrogenation of propylene reaction carried out on commercial catalyst pellets
  137. Improved thermally stable oligoetherols from 6-aminouracil, ethylene carbonate and boric acid
  138. The role of a chemical loop in removal of hazardous contaminants from coke oven wastewater during its treatment
  139. Combating paraben pollution in surface waters with a variety of photocatalyzed systems: Looking for the most efficient technology
  140. Special Issue on Chemistry Today for Tomorrow 2019
  141. Applying Discriminant and Cluster Analyses to Separate Allergenic from Non-allergenic Proteins
  142. Chemometric Expertise Of Clinical Monitoring Data Of Prolactinoma Patients
  143. Chemomertic Risk Assessment of Soil Pollution
  144. New composite sorbent for speciation analysis of soluble chromium in textiles
  145. Photocatalytic activity of NiFe2O4 and Zn0.5Ni0.5Fe2O4 modified by Eu(III) and Tb(III) for decomposition of Malachite Green
  146. Photophysical and antibacterial activity of light-activated quaternary eosin Y
  147. Spectral properties and biological activity of La(III) and Nd(III) Monensinates
  148. Special Issue on Monitoring, Risk Assessment and Sustainable Management for the Exposure to Environmental Toxins
  149. Soil organic carbon mineralization in relation to microbial dynamics in subtropical red soils dominated by differently sized aggregates
  150. A potential reusable fluorescent aptasensor based on magnetic nanoparticles for ochratoxin A analysis
  151. Special Issue on 13th JCC 2018
  152. Fluorescence study of 5-nitroisatin Schiff base immobilized on SBA-15 for sensing Fe3+
  153. Thermal and Morphology Properties of Cellulose Nanofiber from TEMPO-oxidized Lower part of Empty Fruit Bunches (LEFB)
  154. Encapsulation of Vitamin C in Sesame Liposomes: Computational and Experimental Studies
  155. A comparative study of the utilization of synthetic foaming agent and aluminum powder as pore-forming agents in lightweight geopolymer synthesis
  156. Synthesis of high surface area mesoporous silica SBA-15 by adjusting hydrothermal treatment time and the amount of polyvinyl alcohol
  157. Review of large-pore mesostructured cellular foam (MCF) silica and its applications
  158. Ion Exchange of Benzoate in Ni-Al-Benzoate Layered Double Hydroxide by Amoxicillin
  159. Synthesis And Characterization Of CoMo/Mordenite Catalyst For Hydrotreatment Of Lignin Compound Models
  160. Production of Biodiesel from Nyamplung (Calophyllum inophyllum L.) using Microwave with CaO Catalyst from Eggshell Waste: Optimization of Transesterification Process Parameters
  161. The Study of the Optical Properties of C60 Fullerene in Different Organic Solvents
  162. Composite Material Consisting of HKUST-1 and Indonesian Activated Natural Zeolite and its Application in CO2 Capture
  163. Topical Issue on Environmental Chemistry
  164. Ionic liquids modified cobalt/ZSM-5 as a highly efficient catalyst for enhancing the selectivity towards KA oil in the aerobic oxidation of cyclohexane
  165. Application of Thermal Resistant Gemini Surfactants in Highly Thixotropic Water-in-oil Drilling Fluid System
  166. Screening Study on Rheological Behavior and Phase Transition Point of Polymer-containing Fluids produced under the Oil Freezing Point Temperature
  167. The Chemical Softening Effect and Mechanism of Low Rank Coal Soaked in Alkaline Solution
  168. The Influence Of NO/O2 On The NOx Storage Properties Over A Pt-Ba-Ce/γ-Al2O3 Catalyst
  169. Special Issue on the International conference CosCI 2018
  170. Design of SiO2/TiO2 that Synergistically Increases The Hydrophobicity of Methyltrimethoxysilane Coated Glass
  171. Antidiabetes and Antioxidant agents from Clausena excavata root as medicinal plant of Myanmar
  172. Development of a Gold Immunochromatographic Assay Method Using Candida Biofilm Antigen as a Bioreceptor for Candidiasis in Rats
  173. Special Issue on Applied Biochemistry and Biotechnology 2019
  174. Adsorption of copper ions on Magnolia officinalis residues after solid-phase fermentation with Phanerochaete chrysosporium
  175. Erratum
  176. Erratum to: Sand Dune Characterization For Preparing Metallurgical Grade Silicon
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 8.9.2025 from https://www.degruyterbrill.com/document/doi/10.1515/chem-2019-0007/html
Scroll to top button