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Topological Descriptor of 2-Dimensional Silicon Carbons and Their Applications

  • Muhammad Nadeem , Sarfraz Ahmad EMAIL logo , Muhammad Kamran Siddiqui and Muhammad Naeem
Published/Copyright: December 31, 2019

Abstract

The Chemical graph theory is extensively used in finding the atomic supplementary properties of different chemical stuructures. Many results of graph theory are commonly used in molecular structures and in general in Chemisty. In a molcular graph vertices are atoms while chemical bonds are given by edges. This article is about computing the exact values for some degree based toplogical descriptors of two molecular structures. Namely we work on the silicon-carbon Si2C3- III and SiC3-III for dimension two. We also discuss some applications of these results towards Chemistry.

1 Introduction

A combination of graph theory and Chemistry is an interesting branch of Mathematics called chemical graph theory. The molecules from Chemistry model in Mathematical ways in the form of molecular graph. A graph is a union of two sets namely vertices and edges. In a molecular graph vertices are atoms while chemical bonds are given by edges. Different techniques from graph theory use to apply on these molecular structures to get their different topological and structure properties. For example, the boiling point of chemical compound,

which is a physical entity, can be estimated using degree and distance between the vertices of the chemical compound. Thus, we can say while modelling a chemical problem in terms of mathematical form, topology of its molecular structure plays an important role to give useful properties of corresponding chemical compound [1]. In 1988, it was accounted for that few hundred specialists worked in delivering around 500 research articles every year exploring various properties of chemical structures including two-volume of meticulous contents by Gutman in [2]. More applications of this interested branch of science particularly discussing topological indices are available in [3, 4, 5, 6, 7, 8, 9].

One of the promptly research directions among the researchers is the study of chemical compounds in term of mathematical modelling [4, 5]. A broad proportion of chemical compounds exists which have interesting mathematical structures and have wide range of applications in industrial, pharmaceutical, research and commercial chemistry. Arrangements of atoms among a chemical compound have definite structural rules which have useful hidden properties. Thus, to explore these properties by use of mathematical tools, in terms of combinatorics and topology, play a significant rule in applied research. It is worth mentioning here that the mathematical chemistry obtains considerable contributions from the field of chemical graph theory [6, 7]. There are many invariants of chemical graph theory namely, indices or descriptors, which are used in other sciences notably in pharmaceutical and chemical way [8, 9]. More precisely the study of distance based and degree-based indices takes active part in the development of related fields [10]. It helps to gather huge data in the form of numerical values associated to chemical structures and get their comparisons using modern computer systems [11]. During the last decade of nineteenth century many topological descriptors have been introduced to fulfil the requirements of the chemists [12,13].

A graph G=(V,E) can be represented as combination of two sets namely edge set E and vertex set V. Edges are denoted by lines in a graph G. Number of edges shared by a vertex p called its degree μ(p) while distance between two vertices p and q is the minimum of the cardinality of the sets of all edges between them and is denote by d(p,q). One can represent a graph by many ways including a value namely by different topological descriptors which could be distance based or degree based.

The Zagreb indices are defined as follows by Gutman and Trinajstić [14, 15]:

(1)M1(G)=pqE(G)(μ(p)+μ(q))
(2)M2(G)=pqE(G)(μ(p)×μ(q))

The Zagreb coindices are defined as follows by Dos̆lic‘ [16]:

(3)M1¯=M1¯(G)=pqE¯(G)[μ(p)+μ(q)]
(4)M2¯=M2¯(G)=pqE¯(G)μ(p)μ(q)

Following theorem is proved by Gutman et al. [17]:

“Theorem 1

Let G be a graph with |V(G)| vertices, |E(G)| edges andM1¯(G)represents the first Zagreb coindex, then

(5)M1¯(G)=2|E(G)|(|V(G)|1)M1(G)

Theorem 2

Let G be graph with |V(G)| vertices, |E(G)| edges andM2¯(G)represents the second Zagreb coindex, then

(6)M2¯(G)=2|E(G)|212M1(G)M2(G)

The multiple Zagreb indices are defined as follows by Ghorbani and Azimi [18]:

(7)PM1G=pqEGμp+μq
(8)PM2(G)=pqE(G)[μ(p)×μ(q)]

We recommend the reader to study [19, 20, 21, 22] for more details.

Firstly this article deals with the computation of above mentioned indices for the molecular structres Si2C3-III[n,m] and SiC3-III[n,m]. Secondly we present comparisons of the results in the form of tables and functional graphs.

2 Methods

To process our outcomes, we utilize the strategy for combinatorial registering, vertex segment technique, edge segment strategy, graph hypothetical instruments, investigative strategies, degree tallying strategy and whole of degrees of neighbor’s technique. Likewise, we used computer algebra systems like Matlab and Maple for estimation and numerical sketching, respectively.

3 Two dimenstional Silicon Carbide Si2C3-III[n,m]

The silicones are semiconductor in nature that utilizes in assembling of some different materials. It is organism used nearly in all the most recent electronic based gadgets. A be notable among these discovered structures are the 2 dimensional silicon carbon having single layer blends having particular stoichiometric which were wrapped [23]. It’s based particle the molecule swarm streamlining given to be (PSO) system combined with deep practical postulate enhancement.

Some sheets of the graphene were effectively disconnected in 2004 [24]. This two-dimensional structure come out to be used in the additional conventional particularly in their mechanical and optical possessions. Moreover, these gadgets possess distinguish electric properties of graphene draw which attracts the researcher to work on this two dimensional structure.

Till this date study of these silicon sheets is quite open although a lot of work has already been done. There is another form of these structures namely two dimensional (Si-C) single layers which can be seen as distinctive objects among the pure 2 dimensional single-layer carbon -graphene and the pure 2 dimensional solitary layer-silicone. Many attempts are accompanied for forestalling the silicon carbon (Si-C) sheet [25]. Figure 1 give the structure for the above-mentioned sheets.

Figure 1 Two dimensional constitution of Si2C3-III[n,m](a) One dimensional cell of Si2C3-III[n,m],(b) Si2C3-III[5,4]. Brown vertices as Carbon atom C and blue vertices as Silicon atom Si.
Figure 1

Two dimensional constitution of Si2C3-III[n,m]

(a) One dimensional cell of Si2C3-III[n,m],

(b) Si2C3-III[5,4]. Brown vertices as Carbon atom C and blue vertices as Silicon atom Si.

To have idea about the corresponding molecular graph, we characterize associated values of the one dimensional cells in succession (chain). It is easily seen in Figure 2 that in what way the cells associate in bolt (chain) and how one line interfaces with another line. As a first part we work on the molecular structure given by Si2C3- III[n,m].

Figure 2 2 dimensional Si2C3-III[n,m],(a) Si2C3-I[5,1] (b) Si2C3-III[5,2].
Figure 2

2 dimensional Si2C3-III[n,m],(a) Si2C3-I[5,1] (b) Si2C3-III[5,2].

3.1 Results

For this structure the cardinality of vertex set is 10 mn. Also, the cardinality of the edge set is 15mn-2n-3. We make partitions of vertex set and edge set to compute the topological descriptors for this chemical structure. Let n, m≥1. The vertex is partitioned into three sets depending upon degrees of the vertices. Namely we denote by Vi the set containing vertices of degree i. For Si2C3-III[n,m], we have |V1|=2, |V2|=4n+3m-1 and |V3|=10mn-4n-3m-1. The partitions of edges are shown in the following Table.

3.1.1 Zagreb indices

By [35], we have:

M1(Si2C3III[n,m])=420n+30m(3n1).M2(Si2C3III[n,m])=1442n+135mn61m.

3.1.2 The first and second Zagreb coindices

Equations (3), (4) and Theorem 1,2 we get our results as:

M1¯(G)=pqE¯(G)(μ(p)+μ(q))M1¯(G)=2|E(G)|(|V(G)|1)M1(G)=2(3m2n+15mn)(10mn1)(20n30m+90mn+4)=300m2n2+36m+24n120mn460m2n40mn2.
M2¯G=pqE¯GμpμqM2¯G=2EG212M1GM2GM2¯G=23m2n+15mn21220n30m+4+90mn42n+14+135mn61m=450m2n2+8n2156mn+76m+18m2180m2n120mn2+52n16.
Table 1

Edge partition.

(μ(p),μ(q))CardinalitiesEdge Sets
(1,3)2E1
(2,2)2m+2E2
(2,3)8n+8m-12E3
(3,3)15mn-13m-10n+8E4

3.1.3 Multiple Zagreb indices

Now equations (7), (8) are used to compute following indices as:

PM1G=pqEGμp+μq=2+22+2m×3+12×2+38m+8n12×3+315mn13m10n+8=42m+2×42×58m+8n12×615mn13m10n+8.
PM2(G)=pqE(G)[μ(p)×μ(q)]=(2×2)(2+2m)×(1×3)(2)×(3×2)(8m+8n12)×(3×3)(15mn13m10n+8)=(3)(2)×(4)(2+2m)×(6)(8m+8n12)×(9)(15mn13m10n+8).

4 2D Silicon Carbide SiC3-III[n,m]

The two dimensional Silicon Carbide SiC3-III, the molecular graph, is draft in Figure 6. The one dimensional cells are shown in the straight line in the form of chain. The rows are given by n and columns are given by m. Figure 7 describes the structure exhibited in what way the cells interface straight (chain) and how one line associates with another column.

Figure 3 (a) 1st Zagreb index, (b) 2nd Zagreb index.
Figure 3

(a) 1st Zagreb index, (b) 2nd Zagreb index.

Figure 4 (a) 1st Zagreb coindex, (b) 2nd Zagreb coindex.
Figure 4

(a) 1st Zagreb coindex, (b) 2nd Zagreb coindex.

Figure 5 (a) First Multiple Zagreb index (b) Second Multiple Zagreb index.
Figure 5

(a) First Multiple Zagreb index (b) Second Multiple Zagreb index.

Figure 6 2 dimensional structure of SiC3-III[n,m], (a) One dimensional cell, (b) SiC3-III[5,5]. Carbon atoms(brown), Silicon atoms(blue).
Figure 6

2 dimensional structure of SiC3-III[n,m], (a) One dimensional cell, (b) SiC3-III[5,5]. Carbon atoms(brown), Silicon atoms(blue).

Figure 7 2 dimensional structure of SiC3-III[n,m], (a) SiC3-III[5,1], (b) SiC3-III[5,2].
Figure 7

2 dimensional structure of SiC3-III[n,m], (a) SiC3-III[5,1], (b) SiC3-III[5,2].

Figure 8 (a) 1st Zagreb index (b) 2nd Zagreb index.
Figure 8

(a) 1st Zagreb index (b) 2nd Zagreb index.

4.1 Results

For this structure the cardinality of vertex set is 8 mn. Also, the cardinality of the edge set is 12mn-3n-2m. We make partitions of vertex set and edge set to compute the topological descriptors for this chemical structure. Let n, m≥1. The vertex is partitioned into three sets depending upon degrees of the vertices. Namely we denote by Vi the set containing vertices of degree i. For Si2C3-III[n,m], we have |V1|=3, |V2|=6n+4m-6 and |V3|=8mn-6n-4m-1. The partition of edges is shown in the following Table.

4.1.1 Zagreb indices

By [35], we have:

M1(G)=6+4m(18n5)30n.M2(G)=19+4m(27n10)60n.
Table 2

Edge partitions.

(μ(p),μ(q))CardinalitiesEdge Sets
(1,2)2E1
(1,3)1E2
(2,2)3n+2m-3E3
(2,3)6n+4m-8E4
(3,3)12mn-12n-8m+8E5

4.1.2 Zagreb Coincides

Equations (3), (4) and Theorem 1, 2 leads us to compute the following results as below:

M1G=pqE¯Gμp+μqM1¯G=2EG(|VG1)M`1G=212mn2m3n8mn120m+72mn+630n=192m2n248mn232m2n+24m6+36n96mn.M2¯G=pqE¯GμrμsM2¯G=2EG212M1GM2GM2¯G=212mn2m3n2126+72mn20m30n108mn+1960n40m=288m2n2+8m2+18n2+50m120mn96m2n144mn2+75n22.

4.1.3 Multiple Zagreb indices

By (7) and (8), we have:

PM1(G)=pqE(G)[μ(p)+μ(q)]=(2+2)(2m+3n3)×(1+2)(2)×(1+3)(1)×(2+3)(4m+6n8)×(3+)(8+12mn8m12n)=(5)(6n+4m8)×36×(4)(3n+2m3)×(6)(12mn8m12n+8).PM2(G)=pqE(G)[μ(p)×μ(q)]=(2×2)(3n+2m3)×(1×2)(2)×(1×3)(1)×(3×3)(12mn12n8m+8)×(2×3)(6n+4m8)=(4)(2m+3n3)×(6)(4m+6n8)×(9)(12mn8m12n+8)×12.

5 Results Comparisons and Discussion

A brief comparison of the indices has shown growth in the values of the calculated topological descriptors. This is clear from the Table 3 and Table 4 that values of these descriptors for Si2C3-III[n,m] are in increasing order as values of n and m are increasing. The corresponding behaviour of the graphs of these indices are shown in Figures 3-5 for some estimated values of n and m.

Table 3

A comparison of Zagreb indices and coincides for Si2C3-III[n,m].

[m,n]M1 (G)M2 (G)M1(G)¯
[1,1]14414611412
[2,2]1264134815076
[3,3]16641920110268
[4,4]1124411762110788
Table 4

A comparison of Zagreb coincides and multiple indices Si2C3-III[n,m].

[m,n]M2(G)¯PM1 (G)PM2 (G)
[1,1]20943.2×1044.5×104
[2,2]70444.3×1059.7×105
[3,3]106985.4×10610.3×106
[4,4]207568.3×10914.4×1011

Now we give a comparison of different Zagreb indices computed for SiC3-III[n,m]. It is clear from the Table 5 and Table 6 that the numerical values of these indices are in increasing order as values of n and m are increasing. The corresponding behaviour of the graphs of these indices are shown in Figures 8-10 for some estimated values of n and m.

Table 5

A comparison of Zagreb indices and coincides for SiC3-III[n,m].

[m,n]M1 (G)M2 (G)M1(G)¯
[1,1]28271412
[2,2]1942516212
[3,3]5046918258
[4,4]95813479758
Table 6

A comparison of Zagreb coincides and multiple indices for SiC3-III[n,m].

[m,n]M2(G)¯PM1 (G)PM2 (G)
[1,1]30942.4×1054.7×106
[2,2]70544.6×1075.3×108
[3,3]78785.7×10116.4×1011
[4,4]87669.5×10139.7×1014

The topological descriptors computed in this article are used to compute the energy of electron particles π [15]. Thus, above mentioned comparison shown that the energy of electron particles increases as we increase the value of m and n for both types of Silicon sheets.

Figure 9 (a) 1st Zagreb coindex (b) 2nd Zagreb coindex.
Figure 9

(a) 1st Zagreb coindex (b) 2nd Zagreb coindex.

Figure 10 (a) 1st Multiple Zagreb index (b) 2nd Multiple Zagreb index
Figure 10

(a) 1st Multiple Zagreb index (b) 2nd Multiple Zagreb index

6 Conclusions

6.1 Applications of Zagreb Indices

The Zagreb coindex demonstrations a virtuous correlation of the materialization in heat of heptane’s and octane.

Thus, our calculation done for the Zagreb coindices has shown an imperative statute for the materialization heat absorbed by heptanes and octane as there standards are in growing behaviour [26, 27].

The multiple Zagreb indices are valuable for investigations of the ingredient and pharmacological possessions of medication in nuclear configurations. Therefore, on account of Si2C3-III[n,m], and SiC3-III[n,m], its expanding esteems are valuable in the fast activity during synthetic reaction for drugs [28].

In [29], the authors utilized these topological descriptors to demonstrate the mitigating movement of different acids particularly in N-arylanthranilic. In [30], the authors established the fact that these descriptors are important in demonstrating the division guaranteed and leeway of cephalosporin’s inhumanness [31].

6.2 Applications of Silicone carbides

In Physical perspective, unadulterated silicon carbide is gotten as dry gems, along with thickness of around 3 g/mL and a peak dissolving purpose of 2730C0. Moreover, generally this is found as a somewhat blue dark, radiant crystalline strong, because of modest quantities of iron or different polluting influences from the modern generation. In synthetic perspective, silicon carbide is an entirely steady furthermore, synthetically inactive multifaceted. This is indeed incredibly tough material, usually having 9 hardness rating, which is near to the precious stone.

This is additionally portrayed by there extraordinary warm conductivity, peak temperature equality, below warm extension, protection from substance response, and capacity to work as a semiconductor. For more details, see books [32,33].

In addition, silicon carbide is broadly utilized as a rough. It is utilized to make different materials, for example, polishes, granulating wheels, spiteful apparatuses, hard earthenware production, vehicle parts, recalcitrant linings, high temperature blocks, warming components, wear-safe parts for siphons and even gems. It is additionally a significant material in the hardware business and utilized for making light LEDs and semiconductor electronic devices. Moreover, Silicon carbides residue and filaments delivered during the handling found to be primary dangers of this quantifiable. The silicon carbides residue may also bother eyes, coating, and superior respiratory framework and lead to lung cancer and fibrosis. For more details, see book [34].

6.3 Concluding Remarks

This article is about the computation of different topological descriptors of the chemical structures Si2C3- III[n,m], and SiC3-III[n,m]. We have computed the exact values of Zagreb type indices. The results are very useful and helpful for both chemical and pharmaceutical point of view. It gives interesting comparisons in terms of tables and three dimensional graphs.



Acknowledgement

The authors are very grateful to the anonymous referees for their valuable comments and suggestions which improved the presentation of this article.

  1. Conflicts of Interest: the authors declare no conflict of interest.

  2. Funding: This research is partially supported by Higher Education Commission of Pakistan under NRPU project “Properties of Ranking Ideals” via Grant 20-3665/R&D/ HEC/14/699.

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Received: 2018-10-24
Accepted: 2019-02-21
Published Online: 2019-12-31

© 2019 Muhammad Nadeem et al., published by De Gruyter

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

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  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
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