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Author(s): 

Issue Info: 
  • Year: 

    2022
  • Volume: 

    -
  • Issue: 

    -
  • Pages: 

    84-114
Measures: 
  • Citations: 

    1
  • Views: 

    4
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Writer: 

TAHERPOUR AVAT (ARMAN)

Issue Info: 
  • Year: 

    2015
  • Volume: 

    23
Measures: 
  • Views: 

    184
  • Downloads: 

    76
Keywords: 
Abstract: 

ALTHOUGH, THE THEORY AND MATHEMATICS OF COMPUTATIONAL CHEMISTRY COULD BE VERY SPECIALIZED AND TEDIOUS, BUT DUE TO THE ENDLESS APPLICATIONS OF THIS NEWLY ESTABLISHED FIELD, IT GAINS A HIGH REPUTATION RAPIDLY AMONG ALL CHEMISTS AROUND THE WORLD,...

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Writer: 

YAVARI ISSA

Issue Info: 
  • Year: 

    2013
  • Volume: 

    20
Measures: 
  • Views: 

    186
  • Downloads: 

    79
Keywords: 
Abstract: 

IN CHEMISTRY, THEORY IS A MATHEMATICAL OR LOGICAL EXPLANATION, OR A MODEL CONNECTING LABORATORY OBSERVATIONS TO THE BEHAVIOR OF THE UNDERLYING ATOMS, MOLECULES, OR MATERIALS. IT MUST BE CAPABLE OF PREDICTING FUTURE OBSERVATIONS, AND CAPABLE OF BEING TESTED THROUGH EXPERIMENT...

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Writer: 

SALEHZADEH SADEGH

Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
Measures: 
  • Views: 

    126
  • Downloads: 

    62
Keywords: 
Abstract: 

COMPUTATIONAL CHEMISTRY USES MATHEMATICAL APPROXIMATIONS AND COMPUTER PROGRAMS TO OBTAIN RESULTS RELATIVE TO CHEMICAL PROBLEMS. COMPUTATIONAL QUANTUM CHEMISTRY FOCUSES SPECIFICALLY ON EQUATIONS AND APPROXIMATIONS DERIVED FROM THE POSTULATES OF QUANTUM MECHANICS. THE KNOWN METHODS OF QUANTUM MECHANICS ARE INCLUDING MOLECULAR ORBITAL METHODS (MO) (ALSO KNOWN AS AB INITIO AND FIRST PRINCIPLES), DENSITY FUNCTIONAL THEORY (DFT), HYBRID DFT/MO METHODS AND SEMI-EMPIRICAL METHODS. IN RECENT YEARS WE HAVE BEEN INTERESTED IN STUDYING THE FOLLOWING SUBJECTS USING THE QUANTUM MECHANICAL METHODS:■ PROTON AFFINITY OF POLYBASIC LIGANDS AND CORRESPONDING METAL COMPLEXES [1]■ PROTONATION CONSTANTS AND/OR MICRO CONSTANTS OF POLYBASIC LIGANDS [2]■ RELATIVE STABILITIES OF DIFFERENT CONFORMERS OF LIGANDS AND DIFFERENT ISOMERIC FORMS OF METAL COMPLEXES AND DESIGNING COMPOUNDS WITH SPECIAL PROPERTIES OR STRUCTURES [3]■ BINDING ENERGIES AND THE NATURE OF METAL-LIGAND BONDS IN METAL COMPLEXES [4]■ INTERACTION BETWEEN THE NANO SIZE AND/OR NON-NANO SIZE MOLECULES [5]IN THIS LECTURE I WILL TALK ABOUT A NUMBER OF OUR RECENT PUBLISHED AND UNPUBLISHED RESEARCH WORKS ASSOCIATED TO ABOVE SUBJECTS.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2023
  • Volume: 

    5
  • Issue: 

    7
  • Pages: 

    661-674
Measures: 
  • Citations: 

    0
  • Views: 

    28
  • Downloads: 

    2
Abstract: 

In this paper, the ability of organic reagents such as the succinate, oxalate, maleate, fumarate, adipate, glutarate, suberate, and pimelate anions in separation of different enantiomer form of tiletamine compound (R&S) is investigated using the density functional theory method (DFT). Our findings showed that the conglomerate crystal of tiletamine is formed in the presence of succinate, oxalate, fumarate, and maleate organic reagents. Moreover, the racemic mixture of tiletamine is formed in the presence of adipate, glutarate, suberate, and pimelate anions. According to the thermodynamic parameters of tiletamine-organic anion interactions, it is revealed that, in comparison to chloroform, internal thermal energy, enthalpy, and Gibbs free energy become more positive in the presence of ethanol and water solvents indicating the enfeeble effect of solvent polarity on enantiomer separation. Also, it should be noted that the existence of carbon chain lengths greater than three atoms in the organic anion is not suitable for enantiomeric separation. The natural bond orbital (NBO) and Atom In Molecules (AIM) results show that tiletamine nitrogen atom is the primary site of interaction with the oxalate, succinate, fumarate, and maleate anions.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

MAHDAVIAN L.

Issue Info: 
  • Year: 

    2016
  • Volume: 

    2
  • Issue: 

    2
  • Pages: 

    102-112
Measures: 
  • Citations: 

    0
  • Views: 

    225
  • Downloads: 

    142
Abstract: 

Polycyclic aromatic hydrocarbons (such as, anthracene, benzo [a] pyrene and so on) are non-polar, hydrophobic compounds, which are not ionized. They are only slightly soluble in water. They are very dangerous compounds in the environment. The single-walled carbon nanotube (SWNT) is used for removal and conversion of anthracene to low-risk products. In this study, electron transfer between anthracene and SWNT (8, 8) is evaluated through density functional approach at the level of B3LYP/6-31G. The calculation of the electronic properties shows that SWNT is very sensitive to the presence of anthracene molecule. The HOMO/LUMO and gap energy (Eg) changes were considerable. According to the calculated thermodynamic parameters through the DFT method, it is expected that SWNT be a candidate in the elimination of anthracene as well as a gas sensor for its detection and conversion. Regarding the thermodynamic results, the absorption of pollutant on nano-surface of SWNT is exothermic and spontaneous. The results show that the pollutant can be reduced or eliminated from the environment by single-walled carbon nanotubes.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2015
  • Volume: 

    18
Measures: 
  • Views: 

    198
  • Downloads: 

    114
Abstract: 

BACKGROUND: HENRY’S LAW CONSTANT, H, DESCRIBES AN ABILITY OF A CHEMICAL MOLECULE TO DISTRIBUTE BETWEEN GASEOUS AND AQUEOUS PHASE, AND PLAYS A KEY ROLE IN PHYSICAL CHEMISTRY [1]. IN THIS WORK, CALCULATIONS OF THE H VALUES WERE PERFORMED FOR MONOSULFIDES AND DISULFIDES BY THE THEORETICAL LEVEL HF/6-31+G (D) USING QUANTUM POLARIZATION CONTINUUM SOLVATION (PCM) AND SEMI-CONDUCTIVE CONTINUUM POLARIZATION (CPCM) WITH TAKING INTO ACCOUNT THE DIFFERENT CAVITY MODELS. …

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
Measures: 
  • Views: 

    116
  • Downloads: 

    74
Keywords: 
Abstract: 

5-PHENYL-1, 3, 4-OXADIAZOLE-2-THIONE USING THE SYNTHETIC PROCEDURE BASED ON THE RING CLOSURE REACTIONS OF APPROPRIATE ACID HYDRAZIDES WITH CARBON DISULPHIDE [1]. THE STRUCTURES OF THE SYNTHESIZED COMPOUNDS WERE CONFIRMED BY ELEMENTAL ANALYSES, IR SPECTRA. THE MOLECULAR GEOMETRY AND VIBRATIONAL FREQUENCIES AND ENERGIES IN THE GROUND STATE ARE CALCULATED BY USING THE DFT/B3PW91 AND DFT/B3LYP METHODS WITH 6-31G AND STO-3G BASIS SETS [2]. THE GEOMETRIES AND NORMAL MODES OF VIBRATIONS OBTAINED FROM FUNCTIONAL METHODS B3LYP ANDB3PW91 AT 6-31G ANDSTO-3GBASIS SETS CALCULATIONS ARE IN GOOD AGREEMENT WITH THE EXPERIMENTALLY OBSERVED DATA [3].

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 116

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    20
Measures: 
  • Views: 

    117
  • Downloads: 

    55
Keywords: 
Abstract: 

5-PHENYL-1, 3, 4-OXADIAZOLE-2-THIONE USING THE SYNTHETIC PROCEDURE BASED ON THE RING CLOSURE REACTIONS OF APPROPRIATE ACID HYDRAZIDES WITH CARBON DISULPHIDE. THE STRUCTURES OF THE SYNTHESIZED COMPOUNDS WERE CONFIRMED BY ELEMENTAL ANALYSES, IR SPECTRA. THE MOLECULAR GEOMETRY AND VIBRATIONAL....

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 117

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Issue Info: 
  • Year: 

    2025
  • Volume: 

    44
  • Issue: 

    9
  • Pages: 

    2308-2323
Measures: 
  • Citations: 

    0
  • Views: 

    19
  • Downloads: 

    0
Abstract: 

Ovarian cancer remains a leading cause of gynecological cancer mortality due to late diagnosis and limited therapeutic options. Fructus Ligustri Lucidi (FLL), a traditional Chinese medicinal herb, exhibits multiple pharmacological activities, but its anti-ovarian cancer potential remains underexplored. A network pharmacology approach integrating TCMSP, SuperTCM, GeneCards, and STRING databases identified potential FLL bioactives and their ovarian cancer-related targets. Cytoscape and CytoHubba revealed key hub genes. GO and KEGG enrichment analyses were performed to elucidate biological pathways. Molecular docking assessed binding affinities of phytoconstituents with HSP90AA1, SRC, and STAT3. TIMER and GEPIA evaluated gene expression, immune infiltration, and survival relevance. Finally, in vitro analyses, including MTT, Annexin V/PI staining, and Western blotting, validated FLL’s cytotoxic and molecular effects on SKOV3 ovarian cancer cells. Results: Seven active FLL compounds were identified, targeting 162 intersecting genes, including HSP90AA1, SRC, and STAT3. KEGG enrichment highlighted the PI3K-Akt and MAPK signaling pathways. Molecular docking revealed high binding affinities of phytochemicals with hub targets. TIMER analysis indicated that SRC and STAT3 expression correlate with reduced immune infiltration. GEPIA showed upregulation of SRC and STAT3 in tumors and stage-specific expression, though not prognostic. In vitro, FLL reduced SKOV3 viability and induced both early and late apoptosis. Western blotting showed dose-dependent suppression of HSP90AA1 (88% to 12%), SRC (80% to 43%), and STAT3 (66% to 43%) expression. FLL exhibits multi-targeted anti-ovarian cancer effects through modulation of key oncogenic pathways and genes. These findings support its potential as a natural therapeutic agent for ovarian cancer management.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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