Pakistan Journal of Chemistry最新文献_第7页

Antibacterial Activities of Newly Synthesized Azo Anils And its Oxalato-Bridged Binu-clear {Cu(II) and Zn(II)} Complexes 新合成的偶氮动物及其草草酸桥接Binu-clear {Cu(II)和Zn(II)}配合物的抗菌活性

Pakistan Journal of Chemistry Pub Date : 2014-12-30 DOI: 10.15228/2014.v04.i04.p05

M. Ameen, S. R. Gilani, A. Naseer, I. Shoukat, Syed Danish Ali

{"title":"Antibacterial Activities of Newly Synthesized Azo Anils And its Oxalato-Bridged Binu-clear {Cu(II) and Zn(II)} Complexes","authors":"M. Ameen, S. R. Gilani, A. Naseer, I. Shoukat, Syed Danish Ali","doi":"10.15228/2014.v04.i04.p05","DOIUrl":"https://doi.org/10.15228/2014.v04.i04.p05","url":null,"abstract":"Novel oxalato-bridged binuclear metal {Cu(II) and Zn(II)} complexes; [{(L1)M(II)}2OX] (L1= 2-({2-hydroxy-5-[(4nitrophenyl)diazenyl]benzylidene}amino)benzoic acid, OX = oxalate) and [{(L2)M(II)}2OX], (L2 = 2-{[(2hydroxyphenyl)imino]methyl}-4-[(4-nitrophenyl)diazenyl] phenol, OX = oxalate) were synthesized. Azo anils and corresponding Metal {Cu((II) and Zn(II)} complexes were characterised by Elemental Combustion System, Atomic Absorption Spectroscopy (AAS), Fourier Transform Infrared (FTIR) spectroscopy, UV-Visible, Spectroscopy and C-H-Nuclear Magnetic Resonance spectroscopy. Elemental Analyses, FTIR and UV-Vis were used for structural characterization of metal complexes and distorted octahedral geometry for M(II) complexes came into being. The antibacterial activities of azo anils ligands, oxalate ion, CuCl2.2H2O, Zn(CH3COO)2.2H2O and metal {Cu(II) and Zn(II)} complexes against gram-positive (Bacillis subtilis) and gramnegative (Escherichia coli) were evaluated. The antibacterial activities were performed to asses inhibition potential of ligand and their metal {Cu(II) and Zn(II)} complexes. The results revealed that antibacterial activities of azo anils become more pronounced when free ligands were coordinated to central metal atom.","PeriodicalId":19815,"journal":{"name":"Pakistan Journal of Chemistry","volume":"17 1","pages":"190-197"},"PeriodicalIF":0.0,"publicationDate":"2014-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78016051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Enhancement of Sudan Gasoline Octane Number by Natural and Synthetic Zeolites 天然和合成沸石对苏丹汽油辛烷值的提高

Pakistan Journal of Chemistry Pub Date : 2014-12-30 DOI: 10.15228/2014.V04.I04.P03

M. Hassan

{"title":"Enhancement of Sudan Gasoline Octane Number by Natural and Synthetic Zeolites","authors":"M. Hassan","doi":"10.15228/2014.V04.I04.P03","DOIUrl":"https://doi.org/10.15228/2014.V04.I04.P03","url":null,"abstract":"ABSTRACT The sample of natural zeolite is collected from the Sudan area, (scolecite) from Buda desert. And the other one is synthetic zeolite (Y). The study characterized the natural zeolite (scolecite) and synthetic (Y). Using thin sections for natural zeolite to recognize it. Beside different techniques as follow: Atomic absorption, xray diffraction (XRD), inferared spectroscopy (FTIR), acidity measured by pyridine FTIR, scanning electron microscopy (SEM). The study was carried out for selected natural zeolite (scolecite) and synthetic zeolite (Y) they are modification by two methods impregnation and ion exchange using ammonium chloride and platinum hydrochloride H2PtCl6 The Naphtha was obtained from the refinery of Khartoum Company (it has octane number40). Piona of naphtha was studied by GC. The natural and synthetic zeolites modification was applied on reforming process to increase the gasoline octane number. The study carried out fourteen experiments for each kind of zeolite with a variety of reactions conditions like liquid hour space velocity (LHSV), pressure and temperature, the optimal experiments with suitable conditions gave good results. Octane number increased in pressure rang 8-12 bar, liquid hour space velocity 2 and temperature 480500C. The synthetic zeolite (Y) raised the octane number from (40 to 93.5). The natural zeolite (scolecite) also showed good properties and increased the octane number from (40 to 87.9). It needs more purification and modification to reach the synthetic. The study explained that the two zeolites (natural, synthetic) are successful for application in reforming process.","PeriodicalId":19815,"journal":{"name":"Pakistan Journal of Chemistry","volume":"17 1","pages":"167-184"},"PeriodicalIF":0.0,"publicationDate":"2014-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83364911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetics and Adsorption Isotherms Studies of Acridine Orange Dye from Aqueous Solution by Activated Charcoal 活性炭吸附吖啶橙染料的动力学及等温线研究

Pakistan Journal of Chemistry Pub Date : 2014-12-30 DOI: 10.15228/2014.V04.I04.P06

N. Qamar, R. Azmat, R. Naz, B. Malik

引用次数: 0

Synthesis and Biological Screening of N-(Dimethylphenyl Substituted)-N-Ethyl/Benzyl-4-Chlorobenzenesulfonamide Derivatives N-(二甲基苯基取代)-N-乙基/苄基-4-氯苯磺酰胺衍生物的合成及生物学筛选

Pakistan Journal of Chemistry Pub Date : 2014-12-01 DOI: 10.15228/2014.V04.I04.P01

Aziz‐ur‐Rehman, I. Ahmad, M. Abbasi, S. Z. Siddiqui, K. Nafeesa, A. Sattar, Irshad Ahmed, S. Afzal

引用次数: 0

Hg (II ) Catalysed Oxidation of D - Arabinose and D - Mannose by Acidic Solution of Potassium Permanganate: Kinetics and Mechanism Hg (II)在酸性高锰酸钾溶液中催化氧化D -阿拉伯糖和D -甘露糖:动力学和机理

Pakistan Journal of Chemistry Pub Date : 2014-09-30 DOI: 10.15228/2014.V04.I03.P04

R. Naz, R. Azmat, N. Qamar, N. Siddiqi

引用次数: 2

Electronic Spectrum of different Bis-Schiff bases of Isatin and its Solvatochromism Isatin不同双希夫碱的电子谱及其溶剂变色性

Pakistan Journal of Chemistry Pub Date : 2014-09-30 DOI: 10.15228/2014.V04.I03.P05

M. A. Tanoli, Zahid Khan, Z. Maqsood, Tuba Kamal, K. Khan, T. Ahmed

引用次数: 2

Investigation of Moisture Sorption, Permeability and Drug Release Behavior of Carrageenan/Poly Vinyl Alcohol Films 卡拉胶/聚乙烯醇薄膜吸湿、透湿及释药性能研究

Pakistan Journal of Chemistry Pub Date : 2014-09-30 DOI: 10.15228/2014.V04.I03.P07

S. Bajpai, P. Dehariya, S. S. Saggu

引用次数: 3

A review on antitubercular activity of some 2-isonicotinoylhydrazinecarboxamide, 5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amine, N'-(E)-heteroaromatic-isonicotino-hydrazide and 1-(7-chloroquinolin-4-yl)-2-(heteroaromatic) methylene hydrazone derivatives 2-异烟碱酰肼甲酰胺、5-(吡啶-4-基)-1,3,4-恶二唑-2-胺、N'-(E)-杂芳香异烟碱酰肼和1-(7-氯喹啉-4-基)-2-(杂芳香)亚甲基腙衍生物的抗结核活性综述

Pakistan Journal of Chemistry Pub Date : 2014-09-30 DOI: 10.15228/2014.V04.I03.P06

M. Asif

{"title":"A review on antitubercular activity of some 2-isonicotinoylhydrazinecarboxamide, 5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amine, N'-(E)-heteroaromatic-isonicotino-hydrazide and 1-(7-chloroquinolin-4-yl)-2-(heteroaromatic) methylene hydrazone derivatives","authors":"M. Asif","doi":"10.15228/2014.V04.I03.P06","DOIUrl":"https://doi.org/10.15228/2014.V04.I03.P06","url":null,"abstract":"* M. Asif * Department of Pharmacy, GRD (PG) IMT, Dehradun, India. Email: * aasif321@gmail.com ABSTRACT The modification of the isoniazid (INH) structure and with N-substituted 5-(pyridine-4-yl)-1,3,4-oxadiazole-2-amine, 5-(pyridin4-yl)-1,3,4-oxadiazol-2-amine derivatives were evaluated in vitro for their anti-tubercular (anti-TB) activity against M. tuberculosis H37Rv, M. avium, M. kansasii and one clinical isolated strain of M. kansasii. 2-Isonicotinoyl-N-(4-octylphenyl) hydrazinecarboxamide displayed an in vitro efficacy comparable to that of INH for M. tuberculosis with MIC of 1–2 μM. Among the halogenated derivatives, the best anti-TB activity was found for 2-isonicotinoyl-N-(2,4,6-trichlorophenyl) hydrazine carboxamide (MIC=4μM). Most of the hydrazinecarboxamides exhibited significant activity against INH-resistant non tuberculous mycobacteria. Two other series of N ́-(E)-heteroaromatic-isonicotino hydrazide derivatives and 1-(7-chloroquinolin4-yl)-2-[(heteroaromatic)methylene]hydrazone derivatives have been for their in vitro anti-TB activity against M. tuberculosis H37Rv. Several compounds were non cytotoxic and exhibited significant MIC value (3.12, 2.50, 1.25, or 0.60 μg/mL) compared with ethambutol (3.12 μg/mL) and rifampicin (2.0 μg/ml). These results can be considered an important point for the rational design of new leads for anti-TB compounds.","PeriodicalId":19815,"journal":{"name":"Pakistan Journal of Chemistry","volume":"109 1","pages":"132-141"},"PeriodicalIF":0.0,"publicationDate":"2014-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73742401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of TiO2 Cathodes by Anodic Oxidation for Hydrogen Generation from Electrolysis of Water 电解水制氢用阳极氧化法制备TiO2阴极

Pakistan Journal of Chemistry Pub Date : 2014-09-30 DOI: 10.15228/2014.V04.I03.P03

I. Koyuncu, E. Kahraman

引用次数: 0

Growth Stimulation, Metabolic Activities and Fruit Yield of Tomato as Influenced by Fulvic Acid 黄腐酸对番茄生长、代谢和产量的影响

Pakistan Journal of Chemistry Pub Date : 2014-09-30 DOI: 10.15228/2014.V04.I03.P02

R. Khan, M. Z. Khan, M. Akhtar, A. Khan, S. Sarwar, S. Ahmad, A. Hayat

{"title":"Growth Stimulation, Metabolic Activities and Fruit Yield of Tomato as Influenced by Fulvic Acid","authors":"R. Khan, M. Z. Khan, M. Akhtar, A. Khan, S. Sarwar, S. Ahmad, A. Hayat","doi":"10.15228/2014.V04.I03.P02","DOIUrl":"https://doi.org/10.15228/2014.V04.I03.P02","url":null,"abstract":"1 M. Z. Khan, *1 R. U. Khan, 2 M. E. Akhtar, 1 A. Khan, 1 S. Sarwar, 3 S. Ahmad and 1 A. Hayat *1 Land Resources Research Institute, National Agricultural Research Centre, Islamabad-44000 Pakistan 2 PARC, Institute for Advance Studies in Agriculture (PIASA), NARC, Islamabad 3 Sugarcane Program, Crop Sciences Institute, Agricultural Research Centre, Islamabad-44000 Pakistan Email: * razahsan9@gmail.com ABSTRACT A pot experiment was conducted at Land Resources Research Institute, National Agricultural Research Centre (NARC), Islamabad during spring 2012 to study the effect of foliar applied fulvic acid (FA) on tomato grown under greenhouse conditions. Six kg sandy loam soil (Nabipur series mixed hyperthermic Udic Ustochrept) filled in plastic pot and grown with tomato plants (Riogrande). Basal dose of N, P, K, along with Zn, Fe, and B were applied @ 200, 150, 200, 10, 2 and 1 mg/kg soil FA was applied as foliar @ 0, 150, 300, 450 and 600 mg/l respectively. Results showed a significant increase in fruit yield, harvest index and other agronomic parameters with FA application. Besides macronutrients plant micronutrient concentration also increased with FA application which could be ascribed to stimulating effect of FA on enhanced biomass. Protein and chlorophyll contents of leaves also significantly changed with applied FA. Based on the results of the study it could be concluded that FA spray at 150 and 300 mg/ l were appropriate dose for maximum nutrient uptake by plant for optimum growth and maximize yield.","PeriodicalId":19815,"journal":{"name":"Pakistan Journal of Chemistry","volume":"34 1","pages":"100-108"},"PeriodicalIF":0.0,"publicationDate":"2014-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78069943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0