Volume 23

31

Research Article

Report on biphenyl-based synthetic polymers

R. N. Singh^*

Biphenyl and its suitably substituted analogues have shown their remarkable recognition in synthesizing various polymeric compounds of commercial importance. Some of them may be discussed as fibres, adhesive films, wire containing, optical and dental additives...

Keywords Biphenyls, fibres, adhesive films, rubbers adhesives, electrographic photoreceptors, dental and optica materials epoxy resins, etc.

pp. 167-170

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32

Research Article

Studies on in vitro biotic production of H3Cit exposed to ethanesufonyl chloride

Ram Suchit Prasad Singh , Shiv Shankar Sharma , Vinod Mandal

The efficacy of ethanesufonyl chloride on biotic production of H3Cit by fungal strains such as Aspergillus fischeri RS – 119, Aspergillus foetidus RS–215, Aspergillus aculeatus RS-313, Aspergillus carbonarius RS-418 and Aspergillus wentii RS- 519 has been asse...

Keywords Citric acid fermentation, ethanesufonyl chloride, Aspergillus wentii RS- 519

pp. 171-176

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33

Research Article

Impact of niacinamide on biotic production of lactic acid

Sheela Kumari , Vinod Mandal

The impact of niacinamide on biotic production of lactic acid by some lactic acid producing bacteria such as Lactobacillus casei SH-110, Lactobacillus pentosus SH-114, Lactobacillus leichmannii SH-116, Lactobacillus delbrueckii SH-118 and Lactobacillus acidoph...

Keywords Lactic acid fermentation, niacinamide, molasses, Lactobacillus pentosus SH-114, pH, temperature and incubation period.

pp. 177-180

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34

Research Article

Physicochemical characteristics of well water of Supaul (District) Bihar

Ashok Kumar Yadav^* , Vivekanand Vivek

Physicochemical characteristics like pH, turbidity, conductivity, total solid, total hardness as CaCO3, sulphate, nitrate, chloride, fluoride, magnesium, calcium, iron and arsenic of well-water of Supaul district, Bihar state have been studied for pre-and post...

Keywords Groundwater, well-water, physico-chemical parameters

pp. 181-192

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35

Research Article

Studies on biotic production of lactic acid exposed to ethosuximide

Sheela Kumari , Vinod Mandal

The efficacy of ethosuximide on biotic production of lactic acid by Lactobacillus pentosus SH -114 was assessed. The compound ethosuximide was found stimulatory when 15% (w/v) molasses solution was allowed to ferment at pH 6.1, temperature 340C and optimum inc...

Keywords Lactic acid fermentation, ethosuximide, Lactobacillus pentosus SH -114

pp. 193-196

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36

Research Article

Studies on metal-diethylenetriamine pentaacetic acid complexes as ligands

Govind Krishna Mishra

Potentiometric studies have been carried out on H3ML complexes where M represents divalent metal ions Cd, Hg, Co, Ni, Cu, Ca and Ba and L represents Diethylenetriamine pentaacetic acid (DTPA) using pH-titration technique. The protonation constants of H3ML comp...

Keywords Potentiometry/protonation constant/thermodynamic parameters/DTPA/H3ML type ligand

pp. 197-200

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37

Research Article

In vitro biotic production of H3Cit by Aspergillus wentii RS- 519 exposed to N-ethylideneethylenediamine

Ram Suchit Prasad Singh , Md. Tanveer Alam , Vinod Mandal , Renu Bala

The efficacy of N-ethylideneethylenediamine on biotic production of H3Cit by fungal strains such as Aspergillus fischeri RS – 119, Aspergillus foetidus RS–215, Aspergillus aculeatus RS-313, Aspergillus carbonarius RS-418 and Aspergillus wentii RS- 519 has been...

Keywords Citric acid fermentation, N-ethylideneethylenediamine and Aspergillus wentii RS- 519

pp. 201-206

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38

Research Article

Evaluation of protonation constants of binary complexes of diethylene triamine pentaacetic acid as ligands

Govind Krishna Mishra

Potentiometric studies have been carried out on H3ML and H2ML complexes where 'M' represents Mn(II), Zn(II), Pb(II), Hg(II), La(III), Ce(III), Pr(III) and Nd(III)and'L'represents diethylene triamine pentaacetic acid (DTPA) using Bjerrum-Calvin pH- titration te...

Keywords Potentiometry,protonation constants,metal-DTPA complexes

pp. 207-208

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39

Research Article

Acoustic and thermodynamic behavior of cobalt acetylacetonate in aqueous sodium hydroxide

Mahendra Singh

Viscosity (?) density (?) and ultrasonicvelocity (U) in binary mixtures of cobalt acetylacetonate with aqueousSodium Hydroxide were measured at 350C, 400C, 45ºC and atmosphericpressure by using a single-crystal interferometer at a frequency of 2MHz,The Paramet...

Keywords Ultrasonic velocity, cobalt acetylacetonate, Adiabatic compressibility, specific acoustic impedance, Intermolecular free length

pp. 209-212

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40

Research Article

Acoustic studies for binary mixtures of sulphadrug sulphadoxine and chloroform at 308 K

Anjul Singh

Densities, viscosities and ultrasonic velocities of binary mixtures of drug sulphadoxine with chloroform over entire composition range have been measured at 308 K. These data have been utilized to calculate acoustic parameters viz. isentropic compressibility,...

Keywords Ultrasonic velocity, sulphadoxine, Chloroform, isentropic compressibility, Specific acoustic impedance, intermolecular free length

pp. 213-216

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41

Research Article

Synthesis and antifungal evaluation of some novel benzopyridazines

Vandana Dwivedi

A series of some new 1-(substituted thioanilido)-8-Keto-3-substituted benzopyridazines (III) were prepared by reacting 4-aryl-3-thiosemicarbazides (I) with 2-carboxyl-(substituted benzophenones). Thiosemicarbazones(II), so formed on cyclodehydration gave the t...

Keywords Synthesis, Antifungal activities, Benzopyridazines

pp. 217-220

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42

Research Article

Variation of acoustic parameters with temperature for sulphathiazole and dioxane binary system

Anjul Singh

Densities, viscosities and ultrasonic velocities of binary mixtures of drug sulphathiazole with dioxane at a particular composition have been measured at 303K, 308 and 313 K temperature. These data have been utilized to calculate acoustic parameters viz. isent...

Keywords Ultrasonic velocity, sulphathiazole, Dioxane, isentropic compressibility, Specific acoustic impedance , intermolecular free length

pp. 221-224

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43

Research Article

Impact of variable concentrations of SO2 exposure on growth and morphological characters in Vigna radiata cv. BM-2003-02

Mukesh K. Bhardwaj^* , Jogander Singh

Sulphur dioxide is a hazardous gas and an important constituent of air pollution. Being an important pollutant it adversely affects the metabolic and physiological process of the plants. Due to these the overall reductions in growth and yield is reported (Blac...

Keywords Sulphur Dioxide, Morphological Attributes, Growth Attributes, Exposure, Variable Concentrations, Vigna radiata

pp. 225-228

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44

Research Article

New saponin from the stem bark of Samanea Saman

Nidhi Srivastava^*

From the stem bark of Samanea saman new triterpenoid glycoside have been isolated and characterized as 3?, 22? – dihydroxyolean -12-ene-24-O-?-D-galactopyranoside 1 by spectral data and chemical studies.

Keywords Samanea saman, new triterpenoid glycoside

pp. 229-232

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45

Research Article

Synthesis, structures and reactivities of water soluble aromatic thiocarboxamides Fe3III nitrosyl complexes

K. K. Singh^*

The new water soluble iron nitrosyls derived from aromatic carboxamide ligands (RCONHCOR’) hereafter referred to as LH (where H is dissociable amide proton) have been Structurally characterised on the basis of analytical, spectral (1R, UV and Visible), magneti...

Keywords Iron, aromatic carboxamide, wave number, bathochromic shift, magnetic moment

pp. 233-238

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