Showing papers by "University of Rajasthan published in 1989"
TL;DR: An ethanolic extract of the rhizomes of Zingiber officinale was investigated for anti-inflammatory, analgesic, antipyretic, antimicrobial and hypoglycaemic activities in rats and rabbits and was ineffective in suppressing the writhing induced by intraperitoneal acetic acid.
298 citations
TL;DR: Histological evidence revealed direct differentiation of buds from cotyledons and unorganized callus could not be induced to differentiate shoot buds and Regenerated plants were normal diploids.
Abstract: Leaf, stem, hypocotyl, cotyledon, root, shoot tip and embryo explants of Capsicum annuum L. cv. mathania were cultured on Murashige and Skoog (MS) medium supplemented with 6-benzylaminopurine (BAP) or kinetin (Kin) alone or in combination with 3-indoleacetic acid (IAA), 3-indolebutyric acid (IBA), α-naphthaleneacetic acid (NAA) or 2,4-dichlorophenoxyacetic acid (2,4-D). BAP (5.0 mgl−1) in the medium was found to be the best growth regulator for shoot bud differentiation. Shoot buds cultured on 5.0 mgl−1 BAP increased in number but did not elongate. For obtaining complete plantlets, shoot buds were placed on a medium with IBA or NAA (0.1 mgl−1). Histological evidence revealed direct differentiation of buds from cotyledons. Regenerated plants were normal diploids. Unorganized callus could not be induced to differentiate shoot buds.
109 citations
TL;DR: Simultaneous administration of testosterone propionate to F-treated intact adult and castrated prepubertal dogs maintained the viability of spermatozoa, kept epididymal physiology relatively normal and significantly increased the cellular heights of epididysmides.
92 citations
TL;DR: In this article, the multiplicity distributions of shower particles are measured in inclusive inelastic oxygen emulsion interactions and scaling is observed in the normalized variable ns/〈ns〉 for 14.6, 60 and 200 AGeV.
47 citations
TL;DR: In this paper, the pseudo-rapidity density distributions of shower particles were measured in central inelastic S + Au and S + Ag,Br inter-actions, and the extracted maximum energy densities, while being higher for Au than for Ag, were found to be similar to those obtained for oxygen emulsion interactions.
42 citations
TL;DR: A petrol extract of the heartwood of Tectona qrandis afforded a new 9,10-dimethoxy-2-methyl anthra-1,4- quinone along with tecomaquinone I and several known naptho- and anthraquinone derivatives as discussed by the authors.
30 citations
TL;DR: In this paper, substitution reactions of arsenic (III) and antimony(III) acetates with alkylene dithiophosphoric acids in stoichiometric ratios yield mixed complexes, M(OAc)3-x(S2 )x where M = As or Sb, x = 1 or 2 and G = CH2CMe2CH2, CH2CEt2CH 2, CMe2CME2, and CHMeCHMe 2.
Abstract: Replacement reactions of arsenic(III) and antimony(III) acetates with alkylene dithiophosphoric acids in stoichiometric ratios yield mixed complexes, M(OAc)3–x(S2 )x where M = As or Sb, x = 1 or 2 and G = –CH2CMe2CH2–,–CH2CEt2CH2–, –CMe2CMe2–, and –CHMeCHMe–). These derivatives are hydrolizable, yellow/orange powders with varying solubilities in organic solvents. IR and NMR (1H, 13C and 31P) studies indicate bi- arid uni-dentate behaviour of dithiophosphate and acetate moieties, respectively, in these complexes.
25 citations
TL;DR: A theoretical analysis of acoustic-like modes in a plasma consisting of two kinds of ions with different temperatures has been performed using fluid equations as mentioned in this paper, where the electrons are assumed to form a dynamic neutralizing background, and their perturbation has been neglected.
Abstract: A theoretical analysis of acoustic-like modes in a plasma consisting of two kinds of ions with different temperatures has been performed using fluid equations. The electrons are assumed to form a dynamic neutralizing background, and their perturbation has been neglected – which is permissible for k 2 λ 2 De ≫ 1. The analysis shows that an acoustic-like mode appears to propagate as a normal mode when the hotter ion concentration is very large compared with that of the colder ions.
24 citations
TL;DR: In this article, the octahedral environment around molybdenums with chelating dithiophosphate moieties and anti terminal oxygens has been deduced on the basis of the IR and NMR (1H, 13C, 31P) spectral studies.
24 citations
TL;DR: In this article, an elegant one-step synthesis of two spiro ring systems viz: spiro[3H-indole-3,4′-(2′-amino-3-carbonitrile-[4′H]-pyrano[3,2-c]benzopyran)]-2,5′(1H)-dione8 and spiro
22 citations
TL;DR: The reaction of fluorinated phenylthioureas, with some new fluorine-containing 3-(2-oxocycloalkylidene) indol-2-ones (2) in ethanolic KOH medium, yielded a series of new fluorines containing 5′, 6′-cyclopenta-2′-thioxo-3′-phenyl spiro [3H-indole-3,4′(3′H)-quinazolin] -2(1H)-ones in 55-68% yields RE
TL;DR: In this paper, the reaction of InCl3 and the sodium salts of 2-alkylaminocyclopentene-1-carbodithioic acids, R(H)NC(CH2)3CC(S)SH (where R = H, Me, Et and n-Bu) and esters of the parent acid, H2NC (CH2)-C(C)S)SR1 (where r1 = Me and CH2NEt2) in 1: 3 molar ratios, yield derivatives with the general form
TL;DR: In this paper, a pentacoordinated 2,9-dimethyl-1,10-phenanthroline adducts of nickel(II) with the general formula (where G(OH)2 = 2,3dimethylbutane-2,3-diol, 2- methylpentane -2,4diol and 2-methylpentane 2,5diol) have been prepared by the reactions of O, O-alkylene dithiophosphates of nickel (II), with 2, 9dimethyl 1,10
TL;DR: A few bimetallic alkoxides of the types [MSn(OR)3], [Sb(Sn(Or)3)3] and [Pb(Sb-OR)4)2] have been prepared and characterized as mentioned in this paper.
Abstract: A few bimetallic alkoxides of the types [MSn(OR)3], [Sb(Sn(OR)3)3] and [Pb(Sb(OR)4)2] [M = Na, K, R = CH3, C2H7, n and i-C3H7, n and i-C4H9 and i-C5H11] have been prepared and characterized. These are generally coloured solids or viscous liquids. These are monomeric and covalent in nature and are hydrolytically unstable to atmospheric moisture. IR, 1H and 13C and 119Sn NMR studies suggest 3-coordination around tin in these derivatives.
TL;DR: Fluctuations in particle densities of non-statistical origin are studied in central 16 O+Ag(Br) and 32 S+Au interactions at 200 A GeV.
TL;DR: In this paper, the synthesis of fluorinated 4H-1,4-benzothiazines can be effected by the condensation and oxidative cyclization of substituted 2-aminobenzenethiols with β-diketone (p-fluorobenzoylacetone) in DMSO.
TL;DR: In this article, a cylindrically symmetric inhomogeneous cosmological model with electromagnetic field for perfect fluid distributions is obtained, and a supplementary condition A=(BC) n between metric potentials is used whereA, B, and C are functions of bothx andt andn is a constant.
Abstract: A cylindrically symmetric inhomogeneous cosmological model with electromagnetic field for perfect fluid distributions is obtained. To get a determinate solution, a supplementary conditionA=(BC)
n
between metric potentials is used whereA, B, andC are functions of bothx andt andn is a constant. Some physical and geometrical properties of the model and behavior of electromagnetic field tensors are also discussed.
TL;DR: The antispermatogenic action of palmitine hydroxide may be mediated by disturbances in Leydig cell function and protein, sialic acid and glycogen content and acid phosphatase activity of testes and epididymides were lowered to varying extents.
TL;DR: Some new penta-and hexa-coordinated diorganotin complexes of heterocyclic β-diketones having the general formula (n-C4H9)2Sn(OPr1)2−n[RCOC:CON(C6H5) N:CCH3]n have been synthesized and were screened for their insecticidal activity against Rhizopertha dominica (Fabricius), the lesser grain borer.
Abstract: Some new penta-and hexa-coordinated diorganotin complexes of heterocyclic β-diketones having the general formula (n-C4H9)2Sn(OPr1)2−n[RCOC:CON(C6H5) N:CCH3]n (where RCH3, C6H5 and p-ClC6H4 and n = 1 and 2) have been synthesized and were screened for their insecticidal activity against Rhizopertha dominica (Fabricius), the lesser grain borer. The hexa-coordinated complexes have been observed to be more active than the penta-coordinated complexes.
TL;DR: Some new fluorine containing spiro-xanthenes and spiroacridines have been synthesized by the reaction of fluorinated indole-2,3diones with 1,3-cyclohexanedione by three different routes as mentioned in this paper.
Journal Article•
TL;DR: Anaemia is the most prevalent nutritional disease in the world and half of the one billion children in the Third World are anaemic as are 60 per cent of the pregnant women in these countries.
Abstract: Anaemia is the most prevalent nutritional disease in the world. According to UNICEF half of the one billion children in the Third World are anaemic as are 60 per cent of the pregnant women in these countries. Even in the industrialised countries 10 per cent of the children are anaemic.
TL;DR: It appears that the mice probably developed some resistance to the pesticide, when exposed for such a long duration, after being exposed to phosphamidon for 60 days prior to mating and during gestation.
Abstract: Phosphamidon, an organophosphate pesticide, is little known for its possible effects on mammalian conceptus. The present investigation was carried out to evaluate its embryotoxic and teratogenic effects on Swiss albino mice. Female mice of similar age and weight were divided into four experimental groups. The animals of groups I and II received 15 and 35 ppm phosphamidon ad libitum, respectively, during the entire gestational period, that is, from days 1 to 18. Groups III and IV were treated before mating with 35 ppm phosphamidon for 30 and 60 days, respectively, and the treatment was continued during pregnancy up to the 18th day. The autopsies were performed on the 18th day of gestation, and routine teratological observations were made. The lower dose did not produce significant effects. The higher dose reduced the number of implants, litter size, and foetal weight and increased the resorption of embryos when administered for 30 days prior to mating. Exposure to the pesticide for 60 days prior to mating and during gestation, however, did not produce significant effects. It appears that the mice probably developed some resistance to the pesticide, when exposed for such a long duration.
TL;DR: In this article, the energy dependence of grey prong producing particles in 16 O+ emulsion interactions at energies from 2.1 to 200 A GeV was investigated and it was shown that multiplicity and angular distributions as well as the impact parameter dependence are energy independent.
TL;DR: In this article, the thermal conductivity and thermal diffusivity of four composite building materials, namely black marble stone, normal building stone, red sand brick and cement brick have been made at room temperature using the transient hot-strip method.
Abstract: Simultaneous measurements of the thermal conductivity and thermal diffusivity of four composite building materials, namely black marble stone, normal building stone, red sand brick and cement brick have been made at room temperature using the transient hot-strip method. The power supplied to these samples is quite large compared with that for loose building materials owing to their composite (brick) nature. The temperature dependence of thermal conductivity and thermal diffusivity of these materials has also been investigated in a temperature range from 10 to 60°C. Temperature stability is assured within 0.1°C by using a platinum resistance thermometer in the chamber containing samples and a digital voltmeter to record any variation in resistance. The results of these experiments show that there is a very slight variation in thermal conductivity and thermal diffusivity of these materials in this temperature range.
TL;DR: The trifluoroacetanilides were nitrated, reduced and cyclised with carbon disulphide in the presence of alcoholic potassium hydroxide and finally treated with formaldehyde and suitable secondary amines to afford the Mannich bases as mentioned in this paper.
Journal Article•
TL;DR: In this article, the authors studied the major element chemistry of the Malani volcanic suite of Precambrian age and found that the trace element abundances of these volcanics point to their crustal source.
Abstract: Felsic volcanics of the Gurapratap Singh and Diri, belong to the Malani volcanic suite of Precambrian age. Major element chemistry of these volcanics shows systematic variations with progress of differentiation. The distribution and behaviour of trace elements in these rocks is in accord with their major element data and the distribution patterns are normal with no anomalous concentrations of the elements studied. With the progress of fractionation there is a smooth decrease in Sr and increase in Rb which along with Ba are the main trace contents of these rocks. Unlike Sr and Rb which have a linear distribution pattern, Ba shows a curvilinear trend, i.e., an initial increase from andesite to dacite and rhyodacite followed by a decrease amongst rhyolites. The behaviour of ratios like Ni/Co, Fe/Zn, Mg/Li and K/Rb agrees with a model of fractional crystallisation. Furthermore, the trace element abundances of the volcanics point to their crustal source. The work also shows that in felsic magmas Ba and Sr are sensitive indicators for tracing possible differentiation and that rhyolitic rocks depleted in Ba are enriched in Rb and that in last stages of differentiation Ba/Rb ratio shows rapid decrease.
TL;DR: In this article, an experimental study has been done to investigate the heat conduction and moisture distribution through the different layers of unsaturated soil, where soil is taken in the form of cylindrical columns in vertical and horizontal positions.
Abstract: An experimental study has been done to investigate the heat conduction and moisture distribution through the different layers of unsaturated soil. The soil is taken in the form of cylindrical columns in vertical and horizontal positions. The two ends of the cylindrical column were maintained at different constant temperature. The effective thermal conductivity was measured by dynamical method after achieving steady state. The distribution of moisture in the soil column was determined by gravimetric technique. The effective thermal conductivity (ETC) has also been predicted by temperature dependent model developed by Singhet al (1988). A close agreement has been found in experimental and predicted values of ETC.
TL;DR: In this article, a 1: 1 molar ratio of diphenylantimony chloride with the sodium salts of O,O-dialkyldithiophosphoric acids in benzene solution yield neutral complexes with the general formula (RO)2PS2SbPh2 (where R = CH3, C2H5, n-C3H7 i-C 3H7 I-C 4H7 N-C4H9 i-c 4H9).
Abstract: Reactions of diphenylantimony chloride with the sodium salts of O,O-dialkyldithiophosphoric acids in 1: 1 molar ratio in benzene solution yield neutral complexes with the general formula (RO)2PS2SbPh2 (where R = CH3, C2H5, n-C3H7 i-C3H7 n-C4H9 i-C4H9). These complexes are monomeric in nature and have been characterized by IR, fH, 13C and 31P NMR spectroscopy. The 31P nmr spectral data are consistent with the chelating behaviour of the dithiophosphate moieties.
TL;DR: In this article, the reaction of 3-(2-oxocycloalkylidene)indol-2-one with thiourea and urea derivatives has been investigated.