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Showing papers by "University of Rajasthan published in 2002"


Journal Article
TL;DR: Carica papaya seed extract may selectively act on the developing germ cells, possibly mediated via Sertoli cells, leading to azoospermia.
Abstract: Aim To evaluate the antifertility activity of the chloroform extract of Carica papaya seeds by oral administration in langur monkey, Presbytis entellus entellus. Methods The chloroform extract of Carica papaya seeds, 50 mg/kg/day, was administered orally for 360 days to adult male langur monkeys. The sperm characteristics by light and electron microscopy, the sperm functional tests, the semen biochemistry, the serum testosterone level, the Leydig cell function, and the histology and ultrastructure of testis were determined to evaluate the antifertility activity and the blood biochemistry and hematology, to evaluate the toxicology. Results The extract gradually decreased the sperm concentration since days 30-60 of treatment with a total inhibition of sperm motility, a decrease in sperm viability and increase in sperm abnormality. Azoospermia was observed after day 90 of treatment and continued during the whole treatment period. Treatment withdrawal resulted in a gradual recovery in these parameters and 150 days later they reverted to nearly the pretreatment values. Morphological observation of the ejaculated sperm by light and scanning electron microscopy showed deleterious changes, particularly on the mid-piece. Sperm functional tests, viz., sperm mitochondrial activity index, acrosome intactness test and hypo-osmotic swelling test scored in the infertile range during treatment and returned to the fertile values 150 days after drug withdrawal. Histology of the testis revealed shrunken tubules, germ cell atrophy and normal Leydig cells. Ultrastructure of the testis showed vacuolization in the cytoplasm of Sertoli cells and germ cells. Loss of cytoplasmic organelles were evident in the spermatocytes and spermatids. Round spermatids showed loss of Golgi bodies, peripheral mitochondria and vacuolated cytoplasm, indicating maturational arrest. Leydig cell functional test indicated a mild inhibition of steroidogenic function. Haematology and serum biochemistry study disclosed no significant toxicological effect and the serum testosterone level was not affected. Conclusion Carica papaya seed extract may selectively act on the developing germ cells, possibly mediated via Sertoli cells, leading to azoospermia.

137 citations


Journal ArticleDOI
TL;DR: The results confirm the use of this plant in folk medicine as an anti-inflammatory and antimicrobial herbal drug and show the antimicrobial effect observed was lower at the two doses employed.

118 citations


Journal ArticleDOI
TL;DR: The results indicated that organochlorine pesticides taken for analysis were found significantly high in breast cancer patients irrespective of age, diet, and geographic distribution.

104 citations


Journal Article
TL;DR: The results suggest that oral administration of Ocimum extract provides protection against HgCl2 induced toxicity in Swiss albino mice.
Abstract: HgCl 2 (5.0 mg/kg body weight) induced toxicity led to significant elevation of lipid peroxidation (LPO) level but decline in the glutathione content in liver of Swiss albino mice. In serum of HgCl 2 treated mice there was significant elevation in serum glutamate oxaloacetate transaminase (SGOT) and serum glutamate pyruvate transaminase (SGPT) activities but significant decline in the alkaline phosphatase activity. Animals treated with O. sanctum extract (10 mg/kg body weight, po) before and after mercury intoxication showed a significant decrease in LPO level, SGOT and SGPT activities and increase in serum alkaline phosphatase activity and glutathione (GSH) content. Ocimum treatment alone did not alter SGOT, SGPT and alkaline phosphatase activities but significantly enhanced reduced glutathione. The results suggest that oral administration of Ocimum extract provides protection against HgCl 2 induced toxicity in Swiss albino mice.

77 citations


Journal ArticleDOI
TL;DR: The 50% ethanol extract of M. annua root produced dose related effects on male reproduction without altering general body metabolism, and the testis showed a clear correlation between the dose and severity of lesions of seminiferous epithelium.

68 citations


Journal ArticleDOI
TL;DR: In this paper, the reaction between Ph3SbBr2 and sodium salt of internally functionalized oximes in 1:2 molar ratio in refluxing anhydrous benzene afforded [Ph 3Sb{ON=C(R)Ar}(2)]

61 citations


Journal Article
TL;DR: S. acidum stem extract arrests spermatogenesis in male rats without noticable side effects, and protein and glycogen content of the testes, fructose in the seminal vesicle and protein in epididymides were significantly decreased, and cholesterol in theTestes was elevated.
Abstract: Aim: To evaluate the possible antifertility activity of Sarcostemma acidum (Roxb) Voigt. stem extract in male rats. Method: Male rats were given 70% methanol extract of S. acidum stem orally at dose levels of 50 and 100 mg/kg/day for 60 days. Fertility was evaluated with mating test. Sperm motility and sperm density in cauda epididymides were also assessed. Biochemical and histological analyses were performed on blood samples and on the reproductive organs. Results: S. acidum stem extract resulted in an arrest of spermatogenesis without any systemic side effect. Sperm motility as well as sperm density was reduced significantly. Treatment caused a 80% reduction in fertility at the 50 mg dose and complete suppression of fertility at the 100 mg dose. There was no significant change in RBC and WBC count, hemoglobin, haematocrit, sugar and urea in the whole blood and cholesterol, protein and phospholipid in the serum. The protein and glycogen content of the testes, fructose in the seminal vesicle and protein in epididymides were significantly decreased. Cholesterol in the testes was elevated. Treatment at both of the doses caused a marked reduction in the number of primary spermatocytes (preleptotene and pachytene), secondary spermatocytes and spermatids. The number of mature Leydig cells was decreased, and degenerating Leydig cells was increased proportionately. Conclusion: S. acidum stem extract arrests spermatogenesis in male rats without noticable side effects.

60 citations


Journal ArticleDOI
TL;DR: This protocol is useful for clonal micropropagation and for Agrobacteriummediated gene transfer in D. chinensis and needs to be subcultured on BAP and NAA supplemented medium for elongation, while the shoot buds induced on B AP and N AA supplemented medium elongated in the primary culture itself.

59 citations


Journal Article
TL;DR: At the dose level employed, Alstonia scholaris bark extract has a significant antifertility effect in male rats; the primary site of action may be post meiotic germ cells (Step 19 spermatids).
Abstract: AIM To evaluate the antifertility effect of Alstonia scholaris bark extract in male rats. METHODS In male Wistar rats Alstonia scholaris bark extract was given by oral route at a dose of 200 mg/day for 60 days. The fertility and testicular function were assessed by mating tests, sperm motility, sperm concentration, biochemical indices and testicular cell population dynamics. RESULTS Oral feeding with the extract at a dose of 200 mg/day for the period of 60 days did not cause body weight loss, while the weights of testes, epididymides, seminal vesicle and ventral prostate were significantly reduced. The production of step-19 spermatids was reduced by 79.6% in treated rats. The population of preleptotene and pachytene spermatocytes were decreased by 61.9% and 60.1%, respectively. Spermatogonia and Sertoli cell population were also affected. The seminiferous tubule and Leydig cell nuclear area were reduced significantly (P<0.01) when compared to the controls. Reduced sperm count and motility resulted in a total suppression of fertility. A significant fall in the protein and sialic acid content of the testes, epididymides, seminal vesicle and ventral prostate as well as glycogen content of testes were also noticed. The fructose content in the seminal vesicle was lowered whereas the testicular cholesterol was elevated as compared with the controls. The following compounds were obtained from the extract with chromatographic separation over Si-gel column: agr-amyrin, bgr-amyrin, lupiol acetate, venenative, rhazine and yohimbine. CONCLUSION At the dose level employed, Alstonia scholaris bark extract has a significant antifertility effect in male rats; the primary site of action may be post meiotic germ cells (Step 19 spermatids).

57 citations


Journal ArticleDOI
TL;DR: Triorganoantimony (V) complexes with internally functionallized oximes of the type [R3Sb{ONC(Me)Ar}2] have been prepared by the reaction of R 3SbBr2 with the corresponding oximes in 1:2 molar ratio in anhydrous benzene as discussed by the authors.

56 citations


Journal ArticleDOI
TL;DR: Centella asiatica, a rasayan (general tonic), brain tonic, improves memory and strengthens the CNS, was tested for its radioprotective properties and the dose that was most effective against radiation was 100 mg/kg body weight.
Abstract: Centella asiatica, has a considerable reputation in the Indian system of medicine. It is a rasayan (general tonic), brain tonic, improves memory and strengthens the CNS. In view of its multifarious uses, the plant extract was tested for its radioprotective properties. A sublethal dose of Co60 gamma radiation, i.e. 8 Gy was selected for the purpose. Animals were divided into two groups. The whole bodies were irradiated with Co60 gamma radiation externally, with and without drug extract. The drug extract was given orally at different doses and for different time intervals. The dose that was most effective against radiation was 100 mg/kg body weight. This dose increased the survival time of the mice significantly. Body weight loss of the animals in the drug treated group was significantly less in comparison with the animals that were given radiation only. The causes and mechanism of protection and other aspects need further investigations. Copyright © 2002 John Wiley & Sons, Ltd.

Journal ArticleDOI
Madan M. Aggarwal1, Zubayer Ahammed2, A.L.S. Angelis3, V.G. Antonenko4, V. Arefiev5, V. Astakhov5, V. Avdeitchikov5, T. C. Awes6, P.V.K.S. Baba7, S. K. Badyal7, S. Bathe8, B. Batiounia5, T. Bernier9, K. B. Bhalla10, V. S. Bhatia1, C. Blume8, D. Bucher8, H. Büsching8, Lars Carlén11, Sukalyan Chattopadhyay2, M. P. Decowski12, H. Delagrange9, P. Donni3, M. R. Dutta Majumdar2, K. El Chenawi11, A. K. Dubey13, K. Enosawa14, Sergey Fokin4, Vladimir Frolov5, M. S. Ganti2, S. Garpman11, O. P. Gavrishchuk5, F. J M Geurts15, T. K. Ghosh16, R. Glasow8, B.N. Gus'kov5, H. A. Gustafsson11, H. H. Gutbrod17, I. Hrivnacova18, Mikhail Ippolitov4, H. Kalechofsky3, K. Karadjev4, Krzysztof Karpio, B. W. Kolb17, I. Kosarev5, I. Koutcheryaev4, A. Kugler18, P. Kulinich12, M. Kurata14, A.L. Lebedev4, Herbert Löhner16, L. Luquin9, D. P. Mahapatra13, Vladislav Manko4, MV Manzano Martin3, G. Martínez9, A. Maximov5, Yasuo Miake14, G. C. Mishra13, Bedangadas Mohanty13, M. J. Mora9, D. P. Morrison19, T. Mukhanova4, D. S. Mukhopadhyay2, H. Naef3, B. K. Nandi13, S. K. Nayak7, T. K. Nayak2, A. Nianine4, V. Nikitine5, S. Nikolaev5, Peter M. Nilsson11, Shunji Nishimura14, Petr Nomokonov5, Joakim Nystrand11, Agneta Oskarsson11, I. Otterlund11, T. Peitzmann8, D. Y.-U. Peressounko4, V. Petracek18, S. C. Phatak13, W. Pinganaud9, F. Plasil6, M. L. Purschke17, Jan Rak18, Rashmi Raniwala10, Sudhir Raniwala10, N. K. Rao7, F. Retiere9, Klaus Johannes Reygers8, Gunther Roland12, L. Rosselet3, I. Roufanov5, C. Roy9, J. M. Rubio3, Sanjeev Singh Sambyal7, R. Santo8, Susumu Sato14, H. Schlagheck8, Hans Rudolf Schmidt17, Y. Schutz9, G.S. Shabratova5, T. H. Shah7, I. Sibiriak4, Teodor Siemiarczuk, David Olle Rickard Silvermyr11, Bikash Sinha2, Nikolai V Slavine5, K. Söderström11, G. Sood1, S. P. Sorensen19, P. W. Stankus6, G. Stefanek, P. Steinberg12, E. Stenlund11, Michal Sumbera18, T. Svensson11, A. A. Tsvetkov4, L. Tykarski, E. C. v. d. Pijll15, N. v. Eijndhoven15, Gerrit Jan van Nieuwenhuizen12, A. A. Vinogradov4, Y. P. Viyogi2, A.S. Vodopianov5, S. Vörös3, Bolek Wyslouch12, G. R. Young6 
TL;DR: In this paper, the effect of detector acceptance on the multiplicity fluctuations has been studied and demonstrated to follow statistical considerations, and the centrality dependence of the charged particle multiplicity fluctuation has been found to agree reasonably well with those obtained from a participant model.
Abstract: Event-by-event fluctuations in the multiplicities of charged particles and photons, and the total transverse energy in 158A GeV Pb+Pb collisions are studied for a wide range of centralities. For narrow centrality bins the multiplicity and transverse energy distributions are found to be near perfect Gaussians. The effect of detector acceptance on the multiplicity fluctuations has been studied and demonstrated to follow statistical considerations. The centrality dependence of the charged particle multiplicity fluctuations in the measured data has been found to agree reasonably well with those obtained from a participant model. However, for photons the multiplicity fluctuations have been found to be lower compared to those obtained from a participant model. The multiplicity and transverse energy fluctuations have also been compared to those obtained from the VENUS event generator.

Journal ArticleDOI
TL;DR: In this article, a Bianchi type-III string cosmological model with bulk viscous fluid for massive string is investigated, and the behaviour of the model in presence and absence of bulk viscosity is discussed.
Abstract: A Bianchi type-III string cosmological model with bulk viscous fluid for massive string is investigated. To get a determinate solution, a supplementary condition B=Cn, between metric potentials, is used whereB and C are function of time alone. The behaviour of the model in presence and absence of bulk viscosity, is discussed.

Journal ArticleDOI
TL;DR: In this paper, a green chemistry procedure for the synthesis of 8-substituted carboxy-2,3-dihydro-1,5-benzothiazepines under microwave irradiation and solvent free conditions is described.

Journal ArticleDOI
TL;DR: Oral administration of Opuntia dillenii phylloclade extract to male rats caused a significant decrease in the weights of testes, epididymides, seminal vesicle, and ventral prostate, andMotility of the spermatozoa was reduced significantly.
Abstract: Oral administration of Opuntia dillenii phylloclade extract to male rats caused a significant decrease in the weights of testes (P < 0.001), epididymides (P < 0.01), seminal vesicle (P < 0.001) and ventral prostate (P < 0.01). The production of spermatid was reduced by 88.06% in Opuntia treated rats. The populations of preleptotene spermatocytes and spermatogonia were reduced by 59.7 and 61.65% and secondary spermatocytes by 63.32%, respectively. The cross sectional surface area of Sertoli cells was decreased significantly. The seminiferous tubule and Leydig cell nuclear area were reduced significantly (P < 0.001) when compared to controls. Motility of the spermatozoa was reduced significantly. Opuntia reduced the fertility of male rats by 100%.

Journal ArticleDOI
TL;DR: Five pyrrolizidine alkaloids have been isolated from Heliotropium subulatum and tested for their antimicrobial activity.

Journal ArticleDOI
TL;DR: Paleoproterozoic carbonatites of Tamil Nadu, southern India, have been investigated for whole-rock geochemistry and Nd, Sr and C-O isotopes.

Journal ArticleDOI
TL;DR: In this article, two sets of chemical shifts are observed in the Sn-119-NMR spectra of all of these compounds indicating the presence of two types of environment around the tin atoms in solution.

Journal ArticleDOI
TL;DR: It is found that the system supports ion-acoustic double layers only when the negative-ion concentration (alpha) is greater than the critical concentration alpha(R) and above it rarefactive double layers exist.
Abstract: Propagation of ion-acoustic double layers has been studied in plasma consisting of warm positive- and negative-ion species with different masses, concentrations, and charge states along with electrons with two-electron temperature distributions. It is found that there exist two critical concentrations of negative ions, ${\ensuremath{\alpha}}_{R}$ and ${\ensuremath{\alpha}}_{Q}.$ One of them $({\ensuremath{\alpha}}_{R})$ generally decides the existence of the double layer, whereas the other one $({\ensuremath{\alpha}}_{Q})$ decides the nature of the double layer. It is found that the system supports ion-acoustic double layers only when the negative-ion concentration (\ensuremath{\alpha}) is greater than the critical concentration ${\ensuremath{\alpha}}_{R}.$ It is also found that below the critical concentration ${\ensuremath{\alpha}}_{Q},$ compressive double layers exist and above it rarefactive double layers exist. For some values of cold-electron concentrations (\ensuremath{\mu}) it is found that if the temperature of the negative-ion species is higher than the positive-ion species, then the system supports compressive double layers for all values of \ensuremath{\alpha} lying in the range $0l\ensuremath{\alpha}l{\ensuremath{\alpha}}_{Q}.$ The dependence of the critical concentrations on the temperatures of the two-ion species and on the concentration of cold electrons has also been investigated.

Journal ArticleDOI
TL;DR: Out of the analyzed pesticides, the concentration of p,p'-DDT and its metabolites was higher in all the subjects, but dieldrin was found to be significantly high in the hypothyroid women, and the correlation analysis for d yieldrin and depleted T4 levels in hypothyroxine women elicited an inverse relationship between them.

Journal ArticleDOI
TL;DR: In this paper, a new class of coordination compounds with a sulfur-containing ligand moiety derived by the condensation of 1-acetylferrocene and thiosemicarbazide is described.
Abstract: The coordination and organometallic chemistry of metal–nitrogen- and metal–sulfur-bonded compounds have come to occupy a prominent position in research due to their economical importance in the field of agricultural, medicinal and industrial chemistry. Although Schiff bases of ferrocene derivatives and their metal complexes with lanthanide and transition metal ions have been synthesized and some of their structures characterized, their interaction with main group metal ions and the formation of their coordination complexes are subjects of current interest. This communication deals with a description of synthetic procedure and structural characterization on the basis of analytical and spectroscopic techniques of a new class of coordination compounds of organotin(IV) and organosilicon(IV) with a sulfur-containing ligand moiety derived by the condensation of 1-acetylferrocene and thiosemicarbazide. Finally, attempts have been made to establish a correlation between a variety of biointeraction activities, including antimicrobial activity and antifertility activity, on male rats and the structures of the resulting products on the basis of different constituents and chemical phenomena. Copyright © 2002 John Wiley & Sons, Ltd.

Journal ArticleDOI
TL;DR: Aqueous solution of the extract when administered orally to male mice of proven fertility for 20, 40 and 60 days caused inhibition of fertility while maintaining their normal sexual behaviour, and all the induced effects returned to normalcy within 30 days following withdrawal of 60-day treatment.

Journal ArticleDOI
TL;DR: In this paper, a P-bridging dimer with a planar Ni2P2 ring and trans-configuration of two planar heterocyclic phosphido ligands arranged perpendicular to the four-membered ring is presented.
Abstract: 1H-1, 3-Benzazaphospholes react with M(CO)5(THF) (M = Cr, Mo, W) to give thermally and relatively air stable η1-(1H-1, 3-Benzazaphosphole-P)M(CO)5 complexes. The 1H- and 13C-NMR-data are in accordance with the preservation of the phosphaaromatic π-system of the ligand. The strong upfield 31P coordination shift, particularly of the Mo and W complexes, forms a contrast to the downfield-shifts of phosphine-M(CO)5 complexes and classifies benzazaphospholes as weak donor but efficient acceptor ligands. Nickelocene reacts as organometallic species with metalation of the NH-function. The resulting ambident 1, 3-benzazaphospholide anions prefer a μ2-coordination of the η5-CpNi-fragment at phosphorus to coordination at nitrogen or a η3-heteroallyl-η5-CpNi-semisandwich structure. This is shown by characteristic NMR data and the crystal structure analysis of a η5-CpNi-benzazaphospholide. The latter is a P-bridging dimer with a planar Ni2P2 ring and trans-configuration of the two planar heterocyclic phosphido ligands arranged perpendicular to the four-membered ring. Metallierte 1, 3-Azaphosphole: η1-(1H-1, 3-Benzazaphosphol-P)M(CO)5 und μ2-[(1, 3-Benzazaphospholid-P)(cyclopentadienid)nickel] Komplexe 1H-1, 3-Benzazaphosphole reagieren mit M(CO)5(THF) (M = Cr, Mo, W) zu thermisch und zumindest kurzzeitig luftstabilen η1-(1H-1, 3-Benzazaphosphol-P)M(CO)5-Komplexen. Die 1H- und 13C-NMR-Daten sind mit dem Erhalt des phosphaaromatischen π-Systems im Liganden im Einklang. Die starke 31P-Koordinationsverschiebung zu hohem Feld, vor allem der Mo- und W-Komplexe, steht im Gegensatz zur Koordinationsverschiebung zu tiefem Feld, beobachtet bei Phosphin-M(CO)5 Komplexen, und verweist auf schwache Donator-, aber gute Akzeptoreigenschaften der Liganden. Nickelocen reagiert als Ubergangsmetallorganyl unter Metallierung der NH-Funktion. Die resultierenden ambidenten 1, 3-Benzazaphospholid-Anionen bevorzugen eine μ2-Koordination des η5-CpNi-Fragments am Phosphor gegenuber N-Koordination oder einer η3-Heteroallyl-η5-CpNi-Semisandwich-Struktur. Dies wird durch charakteristische NMR-Daten und die Ergebnisse der Strukturuntersuchung an Einkristallen eines η5-CpNi-benzazaphospholids belegt. Letzteres kristallisiert mit Benzol und bildet ein P-Bruckendimer mit planarem Ni2P2 Ring und trans-Konfiguration der beiden senkrecht zum Vierring angeordneten planaren heterocyclischen Phosphidoliganden.

Journal ArticleDOI
01 Jul 2002-Pramana
TL;DR: In this paper, a Bianchi type I inflationary universe in the presence of a massless scalar field with a flat potential was investigated and the inflationary scenario of the model was discussed in detail.
Abstract: In this paper, we have investigated Bianchi type I inflationary universe in the presence of massless scalar field with a flat potential. To get an inflationary solution, we have considered a flat region in which potential V is constant. The inflationary scenario of the model is discussed in detail.

Journal ArticleDOI
TL;DR: In this article, the titanium-coated polymeric membranes are used for gas separation and the binding of metallic clusters on the polymeric material is improved partially by heat treatment, however, good results are obtained by dissolving the coated membranes and recasting them.

Journal ArticleDOI
TL;DR: In this article, a crystal structure analysis of 1b Li ·3THF reveals monomers and coordination of lithium at nitrogen and phosphorus, respectively, and the different effect of 2- t -butyl groups on the steric hindrance at N and P is illustrated by the molecular geometry of 1d determined by crystal geometry analysis.

Journal Article
TL;DR: The results suggest that Mentha pretreatment provides protection against radiation induced alterations in intestinal mucosa of Swiss albino mice.
Abstract: Intestinal protection in mice against radiation injury by M. piperita (1 g/kg body weight/day) was studied from day 1 to day 20 after whole body gamma irradiation (8 Gy). Villus height, goblet cells/villus section, total cells, mitotic cells and dead cells/crypt section in the jejunum are good parameters for the assessment of radiation damage. There was significant decrease in the villus height, number of total cells and mitotic cells/crypt section, whereas goblet cells and dead cells showed significant increase after irradiation. Mentha pretreatment resulted in a significant increase in villus height, total cells and mitotic cells, whereas goblet cells and dead cells showed a significant decrease from respective irradiated controls at each autopsy day. The results suggest that Mentha pretreatment provides protection against radiation induced alterations in intestinal mucosa of Swiss albino mice.

Journal ArticleDOI
TL;DR: In this paper, the relativistic mean field (RMF) is replaced by a set of discrete positive energy states generated by enclosing the nucleus in a box, and the main contribution to the pairing correlations for the neutron-rich nuclei is given by the low-lying resonant states, in addition to the contributions coming from the states close to the Fermi surface.
Abstract: Based on a relativistic mean field (RMF) framework, we analyze the BCS approximation to the relativistic Hartree–Bogoliubov (RHB) approach for the case of nuclei close to the drip line. In the BCS calculations the single particle continuum corresponding to RMF is replaced by a set of discrete positive energy states generated by enclosing the nucleus in a box. It is found that the main contribution to the pairing correlations for the neutron-rich nuclei is given by the low-lying resonant states, in addition to the contributions coming from the states close to the Fermi surface. Towards this end we present the results of our calculations for the entire chain of even–even 48–98Ni isotopes. Results for the neutron-rich nucleus 84Ni is discussed in detail as a prototype. A detailed comparison of our results for the nucleus 84Ni with those obtained in similar studies using RHB, nonrelativistic Hartree–Fock–Bogoliubov (HFB), and a recently proposed resonant continuum HF+BCS method provides strong evidence for the applicability of the RMF+BCS approach for the treatment of neutron-rich nuclei as well. Additional results of extensive calculations for the isotopes of O, Ca, Zr, Sn and Pb nuclei further reinforce our conclusions. From amongst these calculations, the results of the even–even 32–76Ca isotopes with two different RMF force parametrizations, and their agreement with the recent continuum relativistic Hartree–Bogoliubov (CRHB) results are discussed briefly for illustration purposes.

Journal ArticleDOI
TL;DR: In this paper, it was shown that 1,3-Bis(ethoxycarbonyl)-1, 3-azaphospholo[5, 1-a]isoquinoline and -[1, 5-a]-pyridine undergo stereoselective Diels-Alder reactions at the CP- functionality with 2,3dimethylbutadiene and isoprene in the presence of sulfur or methyl iodide.

Journal ArticleDOI
TL;DR: In this article, the authors measured thermal conductivity and thermal diffusivity of Se80Te20-xInx (x = 2, 4, 6 and 10) glasses under a load of 5 tons at room temperature using transient plane source (TPS) technique.
Abstract: Measurements of thermal conductivity and thermal diffusivity of twin pellets of Se80Te20-xInx (x = 2, 4, 6 and 10) glasses, prepared under a load of 5 tons were carried out at room temperature using transient plane source (TPS) technique. The measured values of both thermal conductivity and diffusivity were used to determine the specific heat per unit volume of the said materials in the composition range of investigation. Results indicated that both the values of thermal conductivity and thermal diffusivity increased with the addition of indium at the cost of tellurium whereas the specific heat remained almost constant. This compositional dependence behaviour of the thermal conductivity and diffusivity has been explained in terms of the iono-covalent type of bond which In makes with Se as it is incorporated in the Se-Te glass.