Showing papers by "Banaras Hindu University published in 1976"
TL;DR: The results indicate that swertiamarin and mangiferin antagonize each other in vivo and thereby reverse their CNS effects.
72 citations
TL;DR: Binding of (3H)-atropine to synaptosomal fractions prepared from cerebral and cerebellar cortices of young, adult and old male and female rats were studied and acetylcholinesterase activity of the same fractions showed corresponding changes with age.
64 citations
60 citations
46 citations
TL;DR: In this article, the thickness dependence of the dielectric constant of Er 2 O 3 films was studied and it was found that for films less than 700 A and greater than 1300 A, the Dielectric Constant e shows the usual behaviour of increasing with increasing thickness and then assuming the limiting bulk value.
42 citations
TL;DR: There does not appear to be a linkage between N 2 fixation and heterocyst or spore differentiation: they seem to be independent processes probably regulated either by different genes or by a single regulatory gene with independent operons.
Abstract: Mutagenesis in the blue-green alga, Anabaena doliolum Bharadwaja has been investigated with particular reference to N2 fixation. Several types of mutant have been isolated after induction with UV, NG, acridine orange and acriflavine. From a comparative characterization it is concluded that the heterocyst is not the sole site of N2 fixation. There does not appear to be a linkage between N2 fixation and heterocyst or spore differentiation: they seem to be independent processes probably regulated either by different genes or by a single regulatory gene with independent operons. A common genetic determinant has also been suggested for nitrogenase and nitrate and nitrite reductases.
20 citations
TL;DR: It is concluded that acid DNase shows a positive correlation to the early embryonic DNA synthesis but not to the cell increase occurring in old age.
Abstract: The levels of DNA, RNA, protein and acid and alkaline DNase were studied in developing and old chick cerebellum. The in vitro synthesis of DNA, by both chick cerebrum and cerebellum was also studied, by following the incorporation of [3H]thymidine into DNA. It was observed that the increase in DNA content of chick cerebellum continued well beyond adult stages of life span. Maximal DNA synthesis, as judged by the [3H]thymidine incorporation, was noticed during the early embryonic development but decreased with advancement of age. There was, however, another peak of activity, although smaller, at about 9 months of age. Both cerebrum and cerebellum showed similar patterns. The highest specific activity of acid DNase was also found during the early period of cerebellar development, that is at a time when rapid cellular proliferation was occurring. The activity steadily declined with the aging and in 2-year-old cerebellum very little activity could be detected. Alkaline DNase, on the other hand, not only exhibited high activity during the early development but also remained at a significant level even in old cerebellum. It is concluded that acid DNase shows a positive correlation to the early embryonic DNA synthesis but not to the cell increase occurring in old age.
20 citations
18 citations
01 Jun 1976
TL;DR: A histomorphologic basis for the erection of the spines and various structural modifications in the skin facilitating its enormous stretching under inflated conditions of the fish are discussed.
Abstract: The present study concerns the functional organization of the skin ofTetraodon fluviatilis. The epidermis consists of five different types of cells — the flask-shaped mucous cells, the eosinophilic granular cells, the sacciform granulated cells, the vesicle containing granulated cells, and the polygonal cells. A thin noncellular layer, the cuticle found on the surface of the skin, is probably secreted from the polygonal cells in the outermost layer of the epidermis. A,well-defined lymphatic plexus exists between the cells of the basal layer.
17 citations
17 citations
TL;DR: The significance of the cooccurrence of loliolide with a number of carotenoids in C. decussata and the facile transformation of violaxanthin into loliolides and violoxin are discussed in the light of the biogenesis of the degraded carotENoid.
TL;DR: Aerial parts of Canscora decussata have been shown to contain 1-methoxy-3,5-dihydroxyxanthone and its 3-O-rutinosyl derivative as mentioned in this paper.
TL;DR: In this article, the authors applied the faulted-matrix model to the discovery of the most probable series of structures that can result from faulted 15R and 4H matrices in SiC.
TL;DR: In this article, the standard free energy of BaO·ZrO2 prepared by solid state reaction at elevated temperatures was determined in the temperature range 937 K to 1150 K using barium fluoride as solid electrolyte and barium hexa ferrite as the reference electrode.
TL;DR: This study is the first demonstration of vivotoxicity of diacetoxyscirpenol, which has been detected in diseased safflower plants after inoculating with the wilt pathogen.
Abstract: Fusarium oxysporum f. sp.carthami, a causative agent for the wilt disease of safflower (Carthamus tinctorius Linn.), has been shown to produce diacetoxyscirpenol, T-2 toxin, fusaric acid and lycomarasmin in artificial media. These substances produced disease syndromes, similar to those seen after the natural infection, when administered in healthy plants. Diacetoxyscirpenol and T-2 toxin have been detected in diseased safflower plants after inoculating with the wilt pathogen. This study is the first demonstration of vivotoxicity of diacetoxyscirpenol.
TL;DR: The distribution of protein and carbohydrate constituents in the epidermis of Barbus sophor is described in order to give a better understanding of its cellular organization and physiology.
Abstract: The distribution of protein and carbohydrate constituents in the epidermis of Barbus sophor is described in order to give a better understanding of its cellular organization and physiology.
Various cytochemical techniques show the keratinized nature of the outer free margins of the polygonal cells in the most-superficial layer. These contain appreciable amounts of cysteine bound sulphydryl groups, basic proteins, protein bound NH2 groups, ribonucleic acid and calcium and give a strong Papanicolaou's reaction. Absence of cystine bound disulphide groups suggests that the cornified layer in B. sophor is probably mechanically weak as adjacent keratin chains remain unbonded. The polygonal cells showing keratinization at the outer free margins remain metabolically active and are not sloughed off at the surface. This is in contrast to the keratinized epidermis of other teleosts so far reported in which the keratinized cells are dead and are sloughed off at the surface.
In addition to keratinization the polygonal cells undergo mucogenesis synthesizing sulphated acid mucopolysaccharides.
The presence of eosinophilic granular cells in the epidermis is interesting. The possible role of these cells in the protection of the epidermis has been discussed. The epidermis on the inner surface of the scale is very thin so it may not have much protective significance in these areas.
TL;DR: In this article, the effects of damping on the motion of the variable inertia system has been carried out and computer methods making use of a numerical analysis process, namely the modified Euler's equations, have been applied in the investigations.
TL;DR: In this article, an effective relaxation time is deduced from the variation of the Hall coefficient with the concentration which is found to be proportional to the mean free path of the electrons.
Abstract: Measurements on Hall constant and magnetoresistance of thin films (350 A-800 A) of Ag-Au alloys with concentrations up to 20% gold have been made. An effective relaxation time is deduced from the variation of the Hall coefficient with the concentration which is found to be proportional to the mean free path of the electrons. The mean free path of the film decreases by about a factor of 3 from the bulk value for silver on the addition of gold to silver. The results are consistent with those of other workers who have used different methods and also indicate that the relaxation time is anisotropic in thin films of alloy. Size effects have also been discussed.
TL;DR: In this paper, the 1:2 zinc(II) cyanide-morpholine complex and a four-coordinated, monomeric pseudotetrahedral structure with bidentate bridged morpholine are considered.
Abstract: Coordination compounds formed by zinc(II) and cadmium(II) cyanides with morpholine have been prepared and characterized by infrared spectral measurements down to 200 cm−1 in the solid state. Possible structures for the compounds isolated in the solid state are discussed. Morpholine is shown to act as a terminal N-bonded ligand in the 1:2 zinc(II) cyanide-morpholine complex and a four-coordinated, monomeric pseudotetrahedral structure is suggested for the complex. The 1:1 zinc(II) and cadmium(II) cyanide-morpholine complexes are considered to have four-coordinated polymeric chain structures with bidentate bridged morpholine. The trans or chair configuration of the uncoordinated morpholine is retained in all the complexes.
01 Mar 1976
TL;DR: The generalised Stieltjes transform of a function f(t) ∈ L(0, ∞) is defined by the integral converges for complex s in the region Ω, where Ω is the s-plane cut from the origin along the negative real axis as mentioned in this paper.
Abstract: The generalised Stieltjes transform of a function f(t) ∈ L(0, ∞) is defined byThe integral converges for complex s in the region Ω, where Ω is the s-plane cut from the origin along the negative real axis.
TL;DR: Thyroidectomy in Natrix piscator at 30° produced a significant decrease in the total number of red blood cells, hemoglobin concentration, and hematocrit and an increase in white blood cells and the number ofwhite blood cells increased significantly in intact snakes.
TL;DR: In this paper, a new polymorphic phase, characterised by a face-centered cubic structure, with lattice parameter 5.83 ± 0.02 A, has been identified in thin films of yttrium.
Abstract: A new polymorphic phase, characterised by a face-centered cubic structure, with lattice parameter 5.83 ± 0.02 A , has been identified in thin films of yttrium. Electron diffraction evidence and electrical resistivity measurements have been carried out in order to detect the new f.c.c. phase.
TL;DR: Foliar application of boric acid, at varying concentrations, to mango cultivar "Langra" significantly influenced the growth, flowering, fruiting and fruit quality in this paper.
TL;DR: Mutagenesis in cyanophage LPP-1 was investigated with physical and chemical mutagens, and mutants induced by ultraviolet irradiation in free phages were photoreactivable by visible light.
Abstract: Mutagenesis in cyanophage LPP-1 was investigated with physical and chemical mutagens Rapid lysis (r), host range (h) and temperature sensitivity (ts) were studied Mutations induced by ultraviolet irradiation in free phages were photoreactivable by visible light The h and ts markers were efficiently induced by ultraviolet, N-methyl-N′-nitro-N-nitrosoguanidine, 2-aminogpurine and acriflavine under intracellular conditions, and r mutants by ultraviolet and photodynamic action of acriflavine The conditions required for induction are described
TL;DR: Coordination compounds formed by cadmium (II) nitrate with pyridine Noxide, 2-methyl-, 3-methyl, 4-methyl and 2,6-dimethyl-pyridine noxides have been prepared and characterized by molecular weights and ir spectral measurements down to 200 cm −1 in the solid state as discussed by the authors.
01 Sep 1976-Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science
TL;DR: The free energy of formation (AG°) of various ferrites in the system BaO-Fe2O3 was determined with galvanic cells using barium fluoride as solid electrolyte.
Abstract: The free energy of formation (AG°) of various ferrites in the system BaO-Fe2O3 was determined with galvanic cells using barium fluoride as solid electrolyte. The values of ΔG° per mole of 2 BaO · Fe2O3, BaO · Fe2O3 and BaO · 6 Fe2O3 from BaO and Fe2O3 were found to be-10,953 (±2275) J, -68,496 (±435) J, -75,576 (±250) J at 1200 K and-104,600 (±2275) J, -66,875 (±435) J, -74,437 (±250) J at 1300 K respectively.
TL;DR: It was observed that the greater the duration of the dark period the better the gonadal response is, and sensitivity to short photoperiods/long dark periods seems to be characteristic of the low‐latitude birds.
Abstract: The testicular cycle of subtropical Spotted Munia was studied over a period of 11 months in the following schedules: L/D: 0.25/23.75; L/D: 1/23; L/D: 3/21; L/D: 5/19; L/D: 8/16 and near‐complete darkness. All schedules completely abolished annual gonadal regression with the exception of L/D: 8/16 and near‐complete darkness. In the former, gonads regressed but entered the next reproductive cycle 4 months earlier than the normal scheduled time. In the latter also the cycle was completed though it was sharp and short. It was observed that the greater the duration of the dark period the better the gonadal response is. Sensitivity to short photoperiods/long dark periods seems to be characteristic of the low‐latitude birds; what relevance it has to the normal reproductive cycle of munias in nature is not known.