Deen Dayal Upadhyay Gorakhpur University

About: Deen Dayal Upadhyay Gorakhpur University is a education organization based out in Gorakhpur, Uttar Pradesh, India. It is known for research contribution in the topics: Thermal decomposition & Lymnaea acuminata. The organization has 1032 authors who have published 1591 publications receiving 21734 citations. The organization is also known as: Gorakhpur University.

Fungitoxic Properties of Iberis amara

Abstract: On assaying different parts of Iberis amara L (Cruciferae) for their fungitoxicity against Hel-minthosporium oryzae, flowers and seeds were found to possess strong toxicity Seed extract was found to be fungicidal at the minimum inhibitory concentration (2%), remained active up to 35 days, and exhibited a broad range of activity and non-phytotoxicity The fungitoxicity of the seeds was thermostable up to 120°C, remained active up to 9 months at room temperature but declined on autoclaving

C60 as Electron Acceptor and Donor: A Comparative DFT Study of Li@C60 and F@C60

Abstract: Fullerene (C60) is a stable prototype system for a special class of nanomaterials. In this work, the smallest alkali metal (Li) and halogen (F) atoms were encapsulated in the C60 cage, and comparative quantum chemical calculations (QCCs) were performed on their various properties using a density functional theory approach. It was noted that the off-centre distance of Li is higher than that of F. The QCCs of the charge transfer to and from C60 were also analysed. Although charge transfer to and from the C60 cage takes place in both cases, Li@C60 becomes more polar than F@C60, suggesting a better electron-accepting nature of C60 than electron-donating behaviour. This fact is consistent with the natural bond orbital (NBO) charge on the trapped atoms and the dipole moment as well as the binding energy values of the encapsulated C60. Although the encapsulation of both atoms reduces the frontier orbital energy gap, the frontier orbital gap of Li@C60 is smaller than that of F@C60. More interestingly, the depression in the polarizability of Li@C60 is significantly large relative to that of F@C60. These findings also support the tendency of C60 to act as electron acceptor. This study provides some insights into the fundamental properties of C60 and should be helpful in designing new endofullerene complexes for a variety of applications.

Ultimobranchial and parathyroid glands of the pigeon Columba livia in response to 1,25OH2D3 administration.

Abstract: Columba livia were given daily intraperitoneal injections of 100 pmol of 1,25(OH)(2)D(3)/100 g body wt. for 15 days. Ultimobranchial and parathyroid glands were fixed on 1st, 3rd, 5th, 10th and 15th day of the experiment. Following 1,25(OH)(2)D(3) treatment, the plasma calcium levels of pigeon remain unchanged on day 1. The levels increase significantly after day 3 which progresses up to day 10. The plasma calcium level becomes normal at day 15. The plasma inorganic phosphate levels of Columba livia injected with 1,25(OH)(2)D(3) remain unaffected up to day 3. The levels exhibit a progressive increase from day 5 to day 10. The levels become normophosphatemic at day 15. Up to day 3 following 1,25(OH)(2)D(3) treatment, there is no change in the ultimobranchial gland of Columba livia. The gland exhibits an increased activity after 5 days 1,25(OH)(2)D(3) treatment which is evident by the increased nuclear volume and weak staining response of the cytoplasm of ultimobranchial cells. After day 10, the nuclear volume depicts a further increase and a few completely exhausted cells are discerned. Following 15-day 1,25(OH)(2)D(3) treatment the nuclear volume records an increase and degenerating cells have been observed at certain places. The parathyroid glands of 1,25(OH)(2)D(3)-treated Columba livia remain unaffected up to day 5. After day 10 and day 15, there is a progressive decrease in the nuclear volume of parathyroidal cells and reduced chromaticity of nuclei has been noticed. Moreover, after 15 days few degenerating cells are observed.

Synthesis and Characterization of Samarium (III) Tris(O,O′ -Dialkyl and Alkylene Dithiophosphates) and Their Adducts with Nitrogen and Phosphorus Donor Bases

Abstract: Samarium (III) tris(dithiophosphates, [SmS2P(OR)2 3.3H2O] (where R = ─CH2CH2CH3 or ─C6H5) and [SmS2PO2G3.3H2O] [where G = ─C(CH3)2CH2CH(CH3)─, ─CH2C(CH3)2CH2-, ─C(CH3)2C(CH3)2-, ─CH2CH2CH(CH3), ─CH2C(C2H5)2CH2-, and ─CH(CH3)CH(CH3)-], were prepared by a reaction of SmCl3.6H2O and ammonium dithiophosphates in distilled water. Adducts of the type [SmS2P(OR)2 3.nL] and [SmS2PO2G3.nL] [where n = 1, L = N2C10H8 and n = 2, L = P(C6H5)3] were prepared by a reaction of samarium (III) tris(dithiophosphates) and nitrogen or phosphorus donor bases in benzene. These newly synthesized compounds have been characterized by elemental analysis, molecular weights measurement, thermogravimetric analysis, UV-visible, IR, and 1H and 31P NMR spectral studies. Coordination numbers of eight and nine are suggested for samarium (III) in these derivatives.