University of Rajasthan

About: University of Rajasthan is a education organization based out in Jaipur, India. It is known for research contribution in the topics: Chemical shift & Derivative (chemistry). The organization has 15058 authors who have published 15733 publications receiving 117400 citations. The organization is also known as: Rajasthan University.

Histological and biochemical changes in testis of zinc deficient BALB/c strain of mice.

Abstract: Zinc, protein, cholesterol, phospholipids, alkaline phosphatase (AlPase), acid phosphatase (AcPase), adenosine-5-triphosphatase(ATPase) and histology were studied in testis of zinc-deficient mice. Zinc and protein decreased in the 3-week experiment whereas they increased in the 6-week experiment. Zinc is involved in several functions of the cell and is regulated by hormones. Inhibition of spermatogenesis indicates for decreased zinc levels in 3-week whereas the increase in 6-week experiment indicates for accumulation of zinc in oedomatous fluid and uncontrolled diffusion of zinc across the blood testis barrier. Glycogen decreased in the 3-week as well as 6-week experiments due to blockage of androgen and spermatogenesis. Cholesterol and phospholipids increased in the 3-week experiment and decreased in 6-week experiment as both the parameters are related to steroidogenesis. Zinc deficiency leads to aspermatogenic condition and comparatively less injury to non-germinal cells. This could have blocked the transport of material across the testis barrier and therefore might have increased AlPase levels. Increased AcPase, probably represents lysosomal enzymes, as the cell debris of disorganised epithelium are to be digested and removed. ATPase increased in 3-week experiment and can be correlated to increased demands of energy of testicular cells to overcome the insults of zinc deficiency whereas the decrease in 6-week experiment could be as a result of inhibition of spermatogenesis.

Spectroscopic studies, molecular structure optimization and investigation of structural and electrical properties of novel and biodegradable Chitosan-GO polymer nanocomposites

Abstract: This article covers the molecular structure optimization and spectroscopic studies, such as Raman, UV–Vis absorption and FTIR, carried out for novel, biodegradable and biocompatible chitosan-graphene oxide (CS-GO) polymer nanocomposites (PNCs), which were synthesized by using simple blending technique followed by ultrasonification treatment. In addition, the structural and electrical properties have also been investigated. Under molecular structure optimization, the structural geometry, electronic structure (HOMO and LUMO) and potential distribution have been computed. X-ray diffraction of PNCs reveals that the crystallized phase of GO dominates over the CS giving modification in crystallite size and presence of micro-strain. FTIR and Raman spectroscopic studies have been carried out to confirm the proper formation of PNCs and presence of functional group in the composites. The surface morphology has been studied with the help of FESEM to confirm proper dispersion of GO sheets. Optical absorption edge and band gap analyzed from UV–Vis analysis reveal the semiconducting nature of PNCs. In addition, the optical band gap is tuned by varying the content of GO in PNCs. This tuning in band gap has also been supported by XRD and computational results. The dielectric constant and dc conductivity are found increased with increasing content of GO in PNCs. Additionally, the I–V characteristics of PNCs shows Ohmic type conduction with rising in current due to incorporation of GO. In view of the results achieved, the usage of CS-GO PNC is suitable for future development of optical and Gas sensors and UV-detectors, and therefore, such composite may be proven as a potential and suitable candidate for the optoelectronic or electrical devices operating at high frequencies.

An efficient computational method for local fractional transport equation occurring in fractal porous media

Abstract: The present article deals with the local fractional linear transport equations (LFLTE) in fractal porous media. LFLTE play a key role in different scientific problems such as aeronomy, superconductor, semiconductors, turbulence, gas mixture, plasma and biology. A numerical scheme namely q-local fractional homotopy analysis transform method (q-LFHATM) is applied to get the solution of LFLTE. The results obtained by using of q-LFHATM show that the proposed scheme is very suitable and easy to perform with high accuracy.

Novel Low Band Gap Small Molecule and Phenylenevinylene Copolymer with Cyanovinylene 4-Nitrophenyl Segments: Synthesis and Application for Efficient Bulk Heterojunction Solar Cells

Abstract: A novel star-shaped small monomer SM containing a 1,3,5-triazine core and arms with terminal cyanovinylene 4-nitrophenyls was synthesized. Moreover, an alternating p-phenylenevinylene copolymer P containing thiophene with cyanovinylene 4-nitrophenyl side segments was synthesized by Heck coupling. Both SM and P showed broad absorption spectra with long-wavelength maximum at 630−648 nm, which for P is attributable to an intramolecular charge transfer. The optical band gap was 1.57 eV for SM and 1.70 eV for P. Both SM and P were blended with PCBM to study the donor−acceptor interactions on the blend film morphology and device characteristics of organic bulk heterojunction solar cells. A combination of characterization techniques including X-ray diffraction and optical topographical images were used to investigate the film morphology. The HOMO and LUMO levels of both SM and P are well-aligned with those of the PCBM acceptor, allowing efficient electron transfer and suitable open circuit voltage, leading to ov...