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131.
132.
Sudhir Malik 《Zeitschrift fur Physik C Particles and Fields》1996,70(4):621-624
Experimental results on multiplicity distributions in different pseudorapidity intervals of charged shower particles produced in proton-AgBr and proton-CNO collisions at 800 GeV are presented. The different distributions are described well by the negative binomial form. We successfully interpret our results in terms of the clan model. The values of the rapidity gap probability in terms of average number of clans in different pseudorapidity intervals are also determined. 相似文献
133.
The fabrication and characterization of conducting polymer thin film optical and electrical waveguides prepared by vacuum deposited method is reported. The waveguiding parameters (refractive index, propagation loss, V-I and C-V characteristics) have been measured. 相似文献
134.
Farah Benyettou Nawel Kaddour Thirumurugan Prakasam Gobinda Das Sudhir Kumar Sharma Sneha Ann Thomas Fadia Bekhti-Sari Jamie Whelan Mohammed A. Alkhalifah Mostafa Khair Hassan Traboulsi Renu Pasricha Ramesh Jagannathan Nassima Mokhtari-Soulimane Felipe Gndara Ali Trabolsi 《Chemical science》2021,12(17):6037
With diabetes being the 7th leading cause of death worldwide, overcoming issues limiting the oral administration of insulin is of global significance. The development of imine-linked-covalent organic framework (nCOF) nanoparticles for oral insulin delivery to overcome these delivery barriers is herein reported. A gastro-resistant nCOF was prepared from layered nanosheets with insulin loaded between the nanosheet layers. The insulin-loaded nCOF exhibited insulin protection in digestive fluids in vitro as well as glucose-responsive release, and this hyperglycemia-induced release was confirmed in vivo in diabetic rats without noticeable toxic effects. This is strong evidence that nCOF-based oral insulin delivery systems could replace traditional subcutaneous injections easing insulin therapy.We report the successful use of a gastro-resistant covalent organic framework for in vivo oral delivery of insulin. 相似文献
135.
Sudhir Kashyap 《Tetrahedron letters》2007,48(51):8960-8962
C-2 Methylene glycosides were synthesized from C-2 propargyloxymethyl glycals in a stereoselective manner using a catalytic quantity of AuCl3. The Au-catalyzed reaction was explored using various aglycones. The current protocol enables the preparation of C-2 methylene glycosides, tolerates diverse functional groups and is fast, catalytic and mild. 相似文献
136.
New binuclear complexes with [Cu(PPh3)3]+ and [Cu(PPh3)(N—N)]+ (N—N – 2,2-bipyridine, 1,10-phenanthroline) moieties connected via the isocyanide group to [Ru(bpy)2(py)]+ and [Ru(phen)2(py)]+ have been prepared and isolated as PF6
– salts. In addition, new trinuclear complexes, [{(PPh3)3Cu(-NC)}2Ru(bpy)2](PF6)2 and [{(N—N)-(PPh3)Cu(-NC)}2Ru(bpy)2](PF6)2, have been synthesized using [Ru(bpy)2(CN)2]. The complexes have been characterized by elemental analyses, i.r., n.m.r., u.v.–vis., FAB mass spectra and by conductivity measurements. The i.r. spectra reveal an increase in v;(CN) in the isocyano-bridged complexes compared to the mononuclear parent complexes. The complexes are luminescent with emission wavelengths in the 458–550 and 600–636 nm ranges. The half wave reduction potentials in MeCN are always more positive than those of the parent complexes. It is observed that the isocyano-bridged complexes are more powerful excited state reductants than the cyano-bridged, Cu(I)(-CN)Ru(II) complexes. 相似文献
137.
S. M. T. Shaikh D. H. Manjunatha K. Harikrishna K. C. Ramesh R. Sudhir Kumar J. Seetharamappa 《Journal of Analytical Chemistry》2008,63(7):637-642
A simple and sensitive spectrophotometric method for the determination of four catecholamines viz., adrenaline bitartarate
(ABT), methyldopa (MDP), dopamine hydrochloride (DPH), and levodopa (LDP), in both pure form and in pharmaceutical formulations
is described. The method is based on the reaction of diazotized sulphanillic acid (DSA) with catecholamines in a basic medium
to yield orange-red colored products having absorption maxima at 507 nm for MDP and at 475 nm for others analytes. The colored
species obeyed Beer’s law in the range of 1–27, 0.5–17, 0.6–15, and 1.5–19.2 μg/mL for ABT, MDP, DPH, and LDP, respectively.
The molar absorptivity values as obtained from Beer’s law data were found to be 0.812 × 104, 0.947 × 104, 0.927 × 104, and 0.709 × 104 L/(mol cm), while Sandell’s sensitivity values were observed to be 412.03, 25.15, 20.44, and 27.81 ng/cm2 for ABT, MDP, DPH, and LDP, respectively. Common excipients did not interfere with the proposed method. The results of the
proposed methods compare favorably with those of official methods. The proposed method offers a simplicity, reliability, rapidity,
and accuracy compared to the existing methods.
The text was submitted by the author in English. 相似文献
138.
Pallavi Sudhir Abhimanyu 《Advances in Applied Clifford Algebras》2013,23(4):787-792
In this paper, we present a function called the Determinant-Like Function that generalises the determinant function to m by n matrices using the Clifford algebra C?(V, 0). By definition, this generalisation satisfies the property that the exterior product of its column vectors has a magnitude that equals its determinant-like function if it has more rows than columns. For matrices which have more columns than rows, we make use of another property that the exterior product of its rows has a magnitude that equals the absolute value of its determinant-like function if it has more columns than rows. Defining the sign of this determinant-like function remains an open question. 相似文献
139.
Abhimanyu Pallavi Sudhir 《Advances in Applied Clifford Algebras》2014,24(3):805-807
A generalisation of the determinant to rectangular matrices, known as the determinant-like function, has its magnitude defined previously. In this paper, we show that the determinant-like function is a rotation of the vector determinant.We further propose that this rotation is an identity transformation and thus the determinant-like function is in fact the same as the vector determinant. From this, we derive some properties of the determinant-like function. 相似文献
140.
Sudhir Kumar Keshri Sharvan Kumar Kalyanashis Mandal Prof. Dr. Pritam Mukhopadhyay 《Chemistry (Weinheim an der Bergstrasse, Germany)》2017,23(49):11802-11809
Electron-rich π-conjugated dianions are known to be ambient unstable and their stabilization in ambient water is yet to be realized. We report the first example of an exceptionally stable naphthalenediimide-based dianion in ambient and hot water, forming one of the most stable redox-active dianion. The half-life (t1/2) of dianion ( 1 a2− ) is more than four months in ambient water. The dianionic state was confirmed by X-ray crystallography and by various spectroscopic methods. The noncovalent electronic conduits introduced for the first time in dianions, embrace nO→π*C≡N interactions and aid in delocalizing the dianionic charge as validated from theoretical studies. The dianions harness strong NIR absorption and electron donor ability to organic acceptors and metal ions, which make them suitable for potential green energy applications. 相似文献