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91.
Dilip K. Sinha 《Zeitschrift für Angewandte Mathematik und Physik (ZAMP)》1965,16(3):411-418
Zusammenfassung Die Gleichungen für die quasi-eindimensionale Strömung einer idealen, reibungslosen, kompressiblen und elektrisch vollkommen leitenden Flüssigkeit unter Wärmezufuhr und unter dem Einfluss eines willkürlichen Magnetfeldes werden in charakteristischer Form dargestellt.Wird die Untersuchung beschränkt auf kleine Störungen in einer ursprünglich parallelen, isentropen Strömung konstanten Querschnittes, so können die Grundgleichungen linearisiert werden. Hierzu wurden allgemeine Lösungen entwickelt.Die Lösungen für die entsprechenden Probleme aus der konventionellen Gasdynamik und für die Strömung unter dem Einfluss eines quergerichteten Magnetfeldes sind als Spezialfälle mitenthalten. 相似文献
92.
Dilip K. Sinha 《Zeitschrift für Angewandte Mathematik und Physik (ZAMP)》1969,20(4):553-556
Summary In the present note, the equations of electricity and the equations of motion have been used to investigate the disturbances in a piezoelectric slab excited by a step electric field. The application of the Laplace transform facilitates the solution of the problem. 相似文献
93.
Two possible methods to determine the spatial average temporal average intensity I(sata) and ultrasonic power W in composite ltrasonic transducers for medical application are described. Results showed that integrals using one method will yield accurate results but a vast amount of computational effort is required. On the other hand, using an alternative method these integrals may readily be solved at the expense of the accuracy of the results deduced. 相似文献
94.
Debajyoti Choudhury Rahul Sinha S Arunagiri Gautam Bhattacharyya Debrupa Chakraverty Debajyoti Choudhury Amitava Datta Anindya Datta Aseskrishna Datta Amol Dighe Dilip Kumar Ghosh Anjan Giri Stephen King Anirban Kundu Rukmani Mohanta Biswarup Mukhopadhyaya Sreerup Raychaudhuri Saurabh Rindani Probir Roy DP Roy Sourov Roy AI Sanda Nita Sinha Rahul Sinha K Sridhar H Yamamoto 《Pramana》2000,55(1-2):335-345
This report summarises the work done during WHEPP-6 (Institute of Mathematical Sciences, Chennai, India, Jan 3–15, 2000) in
Working group on ‘B and collider physics’. 相似文献
95.
Dilip Raghavan 《Israel Journal of Mathematics》2012,189(1):39-53
We answer a question of Shelah and Steprāns [6] by producing a model of ZFC where there are no strongly separable almost disjoint families. The notion of a strongly separable almost disjoint family is a natural variation on the well known notion of a completely separable almost disjoint family, and is closely related to the metrization problem for countable Fréchet groups. 相似文献
96.
97.
Dilip Pinjari Ajyal Z. Alsaleh Dr. Yuvraj Patil Prof. Dr. Rajneesh Misra Prof. Dr. Francis D'Souza 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2020,132(52):23905-23913
Push–pull systems comprising of triphenylamine–tetracyanobutadiene (TPA-TCBD), a high-energy charge-transfer species, are linked to a near-IR sensitizer, azaBODIPY, for promoting excited-state CS. These systems revealed panchromatic absorption owing to intramolecular CT and near-IR absorbing azaBODIPY. Using electrochemical and computational studies, energy levels were established to visualize excited state events. Fs-TA studies were performed to monitor excited state CT events. From target analysis, the effect of solvent polarity, number of linked CT entities, and excitation wavelength dependence in governing the lifetime of CS states was established. Electron exchange between two TPA-TCBD entities in 3 seem to prolong lifetime of the CS state. We have been successful in demonstrating efficient CS upon both high-energy CT and low-energy near-IR excitations, signifying importance of these push–pull systems for optoelectronic applications operating in the wide optical window. 相似文献
98.
In their work on spreading models in Banach spaces, Dilworth et al. (Isr J Math 161:387–411, 2007) introduced the notion of a Suslin lower semi-lattice, a seemingly slight weakening of the notion of a Suslin tree. They posed several problems of a set theoretic nature regarding their notion. In this paper, we make a systematic study of the notion of Suslin lower semi-lattice, answering some of the questions raised by Dilworth, Odell, and Sari. 相似文献
99.
Ryoko Yasumura Kumar Dilip Ashtekar Akio Tonouchi Tatsuo Nehira Babak Borhan Masaru Hashimoto 《Tetrahedron》2013
Novel 7-β- and 10-β-hydroxylated congeners of CAF-603 (4 and 5, respectively) were isolated from Trichoderma crassum. Relative configuration of 4 was determined by NOE experiments. Stereochemistry of 7-β-hydroxy group in 5 was established by a combination of vicinal 3JH–H analyses and quantum chemical calculations. Absolute configurations of 4 and 5 were established by observing the Cotton effects of their bis(2-naphthoate) esters. T. crassum also produce known CAF-603 (1), 14-hydroxy and 8,9-β-epoxy derivatives (2 and 3, respectively). Present study first established the absolute configuration of CAF-603 family by taking their biosyntheses into account. Preliminary biological experiments revealed that the molecular target strictly recognizes the β-side of the cycloheptane ring. 相似文献
100.
Santosh Kumar Joonseok Koh Dilip Kumar Tiwari Pradip Kumar Dutta 《高分子科学杂志,A辑:纯化学与应用化学》2013,50(10):789-795
Chitosan ofloxacin complex was prepared in isopropyl alcohol under mild conditions. The ionic complexation between chitosan and ofloxacin was confirmed by Fourier transform infrared (FTIR), and nuclear magnetic resonance (NMR) spectroscopy. The crystallinity, thermal, surface morphology and optical properties were evaluated by X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis) spectroscopy, photoluminescence (PL) spectroscopy and second harmonic generation (SHG) studies, respectively. Absorption of the complex was high (106cm?1) with an optical band gap of 3.80 eV. The chitosan-ofloxacin complex may be considered as a novel optical material from biomedical application point of views. It may find applications as biosensors and environmentally sensitive membranes and artificial membranes. 相似文献