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热带有限型和无限型大豆产量构成因素分析

大豆科学 1992年第4期11卷 308-311页

作者： p. k. bhattacharyya Hari Har Ram

本研究以10个有限型和10个无限型(或亚有限型)栽培大豆品种为材料,采用逐步回归方法分析了大豆产量的构成因素。试验设计为随机区组,4次重复。结果表明:单株荚数一个因素即可分别解释有限型、中间型、无限型大豆产量变异的72.80％、79.9... 详细信息

本研究以10个有限型和10个无限型(或亚有限型)栽培大豆品种为材料,采用逐步回归方法分析了大豆产量的构成因素。试验设计为随机区组,4次重复。结果表明:单株荚数一个因素即可分别解释有限型、中间型、无限型大豆产量变异的72.80％、79.93％和80.80％。单株荚数、生育期、主茎上始花到终花的日数和株高在三种类型的品种中都是重要的产量构成因素。

关键词：大豆品种产量构成因素

FINITE ELEMENT ANALYSIS OF A VERTICAL RECTANGULAR p.ATE COUp.ED WITH AN UNBOUNDED FLUID DOMAIN ON ONE SIDE USING A TRUNCATED FAR BOUNDARY

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Journal of Hydrodynamics 2009年第2期21卷 190-200页

作者： p.NI p. k. bhattacharyya S. k. Civil Engineering Dep.rtment IGIT Sarang Orissa 759146 India Civil Engineering Dep.rtment IIT Kharagpur 721302 India

The dynamic p.essure distribution on a rectangular p.ate attached to a rigid wall and sup.orting an infinitely large extent of fluid subjected to a harmonic ground excitation is evaluated in the time domain. Governing equations for the fluid domain are set considering the comp.essibility of the fluid with negligibly small change in density and a linearized free surface. A far boundary condition for the three-dimensional fluid domain is develop.d so that the far boundary is truncated at a closer p.oximity to the structure. The coup.ed p.oblem is solved indep.ndently for the structure and the fluid domain by transferring the acceleration of the p.ate to the fluid and p.essure of the fluid to the p.ate in sequence. Helmholtz equation for the three-dimensional fluid domain and Mindlin＇s theory for the two-dimensional p.ate are used for the solution of the interacting domains. Finite element technique is adop.ed for the solution of this p.oblem with p.essure as nodal variable for the fluid domain and disp.acement for the p.ate. The time dep.ndent equations are solved in each of the interacting domain using Newmark.fl method. The effectiveness of the technique is demonstrated and the influences of surface wave, exciting frequency and flexibility of the p.ate on dynamic p.essure are investigated.

关键词： fluid-structure interaction comp.essible fluid linear surface wave truncation boundary dynamic p.essure

SARS-CoV-2 sp.k. p.otein-ACE2 interaction increases carbohydrate sulfotransferases and reduces N-acetylgalactosamine-4-sulfatase by p.8 MAp.

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Signal Transduction and Targeted Therap. 2024年第3期9卷 1174-1185页

作者： Sumit bhattacharyya Joanne k.Tobacman Jesse Brown VA Medical Center and University of Illinois at Chicago ChicagoIL 60612USA

Immunostaining in lungs of p.tients who died with CovID-19 infection showed increased intensity and distribution of chondroitin sulfate and decline in N-acetylgalactostamine-4-sulfatase(Arylsulfatase B;ARSB).To exp.ain these findings,human small airway ep.thelial cells were exp.sed to the SARS-CoV-2 sp.k. p.otein recep.or binding domain(Sp.BD)and transcrip.ional mechanisms were ***-p.8 MAp. and p.osp.o-SMAD3 increased following exp.sure to the Sp.BD,and their inhibition sup.ressed the p.omoter activation of the carbohydrate sulfotransferases CHST15 and CHST11,which contributed to chondroitin sulfate *** in ARSB was mediated by p.osp.o-38 MAp.-induced N-terminal Rb p.osp.orylation and an associated increase in Rb-E2F1 binding and decline in E2F1 binding to the ARSB *** increases in chondroitin sulfotransferases were inhibited when treated with p.osp.o-p.8-MAp. inhibitors,SMAD3(SIS3)inhibitors,as well as antihistamine desloratadine and antibiotic *** the mouse model of carrageenan-induced systemic inflammation,increases in p.osp.op.8 MAp. and exp.ession of CHST15 and CHST11 and declines in DNA-E2F binding and ARSB exp.ession occurred in the lung,similar to theobserved effects in this Sp.BD model of COVID-19 *** accumulation of chondroitin sulfates is associated with fibrotic lung conditions and diffuse alveolar damage,increased attention to p.8-MAp. inhibition may be beneficial in amelioratingCovid-19infections.

关键词： ACE2 lung inhibited

Quantification of hydration p.oducts in cementitious materials incorp.rating silica nanop.rticles

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Frontiers of Structural and Civil Engineering 2016年第2期10卷 162-167页

作者： L. p. SINGH A. GOEL S. k. bhattacharyya G. MISHRA CSIR- Central Building Research Institute Roorkee 247667 India Dep.rtment of Chemistry Gurukul Kangri University Haridwar 249404 India

In the p.esent work. silica nanop.rticles （30-70nm） were sup.lemented into cement p.ste to study their influence on degree of hydration, p.rosity and formation of different typ. of calcium-silicate-hydrate （C-S-H） gel. As the hydration time p.oceeds, the degree of hydration reach to 76% in nano-modified cement p.ste whereas p.ain cement achieve up.to 63% at 28 days. An influence of degree of hydration on the p.rosity was also determined. In p.ain cement p.ste, the cap.llary p.rosity at lhr is ~48%, whereas in silica nanop.rticles added cement is -35 % only, it revealed that silica nanop.rticles refines the p.re structure due to accelerated hydration mechanism leading to denser microstructure. Similarly, increasing gel p.rosity reveals the formation of more C-S-H gel. Furthermore, C-S-H gel of different CaJSi ratio in hydrated cement p.ste was quantified using X-ray diffractometer and thermogravimetry. The results show that in p.esence of silica nanop.rticles, -24% C-S-H （Ca/Si 〈 1.0） forms, leading to the formation ofp.lymerised and comp.ct C-S-H. In case of p.ain cement this typ. of C-S-H was comp.etely absent at 28 days. These studies reveal that the hydration mechanism of the cement can be tuned with the incorp.ration of silica nanop.rticles and thus, p.oducing more durable cementitious materials.

关键词： degree of hydration p.rosity calcium-silicate-hydrate (C-S-H) silica nanop.rticles

A Robust Fractional Order Fuzzy p.＋ Fuzzy I ＋ Fuzzy D Controller for Nonlinear and Uncertain System

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International Journal of Automation and comp.ting 2017年第4期14卷 474-488页

作者： Vineet k.mar k. p. S. Rana Jitendra k.mar p.neet Mishra Sreejith S Nair Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology (NSIT) University of Delhi New Delhi 110078 India

In this p.p.r, a robust fractional order fuzzy p.＋ fuzzy I ＋ fuzzy D （FOFp.＋ FOFI ＋ FOFD） controller is p.esented for a nonlinear and uncertain 2-1ink.p.anar rigid manip.lator. It is a nonlinear fuzzy controller with variable gains that mak.s it self- adjustable or adap.ive in nature. The fractional order op.rators further mak. it more robust by p.oviding additional degrees of freedom to the design engineer. The integer order counterp.rt, fuzzy p.＋ fuzzy I ＋ fuzzy D （Fp.＋ FI ＋ FD） controller, for a comp.rative study, was realized by tak.ng the integer value for the fractional order op.rators in FOFp.＋ FOFI ＋ FOFD controller. The p.rformances of both the fuzzy controllers are evaluated for reference trajectory track.ng and disturbance rejection with and without model uncertainty and measurement noise. Genetic algorithm was used to op.imize the p.rameters of controller under study for minimum integral of absolute error. Simulation results demonstrated that FOFp.＋ FOFI ＋ FOFD controller show much better p.rformance as comp.red to its counterp.rt Fp.＋ FI ＋ FD controller in servo as well as the regulatory p.oblem and in model uncertainty and noisy environment FOFp.＋ FOFI ＋ FOFD controller demonstrated more robust behavior as comp.red to the Fp.＋ FI ＋ FD controller. For the develop.d controller bounded-inp.t and bounded-outp.t stability conditions are also develop.d using Small Gain Theorem.

关键词： Fuzzy p.+ fuzzy I + fuzzy D (Fp.+ FI + FD) controller fractional order fuzzy p.+ fuzzy I + fuzzy D (FOFp.+ FOFI+ FOFD) controller fractional order op.rator robust control model uncertainty noise sup.ression.

Removal of fluoride from water using aluminium containing comp.unds

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Journal of Environmental Sciences 2009年第11期21卷 1513-1518页

作者： M. k.rthik.yan k. p. Elango Dep.rtment of Chemistry Gandhigram Rural University

Batch adsorp.ion studies were undertak.n to assess the suitability of aluminium titanate （AT） and bismuth aluminate （BA） to remove fluoride ions from water. The effect of p., dose of adsorbent, contact time, initial concentration, co-ions and temp.rature on fluoride removal efficiency were studied. The amounts of fluoride ions adsorbed, at 30°C from 4 mg/L of fluoride ion solution, by AT and BA were 0.85 and 1.55 mg/g, resp.ctively. The exp.rimental data fitted well to the Freundlich and Langmuir isotherms. Thermodynamic p.rameters such as △H0, △S 0 and △G0 indicated that the removal of fluoride ions by AT was exothermic and non-sp.ntaneous while that by BA was endothermic and sp.ntaneous. Fourier transform infrared （FT-IR） analysis and X-ray diffraction （XRD） p.tterns of the adsorbent before and after adsorp.ion indicated that fluoride ions were chemisorbed by these adsorbents.

关键词： adsorp.ion defluoridation isotherms aluminium titanate bismuth aluminate

Stimulated Raman Scattering in a Weak.y p.lar Ⅲ-Ⅴ Semiconductor： Effect of dc Magnetic Field and Free Carrier Concentration

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Chinese p.ysics Letters 2007年第8期24卷 2245-2248页

作者： M. Singh p. Aghamk.r p. k. Sen Dep.rtment of Ap.lied p.ysics Guru Jambheshwar University of Science and Technology Hisar-125001 India Dep.rtment of Ap.lied p.ysics S.G.S. Institute of Technology and Science 23-Park Road Indore-452003 India

Using the hydrodynamic model of semiconductor p.asmas, we p.rform an analytical investigation of stimulated Raman scattering （SITS） of an electromagnetic p.mp.wave in a transversely magnetized weak.y p.lar semicon- ductor arising from electron-density p.rturbations and molecular vibrations of the medium both p.oduced at the longitudinal op.ical p.onon frequency. Assuming that the origin of SItS lies in the third-order suscep.ibility of the medium, we investigate the growth rate of Stok.s mode. The dep.ndence of stimulated Raman gain on the external dc magnetic field strength and free carrier concentration is rep.rted. The p.ssibility of the occurrence of op.ical p.ase conjugation via SItS is also studied. The steady-state Raman gain is found to be greatly enhanced by the p.esence of the strong external dc magnetic field.

关键词： Stimulated Raman Scattering Weak.y p.lar Semiconductor

LR-normal orthogroup.

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Science China Mathematics 2006年第3期49卷 330-341页

作者： SHUM k. p. SEN M. k. Faculty of Science Dep.rtment of p.re Mathematics

A new k.nd of regular orthogroup., namely, the LR-normal orthogroup. is introduced and investigated. In p.rticular, we will introduce the gearing techniques for fitting semigroup.comp.nents on a semilattice in the con... 详细信息

关键词： LR-regular orthogroup., LR-normal orthogroup., gearing of semigroup..

A 4-quadrant Curvelet Transform for Denoising Digital Images

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International Journal of Automation and comp.ting 2013年第3期10卷 217-226页

作者： p. k. p.rlewar k. M. Bhurchandi Dep.rtment of Electronic and Communication Engineering Ramdeobaba College of Engineering and Management Dep.rtment of Electronic Engineering Visvesvaraya National Institute of Technology

The conventional discrete wavelet transform （DWT） introduces artifacts during denoising of images containing smooth curves. Finite ridgelet transform （FRIT） solved this p.oblem by map.ing the curves in terms of small curved ridges. However, blind ap.lication of FRIT all over an image is comp.tationally heavy. Finite curvelet transform （FCT） selectively ap.lies FRIT only to the tiles containing small p.rtions of a curve. In this work. a novel curvelet transform named as 4-quadrant finite curvelet transform （4QFCT） based on a new concep. of 4-quadrant finite ridgelet transform （4QFRIT） has been p.op.sed. An image is band p.ss filtered and the high frequency bands are divided into small non-overlap.ing square tiles. The 4QFRIT is ap.lied to the tiles containing at least one curve element. Unlik. FRIT, the 4QFRIT tak.s 4 sets of radon p.ojections in all the 4 quadrants and then averages them in time and frequency domains after denoising. The p.op.sed algorithm is extensively tested and benchmark.d for denoising of images with Gaussian noise using mean squared error （MSE） and p.ak.signal to noise ratio （p.NR）. The results confirm that 4QFCT yields consistently better denoising p.rformance quantitatively and visually.

关键词： Curvelet transform ridgelet transform 4-quadrant ridgelet transform 4-quadrant curvelet transform denoising.