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Effect of a Submerged Porous Plate on the Hydroelastic Response of a Very Large Floating Structure

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Journal of Marine Science and Application 2018年第4期17卷 564-577页

作者： harekrushna behera Trilochan Sahoo Chiu-On Ng SRM Research Institute and Department of Mathematics SRM Institute of Science and Technology Department of Ocean Engineering and Naval Architecture Indian Institute of Technology Department of Mechanical Engineering The University of Hong Kong

Scattering of oblique flexural-gravity waves by a submerged porous plate in a finite water depth is investigated under the assumptions of linearized surface waves and small-amplitude structural response. The study is carried out using eigenfunction expansions and the corresponding orthogonal mode-coupling relations associated with flexural-gravity waves in uniform water depth. The characteristics of the roots of the complex dispersion relation are examined using the principle of counting argument and contour plot. Characteristics of the flexural-gravity waves are studied by assuming both the floating elastic plate and the submerged porous plate are infinitely extended in horizontal directions. The effectiveness of the submerged porous structure on the reflection, transmission, and dissipation coefficients is analyzed for various wave and structural parameters.

关键词： Flexural-gravity wave Mode-coupling relation Dispersion relation Porous plate Reflection and transmission coefficients

Unimolecular artificial transmembrane channel with terminal dihydrogen phosphate groups showing transport selectivity for ammonium

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Chinese Chemical Letters 2020年第1期31卷 77-80页

作者： Jian-Yu Chen Qi Xiao harekrushna behera Jun-Li Hou Department of Chemistry Fudan University

A new artificial transmembrane channel molecule bearing dihydrogen phosphate groups has been *** terminal dihydrogen phosphate groups enable the channel to be highly negatively charged at both ends of the channel *** artificial channel could incorporate into the lipid bilayer efficiently under low *** channel displays high NH4+/K+selectivity due to the electrostatic interaction and hydrogen bonding between NH4+and the terminal dihydrogen phosphate groups.

关键词： Artificial transmembrane channel Ammonium transport Dihydrogen phosphate Pillararene Transmembrane transport Transport selectivity

Numerical modelling of post-failure behaviors of coal specimens

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 514-531页

作者： Ajeet Yadav Bhaskara behera Gauri Shankar Prasad Singh Sanjay Kumar Sharma Department of Mining Engineering Indian Institute of Technology(Banaras Hindu University)VaranasiUttar Pradesh221005India

A modelling approach consisting of best-fit relations to estimate the post-yield strength parameters is presented for simulating post-peak behavior beyond the point of residual strength of coal pillars having different w/h *** model was developed based on back-analysis of the complete stress-strain behavior of specimens belonging to six different Indian coal seams with different w/h ratios of 0.5 *** was found that the simultaneous degradation of the cohesion and friction angle of the Mohr-Coulomb rock material characterizes the post-peak strength behavior of the *** resulting expressions are simplistic as they require parameters that can be easily determined using uniaxial and triaxial compression ***,the developed model was validated by simulating the triaxial tests of coal specimens with different sizes under varying confining stresses and comparing its findings with the published test *** study showed that its implementation in the numerical model could reproduce laboratory-observed mechanical response,deformation behavior,and failure mechanism very closely.

关键词： Strain softening Dilatancy Interface Shape effect Residual strength

A Unique Modelling Strategy to Dynamically Simulate the Performance of a Lobe Pump for Industrial Applications

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Advances in Chemical Engineering and Science 2024年第2期14卷 57-73页

作者： Deepak Kumar Kanungo Rabiranjan Murmu harekrushna Sutar Bharat Heavy Electricals Limited Corporate R & D Hyderabad Telangana India Chemical Engineering Department Indira Gandhi Institute of Technology Sarang Odisha India

The performance of a newly designed tri-lobe industrial lobe pump of high capacity is simulated by using commercial CFD solver Ansys Fluent. A combination of user-defined-functions and meshing strategies is employed to capture the rotation of the lobes. The numerical model is validated by comparing the simulated results with the literature values. The processes of suction, displacement, compression and exhaust are accurately captured in the transient simulation. The fluid pressure value remains in the range of inlet pressure value till the processes of suction and displacement are over. The instantaneous process of compression is accurately captured in the simulation. The movement of a particular working chamber is traced along the gradual degree of lobe’s rotation. At five different degrees of lobe’s rotation, pressure contour plots are reported which clearly shows the pressure values inside the working chamber. Each pressure value inside the working chamber conforms to the particular process in which the working chamber is operating. Finally, the power requirement at the shaft of rotation is estimated from the simulated values. The estimated value of power requirement is 3.61 BHP FHP whereas the same calculated theoretically is 3 BHP FHP. The discrepancy is attributed to the assumption of symmetry of blower along the thickness.

关键词： CFD Lobe Pump Moving Dynamic Mesh Pressure Fluctuation Transient Simulation

Analytical solutions fractional order partial differential equations arising in fluid dynamics

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Applied Mathematics(A Journal of Chinese Universities) 2024年第3期39卷 458-468页

作者： Sidheswar behera Jasvinder Singh Pal Virdi Department of Physics Veer Surendra Sai University of TechnologyOdishaIndia

This article describes the solution procedure of the fractional Pade-Ⅱ equation and generalized Zakharov equation(GSEs)using the sine-cosine ***-Ⅱ is an important nonlinear wave equation modeling unidirectional propagation of long-wave in dispersive media and GSEs are used to model the interaction between one-dimensional high,and low-frequency *** of trigonometric and hyperbolic function solutions in fractional calculus are *** simulations of the numerical solutions are flaunted by MATLAB.

关键词： the sine-cosine method He's fractional derivative analytical solution fractional Pade-Ⅱequation fractional generalized Zakharov equation

Next Generation Nutrition: Genomic and Molecular Breeding Innovations for Iron and Zinc Biofortification in Rice

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Rice science 2024年第5期31卷 526-544,I0029,I0030页

作者： Kunhikrishnan Hemalatha DHANYALAKSHMI Reshma MOHAN Sasmita behera Uday Chand JHA Debashis MOHARANA Ahalya behera Sini THOMAS Preman Rejitha SOUMYA Rameswar Prasad SAH Radha BEENA Department of Plant Physiology College of AgriculturePadannakkadKerala Agricultural UniversityKerala 671314India Department of Plant Physiology College of AgricultureVellayaniKerala Agricultural UniversityKerala 695522India Crop Improvement Division India Council of Agricultural Research-National Rice Research InstituteOdisha 7530006India Department of Plant Breeding and Genetics Indian Institute of Pulse ResearchKanpur 208024India Department of Plant Physiology College of AgricultureKumarakomKerala Agricultural UniversityKerala 686563India

Global efforts to address malnutrition and hidden hunger, particularly prevalent in low- and middle-income countries, have intensified, with a focus on enhancing the nutritional content of staple crops like rice. Despite serving as a staple for over half of the world's population, rice falls short in meeting daily nutritional requirements, especially for iron(Fe) and zinc(Zn). Genetic resources, such as wild rice species and specific rice varieties, offer promising avenues for enhancing Fe and Zn content. Additionally, molecular breeding approaches have identified key genes and loci associated with Fe and Zn accumulation in rice grains. This review explores the genetic resources and molecular mechanisms underlying Fe and Zn accumulation in rice grains. The functional genomics involved in Fe uptake, transport, and distribution in rice plants have revealed key genes such as OsFRO1, OsIRT1, and OsNAS3. Similarly, genes associated with Zn uptake and translocation, including OsZIP11 and OsNRAMP1, have been identified. Transgenic approaches, leveraging transporter gene families and genome editing technologies, offer promising avenues for enhancing Fe and Zn content in rice grains. Moreover, strategies for reducing phytic acid(PA) content, a known inhibitor of mineral bioavailability, have been explored, including the identification of low-PA mutants and natural variants. The integration of genomic information, including whole-genome resequencing and pan-genome analyses, provides valuable insights into the genetic basis of micronutrient traits and facilitates targeted breeding efforts. Functional genomics studies have elucidated the molecular mechanisms underlying Fe uptake and translocation in rice. Furthermore, transgenic and genome editing techniques have shown promise in enhancing Fe and Zn content in rice grains through the manipulation of key transporter genes. Overall, the integration of multi-omics approaches holds significant promise for addressing global malnutri

关键词： biofortification grain quality iron phytic acid rice zinc

Rice Heat Tolerance Breeding: A Comprehensive Review and Forward Gaze

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Rice science 2024年第4期31卷 375-400,I0022页

作者： Ravindran Lalithambika VISAKH Sreekumar ANAND Sukumaran Nair ARYA behera SASMITA Uday Chand JHA Rameswar Prasad SAH Radha BEENA Department of Genetics and Plant Breeding College of AgricultureVellayaniKerala Agricultural UniversityThiruvananthapuramKerala 695522India Crop Improvement Division Indian Council of Agricultural Research-National Rice Research InstituteCuttackOdisha 7530006India Department of Plant Breeding and Genetics Indian Institute of Pulse ResearchKanpur 208024India Department of Plant Physiology College of AgricultureVellayaniKerala Agricultural UniversityThiruvananthapuramKerala 695522India

The yield potential of rice is seriously affected by heat stress due to climate change. Since rice is a staple food globally, it is imperative to develop heat-resistant rice varieties. Thus, a thorough understanding of the complex molecular mechanisms underlying heat tolerance and the impact of high temperatures on various critical stages of the crop is needed. Adoption of both conventional and innovative breeding strategies offers a long-term advantage over other methods, such as agronomic practices, to counter heat stress. In this review, we summarize the effects of heat stress, regulatory pathways for heat tolerance, phenotyping strategies, and various breeding methods available for developing heat-tolerant rice. We offer perspectives and knowledge to guide future research endeavors aimed at enhancing the ability of rice to withstand heat stress and ultimately benefit humanity.

关键词： genetic mechanism high-temperature stress molecular breeding genomics selection

Next Generation Nutrition: Genomic and Molecular Breeding Innovations for Iron and Zinc Biofortification in Rice

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Rice Science 2024年第05期 526-546页

作者： Kunhikrishnan Hemalatha DHANYALAKSHMI Reshma MOHAN Sasmita behera Uday Chand JHA Debashis MOHARANA Ahalya behera Sini THOMAS Preman Rejitha SOUMYA Rameswar Prasad SAH Radha BEENA Department of Plant Physiology College of Agriculture Padannakkad Kerala Agricultural University Department of Plant Physiology College of Agriculture Vellayani Kerala Agricultural University Crop Improvement Division India Council of Agricultural Research-National Rice Research Institute Department of Plant Breeding and Genetics Indian Institute of Pulse Research Department of Plant Physiology College of Agriculture Kumarakom Kerala Agricultural University

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Steroids in acute respiratory distress syndrome:A panacea or still a puzzle?

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World Journal of Critical Care Medicine 2024年第2期13卷 93-105页

作者： Sharmili Sinha Rohit Patnaik Srikant behera Department of Critical Care Medicine Apollo HospitalsBhubaneswar 751005OdishaIndia Department of Critical Care Medicine Medeor 24x7 HospitalAl Danah 40330Abu DhabiUnited Arab Emirates Department of Internal Medicine and Critical Care All India Institute of Medical SciencesBhubaneswar 751019OdishaIndia

Acute respiratory distress syndrome(ARDS)is a unique entity marked by various etiologies and heterogenous *** remain concerns regarding the efficacy of particular medications for each severity level apart from respiratory *** several pharmacotherapies which have been examined in the treatment of ARDS,corticosteroids,in particular,have demonstrated potential for improving the resolution of ***,it is imperative to consider the potential adverse effects of hyperglycemia,susceptibility to hospital-acquired infections,and the development of intensive care unit acquired weakness when administering *** far,a multitude of trials spanning several decades have investigated the role of corticosteroids in *** stringent trials are necessary to identify particular subgroups before implementing corticosteroids more widely in the treatment of *** review article provides a concise overview of the most recent evidence regarding the role and impact of corticosteroids in the management of ARDS.

关键词： Acute respiratory distress syndrome Corticosteroids Septic shock Community acquired pneumonia COVID-19 Randomized controlled trials