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Chemical reaction effect of an axisymmetric flow over radially stretched sheet

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Propulsion and Power Research 2019年第1期8卷 79-84页

作者： B.Nayak S.R.Mishra g.gopi krishna Department of Mathematics Sikslia‘O’AnusandhanKhandagiriBhubaneswar 751030OdisaIndia Department of Mathematics Sri Venkateswara UniversityTirupatiIndia

A steady boundary layer flow over a porous flat plate has been considered in the present *** transfer analysis with first order chemical reaction is also considered instead of heat *** plate concentration is considered in the form of power law instead of taking *** goveming PDEs are transformed into ordinary differential equations using similarity transfomation and then these ODEs are solved by employing Runge-Kutta fourth order method associated with shooting technique.A parametric study of all involving parameters is obtained by the help of *** major findings are:(i)the concentration of the fluid in its boundary layer decrease with increase in heavier species,the reaction rate parameter and the power law exponent;(ji)the rate of mass transfer increases with an increase in reaction rafe parameter and power-law exponent.

关键词： Magnetohydrodynamic Mass transfer First order chemical reaction Runge-Kutta method Shooting technique

Reconstructing Missing Hourly Real-Time Precipitation Data Using a Novel Intermittent Sliding Window Period Technique for Automatic Weather Station Data

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Journal of Meteorological Research 2017年第4期31卷 774-790页

作者： Nagaraja HEMA krishna KANT Department of Computer Science and Engineering/Information Technology Jaypee Institute of Information Technology Noida 201307 India

Precipitation is the most discontinuous atmospheric parameter because of its temporal and spatial variability. Precipitation observations at automatic weather stations（AWSs） show different patterns over different time periods. This paper aims to reconstruct missing data by finding the time periods when precipitation patterns are similar, with a method called the intermittent sliding window period（ISWP） technique—a novel approach to reconstructing the majority of non-continuous missing real-time precipitation data. The ISWP technique is applied to a 1-yr precipitation dataset（January 2015 to January 2016）, with a temporal resolution of 1 h, collected at 11 AWSs run by the Indian Meteorological Department in the capital region of Delhi. The acquired dataset has missing precipitation data amounting to 13.66%, of which 90.6% are reconstructed successfully. Furthermore, some traditional estimation algorithms are applied to the reconstructed dataset to estimate the remaining missing values on an hourly basis. The results show that the interpolation of the reconstructed dataset using the ISWP technique exhibits high quality compared with interpolation of the raw dataset. By adopting the ISWP technique, the root-mean-square errors（RMSEs）in the estimation of missing rainfall data—based on the arithmetic mean, multiple linear regression, linear regression,and moving average methods—are reduced by 4.2%, 55.47%, 19.44%, and 9.64%, respectively. However, adopting the ISWP technique with the inverse distance weighted method increases the RMSE by 0.07%, due to the fact that the reconstructed data add a more diverse relation to its neighboring AWSs.

关键词： automatic weather station intermittent sliding window period interpolation mean absolute error reconstruction of missing precipitation data

global wild rice germplasm resources conservation alliance:World Wild-Rice Wiring

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Molecular Plant 2024年第4期17卷 516-518页

作者： Xiaoming Zheng Disna Ratnasekera Jiayu Fan Robert J.Henry Beng-Kah Song Kenneth M.Olsen Bal krishna Joshi Maria Celeste N.Banaticla-Hilario Tonapha Pusadee Adane getachew Melaku Yeyinou Laura Estelle Loko Koukham Vilayheuang gavers K.Oppong Samuel Aduse Poku Peterson W.Wambugu Song ge Aldo Merotto Junior Ohn Mar Aung Ramaiah Venuprasad Ajay Kohli Wenbin Zhou Qian Qian National Key Facility for Crop gene Resources and genetic Improvement Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Sanya National Research Institute of Breeding in Hainan Chinese Academy of Agricultural SciencesBeijing 100081China International Rice Research Institute DAPO Box 7777Metro Manila 4031Philippines Department of Agricultural Biology Faculty of AgricultureUniversity of RuhunaMatara 81000Sri Lanka Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya CityHainan Province 572024China Hainan University Haikou 570228China ARC Centre of Excellence for Plant Success in Nature and Agriculture University of QueenslandBrisbaneQLD4072Australia School of Science Monash University Malaysia47500 Bandar SunwaySelangor 47500Malaysia Department of Biology Washington University in St.LouisSt.LouisMO 63130-4899USA National Agriculture genetic Resources Center(genebank) KhumaltarPO Box 3055KathmanduNepal Plant Biology Division Insttute of Biological SciencesUniversity of the Pilippines Los BanosLos BanosLaguna 4031Philippines Division of Agronomy Department of Plant and Soil SciencesFaculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Bio and Emerging Technology Institute Addis Ababa 1165Ethiopia National University of Sciences TechnologiesEngineering and Mathematics(UNSTIM)Dassa-ZouméBP 14Benin National genebank Rice and Cash Crops Research CenterNAFRIVientiane 0605Lao PDR Plant Sciences and the Bioeconomy Rothamsted ResearchHarpenden AL52JQUK UK Future Food Beacon of Excellence and School of Biosciences and University of Nottingham Nottingham LE125RDUK Department of Plant and Environmental Biology University of GhanaAccraGhana Kenya Agricultural and Livestock Research Organization Genetic Resources Research InstituteNairobi 00200Kenya Institute of Botany Chinese Academy of SciencesBeijing 100093China Federal University of Rio grande do Sul UFRGSPorto Alegre 91501-970RSBrazil Department of Agricultur

Wild relatives of crop are key genetic resources serving as diversity reservoirs for crop improvement under changing ***(Oryza sativa)is one of the most important crops in the world,providing staple food for half of the world's *** rice is thus a critical germplasm resource for sustained global food security,ensuring high production yields,improved quality,and stress resistance in the face of climate *** rice is closely related to domesticated rice and has a rich genetic diversity and exceptional adaptability to extreme *** has played a pivotal role in the history of rice hybridization and has become a key resource for rice breeding *** identification of wild-type cytoplasmic male sterility resources paved the way for the achievement of the“three lines”goal in hybrid rice,leading to a significant increase in rice *** addition,the use of resistance alleles found in wild rice is making rice production more resilient to losses caused by environmental ***,wild rice germplasm resources are threatened due to habitat destruction and other anthropogenic *** the same time,the lack of centralized distribution of wild rice has hampered the sharing of basic information on wild rice resources and the utilization and conservation of wild rice in each country,as well as collaboration among scientists.

关键词： germplasm breeding crops

Reviving Fertility:Phytochemicals as Natural Allies in the Fight against Non-genetic Male Infertility

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Clinical Complementary Medicine and Pharmacology 2024年第1期4卷 112-128页

作者： Vivek P.Chavda Shreya S Sonak Pankti C.Balar Krupa Vyas Pranali Palandurkar Komal Mule krishna Patel Vivek Hala Dixa A.Vaghela Devarshi Acharya Akta Vaishnav Jimil gandhi Vasso Apostolopoulos Department of Pharmaceutics and Pharmaceutical Technology L M College of PharmacyAhmedabadGujarat 380008India Bharati Vidyapeeth University’s Poona College of Pharmacy ErandwaneKothrudPune 411038India Pharmacy section L M College of PharmacyAhmedabadGujarat 380008India University Department of Pharmaceutical Sciences R.T.M Nagpur 440033India Department of Pharmaceutics Khyati College of PharmacyAhmedabad 380009India IICISST Sardar Patel UniversityVallabh Vidyanagar 388120India Institute for Health and Sport Immunology and Translational ResearchVictoria UniversityMelbourneVIC 3030Australia Immunology Program Australian Institute for Musculoskeletal ScienceMelbourneVIC 3021Australia

Background:Male infertility poses a growing challenge to the healthcare system,with its prevalence on the *** lifestyle,food,and addictions such as smoking,alcoholism,*** the *** several approaches are being investigated to prevent and treat this condition,each therapeutic approach has its *** medications continue to play a crucial role in the healthcare *** recent years,there has been a shift towards determining the efficacy of phytochemicals(or,herbal drugs)as ***:To evaluate the effect of various herbs,plant,metabolites,or a part of plant in management of non-genetic male ***:The male infertility-associated keywords were searched in PubMed,excluding those non-English writen papers.A total of 146 pertinent and closely connected records were included for full reading and inclusion in the systemic ***:The manuscript focuses on individual herbal drug components,their active ingredients,their role in improving the condition and quality of life,and decreasing the prevalence of male ***:Herbal medicinal plants show promising outcomes to treat male *** alternatives are appealing and have regained *** future holds promise for some of these herbal treatments to advance with many showing improved outcomes in males with infertility issues.

关键词： Male infertility Plant-based management Phytochemical Herbal drug Traditional Chinese medicine

Call for action:Increased healthcare utilization with growing use of percutaneous cholecystectomy tube over initial cholecystectomy in cirrhotics

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Hepatobiliary & Pancreatic Diseases International 2022年第1期21卷 56-62页

作者： Srikanth Vedachalam Sajid Jalil somashaker g.krishna Kyle Porter Na Li Sean g Kelly Lanla Conteh Khalid Mumtaz Department of Internal Medicine The Ohio State University Wexner Medical CenterColumbusOH 43210USA Division of gastroenterology Hepatology and NutritionThe Ohio State University Wexner Medical CenterColumbusOH 43210USA Center for Biostatistics Department of Biomedical InformaticsThe Ohio State University Wexner Medical CenterColumbusOH 43210USA

Background:Acute calculous cholecystitis(ACC)is frequently seen in cirrhotics,with some being poor candidates for initial ***,these patients may undergo percutaneous cholecystostomy tube(PCT)*** studied the healthcare utilization and predictors of cholecystectomy and PCT in patients with ***:The National Database was queried to study all cirrhotics and non-cirrhotics with ACC between 2010-2014 who underwent initial PCT(with or without follow-up cholecystectomy)or *** patients were divided into compensated and decompensated *** predictors and outcomes of initial PCT and failure to undergo subsequent cholecystectomy were ***:Out of 919189 patients with ACC,13283(1.4%)had *** cirrhotics,cholecystec-tomy was performed in 12790(96.3%)and PCT in the remaining 493(3.7%).PCT was more frequent in cirrhotics(3.7%)than in non-cirrhotics(1.4%).Multivariate analyses showed increased early readmis-sions[odds ratio(OR)=2.12,95%confidence interval(CI):1.43-3.13,Pgth of stay(effect ratio=1.39,95%CI:1.20-1.61,Pgoing initial PCT compared to *** cirrhosis(OR=2.25,95%CI:1.67-3.03,Pghest odds of getting initial ***,regardless of compensated(OR=0.56,95%CI:0.34-0.90,P=0.020)or decompensated(OR=0.28,95%CI:0.14-0.59,Pgetting a subsequent ***:Cirrhotic patients undergo fewer cholecystectomy incurring initial PCT ***,the rates of follow-up cholecystectomy are lower in *** healthcare utilization is seen with initial PCT amongst cirrhotic *** situation reflects suboptimal management of ACC in cirrhotics and a call for action.

关键词： National Healthcare Cholecystectomy Percutaneous cholecystostomy Cirrhosis Decompensated cirrhosis

Fabrication and Characterisation of Rutile-TiO_2 Coatings on Metallic Alloy Substrates

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材料热处理学报 2004年第5B期25卷 862-865页

作者： D. Siva Rama krishna School of Materials Engineering Nanyang Technological University Singapore 639798

In the present work, attempts have been made to extend the use of the tribological and chemical properties of rutile-TiO2 to metallic alloy systems, by forming a rutile coating on the metallic substrates. Two metallic alloys were selected in this study, including AISI316L austenitic stainless steel and aluminium alloy. The rutile-based coatings were fabricated by magnetron sputter deposition of a pure titanium coating first, and then thermal oxidation of the coated specimens to partially convert the titanium coating to rutile oxide and to promote interfacial reactions which can significantly enhance the coating-substrate adhesion strength. The structures and properties of the coating-substrate systems were characterized by a variety of analytical and experimental techniques, including X-ray diffraction, glow discharge spectrometry, high resolution SEM, nanoindentation, microscratch, friction and wear testing, as well as electrochemical testing. The results show that the friction and wear properties, as well as the corrosion resistance of the metallic alloys can be significant enhanced by surface engineering with rutile-TiO2.

关键词：金红石二氧化钛不锈钢磨损性能耐蚀性

Comparison of microwave and autoclave treatment for biomedical waste disinfection

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Systems Microbiology and Biomanufacturing 2022年第4期2卷 732-742页

作者： Vamsi krishna Reddy Kollu Parmeshwar Kumar krishna gautam All India Institute of Medical Sciences New Delhi 110029India Centre for Energy and Environmental Sustainability LucknowUttar Pradesh 226029India

As the world is facing a Covid-19 pandemic,this virus teaches a lesson about the importance of on-site ***-site disinfection/sterilization with real-time monitoring of biomedical waste generated from the medical facilities is mandatory to prevent hospital-acquired infection(HAI).In this study,the life cycle assessment of two technologies,i.e.,microwave(radiation-based)and autoclave(steam-based)were performed to summarize the inside-out evaluation of both technologies in terms of efficiency,efficacy,and *** results of disinfection efficacy indicated a log 10 reduction(almost 100%)in the vegetative load of microorganisms compared to the control,showing a similar level of disinfection efficacy of both ***,both technologies were compared on several parameters,and it was discovered that the autoclave uses more time and resources than the *** total cost of an autoclave to the government is approximately double that of a microwave,while the operational cost of an autoclave is more than double that of a *** findings from this study indicate that MACS may be used as a dry technique of biomedical disinfection,and its portability,tunability,and compactness make it a suitable alternative for biomedical disinfection and sterilization.

关键词： Biomedical waste management Microwave Disinfection Sterilization COVID-19

Alternative food and external source of infection stabilize predator-prey oscillations -- A conclusion drawn from an eco-epidemiological model

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International Journal of Biomathematics 2015年第3期8卷 83-107页

作者： krishna Pada Das Department of MathematicsMahadevananda Mahavidyalaya Barrackpore Kol- 120 India

Das et al. [Effect of disease-selective predation on prey infected by contact and external sources, Biosystems 95（3）（2009） 188-199] proposed an eco-epidemiological model where the prey species is infected through the external source of infection and contact of the species. In this present study we have modified their model by assuming that the predator consumes both the susceptible as well as the infected prey following the modified Holling type-Ⅱ functional response. Our main focusing points of this study are the role of infection rate （both internal and external）, alternative food, and half-saturation constant in the predator prey dynamics with disease in the prey population. We have shown the local stability of the boundary as well as the interior equilibrium point under certain conditions. We have Mso worked out the permanence of the system. Our simulation results show that the system enters into limit cycle oscillations from stable position for higher values of the contact rate. But it is also shown that the external infection rate, enrichment of the alternative food of the predator population and the half-saturation constant can prevent limit cycle oscillations and stabilize the system. Thus external dis- ease propagation, enrichment of the alternative food resource, and the half-saturation constant are the key factors for preventing the oscillatory behavior of the species.

关键词： External source of infection alternative food modified Holling type-Ⅱ functional response bifurcation permanence.

ROLE OF HARVESTINg IN CONTROLLINg CHAOTIC DYNAMICS IN THE PREDATOR-PREY MODEL WITH DISEASE IN THE PREDATOR

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International Journal of Biomathematics 2013年第2期6卷 105-129页

作者： krishna PADA DAS Department of Mathematics Mahadevananda Mahavidyalaya Monirampore P. O. Barraekpore Kolkata 700120 India

Predator prey model with harvesting is well studied. The role of disease in such system has a great importance and cannot be ignored. In this study we have considered a predator prey model with disease circulating in the predator population only and we have also considered harvesting in the prey and in the susceptible predator. We have studied the local stability, Hopf bifurcation of the model system around the equilibria. We have derived the ecological and the disease basic reproduction numbers and we have observed its importance in the community structure of the model system and in controlling disease propagation in the predator population. We have paid attention to chaotic dynamics for increasing the force of infection in the predator. Chaotic population dynamics can exhibit irregular fluctuations and violent oscillations with extremely small or large population abundances. In this study main objective is to show the role of harvesting in controlling chaotic dynamics. It is observed that reasonable harvesting on the prey and the susceptible predator prevents chaotic dynamics.

关键词： Disease in predator harvesting chaos period-double limit cycle stable focus Hopf bifurcation.