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Systematic Assessment of Synthesized Tri-magnesium Phosphate Powders(Amorphous,Semi-crystalline and Crystalline) and Cements for Ceramic Bone Cement Applications

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Journal of Materials Science & Technology 2015年第5期31卷 437-444页

作者： Nicole Ostrowski Vidisha Sharma Abhijit Roy prashant N.Kumta Department of Bioengineering University of Pittsburgh Center of Complex Engineered Multifunctional Materials University of Pittsburgh Department of Chemical and Petroleum Engineering University of Pittsburgh Department of Mechanical Engineering and Materials Science University of Pittsburgh

Magnesium phosphate cements have come under investigation in recent years for use as an alternative to calcium phosphate cements for bone void repair *** indicates that magnesium phosphate cements obtain higher initial strengths after cement reaction and resorption in more clinically appropriate time frames than commercially available calcium phosphate *** this study,amorphous,partially amorphous and crystalline tri-magnesium phosphate powders were synthesized via an aqueous precipitation reaction with subsequent thermal treatment,and characterized using techniques such as X-ray diffraction and Fourier transform infrared *** materials were assessed for their functionality in cementing reaction with a 3.0 mol/L,pH 7.0 ammonium phosphate solution,including setting time and pH evolution in phosphate buffered saline *** indicated that the amorphous and semi-crystalline tri-magnesium phosphate powders were highly reactive with the setting solution but resulted in mechanically weak cements,while the crystalline tri-magnesium phosphate powder reacted efficiently with the cement solution and were mechanically strong following the cement reaction.X-ray diffraction and scanning electron microscopy analyses indicated significant changes in the phase composition and morphology of the cements following incubation in phosphate buffered *** were perceived to be detrimental to the integrity of the amorphous and semi-crystalline tri-magnesium phosphate derived cements but not to those created with fully crystalline tri-magnesium *** crystalline tri-magnesium phosphate material resulted in the most functional cement as this embodiment displayed the most clinically relevant setting time as well as the highest mechanical resilience and neutral pH during incubation in saline solution rendering them potentially viable as bone void fillers.

关键词： Amorphous magnesium phosphate Tri-magnesium phosph

The effects of climate and land use change on the potential distribution and nesting habitat of the Lesser Adjutant in Nepal

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Avian Research 2023年第3期14卷 326-335页

作者： Hem Bahadur Katuwal Hari Prasad Sharma prashant Rokka Krishna Prasad Bhusal Bishnu Prasad Bhattarai Sabina Koirala Sandeep Chhetri Luitel Shailendra yadav Ganesh Sah Hem Sagar Baral Laxman Prasad Poudyal Lin Wang Rui-Chang Quan Center for Integrative Conservation Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan666303China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezinNay Pyi Taw05282Myanmar Yunnan International Joint Laboratory of Southeast Asia Biodiversity Conservation MenglaYunnan666303China Nepal Zoological Society Kathmandu44600Nepal Central Department of Zoology Institute of Science and TechnologyTribhuvan UniversityKathmandu44600Nepal Faculty of Forestry Agriculture and Forestry UniversityHetaudaMakwanpur44107Nepal IUCN SSC Bird Red List Authority Rue Mauverney1196GlandSwitzerland Mithila Wildlife Trust JanakpurdhamDhanusa45600Nepal Zoological Society of London-Nepal Office Kathmandu44600Nepal Institute of Land Water and SocietySchool of Environmental SciencesCharles Sturt UniversityAlbury-WodongaAustralia Shivapuri-Nagarjun National Park Department of National Parks and Wildlife ConservationKathmanduNepal

Climate change and land use change pose a threat to the world’s biodiversity and have significant impacts on the geographic distribution and composition of many bird species,but little is known about how they affect threatened large-sized waterbird species that rely on agricultural *** address this gap,we investigated how climate and land use changes influence the distribution and nesting habitats of the globally vulnerable Lesser Adjutant(Leptoptilos javanicus) in *** 2012 and 2023,we collected distribution data from 24 districts and nesting site information from 18 *** a nation-wide breeding survey conducted in 2020,we documented a total of 581 fledglings from 346 nests in 109 *** ensemble model predicted a current potential distribution of 15%(21,637 km2) and a potential nesting habitat of 13%(19,651 km2) for the species in *** highest predicted current suitable distribution and nesting habitat was in Madhesh Province,while none was predicted in Karnali *** majority of this predicted distributional and nesting habitat falls on agricultural landscapes(>70%).Our model showed a likely range expansion of up to 15%(21,573 km2) for the distribution and up to 12%(17,482 km2) for the nesting habitat under SSP5-8.5 scenarios for the *** range expansion is expected to occur mainly within the current distribution and breeding range(Tarai and some regions of Siwalk),particularly in Lumbini and Sudurpashchim provinces,and extend to the northern portions(Siwalik and Mid-hill regions) in other ***,the current Protected Areas and Important Bird and Biodiversity Areas are inadequate for providing optimal habitats for the *** the model suggests range expansion,the use of such novel habitats is primarily contingent on the availability and protection of large-sized trees(particularly Bombax ceiba,observed in 65% of colonies) in agricultural regions where nesting ***,our research sugges

关键词： Agricultural landscapes Bombax ceiba Ensemble modeling Farmland bird IBA Nest site

Impact of ionizers on prevention of airborne infection in classroom

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Building Simulation 2023年第5期16卷 749-764页

作者： Chen Ren Fariborz Haghighat Zhuangbo Feng prashant Kumar Shi-Jie Cao School of Architecture Southeast University2 SipailouNanjing 210096China Energy and Environment Group Department of BuildingCivil and Environmental EngineeringConcordia UniversityMontrealH3G 1M8Canada Global Centre for Clean Air Research(GCARE) School of SustainabilityCivil&Environmental EngineeringFaculty of Engineering&Physical SciencesUniversity of SurreyGuildford GU27XHSurreyUK Institute for Sustainability University of SurreyGuildford GU27XHSurreyUK

Infectious diseases(e.g.,coronavirus disease 2019)dramatically impact human life,economy and social *** the low-cost and energy-saving approaches is essential in removing infectious virus particles from indoors,such as in *** application of air purification devices,such as negative ion generators(ionizers),gains popularity because of the favorable removal capacity for particles and the low operation ***,small and portable ionizers have potential disadvantages in the removal efficiency owing to the limited horizontal diffusion of negative *** study aims to investigate the layout strategy(number and location)of ionizers based on the energy-efficient natural ventilation in the classroom to improve removal efficiency(negative ions to particles)and decrease infection *** infected students were considered in the *** simulations of negative ion and particle concentrations were performed and validated by the *** showed that as the number of ionizers was 4 and 5,the removal performance was largely improved by combining ionizer with natural *** with the scenario without an ionizer,the scenario with 5 ionizers largely increased the average removal efficiency from around 20%to 85%and decreased the average infection risk by 23%.The setup with 5 ionizers placed upstream of the classroom was determined as the optimal layout strategy,particularly when the location and number of the infected students were *** work can provide a guideline for applying ionizers to public buildings when natural ventilation is used.

关键词： classroom infection risk ionizer negative ions removal efficiency

Ayurveda and in silico Approach: A Challenging Proficient Confluence for Better Development of Effective Traditional Medicine Spotlighting Network Pharmacology

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Chinese Journal of Integrative Medicine 2023年第5期29卷 470-480页

作者： Rashmi Sahu prashant Kumar Gupta Amit Mishra Awanish Kumar Department of Balroga Shri NPA Govt.Ayurveda CollegeRaipur(492010)ChhattisgarhIndia Ayurinformatics Lab Department of KaumarabhrityaAll India Institute of AyurvedaSarita ViharNew Delhi(110076)India Cellular and Molecular Neurobiology Unit Indian Institute of TechnologyJodhpur(342037)RajasthanIndia Department of Biotechnology National Institute of TechnologyRaipur(492010)ChhattisgarhIndia

Coalescence of traditional medicine Ayurveda and in silico technology is a rigor for supplementary development of future-ready effective traditional medicine. Ayurveda is a popular traditional medicine in South Asia, emanating worldwide for the treatment of metabolic disorders and chronic illness. Techniques of in silico biology are not much explored for the investigation of a variety of bioactive phytochemicals of Ayurvedic herbs. Drug repurposing, reverse pharmacology, and polypharmacology in Ayurveda are areas in silico explorations that are needed to understand the rich repertoire of herbs, minerals, herbo-minerals, and assorted Ayurvedic formulations. This review emphasizes exploring the concept of Ayurveda with in silico approaches and the need for Ayurinformatics studies. It also provides an overview of in silico studies done on phytoconstituents of some important Ayurvedic plants, the utility of in silico studies in Ayurvedic phytoconstituents/formulations, limitations/challenges, and prospects of in silico studies in Ayurveda. This article discusses the convergence of in silico work, especially in the least explored field of Ayurveda. The focused coalesce of these two domains could present a predictive combinatorial platform to enhance translational research magnitude. In nutshell, it could provide new insight into an Ayurvedic drug discovery involving an in silico approach that could not only alleviate the process of traditional medicine research but also enhance its effectiveness in addressing health care.

关键词： Ayurveda in silico approach conﬂuence challenge effective therapeutics

Glacier-Glacial Lake Interactions and Glacial Lake Development in the Central Himalaya,India(1994–2017)

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Journal of Earth Science 2021年第6期32卷 1563-1574页

作者： Pratima Pandey Sheikh Nawaz Ali prashant Kumar Champati Ray Indian Institute of Remote Sensing DehradunIndia Birbal Sahni Institute of Palaeosciences LucknowIndia

Despite several regional glacier and glacier lake inventories, the relationship between receding glacier, glacial lake evolution(glacial-lake interactions) and their sensitivity to different forcing factors have not been properly understood yet. To better understand these processes, we used satellite images collected in 1994, 2015 and 2017 to monitor the spatially-explicit evolution of glacial lakes and glacier changes. The results show a total of 1 353 glacial lakes covering an area of 7.96 km;in the year 2015. Out of these, a total of 137 glacial lakes having an area of >0.01 km;and located within 2 km periphery of mother glacier have been selected for the monitoring of spatial development between 1994 and 2017. We found an increase in the total lake area from ~4.9 to ~7.73 km;between 1994 and 2017,corresponding to an overall expansion of ~57%. The total area covered by the glaciers associated with these lakes reduced from ~365 km;in 1994 to ~358 km^(2) in 2017, accounting for a glacier loss of ~7 km^(2) and corresponding to ~1.92% reduction. Our study results are in agreement with global glacier behavior, revealing a rapid glacier recession and accelerated glacial lake expansion under an unprecedented climate change scenario. In addition, the results suggest a significant reduction in the glacier area and a close relationship between the glacier melting and lake changes.

关键词： glacial lake expansion glacier change glacier-lake interaction Central Himalaya climate

Energy Optimization of Savonius Vertical Axis Wind Turbine

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Journal of Electronic Science and Technology 2015年第4期13卷 379-383页

作者： Abdul Qadir Versiani Sibi Chacko prashant Kumar Soori the School of Engineering & Physical Sciences at Heriot Watt University Dubai Campus

This paper reports a wind-powered water pumping system implemented in rural side of Pakistan. The design methodology presented in this paper shah enhance the efficiency of the existing Savonius turbine＇s performance by modifying it aerodynamically. Blades with different twist angles are designed in Solid Edge and analyzed using computational fluid dynamics （CFD） with ANSYS FLUENT software. Static and rotational analyses are performed to get optimized twist angle and results are highlighted. The performances of the turbine in both static and rotational analyses are compared.

关键词： Computational fluid dynamics,rotational static turbine.

COVID-19 and the liver: What do we know so far?

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World Journal of Hepatology 2021年第5期13卷 522-532页

作者： prashant Nasa George Alexander Department of Critical Care Medicine NMC Specialty HospitalDubai 7832United Arab Emirates Department of Gastroenterology Mediclinic Welcare HospitalDubai 0000United Arab Emirates Department of Gastroenterology Mediclinic DeiraDubai 0000United Arab Emirates

The coronavirus disease 2019(COVID-19)pandemic has caused unprecedented pressure on public health and *** pandemic surge and resultant lockdown have affected the standard-of-care of many medical conditions and *** initial uncertainty and fear of cross transmission of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)have changed the routine management of patients with pre-existing liver diseases,hepatocellular carcinoma,and patients either listed for or received a liver ***-19 is best described as a multisystem disease caused by SARS-CoV-2,and it can cause acute liver injury or decompensation of the pre-existing liver *** has been considerable research on the pathophysiology,infection transmission,and treatment of COVID-19 in the last few *** pathogenesis of liver involvement in COVID-19 includes viral cytotoxicity,the secondary effect of immune dysregulation,hypoxia resulting from respiratory failure,ischemic damage caused by vascular endotheliitis,congestion because of right heart failure,or drug-induced liver *** with chronic liver diseases,cirrhosis,and hepatocellular carcinoma are at high risk for severe COVID-19 and *** phase Ⅲ trials of recently approved vaccines for SARS-CoV-2 did not include enough patients with pre-existing liver diseases and excluded immunocompromised patients or those on *** article reviews the currently published research on the effect of COVID-19 on the liver and the management of patients with pre-existing liver disease,including SARS-CoV-2 vaccines.

关键词： COVID-19 Chronic liver disease SARS-CoV-2 Severe acute respiratory syndrome coronavirus Liver transplant Liver and SARS-CoV-2 vaccines SARS-CoV-2 induced liver injury

Worldwide trends in the scientific production of literature on traceability in food safety:A bibliometric analysis

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Artificial Intelligence in Agriculture 2021年第1期5卷 252-261页

作者： Aditya Sinha prashant Priyadarshi Mani Bhushan Dharmendra Debbarma Department of Extension Education Bihar Agricultural CollegeBihar Agricultural UniversitySabourBhagalpurBihar 813210India Department of Computer Science and Enginnering National Institute of TechnologyPatnaBihar 800005India Department of Extension Education Bhola Paswan Shastri Agricultural CollegeBihar Agricultural UniversitySabourBhagalpurBihar 813210India Dept.of Agricultural Extension College of AgricultureTripuraLembucherraWest Tripura 799210India

Food traceability is an important aspect of the food safety supply chain to ensure efficient tracking of produce to check contamination and other foodborne *** health and nutrition response after the Covid-19 pandemic requires a robust and diverse food supply chain in which traceability could play a major *** it is an emerging field of study with growing interest in the technological front,it is important to study the scientific trend and research *** study provides an important insight into the food safety value chain response towardsmodern food safetymanagement systems through scientometric *** databasewas used to retrieve the documents from the year 1992–*** research papers and conference paperswere only *** software was used to carry out the scientometric *** distribution and growth trend of documents,country-level distribution of publications,the relationship between authors and co-authors,etc.,were *** intensity of publications from different countries and the collaborations was analyzed using bibliometrix *** year-wise research publication showed a rapid increase in the researchers conducted on traceability systems to enhance food safety from 2014 onwards,mainly from the USA and ***,the research appeared to be in the developing phase compared to other technology implementation and automation advancements.

关键词： Scientometric analysis Food safety Traceability Publications Technology

TSKARNA-norm Adaption Based NLMS with Optimized Fractional Order PID Controller Gains for Voltage Power Quality

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Chinese Journal of Electrical Engineering 2023年第3期9卷 84-98页

作者： prashant Kumar Sabha Raj Arya Khyati D.Mistry Department of Electrical Engineering Sardar Vallabhbhai National Institute of TechnologySurat 395007India

The operation of a dynamic voltage restorer(DVR)is studied using a three-phase voltage source converter(VSC)-based topology to alleviate voltage anomalies from a polluted supply *** control algorithm used included two *** first is an adaptive Takagi-Sugeno-Kang(TSK)-based adaptive reweighted L1 norm adaption-based normalized least mean square(TSK-ARNA-NLMS)unit,which is proposed for the extraction of fundamental active and reactive components from the non-ideal supply and is further employed to generate the load reference voltage and switching pulse for the *** step size was evaluated using the proposed TSK-ARNA-NLMS controller,and the TSK unit was optimized by integration with the marine predator algorithm(MPA)for a faster convergence *** second,a fractional-order PID controller(FOPID),was employed for AC-and DC-link voltage regulation and was approximated using the Oustaloup *** FOPID()PI Dγμprovides more freedom for tuning the settling time,rise time,and *** FOPID coefficients(Ki,Kd,Kp,γ,andμ)were optimized by employing an advanced ant lion optimization(ALO)meta-heuristics technique to minimize the performance index,namely,the integral time absolute error(ITAE)and assess the accuracy of *** DVR performance was validated under dynamic-and steady-state conditions.

关键词： Takagi-Sugeno-Kang(TSK) ARNA-NLMS FOPID-ALO unbalances gain optimization approximation Oustaloup technique