1,405 research outputs found
A Review Study of the Thermo Physical Properties of PCM with Dispersion of Nano Particles
No full textIn this article, a new sort of nanofluid phase change materials PCMs is developed by suspending a small amount of BeO nanoparticles in solution of wax. Its thermal conductivities, super cooling degree, latent heat, specific heat, and rheological behaviours of the nanofluids PCMs have investigated. A rectangular duct designed and numerical studies were performed to reveal the effects of molten PCM thermo physical properties on heat and exergy storage performance of latent heat storage LHS unit. The range analysis, regression analysis and optimization were conducted. The PCM selection criteria were established. The results show that for short time LHS system, the order of PCM properties effects on heat storage performance is melting temperature, thermal conductivity, specific heat, density and melting enthalpy successively. PCM with lower melting temperature, higher thermal conductivity and specific heat is beneficial to improve the heat storage rate and heat storage quality. For long time heat storage system, the order of PCM properties effects on heat storage performance is density, melting enthalpy, specific heat, melting temperature and thermal conductivity successively. PCM with higher density, melting enthalpy and specific heat can both improve the heat storage rate and heat storage quality. Vivek Baghel | Yogesh Yadav "A Review - Study of the Thermo-Physical Properties of PCM with Dispersion of Nano Particles" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: https://www.ijtsrd.com/papers/ijtsrd14236.pd
Formal Development of a Total Order Broadcast for Distributed Transactions using Event-B
No full textAbstract. In a replicated database system, copies of the database are kept across several sites for fault-tolerance and availability. Data access in such systems is usually done within a transactional framework. A read-only transaction accesses data locally and an update transaction modifies the database at all sites. Total order broadcast primitives have been proposed to support transactions and allow fault-tolerant cooperation between the sites in a distributed system. In this paper, we identify and analyze the problem of formation of deadlocks among conflicting update transactions due to race conditions and outline how a system of total order broadcast prevents deadlocks and transaction failures. Later we outline how a refinement based approach with Event-B can be used for formal development of the models of total order broadcast. In this approach we begin with the abstract model of a total order broadcast and verify that the required ordering properties are preserved by the system. total order can correctly be implemented by using a notion of sequence number. This technique requires us to discharge proof obligations due to consistency and refinement checking. To discharge the proof obligations we are required to discover invariants that describes the relationship between the abstract total order and the underlying mechanism.
First person – Shweta Yadav
No full textABSTRACT
First Person is a series of interviews with the first authors of a selection of papers published in Journal of Cell Science, helping early-career researchers promote themselves alongside their papers. Shweta Yadav is the first author on ‘RDGBα localization and function at membrane contact sites is regulated by FFAT–VAP interactions’, published in Journal of Cell Science. Shweta is a post-doctoral associate in the laboratory of Prof. Juan Botas at Baylor College of Medicine, Texas, USA, investigating neurodegenerative diseases.</jats:p
The hired farm labor market: some recent evidence from Oregon
No full textT.M. Hammonds, R. Yadav, and C. Vathana.This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references (pages 22-23).Mode of access: Internet from the Oregon Government Publications Collection.Text in English
“Discovery of the Wave-Edge Rectangle (WER) and its Area Formula”
No full textTitle: The Wave-Edge Rectangle (WER): A Newly Identified Geometric Structure and Its Area Formula
Author: Yadvendra Singh Yadav
Date: 2 December 2025
Summary:
I discovered a new geometric shape called the Wave-Edge Rectangle (WER), formed by replacing all four straight sides of a rectangle with equal semicircular arcs. I derived a general area formula:
=2(4+(+)
“To Assess the Clinical Profile and Risk Factors Associated with Myocardial Infarction In Young Adults”
No full textBackground: The Global Burden of Diseases (GBD) study reported the estimated mortality from CAD in India at 1.6 million in the year 2000. It has been predicted that by the year 2020 there will be an increase by almost 75% in the global CVD burden. Acute MI in young adults is characterized by the presence of multiple risk factors which tend to be additive in influencing morbidity and mortality. A contributory factor, which may explain the abnormalities in lipid profile of Indians, is the high risk atherosclerotic diet, which promotes over nutrition, obesity and diabetes.
Methods: It is an observational study done at tertiary care center. In our study we studied 55 consecutive patients suffered with acute myocardial Infarction (AMI) between age group 15-45 years, fulfilling inclusion criteria. We assessed clinical profile and their risk factors.
Results:
Mean age of acute myocardial infarction was 40.6 years. Ajority of the patients were male (94.5%) and between the age group of 41-45 years (50.9%), chest pain was commonest presentation. Smoking was the most common risk factor (61.8%), followed raised homocysteine level (45.5%). Family history of Premature CAD was presents in significant number of individuals (36.4%). Obesity with raised BMI was found in 10.9% patients. Incidence of DM was 18.2%, hypertension was seen in 10.9%cases. Abnormalities in lipidprofile were seen 21.8% patients. Hyperuricemia was found in 31 %, AB positive blood group was most common and was presents in 34.5%. In most individuals single blood vessel was involved (76.4%) with good left ventricular (LV) function (49%) and over all prognoses was good in patients with door to stent time less than 60 min. The coronary arteries involved in these cases were LAD in 36.4%, LCX in 20% and RCA in 20%.
Conclusion: In young MI cases conventional risk factors like diabetes mellitus, hypertension play less important role as compared to old individuals. Smoking and novel emerging risk factors like hyperhomocysteinemia, protein C & S deficiency play much prominent role in young patients with MI
Correction to: Studies on H2-Assisted Liquefied Petroleum Gas Reduction of NO over Ag/Al2O3 Catalyst
No full textCorrection to: Bulletin of Chemical Reaction Engineering & Catalysis (2018), 13 (2): 227-235 (doi:10.9767/bcrec.13.2.1307.227-235)
An error appeared in Corresponding Author in a paper entitled “Studies on H2-Assisted Liquefied Petroleum Gas Reduction of NO over Ag/Al2O3 Catalyst” published in Bulletin of Chemical Reaction Engineering & Catalysis. The Corresponding Author is corrected to be:
* Corresponding Authors.
Tel: +919415268192. Email: [email protected] (R. Prasad)
Tel: +917505072607. Email: [email protected] (D. Yadav)
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The original article can be found online at: https://doi.org/10.9767/bcrec.13.2.1307.227-235
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Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
How to Cite: Singh, P., Yadav, D., Thakur, P., Pandey, J., Prasad, R. (2020). Correction to: Studies on H2-Assisted Liquefied Petroleum Gas Reduction of NO over Ag/Al2O3 Catalyst. Bulletin of Chemical Reaction Engineering & Catalysis, 15 (2): 603-603 (doi:10.9767/bcrec.15.2.7659.603-603)
Permalink/DOI: https://doi.org/10.9767/bcrec.15.2.7659.603-60
RETRACTED ARTICLE: Psychological predictors behind the intention to drink and drive among female drivers: Application of extended theory of planned behavior
No full textWe, the Editor and Publisher of Traffic Injury Prevention, have retracted the following article: Ankit Kumar Yadav. Psychological predictors behind the intention to drink and drive among female drivers: Application of extended theory of planned behavior. Traffic Injury Prevention. 2020. https://doi.org/10.1080/15389588.2019.1703961. The author has requested the retraction of his article due to an error in one of the collected psychological measures. During data extraction, the responses for ‘attitude’ and ‘intention’ measures were switched and may have influenced the findings from the developed regression model and its results. As a result, the Editor and Publisher have agreed to retract the article in full. We have investigated and have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.</p
Helical and linear morphotypes ofArthrospirasp. PCC 8005 display genomicdifferences and respond differently to 60Co gamma irradiation
No full textArthrospira are multicellular cyanobacteria that typically reside in alkaline lakes of (sub)tropical regions and are mass cultivated around the globe in a variety of outdoor facilities and photobioreactors for their high nutritional, pharmaceutical and clinical value. Arthrospira sp. strain PCC 8005 was selected by the European Space Agency as an oxygen producer and nutritional end-product in a bioregenerative life support system for long-haul missions. Being highly resistant to ionizing radiation, it is also an ideal candidate for other space applications such as in situ resource utilization and terraformation. During long-term strain maintenance involving continuous subculturing we noted an irreversible morphological change in PCC 8005 subcultures i.e. from only helical to only straight trichomes. These morphotypes displayed differences in growth rate, buoyancy and resistance to gamma radiation. We also found marked differences in antioxidant capacity, pigment content and trehalose concentration, while whole-genome comparison revealed a difference of 168 SNPs, 48 indels and four large insertions affecting, in total, 41 coding regions across both genomes. Although nine of these regions encoded proteins with a known function, no conclusive genotype-phenotype associations could be determined. Nonetheless, genomic changes within the gvpC gene (encoding a gas vesicle protein) and within the regulatory region of the psbD gene (encoding the D2 protein of PSII) provided some clues for the observed differences in buoyancy and growth.This work was in part financed through a PhD grant for Anu Yadav provided by SCK_CEN and supported by a collaborative agreement on scientific cooperation between the Research Foundation - Flanders and the Polish Academy of Sciences (2016-2018) (contract FWO-PAN 52162 NB, file VS.082.16N).Janssen, PJ (reprint author), Belgian Nucl Res Ctr SCK CEN, Microbiol Unit, Interdisciplinary Biosci, B-2400 Mol, Belgium.
[email protected]
Research review: Globally distributed requirements engineering and agility
No full textYadav, V ORCiD: 0000-0001-5237-1186Getting requirements right is considered the most important and difficult part of the software development process. As organizations and stakeholders become more globally distributed, getting requirements right will pose a greater challenge. Today, organizations are offered a sophisticated array of multimedia meeting systems with video, audio and computer support for remotely specifying requirements. In the context of present day’s global workforce scenario, distributed requirements engineering is now being explored by researchers as well as industry to build an understanding of the dynamics of this highly interactive phase in a globally distributed context. Accordingly, this paper addresses the timely need of reviewing the literature on globally distributed requirements engineering. Findings highlight paucity of literature in this area. Additionally, the paper presents an innovative approach to globally distributed requirements engineering by reviewing the literature on the applicability of agile development approach in a globally distributed setting. Contributing to academic and practitioner literature, the author discusses emerging directions for future research in this area
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