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Review of preventive and constructive measures for coal mine explosions:An Indian perspective

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International Journal of Mining Science and Technology 2022年第3期32卷 471-485页

作者： Santosh Kumar Ray Asfar Mobin Khan Niroj Kumar Mohalik Debashish Mishra somu mandal Jai Krishna Pandey CSIR-Central Institute of Mining and Fuel Research Barwa RoadDhanbad 826015India Academy of Scientific and Innovative Research(AcSIR) Ghaziabad 201002India

Firedamp and coal dust explosion constitute a lion’s share in mine accidents in a global mining *** paper reports a list of mine explosion disasters since last two decades,a critical review of the different prevention and constructive measures,and its recent development to avoid firedamp and coal dust *** legislation in core coal-producing countries,***,USA,Australia,South Africa,and India related to firedamp and coal dust explosion are critically *** occurred due to explosion after Nationalisation of Coal Mines(1973)in India are *** and constructive measures adopted in India are critically analysed with respect to the global mining *** like methane credit concept,classification of mines/seams with respect to explosion risk zone,deflagration index;installation of automatic fire warning devices,canopy air curtain technology,explosion-prevention measures,such as fire-retardant materials,inhibitors,extinguishing agent,dust suppressor,and active explosion barrier are discussed in detail to avoid explosion and thereby adhering to zero accident policy due to coal mine explosion.

关键词： Firedamp explosion Coal dust explosion Preventive measures Constructive measures Legislation

Evaluation of building energy demand forecast models using multi-attribute decision making approach

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Energy and Built Environment 2024年第3期5卷 480-491页

作者： Nivethitha somu Anupama Kowli Department of Electrical Engineering Indian Institute of Technology-BombayMumbaiMaharashtra 400076India

With the existence of several conventional and advanced building thermal energy demand forecast models to improve the energy efficiency of buildings,it is hard to find an appropriate,convenient,and efficient *** based on statistical indexes(MAE,RMSE,MAPE,etc.)that characterize the accuracy of the forecasts do not help in the identification of the efficient building thermal energy demand forecast tool since they do not reflect the efforts entailed in implementation of the forecast model,i.e.,data collection to production/use ***,this work presents a Gini Index based Measurement of Alternatives and Ranking according to COmpromise Solution(GI-MARCOS),a hybrid Multi Attribute Decision Making(MADM)approach for the identification of the most efficient building energy demand forecast ***-MARCOS employs(i)GI based objective weight method:assigns meaningful objective weights to the attributes in four phases(1:pre-processing,2:implementation,3:post-processing,and 4:use phase)thereby avoiding unnecessary biases in the expert’s opinion on weights and applicable to domains where there is a lack of domain expertise,and(ii)MARCOS:provides a robust and reliable ranking of alternatives in a dynamic environment.A case study with three alternatives evaluated over three to six attributes in four phases of implementation(pre-processing,implementation,post-processing and use)reveals that the use of GI-MARCOS improved the accuracy of alternatives MLR and BM by 6%and 13%,***,additional validations state that(i)MLR performs best in Phase 1 and 2,while ANN performs best in Phase 3 and 4 with BM providing a mediocre performance in all four phases,(ii)sensitivity analysis:provides robust ranking with interchange of weights across phases and attributes,and(iii)rank correlation:ranks produce by GI-MARCOS has a high correlation with GRA(0.999),COPRAS(0.9786),and ARAS(0.9775).

关键词： Building energy demand Multi-attribute decision making Objective weights Forecast models Sensitivity analysis

Studies on the effect of weld defect on the fatigue behavior of welded structures

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China Welding 2018年第1期27卷 53-59页

作者： Ramu Murugan Prabhu Raja Venugobal Thyla Pudukkarai Ramaswami Sathiskumar Jothi somu Chinnusamy Department of Mechanical Engineering Amrita School of Engineering Department of Mechanical Engineering PSG College of Technology College of Engineering Swansea University

Structural integrity isstated as the science and technology of margin between safety and disaster. Systematic prediction of structural integrity of critical structures such ascombustion chambers,pressure vessels,nuclear reactor components,boilers etc.,ensures the human safety,environmental protection,and the economical *** present work aims at prediction of fatigue behaviour of symmetric structures like pressure vessels in the presence of common welding defects such as lack of fusion( LOF),lack of penetration( LOP) and porosity.A ring type specimen which replicates the stress pattern in thepressure vessel is considered for the study of severity of weld imperfections. Initial dimensions of weld defects are arrived by performing NDT *** growth analysis is carried out to determine the remaining life of the welded joint with defects.

关键词： welding defects fatigue fracture mechanics crack growth fatigue life

Nano zinc, an alternative to conventional zinc as animal feed supplement:A review

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Animal Nutrition 2016年第3期2卷 134-141页

作者： Partha S.Swain somu B.N.Rao Duraisamy Rajendran George Dominic Sellappan Selvaraju ICAR National Dairy Research Institute ICAR-National Dairy Research Institute National Institute of Animal Nutrition and Physiology

The uniqueness of Zn is that, it is the second most abundant trace element in the animal body but can't be stored in the body, thus regular dietary intake is required. Zinc oxide(ZnO) nanoparticles(NP) particles are being extensively used in paints, skin lotions pigments, food, electronics appliances, biological and pharmaceutical applications and many more. Zinc oxide nanoparticles are the specially prepared mineral salt having particle size of 1 to 100 nm. It promotes growth can act as antibacterial agent,modulates the immunity and reproduction of the animals. Both in lower and higher doses of specifications it has exhibited a variety of effects on animal performances. Apart from being highly bioavailable, reports have already pointed out the growth promoting, antibacterial, immuno-modulatory and many more effects of nano zinc(nZn). These can be used at lower doses and can provide better result than the conventional Zn sources and indirectly prevents environmental contamination also. The toxicological studies provide mixed results in animal models. Studies been undertaken in diversified animal species and encouraging effects have been reported with nZn supplementation. However, there is a need to optimize the dose and duration of ZnO NP supplementation for human and livestock,depending on its biological effects. Actual bioavailability of ZnO NP in livestock is still to be worked *** this review we have attempted to summarize, conclude the beneficial effects of nZnO and its possible usage as mineral supplement to different categories of human and livestock.

关键词： Antibacterial agent Feed additive Human Livestock Nano zinc

Effect of Different Diet Level on the Physiological Adaptability, Biochemical and Endocrine Responses and Relative Hepatic HSP70 and HSP90 Genes Expression in Osmanabadi Kids

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Journal of Agricultural Science and Technology(A) 2015年第9期5卷 755-769页

作者： Veerasamy Sejian Madiajagan Bagath Sivashanmugam Parthipan Gundallahalli Bayyappa Manjunathareddy Sellappan- Selvaraju Santanahalli Siddalingappa Archana Nira Manik Soren somu Bala Nageswara Rao Kandalam Giridhar Janivara Parameswaraiah Ravindra Raghavendra Bhatta Animal Physiology Division ICAR-National Institute of Animal Nutrition and Physiology Adugodi Bengaluru 560030 India Animal Nutrition Division ICAR-National Institute of Animal Nutrition and Physiology Adugodi Bengaluru 560030 lndia ICAR-National Institute of Veterinary Epidemiology and Disease Informatics Yelahanka Bengaluru 560064 India Knowledge Management and Biostatistics Section ICAR-National Institute of Animal Nutrition and Physiology AdugodiBengaluru 560030 lndia ICAR-National Institute of Animal Nutrition and Physiology Adugodi Bengaluru 560030 India

The study was conducted to investigate the impact of different levels of feed on the adaptive capability based on physiological, blood biochemical, endocrine and molecular mechanisms in growing Osmanabadi kids. The primary objective of the study was to identify if HSP70 and HSP90 can be a nutritional stress marker for goat. The study was conducted for a period of two months. The animals were randomly divided into three groups as GI （n = 6; ad libitum feeding）, GII （n = 6; 20% less than ad libitum） and GIII （n = 6; 40% less than ad libitum）. The animals were fed with feed consisting of 50% roughage and 50% concentrate. Blood collection was carried out at fortnightly intervals. Body weights were recorded at weekly interval. Physiological responses, biochemical responses, plasma tri-iodo-thyronine （T3）, thyroxin （＇1＂4） and cortisol were recorded at fortnightly interval. At the end of study period, only GI and Gill animals were slaughtered and different organs were collected for histopathological studies as well as for hepatic HSP70 and HSP90 mRNA transcript expression. Body weight recorded showed significant （P 〈 0.01） differences between the groups. Physiological responses showed significant （P 〈 0.01） variation among the groups. Among the biochemical parameters, plasma glucose and total plasma protein and globulin showed significant （P 〈 0.01） differences between the groups. Plasma T3 （P 〈 0.01）, T4 （P 〈 0.01） and cortisol （P 〈 0.05） also differed significantly between the groups. The relative hepatic HSP70 mRNA transcript expression was significantly （P 〈 0.05） higher in Gill （2.8 fold） as compared to GI （1 fold） kids. Similar result was obtained for hepatic HSP90 mRNA transcript expression. From the results, it can be concluded that Osmanabadi kids possessed the ability to alter their adaptive mechanisms to maintain homeostasis. Further, the study revealed the significance of providing the optimum nutrition for these animals to adapt to existing environmental condi

关键词： Adaptation cortisol goat HSP70 HSP90 nutritional stress.