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Offshore high-grade limemud resources of west coast of India:Economic potential and industrial applications

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Deep Underground Science and Engineering 2024年第2期3卷 163-170页

作者： Anil kumar Adukadukkam Rachna Pillai Mamatha Puthiyathara Kanakamma Marine&Coastal Survey Division Geological Survey of IndiaSalt LakeKolkataWest BengalIndia

Limestone is one of the essential raw materials in the cement,paint,steel,ceramic,glass,chemical,pharmaceutical,paper,and fertilizer *** India,only 8%of the limestone resources are placed under the reserve category,of which 97%is of cement ***,India depends on imports to bridge the demand‐supply gap of steel,blast furnace,and chemical‐grade *** of Geological Survey of India(GSI)to locate alternate sources for limestone led to the discovery of enormous quantities of carbonate minerals called limemud from the continental shelf margin of the west coast of *** carried out systematic studies to explore the nature of the disposition,quality,quantity,and suitability of the offshore limemud for various industrial applications.A preliminary estimate of resources using high‐resolution subbottom profiling and sediment core sample studies established the occurrence of more than 172 billion tonnes of high‐grade(The content of CaCO3 is greater than 80 wt%)limemud in 0.4–28.0m thick stratified sediment layers spread over an area of 18000 ***,physical,mineralogical,beneficiation,and agglomeration studies found the offshore limemud as a potential replacement for limestone in the cement,filler,blast furnace,steel melting shop,lime production,paint,and Grade‐I steel *** assessment of mining and transportation costs indicates that the offshore limemud(USD 5–6/ton)is more cost‐effective than that imported from other countries(USD16‐18/ton).With several advantageous factors like low impurity,mode of occurrence in overburden‐free stratified form,fine‐grained slurry nature,and shallow water depth,sustainable mining of offshore limemud could be a future reality with controllable technological,economic,and environmental challenges.

关键词： beneficiation industrial grade offshore limemud west coast of India

Transcriptomic and pathological profiling of a new congenic mouse model with Lepr mutation:Evaluating susceptibility to the development of obesity and NAFLD

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Genes & Diseases 2024年第3期11卷 34-38页

作者： MJ Mahesh kumar Shailendra Arindkar Masum Saini Perumal Nagarajan National Institute of Immunology New Delhi 100067India Center for Cellular and Molecular Biology Hyderabad 500007India Regional Center for Biotechnology Faridabad 121001India

Non-alcoholic fatty liver disease(NAFLD)and type 2 diabetes mellitus(T2DM)are two disease conditions for which obesity is a risk factor.^(1)Due to the close relationship between the three pathologies,researchers frequently use the same mouse models to identify the underlying processes of obesity,NAFLD,and *** instance,leptin(Lep)-null(ob/ob)and leptin receptor(Lepr)-deficient(db/db)mice spontaneously develop NAFLD and show different phenotypes of extreme obesity and diabetes,respectively.

关键词： obesity NAFLD Lep

Earliest megafossils of scandent calamoid palms from the Deccan Intertrappean Beds of Central India and their paleobiogeographic implications

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Journal of Palaeogeography 2024年第3期13卷 509-527页

作者： Sanchita kumar Kaustav Roy Robert A.Spicer Mahasin Ali Khan Palaeobotany and Palynology Laboratory Department of BotanySidho-Kanho-Birsha UniversityRanchi RoadPurulia-723104India CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303Yunnan ProvinceChina School of Environment Earth and Ecosystem SciencesThe Open UniversityMilton KeynesMK76AAUK State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China

Two well-preserved petrified palm stems from the latest Maastrichtian(Late Cretaceous) to earliest Danian(Early Paleocene) sediments of the Deccan Intertrappean Beds of Madhya Pradesh, Central India are described. Their significant anatomical characteristics include a Calamus-type general stem pattern,the presence of well-preserved fibrovascular bundles(fvbs) with two wide metaxylem vessel elements(230 μm-250 μm) and one phloem strand, uniform density of fvbs, lack of continuity between protoxylem and metaxylem vessel elements, and an absence of centrifugal differentiation of sclerenchymatous fibrous *** features reveal a close resemblance to those of extant genera of scandent Calamoideae. The permineralized stems are described as a new species namely, Palmoxylon calamoides kumar, Roy et Khan sp. *** fossils represent the oldest reliable fossil records of this family, supporting their Gondwanan origin, their importance in tracing their migration pathways from India to Europe and other continents after the docking of the Indian subcontinent with Eurasia during the Paleocene, and an “Out-of-India” dispersal hypothesis. Today the subfamily Calamoideae is disjunctly occurred in Africa, Asia, Australia, Europe, and South America, but the poor deep-time fossil record of this subfamily with a small number of Cenozoic fossils makes hypotheses concerning its origin and dispersal difficult to evaluate. The present study has significant implications for the origin and migration of this subfamily and the paleoclimate.

关键词： Scandent Calamoideae Stem anatomy K-Pg Paleobiogeography Paleoclimate Central India

Current status of the biliary tract malformation

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World Journal of Clinical Pediatrics 2024年第2期13卷 100-103页

作者： Krishna kumar Govindarajan Department of Pediatric Surgery JIPMERPondicherryPondicherry 605006India

The choledochal cyst(CC)can be better termed as biliary tract malformation because of the close association of embryology and etiology in the causation of *** to Babbitt's postulation of reflux,damage and dilatation,reflux was not demonstrable as the causative factor in all varieties of *** pressure in the biliary system,otherwise termed ductal hypertension,is put forth as an alternative to explain the evolution of *** forme fruste type,which does not find a place in the standard classification,typifies the ductal hypertension *** a closer,in-depth review would be able to highlight this apt terminology of biliary tract malformation.

关键词： Choledochal cyst Biliary tract Biliary dilatation Ductal hypertension Common channel Pancreatobiliary malunion

Experimental investigation on effective aerosol scavenging using different spray configurations with pre-injection of water mist for Fukushima Daiichi decommissioning

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Nuclear Science and Techniques 2024年第5期35卷 154-172页

作者： Rui-Cong Xu Avadhesh kumar Sharma Erdal Ozdemir Shuichiro Miwa Shunichi Suzuki Department of Nuclear Engineering and Management The University of Tokyo7‑3‑1 HongoBunkyo‑KuTokyo 113‑8656Japan Nuclear Professional School The University of Tokyo2‑2

During the decommissioning of the Fukushima Daiichi nuclear power plant,it is important to consider the retrieval of resolidified debris both in air and underwater *** the subsequent retrieval of debris from the reactor building,the resolidified debris must be cut into smaller pieces using various cutting *** the cutting process,aerosol particles are expected to be generated at the submicron *** has been noted that such aerosols sizing within the Greenfield gap(0.1-1μm)are difficult to remove effectively using traditional spraying ***,to improve the aerosol removal efficiency of the spray system,a new aerosol agglomeration method was recently proposed,which involves injecting water mist to enlarge the sizes of the aerosol particles before removing them using water *** this study,a series of experiments were performed to clarify the proper spray configurations for effective aerosol scavenging and to improve the performance of the water *** experimental results showed that the spray flow rate and droplet characteristics are important factors for the aerosol-scavenging efficiency and performance of the water *** results obtained from this study will be helpful for the optimization of the spray system design for effective aerosol scavenging during the decommissioning of the Fukushima Daiichi plant.

关键词： Fukushima Daiichi decommissioning Aerosol scavenging Multiphase flow Spray system Aerosol-mist agglomeration

Microstructural, wettability, and corrosion behaviour of TiO_(2) thin film sputtered on aluminium

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Journal of Central South University 2024年第7期31卷 2210-2224页

作者： Rajeev VERMA Vijay kumar Saurabh KANGO Amindra KHILLA Rajeev GUPTA Department of Industrial and Production Engineering Dr B R Ambedkar National Institute of Technology JalandharJalandhar-144008PunjabIndia Department of Mechanical Engineering Dr B R Ambedkar National Institute of Technology JalandharJalandhar-144008PunjabIndia Department of Physics School of EngineeringUniversity of Petroleum&Energy StudiesDehradun 248007UttarakhandIndia

The study investigated the application of radiofrequency(RF)-sputtered TiO2 coatings at various temperatures to enhance the hydrophobicity and corrosion resistance of Al6061 *** research aimed to establish a correlation between the coating process and the resulting surface *** roughness and wettability were quantified with a surface profilometer and ***,chemical boiling and salt spray corrosion tests were conducted to evaluate any topographical changes during these *** analysis further involved the use of field-emission scanning electron microscopy(FESEM),energy-dispersive spectroscopy(EDS),and X-ray diffraction(XRD)techniques to characterize the deposited *** findings indicated that the TiO2 coating applied at 500℃exhibited the highest water contact angle and superior corrosion resistance compared to other *** characterization confirmed that this specific TiO_(2) coating at 500℃ effectively delays corrosion due to its hydrophobic behavior,making it durable for industrial applications.

关键词： aluminium TiO_(2)coating radiofrequency-sputtering hydrophobic corrosion

Nutrition interventions and clinical outcomes of pregnant women with gestational diabetes mellitus: More than meets the eye

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World Journal of Diabetes 2024年第1期15卷 126-128页

作者： Sony Sinha Prateek Nishant Ranjeet kumar Sinha Arvind kumar Morya Ripunjay Prasad Department of Ophthalmology-Vitreo-Retina Neuro-Ophthalmology and OculoplastyAll India Institute of Medical SciencesPatnaPatna 801507BiharIndia Department of Ophthalmology ESIC Medical CollegePatnaPatna 801103BiharIndia Department of Community Medicine Patna Medical CollegePatna 800004BiharIndia Department of Ophthalmology All India Institute of Medical SciencesHyderabad 508126TelanganaIndia Department of Ophthalmology RP Eye InstituteDelhi 110001DelhiIndia

In the retrospective study by Luo et al regarding clinical outcomes in gestational diabetes mellitus(GDM),the results are statistically significant in favour of the benefits of individualized nutrition interventions enumerated *** study has provided important evidence to improve maternal and child health in the Asian *** methods,however,appear to have considerable limi-tations,wherein the time point of diagnosis of GDM,severity of GDM,selection bias,compliance to therapy,important maternal covariates,observable microvascular abnormalities and the confounding effect of added insulin have not been *** have provided suggestions to improve the external validity of the study,including the use of Equator Network reporting guidelines and inclusion of overweight and obese patients in future studies.

关键词： Glucose intolerance Hyperglycemia Obesity Pregnancy Research methodology

Assessing the role of forest resources in improving rural livelihoods in West Bengal of India

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Regional Sustainability 2024年第2期5卷 75-88页

作者： Soumen BISUI Pravat kumar SHIT Research Center for Natural and Applied Science Raja Narendra Lal Khan Women’s College(Autonomous)Vidyasagar UniversityMidnapore721102India Postgraduate Department of Geography Raja Narendra Lal Khan Women’s College(Autonomous)Vidyasagar UniversityMidnapore721102India

Forest resources play a vital role in supporting the livelihoods of rural communities residing in forest-rich *** India,a forest-rich country,a significant proportion of non-timber forest products(NTFPs)is consumed locally,supporting numerous rural communities relying on forests for essential resources,such as firewood,timber,and *** study focuses on two forest-dominant districts in West Bengal of India,namely,Jhargram District and Paschim Medinipur ***,this study aims to enhance the understanding of forest-dependent communities by comparing the standard of living among different village ***,we categorized villages into three classes based on the distance from home to forests,including inner villages,fringe villages,and outer *** focus group discussions and household surveys,we explored the sources of local economy,income sources of household,and reasons for economic diversification in different village *** study findings confirm that substantial variations existed in the income sources and the standard of living in these *** income varied dramatically among the three village classes,with inner villages having greater forest income than fringe villages and outer ***,households in outer villages depended on forests and engaged in diverse economic activities for their *** with inner and fringe villages,households in outer villages derived a significant portion of their income from *** discrepancy can be attributed to challenges,such as inadequate transportation,communication,and underdeveloped market chains in inner ***,these findings emphasize the need to develop sustainable forest management practices,create alternative income-generation opportunities,and improve infrastructure and market access in inner villages,as well as promote economic diversification in outer *** targeted policy measures,these forest-rich regions can achi

关键词： Non-timber forest products(NTFPs) Forest resources Standard of living index Livelihood dependency index Income sources India

Genes linked to obesity-related infertility:bridging the knowledge gap

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Reproductive and Developmental Medicine 2024年第2期8卷 121-129页

作者： Praveen kumar Chandra Sekar Ramakrishnan Veerabathiran Human Cytogenetics and Genomics Laboratory Faculty of Allied Health SciencesChettinad Academy of Research and EducationKelambakkamTamil Nadu 603103India

Genetic factors play a pivotal role in the complex relationship between obesity and *** article delves into the genetics of obesity-related infertility,focusing on the essential genes and mechanisms in both *** explored infertility factors in obese females,focusing on polycystic ovary syndrome(PCOS)and the influence of genes like insulin receptor(INSR),androgen receptor(AR),and follicle-stimulating hormone receptor(FSHR).Epigenetic changes are believed to contribute to PCOS-related *** impact of adipokines and inflammation on obesity-related infertility has been discussed,with genes such as fat mass and obesity(FTO)and melanocortin-4-receptor(MC4R)playing significant *** factors affecting sperm quality and function,including nuclear receptor subfamily 3 group C member 1(NR3C1)and methylenetetrahydrofolate reductase(MTHFR),have been investigated in obesity-related infertility in *** dysregulation influenced by genetic markers,such as leptin receptor(LEPR),tumor necrosis factor-alpha(TNF-α),and interleukin-6(IL-6),was also *** factors play a vital role in obesity-related infertility in both *** involved in metabolism,hormonal regulation,and inflammation contribute to the complex association between obesity and *** changes further complicate the *** these genetic mechanisms is essential to address obesity-related infertility and develop personalized interventions.

关键词： Obesity Infertility PCOS DNA methylation Epigenetics