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Development and performance characterization of a compact plasma focus based portable fast neutron generator

Plasma Science and Technology 2020年第11期22卷 127-135页

作者： rishi verma Ekansh MISHRA Prosenjit DHANG Basanta Kumar DAS Manraj MEENA Lakshman RONGALI Archana SHARMA Pulsed Power&Electromagnetics Division Bhabha Atomic Research Centre FacilityAtchutapuramVishakhapatnam 531011.India Homi Bhabha National Institute AnushaktinagarMumbai 400094India Raja Ramanna Centre for Advanced Technology Rajendra NagarIndore 452013India Variable Energy Cyclotron Centre BidhannagarKolkata 700064India

The design details and performance characterization results of a newly developed plasma focus based compact and portable system(0.5 m×0.5 m×1.2 m,weighing≈100 kg)that produces an average neutron yield of^2×10^8 neutrons/shot(of fast D-D neutrons with typical energy^2.45 Me V)at^1.8 k J energy discharge are *** the detailed analysis of the experimental characterization and simulation results of this system,it has been conclusively revealed that specifically in plasma focus devices with larger static inductance:(i)pinch current is a reliable and more valid neutron yield scaling parameter than peak current,(ii)the ratio of pinch/peak current improves as static inductance of the system reduces,(iii)the benign role of the higher static/pinch inductance ratio enables the supply of inductively stored energy in densely pinched plasma with a larger time constant and it is well depicted by the extended dip observed in the discharge current trace,(iv)there is the need to redefine existing index values of the pinch(Ipinch^4.7)and peak(Ipeak^3.9)currents in neutron yield scaling equations to higher values.

关键词： plasma focus neutrons time of flight pinch current peak current plasma pinch pseudospark switch

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Effect of Semecarpus anacardium fruits on reproductive function of male albino rats

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Asian Journal of Andrology 2003年第2期5卷 121-124页

作者： Arti Sharma Pramod Kumar verma V.P.Dixit Department of Zoology Raj Rishi Colloge A/war (Raj) 301001 IndiaReproductive Physiology Section Department of Zoology University of Rajasthan Jaipur-302 004 IndiaReproductive Physiology Section Department of Zoology University of Rajasthan Jaipur-302 004 India

Aim: To evaluate the effect of an ethanolic extract of Semecarpus anacardium fruits on spermatogenesis in albino rats. Methods: Male albino rats were fed with a 50 % ethanolic extract of Semecarpus anacardium fruit at 100 mg·***-1, 200 mg·kg-1·day-1 and 300 mg·kg-1·day-1 for 60 days. Fertility test was performed after 60 days of treatment. Sperm motility and density were observed in the cauda epididymis. Biochemical and histological analyses of the blood and reproductive organs were done. Recovery of fertility was followed to evaluate the reversibility of drug action. Results: S. anacardium fruit extract administration resulted in spermatogenic arrest in albino rats. The sperm motility and density was reduced significantly. The RBC and WBC counts, haemoglobin, haematocrit, blood sugar and urea were found to be within the normal range in the whole blood. The protein, cholesterol and glycogen in the testes and the fructose in the seminal vesicle were significantly decreased after the treatment. The fruit extract feeding caused marked reduction in the number of primary spermatocytes, secondary spermatocytes and spermatids. The number of mature Leydig cells was also decreased and degenerating cells increased proportionately. Conclusion: 5. anacardium fruit extract causes spermatogenic arrest in albino rats.

关键词： Semecarpus anacardium spermatogenesis androgen spermatocytes Leydig cells

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Gut microbiome supplementation as therapy for metabolic syndrome

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World Journal of Diabetes 2023年第10期14卷 1502-1513页

作者： Mc Anto Antony Aniqa Chowdhury Dinesh Edem rishi Raj Priyanshu Nain Mansi Joglekar Vipin verma Ravi Kant Department of Endocrinology Diabetes and MetabolismMedical University of South Carolina/AnMed CampusAndersonSC 29621United States Department of Endocrinology Diabetes and MetabolismUniversity of Arkansas for Medical SciencesLittle RockAK 72205United States Department of Endocrinology Diabetes and MetabolismPikeville Medical CenterPikevilleKY 41501United States Department of Graduate Medical Education Maulana Azad Medical CollegeDelhi 110002India Department of Internal Medicine Medical University of South Carolina/AnMed CampusAndersonSC 29621United States

The gut microbiome is defined as an ecological community of commensal symbiotic and pathogenic microorganisms that exist in our *** microbiome dysbiosis is a condition of dysregulated and disrupted intestinal bacterial homeostasis,and recent evidence has shown that dysbiosis is related to chronic inflammation,insulin resistance,cardiovascular diseases(CVD),type 2 diabetes mellitus(T2DM),and *** is well known that obesity,T2DM and CVD are caused or worsened by multiple factors like genetic predisposition,environmental factors,unhealthy high calorie diets,and sedentary ***,recent evidence from human and mouse models suggest that the gut microbiome is also an active player in the modulation of metabolic syndrome,a set of risk factors including obesity,hyperglycemia,and dyslipidemia that increase the risk for CVD,T2DM,and other *** research aims to identify treatments to increase the number of beneficial microbiota in the gut microbiome in order to modulate metabolic syndrome by reducing chronic inflammation and insulin *** is increasing interest in supplements,classified as prebiotics,probiotics,synbiotics,or postbiotics,and their effect on the gut microbiome and metabolic *** this review article,we have summarized current research on these supplements that are available to improve the abundance of beneficial gut microbiota and to reduce the harmful ones in patients with metabolic syndrome.

关键词： Gut dysbiosis Metabolic syndrome Diabetes mellitus Prebiotics Probiotics Postbiotics

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