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Journal of Rare Earths 2024年第10期42卷 1995-2002页

作者： Minakshi koundal Chhaya sharma A.k.Singh Department of Applied Science and Engineering Indian Institute of Technology RoorkeeSaharanpur Campus Department of Pulp and Paper Technology Indian Institute of Technology Roorkee Saharanpur Campus

Cerium tartrate（CeTar）,produced in this study by precipitating cerium nitrate with potassium sodium tartrate（kNaTar）,was examined as a corrosion *** loss tests show inhibition efficiency of 71.7% with Ce（NO3）3and 88.7% with CeTar inhibitor for one-month exposure to mild steel in 7 g/L NaCl *** inhibition efficiency drops to 28.6% with the fo rmer and remains around 8 7% with the latter inhibitor after six months of *** results from electrochemical testing indicate that the inhibition efficiency decreases by adding cerium ***,the cerium tartrate inhibitor demonstrates a nearly constant inhibition efficiency for up to 30 d,i.e.,≈90%.Electrochemical impedance spectroscopy（EIS） performed in these cases shows the following results:（ⅰ） with cerium nitrate,a film of iron and cerium oxide,which on prolonged exposure diminishes,and（ⅱ） with cerium tartrate,the formation of a bimetallic film（Fe-tartrate-Ce） and a mixture of cerium hydroxide and iro n oxide that protects steel for a longer *** inferences are based on the analyses of scanning electron microscopy/energydispersive X-ray analysis（SEM/EDAX）,X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR）,X-ray photoelectron（XPS）,and Raman spectroscopy results.

关键词： Cerium nitrate Cerium tartrate Corrosion inhibition Inhibitor film characterization Mild steel Rare earths

塔斯曼海南部更新世放射虫的生物地层学(英文)

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微体古生物学报 2006年第1期23卷 31-50页

作者： sharma g k TAkAHASHI k DALAkOTI V S Department of geology Kumaun University Nainital 263002 (U.A.)INDIA Department of Earth & Planetary Sciences Kyushu University-33 Hakozaki Fukuoka 812-81 JAPAN

本研究利用保存丰富、完好的放射虫对塔斯曼海更新世层序进行地层学分析。对塔斯曼海南部更新世的kH94-4TSP-4PC岩芯的放射虫组合进行了详细的生物地层学分析,并从8 .6 m长的岩芯中识别出83种放射虫。依据放射虫属种的出现和消失,可得... 详细信息

本研究利用保存丰富、完好的放射虫对塔斯曼海更新世层序进行地层学分析。对塔斯曼海南部更新世的kH94-4TSP-4PC岩芯的放射虫组合进行了详细的生物地层学分析,并从8 .6 m长的岩芯中识别出83种放射虫。依据放射虫属种的出现和消失,可得到两个放射虫带,即Chi带(老)和Psi带(新)。Chi带的顶部以Saturnalis cir-culariHaeckel ,Cycladophora pliocenicaHays的最后出现和Triceraspyris antarcticaHaecker的首次出现为标志。Psi带的顶部以Stylatractus universusHay和Antarctissa cylindricaPetrushevskaya的最后出现为标志。这些放射虫带可与浮游生物的有孔虫globorotalia ( g.) truncatulinoides带进行对比。

关键词：放射虫更新世生物地层学塔斯曼海

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Exploring one material for dual applications:A red-emitting Mg2geO4:Eu3+ nanophosphor for future generation energy efficient WLEDs and dosimetric applications

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Journal of Rare Earths 2024年第10期42卷 1835-1845页

作者： Akshay Arjun g.P.Darshan S.C.sharma H.Nagabhushana D.V.Sunitha H.B.Premkumar Department of Physics Faculty of Mathematical and Physical SciencesM.S.Ramaiah University of Applied Sciences Jain University C.N.R.Rao Centre for Advanced Materials Tumkur University School of Applied Sciences (Physics) REVA University

The envisaged design and developme nt of individual mate rials to excavate a broader spectrum of desired properties and offer multiple applications are highly *** this in mind,a series of forsterite-structured Mg2geO4:Eu3+（1 mol%-9 mol%） nanophosphors was synthesized via a solution combustion method using oxalyl dihydrazide as a *** X-ray diffraction patterns confirm the orthorhombic crystal system with a Puma space *** results clearly show irregularly shaped cluster-like structures with aggregation of the *** diffuse reflectance spectra,the optical energy band gap of the Mg2geO4:Eu3+（1 mol%-9 mol%） nanophosphors was estimated and obtained to be～4.12-4.32 *** photoluminescence emission spectra exhibit intense peaks at ～579,589,610,661,and 707 nm,which are due to characteristic5D0→7F0,5D0→7F1,5Do→7F2,5D0→7F3and5D0→7F4transitions of Eu3+ions,*** Commission International de L'Eclairage color coordinates are gradually tuned from pale red（0.5980,0.4012） to a pure red（0.6385,0.3611） *** glow peaks showcase excellent super-linear response at low doses of γ-irradiations,indicating that the prepared phosphor can be used in thermoluminescent personal dosimetry which is a biological tissue *** aforementioned results demonstrate that the prepared Mg2geO4:Eu3+（1 mol%-9 mol%） nanophosphors are considered an excellent candidate for dual applications,i.e.,red component in future generation white-light-emitting diodes（WLEDs） and personal dosimetric applications.

关键词： Dosimetry Nanophosphors Photoluminescence Photometric properties Rare earths Thermoluminescence

Role of Social Capital in Determining Happiness and Life Satisfaction:Mediation of Self-reported Health Using Path Analysis

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Fudan Journal of the Humanities and Social Sciences 2024年第2期17卷 211-242页

作者： Suraj sharma Department of Economics S.M.(P.G.)CollegeChandausiM.J.P.Rohilkhand UniversityBareilly243006India

This study links social capital with people’s health and well-being using data from the seventh wave of the World Value Survey,logistic regression,and path *** study’s findings show that happiness and life satisfaction are two different measures of the same construct,or *** determinants of each are also characterised differently:while life satisfaction is more of a stable and relative measure and is more strongly influenced by civic cooperation,social participation,and educational attainment,happiness is more of an unstable measure and is more strongly influenced by community belonging,trust and confidence aggregates,including employment and location of residence of an ***,freedom of choice,financial satisfaction or social comparison,and state of health were the most important factors influencing happiness and life *** findings also show that self-reported health(SRH)has a greater impact on happiness than a measure of life *** analysis shows out of the three other components of social capital—community belonging,civic engagement,and social participation—trust and confidence aggregates are the ones that have the biggest impact on increased social *** both well-being measures,SRH mediated the *** life satisfaction measure had a higher level of mediation of SRH than happiness,but social capital had a smaller direct impact on life satisfaction than on *** was found to be partially mediating this relationship for both happiness and life satisfaction measures,which means that people with higher social capital reported feeling better off.

关键词： Happiness Health Life satisfaction Path analysis Social capital

Multi-omics:Powerful accelerator for uncovering plant specialized metabolic pathways:The case of leonurine

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Molecular Plant 2024年第1期17卷 13-15页

作者： Priyanka gupta Anuj sharma Dinesh A.Nagegowda Molecular Plant Biology and Biotechnology Lab CSIR-Central Institute of Medicinal and Aromatic PlantsResearch CentreBengaluru 560065India Academy of Scientific and Innovative Research Ghaziabad 201002India

As sessile organisms,plants employ a unique adaptive strategy to survive harsh terrestrial environments and defend against or interact with coevolving animals and *** strategy involves expanding their metabolic systems,resulting in the production of plant specialized metabolites(PSMs)or natural ***,PSMs constitute a highly diverse group of compounds based on their common core structure,comprising terpenoids,phenylpropanoids,benzenoids,alkaloids and nitrogen-containing compounds,glucosinolates,indoles and sulfur-containing indole compounds,phenolics,and fatty acid derivatives(garagounis et al.,2021).

关键词： expanding alkaloids sulfur

Effect of process parameter on the flowability of nanocrystalline CoNiCrAlY powder synthesized by mechanical milling

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Particuology 2024年第9期92卷 210-223页

作者： Annadaa Shankara Dash Indranil Manna Deepa Devapal Sharad Chandra sharma Jyotsna Dutta Majumdar School of Nanoscience and Technology IIT KharagpurWest BengalIndia BIT Mesra RanchiJharkhandIndia Department of Metallurgical and Materials Engineering IIT KharagpurWest BengalIndia Vikram Sarabhai Space Centre ThiruvanthapuramKeralaIndia

The present study concerns understanding the effect of process parameters on the characteristics and flowability of nanocrystalline CoNiCrAlY powder synthesized by mechanical *** milling has been conducted in a planetary ball mill with tungsten carbide(WC)ball,with ball to powder ratio of 10:1 at 300 rpm speed,using 1%stearic acid and toluene as process control agent(PCA)with time varying from 10 h to 36 *** synthesized nanocrystalline powder were characterized by Scanning Electron Microscopy,X-ray Diffraction technique,X-ray Photoelectron Spectroscopy,and Differential Scanning ***,flowability in terms of Hausner ratio was assessed by Tap Density *** particle size of the powder was found to decrease from 33μm to 22μm after 10 h of milling and further increases to 43μm and 38μm after 25 and 36 h of milling,respectively,in stearic acid ***,in toluene medium particle size continuously decreases from 33μm to 9.7μm with increasing milling *** particle morphology changes from spherical to platelet shape at low milling hours in both of the *** 25 h of milling,the shape of the particles is nearly spherical for stearic acid and irregular for toluene used as a *** size was found to decrease with increasing milling time from 147 nm to 7.7 nm and to 6.4 nm in stearic acid and toluene media,*** was presence ofγ,γʹ,β,hcp-Co,Al_(2)O_(3)and AlOOH phases on the powder particles milled in both the *** measured Hausner ratio of the powders was found to vary from 1.18 to 1.32 in stearic acid medium,and was found to increase with increasing milling *** the other hand,in toluene media flowability decreases(Hausner ratio increases from 1.33 to 1.44)with increasing milling time.

关键词： Mechanical milling Microstructure Process control agent(PCA) CoNiCrAIY Toluene Stearic acid Flowability

germ cell development in teleost gonads

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Aquaculture and Fisheries 2024年第3期9卷 422-436页

作者： Partigya sharma Shriya Purohit Sachin kothiyal Indrashis Bhattacharya Department of Zoology HNB Garhwal UniversitySrinagar CampusPauri Garhwal246174India

Among vertebrate species,fishes are considered to be the most developmentally diverse taxa exhibiting remarkable gonadal plasticity with capacity of sex *** determination in teleost fishes is governed via a complex regulatory network involving multiple genetic,environmental(temperature,population density,pH),social interaction/stress *** germ-line originates as Primordial germ cells(PgC)from cleavage blastomeres/endoderm and gets specified by maternal inheritance of Vasa,N anos,Tdrds,Dnd,Dazl etc and subsequently migrates to reach the embryonic gonadal ***-hatching,mitotically active germ cells(gc)continue to proliferate via two distinct pathways-firstly,stem cell-like mode followed by meiosis-committed cystic *** Japanese rice fish medaka,Oryzias latipes sex gets determined on the chromosomal basis,where XY becomes a male because of testicular Dmy transcription and XX develops as female owing to gc restricted Foxl 3 *** specific germ-line stem cell systems also have been found in adult *** in teleost fishes,the developmental fate of transplanted gc do not depend on the sex of the donor rather solely relies upon the sex of the ***,sexually mature piscine gonads remain developmentally plastic showing extensive responsiveness towards sex *** critical regulation of gonadal differentiation is directed by female specific 17β-estradiol(E2)and bio-active male androgen 11-keto-testosretone(11-kT).Various transcription factors(TFs)e.g.-Dmrt1,DAX1,Ad4BP/SF-1,Foxl 2 regulate the bio-conversion rate of testosterone(T)to either E2 or ***,multiple endocrine factors(EFs)e.g.-LH,FSH,E2,11-kT and growth factors(gFs)e.g-AMH,gSDF,IgF-1/3,gDF-9/BMP-15 critically induce gc differentiation to regulate the gametogenic *** this article we have precisely discussed the endocrine regulation of gc development during gonadal maturation of teleosts.

关键词： Testis Spermatogenesis Sperm Ovary Oogenesis Egg gonads

Variation in the Flaring Potential of Different Sunspot groups During Different Phases of Solar Cycles 23 and 24

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Research in Astronomy and Astrophysics 2024年第2期24卷 144-153页

作者： Abha Singh Anurag Chaudhari gyaneshwar sharma A.k.Singh Department of Physics T.D.P.G.College Jaunpur-222002India Department of Physics Banaras Hindu UniversityVaranasi-221005India

In this present study,we have analyzed different types of X-ray solar flares(C,M,and X classes)coming out from different classes of sunspot groups(SSgs).The data which we have taken under this study cover the duration of 24 yr from 1996 to *** this,we observed a total of 15015 flares(8417 in SC-23 and 6598 in SC-24)emitted from a total of 33780 active regions(21746 in SC-23 and 12034 in SC-24)with sunspot *** defined the flaring potential or flare-production potential as the ratio of the total number of flares produced from a particular type of SSg to the total number of the same-class SSgs observed on the solar *** we studied yearly changes in the flaring potential of different McIntosh class groups of sunspots in different phases of SC-23 and *** addition,we investigated yearly variations in the potential of producing flares by different SSgs(A,B,C,D,E,F,and H)during different phases(ascending,maximum,descending,and minimum)of SC-23 and *** are our findings:(1)D,E,and F SSgs have the potential of producing flares≥8 times greater than A,B,C and H SSgs;(2)The larger and more complex D,E,and F SSgs produced nearly 80%of flares in SC-23 and 24;(3)The A,B,C and H SSgs,which are smaller and simpler,produced only 20%of flares in SC-23 and 24;(4)The biggest and most complex SSgs of F-class have flaring potential 1.996 and 3.443 per SSg in SC-23 and 24,respectively.(5)The potential for producing flares in each SSg is higher in SC-24 than in SC-23,although SC-24 is a weaker cycle than SC-23.(6)The alterations in the number of flares(C+M+X)show different time profiles than the alterations in sunspot numbers during SC-23 and 24,with several peaks.(7)The SSgs of C,D,E,and H-class have the highest flaring potential in the descending phase of both SC-23 and 24.(8)F-class SSgs have the highest flaring potential in the descending phase of SC-23 but also in the maximum phase of SC-24.

关键词： (Sun:)sunspots-Sun flares-Sun activity-Sun magnetic fields-Sun filaments-prominences

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Mapping COVID-19 in India:Southern states at the forefront of new JN.1 variant

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Asian Pacific Journal of Tropical Medicine 2024年第1期17卷 1-3页

作者： Rabin Debnath Arshdeep Singh kushal Seni Anjali sharma Viney Chawla Pooja A Chawla Department of Pharmaceutical Chemistry ISF College of PharmacyG.T RoadGhal KalanMogaPunjab142001India Department of Pharmaceutical Analysis ISF College of PharmacyG.T RoadGhal KalanMogaPunjab142001India University Institute of Pharmaceutical Sciences and Research Baba Farid University of Health SciencesFaridkotPunjabIndia

A new variant,JN.1,stemming from the omicron subvariant BA.2.86,garnered the attention of the World Health Organization(WHO)as a"variant of interest."Despite its rapid global spread,especially in the US,Canada,France,Singapore,Sweden[1],and the Uk,JN.1 is considered to pose minimal *** vaccinations are believed to remain effective against *** WHO underscores the importance of maintaining immunization records amid co-occurring respiratory illnesses,and epidemiologists recommend monitoring hospitalizations,particularly in areas with low vaccination rates.

关键词： Canada Mapping spite

Effects of methionine supplementation in a reduced protein diet on growth performance, oxidative status, intestinal health, oocyst shedding, and methionine and folate metabolism in broilers under Eimeria challenge

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Journal of Animal Science and Biotechnology 2024年第5期15卷 1951-1979页

作者： guanchen Liu Venkata Sesha Reddy Choppa Milan kumar sharma Hanseo ko Janghan Choi Woo kyun kim Department of Poultry Science University of GeorgiaAthensGA 30602USA

Background This study investigated effects of different methionine(Met)supplementation levels in a reduced protein diet on growth performance,intestinal health,and different physiological parameters in broilers under Eimeria challenge.A total of 600 fourteen-day-old Cobb500 male broilers were challenged with ***,***,and ***,and randomly allocated in a 2×5 factorial *** received normal protein diets(20%crude protein,NCP)or reduced protein diets(17%crude protein,LCP),containing 2.8,4.4,6.0,7.6,and 9.2 g/kg of *** On 6 and 9 days post inoculation(DPI),increasing Met level linearly improved the growth performance(Pg linearly increased as Met level increased(Pght(VH):crypt depth(CD)in the LCP groups were higher on 6 DPI(Pged quadratically as Met level increased(Pglutathione(gSH)and glutathione disulfide(gSSg)linearly increased as Met level increased(PgSSg quadratically increased,whereas gSH:gSSg quadratically decreased as Met levels increased(Pkines were lower in the LCP groups than the NCP groups(Pged quadratically in the NCP group as Met level *** expression of Met and folate metabolism genes were lower in the LCP groups than the NCP groups on 9 DPI(Pgenes linearly or quadratically decreased as Met level increased(Pgulatory roles of Met in different physiological parameters including oxidative stat

关键词： Broiler Coccidiosis Eimeria Intestinal health Methionine

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