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Generation scenarios of.anodic structures and experimental realization of.turbulence in unmagnetized plasma

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Plasma Science and Technology 2020年第8期22卷 90-98页

作者： prince ALEX Suraj Kumar SINHA Departimento di f.sica G.Occhialini Universita degli studi di MilanoBicoccaI-20126Italy Department of.Physics Pondicherry UniversityKalapetPuducherry 605014India

In the present work,we report development of.a DC glow discharge plasma(GDP)set-up to study controlled evolution of.anodic structures having distinctive geometry,size and layers,generated in f.ont of.a positively biased electrode,submerged in unmagnetized *** such an anodic structure,we have also investigated the condition under which the turbulence is *** of.these structures,generated in f.ont of.a positively biased electrode,depends on multiple parameters such as the ratio of.anode to cathode size,electrode separation,gas pressure,biasing conf.guration such as anode bias,cathode bias and grounding *** attempted to classif. dif.erent anodic structures observed experimentally,as anode glow,f.reball,anode spot,double layer and multiple double layers(MDLs)based on its physical *** these structures the present investigation is f.cused on *** number of.layers,observed in MDLs varied f.om as high as six to as low as zero,by controlling the operating discharge parameters,*** were carried out using Langmuir *** analysis of.f.oating potential f.uctuations corresponds to a multiple anodic structure showed emergence of.turbulence,at its critical stage,satisf.ing condition f.r self.organized criticality(SOC).This was identif.ed with three slopes observed in the power spectrum,resembling the sand-pile ***,the GDP is completely dif.erent f.om that of.the magnetically conf.ned plasma,the nature of.turbulence observed with SOC,is very similar to that observed in the scrape of.layer of.f.sion ***,the present investigation could provide new approach to study turbulence of.similar nature,under an experimental condition that is f.ee f.om the complexities of.complicated f.eld geometries used in conf.nement devices.

关键词： glow discharge plasma anode structure multiple anodic double layer turbulence unmagnetized plasma f.reball

f.edback model of.secondary electron emission in DC gas discharge plasmas

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Plasma Science and Technology 2018年第2期20卷 128-133页

作者： Saravanan ARUMUGAM prince ALEX Suraj Kumar SINHA Department of.Physics Pondicherrry University

f.edback is said to exist in any amplif.er when the f.action of.output power in f.d back as an ***,in gaseous discharge ions that incident on the cathode act as a natural f.edback element to stabilize and self.sustain the *** present investigation is intended to emphasize the f.edback nature of.ions that emits secondary electrons（SEs）f.om the cathode surf.ce in DC gas *** average number of.SEs emitted per incident ion and non ionic species（energetic neutrals,metastables and photons）which results f.om ion is def.ned as ef.ective secondary electronemission coef.icient（ESEEC,Eg）.In this study,we derive an analytic expression that corroborates the relation betweenEg and power inf.ux by ion to the cathode based on the f.edback theory of.an *** addition,experimentally,we conf.rmed the typical positive f.edback nature of.SEEf.om the cathode in argon DC glow *** experiment is done f.r three dif.erent cathode material of.same dimension（tungsten（W）,copper（Cu）and brass）under identical discharge conditions（pressure：0.45 mbar,cathode bias：-600 V,discharge gab：15 cm and operating gas：argon）.f.rther,we f.und that theEg value of.these cathode material controls the amount of.f.edback power given by *** dif.erence in f.edback leads dif.erent f.nal output i.e the power carried by ion at cathode（Pi C￠∣）.The experimentally obtained value of.Pi C￠∣is 4.28 W,6.87 W and9.26 W respectively f.r W,Cu and *** addition,the present investigation reveals that the amount of.f.edback power in a DC gas discharges not only af.ect the f.action of.power f.d back to the cathode but also the entire characteristics of.the discharge.

关键词： f.edback secondary electron emission DC gas discharges power inf.ux by ion at cathode cathode temperature

Analysis of.f.rmers Adoption Behaviour of.CRIG Recommended Technologies as a Package: The Case of.Some Self.Help Cocoa f.rmer Associations in the Eastern Region of.Ghana

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Agricultural Sciences 2015年第6期6卷 601-608页

作者： Asamoah Mercy f.ancis Aneani Samuel Of.ri prince f. Branor Cocoa Research Institute of.Ghana (Crig) New-Tafo Ghana

Adoption of.recommended technologies as a package is the prelude to increase cocoa productivity per unit area. This is due to the interactive benef.ts of.individual technologies which have been recommended by the Cocoa Research Institute of.Ghana (CRIG). However, many surveys among cocoa f.rmers have reported low adoption of.technologies resulting in low productivity of.cocoa with an average of.450 kg/ha among small holder cocoa f.rmers in Ghana. The current study investigates the adoption behavior of.some cocoa f.rmers belonging to some self.help f.rmer associations in the Eastern Region who are being monitored by CRIG since 2011. Primary data was collected f.om 131 respondents using questionnaires to interview f.rmers between 2013 and 2015. The results showed that adoption of.recommended cocoa technologies as a package was still low. Respondents, however, identif.ed a number of.challenges including high cost of.inputs, lack of.f.nance and access to credit, high cost of.labour and old age as some f.ctors hampering composite adoption of.the f.ll CRIG technologies. It is recommended that small-scale cocoa f.rmers need a sustainable and convenient microf.nance that can motivate and help them af.ord the cost associated with the f.ll package of.technologies. f.rmers’ savings culture should also be nurtured to enhance their f.nancial capabilities and investment in the cocoa f.rm.

关键词： Cocoa Small-Scale f.rmers Adoption Technologies Microf.nance

4-Hydroxycinnamic acid attenuates neuronal cell death by inducing expression of.plasma membrane redox enzymes and improving mitochondrial f.nctions

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f.od Science and Human Wellness 2023年第4期12卷 1287-1299页

作者： Sujin Park YoonA Kim Jaewang Lee Hyunsoo Seo Sang-jip Nam Dong-Gyu Jo Dong-Hoon Hyun Department of.Lif. Science Ewha Womans UniversitySeoul 03760South Korea Department of.Chemistry and Nano Science Ewha Womans UniversitySeoul 03760South Korea School of.Pharmacy Sungkyunkwan UniversitySuwon 16419South Korea

Many approaches to neurodegenerative diseases that f.cus on amyloid-βclearance and gene therapy have not been *** therapeutic applications f.cus on enhancing neuronal cell survival during the pathogenesis of.neurodegenerative diseases,including mitochondrial *** membrane(PM)redox enzymes are crucial in maintaining cellular physiology and redox homeostasis in response to mitochondrial *** phytochemicals are known to induce the expression of.detoxif.ing enzymes under stress *** this study,mechanisms of.neuroprotective ef.ects of.4-hydroxycinnamic acid(HCA)were examined by analyzing cell survival,levels of.abnormal proteins,and mitochondrial f.nctions in two dif.erent neuronal *** protected two neuronal cells exhibited high expression of.PM redox enzymes and the consequent increase in the NAD^(+)/NADH *** cultured with HCA showed delayed apoptosis and decreased oxidative/nitrative damage accompanied by decreased ROS production in the *** increased the mitochondrial complexes I and II activities and ATP ***,HCA increased mitochondrial f.sion and decreased mitochondrial ***,HCA maintains redox homeostasis and energy metabolism under oxidative/metabolic stress *** f.ndings suggest that HCA could be a promising therapeutic approach f.r neurodegenerative diseases.

关键词： NADH-quinone oxidoreductase 1(NQO1) Cytochrome b5 reductase 4-Hydroxycinnamic acid Neuroprotection Improved mitochondrial f.nctions

Synthesis, Growth and Characterization of.Sodium Mixed Cadmium Oxalate Crystals

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Journal of.Crystallization Process and Technology 2016年第2期6卷 11-20页

作者： f. Daisy Selasteen S. Alf.ed Cecil Raj A. Alagappa Moses f. Emalda prince R. Esther Getsy R. Elakkiya Department of.Physics Bishop Heber College Tiruchirappalli India Department of.Physics St. Joseph’s College Tiruchirappalli India Department of.Environmental Sciences Bishop Heber College Tiruchirappalli India

The newly synthesized CdNa2?2C2O4?2H2O crystals having a size of.0.30 × 0.25 × 0.20 mm3 were grown by the single-dif.usion reaction method in the silica gel medium at 28?C temperature. The crystalline nature of.crystals was determined in 20 days by 1) varying the concentrations of.the f.ed solutions and the gel pH level, 2) changing the specif.c gravity of.the f.ed solution, and 3) changing the gel aging period. The crystals were characterized by using the methods such as powder X-ray dif.raction, f.IR, UV, SEM-EDAX, TGA/DTA, and micro-hardness test. The structure of.as-grown crystals was determined by the powder crystal XRD patterns. f.IR & SEM-EDAX spectral analyses were used to conf.rm the presence of.the required f.nctional groups of.as grown crystals. UV absorption spectrum, the absorption peaks at 224.64 nanometer, determined the energy gap. TGA/DTA thermo gram was used to detect the thermal stability of.sodium mixed cadmium oxalate dihydrate crystals. The present grown crystals were brittle and also plastic in nature was identif.ed by Vickers micro-hardness test.

关键词： CdNa2?2C2O4?2H2O Crystal Growth XRD f.IR UV TGA/DTA SEM-EDAX Micro Hardness

Soil and Land Suitability Assessment f.r Rice Cultivation at Tono Irrigation Area in the Upper East Region, Ghana

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Open Journal of.Applied Sciences 2021年第11期11卷 1230-1239页

作者： prince M. Gyekye Charles Y. f. Domozoro Mohammed Musah f.lix O. Ababio Adams Sadick Soil Survey GIS and Mapping CSIR-Soil Research Institute Accra Ghana Natural Resources Management CSIR-Animal Research Institute Accra Ghana Soil f.rtility and Nutrition CSIR-Soil Research Institute Kwadaso Ghana Directorate/Soil f.rtility CSIR-Soil Research Institute Accra Ghana Analytical Services Laboratory CSIR-Soil Research Institute Kwadaso Ghana

Agriculture is one of.the livelihood supports f.r the people of.Upper East Region of.Ghana. Soil evaluation research was conducted at Tono Irrigation Scheme to assess soil and land suitability f.r rice cultivation in the irrigable area of.Tono Irrigation Scheme. A total of eleven (11) soil samples were collected and analysed for their chemical and physical properties. Based on field observation and criteria for soil suitability assessment, the different soil types that were identified were classified at the series level based on their position, parent material and the observed physical characteristics. The results indicated that thef.nt-f.mily:""> pH of.the soils was within the acceptable range f.r crop production;however, the overall f.rtility level of.the soils was very low. Physically, the upland soils were well to moderately well-drained, consisting of.coarse-grained sandy loams topsoil overlying similar sandy loams and sandy clay loams at depth. They included Leptosols and Lixisols. The soils of.the Scheme under lowlands and valley bottom sites, however, included Eutric Gleysol, Calsic Vertisol, Eutric f.uvisol and Eutric Plinthosol, which were heavily textured and relatively poor drained, or medium-textured and moderately to imperf.ctly well-drained. They showed a low to a very low rate of.water percolation losses, which is good f.r the current f.rming system of.cropping rice within the lowlands and valley bottom sites of.the Scheme.

关键词： Soil Classif.cation Lowland Upland Irrigation Valley Bottom

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话语分析:语言能力研究的一部分

当代语言学 1993年第3期 35-47,50页

作者： Ellen f.prince 徐赳赳中国社会科学院语言所北京建内大街5号100732

本文简单地回顾了“话语分析”这一术语的来源,以及“话语分析”作为一门学科的形成的条件及话语分析的研究课题。本文着重谈了话语分析和语言能力的关系,作者认为最能发现语言能力的领域是话语分析,并仔细观察了在话语平面上的语言能... 详细信息

本文简单地回顾了“话语分析”这一术语的来源,以及“话语分析”作为一门学科的形成的条件及话语分析的研究课题。本文着重谈了话语分析和语言能力的关系,作者认为最能发现语言能力的领域是话语分析,并仔细观察了在话语平面上的语言能力是如何表现出其微妙性、协调性和非常识性的。

关键词：话语分析语言能力语言学家话语功能话语模型分裂句话题化句法结构命题说话者

Relationship mapping of.consumer buying behavior antecedents of.secondhand clothing with f.zzy DEMATEL

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Journal of.Management Analytics 2021年第3期8卷 530-568页

作者： Maria Esther f.Medalla Kaf.erine D.Yamagishi Ann Myril C.Tiu Reciel Ann B.Tanaid Dharyll prince M.Abellana Shirley Ann A.Caballes Eula Margareth Y.Jabilles Egberto f.Selerio,Jr. Miriam f.Bongo Lanndon A.Ocampo Department of.f.ods Garments and Cosmetology TechnologyCebu Technological UniversityCebu CityPhilippines Department of.Tourism Management Cebu Technological UniversityCebu CityPhilippines Institute of.f.od Science Innovation and TechnopreneurshipCebu Technological UniversityCebu CityPhilippines Department of.Industrial Engineering Cebu Technological UniversityCebu CityPhilippines Department of.Computer Science University of the Philippines CebuCebu CityPhilippines Graduate School Cebu Technological UniversityCebu CityPhilippines

This paper aims to identif. the antecedents of.buying behavior f.r secondhand clothing among millennials,as well as to determine their underlying causal *** a comprehensive literature search,a total of.18 antecedents were f.und,and these are categorized into three motives,namely,economic,hedonic and recreational,and *** a case study in the Philippines,a f.cus group discussion among experts who are active millennial secondhand clothing users and buyers were tasked to identif. the antecedents they have experienced and f.rther conf.rm those extracted f.om the *** establish the causal relationships of.these antecedents,categorize them into net causes or net ef.ects,and address the vagueness associated with the decision-making process,a f.zzy DEMATEL method is *** reveal that avoidance of.conventional channels proves to be the antecedent providing the highest impact among all other ***,high quality,and f.shion trend f.und to be the antecedents with the highest impacts received,making them the major net *** f.om this work hope to provide a f.amework among practitioners that would lead to a better understanding of.millennials’buying behavior f.r secondhand clothing.

关键词： millennials consumer buying behavior antecedents secondhand clothing f.zzy DEMATEL

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两类带约束条件的分拆函数的同余性质

两类带约束条件的分拆函数的同余性质

作者： prince Adansie 江苏大学

学位级别：硕士

1919年,印度数学家Ramanujan最早发现了三个著名的关于分拆函数的同余关系。此后,带约束条件的分拆函数的同余性质成为整数分拆理论的一个重要的研究课题,许多条件分拆函数的同余关系相继被证明了。在本文中,我们主要研究两类带约束条... 详细信息

1919年,印度数学家Ramanujan最早发现了三个著名的关于分拆函数的同余关系。此后,带约束条件的分拆函数的同余性质成为整数分拆理论的一个重要的研究课题,许多条件分拆函数的同余关系相继被证明了。在本文中,我们主要研究两类带约束条件的分拆函数的同余性质:指标分拆函数中指标的个数和每部分出现奇数次的分拆的个数。2002年,Andrews院士、Lewis和Lovejoy引入了一类新的分拆函数:带指标的分拆函数。最近,Lin引入了条件分拆函数PDt(n),它表示指标分拆函数中指标的个数。Lin不但建立了一些PDt(n)模3和9的同余关系并给出了关于PDt(27n+6)和PDt(27n+21)模9的两个猜想。在本文中,我们将利用r2(n)和r6(n)的公式证明并推广Lin的猜想,其中rk(n)表示正整数n表示成k个平方数之和的表示方法数。令f.n)表示正整数n的每个分拆中每个部分出现奇数次的分拆的个数。最近,Hirschhorn和Sellers教授刻画了f.2n)的奇偶性,得到f.n)的无限多个Ramanujan型模2的同余关系。在本文中,我们研究了f.2n+1)的奇偶性。特别地,我们建立了f.n)的非线性同余关系。比如,我们证明了对任意的整数n≥0,f.2340n2+780n+65)≡f.2340n2+3900n+1625)≡0(mod 2).

关键词：条件分拆函数同余关系平方和带指标的分拆函数 theta函数