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Journal of Rare Earths 2018年第10期36卷 1050-1059页

作者： k.Nusrath k.Muraleedharan Department of Chemistry University of Calicut

Ceria nano discs were synthesized by the stepwise thermal decomposition strategy of the oxalate precursor. A series of Ce（1-x）CuxO2（x = 0, 0.02, 0.1, 0.2 and 0.3） nano sized oxide systems were prepared through thermal decomposition route. kinetic characterization of formation of solid solution was made by isoconversional strategy under non-isothermal condition. Introduction of various reactant molar ratios of Cu2＋：Ce4＋ has a pivotal role in the creation of new oxygen vacancies, decomposition strategy,particle size and shape. Cu2＋ doping（x = 0.02 and 0.1） damages the disc shaped morphology of *** distribution of Cu2＋ on the oxalate precursor has a significant role in the catalyzing activity for the destruction of oxalate bond to oxide. 2 mol% doped Cu2＋ promotes breaking of oxalate bonds in nitrogen atmosphere. In vitro cell viability assay illustrates enhanced toxicity to cancer cells with 10 mol% Cu2＋ doped ceria.

关键词： Nano disc Isoconversional Oxygen vacancies Decomposition strategy Cell viability Rare earths

Type Inversion and Certain Physical Properties of Spray Pyrolysed SnO_2:Al Films for Novel Transparent Electronics Applications

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Journal of Materials Science & Technology 2014年第2期30卷 97-102页

作者： k.Ravichandran k.Thirumurugan Post Graduate and Research Department of Physics AVVM Sri Pushpam College(Autonomous)

Aluminium doped tin oxide films have been deposited onto glass substrates by using a simplified and low cost spray pyrolysis technique. The AI doping level varies between 0 and 30 at.% in the step of 5 at.%. The resistivity （p） is the minimum （0.38 Ω cm） for 20 at.% of AI doping. The possible mechanism behind the phenomenal zig-zag variation in resistivity with respect to AI doping is discussed in detail. The nature of conductivity changes from n-type to p-type when the AI doping level is 10 at.%. The results show that 20 at.% is the optimum doping level for good quality p-type SnO2：AI films suitable for transparent electronic devices.

关键词： Tin oxide films P-type transparent conducting oxide (TCO) Spray pyrolysis Transparent electronics Electrical properties Optical properties

2022年中国新生儿协作网极早产儿红细胞输注现况分析

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中华儿科杂志 2025年第1期63卷 55-61页

作者：莫艳钱爱民白瑞苗李淑涓玉小清王瑾 Lee Shoo k. 蒋思远韦秋芬周文浩国家儿童医学中心复旦大学附属儿科医院新生儿科上海南京医科大学附属儿童医院新生儿医疗中心南京西北妇女儿童医院新生儿科西安广西壮族自治区妇幼保健院新生儿医疗中心南宁加拿大西奈山医院母婴健康研究中心多伦多M5GX 广州市妇女儿童医疗中心新生儿医学中心广州

目的分析2022年中国新生儿协作网(CHNN)各单位极早产儿(出生胎龄<32周)红细胞输注治疗的状况。方法基于CHNN极早产儿队列的横断面研究, 纳入2022年生后24 h内收入CHNN 89家单位的6 985例极早产儿。排除合并严重先天畸形及放弃治疗或转至... 详细信息

目的分析2022年中国新生儿协作网(CHNN)各单位极早产儿(出生胎龄kruskal-WallisH检验及Mann-WhitneyU检验等进行组间比较, 采用Cochran-Armitage和Jonckheere-Terpstra趋势检验进行不同出生胎龄及不同呼吸支持水平间的趋势检验。结果 6 985例极早产儿中男3 865例(55.3%), 出生胎龄为30.0(28.6, 31.0)周, 出生体重为(1 302±321)g。红细胞输注组3 617例(51.8%), 未输注组3 368例(48.2%)。出生胎龄<28、28～31周的极早产儿红细胞输注率分别为77.7%(893/1 150)、46.7%(2 724/5 835)。红细胞输注组极早产儿共接受9 616次红细胞输注, 输注时需有创呼吸支持的有2 459次(25.6%), 无创呼吸支持4 934次(51.3%), 无呼吸支持的有2 223次(23.1%)。因632次红细胞输注输血前血红蛋白未记录, 8 984次红细胞输注纳入分析。红细胞输注组母亲合并妊娠期高血压比例高于未输注组(χ2=10.73, P=0.001), 剖宫产出生、母亲产前激素应用比例均低于未输注组(χ2=12.00、12.93, 均P<0.001);与未输注组相比, 红细胞输注组患儿出生胎龄更小、出生体重更低, 小于胎龄、多胎以及第5分钟Apgar评分≤3分比例均更高, 女性、本院出生以及延迟脐带结扎比例均更低, 入院时生理稳定性转运风险指数评分更高(均P<0.05)。红细胞输注组极早产儿红细胞输注次数为2(1, 3)次, 首次红细胞输注时为18(8, 29)日龄, 首次红细胞输注前血红蛋白为97(86, 109)g/L。红细胞输注时≤7日龄的极早产儿有创呼吸支持、无创呼吸支持和无呼吸支持组接受红细胞输注前的血红蛋白水平差异无统计学意义(H=5.59, P=0.061);8～21以及≥22日龄的极早产儿不同呼吸支持状况下接受红细胞输注前的血红蛋白水平差异均有统计学意义(H=10.91、39.19, 均P<0.01)。8～21日龄、≥22日龄无呼吸支持的极早产儿阈值上红细胞输注分别为90.1%(264/293)、91.1%(1 578/1 732)。阈值上输血组极早产儿相比阈值下输血组发生坏死性小肠结肠炎的比例更高(χ2=10.59, P=0.001), 住院时间更长(Z=4.67, P<0.001)。结论 2022年CHNN纳入的极早产儿红细胞输注率较高, 接受红细胞输注前的血红蛋白水平普遍高于现有证据推荐的输注阈值。

关键词：婴儿, 早产红细胞输注重症监护病房, 新生儿

The sexually dimorphic expression of glutamate transporters and their implication in pain after spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3317-3329页

作者： Jennifer M.Colón-Mercado Aranza I.Torrado-Tapias Iris k.Salgado Jose M.Santiago Samuel E.Ocasio Rivera Dina P.Bracho-Rincon Luis H.Pagan Rivera Jorge D.Miranda Department of Physiology University of Puerto RicoMedical Sciences CampusSan JuanPRUSA National Institutes of Health National Human Genome Research InstituteBethesdaMDUSA Universidad Central del Caribe School of MedicineBayamónPRUSA University of Puerto Rico Carolina CampusCarolinaPRUSA Institute of Neurobiology San JuanPRUSA

In addition to the loss of motor function,~60% of patients develop pain after spinal cord *** cellular-molecular mechanisms are not well understood,but the data suggests that plasticity within the rostral,epicenter,and caudal penumbra of the injury site initiates a cellularmolecular interplay that acts as a rewiring mechanism leading to central neuropathic *** can lead to the formation of new connections triggering abnormal sensory *** excitatory glutamate transporters are responsible for the reuptake of extracellular glutamate which makes them a critical target to prevent neuronal hyperexcitability and *** previous studies showed a sexually dimorphic therapeutic window for spinal cord injury after treatment with the selective estrogen receptor modulator *** this study,we investigated the anti-allodynic effects of tamoxifen in male and female rats with spinal cord *** hypothesized that tamoxifen exerts anti-allodynic effects by increasing the expression of glutamate transporters,leading to reduced hyperexcitability of the secondary neuron or by decreasing aberrant *** and female rats received a moderate contusion to the thoracic spinal cord followed by subcutaneous slow-release treatment of tamoxifen or matrix pellets as a control(placebo).We used von Frey monofilaments and the“up-down method”to evaluate mechanical *** treatment decreased allodynia only in female rats with spinal cord injury revealing a sexdependent *** expression profile of glutamatergic transporters(excitatory amino acid transporter 1/glutamate aspartate transporter and excitatory amino acid transporter 2/glutamate transporter-1)revealed a sexual dimorphism in the rostral,epicenter,and caudal areas of the spinal cord with a pattern of expression primarily on *** rodents showed a significantly higher level of excitatory amino acid transporter-1 expression while male rodents showed increased

关键词： allodynia central neuropathic pain EAAT-1/GLAST EAAT-2/GLT-1 glutamate transporters selective estrogen receptor modulator sexual dimorphism spinal cord injury trauma

kinetics of Mild Steel Corrosion in Aqueous Acetic Acid Solutions

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Journal of Materials Science & Technology 2010年第3期26卷 264-269页

作者： S.k.Singh A.k.Mukherjee Department of Applied Chemistry Institute of TechnologyBanaras Hindu University Department of Chemistry University of Delhi

The kinetics of mild steel corrosion in aqueous acetic acid solution has been investigated by weight loss and polarization techniques at 25,35 and 45℃.The weight loss of mild steel at room temperature （25℃） has been found to be quite significant,indicating poor corrosion resistance in acetic *** maximum corrosion rate has been observed in 25% acetic acid solution at all three experimental *** decrease in corrosion rate after attaining a maximum value has been attributed to the deposition of corrosion product on the *** polarization curves exhibit active behaviour at each concentration and temperature with a shift towards higher current density region and increased corrosion rates at higher *** cathodic polarization curves are almost identical irrespective either of the concentration of acetic acid or *** results obtained by both the techniques are in good agreement,while the surface studies support the conclusions drawn from the weight loss method.

关键词： Corrosion Mild steel Acetic acid

Effect of induced magnetic field on natural convection in vertical concentric annuli

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Acta Mechanica Sinica 2012年第2期28卷 315-323页

作者： R.k.Singh A.k.Singh Department of Mathematics Central University of BiharPatnaIndia Department of Mathematics Banaras Hindu UniversityVaranasiIndia

In the present paper, we have considered the steady fully developed laminar natural convective flow in open ended vertical concentric annuli in the presence of a ra- dial magnetic field. The induced magnetic field produced by the motion of an electrically conducting fluid is taken into account. The transport equations concerned with the con- sidered model are first recast in the non-dimensional form and then unified analytical solutions for the velocity, induced magnetic field and temperature field are obtained for the cases of isothermal and constant heat flux on the inner cylin- der of concentric annuli. The effects of the various phys- ical parameters appearing into the model are demonstrated through graphs and tables. It is found that the magnitude of maximum value of the fluid velocity as well as induced magnetic field is greater in the case of isothermal condition compared with the constant heat flux case when the gap be- tween the cylinders is less or equal to 1.70 times the radius of inner cylinder, while reverse trend occurs when the gap between the cylinders is greater than 1.71 times the radius of inner cylinder. These fields are almost the same when the gap between the cylinders is equal to 1.71 times the radius of inner cylinder for both the cases. It is also found that as the Hartmann number increases, there is a flattening ten- dency for both the velocity and the induced magnetic field. The influence of the induced magnetic field is to increase the velocity profiles.

关键词： Natural convection Isothermal Heat flux Skin-friction Induced magnetic field Magnetohydrody- namics

Enhancement of Natural Circulation Type Domestic Solar Hot Water System Performance by using a Wind Turbine

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Journal of Thermal Science 2011年第4期20卷 371-376页

作者： k.k.Ramasamy PSS.Srinivasan Department of Mechanical Engineering Paavai Engineering CollegeNamakkal-637018TNIndia Department of Mechanical Engineering Knowledge Institute of TechnologySalem-637504TNIndia

Performance improvement of existing 200 litres capacity natural convection type domestic solar hot water system is attempted.A two-stage centrifugal pump driven by a vertical axis windmill having Savonius type rotor is added to the fluid *** windmill driven pump circulates the water through the *** system with necessary instrumentation is tested over a *** on Natural Circulation System(NCS)mode and Wind Assisted System(WAS)mode are carried out during January,April,July and October,*** results of a clear day are *** average efficiency of 25-28% during NCS mode and 33-37% during WAS mode are *** higher wind velocities,higher collector flow rates and hence higher efficiencies are *** general,WAS mode provides improvements in efficiency when compared to NCS mode.

关键词： Solar hot water system efficiency improvement windmill driven pump

MINIMAX PROGRAMMING UNDER GENERALIZED （p, r）-INVEXITY

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Journal of Systems Science & Complexity 2007年第4期20卷 501-508页

作者： S. k. MISHRA Shouyang WANG k. k. LAI Department of Mathematics Statistics and Computer Science College of Basic Sciences and Humanities G. B. Pant University of Agriculture and Technology Pantnagar-263 145 India Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China Department of Management Sciences City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China

Minimax programming problems involving generalized （p, r）-invex functions are consid- ered. Parametric sufficient optimality conditions and duality results are established under the aforesaid assumptions on the obje... 详细信息

关键词： Duality minimax programming optimality conditions (p r)-invex functions.

ROLE OF α-PSEUDO-UNIVEX FUNCTIONS IN VECTOR VARIATIONAL-LIkE INEQUALITY PROBLEMS

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Journal of Systems Science & Complexity 2007年第3期20卷 344-349页

作者： S. k. MISHRA Shouyang WANG k. k. LAI Department of Mathematics Statistics and Computer Science College of Basic Sciences and Humanities G. B. Pant University of Agriculture and Technology Pantnagar-263 145 India. Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China. Department of Management Sciences City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China.

In this paper, we introduce a new class of generalized convex function, namely, a-pseudounivex function, by combining the concepts of pseudo-univex and α-invex functions. Further, we establish some relationships between vector variational-like inequality problems and vector optimization problems under the assumptions of α-pseudo-univex functions. Results obtained in this paper present a refinement and improvement of previously known results.

关键词： α-pseudo-univex functions vector optimization vector variational-like inequality problems.

Biofuel-driven trigeneration systems for non-residential building applications:A holistic assessment from the energy,environmental and economic perspectives

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Building Simulation 2023年第4期16卷 557-576页

作者： k.F.Fong C.k.Lee Division of Building Science and Technology College of EngineeringCity University of Hong KongTat Chee AvenueKowloonHong KongChina

In the metropolises,it is unlikely to use merely solar and wind energy to pursue zero carbon building ***,it would become possible if biofuel-driven trigeneration systems(BDTS)are *** is thus essential to assess the application opportunity of BDTS in a holistic *** this study,BDTS offered definite primary energy saving of up to 15%and carbon emissions reduction of at least 86%in different types of non-residential buildings as compared to the conventional *** 24/7 operation for the hotel and hospital buildings,the corresponding BDTS could even achieve zero carbon *** the BDTS primed with compression-ignition internal combustion engine were not economically viable even in running cost due to the high local biodiesel price *** BDTS primed with spark-ignition engine and fueled by biogas,however,would have economic merit when carbon price was considered for the conventional systems that fully utilize fossil *** of carbon tax and social cost could have the payback ceilings of 8 years and 2 years respectively for most of building ***,the results could reflect the application potential of BDTS for non-residential buildings,leading the pathway to carbon neutrality for sustainable sub-tropical cities.

关键词： trigeneration biofuel dynamic simulation carbon tax social cost economic analysis