检索结果-南通市图书馆

The effect of Al addition to prevent Ni sintering in steam reforming of bio-ethanol

在线全文

cnki会议

学校读者我要写书评

暂无评论

The effect of Al addition to prevent Ni sintering in steam r...

第九届全国氢能学术会议

作者： h.Devianto S.P.Yoon S.W.Nam T.h.Lim h.i.lee Seoul National University Korea institute of Science and Technology

＜正＞Reforming of bio-ethanol provides a promising method for hydrogen production from renewable *** most well-known active metal for ethanol steam reforming is Ni. Unfortunately,Ni sintering,however,cannot be avoided at high temperature and high water content,as shown in steam reforming of bio-ethanol for high temperature fuel cell application,

关键词：

Effect of SiO2 and CeO2 to Ni bulk catalyst in water gas shift reaction

在线全文

cnki会议

学校读者我要写书评

暂无评论

Effect of SiO2 and CeO2 to Ni bulk catalyst in water gas shi...

第九届全国氢能学术会议

作者： S.h.Kim J.h.Chung Y.T.Kim S.P.Yoon S.W.Nam T.h.Lim h.i.lee Seoul National University Korea institute of Science and Technology

Ni bulk catalyst had been studied as an alternative to substitute water gas shift catalyst in our previous *** surface properties of the Ni bulk catalyst have been studied by various characterization methods adding SiO and CeO to *** promoted catalysts have been applied to the water gas shift(WGS) reaction which converts CO to *** and CeO

关键词：

在线全文

cnki会议

学校读者我要写书评

暂无评论

水管理的统一化和近期韩国水坝政策转变

水管理的统一化和近期韩国水坝政策转变

水库大坝高质量建设与绿色发展——中国大坝工程学会2018学术年会

作者： G.M.Lim h.i.lee K.S.Jeong 韩国首尔韩国水资源公社

自2010年在四大河流上实施了大项目以来,韩国政府已努力将国家水坝建设规划政策转变为水坝管理规划政策,其认为水坝管理比水坝建设更为重要。韩国政府已于2013年6月编制了《水坝计划预审制度》,以更多地反思地方意见。同时,在这十年及... 详细信息

自2010年在四大河流上实施了大项目以来,韩国政府已努力将国家水坝建设规划政策转变为水坝管理规划政策,其认为水坝管理比水坝建设更为重要。韩国政府已于2013年6月编制了《水坝计划预审制度》,以更多地反思地方意见。同时,在这十年及下一个十年内水坝管理规划政策将取代水坝建设政策。

关键词：水坝建设政策转变水坝管理政策水坝计划预审制度

Superplasticity of fine-grained Mg-10Li alloy prepared by severe plastic deformation and understanding its deformation mechanisms

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： h.T.Jeong S.W.lee W.J.Kim Department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

The superplastic behavior and associated deformation mechanisms of a fine-grained Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)with a grain size of 3.2μm,primarily composed of the BCCβphase and a small amount of the hCPαphase,were examined in a temperature range of 473 K to 623 *** microstructural refinement of this alloy was achieved by employing high-ratio differential speed *** best superplasticity was achieved at 523 K and at strain rates of 10^(-4)-5×10^(-4)s^(-1),where tensile elongations of 550±600%were *** the heating and holding stage of the tensile samples prior to tensile loading,a significant increase in grain size was observed at temperatures above 573 ***,it was important to consider this effect when analyzing and understanding the superplastic deformation behavior and *** the investigated strain rate range,the superplastic flow at low strain rates was governed by lattice diffusion-controlled grain boundary sliding,while at high strain rates,lattice diffusion-controlled dislocation climb creep was the rate-controlling deformation *** was concluded that solute drag creep is unlikely to *** the late stages of deformation at 523 K,it was observed that grain boundary sliding led to the agglomeration of theαphase,resulting in significant strain *** mechanism maps were constructed forβ-Mg-Li alloys in the form of 2D and 3D formats as a function of strain rate,stress,temperature,and grain size,using the constitutive equations for various deformation mechanisms derived based on the data of the current tests.

关键词： Magnesium-lithium alloy Superplasticity Severe plastic deformation Grain size Grain growth

Pelleting and particle size reduction of corn increase net energy and digestibility of fiber,protein,and fat in corn-soybean meal diets fed to group-housed pigs

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2024年第4期15卷 1751-1760页

作者： Su A lee Diego A.Rodriguez Chad B.Paulk hans h.Stein Department of Animal Sciences University of IllinoisUrbanaIL 61801USA Department of Grain Sciences and industry Kansas State UniversityManhattanKS 66506USA

Background Reduction of the particle size of corn increases energy digestibility and concentrations of digestible and metabolizable *** may also reduce particle size of grain,but it is not known if there are interactions between particle size reduction and *** objective of this experiment was to test the hypothesis that particle size reduction and pelleting,separately or in combination,increase N balance,apparent total tract digestibility(ATTD)of fiber and fat,and net energy(NE)in corn-soybean meal diets fed to group-housed *** Six corn-soybean meal-based diets were used in a 3×2 factorial design with 3 particle sizes of corn(i.e.,700,500,or 300μm)and 2 diet forms(i.e.,meal or pelleted).Pigs were allowed ad libitum access to feed and ***-four castrated male pigs(initial weight:29.52 kg;standard diviation:1.40)were allotted to the 6 diets using a 6×6 Latin square design with 6 calorimeter chambers(i.e.,4 pigs/chamber)and 6 *** consumption and CO_(2)and Ch_(4)productions were measured during fed and fasting states and fecal and urine samples were *** Regardless of particle size of corn,the ATTD of gross energy(GE),N,and acid-hydrolyzed ether extract(AEE),and the concentration of NE were greater(Pin pelleted diets than in meal *** of diet form,the ATTD of GE,N,and AEE,and the concentration of NE were increased(linear;Ping the particle size of corn,but the increase was greater in meal diets than in pelleted diets(interaction;Pions Both pelleting and reduction of corn particle size increased nutrient digestibility and NE,but increases were greater in meal diets than in pelleted diets.

关键词： Corn Digestibility Feed technology Net energy Particle size Pelleting

A Review on Soft ionic Touch Point Sensors

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第6期7卷 193-208页

作者： Gibeom lee Donghyun lee Gwang-Bum im Younghoon lee Department of Mechanical Engineering Gachon University1342 SeongnamdaeroSujeong-guSeongnam 13120South Korea Department of Surgery Harvard Medical SchoolBostonMassachusetts 02115USA

A touch sensor is an essential component in meeting the growing demand for human-machine *** sensors have been developed in wearable,attachable,and even implantable forms to acquire a wide range of information from *** be applied to the human body,sensors are required to be biocompatible and not restrict the natural movement of the *** materials are a promising candidate for soft touch sensors due to their outstanding properties,which include high stretchability,transparency,ionic conductivity,and ***,this review discusses the unique features of soft ionic touch point sensors,focusing on the ionic material and its key role in the *** touch sensing mechanisms include piezocapacitive,piezoresistive,surface capacitive,piezoelectric,and triboelectric and triboresistive *** review analyzes the implementation hurdles and future research directions of the soft ionic touch sensors for their transformative potential.

关键词： iontronics ionic materials soft materials touch sensors

Anti-obesity effects of fucoidan from Sargassum thunbergii in adipocytes and high fat diet induced obese mice through inhibiting adipogenic specific transcription factor

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food Science and human Wellness 2024年第3期13卷 1608-1616页

作者： hyo-Geun lee h.h.A.C.K.Jayawardhana Fengqi Yang D.P.Nagahawaththa N.M.Liyanage Kyung-Mo Song Yun-Sang Choi Seung-hong lee You-Jin Jeon Min-Cheol Kang Department of Marine Life Sciences Jeju National UniversityJeju 63243Republic of Korea Marine Science institute Jeju National UniversityJeju 63333Republic of Korea Research Group of Food Processing Korea Food Research InstituteWanju 55365Republic of Korea Department of Pharmoceutical Engineering Soonchunhyang UniversityAsan 31538Republic of Korea

The prevalence of obesity has increased and is a health concern *** to the concerns regarding synthetic anti-obesity treatments,nowadays natural products become a *** studies proved that there is a potential to use marine algae as anti-obesity ***,in this study,the lipid inhibitory effect of crude polysaccharide of amyloglucosidase-assisted hydrolysate from Sargassum thunbergii(STAC)and its fucoidan fractions(STAFs)on 3T3-L1 cells and high-fat diet(hFD)-induced obese mice were *** to the results,the STAF3,showed the highest xylose content and exhibited significant inhibitory effects on lipid accumulation by downregulating adipogenic and lipogenic proteins in 3T3-L1 ***,oral supplementation with STAC significantly declined gain in body weight and fat weight,and serum lipid contents in an hFD-induced obesity mouse *** and chemical characterizations demonstrated that puritied STAF3 has consistent surface morphology and small particle size,with similar structural characteristics as commercial ***,these results indicate that STAC and purified STAF3 from Sargassum thunbergia is a potent source to develop as ananti-obesity agents or functional food products to counter obesity.

关键词： Sargassum thunbergii Fucoidan Anti-obesity Anti-steatosis

A case of post traumatic mitral chordae rupture mimicking acute respiratory distress syndrome

在线全文

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2024年第4期15卷 322-324页

作者： hülya Deniz Misir Nalan Demir Ferit Kasimzade Cansu Yahşi intensive Care Department Ankara Bilkent City HospitalAnkara 06800Turkiye intensive Care Department University of Health Sciences Ankara Bilkent City HospitalAnkara 06800Turkiye Cardiovascular Surgery Department Ankara Bilkent City HospitalAnkara 06800Turkiye Pulmonary Medicine Department University of Health Sciences Ankara Bilkent City HospitalAnkara 06800Turkiye

Traumatic mitral chordae rupture is a rare and known cause of acute mitral valve regurgitation and de novo heart *** pathologies in a trauma patient may mask the findings of de novo heart failure due to mitral chordae *** patients may also have other potential pre-diagnoses that could explain symptoms related to heart failure,such as tachycardia,circulatory shock,and acute *** possibility of traumatic chordae tendinea rupture being a preventable cause of mortality should be carefully evaluated.

关键词： rupture mitral acute

Enhancing identity Protection in Metaverse-Based Psychological Counseling System

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第1期78卷 617-632页

作者： Jun lee hanna lee Seong Chan lee hyun Kwon Department of Game Software Hoseo UniversityAsan-si31499Korea Yatav Enter Seoul04799Korea Department of Artificial intelligence and Data Science Korea Military AcademySeoul01805Korea

Non-face-to-face psychological counseling systems rely on network technologies to anonymize information regard-ing client ***,these systems often face challenges concerning voice data leaks and the suboptimal communication of the client’s non-verbal expressions,such as facial cues,to the *** study proposes a metaverse-based psychological counseling system designed to enhance client identity protection while ensuring efficient information delivery to counselors during non-face-to-face *** proposed systemincorporates a voicemodulation function that instantlymodifies/masks the client’s voice to safeguard their ***,it employs real-time client facial expression recognition using an ensemble of decision trees to mirror the client’s non-verbal expressions through their avatar in the metaverse *** system is adaptable for use on personal computers and smartphones,offering users the flexibility to access metaverse-based psychological counseling across diverse *** performance evaluation of the proposed system confirmed that the voice modulation and real-time facial expression replication consistently achieve an average speed of 48.32 frames per second or higher,even when tested on the least powerful smartphone ***,a total of 550 actual psychological counseling sessions were conducted,and the average satisfaction rating reached 4.46 on a 5-point *** indicates that clients experienced improved identity protection compared to conventional non-face-to-face metaverse counseling ***,the counselor successfully addressed the challenge of conveying non-verbal cues from clients who typically struggled with non-face-to-face psychological *** proposed systemholds significant potential for applications in interactive discussions and educational activities in the metaverse.

关键词： Metaverse counseling system face tracking identity protection