检索结果-南通市图书馆

Journal of Sport and Health Science 2022年第2期11卷 194-201页

作者： junghoon lee Department of Kinesiology and Health Education College of EducationUniversity of Texas at AustinAustinTX 78712USA

Background:One of the most life-threatening comorbidities in elderly cancer patients is cancer cachexia,which is characterized by the ongoing loss of skeletal muscular strength and mass and is also associated with *** is a lack of recommendations for optimal resistance training(RT) for those *** purpose of this study was to systematically review and quantify the effects of RT on muscular strength and hypertrophy in elderly cancer ***: Five electronic databases were searched(until January 2020) for studies that met the following criteria:(i) cancer patients aged>60 years;(ii) structured and supervised RT intervention for>6 weeks;and(iii) measured muscular strength and/or ***:Thirteen studies(717 participants,average age=66 years) met the inclusion *** significantly increased muscular strength(mean effect size=0.87,95% confidence interval(95%CI):0.43-1.32,p <0.001) and did not significantly induce muscle hypertrophy(mean effect size=0.09,95%CI:-0.14 to 0.31,p=0.45).In subgroup analyses for muscle strength,higher weekly frequency was significantly associated with larger effect ***’ s test showed no significant publication bias for the 2 ***:The results suggest that RT improves muscular strength but does not significantly induce muscle hypertrophy in elderly cancer patients.

关键词： Cancer cachexia Muscle synthesis Sarcopenia Skeletal muscle

Effects of Craddition on Charpy impact energy in austenitic 0.45C-24Mn-(0,3,6)Cr steels

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2020年第15期47卷 21-30页

作者： Seok Gyu lee Bohee Kim Min Cheol Jo Kyeong-Min Kim junghoon lee Jinho Bae Byeong-Joo lee Seok Su Sohn Sunghak lee Center for Advanced Aerospace Materials Pohang University of Science and TechnologyPohang37673South Korea Steel Products Design Team Hyundai SteelDangjin31779South Korea Steel Products Research Group 1 Technical Research LaboratoriesPOSCOGwangyang57807South Korea Department of Materials Science and Engineering Korea UniversitySeoul02841South Korea

Effects of Cr addition(0,3,and 6 wt%) on Charpy impact properties of Fe-C-Mn-Cr-based steels were studied by conducting dynamic compression tests at room and cryogenic *** room temperature,deformation mechanisms of Charpy impacted specimens were observed as twinning induced plasticity(TWIP) without any transfo rmation induced plasticity(TRIP) in all the *** cryogenic temperature,many twins were populated in the Cr-added steels,but,interestingly,fine ε-martensite was found in the OCr steel,satisfying the Shoji-Nishiyama(S-N) orientation relationship,{111}γ//{0002}ε and γ//ε.Even though the cryogenic-temperature staking fault energies(SFEs) of the three steel were situated in the TWIP regime,the martensitic transformation was induced by Mn-and Cr-segregated *** the OCr steel,SFEs of low-(Mn,Cr) bands lay between the TWIP and TRIP regimes which were sensitively affected by a small change of *** dynamic compressive test results well showed the relation between segregation bands and the *** of Cr were known as not only increasing the SFE but also promoting the carbide *** order to identify the possibility of carbide formation,a precipitation kinetics simulation was conducted,and the predicted fractions of precipitated M23C6 were negligible,0.4-1.1×10-5,even at the low cooling rate of 10℃/s.

关键词： Austenitic high-Mn steels Charpy impact energy Split Hopkinson pressure bar Twinning induced plasticity(TWIP) Transformation induced plasticity(TRIP) Stacking fault energy(SFE)

The effects of single versus combined therapy using LIM-kinase 2 inhibitor and type 5 phosphodiesterase inhibitor on erectile function in a rat model of cavernous nerve injury-induced erectile dysfunction

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2019年第5期21卷 493-500页

作者： Min Chui Cho junghoon lee Juhyun Park Sohee Oh Ji Sun Chai Hwancheol Son Jae-Seung Paick Soo Woong Kim Department of Urology Seoul National University College of MedicineSMG-SNU Boramae Medical CenterSeoul 07061Korea Department of Urology Seoul National University College of MedicineSeoul National University HospitalSeoul 03080Korea Department of Biostatistics Seoul National University College of MedicineSMG-SNU Boramae Medical CenterSeoul 07061Korea

We aimed to determine whether combination of LIM-kinase 2 inhibitor(LIMK2i)and phosphodiesterase type-5 inhibitor(PDE5i)could restore erectile function through suppressing cavernous fibrosis and improving caver nous apoptosis in a rat model of cavernous nerve crush injury(CNCI).Seventy 12-week-old Sprague-Dawley rats were equally distributed into five groups as follows:(1)sham surgery(Group S),(2)CNCI(Group I),(3)CNCI treated with daily intraperitoneal administration of 10.0 mg kg^-1 LIMK2i(Group I+L),(4)daily oral administration of 20.0 mg kg-1 udenafil,PDE5i(Group I+U),and(5)combined administration of 10.0 mg kg^-1 LIMK2i and 20.0 mg kg^-1 udenafil(Group I+L+U).Rats in Groups I+L,I+U,and I+L+U were treated with respective regimens for 2 weeks after *** 2 weeks after surgery,erectile response was assessed using *** tissues were processed for histological studies and western *** I showed lower intracavernous pressure(ICP)/mean arterial pressure(MAP),lower area under the curve(AUC)/MAP,decreased immunohistochemical staining for alpha-smooth muscle(SM)actin,higher apoptotic index,lower SM/collagen ratio,increased phospho-LIMK2-positive fibroblasts,decreased protein kinase B/endothelial nitric oxide synthase(Akt/eNOS)phosphorylation,increased LIMK2/cofilin phosphorylation,and increased protein expression of fibronectin,compared to Group *** all three treatment groups,erectile responses,protein expression of fibronectin,and SM/collagen ratio were *** I+L+U showed greater improvement in erectile response than Group I+*** content and apoptotic index in Groups I+U and I+L+U were improved compared to those in Group ***,Group I+L did not show a significant improvement in SM content or apoptotic *** number of phospho-LIMK2-positive fibroblasts was normalized in Groups I+L and I+L+U,but not in Group I+***/eNOS phosphorylation was improved in Groups I+U and I+L+U,but not in Group I+***2/cofilin phosphorylation was i

关键词： apoptosis erectile dysfunction fibrosis LIM kinase phosphodiesterase

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mechanical Biology

Mechanical Biology

解决高度分割的车载自组网络连通性问题的路侧单元最优化调度方案

2010年第四届微纳米海峡两岸科技暨纳微米系统与加工制备中的力学问题研讨会

作者： junghoon lee Seoul National University

In his inspiring talk at the JPL in 1959,Richard Feynman envisioned the capability of manipulating individual atoms for achieving the ultimate limit of memory capacity.30 years later this dream was realized when scientists at IBM’s Almaden Research Center successfully positioned 35 xenon atoms to write letters "IBM" with a scanning tunneling microscope. Without the details behind the scene and the limitations ruthlessly

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

计算机工程与科学 2012年第1期34卷 1-10页

作者：邹凤仲姣菲伍伟丽堵丁柱 lee junghoon 达拉斯Real Time Resolutions公司美国得克萨斯州达拉斯75235 得州大学达拉斯分校计算机科学系美国得克萨斯州达拉斯75080 济州国立大学计算机科学与统计系韩国济州690756

车载自组网络VANET是一种拥有高度动态拓扑结构的移动自组网络。为了解决其频繁的网络分割问题,最新研究提出使用一种特殊的称为路侧单元RSU的基础设施部署于道路两侧来提高VANET连通性。本文主要研究RSU调度中的节能降耗问题:给定一组... 详细信息

车载自组网络VANET是一种拥有高度动态拓扑结构的移动自组网络。为了解决其频繁的网络分割问题,最新研究提出使用一种特殊的称为路侧单元RSU的基础设施部署于道路两侧来提高VANET连通性。本文主要研究RSU调度中的节能降耗问题:给定一组路侧单元,我们的目标是寻找指定时段内打开或关闭RSU的最优调度,以确保RSU系统所消耗的总能量最小化,同时维持VANET系统网络连通性。我们将这一问题分解为两个子问题,即网络瞬像调度问题和网络瞬像选取问题。网络瞬像调度问题用于决定某时刻VANET网络瞬像中所需的连通状态RSU的最小值,而网络瞬像选取问题则用于决定系统需要在哪些时刻更新网络瞬像。通过对这两个子问题的研究,我们最终给出关于RSU调度问题的完全解,并通过理论分析与实验结果证明本文的算法可以在保持VANET连通性的同时明显地节能降耗。

关键词：车载自组网络路侧单元调度最优化节能降耗

Available Power Analysis for Background Tasks on Ubiquitous Sensor and Actuator Networks

在线全文

学校读者我要写书评

暂无评论

Available Power Analysis for Background Tasks on Ubiquitous ...

Substructure imaging of heterogeneous nanomaterials with enhanced refractive index contrast by using a functionalized tip in photoinduced force microscopy

The second International Conference of Electrical and Electronics Engineering(ICEEE 2011)

作者： junghoon lee Cheol Min Kim Ho-Young Kwak Jikwang Han Dept.of Computer Science and Statistics Jeju National University Dept.of Computer Education Jeju National University Dept.of Computer Engineering Jeju National University

This paper first presents the sensor data processing framework integrating a power consumption scheduler for control actions, and then analyzes the available power for background tasks which are continuously performed using the remaining power. As the scheduler is designed to reduce the peak load for the given task set, it can make flatter the consumption level of dynamic tasks activated by the event detection. The experiment result obtained from the prototype implementation reveals that the proposed scheme can improve the minimum available power by up to 17.9 %, compared with the Earliest scheduling scheme, having a smaller standard deviation over the slots included in a scheduling window. Hence, our framework can achieve cost savings as the sensor network can purchase a smaller amount of energy from a utility company and can be built with lower power transmission capability.

关键词： smart grid power consumption control peak reduction background task available power

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Light(Science & Applications) 2018年第1期7卷 322-330页

作者： junghoon Jahng Heejae Yang Eun Seong lee Center for Nanocharacterization Korea Research Institute of Standards and Science(KRISS)Daejeon 34113Republic of Korea Department of Materials Engineering Advanced Fibrous Materials LaboratoryUniversity of British ColumbiaVancouverBC V6T 1Z4Canada

The opto-mechanical force response from light-illuminated nanoscale materials has been exploited in many tip-based imaging applications to characterize various heterogeneous *** a force can have two origins:thermal expansion and induced *** thermal expansion reflects the absorption of the material,which enables one to chemically characterize a material at the absorption *** induced dipole interaction reflects the local refractive indices of the material underneath the tip,which is useful to characterize a material in the spectral region where no absorption resonance occurs,as in the infrared(IR)-inactive ***,the dipole force is relatively small,and the contrast is rarely discernible for most organic materials and biomaterials,which only show a small difference in refractive indices for their *** this letter,we demonstrate that refractive index contrast can be greatly enhanced with the assistance of a functionalized *** the enhanced contrast,we can visualize the substructure of heterogeneous biomaterials,such as a polyacrylonitrile-nanocrystalline cellulose(PAN-NCC)*** substructural visualization,we address the issue of the tensile strength of PAN-NCC fibers fabricated by several different mixing *** understanding from the present study will open up a new opportunity to provide enhanced sensitivity for substructure mapping of nanobiomaterials,as well as local field mapping of photonic devices,such as surface polaritons on semiconductors,metals and van der Waals materials.

关键词： refractive biomaterials functional

Characterizing and controlling infrared phonon anomaly of bilayer graphene in optical-electrical force nanoscopy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第12期12卷 2700-2710页

作者： junghoon Jahng Sunho lee Seong-Gu Hong Chang Jun lee Sergey G.Menabde Min Seok Jang Dong-Hyun Kim Jangyup Son Eun Seong lee Hyperspectral Nano-imaging Team Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea Department of Aerospace Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Multiscale Mechanical Properties Measurement Team Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea School of Mechanical Engineering Chonnam National UniversityGwangju 61186Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Functional Composite Materials Research Center Korea Institute of Science and TechnologyJeonbuk 55324Republic of Korea SKKU Advanced Institute of Nanotechnology Sungkyunkwan UniversitySuwon 16419Republic of Korea Division of Nano&Information Technology KIST SchoolUniversity of Science and TechnologySeoul 02792Republic of Korea

We,for the first time,report the nanoscopic imaging study of anomalous infrared(IR)phonon enhancement of bilayer graphene,originated from the charge imbalance between the top and bottom layers,resulting in the enhancement of E1u mode of bilayer graphene near 0.2 *** modified the multifrequency atomic force microscope platform to combine photo-induced force microscope with electrostatic/Kelvin probe force microscope constituting a novel hybrid nanoscale optical-electrical force imaging *** enables to observe a correlation between the IR response,doping level,and topographic information of the graphene *** the nanoscale spectroscopic image measurements,we demonstrate that the charge imbalance at the graphene interface can be controlled by chemical(doping effect via Redox mechanism)and mechanical(triboelectric effect by the doped cantilever)***,we can also diagnosis the subsurface cracks on the stacked few-layer graphene at nanoscale,by monitoring the strain-induced IR phonon *** approach provides new insights into the development of graphene-based electronic and photonic devices and their potential applications.

关键词： electrical force optical

Effects of Lizhong Tang on gastrointestinal motility in mice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2016年第34期22卷 7778-7786页

作者： Min Cheol lee Wooram Ha Jinhyeong Park junghoon Kim Yunjin Jung Byung Joo Kim Division of Longevity and Biofunctional Medicine Healthy Aging Korean Medical Research CenterSchool of Korean MedicinePusan National UniversityYangsan 50612South Kerea Division of Pharmacology School of Korean MedicinePusan National University Yangsan 50612South Kerea College of Pharmacy Pusan National UniversityBusan 46241 South Korea

AIM To investigate the effects of Lizhong Tang,a traditional Chinese medicine formula,on gastrointestinal motility in *** The in vivo effects of Lizhong Tang on GI motility were investigated by measuring the intestinal transit rates(ITRs) and gastric emptying(GE) values in normal mice and in mice with experimentally induced GI motility dysfunction(GMD).RESULTS In normal ICR mice,the ITR and GE values were significantly and dose-dependently increased by Lizhong Tang(ITR values: 54.4% ± 1.9% vs 65.2% ± 1.8%,P < 0.01 with 0.1 g/kg Lizhong Tang and 54.4% ± 1.9% vs 83.8% ± 1.9%,P < 0.01 with 1 g/kg Lizhong Tang; GE values: 60.7% ± 1.9% vs 66.8% ± 2.1%,P < 0.05 with 0.1 g/kg Lizhong Tang and 60.7% ± 1.9% vs 72.5% ± 1.7%,P < 0.01 with 1 g/kg Lizhong Tang). The ITRs of the GMD mice were significantly reduced compared with those of the normal mice,which were significantly and dose-dependently reversed by Lizhong Tang. Additionally,in loperamide- and cisplatin-induced models of GE delay,Lizhong Tang administration reversed the GE *** These results suggest that Lizhong Tang may be a novel candidate for development as a prokinetic treatment for the GI tract.

关键词： Lizhong Tang Gastrointestinal disorders Motility Intestinal transit rate Gastric emptying

Design and implementation of user information sharing system using location-based services for social network services

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Measurement Science and Instrumentation 2012年第2期3卷 169-172页

作者： Donsu lee junghoon Shin Sangjun lee Computer Science Soongsil University

Internet takes a role as a place for communication between people beyond a space simply for the acquisition of ***,social network service(SNS)reflecting human’s basic desire for talking and communicating with others is focused on around the *** location-based service(LBS)is a service that provides various life conveniences like improving productivity through location information,such as GPS and *** paper suggests an application combining LBS and SNS based on Android *** using smart phone which is personal mobile information equipment,it combines location information with user information and SNS so that the service can be *** also maximizes sharing and use of information via twit based on locations of *** proposed system is aims for users to show online identity more actively and more conveniently.

关键词： android OS social network service(SNS) location-based service(LBS) Google maps Twitter Open API