检索结果-南通市图书馆

Retrodiscal epidural approach with navigating needle and Transforaminal epidural endoscopic laser annuloplasty（TELA）

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

Retrodiscal epidural approach with navigating needle and Tra...

Cancer stem cell markers CD133 and CD24 correlate with invasiveness and differentiation in colorectal adenocarcinoma

2016中国医师协会疼痛医师专业委员会年会

作者： lee,Pyung bok Seoul National Univeristy Bundang Hospital

＜正＞Introduction Transforaminal epidural steroid injection （TFESI） is known for delivering at the exact location of nerve root compression by herniated intervertebral disc causing *** is largely categorized according to two differing methods,based on the needle entry:subpedicular approach and retrodiscal approach.

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

World Journal of Gastroenterology 2009年第18期15卷 2258-2264页

作者： Dongho Choi Hyo Won lee Kyung Yul Hur Jae Joon Kim gyeong-Sin Park Si-Hyong Jang Young Soo Song Ki-Seok Jang Seung Sam Paik Department of Surgery College of MedicineSoonchunhyang University140-743 SeoulSouth Korea Department of Surgery Chi Hang Hospital140-741 SeoulSouth Korea Department of Pathology College of MedicineCatholic University137-040 SeoulSouth Korea Department of Pathology College of MedicineHanyang University133-790 SeoulSouth Korea

AIM:To verify that CD markers are available for detecting cancer stem cell populations and to evaluate their clinical significance in colon ***:Immunohistochemistry for CD133,CD24 and CD44 was performed on the tissue microarray of 523 colorectal *** records were reviewed and clinicopathological analysis was ***:In colorectal adenocarcinoma,128 of 523 cases(24.5%) were positive and 395 cases(75.5%) were negative for CD133 *** hundred and sixty-four of 523 cases(50.5%) were positive and 259 cases(49.5%) were negative for CD24 *** hundred and two of 523 cases(96%) were negative and 21 cases(4%) were positive for CD44 *** clinicopathological analysis,CD133 expression was present more in male patients(P = 0.002) and in advanced T stage cancer(P = 0.024).Correlation between CD24 expression and clinicopathological factors was seen in the degree of differentiation(P = 0.006).Correlation between CD44 expression and clinicopathological factors was seen in the tumor size(P = 0.001).Survival was not significantly related to CD133,CD24 and CD44 ***:CD markers were related to invasiveness and differentiation of colorectal ***,CD expression was not closely related to survival.

关键词： CD133 CD24 CD44 Colon cancer stemcells Colorectal adenocarcinoma

Anti-Obesity Effects of Chang-Chul-Eui-Ee-ln-Tang(苍术薏苡仁汤) in Female Rats with Diet-Induced Obesity

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

Chinese Journal of Integrative Medicine 2011年第12期17卷 925-932页

作者： Sunmin Park Jung bok lee James W.Daily Department of Food and Nutrition Obesity/Diabetes Research InstitutesHoseo UniversityAsan(336-795)South Korea Daily Manufacturing IncRockwellNC

Objective： To investigate the effects of Chang-ChuI-Eui-Ee-ln-Tang （苍术薏苡仁汤, CCEET）, modified CCEET （MCCEET）, and Semen Coicis （SC, a major component of CCEET） on energy and glucose homeostasis. The possible mechanism of action of CCEET was also determined. Methods： A total of 100 Sprague Dawley female rats were randomly assigned to 5 groups, with 20 in each group. Rats in 4 groups were fed with a high fat diet supplementation （2 g/kg body weight）, and water extracts of CCEET, MCCEET, SC, and cellulose （negative control）, respectively. The last group was fed with a low-fat diet as a positive control. Results： CCEET and MCCEET decreased body weight and body fat （mesenteric and retroperitoneal fat） more than SC. This decrease was due to decreased energy intake and increased energy expenditure and fat oxidation. The improvement in energy homeostasis was associated with the enhancement of the hypothalamic leptin signalling pathway involving potentiating the phosphorylation of the signal transducer and activator of transcription-3, as well as attenuating the phosphorylation of 5＇ adenosine monophosphate-activated protein kinase （AMPK）. Both CCEET and MCCEET improved glucose tolerance without changing serum insulin levels during an oral glucose tolerance test but MCCEET had a better effect than CCEET. Conclusions： Both CCEET and MCCEET safely exerted anti-obesity effects by enhancing energy balance in female rats with diet-induced obesity; MCCEET showed a better effect on glucose homeostasis.

关键词： Chang-ChuI-Eui-Ee-ln-Tang Semen Coicis leptin signal transducer and activator oftranscription-3 5' adenosine monophosphate-activated protein kinase hypothalamus

A dynamic infiltration technique to synthesize nanolayered cathodes for high performance and robust solid oxide fuel cells

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第7期31卷 201-210,I0006页

作者： Saeed Ur Rehman Ho-Seon Song Hye-Sung Kim Muhammad Haseeb Hassan Dong-Woo Joh Rak-Hyun Song Tak-Hyoung Lim Jong-Eun Hong Seok-Joo Park Seung-bok lee High Temperature Energy Conversion Laboratory Korea Institute of Energy Research152Gajeong-roYuseong-gu.Daejeon34129.Republic of Korea Department of Advanced Energy and System Engineering University of Science and Technology.217 Gajeong-ro.Yuseong-gu.Daejeon 34113.Republicof Korea

Solution infiltration is a popular technique for the surface modification of solid oxide fuel cell(SOFC)***,the synthesis of nanostructured SOFC cathodes by infiltration is a tedious process that often requires several infiltration and high temperature(≥500℃)calcination ***,fabricating large-area nanostructured cathodes via infiltration still requires serious ***,we propose a facile and scalable urea assisted ultrasonic spray infiltration technique for nanofabrication of SOFC *** is demonstrated that by using urea as a precipitating agent,the calcination after each infiltration cycle can be omitted and the next infiltration can be performed just after a drying step(≤100℃).Finally,the precipitates can be converted into a desired catalyst phase in single calcination thus,a nanostructured cathode can be fabricated in a much faster *** is also shown that the low calcination temperature of the cathode(≤900℃)can produce highly durable SOFC performance even without employing a Ce_(0.9)Gd_(0.1)O_(2)(GDC)diffusion barrier layer which provides the ease of SOFC *** coupling with an ultrasonic spray technique,the urea assisted infiltration can be scaled up for any desired cathode ***_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3) nanolayered cathode was fabricated and it was characterized by scanning electron microscope(SEM),X-ray diffraction(XRD),and transmission electron microscopy(TEM)*** showed the formation of a nanolayer cathode just after 5 cycles of the urea assisted infiltration while the XRD and TEM confirmed the phase and stoichiometric uniformity of the 100 nm cathode *** effectiveness of the newly developed technique was further verified by the stable operation of a GDC buffer layer free SOFC having an active cathode area of 25 cm^(2) during a 1200 h durability *** research outcomes propose urea assisted ultrasonic spray infiltration as a facile,scalable,and commercially viable method

关键词： Solid oxide fuel cell(SOFC) Cathode Infiltration Nanolayer Nanofabrication GDC barrier layer free SOFC

Improved sweat gland function during active heating in tennis athletes

在线全文

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2016年第4期5卷 443-447页

作者： Jeong-Beom lee Soon-bok Na Tae-Wook Kim Department of Physiology College of MedicineSoonchunhyang University Department of Exercise Rehabilitation Welfare Gachon University Global Graduate School of Healthcare Soonchunhyang University

Background：Relatively few studies on the peripheral sweating mechanisms of trained tennis athletes have been *** purpose of this study was to compare the sweating capacities of tennis athletes against untrained subjects（controls）.Methods：Thirty-fi e healthy male volunteers participated including 15 untrained subjects and 20 trained tennis athletes（nationally ranked）.Active heat generation was performed for 30 min（running at 60%VO2max） in a climate chamber（temperature,25.0°C ± 0.5°C;relative humidity,60% ± 3%,termed active heating）.Sweating data（local sweat onset time,local sweat volume,activated sweat glands,sweat output per gland,whole body sweat loss volume） were measured by the capacitance hygrometer-ventilated capsule method and starch-iodide *** body temperature was calculated from tympanic and skin ***：Local sweat onset time was shorter for tennis athletes（p〈0.001）.Local sweat volume,activated sweat glands of the torso and limbs,sweat output per gland,and whole body sweat loss volume were significant y higher for tennis athletes than control subjects after active heating（p〈0.001）.Tympanic and mean body temperatures were lower among tennis athletes than controls（p〈0.05）.Conclusion：These results indicate that tennis athletes had increased regulatory capacity of their sweat gland function.

关键词： Activated sweat glands Active heating Sweat onset time Sweat output Sweating function Tennis athletes

Experimental Study of Material Removal Process of Fused Silica Glass Using MR Jet Polishing System

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2012年第S1期19卷 604-607页

作者： lee Jung-Won CHO Yong-Kyu CAI Yue CHOI Seung-bok CHO Myeong-Woo Department of Mechanical Engineering Inha UniversityIncheon 402-751Korea

Recently,there has been an investigation of polishing processes that has considered new ultra-precision polishing technology for micro parts and optical parts such as those with aspheric and complex *** suitable means of polishing complex shapes is to use a jet of abrasive ***,aerodynamic disturbances and radial spreading are generated by the unstable polishing process of the jet on the surface of the workpiece when it is being polished.A method of jet stabilization has been proposed in which the original nozzle form of a jet of magnetorheological(MR)fluid contains abrasive particles that are magnetized using a *** paper details the design of an MR jet polishing system that uses an electromagnet,a nozzle,and a hydraulic unit to stabilize a slurry jet based on MR fluid, Second,for silica glass,the polishing spot and section profile are analyzed and the effect of the MR fluid jet polishing process is *** results of the experiment show that the removal profile is W-shaped and that,in this case,a stable can be proof of a distance of several tens of millimeters from the *** results show the possibility of applying the proposed polishing method using MR fluids in ultra-precision micro and optical parts production processes. MR jet polishing shows great potential for use as a new type of precision surface polishing *** particular,this is a highly valuable process for the polishing of complex shapes such as micro parts,concaves parts,and cavities.

关键词： magnetorheological(MR)fluids optical part fused silica glass material removal rate MR jet polishing system

SOME PERMUTING TRINOMIALS OVER FINITEFIELDS

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 1997年第3期17卷 250-254页

作者： June bok lee(Dept. of Math., Yonsei University, Seoul, 120-749,Korea)Young Ho Park (Dept. of Math., Kangwon National University, Chuncheon, 200-701,Korea) Dept. of Math. Yonsei University Seoul 120-749 Korea Dept. of Math. Kangwon National University Chuncheon 200-701 Korea

Trinomial permutation polynomials of the form xr(ax2s + bxs + c) over Fq have been studied where 3|q-1 and s = (q-1)/3. We derive some necessary and sufficient conditions for these trinomials to be permutation polynomials, and construct some examples. Moreover, we discuss the relationship between permutation trinomials of the given type over a tower of finite fields.

关键词： Math SOME PERMUTING TRINOMIALS OVER FINITEFIELDS

An Evaluation of the Machinability of Nitinol SMA Using Combined Process of EP and MR Polishing

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2012年第S2期19卷 629-632页

作者： HA Seok-Jae SHIN Bong-Cheol CHO Myeong-Woo lee Eun-Sang CHOI Seung-bok Department of Mechanical Engineering Inha University Samsung Electro-Mechanics

Nitinol,a shape memory alloy(SMA),is manufactured from titanium and *** is employed in various fields for use in devices such as micro sensors,ultra-precision devices and satellite *** is highly recommended as a material in medical stents for insertion into the body because it has excellent organic ***,because they are intended to be inserted into the human body,products such as medical stents require a high-quality *** nitinol has more of the characteristics of titanium than of nickel,one of its drawbacks is that heat generated in nitinol during machining is not discharged smoothly,leading to areas of inner stress which occur when traditional machining methods are *** overcome this difficulty,various non-traditional machining methods,including non-contact machining,have been investigated for use with *** study is focused on the application of an effective fabrication method that combines electrolytic polishing(EP)and MR polishing to improve the surface integrity of nitinol through a series of *** roughness variations of the polished nitinol were investigated by changing the imposed polishing conditions of EP and MR polishing,***,the variations in the surface roughness were observed with polished previously performed via the EP process.

关键词： electrolytic polishing(EP) magnetorheological(MR)fluids Ni-Ti alloy shape memory alloy(SMA) surface roughness

Characteristics of Micro Electrochemical Polishing to Improve the Surface Quality of the Stainless Steel Tube

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2012年第S2期19卷 1137-1140页

作者： Seung-Gun Choi Sung-Hyun Kim Eun-Sang lee Seung-bok Choi Myeong-woo Cho School of Mechanical Engineering Inha University Department of Mechanical Engineering Inha University

Electrochemical polishing is the anodic dissolution process without contact with tools,is a surface treatment method to make a surface planarization using an electrochemical reaction with low applied *** surface quality is mainly affected by the many process *** improve the surface quality,the control of parameters is very *** aim of this study is to investigate the characteristic of electrochemical polishing effect for inner diameter of Stainless Steel *** order to analyze the characteristics of surface quality were measured in terms of temperature, applied current and machining *** investigation can enhance the surface quality of inner diameter Stainless Steel ***,we have verified improved results by using selected optimal conditions.

关键词： Electrochemical polishing surface quality applied current