检索结果-南通市图书馆

Assessment of the Patient Movement for Lesion during Myocardial Perfusion SPECT Imaging by Cardiac Phantom

在线全文

学校读者我要写书评

暂无评论

World Journal of Nuclear Science and Technology 2015年第2期5卷 129-139页

作者： Eser Erim Turkan Ertay Ismail Evren mine Eren Cengiz Tasci Hatice Durak Department of Medical Physics Institute of Health Sciences Dokuz Eylul University Izmir Turkey Department of Nuclear Medicine School of Medicine Dokuz Eylul University Izmir Turkey Gama Nuclear Medicine Center Gaziantep Turkey

Movement of the patient during myocardial perfusion SPECT leads to some artifacts that make the interpretation difficult. In this study, myocardial perfusion imaging protocol was performed on a cardiac phantom and SPECT was performed by simulating patient movements. A lesion model with dimensions of 1.2 × 2 × 2 cm was created on the inferoseptal wall of the cardiac phantom. Imaging was done in circular orbits in 64 × 64 matrix and step and shoot mode. First set of images taken with no movement was referred as the reference image. During imaging, patient movement was simulated by moving the phantom in ±X and ±Y directions between the frames starting from 8th frame to 16th frame. At the end of imaging, Bull’s eye maps of images with movement were com-pared with Bull’s eye maps of reference images. Bull’s eye maps were evaluated by an experienced nuclear medicine physician. Shifting patient’s movement in all directions by ±1 and ±2 cm, dis-placed the localization of the lesion mildly and this did not hamper the evaluation. However, movements of ±3 or ±4 cm resulted in artifacts which in turn caused partial or no visualization of the lesion. In motion corrected images, the lesion could be evaluated in ±1 and ±2 cm movements while lesion could not be evaluated in ±3 and ±4 cm movements. As a result, movement greater than ±3 cm causes significant image artifacts and this should be considered as a potential source of error in myocardial perfusion studies.

关键词： SPECT Myocardial Perfusion Scintigraphy Cardiac Phantom

Application of Microcomputers and Software Systems in the Coal mine Subsurface Electromagnetic Wave Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Application of Microcomputers and Software Systems in the Co...

Detection of Promoter Hypermethylation of GSTP1 and CDH1 Genes and the Relationship of Histopathological Parameters of the Breast

International Symposium on Computer Applications in Geoscience

作者： Wang Zhenhua (Coal mine Scientific Research Institute of Hebei)

＜正＞Along with the development of our country is coal industry,the improvement of coal mining machinery,the continuous rise in coal output and the needs arising from safe produc- tion in coal mines,it would exent positive influence over coal mine production if it is possi- ble to verify beforehand those structures harmful to mining in under-well coalfaces and the put forward accurate predictions.

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

Advances in Breast Cancer Research 2018年第2期7卷 91-106页

作者： Onur Eroglu mine Erci Baysak Beyhan Durak Aras Oguz Cilingir Sevilhan Artan Department of Molecular Biology and Genetics Faculty of Art and Science Bilecik Seyh Edebali University Bilecik Turkey Biotechnology Research and Application Center Bilecik Seyh Edebali University Bilecik Turkey Department of Medical Genetics Faculty of Medicine Osmangazi University Eskisehir Turkey

Background: Breast cancer is the most common cancer in women. Histopathology plays an important part in determining the treatment strategy for women with breast cancer. GSTP1 plays an important role in protecting cells from cytotoxic and carcinogenic agents and it is expressed in normal tissues at variable levels in different cell types. CDH1 plays a critical role for establishment and maintenance of polarity and differentiation of epithelium during the development period. Also, it plays an important role in signal transduction, differentiation, gene expression, cellmotility and inflammations. Methods: In this study the promoter methylation levels of GSTP1 and CDH1 gene which are associated with breast cancer were investigated by technique of Methylation Sensitive High Resolution Melting Analysis (MS-HRM). We analysed primary tumor core biopsies from 80 high-risk primary breast cancer patients (tumors ≥ 2 cm and/or lymphatic metastase and/or distant metastases and/or under 40 years). Also the patients’ histopathologic types were associated with the methylation levels. Results: In our study the promoter hypermethylation status was observed at different rates;GSTP1 and CDH1 hypermethylation frequencies were 82% and 95% respectively. The promoter hypermethylation levels of the genes were found to be significant with lymph node positivity, ER positivity and HER2/neu negativity. Conclusion: Our study is important as being the first study that analyzes association between histopathologic type and GSTP1 and CDH1 gene promotor methylation status in Turkish population.

关键词： Breast Cancer Methylation GSTP1 CDH1 Histopathological Types

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

川南地区地下储气库选址初步设想

天然气工业 2003年第2期23卷 109-113页

作者：喻平仁西南油气田分公司蜀南气矿

天然气地下储气库具有储存量大、调节范围广、安全可靠、经久耐用、运行成本低等显著优点 ,长期以来已成为天然气消费大国储存、采集、调配天然气的基础设施 ,是大型输气干线系统配套不可缺少的重要组成部分。近年来 ,随着川渝气田的大... 详细信息

天然气地下储气库具有储存量大、调节范围广、安全可靠、经久耐用、运行成本低等显著优点 ,长期以来已成为天然气消费大国储存、采集、调配天然气的基础设施 ,是大型输气干线系统配套不可缺少的重要组成部分。近年来 ,随着川渝气田的大规模、远距离输送和天然气市场的迅速扩展 ,利用四川枯竭气藏建设地下储气库的问题也受到人们越来越大的关注。在调研国外地下储气库建设的基础上 ,针对我国各地区对天然气的需求状况 ,阐述了我国建造地下储气库的意义、建库选址原则和选址方案 ,对加速四川天然气地下储气库的规划。

关键词：川南地区地下储气库选址建设

构建“3341”内部市场化运作模式推动矿井综合管理水平全面提升——北皂煤矿内部市场化运作实践探索

在线全文

学校读者我要写书评

暂无评论

中国煤炭 2015年第12期41卷 130-132页

作者： Shandong Energy Longkou Mining Group Beizao Coal mine 山东能源龙矿集团北皂煤矿

总结了北皂煤矿内部市场化运作的具体做法,对煤矿企业内部市场化运作进行了实践探索。通过分析企业面临的发展形势,提出通过理念渗透、流程再造、健全机制,构建"3341"内部市场化运作模式,提高了企业成本管控能力和基层单位经营管控自主性。

关键词：内部市场化运作体系构建机制流程

Possible Application of the Medicinal Plant Hyoscyamus albus in Phytoremediation: Excess Copper Compensates for Iron Deficiency, Depending on the Light Conditions

在线全文

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2014年第26期5卷 3812-3822页

作者： Noriko Tamari Akemi mine Ari Sako Seiya Tamagawa Yasuhiro Tabira Yoshie Kitamura Graduate School of Science and Technology Nagasaki University Nagasaki Japan Faculty of Environmental Studies Nagasaki University Nagasaki Japan Graduate School of Fisheries and Environmental Studies Nagasaki University Nagasaki Japan Environmental Management Center Nagasaki University Nagasaki Japan

Seedlings of the medicinal plant Hyoscyamus albus were supplied with an excess of Cu to examine the possible application in phytoremediation. The seedlings were cultured in B5 medium supplied with basal 0.1 μM Cu and 200 μM Cu under various light conditions: short day (SD);long day (LD);and continuous light (CL). In addition, the effect of supplying 200 μM Cu under Fe deficiency was determined, in order to elucidate the interaction between Cu and Fe. Interestingly, Fe-deficiency symptoms that developed in plants grown with basic levels of Cu under LD almost disappeared when excess Cu was supplied. Plant growth mainly depended on the photo irradiation period (SD < LD^CL);and 200 μM Cu did not inhibit growth at all when Fe was available, whereas in the absence of Fe, CL caused damage to growth. Analysis of the Cu and Fe contents of the plants revealed that Cu was distributed equally in both the aerial parts and roots, whereas most of the Fe was found in the roots;under Fe deficiency, Cu accumulation in the roots apparently increased. Cu was mainly distributed in the soluble fraction, which included vacuoles and the cell-wall fraction. These results provide evidence indicating that H. albus seedlings are tolerant of Cu present in excess. Furthermore, excess Cu was able to compensate for Fe deficiency, depending on the light conditions. Continuous light inhibited this effect, probably as a result of the induction of Mn deficiency. The possible applications of this newly discovered cuprophyte are discussed.

关键词： Copper Accumulator Medicinal Plant Hyoscyamus albus

Evaluation of proximal tubule functions in children with COVID‑19:a prospective analytical study

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 Pediatrics 2022年第9期18卷 607-612页

作者： Fatma Devrim Elif Böncüoğlu Elif Kıymet ŞahikaŞahinkaya Ela Cem mine Düzgöl Aybüke Akaslan Kara KamileÖtiken Arıkan AslıKantar Ebru Yılmaz Nida Dinçel Nuri Bayram İlker Devrim Department of Pediatric Nephrology University of Health Sciences Dr.Behçet Uz Child Disease and Pediatric Surgery Training and Research HospitalİzmirTurkey Department of Pediatric Infectious Diseases University of Health Sciences Dr.Behçet Uz Child Disease and Pediatric Surgery Training and Research HospitalİzmirTurkey

Background There are limited numbers of studies focusing on renal efects of coronavirus disease 2019(COVID-19)infection and proximal tubular dysfunction in children with COVID-19 *** purpose of this study was to evaluate the functions of the proximal tubule in hospitalized children with confrmed acute *** The children who were hospitalized for confrmed COVID-19 were included in this prospective descriptive *** presence of at least two of the following four abnormalities was used to diagnose proximal tubule injury:abnormal tubular reabsorption of phosphate,normoglycemic glycosuria,hyperuricosuria,and *** A total of 115 patients were included in the *** a third of the individuals had elevated blood creatinine levels or *** addition,abnormal renal tubular phosphate loss measured by renal tubular phosphate loss was found in 10(8.7%)patients,as was hyperuricosuria in 28.6%.As a result,total proximal tubular dysfunction was found in 24(20.9%)*** One in every fve children with acute COVID-19 infections had proximal tubular dysfunction,according to our ***,the rate of proximal tubular dysfunction was lower than in adults,it should be *** recovery of proximal tubular function in children with COVID-19 should be followed.

关键词： Coronavirus disease 2019(COVID-19) Proteinuria Proximal tubular dysfunction Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) Tubular reabsorption of phosphate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Vcdromx虚拟光驱好帮手

学电脑 2000年第10期 75-76页

作者： mine

MICROSTRUCTURE CHANGE OF LASER SURFACE REMELTING WC-Co COATING

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1995年第4期5卷 142-145页

作者： Guo Jingjie Li Bangseng Zhao Jiuzhou Jia Jun Li Qingchun Wu Weimin Isao Miki Hideki Ishi(Schcol of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001)(Harbin Coal mine Machinery Institute Nikkei Techno-Research Company,Ltd,Japa Harbin Inst of Technology Harbin China

ＭＩＣＲＯＳＴＲＵＣＴＵＲＥＣＨＡＮＧＥＯＦＬＡＳＥＲＳＵＲＦＡＣＥＲＥＭＥＬＴＩＮＧＷＣ－ＣｏＣＯＡＴＩＮＧＧｕｏＪｉｎｇｊｉｅ；ＬｉＢａｎｇｓｅｎｇ；ＺｈａｏＪｉｕｚｈｏｕ；ＪｉａＪｕｎ；ＬｉＱｉｎｇｃｈｕｎ；Ｗ... 详细信息

ＭＩＣＲＯＳＴＲＵＣＴＵＲＥＣＨＡＮＧＥＯＦＬＡＳＥＲＳＵＲＦＡＣＥＲＥＭＥＬＴＩＮＧＷＣ－ＣｏＣＯＡＴＩＮＧＧｕｏＪｉｎｇｊｉｅ；ＬｉＢａｎｇｓｅｎｇ；ＺｈａｏＪｉｕｚｈｏｕ；ＪｉａＪｕｎ；ＬｉＱｉｎｇｃｈｕｎ；ＷｕＷｅｉｍｉｎ；ＩｓａｏＭｉｋｉ；...

关键词： WC-Co laser surface remelting microstructures