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Synthesis and magnetic studies of phthalato-bridged oxovanadium(Ⅳ) binuclear complexes

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Chinese Journal of Chemistry 1997年第4期15卷 336-342页

作者： YAN,Cui-WeiDepartment of Biology,Qufu Normal University,Qufu,Shandong 273165,ChinaLI,Yan-Tuan HAN,Qing-KuiDepartment of Chemistry,Qufu Normal University,Qufu,Shandong 273165,ChinaLIAO,Dai-ZhengDepartment of Chemistry,Nankai University,Tianjin 300071,China ost.queensu.ca

Six new μ-phthalato binuclear oxovanadium(IV) complexes,namely [(VO)2(PHTH)-(L)2]SO4 (L denotes 2,2'-bipyridine (bpy);1,10-phenanthroline (phen);4,4'-dimethyl-2,2'-bipyridine (Me2bpy);5-nitro-1,10-phenanthroline (NO2-phen);5-chloro-1,10-phenanthroline (Cl-phen) and 5-methyl-l,10-phenanthroline (CH3-phen),where PHTH is the phthalate dianion),have been synthesized and characterized by elemental analyses,IR,electronic spectra,magnetic moments at room temperature and molar conductivity *** temperature dependence of the magnetic susceptibility of complexes [(VO)2(PHTH)(Phen)2]SO4 (1) and [(VO)2(PHTH)(CH3-phen)2]SO4 (2) was measured in 4-300 K range and the observed data were successfully simulated by the equation based on the spin Hamiltonian operator,H--2JS1S2,giving the exchange integrals J=-12.8 cm-1 for 1 and J=-7.9 cm-1 for *** indicates an antiferromagnetic spin-exchange interaction between the metal ions within each molecule.

关键词： Phthalato-bridge binuclear oxovanadium(IV) complexes magnetism

A Study of the Technique of Linear Multiuser Detection in DS-CDMA Systems

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The Journal of China Universities of Posts and Telecommunications 2001年第3期8卷 77-78页

作者： WANG Yi directed by ZHOU Jiong-pan ost.tau.ac.il

The technique of linear multiuser detection in DS-CDMA systems isstudied in this paper. The Purpose is to find a receiver structurewith good per- Formance and moderate complexity, so that the re- Ceiver can efficiently suppress multiple-access inter- Ference (MAI)and multipath interference and has Good near-far resistant ability,which may improve The system's capability while reducing thereqruire- Ment for power control.

关键词： multiuser detection multiple-access interference fading channel minimum mean square error

A New Idea and Technique of Fiber Gratings and Photodetectors in Broad-band Fiber Communication Systems

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The Journal of China Universities of Posts and Telecommunications 2001年第3期8卷 79-80页

作者： LI Jian-xin directed by REN Xiao-ming ost.tau.ac.il

Contents of this thesis are supported by the National Natural Foudation of China under Contract No.69625101, and the item is named “Tunable Optical Technology in Wavelength Division Multiplexing (WDM)” and is under charge of Professor Ren Xiaomin. They are also supported by subject 307 in National Program “863”: i.e., RCE photodetectors (PDs) used in Wavelength Division Multiplexing. Fiber Bragg Gratings (FBGs) have emerged as important optical fiber passive components in a variety of light-wave applications. It is expected that FBGs will play a key role in the next generation of optical fiber communication systems and sensor fileds. Most of these applications are based on the narrow-band reflection of FBGs. In this thesis, transmission dispersion, nonlinearity and tunability of FBGs are studied. The main contents are as follows: Transmission dispersion of FBGs is studied and the capability of dispersion compensation of FBGs is calculated theoretically. In the experiments, the dispersions of 10 Gb/s at 11.1 km and 22.22 km are compensated successfully by an unchirped fiber grating for the first time in China and the tunable compensation is achieved for the first time internationally. The scheme of tunable dispersion compensation using cascaded fiber gratings in WDM is analyzed and designed. It is indicated that the dispersion compensation in transmission using uniform fiber gratings is a better and more effective compensation scheme compared with the tradifitonal dispersion compensation using chirped fiber gratings. It is originally proposed that people can simulate characteristics of a long distance optical fiber by a short uniform fiber grating. This is verified for the first time experimentally. In the experiment, a short grating (about 1 cm) operated in transmission is used to simulate pulse broadening of 11.1 km optical fiber. This method can be used to detect performance of long distance transmission of communication systems. It is originally proposed that peo

关键词： wavelength division multiplexing fiber Bragg grating transmission dispersion dispersion compensation

Alexa,let's train now!——A systematic review and classification approach to digital and home-based physical training interventions aiming to support healthy cognitive aging

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Journal of Sport and Health Science 2024年第1期13卷 30-46页

作者： Fabian Herold Paula Theobald Thomas Gronwald Navin Kaushal Liye Zou Eling D.de Bruin Louis Bherer Notger GMüller Research Group Degenerative and Chronic Diseases MovementFaculty of Health Sciences BrandenburgUniversity of PotsdamPotsdam 14476Germany Body-Brain-Mind Laboratory Shenzhen UniversityShenzhen 518060China Institute of Interdisciplinary Exercise Science and Sports Medicine MSH Medical School HamburgHamburg 20457Germany Department of Health Sciences School of Health&Human SciencesIndiana UniversityIndianapolisIN 46202USA Department of Health Sciences and Technology Institute of Human Movement Sciences and SportETH ZurichZurich 8093Switzerland Department of Neurobiology Care Sciencesand SocietyKarolinska InstituteStockholm 17177Sweden Department of Health OST-Eastern Swiss University of Applied SciencesSt.Gallen 9001Switzerland Montreal Heart Institute MontrealQC H1T 1C8Canada Department of Medicine Universite de MontrealMontrealQC H3T 1J4Canada Centre de Recherche de l'Institut Universitaire de Geriatrie de Montreal MontrealQC H3W 1W5Canada

Background:There is mounting evidence that regular physical activity is an important prerequisite for healthy cognitive ***,the finding that almost one-third of the adult population does not reach the recommended level of regular physical activity calls for further public health *** this context,digital and home-based physical training interventions might be a promising alternative to center-based intervention ***,this systematic review aimed to summarize the current state of the literature on the effects of digital and home-based physical training interventions on adult cognitive ***:In this pre-registered systematic review(PROSPERO;ID:CRD42022320031),5 electronic databases(PubMed,Web of Science,Psyclnfo,SPORTDiscus,and Cochrane Library)were searched by 2 independent researchers(FH and PT)to identify eligible studies investigating the effects of digital and home-based physical training interventions on cognitive performance in *** systematic literature search yielded 8258 records(extra17 records from other sources),of which 27 controlled trials were considered *** reviewers(FH and PT)independently extracted data and assessed the risk of bias using a modified version of the Tool for the assEssment of Study qualiTy and reporting in EXercise(TESTEX scale).Results:Of the 27 reviewed studies,15 reported positive effects on cognitive and motor-cognitive outcomes(i.e.,performance improvements in measures of executive functions,working memory,and choice stepping reaction test),and a considerable heterogeneity concerning study-related,population-related,and intervention-related characteristics was noticed.A more detailed analysis suggests that,in particular,interventions using online classes and technology-based exercise devices(i.e.,step-based exergames)can improve cognitive performance in healthy older *** one-half of the reviewed studies were rated as having a high risk of bias with respect

关键词： Brain Cognition Digital health Exercise-cognition Physical activity

Sub-Terahertz Channel Sounder: Review and Future Challenges

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China Communications 2023年第6期20卷 26-48页

作者： Yejian Lyu Pekka Kyosti Wei Fan Deparment of Electronic Systems Aalborg UniversityAalborg Ost 9220Denmark Center for Wireless Communication-Radio Technology(CWC-RT) Oulu UniversityOulu 90570Finland Keysight Technologies Finland Oy Oulu 90630Finland

Due to the large amount of unused and unexplored spectrum resources, the so-called subTerahertz(sub-THz) frequency bands from 100 to 300 GHz are seen as promising bands for the next generation of wireless communication systems. Channel modeling at sub-THz bands is essential for the design and deployment of future wireless communication systems. Channel measurement is a widely adopted method to obtain channel characteristics and establish mathematical channel models. Channel measurements depend on the design and construction of channel sounders. Thus, reliable channel sounding techniques and accurate channel measurements are required. In this paper, the requirements of an ideal channel sounder are discussed and the main channel sounding techniques are described for the subTHz frequency bands. The state-of-the-art sub-THz channel sounders reported in the literature and respective channel measurements are presented. Moreover, a vector network analyzer(VNA) based channel sounder, which supports frequency bands from 220 to330 GHz is presented and its performance capability and limitation are evaluated. This paper also discussed the challenge and future outlook of the sub-THz channel sounders and measurements.

关键词： radio propagation beyond 5G communication sub-terahertz channel sounding techniques

Changes of protein expression during tumorosphere formation of small cell lung cancer circulating tumor cells

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Oncology Research 2023年第1期31卷 13-22页

作者： SANDRA STICKLER BARBARA RATH MAXIMILIAN HOCHMAIR CLEMENS LANG LUKAS WEIGL GERHARD HAMILTON Institute of Pharmacology Medical University of ViennaViennaAustria Karl Landsteiner Institute of Lung Research and Pulmonary Oncology Klinik FloridsdorfViennaAustria Department of Trauma Surgery Sozialmedizinisches Zentrum OstDonauspitalViennaAustria Division of Special Anesthesia and Pain Medicine Medical University of ViennaViennaAustria

Small cell lung cancer(SCLC)is frequently disseminated and has a dismal prognosis with survival times of approximately two *** cancer responds well to initial chemotherapy but recurs within a short time as a globally chemoresistant *** tumor cells(CTCs)are held responsible for metastasis,the extremely high numbers of these cells in advanced SCLC allowed us to establish several permanent CTC cell *** CTCs are distinguished by the spontaneous formation of large spheroids,termed tumorospheres,in regular tissue *** contain quiescent and hypoxic cells in their interior and are associated with high chemoresistance compared to single cell *** CTC lines were compared for their expression of 84 proteins associated with cancer either as single cells or in the form of tumorospheres in Western blot *** the exception of the UHGc5 line,all other CTC lines express EpcaM and lack a complete EpcaM-negative,vimentin-positive epithelial-mesenchymal transition(EMT)*** formation of tumorospheres the expression of EpcaM,that mediates cell-cell adhesion is markedly *** such as E-cadherin,p27 KIP1,Progranulin,BXclx,Galectin-3,and Survivin showed variable changes for the distinct CTC cell *** conclusion,EpcaM presents the most critical marker for individual SCLC CTCs and the assembly of highly chemoresistant tumorospheres.

关键词： SCLC Spheroid Chemoresistance EpcaM Topotecan Epirubicin

穿行陌生之城:准备做“中国第八代电影导演”

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课堂内外（高中版）（A版） 2015年第1期 24-25页

作者：赵可儿 Creation ost(一骑当千)工作室

从16岁到20岁,我三次向父母提出退学。我想用我珍贵的青春,换几部视若珍宝的电影。从很早开始,＂成为中国第八代电影导演＂就成了我的愿望。提早离开校园对于我来说,应该算是必然。

关键词：中学生语文学习阅读知识课外阅读

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低位直肠癌括约肌间切除术及其远期预后

世界核心医学期刊文摘（胃肠病学分册） 2006年第3期2卷 23-24页

作者： Schiessel R. Novi G. Holzer B. 郑世成 Danube Hospital/SMZ-ost Langobardenstrasse 122 A1220 Vienna Austria.Dr

PURPOSE: Intersphincteric resection of low rectal tumors is a surgical technique extending rectal resection into the intersphincteric space. This procedure is performed by a synchronous abdominoperineal approach with mesorectal excision and excision of the entire or part of the internal sphincter. This study was designed to evaluate the long-term results of this method focused on continence function and oncologic results. METHODS: From 1984 to 2000, a total of 121 patients were operated on. The patients were evaluated prospectively according to a detailed preoperative and postoperative program. RESULTS: One hundred seventeen patients had rectal cancers, two had dysplastic villous adenomas, and two had carcinoid tumors. cancers were staged according to the Dukes classification (Stage A in 41 percent, Stage B in 28 percent, and Stage C in 31 percent; median distance from the anal margin, 3 (range, 1-5) cm). Postoperative complications were: one death because of pulmonary embolism, 5.1 percent developed an anastomotic fistula, one patient had a fistula to the bladder requiring reoperation, one patient with ileus needed relaparotomy as well as one for intra-abdominal hemorrhage and a small-bowel fistula. One patient developed a fistula after closing the protective colostomy. Five patients developed late strictures of the coloanal anastomosis. After a median follow-up of 72.86 months, 5.3 percent of patients developed local recurrence. The continence status was satisfactory with 16 patients (13.7 percent) showing continence for solid stool only, and 1 patient (0.8 percent) showing episodes of incontinence. A transient problem was a high stool frequency after closure of the protective stoma. CONCLUSIONS: Intersphincteric resection is a valuable procedure for sphincter-saving rectal surgery. We showed that this technique has satisfactory long-term results in functional and oncologic respects. An important prerequisite is a careful preoperative evaluation of local tumor spr

关键词：括约肌间直肠系膜绒毛状腺瘤外括约肌直肠切除直肠手术吻合口瘘结肠直肠吻合术小肠瘘不良

腕管综合征时正中神经的扩散张量成像和纤维束示踪的初步研究结果

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国际医学放射学杂志 2008年第A6期31卷 525-526页

作者： C.Khalil C.Hancart V.Le Thuc C.Chantelot D.Chechin A.Cotton 宋玲玲 Service de Radiologie ostéoarticulaire Höpital Roger Salengro CHRU de Lille 59037 France.

目的是为了显示在1.5TMR设备上进行人活体正中神经扩散张量成像和纤维束示踪的可行性,并评估健康志愿者与腕管综合征病人扩散成像的潜在不同。

关键词： MRI 扩散张量成像纤维束示踪腕管综合征正中神经