检索结果-南通市图书馆

Twins Yield Leukaemia Stem Cells

在线全文

学校读者我要写书评

暂无评论

当代外语研究 2008年第5期 6-8页

作者： heidi Ledford 刘真为

为了探究急性淋巴细胞性白血病的本源,研究者对一对双胞胎姐妹进行研究,她们其中一个被诊断出白血病,体内含有白血病干细胞前体细胞;另一个是健康的,但体内可能含有白血病干细胞前体细胞。通过对后者的研究可以推知癌症细胞病变前的状... 详细信息

为了探究急性淋巴细胞性白血病的本源,研究者对一对双胞胎姐妹进行研究,她们其中一个被诊断出白血病,体内含有白血病干细胞前体细胞;另一个是健康的,但体内可能含有白血病干细胞前体细胞。通过对后者的研究可以推知癌症细胞病变前的状况。这项研究将有助于设计新的治疗方案或对化疗效果的监控。

关键词：急性淋巴细胞性白血病前体细胞干细胞研究者细胞病变双胞胎化疗效果体内治疗方案探究

Making the most of intercultural education

在线全文

学校读者我要写书评

暂无评论

Making the most of intercultural education

Are globoseries glycosphingolipids SSEA-3 and-4 markers for stem cells derived from human umbilical cord blood?

作者： Layne heidi. Tr??mion Virginie. (1974-)Dervin fred

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Journal of Molecular Cell Biology 2011年第2期3卷 99-107页

作者： Heli Suila Virve Pitka¨nen Tia Hirvonen Annamari Heiskanen heidi Anderson Anita Laitinen Suvi Natunen Halina Miller-Podraza Tero Satomaa Jari Natunen Saara Laitinen Leena Valmu Research and Development Finnish Red Cross Blood ServiceR&DKivihaantie 7FIN-00310 HelsinkiFinland Glykos finland Ltd Viikinkaari 600790 HelsinkiFinland Department of Medical Chemistry and Cell Biology Institute of BiomedicineGothenburg UniversitP.O.Box 440SE 40530 GothenburgSweden

Umbilical cord blood(UCB)is an efficient and valuable source of hematopoietic stem cells(HSCs)for *** addition to HSCs it harbours low amounts of mesenchymal stem cells(MSCs).No single marker to identify cord blood-derived stem cells,or to indicate their multipotent phenotype,has been characterized so ***-3 and-4 are cell surface globoseries glycosphingolipid epitopes that are commonly used as markers for human embryonic stem cells,where SSEA-3 rapidly disappears when the cells start to *** SSEA-3 and-4 have also been observed in *** there is an ongoing discussion and variation of stem-cell markers between laboratories,we have now comprehensively characterized the expression of these epitopes in both the multipotent stem-cell types derived from *** have performed complementary analysis using gene expression analysis,mass spectrometry and immunochemical methods,including both flow cytometry and immunofluoresence ***-4,but not SSEA-3,was expressed on MSCs but absent from *** findings indicate that SSEA-3 and/or-4 may not be optimal markers for multipotency in the case of stem cells derived from cord blood,as their expression may be altered by cell-culture conditions.

关键词： umbilical cord blood hematopoietic stem cells mesenchymal stem cells SSEA-3 SSEA-4

Analysis of the Role of Sport in the Management Textbook： A Study of Sports Images in Organizational Behavious Textbooks from 1992 to 2011

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

Journal of Sports Science 2015年第5期3卷 246-256页

作者： heidi Weigand Albert J. Mills Centre for the Study of Sport and Health Saint Mary's University Halifax Nova Scotia B3H 3C3 Canada Department of Management Sobey School of Business Saint Mary "s University Halifax Nova Scotia B3H 3C3 Canada

This paper examines a selection of OB （organizational behaviour） textbooks from 1992 to 2012. Using both content analysis and semiotic language analysis, the purpose of this paper is to illustrate how sports images in textbooks--although used to ostensibly explain organizational behaviour concepts--can have implications for addressing issues of gender, race, ethnicity, disabilities, and intersectionality. We conclude that sports images and metaphors （along with other asides, examples, and illustrations） need to be used carefully and reflectively.

关键词： Sport intersectionality images organizational behaviour.

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

A Woman at the Wheel

时代英语（高一版） 2008年第3期 14-15,18页

作者： heidi 代万芳

The pits at the race track were very *** and engineers were working hard on their powerful racing *** racing team had its own pit:there was fuel and oil for the cars,a workshop,spare parts...The drivers were all young...

关键词：

在线全文

学校读者我要写书评

暂无评论

The Easiest of All

时代英语（高一版） 2008年第3期 16-18页

作者： heidi 代万芳

Clive was climbing an old tree on Butter *** father and Mr Drew were deep in conversation on a seat not far *** talk floated over to Clive."…North Dakota,capital Bismarck,"said Clive’s father."Yes;and of South Dakot... 详细信息

关键词： The Easiest of All

friedrich Ackermann’s scientific research program

在线全文

学校读者我要写书评

暂无评论

Geo-Spatial Information Science 2023年第2期26卷 141-150页

作者： Wolfgang förstner Department of Photogrammetry UniversityBonnGermany

We sketch friedrich Ackermann’s research program following the concept of Imre Lakatos,with some historical key developments in the theory and application of aerotriangulation and image *** research program,with its core being statistical estimation theory,has decisively influenced photogrammetry since the 60s,is still fully alive,and a challenge for today’s methods of image *** describe(1)Lakatos’concept of a scientific research program,with its negative and positive heuristics and(2)Ackermann’s research program,clearly made explicit in his PhD,with its mathematical model,the ability to predict theoretical precision and reliability,the potential of analyzing rigorous and approximate method,and the role of *** development of aerotriangulation,later augmented by image matching techniques,is closely connected to Ackermann’s successful attempts to integrate basic research and practical applications.

关键词： friedrich Ackermann scientific research program aerotriangulation image matching role of theory and application

Acoustic radiation force and torque on a lossless eccentric layered fluid cylinder

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 Physics B 2020年第11期29卷 140-145页

作者： f G Mitri Santa fe NM 87508USA

Exact analytical equations and computations for the longitudinal and transverse acoustic radiation force and axial torque components for a lossless eccentric liquid cylinder submerged in a nonviscous fluid and insonified by plane waves progressive waves(of arbitrary incidence in the polar plane)are established and computed *** modal matching method and the translational addition theorem in cylindrical coordinates are used to derive exact mathematical expressions applicable to any inner and outer cylinder sizes without any approximations,and taking into account the interaction effects between the waves propagating in the layer and those scattered from the cylindrical *** results show that longitudinal and transverse radiation force components arise,in addition to the emergence of an axial radiation torque component acting on the non-absorptive compound cylinder due to geometrical asymmetry as the eccentricity *** computations demonstrate that the axial torque component,which arises due to a geometrical asymmetry,can be positive(causing counterclockwise rotation in the polar plane),negative(clockwise rotation)or neutral(rotation cancellation)depending on the size parameter of the cylinder and the amount of ***,verification and validation of the results have been accomplished from the standpoint of energy conservation law applied to scattering,and based on the reciprocity theorem.

关键词： acoustic radiation force acoustic radiation torque non-viscous liquid eccentric cylinder

Operational feasibility study of stagnation pressure reaction control for a mid-caliber non-spinning projectile

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2023年第6期24卷 109-121页

作者： f.Bouquet The Netherlands Organisation for Applied Scientific Research Oude Waalsdorperweg 632597 AK Den Haagthe Netherlands

Controlled,guided munitions can reduce dispersion in the shot,while providing the capability of engaging both stationary and maneuvering *** Netherlands Organisation for Applied Scientific Research has developed a fin-less control technology called Stagnation Pressure Reaction Control(SPRC)that takes stagnation pressure air and directs it sideways to control non-spinning *** a previous study,this technology was demonstrated at Mach 2 wind-tunnel conditions to achieve up to 1.5°controllable angle of incidence for a non-spinning,aerodynamically unstable projectile-like test *** an operational scenario,the decelerating projectile will experience a decline in control force while the simultaneous forward shift of the center of pressure increases the need for control ***,angles of incidence exceeding 1.5°will be experienced under realistic flight conditions,especially against maneuvering *** work addresses these challenges and presents an operational feasibility study for a practical application of SPRC in a non-spinning mid-caliber gun-launched projectile,using experiment data on control latency and force of the earlier *** illustrates the combined effect of the control-and stability dynamics and underlines the potential of an SPRC projectile as a precisionoperation *** research revealed that SPRC technology can stabilize and control the hypothesized projectile in a direct fire scenario against stationary and maneuvering targets.

关键词： Supersonic projectile feasibility study Ram air Stagnation pressure reaction control Simulation Attitude control