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超声用于监护治疗病房的意义

放射学实践 1991年第1期6卷 21-25页

作者： w.Pichler H.Jantsch P.Barton w.frank A.Maier G.Lechner 王天才 Rntgenabteilung der Ⅰ. Chirurgischen Universittsklinik wien 同济医科大学附属同济医院

有经验的医生掌握超声检查不仅对初筛诊断,而且对重症患者具有重要的价值。超声亦适合术后病人的检查,如严重外伤。超声检查不仅扩大了治疗的范围,且明显地方便了监护病房患者的诊断。

关键词：超声监护病房

口服氮-氨甲酰谷氨酸补饲增加仔猪骨骼肌中的蛋白质合成

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饲料与畜牧（新饲料） 2012年第12期 12-16页

作者： Jason w.frank Jeffery Escobar Hanh V.Nguyen 赵颖不详中国农业大学动物科技学院

文章研究了补饲氮-氨甲酰谷氨酸(N-Carbamylglutamate,NCG,一种模拟内源性氮-乙酰谷氨酸,合成精氨酸的激活剂)提高哺乳仔猪的生长率的潜在机制。试验选取体重接近、性别相同的2组仔猪进行口服试验,每12h向日粮中分别添加0mg/kg(对照组)... 详细信息

文章研究了补饲氮-氨甲酰谷氨酸(N-Carbamylglutamate,NCG,一种模拟内源性氮-乙酰谷氨酸,合成精氨酸的激活剂)提高哺乳仔猪的生长率的潜在机制。试验选取体重接近、性别相同的2组仔猪进行口服试验,每12h向日粮中分别添加0mg/kg(对照组)和50mg/kgNCG(试验组),试验期为7d。试验仔猪(n=32,Bw=3kg)禁食7d并进行试验前处理。整夜禁食后,分别在0min和60min饲喂仔猪NCG和水(对照组)。之后分别在第0min和60min灌服试验组仔猪含NCG的母乳。在第60min,给仔猪灌服[3H]水浸剂量的苯丙氨酸,并在第90min宰杀,用以测定组织蛋白的合成。与对照组相比,NCG处理组的仔猪体重在7d内增加了28%(P<0.001),与禁食的仔猪相比,未禁食仔猪的背最长肌、腓肠肌、十二指肠的蛋白质合成速率均较高(P<0.001)。与对照组相比,NCG试验处理组仔猪背最长肌和腓肠肌的蛋白质合成速率分别提高了30%(P=0.05)和21%(P=0.068)。同时,补饲NCG的仔猪血浆中精氨酸和生长激素的浓度高于对照组。结果显示,补饲氮-氨甲酰谷氨酸可以提高血浆中精氨酸和生长激素水平,促进哺乳仔猪生长率和肌肉蛋白质合成的增加。

关键词：氮-氨甲酰谷氨酸仔猪骨骼肌蛋白质合成

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银河下的夜空

中外文摘 2013年第11期 73-73页

作者： Jacob w.frank

Decoding complexity: the need to enhance precision and streamline spatial understanding in neuroscience

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Neural Regeneration Research 2025年第3期20卷 801-802页

作者： Sameehan Mahajani Armita Salahi Brenda Gonzalez Charlotte Nelson frank Hsiung Biology&Applications Division NodexusSan JoseCAUSA

Neuroscience is the ultimate frontier in our quest for a comprehensive understanding of human behavior. Since its launch in 2009, the Human Connectome Project has emerged as a pioneering force, making heroic strides i... 详细信息

关键词： behavior frontier dating

Emission properties of nanolasers during the transition to lasing

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Light(Science & Applications) 2014年第1期3卷 92-99页

作者： weng w Chow.frank Jahnke Christopher Gies Sandia National Laboratories AlbuquerqueNM 87185-1086USA Institute for Theoretical Physics University of Bremen28334 BremenGermany

This review addresses ongoing discussions involving nanolaser experiments,particularly those related to thresholdless lasing or few-emitter devices.A quantum-optical(quantum-mechanical active medium and radiation field)theory is used to examine the emission properties of nanolasers under different experimental *** active medium is treated as inhomogeneously broadened semiconductor quantum dots embedded in a quantum well,where carriers are introduced via current *** are made between a conventional laser and a nanolaser with a spontaneous emission factor of unity,as well as a laser with only a few quantum dots providing the *** is found that the combined exploration of intensity,coherence time,photon autocorrelation function and carrier spectral hole burning can provide a unique and consistent picture of nanolasers in the new regimes of laser operation during the transition from thermal to coherent ***,by reducing the number of quantum dots in the optical cavity,a clear indication of non-classical photon statistics is observed before the single-quantum-dot limit is reached.

关键词： nanolasers optoelectronics photon statistics quantum light sources quantum optics semiconductor quantum dots thresholdless lasing

water issues and prospects for hydrological science in China

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water Science and Engineering 2014年第1期7卷 1-4页

作者： Zhong-bo YU Tao YANG frank w.SCHwARTZ State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering Hohai University Department of Geoscience University of Nevada School of Earth Sciences Ohio State University

As a country with one of the world＇s most rapidly developing economies, China is home to wonderful opportunities for its people and the nation as a whole. An essential element for continued economic prosperity is a water supply of guaranteed quality and quantity, providing critical insurance for food safety, health, and political stability. However, China＇s economic success has come with serious water resources problems, intensified by human activities and climate change. The nation is now facing extreme levels of water pollution, soil erosion, and sedimentation, along with floods, droughts, and urban storms. Taken together, these impacts have provided a serious headwind to socioeconomic development in China. This article discusses the problems and emerging opportunities for the coming generation of water scientists and engineers.

关键词： water issues and prospects for hydrological science in China

Computer Forensics-An Essential Element of Modern IT Security

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Journal of Harbin Institute of Technology(New Series) 2014年第6期21卷 5-8页

作者： frank Y.w.Law K.P.Chow Center for Information Security and Cryptography University of Hong Kong

Computer forensics is the science of obtaining,preserving,and documenting evidence from computers,mobile devices as well as other digital electronic storage *** must be done in a manner designed to preserve the probative value of the evidence and to assure its admissibility in a legal ***,computer forensics is continually evolving as existing technologies progress and new technologies are *** example,digital investigators are required to investigate content on mobile device or data stored at the cloud *** the popularity of computers in everyday life as well as the acceleration of cybercrime rates in recent years,computer forensics is becoming an essential element of modern IT *** paper will cover the development of computer forensics in law enforcement and discuss the development in the latest live forensics skillsets.A number of interested areas of computer forensics will be also highlighted to explain how it can support IT security and civil / criminal investigation.

关键词： computer forensics cybercrime digital evidence

Radiological assessment of extranodal extension in patients with head and neck squamous cell carcinoma

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Journal of Cancer Metastasis and Treatment 2021年第1期7卷 757-764页

作者： Jan w.Dankbaar frank A.Pameijer Department of Radiology University Medical Center UtrechtUtrecht 3584CXThe Netherlands

The prognosis of patients with head and neck squamous cell cancer(HNSCC)decreases with the presence of extranodal extension(ENE)in lymph node ***,ENE was introduced in the 8th Edition TNM Classification(TNM8)for Head and Neck Cancer as a staging variable in all HPV-negative *** with ENE may benefit from adjuvant or even primary chemotherapy and/or *** is a clear discrepancy between the definition of clinical ENE and pathological *** TNM8,the radiological evaluation of ENE only plays a supportive *** not all patients with advanced disease will undergo a neck dissection,histologic proof of ENE will not always be *** these cases,it would be of great help to be able to accurately determine ENE with radiological *** this review,an update is given of the ability of radiological imaging to identify and grade ENE.

关键词： Head and neck cancer extranodal extension TNM8 radiology CT MR

Felsenstein＇s ＂one-allele model＂ of speciation： The role of philopatry in the initial stages of host plant mediated reproductive isolation in Enchenopa binotata

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Current Zoology 2013年第5期59卷 658-666页

作者： frank w. STEARNS Kelley J. TILMON Thomas K. wOOD Department of Biology Biology-Psychology Building University of Maryland College Park MD 20742 USA Department of Plant Science Plant Science Building South Dakota State University Brookings SD 57007 USA Department of Entomology and Applied Ecology 250 Townsend Hall University of Delaware Newark DE 19716 USA

The study of speciation genetics is primarily concerned with identifying the genetic traits that allow divergent selec- tion to overcome the homogenizing effects of gene flow. Felsenstein reviewed this race between gene flow and selection, con- cluding that speciation with gene flow was unlikely under a ＂two-allele model＂（where two traits were necessary for reproductive isolation） but that divergence could occur quite easily under a ＂one-allele model.＂ Despite this finding, much of the sympatric speciation research involving phytophagous insects has relied on a two-trait model, where insects evolve both preferences for and increased performance on novel host plants. Philopatry （a tendency to remain where one was born） is known to occur in phyto- phagous insects and is a single trait isolation mechanism. However, it is traditionally invoked as simply augmenting reproductive isolation. Species in the Enchenopa binotata complex are believed to have speciated in sympatry. They exhibit host plant prefe- rences, host specific performance advantages and strong philopatry. we experimentally shifted E. binotata to evolutionarily novel host plants. Previous research has demonstrated that the experimental population of insects possesses genetic variation in prefe- rence and performance to the novel host. The degree of philopatry at mating and egg-laying was assayed for the first four years under full choice conditions. Host plant preference and performance was assayed after eight years. Philopatry was an immediate and strong isolating mechanism, while preference for and performance on the novel host lagged. we therefore suggest that philo- patry may be a more important mechanism in the early stages of a host shift than previously believed [Current Zoology 59 （5）： 658-666, 2013].

关键词： Philopatry Enchenopa Ecological Speciation Sympatric Speciation