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智能电子保险丝

今日电子 2000年第5期 18-19,28页

作者： Gene Carey michael hess 吴忠 MAXIM公司

对于大多数采用电感的非同步整流升压型开关变换器,其输入和输出之间都存在一条直流通路,如图1所示。该通路的存在会造成两种不良后果:其一,一旦输出短路或严重过载时间超出几百毫秒将导致二极管(通常为肖特基二极管)过热损坏;其二,当... 详细信息

对于大多数采用电感的非同步整流升压型开关变换器,其输入和输出之间都存在一条直流通路,如图1所示。该通路的存在会造成两种不良后果:其一,一旦输出短路或严重过载时间超出几百毫秒将导致二极管(通常为肖特基二极管)过热损坏;其二,当由于某种原因。

关键词：智能电子保险丝开关变换器电感

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对火鸡进行组织滴虫病的预防接种

中国家禽 2007年第20期 60-60页

作者： michael hess Liebhart Dieter Grabensteiner Elvira 刘爵施蕾

组织滴虫病或黑头病是由火鸡组织滴虫病引起的一种禽类的疾病,由于禁止采用预防给药和治疗措施,常常反复发作。多种方法研究表明,寄生虫不仅侵入肝脏和盲肠,还侵入其它的组织。接种疫苗是预防疾病策略的首选。目前仅有一些资料对给火鸡... 详细信息

组织滴虫病或黑头病是由火鸡组织滴虫病引起的一种禽类的疾病,由于禁止采用预防给药和治疗措施,常常反复发作。多种方法研究表明,寄生虫不仅侵入肝脏和盲肠,还侵入其它的组织。接种疫苗是预防疾病策略的首选。目前仅有一些资料对给火鸡接种疫苗抵抗组织滴虫病存在争议。在本研究中,火鸡组织滴虫的克

关键词：组织滴虫病传染性盲肠肝炎滴虫感染火鸡活疫苗

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你没必要取悦所有人

创业邦 2014年第11期 98-98页

作者： michael hess Nana

前段时间,我约见一位员工做中期业绩评估。我挺兴奋,因为我准备给她个大惊喜——大幅加薪以回馈她担负额外责任的辛劳。对企业主而言,给员工加薪是（至少应该是）最愉快的事之一,我整个星期都在期待这一刻的到来。评估结束后我告诉了她... 详细信息

前段时间,我约见一位员工做中期业绩评估。我挺兴奋,因为我准备给她个大惊喜——大幅加薪以回馈她担负额外责任的辛劳。对企业主而言,给员工加薪是（至少应该是）最愉快的事之一,我整个星期都在期待这一刻的到来。评估结束后我告诉了她新的薪资水平,她却面无表情地回复道：＂我以为早该加薪了。＂

关键词：薪资水平复道业绩评估最佳决策对我说现金流警兆现金损失细微差别我自己

Transfer of Fibres onto Knife Blades in Stabbing Events: Distribution and Determination of the Stabbing Sequence

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Journal of Forensic Science and Medicine 2015年第2期1卷 84-92页

作者： michael Schnegg Line Gueissaz Jessica Rodriguez Sabine hess Genevieve Massonnet School of Criminal Justice Faculty of LawCriminal Justice and Public AdministrationUniversity of LausanneLausanne Forensic Science Institute Zurich ZurichSwitzerland

Knives are among the weapons most frequently involved in criminal *** represent the most encountered category of weapons in Swiss homicide cases(completed and attempted homicides considered)and are also frequently employed in assault cases,notably bodily *** a knife is involved in a stabbing event,DNA and fingerprints may be *** garments are damaged,fibres can also be *** from the victim's garments might transfer onto the blade of the knife used in the assault and can thus provide useful infbnnation to determine whether a particular weapon could have be used to stab the *** study simulates vertical stabbings into garments with the use of a special holding *** types ofknives and blades straight or serrated were used as *** garments presenting different shedding capacities and garment structures were also considered for the *** distribution of fibres transferred onto the blade(number and position)was recorded for each simulation *** of stabbings into the two garments were also carried out to assess whether the order of the stabs could be *** parameters were considered,notably the distribution of fibres transferred onto the *** transfer of fibres inside the stab damage ballistic soap was used in this study and on the area near the second damage was also *** study provides new insight into the interpretation of fibres transferred onto knives after a single stab or a sequence of stabbings and into determining the stabbing ***,the study brings some guidelines for the search and recovery of fibres on the crime scene and on the blades ofknives.

关键词： Damage to textiles fibre localization secondary transfer stabbing simulations transfer sequence

Is it necessary to fuse to the pelvis when correcting scoliosis in cerebral palsy?

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World Journal of Orthopedics 2022年第4期13卷 365-372页

作者： Shane F Strom Matthew C hess Achraf H Jardaly michael J Conklin Shawn R Gilbert Department of Orthopaedics University of Alabama at BirminghamBirminghamAl 35294United States Department of Orthopaedics The Hughston Clinic/Hughston FoundationColumbusGA 31908United States

BACKGROUND Neuromuscular scoliosis is commonly associated with a large pelvic *** in children with cerebral palsy is most commonly managed with posterior spinal instrumentation and *** consensus is reached regarding the proximal starting point of fusion,controversy exists as to whether the distal level of spinal fusion should include the pelvis to correct the pelvic *** To assess the role of pelvic fusion in posterior spinal instrumentation and fusion,particularly it impact on pelvic obliquity correction,and to assess if the rate of complications differed as a function of pelvic *** This was a retrospective,cohort study in which we reviewed the medical records of children with cerebral palsy scoliosis treated with posterior instrumentation and fusion at a single *** follow-up was six *** were stratified into two groups:Those who were fused to the pelvis and those fused to L4/*** major outcomes were complications and radiographic *** former were stratified into major and minor complications,and the latter consisted of preoperative and final Cobb angles,L5-S1 tilt and pelvic *** The study included 47 *** correction of the L5 tilt was 60%in patients fused to the pelvis and 67%in patients fused to L4/L5(P=0.22).The pelvic obliquity was corrected by 43%and 36%in each group,respectively(P=0.12).Regarding complications,patients fused to the pelvis had more total complications as compared to the other group(63.0%vs 30%,respectively,P=0.025).After adjusting for differences in radiographic parameters(lumbar curve,L5 tilt,and pelvic obliquity),these patients had a 79%increased chance of developing complications(Relative risk=1.79;95%CI:1.011-3.41).CONCLUSION Including the pelvis in the distal level of fusion for cerebral palsy scoliosis places patients at an increased risk of postoperative *** added value that pelvic fusion offers in terms of correcting

关键词： Cerebral palsy Scoliosis Pelvic fusion Pelvic obliquity Spinal fusion Distal lumbar level

Effect of Growth Morphology on the Electronic Structure of Epitaxial Graphene on SiC

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Graphene 2013年第1期2卷 55-59页

作者： michael D. Williams Dennis W. hess Center of Excellence in Microelectronics and Photonics Department of Physics Clark Atlanta University Atlanta USA School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta USA

Ultraviolet photoemission spectroscopy is used to investigate the electronic structure of epitaxial graphene grown by the thermal decomposition of the carbon face of 4H SiC. We find that the growth of the film on the chemical mechanically polished and hydrogen etched surface enhances spectral features in the valence band structure compared to the film grown on an unpolished hydrogen etched substrate. This result is indicative of a more highly ordered surface structure compared to the morphologically rough material and shows that substrate preparation plays an important role in the quality of the film. The work function of the smooth surface film is found to be 0.4 eV higher than that for graphite and 0.1 eV less than for the rough surface growth.

关键词： Graphene SiC UPS Work Function Electronic Structure

Mantle plumes,triple junctions and transforms:A reinterpretation of Pacific Cretaceous-Tertiary LIPs and the Laramide connection

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Geoscience Frontiers 2020年第4期11卷 1133-1144页

作者： michael Fletcher Derek A.Wyman Sabin Zahirovic EarthByte Group School of GeosciencesUniversity of SydneySydneyNew South Wales2006Australia

The Shatsky and hess Rises,the Mid-Pacific Mountains and the Line Islands large igneous provinces(LIPs) present different challenges to conventional plume *** the genesis of these LIPs is important not only for a more complete understanding of mantle plumes and plume-generated magmatism,but also for establishing the role of subducted LIP conjugates in the evolution of the Laramide orogeny and other circum-Pacific orogenic events,which are related to the development of large porphyry *** past difficulties in developing consistent geodynamic models for these LIPs,it is useful to consider whether viable alternative geodynamic scenarios may be provided by recent concepts such as melt channel networks and channel-associated lineaments,along with the "two mode"model of melt generation,where a deeply-sourced channel network is superimposed on the plume,evolving and adapting over millions of years.A plume may also interact with transform faults in close proximity to a mid ocean ridge,with the resultant bathymetric character strongly affected by the relative age difference of lithosphere across the *** results suggest that the new two-mode melt models resolve key persistent issues associated with the Shatsky Rise and other LIPs and provide evidence for the existence of a conduit system within plumes that feed deeply-sourced material to the plume head,with flow maintained over considerable *** conduit system eventually breaks down during plume-ridge separation and may do so prior to the plume head being freed from the triple junction or spreading *** is evidence for not only plume head capture by a triple junction but also for substantial deformation of the plume stem as the distance between the stem and anchored plume head *** evidence suggests that young transforms can serve as pathways for plume material migration,at least in certain plume head-transform configurations.A fortuitous similarity between the path of the

关键词： Mantle plume Shatsky rise hess rise Mid-pacific mountains Laramide orogeny

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Distinctive distribution of lymphocytes in unruptured and previously untreated brain arteriovenous malformation

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Neuroimmunology and Neuroinflammation 2014年第1期1卷 147-152页

作者： Yi Guo Tarik Tihan Helen Kim Christopher hess michael T.Lawton William L.Young Yuan-Li Zhao Hua Su Department of Anaesthesia and Perioperative Care Center for Cerebrovascular ResearchSan FranciscoCA 94110USA Department of Pathology University of CaliforniaSan FranciscoSan FranciscoCA 94110USA Department of Radiology and Biomedical Imaging University of CaliforniaSan FranciscoSan FranciscoCA 94110USA Department of Neurological Surgery University of CaliforniaSan FranciscoSan FranciscoCA 94110USA Department of Neurology University of CaliforniaSan FranciscoSan FranciscoCA 94110USA Department of Neurosurgery Affiliated Hospital of Hebei UniversityBaoding 071000HebeiChina Department of Neurosurgery Beijing Tiantan HospitalCapital Medical UniversityBeijing 410011China

Aim:To test the hypothesis that lymphocyte infiltration in brain arteriovenous malformation(bAVM)is not associated with iron deposition(indicator of micro-hemorrhage).Methods:Sections of unruptured,previously untreated bAVM specimens(n=19)were stained immunohistochemically for T-lymphocytes(CD3+),B-lymphocytes(CD20+),plasma cells(CD138+)and macrophages(CD68+).Iron deposition was assessed by hematoxylin and eosin and Prussian blue *** temporal arteries(STA)were used as ***:Both T-lymphocytes and macrophages were present in unruptured,previously untreated bAVM specimens,whereas few B cells and plasma cells were *** deposition was detected in 8 specimens(42%;95%confidence intervals=20-67%).The samples with iron deposition tended to have more macrophages than those without(666±313 vs.478±174 cells/mm2;P=0.11).T-cells were clustered on the luminal side of the endothelial surface,on the vessel-wall,and in the perivascular *** was no correlation between T-lymphocyte load and iron deposition(P=0.88).No macrophages and lymphocytes were detected in STA ***:T-lymphocytes were present in bAVM *** macrophages,the load and location of T-lymphocytes were not associated with iron deposition,suggesting the possibility of an independent cell-mediated immunological mechanism in bAVM pathogenesis.

关键词： B-lymphocyte human brain arteriovenous malformation inflammatory cells micro-hemorrhage T-lymphocyte

In vivo cardiac pacemaker function of differentiated human mesenchymal stem cells from adipose tissue transplanted into porcine hearts

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World Journal of Stem Cells 2020年第10期12卷 1133-1151页

作者： Fabrice F Darche Rasmus Rivinius Ann-Kathrin Rahm Eva Köllensperger Uwe Leimer Günter Germann Miriam Reiss michael Koenen Hugo A Katus Dierk Thomas Patrick A Schweizer Department of Cardiology Medical University Hospital HeidelbergHeidelberg D-69120Germany DZHK(German Centre for Cardiovascular Research) Partner Site Heidelberg/MannheimUniversity of HeidelbergHeidelberg D-69120Germany HCR(Heidelberg Center for Heart Rhythm Disorders) Department of CardiologyMedical University Hospital HeidelbergHeidelberg D-69120Germany Department of Plastic Surgery ETHIANUM Klinik HeidelbergHeidelberg D-69115Germany Department of Molecular Neurobiology Max-Planck-Institute for Medical ResearchHeidelberg D-69120Germany

BACKGROUND Mesenchymal stem cells(MSC)modified by gene transfer to express cardiac pacemaker channels such as HCN2 or HCN4 were shown to elicit pacemaker function after intracardiac transplantation in experimental animal *** MSC derived from adipose tissue(haMSC)differentiate into cells with pacemaker properties in vitro,but little is known about their behavior after intracardiac *** To investigate whether haMSC elicit biological pacemaker function in vivo after transplantation into pig *** haMSC under native conditions(nhaMSC)or after pre-conditioning by medium differentiation(dhaMSC)(n=6 pigs each,5×106 cells/animal)were injected into the porcine left ventricular free *** receiving PBS injection served as controls(n=6).Four weeks later,total atrioventricular(AV)-block was induced by radiofrequency catheter ablation,and electronic pacemaker devices were implanted for backup stimulation and heart rate *** rate and rhythm of pigs were evaluated during a follow-up of 15 d post ablation by 12-lead-ECG with heart rate assessment,24-h continuous rate monitoring recorded by electronic pacemaker,assessment of escape recovery time,and pharmacological challenge to address catecholaminergic rate ***,hearts were analyzed by histological and immunohistochemical *** In vivo transplantation of dhaMSC into the left ventricular free wall of pigs elicited spontaneous and regular rhythms that were pace-mapped to ventricular injection sites(mean heart rate 72.2±3.6 bpm;n=6)after experimental total AV *** rhythms were stably detected over a 15-d period and were sensitive to catecholaminergic stimulation(mean maximum heart rate 131.0±6.2 bpm;n=6;P<0.001).Pigs,which received nhaMSC or PBS presented significantly lower ventricular rates(mean heart rates 47.2±2.5 bpm and 37.4±3.2 bpm,respectively;n=6 each;P<0.001)and exhibited little sensitivity towards catecholaminergic stimulatio

关键词： Biological cardiac pacemaker Mesenchymal stem cells Differentiation Animal model Cell transplantation Stem cell therapy