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At the Desert＇s Edge

中国翻译 2010年第5期31卷 85-86页

作者： christopher Hitchens

Experimental Study of High Moisture Content Gas Flow Across a Cylinder at Moderate Reynolds Numbers

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Tsinghua Science and Technology 2003年第5期8卷 598-604页

作者： D.M.christopher 郭亮 Department of Thermal Engineering

The Nusselt number for cross flow of a mixture of air and vapor over a cylinder was measured at moderate Reynolds numbers (30007000) for temperatures from 300℃ to 700℃ and for vapor mass fractions of 0.180.35. Results are also presented for a set of three cylinders aligned perpendicular to the flow for the same range of conditions. The effect of the vapor concentration and temperature on the convection coefficients was investigated to develop a modified Zhukauskas correlation. The results show that the Nusselt number increases as the moisture content increases and that the increase is more than could be accounted for by typical models for the property variations of mixtures. The exponent of the vapor concentration term in the modified correlation is 0.145 for the entire data set indicating the importance of the property variation due to the moisture content.

关键词： high moisture content cross flow convection coefficients heat exchangers

Emergency Medicine and COVID-19:now and next year

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Emergency and Critical Care Medicine 2021年第1期1卷 14-19页

作者： Theodore A.christopher Adrienne N.christopher Department of Emergency Medicine Thomas Jefferson University HospitalPhiladelphiaPennsylvania Department of Surgery Thomas Jefferson University HospitalPhiladelphiaPennsylvania

The COVID-19 pandemic is responsible for infecting to date more than 93 million people worldwide and causing more than 2 million *** the vast majority of deaths have occurred in the United States(U.S.)can be attributed to nonadherence by Americans to basic public health mitigation strategies that are known to curtail coronavirus *** Departments(ED’s)throughout the *** a dramatic decrease in patient visits during the first surge of COVID-19,followed by an ED patient visit rebound to approximately 80%of pre-COVID-19 numbers,which have remained relatively stable through the current second COVID-19 *** pandemic highlighted the significant role that hospital ED’s and emergency physicians played in combatting COVID-19“on the front lines.”Wearing extensive and escalating personal protective equipment(PPE)layers became the norm in seeing emergency patients,and many infrastructure and process changes occurred included evaluating and treating patients in outdoor tents,cohorting confirmed and suspected COVID-19 patients in designated ED and hospital sections,and repeatedly amending COVID-19 evaluation and treatment guidelines as more information became available on a sometimes daily *** other clinical venues in which emergency physicians were working during COVID-19 surges,Observation Unit patient visits decreased,although patient acuity increased;urgent care(UC)patient visits decreased dramatically,whereas Telehealth(TH)patient visits to our 24/7 available platform,JeffCONNECT,saw a dramatic increase in ***,Dexamethazone and more recently,the monoclonal antibody Bamlanivimab,have formed the mainstay of treatment offered to our patients with COVID-19;all these agents are offered to patients in our ED’s and Observation *** current second COVID-19 surge,with our ED and hospital patient visits remaining essentially stable,has intensified the public health crisis as record numbers of *** continue to a

关键词： Coronavirus COVID-19 Emergency Medicine

Chronic disease in a digital health environment

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Family Medicine and Community Health 2018年第1期6卷 20-25页

作者： christopher Pearce Australasian College of Health Informatics Outcome Health Department of Health Informatics University of Melbourne Department of General Practice Monash University Digital Health Committee of the Australian College of Rural and Remote Medicine

Although we know that there are benefits to individual patients from electronic data,the next potential,and potentially the biggest,benefit will come from the technologies known as big data,machine learning,and artificial *** the potential of computers to sift through large amounts of data will result in the possibility of generating insights into individual patients,and into whole populations,predicting the risk of hospital admission for an individual,or track-ing influenza epidemics to prepare adequate *** the data are reliable,recorded in a computer-interpretable way,new horizons will open.

关键词： Ehealth digital health chronic disease patient centred medicine health systems

The Subversion of Modernity and Socialism in Mu Shiying＇s Early Fiction

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Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2013年第1期7卷 1-22页

作者： christopher Rosenmeier School of Literatures Languages and Cultures The University of Edinburgh Edinburgh EH8 9LW UK

Mu Shiying＇s first short story collection, North Pole, South Pole （Nanbeiji） from 1932, is usually seen as socialist or proletarian literature preceding his later modernist writings. I argue that this view needs to be revised. In one short story Mu deliberately parodies the social agenda of contemporary leftist writers. The protagonists are neither enlightened workers nor victims of social injustice. On the contrary, they turn to rage, misogyny, and self-righteous violence, and their motives are rooted in their sexual frustrations and inability to cope with modem life. Their righteous ideals are based on fiction and an imagined tradition. Mu＇s construction of the fictive tradition plays an important part in these early short stories, and, in this respect, I compare them with Shi Zhecun＇s writings.

关键词： Mu Shiying North Pole South Pole (Nanbeiji) Xin ganjue pal (New Sensationalism) proletarian literature

Induction of ultra-morphological features of apoptosis in mature and immature sperm

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Asian Journal of Andrology 2017年第5期19卷 533-537页

作者： Sonja Grunewald Guenther Fitzl christopher Springsguth Department of Dermatology Venerology and Allergology University Hospital Leipzig Leipzig Germany Institute of Anatomy University of Leipzig Leipzig Germany

There is a fundamental body of evidence suggesting that activated apoptosis signaling in ejaculated human sperm negatively influences their fertilization potential. However, it is still controversial whether this apoptotic signaling is a relic of an abortive apoptosis related to spermatogenesis or if it should be regarded as a functional preformed pathway in mature sperm leading to stereotypical morphological changes reflecting nuclear disassembly. To address this question, apoptosis was induced using betulinic acid in mature and immature ejaculated human sperm enriched by density gradient centrifugation. Execution of apoptosis was monitored by observing ultra-morphological changes via transmission electron microscopy. Typical morphological signs of apoptosis in somatic cells include plasma membrane blebbing with the formation of apoptotic bodies, impaired mitochondrial integrity, defects of the nuclear envelope, and nuclear fragmentation; these morphologies have also been observed in human sperm. In addition, these apoptotic characteristics were more frequent in immature sperm compared to mature sperm. Following betulinic acid treatment, apoptosis-related morphological changes were induced in mature sperm from healthy donors. This effect was much less pronounced in immature sperm. Moreover, in both fractions, the betulinic acid treatment increased the percentage of acrosome-reacted sperm. The results of our ultra-morphological study prove the functional competence of apoptosis in mature ejaculated human sperm. The theory of a sole abortive process may be valid only for immature sperm. The induction of the acrosome reaction by stimulating apoptosis might shed light on the biological relevance of sperm apoptosis.

关键词： apoptosis electron microscopy human morphology sperm

Potential Use of Strain Hardening ECC in Permanent Formwork with Small Scale Flexural Beams

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Journal of Wuhan University of Technology(Materials Science) 2009年第3期24卷 482-487页

作者：李贺东 christopher K Y Leung Department of Civil Engineering Hong Kong University of Science and Technology

Utilizing pre-cast ECC panels as participating permanent formwork of concrete members, and the validity of using ECC to disperse the single crack in concrete into multiple ones in ECC were studied. In the process, totally two kinds of ECC with different tensile properties, 7 series of flat panels with different top surface figures and 3 U-shape panels with different inner surface forms were investigated. To evaluate the performance of the permanent formworks, small ECC-concrete composite beams were cast and tested mechanically. The 4-point bending test results show that the use of pre-cast ECC panels as permanent formwork can significantly improve the load capacity and toughness of a concrete member, effectively dispersing single widely opened crack in concrete into multiple ones in ECC. Most permanent formworks show perfect bond with the concrete cast on them, while the ones with partially debonded zone achieve the best mechanical performance. The U-shape permanent formworks show better performances than the flat ones, achieving much betler improvements in both the load capacity and toughness, together with better crack width control.

关键词： pseudo strain hardening cementitious composites permanent formwork toughness crack

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

Novel theoretical constraints for color-octet scalar models

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Chinese Physics C 2019年第9期43卷 1-11页

作者： Li Cheng Otto Eberhardt christopher W.Murphy Institute of Applied Physics and Computational Mathematics Beijing 100094China Instituto de Fisica Corpuscular Universitat de Valencia-CSICApt.Correus 22085E-46071 ValenciaSpain Department of Physics Brookhaven National LaboratoryUptonNew York11973USA

We study the theoretical constraints on a model whose scalar sector contains one color octet and one or two color singlet SU(2)L *** ensure unitarity of the theory,we constrain the parameters of the scalar potential for the first time at the next-to-leading order in perturbation ***,we derive new conditions guaranteeing the stability of the *** employ the HEPfit package to extract viable parameter regions at the electroweak scale and test the stability of the renormalization group evolution up to the multi-TeV ***,we set upper limits on the scalar mass *** results are given for both cases with and without a second scalar color singlet.

关键词： beyond the Standard Model extension of Higgs sector EW symmetry breaking