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Preparation, Microstructure and Age hardening of Rapidly Solidified Mo-alloys

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Journal of Materials Science & Technology 1989年第1期5卷 26-32页

作者：宁远涛 S.h.whang Institute of Precious Metals Kunming Yunnan China. Barnett Institute of Northeastern University Boston MA 02115 U.S.A.

Various Mo-base alloys with high melting temperature were processed into ribbons and foils by the arc melt-spinning and the arc melt hammer-anvil technique. The preparation of ribbon and foil was introduced. The mechanical proper- ties, the surface topology and the microstructure of rapidly solidified Mo-base alloys containing B were examined. A strong grain refinement and a strong age-hardening response were observed on the as-quenched and the age specimens, the precipitates which cause age hardening were identified to be Mo_2B in Mo-B alloys, Mo_2B and ZrB_2 in Mo-Zr-B alloys, and Mo_2B and ThB_4 in Mo-Th-B alloys. The results indicate that the high strength Mo-base alloys containing boride precipitates can be developed by rapid solidifica- tion technique.

关键词： Mo-alloys rapid solidification Mo_2B ZrB_2 ThB_4

ECOLOGICAL STUDIES OF GRACILARIA ASIATIC A AND GRACILARIA LEMANEIFORMIS IN ZhANShAN BAY, QINGDAO

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Journal of Oceanology and Limnology 1988年第1期6卷 22-34页

作者： susan h. Brawley,费修绠 Department of General Biology Vanderbilt University U.S.A Institute of Oceanology Academia Sinica Qingdao

Natural populations of G. asialica Zhang & Xia and G. lemaneiformis (Bory) Weber van Bosse were studied during 1984 and 1986 in Zhanshan Bay, Qingdao (36°4′N,120°21′E). Rapid growth (length, weight) of these plants occurred between mid-May and late June (water temperatures, 15-20℃). The major epiphyte of C, asialica was Enteromorpha litiza, while Punclaria latifolia was the major epiphyte of G. lemaneiformis. Epiphytism declined throughout early summer, and epiphytes were rare after mid-July (1984); they did not reappear in late summer, although macrophyte growth declined abruptly after early July. Populations of G. asiatica varied during late spring-early summer between adjacent sandy and rocky portions of the intertidal zone; plants at the sandy site were larger and epiphyte-free. Amphipod densities were low on both species of Gracilaria, but the most abundant species were Ampithoe lacertosa, Caprella equilibra, C. kroyeri, C. scaura and Pontogeneia rostrata. Additional information on general com

关键词： Bay QINGDAO ECOLOGICAL STUDIES OF GRACILARIA ASIATIC A AND GRACILARIA LEMANEIFORMIS IN ZhANShAN BAY

Template-Based Gait Authentication Through Bayesian Thresholding

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 209-219页

作者： Ebenezer R.h.P.Isaac susan Elias Srinivasan Rajagopalan K.S.Easwarakumar IEEE the Department of Computer Science and Engineering Indian Institute of Technology Madras the School of Electronics Engineering VIT University the Department of Physiology and Biomedical Engineering Mayo Clinic the Department of Computer Science and Engineering Anna University

While gait recognition is the mapping of a gait sequence to an identity known to the system, gait authentication refers to the problem of identifying whether a given gait sequence belongs to the claimed identity. A typical gait authentication system starts with a feature representation such as a gait template, then proceeds to extract its features, and a transformation is ultimately applied to obtain a discriminant feature set. Almost every authentication approach in literature favours the use of Euclidean distance as a threshold to mark the boundary between a legitimate subject and an impostor. This article proposes a method that uses the posterior probability of a Bayes' classifier in place of the Euclidean distance. The proposed framework is applied to template-based gait feature representations and is evaluated using the standard CASIA-B gait database. Our study experimentally demonstrates that the Bayesian posterior probability performs significantly better than the de facto Euclidean distance approach and the cosine distance which is established in research to be the current state of the art.

关键词： Bayes’ rule biometrics gait recognition linear discriminant analysis verification

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AC-PDP中等离子体电场的实验研究

核聚变与等离子体物理 2003年第2期23卷 108-112页

作者：周艳 Ki-Woong whang J h Yang D C Jeong C h ha 核工业西南物理研究院成都610041 国立汉城大学

用激光荧光技术直接测量了AC PDP单元高气压he和he Xe0 1%放电中的电场行为,估算了由放电电场产生的AC PDP单元上的壁电压。选用高气压下寿命较长的氦的亚稳态2s3S,比较主量子数n=8和n=9的Stark分裂谱,使电场的测量精度提高到10%。电场... 详细信息

用激光荧光技术直接测量了AC PDP单元高气压he和he Xe0 1%放电中的电场行为,估算了由放电电场产生的AC PDP单元上的壁电压。选用高气压下寿命较长的氦的亚稳态2s3S,比较主量子数n=8和n=9的Stark分裂谱,使电场的测量精度提高到10%。电场和壁电压的时间分布描述了PDP单元的放电行为。

关键词： AC-PDP 等离子体电场实验研究激光荧光技术壁电压放电等离子体显示器

Self-management of coronary heart disease in older patients after elective percutaneous transluminal coronary angioplasty

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Journal of Geriatric Cardiology 2016年第5期13卷 393-400页

作者： susan Dawkes Graeme D Smith Lawrie Elliott Robert Raeside Jayne h Donaldson School of Nursing Midwifery and Social Care Edinburgh Napier University Scotland United Kingdom Department of Nursing and Community health Glasgow Caledonian University Scotland United Kingdom Employment Research Institute Edinburgh Napier University Scotland United Kingdom School of health Sciences University of Stirling Scotland United Kingdom

Objective To explore how older patients self-manage their coronary heart disease （ChD） aider undergoing elective percutaneous transluminal coronary angioplasty （PTCA）. Methods This mixed methods study used a sequential, explanatory design and recruited a convenience sample of patients （n = 93） approximately three months after elective PTCA. The study was conducted in two phases. Quantitative data collected in Phase 1 by means of a self-administered survey were subject to univariate and bivariate analysis. Phase 1 findings in- formed the purposive samplhag for Phase 2 where ten participants were selected from the original sample for an in-depth interview. Qualita- tive data were analysed using thematic analysis. This paper will primarily report the findings from a sub-group of older participants （n = 47） classified as 65 years of age or older. Results 78.7% （n = 37） of participants indicated that they would manage recurring angina symptoms by taking glyceryl trinitrate and 34% （n = 16） thought that resting would help. Regardless of the duration or severity of the symptoms 40.5% （n = 19） would call their general practitioner or an emergency ambulance for assistance during any recurrence of angina symptoms. Older participants weighed less （P = 0.02） and smoked less （P = 0.01） than their younger counterparts in the study. Age did not seem to affect PTCA patients＇ likelihood of altering dietary factors such as fruit, vegetable and saturated fat consumption （P = 0.237）. Conclusions The findings suggest that older people in the study were less likely to know how to correctly manage any recurring angina symptoms than their younger counterparts but they had fewer risk factors for ChD. Age was not a factor that influenced participants＇ likelihood to alter lifestyle factors.

关键词： Angina pectoris Coronary disease Percutaneous transluminal coronary angioplasty Self-management

Impacts of fire and phosphorus on sawgrass and cattails in an altered landscape of the Florida Everglades

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Ecological Processes 2012年第1期1卷 50-60页

作者： Yegang Wu Ken Rutchey susan Newman Shili Miao Naiming Wang Fred h Sklar William h Orem Everglades Division South Florida Water Management District3301 Gun Club RoadWest Palm BeachFL 33406USA U.S.Geological Survey MS 95612201 Sunrise Valley DriveRestonVA 20192USA Cardno ENTRIX 339 Whitecrest DriveMaryvilleTN 37801USA.

Introduction:Although fire as a critical ecological process shapes the Florida Everglades landscape,researchers lack landscape-based approach for fire *** interactive effect of fire,nutrients,water depth,and invasive cattails(Typha spp.)on vegetation communities is of special concern for ecosystem *** particular,questions concerning the effect of fire on nutrient release and,by extension,the potential thereof to stimulate sawgrass(Cladium jamaicense Crantz)re-growth and cattail expansion under varying hydrological conditions are of immediate relevance to ecologists and land managers who work to restore the ***:In late April of 1999,a 42,875 ha surface fire,including a 100 ha peat fire,burned the northern section of Water Conservation Area 3A(WCA-3A)in the *** this study,total phosphorus(TP)in soil,surface water,pore-water,and vegetation was sampled at non-burned,surface-burned and peat-burned areas within one and five months after the *** years after the initial fire,field data were collected in a large scale survey to analyze how the 1999 fire affected cattail distribution in the altered landscape of high soil TP and cattail *** GIS maps were utilized to select field sampling locations and to provide additional information for the ***:The analyses showed that five months after the fire,sawgrass biomass re-growth was about 5 times higher in burned areas(611±47 g/m^(2))than in non-burned areas(102±18 g/m^(2)).Sawgrass re-growth in water depths less than 30 cm was 4.9±0.4 g/m^(2)/day while sawgrass re-growth in water depths deeper than 60 cm decreased to 0.5±0.3 g/m^(2)/*** biomass re-growth in peat-burned areas was as high as 1,079±38 g/m^(2).The data also showed that post-fire cattail expansion could be related to cattail stands existing before the ***,post-fire cattail appeared more significant expansion in the areas with soil TP above 900 mg/kg than in that with so

关键词： Fire Phosphorus Sawgrass Cattails Everglades Water depth Altered landscape Wetlands

The oceanic cycles of the transition metals and their isotopes

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Acta Geochimica 2017年第3期36卷 359-362页

作者： Derek Vance Corey Archer susan h.Little Michael Kobberich Gregory F.de Souza Department of Earth Sciences Institute of Geochemistry and Petrology ETH Zürich Clansiusstrasse 25 8092 Zürich Switzerland Department of Earth Science and Engineering Imperial College London South Kensington Campus Exhibition Road London SW7 2AZ UK

The stable isotope systems of the transition metals potentially provide constraints on the current and past operation of the biological pump,and on the state of ocean redox in Earth *** we focus on two exemplar metals,nickel(Ni)and zinc(Zn).The oceanic dissolved pool of both elements is isotopically heavier than the known inputs,implying an output with light isotope *** modern oceanic cycle of both these elements is dominated by biological uptake into photosynthesised organic matter and output to *** is increasingly clear,however,that such uptake is associated with only very minor isotope *** suggest that the isotopic balance is instead closed by the sequestration of light isotopes to sulphide in anoxic and organic-rich sediments,so that it is ocean chemistry that controls these isotope systems,and suggesting a different but equally interesting array of questions in Earth history that can be addressed with these systems.

关键词： Ocean biogeochemistry Metal micronutrients Stable isotopes

Precision medicine in hearing loss

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Journal of Genetics and Genomics 2018年第2期45卷 99-109页

作者： Jason R.Rudman Christine Mei Sara E.Bressler susan h.Blanton Xue-Zhong Liu Department of Otoloryngology University of Miami Miller School of Medicine Miami FL 33136 USA Dr. John T. Macdonald Foundation Department of human Cenetics University of Miami Miller School of Medicine Miami FL 33136 USA John P. hussman Institute for human Genomics University of Miami Miller School of Medicine Miami FL 33136 USA

Precision medicine（PM） proposes customized medical care based on a patient＇s unique genome, biomarkers, environment and behaviors. hearing loss（hL） is the most common sensorineural disorder worldwide and is frequently caused by a single genetic mutation. With recent advances in PM tools such as genetic sequencing and data analysis, the field of hL is ideally positioned to adopt the strategies of ***, we review current and future applications of PM in hL as they relate to the four core qualities of PM（P4）： predictive, personalized, patient-centered, and participatory. We then introduce a strategy for effective incorporation of hL PM into the design of future research studies, electronic medical records,and clinical practice to improve diagnostics, prognostics, and, ultimately, individualized patient treatment. Finally, specific anticipated ethical and economic concerns in this growing era of genomics-based hL treatment are discussed. By integrating PM principles into translational hL research and clinical practice, hearing specialists are uniquely positioned to effectively treat the heterogeneous causes and manifestations of hL on an individualized basis.

关键词： Precision medicine Personalized medicine hearing loss Genetics

Current and future opportunities for liquid biopsy of circulating biomarkers to aid in early cancer detection

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Journal of Cancer Metastasis and Treatment 2022年第1期8卷 334-344页

作者： susan h.Gawel Laurel Jackson Nicolette Jeanblanc Gerard J.Davis Abbott Diagnostics Division Abbott LaboratoriesAbbott ParkIL 60064USA

Early diagnosis of cancer can significantly improve treatment and survival *** and tissue biopsy are the gold standard diagnostic approaches but are costly,invasive,and often unable to detect early-stage *** past decade has marked an acceleration in the discovery and development of liquid biopsy tests for aiding in the detection of various types of tumor markers in non-tissue samples,such as *** biopsy markers include circulating tumor cells,as well as tumor cell fragments,nucleic acids,and *** biopsy may be useful in screening patients considered to be at high risk of developing cancer,for refining diagnosis when combined with other test results,and for early detection of *** in big data analytics,informatics,and artificial intelligence will make it possible to combine patient history,clinical data,and liquid biopsy marker profiles to achieve more accurate and earlier *** this review,we summarize the current use of liquid biopsy in cancer care,including the development of multi-analyte panels to improve diagnostic accuracy and detect several cancer types in a single *** highlight recent advances for potential future applications of liquid biopsy to aid in the diagnosis of early-stage lung *** also discuss the opportunities and challenges of integrating liquid biopsy into current algorithms for cancer screening and diagnosis.

关键词： Cancer early detection diagnostic algorithm biomarkers blood serum analyte