检索结果-南通市图书馆

Observations of the step-like accelerating processes of cold ions in the reconnection layer at the dayside magnetopause

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2018年第1期63卷 31-37页

作者： Qinghe Zhang Michael Lockwood john C.Foster Qiugang Zong malcolm W.Dunlop Shunrong Zhang joran Moen Beichen Zhang Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China Department of Meteorology University of ReadingReading RG6 6BBUK MIT Haystack Observatory WestfordMA 01886USA School of Earth and Space Sciences Peking UniversityBeijing 100087China Space Sciences Division SSTDRutherford Appleton LaboratoryDidcot OX11 OQXUK Department of Physics University of OsloBlindern 0316OsloNorway SOA Key Laboratory for Polar Science Polar Research Institute of ChinaShanghai 200136China

Cold ions of plasmaspheric origin have been observed to abundantly appear in the magnetospheric side of the Earth's magnetopause. These cold ions could affect the magnetic reconnection processes at the magnetopause by changing the Alfvén velocity and the reconnection rate, while they could also be heated in the reconnection layer during the ongoing reconnections. We report in situ observations from a partially crossing of a reconnection layer near the subsolar magnetopause. During this crossing, step-like accelerating processes of the cold ions were clearly observed, suggesting that the inflow cold ions may be separately accelerated by the rotation discontinuity and slow shock inside the reconnection layer.

关键词： Cold ions Magnetic reconnection Ion accelerations Magnetopause

A randomized controlled trial of Promoting Physical Activity in Regional and Remote Cancer Survivors(PPARCS)

在线全文

学校读者我要写书评

暂无评论

journal of Sport and Health Science 2024年第1期13卷 81-89页

作者： Sarah j.Hardcastle Chloe Maxwell-Smith Vinicius Cavalheri Terry boyle Marta Leyton Román Cameron Platell Michael Levitt Christobel Saunders Frank Sardelic Sophie Nightingale jacob McCormick Craig Lynch Paul A.Cohen Max Bulsara Dana Hince Sport and Physical Activity Research Centre Sheffield Hallam UniversitySheffieldS102BPUK Institute for Health Research The University of Notre DameFremantleWA 6959Australia Curtin School of Population Health Curtin UniversityPerthWA 6845Australia Curtin School of Allied Health Curtin UniversityPerthWA 6845Australia Allied Health South Metropolitan Health ServiceMurdochWA 6150Australia Australian Centre for Precision Health University of South AustraliaAdelaideSA 5001Australia Department of Didactics of Musical Plastic and Body ExpressionUniversity of ExtremaduraCaceres 10071Spain St.john of God Subiaco Hospital PerthWA 6008Australia Department of Surgery University of MelbourneMelbourneVIC 3010Australia Tamara Private Hospital TamworthNSW 2340Australia Peter MacCallum Cancer Centre MelbourneVIC 3000Australia College of Health and Medicine Australian National UniversityCanberraACT 2600Australia Division of Obstetrics and Gynaecology Medical SchoolUniversity of Western AustraliaPerthWA 6009Australia

Background:Physical activity(PA)is important for cancer *** of remotely delivered interventions are needed to assist in reaching under-served non-metropolitan cancer *** objective of this study was to ascertain whether wearable technology,coupled with health coaching was effective in increasing PA in breast and colorectal cancer survivors living in regional and remote areas in ***:Cancer survivors from 5 states were randomized to intervention and control *** participants were given a Fitbit Charge 2TMand received up to 6 telephone health coaching *** participants received PA print *** assessments at baseline and 12 weeks measured moderate-to-vigorous PA(MVPA),light PA,and sedentary ***:Eighty-seven participants were recruited(age=63±11 years;74(85%)female).There was a significant net improvement in MVPA of 49.8 min/week,favoring the intervention group(95%confidence interval(95%CI):13.6-86.1,p=0.007).There was also a net increase in MVPA bouts of 39.5 min/week(95%CI:11.9-67.1,p=0.005),favoring the intervention *** groups improved light PA and sedentary behavior,but there were no between-group ***:This’s the first study to demonstrate that,when compared to standard practice(i.e.,PA education),a wearable technology intervention coupled with distance-based health coaching,improves MVPA in non-metropolitan cancer *** results display promise for the use of scalable interventions using smart wearable technology in conjunction with phone-based health coaching to foster increased PA in geographically disadvantaged cancer survivors.

关键词： Behavior change Exercise Health disparities Oncology Wearable technology

Physical activity, weight status and diet in adolescents: are children meeting the guidelines

在线全文

学校读者我要写书评

暂无评论

Health 2010年第10期2卷 1142-1149页

作者： Spencer E. boyle Georgina L. jones Stephen j. Walters 不详

Childhood obesity is on the increase and maintaining regular physical activity and consuming a healthy diet have become essential tools to combat the condition. The United Kingdom government has recommended guidelines for optimal levels of diet and activity in children. The aim of this paper is to describe and compare self-reported physical activity levels, diet, and Body Mass Indices (BMI) amongst adolescent children, aged 11-15, in the South West (SW) and North West (NW) regions of England and to see if these children were meeting the current targets for optimal levels of: physical activity;fruit/vegetable consumption;fat consumption and BMI. We report the results of a cross-sectional survey of four secondary schools and 1,869 children using the self-reported Western Australian Child and Adolescent Physical Activity and Nutrition Survey (CAPANS) physical activity instrument and a food intake screener questionnaire, in summer and winter. We found that 25% (469/1869) 95% CI: 23% to 27%, of children engaged in 60 minutes of moderate to vigorous physical activity per day;53% (995/1866) 95% CI: 51% to 56%, took 5 portions of fruit and vegetables per day;while 22% (407/1861) 95% CI: 20% to 24% consumed recommended amount of fats, and 23.7% (276/1164) 95% CI: 21% to 26%, of pupils were obese or overweight as classified by their BMI. Self reported physical activity in young people regardless of area is lower than previously reported and the lack of students engaging in 60 minutes moderate to vigorous activity could have serious public health consequences. If sustained, this could lead to more overweight adults, and more ill health.

关键词： Physical Activity Diet Exercise Adolescents Guidelines

The history and development of the IEA GHG Weyburn-Midale CO_(2) Monitoring and Storage Project in Saskatchewan, Canada (the world largest CO_(2) for EOR and CCS program)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum 2017年第1期3卷 3-9页

作者： Ken Brown Steve Whittaker malcolm Wilson Wayuta Srisang Heidi Smithson Paitoon Tontiwachwuthikul Clean Energy Technologies Research Institute(CETRI) University of Regina3737 Wascana ParkwayReginaSK S4S 0A2Canada

*** The Weyburn oil field occurs within a larger trend of similar oil accumulations in Mississippian-aged *** history of discovery of these oil accumulations resulted in the fields being given several different *** Weyburn field and the immediately-adjacent Midale field are effectively part of a larger oil pool with OOIP(original oil in place)reserves of over 2 billion *** is certainly a large conventional oil pool for Canada even if not large by world *** pools are found in truncated stratigraphic traps and occur at about 1450e1550 m depth making them ideal for CO_(2) storage[1].

关键词： Canada Storage CCS

Long-term outcomes after fractional flow reserve-guided percutaneous coronary intervention in patients with severe coronary stenosis

在线全文

学校读者我要写书评

暂无评论

journal of Geriatric Cardiology 2019年第4期16卷 329-337页

作者： Ying-Hua ZHANG jing LI Andreas j. Flammer Yoshiki Matsuo Moo-Sik Lee Ryan j. Lennon malcolm R. Bell David R. Holmes john F. Bresnahan Charanjit S. Rihal Lilach O. Lerman Amir Lerman Division of Cardiology Xuanwu Hospital Capital Medical UniversityBeijingChina Division of Cardiovascular Diseases Mayo ClinicRochesterUSA Cardiovascular Center CardiologyUniversity Hospital ZurichSwitzerland Department of Preventive Medicine College of Medicine Konyang UniversityDaejeonSouth Korea Biomedical Statistics Mayo ClinicRochesterUSA Division of Nephrology and Hypertension Mayo ClinicRochesterUSA

Objective To explore the safety and efficacy of FFR-guided percutaneous coronary intervention (PCI) in vessels with severe diameter stenosis. Methods & Results Of 1090 patients undergoing fractional flow reserve (FFR) assessment from 2002 to 2009,we identified 167 patients in whom FFR was measured in at least one 70%–89% stenotic lesion. These patients were subdivided into an FFR-defer group (n = 49) if PCI was deferred (FFR > 0.80),and an FFR-perform group (n = 118) if PCI was performed (FFR ≤ 0.80). Comparatively,an additional 1176 patients undergoing PCI in at least one lesion with 70%–89% stenosis but without measurement of FFR served as a control (angiography- guided) group. Clinical outcomes were compared during a median follow-up of 49.0 months. The 5-year Kaplan-Meier estimated revascularization rates were 16% in the FFR-defer group and 33% in the FFR-perform group (P = 0.046). The incidence of major adverse cardiac events were comparable in these two groups (HR = 0.82,95% CI: 0.37–1.82,P = 0.63). The number of stents placed was significantly lower in the FFR-guided group (0.9 ± 0.8 vs. 1.4 ± 0.8,P < 0.001). Conclusions Functional revascularization for lesions with visually severe stenosis is clinically safe and associated with fewer stents use. This study suggests that extending the use of FFR to more severe coronary lesions may be reasonable.

关键词： Fractional flow reserve Outcome Percutaneous coronary intervention Severe stenosis Stent

Hydrophobic aerogel-modified hemostatic gauze with thermal management performance

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2023年第8期26卷 142-158页

作者： Xiaoli jia Chao Hua Fengbo Yang Xiaoxiao Li Peng Zhao Feifan Zhou Yichi Lu Hao Liang malcolm Xing Guozhong Lyu Engineering Research Center of the Ministry of Education for Wound Repair Technology Jiangnan UniversityAffiliated Hospital of Jiangnan UniversityWuxi214000China Wuxi School of Medicine Jiangnan UniversityWuxi214000China Medical School of Nantong University Nantong226019China Nanjing University of Traditional Chinese Medicine Nanjing210023China Changhai Clinical Research Unit Shanghai Changhai HospitalNaval Medical UniversityShanghai200433China Department of Mechanical Engineering University of ManitobaWinnipegR3T 2N2Canada

Current hemostatic agents or dressings are not efficient under extremely hot and cold environments due to deterioration of active ingredients,water evaporation and ice crystal *** address these challenges,we engineered a biocompatible hemostatic system with thermoregulatory properties for harsh conditions by combining the asymmetric wetting nano-silica aerogel coated-gauze(AWNSA@G)with a layer-by-layer(LBL)*** AWNSA@G was a dressing with a tunable wettability prepared by spraying the hydrophobic nano-silica aerogel onto the gauze from different *** hemostatic time and blood loss of the AWNSA@G were 5.1 and 6.9 times lower than normal gauze in rat’s injured femoral artery ***,the modified gauze was torn off after hemostasis without rebleeding,approximately 23.8 times of peak peeling force lower than normal *** the LBL structure,consisting of the nano-silica aerogel layer and a n-octadecane phase change material layer,in both hot(70℃)and cold(-27℃)environments,exhibited dual-functional thermal management and maintained a stable internal *** further verified our composite presented superior blood coagulation effect in extreme environments due to the LBL structure,the pro-coagulant properties of nano-silica aerogel and unidirectional fluid pumping of AWNSA@*** work,therefore,shows great hemostasis potential under normal and extreme temperature environments.

关键词： Hydrophobic hemostasis Thermal management Hydrophobic methyl modified nano-silica aerogel Harsh environments Unidirectional fluid pumping

Highly efficient semiconductor modules making controllable parallel microchannels for non-compressible hemorrhages

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bioactive Materials 2024年第6期36卷 30-47页

作者： Fengbo Yang Xiaoli jia Chao Hua Feifan Zhou jianing Hua Yuting ji Peng Zhao Quan Yuan malcolm Xing Guozhong Lyu Engineering Research Center of the Ministry of Education for Wound Repair Technology Jiangnan UniversityAffiliated Hospital of Jiangnan UniversityWuxi214000China Wuxi School of Medicine Jiangnan UniversityWuxi214000China Medical School of Nantong University Nantong226019China Department of Critical Care Medicine Affiliated Hospital of Jiangnan UniversityWuxi 214000China Burn&Trauma Treatment Center Affiliated Hospital of Jiangnan UniversityWuxi 214000China State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu610041SichuanChina Department of Mechanical Engineering University of ManitobaWinnipegR3T 2N2Canada

Nature makes the most beautiful solution to involuted *** them,the parallel tubular structures are capable of transporting fluid quickly in plant trunks and leaf stems,which demonstrate an ingenious evolutionary *** study develops a mini-thermoelectric semiconductor P-N module to create gradient and parallel channeled *** modules decrease quickly the temperature of polymer solution from 20◦C to􀀀20◦C within 5 *** addition to the exceptional liquid absorption rate,the foams exhibited shape memory *** mini device universally makes the inspired structure in such as chitosan,gelatin,alginate and polyvinyl ***-compressible hemorrhages are the primary cause of death in *** rapid liquid absorption leads to fast activation of coagulation,which provides an efficient strategy for hemostasis *** demonstrated this by using our semiconductor modules on collagen-kaolin parallel channel foams with their high porosity(96.43%)and rapid expansion rate(2934%).They absorb liquid with 37.25 times of the own weight,show 46.5-fold liquid absorption speed and 24-fold of blood compared with random porous *** superior properties lead to strong hemostatic performance in vitro and in vivo.

关键词： Parallel microchannel Thermoelectric semiconductors Ice template Hemorrhage

Weight Gain: A Modifiable Risk Factor for Primary Cesarean Delivery

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open journal of Obstetrics and Gynecology 2017年第5期7卷 525-531页

作者： Annelee boyle julia Timofeev Sameer Desale Rita W. Driggers Donald j. Dudley Department of Obstetrics and Gynecology MedStar Washington Hospital Center Washington DC USA Department of Gynecology and Obstetrics Johns Hopkins University School of Medicine Baltimore MD USA MedStar Health Research Institute Hyattsville MD USA Department of Obstetrics and Gynecology University of Virginia School of Medicine Charlottesville VA USA

Objective: To evaluate the relationship between weight gain and primary cesarean delivery. Methods: This was a retrospective cohort study of women 5442 who delivered a singleton from 2009-2013. Women were classified as normal weight [pre-pregnancy body mass index (BMI) 18.5 - 24.9 kg/m2], overweight (pre-pregnancy BMI 25.0 - 29.9 kg/m2), obese (pre-pregnancy BMI 30.0 - 39.9 kg/m2), and extremely obese (pre-pregnancy BMI ≥ 40.0 kg/m2). Each BMI group was subdivided by weight gain—low, recommended, or excessive, as defined by the 2009 Institute of Medicine guidelines—and rates of primary cesarean delivery were compared. Results: The overall primary cesarean delivery rate was 27.3%, but this varied based on pre-pregnancy BMI. The primary cesarean delivery rate among women of normal weight was 22.3%, overweight women 27.5%, obese women 35.3%, and extremely obese women 45.7%. Among normal-weight, obese, and extremely obese women, the risk of primary cesarean delivery increased with excessive weight gain [normal weight odds ratio (OR) 1.63, (95% confidence interval 1.32 - 2.01);obese OR 1.55 (1.12 - 2.15);extremely obese OR 2.19 (1.18 - 4.08)] compared to recommended weight gain. More than half of women (53.2%) had excessive weight gain. Conclusion: Adherence to guidelines may decrease a woman’s risk of primary cesarean delivery.

关键词： Primary Cesarean Weight Gain Pre-Pregnancy BMI Obese Obesity