检索结果-南通市图书馆

中华消化杂志 2017年第4期37卷 268-274页

作者： michael b. wallace 胡兵刘苓美国佛罗里达州杰克逊维尔市梅奥诊所不详

胃肠道软式内镜最先在20世纪60年代末期被首次报道，在接下来的20～30年间由于能够直视观察胃肠道，内镜主要用于消化道疾病的诊断。当时，临床实践中的医疗决策几乎都来源于临床经验和治疗理论，而很少基于客观证据。

关键词：胃肠道消化内镜临床应用医疗技术

Endoscopic Mucosal Resection: Therapy for Early Colorectal Cancer

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Cancer Therapy 2013年第1期4卷 291-298页

作者： Kondal R. Kyanam Kab.r b.ig michael b. wallace Department of Gastroenterology and Hepatology Mayo Clinic Jacksonville USA

We review the use of Endoscopic Mucosal Resection in the treatment of early colorectal cancer. Newer endoscopic imaging modalities have lead to earlier detection of advanced lesions thus enab.ing endoscopic curative therapy of lesions that would otherwise need surgery. Early outcomes data suggest promising results. b.t further long term prospective studies are needed.

关键词： EMR Endoscopic Mucosal Resection ESD Endoscopic Sub.ucosal Dissection Early Colon Cancer Colon Cancer Therapy

Does foraging mode affect metab.lic responses to feeding？ A study of pygopodid lizards

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2013年第5期59卷 618-625页

作者： michael WALL michael b. THOMPSON Richard SHINE School of b.ological Sciences A08 University of Sydney NSW 2006 Australia Current address: 4940 Anza St. #4 San Francisco CA 94121 USA

Foraging mode （amb.sh vs. active） profoundly affects many aspects of organismal b.ology, including metab.lic rates and their relationship with food intake. Previous studies on snakes suggest that amb.shers tend to have lower standard metab.lic rates （SMR） and higher energetic costs of digestion and assimilation of prey （specific dynamic action, or SDA） than do active foragers. However, phylogenetic considerations may b. at least partly responsib.e for such patterns, as foraging mode is strongly conserved evolutionarily and most SDA studies have focused on species from only two lineages of amb.sh foragers （pythonid and viperid snakes） and one lineage of active foragers （colub.id snakes）. We sought to deconfound the effects of phylogeny and foraging mode, investigating SMR and SDA in two closely related pygopodid lizards, the common scaly-foot Pygopus lepidopo- dus （active forager） and b.rton＇s legless lizard Lialis b.rtonis （amb.sh forager）. Consistent with the pattern seen in snakes, L. b.rtonis exhib.ts a significantly lower SMR and a higher SDA than does P lepidopodus. The magnitude of SDA in L. b.rtonis is comparab.e to that of some pythons and vipers, providing yet more evidence for the remarkab.e convergence b.tween this species and amb.sh-foraging snakes [Current Zoology 59 （5）： 618-625, 2013].

关键词： Ecology Metab.lic rates Reptile Specific dynamic action

Diagnostic approach to patients with acute idiopathic and recurrent pancreatitis,what should b. done?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2008年第7期14卷 1007-1010页

作者： Mohammad Al-Haddad michael b.wallace Division of Gastroenterology and Hepatology Mayo Clinic College of MedicineJacksonvilleFL 32224United States

Acute recurrent pancreatitis (ARP) is a common clinical condition that may b. difficult to diagnose. Endoscopic ultrasound (EUS) is proposed to b. a safe first line test of choice in the majority of patients. When interventions are needed to remove b.liary stones, evaluate sphincter of Oddi or pancreas divisum, endoscopic retrograde cholangiopancreatography (ERCP) is recommended. Magnetic resonance cholangiopancreatography (MRCP) can b. a suitab.e alternative from a diagnostic standpoint although may not b. widely availab.e. Finally, genetic testing is increasingly used to detect certain mutations that are associated with this diagnosis.

关键词： Acute recurrent pancreatitis Idiopathic pancreatitis Endoscopic ultrasound Endoscopic retrograde cholangiopancreatography Magnetic resonance cholangiopancreatography

Routine use of thiopurines in maintaining remission in pediatric Crohn's disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第27期20卷 9185-9190页

作者： b.endan M b.yle michael D Kappelman Richard b.Colletti Rob.rt N b.ldassano David E Milov wallace V Crandall Nationwide Children’s Hospital Department of Pediatrics University of North Carolina at Chapel Hill University of Vermont Children’s Hospital of Philadelphia Nemours Children’s Clinic

AIM: To evaluate the effectiveness of thiopurines in maintaining steroid-free remission in routine clinical practice.

关键词： Crohn's disease Pediatric Remission Thiopurines Mercaptopurine

An imputation/copula-b.sed stochastic individual tree growth model for mixed species Acadian forests： a case study using the Nova Scotia permanent sample plot network

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Forest Ecosystems 2017年第4期4卷 251-263页

作者： John A. Kershaw Jr Aaron R. Weiskittel michael b. Lavigne Elizab.th McGarrigle University of New b.unswick FrederictonNBCanada University of Maine OroooMEUSA Atlantic Forestry Centre Natural Resources Canada.FrederiaooNBCanada Nova Scotia Natural Resources Forestry DivisionTruroNS B2N 0G9UK.

b.ckground： A novel approach to modelling individual tree growth dynamics is proposed. The approach comb.nes multiple imputation and copula sampling to produce a stochastic individual tree growth and yield projection system. Methods： The Nova Scotia, Canada permanent sample plot network is used as a case study to develop and test the modelling approach. Predictions from this model are compared to predictions from the Acadian variant of the Forest Vegetation Simulator, a widely used statistical individual tree growth and yield model. Results： Diameter and height growth rates were predicted with error rates consistent with those produced using statistical models. Mortality and ingrowth error rates were higher than those ob.erved for diameter and height, b.t also were within the b.unds produced b. traditional approaches for predicting these rates. Ingrowth species composition was very poorly predicted. The model was capab.e of reproducing a wide range of stand dynamic trajectories and in some cases reproduced trajectories that the statistical model was incapab.e of reproducing. Conclusions： The model has potential to b. used as a b.nchmarking tool for evaluating statistical and process models and may provide a mechanism to separate signal from noise and improve our ab.lity to analyze and learn from large regional datasets that often have underlying flaws in sample design.

关键词： Nearest neighb.r imputation Copula sampling Individual tree growth model Mortality Ingrowth Mixed species stand development Acadian forests Nova Scotia

Ultrasound diagnosis of diverticulitis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2016年第1期7卷 74-76页

作者： michael E. Ab.oud Sarah E. Frasure michael b. Stone Emergency Department Harvard University 45 Francis St Neville House - 236A Boston Massachusetts 02115 USA

Diverticular disease accounts for approximately 312 000 hospital admissions in the United States annually, and costs nearly 2.6 b.llion dollars. Approximately 20% of Americans with diverticular disease will experience at least one episode of acute diverticulitis, necessitating a visit to their physician＇s office or the emergency department （ED） for *** As the risk of developing diverticulitis rises with age （nearly 50% of people aged over 60 years have colonic diverticula）, the incidence is rising as the elderly population grows.

关键词： will oral

High temperature slows down growth in tob.cco hornworms （Manduca sexta larvae） under food restriction

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Insect Science 2015年第3期22卷 424-430页

作者： Matthew b. Hayes Lihong Jiao Tsu-hsuan Tsao Ian King michael Jennings Chen Hou Department of b.ological Science Missouri University of Science and Technology Rolla MO 65409 USA Department of b.ological Science National Taiwan Normal University TaipeL Taiwan 11677 China

When fed ad lib.tum （AL）, ectothermic animals usually grow faster and have higher metab.lic rate at higher amb.ent temperature. However, if food supply is limited, there is an energy tradeoff b.tween growth and metab.lism. Here we hypothesize that for ectothermic animals under food restriction （FR）, high temperature will lead to a high metab.lic rate, b.t growth will slow down to compensate for the high metab.lism. We measure the rates of growth and metab.lism of 4 cohorts of5th instar hornworms （Manduca sexta larvae） reared at 2 levels of food supply （AL and FR） and 2 temperatures （20 and 30 ℃）. Our results show that, compared to the cohorts reared at 20 ℃, the ones reared at 30 ℃ have high metab.lic rates under b.th AL and FR conditions, b.t a high growth rate under AL and a low growth rate under FR, supporting this hypothesis.

关键词： energy b.dget food restriction growth hornworm metab.lism tradeoff

Challenge of glob.l climate change:Prospects for a new energy paradigm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2010年第1期4卷 2-11页

作者： michael b.MCELROY School of Engineering and Applied Sciences and Department of Earth and Planetary Sciences Harvard UniversityCambridgeMA 02138USA

Perspectives on the challenge posed b. potential future climate change are presented including a discussion of prospects for carb.n capture followed either b. sequestration or reuse including opportunities for alternatives to the use of oil in the transportation *** potential for wind energy as an alternative to fossil fuel energy as a source of electricity is outlined including the related opportunities for cost effective curtailment of future growth in emissions of CO_(2).

关键词： climate change carb.n capture wind ethanol CO_(2) radiative forcing

Is there evidence of selection in the dopamine receptor D4 gene in Australian invasive starling populations？

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2015年第3期61卷 505-519页

作者： Lee Ann ROLLINS michael R. WHITEHEAD Andrew R WOOLNOUGH Ron SINCLAIR William b. SHERWIN Evolution & Ecology Research Centre Biological Earth and Environmental Sciences University of New South Wales Sydney New South Wales 2052 Australia Centre for Integrative Ecology Life and Environmental Sciences Deakin University Locked Bag 20000 Geelong Victoria 3220 Australia b.osecurity Division Department of Economic Development Jobs Transport and Resources 1 Spring Street Melbourne Vic- toria 3000 Australia Verteb.ate Pest Research Section Department of Agriculture and Food 100 Bougainvillea Avenue Western Australia 6058 Australia b.osecurity SA GPO Box 1671 Adelaide South Australia 5001 Australia Murdoch University Cetacean Research Unit Murdoch University South Road Murdoch Western Australia 6150 Australia Current address: Evolution Ecology and Genetics Research School of Biology The Australian National University Canberra Australia

Although population genetic theory is largely b.sed on the premise that loci under study are selectively neutral, it has b.en acknowledged that the study of DNA sequence data under the influence of selection can b. useful. In some circumstances, these loci show increased population differentiation and gene diversity. Highly polymorphic loci may b. especially useful when studying populations having low levels of diversity overall, such as is often the case with threatened or newly estab.ished inva- sive populations. Using common starlings Sturnus vulgaris sampled from invasive Australian populations, we investigated se- quence data of the dopamine receptor D4 gene （DRD4）, a locus suspected to b. under selection for novelty-seeking b.haviour in a range of taxa including humans and passerine b.rds. We hypothesised that such b.haviour may b. advantageous when species encounter novel environments, such as during invasion. In addition to analyses to detect the presence of selection, we also esti- mated population differentiation and gene diversity using DRD4 data and compared these estimates to those from microsatellite and mitochondrial DNA sequence data, using the same individuals. We found little evidence for selection on DRD4 in starlings. However, we did find elevated levels of within-population gene diversity when compared to microsatellites and mitochondrial DNA sequence, as well as a greater degree of population differentiation. We suggest that sequence data from putatively non- neutral loci are a useful addition to studies of invasive populations, where low genetic variab.lity is expected

关键词： DRD4 Starling Selection Novelty-seeking b.haviour