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Turbulence modelling of the aerodynamic interaction ofOGV wakes and diffuser flow

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航空动力学报 2011年第10期26卷 2302-2312页

作者： page Gary McGuirk Jim Department of Aeronautical and Automotive Engineering Loughborough University

Different turbulence closures were used to predict the flow interaction between the wakes created by compressor outlet guide vanes(OGVs) and a downstream annular *** statistical turbulence models were tested based on the classical Reynolds-averaged Navier-Stokes(RANS) *** high-Re and low-Re(Launder-Sharma) versions of the k-ε model were applied to a selected test problem for OGV wake/diffuser *** test problem was specifically chosen because experimentally determined inlet conditions and both profile and performance data were available to validate predictions.A preliminary study was also reported of the more advanced large eddy simulation(LES) *** LES sub-grid-scale(SGS) model was the basic Smagorinsky eddy viscosity assumption,with a Van-Driest damping function for improved capture of near-wall viscous *** between the two RANS models showed little difference in terms of velocity contours at OGV trailing edge and diffuser *** terms of overall diffuser performance(static pressure recovery and total pressure loss coefficients),the high-Re model was shown to agree well with experimental *** preliminary LES study indicates the highly unsteady character of the OGV wake flow,but requires improved treatment of inlet conditions.

关键词： outlet guide vane(OGV) wakes diffuser flow interaction Reynolds-averaged Navier-Stokes(RANS) modelling large eddy simulation(LES) modelling

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近海场址地震活动性及地震动的评定

世界地震工程 1983年第6期 107-113页

作者： Robert a.page 陈达生

序言为了致力于满足国家对能源的需要,正考虑于八十年代在美国边界的许多新的大陆架地区开发石油和天然气。在所考虑的区域中,有一些处于地震活动性强烈的太平洋沿岸。在这些地区实现开发石油和其他矿产资源,需要仔细地评定近海环境的... 详细信息

序言为了致力于满足国家对能源的需要,正考虑于八十年代在美国边界的许多新的大陆架地区开发石油和天然气。在所考虑的区域中,有一些处于地震活动性强烈的太平洋沿岸。在这些地区实现开发石油和其他矿产资源,需要仔细地评定近海环境的地震危险

关键词：地震动地震地震活动性地震定位场址

Androgens and prostate disease

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Asian Journal of Andrology 2014年第2期16卷 248-255,I0009页

作者： Lori A Cooper Stephanie T page Departments of Medicine Division of Endocrinology and Metabolism University of Washington Seattle University of Washington and Harborview Medical Center Seattle Washington USA.

A growing body of literature has established the anabolic benefits of testosterone （T） therapy in hypogonadal men. However, there remains a paucity of data regarding the risks of exogenous androgen use in older men and the potential for adverse effects on the prostate gland. Whether T therapy in older, hypogonadal men might worsen lower urinary tract symptoms or exacerbate, unmask, or even incite prostate cancer development has tempered enthusiasm for T therapy, while known prostatic disease has served as a relative contraindication to T therapy. Androgens are necessary for the development and maintenance of the prostate gland. However, epidemiologic studies do not consistently find a positive relationship between endogenous serum androgen concentrations and the risk of prostate disease. Recent data demonstrate that 5α-reductase inhibitors decrease the risk of low-grade prostate cancer, suggesting that modifying androgen metabolism may have beneficial effects on prostate health, yet similar reductions in high-grade disease have not been observed, thereby questioning the true clinical benefits of these agents for chemoprevention. Knowing how to best investigate the relationship between androgens and the development of prostate disease given the lack of large, randomized trials is difficult. Accumulating data challenges the assumption that alterations in serum androgens have parallel effects within the prostate hormonal environment or change androgen-regulated processes within the gland. Long-term intervention studies are needed to truly ascertain the effects of androgen manipulation on prostate tissue and disease risk. However, available data do not support the notion that restoring serum androgens to normal physiologic ranges drives prostate disease.

关键词： androgens male hypogonadism prostate testosterone

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断层物理学研究计划

地震地质译丛 1993年第4期15卷 63-64页

作者： Robert a.page 高祥林

在1991—1995年美国地质调查局减轻地震灾害计划中,断层物理学研究是五个重点项目之一。该项目的目标是理解地震震源,也就是要搞清楚地震断层运动为什么会发生,它是怎样发生的,这是减轻地震灾害计划要解决的一个基本问题,以便为发展有... 详细信息

在1991—1995年美国地质调查局减轻地震灾害计划中,断层物理学研究是五个重点项目之一。该项目的目标是理解地震震源,也就是要搞清楚地震断层运动为什么会发生,它是怎样发生的,这是减轻地震灾害计划要解决的一个基本问题,以便为发展有效而可靠的减灾手段提供坚实的科学基础。没有这样的基础知识,地震灾害评价方法必然是经验性的和现象学的。当以可靠的观测资料为基础时,这些方法可能是有用的;

关键词：断层物理学地震研究计划

Otitis media with effusion in children: Pathophysiology, diagnosis, and treatment.A review

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Journal of Otology 2019年第2期14卷 33-39页

作者： Pauline Vanneste Cyril page Department of Otorhinolaryngology and Head & Neck Surgery Amiens University Hospital

Otitis media with effusion(OME)is a frequent paediatric *** condition is often asymptomatic,and so can easily be ***,OME can lead to hearing loss that impairs the child's language and behavioural *** diagnosis is essentially clinical,and is based on otoscopy and(in some cases)*** endoscopy is only indicated in cases of unilateral OME or when obstructive adenoid hypertrophy is *** media with effusion is defined as the observation of middle-ear effusion at consultations three months *** must be evaluated(using an age-appropriate audiometry technique)before and after treatment,so as not to miss another underlying cause of deafness(*** deafness).Craniofacial dysmorphism,respiratory allergy and gastro-oesophageal reflux all favour the development of *** a certain number of medications(antibiotics,corticoids,antihistamines,mucokinetic agents,and nasal decongestants)can be used to treat OME,they are not reliably effective and rarely provide long-term *** benchmark treatment for OME is placement of tympanostomy tubes(TTs)and(in some cases)adjunct *** TTs rapidly normalize hearing and effectively prevent the development of cholesteatoma in the middle *** contrast,TTs do not prevent progression towards tympanic atrophy or a retraction *** enhances the effectiveness of *** children with adenoid hypertrophy,adenoidectomy is indicated before the age of 4 but can be performed later when OME is identified by nasal *** must be followed up until OME has disappeared completely,so that any complications are not missed.

关键词： Otitis media with effusion Tympanostomy tube Ventilation tube Grommet Child

Fifty Years of Water Sensitive Urban Design, Salisbury, South Australia

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Frontiers of Environmental Science & Engineering 2017年第4期11卷 63-72页

作者： John C. Radcliffe Declan page Bruce Naumann Peter Dillon CSIRO Land and Water Private Bag 2 Glen Osmond South Australia 5064 Australia City of Salisbury 12 James St Salisbury South Australia 5108 Australia

Australia has developed extensive policies and guidelines for the management of its water. The City of Salisbury, located within metropolitan Adelaide, South Australia, developed rapidly through urbanisation from the 1970s. Water sensitive urban design principles were adopted to maximise the use of the increased rim-off generated by urbanisation and ameliorate flood risk. Managed aquifer recharge was introduced for storing remediated low-salinity stormwater by aquifer storage and recovery （ASR） in a brackish aquiter for subsequent lrngatlon. Ibis paper outlines now a municipal government has progressively adopted principles of Water Sensitive Urban Design during its development within a framework of evolving national water policies. Salisbury＇s success with stormwater harvesting led to the formation of a pioneering w aterbusiness that includes linking projects from nine sites to provide a non-potable supply of 5 ×10^6 m^3 year. These installations hosted a number of applied research projects addressing well configuration, water quality, reliability and economics and facilitated the evaluation of its system as a potential potable water source. The evaluation showed that while untreated stonnwater contained contaminants, subsurface storage and end-use controls were sufficient to make recovered water sale for public open space irrigation, and with chlorination acceptable lbr third pipe supplies. Drinking water quality could be achieved by adding microfiltration, disinfection with UV and chlorination. The costs that would need to be expended to achieve drinking water safety standards were found to be considerably less than the cost of establishing dual pipe distribution systems. The full cost of supply was determined to be AUD$1.57 m ＂ for non-potable water for pubhc open space lrngatlon much cheaper than mares water, AUD $3.45 m at that time. Producing and storing potable water was found to cost AUDS1.96 to $2.24 m .

关键词： Managed Aquifer Recharge (MAR) Stormwater harvesting Water recycling drinking water Low impact development Water sensitive urban design

A role for dihydrotestosterone treatment in older men？

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Asian Journal of Andrology 2011年第2期13卷 199-200页

作者： Mara Y Roth Stephanie T page University of Washington Medical Center 1959 NEPacific St Box 357138 Seattle WA 98195 USA

Androgens play a vital role in the main- tenance of health in normal *** supports bone development and strength, provides anabolic effects for maintenance of lean muscle mass, and contributes to normal sexual function... 详细信息

关键词： Androgens Men Health Testosterone Experimentation Growth Aging Uses Associations Prostate

Hybrid Predictive Ensembles:Synergies Between Human and Computational Forecasts

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Journal of Social Computing 2021年第2期2卷 89-102页

作者： Lu Hong PJ Lamberson Scott E page Department of Finance Loyola University ChicagoChicagoIL 606002USA Department of Communication University of California at Los Angeles(UCLA)Los AngelesCA 90095USA School University of MichiganAnn ArborMI 48104USA

An increasing proportion of decisions,design choices,and predictions are being made by hybrid groups consisting of humans and artificial intelligence(AI).In this paper,we provide analytic foundations that explain the potential benefits of hybrid groups on predictive tasks,the primary use of *** analysis relies on interpretive and generative signal frameworks as well as a distinction between the big data used by AI and the thick,often narrative data used by *** derive several conditions on accuracy and correlation necessary for humans to remain in the *** conclude that human adaptability along with the potential for atypical cases that mislead AI will likely mean that humans always add value on predictive tasks.

关键词： collective intelligence predictive models hybrid groups big data thick data

Potassium channel blockers restore axonal conduction in CNS trauma and diseases

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Neural Regeneration Research 2016年第8期11卷 1226-1227页

作者： Jessica C.page Riyi Shi Department of Basic Medical Sciences College of Veterinary MedicinePurdue University Weldon School of Biomedical Engineering Purdue University

Myelin damage in the central nervous system（CNS）plays an important role in motor and sensory dysfunction（Shi and Sun,2011）.This neuropathology is observed widely in neurotrauma such as spinal cord injuries（SCI）and is also a distinguishing feature of many neurological diseases such as multiple sclerosis（MS）and amyotrophic lateral sclerosis（ALS）（Shi and Sun,2011）.

关键词： conduction axonal restore amyotrophic myelin trauma consequences neurological potassium distinguishing