维普中文期刊产品整合服务
7篇 您的检索式:作者名="Joe RYAN"
    题名 作者 年代 出处 被引量
1Geotechnical risk management to prevent coal outburst in room-and-pillar mining显示文摘A coal outburst is a severe safety hazard in room-and-pillar mining under deep cover. It is more likely to occur during pillar retreating. Multi-seam mining dramatically increases the risk of coal outburst within the influence zones created by remnant pillars and gob-solid boundaries. Though coal outburst is generally associated with heavy loading of coal pillars,its occurrence is difficult to predict. Risk management provides a proactive tool to minimize coal outburst in room-and-pillar mining under deep cover. Risk assessment is the first step in identifying and quantifying outburst risk factors. The primary risk factors for coal outburst are overburden depth,roof and floor strength,geological anomalies,mining type,multi-seam mining,and panel width. A risk assessment chart can be used to proactively screen out mining sections with high risk of coal outburst for further analysis. Gob-solid boundaries and remnant pillars are critical factors in evaluation of the coal outburst risk of multi-seam mining. Risk identification,risk assessment,geologic influence mapping,geotechnical evaluation,risk analysis,risk mitigation,and monitoring are essential elements of coal outburst risk management process. Training is an integral part of risk management for risk identification and communication between all the stakeholders including management,technical and safety personnel,and miners.zhang peter peterson scott neilans dan wade scott mc grady ryan pugh joe 2016International Journal of Mining Science and Technology2016,26,1:8
2Antimagic Labeling of Generalized Pyramid Graphs显示文摘An antimagic labeling of a graph withq edges is a bijection from the set of edges to the set of positive integers{1,2,...,q}such that all vertex weights are pairwise distinct,where the vertex weight of a vertex is the sum of the labels of all edges incident with that vertex.A graph is antimagic if it has an antimagic labeling.In this paper,we provide antimagic labelings for a family of generalized pyramid graphs.Subramanian ARUMUGAM Mirka MILLER Oudone PHANALASY Joe RYAN 2014Acta Mathematica Sinica,English Series2014,30,2:2
3Interpretation of metal concentrations in estuarine sediments of Florida using aluminum as a reference element显示文摘Steven J. Schropp F. Graham Lewis Herbert L. Windom Joe D. Ryan Fred D. Calder Louis C. Burney 1990Estuaries1990,,3:1
4Adult Current Smoking: Differences in Definitions and Prevalence Estimates—NHIS and NSDUH, 2008显示文摘Heather Ryan Angela Trosclair Joe Gfroerer Cristine Delnevo 2012Journal of Environmental and Public Health2012,,:1
5Dual-shell silicate and alumina coating for long lasting and high capacity lithium ion batteries显示文摘Here we demonstrate a theory-driven, novel dual-shell coating system of Li_(2)SrSiO_(4) and Al_(2)O_(3), achieved via a facile and scalable sol-gel technique on LiCoO_(2) electrode particles. The optimal thickness of each coating can lead to increased specific capacity(~185 m Ah/g at 0.5 C-rate) at a cut-off potential of 4.5 V, and greater cycling stability at very high C rates(up to 10 C) in half-cells with lithium metal. The mechanism of this superior performance was investigated using a combination of X-ray and electron characterization methods. It shows that the results of this investigation can inform future studies to identify still better dual-shell coating schemes, achieved by such industrially feasible techniques, for application on similar, nickel-rich cathode materials.Marcos Lucero Tucker M.Holstun Yudong Yao Ryan Faase Maoyu Wang Alpha T.N’Diaye David P.Cann Joe Baio Junjing Deng Zhenxing Feng 2022Journal of Energy Chemistry2022,31,5:0
6Human epidermal growth factor receptor 2 positive rates in invasive lobular breast carcinoma: The Singapore experience显示文摘BACKGROUND Invasive lobular carcinomas(ILC)form 5%-10%of breast cancer and rarely show overexpression of human epidermal growth factor receptor 2(HER2).AIM To describe the prevalence and prognostic factors of HER2 positive(HER2+)ILC in an Asian population.METHODS A retrospective review of patients with ILC seen between January 1985 and March 2018 at various SingHealth medical institutions was conducted.Demographic and clinical data were collected from medical records.We examined clinicopathological characteristics and survival in relation to HER2 status.RESULTS A total of 864 patients were included.Prevalence of HER2 positivity was 10.1%(87 patients).Compared with HER2 negative(HER2-)ILC,HER2+ILC was associated with a higher proportion of estrogen receptor negative(24.4%vs 5.9%,P<0.001),progesterone receptor negative(PR-)(40.2%vs 24%,P=0.002)and grade 3 tumours(Grade 3,29.0%vs 10.2%,P<0.001).Overall survival rate was poorer in patients with HER2+compared to HER2-ILC(56.7%vs 72.9%alive at 10 years;hazard ratio 1.87,95%confidence interval:1.21-2.90,P=0.004).Based on multivariate analysis,negative prognostic factors for overall survival included HER2 positivity,PR negativity,older age,Indian ethnicity and higher tumour stage.CONCLUSION Prevalence of HER2+ILC was 10.1%.HER2+ILC was more likely to have poorer prognostic features such as estrogen receptor negative,PR-and higher tumour grade,and have a poorer survival.Ga-Jing Kee Ryan Ying-Cong Tan Sultana Rehena Joycelyn Jie-Xin Lee Ma Wai-Wai Zaw Wei-Xiang Lian Joe Yeong Su-Ming Tan Swee-Ho Lim Benita Kiat-Tee Tan Yoon-Sim Yap Rebecca Alexandra Dent Fuh-Yong Wong Guek-Eng Lee 2020World Journal of Clinical Oncology2020,11,5:0
7可再生能源显示文摘特朗普能源政策或将殃及风能和太阳能行业 特朗普政府正计划2018年开始实施一系列举措,最终可能对风能和太阳能行业造成损害。这些举措中包括要求监管部门修订电力市场管理规定、修改税则、对进口外国太阳能电池板征收关税。最受关注的新举措之一可能与已经破产的太阳能电池板企业Suniva有关,Joe Ryan Brian Eckhouse 2017商业周刊(中文版)2017,0,23:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费