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您的检索式：作者名="Graham Tipples"
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| 1 | Number of COVID-19 cases required in a population to detect SARS-CoV-2 RNA in wastewater in the province of Alberta, Canada:Sensitivity assessment显示文摘With a unique and large size of testing results of 1,842 samples collected from 12 wastewater treatment plants (WWTP) for 14 months through from low to high prevalence of COVID-19,the sensitivity of RT-qPCR detection of SARS-CoV-2 RNA in wastewater that correspond to the communities was computed by using Probit analysis.This study determined the number of new COVID-19 cases per 100,000 population required to detect SARS-CoV-2RNA in wastewater at defined probabilities and provided an evidence-based framework of wastewater-based epidemiology surveillance (WBE).Input data were positive and negative test results of SARS-CoV-2 RNA in wastewater samples and the corresponding new COVID-19 case rates per 100,000 population served by each WWTP.The analyses determined that RT-qPCR-based SARS-CoV-2 RNA detection threshold at 50%,80%and 99%probability required a median of 8 (range:4-19),18 (9-43),and 38 (17-97) of new COVID-19 cases/100,000,respectively.Namely,the positive detection rate at 50%,80%and 99%probability were 0.01%,0.02%,and 0.04%averagely for new cases in the population.This study improves understanding of the performance of WBE SARS-CoV-2 RNA detection using the large datasets and prolonged study period.Estimated COVID-19 burden at a community level that would result in a positive detection of SARS-CoV-2 in wastewater is critical to support WBE application as a supplementary warning/monitoring system for COVID-19 prevention and control. | Qiaozhi Li Bonita E.Lee Tiejun Gao Yuanyuan Qiu Erik Ellehoj Jiaao Yu Mathew Diggle Graham Tipples Rasha Maal-Bared Deena Hinshaw Christopher Sikora Nicholas J.Ashbolt James Talbot Steve E.Hrudey Xiaoli Pang | 2023 | Journal of Environmental Sciences2023，，3： | 2 |
| 2 | Conversion of some azaheterocyclic-acetic esters and acetonitriles into fused heterocyeles 显示文摘 | David M Mckinnon Perry Spevack Graham Tipples | 1988 | Can J Chem1988，66，： | 1 |
| 3 | 对家庭自营企业负面影响的探讨显示文摘对于第三世界城市中的家庭而言,家庭自营企业是一种必要的缓解贫困的对策。本文使用的数据来自英国国际开发部资助的关于4个国家的家庭自营企业(HBEs)比较研究报告,从中总结了若干定量数据和定性数据作为补充,由此证明许多有关禁止在家庭内部办生产性企业的政策是基于对HBEs本质的误解。政府应采取机动灵活的干预政策来扶持HBEs,同时解决他们造成的若干问题。 | Graham Tipple Justine Coulson Peter Kellett 俞静(译) | 2002 | 国外城市规划2002，17，3： | 0 |
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