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Advantages of employing multilevel monitoring wells for design of tunnels subjected to multi-aquifer alluvial

Journal of Mountain Science 2021年第1期18卷 219-232页

作者： Mohsen GOLIAN Ebrahim SHARIFI TESHNIZI hamed tavasoli rostami Homayoon KATIBEH Mario PARISE Masoud MAHDAD Habib SAADAT Mehdi ABBASI Mahshid EBAD ARDESTANI Tehran Science and Research Branch Islamic Azad UniversityTehran ***Iran Department of Geology Faculty of SciencesFerdowsi UniversityMashhad 917751436Iran Mining and Metallurgical Engineering Department Amirkabir University of Technology(Tehran Polytechnic)Tehran ***Iran Earth and Environmental Sciences Department University Aldo MoroBari 70121Italy Iran University of Science and Technology Tehran ***Iran Shiraz University Shiraz ***Iran

For tunnels being excavated through multiple knowledge of the aquifers’hydraulic head becomes essential for determining groundwater inflow into the tunnel and analyzing its stability,specifically using multilevel monitoring *** the multi-aquifer alluvial section of the Glas tunnel(Iran),since the hydraulic head calculations were based on the data obtained from single-piezometer boreholes,the excavation risk was assessed to be at high level and the tunnel seemed to be unstable,thus an incorrect conclusion was derived from the misleading *** take cost mitigation measures into account,it was necessary to calculate the hydraulic head at tunnel level *** installing nested and clustered wells the mean hydraulic head was measured to be 70 m,significantly different from the 90 m previously determined by *** the updated value,the groundwater inflow and bulkhead load,formerly calculated as 0.65 m^(3)/s and 9.5 bars,were determined to be 0.49 m^(3)/s and 7.5 bars,respectively.

关键词： Nested wells Clustered wells Hydraulic head Pumping test Mechanized tunneling Iran

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Global prevalence of Ascaris infection in humans(2010–2021):a systematic review and meta-analysis

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Infectious Diseases of Poverty 2022年第6期11卷 94-95页

作者： Celia Holland Mahdi Sepidarkish Gwendoline Deslyper Ali Abdollahi Soghra Valizadeh Abolfazl Mollalo Sanaz Mahjour Sahar Ghodsian Ali Ardekani hamed Behniafar Robin B.Gasser Ali rostami 不详 Department of Veterinary Biosciences Melbourne Veterinary SchoolFaculty of Veterinary and Agricultural SciencesThe University of MelbourneParkvilleVICAustralia Infectious Diseases and Tropical Medicine Research Center Health Research InstituteBabol University of Medical SciencesBabolIran

Background:Ascariasis is one of the most important neglected tropical diseases of humans *** epidemiology of Ascaris infection appears to have changed with improvements in sanitation and mass drug administration,but there is no recent information on prevalence ***,we performed a systematic review and meta-analysis to assess the global prevalence of human Ascaris infection from 2010 to ***:We searched MEDLINE/PubMed,and Scopus databases for studies measuring prevalence of Ascaris infection,published between 1 January 2010 and 1 January *** included studies of the general human population in endemic regions,which used accepted coprodiagnostic methods,and excluded studies of people with occupations with an increased risk or probability of ascariasis and/or specifc diseases other than *** applied randomefects models to obtain pooled prevalence estimates for six sustainable development goal regions of the *** extrapolated the prevalence estimates to the global population in 2020,to estimate the number of individuals with Ascaris *** conducted multiple subgroup and meta-regression analyses to explore possible sources of heterogeneity,and to assess relationships between prevalence estimates and demographic,socio-economic,geoclimatic ***:Of 11,245 studies screened,we analysed 758 prevalence estimates for a total number of 4,923,876 participants in 616 studies from 81 *** global prevalence estimated was 11.01%(95%confdence interval:10.27–11.78%),with regional prevalences ranging from 28.77%(7.07–57.66%)in Melanesia(Oceania)to 1.39%(1.07–1.74%)in Eastern *** estimated that~732(682–782)million people harboured Ascaris worldwide in *** infected people in Latin America and the Caribbean region had a higher prevalence of high intensity infection(8.4%,3.9–14.1%).Prevalence estimates were higher in children,and people in rural communities or in countries or regions with lower income and human d

关键词： Ascaris Global prevalence Intensity of infection Systematic review Meta-analysis

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