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Comparative Study on Various Strength Parameters of Structural Elements Made from Cross-Laminated Timber

Journal of Renewable Materials 2022年第6期10卷 1575-1606页

作者： mohammad anwar-us-saadat Janeshka Goonewardena Bidur Kafle Mahmud Ashraf Mahbube Subhani School of Engineering Technology-Civil Melbourne PolytechnicEpping3076Australia School of Engineering Deakin UniversityWaurn Ponds3216Australia

Cross laminated timber(CLT)is an innovative and environment friendly engineered timber product with superior structural *** offers strong resistance against both in-plane and out-of-plane ***,it is widely used as floors,roofs or wall *** experimental research on CLT under various loading conditions has been done in the recent *** article presents a comprehensive review of various design methods to determine basic mechanical properties such as tension,compression and rolling shear strength of CLT with primary focus on Norway *** relevant experimental data available from existing literature were collated and consequently been used to evaluate the performance of various methods to design CLT *** comparison revealed that different methods show considerable variance in predicting the capacity of CLT panels due to the variation in timber species,which affects the corresponding mechanical properties of the *** addition to species,rolling shear properties can also vary considerably depending on the type of experimental technique used for testing.A predictive model has also been proposed to correlate rolling shear strength obtained from shear analogy method to that obtained using planar shear.

关键词： Cross-laminated timber mass timber mechanical strength rolling shear strength planar shear test short span bending test

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A comparison of handheld and standard ultrasound in Swiss medical students

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World Journal of Emergency Medicine 2022年第2期13卷 85-90页

作者： Mark Slader Hayley Young Margot Barker Kylie Prentice Katherine Bogaard Charlene Yuan Soheil saadat Shadi Lahham School of Medicine University of CaliforniaIrvine 92617USA Department of Emergency Medicine University of CaliforniaIrvine 92868USA

BACKGROUND:The use of ultrasound(us)within healthcare has inspired the development of new us *** have been few studies comparing the use of handheld us to standard us for medical *** research aims to determine whether a handheld us device can provide a comparable primary learning experience to that of a standard us ***:Over two days of instruction,participants were taught and evaluated on core us *** standard group received instruction on standard us machines,while the handheld group received instruction on handheld us *** completed a qualitative survey regarding their *** hundred and four images were obtained and graded by two emergency medicine ***:A total of 119 Swiss medical students were enrolled in our *** was no statistically significant difference in the us assessment measurements,except for faster endpoint septal separation(EPSS)vascular setup time in the handheld group(P=0.001).There was no statistically significant difference in participants’perceived difficulty of us learning(P=0.198),comfort level(P=0.188),or self-estimated capability to perform us in the future(P=0.442).There was no statistically significant difference in the percentage of correctly obtained images(P=0.211)or images that were clinically useful(P=0.256).The median quality score of images obtained by the standard group was eight compared to seven in handheld group(PusION:Our data suggest a handheld us machine can perform as well as a standard us machine as an educational tool despite sacrifices in image quality.

关键词： Handheld ultrasound Ultrasound education Switzerland Medical education

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Road traffic crashes in rural setting： an experience of a middle-income country

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Chinese Journal of Traumatology 2014年第6期17卷 327-330页

作者： Ali Davoudi-Kiakalayeh Reza mohammadi Shahrokh Yousefzade-Chabok Sohiel saadat Division of Social Medicine Department of Public Health Sciences Karolinska Institutet Tomtebodavagen 18A SE-17176 Stockholm Sweden Guilan Road Trauma Research Center Guilan University of Medical Science Rasht Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Iran

ObjectiveTo 日期，在那里，很少信息都没在农村道路事故死亡的死亡上被出版。使用损害方法麻烦探索由于道路交通丧生的年的更精确的估计的这研究垮掉在 Guilan 省发生在四年的经期上，从 2009～2013 的北 *** 道路事故死亡从 Iran’s ... 详细信息

ObjectiveTo 日期，在那里，很少信息都没在农村道路事故死亡的死亡上被出版。使用损害方法麻烦探索由于道路交通丧生的年的更精确的估计的这研究垮掉在 Guilan 省发生在四年的经期上，从 2009～2013 的北 *** 道路事故死亡从 Iran’s 法庭的药被提取系统，死亡登记系统和道路损伤研究中心 *** 学习经期，生活的年由于机动车辆碰撞失去了的一般水准每 1 000 个人是 13.8 ，从 11.9 duri 从这研究获得的信息在致命的道路交通上提供一个新观点在农村背景砸碎牺牲品并且给我们看更多的注意在这个区域被需要。

关键词：道路交通事故农村道路死亡人数收入设置中心数据库农村公路农村环境

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