Results 11 to 20 of about 37,350,474 (331)
COVID-19: Test, Test and Test [PDF]
Medical Sciences, 2020 A new virus was identified in late December 2019 when China reported the first cases of pneumonia in Wuhan, and a global COVID-19 pandemic followed. The world was not late to respond, with a number of sweeping measures ranging from social distancing protocols, stringent hygienic practices, and nation-wide lockdowns, as well as COVID-19 testing ...
Fatima A Saleh, Aleen Sleem
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Study on CO2 Emission Characteristics of China VI Heavy Duty Diesel Engine [PDF]
E3S Web of Conferences, 2022 CO2 emission control is of great urgency, and the decrease of heavy-duty diesel engines’ CO2 emission is one of the significant methods to reduce CO2 emission. This paper uses a full-flow constantvolume dilution sampling system to experiment on the China
Zhang Mingzhi +4 more
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Archives of Pediatrics & Adolescent Medicine, 2002 Clinical Presentation: A 5-year-old girl of Ashkenazi origin was referred to our pediatric endocrine clinic because of short stature. The child generally had good health aside from several episodes of otitis media. She was born at term after a normal pregnancy and delivery; birth weight was 2400 g, and birth length was not recorded.
Orit, Pinhas-Hamiel, Anat, Achiron
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Shipin gongye ke-ji, 2023 A gas chromatography method was established to simultaneously detect 26 kinds of organophosphorus pesticide residuesin wheat germ samples, such as dichlorvos, ethoprophos, and cadusafos.
Tingting LI +6 more
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Red, Yellow, Green: Test, Test, Test
Made in China Journal, 2023 When the Health Code was in use in China, the local governments of Shenzhen and Changsha, like many others, required individuals to present a ‘green code’to move within and between locations. In this essay, we focus on moments when green codes unexpectedly turned yellow.
Tao, Han +2 more
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Feasibility study on mornitoring NOx emissions of China-VI natural gas engines with the NOx sensor [PDF]
E3S Web of Conferences, 2022 Based on a heavy-duty stoichiometric natural gas engine which can meet the requirement of China-VI regulations, steady-state and transient cycles were carried out to measure the exhaust NOx concentration out of TWC by a NOx sensor and a gaseous emission ...
Zhang Lin, Chen Xiong, Li Su, Zou Lin
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Investigation of methods for measuring fuel economy and emissions of heavy-duty hybrid-electric vehicles (HEVs) [PDF]
E3S Web of Conferences, 2022 Hybrid-electric vehicles can achieve low fuel consumption and emission by optimal combination of electrical energy and internal combustion engine power.
Zhao Jianfu +5 more
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Application of molecular simulation in mobile phase development of HPLC [PDF]
E3S Web of ConferencesThe selection of mobile phase is significant for the separation result of HPLC, for it may have influence on the quantitative analysis. During HPLC analysis, engineers usually use (water-acetonitrile) mobile phase system to separate aldehydes and ketones,
Wang Yanmeng +8 more
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Flutter/ASE Flight Test Risk Control Technique of Civil Fly-by-wire Aircraft
Hangkong gongcheng jinzhan, 2022 The existing research on flight test risk control techniques related to flutter/ASE test is not systematic enough,and has limited consideration of civil fly-by-wire aircraft characteristic and onboard flight test engineer.The flutter/ASE flight test risk
WANG Haigang, ZHANG Shaoyun
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