检索结果-南通市图书馆

Supersonic Travel Seeks an Encore

在线全文

学校读者我要写书评

暂无评论

Engineering 2022年第3期8卷 1-3页

作者： Sean O’Neill senior Technology Writer

In June 2021,United Airlines,one of the largest airline operato rs in the world,signed a deal with Boom Supersonic of Denver,CO,USA,to purchase 15 supersonic"Overture"airliners,with an option to buy 35 more[1].To fulfil the contract,Boom Supersonic must first build the aircraft,and do so in accordance with United Airline’s safety,operating,and sustainability requirements.

关键词： purchase aircraft contract

Satellite Tracking and Global Treaty Effort Open New Front on Plastic Waste Problem

在线全文

学校读者我要写书评

暂无评论

Engineering 2022年第10期17卷 3-6页

作者： Sean O’Neill senior Technology Writer

As the rate of plastic production continues to climb towards a projected billion tonnes(Gt)a year by 2050(Fig.1)and the volume of plastic waste grows accordingly,a new satellite-based platform launched in May 2022 has... 详细信息

关键词： pollution continue Open

Climate Change Action Alights on Satellite Detection of Methane

在线全文

学校读者我要写书评

暂无评论

Engineering 2022年第9期16卷 9-12页

作者： Sean O’Neill senior Technology Writer

In an era of unwelcome broken records in climate change,2021delivered yet *** to figures released in January2022 by the US National Oceanic and Atmospheric Administration(NOAA)[1,2],the record for the annual net increase in atmospheric methane was broken for the second year in a row,hitting an estimated 17 parts per billion(ppb).The increase puts methane’s atmospheric concentration at 1909 ppb(Fig.1),more than 2.5times its pre-industrial levels[3].

关键词： atmospheric methane Action

Start-Ups Seek to Accelerate Path to Nuclear Fusion Mitch Leslie

在线全文

学校读者我要写书评

暂无评论

Engineering 2022年第5期8卷 6-8页

作者： Mitch Leslie senior Technology Writer

In September 2021,the world’s most powerful high-temperature superconducting magnet passed its first test,generating a 20 T magnetic field during a 5 h trial[1].The 3 m tall,9000 kg device(Fig.1)is the centerpiece of an ambitious plan by the start-up Commonwealth Fusion Systems,headquartered in Cambridge,MA,USA,to build a fusion reactor that produces more energy than it requires to stimulate and sustain its nuclear reactions[2,3].None of the experimental fusion approaches that scientists have tested has come close to that *** the multi-billion USD International Thermonuclear Experimental Reactor(ITER),the massive project sponsored by 35 countries that is under construction in southern France(Fig.2),is not projected to pass the breakeven point until the mid-2030s at the earliest[2,4].But Commonwealth Fusion Systems aims to have a pilot plant operating by 2025.

关键词： generating massive Commonwealth

First Pig-to-Live Human Xenotransplant Produces Mixed Results

在线全文

学校读者我要写书评

暂无评论

Engineering 2022年第9期16卷 6-8页

作者： Sarah C.P.Williams senior Technology Writer

On 7 January 2022,a 57-year-old man with terminal heart disease became the first living human to receive a genetically modified pig organ—a heart—transplanted into his chest during a 8 h surgery at the University of Maryland Medical Center in Baltimore,MD,USA(Fig.1)[1].The pig heart,provided by the biotechnology company Revivicor(Blacksburg,VA,USA),had ten gene modifications intended to boost the chances of a successful pig-to-human transplant.

关键词： Maryland Human boost

Direct Air Carbon Capture Takes Baby Steps——Giant Strides Are Needed

在线全文

学校读者我要写书评

暂无评论

Engineering 2022年第1期8卷 3-5页

作者： Sean O’Neill senior Technology Writer

In September 2021, the world’s largest industrial plant to pull carbon dioxide（CO;） directly out of the atmosphere officially became operational in Iceland. Designed and built by the Zurich,Switzerland-based company Climeworks, its "Orca" facility-the company claims-can remove and permanently store 4000 t of CO;per year（Fig. 1） [1].

关键词：

Profile of Factors of Arduous Work among Healthcare Professionals in Healthcare Facilities in Northern Benin in 2021

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Occupational Diseases and Environmental Medicine 2024年第1期12卷 41-48页

作者： Gounongbé Ahoya Christophe Fabien Mama Cissé Ibrahim Lompo Marthe Sandrine Azandjèmè Colette Bèhanzin Luc Faculty of Medicine University of Parakou Parakou Benin Health Sciences Training and Research Unit Joseph Ki-Zerbo University Ouagadougou Burkina Faso Regional Institute of Public Health of Ouidah University of Abomey-Calavi Abomey-Calavi Benin National Training School for senior Technicians in Public Health and Epidemiological Surveillance University of Parakou Parakou Benin

Introduction: Work environments create the basis for arduous nursing work. This is what led us to research the factors of arduousness in the exercise of the health profession in North Benin, through this study. Methods: This is a cross-sectional and descriptive study which focused on health professionals in the health zones of Parakou-N’dali and Tchaourou. The sampling was an exhaustive census. All health workers who had given their free and informed consent were included. The data was collected using a questionnaire. The variables studied were the factors of arduous work and socio-professional characteristics. The data collected was processed and analyzed with the Epi info 7.***.0.1 software. Results: A total of 692 were surveyed, the participation rate was 85.11% and the sex ratio (M/F) equal to 0.7. The average age was 38 years old. Nurses made up 32.66% of the sample. They were 86.42% subject to night work and 82.66% to alternating work. Overall, 70.23% worked more than 40 hours per week. Between 78.12% and 96.46% of non-specialist doctors, nurses, midwives and biomedical analysis technicians were required to work night shifts. Nurses, midwives, radiology and laboratory technicians were between 89.53% and 97.35%, organized in alternating work. In the sample, 55.20% complained about the insufficient number of work materials, 26.29% handled harmful chemical substances. Among those surveyed, 58.14% had been attacked. Conclusion: All professional categories of caregivers are subject to arduous work. Measures are needed to reverse the situation.

关键词： Hard Work Professionals Health North-Bénin

Two New Mega Dams Begin Operating as Hydropower Industry Booms

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering 2022年第11期18卷 9-11页

作者： Sean O’Neill senior Technology Writer

February 2022 saw the first official electricity produced by what will be,once fully operational,Africa’s largest hydropower dam,the Grand Ethiopian Renaissance Dam(GERD)(Fig.1)[1].It is just one of the latest milestones in an ongoing global boom in a hydropower dam industry pulled from the doldrums by the urgent need to produce climate-friendly energy for a global population with a growing demand for electricity[2].

关键词： Renaissance Grand Hydropower

Dynamics of glutamine synthetase expression in hepatic ischemiareperfusion injury: Implications for therapeutic interventions

在线全文

学校读者我要写书评

暂无评论

World Journal of Hepatology 2024年第8期16卷 1177-1184页

作者： Zhi-Hao Huang Meng-Qi Dong Feng-Yong Liu Wei-Jie Zhou State Key Laboratory of Organ Failure Research Department of General SurgeryGuangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal TumorNanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Department of Interventional Radiology Senior Department of OncologyFifth Medical Center of PLA General HospitalBeijing 100853China

BACKGROUND Hepatic ischemia-reperfusion injury(IRI)poses a great challenge in liver surgery and transplantation because of oxidative stress and inflammatory *** changes in glutamine synthetase(GS)expression during hepatic IRI remain *** To investigate the dynamic expression of GS during hepatic *** Following hepatic ischemia for 1 h and reperfusion,liver tissue samples were collected at 0.5,6,and 24 hours postreperfusion for fixation,embedding,*** and eosin staining and GS staining were *** GS expression rapidly decreases in hepatocytes around the central vein after IRI,reaching its lowest point at 6 hours postreperfusion,and then gradually *** GS is highly sensitive to IRI,highlighting its potential role as an indicator of liver injury states and a target for therapeutic intervention.

关键词： Hepatic ischemia-reperfusion Glutamine synthetase Central vein Liver Injury repair