检索结果-南通市图书馆

炭素技术 1990年第6期9卷 16-17页

作者： M.j.Spoon j.a.bennett 刘大为

引言多年来,石墨和针状焦生产厂家一直靠测量小挤压品热膨胀系数(CTE)的方法来确认针状焦的质量,这种挤压品用焦“粉”特殊加工而成,其最大粒度为0.425mm,而低于0.075mm占重量的45～65％,在最近几年中,由于针状焦质量的改善和热膨胀系... 详细信息

引言多年来,石墨和针状焦生产厂家一直靠测量小挤压品热膨胀系数(CTE)的方法来确认针状焦的质量,这种挤压品用焦“粉”特殊加工而成,其最大粒度为0.425mm,而低于0.075mm占重量的45～65％,在最近几年中,由于针状焦质量的改善和热膨胀系数的降低,这种标准粉子的热膨胀系数试验的灵敏程度不够了。依我们的经验,该试验似乎不再与大规格的工业电极热膨胀系数有密切关系。我们研究出一种新的热膨胀系数试验方法,该方法用直径3/4英寸标准挤压机,制品配方中包括粒度达6.7mm的粗颗粒。对这种粗颗粒制品所进行的CTE的测量结果与大规格电极有密切关系。并且这种新试验方法速度怏。

关键词：石油焦粗颗粒制品热膨胀系数

维普期刊数据库

Effects of a school-based karate intervention on academic achievement,psychosocial functioning,and physical fitness:A multi-country cluster randomized controlled trial

在线全文

学校读者我要写书评

暂无评论

journal of Sport and Health Science 2024年第1期13卷 90-98页

作者： Tania Pinto-Escalona Erica Gobbi Pedro L.Valenzuela Simon j.bennett Pierluigi Aschieri Manuel Martin-Loeches Antonio Paoli Oscar Martinez-de-Quel Faculty of Education Complutense University of MadridMadrid 28040Spain Department of Biomolecular Sciences University of Urbino“Carlo Bo”Urbino 61029Italy Department of Systems Biology University of AlcaláMadrid 28805Spain Research Institute for Sport and Exercise Sciences Faculty of ScienceLiverpool John Moores UniversityLiverpoolL33AFUK Italian judo WrestlingKarate and Martial Arts FederationRome 00122Italy Psychobiology&Methods for the Behavioural Sciences Department Complutense University of MadridMadrid 28040Spain Department of Biomedical Sciences University of PaduaPadua 35122Italy

Purpose:To examine the effects of a school-based karate intervention on academic achievement,psychosocial functioning,and physical fitness in children aged 7-8 ***:Twenty schools in 5 different European countries(2 second-grade classrooms per school)participated in a cluster randomized controlled trial(Sport at School trial).Participants were assigned to either a control group,which continued with their habitual physical education lessons,or to an intervention group,which replaced these lessons with a 1-year karate intervention(Karate Mind and Movement program).A total of 721 children(344 girls and 377 boys,7.4±0.5 years old,mean±SD)completed the study,of which 333 and 388 were assigned to the control group and intervention group,*** included academic performance(average grade),psychosocial functioning(Strengths and Difficulties Questionnaire for parents),and different markers of physical fitness(cardiorespiratory fitness,balance,and flexibility).Results:The intervention provided small but significant benefits compared to the control group for academic achievement(d=0.16;p=0.003),conduct problems(d=-0.28;p=0.003),cardiorespiratory fitness(d=0.36;p0.05).Conclusion:A 1-year school-based karate intervention was effective in improving academic achievement,conduct problems,and physical fitness in primary school *** results support the inclusion of karate during physical education lessons.

关键词： Academic performance Cardiorespiratory fitness Conduct problems Karate Physical fitness

维普期刊数据库

Embracing the Year of the Dragon

在线全文

学校读者我要写书评

暂无评论

China Today 2024年第2期73卷 30-32页

作者： KEITH bennett Friends of Socialist China based in London

The Lunar New Year has increasingly become a common festival of people throughout the *** people,and people throughout the world,are looking forward to welcoming the Year of the Dragon,which falls on February 10,*** Dragon is considered the most auspicious of the 12 signs in the Chinese zodiac and this year is specifically the Year of the Wood Dragon,the first since *** to Lifestyle Asia,“Wood Dragons enjoy fulfilling ***’re likely to materialize all their ambitions into actions,coming up with truly revolutionary ideas.”

关键词： looking has likely

A multi-mechanistic approach to the oil recovery study of a family of amphiphilic polysaccharides

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Research 2024年第2期9卷 238-249页

作者： Funsho Afolabi Syed MMahmood Lunech Mario Nur Asyraf Md Akhir bennett Tackie-Otoo Hamid Sharifigaliuk Center of Research in Enhanced Oil Recovery Universiti Teknologi PETRONASSeri IskandarMalaysia Center for Subsurface Imaging Universiti Teknologi PETRONASSeri IskandarMalaysia Research Institute of Petroleum Industry(RIPI) TehranIran

Chemical enhanced oil recovery(cEOR)remains one of the most potent tertiary recovery ***,it is expensive and rarely environmentally ***-based amphiphilic polymers have been suggested as an alternative to eradicating the challenges of conventional cEOR because of cost-effectiveness,and ***,few in-depth studies exist in the literature to investigate the prospects of these materials.A new family of amphiphilic polysaccharides was synthesized by hydrophobic modification of cellulose sulphate,and the EOR functionalities were *** novel biopolymers exhibited the ability to alter rock wetting *** terms of recovery,one of the variants of the synthesized bio amphiphilic polymer(D-I)was able to reduce residual oil saturation to 12%at harsh conditions of 60,000 ppm salinity at 75℃.Micromodel visual analysis revealed that the performance of the novel materials was due to the combination of mobility control,IFT lowering and emulsification,wettability alteration,and *** a performance commensurate to that of a commercial hydrophobically modified polymer,it can be said that the novel amphiphilic polysaccharides can stand as a viable cEOR agent for oilfield applications.

关键词： Bio-based polymers Amphiphilic polysaccharides EOR Cellulose sulphate Environmental sustainability

Five Principles as Relevant Today as 70 Years Ago

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Today 2024年第8期73卷 18-19页

作者： KEITH bennett 不详

The Chinese initiative has become an international consensus with productive actions.A conference marking the 70th anniversary of the Five Principles of Peaceful Coexistence,a cornerstone of Chinese foreign policy,was held in Beijing on june 28,attracting attendees from around the world,including former political leaders from some 20 *** the conference,President Xi jinping made an important speech in which he said that the Five Principles“marked a groundbreaking and epoch-making achievement in the history of international relations.”

关键词： corners attracting Peace

Sexual and Reproductive Service Interventions for Menstrual Regulation, Safe Abortion, and Post-abortion Care and Their Effectiveness During Disaster Response: A Global Systematic Review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International journal of Disaster Risk Science 2024年第3期15卷 359-373页

作者： Nibedita S.Ray-bennett Winifred Ekezie Isha Biswas Nimra Iqbal Choudhary David Cowie Lasith Dissanayake Lauren Macleod Azukaeogo Nnaji Madhulika Sahoo School of Business University of Leicester Avoidable Deaths Network University of Leicester Diabetes Research Centre Leicester General Hospital University of Leicester School of Social Sciences and Humanities Aston University Lifespan and Population Health School of Medicine University of Nottingham School of Public Health and Interdisciplinary Studies Auckland University of Technology Faculty of Life Sciences and Education University of South Wales West African Regional ECHO (WARE) APIN Public Health Initiatives Department of Anthropology Kalahandi University

Sexual and reproductive health(SRH) services are crucial for women especially during disasters, to reduce maternal mortality and morbidity from miscarriages, unsafe abortions, and post-abortion complications. This study explored the SRH interventions provided during disaster response. A systematic review was conducted to identify what menstrual regulation(MR), safe abortion(SA), and post-abortion care(PAC) approaches/interventions exist to promote resilience in the health system in disaster settings; what intervention components were most eff ective; and challenges and opportunities to meeting SRH rights. Five electronic databases were searched, resulting in 4194 records. Following the screening process, seven publications were included. The intervention-related information in each publication was assessed based on availability,accessibility, acceptability, and quality. Two SRH approaches/interventions were found. The eff ectiveness of intervention components could not be conducted due to the limited number of relevant studies. Challenges were found at facility and community levels, and opportunities included overcoming them, making MR, SA, and PAC integral to the mitigation phase,and policy change to overcome barriers related to unaff ordability and inaccessibility. Recommendations are provided to encourage research and policy towards improving neglected SRH in disaster settings to realize Sustainable Development Goal 3 and the Global Strategy and Sendai Framework's priority to promote disaster-resilient health systems.

关键词： Abortion Disasters Sendai framework Sexual and reproductive health Sustainable development goal

The Impact of Opioid Drugs on Memory and Other Cognitive Functions: A Review

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

journal of Biosciences and Medicines 2024年第4期12卷 264-287页

作者： Mason T. bennett Yuliya Modna Dev Kumar Shah School of Biomedical Sciences Trinity Medical Sciences University Kingstown Saint Vincent and Grenadines Department of Physiology Trinity Medical Sciences University Kingstown Saint Vincent and Grenadines

Background and Purpose: Opioids, used for centuries to alleviate pain, have become a double-edged sword. While effective, they come with a host of adverse effects, including memory and cognition impairment. This review delves into the impact of opioid drugs on cognitive functions, explores underlying mechanisms, and investigates their prevalence in both medical care and illicit drug use. The ultimate goal is to find ways to mitigate their potential harm and address the ongoing opioid crisis. Methods: We sourced data from PubMed and Google Scholar, employing search combinations like “opioids,” “memory,” “cognition,” “amnesia,” “cognitive function,” “executive function,” and “inhibition.” Our focus was on English-language articles spanning from the inception of these databases up to the present. Results: The literature consistently reveals that opioid use, particularly at high doses, adversely affects memory and other cognitive functions. Longer deliberation times, impaired decision-making, impulsivity, and behavioral disorders are common consequences. Chronic high-dose opioid use is associated with conditions such as amnesiac syndrome (OAS), post-operative cognitive dysfunction (POCD), neonatal abstinence syndrome (NAS), depression, anxiety, sedation, and addiction. Alarming trends show increased opioid use over recent decades, amplifying the risk of these outcomes. Conclusion: Opioids cast a shadow over memory and cognitive function. These effects range from amnesiac effects, lessened cognitive function, depression, and more. Contributing factors include over-prescription, misuse, misinformation, and prohibition policies. Focusing on correct informational campaigns, removing punitive policies, and focusing on harm reduction strategies have been shown to lessen the abuse and use of opioids and thus helping to mitigate the adverse effects of these drugs. Further research into the impacts of opioids on cognitive abilities is also needed as they are well demonstrated in

关键词： Opioids Memory Cognition Pain

Storing Freshwater Versus Storing Electricity in Power Systems with High Freshwater Electric Demand

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

journal of Modern Power Systems and Clean Energy 2024年第2期12卷 323-333页

作者： Mubarak j.Al-Mubarak Antonio j.Conejo Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOHUSA Department of Electrical Engineering Kuwait UniversityP.O.Box 5969Safat 13060Kuwait Department of Integrated Systems Engineering and the Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOH 43210USA IEEE

We consider a power system whose electric demand pertaining to freshwater production is high(high freshwater electric demand),as in the Middle East,and investigate the tradeoff of storing freshwater in tanks versus storing electricity in batteries at the day-ahead operation *** storing freshwater and storing electricity increase the actual electric demand at valley hours and decrease it at peak hours,which is generally beneficial in term of cost and ***,to what extent?We analyze this question considering three power systems with different generation-mix configurations,i.e.,a thermal-dominated mix,a renewable-dominated one,and a fully renewable *** generation-mix configurations are inspired by how power systems may evolve in different countries in the Middle *** production uncertainty is compactly modeled using chance *** draw conclusions on how both storage facilities(freshwater and electricity)complement each other to render an optimal operation of the power system.

关键词： Power system operation freshwater production and transportation coordination day-ahead scheduling

维普期刊数据库

Analysis of ancient mass extinction recoveries in marine environments: generating strategies for managing outcomes of the current mass extinction

在线全文

学校读者我要写书评

暂无评论

National Science Review 2024年第1期11卷 8-10页

作者： David j.Bottjer Department of Earth Sciences University of Southern California

The defining feature of a mass extinction and its associated recovery is the global amount of extinction that occurred[1]. However, there is finer-scale detail to the story, as seen in the ongoing modern mass extinction(the sixth mass extinction), which exhibits variable effects among marine ecosystems and environments, and hence geographic areas [1].

关键词：