More Than Just a Student Voice: Facilitating Student Leadership Development Through the Library Student Liaison Program

This article explores how the library-student liaison program at Eastern Washington University (EWU) Libraries has evolved into an opportunity for students to develop leadership skills. Originally designed to foster better communication between the EWU Libraries and students enrolled at the university, we recognized that the process of achieving established goals for the program provided a vehicle for students' leadership-skill development. To facilitate the leadership process, librarians employed the Social Change Model. Designed specifically for college students, this model engages the student to develop individual capacities to strengthen group activities that foster positive changes in the community and society.     

电子健康网站用户信息披露行为影响因素研究

[目的/意义]旨在确定信息披露行为影响因素,优化电子健康网站生态环境,间接助力"健康中国2030"战略目标的实现。[方法/过程]采用质性研究方法,对访谈资料进行三级编码,抽取影响电子健康网站用户信息披露的17个主范畴及5个核心范畴,并构建电子健康网站用户信息披露行为影响因素模型。[结果/结论]电子健康网站用户信息披露行为主要受到用户感知效用、感知风险、主观规范、服务质量和病情特征影响。其中,感知效用是最重要影响因素,感知风险是次重要影响因素,主观规范是较重要影响因素,服务质量和病情特征是相对不重要影响因素。据此,从政府部门、电子健康网站和用户3个维度,总结相关启示。     

Why Users Share the News: A Theory of Reasoned Action-Based Study on the Antecedents of News-Sharing Behavior

Social media have become an integral part of online news use, affecting how individuals find, consume, and share news. By applying the Theory of Reasoned Action (TRA), this study investigates the effects of motives, attitude, and intention on news-sharing behavior among German social media users (n = 333). Findings show that news-sharing attitude and subjective norms have a positive effect on news-sharing intention, which in turn has a positive effect on actual news-sharing behavior. Taken together, we see that a new media behavior in the early phases of its societal diffusion—like social media news sharing in Germany in 2015—can mainly be explained by a rational choice logic and is rooted in the motives of socializing and information seeking. This finding thus reflects the double nature of social media as a means for both information retrieval and social grooming.     

Managing a Biomedical Library’s Instruction Program: Redefining Scope

The National Institutes of Health (NIH) library instruction program provides training services to staff, clinicians, and researchers across NIH and several Department of Health and Human Services (HHS) operating divisions. The audience, training needs, and training topics are diverse and constantly changing. The NIH library has developed several new services and class topics to meet the needs of its NIH and HHS communities. Context, strategies, and future directions for the NIH library instruction program are described.     

Health science libraries in Sweden: new directions,expanding roles

Librarians in Sweden are facing huge challenges in meeting the demands of their organisations and users. This article looks at four key areas: coping with open science/open access initiatives; increasing demands from researchers for support doing systematic reviews; understanding user experiences in Swedish health science libraries; and the consequences of expanding roles for recruitment and continuing professional development. With regard to changing roles, there is an increasing shift from the generalist towards the expert role. The authors raise the issue as to how to prepare those new to the profession to the changing environment of health science libraries.     

Development of a chemically defined medium for Planctopirus limnophila to increase biomass production

BackgroundPlanctomycetes is a phylum of biofilm-forming bacteria with numerous biosynthetic gene clusters, offering a promising source of new bioactive secondary metabolites. However, the current generation of chemically defined media achieves only low biomass yields, hindering research on these species. We therefore developed a chemically defined medium for the model organism Planctopirus limnophila to increase biomass production.ResultsWe found that P. limnophila grows best with a 10 mM sodium phosphate buffer. The replacement of complex nitrogen sources with defined amino acid solutions did not inhibit growth. Screening for vitamin requirements revealed that only cyanocobalamin (B12) is needed for growth. We used response surface methodology to optimize the medium, resulting in concentrations of 10 g/L glucose, 34 mL/L Hutner’s basal salts, 23.18 mM KNO₃, 2.318 mM NH₄Cl and 0.02 mg/L cyanocobalamin. The analysis of amino acid consumption allowed us to develop a customized amino acid solution lacking six of the amino acids present in Aminoplasmal 10%. Fed-batch cultivation in a bioreactor using the optimized medium achieved a final ΔOD₆₀₀ of 46.8 ± 0.5 after 108 h, corresponding to a cell dry weight of 13.6 ± 0.7 g/L.ConclusionsThe optimized chemically defined medium allowed us to produce larger amounts of biomass more quickly than reported in earlier studies. Further research should focus on triggering P. limnophila biofilm formation to activate the gene clusters responsible for secondary metabolism.How to cite: Kruppa OC, Gerlach D, Fan R, et al. Development of a chemically defined medium for Planctopirus limnophila to increase biomass production. Electron J Biotechnol 2021;54. https://doi.org/10.1016/j.ejbt.2021.09.002.     

高速PCB中过孔引起的同步开关噪声抑制研究

高速PCB中，由于过孔数量较多导致信号产生严重畸变．文章首先分析了过孔对高速信号质量的影响，然后通过在过孔周围添加去耦电容器来抑制同步开关噪声（SSN）．结果表明，在过孔周围添加去耦电容器可以有效地减小同步开关噪声，使得信号波动峰值减小，提高了信号质量．     

谈高职院校计算机专业毕业论文（设计）的改革

当前,我国高校毕业论文（设计）存在抄袭、拼凑成风的不良现象,结合高职院校计算机专业毕业论文指导工作的现实情况,有针对性地提出了基于工作过程的改革方法,在实践中让学生自主选题,形式上不拘一格,并且规范写作与指导流程,使得毕业论文（设计）真正地为学生服务。     

澳大利亚国家图书馆展览政策研究

[目的/意义]国内图书馆对展览政策的研究较少，而国外图书馆在相关领域有比较成熟的做法。研究国外图书馆展览政策有助于促进国内图书馆展览工作的开展。[方法/过程]通过对澳大利亚国家图书馆展览政策与展品租借政策文本的梳理与研究，探索其有益做法对我国图书馆的启示。[结果/结论]我国图书馆应从4方面完善展览工作：①重视展览工作的组织建设；②重视对展览原则的研究；③结合国家文物保护政策制定展品借出政策；④结合我国实际制定展品借入政策。     

Physical activity and nutrition guidelines to help with the fight against COVID-19

ABSTRACT

As the world is witnessing the epidemic of coronavirus disease 2019, emerging genetics and clinical pieces of evidence suggest a similar immunopathology to those of severe acute respiratory syndrome and Middle East respiratory syndrome. Staying at home to prevent the spread of the virus and consequently being largely inactive is associated with unintended consequences. These can actually enhance the infection risk and exacerbate poor health conditions including impaired immune function. Physical activity is a feasible way of improving health, particularly physical and mental health in a time of social isolation. However, people with certain health conditions in these circumstances may need a special physical activity programme in addition to any exercise they may already be performing via online programmes. This review aims to provide practical guidelines during the COVID-19 quarantine period. We suggest performing aerobic, resistance training, respiratory muscle training and yoga in the healthy, and in those with upper respiratory tract illness, patients with lower respiratory tract illness should be restricted to respiratory muscle training and yoga. In addition, vitamins D and C, omega-3 fatty acids, and regular consumption of fruit and vegetables might be considered as nutritional aids to support the immune system in those affected by COVID-19.