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factors Influencing Student Nurses’ Willingness to Care for Mentally Ill Patients with Highly Infectious Diseases in Nigeria: A Cross-Sectional Study

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Journal of Biomedical Science and Engineering 2022年第8期15卷 207-218页

作者： Chinwe f. S. Ezeruigbo Department of Nursing Ebonyi State University Abakaliki Nigeria

Background: Individuals experiencing mental illness and diagnosed with highly infectious diseases (HID) are doubly stigmatized. Identifying the factors influencing student’s willingness to care for this special population is essential not only to inform stigma reduction strategies but also to provide useful information towards building a critical mass of future compassionate caregivers with ultimate goal of improving the quality of nursing care for mentally ill persons. Methodology: A cross-sectional descriptive research design was utilized to examine 200 participants from a training institution in Ebonyi state. Data was collected using validated author constructed instrument. Descriptive and inferential statistics were utilized to analyze data. Result: Multiple logistic regression analysis revealed that the variables were statistically significant at χ2(4) = 23.133, p factors (gender, marital status, incentives, and family type) influence student nurses’ willingness to work with mentally ill patients who have highly infectious diseases. Conclusion: The findings of this study suggest that appropriate institutional policies, additional training, and incentives should be adopted to boost student motivation.

关键词： Nursing Care Mental Illness Student Nurses Willingness Infectious Diseases

Health Workers’ Preparedness towards Integrating Mental Healthcare into Primary Health Settings: Evidence from Nigeria

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International Journal of Clinical Medicine 2022年第8期13卷 379-390页

作者： Chinwe f. S. Ezeruigbo Department of Nursing Ebonyi State University Abakaliki Nigeria

Background: The global drive to scale up mental health services and eliminate the treatment gap requires incorporating mental health services into primary health care (PHC). Primary health care provides comprehensive, continuous, and coordinated care and if need be provides referrals to higher levels of care. However, for these services to meet the basic objective of PHC, it is necessary to determine healthcare workers’ preparedness for caring for the mentally ill. Therefore, this study aimed to examine health workers’ preparedness for integrating mental healthcare into primary settings in a rural community in Nigeria. Methodology: A descriptive research design was used to conduct the study among all 215 primary healthcare workers within Nkanu West Local Government Area (LGA). The instrument for data collection was a structured questionnaire constructed by the author. A pilot study was conducted on 10% of the sample population. Cronbach’s Alpha formula was used to estimate the reliability coefficient (0.85). The collected data were analysed with descriptive statistical frequencies and percentages. Results: Data were analyzed using the Statistical Package for Social Sciences (SPSS) version 20. findings show that healthcare workers’ preparedness to care for the mentally ill at the primary healthcare centre is quite low. It was also found that mental illness is still shredded by stigma as a result of poor awareness. Consequently, there is still a persistent pervasive belief system that Mental illness is a form of retribution from the gods for one’s wrong deed in the study area. Conclusion: It was concluded that few of the respondents were prepared for the care of the mentally ill which might be a result of poor awareness about mental health and the negative stereotype given about mental health. from the analysis, it can be deduced that health workers exhibit some degree of positive attitude towards care of the mentally ill, though, mental illness is associated with sti

关键词： Mental Health Primary Healthcare Health Workers Stigma

基于真实微观组织的双相钢力学行为多尺度模拟

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塑性工程学报 2016年第5期23卷 107-113页

作者：张志建 Asgari S A Rolfe B f 江苏省(沙钢)钢铁研究院张家港215625 Institute for frontier Materials Deakin University

以两种不同化学成分和马氏体含量的双相钢为研究对象,对其显微组织进行了有限元建模。选取一部分显微组织作为代表性单元RVE来反映宏观材料特性,考虑合金成分和铁素体晶粒尺寸的影响,采用基于位错强化理论的Bailey-Hirsch模型描述铁素... 详细信息

以两种不同化学成分和马氏体含量的双相钢为研究对象,对其显微组织进行了有限元建模。选取一部分显微组织作为代表性单元RVE来反映宏观材料特性,考虑合金成分和铁素体晶粒尺寸的影响,采用基于位错强化理论的Bailey-Hirsch模型描述铁素体和马氏体单相的流变行为,在ABAQUS中模拟了RVE的单向拉伸过程。结果表明,多尺度模型可以较好的预测宏观力学性能,并能合理的反映双相钢变形过程微观尺度的应力应变行为。

关键词：多尺度代表性体积单元有限元双相钢单向拉伸

Contribution to Improving the Management of Sewage Sludge in the Western Region: Case of Bafoussam 1st

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Journal of Geoscience and Environment Protection 2022年第3期10卷 111-119页

作者： félicite Obono Mba Ngongang Sanou Department of Environmental Sciences National Advanced School of Engineering The University of Maroua Maroua Cameroon

Sanitation is a particularly sensitive issue in the world, especially in Africa where local communities are plagued by the problem of managing sludge which is causing a lot of damage in Africa and mainly in Cameroon. This study aims to contribute to improving the management of sewage sludge in the municipality of Bafoussam 1st. for this study, the methodology used is field survey. The questionnaire was submitted to 120 households in the commune of Bafoussam 1st, in particular, we take into account knowledge of the health and environmental risks that can result from improper handling of sludge and its treatment. The results show that the most widespread sanitation system is traditional latrines. Similarly, 79.19% of those surveyed dump, the sludge collected at the landfill against only 14.28% who dump it in fields and 6.53% have no idea about the fate of the sludge from their sanitary facilities. It should also be noted that 55.83% of the people surveyed are not aware of the health and environmental risks of untreated sewage sludge and therefore do not take the precautions to avoid it. Subsequently, 93.75% of respondents say that the current landfill would be a nuisance and the main nuisances identified are water pollution and subsequent fish poisoning. Physico-chemical analyzes of the sludge revealed values much higher than the values provided for by the WHO standards. Thus, total nitrogen and phosphate ions represented respectively 97 mg/L and 47 mg/L against 35 and 30.4 mg/L for the standard;COD and BOD5 represented respectively 3250 mg/L and 1100 mg/L against 150 and 40 mg/L provided by the WHO standards. It follows the temperature and the MES which gave values of 32.7°C and 1750 mg/L, values much higher than the standard (30°C and 50 mg/L).

关键词： Sewage Sludge Management Treatment Sanitation Bafoussam 1st

Embedding hollow Co3O4 nanoboxes into a three- dimensional macroporous graphene framework for high-performance energy storage devices

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Nano Research 2018年第5期11卷 2836-2846页

作者： Mengping Li Maher f. EI-Kady Jee Y. Hwang Matthew D. Kowal Kristofer Marsh Haosen Wang Zhijuan Zhao Richard B. Kaner Department of Chemistry and Biochemistry and California NanoSystems Institute University of California Los Angeles Los Angeles CA 90095 USA Department of Chemistry Faculty of Science Cairo University Giza 12613 Egypt Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095 USA

Carbon materials are widely used for supercapacitor applications thanks to their high surface area, good rate capability, and excellent cycling stability. However, the development of high energy density carbon supercapacitors still remains a challenge. In this work, hollow Co3O4 nanoboxes have been embedded into three-dimensional macroporous laser-scribed graphene （LSG） to produce composite electrodes with improved electrochemical performance. Here, Co3O4 provides high capacity through fast and reversible redox reactions, while LSG serves as a conductive network to maintain high power. The open nanobox morphology is a unique solution for extracting the maximum capacity from Co3O4, resulting in electrodes whose surfaces, both internal and external, are accessible to the electrolyte. The electrochemical performance of the composite material is promising with a volumetric capacity of 60.0 C/cm^3 and a specific capacity of 542.3 C/g, corresponding to 682.0 C/g of the constituent Co3O4. With a low equivalent series resistance of 0.9 Ω, the Co3O4/LSG electrode is able to maintain 113.1% of its original capacity after 10,000 cycles. This work provides new insights into the design of high-performance carbon/metal oxide nano- composites for next-generation energy storage devices.

关键词： supercapacitor graphene cobalt oxide laser composite hybrid capacitor

Coating independent cytotoxicity of citrate-and PEG-coated silver nanoparticles on a human hepatoma cell line

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Journal of Environmental Sciences 2017年第1期29卷 191-201页

作者： Veronica Bastos Jose M.P.ferreira-de-Oliveira Joana Carrola Ana L.Daniel-da-Silva Iola f.Duarte Conceicao Santos Helena Oliveira CESAM&Laboratory of Biotechnology and Cytomics Department of BiologyUniversity of Aveiro3810-193 AveiroPortugal CICECO-Aveiro Institute of Materials Department of ChemistryUniversity of Aveiro3810-193 AveiroPortugal Department of Biology Faculty of SciencesUniversity of Porto4169-007 PortoPortugal

The antibacterial potential of silver nanoparticles（AgNPs） resulted in their increasing incorporation into consumer,industrial and biomedical ***,human and environmental exposure to AgNPs（either as an engineered product or a contaminant）supports the emergent research on the features conferring them different toxicity *** this study,30 ran AgNPs coated with citrate or poly（ethylene glycol）（PEG） were used to assess the influence of coating on the effects produced on a human hepatoma cell line（HepG2）,namely in terms of viability,apoptosis,apoptotic related genes,cell cycle and cyclins gene *** types of coated AgNPs decreased cell proliferation and viability with a similar toxicity *** the concentrations used（11 and 5 μg/mL corresponding to IC50 and-IC10 levels,respectively） the amount of cells undergoing apoptosis was not significant and the apoptotic related genes BCL2（anti-apoptotic gene）and BAX（pro-apoptotic gene） were both ***,both AgNPs affected HepG2 cell cycle progression at the higher concentration（11 μg/mL） by increasing the percentage of cells in S（synthesis phase） and G2（Gap 2 phase） *** the cell-cycle related genes,the expression of cyclin B1 and cyclin E1 genes were ***,this work has shown that citrate- and PEG-coated AgNPs impact on HepG2 apoptotic gene expression,cell cycle dynamics and cyclin regulation in a similar *** research is needed to determine the properties that confer AgNPs at lower toxicity,since their use has proved helpful in several industrial and biomedical contexts.

关键词： Silver nanoparticles(AgNPs) Citrate Polyethylene glycol)(PEG) HepG2 cells Cytotoxicity Nanotoxicology

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Cu-ETP等温压缩系数原位实验测量研究

真空与低温 2023年第4期29卷 373-378页

作者：杨添通宋耀楠孔祥杰张海洋高波 PITRE laurent 中国科学院理化技术研究所中法低温计量科学与技术国际联合实验室北京100190 中国科学院理化技术研究所中国科学院低温工程学重点实验室北京100190 中国科学院大学北京100049 法国国家计量院-法国国立科学技术与管理学院法国拉普莱纳-圣德尼F93210

电解精炼韧铜(Cu-ETP)通常用于制作基准级温度计中的核心部件微波谐振腔,其等温压缩系数对高准确度的热力学温度测量至关重要。但由于缺乏Cu-ETP在低温下的相关物性数据,常用高导无氧铜(OfHC)的等温压缩系数来近似Cu-ETP的等温压缩系数... 详细信息

电解精炼韧铜(Cu-ETP)通常用于制作基准级温度计中的核心部件微波谐振腔,其等温压缩系数对高准确度的热力学温度测量至关重要。但由于缺乏Cu-ETP在低温下的相关物性数据,常用高导无氧铜(OfHC)的等温压缩系数来近似Cu-ETP的等温压缩系数。为了获得Cu-ETP等温压缩系数的原位实验测量结果,在定压气体折射率基准级温度计实验系统的基础上,采用多模式微波谐振法测得了氖三相点(24.5561 K)处Cu-ETP的等温压缩系数,并计算了其不确定度。最终结果与通过间接计算得到的同温度下OfHC等温压缩系数之间具有较好的一致性且不确定度水平相当。参考氖三相点处Cu-ETP等温压缩系数的测量结果,获得了5~24 K温区内Cu-ETP等温压缩系数外推值。极低温区Cu-ETP等温压缩系数原位测量结果和外推计算结果可为热力学温度测量、气体基本热物性测量等提供参考数据。

关键词：基准级温度计 Cu-ETP 等温压缩系数准球形谐振腔

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碳化氨水中含碳量的分析及测量

清华大学学报（自然科学版） 2011年第4期51卷 488-492,498页

作者：秦锋王淑娟 Hallvard f.Svendsen 陈昌和清华大学热能工程系热科学与动力工程教育部重点实验室中国北京100084 挪威科技大学化学工程系挪威特隆赫姆7491

近年来氨法吸收二氧化碳成为化学吸收方法捕集二氧化碳研究方面的热点,碳化氨水中含碳离子的测定至今仍然是一个难点。该文使用0.1 mol/L的H2SO4溶液和Metrohm 809 Titrando滴定仪,经过对多个碳化氨水溶液样品的滴定测量,并且结合质量... 详细信息

近年来氨法吸收二氧化碳成为化学吸收方法捕集二氧化碳研究方面的热点,碳化氨水中含碳离子的测定至今仍然是一个难点。该文使用0.1 mol/L的H2SO4溶液和Metrohm 809 Titrando滴定仪,经过对多个碳化氨水溶液样品的滴定测量,并且结合质量守恒法和BaCl2沉淀法进行比较,发展和确认了能够测量出碳化氨水溶液中含氨量和含碳量的滴定方法。对滴定过程进行了深入的分析,认为美国能源实验室(NETL)发展的NH3、CO32-、HCO3-测量方法存在问题。滴定方法相对于Raman光谱和NMR方法的缺点是无法区分含碳离子形态,但优点是能够快速准确地测定碳化氨水中的含氨量和含碳量。

关键词：碳化氨水二氧化碳吸收滴定总含碳量氨含量

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压力对橄榄石流变性的影响

岩石学报 2003年第3期19卷 577-582页

作者：赵永红王中言 David f BRUHN David L KOHLSTEDT 北京大学地球物理学系北京100871 美国明尼苏达大学化学工程与材料科学系美国明尼苏达大学地质与地球物理系

本文给出细粒橄榄石集合体在位错蠕变域中压力效应的实验结果。对干燥、人工合成的橄榄石集合体进行了三轴压缩实验,试验在一台高分辨率的气体介质试验机上进行。典型的常载荷蠕变试验温度为1473K或1523K,围压为400MPa、200MPa、400MPa... 详细信息

本文给出细粒橄榄石集合体在位错蠕变域中压力效应的实验结果。对干燥、人工合成的橄榄石集合体进行了三轴压缩实验,试验在一台高分辨率的气体介质试验机上进行。典型的常载荷蠕变试验温度为1473K或1523K,围压为400MPa、200MPa、400MPa、200MPa。当差压力和温度给定时,试件在400MPa围压下,变形速度较200MPa围压下要慢。实验得出的细粒橄榄石集合体在位错蠕变域中的活化体积值为(23±3)×10^(-6)m^3/mol。最后,对实验结果在地幔动力学中的应用进行了讨论。

关键词：橄榄石集合体活化体积位错蠕变压力效应实验研究