Quantum mechanics and molecular dynamics are used to simulate guanidinium ionic liquids. Results show that the stronger interaction exists between guanidine cation and chlorine anion with interaction energy about 109....Quantum mechanics and molecular dynamics are used to simulate guanidinium ionic liquids. Results show that the stronger interaction exists between guanidine cation and chlorine anion with interaction energy about 109.216 kcal/mol. There are two types of spatial distribution for the title system： middle and top. Middle mode is a more stable conformation according to energy and geometric distribution. It is also verified by radial distribution function. The continuous increase of carbon dioxide （CO2） does not affect the structure of ionic liquids, but CO2 molecules are always captured by the cavity of ionic liquids.展开更多
Objective:To investigate the employment status,employment readiness,and other factors affecting the ease or difficulty with which breast cancer patients effect their return to work(RTW).Methods:This study adopted a mi...Objective:To investigate the employment status,employment readiness,and other factors affecting the ease or difficulty with which breast cancer patients effect their return to work(RTW).Methods:This study adopted a mixed-method design,recruiting participants from among breast cancer patients in a cancer hospital in Hunan from December 2018 to June 2019.We approached 300 individuals,192 of whom ultimately participated in this study.The quantitative part of the study involved several scales:the Patient Health Questionnaire-9(PHQ-9),the Brief Fatigue Inventory(BFI),the Work Ability Index(WAI),and the Lam Assessment of Employment Readiness(LASER).The qualitative part involved a set of open-ended questions and written responses collected from 41 participants who had already returned to work at the time of data collection.Their written responses mainly concerned factors influencing RTW.Results:Forty-one breast cancer patients had returned to work.The results reported a median total Cognitive Symptom Checklist score of 9.00(6.00,15.25),a median WAI score of 5.00(3.50,9.75),a median BFI score of 26.00(14.75,42.00),a median total PHQ-9 score of 8.00(5.25,17.00),and a LASER score of 50.35±11.90.Multiple regression analysis showed that the participants’cancer stage,cognitive limitations,depression,fatigue,and work ability were significant predictors of employment readiness(P<0.05).Exploring the qualitative data,we found that higher skill levels,better social support,and a flexible work schedule facilitated RTW;stress,lack of confidence in one’s work skills,depression,and fatigue are all possible barriers to RTW.Conclusion:The findings indicate that breast cancer patients have a low level of employment readiness.Nurses and other healthcare providers can develop relevant interventions to promote employment readiness and ultimately achieve RTW in this study population.展开更多
Objectives:This study aimed to identify barriers in performing physical assessments among nursing students through integrative review study.Methods:The literature were searched in Medline,CINAHL,ScienceDirect,Web of S...Objectives:This study aimed to identify barriers in performing physical assessments among nursing students through integrative review study.Methods:The literature were searched in Medline,CINAHL,ScienceDirect,Web of Science,ProQuest,and Taylor&Francis Online using the descriptors barrier,physical assessment,nursing student et al.Only English-language and peer-reviewed journal articles were included,and there were no year restrictions.Results:Twelve articles were selected for review.Two aspects were extracted:the barriers included personal challenges,challenges related to nursing education,challenges related to clinical practice;establishing competency-based education learning as a method to reduce physical assessment barriers.Student competencies and experiences were influenced by various factors that collectively hindered their successful performance of physical assessments.Conclusions:The review findings provide valuable insights into the complex issues involved in the performance of physical assessments and guidance for improvement in practice.A collaborative effort should be made to address the issues often faced by nursing students in performing routine physical assessments.Also,more constructive and competency-based teaching methods should be integrated into academic and clinical settings.展开更多
Investments in human capital （employees） include investments in the direct assurance of working abilities, investments in health and well-being, and investments in loyalty to the company. These investments are cruci...Investments in human capital （employees） include investments in the direct assurance of working abilities, investments in health and well-being, and investments in loyalty to the company. These investments are crucial for the long-term existence and development of a company, but their value is not disclosed on the assets side of the classical balance sheet. The most important argument of the mentioned approach＇s promoters is that the economic benefits stemming from such investments are uncertain. However, investments in human capital are those with the highest long-term benefits for the company. Therefore, human capital is the only element of the business process that can add value. Other elements （equipment, materials, and services） just transfer their value to products and services. In this paper, the elements of investments in human capital and the methods used to evaluate these investments are addressed. In addition, uniquely shaped financial performance ratios related to investments in human capital are presented along with the system of integrated ratios.展开更多
Discussed latest research results of basic theory research of coal spontaneous combustion in detail,with quantum chemical theory and method and experiment syste- matically studied chemical structure of coal molecule,a...Discussed latest research results of basic theory research of coal spontaneous combustion in detail,with quantum chemical theory and method and experiment syste- matically studied chemical structure of coal molecule,adsorption mechanism of coal sur- face to oxygen molecule and chemical reaction mechanism and process of spontaneous combustion of organic macromolecule and low molecular weight compound in coal from microcosmic view,and established complete theoretical system of the mechanism of coal spontaneous combustion.展开更多
Vocabulary knowledge is an important component of the writing skill and it has many dimensions, such as size, depth, and productive, in interaction with writing skill. To evaluate this relation and determine which dim...Vocabulary knowledge is an important component of the writing skill and it has many dimensions, such as size, depth, and productive, in interaction with writing skill. To evaluate this relation and determine which dimension is the most effective for second language writing quality, the present study was conducted. Turkish EFL （English as a Foreign Language） learners＇ lexical competence and writing abilities were examined through their vocabulary profiles and academic essays. The results of each vocabulary measure indicated that the participants had a limited vocabulary size, containing words mostly from 2,000 to 3,000 frequency bands and thus, the productive vocabulary knowledge of the participants mostly consisted of lk ＋ 2k words and the use of academic words in their essays was very low. The results of the study revealed that the lexical competence covering the main components of vocabulary knowledge was a good predictor of the students＇ quality of writing performance.展开更多
Recycling end-of-life tire rubber as asphalt modifier is known as a sustainable paving technology with merits including enhanced pavement durability,waste tire consumption and noise reduction.However,the criticisms on...Recycling end-of-life tire rubber as asphalt modifier is known as a sustainable paving technology with merits including enhanced pavement durability,waste tire consumption and noise reduction.However,the criticisms on the high construction emissions of asphalt rubber(AR)have limited its application.Warm mix asphalt(WMA)effectively reduces the mixing and compaction temperatures of conventional hot mix asphalt mixtures.The combination of AR and WMA,called warm asphalt rubber(WAR),is a promising paving material which achieves pavement sustainability from principles to practices.Many studies have demonstrated that WMA technologies work effectively with AR pavement in different ways,alleviating the concerns of potential higher emissions of AR by decreasing mixing and paving temperatures.A comprehensive literature review about WAR brings a better understanding of this promising paving technology.The findings of 165 publications were summarized in this review.It summarized the recent developments of WAR in various aspects,including rheological properties,mix design,mixture mechanical performance,field application,construction emission,and asphalt-rubber-WMA additive interaction.It is expected that this review is able to provide extensive information to explore further research development and application of WAR.展开更多
Among the many possible ways to assessing writing by giving feedbacks, the peer evaluation method is viewed as a relatively effective one for students. Traditional one-way teacher feedback with which the teachers usua...Among the many possible ways to assessing writing by giving feedbacks, the peer evaluation method is viewed as a relatively effective one for students. Traditional one-way teacher feedback with which the teachers usually make great efforts to mark out all errors had been proved to be unscientific. In this article, based on the specific situation in two English major classes in Wenhua Institute attached to HUST, a series of training and experiments were designed with the aim of proving the effect of peer evaluation in writing class. It is emphasized that language teachers should recognize the practical value of peer evaluation, and try to help students be involved in making peer responses in the writing process actively, so that students can get meaningful experience from evaluating their peers＇ writing, which, in turn, will enhance their own ability to produce more satisfactory essays.展开更多
A thermal model for a heat pipe with axially swallow-tailed microgrooves is developed and analyzed numerically to predict the heat transfer capacity and total thermal resistance.The effect of heat load on the axial di...A thermal model for a heat pipe with axially swallow-tailed microgrooves is developed and analyzed numerically to predict the heat transfer capacity and total thermal resistance.The effect of heat load on the axial distribution of capillary radius,and the effect of working temperature and wick structure on the maximum heat transfer capability,as well as the effect of the heat load and working temperature on the total thermal resistance are all investigated and discussed.It is indicated that the meniscus radius increases non-linearly and slowly at the evaporator and adiabatic section along the axial direction,while increasing drastically at the beginning of the condenser section.The pressure difference in the vapor phase along the axial direction is much smaller than that in the liquid phase.In addition,the heat transfer capacity is deeply affected by the working temperature and the size of the wick.A groove wick structure with a wider groove base width and higher groove depth can enhance the heat transfer capability.The effect of the working temperature on the total thermal resistance is insignificant;however,the total thermal resistance shows dependence upon the heat load.In addition,the accuracy of the model is also verified by the experiment in this paper.展开更多
For the development process in the rapidly growing economies, knowledge transfer and technology cooperation are becoming important issues. Research and technological competences are key indicators for the absorptive c...For the development process in the rapidly growing economies, knowledge transfer and technology cooperation are becoming important issues. Research and technological competences are key indicators for the absorptive capacity of sustainability technologies and for the ability to export them. These issues are analyzed empirically for Brazil, Russia, India, China and South Africa (BRICS). Sustainability related research in BRICS is mostly carried out within broader, more sector oriented programmes. Specialization patterns of international patents and in foreign trade indicate various strengths and weaknesses of the BRICS countries. The differences within the countries imply that the analysis must proceed at a technology specific level. China has considerable capabilities in technologies such as photovoltaics, solar thermal or buildings. There is a strong need for strategic positioning of the countries and for coordination of the various policy fields involved.展开更多
基金ACKNOWLEDGMENTS This work was supported by the Open Project Program of Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan University of Science and Technology, China （No.E21104）, the National Natural Science Foundation of China （No.21201062 and No.21172066）, and the International Cooperation Project （No.2013DFG60060）.
文摘Quantum mechanics and molecular dynamics are used to simulate guanidinium ionic liquids. Results show that the stronger interaction exists between guanidine cation and chlorine anion with interaction energy about 109.216 kcal/mol. There are two types of spatial distribution for the title system： middle and top. Middle mode is a more stable conformation according to energy and geometric distribution. It is also verified by radial distribution function. The continuous increase of carbon dioxide （CO2） does not affect the structure of ionic liquids, but CO2 molecules are always captured by the cavity of ionic liquids.
基金This research was funded by the National Natural Science Foundation of China(Grant#:72004039).
文摘Objective:To investigate the employment status,employment readiness,and other factors affecting the ease or difficulty with which breast cancer patients effect their return to work(RTW).Methods:This study adopted a mixed-method design,recruiting participants from among breast cancer patients in a cancer hospital in Hunan from December 2018 to June 2019.We approached 300 individuals,192 of whom ultimately participated in this study.The quantitative part of the study involved several scales:the Patient Health Questionnaire-9(PHQ-9),the Brief Fatigue Inventory(BFI),the Work Ability Index(WAI),and the Lam Assessment of Employment Readiness(LASER).The qualitative part involved a set of open-ended questions and written responses collected from 41 participants who had already returned to work at the time of data collection.Their written responses mainly concerned factors influencing RTW.Results:Forty-one breast cancer patients had returned to work.The results reported a median total Cognitive Symptom Checklist score of 9.00(6.00,15.25),a median WAI score of 5.00(3.50,9.75),a median BFI score of 26.00(14.75,42.00),a median total PHQ-9 score of 8.00(5.25,17.00),and a LASER score of 50.35±11.90.Multiple regression analysis showed that the participants’cancer stage,cognitive limitations,depression,fatigue,and work ability were significant predictors of employment readiness(P<0.05).Exploring the qualitative data,we found that higher skill levels,better social support,and a flexible work schedule facilitated RTW;stress,lack of confidence in one’s work skills,depression,and fatigue are all possible barriers to RTW.Conclusion:The findings indicate that breast cancer patients have a low level of employment readiness.Nurses and other healthcare providers can develop relevant interventions to promote employment readiness and ultimately achieve RTW in this study population.
基金The authors would like to thank Deanship of Scientific Research at Majmaah University,Kingdom of Saudi Arabia(Project number 1440-08)for supporting this work.
文摘Objectives:This study aimed to identify barriers in performing physical assessments among nursing students through integrative review study.Methods:The literature were searched in Medline,CINAHL,ScienceDirect,Web of Science,ProQuest,and Taylor&Francis Online using the descriptors barrier,physical assessment,nursing student et al.Only English-language and peer-reviewed journal articles were included,and there were no year restrictions.Results:Twelve articles were selected for review.Two aspects were extracted:the barriers included personal challenges,challenges related to nursing education,challenges related to clinical practice;establishing competency-based education learning as a method to reduce physical assessment barriers.Student competencies and experiences were influenced by various factors that collectively hindered their successful performance of physical assessments.Conclusions:The review findings provide valuable insights into the complex issues involved in the performance of physical assessments and guidance for improvement in practice.A collaborative effort should be made to address the issues often faced by nursing students in performing routine physical assessments.Also,more constructive and competency-based teaching methods should be integrated into academic and clinical settings.
文摘Investments in human capital （employees） include investments in the direct assurance of working abilities, investments in health and well-being, and investments in loyalty to the company. These investments are crucial for the long-term existence and development of a company, but their value is not disclosed on the assets side of the classical balance sheet. The most important argument of the mentioned approach＇s promoters is that the economic benefits stemming from such investments are uncertain. However, investments in human capital are those with the highest long-term benefits for the company. Therefore, human capital is the only element of the business process that can add value. Other elements （equipment, materials, and services） just transfer their value to products and services. In this paper, the elements of investments in human capital and the methods used to evaluate these investments are addressed. In addition, uniquely shaped financial performance ratios related to investments in human capital are presented along with the system of integrated ratios.
基金National Natural Science Foundation(50474010)Eleventh Five Year Key Technologies(2006BAK03B05)
文摘Discussed latest research results of basic theory research of coal spontaneous combustion in detail,with quantum chemical theory and method and experiment syste- matically studied chemical structure of coal molecule,adsorption mechanism of coal sur- face to oxygen molecule and chemical reaction mechanism and process of spontaneous combustion of organic macromolecule and low molecular weight compound in coal from microcosmic view,and established complete theoretical system of the mechanism of coal spontaneous combustion.
文摘Vocabulary knowledge is an important component of the writing skill and it has many dimensions, such as size, depth, and productive, in interaction with writing skill. To evaluate this relation and determine which dimension is the most effective for second language writing quality, the present study was conducted. Turkish EFL （English as a Foreign Language） learners＇ lexical competence and writing abilities were examined through their vocabulary profiles and academic essays. The results of each vocabulary measure indicated that the participants had a limited vocabulary size, containing words mostly from 2,000 to 3,000 frequency bands and thus, the productive vocabulary knowledge of the participants mostly consisted of lk ＋ 2k words and the use of academic words in their essays was very low. The results of the study revealed that the lexical competence covering the main components of vocabulary knowledge was a good predictor of the students＇ quality of writing performance.
基金Project(51808228)supported by the National Natural Science Foundation of ChinaProject(OE514/10-1)supported by the German Research Foundation。
文摘Recycling end-of-life tire rubber as asphalt modifier is known as a sustainable paving technology with merits including enhanced pavement durability,waste tire consumption and noise reduction.However,the criticisms on the high construction emissions of asphalt rubber(AR)have limited its application.Warm mix asphalt(WMA)effectively reduces the mixing and compaction temperatures of conventional hot mix asphalt mixtures.The combination of AR and WMA,called warm asphalt rubber(WAR),is a promising paving material which achieves pavement sustainability from principles to practices.Many studies have demonstrated that WMA technologies work effectively with AR pavement in different ways,alleviating the concerns of potential higher emissions of AR by decreasing mixing and paving temperatures.A comprehensive literature review about WAR brings a better understanding of this promising paving technology.The findings of 165 publications were summarized in this review.It summarized the recent developments of WAR in various aspects,including rheological properties,mix design,mixture mechanical performance,field application,construction emission,and asphalt-rubber-WMA additive interaction.It is expected that this review is able to provide extensive information to explore further research development and application of WAR.
文摘Among the many possible ways to assessing writing by giving feedbacks, the peer evaluation method is viewed as a relatively effective one for students. Traditional one-way teacher feedback with which the teachers usually make great efforts to mark out all errors had been proved to be unscientific. In this article, based on the specific situation in two English major classes in Wenhua Institute attached to HUST, a series of training and experiments were designed with the aim of proving the effect of peer evaluation in writing class. It is emphasized that language teachers should recognize the practical value of peer evaluation, and try to help students be involved in making peer responses in the writing process actively, so that students can get meaningful experience from evaluating their peers＇ writing, which, in turn, will enhance their own ability to produce more satisfactory essays.
基金Supported by the 11th Five Year National Science and Technology Support Key Project of China(2008BAJ12B02)
文摘A thermal model for a heat pipe with axially swallow-tailed microgrooves is developed and analyzed numerically to predict the heat transfer capacity and total thermal resistance.The effect of heat load on the axial distribution of capillary radius,and the effect of working temperature and wick structure on the maximum heat transfer capability,as well as the effect of the heat load and working temperature on the total thermal resistance are all investigated and discussed.It is indicated that the meniscus radius increases non-linearly and slowly at the evaporator and adiabatic section along the axial direction,while increasing drastically at the beginning of the condenser section.The pressure difference in the vapor phase along the axial direction is much smaller than that in the liquid phase.In addition,the heat transfer capacity is deeply affected by the working temperature and the size of the wick.A groove wick structure with a wider groove base width and higher groove depth can enhance the heat transfer capability.The effect of the working temperature on the total thermal resistance is insignificant;however,the total thermal resistance shows dependence upon the heat load.In addition,the accuracy of the model is also verified by the experiment in this paper.
文摘For the development process in the rapidly growing economies, knowledge transfer and technology cooperation are becoming important issues. Research and technological competences are key indicators for the absorptive capacity of sustainability technologies and for the ability to export them. These issues are analyzed empirically for Brazil, Russia, India, China and South Africa (BRICS). Sustainability related research in BRICS is mostly carried out within broader, more sector oriented programmes. Specialization patterns of international patents and in foreign trade indicate various strengths and weaknesses of the BRICS countries. The differences within the countries imply that the analysis must proceed at a technology specific level. China has considerable capabilities in technologies such as photovoltaics, solar thermal or buildings. There is a strong need for strategic positioning of the countries and for coordination of the various policy fields involved.
