The subjective well-being of the elderly is an integral part of healthy aging.This review introduces the concept of subjective well-being of the elderly and the evaluation tools used,reviews the influencing factors of...The subjective well-being of the elderly is an integral part of healthy aging.This review introduces the concept of subjective well-being of the elderly and the evaluation tools used,reviews the influencing factors of subjective well-being of the elderly,and summarizes the intervention measures of subjective well-being of the elderly.From the perspective of positive psychology,based on the introduction of the concept and evaluation tools of temperament optimism,this paper reviews the research status of temperament optimism and subjective well-being and the research progress of their correlation,so as to provide a theoretical basis for the intervention to improve the subjective well-being of the elderly.展开更多
The development of adaptive emotion regulation(ER)plays a pivotal role in adolescent mental health and socio-emotional adaptation.Dispositional optimism,as an important protective factor for adolescent adjustment,may ...The development of adaptive emotion regulation(ER)plays a pivotal role in adolescent mental health and socio-emotional adaptation.Dispositional optimism,as an important protective factor for adolescent adjustment,may affect adolescent ER and subsequently influence adaptive outcomes.In this review,the changes and challenges,the role of ER in socio-emotional adjustment,and the developmental characteristics of implicit and explicit ER during adolescence are described.Subsequently,by employing the top-down model of personality,coping,and emotion,how dispositional optimism may affect psychological adjustment from the perspective of ER is analyzed.Furthermore,how the differences in adolescents’dispositional optimism may be reflected by the differences in implicit ER is discussed.Finally,recommendations for future research are outlined.展开更多
Culture of the garden plants disposition was expressed in many aspects,such as the plant disposition with special cultural environment and specific environment,expression of urban culture in the plant disposition,appl...Culture of the garden plants disposition was expressed in many aspects,such as the plant disposition with special cultural environment and specific environment,expression of urban culture in the plant disposition,application of plants with historical and cultural connotations in the design and protection for ancient and famous trees.展开更多
With rapid development of economy and emergence of more and more high-grade residences,it had highlighted that high-grade residence was the inevitable tendency of economic development and urban construction.Based on t...With rapid development of economy and emergence of more and more high-grade residences,it had highlighted that high-grade residence was the inevitable tendency of economic development and urban construction.Based on the fact that high-grade residences paid more attention to harmony of human and architecture with nature and required higher for landscaping,the paper emphasized that landscape quality of high-grade residences was the key factor deciding quality of the residence.In view of insufficiencies of plant landscaping planning in high-grade residences at home and abroad,by taking high-grade residences in Hangzhou City for example,analysis had been conducted by selecting typical cases.It pointed out that plants disposition in high-grade residences was unreasonable,architectures and landscapes were isolated,and greening ratio was stressed while design was neglected.And then,corresponding solutions had been proposed.In terms of plants selection,it should reasonably utilize native tree species,and properly select new and high-quality plant species.In terms of harmonious unity between plant landscape and architecture,it should lay stress on unity between sensory design and comfort design.In terms of plant design and disposition,it should stick to the theme of "residential environment",so as to rationalize plant design and disposition,and create more comfortable residential environment.展开更多
Objectives:Depressive symptoms are common in heart failure(HF)patients and they may exacerbate the progression of HF.Thus,identifying associations with depressive symptoms is essential to develop effective interventio...Objectives:Depressive symptoms are common in heart failure(HF)patients and they may exacerbate the progression of HF.Thus,identifying associations with depressive symptoms is essential to develop effective interventions to alleviate patients’depressive symptoms.Therefore,this study aimed to explore the factors related to HF patients’depressive symptoms.Methods:Potential hospitalized patients were recruited from a university-affiliated hospital by convenience sampling.This study included 321 HF patients who had completed information about depressive symptoms,functional capacity,social support,dispositional optimism,self-care confidence,and health literacy.Descriptive statistics were used to characterize the sample.Independent group t-tests and one-way analysis of variance were used to assess the difference in depressive symptoms score in demographic and clinical characteristics,while Pearson’s correlation was used to assess the associations among continuous variables.Results:The scores for functional capacity,social support,dispositional optimism,self-care confidence,and health literacy were negatively associated with the score for depressive symptoms.The interaction effect between the functional capacity and the dispositional optimism on depressive symptoms was significant.Conclusions:Interventions targeted improving the above-mentioned factors may be beneficial to reduce depressive symptoms in HF patients.展开更多
Based on relevant materials, the paper had analyzed the macro-function of roadside trees from the perspectives of urban eco-environment construction and urban plants landscape construction. By taking Yangling City as ...Based on relevant materials, the paper had analyzed the macro-function of roadside trees from the perspectives of urban eco-environment construction and urban plants landscape construction. By taking Yangling City as the demonstration area, the field study had been conducted on trees along 38 roads, which had been analyzed from the aspects of the species of roadside trees, disposition modes and seasonable change. It had found that roadside trees were abundant, including 27 species belonging to 22 families, but the disposition mode was simple. In view of existing problems, suggestions had been proposed. It should make use of native tree species to construct regional characteristic roads; enhance evergreen tree species and enrich seasonable scenery; cultivate fast-growing and slowly-growing tree species alternately and avoid landscape blank; dispose upper, middle and lower layer of plants species reasonably and construct multiple layers of plants landscape. Several good roadside tree species had been recommended, so as to provide scientific reference for roadside greening construction.展开更多
Based on survey of plant species and disposition in major gardens at arid valley and optimization of plant disposition in Sichuan University for Nationalities,the study pointed out the overall target for disposition o...Based on survey of plant species and disposition in major gardens at arid valley and optimization of plant disposition in Sichuan University for Nationalities,the study pointed out the overall target for disposition optimization of garden plants in arid valley,concluded the principles and approaches to optimize garden plant disposition at arid valley and highlight garden features at arid valley,emphasized the vital significance to develop local wild plant resources and introduce exotic garden plants.展开更多
With ecological theory followed during disposition and application of landscape plants in residential area as the guidance,ecological landscape concept was established.It emphasized that landscape plants disposition s...With ecological theory followed during disposition and application of landscape plants in residential area as the guidance,ecological landscape concept was established.It emphasized that landscape plants disposition should aim at making the nature reappear,ameliorating and maintaining ecological balance in residential area,with harmonious coexistence between human and nature as the goal,and with systematicness of landscape greening,diversity of biological development and sustainability of plant landscaping as the mission,so as to achieve plane systematicness,spatial hierarchy and temporal relevance.展开更多
Aim: This study aimed to investigate critical thinking disposition among nurses working in Public Hospitals in Port-Said Governorate.Methods: A descriptive research design was conducted in this study. Totally 196 resp...Aim: This study aimed to investigate critical thinking disposition among nurses working in Public Hospitals in Port-Said Governorate.Methods: A descriptive research design was conducted in this study. Totally 196 respondents were chosen by systemic random sampling, to take part in the study as the sample. Data was collected from April to September in 2015. Tools of data collection: A personal and job characteristics data sheet and California Critical Thinking Disposition Inventory(CCTDI) were used. Results: The results revealed that the total critical thinking disposition score mean was 257.05 ± 20.16 and the highest score mean was 48.67 ± 6.28 for inquisitiveness subscale, while the lowest score mean was 21.36 ± 7.19 for the truth-seeking subscale. Also, none of the personal&job characteristics showed statistically significant relations with the total critical thinking disposition. Conclusion: More than three quarters of the nurses had an ambivalent disposition toward critical thinking, and most nurses' scores indicated a negative tendency towards truth-seeking. So the findings pointed for upgrading nurses' critical thinking through educational programs and a need for more problem-based learning with advanced teaching strategies in clinical areas.展开更多
With the increase of pipelines, corrosion leakage accidents happen frequently. Therefore, nondestructive testing technology is important for ensuring the safe operation of the pipelines and energy mining. In this pape...With the increase of pipelines, corrosion leakage accidents happen frequently. Therefore, nondestructive testing technology is important for ensuring the safe operation of the pipelines and energy mining. In this paper, the structure and principle of magnetic flux leakage （MFL） in-line inspection system is introduced first. Besides, a mathematic model of the system according to the ampere circuit rule, flux continuity theorem, and column coordinate transform is built, and the magnetic flux density in every point of space is calculated based on the theory of finite element analysis. Then we analyze and design the disposition of measurement section probes and sensors combining both three-axis MFL in-line inspection and multi-sensor fusion technology. Its advantage is that the three-axis changes of magnetic flux leakage field are measured by the multi-probes at the same time, so we can determine various defects accurately. Finally, the theory of finite element analysis is used to build a finite element simulation model, and the relationship between defects and MFL inspection signals is studied. Simulation and experiment results verify that the method not only enhances the detection ability to different types of defects but also improves the precision and reliability of the inspection system.展开更多
In order to solve transport problems of industry solid,firstly,a new applicationnotion of pipeline transport was presented,that is to say,combining pretreatment andtransport with disposal techniques of industry solid ...In order to solve transport problems of industry solid,firstly,a new applicationnotion of pipeline transport was presented,that is to say,combining pretreatment andtransport with disposal techniques of industry solid waste.Secondly,the integrated dis-posal and transport system for industry solid waste was introduced,in particular,the oper-ating principles,equipment set-up,key technology and technical parameters.Next,thispaper illustrated the application of this integrated system.Such as it can transport coalsludge with sufficiently high solids content(about 72%～77%)and high apparent viscosity(about 1 000～3 000 Pa.s)directly by pipeline having no use for water and addition agent.Generally,the transport distance is about 1 000 m.This system has been successfullyused in innocuous disposition and efficient utilization of other industrial byproducts or solidwastes,such as city sludge and paper making waste.The integrated system causes nopollution to the environment for its complete seal and realizes protecting the environment,conserving the energy,promoting the development of cycling economic.Finally,the paperdiscussed the research works that were needed for studying such pipeline transport sys-tem and narrates the relevant condition and application status.展开更多
The shale deposits of Damodar Valley have received great attention since preliminary studies indicate their potential for shale gas. However, fundamental information allied to shale gas re- servoir characteristics are...The shale deposits of Damodar Valley have received great attention since preliminary studies indicate their potential for shale gas. However, fundamental information allied to shale gas re- servoir characteristics are still rare in India, as exploration is in the primary stage. In this study, Ba- rakar shale beds of eastern part of Jharia Basin are evaluated for gas reservoir characteristics. It is evident that Barakar shales are carbonaceous, silty, contains sub-angular flecks of quartz and mica, irregular hair-line fractures and showing lithological variations along the bedding planes, signifying terrestrial-fluviatile deposits under reducing environment. The values of TOC varies from 1.21 wt.% to 17.32 wt.%, indicating good source rock potentiality. The vitrinite, liptinite, inertinite and mineral matter ranging from 0.28 vol.% to 12.98 vol.%, 0.17 vol.% to 3.23 vol.%, 0.23 vol.% to 9.05 vol.%, and 74.74 vol.% to 99.10 vol.%, respectively. The ternary facies plot of maceral composition substan- tiated that Barakar shales are vitrinite rich and placed in the thermal-dry gas prone region. The low values of the surface area determined following different methods point towards low methane storage capacity, this is because of diagenesis and alterations of potash feldspar responsible for pore blocking effect. The pore size distribution signifying the micro to mesoporous nature, while Type II sorption curve with the H2 type of hysteresis pattern, specifies the heterogeneity in pore structure mainly combined-slit and bottle neck pores.展开更多
On the basis of investigating vertical greening in urban districts of Chongqing City, major problems were analyzed, dominant greening patterns were summarized, and major plant species suitable for the vertical greenin...On the basis of investigating vertical greening in urban districts of Chongqing City, major problems were analyzed, dominant greening patterns were summarized, and major plant species suitable for the vertical greening of urban districts in Chongqing City were given. On this basis, key technologies and development prospects of the vertical greening were explored.展开更多
This paper explores the disposition effect, the tendency of investors to hold losing investments too long and sell winning investments too soon, by analyzing a unique data set that consists of the buying and selling p...This paper explores the disposition effect, the tendency of investors to hold losing investments too long and sell winning investments too soon, by analyzing a unique data set that consists of the buying and selling positions of open-end fund investors in China. Results show that investors' buying and selling behaviors are significantly affected by fund performance. The reasons that lie behind such results are mainly related to the non-persistence of fund performance. When fund performance is non-persistent, investors are not clear about the future returns on funds. So, investors, especially individual investors, would have to realize the profits on hand immediately. Meanwhile, fund investors are highly sensitive to fund age and loading fees, but not sensitive to management fees charged by funds when they buy or sell fund shares.展开更多
Developed by the American Forests, CITYgreen5.0 model has been widely applied to urban forestry research and has played an important role in analyzing quantitatively the ecological benefits produced by varied green-sp...Developed by the American Forests, CITYgreen5.0 model has been widely applied to urban forestry research and has played an important role in analyzing quantitatively the ecological benefits produced by varied green-space ecosystems. One of the functions of this model is to evaluate quickly and objectively on parts of the ecological benefits possibly produced by different design schemes for the same small-scale green-space project before the establishment. A comparative analysis was conducted by modeling partial ecological benefits potentially produced by green-spaces of two different design schemes for the same roof garden of Chuangfushidai-Junjingyuan in Shenzhen, given the growth status of plants both immediately after the establishment and 20 years later. Meanwhile, the project costs for each design scheme were also taken into consideration. The results showed that scheme II, mainly designed with a natural style of plant disposition, had a better greenery structure than that of scheme I, which was basically designed with a regular style of plant disposition. The estimated value of the partial ecological benefits produced by scheme II was larger than that of scheme I and the benefit-cost ratio of scheme II was more rational. It was suggested that scheme II be put into practice.展开更多
Natural products(NPs) are compounds that are derived from natural sources such as plants, animals, and microisms. Therapeutics has benefited from numerous drug classes derived from natural product sources. The Biophar...Natural products(NPs) are compounds that are derived from natural sources such as plants, animals, and microisms. Therapeutics has benefited from numerous drug classes derived from natural product sources. The Biopharmaceutics Drug position Classification System(BDDCS) was proposed to serve as a basis for predicting the importance of transporters and enzymes in determining drug bioavailability and disposition. It categorizes drugs into one of four biopharmaceutical classes according to their water solubility and extent of metabolism. The present paper reviews 109 drugs from natural product sources: 29% belong to class 1(high solubility, extensive metabolism), 22% to class 2(low solubility, extensive metabolism), 40% to class 3(high solubility, poor metabolism), and 9% to class 4(low solubility, poor metabolism). Herein we evaluated the characteristics of NPs in terms of BDDCS class for all 109 drugs as wells as for subsets of NPs drugs derived from plant sources as antibiotics. In the 109 NPs drugs, we piled 32 drugs from plants, 50%(16) of total in class 1, 22%(7) in class 2 and 28%(9) in class 3, none found in class 4; Meantime, the antibiotics were found 5(16%) in class 2, 22(71%) in class 3, and 4(13%) in class 4; no drug was found in class 1. Based on this classification, we anticipate BDDCS to serve as a useful adjunct in evaluating the potential characteristics of new natural products.展开更多
文摘The subjective well-being of the elderly is an integral part of healthy aging.This review introduces the concept of subjective well-being of the elderly and the evaluation tools used,reviews the influencing factors of subjective well-being of the elderly,and summarizes the intervention measures of subjective well-being of the elderly.From the perspective of positive psychology,based on the introduction of the concept and evaluation tools of temperament optimism,this paper reviews the research status of temperament optimism and subjective well-being and the research progress of their correlation,so as to provide a theoretical basis for the intervention to improve the subjective well-being of the elderly.
基金supported by grants from the National Natural Science Foundation of China(Grant No.31971018)Institute of Psychology,Chinese Academy of Sciences(Grant No.GJ202001)+2 种基金Educational Science Planning Project of Hubei Province(Grant No.2020GB056)the Research Fund Project(Grant No.2021Z01)the East Lake Scholar Program of Wuhan Sports University,China(Period:July 2017-July 2022)
文摘The development of adaptive emotion regulation(ER)plays a pivotal role in adolescent mental health and socio-emotional adaptation.Dispositional optimism,as an important protective factor for adolescent adjustment,may affect adolescent ER and subsequently influence adaptive outcomes.In this review,the changes and challenges,the role of ER in socio-emotional adjustment,and the developmental characteristics of implicit and explicit ER during adolescence are described.Subsequently,by employing the top-down model of personality,coping,and emotion,how dispositional optimism may affect psychological adjustment from the perspective of ER is analyzed.Furthermore,how the differences in adolescents’dispositional optimism may be reflected by the differences in implicit ER is discussed.Finally,recommendations for future research are outlined.
文摘Culture of the garden plants disposition was expressed in many aspects,such as the plant disposition with special cultural environment and specific environment,expression of urban culture in the plant disposition,application of plants with historical and cultural connotations in the design and protection for ancient and famous trees.
文摘With rapid development of economy and emergence of more and more high-grade residences,it had highlighted that high-grade residence was the inevitable tendency of economic development and urban construction.Based on the fact that high-grade residences paid more attention to harmony of human and architecture with nature and required higher for landscaping,the paper emphasized that landscape quality of high-grade residences was the key factor deciding quality of the residence.In view of insufficiencies of plant landscaping planning in high-grade residences at home and abroad,by taking high-grade residences in Hangzhou City for example,analysis had been conducted by selecting typical cases.It pointed out that plants disposition in high-grade residences was unreasonable,architectures and landscapes were isolated,and greening ratio was stressed while design was neglected.And then,corresponding solutions had been proposed.In terms of plants selection,it should reasonably utilize native tree species,and properly select new and high-quality plant species.In terms of harmonious unity between plant landscape and architecture,it should lay stress on unity between sensory design and comfort design.In terms of plant design and disposition,it should stick to the theme of "residential environment",so as to rationalize plant design and disposition,and create more comfortable residential environment.
文摘Objectives:Depressive symptoms are common in heart failure(HF)patients and they may exacerbate the progression of HF.Thus,identifying associations with depressive symptoms is essential to develop effective interventions to alleviate patients’depressive symptoms.Therefore,this study aimed to explore the factors related to HF patients’depressive symptoms.Methods:Potential hospitalized patients were recruited from a university-affiliated hospital by convenience sampling.This study included 321 HF patients who had completed information about depressive symptoms,functional capacity,social support,dispositional optimism,self-care confidence,and health literacy.Descriptive statistics were used to characterize the sample.Independent group t-tests and one-way analysis of variance were used to assess the difference in depressive symptoms score in demographic and clinical characteristics,while Pearson’s correlation was used to assess the associations among continuous variables.Results:The scores for functional capacity,social support,dispositional optimism,self-care confidence,and health literacy were negatively associated with the score for depressive symptoms.The interaction effect between the functional capacity and the dispositional optimism on depressive symptoms was significant.Conclusions:Interventions targeted improving the above-mentioned factors may be beneficial to reduce depressive symptoms in HF patients.
文摘Based on relevant materials, the paper had analyzed the macro-function of roadside trees from the perspectives of urban eco-environment construction and urban plants landscape construction. By taking Yangling City as the demonstration area, the field study had been conducted on trees along 38 roads, which had been analyzed from the aspects of the species of roadside trees, disposition modes and seasonable change. It had found that roadside trees were abundant, including 27 species belonging to 22 families, but the disposition mode was simple. In view of existing problems, suggestions had been proposed. It should make use of native tree species to construct regional characteristic roads; enhance evergreen tree species and enrich seasonable scenery; cultivate fast-growing and slowly-growing tree species alternately and avoid landscape blank; dispose upper, middle and lower layer of plants species reasonably and construct multiple layers of plants landscape. Several good roadside tree species had been recommended, so as to provide scientific reference for roadside greening construction.
基金Supported by Preliminary Result of Investigation and Evaluation on Applicable Plant Resources for Garden Greening at Arid Valley Whichis the Important Research Project of Natural Science of Sichuan University for Nationalities~~
文摘Based on survey of plant species and disposition in major gardens at arid valley and optimization of plant disposition in Sichuan University for Nationalities,the study pointed out the overall target for disposition optimization of garden plants in arid valley,concluded the principles and approaches to optimize garden plant disposition at arid valley and highlight garden features at arid valley,emphasized the vital significance to develop local wild plant resources and introduce exotic garden plants.
基金Supported by Education Department of Anhui Province (Characteristic Subject Construction of Anhui Province)~~
文摘With ecological theory followed during disposition and application of landscape plants in residential area as the guidance,ecological landscape concept was established.It emphasized that landscape plants disposition should aim at making the nature reappear,ameliorating and maintaining ecological balance in residential area,with harmonious coexistence between human and nature as the goal,and with systematicness of landscape greening,diversity of biological development and sustainability of plant landscaping as the mission,so as to achieve plane systematicness,spatial hierarchy and temporal relevance.
文摘Aim: This study aimed to investigate critical thinking disposition among nurses working in Public Hospitals in Port-Said Governorate.Methods: A descriptive research design was conducted in this study. Totally 196 respondents were chosen by systemic random sampling, to take part in the study as the sample. Data was collected from April to September in 2015. Tools of data collection: A personal and job characteristics data sheet and California Critical Thinking Disposition Inventory(CCTDI) were used. Results: The results revealed that the total critical thinking disposition score mean was 257.05 ± 20.16 and the highest score mean was 48.67 ± 6.28 for inquisitiveness subscale, while the lowest score mean was 21.36 ± 7.19 for the truth-seeking subscale. Also, none of the personal&job characteristics showed statistically significant relations with the total critical thinking disposition. Conclusion: More than three quarters of the nurses had an ambivalent disposition toward critical thinking, and most nurses' scores indicated a negative tendency towards truth-seeking. So the findings pointed for upgrading nurses' critical thinking through educational programs and a need for more problem-based learning with advanced teaching strategies in clinical areas.
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 61273164 and 61034005)the National High Technology Research and Development Program of China (Grant No. 2012AA040104)the Fundamental Research Funds for the Central Universities, China (Grant No. N100104102)
文摘With the increase of pipelines, corrosion leakage accidents happen frequently. Therefore, nondestructive testing technology is important for ensuring the safe operation of the pipelines and energy mining. In this paper, the structure and principle of magnetic flux leakage （MFL） in-line inspection system is introduced first. Besides, a mathematic model of the system according to the ampere circuit rule, flux continuity theorem, and column coordinate transform is built, and the magnetic flux density in every point of space is calculated based on the theory of finite element analysis. Then we analyze and design the disposition of measurement section probes and sensors combining both three-axis MFL in-line inspection and multi-sensor fusion technology. Its advantage is that the three-axis changes of magnetic flux leakage field are measured by the multi-probes at the same time, so we can determine various defects accurately. Finally, the theory of finite element analysis is used to build a finite element simulation model, and the relationship between defects and MFL inspection signals is studied. Simulation and experiment results verify that the method not only enhances the detection ability to different types of defects but also improves the precision and reliability of the inspection system.
基金Science and Technology Corporation Innovation Fund of China(02C26211100499) PH.D Program Fund(20020290011)
文摘In order to solve transport problems of industry solid,firstly,a new applicationnotion of pipeline transport was presented,that is to say,combining pretreatment andtransport with disposal techniques of industry solid waste.Secondly,the integrated dis-posal and transport system for industry solid waste was introduced,in particular,the oper-ating principles,equipment set-up,key technology and technical parameters.Next,thispaper illustrated the application of this integrated system.Such as it can transport coalsludge with sufficiently high solids content(about 72%～77%)and high apparent viscosity(about 1 000～3 000 Pa.s)directly by pipeline having no use for water and addition agent.Generally,the transport distance is about 1 000 m.This system has been successfullyused in innocuous disposition and efficient utilization of other industrial byproducts or solidwastes,such as city sludge and paper making waste.The integrated system causes nopollution to the environment for its complete seal and realizes protecting the environment,conserving the energy,promoting the development of cycling economic.Finally,the paperdiscussed the research works that were needed for studying such pipeline transport sys-tem and narrates the relevant condition and application status.
基金Ministry of Coal for funding support of the project entitled "Shale gas potentiality eva luation of Damodar Basin of India" (Coal S & T grant: CE(Eo I)/30) under the research work has been carried out
文摘The shale deposits of Damodar Valley have received great attention since preliminary studies indicate their potential for shale gas. However, fundamental information allied to shale gas re- servoir characteristics are still rare in India, as exploration is in the primary stage. In this study, Ba- rakar shale beds of eastern part of Jharia Basin are evaluated for gas reservoir characteristics. It is evident that Barakar shales are carbonaceous, silty, contains sub-angular flecks of quartz and mica, irregular hair-line fractures and showing lithological variations along the bedding planes, signifying terrestrial-fluviatile deposits under reducing environment. The values of TOC varies from 1.21 wt.% to 17.32 wt.%, indicating good source rock potentiality. The vitrinite, liptinite, inertinite and mineral matter ranging from 0.28 vol.% to 12.98 vol.%, 0.17 vol.% to 3.23 vol.%, 0.23 vol.% to 9.05 vol.%, and 74.74 vol.% to 99.10 vol.%, respectively. The ternary facies plot of maceral composition substan- tiated that Barakar shales are vitrinite rich and placed in the thermal-dry gas prone region. The low values of the surface area determined following different methods point towards low methane storage capacity, this is because of diagenesis and alterations of potash feldspar responsible for pore blocking effect. The pore size distribution signifying the micro to mesoporous nature, while Type II sorption curve with the H2 type of hysteresis pattern, specifies the heterogeneity in pore structure mainly combined-slit and bottle neck pores.
基金Supported by Fundamental Scientific Research Program of Chongqing Science&Technology Commission
文摘On the basis of investigating vertical greening in urban districts of Chongqing City, major problems were analyzed, dominant greening patterns were summarized, and major plant species suitable for the vertical greening of urban districts in Chongqing City were given. On this basis, key technologies and development prospects of the vertical greening were explored.
文摘This paper explores the disposition effect, the tendency of investors to hold losing investments too long and sell winning investments too soon, by analyzing a unique data set that consists of the buying and selling positions of open-end fund investors in China. Results show that investors' buying and selling behaviors are significantly affected by fund performance. The reasons that lie behind such results are mainly related to the non-persistence of fund performance. When fund performance is non-persistent, investors are not clear about the future returns on funds. So, investors, especially individual investors, would have to realize the profits on hand immediately. Meanwhile, fund investors are highly sensitive to fund age and loading fees, but not sensitive to management fees charged by funds when they buy or sell fund shares.
文摘Developed by the American Forests, CITYgreen5.0 model has been widely applied to urban forestry research and has played an important role in analyzing quantitatively the ecological benefits produced by varied green-space ecosystems. One of the functions of this model is to evaluate quickly and objectively on parts of the ecological benefits possibly produced by different design schemes for the same small-scale green-space project before the establishment. A comparative analysis was conducted by modeling partial ecological benefits potentially produced by green-spaces of two different design schemes for the same roof garden of Chuangfushidai-Junjingyuan in Shenzhen, given the growth status of plants both immediately after the establishment and 20 years later. Meanwhile, the project costs for each design scheme were also taken into consideration. The results showed that scheme II, mainly designed with a natural style of plant disposition, had a better greenery structure than that of scheme I, which was basically designed with a regular style of plant disposition. The estimated value of the partial ecological benefits produced by scheme II was larger than that of scheme I and the benefit-cost ratio of scheme II was more rational. It was suggested that scheme II be put into practice.
基金supported by China Scholarship Council(No.201208320187CSC)
文摘Natural products(NPs) are compounds that are derived from natural sources such as plants, animals, and microisms. Therapeutics has benefited from numerous drug classes derived from natural product sources. The Biopharmaceutics Drug position Classification System(BDDCS) was proposed to serve as a basis for predicting the importance of transporters and enzymes in determining drug bioavailability and disposition. It categorizes drugs into one of four biopharmaceutical classes according to their water solubility and extent of metabolism. The present paper reviews 109 drugs from natural product sources: 29% belong to class 1(high solubility, extensive metabolism), 22% to class 2(low solubility, extensive metabolism), 40% to class 3(high solubility, poor metabolism), and 9% to class 4(low solubility, poor metabolism). Herein we evaluated the characteristics of NPs in terms of BDDCS class for all 109 drugs as wells as for subsets of NPs drugs derived from plant sources as antibiotics. In the 109 NPs drugs, we piled 32 drugs from plants, 50%(16) of total in class 1, 22%(7) in class 2 and 28%(9) in class 3, none found in class 4; Meantime, the antibiotics were found 5(16%) in class 2, 22(71%) in class 3, and 4(13%) in class 4; no drug was found in class 1. Based on this classification, we anticipate BDDCS to serve as a useful adjunct in evaluating the potential characteristics of new natural products.
