[Objective] The research aimed to reduce emission load of the farmland runoff by using ecological ditches and pond. [Method] N and P intercepting project construction of the ecological ditches and pond in Zhaiji Villa...[Objective] The research aimed to reduce emission load of the farmland runoff by using ecological ditches and pond. [Method] N and P intercepting project construction of the ecological ditches and pond in Zhaiji Village, Xiangcheng District, Suzhou City as research object, by repairing 1 834 m3 of original drainage ditches, newly excavating 6 800 m2 of ecological main ditches and 6 000 m2 of artificial purification ecological pond, etc., runoff emission load in real control area of the project was counted. [Result] Annual net loads of the runoff emission for TN and TP were respectively 2 552.22 and 95.00 kg in 33.3 hm2 of farmland. Annual runoff intercepting loads of TN and TP were respectively 1 225.07 and 50.35 kg in ditches. Annual runoff intercepting loads of TN and TP were respectively 1 327.15 and 44.65 kg in ecological pond. In effluent, TN concentration was 6.32 mg/L and was smaller than 15 mg/L. TP concentration was 0.25 mg/L and was smaller than 0.5 mg/L. They both reached level-one A discharge standard. [Conclusion] The research provided theoretical basis for effective control of the agricultural non-point source pollution in Taihu Lake basin.展开更多
Calibration coefficients validation is the foundation for ascertaining the sensor performance and carrying out the quantitative application.Based on the analysis of the differences between the calibration and validati...Calibration coefficients validation is the foundation for ascertaining the sensor performance and carrying out the quantitative application.Based on the analysis of the differences between the calibration and validation,two calibration coefficients validation methods were introduced in this paper.Taking the HJ-1A satellite CCD1 camera as an example,the uncertainties of calibration coefficients validation were analyzed.The calibration coefficients validation errors were simulated based on the measured data at an Inner Mongolia test site.The result showed that in the large view angle,the ground directional reflectance variation and the atmospheric path variation were the main error sources in calibration coefficients validation.The ground directional reflectance correction and atmospheric observation angle normalization should be carried out to improve the validation accuracy of calibration coefficients.展开更多
Objective: To study the treatment of B-Thalas-semia (ThE) with Chinese herbal medicine for Bushen Yisui (BSYS), its theoretical base and molecular mechanism. Methods: Seventy-eight patients with ThE were treated with ...Objective: To study the treatment of B-Thalas-semia (ThE) with Chinese herbal medicine for Bushen Yisui (BSYS), its theoretical base and molecular mechanism. Methods: Seventy-eight patients with ThE were treated with BSYS recipe (consisted of 11 Chinese herbal drugs as Dogwood fruit, Fleeceflower root, prepared Rehmannia root and turtle shell, etc.) orally taken, 3 times per day, 10 g/time, 3 months as one therapeutic course. Hemoglobin (Hb), red blood cell (RBC), reticulocyte (Ret) and hemoglobin F (HbF) were checked every month. At the same time, PAGE, PVR, PCR-SSCP, RT-PCR, DNA series analysis, mRNA gene expression analysis techniques were used to conduct the systematic gene analysis in patients to study the molecular mechanism of TCM treatment from aspects of gene mutation, gene expression and control-regulation. Results: All the blood criteria in patients after BSYS treatment were improved significantly with clinical symptoms展开更多
This mixed methods study investigates learning outcomes resulting from college attendance in the Chinese mainland.Data for this study is derived from undergraduate survey responses at 21 universities and interviews wi...This mixed methods study investigates learning outcomes resulting from college attendance in the Chinese mainland.Data for this study is derived from undergraduate survey responses at 21 universities and interviews with 64 seniors at five universities.Factor analysis reduced learning outcome items to two factors,and 19 categories of learning outcomes were distilled from interview data.These categories were then reduced to four domains:knowledge,skills,intrapersonal awareness,and interpersonal competence.Compared with literature generated in the West,intercultural competency as well as quantitative and computer literacy are missing in the Chinese higher education context.Student learning is an integrated whole and takes place in diverse settings in and outside the classroom.展开更多
The luminophors MeO-SiO_2:Eu^(3+),Bi^(3+)and MeO-SiO_2Bi^(3+)(Me=Mg.Sr)were synthesized at relatively lower temperature by the sol-gel method using the silica sol as a source of silica.The optimum composition and synt...The luminophors MeO-SiO_2:Eu^(3+),Bi^(3+)and MeO-SiO_2Bi^(3+)(Me=Mg.Sr)were synthesized at relatively lower temperature by the sol-gel method using the silica sol as a source of silica.The optimum composition and synthesis conditions were obtained by studying the excitation and emission spectra and the effects of energy transfer from the Bi^(3+)ions to the Eu^(3+)ions.展开更多
In this paper, on the basis of the heat conduction equation without consideration of the advection and turbulence effects, one-dimensional model for describing surface sea temperature ( T1), bottom sea temperature ( T...In this paper, on the basis of the heat conduction equation without consideration of the advection and turbulence effects, one-dimensional model for describing surface sea temperature ( T1), bottom sea temperature ( Tt ) and the thickness of the upper homogeneous layer ( h ) is developed in terms of the dimensionless temperature θT and depth η and self-simulation function θT - f(η) of vertical temperature profile by means of historical temperature data.The results of trial prediction with our one-dimensional model on T, Th, h , the thickness and gradient of thermocline are satisfactory to some extent.展开更多
-The reclamation rate formula for concentrating tritium by the addition of 'regular and quantitative aqueous sample' is advanced.Effects of different adding modes on reclamation rate and the reclamation rate r...-The reclamation rate formula for concentrating tritium by the addition of 'regular and quantitative aqueous sample' is advanced.Effects of different adding modes on reclamation rate and the reclamation rate reappearance are studied; and the analytic program of tritium in seawater is also proposed. By using Fe-Ni electrodes and the electrolysis temperature of 2± 0. 5℃, β value reaches 20. Reclamation rates reach 83% and 76% when 250 cm3 and 500 cm3 seawater is concentrated to 8 cm3.The relatively appropriate toluene/Trition ratio for counting aqueous sample under the normal temperature is proposed.The computer program of different addition electrolytic concentrations for measuring tritium is coded, and the tritium data base is established.展开更多
With the development of the global economy, learning English has become the need of many Chinese. People have created a lot of English study methods such as Crazy English, Special English, Peipei English, Dapao Englis...With the development of the global economy, learning English has become the need of many Chinese. People have created a lot of English study methods such as Crazy English, Special English, Peipei English, Dapao English, and so on. These methods have made a great impact on our English teaching model. Although there are no enough scientific theories in them, we can find the special ways to learn English well especially for English listening and speaking. If you analyze them carefully, you will be surprised to find that they are very helpful to improve your listening and speaking ability, and overcome the affective shock. Following some of these methods, the learners can get more knowledge, be more interested in English, study harder and obtain the achievements easily, while the teachers can improve their teaching according to them. At last, the author points out that if the teachers can use them in class correctly, the ideal result will come out.展开更多
The investigation was performed on 4 Mullets (27～49 cm long and weighing 225～1 500 g each) of both sexes from the waters off Tianjin. Small pieces of the gills were sliced and immersionfixed in a buffer mixture of 1...The investigation was performed on 4 Mullets (27～49 cm long and weighing 225～1 500 g each) of both sexes from the waters off Tianjin. Small pieces of the gills were sliced and immersionfixed in a buffer mixture of 1.5% glutaraldehyde, 1.5% paraformaldehyde and 0.1 mol/dm~3 phosphate for at least 24 h. After fixation in phosphate buffered 1% OOat 4 ℃ for 1 h, the tissues were展开更多
This paper analyzed necessity and laws of natural and cultural resource consumption and creation activities as a branch of economics or research direction, proposed such basic frameworks of landscape economics such as...This paper analyzed necessity and laws of natural and cultural resource consumption and creation activities as a branch of economics or research direction, proposed such basic frameworks of landscape economics such as connotations, basic problems and research methods on the basis of sorting out literature. Landscape economics is a social science focusing on the public preferences for natural and humanistic landscapes, and the preference evolution laws, economic laws of landscape resource consumption and creation activities. The basic problems include evaluation of landscape resource value, optimal utilization of landscape resources, landscape resource development and protection policies, formation and creation of diversified landscape structure. The research methods include investigation of consumers' willingness, experiment and behavioral economics, logical reasoning, and case study.展开更多
Background To detect and identify mosquitoes using their characteristic high-pitched sound,we have developed a smartphone application,known as the‘HumBug sensor’,that records the acoustic signature of this sound,alo...Background To detect and identify mosquitoes using their characteristic high-pitched sound,we have developed a smartphone application,known as the‘HumBug sensor’,that records the acoustic signature of this sound,along with the time and location.This data is then sent remotely to a server where algorithms identify the species according to their distinctive acoustic signature.Whilst this system works well,a key question that remains is what mechanisms will lead to effective uptake and use of this mosquito survey tool?We addressed this question by working with local communities in rural Tanzania and providing three alternative incentives:money only,short message service(SMS)reminders and money,and SMS reminders only.We also had a control group with no incentive.Methods A multi-site,quantitative empirical study was conducted in four villages in Tanzania from April to August 2021.Consenting participants(n=148)were recruited and placed into one of the three intervention arms:monetary incentives only;SMS reminders with monetary incentives;and SMS reminders only.There was also a control group(no intervention).To test effectiveness of the mechanisms,the number of audio uploads to the server of the four trial groups on their specific dates were compared.Qualitative focus group discussions and feedback surveys were also conducted to explore participants’perspectives on their participation in the study and to capture their experiences of using the HumBug sensor.Results Qualitative data analysis revealed that for many participants(37 out of 81),the main motivation expressed was to learn more about the types of mosquitoes present in their houses.Results from the quantitative empirical study indicate that the participants in the‘control’group switched on their HumBug sensors more over the 14-week period(8 out of 14 weeks)when compared to those belonging to the‘SMS reminders and monetary incentives’trial group.These findings are statistically significant(p<0.05 or p>0.95 under a two-sided z-test),revealing that the provision of monetary incentives and sending SMS reminders did not appear to encourage greater number of audio uploads when compared to the control.Conclusions Knowledge on the presence of harmful mosquitoes was the strongest motive for local communities to collect and upload mosquito sound data via the HumBug sensor in rural Tanzania.This finding suggests that most efforts should be made to improve flow of real-time information back to the communities on types and risks associated with mosquitoes present in their houses.展开更多
Based on the collaborative innovation of governments, enterprises, colleges, scientific institutions and users, the possible shortcomings of talent training of marine cultural industry in Shanghai City were analyzed ...Based on the collaborative innovation of governments, enterprises, colleges, scientific institutions and users, the possible shortcomings of talent training of marine cultural industry in Shanghai City were analyzed by using the case study method, and some specific measures for talent trainingofmarineculturalindustryinShanghaiCitywereproposed.展开更多
With the vigorous development of innovation and entrepreneurship in China,a large number of managers of innovation and entrepreneurship enterprises are studying for MBA degree.The enrollment scale of the MBA program i...With the vigorous development of innovation and entrepreneurship in China,a large number of managers of innovation and entrepreneurship enterprises are studying for MBA degree.The enrollment scale of the MBA program is expanding.In order to improve the quality of MBA dissertation and promote the sustainable and healthy development of MBA education,based on the author's years of MBA teaching experience and dissertation writing guidance experience,this paper introduces three research methods of dissertation writing skills:case study method,enterprise diagnosis method and survey research method,and analyzes five steps of MBA dissertation writing,which can be used as a reference for MBA(EMBA)students to improve their dissertation writing level.展开更多
基金Supported by Provincial Special Fund,Comprehensive Treatment of the Water Environment(Phase V)in Taihu Lake,China[xiangfagaitou(2011)27]
文摘[Objective] The research aimed to reduce emission load of the farmland runoff by using ecological ditches and pond. [Method] N and P intercepting project construction of the ecological ditches and pond in Zhaiji Village, Xiangcheng District, Suzhou City as research object, by repairing 1 834 m3 of original drainage ditches, newly excavating 6 800 m2 of ecological main ditches and 6 000 m2 of artificial purification ecological pond, etc., runoff emission load in real control area of the project was counted. [Result] Annual net loads of the runoff emission for TN and TP were respectively 2 552.22 and 95.00 kg in 33.3 hm2 of farmland. Annual runoff intercepting loads of TN and TP were respectively 1 225.07 and 50.35 kg in ditches. Annual runoff intercepting loads of TN and TP were respectively 1 327.15 and 44.65 kg in ecological pond. In effluent, TN concentration was 6.32 mg/L and was smaller than 15 mg/L. TP concentration was 0.25 mg/L and was smaller than 0.5 mg/L. They both reached level-one A discharge standard. [Conclusion] The research provided theoretical basis for effective control of the agricultural non-point source pollution in Taihu Lake basin.
基金supported by the International Science and Technology Cooperation Program of China(Grant No.2008DFA21540)the National Hi-Tech Research and Development Program of China(Grant No.2006AA12Z113)+1 种基金the Chinese Defense Advance Research Program of Science and Technologythe Young Talents Filed Special Project of Institute of Remote Sensing and Application of Chinese Academy of Sciences
文摘Calibration coefficients validation is the foundation for ascertaining the sensor performance and carrying out the quantitative application.Based on the analysis of the differences between the calibration and validation,two calibration coefficients validation methods were introduced in this paper.Taking the HJ-1A satellite CCD1 camera as an example,the uncertainties of calibration coefficients validation were analyzed.The calibration coefficients validation errors were simulated based on the measured data at an Inner Mongolia test site.The result showed that in the large view angle,the ground directional reflectance variation and the atmospheric path variation were the main error sources in calibration coefficients validation.The ground directional reflectance correction and atmospheric observation angle normalization should be carried out to improve the validation accuracy of calibration coefficients.
文摘Objective: To study the treatment of B-Thalas-semia (ThE) with Chinese herbal medicine for Bushen Yisui (BSYS), its theoretical base and molecular mechanism. Methods: Seventy-eight patients with ThE were treated with BSYS recipe (consisted of 11 Chinese herbal drugs as Dogwood fruit, Fleeceflower root, prepared Rehmannia root and turtle shell, etc.) orally taken, 3 times per day, 10 g/time, 3 months as one therapeutic course. Hemoglobin (Hb), red blood cell (RBC), reticulocyte (Ret) and hemoglobin F (HbF) were checked every month. At the same time, PAGE, PVR, PCR-SSCP, RT-PCR, DNA series analysis, mRNA gene expression analysis techniques were used to conduct the systematic gene analysis in patients to study the molecular mechanism of TCM treatment from aspects of gene mutation, gene expression and control-regulation. Results: All the blood criteria in patients after BSYS treatment were improved significantly with clinical symptoms
基金This study was supported in part by a Humanities and Social Sciences Grant(13YJC880002)from the Ministry of Education of China.
文摘This mixed methods study investigates learning outcomes resulting from college attendance in the Chinese mainland.Data for this study is derived from undergraduate survey responses at 21 universities and interviews with 64 seniors at five universities.Factor analysis reduced learning outcome items to two factors,and 19 categories of learning outcomes were distilled from interview data.These categories were then reduced to four domains:knowledge,skills,intrapersonal awareness,and interpersonal competence.Compared with literature generated in the West,intercultural competency as well as quantitative and computer literacy are missing in the Chinese higher education context.Student learning is an integrated whole and takes place in diverse settings in and outside the classroom.
文摘The luminophors MeO-SiO_2:Eu^(3+),Bi^(3+)and MeO-SiO_2Bi^(3+)(Me=Mg.Sr)were synthesized at relatively lower temperature by the sol-gel method using the silica sol as a source of silica.The optimum composition and synthesis conditions were obtained by studying the excitation and emission spectra and the effects of energy transfer from the Bi^(3+)ions to the Eu^(3+)ions.
文摘In this paper, on the basis of the heat conduction equation without consideration of the advection and turbulence effects, one-dimensional model for describing surface sea temperature ( T1), bottom sea temperature ( Tt ) and the thickness of the upper homogeneous layer ( h ) is developed in terms of the dimensionless temperature θT and depth η and self-simulation function θT - f(η) of vertical temperature profile by means of historical temperature data.The results of trial prediction with our one-dimensional model on T, Th, h , the thickness and gradient of thermocline are satisfactory to some extent.
文摘-The reclamation rate formula for concentrating tritium by the addition of 'regular and quantitative aqueous sample' is advanced.Effects of different adding modes on reclamation rate and the reclamation rate reappearance are studied; and the analytic program of tritium in seawater is also proposed. By using Fe-Ni electrodes and the electrolysis temperature of 2± 0. 5℃, β value reaches 20. Reclamation rates reach 83% and 76% when 250 cm3 and 500 cm3 seawater is concentrated to 8 cm3.The relatively appropriate toluene/Trition ratio for counting aqueous sample under the normal temperature is proposed.The computer program of different addition electrolytic concentrations for measuring tritium is coded, and the tritium data base is established.
文摘With the development of the global economy, learning English has become the need of many Chinese. People have created a lot of English study methods such as Crazy English, Special English, Peipei English, Dapao English, and so on. These methods have made a great impact on our English teaching model. Although there are no enough scientific theories in them, we can find the special ways to learn English well especially for English listening and speaking. If you analyze them carefully, you will be surprised to find that they are very helpful to improve your listening and speaking ability, and overcome the affective shock. Following some of these methods, the learners can get more knowledge, be more interested in English, study harder and obtain the achievements easily, while the teachers can improve their teaching according to them. At last, the author points out that if the teachers can use them in class correctly, the ideal result will come out.
文摘The investigation was performed on 4 Mullets (27～49 cm long and weighing 225～1 500 g each) of both sexes from the waters off Tianjin. Small pieces of the gills were sliced and immersionfixed in a buffer mixture of 1.5% glutaraldehyde, 1.5% paraformaldehyde and 0.1 mol/dm~3 phosphate for at least 24 h. After fixation in phosphate buffered 1% OOat 4 ℃ for 1 h, the tissues were
文摘This paper analyzed necessity and laws of natural and cultural resource consumption and creation activities as a branch of economics or research direction, proposed such basic frameworks of landscape economics such as connotations, basic problems and research methods on the basis of sorting out literature. Landscape economics is a social science focusing on the public preferences for natural and humanistic landscapes, and the preference evolution laws, economic laws of landscape resource consumption and creation activities. The basic problems include evaluation of landscape resource value, optimal utilization of landscape resources, landscape resource development and protection policies, formation and creation of diversified landscape structure. The research methods include investigation of consumers' willingness, experiment and behavioral economics, logical reasoning, and case study.
基金commissioned by Bill and Melinda Gates Foundation,Grant/Award Number:OPP1209888.
文摘Background To detect and identify mosquitoes using their characteristic high-pitched sound,we have developed a smartphone application,known as the‘HumBug sensor’,that records the acoustic signature of this sound,along with the time and location.This data is then sent remotely to a server where algorithms identify the species according to their distinctive acoustic signature.Whilst this system works well,a key question that remains is what mechanisms will lead to effective uptake and use of this mosquito survey tool?We addressed this question by working with local communities in rural Tanzania and providing three alternative incentives:money only,short message service(SMS)reminders and money,and SMS reminders only.We also had a control group with no incentive.Methods A multi-site,quantitative empirical study was conducted in four villages in Tanzania from April to August 2021.Consenting participants(n=148)were recruited and placed into one of the three intervention arms:monetary incentives only;SMS reminders with monetary incentives;and SMS reminders only.There was also a control group(no intervention).To test effectiveness of the mechanisms,the number of audio uploads to the server of the four trial groups on their specific dates were compared.Qualitative focus group discussions and feedback surveys were also conducted to explore participants’perspectives on their participation in the study and to capture their experiences of using the HumBug sensor.Results Qualitative data analysis revealed that for many participants(37 out of 81),the main motivation expressed was to learn more about the types of mosquitoes present in their houses.Results from the quantitative empirical study indicate that the participants in the‘control’group switched on their HumBug sensors more over the 14-week period(8 out of 14 weeks)when compared to those belonging to the‘SMS reminders and monetary incentives’trial group.These findings are statistically significant(p<0.05 or p>0.95 under a two-sided z-test),revealing that the provision of monetary incentives and sending SMS reminders did not appear to encourage greater number of audio uploads when compared to the control.Conclusions Knowledge on the presence of harmful mosquitoes was the strongest motive for local communities to collect and upload mosquito sound data via the HumBug sensor in rural Tanzania.This finding suggests that most efforts should be made to improve flow of real-time information back to the communities on types and risks associated with mosquitoes present in their houses.
基金Supported by Educational Science Research Project of Shanghai City(C16064)
文摘Based on the collaborative innovation of governments, enterprises, colleges, scientific institutions and users, the possible shortcomings of talent training of marine cultural industry in Shanghai City were analyzed by using the case study method, and some specific measures for talent trainingofmarineculturalindustryinShanghaiCitywereproposed.
基金the National Social Science Found for the project"Research on the Effectiveness and Synergy of Innovation and Entrepreneurship in Promoting Employment"(Project No.19BJY057).
文摘With the vigorous development of innovation and entrepreneurship in China,a large number of managers of innovation and entrepreneurship enterprises are studying for MBA degree.The enrollment scale of the MBA program is expanding.In order to improve the quality of MBA dissertation and promote the sustainable and healthy development of MBA education,based on the author's years of MBA teaching experience and dissertation writing guidance experience,this paper introduces three research methods of dissertation writing skills:case study method,enterprise diagnosis method and survey research method,and analyzes five steps of MBA dissertation writing,which can be used as a reference for MBA(EMBA)students to improve their dissertation writing level.
