To investigate the cost-effectiveness of different maintenance treatments of highways in Jiangsu Province, the historical pavement maintenance records, traffic load information and pavement performance data in the pav...To investigate the cost-effectiveness of different maintenance treatments of highways in Jiangsu Province, the historical pavement maintenance records, traffic load information and pavement performance data in the pavement management system （PMS） are recorded and analyzed. Compared with the growth model, the linear model, the logarithm model and the exponential model, the cubic model has higher regression accuracy R2 and it can capture the sigmoid shape of the deterioration curve. So it is selected to simulate the pavement rotting development. The benefit over cost ratio is calculated to quantify the treatment cost- effectiveness. The analysis results show that thin hot mix asphalt （HMA） overlays and micro surfacing are more cost- effective than the. other two treatments on light and moderate traffic roads. Hot in-place recycling and thick HMA overlays have much longer service lives and greater cost-effectiveness under heavy or extra heavy traffic.展开更多
Aim To investigate the active constituents responsible for thepharmacological activities of Angelica sinensis (Oliv) Diels. Methods Chromatography was used toisolate chemical components, and spectroscopy was used to i...Aim To investigate the active constituents responsible for thepharmacological activities of Angelica sinensis (Oliv) Diels. Methods Chromatography was used toisolate chemical components, and spectroscopy was used to identify their structures. Results Sevencompounds were isolated and their structures were identified as ferulic acid (1), conife-rylferukte(2) , bis (2-ethylhexyl) phthalate (3), dibutyl phthalate (4), lignoceric acid (5), palmitic acid(6), and Z-6, 7-cis-dihydroxyligustilide (7) Conclusion Bis (2-ethylhexyl) phthalate and dibutylphthalate were obtained from Angelica sinensis for the first time.展开更多
Background Digoxin remains widely used today despite its narrow therapeutic index and toxicity. The objective of this study was to investigate the percentage of inappropriate use of digoxin and long-term outcomes of e...Background Digoxin remains widely used today despite its narrow therapeutic index and toxicity. The objective of this study was to investigate the percentage of inappropriate use of digoxin and long-term outcomes of elderly patients hospitalized for digoxin toxicity. Methods The study included 99 consecutive patients hospitalized for digoxin toxicity. The other study criteria for the inappropriate use of digoxin was regarded if participants having depressed left ventricular systolic function （ejection fraction 〈 45%） who were not on optimal medical therapy including beta-blocker and angiotensin-converting-enzyme inhibitor therapy or if participants having permanent AF who were not on optimal beta-blocker therapy. Results Appropriate digoxin usage was confirmed in 33 of patients in spite of its narrow therapeutic index. A total of 16 of 99 patients died, with a mean follow-up time of 22.1 ± 10.3 months. Conclusions Contrary to popular belief, the rate of inappropriate digoxin usage remains high. On account of its narrow therapeutic index and toxicity, digoxin should be used more carefully according to the current evidence and guidelines.展开更多
Most plant growth regulators available are synthesized and tend to be dangerous if used inappropriately. Emistim CAS is a natural plant growth regulator, with less side-effect. The research performed an assessment on ...Most plant growth regulators available are synthesized and tend to be dangerous if used inappropriately. Emistim CAS is a natural plant growth regulator, with less side-effect. The research performed an assessment on Emistim CAS application in watermelon cultivation in a greenhouse. The results showed that 0.11% Emistim CAS increased reducing sugar by 15.49%, soluble solid by 13.7%, Vc content by 3.72%, titratable acid by 18.1%, and yield per hectare by 18.01%, so that watermelon quality and yield were both improved. Emistim CAS can be widely promoted in watermelon cultivation in future.展开更多
The paper took Wuhai District as an example, bases on the contrast be-tween the land use condition in 2005 and 2010, and applied the ecological green equivalence to establish a mathematic model of ecological optimizat...The paper took Wuhai District as an example, bases on the contrast be-tween the land use condition in 2005 and 2010, and applied the ecological green equivalence to establish a mathematic model of ecological optimization of land use structure, to establish the ecology green equivalent mathematical model and survey the value of region green equivalent, and then assess the ecological environment situation. The results show that the ecological environment has been deteriorated in Wuhai from 2005 to 2010, so the ecological environment was poor. In order to in-crease eco-efficiency of land use, garden, urban green space and woodland area should be raised in the optimization program.展开更多
Alarming local oil industry This year,the purchasing price of rapeseed from China＇s major production bases has gone up due to the decline in planting area of oil-bearing crops.
In order to probe into the problems that English learners meet in the second language acquisition （SLA）, this thesis intends to evaluate students＇ performance in the process of studying SAMBET course in Beijing Inf...In order to probe into the problems that English learners meet in the second language acquisition （SLA）, this thesis intends to evaluate students＇ performance in the process of studying SAMBET course in Beijing Information Science and Technology University （BISTU）, through identifying and analyzing the errors and improper uses of English, and exploring the reasons that account for them by means of SLA analysis devices. The author has talked about the errors and improper uses that are made by test attendants of SAMBET course. The analysis and exploration on these errors and improper uses illustrate that they occur owing to various implied reasons, e.g., the influence of Ll, ignorance of grammatical rules, carelessness, outside pressure, and attitude, aptitude, and confidence of individual learner, etc展开更多
In the extremely competitive world of business and manufacturing, solid waste disposal is often overlooked. There are associated costs with excess raw materials, scrap parts, poor use of resources, and outdated materi...In the extremely competitive world of business and manufacturing, solid waste disposal is often overlooked. There are associated costs with excess raw materials, scrap parts, poor use of resources, and outdated materials. All of these contribute to a company＇s solid waste stream, and must be addressed when calculating the costs of disposal. In addition, it is not ecologically or economically sound decision to allow recyclables to enter landfills. Waste analysis and minimization can be very financially advantageous to companies and should be evaluated. This paper discusses a methodology and a case study that uses a solid waste audit process with a focus on urethane recycling.展开更多
In coping with the global financial crisis, all levels of the Chinese government and foreign trade firms have not only created new practices but have also changed their goal from transforming the growth pattern of for...In coping with the global financial crisis, all levels of the Chinese government and foreign trade firms have not only created new practices but have also changed their goal from transforming the growth pattern of foreign trade to transforming the development pattern of joreign trade. China＇s experience shows that economic instruments such as Net Barter Terms of Trade （NBTT） and the smile curve theory have limitations when it comes to interpreting foreign trade. If used improperly, scientific theories often lead to.fallacies. Transjbrming the development pattern of China＇s .foreign trade requires the following changes： national income distribution, foreign trade competition, market exploration, and resource utilization. We advise that competent authorities create a reasonable and operational system of assessment indicators.展开更多
基金The Science and Technology Project of Jiangsu Provincial Communications Department(No.7621000078)
文摘To investigate the cost-effectiveness of different maintenance treatments of highways in Jiangsu Province, the historical pavement maintenance records, traffic load information and pavement performance data in the pavement management system （PMS） are recorded and analyzed. Compared with the growth model, the linear model, the logarithm model and the exponential model, the cubic model has higher regression accuracy R2 and it can capture the sigmoid shape of the deterioration curve. So it is selected to simulate the pavement rotting development. The benefit over cost ratio is calculated to quantify the treatment cost- effectiveness. The analysis results show that thin hot mix asphalt （HMA） overlays and micro surfacing are more cost- effective than the. other two treatments on light and moderate traffic roads. Hot in-place recycling and thick HMA overlays have much longer service lives and greater cost-effectiveness under heavy or extra heavy traffic.
文摘Aim To investigate the active constituents responsible for thepharmacological activities of Angelica sinensis (Oliv) Diels. Methods Chromatography was used toisolate chemical components, and spectroscopy was used to identify their structures. Results Sevencompounds were isolated and their structures were identified as ferulic acid (1), conife-rylferukte(2) , bis (2-ethylhexyl) phthalate (3), dibutyl phthalate (4), lignoceric acid (5), palmitic acid(6), and Z-6, 7-cis-dihydroxyligustilide (7) Conclusion Bis (2-ethylhexyl) phthalate and dibutylphthalate were obtained from Angelica sinensis for the first time.
文摘Background Digoxin remains widely used today despite its narrow therapeutic index and toxicity. The objective of this study was to investigate the percentage of inappropriate use of digoxin and long-term outcomes of elderly patients hospitalized for digoxin toxicity. Methods The study included 99 consecutive patients hospitalized for digoxin toxicity. The other study criteria for the inappropriate use of digoxin was regarded if participants having depressed left ventricular systolic function （ejection fraction 〈 45%） who were not on optimal medical therapy including beta-blocker and angiotensin-converting-enzyme inhibitor therapy or if participants having permanent AF who were not on optimal beta-blocker therapy. Results Appropriate digoxin usage was confirmed in 33 of patients in spite of its narrow therapeutic index. A total of 16 of 99 patients died, with a mean follow-up time of 22.1 ± 10.3 months. Conclusions Contrary to popular belief, the rate of inappropriate digoxin usage remains high. On account of its narrow therapeutic index and toxicity, digoxin should be used more carefully according to the current evidence and guidelines.
基金Supported by the Vegetable Innovation Team Project of Shandong Modern Agricultural Industry Technology System(SDAIT-05-09)Shandong Major Agricultural Technology Innovation Projects in 2014Shandong Province Agricultural Promotion Program in 2015
文摘Most plant growth regulators available are synthesized and tend to be dangerous if used inappropriately. Emistim CAS is a natural plant growth regulator, with less side-effect. The research performed an assessment on Emistim CAS application in watermelon cultivation in a greenhouse. The results showed that 0.11% Emistim CAS increased reducing sugar by 15.49%, soluble solid by 13.7%, Vc content by 3.72%, titratable acid by 18.1%, and yield per hectare by 18.01%, so that watermelon quality and yield were both improved. Emistim CAS can be widely promoted in watermelon cultivation in future.
文摘The paper took Wuhai District as an example, bases on the contrast be-tween the land use condition in 2005 and 2010, and applied the ecological green equivalence to establish a mathematic model of ecological optimization of land use structure, to establish the ecology green equivalent mathematical model and survey the value of region green equivalent, and then assess the ecological environment situation. The results show that the ecological environment has been deteriorated in Wuhai from 2005 to 2010, so the ecological environment was poor. In order to in-crease eco-efficiency of land use, garden, urban green space and woodland area should be raised in the optimization program.
文摘Alarming local oil industry This year,the purchasing price of rapeseed from China＇s major production bases has gone up due to the decline in planting area of oil-bearing crops.
文摘In order to probe into the problems that English learners meet in the second language acquisition （SLA）, this thesis intends to evaluate students＇ performance in the process of studying SAMBET course in Beijing Information Science and Technology University （BISTU）, through identifying and analyzing the errors and improper uses of English, and exploring the reasons that account for them by means of SLA analysis devices. The author has talked about the errors and improper uses that are made by test attendants of SAMBET course. The analysis and exploration on these errors and improper uses illustrate that they occur owing to various implied reasons, e.g., the influence of Ll, ignorance of grammatical rules, carelessness, outside pressure, and attitude, aptitude, and confidence of individual learner, etc
文摘In the extremely competitive world of business and manufacturing, solid waste disposal is often overlooked. There are associated costs with excess raw materials, scrap parts, poor use of resources, and outdated materials. All of these contribute to a company＇s solid waste stream, and must be addressed when calculating the costs of disposal. In addition, it is not ecologically or economically sound decision to allow recyclables to enter landfills. Waste analysis and minimization can be very financially advantageous to companies and should be evaluated. This paper discusses a methodology and a case study that uses a solid waste audit process with a focus on urethane recycling.
文摘In coping with the global financial crisis, all levels of the Chinese government and foreign trade firms have not only created new practices but have also changed their goal from transforming the growth pattern of foreign trade to transforming the development pattern of joreign trade. China＇s experience shows that economic instruments such as Net Barter Terms of Trade （NBTT） and the smile curve theory have limitations when it comes to interpreting foreign trade. If used improperly, scientific theories often lead to.fallacies. Transjbrming the development pattern of China＇s .foreign trade requires the following changes： national income distribution, foreign trade competition, market exploration, and resource utilization. We advise that competent authorities create a reasonable and operational system of assessment indicators.
