Comparing the ion content,biomass,soil p H,total salt quantity etc. of three plant species in the higher salt condition of 3. 5% Na Cl solution,Suaeda glauca,Sedum spetabiles and Puccinellia tenuifolia showed stronger salt tolerance in salt stress environment in growth process. Among them,Suaeda glauca displayed a stronger ability to collect Na+and K+in the plant while it produced a large number of exchangeable sodium,which could aggravate soil alkalization degree. Sedum spetabiles has a good effect on reducing soil salinization by reducing the total salt content and exchangeable sodium ion content in soil in growth process. Puccinellia tenuifolia resisted the salt stress environment by rapidly increasing the soluble sugar content to lower the osmotic potential and eased the body of salt concentration. It can accumulate higher dry matter in the plant as well as maintain a relatively stable water content. Therefore,the 3 species are excellent salt tolerant plants,which can be developed and cultivated.
To suppress the idling loss of vehicular hydraulic retarder,the suppression effect of spoiler on the idling loss was investigated by 3-D flow field numerical simulation. Based on the arrangement of spoilers,the periodic calculation models with and without spoiler installed in the stator were established to reduce the cost of simulation,and the accuracy of numerical models was verified in idling condition and oil-filling condition respectively. At different rotating speed,the calculation of idling loss was further conducted for two periodic models. The braking power applied by air was calculated in idle condition,and the distribution of velocity field and pressure field were also obtained. Then the effect of spoiler disturbing air flow and reducing idling loss was comparatively analyzed. The result shows that the spoiler can impede the air circulation flow effectively,the idling loss of the hydraulic retarder can be reduced to 48. 4% at the rotary speed of 3 400 r / min,and the vehicle power utilization can be enhanced efficiently.
Interpersonal function is one of the three metafunctions of Systemic Functional Linguistics. Advertisements, as an art in daily life, are a fundamental method used by sellers for promotion. Therefore, being a link between the advertisers and the customers, languages in advertisements have interpersonal function. This paper analyzes the function in terms of mood for the purpose of helping customers identify the goods as well as the service, providing methods for advertisers to expand their promotions, at the same time, also giving some implications to English writing courses.
It is explained in simple language that how to use the greedy strategy to solve the multi-machine scheduling problem often encountered in the production.The proper dispatch of tasks will use machines in the least number,and the algorithm is implemented using C++ programming.Practically,GA is of simplicity and effectiveness,which is the optimal solution of the similar problems.
Basic process of virtual scene roaming by 3ds Max is given and detailed skills,such as three- dimensional modeling,materials and textures design,light processing,and so on are proposed,which illustrated by the case of Long- shan Campus of Anqing Teachers College. In addition,three- dimensional models are completed by 3ds Max and virtual campus architecture animation is realized by the Premiere and other kinds of software.
To study the efficacy and safety of nabumetone(NAB)in patients with rheumatoid arthritis (RA), radomized,controlled, double-blind clinical trials of NAB versus naproxen (NAP)were performed in three hospital under organization of Base of Clinical Pharmacology,Anhui Medical University.The results indicated the total efficacy rates of NAB and NAP were 66.67% and 58.33% respectively after four weeks'treatment. The incidences of adverse effects were 11.67% and 23.33% respectively.These suggest the NAB had a similar efficacy with NAP in the treatment of patients with RA, but its adverse effects were significantly lower than that of NAP.
Objective To assess the scientific research ability in hospitals of Sichuan Province by constructing a complete,scientific and feasible scientific information collection and assessment system. Methods The information assessment system was established by literature and expert conferences review,questionnaire investigation,and using Delphi method and related statistical methods. The confidence and efficiency of the established information assessment system were analyzed in 54 hospitals randomly sampled from Sichuan Province. Results The confidence and efficiency of the established information assessment system were rather good. Conclusion The established scientific information collection and assessment system in hospitals of Sichuan Province are quite practical,scientific and operable,thus remedying the defect of statistical index and related data in health statistics reporting forms about the scientific research ability of medical institutions.
Objective To clarify the association between the glycogene ST6 GAL family and hepatoma metastasis by studying its differential expression in human hepatocarcinoma cell lines,MHCC97-H with high metastatic potential and MHCC97-L with low metastatic potential,so as to confirm novel target of hepatoma metastasis and anti-tumor therapy. Methods Real-time PCR and Western Blot were used for the analysis of differential expression of glycogene ST6 GAL family in MHCC97-H and MHCC97-L human hepatocarcinoma cell lines; RNA interference approach was used for silencing the glycogene which was expressed differently to detect the invasive ability in vitro and tumorigenicity in vivo in MHCC97-H cells. Results The expression of glycogene ST6GAL1 was different in MHCC97-H cells,as compared to that in MHCC97-L cells,while the expression of ST6GAL2 had no difference in between the two cell lines. Downregulation of ST6GAL1 expression inhibited the invasion and tumorigenicity of MHCC97-H cells both in vitro and in vivo. Conclusion The differential expression of glycogene ST6GAL1 in human hepatocarcinoma cell lines correlates with tumor invasion and tumorigenicity,which has significant implications for the development of treatment strategies.
China's rapid economic growth made a lot of poor people out of poverty but also made great pressure in international energy markets and ecological environment in the same time since China's reform and opening-up policies.China became the world's largest carbon dioxide emissions country in 2006 because of a large number of consumption of fossil fuels.Chinese government began to take positive actions to save energy and control carbon emissions under the increasing pressure of energy saving and emission mitigation.However,green and low carbon transformation may lead to some damages to economic growth and reduce social welfare.How to achieve the goal of energy saving and emission mitigation without economic growth and welfare loss?Different from the relevant and existing domestic literature,this paper based on RD induced technological change theory.After using dynamic computable general equilibrium technology,this paper simulated how carbon dioxide emission constraints and RD subsidies policies impacted on the energy-economic-environmental general equilibrium of macro and industrial agents.After comparing these simulation results under different scenarios with benchmark scenario which based on Copenhagen commitment made by Chinese government,some important results were achieved.Firstly,carbon emission constraints could promote clean energy substituting fossil fuels by reducing the consumption of fossil fuels.However,implementing carbon emission constraints could do harm to economic growth.Secondly,combined policies including both carbon emission constraints and RD subsidies policies could ensure that economic agent can achieve the energy-saving and emission-limiting goal without much economic growth loss.Furthermore,RD subsidies policies could promote knowledge accumulation so have a positive effect on improving energy efficiency.Thirdly,the effects of RD subsidies policies would be discounted without considering industrial heterogeneity including factors input structure and elasticity of substitution.That is,if we did not understand the heterogeneity among different industry clearly,some negative effects about RD subsidies policies will be achieved such as output loss and excessive emission compared to baseline scenario.This paper called these negative effects as consequences of excessive subsidies.Following Suggestions and enlightenments could be drawn through the conclusions of this paper.Firstly,improving and enhancing China's current clean energy efficiency would help balance the dilemma between energy saving and emission mitigation and economic growth.Because of its characters such as intermittent and high cost,it is difficult to make clean energy(especially the renewable energy) large-scale application.Although the scarcity of fossil fuels will gradually increase the proportion of clean energy in the long term,but we should actively seek new technology and new method to improve and enhance the efficiency of the clean energy in the short and medium term.Secondly,Chinese government made the goal of energy saving and emission mitigation to some extent by forced out of energy-intensive backward production capacity.In fact,administrative means not only solved this problem thoroughly but also did harm to economic growth.If implemented RD subsidies policies,the negative impact from administrative means could be change.What's more,RD investment could push production sectors transform from energy using and factors accumulating to knowledge using and finally realize the economic growth transformation.Thirdly,If Chinese government want to realize the dual goals of energy saving and emission mitigation and economic growth,it need at least two kinds of policy tools.In fact,the set of subsidies rate could be took as a balance between the knowledge-lead output increase and the tax-distortion-lead output decrease.So,after mixing the different emission constraints and subsidies policies,a more flexible policy toolkit can be achieved and help the government to ensure the realization of the dual goals above.Fourthly,the heterogeneity between different production sectors such as elasticity of substitution and nested structure of function may lead to mixed sectors performance under the unification subsidies policies.So,if the government could be more careful about the heterogeneity when policies implemented,then the cost of policy implementation can be reduced significantly.However,after reviewed the domestic and foreign literature about CGE,we found that the choice of nested structure and calibration of elasticity of substitution are almost filled with subjectivity and arbitrariness.These subjectivity and arbitrariness make CGE cause criticism.So,how to indentify the nested structure of function and calibrate the elasticity of substitution become the key of whether the CGE simulation is scientific and the very important issue that CGE researchers very concerned.
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