Control Effect of Bio-guide Wasp Virus Missile on Ostrinia furnacalis and Its Benefits for Maize Production in Nanchong City

In order to promote ＂green plant protection＂, reduce the administration dosage and residue of pesticides and control cost of environment pollution, and improve maize production, quality and agricultural ecological environment safety. In this study, the control effect and benefit of bio-guide wasp virus missile（BGWVM） on Ostrinia furnacalis in Nanchong City was investigated by using insect light traps and combined method of field investigation and experimental demonstration. According to the results, applying 30-37 pairs of BGWVM per hectare exhibited an average control efficiency of 78.0%, and the control cost was 139.50-172.50 CNY/hm2, which was reduced by 142.50-168.00 CNY/hm^2 compared with conventional chemical control. Average maize yield in BGWVM demonstration plot was 817.8 kg/hm2 higher and improved by 11.0% compared with blank control plot. The output value was improved by 1 799.16 CNY/hm^2 and the revenue increased by 1 941.66-1 967.16CNY/hm2. During 2003-2014, the cumulative demonstration and popularization area of BGWVM technique in Nanchong City had reached 24 507.33 hm^2, and the cumulative yield increment reached 20.042 1 million kg. BGWVM application improved total output value by 44.092 6 million CNY and saved control cost by 3.492 3-4.117 2 million CNY, thus increasing the revenue by 47.584 9-48.209 8 million CNY. BGWVM application reduced 551.41 t of 5% dimehypo GG or 12.87 t of 90%monosultap WP. In addition, BGWVM technique is simple to use, labor-saving and safe for human, animals, environment and crops, with significant economic, ecological and social benefits and without any side effect, which has become an ideal substitute for controlling O. furnacalis and reducing chemical pesticides in organic agriculture industry, modern agriculture industry, production of green and pollution-free agricultural products and IBM prevention and control demonstration gardens.

Control Efficiency of Four Biological Pesticides against Pieris rapae Linne and Their Impacts on Yield and Benefit of Chinese Cabbage

[ Objective] The paper was to screen out ideal biological pesticides, in order to provide guidance for pollution-free control against Pieris rapae Linne. [Method] Taking Chinese cabbage variety Taiyuan Erqing as the test material, the field control efficiencies of four pesticides including PrGV · Bt WP 1 000 times dilution, NPV · Bt SC 750 times dilution, 0.5% azadirachtin EC 750 times dilution, and 0.3% matrine AS 500 times dilution against P. rapae were studied, and their impacts on yield and planting benefits of Chinese cabbage were also determined. Using foliar spray method, the pesticides were sprayed for the first time when the second or third instar larvae of P. rapae first occurred in fields, and sprayed for the second time with the interval of 15 d. The fields sprayed with beta-cypermethrin EC （organic chemical pesticide） and water were set as control. [ Result] NPV · Bt SC 750 times dilution had the best effect after spraying for two times： the control efficiency against P. rapae at 15 d after spraying was 90.11% ; the damage rate of Chinese cabbage was only 0.21%, while the commodity rate reached 100% ; compared with chemical pesticide spraying, the commodity yield （177 262.5 kg/hm2 ） and the income after deducting spraying cost （48 858.5 yuan/hm2 ） were increased by 14.7% and 13.75%, respectively. [ Conclusion] Although biological pesticides are more expensive, they have long persistence and good control effect, resulting in green and safe Chinese cabbage with high commodity rate and yield, and higher eventual economic benefit after deducting spraying cost.

Protective effects of physical activity against health risks associated with type 1 diabetes: “Health benefits outweigh the risks”

The magnitude of diabetes mellitus(DM)has increased in recent decades,where the number of cases and the proportion of the disease have been gradually increasing over the past few decades.The chronic complications of DM affect many organ systems and account for the majority of morbidity and mortality associated with the disease.The prevalence of type 1 DM(T1DM)is increasing globally,and it has a very significant burden on countries and at an individual level.T1DM is a chronic illness that requires ongoing medical care and patient self-management to prevent complications.This study aims to discuss the health benefits of physical activity(PA)in T1DM patients.The present review article was performed following a comprehensive literature search.The search was conducted using the following electronic databases:“Cochrane Library”,Web of Science,PubMed,HINARI,EMBASE,Google for grey literature,Scopus,African journals Online,and Google Scholar for articles published up to June 21,2021.The present review focused on the effects of PA on many outcomes such as blood glucose(BG)control,physical fitness,endothelial function,insulin sensitivity,well-being,the body defense system,blood lipid profile,insulin resistance,cardiovascular diseases(CVDs),insulin requirements,blood pressure(BP),and mortality.It was found that many studies recommended the use of PA for the effective management of T1DM.PA is a component of comprehensive lifestyle modifications,which is a significant approach for the management of T1DM.It provides several health benefits,such as improving BG control,physical fitness,endothelial function,insulin sensitivity,well-being,and the body defense system.Besides this,it reduces the blood lipid profile,insulin resistance,CVDs,insulin requirements,BP,and mortality.Overall,PA has significant and essential protective effects against the health risks associated with T1DM.Even though PA has several health benefits for patients with T1DM,these patients are not well engaged in PA due to barriers such as a fear of exercise-induced hypoglycemia in particular.However,several effective strategies have been identified to control exercise-induced hypoglycemia in these patients.Finally,the present review concludes that PA should be recommended for the management of patients with T1DM due to its significant health benefits and protective effects against associated health risks. Italso provides suggestions for the future direction of research in this field.

Eco-economic control mode and benefit analysis of rock desertification region in Huajiang Karst Valley of Guizhou Province

It is difficult to afforest in rock desertification region and is the key area for eco-environment treatment. To speed up the comprehensive treatment of rock desertification, several anti-rock desertification modes implemented in Dingtan region, located on the right bank of Huajiang Grand Valley in Beipanjiang Town, are introduced as examples. This paper first analyzes the natural and environmental conditions, the development of rock desertification in the Dingtan region, then the detail of the treatment modes, such as “Chinese wingleaf pricklyash – pig breeding – marsh gas” (Mode One), “amomum villosum – pig breeding – marsh gas” mode (Mode Two), “traditional grain and economic crop (corn, peanut) – amomum villosum or Chinese wingleaf pricklyash” (Mode Three), etc. The eco-economic effects, potential and shortcomings of the above mentioned modes are analyzed and compared. It is proved that Mode One and Mode Two are of good economic effect, but Mode Three of better ecological effect. Solutions to the shortcomings of the modes are also put forward.

Benefit Evaluation Model of Small Watershed Control Based on Projection Pursuit

A projection pursuit model is presented in this paper for comprehensive evaluation of benefits of small watershed control.By using the model,small watershed control samples with many benefit evaluation indexes can be synthesized projective values with one dimension.The samples can be naturally evaluated according to the projective values.The parameters of the model is optimized by using real coding beased accelerating genetic aglrothm,which overcomes the shortcomings of large computation amount and difficulty of computer programming in traditional projection prusuit methods,and provides a new way for wide applications of projection pursuit technique to different evaluation problems in agricultural systems engineering.

Have the Private Benefits in Italian Firms Decreased？

The topic of the paper is the estimate of the benefit of control, according to the Barclay and Holderness method. The reference system of this research is Italy, given that the empirical evidence of the past which had underlined private benefits particularly high among Italian companies and the reference period is 1999-2007. The idea of this research is to demonstrate that, since the Legislative Decree No. 58 of February 24, 1998 （Consolidated Law on Finance, henceforth Consolidated Law）, which has significantly changed the protection of minority shareholders, in Italian, the intensity of private benefits has on average declined sharply. To this end, considering the results of the empirical researches on periods pre-1998 and at the turn of the Consolidated Law, the paper provides evidence that the improvement of minority shareholder protection already shown by these researches is further accentuated over the years, because of the effects that the new regulatory framework has produced. In fact, the basic assumption is that the important laws, as Consolidate Law, require several years to produce the desired results in full. This idea is supported by the findings of research that show an average percentage of private benefits dropped to five percent of the capital. Hence, the investigation is extended to the demonstration of comparability of this estimation with other estimations quoted in literature, verifying the statistical significance of the correlations between the measures estimated and the variables considered as determinants in much of the literature.

Private Benefits of Politicians and Delayed Privatization

The aim of this paper is to consider the problem of politicians＇ control of state-owned enterprises in a transforming economy. The control of a company can be treated as a choice of a strategy pursued by this company. In order to present politicians＇ influence on a company＇s strategy, we consider the case of a firm controlled by the State Treasury （i.e., by politicians） and a company outside politicians＇ control, both functioning in a favorable and an unfavorable state of the economy. We propose the option-to-switch valuation model as a method of measuring politicians＇ private benefits of control. We illustrate the considerations using data concerning Poland＇s printing industry.

Study on Negative Effect Analysis of Mechanized Shattering and Returning for Sugarcane Leaf and its Control Technology

Soil structure and nutrient ingredient before and after shattering and returning sugarcane leaf as well as its technologies and methods were comparatively analyzed in this study to discuss the main reasons primarily,while the controlling technologies were proposed by combining cultivation,management and technical measures.

Combustion mechanism and control approaches of underground coal fires:a review

With the large-scale mining of coal resources,the huge economic losses and environmental problems caused by underground coal fires have become increasingly prominent,and the research on the status quo and response strategies of underground coal fires is of great significance to accelerate the green prevention and control of coal fires,energy conservation and emission reduction.In this paper,we summarized and sorted out the research status of underground coal fires,focused on the theoretical and technical issues such as underground coal fire combustion mechanism,multiphysics coupling effect of coal fire combustion,fire prevention and extinguishing technology for underground coal fires,and beneficial utilization technology,and described the latest research progress of the prevention and control for underground coal fire hazards.Finally,the key research problems in the field of underground coal fire hazards prevention and control were proposed in the direction of the basic theory,technology research,comprehensive management and utilization,with a view to providing ideas and solutions for the management of underground coal fires.

Benefit Assessment of Forest Function in Reducing Soil Erosion and Nutrient Loss in Anji County of Taihu Lake Basin

The non-point source pollution arising from soil erosion is one of the main reasons for the deterioration of the water quality of the Taihu Lake Basin. Forest plays an important role in controlling soil erosion and reducing nutrient loss. Based on the survey data on forest resources in Anji County, we estimate the amount of soil erosion and nutrient loss of nitrogen and phosphorus reduced by forest, using soil erosion modulus method and soil nutrient content. In accordance with the degradation coefficient of pollutant and regional compensation standards of environmental resources, we assess the ecological benefits of forest function in reducing nutrient loss of nitrogen and phosphorus in Anji County. The results show that the forest in Anji County can reduce the soil erosion amount at 1.51 million t annually on the average, so as to control the nutrient loss of 1 409 t of total nitrogen and 577 t of total phosphorus in soil, equivalent to annually avoiding the flow of 824 t of total nitrogen and 410 t of total phosphorus into river water; this ecological service function can make forests in Anji County get 92.55 million yuan of ecological compensation funds (about 688 yuan/hm2·a), equivalent to 15 times of the current ecological compensation standard (47 yuan/hm2). The study reveals the importance of forest function in controlling soil erosion and nutrient loss in the upper reaches of Taihu Lake Basin to water environment protection in the basin, conducive to carrying out pollution control and protection work of the water environment in the basin.

Effectiveness of Automatic Control over Flash Distillation Kettle for Liquid-Phase Bulk Polymerization of Propylene

Automatic control over flash distillation section at SINOPEC Cangzhou Refinery has been realized, resulting in saving of propylene feedstock and emission reduction to harvest significant economic benefits.

Treatment of Atherosclerotic Disease of the Femoral Artery: Randomized Controlled Trials and Meta-Analyses. Should You Be Sceptical?

A narrative review of the data provided by Randomised Controlled clinical trials and meta-analyses was undertaken to assess how much reliance a clinician could place on these in selecting a treatment for patients with disease of the Femoral artery. An attempt was made to detect and review every clinical trial and meta-analysis published on treatments relating to disease of the femoral artery but not relating to drug treatment. Disease of the femoral artery in >65 years age group occurs in approximately 20% of the population but symptomatology was present in 40%. In almost all trials the predominant (>90%) indication for treatment was intermittent claudication. In this setting, clinical benefit was limited and did not extend beyond 12 months. Mortality, from co-morbidities was high. The Basil Trial was the only one to examine intervention for critical limb ischemia. The results for Bypass surgery and Percutaneous transarterial balloon angioplasty (PTA) were equivalent. There is little evidence to support the use of PTA or stenting other than in the treatment of patients with critical limb ischemia.

Problems and Countermeasures of Internal Control Management in High-tech Enterprises

The wave of the socialist market economy has continually invaded,which has already caused a serious impact on the survival of many enterprises in China at this stage.In order to obtain development,traditional enterprises must follow the trend of the times to carry out their own reform and progress.For many high-tech enterprises,the most important issue is how to achieve internal control management,with rationalization means to gradually promote the corresponding work and economic benefits of enterprises,not only to save time,but also to improve the corresponding work efficiency,moreover,it is necessary to be able to promote the establishment of a relatively complete internal control management system in the actual work process of high-tech enterprises,in order to solve and prevent some problems that have emerged or need to be emerged.

An Investigation into the Life Cycle Cost of a Typical Computer Numerical Control Machine

This paper relates to a typical computer numerical control (CNC) machine, model FDXNC 128, and analyzes the payoff period quantitatively and forecasts the future maintenance cost and the evaluation of the economic benefit by using Life Cycle Cost (LCC) method and grey theory. The discussion shows conclusions that are beneficial to the production, management, and decision making of the enterprise.

Water pollution control planning for the Taizi River watershed

Water pollution control planning for the Taizi River watershed,a typical Chinese case study,is presented in this paper. Based on comprehensive analysis.water quality in the watershed was assessed and predicated;water quality models for the river and reservoir were built;and function of water bodies and environmental assimilative capacity were determined ;and then the planning for industrial pollution sources and concentrated sewage treatment were made respectively.

Optimal Management of the Pension Contribution Rate Using the H∞-Control Theory

In this paper, we construct a general model for a pension fund when there are time delays in the valuation process. Actually, we use the standard structure of the basic reserve equation in order to rebuild a more sophisticated approach based on the theory of H∞ control. Our model evaluates the incomplete information from the delayed fund valuations—due to the oscillatory pattern for benefit claims and investment experience of the past years—within the context of uncertainty additionally to the randomness which certainly exists. So, we construct estimations for the optimal proposed contribution rates based on a feedback mechanism which is a robust stabilization controller, using typical linear matrix inequalities. Finally, a numerical application is fully investigated to obtain further insight into the problem.

公司控制权的规制变革与平衡进路

现代公司法高度重视股权保护,但股权保护之立法目的需要通过规制控制权的规则设计来达成。公司控制关系的普遍存在表明“控制性利益”可以构成一种隐性激励,控制关系对公司治理具有双面影响。传统立法对“控制性利益”谋取行为采取“强制禁止+事后追责”的规制策略是低效的,特别是欠缺积极的引导性规则,呈现出明显的制度失衡。新《公司法》展现出对公司控制进行平衡规制的取向,以立法目的之扩展调适公司法的制度功能,以股权配置多元化满足控制人的控制需求,以灵活的组织机构提升公司治理的实效性,以周延的问责机制保障控制行为的妥当性。未来应当进一步将控制从事实转变为权利,完善其识别规则与权能体系,明晰司法介入商业的限度以实现审慎科责,并注重运用程序性引导的规制策略。

国外重点油公司风险勘探项目实施成效对标与启示

在全球前沿领域实施风险勘探获取丰厚的投资回报是国际油公司长期坚持的勘探战略,不同油公司对风险勘探的重视程度和实施成效差异较大。为了研究国外油公司风险勘探战略、风险偏好和实施效果,指导中国油公司海外油气勘探工作,利用油公司年报、公开信息和商业数据库,对2005—2022年间8家国外油公司的风险勘探项目进行分析,构建了一套项目实施成效评价指标体系,包括勘探效益、勘探投入、项目规模和风险控制4个一级指标及19个二级单项指标。通过单项指标和综合指标对标,分析对标公司在风险勘探方面的成效与经验。研究发现,各油公司在单项指标上差异显著,这与油公司的勘探战略和风险偏好有极大的关系。埃克森美孚公司综合成效评价指数最高,而碧辟因作业者风险项目少且缺乏重大商业发现,评价指数较低。基于研究结果,针对我国油公司海外油气风险勘探提出了5点启示,包括注重勘探效益、积极担任风险勘探项目作业者、维持适当风险勘探规模和投入、适当控制项目权益和制定符合公司特点的风险勘探策略。这些建议对于指导我国油公司制定海外油气勘探战略和风险勘探策略具有重要的现实意义和长远的战略价值。