The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Enclosure is one of the most important measures used for soil and water conservation and has been implemented since the 1970s in Sichuan Basin, China. To understand the impact of enclosure on soil and water loss, soil loss and runoff were monitored in erosion plots on steep slopeland in a hilly area of the Sichuan Basin in the period 1983-2007 under three treatment regimens: enclosure, nonenclosure,...
Based on the purpose that the effective use and protection of environmental resources, studying the evolution trends of packaging and influencing factors from the life experience, discussing the use beyond the basic function and value extension, the idea of “to make the best use of everything” is offered as the goal to improve the packaging effectiveness of the resource consumption, combined with...
The environmental performance, economic performance, social performance, and the concept will be described systematically in this paper, a case study of the Xiao Nanhai cement factory, the study of performance improving and cost control is of great significance. It worth further research.
Optical reflectometry is applied as a tool for studying single and simultaneous adsorption of a carbohydrate, a nonionic surfactant, and a protein, For the nonionic surfactant poly(ethylene oxide) alkyl ether on a silica surface the adsorption process is fast and reversible, and the maximum adsorbed amount was 2.45 mg·m-2. Also, the effect of pH on the adsorption of chitosan on silica, and its interaction...
The information industry can stimulate economic growth and create enormous social wealth. This paper analysis the integral part of China's information industry. At the same time, this paper researches its development status. Combining the characteristics of information industry, we find out the inadequacies of the information industrial policy. At last, this paper provides kinds of policy to promote...
Wind erosion is an important environmental problem, thus researchers have used many methods to study it. The methods that have been used mainly involved theoretical analysis, experimental measurements under artificial conditions (e.g., in wind tunnels), and numerical simulations using a range of models. However, the results of these studies differ, and are not always satisfactory, particularly in...
By analyzing development and utilization of water resources in Fuyang city, it is pointed out that there is a serious water shortage problem. According to the existing supply and demand imbalance and water quality, two solutions are put forward: the development and implementation of wastewater reclamation and dual water supply, which has strong feasibility and produce great practical significance...
Most traditional mobile robots have always had problems when working in obstacle-dense environments and rough terrain. Inspired by the locomotion mode of locust, this paper presents the design of a novel jumping robot. Rationality of the design and the performance of the jumping mechanism have been verified by strength analysis and kinematic modeling.
Paper mainly introduces a kind of design method of building an on-line intelligent assistant teaching system based on dynamic web language program tool. This system uses ASP language as developing-designing tools, and adopts software of Dreamwaver MX, etc in B/S structure, which completing web platform system building. In this paper, we introduce design method and realization process of system parts...
Climate change has become a major international environmental problems, which has threatened to human survival and development. One of the fundamental measures to take actions to climate change is to control the anthropogenic emissions of greenhouse gases. Taking actions to climate change involves political, economic, technical, legal and many other fields, and law is a code of conduct, which is formulated...
A bacterium(strain yc02) was isolated from environment, which could degrade polyvinyl alcohol. It was preliminary identified as the genus of Pseudomonas sp. The further degrading characterization research showed that the optimal degradation temperature, culture time, rotary speed and the initial pH of fermentation medium were 25°C, 60 h, 180 rpm and 7.5 respectively, the ratio of degradation reached...
Conventional coagulation is not an effective treatment method to remove natural organic matter (NOM) and ammonia nitrogen (NH3-N) in water at low temperature. For this type of water, enhanced coagulation is currently proposed as one of the feasible treatment methods and is implemented by coagulant optimization based on raw water characteristics and the coagulant aids. NOM and NH3-N removal from Huaihe...
With the technology of Remote Sensing (abbr. RS) and Geographic Information System (abbr. GIS), We had gained the wetland landscape spatial database and attribute database of Hubei province from land-use maps, TM images, we have an investigation of the condition of wetland resources in Hubei Province. According to The results of the remote sensing survey and comprehensive analysis, it is showed that,...
To minimize the effects of potable water accidental contamination, efficient determination of contamination sources plays a critical role. In this paper, authors apply simulation-optimization method to backward tracking contamination sources in laboratory water supply system. By introducing sodium hypochlorite solution (a substitute for contaminants) from candidate intrusion points into the system,...
The water supply pipe network security issue is the safety of drinking water problem of urban residents faced the basic problem, in order to quantitatively study the safety of urban water supply pipe network level. Using the improved AHP built determination matrix and determined the weight of each index, using multi-level fuzzy assessment method to evaluate the water supply pipe network security level...
To study the effect of Asparagus officinalis polysaccharide on the number and activity of erythrocyte complement receptor 1(CD35) in S180 mice. Red blood cells from mice venous blood are labeled by rat anti-mouse CD35 monoclonal antibody and FITC-conjugated goat anti-mouse antibody. Using flow cytometry, we determined the number of CR1. Using microscope, we studied the adherence between erythrocyte...
In this research, kaolin is used as the raw material and modified to prepare an inorganic ion-exchange material through different modification methods. In this paper, several surface feature evaluation methods (SEM, NMR, IR) are used to discuss and analyze the modification process of kaolin. According to CEC measurement, the obtained inorganic ion exchange material has an ammonium ion exchange capacity...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.