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For the purpose of facilitating the implementation of ecological compensation, an ecosystem assessment indicator system of ecological function region was established. The theoritical basis and overall thinking were clarified. The research object was determined which is five categories of ecological function region with regulating function. The differences between the ecsystem assessment and ecosystem...
This paper based on analyzing influence factors of non-point source pollution in Yitong River basin, chose factors of four aspects--soil type, land use, climate elements and ground water to establish risk assessment system for agricultural non-point source pollution; then used engineering drawing and overlay analysis application in GIS technology, and calculated the power of the weight of each factor...
Twenty-six threatened species listed in the China Plant Red Data Book were found in the Changbai Mountain. These species were acquired and analyzed on the area type of species and floristic Characteristics. Major results are as follows: distribution of these species mostly belongs to the temperate zone property and is mainly composed of north temperate nature; and threatened plants were distributed...
Based on MEMS silicon micro-machined capacitive sensor, a novel vibration monitoring scheme of vehicle loaded with dangerous goods is presented. With the change of external excitation, the electric capacity of the sensor will change correspondingly, which leads to a feedback voltage change of the movable mass in the sensor. Using this property, by monitoring the feedback voltage magnitude and direction...
Eucalyptus planting area is larger and contiguous distribution in Danzhou Forest Farm, lying in the west of Hainan, China. 4 years old eucalyptus forest and artificial coconut grove, the space adjacent and the natural conditions similar, were selected as comparative research plots. Study on the soil moisture environment differences of eucalyptus plantation and artificial coconut grove by continuous...
Based on the evaluation of the ecological environment quality in ore concentrated area, combining with the pollution sources and composing characteristics, the environment quality grey early-warning system in ore concentrated area is established in this article. Because of the diversity, complexity, and particularity of the pollution sources in ore concentrated area, the composition of the environment...
In this paper, the slime flotation of Dongpang, Xiqu and Guandi were studied by using new micro-emulsion and diesel oil as collector respectively, the results showed that micro-emulsion was a better collector on flotation effectiveness. Compared with diesel oil at the similar clean ash content, the clean coal yield of Dongpang, Xiqu and Guandi were improved by 14.21%, 3.90% and 5.54%, respectively,...
A concentration of 1.2×108 cfu/mL Bacillus coagulans YX-6 was poured into the shrimp culture ponds with the concentration of 1000mL/667m2, and the water quality such pH, DO, NH4+_N content, NO2−_N content, and the death quantity of the shrimp were studied for 7 days. It was demonstrated that the Bacillus coagulans YX-6 could improve water quality in contrast with the control group. The results indicated...
Searching for biological active substances is one of the important ways to develop new type of bactericide at present. Our country is an ideal place to search botanical germicide in that our country is rich in plant resources. This thesis studies the protein antimicrobial activity of auricularia by using alternaria sp, alternaria alternata, fusarium, aspergillus, rhizopus and penicillium as the test...
In order to reveal the mechanism of antler development and elucidate the function of antlerogenic periosteum in the process, in this experiment we selected four one year old male sika deers. A full one side antlerogenic periosteum was removed to the frontal bone by surgery operation. The results showed that there have no antler grows in the place where the periosteum was removed,but the antler grows...
To solve problems concerning interpretation of the long wire source of ground-airborne electromagnetic data, this article brings forward a method by splitting the long wire source into numbers of electric dipoles. It also discusses how different receiving heights influence electromagnetic response. That leads to when the receiving height is less than 30m; the response received on the ground is equivalent...
Paclitaxel has been relatively successfully used for tumor therapy. Apart from cell cycle arrest at G2/M phase, it exerts anti-tumor effect by inducing apoptosis in most types of cancer cells. Norcantharidin (NCTD) is a demethylated analogue of cantharidin, and it has been used for treatment of primary hepatoma and other carcinomas in China. Both of the two regents can arrest cell cycle and inducing...
In this paper we study on automatic transmission method of vehicles in different throttle utilizing fuzzy technology. The hardware is PLC and HMI etc, the software is fuzzy rule. It is difficult to set up exact mathematic model, using practice experience of driver to form the fuzzy control rules in different throttle . The rules are stored in PLC`s memorizer and it come true controlling of vehicle...
The usage of cemented paste backfill (CPB) in the underground by mining industry is becoming increasingly. In this study, three kinds of CPB with waste rock content of 15%, 20% and 25% respectively were tested, and their stress-strain curves were obtained. According to the damage mechanism of CPB during the uniaxial compressive failure process, this paper further established the damage constitutive...
The objective was to determine the content of flavonoid and polysaccharides in Magnolia sieboldii K. Koch. Leaves of M. sieboldii were extracted by ultrasonic method and the total content of flavonoid and polysaccharides in M. siebodlii leaves were determined with UV spectrophotometer. The content of flavonoid in M. sieboldii K.Koch leaves under 510nm was 7.763%. The content of polysaccharides under...
Chytridiomycosis is an emerging fungal disease of amphibians responsible for mass mortalities and population declines worldwide. To date, the presence and epidemiology of this pathogen in China is unclear. In order to assess the infection of wild anurans (Rana dybowskii) by the causative agent, Batrachochytrium dendrobatidis, 120 tadpoles were collected across 12 sites in Heilongjiang Province and...
To satisfy the requirement of ecological sustainability in urban landscapes, the deep ecology idea and the landscape ecology theory were introduced into the philosophy of design, resulting in a research on design method strategy that is focused on three correlations, namely, “Ecology-Space,” “Ecology-Technology,” and “Ecology-Function.” Furthermore, the framework of ecological sustainability-oriented...
Three irrigation treatments in field experiment, the treatment of L(330mm), the treatment of M(390mm) and the treatment of H(450mm) were adopted in cotton cultivation under mulched drip irrigation in Xinjiang, we studied the relationship between cotton yield formation traits and water use efficiency(WUE), the results showed that: WUE is low and cotton growth unhealthy under the treatment of L and...
Pyrolysis characteristics and kinetics of pig manure were investigated with thermogravimetric analysis. Experiments at different heating rates (10°/min, 20°/min, 30°/min, 50°/min) and particle sizes (0.2mm, 0.2∼0.5mm, 0.5∼1mm) were performed and analyzed. The results showed that the non-isothermal pyrolysis process of pig manure is composed of dehydration, transition phase,rapid pyrolysis stage and...
Steam wetness has great influence on safety and economy for steam turbine. This paper presents the numerical simulation of gasifies the length based on the double area heating method. Fluent has its own evaporation equation and boiling equation. I enable these two equations. during the simulation. When it calculate using the standard turbulence model and set wall temperature with constant heat flux,...
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