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LI-6400 portable photosynthetic measurement system is used to measure effect of external source NO sodium nitroprussiate (SNP) of different concentration changes on photosynthetic physiology of Larix gmelinii seedling leaves. The result shows: net photosynthetic rate (Pn) and light saturation point(LSP) significantly rises as external sodium nitroprussiate(SNP) rises and light compensation point (LCP)...
The Revised Wind Erosion Equation (RWEQ) is a process-based, field-scale, empirical model with the ability to estimate annual or period wind erosion. A wind generator was used to reproduce wind data based on observed wind records in RWEQ. The need for validating the wind generator using measured wind data of China is growing. In this study, wind factor (Wf) was chosen to investigate the performance...
This research prepared a diatomite-wood powder/polypropylene composite for making use of diatomite and wood powder polypropylene (PP). Mechanical test results showed that, compared to the samples without diatomite, the impact strength, static bending strength and tensile strength were increased by up to 25.9%, 8.2% and 9.5% respectively for the composites with proper diatomite content. The Cone Calorimeter...
Biosparging is an in-situ remediation that uses indigenous microorganism to biodegrade organic constituents in groundwater. When using biosparging, it is necessary to consider the factors that affect biosparging. In this paper, the factors are discussed and analyzed by analytical hierarchy process (AHP). Results demonstrate, microbial population density, electronic acceptors and nutrient concentrations...
The definition of land development rights was first established in the western countries in the middle of 20th century as part of the land tenure in order to increase the utilization ratio and maintain the distribution of land benefits at a balanced level. New ideology of land consolidation have to be brought by introducing foreign land development rights into China and contribute the sustainable...
In view of the tube explosion phenomenon which usually occurred in the large natural circulation boiler. We carried out the experimental study which aimed at reducing the probability of the tube explosion and improving the economical efficiency.
In order to study paths to realize the sustainable development of ecotourism, this paper took Heilongjiang province as an example, and discusses the problems of present eco-tourism development in Heilongjiang province, And then puts forward four paths: plan as a whole tourism resources, cultivating tourism talents, pay attention to scattered customer, establishing and perfecting relevant laws and...
This paper presents the design and implementation of a new recognition method to monitor home accident and anomalies based on home environmental voice. Gaussian Mixture Models theory is utilized to modeling and identifies home environmental situations, so that it can perform real time detection and recognition for solitaries. The whole process includes four steps: pretreatment of voice signal, extracting...
By analyzing the problems of decomposing furnace exit temperature automatic control can not keep long-term run stably in domestic cement, application of Fuzzy-PI composite control in decomposing furnace is proposed. And according to the actual operation, expert operation experience is combined with Fuzzy-PI composite control. The scheme is the combination of fuzzy and PI control algorithm skillfully,...
In order to decrease fuel consumption and improve efficiency, the hybrid system of hybrid track-type bulldozer is established and its motor parameter matching method is investigated. According to traction dynamics theory of the track-type bulldozer, motor rated power, motor rated speed, motor peaking power, motor speed and maximum torque are calculated. The results show that motor parameter matching...
It is well known that green space has the ability to remove some atmospheric pollutants, but the effect of vegetation configuration on the removal has not known exactly. In this paper, four different vegetation configuration patterns were chosen, and the SO2 concentrations were measured through two methods. The green spaces had the ability to remove SO2 and the removal levels relate to the vegetation...
The sports of the emergence, development and the environment has close relationship. Combining with the current situation of environmental protection, this paper expounds the sports and the natural environment, environmental protection, put forward the relationship between the sport must coordinate development and environmental protection, advocate green and healthy sports activities and the way of...
In our study, SBE (Scenic Beauty Estimation) methods from psychophysical paradigm were applied to examining preferable management of the existing plant landscape in Changchun and offering experience for constructing quality plant landscape in the future. We studied and evaluated typical greenbelts in Changchun at two different periods of time, the whole year (including four seasons) and the summer,...
The development status of China's environmental protection industry and problems is analyzed. The development of opportunities in pollution prevention, environmental services is discussed from the national environmental protection industry-related policies and measures. Energy conservation and market demand of China's environmental protection industry in facing the development of opportunities in...
Traditionally, the gypsum fiberboard was produced with constructional gypsum. However, no researches which produce gypsum fiberboard with desulfurized gypsum were found. In this paper, the functional gypsum fiberboard is produced with desulfurized gypsum and fiber materials. The new type of gypsum fiberboard was produced through semi-dry process. The experimental setup was designed according to orthogonal...
The maturity and feeding ecology of roughskin sculpin Trachidermus fasciatus were studied in the Yellow River Delta, Bohai Sea, China. Two times of investigations were conducted in March when this species spawning. Sex was identified and body length, body weight, gonad weight and food organism weight were measured. The gonad somatic index and digestive tracts fullness index were calculated. Moreover,...
Environmental pollutions are on the rise in recent years, and often do a lot harm to sustainable development. As the final legal barrier, the investigation of criminal liability plays a vital role in supporting the sustainable development policy in China. This article analyzed the deficiency of current laws in investigating criminal liability for Chinese environmental pollutions in view of charges,...
In this study, we explored the modes of development of circular economy for transforming Guangxi economic developing mode. We use the case of Laibin city to show our potentials for the application of this model.
With the purpose to investigate the effect of heating temperature on the visible-light photocatalytic activities of carbon-doped TiO2, TiO2 photocatalysts doped with different amounts of carbon were synthesized through heating the dried gel at different temperatures from 70 to 350 °C. XRD, XPS, UV-Vis analysis were used to characterize the photocatalysts. The photocatalysts are all of anatase phase...
K-means algorithm used in the initial cluster centers are randomly generated, then clustering results are unstable and susceptible to the noise data-objects. In this paper presents a density-based algorithm to determine the initial cluster centers, eliminate the clustering results depend on the initial cluster centers. While, optimized the methods of cluster centers re-calculation and the distance...
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