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To further promote the study of the carbon sinks and the quantitative analysis of fixing carbon and releasing oxygen of Phyllostachys pubescens which was the principal bamboo species in subtropical area, diurnal variations net photosynthetic rate were measured using photosynthesis methods in this study. The results showed that: there were obvious differences in carbon fixation and oxygen release among...
With the development of urbanization, more and more buses come into people's lives, and a lot of bus fires have occurred to personnel and properties in occupied areas. So this paper aimed at the typical bus fires, through setting different fire scenarios, dynamic process of bus fires was studied by using FDS, and the effects of combustible material type, fire source location and ventilation on smoke...
With the change of global climate and ecological environment, more and more people become more concerned about the relationship between the SBP reference value and the environment. This paper discussed the relationship between the SBP reference value of the health Adolescent boys and the geographical factors in china. There are different SBP reference value in different areas of china, and we chose...
This study reported the spatio-temporal variability of terrestrial net primary production (NPP) in the lower-middle reaches of Yangtze River from 2000 to 2006. The impact of climate change was also described. According to the analysis results, mean NPP of this region during 7 years was 535.8 gCm−2yr−1, which was higher than that of the nation during the same period. It was found that NPP showed great...
Based on one 160m PC bridge project, the field measurement and finite element analysis of the hydration temperature of cast-in-situ box girder on top of pier have been completed. The distrabution of the hydration temperature fields and the rule of the temperature changing with time have been sumed up in this paper. The factors which affect the hydration temperature of cast-in-situ box girder on top...
To investigate evaluation method of the color of Zhang-Bang Fructus Aurantii pieces, and to quantitatively analyze the relationship between the color and internal quality of Zhang-Bang Fructus Aurantii pieces. Methods: Taking processing techniques of Zhang-Bang Fructus Aurantii pieces as research objects, using a camera and Adobe Photoshop software to collect the elementary information of processing...
The purpose of this study is to develop a multi-functional anti-corrosion coating used to inner wall of water pond in service area of express highway. This coating is composed of two components, the main agent without solvent and curing agent. Firstly, the film forming substance of the main agent is prepared by polyurethane/epoxy resin IPN composite. Secondly, the main agent is composed of the film...
This paper using the weather station data in rural surroundings which have been not changed near fifty years, and applying the statistical method of serial correlation and inclination rate to analyzes the trend changes of environmental temperature and accumulated temperature in the Western Liaoning rural area. This research providing the proof of climate change study, describing the climate characteristics...
As the traditional refrigerant damage to the ozone layer, global warming and other environmental problems have become increasingly prominent, CO2 has started to be emphasized again as an ideal refrigerant. The characteristics of CO2 as refrigerants are introduced. The CO2 trans-critical cycle is analyzed and summarized in detail. The methods of improving cycle performance are proposed, which include...
With most of China's residence being high-rise buildings and multi-story buildings, heat users within the same building can have huge differnces in the heating cost due to varied heat consumption of different locations inside the building. In this paper, the principle, constitution and application analysis of TFTM system is introduced. The application results show that the method solves the issue...
A modified oxidation ditch process is applied in a full-scale municipal wastewater treatment plant. Compared with the conventional oxidation ditch, the modified oxidation ditch adds some microporous aerators to improve oxygen utilization. The measures bring about a further improvement of nitrogen and phosphorus in the urban wastewater. The monitoring results for one year show that the influent concentrations...
Micro combustion chamber is the core part of the MTPV power system. But the size of the combustor always is determined by the experience. In the article, we attempt to predict the size of Micro combustion chamber according to the temperature distribution trend of wall with GM (1, 1) model of the grey theory system. Conversion efficiency map of GaAs photoelectric element is forecast feasible condition...
The principium of Denitrifying Phosphate Removal Bacteria was summarized in this article. study on influential factors of the Denitrifying Phosphate Removal such as carbon source, temperature, MLSS and pH, Which can provide reference and foundation for the denitrifying phosphorous removal process.
In the context of accelerated urbanization, urban heat island (UHI) has received much attention. Remote sensing(RS), geographic information system (GIS) and multiple regression analysis method were coupled in this study to explore the spatiotemporal change of UHI and identify its influencing factors over the period 2001–2007 in a coastal city, Southeast China. Five indicators including urban built-up...
Using hydrochloric acid and rare earth polymer coagulant mixing heating method, to prepare of a new type of rare earth polymer coagulant polymer coagulant (PRE). Through a single factor and cross experiments to find the best prepare conditions: the concentration of hydrochloric acid 2mol / L, reaction temperature 100°C, the amount of rare earth added 10g, reaction time 6h. Yellow River water for example,...
The cold flow properties of waste oil biodiesel (WME) were studied by gas chromatography-mass spectrometry (GC-MS), multifunctional low temperature tester, differential scanning calorimetry (DSC) and solution crystallization theory. Three approaches for reducing cold filter plugging point (CFPP) of WME were investigated: crystallization fractionation, blending with winter petrodiesel and treating...
In this paper, fly ash after chemical modification was applied into the adsorption process on Cr(III). The operation conditions in modification process, such as concentration of modification solution, time, temperatures, dosage of fly ash and so on, were analyzed to optimize the characteristics of modified fly ash, qualitativly indicated by the removal capacity on Cr(III). The achievements indicated...
Zooplankton spatial distributions and additional environmental features of Tianwan Offshore Area were studied in August 2009 at 14 stations. The abundance, distribution, and diversity of zooplankton were analyzed. copepods, larval stages, and hydromedusae dominated the zooplankton community. At total 72 species of zooplankton with 13 groups were identified. With 20 Zooplankton larvae, 19 Jellyfish,...
The effect of environmental factors such as life styles pH and DO and temperature on the growth of tubificidae were discussed base on L. hoffmeisteri. The experimental results indicated that attached growth system is superior than suspension growth system for Tubificidae. The average growth rate was 0.466 g.g−1 and −0.242 g.g−1 respectively after three weeks culture. It is found that high DO concentration...
The characteristics such as chemical constitutes, appearance shape, substance on stitutes of typical dry desulfurization ash from dense flow absorber were well studied, which combined with theory analysis, chemical analysis, SEM, TGA-DTG, XRD. The results showed that this desulfurization ash were mainly constituted of CaSO4, CaSO3 and CaCO3, and its granularity was slenderer than pulverized fly ash...
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