Applied Mechanics and Materials Vols. 608-609

Abstract: Solar greenhouse is a major form applied to the facility agriculture industry of China currently, which has made historical contribution to the insurance of vegetable supply and farmers’ income increase. On the basis of the full study of environmental factors closely related to the growth and development of plants and the status quo of China’s solar greenhouse technology, this paper develops an automatic monitored control system of solar greenhouse environment based on single-chip and king-view, thus realizing the supervision and control over the environmental factor data such as the temperature and humidity of indoor air, humidity of soil and illumination. The test has shown that the designed function of the system has been achieved with stable and reliable operation as well as friendly human-computer interaction interface, so as to meet the requirements of timeliness, stability and reliability of the solar greenhouse supervision system.

Abstract: With the constant development of information technology and the strengthening of safety awareness, people study more and more on the earthquake. In this paper, it conducts analysis of the earthquake at fault by the GIS. First, a detailed description of the data organizational form in the spatial database and the data pretreatment is given; secondly, it discusses the buffer principle and the superposition principle of the seismic correlation, and describes the establishing process of the earthquake buffer and seismic activity; finally, according to the theory, it realizes the system by software. This paper has a positive effect for the geological workers.

Abstract: The paper study on the architecture of monitoring system in the field of agricultural environmental based on Internet of things that can achieve real-time online monitoring on more growth morphology of plant, air temperature, humidity, soil moisture, light intensity and CO2 concentration, pH value and crop water environment multi parameter. In this paper, using the CC2430, intelligent irrigation system was designed and implemented according to the actual needs of the decision-making and management of plant irrigation. The system cost compared to similar foreign products decreased 44.8%. Compared with traditional irrigation methods, crop water use efficiency is 22.6%.

Abstract: Objective: To select the best process extracting protodioscin from trigonella foenum-graecum L. Methods: Methods: Orthogonal experiment method is used, and the content of protodioscin is used as the indicator. And the influence of ethanol solution concentration, the ratio of material to solvent, extraction time and extraction times on extraction rate of protodioscin from trigonella foenum-graecum L. And the best extraction process is selected. Results: 75% of ethanol is used, the ratio of material to solvent is 1:60, and ultrasound extraction is made for three times, each time for 15min, which is the best extraction process. The experiment proves that the optimization conditions are reliable and are suitable for ultrasound extraction process of protodioscin in trigonella foenum-graecum L.

Abstract: In order to optimize the extraction technology of total Saponin of Gynostemma pentaphyllum by decompressing innner ebullition, the technology was established between the extraction yield of total Saponin and several independent variables (the concentration of desorption agent, solid-liquid ratio, extraction temperature and time) through orthogonal test ,which was based on the single factor experiment. Experiment results show that the optimum extraction conditions for 5.0 g raw materials are as followed: the volume fraction of ethanol solution saturated the materials is 60% , the volume of water is 19 times to material. The extraction process can finish after 5 min at 50 °C twice. The results indicate that orthogonal test design can be an effective method to optimize the extraction technology of total Saponin of Gynostemma pentaphyllum through decompressing innner ebullition.

Abstract: Based on the optimization emergency management legal mechanism of environment emergency, we introduce the Apriori law to the emergencies analysis, and use support degree and confidence degree to improve the Apriori law, so the law has stronger relevance. We use the VC software to programming mathematical model of the law, and use VC source code and engineering design model to design the computer optimization system of environmental emergency management legal mechanism. In order to verify the effectiveness and reliability of the system, we do correlation calculation on legal mechanism before and after optimization, and obtain the correlation visualization process curve of Apriori law, and obtain the optimum structure of environmental emergencies legal mechanism. It provides a new computer method for studying environmental emergency management.

Abstract: In this research, the effect of modified bentonite on removing harmful organisms in ballast water was discussed using HDTMA⁺ modified bentonite as flocculating material, and Alexandrium tamarense, Nitzchia closterium, and Photobacterium phosphoreum as the objects of harmful organisms, and also through an observation of the reaction mechanism between HDTMA⁺ and bentonite with Fourier transform infrared spectroscopy (FTIR). The result showed that there was an effective combination of HDTMA⁺ with bentonite, and the modified organic bentonite possessed a powerful ability to remove harmful organisms. The removal rate against Alexandrium tamarense within 24h was greater than 85% if the dosage of the organic bentonite was 0.03 g/L; the removal rate against Nitzchia closterium was approximate to 80% if the dosage was 0.06 g/L; the luminous intensity could not be displayed by luminescent bacteria under the condition of concentration 0.30 g/L, and also the original soil with modification did not shown a significant removal effect under the same dosage. Therefore, it was concluded that the conditions such as aging time, organic bentonite’s particle size, and HDTMA⁺ dosage were the important factors affecting the harmful biological removal efficiency.

Abstract: Zhunzhong area Qingshui River group has top and bottom boundaries,which are not clear,and research on the evolution of the lack in sequence stratigraphic framework of deposition and on the reservoir sand body types do not have a clear understanding problem.In seismic interpretation, core description and based on the analysis of the related test,combining with the mud logging and well logging data,for the redefinition of Qingshui River group on the top and bottom boundaries,it identifies 6 time significance of sequence boundary,taking Qingshui River group can be divided into 2 sequences, 5 system tracts;clear and definite the study area mainly developed delta lacustrine depositional system,which can be further divided into the delta front subfacies, beach bar facies and semi deep lake subfacies. It takes an analysis on the sedimentary characteristics and distribution rules of different types, and it controls effect of topography and hydrodynamic conditions on deposition system, and then puts forward the corresponding sedimentary patterns.