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Search Results: 1 - 10 of 12918 matches for " Jinping Yao "
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Present Situation and Prospective of Camellia Nut Shells Utilization  [PDF]
Jinping Zhang, Lisong Hu, Zhoulian Wang, Menghao Du, Xiaohua Yao
Open Journal of Forestry (OJF) , 2015, DOI: 10.4236/ojf.2015.57066
Abstract: With the rapid development of Camellia oleifera industry, more and more Camellia nut shells have been produced, leading to serious environmental pollution problem. This paper reviews the works on the characterization of the physical and chemical properties of Camellia nut shells, active ingredient extraction, its application in chemical production, growing media and animal feed and its properties as a biomass. Based on the review, we proposed a novel all-component high value application strategy to covert camellia nut shells into high value biomasses, which could realize waste recycling and environmental protection.
FTIR and Thermogravimetric Analysis of Three Kinds of Nutshells  [PDF]
Jinping Zhang, Yue Ying, Xuebin Li, Xiaohua Yao
Natural Resources (NR) , 2018, DOI: 10.4236/nr.2018.98019
Abstract: The main components and pyrolysis characteristics of Camellia oleifera Abel hells, Castanea mollissima Blume shells, and Castanea mollissima Blume shells were analyzed by using FTIR and thermogravimetric methods. The experimental results indicated that the main components of the three kinds of raw materials consisted of cellulose, hemicellulose, and lignin. The highest contents of hemicellulose, cellulose, and lignin were in Camellia oleiferaAbel shells (49.34% ± 0.07%), Castanea mollissima Blume shells (27.34% ± 0.01%), and Carya cathayensis Sarg shells (49.78% ± 0.01%), respectively. The pyrolysis processes of three kinds of shells generally included three stages, namely dehydration, pyrolysis, and carbonization. The peak values and the appearance times of their pyrolysis rates were closely related to their compositions.
Infrared-Spectral Characteristics of Camellia oleifera Shell/Meal during Composting  [PDF]
Jinping Zhang, Yue Ying, Xuebin Li, Xiaohua Yao
Agricultural Sciences (AS) , 2018, DOI: 10.4236/as.2018.910090
Abstract: The compost products of Camellia oleifera shell/meal mixed at different mass ratios were characterized by Fourier-transform infrared spectroscopy (FTIR) at different composting stages to monitor the structural changes of their components. The results showed that the amount of Camellia oleifera meal significantly affected the composting rate of the shell, but did not change the degradation order and decomposition of the related compounds. During the composting process, microorganisms used the highly decomposable carbon source materials, such as proteins and sugars, first to grow and multiply, and then decomposed hemicellulose, cellulose and lignin by oxidative cleavage after these nutrients were consumed to a certain extent. The decomposition products were then condensed into more stable humic acids. The degradation rates of the compounds were directly proportional to the amount of Camellia oleifera?meal. The compounds in Camellia oleifera shell were composted faster with higher amounts of Camellia oleifera meals, resulting in less lignocellulose in the final products.
Transformation and Upgrading Strategy of Professional Towns in Guangdong during the “Internet+” Period  [PDF]
Jinping Wang
American Journal of Industrial and Business Management (AJIBM) , 2018, DOI: 10.4236/ajibm.2018.86106
Abstract: The upgrading strategy of professional towns is an important guarantee for the transformation of the economic development mode. At present, the economic development of Guangdong Province of China is facing a new situation of changing modes, adjusting structures, and changing forces [1]. How to speed up the transformation and upgrading of professional towns and promote economic development in the township, and thus promote the rapid economic development of Guangdong Province of China, is a serious challenge. The study finds that although the collaborative innovation development of professional towns in Guangdong Province of China is effective, there are still many problems and deficiencies: 1) low level of collaborative innovation; 2) narrow scope of collaborative innovation; 3) single structure of collaborative innovation; 4) a low dimension of collaborative innovation. This research is based on the new era of the Internet+ development and takes the lead in collaborative innovation research based on the perspective of the development of the town-region economy, and proposes innovative research results for the collaborative innovation of professional towns and professionalism for Guangdong Province of China [2]. Based on this, this research is mainly based on the summary of the current situation and problems in the development of professional townships, and builds the Six Major Systems Collaborative Practice from the six dimensions of management factors, enterprises, industries, platforms, and government, industry, research and application. The new models what the town has is about innovation and development.
Effects of the Castanea mollissima Blume Shell Cultivation Substrate on the Yield and Nutritional Composition of Pleurotus geesteranus  [PDF]
Jinping Zhang, Xuebin Li, Yue Ying, Xiaohua Yao
Food and Nutrition Sciences (FNS) , 2019, DOI: 10.4236/fns.2019.109080
Abstract: Cottonseed hull substrates blended with different ratios of Castanea mollissima Blume shell were prepared and used for the cultivation of Pleurotus geesteranus. The effects of the chestnut shell content on the mycelial growth rate, yield, nutritional composition and contents of heavy metals of the cultivated Pleurotus geesteranus were investigated. The results suggest that the Castanea mollissima Blume shell in substrate can increase the mycelial growth rate, yield, biological efficiency and the contents of protein, crude fiber, amino acids and essential amino acids of Pleurotus geesteranus. Further investigation suggests that the tannin and saponin in Castanea mollissima Blume shell and the C/N ratio of substrate significantly influence the mycelial growth rate. The crude fat content of Pleurotus geesteranus decreased, while the contents of heavy metals including mercury (Hg), arsenic (As), cadmium (Cd) and lead (Pb) increased with the increase of the
Effects of the Camellia oleifera Shell Substrate on the Yield and Nutritional Composition of Pleurotus geesteranus  [PDF]
Jinping Zhang, Xuebin Li, Yue Ying, Xiaohua Yao
Agricultural Sciences (AS) , 2019, DOI: 10.4236/as.2019.1010096
Abstract: Pleurotus geesteranus was cultivated on the substrates blended with different ratios of treated and untreated Camellia oleifera shells using cottonseed hull as the control substrate. The mycelial growth rate, yield, nutritional composition, ash and heavy metals of the Pleurotus geesteranus cultivated on these substrates were compared. The results suggest that the Camellia oleifera shell in substrate can accelerate the mycelial growth and increase the yield, nutrients and the contents of protein, ash, crude fiber and amino acid of Pleurotus geesteranus. It was found that the contents of tannin and saponin in Camellia oleifera shell affected the mycelial growth rate. The optimal C/N of the substrate for the growth of Pleurotus geesteranus was determined to be 27 ± 0.7. The C/N ratios higher than 30 reduced the protein, fat and soluble sugar contents of the cultivated Pleurotus geesteranus. The contents of heavy metals including Hg, As, Cd and Pb were found in Pleurotus geesteranus cultivated on the substrates containing Camellia oleifera shell complex.
Effect of Carya cathayensis Sarg Shell Substrate on Yield and Nutrient Amount of Pleurotus geesteranus  [PDF]
Jinping Zhang, Xuebin Li, Yue Ying, Xiaohua Yao
Journal of Geoscience and Environment Protection (GEP) , 2019, DOI: 10.4236/gep.2019.711002
Abstract: Using cottonseed hull as the control substrate, different proportions of the untreated and treated Carya cathayensis Sarg shells were added to cultivation of Pleurotus geesteranus. The mycelial growth rate, yield, nutritional composition and contents of heavy metals of the Pleurotus geesteranus cultivated on these substrates were determined. The results suggest that added to treated Carya cathayensis Sarg shell promoted the mycelial growth and increased the yield, biological efficiency and the contents of crude fiber, ash, amino acids and essential amino acids of Pleurotus geesteranus. In addition, the fat content and soluble sugar contents of Pleurotus geesteranus were decreased with the increase of the Carya cathayensis Sarg shell content in substrate, but their contents of heavy metals including mercury (Hg), arsenic (As), cadmium (Cd) and lead (Pb) were higher than that obtained on control substrate.
Dust Effect on the Performance of Wind Turbine Airfoils  [PDF]
Nianxin Ren, Jinping Ou
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2009, DOI: 10.4236/jemaa.2009.12016
Abstract: The full two-dimensional Navier-Stokes algorithm and the SST k-? turbulence model were used to investigate incom-pressible viscous flow past the wind turbine two-dimensional airfoil under clean and roughness surface conditions. The NACA 63-430 airfoil is chosen to be the subject, which is widely used in wind turbine airfoil and generally located at mid-span of the blade with thickness to chord length ratio of about 0.3. The numerical simulation of the airfoil under clean surface condition has been done. As a result, the numerical results had a good consistency with the experimental data. The wind turbine blade surface dust accumulation according to the operational periods in natural environment has been taken into consideration. Then, the lift coefficients and the drag coefficients of NACA 63-430 airfoil have been computed under different roughness heights, different roughness areas and different roughness locations. The role that roughness plays in promoting premature transition to turbulence and flow separation has been verified by the numeri-cal results. The trends of the lift coefficients and the drag coefficients with the roughness height and roughness area increasing have been obtained. What’s more, the critical values of roughness height, roughness area, and roughness location have been proposed. Furthermore, the performance of the airfoil under different operational periods has been simulated, and an advice for the period of cleaning wind turbine blades is proposed. As a result, the numerical simula-tion method has been verified to be economically available for investigation of the dust effect on wind turbine airfoils.
Set-Valued Stochastic Integrals with Respect to Finite Variation Processes  [PDF]
Jinping Zhang, Jiajia Qi
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.39A1003
Abstract:

In a Euclidean space Rd, the Lebesgue-Stieltjes integral of set-valued stochastic processes \"\" with respect to real valued finite variation process \"\" is defined directly by employing all integrably bounded selections instead of taking the decomposable closure appearing in some existed references. We shall show that this kind of integral is measurable, continuous in t under the Hausdorff metric and L2-bounded.

Application Status and Prospect of Pinus massoniana Sawdust as the Substrate for the Cultivation of Edible Fungi  [PDF]
Jinping Zhang, Menghao Du
Food and Nutrition Sciences (FNS) , 2017, DOI: 10.4236/fns.2017.812082
Abstract:
In this paper, the research status of using Pinus massoniana sawdust for the cultivation of edible fungi was analyzed and discussed. It was found that Pinus massoniana sawdust contained the material base of edible fungi with sufficient cellulose, hemicellulose and lignin and a small amount of nitrogen, phosphorus, potassium, calcium, magnesium, other mineral salts, and some vitamins for the growth of edible fungi. However, the Pinus massoniana wood contained a significant amount of terpenoids, which are detrimental to the growth of edible fungus and mycelial. The major and current detoxification methods for Pinus massoniana sawdust were analyzed, such as steaming method, distillation method, lime water immersion method, outdoor piling fermentation method, and chemical method. Their advantages and disadvantages were discussed and reviewed. Finally, the major issues in the application of Pinus massoniana sawdust as the cultivation substrate of edible fungi were analyzed, and the application prospect of Pinus massoniana sawdust as the substrate for the cultivation of edible fungi was also reviewed.
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