Study on the Navigation Flow Condition at Entrance Area of the Ship Approach Channel for Jinghong Power Station on the Lancang River

Based on the model test of Jinghong power station on the Lancang river, the unfavorable navigation condition at entrance area of down approach channel of the ship lift is measured and analyzed for original design scheme of the project, and the open -type guide works is applied to greatly improve the bad flow condition, so as to make the navigation condition better at entrance area.     

Opening Architecture of Collaborative Design Grid and Its Key Techniques

OGSA, as a universal grid computing frame, has resolved a good many problems in the CSCD, and provides a new solution for the network-based collaborative design. This paper studied the main problems in application of the grid technology to network-based collaborative design system by the OGSA based the WSRF, which is used as the basic platform of collaborative design grid. The meaning of the collaborative design grid is explained, and then the opening architecture of collaborative design grid design process on the condition of eoll is presented based on the function analysis in detail. Meanwhile, the collaborative aborative design grid is explained, and the key technologies of the collaborative design grid are analyzed deeply. The results provide a solution and groundwork for the more research on the collaborative design grid and its implementation.     

真空包装即食龙须菜食品加工工艺的研究

以龙须菜为原料,经过脱腥、护绿、调味、真空包装、杀菌等工艺处理,获得了4种风味的龙须菜即食方便食品。采用正交试验设计,确定了最佳的护绿工艺条件。结果表明,用体积分数10%的NaOH溶液,在60℃下,浸泡30 min可达到最佳护绿效果。     

酶法合成葡萄糖基-L-抗坏血酸的产酶条件及转化条件优化

采用单因素实验确立微生物发酵法产环糊精糖基转移酶培养基的基本条件和工艺条件,利用此酶催化L-抗坏血酸和糖基供体β-环糊精合成葡萄糖基-L-抗坏血酸(AA-2G),并通过正交实验考察不同加酶量、反应温度、pH值等因素,确立环糊精糖基转移酶合成产物的最佳条件为:浓度为0.04mol/L的L-抗坏血酸,酶量20mL,pH值7.0,温度50℃下反应15h。     

Building Energy Efficiency Design Procedure Based on Digital Technology

Abstract:Digital design technology is crucial for building energy efficiency design, while the key of building energy efficiency design is to analyze the entire design process, dynamic balance and energy cost. Through the application of digital technology in architectural design during its earlier phases, we can analyze such factors as local climate and terrain, create a "virtual building", simulate its actual condition, and conduct a scientific quantitative analysis of the key problems in architectural design. These actions will optimize the proposed design in a timely manner and achieve energy efficient design under the guidance of scientific analysis. Meanwhile, by exploring energy efficiency design procedure based on digital technology, we can adapt to a higher standard of energy efficient design in our new times.     

牛蒡、大豆、大蒜提取物提取工艺的优化

为了优化植物提取物的提取工艺,采用水浸提的方法研究了牛蒡、大豆、大蒜提取物的提取工艺。选取固液比、提取温度、提取时间等3项考察因素,采用正交实验对提取条件进行优化。实验结果表明：影响提取率的主因素综合来说是提取温度。其中,对于牛蒡来说,最优的提取工艺为：固液比1：20（重量比）,提取温度70℃,提取1小时。对于大豆来说,最优的提取工艺为：固液比1：10（重量比）,提取温度70℃,提取1.5小时。对于大蒜来说,最优的提取工艺为：固液比1：20（重量比）,提取温度90℃,提取2小时.     

Development Trend of Computer Aided Architectural Design(CAAD)

Through the review of history of CAD and CAAD technology development,combined with the application condition of CAAD technology in architectural design,this paper analyzes the theory and advantage of Virtual Building design,dissertates the development trend of computer aided architectural design(CAAD).The Virtual Building model is a complete database including all of the building information,which can be applied in the whole building industry such as building design,structural design,facility management,costing etc.,so as to manage all of the information during the building's life circle.     

Influence of Indoor Temperature and Humidity on Thermal Comfort and Energy Consumption of Air-Conditioning Systems

Taking a central air-conditioning system as an example,this paper presents the influence of indoor design temperature and relative humidity on thermal comfort and energy consumption in an office building in Guangzhou,P.R.China.The study shows that under the identical indoor thermal comfort conditions,the air-conditioning system cooling load increases with the increase of indoor temperature.Increasing the indoor temperature can not decrease energy consumption.In order to reduce the energy consumption in a central air-conditioning system meeting the required indoor thermal comfort condition,an indoor design condition with larger relative humidity and lower temperature is recommended.     

The Influence of Air Inlet on Ventilation Effect in Indoor SubstationTransformer Rooms

Ventilation design is the difficulty of transformer room design. Temperature field and velocity field in a transformer room was simulated by CFD method . By comparing simulation value with the experimental value in related document , the effectiveness of the mathematical model was verified. Based on it, an indoor substation transformer built was taken as the simulation object, then designed and simulated six kinds of ventilation condition by changing the location and area of air inlet, focused on the influence of air inlet on the ventilation effect by comparing the temperature field ,velocity field and temperature characteristic value in different condition. The simulation results show that when air inlet area is fixed, the air inlet should be arranged in the radiator side and its center height should be controlled in the radiator center height or slightly offset position, it should not be higher than the radiator. When the air inlet location is fixed, air inlet area should be increased along the high direction to improve ventilation effect. The conclusions can provide technical support for the ventilation design of transformer room.     

Finite Element Simulation of Inhomogeneity and Anisotropy of Proximal Femur

To solve implant's looseness and subsidence, and to adapt for the requirement of custom-made hip endoprostheses' rapid automatic design and manufacture, a new method is presented for constituting the anisotropic and inhomogeneous model of proximal femur based on CT, CAD technology and finite element analysis during design of custom-made hip endoprostheses, Raw CT image data, 3-D modeling and finite element software is utilized to set up 3-D finite element model of proximal femur. The model is provided with anisotropy and inhomogeneity by self-developed specific software. The near true proximal femur model is structured and good biomechanics condition is provided for optimize design of custom-made hip endoprostheses. For simulating and analysing of proximal femur's structrue and material mechanics property, and determining stress ,strain and response after-operation under the action of physiological load more exactly, and supplying design of custom-made hip endoprostheses with data, the method can provide biomechanics condition for optimize design of custom-made hip prostheses.     

Research on the Strengthening Effect of the Nitrogen and Phosphorus Removal by the Multi-loop Reactor in Low Carbon-resource Condition

A multi-loop reactor is constructed based on analysis of temporal and spatial character of several continuous current nitrogen and phosphorus removal process in this paper.Through cross experiment design,the important factors to influence the effect of the nitrogen and phosphorus removing under low carbon-resource condition were found,and the feasible control parameters of the biological nitrogen and phosphorus removal process under low carbon-resource condition were put forward.The results are valuable for design and operation of wastewater treatment process with similar conditions.     

Transverse Seismic Design and Analysis of an H Type Bridge Tower Cable Stayed Bridge

According to our current bridge seismic design codes, the bridge tower is explicitly required to remain almost elastic even under the excitation of occasionally happened earthquake. To achieve this seismic performance objective, usually the steel ratios of tower base and strut are required to satisfy the static loading demand and increase by a large margin as well in most engineering practices which leads to engineering inefficiency as well as a rising seismic demand for the substructure. Therefore, the structural design parameters including the location, the stiffness and the constrain condition of the strut with respect to the tower column of H shape tower were studied to explore their effect on the transverse seismic responses of cable-stayed bridge tower, Moreover, the effect of yield intensity of the strut on the seismic responses of the tower column is also studied. The results show that the location and the stiffness of the strut have a slight effect on the seismic responses while the transverse seismic demands of the bridge tower decrease drastically when the constrain condition between the cross beam and the tower column changes.     

山药总皂甙的提取研究

以山药中总皂甙提取率为考察指标,应用单因素试验和正交设计对山药总皂甙提取工艺中的浸提温度、乙醇的体积分数、浸提时间、料液比进行了研究。以薯蓣皂甙为标准,香草醛—高氯酸为显色剂,冰醋酸为溶剂,用分光光度计在波长为544nm处对山药总皂甙的含量进行了测定,得出山药总皂甙的最佳提取工艺条件是:浸提温度为60℃,浸提时间为6h,乙醇体积分数为80%,料液比为1∶8。     

An Improved Genetic Algorithm for Optimum Design of Power Transformers

In order to enhance the ability of global searching for genetic algorithm in power transformers optimization design, some interrelated key technique problems such as encoding method, genetic operators, restrict condition, fitness function for the traditional genetic algorithm are further reformed. An Improved Genetic Algorithm (IGA) is developed. The optimal results of a representative mathematical example show that IGA has high efficiency of global searching. At the same time, a multi-objective algorithm based on IGA is studied in this paper. IGA is applied to the single and multi-objective optimum design of S9 power transformers for the first time. All the achievements in the paper are verified a practical S9-1000/10 kV power transformer. All the optimization results are satisfactory and show that IGA has powerful ability of global searching, excellent solution precision and has a bright application prospect in the fields of power transformers design.     

红树莓花青素的微波辅助提取研究

目的：红树莓花青素的微波辅助提取及其体外清除自由基能力。方法：花青素提取工艺采用中心试验设计响应面试验设计,抗氧化能力测定通过了清除羟自由基、ABTS和DPPH进行评判。结果：红树莓花青素的最佳提取工艺为：微波强度600W,微波时间40S,液料比60︰1,酸化乙醇浓度的体积比为20:80,浸泡时间10min。在此条件下树莓花青素的预测含量为0.055mg/g,实际测得花青素的含量为0.054mg/g。     

黑豆不同发芽期VC变化规律研究

采用0.1%的草酸作为流动相,研究用高效液相色谱法测定黑豆不同发芽期VC的含量。通过正交试验分析:当溶液pH值7.5,温度23℃培养7 d时,黑豆芽中VC含量最高,并且黑豆芽的外观品质较好。     

水解猪血蛋白制备肉味香精工艺优化研究

研究以猪血水解物为原料制备肉味香精的工艺。利用SAS软件中的Plackett-Burman(PB)设计,结合感官评价,对影响产物风味的相关因素进行评价,并筛选出了有显著效应的酶解液、硫胺素及反应温度等因素。然后用Box-Behnken设计及响应面分析确定了主要影响因素的最佳条件。最佳反应工艺条件:酶解液37.4 mL,硫胺素1.6 g,温度101℃,葡萄糖20.0 g,牛磺酸2.0 g,半胱氨酸2.5 g,反应时间60 min,pH值6.0。Plackett-Burman(PB)试验设计结合响应面分析可用于肉味香精工艺优化,理论感官评价得分为28.6分。     

The Internal Force Calculation of the Whole-Raising-Scaffold

Because of the different configurations of buildings to be constructed, the arrangement of the whole-raising-scaffold used for practical construction is not always the same, which results in difference of the internal force of the whole- raising-scaffold in application. Based on the abovementioned, in this paper, the design method of the whole-raising-scaffold is investigated, a mechanical model based on the three-span continuous beam is set up, the mechanical characteristics due to the action of various load of the whole-raising-scaffold under the worst working condition is analyzed. Then the calculating method for the internal force of its main structure can be found. Combining the internal force calculated by this method, the security of the scaffold can be verified. The method introduced by this paper can be used as a general method for the scaffold design.     

发酵型黄米酒酿制工艺的研究

以黄米为原料,小曲甜酒药为糖化发酵剂,酿制黄米酒。通过正交试验,分析得出黄米酒的最佳酿制工艺条件,即蒸米时间为30min,酒药添加量为1%,发酵温度为27～29℃。在此条件下酿制的黄米酒颜色淡黄、澄清透明,具有清淡发酵香味、口感良好,质量符合有关食品标准。     

A Discussion about the Skills of Construction Programme Design Under the New Engineering Conditions

Based on the analysis for common methods of construction programme design with considering the new engineering condition, the author gives discussion on the skills of programme design.