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Evaluation of biogas production from co-digestion of pig dung,water hyacinth and poultry droppings

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Waste Disposal and Sustainable Energy 2019年第4期1卷 271-277页

作者： Akindele O.Okewale Olusola A.Adesina Department of Chemical Engineering Federal University of Petroleum ResourcesEffurunDelta StateNigeria Department of Chemical and Petroleum Engineering Afe Babalola UniversityAdo EkitiEkiti StateNigeria

In this study,biogas production from co-digestion of pig dung,water hyacinth,and poultry droppings was investigated.500 ml bio-digesters were connected in series and water displacement method was used to estimate the amount of biogas *** ratio of the percentage weight distribution of pig dung to water hyacinth to poultry dropping was varied as:(0:40:60),(30:40:30),(15:40:45),(45:40:15),and(60:40:0)in digesters A1,B2,C3,D4 and E5,*** highest biogas cumulative yield of 307 cm^(3) CH_(4)/g was obtained in digester *** gas chromatography analysis showed 22.50 wt%(CO_(2)),64.92 wt%(CH_(4))and 4.83 wt%(N_(2))which implied that the biogas produced can be used for cooking and heating of homes in rural and urban communities.

关键词： Biogas Co-digestion digester

Research Paper on Design and Implementation of Solid Organic Waste Managing System

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Journal of Life Sciences 2017年第3期11卷 133-140页

作者： Ramesh Prasad Dahal Nepal Science and Technology Research Centre Kathmandu 44600 Nepal

During the energy crisis of the nation and normal day-to-day activities, biogas technology can be a potential alternative source of energy. Conventional biogas has considerably low output methane gas for a given organic input. Considering the need for efficient biogas plant, SOWMS （solid organic waste managing system） has been designed and implemented on a trial basis by constructing community bin at ward number 4 of Gothatar VDC, Nepal. When composition of output biogas from the SOWMS was tested for five times, at different days, the average composition of gas was 55% methane and 35% carbon dioxide. The gas produced from 1 kg of waste is calculated to be 45 liters and pH value of slurry was found to be 7.8. These values indicate that designed system has good performance and that it can be optimized in the future research. Finally, this research work has some social implications that can have potential impact to uplift the society.

关键词： Biogas SOWMS digester leachate slurry dome.

使用WebControl技术扩展Struts框架

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使用WebControl技术扩展Struts框架

作者：周杰上海交通大学

学位级别：硕士

Struts是一个广泛使用的开源的web应用程序框架,它帮助程序开发者更快更简单地创建web应用程序。作为MVC模式的经典实现,Struts的应用分三层,控制器层,模型层和视图层。在视图层,Struts依赖于JSP和自定义标签库。基于HTML和内置类脚本... 详细信息

Struts是一个广泛使用的开源的web应用程序框架,它帮助程序开发者更快更简单地创建web应用程序。作为MVC模式的经典实现,Struts的应用分三层,控制器层,模型层和视图层。在视图层,Struts依赖于JSP和自定义标签库。基于HTML和内置类脚本语言的开发方式使得采用Struts的Web应用在视图层的维护变得困难。当前对Struts视图层的研究多集中于采用xml和xslt技术,由于缺少一个好的视图层模型和xslt技术的缺陷,这方面的研究往往缺少实用性。本文在对Struts进行深入研究的基础上,对视图层进行了完整的xml建模,然后利用digester技术,实现了强大的WEB生成器WebControl。进一步,本文成功地利用WebControl技术对Struts进行扩展,不仅将Struts视图层的开发改进成为xml驱动的模式,而且从视图层的JSP、客户端验证、ActionForm等方面全方位地简化了Struts模型和开发流程。随后本文将WebControl+Struts技术应用在惠普与新加坡电信合作的大型电信平台Promis中,并获得了成功。在实践中证明了该技术的实用性和相对于其他Struts视图层扩展框架的优势。

关键词：框架 struts webControl digester xml

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基于XML配置的动态数据查询技术

计算机系统应用 2019年第8期28卷 148-154页

作者：江日念许锟林霞中国石油勘探开发研究院计算机应用技术研究所

针对信息系统中静态数据列表开发效率低下和不能满足用户定制化需求的问题,提出基于XML配置的动态数据查询技术.首先通过Apache digester解析表单的XML结构化配置,将实例化的配置信息交由动态查询引擎处理,动态查询引擎结合配置信息通过... 详细信息

针对信息系统中静态数据列表开发效率低下和不能满足用户定制化需求的问题,提出基于XML配置的动态数据查询技术.首先通过Apache digester解析表单的XML结构化配置,将实例化的配置信息交由动态查询引擎处理,动态查询引擎结合配置信息通过SQL、HQL、接口查询获取数据.最后将配置和数据以JSON格式传给客户端处理,以二次封装改进的dhtmlxGrid表格控件展示,形成动态数据列表.该动态查询技术已在多个系统中应用,应用效果证明,其显著提高了软件研发效率,能够满足组合查询定制、数据列自定义、数据列渲染、数据范围控制等各种定制需求.

关键词： digester 动态查询引擎 dhtmlxGrid 组合查询定制数据范围控制

Integration of Tropical Renewable Energies

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Journal of Energy and Power Engineering 2019年第3期13卷 91-96页

作者： Daltro Garcia Pinatti Rosa Ana Conte Thiago Hirosse Silva Luis Miguel Paulo Rodolpho de Oliveira Moreira Department of Materials Engineering Lorena School of EngineeringUniversity of S鉶 PauloLorena 12602-810Brazil

Main sources of renewable energy in the tropics are solar thermal and ***-performance concrete(HPC)allows prefabrication of stakes,planks,boards,U-,L-,and I-profiles,prestressed thick-wall cylinders,and arc *** are used to construct fences,level curves,buildings,contention walls,water and anaerobic tanks,and *** production is increased by retention of rain water in the soil by level curves,in riparian tanks,and with *** anaerobic digesters produce biogas,biochar,and liquid *** is partially washed in medium-pressure vessel to obtain vehicular methane gas,which is partially burned in engine generator sets,whose combustion gases are fed into a boiler of a thermoelectric *** cycle is thermal solar regenerative Rankine cycle with heat *** receives hot water from thermal solar parabolic collectors,burns residual biomass and biochar generating steam for a turbogenerator set and combustion gas for condenser dryer silo,whose exhaustion heat goes to anaerobic digesters.

关键词： High-performance concrete profiles thermal solar-biomass energy generation biomass anaerobic digester biogas