检索结果-南通市图书馆

水杨酸处理对采后西兰花褪绿转黄及营养品质的影响

在线全文

学校读者我要写书评

暂无评论

食品科学 2024年第9期45卷 181-188页

作者：杨庆喜罗曼莉周倩纪淑娟沈阳农业大学食品学院辽宁沈阳110866

本实验探讨了水杨酸(salicylic acid,SA)处理对贮藏期间西兰花色泽以及营养品质的保护作用。结果表明,SA处理明显推迟了西兰花褪绿转黄进程,处理样本表现出较高的叶绿素含量、-a^(*)/b^(*)值、量子产量和荧光下降比,以及较低的L^(*)值... 详细信息

本实验探讨了水杨酸(salicylic acid,SA)处理对贮藏期间西兰花色泽以及营养品质的保护作用。结果表明,SA处理明显推迟了西兰花褪绿转黄进程,处理样本表现出较高的叶绿素含量、-a^(*)/b^(*)值、量子产量和荧光下降比,以及较低的L^(*)值和黄化指数。同时,与对照组相比,处理样品萝卜硫苷、芸薹葡糖硫苷、萝卜硫素、吲哚-3-甲醇及抗坏血酸(ascorbic acid,AsA)的损失显著受到抑制,总酚和总黄酮含量的积累明显增加;此外,处理组样本抗氧化能力明显提高,丙二醛含量显著降低。多变量统计分析直观地展示了感官变量及营养变量在两组样本中的分布,进一步证明SA处理对萝卜硫苷和AsA的保护作用更强,且可有效诱导抗氧化能力的提高。

关键词：西兰花采后水杨酸硫代葡萄糖苷品质劣变

Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic devices

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2013年第4期7卷 479-486页

作者： manli luo Jing LIU Key Lab of Cryogenics and Beijing Key Lab of CryoBiomedical Engineering Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China Department of Biomedical Engineering Tsinghua University Beijing 100084 China

There is currently a growing demand for developing efficient techniques for cooling integrated electronic devices with ever increasing heat generation power. To better tackle the high-density heat dissipation difficulty within the limited space, this paper is dedicated to clarify the heat transfer behaviors of the liquid metal flowing in mini-channel exchangers with different geometric configurations. A series of comparative experiments using liquid metal alloy Ga68%In20%Sn12% as coolant were conducted under prescribed mass flow rates in three kinds of heat exchangers with varied geometric sizes. Meanwhile, numerical simulations for the heat exchangers under the same working conditions were also performed which well interpreted the experimental measurements. The simulated heat sources were all cooled down by these three heat dissipation apparatuses and the exchanger with the smallest channel width was found to have the largest mean heat transfer coefficient at all conditions due to its much larger heat transfer area. Further, the present work has also developed a correlation equation for characterizing the Nusselt number depending on Peclet number, which is applicable to the low Peclet number case with constant heat flux in the hydrodynamically developed and thermally developing region in the rectangular channel. This study is expected to provide valuable reference for designing future liquid metal based mini-channel heat exchanger.

关键词： heat exchanger liquid metal mini-channel,heat dissipation heat transfer coefficient

Experimental study of CO_(2) storage in water-flooded oilfields

在线全文

学校读者我要写书评

暂无评论

Petroleum Research 2017年第4期2卷 378-382页

作者： Zubo Zhang Xu Chen Yuchen Qian Qingjie Liu Weifeng Lv manli luo Xiliang Fan State Key Laboratory of Enhanced Oil Recovery PetroChina Research Institute of Petroleum Exploration and DevelopmentBeijing 100083China Department of Polymer Science and Engineering School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China China University of Petroleum Beijing 102249China

CO_(2) is the main source of greenhouse emission,and the environment problem caused by greenhouse effect has drawn worldwide *** most oilfields in China,a method of waterflooding is usually used to enhance oil recovery,which is favorable to carry out CO_(2) injection *** CO_(2) injection in the water-flooded oilfields can not only store CO_(2),but also enhance the oil *** this article,the coreflooding tests with refined oil were conducted to investigate CO_(2) displacement characteristic in watersaturated formation under different injection rate and water-flooded oil reservoir under different formation pressure and oil saturation,then the CO_(2) storage capacity was *** testing result shows that the displacement efficiency increases with the rise of the CO_(2) injection rate,and the CO_(2) injection can enhance the oil recovery about 15%OOIP under the experimental *** injecting CO_(2) after the waterflooding,the CO_(2) storage capacity increases as the rise of the formation *** core-flooding tests also indicate that when the initial oil saturation of reservoir prior CO_(2) injection is higher,the oil recovery will be higher when injecting the same pore volume(PV)of CO_(2),and the CO_(2) storage capacity will be larger.

关键词： reservoir saturation refined

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

一种新型树枝分子的合成及其荧光性质

有机化学 2012年第10期32卷 1958-1964页

作者：罗蔓利钱鹰东南大学化学化工学院南京211189

以芳香八碘代物1,2,4,5-四{4-[N,N-二(4-碘苯氨基)]苯乙烯基}苯(TPABI)和4-乙烯基吡啶在钯催化下进行多位点Heck反应,制备得到一种新型荧光树枝分子1,2,4,5-四{4-[N,N-二(4-吡啶乙烯基)苯氨基]苯乙烯基}苯(TPABPy).目标化合物的结构经... 详细信息

以芳香八碘代物1,2,4,5-四{4-[N,N-二(4-碘苯氨基)]苯乙烯基}苯(TPABI)和4-乙烯基吡啶在钯催化下进行多位点Heck反应,制备得到一种新型荧光树枝分子1,2,4,5-四{4-[N,N-二(4-吡啶乙烯基)苯氨基]苯乙烯基}苯(TPABPy).目标化合物的结构经过红外光谱、核磁共振谱、高分辨质谱确认.树枝分子TPABPy在THF,乙酸乙酯,二氯甲烷,DMF,DMSO溶液中的最大发射波长分别为490,493,510,536,543 ***’s位移分别为4717(THF),4969(乙酸乙酯),5330(二氯甲烷),6281(DMF),6398(DMSO)cm-1.在THF和DMF中的荧光量子产率分别为0.87和0.72.在THF和乙酸乙酯中的荧光寿命分别为1.29和1.77 ns.研究了树枝分子TPABPy在不同pH值下的荧光行为,在pH为2.41时荧光强度最大.用循环伏安法测定了分子的前线轨道能级,HOMO轨道能级为-4.94 eV,LUMO轨道能级为-2.38 eV.

关键词：荧光树枝分子多位点Heck反应溶剂效应荧光寿命前线轨道

CASCADING A110s AND DETERMINING PSR's PARAMETERS

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 1994年第3期11卷 229-237页

作者：张恭清罗曼丽 Institute of Automation Academia Sinica Beijing 100080

This paper discusses severed ways of cascading A110s for more powerful systolic convolution arrays, and gives general rules for determining the parameters of the programmable shift registers (PSRs). Because the explicit expressions of convolution and constraint for systolic processing are used for analysis, the derivation process is conceptually clear and therefore easy to be understood.

关键词： Signal processing Image processing Systolic array Convolution Cascading

在线全文

学校读者我要写书评

暂无评论

海域规范管理方法论

中国海洋法学评论（中英文版） 2005年第1期 126-141页

作者：罗曼丽西南政法大学

2002年1月1日生效的《中华人民共和国海域使用管理法》规定了海域国家所有制度和不完整的海域使用权流转制度。但是，该法的规定比较原则、可操作性差,如何真正实现该法的立法初衷是实践中急需研究解决的问题。本文通过对我国目前海域... 详细信息

2002年1月1日生效的《中华人民共和国海域使用管理法》规定了海域国家所有制度和不完整的海域使用权流转制度。但是，该法的规定比较原则、可操作性差,如何真正实现该法的立法初衷是实践中急需研究解决的问题。本文通过对我国目前海域使用权一级市场确权发证、二级市场流转现状的介绍以及对两个层面上存在问题的分析，提出对海域进行规范管理的建设性意见，在此基础上概括了为实现上述目的当前必须做的配套工作，力图建构我国科学、合理的海域权属管理制度，从而为发展我国海洋经济提供制度支持。

关键词：海域不动产审批流转

Optimal regulation of flexible loads in rural residential buildings considering mobile batteries:A case study in Shaanxi Province

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Building Simulation 2024年第7期17卷 1065-1083页

作者： Xi luo WenceShi School of Building Services Science and Engineering Xian University of Architecture and Technology(XAUAT)Xi'an 710055China State Key Laboratory of Green Building Xi'an 710055China

While the grid-connected capacity of rural household photovoltaics is increasing rapidly,achieving dynamic supply-demand matching despite fluctuations in solar energy is *** the rapid development of rural electrification,battery-powered technologies,such as electric vehicles and electric agricultural machinery,are becoming increasingly popular in rural *** this context,utilizing idle mobile batteries to assist in energy storage for rural residential buildings offers a new way to solve the problem of dynamic supply-demand *** this study,a field survey was conducted on several typical fruit-growing villages in the Central Shaanxi Plain in Shaanxi Province of *** rural households were selected to calculate the electricity loads of the residential buildings,with due consideration to the intervention of mobile *** the premise of installing 3 kW household photovoltaic systems in rural households,an economical efficiency-oriented model was built for the optimal regulation of flexible *** results were compared in the context of two patterns of electricity consumption,i.e.,unidirectional charging of mobile batteries from buildings and bidirectional charging and discharging between mobile batteries and *** bidirectional pattern significantly increased the photovoltaic consumption of typical rural households on various typical ***,during both scenarios of not implementing time-of-use and implementing time-of-use,the typical day of the winter slack farming season exhibited the best photovoltaic consumption effect among all types of typical ***,the bidirectional pattern also result in a significant increase in the annual electricity sales revenues for typical rural households.

关键词： demand-side response flexible load mobile battery household photovoltaics

Energy consumption simulations of rural residential buildings considering differences in energy use behavior among family members

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Building Simulation 2024年第8期17卷 1335-1358页

作者： Xi luo Lina Du School of Building Services Science and Engineering Xi'an University of Architecture and Technology(XAUAT)Xi'an 710055China State Key Laboratory of Green Building Xi'an 710055China

The“average occupant”methodology is widely used in energy consumption simulations of residential buildings;however,it fails to consider the differences in energy use behavior among family *** on a field survey on the Central Shaanxi Plain,to identify the energy use behavior patterns of typical families,a stochastic energy use behavior model considering differences in energy use behavior among family members was proposed,to improve the accuracy of energy consumption simulations of residential *** results indicated that the surveyed rural families could be classified into the following four types depending on specific energy use behavior patterns:families of one elderly couple,families of one middle-aged couple,families of one elderly couple and one child,and families of one couple and one ***,on typical summer days,the results of daily building energy consumption simulation obtained by the“average occupant”methodology were 25.39%and 28%lower than the simulation results obtained by the model proposed in this study for families of one elderly couple and families of one middle-aged couple,and 13.05%and 23.05%higher for families of one elderly couple and one child,and families of one couple and one *** typical winter days,for the four types of families,the results of daily building energy consumption simulation obtained by the“average occupant”methodology were 21.69%,10.84%,1.21%,and 8.39%lower than the simulation results obtained by the model proposed in this study,respectively.

关键词： typical energy use behavior pattern differences in occupant behavior building energy consumption simulation stochastic energy use behavior simulation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

关于对渔船投资人集合实行企业化管理的思考

现代渔业信息 2005年第5期20卷 6-9页

作者：罗曼丽宁波市海洋与渔业局政策法规处

随着经济的发展和人们投资意识的增强,渔船投资主体多元化趋势日益明显。投资主体的多元化对传统的渔船产权管理体制提出了挑战。本文通过对渔船产权管理体制现状以及实践中存在问题的说明,在进行法理分析的基础上提出了对渔船投资人集... 详细信息

随着经济的发展和人们投资意识的增强,渔船投资主体多元化趋势日益明显。投资主体的多元化对传统的渔船产权管理体制提出了挑战。本文通过对渔船产权管理体制现状以及实践中存在问题的说明,在进行法理分析的基础上提出了对渔船投资人集合实行企业化管理的建议。

关键词：企业化管理渔船集合投资主体多元化管理体制法理分析产权经济