Results 21 to 30 of about 4,736 (178)

负载二氢槲皮素的甘油解猪油微乳液 体外抗氧化性及消化性Antioxidant activity and digestibility in vitro of glycerolized lard microemulsion loaded with dihydroquercetin

open access: yesZhongguo youzhi, 2022
为解决含甘油解猪油的食品在贮藏过程中易被氧化的问题,向甘油解猪油中加入二氢槲皮素,制备负载二氢槲皮素的甘油解猪油微乳液,通过体外模型测定该微乳液的还原力以及对DPPH、ABTS和羟自由基的清除能力,探讨含二氢槲皮素甘油解猪油微乳液的体外抗氧化性,同时通过体外模拟胃肠消化测定其消化性。结果表明:该微乳液具有一定的还原力及DPPH、ABTS、羟自由基的清除能力,且还原力及自由基清除能力均随着二氢槲皮素负载量的增加而升高,相关性显著;该微乳液经胃消化2 h后二氢槲皮素的保留率为79.25 ...
李杨,刘丽美,唐志国,马丽媛,刘东琦,张雨迪 LI Yang,LIU Limei,TANG Zhiguo,MA Liyuan,LIU Dongqi,ZHANG Yudi
doaj   +1 more source

Collaborative Control Method for Offshore Wind Farms with Friendly Access to Hydrogen Energy Systems During Typhoons [PDF]

open access: yes, 2023
[Introduction] With the steady progress of the carbon peaking and carbon neutrality goals, more and more distributed renewable energy is connected to the power grid.
Enyan XIE   +4 more
core   +1 more source

电-氢-碳耦合促进新能源基地开发模式研究 [PDF]

open access: yes全球能源互联网
实现全球“碳中和”,核心是推动能源绿色低碳转型,重要举措是推动新能源大规模基地化开发和高效消纳。针对偏远、水电不足地区新能源基地开发面临的低碳调节手段不足、电网配置和消纳能力有限、“风光火”开发模式降碳难等问题与挑战,提出了基于电-氢-碳协同的新能源基地发展思路和开发模式,将氢基产业发展与新能源开发消纳、煤电灵活低碳转型深度融合,同时结合绿氢、绿氨、绿色甲醇等氢基产品制取工艺的技术发展和调节能力提升,量化分析绿电与绿色氢/氨/甲醇在终端消费市场的竞争力及经济效益 ...
刘泽洪   +4 more
doaj   +1 more source

Research on Application of Hydrogen in Power Industry Under “Double Carbon” Circumstance [PDF]

open access: yes, 2022
Hydrogen is a secondary clean energy which can be stored, moved and controlled. It is an ideal power energy carrier. The development and utilization of hydrogen as an energy source is an important means to tackle the climate change, ensure the national ...
ZHANG Yanhong, ZHU Kai
core   +1 more source

基于CNN-Bi-LSTM功率预测的海岛综合能源系统优化调度 [PDF]

open access: yes全球能源互联网, 2023
合理构建海岛综合能源系统对沿海能源清洁化转型意义重大,其优化调度更是实现海岛能源供需平衡的有效途径。为此,提出了一种考虑风光功率预测的海岛综合能源系统优化调度方法。首先,搭建包含氢能设备、海水源热泵、海水淡化装置、波浪能发电装置等新型能源转换设备的系统模型。其次,海上气候多变会导致新能源发电不稳定,故采用含环境变量重要性排序的一维卷积神经网络和双向长短时记忆神经网络(convolutional neural network-bi-directional long short-term memory ...
王润治   +4 more
doaj   +1 more source

储氢单元在天然气管网中的定容优化研究 [PDF]

open access: yes全球能源互联网, 2022
针对当前碳排放量过高的问题,在保证安全的前提下,将P2H装置制得的氢气掺混进入天然气管网进行运输,是当前降低碳排放的有效途径。文章建立了考虑储氢单元的天然气管网运行的混合整数线性规划模型,以最小化系统运行成本和最大化系统碳减排量为目标函数,考虑储氢单元、P2H制氢量和天然气管网运行约束,采用了ε约束法对多目标规划问题求解,确定了不同减排目标下电转氢气装置和储氢罐在天然气管网中的配置策略。考虑了天然气管网中含储氢单元和不含储氢单元两种运行场景,通过算例分析不同场景下的碳减排量和运行成本 ...
周军, 李帅帅, 周轩, 梁光川
doaj   +1 more source

Catalytic Activity of Ni/CeO2-ZrO2@SiO2Core-Shell Structure for Steam Reforming of Toluene [PDF]

open access: yes, 2017
本文通过结构导向法制备一系列不同壳层厚度的Ni/Ce-ZrO2@SiO2催化剂,并将其应用到生物质焦油模型甲苯的蒸汽重整反应中。采用XRD、SEM、TEM和XPS等对催化剂的形貌及结构进行表征。结果显示,多孔SiO2层的存在能显著提高催化剂的性能,能通过修饰Ni的能带结构,改善Ni的本征活性并改变产物分布。SiO2壳层厚度对催化剂的性能也有影响,在一系列不同壳层厚度的Ni/Ce-ZrO2@SiO2催化剂中,壳–核质量比为0.5的催化剂表现出最高的催化活性,该催化剂在650℃和700 ...
张亮, 赵效勇, 闫常峰
core   +1 more source

Mechanism of phenylalanine damage induced by hydroxyl radicals in water-liquid phase environment(水液相环境下羟自由基诱导的苯丙氨酸分子损伤机理)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2019
在MP2/ SMD/6-311++g(3df,2pd)//WB97X-D/SMD/6-311++G(d,p)理论水平上,研究了水液相环境下羟自由基诱导的苯丙氨酸分子的损伤机理。研究发现,羟自由基(水分子簇) 抽取α-氢、β-氢、苯环-氢以及羟自由基与苯环加成均可致苯丙氨酸分子损伤。势能面计算表明,羟自由基(水分子簇) 抽取α-氢和β-氢的最低能垒分别为68.4 和89.3 kJ·mol-1,羟自由基抽取苯环-氢的最低能垒为111.6 kJ·mol-1,羟自由基加成到苯环不同位点碳的能垒大约在106.5 ...
PANYu(潘宇)   +6 more
doaj   +1 more source

Research status and progress of hydrogen embrittlement of hydrogen pipelines [PDF]

open access: yes, 2023
Hydrogen transportation through pipelines has extremely high economic value in realizing the development of the hydrogen energy industry and promoting efficient energy utilization.
Hongliang MING, Jianqiu WANG, Jianwei DU
core   +1 more source

Study on the preparation and property of Pt/Ce0.5M0.5O2 (M = Zr,Ti) catalysts with high hydrothermal stability for hydrodeoxygenation(高水热稳定性加氢脱氧催化剂Pt/Ce0.5 M0.5O2 (M = Zr,Ti)的制备及其性能研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2018
分别采用共沉淀法和溶胶凝胶法制备了具有高水热稳定性的Ce0.5M0.5O2 (M=Zr,Ti)载体,并通过浸渍法制得高分散Pt/Ce0.5M0.5O2(M=Zr,Ti)催化剂,分析了短链脂肪醇作为氢供体用于香兰素加氢脱氧反应的催化性能.实验结果表明,复合氧化物催化剂Pt/Ce0.5M0.5O2(M=Zr,Ti)具有高的水热稳定性和优良的加氢脱氧活性,且Pt/Ce0.5Zr0.5O2较Pt/Ce0.5Ti0.5O2的催化性能更胜一筹,催化剂的加氢脱氧性能与其表面的酸性质以及贵金属Pt在载体上的高度分散有关.
CHANGAo(常傲)   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy