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向日葵盘天然低酯化果胶联合氯化钙制备凝固型酸奶的工艺优化

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粮食与油脂 2024年第1期37卷 116-121页

作者：彭晓夏和雨露王哲高蕊蕊逯晓青窦志芳山西中医药大学基础医学院山西晋中030619

从向日葵盘中提取获得天然的低酯化果胶(LAHP),并将LAHP与CaCl_(2),复配作为稳定剂制备凝固型酸奶。采用单因素和正交试验对酸奶的制备工艺进行优化。结果显示:LAHP主要由半乳糖醛酸(80.62%±2.44%)构成,其干燥减重、酸不溶灰分、二氧... 详细信息

从向日葵盘中提取获得天然的低酯化果胶(LAHP),并将LAHP与CaCl_(2),复配作为稳定剂制备凝固型酸奶。采用单因素和正交试验对酸奶的制备工艺进行优化。结果显示:LAHP主要由半乳糖醛酸(80.62%±2.44%)构成,其干燥减重、酸不溶灰分、二氧化硫及铅含量均符合国家标准的要求,平均相对分子质量为2.12×10^(5),酯化度为25.33%±1.15%。凝固型酸奶的最佳生产工艺条件为以鲜奶质量为基准,LAHP添加量0.6%、CaCl_(2),添加量0.56%、白砂糖添加量8%、发酵时间8h、发酵剂接种量0.2%、发酵温度42℃。在此条件下制备的凝固型酸奶呈乳白色,无乳清析出,口感细腻醇厚,感官评分最高,理化及微生物指标均符合国家标准的要求。

关键词：向日葵盘低酯化果胶凝固型酸奶稳定剂工艺优化

Facile preparation of Fe/N-based biomass porous carbon composite towards enhancing the thermal decomposition of DAP-4

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Defence Technology（防务技术） 2024年第1期31卷 288-294页

作者： Er-hai An xiao-xia Li Cun-juan Yu Ying-xin Tan Zi-jun Fan Qing-xia Li peng Deng Xiong Cao School of Environment and Safety Engineering North University of ChinaTaiyuan030051PR China College of Safety and Emergency Management Engineering Taiyuan University of Science and TechnologyTaiyuan030024PR China

Fe/N-based biomass porous carbon composite(Fe/N-p Carbon) was prepared by a facile high-temperature carbonization method from biomass,and the effect of Fe/N-p Carbon on the thermal decomposition of energetic molecular perovskite-based material DAP-4 was *** porous carbonaceous materials was considered as the micro/nano support layers for in situ deposition of Fe/N ***/Np Carbon was prepared simply by the high-temperature carbonization *** was found that it showed the inherent catalysis properties for thermal decomposition of *** heat release of DAP-4/Fe/N-p Carbon by DSC curves tested had increased slightly,compared from DAP-4/Fe/N-p *** decomposition temperature peak of DAP-4 at the presence of Fe/N-p Carbon had reduced by 79°C from384.4°C(pure DAP-4) to 305.4°C(DAP-4/Fe/N-p Carbon-3).The apparent activation energy of DAP-4thermal decomposition also had decreased by 29.1 J/*** possible catalytic decomposition mechanism of DAP-4 with Fe/N-p Carbon was proposed.

关键词： Biomass materials Porous carbon DAP-4 Thermal decomposition Facile method

Robust optimal dispatch strategy of integrated energy system considering CHP-P2G-CCS

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Global Energy Interconnection 2024年第1期7卷 14-24页

作者： Bin Zhang Yihui xia xiaotao peng School of Electrical Engineering Naval University of EngineeringWuhan 430000P.R.China School of Electrical Engineering Wuhan UniversityWuhan 430072P.R.China

Integrated energy systems(IESs)can improve energy efficiency and reduce carbon emissions,essential for achieving peak carbon emissions and carbon *** study investigated the characteristics of the CHP model considering P2G and carbon capture systems,and a two-stage robust optimization model of the electricity-heat-gascold integrated energy system was ***,a CHP model considering the P2G and carbon capture system was established,and the electric-thermal coupling characteristics and P2G capacity constraints of the model were derived,which proved that the model could weaken the electric-thermal coupling characteristics,increase the electric power regulation range,and reduce carbon ***,a two-stage robust optimal scheduling model of an IES was constructed,in which the objective function in the day-ahead scheduling stage was to minimize the start-up and shutdown *** objective function in the real-time scheduling stage was to minimize the equipment operating costs,carbon emission costs,wind curtailment,and solar curtailment costs,considering multiple ***,after the objective function is linearized with a ψ-piecewise method,the model is solved based on the C&CG *** results show that the proposed model can effectively absorb renewable energy and reduce the total cost of the system.

关键词： Combined heat and power Power-to-gas Carbon capture system Integrated energy system Robust optimization

Prediction and scheduling of multi-energy microgrid based on BiGRU self-attention mechanism and LQPSO

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Global Energy Interconnection 2024年第3期7卷 347-361页

作者： Yuchen Duan peng Li Jing xia School of Automation and Intelligence Beijing Jiaotong UniversityBeijing 100044P.R.China Goldwind Science&Technology Co.Ltd. Beijing 100176P.R.China

To predict renewable energy sources such as solar power in microgrids more accurately,a hybrid power prediction method is presented in this ***,the self-attention mechanism is introduced based on a bidirectional gated recurrent neural network(BiGRU)to explore the time-series characteristics of solar power output and consider the influence of different time nodes on the prediction ***,an improved quantum particle swarm optimization(QPSO)algorithm is proposed to optimize the hyperparameters of the combined prediction *** final proposed LQPSO-BiGRU-self-attention hybrid model can predict solar power more *** addition,considering the coordinated utilization of various energy sources such as electricity,hydrogen,and renewable energy,a multi-objective optimization model that considers both economic and environmental costs was constructed.A two-stage adaptive multi-objective quantum particle swarm optimization algorithm aided by a Lévy flight,named MO-LQPSO,was proposed for the comprehensive optimal scheduling of a multi-energy microgrid *** algorithm effectively balances the global and local search capabilities and enhances the solution of complex nonlinear *** effectiveness and superiority of the proposed scheme are verified through comparative simulations.

关键词： Microgrid Bidirectional gated recurrent unit Self-attention Lévy-quantum particle swarm optimization Multi-objective optimization

Revisiting the sodium-ion storage capability of hard carbon in carbonate-based electrolytes via a sodium-metal-free protocol

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Science China Chemistry 2024年第7期67卷 2240-2247页

作者： Gaopan Liu Yanbing Mo Jiawei Chen Yu peng xiao Zhu Fei Wang xiaoli Dong Yongyao xia Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New EnergyLaboratory of Advanced MaterialsFudan UniversityShanghai 200438China

Common evaluation methodology of sodium(Na)-containing two-electrode or three-electrode configurations overlooks the interference from highly reactive Na metal,leading to the underestimation or inconsistent performance of low-potential hard carbon(HC)***,the trap of Na metal was systematically investigated with or without applied current,uncovering its inadequacy as the reference or counter electrode in different configurations.A Na-metal-free three-electrode protocol is proposed for evaluating the actual Na^(+)-storage capability of the typical low-potential HC *** avoiding Na crosstalk and precisely controlling the working electrode's potential,the actual electrochemical performance of HC in the carbonate esterbased electrolyte can be recognized with high capacity of 222 mAh g^(-1)at 2 C and 113 mAh g^(-1)at 5 C,correcting the misunderstanding of the inferior performance of HC in coin-type half cells(68%and 50%undervaluation at 2 C and 5 C,respectively).The advanced protocol is expected to reduce misunderstandings or underestimation due to evaluation methods and to guide the development of high-performance battery materials.

关键词： highly reactive sodium potential drift carbonate ester sodium-metal-free protocol sodium storage capability

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集体经营性建设用地入市中的环境法律规制

北京社会科学 2022年第3期 88-99页

作者：彭小霞江苏师范大学法学院

集体经营性建设用地入市中出现农地资源破坏、农村环境污染等环境问题,主要源于集体经营性建设用地入市中环境规制缺失、环境监管体制存在不足。在现实必要性上,集体经营性建设用地入市中环境问题的法律规制是维护农业生态安全的需要、... 详细信息

集体经营性建设用地入市中出现农地资源破坏、农村环境污染等环境问题,主要源于集体经营性建设用地入市中环境规制缺失、环境监管体制存在不足。在现实必要性上,集体经营性建设用地入市中环境问题的法律规制是维护农业生态安全的需要、促进集体经营性建设用地入市流转可持续推进的需要以及保障农民环境权益需要;在理论正当性上,环境正义理论为环境问题的法律规制提供理论支撑。基于此,应设计相应的理念、体制和机制贯穿环境问题规制的全过程,形成集体经营性建设用地入市中环境问题法律规制的基本进路;在制度架构方面,探索建立集体经营性建设用地入市的环境影响评估制度、环境风险预警制度、突发环境事件应急制度和环境损害修复制度。

关键词：集体经营性建设用地环境法律规制环境正义理论

The Geology, Fluid Inclusions, and O-S Isotopes of the Mibei Gold Deposit, Hunan Province, Southern China

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 992-1006页

作者： XUE Wenhao LIANG Yayun LI xiaofeng LI Mingyi XIE Wenbo peng Xue xia Rui HE Hongsheng xiao Jincheng School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Geophysical and Geochemical Survey Institute of Hunan Changsha 410116China New Geological Energy Exploration and Development Engineering Technology Research Center of Hunan Changsha 410116China State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences(Beijing)Beijing 100083China Comprehensive Survey Command Center for Natural Resources China Geological SurveyBeijing 100055China

The Mibei gold deposit,located in the southwestern part of the Xuefengshan uplift zone,the middle section of the Jiangnan orogenic belt in southern China,has estimated gold resources of approximately seven *** deposit is primarily a quartz vein-type gold deposit,with ore bodies occurring mainly within Neoproterozoic *** main metallic minerals in the ore are pyrite,chalcopyrite,and *** this study,the petrography and microthermometry of ore-forming fluid inclusions,oxygen isotopes of gold-bearing quartz,and sulfur isotopes of goldbearing sulfides and arsenopyrite were *** types of fluid inclusions were identified:type Ⅰa three-phase inclusions comprising vapor and two phases of liquids(V_(CO_(2))+L_(CO_(2))+L_(H2O)),type Ⅰb two-phase liquids(L_(CO_(2))+L_(H2O)),typeⅡ two-phase vapor-rich inclusions(V/V+L> 50%),and type Ⅲ pure liquid *** Ⅰ inclusions were heated uniformly to the liquid phase,type Ⅱ inclusions were heated uniformly to the gas phase,and type Ⅲ inclusions were heated without *** general,the temperature range of homogenization to liquid phase of fluid inclusions in the Mibei gold deposit is 204-227℃.The salinity of the inclusion ranges from 4.6 to 12.2 wt% NaCl *** δ~(18)O_(SMOW) of gold-bearing quartz varies from 16.9‰ to 17.5‰.The δ~(18)O_(H2O) of gold-bearing quartz are varied from 6.5‰ to 7.5‰.The δ~(34)S values of gold-bearing pyrite range from 1.7‰ to 6.8‰.The δ~(34)S values of gold-bearing arsenopy rite range from 5.6%o to 5.9‰.Theδ~(34)S values of pyrite from wall rocks slate range from 6.4‰ to 11.6‰.This evidence implies that the ore-forming fluids of the Mibei gold deposit originated from magmatic-hydrothermal processes,mixing with minor S from the surrounding *** with the evolution of the Jiangnan orogenic belt,due to the magmatic and tectonic activities of the Xuefengshan uplift during the Caledonian period,the fault seal mechanism controlled the ore-forming p

关键词： ore-forming fluid ore genesis Mibei gold deposit Xuefengshan uplift zone Jiangnan orogenic belt

Access to Orphan Drugs is a Challenge for Sustainable Management of Cystinosis in China

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Chinese Medical Journal 2018年第19期131卷 2388-2389页

作者： xiao-Qiao Li xiao-xia peng Chun-Xiu Gong Beijing Key Laboratory for Genetics of Birth Defects Center of Endocrinology Genetics and Metabolism Beijing Children's Hospital The Capital Medical University National Center for Children's Health Beijing 100045 China Center of Clinical Epidemiology and Evidence-Based Medicine Beijing Children's Hospital Capital Medical University National Center for Children's Health Beijing 100045 China Department of Epidemiology and Biostatistics School of Public Health Capital Medical University Beijing 100045 China

As a rare autosomal-recessive metabolic disorder, cystinosis is caused by defective transport of cystine across the lysosomal membrane. Once the diagnosis of cystinosis is confirmed, specific treatment with cysteamine, an aminothiol, should be applied to the patient as soon as possible in order to preserve renal function and improve growth in affected *** is the only specific drug approved by the Food and Drug Administration for cystinosis. Although it cannot reverse the existing kidney damage, it was reported that 1 7 patients treated with cysteamine for 7 years recovered almost normal kidney function and, more importantly, they grew *** report suggested that cysteamine treatment could postpone end-stage kidney damage for 10-20 years. However, the immediate challenge lies in the access to the necessary medication in China for the management ofcystinosis. Here, we report the case of two sibling boys with cystinosis in order to raise awareness to the international community about the urgent need for worldwide policy and action for such rare diseases.

关键词： LEGISLATION

Postrandomization Confounding Challenges the Applicability of Randomized Clinical Trials in Comparative Effectiveness Research

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Chinese Medical Journal 2017年第8期130卷 993-996页

作者： Ya-Guang peng xiao-Lu Nie Jing-Jing Feng xiao-xia peng Center for Clinical Epidemiology and Evidence-based Medicine Beijing Children's Hospital Capital Medical University Beijing 100045 China Key Laboratory of Major Diseases in Children Ministry of Education Beijing 100045 China Center for Medical Safety and Risk Administration National Institute of Hospital Administration Beijing 100091 China

Different from trials for regulatory approvals of new interventions aimed to test the efficacy, comparative effectiveness research （CER） is the direct comparison of existing health-care interventions （compared with... 详细信息

关键词： Comparative Effectiveness Research Postrandomization Confounding Randomized Clinical Trials