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FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING 2024年第8期18卷 85-0页

作者： Xian, Xiaoling Li, Biying Feng, Shiyong Huang, Jiale fu, xinyuan Wu, Ting Lin, Xiaoqing Guangdong Univ Technol Sch Chem Engn & Light Ind Guangdong Prov Key Lab Plant Resources Biorefinery Guangzhou 510006 Peoples R China

In the present study, a sustainable pretreatment methodology combining liquid hot water and deep eutectic solvent is proposed for the efficient fractionation of hemicellulose, cellulose, and lignin from sugarcane bagasse, thereby facilitating the comprehensive utilization of both C5 and C6 sugars. The application of this combined pretreatment strategy to sugarcane bagasse led to notable enhancements in enzymatic saccharification and subsequent fermentation. Experiment results demonstrate that liquid hot water-deep eutectic solvent pretreatment yielded 85.05 +/- 0.66 gL-1 of total fermentable sugar (glucose: 60.96 +/- 0.21 gL-1, xylose: 24.09 +/- 0.87 gL-1) through enzymatic saccharification of sugarcane bagasse. furthermore, fermentation of the pretreated sugarcane bagasse hydrolysate yielded 34.33 +/- 3.15 gL-1 of bioethanol. These findings confirm the effectiveness of liquid hot water-deep eutectic solvent pretreatment in separating lignocellulosic components, thus presenting a sustainable and promising pretreatment method for maximizing the valuable utilization of biomass resources.

关键词： sugar cane bagasse synergistic pretreatment enzymatic saccharification ethanol PSEUDO-LIGNIN FORMATION CANE BAGASSE BIOfuELS

空调温控负荷集群参与光伏消纳的潜力评估与互动框架

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现代电力 2024年第3期41卷 479-489页

作者：陈璨杜维柱白恺孙贝贝孙靓付新园吴俊勇国网冀北电力有限公司电力科学研究院北京市西城区100045 国网冀北电力有限公司北京市西城区100052 北京交通大学电气工程学院北京市海淀区100044

空调温控负荷集群作为当下最具调节潜力的需求侧响应资源之一,在削峰、填谷、分布式光伏消纳和电网调控中将发挥重要作用。因此,提出一种电力市场环境下,基于数据驱动和深度置信网络的空调温控负荷集群参与分布式光伏消纳的可调节潜力... 详细信息

空调温控负荷集群作为当下最具调节潜力的需求侧响应资源之一,在削峰、填谷、分布式光伏消纳和电网调控中将发挥重要作用。因此,提出一种电力市场环境下,基于数据驱动和深度置信网络的空调温控负荷集群参与分布式光伏消纳的可调节潜力评估与互动框架。首先,利用数据驱动构建了基于深度置信网络的可调节潜力评估模型,实时输出温控负荷集群的可调节潜力;其次,考虑功率调整量在一定范围内变化的前提下,构建基于深度置信网络的需求互动模型,对温控负荷集群进行实时温度调控。最后,以冀北地区某10kV馈线作为实际算例进行分析,结果表明:所提框架能够充分利用空调温控负荷集群的可调节潜力,参与分布式光伏的消纳。

关键词：空调温控负荷集群数据驱动深度置信网络潜力评估需求互动

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高效液相色谱法测定化妆品中海藻糖的含量

香料香精化妆品 2024年第3期 191-194页

作者：王丁林周耀斌付昕媛上海市质量监督检验技术研究院/国家保洁产品质量检验检测中心上海200233

通过对影响海藻糖测定条件(流动相、色谱柱、提取溶剂、超声时间)的研究,建立了高效液相色谱法快速测定化妆品中海藻糖含量的分析方法。化妆品中海藻糖经体积比1∶9的乙腈水溶液超声提取20 min后,使用体积比3∶1的乙腈-水(含体积分数0.2... 详细信息

通过对影响海藻糖测定条件(流动相、色谱柱、提取溶剂、超声时间)的研究,建立了高效液相色谱法快速测定化妆品中海藻糖含量的分析方法。化妆品中海藻糖经体积比1∶9的乙腈水溶液超声提取20 min后,使用体积比3∶1的乙腈-水(含体积分数0.2%三乙胺)溶液作为流动相等度洗脱,用Waters Xbrige-NH2氨基柱(250 mm×4.6mm×5μm)进行分离检测化妆品中海藻糖。该方法的线性范围为0.1~5 mg/mL,检出限为0.33 g/kg,定量限为1.0g/kg,加标回收率为92.4%~106%,相对标准偏差<5%。

关键词：化妆品海藻糖高效液相色谱法测定

高效液相色谱法测定化妆品中羟基积雪草苷和积雪草苷的含量

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香料香精化妆品 2024年第2期 169-173页

作者：聂磊付昕媛周耀斌李文畅薛丽芝傅颖上海市质量监督检验技术研究院上海200233 上海食品科技学校上海201599 上海市医药学校上海200135

建立了一种使用高效液相色谱测定化妆品中羟基积雪草苷和积雪草苷含量的方法。样品经提取液超声提取后,用Acutfex PA-C_(18)色谱柱(250 mm×4.6 mm×5μm)分离,以体积比2:2:6的甲醇-乙腈-水作为流动相等度洗脱,流速1.0 mL/min,柱温35℃... 详细信息

建立了一种使用高效液相色谱测定化妆品中羟基积雪草苷和积雪草苷含量的方法。样品经提取液超声提取后,用Acutfex PA-C_(18)色谱柱(250 mm×4.6 mm×5μm)分离,以体积比2:2:6的甲醇-乙腈-水作为流动相等度洗脱,流速1.0 mL/min,柱温35℃,检测波长205 nm。采用外标法测定,结果表明,积雪草苷和羟基积雪草苷在质量浓度5~100μg/mL内线性关系良好,方法的检出限为质量分数0.0015%,定量限为质量分数0.005%。在不同类型的空白化妆品(水类、乳类、膏霜类)中进行加标回收试验,方法的回收率为82.8%~106%,相对标准偏差为0.94%~4.28%。该方法前处理简单,分离效率高,重复性好,准确度和精密度高,适用于化妆品中积雪草苷和羟基积雪草苷的测定。

关键词：化妆品羟基积雪草苷积雪草苷高效液相色谱

Gria:an efficient deterministic concurrency control protocol

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Frontiers of Computer Science 2024年第4期18卷 25-37页

作者： xinyuan WANG Yun PENG Hejiao HUANG School of Computer Science and Technology Harbin Institute of TechnologyShenzhen 518055China Institute of Artificial Intelligence and Blockchain Guangzhou UniversityGuangzhou 510006China

Deterministic databases are able to reduce coordination costs in a *** property has fostered a significant interest in the design of efficient deterministic concurrency control ***,the state-of-the-art deterministic concurrency control protocol Aria has three ***,it is impractical to configure a suitable batch size when the read-write set is ***,Aria running in low-concurrency scenarios,e.g.,a single-thread scenario,suffers from the same conflicts as running in high-concurrency ***,the single-version schema brings write-after-write *** address these issues,we propose Gria,an efficient deterministic concurrency control *** has the following ***,the batch size of Gria is ***,Gria’s conflict probability in low-concurrency scenarios is lower than that in high-concurrency ***,Gria has no write-after-write conflicts by adopting a multi-version *** further reduce conflicts,we propose two optimizations:a reordering mechanism as well as a rechecking *** evaluation result on two popular benchmarks shows that Gria outperforms Aria by 13x.

关键词： deterministic concurrency control transaction processing

Design Strategies for Aqueous Zinc Metal Batteries with High Zinc Utilization: From Metal Anodes to Anode-Free Structures

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Nano-Micro Letters 2024年第4期16卷 305-349页

作者： Xianfu Zhang Long Zhang xinyuan Jia Wen Song Yongchang Liu School of Materials Science and Engineering University of Science and Technology Beijing30 College RoadBeijing 100083People’s Republic of China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyState Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China

Aqueous zinc metal batteries(AZMBs)are promising candidates for next-generation energy storage due to the excellent safety, environmental friendliness, natural abundance, high theoretical specific capacity, and low redox potential of zinc(Zn) metal. However,several issues such as dendrite formation, hydrogen evolution, corrosion, and passivation of Zn metal anodes cause irreversible loss of the active materials. To solve these issues, researchers often use large amounts of excess Zn to ensure a continuous supply of active materials for Zn anodes. This leads to the ultralow utilization of Zn anodes and squanders the high energy density of AZMBs. Herein, the design strategies for AZMBs with high Zn utilization are discussed in depth, from utilizing thinner Zn foils to constructing anode-free structures with theoretical Zn utilization of 100%, which provides comprehensive guidelines for further research. Representative methods for calculating the depth of discharge of Zn anodes with different structures are first summarized. The reasonable modification strategies of Zn foil anodes, current collectors with pre-deposited Zn, and anode-free aqueous Zn metal batteries(AF-AZMBs) to improve Zn utilization are then detailed. In particular, the working mechanism of AF-AZMBs is systematically introduced. Finally, the challenges and perspectives for constructing high-utilization Zn anodes are presented.

关键词： Aqueous zinc metal batteries Zinc anodes High zinc utilization Depth of discharge Anode-free structures

Improving anammox activity and reactor start-up speed by using CO_(2)/NaHCO_(3) buffer

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Journal of Environmental Sciences 2024年第5期139卷 60-71页

作者： Shaoan Cheng Huahua Li xinyuan He Hua Chen Longxin Li State Key Laboratory of Clean Energy Utilization College of Energy EngineeringZhejiang UniversityHangzhou 310027China

Anammox bacteria grow slowly and can be affected by large pH *** suitable buffers could make the start-up of anammox reactors easy and *** this study,the effects of three kinds of buffers on the nitrogen removal and growth characteristics of anammox sludge were *** with CO_(2)/NaHCO_(3)buffer solution(CCBS)performed the best in nitrogen removal,while 4-(2-hydroxyerhyl)piperazine-1-ethanesulfonic acid(HEPES)and phosphate buffer solution(PBS)inhibited the anammox *** with 50 mmol/L CCBS could start up in 20 days,showing the specific anammox activity and anammox activity of 1.01±0.10 gN/(gVSS·day)and 0.83±0.06 kgN/(m^(3)·day),*** Kuenenia was the dominant anammox bacteria,with a relative abundance of 71.8%.Notably,anammox reactors could also start quickly by using 50 mmol/L CCBS under nonstrict anaerobic *** findings are meaningful for the quick start-up of engineered anammox reactors and prompt enrichment of anammox bacteria.

关键词： Anammox bacteria Buffer solution CO_(2)/NaHCO_(3) Physiological characteristics Microbial community shift

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定量分析物理课堂教学结构

物理教学 2021年第7期43卷 26-29页

作者：付馨媛南京市宁海中学江苏210009

本文利用ISM和量化统计等量化研究方法对成熟型教师的“加速度”常态课进行分析。分别探讨了课例中的课堂教学内容结构、教学行为时间特征以及片段教学中的内容逻辑结构与教学时序进程图的关系。本文在得出课例的课堂教学结构的有关信... 详细信息

本文利用ISM和量化统计等量化研究方法对成熟型教师的“加速度”常态课进行分析。分别探讨了课例中的课堂教学内容结构、教学行为时间特征以及片段教学中的内容逻辑结构与教学时序进程图的关系。本文在得出课例的课堂教学结构的有关信息的同时,也尝试性地为量化研究课堂教学结构提供新的视角。

关键词：课堂教学结构 ISM法教学行为对教学时序

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社会阶层信号及其对人际水平社会互动的影响

心理科学进展 2019年第7期27卷 1268-1274页

作者：郭容傅鑫媛中央财经大学社会与心理学院心理学系

社会阶层信号是指个体据以感知和判断他人社会阶层的一切线索,人们通过加工这些微妙的线索便能判断出他人的社会阶层,而他人的社会阶层在很大程度上决定着人们在人际水平的社会互动行为。以穿着打扮、面部特征和说话特点为例,说明社会... 详细信息

社会阶层信号是指个体据以感知和判断他人社会阶层的一切线索,人们通过加工这些微妙的线索便能判断出他人的社会阶层,而他人的社会阶层在很大程度上决定着人们在人际水平的社会互动行为。以穿着打扮、面部特征和说话特点为例,说明社会阶层信号对个体判断他人阶层的影响,在此基础上围绕社会交换、社会公平和社会认同这三个动机视角归纳了社会阶层信号对人际水平社会互动的不同影响。针对社会阶层信号本身,将来有必要探讨社会阶层信号功能弱化的问题;由于社会阶层信号与社会阶层这一概念的相关度较高,未来研究有必要阐述二者的联系与区别;鉴于目前少有研究考察第三方的社会阶层信号如何影响人际水平社会互动的问题,探索互动中第三方社会阶层信号的影响及其机制将会是对社会阶层心理学研究的一个重要推进。

关键词：社会阶层信号人际水平社会互动社会交换社会公平社会认同

Pushing the frontiers: Chip-based detection based on micro-and nano-structures

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Chinese Chemical Letters 2024年第4期35卷 86-98页

作者： Meihui Liu xinyuan Zhou Xiao Li Zhenjie Xue Tie Wang Tianjin Key Laboratory of Life and Health Detection Life and Health Intelligent Research InstituteTianjin University of TechnologyTianjin 300384China

Changes in trace substances in human metabolites, which are related to disease processes and health status, can serve as chemical markers for disease diagnosis and symptom monitoring. Real-time online detection is an inevitable trend for the future of health monitoring, and the construction of chips for detection faces major challenges. The response of sensors often fails to meet the requirements for chipbased detection of trace substances due to the low efficiency of interfacial heterogeneous reactions, necessitating a rational design approach for micro-and nano-structures to improve sensor performance with respect to sensitivity and detection limits. This review focuses on the influence of micro-and nanostructures that used in chip on sensing. Firstly, this review categorizes sensors into chemiresistors, electrochemical sensors, fluorescence sensors, and surface enhanced Raman scattering(SERS) sensors based on their sensing principle, which have significant applications in disease diagnosis. Subsequently, commencing from the application requirements in the field of sensing, this review focuses on the different structures of nanoparticle(NP) assemblies, including wire, layered, core-shell, hollow, concave and deformable structures. These structures change in the size, shape, and morphology of conventional structures to achieve characteristics such as ordered alignment, high specific surface area, space limitation,vertical diffusion, and swaying behavior with fluid, thereby addressing issues such as poor signal transmission efficiency, inadequate adsorption and capture capacity, and slow mass transfer speed during sensing. Finally, the design direction of micro-and nano-structures, and possible obstacles and solutions to promote chip-based detection have been discussed. It is hope that this article will inspire the exploration of interface micro-and nano-structures modulated sensing methods.

关键词： Chip-based detection Micro-and nano-structures Real-time online detection Sensing Health monitoring