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随着风电、光伏的大规模并网，电力系统面临灵活调节能力不足的挑战。水电运行灵活，通过与风光协同规划、互补运行，能有效平抑新能源出力波动，保障并网消纳。水风光协同规划的关键之一在于对水电灵活调节能力进行准确建模，其中振动区约束不容忽略。为此，提出了考虑水电振动区的水风光协同规划模型。该模型首先利用组合数学技术将水电机组振动区合成为电站振动区；然后，综合考虑振动区约束及梯级水力联系、水力发电方程等各项约束，实现对水电系统的准确建模；最后，耦合水电系统与新能源、联络线等相关运行约束形成水风光协同规划模型，并采用混合整数线性规划进行求解。以乌江流域某水风光互补系统为例，验证所提模型的有效性。

为了更好地理解油料产品价格的波动规律，提升国内油料产品价格研究水平，以大豆、油菜、花生为油料作物的典型代表，以2011年2月—2019年12月油料产业链上各个环节月度价格数据为基础，采用三元VAR-BEKK-GARCH(1，1)模型，研究油料产业链上、中、下游产品的价格溢出效应。结果表明：大豆产业链各环节产品均存在价格均值溢出效应，油菜产业链上、中游之间没有价格均值溢出效应，花生产业链上、下游之间不存在价格均值溢出效应；在大豆、油菜和花生产业链中，各环节产品间价格双向波动溢出效应明显。政府应通过建立农业产业链价格监测体系、多元化的价格监测体系、稳定的市场调节机制等措施，促进相关农业产业链的协调发展。In order to better understand the fluctuation patterns of oilseed product prices and enhance the level of domestic research on oilseed product prices. Taking soybean, rapeseed and peanut as typical representatives of oilseed crops and using the monthly price data of each link in the oilseed industry chain from February 2011 to December 2019 as the basis, a trivariate VAR-BEKK-GARCH(1,1) model was adopted to study the price spillover effect of the upstream, midstream and downstream sectors of the oilseed industry chain. The results showed that there was a price mean spillover effect among all links in the soybean industry chain, and there was no price mean spillover effect between the upstream and midstream sectors of the rapeseed industry chain, and there was no price mean spillover effect between the upstream and downstream sectors of the peanut industry chain. The bidirectional price volatility spillover effects among the various links in the soybean, rapeseed and peanut industry chains was more significant. The government should promote the coordinated development of the relevant agricultural industry chain by establishing a price monitoring system for the agricultural industry chain, a diversified price monitoring system, and a stable market adjustment mechanism.

被动地维护OTN（光传送网）各网元及其触发的告警已无法满足当前复杂的网络管理需求。文章在OTN网络管理系统上梳理出影响业务的各种重要告警标题,结合业务影响关联分析,提出了一种先于故障处理的OTN告警分级预警算法,为OTN告警分级预警和快速响应调度提供了有效可行的数理统计模型和依据。

与普通保偏光纤相比,保偏光子晶体光纤（PM-PCF）具有高双折射、低温度偏振系数等优点。文章介绍了将PM-PCF作为偏振模色散（PMD）的补偿元件用于PMD的动态补偿实验,并通过对结果的分析,验证了该补偿系统的性能。

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The problem of mycotoxin contamination in edible and forage agricultural products has become increasingly serious due to global warming and drought. Vomitoxin, also known as deoxynivalenol (DON), is one of the most common mycotoxins, mainly produced by Fusarium spp. and others, which not only causes great economic losses, but also seriously harms the health of humans and livestock. Mycotoxin de‐ toxification methods mainly include physical, chemical and biological methods, while biological detoxification methods based on microorganisms or enzymes have received more and more attention and application due to the advantages of strong specificity, high efficiency and no secondary pollution. This paper mainly reviews the toxicity of DON and its pathogenic mechanism to animals, as well as the research progress on the application of biological detoxification technology in feeds, aiming to provide reference for the biodetoxification of DON in feeds. [ABSTRACT FROM AUTHOR]

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The research progress on simulation and optimization of pressure swing adsorption purification technology for low concentration coal is reviewed. The adsorbent and pressure swing adsorption process are briefly and clearly introduced. From the perspective of the development trend of adsorbents, simulation and optimization can improve the performance of adsorbents and the ratio of raw materials, and improve the effectiveness of adsorbents. From the perspective of the development trend of pressure swing adsorption, simulation and optimization of pressure swing adsorption equipment can make its automation effect better and economic benefit higher. This paper summarizes and points out that simulation and optimization play an important role in this technology from both perspectives, which improves the efficiency and productivity. While bringing a lot of convenience to the technology, there are also areas for further improvement from both perspectives. From the perspective of adsorbent, the simulation and optimization of multicomponent mixtures still need to be improved; from the perspective of pressure swing adsorption, there are still limitations in the dynamic change simulation in the actual operation, and the safety optimization in the operation of the device should be considered more. [ABSTRACT FROM AUTHOR]

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Copper (Cu) is a crucial trace metal element in human body, which plays an important role in many life processes. Meanwhile, copper is strictly regulated in the human body and its homeostasis is closely related to the physiological state. The occurrences of many diseases are often accompanied by the copper imbalance. By monitoring the subtle variation in copper homeostasis, it can more accurately identify the factors that lead to abnormal changes in human physiology, especially the impact of environmental factors on the occurrence and development of diseases. In the past two decades, with the development of analytical instruments and improvement of analytical methods, non-traditional stable isotopic analysis has been widely applied in geochemistry and archaeology. Owing to its strong traceability, non-traditional stable isotopic analysis can also provide a new perspective to reveal the mechanisms of element homeostasis imbalance. Especially, stable copper isotopic analysis has a wide application prospect in environmental health research. Because of the virtues of wide application range and high analytical accuracy, multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) has effectively promoted the process of copper isotopic analysis. In this paper, we reviewed the mechanisms of non-traditional stable isotope fractionation and analysis methods of Cu isotopes based on MC-ICP-MS, and the basic conception of mass dependent fractionation (MDF) and non-mass dependent fractionation (MIF) as well as the instrumental configuration of MC-ICP-MS. We also introduced the methods of copper isotopic analysis, and then summarized the main applications of copper isotopic analysis in environmental health research. We focused on two aspects, i.e., Cu isotopic analysis of population characteristics and research on disease indicators. In summarizing the relevant researches of Cu isotopic analysis of population characteristics, we reviewed the influence factors, such as age, gender, dietary habits, and other factors. Afterwards, the studies of copper isotopic analysis on some diseases, such as cancers, nervous diseases, disorders of copper transporters, and other diseases were summarized. Finally, we discussed the application prospects of copper isotopic analysis in environmental health research. Until now, the application of stable copper isotopic analysis in environmental health is still in the initial stage, and there still exist many difficulties and challenges. We primarily list four main difficulties and challenges in future studies, including high-throughput sample analysis, background population investigation, combination of other clinical indicators, and combination of multiple omics techniques. [ABSTRACT FROM AUTHOR]

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Copyright of Chemical Engineering (China) / Huaxue Gongcheng is the property of Hualu Engineering Science & Technology Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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The experiment aimed to explore the impact of replacing fish meal with black fly larvae powder at different ratios in the feed on the growth and immune function of Macrobrachium rosenbergii. Nine hundred healthy juvenile Macrobrachium rosenbergii with an average weight of (1.22±0.02) g were randomly divided into six groups, with three replicates per group and 50 shrimp per replicate. The control group (FM group) received a basal diet, while the T10 group, T20 group, T30 group, T40 group, and T50 group had 10%, 20%, 30%, 40%, and 50% of fish meal replaced by black fly larvae powder, respectively. The experimental period lasted for 56 days. The results showed that the feed conversion ratio of the FM group and T10 group was significantly lower than that of the other groups (P<0.05), and the protein efficiency of the FM group was significantly higher than that of the other groups (P<0.05). The blood lymphatic malondialdehyde (MDA) content of the FM group, T10 group and T20 group was significantly lower than that of the T40 group and T50 group (P<0.05). The blood lymphatic lysozyme (LZM) activity of the T10 group was significantly higher than that of the T30 group, T40 group, and T50 group (P<0.05). The liver and pancreas alkaline phosphatase (AKP) and acid phosphatase (ACP) activities of the T30 group and T40 group were lower than those of the other experimental groups. The study suggests that feeding Macrobrachium rosenbergii with a diet where 10% to 20% of fish meal is replaced by black fly larvae powder is feasible. [ABSTRACT FROM AUTHOR]

Copyright of West China Journal of Stomatology is the property of Sichuan University, West China College of Stomatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Objective To explore the relationship among self 一 perceived burden, family resilience and quality of life in patients with ovarian cancer, and to analyze the potential role of family resilience between self - perceived burden and quality of life. Methods Ovarian cancer patients hospitalized in the oncology departments of two tertiary hospitals in Sichuan Province from May 2022 to January 2023 were selected as the research subjects, and the general information questionnaire, family resilience assessment scale (FRAS), self - perceived burden scale of cancer patients (SPBS 一 CP), and ovarian cancer quality of life scale (FACT - 0) were used to conduct questionnaire surveys. SPSS 22.0 was used for descriptive analysis, correlation analysis and multiple linear regression analysis. PROCESS 3. 4 was used to analyze the mediating effect of family resilience between self 一 perceived burden and quality of life, and the Bootstrap method was used to test the mediating effect. Results The family resilience score of ovarian cancer patients was (140. 61 ± 15. 82), self 一 perceived burden was (59. 46 ± 19. 95), and quality of life was (91. 52 ±32. 01). There was a positive correlation between family resilience and quality of life in patients with ovarian cancer (r = 0. 464, P < 0. 01), and the self 一 perceived burden was negatively correlated with family resilience and quality of life (r = - 0. 385, - 0. 439, P < 0. 01), Family resilience had a partial mediating effect between ovarian cancer patients' self 一 perceived burden and quality of life, and the mediating effect accounted for 30. 35 % of the total effect. Conclusion The self - perceived burden of ovarian cancer patients is at a moderate level, family resilience is at a lower middle level, and the quality of life needs to be improved. It is recommended that healthcare professionals improve the quality of life by enhancing family resilience and reducing the burden of self 一 perception through health education methods such as enhancing family support, establishing coping beliefs, and promoting family communication. [ABSTRACT FROM AUTHOR]

Copyright of Modern Preventive Medicine is the property of Modern Preventive Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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