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针对二维光编解码接入网链路监测系统中多路距离相近用户信号叠加难以设置阈值的问题,提出了一种基于信号相关性的链路状态识别算法。该算法以正常信号为基准,对实时检测的信号进行信号相关性分析,根据带补偿自定义相关系数及系统的编码规则判断具体分支链路状态。搭建了32用户、3路等距实验系统,等距离链路断路个数为1时,相关系数为0.626 1;断路个数为2时,相关系数分别为0.342 1、0.386 5,均在阈值区间内。仿真结果表明,针对信号相关性而提出的自定义相关系数可以有效解决二维光编解码接入网链路监测系统中相近距离用户信号叠加问题。

Copyright of Acta Scientiarum Naturalium Universitatis Pekinensis is the property of Editorial Office of Acta Scientiarum Naturalium Universitatis Pekinensis 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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Copyright of Research of Soil & Water Conservation is the property of Institute of Soil & Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources 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 Railway Science & Engineering is the property of Journal of Railway Science & 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.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery 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.)

Background Individuals may experience significant alterations in sleep hygiene during the major public health emergencies, consequently impacting their sleep quality. Objective To explore the relationship between sleep quality and sleep hygiene among adult residents during the major public health emergencies, so as to provide references for improving the sleep quality of residents during such a period. Methods A sample of 1 364 adult residents were enrolled as the research subjects from February 20 to 29, 2020. All participants were asked to complete self-administered questionnaire to obtain basic-demographic information and sleep hygiene. Pittsburgh Sleep Quality Index (PSQI) was applied to assess sleep quality. Residents were classified into poor sleepers with PSQI score ≥8 and good sleepers defined as PSQI score <8. Binary Logistic regression analysis was conducted to identify factors associated with sleep quality. Radar chart was used to visualize and compare the sleep hygiene between poor sleepers and good sleepers. Results According to PSQI score, 891 (65. 32%) residents were good sleepers, while 473 (34. 68%) residents were poor sleepers. Comparison revealed that age (χ² =3. 887), past medical history (χ² =27. 938), awareness rate of importance of sleeping before major public health emergencies (χ² =4. 337), impact of sleep quality on quality of life during the major public health emergencies (χ² =178. 138), frequency of staying up late during the major public health emergencies (χ² =139. 390), compensatory sleep behaviors (χ² =39. 257), impact of sleep problems on daytime functioning (χ² =285. 879), change of bedtime (χ² =63. 031), sleep latency (χ² =168. 672), wake-up time (χ² =59. 221), changes in sleep duration (χ² =172. 332), time spent in the bedroom (χ² =23. 071), and sum of money spent on improving sleep environment (χ² =58. 584) yielded statistical difference between poor sleepers and good sleepers (P<0. 05 or 0. 01). Logistic regression analysis denoted that past medical history (OR=1. 680, 95% CI: 1. 185~ 2. 382), negative impact of sleep quality on quality life (OR=4. 181, 95% CI: 2. 722~6. 422), staying up late 3 to 4 times per week (OR=3. 145, 95% CI: 1. 497~6. 605), staying up late almost every day (OR=4. 271, 95% CI: 1. 970~9. 260), negative impact of sleep problems on daytime functioning (OR=7. 169, 95% CI: 5. 188~9. 907), prolonged sleep latency (OR=2. 836, 95% CI: 2. 019~ 3. 982) and shortened sleep duration (OR=3. 518, 95% CI: 2. 144~5. 772) were risk factors of poor sleep quality. The sum of money spent on improving sleep environment following the major public health emergencies ≤500 RMB (OR=0. 334, 95% CI: 0. 134~ 0. 830) was related to the incidence rate of poor sleep quality. Radar chart showed that poor sleepers were characterized by extravagant concerns, excessive cleanliness and poor sleep hygiene practices during the major public health emergencies, and poor sleepers were more likely to stay up late due to stress and emotional issues. Conclusion Some residents are facing poor sleep quality during the major public health emergencies, and poor sleep hygiene practice also contributes to poor sleep quality. [ABSTRACT FROM AUTHOR]

Venous thromboembolism (VTE) includes deep venous thrombosis (DVT) and pulmonary embolism (PE). Patients in intensive care unit (ICU) are often at a high risk of VTE due to combining many risk factors. Prevention strategies of VTE in critically ill patients are crucial, including identification of risk factors, the risk assessment of thrombosis and bleeding, mechanical prophylaxis and drug prophylaxis, effect monitoring, and quality control. Since the risk of VTE in ICU patients is high, the risk of bleeding should not be ignored. It is a challenge for ICU physicians to comprehensively evaluate the risk of thrombosis and bleeding in critically ill patients and implement effective preventive and monitoring measures in time. This article reviews the relevant research progress on prevention strategies of VTE in critically ill patients in order to provide clinical evidence for the prophylaxis of VTE in critically ill patients. [ABSTRACT FROM AUTHOR]

Copyright of Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone Research 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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Copyright of Continue Education Research is the property of Harbin Normal University 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 Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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 Vibration, Measurement & Diagnosis is the property of Nanjing Hangkong Daxue 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 Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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.)

In order to reduce the dry frictional wear of the end face of the mechanical seal used in the start and stop stage and under severe vibration conditions, the dry frictional wear simulation and experimental study of the textured face of the mechanical seal used in the pump were carried out. Firstly, the transient finite element model of the end face of dynamic and static ring seal with surface texture was established by ANSYS software. Based on Archard wear theory, the wear law of static ring ( graphite ring) under different texture spacing angle, edge length and rotation angle was analyzed, and the wear volume distribution of graphite ring was obtained. Then, the wear test of seal ring with different texture parameters was carried out by friction and wear testing machine under dry friction condition, and the surface morphology and wear mass of seal ring were obtained. Finally, The effects of different texture parameters on the wear mass of graphite ring and the mechanism of texture wear reduction were discussed. The experimental results show that the texture grooves are capable of hosting abrasive particles and generating a graphite transfer film to minimize wear; to minimize wear on the face of sealing ring, it is necessary to have a suitable texture area that can accommodate abrasive particles without causing excessive surface roughness; on average, with every 5 ° increase in texture spacing angle and 0. 1 mm decrease in edge length, the wear mass of graphite ring respectively decreases by approximately 7. 83% and 7. 35% . The wear mass of the graphite ring increases by 4. 25% on average when the rotation angle increases by 15 °. These findings can offer enhanced theoretical support towards surface texture design for pump mechanical seals, thereby bolstering their wear resistance. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board 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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Copyright of Journal of Hubei Open Vocational College is the property of Journal of Hubei Open Vocational College 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.)

Copyright of Geography Teaching is the property of Geography Teaching Editorial Office, East China Normal University 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.)

Copyright of Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics Editorial Department 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 Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology 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 Lubrication Engineering (0254-0150) is the property of Editorial Office of LUBRICATION ENGINEERING 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 Plateau Meteorology is the property of Plateau Meteorology 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.)

Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications 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.)

Insomnia disorder is the most common sleep disorder, which interacts with other diseases, causing health damage to human body and imposing a significant socio-economic burden. Currently, there have been further advancements in subtypes of insomnia disorder, comorbidity research, mechanistic hypotheses, assessment strategies, and treatment methods. With the advent of the information age, digital platforms can integrate early warning, accurate assessment and diagnosis, treatment methods, and later follow-up for insomnia disorder to establish a comprehensive and standardized system for the treatment and management of insomnia disorder, helping to alleviate a rising morbidity rate and save healthcare costs. [ABSTRACT FROM AUTHOR]

The purpose of the study was to analyze the structural characteristics of flagellin FliC (FliCEcN) of Escherichia coli Nissle 1917 and its stimulating effect on Caco-2 cells. FliCEcN protein was expressed by Escherichia coli BL21 (DE3), purified by NTA column and verified by SDS-PAGE and Western-blot. The structure model of FliCEcN protein was predicted by SOPMA and Alphold2, and the structure of FliCEcN protein was analyzed by surface enhanced Raman spectroscopy and circular dichroism spectroscopy. The secretion level of immune related factors was detected after stimulating Caco-2 cells with FliCEcN protein. The results showed that the size of FliCEcN protein was 64 kDa, which could be specifically recognized by anti-His monoclonal antibody. The amino and carboxyl terminals of FliCEcN protein were mainly composed of α-helix, and the intermediate domain is mainly composed of β-fold. The maximum absorption peaks of amide Ⅰ region of FliCEcN protein were all located at 1 656 cm-1, and the main secondary structures were α-helix and β-fold. FliCEcN's α-helix accounts for 44.4%, β-fold accounts for 23.4%, β-rotation angle accounts for 13.5%, and irregular curl accounts for 19.0%. The FliCEcN protein could effectively stimulate the secretion of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and interleukin-10 (IL-10) in Caco-2 cells. With the increase of stimulation time, the secretion level of IL-6 decreased, while the secretion level of IL-10 and TNF-α increased. The results show that α-helix and β-folding are the main structures of FliCEcN, which can promote the correct folding of its conformation and maintain its three-dimensional structure stability. The FliCEcN protein stimulated Caco-2 cells to secrete IL-6, IL-10, and TNF-α levels is different. [ABSTRACT FROM AUTHOR]

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries 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 Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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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Copyright of Journal of Jilin University (Medicine Edition) is the property of Jilin University Press 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 Drilling Fluid & Completion Fluid is the property of Drilling Fluid & Completion Fluid 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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Copyright of Journal of Vibration, Measurement & Diagnosis is the property of Nanjing Hangkong Daxue 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 Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology 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 Fly Ash Comprehensive Utilization is the property of Hebei Fly Ash Comprehensive Utilization Magazine 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.)

Copyright of Mechanical & Electronic Control Engineering is the property of Omniscient Pte. 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.)

Objective To investigate the status quo of the awareness of hospital infection prevention and control among cleaning staff in medical institutions, and to provide reference for the construction of the training and management plan of cleaning staff on infection control. Methods From March 1 to 9, 2023, a self-designed questionnaire for logistic cleaning personnel was used to investigate 541 cleaning staff in 45 medical institutions in Chongqing by means of objective sampling method. The effective questionnaire recovery rate was 100%. Results Women accounted for 89. 83% (486/541) of the 541 cleaning staff; middle school accounted for 50. 65% (274/541); High job mobility and have worked for more than five years accounted for 21. 44% (116/541); 12. 20% (66/541) acquired knowledge through the media or school. Conclusion One of the methods to prevent hospital infection and promote the high-quality development of medical institutions is to improve the cognition of cleaning staff on infection control, establish a model worker, build a culture of infection control, strengthen humanistic care and stabilize the talent team, so as to promote the high-quality development of medical institutions. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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.)

Trimetazidine is a widely available coronary artery dilating drug. However, it is listed as prohibited by the World Anti-Doping Code. Herein, the polyimide tape is used as the substrate, and integrated graphene array electrodes are easily prepared by combining patterning design and laser engraving techniques. The effect of laser power on the structure and performance of graphene array electrodes is investigated. When the laser power is increased from 50% to 70%, the electrochemically active area, the electron exchange capacity, and the signal enhancement effect of the graphene arrays to trimetazidine gradually increase. However, these properties decrease as the power continues to increase to 80%. The electrochemical oxidation mechanism of trimetazidine is investigated, which involves the transfer of two electrons and two protons. Based on the laserinduced signal enhancement of graphene arrays, a sensitive and simple electrochemical method for the determination of trimetazidine is developed with the linear range of 0. 5~20 μmol/L and the detection limit of 0. 15 μmol/L. This method is successfully applied to the analysis of urine samples from healthy volunteers, and the recoveries of the spiked samples are in the range of 96. 0% to 106. 2%. [ABSTRACT FROM AUTHOR]

Copyright of Nonferrous Metals Engineering is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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.)