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近年来，快递行业需求快速增长，物流配送行业压力剧增。无人机（UAV, unmanned aerial vehicle）配送凭借其人力成本低、灵活方便等特性成为车辆配送的有益补充。然而，无人机配送受续航能力和负载能力等因素的制约，需要低成本且能量自维持的配送和充电调度方案来支持多无人机的协同配送。提出了两阶段的能量自维持的多无人机协同配送及充电调度方案。第一阶段在满足无人机能量和载重容量约束的前提下，最小化能完成区域内所有配送任务所需的无人机数量，并给出对应配送路线。提出了无人机配送调度算法（UDSA, UAV delivery scheduling algorithm），并从理论上证明了UDSA的近似度。第二阶段对具有不同到达时间的无人机进行充电调度，最小化所有无人机的最大充电完成时间。提出了一种具有近似度的无人机充电调度算法（UCSA, UAV charging scheduling algorithm）来求解该问题。仿真实验结果表明，与基准算法相比，UDSA最多可以减少44.17%的无人机数量；UCSA最多可以缩短18.87%的最大充电完成时间。

Objective To explore the effect of teach-back method on exercise compliance and quality of life in elderly patients with hemiplegia after stroke. Method Using the convenient sampling method, a total of 80 elderly patients with hemiplegia after stroke were randomly divided into control group (n = 40) and intervention group (n = 40). The control group adopted the routine health education method, and the intervention group adopted the teach-back method on the basis of routine care. After a 3-month follow-up, the rehabilitation exercise compliance scale, National Institutes of Health Stroke Scale (NIHSS) score, Fugl-Meyer Assessment (FMA), Modified Barthel Index scale (MBI) and Stroke Specific Quality of Life Scale (SS-QOL) were used to compare the effects of exercise compliance, neurological function, limb motor function, self-care ability and quality of life between the two groups. Results The compliance rate was 85. 00%(34/40)in the intervention group, which was significant higher than 72. 50%(29/40)in the control group(P＜0. 01). The NIHSS score decreased in both two groups after intervention, and NIHSS score in the intervention group were significantly lower than that in the control group (P＜0. 01). Scores of FMA and MBI increased in both two groups after intervention, and scores of FMA and MBI in the intervention group were significantly higher than those in the control group (P＜0. 01). The total score of SS-QOL in the intervention group was significantly higher than that in the control group after intervention(P＜0. 05). Conclusion The application of teach-back method in health education is potentially effective to improve the patients’ compliance with limb exercise, promote healthy behavior and improve the quality of life of elderly patients with hemiplegia after stroke. (目的 探讨回授式教育对老年脑卒中后偏瘫患者锻炼依从性和生活质量的影响。方法 采用方便抽样法, 选取2020年9月—2021年2月医院收治的80例老年脑卒中后偏瘫患者为研究对象, 按照入院先后顺序给予编号, 随机分为对照组和干预组, 每组40例。对照组采用常规健康教育方法, 干预组在常规基础上, 结合回授法进行教育。通过3个月的随访, 采用康复锻炼依从性量表、美国国立卫生院卒中量表(NIHSS)、Fugl-Meyer运动功能量表(FMA)、Barthel指数量表(MBI)、脑卒中生活质量量表(SS-QOL), 比较两组患者锻炼的依从性、神经功能、肢体运动功能、自理能力及生活质量的影响。结果 干预组锻炼依从率85. 00%(34/40), 高于对照组的72. 50%(29/40), 差异有统计学意义(P＜0. 01)。干预后, 两组患者NIHSS评分均较干预前降低, 且干预组NHISS评分低于对照组(P＜0. 01)。两组FMA评分和MBI得分较干预前提高, 且干预组高于对照组, 差异有统计学意义(P＜0. 01); 干预组生活质量(SS-QOL)总分高于对照组, 差异有统计学意义(P＜0. 05)。结论 将回授式教育运用到患者健康教育中, 对提高老年脑卒中后偏瘫患者肢体锻炼的依从性、促进健康行为和提高生活质量水平具有重要的临床意义和推广价值。)

目的 探索青年烟雾病患者的卒中类型及临床特征，分析青年烟雾病患者发生卒中的危险因素。 方法 回顾性纳入2020年1月-2021年12月解放军总医院第五医学中心收治的青年（18～45岁）卒中型烟雾病患者，将患者分为出血性卒中组和缺血性卒中组进行亚型分析，对比不同卒中类型患者的临床及影像学特征。并以同期未发生卒中的烟雾病患者作为对照组，应用多因素logistic回归分析青年烟雾病患者发生出血性或缺血性卒中的危险因素。 结果 共入组108例卒中型烟雾病患者，其中出血性卒中22例（20.4%），缺血性卒中86例（79.6%）。出血性卒中组中脑室出血12例（54.5%），脑实质出血7例（31.8%），蛛网膜下腔出血3例（13.6%）。缺血性卒中组中大动脉梗死型21例（24.4%），血流动力学梗死36例（41.9%），穿支动脉梗死29例（33.7%）。出血性卒中组与缺血性卒中组性别和合并动脉瘤者比例的差异有统计学意义。无卒中对照组共104例，多因素logistic回归分析结果显示，合并动脉瘤（OR 10.569，95%CI 1.524～73.274，P=0.017）为青年烟雾病患者发生出血性卒中的独立危险因素；增龄（OR 1.058，95%CI 1.004～1.115，P=0.034）、合并糖尿病（OR 4.005，95%CI 1.766～9.080，P=0.001）、高铃木分期（OR 1.363，95%CI 1.037～1.793，P=0.027）为青年烟雾病患者发生缺血性卒中的独立危险因素。 结论 青年烟雾病患者的卒中类型以缺血性卒中为主。血流动力学梗死和脑室出血分别是缺血性卒中和出血性卒中的主要类型。增龄、高铃木分期、合并糖尿病和颅内动脉瘤是引起青年烟雾病患者卒中的独立危险因素。 Abstract: Objective To explore the stroke types and clinical characteristics of in young patients with moyamoya disease, and to analyze the risk factors of stroke in young patients with moyamoya disease (MMD). Methods The clinical and imaging data of MMD with stroke patient (age 18 to 45 years old) between January 2020 and December 2021 who were admitted to the Fifth Medical Center of PLA General Hospital were retrospectively analyzed. The MMD patients with stroke were divided into hemorrhagic stroke and ischemic stroke groups, imaging and clinical features of patients with different stroke types were compared. The MMD patients without stroke during the same period were selected as the control group, and multivariate logistic regression analysis was used to analyze the risk factors of hemorrhagic stroke and ischemic stroke in young MMD patients. Results A total of 108 patients with stroke were enrolled, including 22 cases (20.4%) of hemorrhagic stroke and 86 cases (79.6%) of ischemic stroke. A total of 104 subjects in control group were included. In hemorrhagic stroke group, there were 12 cases (54.5%) intraventricular hemorrhage, 7 cases (31.8%)of parenchymal hemorrhage, 3 cases (13.6%) of subarachnoid hemorrhage. In ischemic stroke group, there were 21 cases (24.4%) of larger artery infarction type, 36 cases (41.9%) of hemodynamic infarction type, and 29 cases (33.7%) of perforating artery infarction type. There were statistical differences in gender and the percentage of aneurysms between hemorrhage stroke group and ischemic stroke group. Multivariate logistic regression analysis showed that aneurysm was a risk factor for hemorrhagic stroke in young MMD patients (OR 10.569, 95%CI 1.524-73.274, P=0.017); age increasing (OR 1.058, 95%CI 1.004-1.115, P=0.034), Suzuki stage (OR 1.363, 95%CI 1.037-1.793, P=0.027) and diabetes mellitus (OR 4.005, 95%CI 1.766-9.080, P=0.001) were independent risk factors for ischemic stroke in young MMD patients. Conclusions The main type of stroke in young MMD patients is ischemic stroke. For MMD patients with stoke, hemodynamic infarction type was the main type of ischemic stroke, and ventricular hemorrhage was the main type of hemorrhagic stroke. Age, Suzuki stage, diabetes mellitus and intracranial aneurysm were independent risk factors for stroke in young MMD patients.

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Objective To explore the effect of combined health care management by doctor-nurse cooperation in community-dwelling elderly patients with chronic diseases. Methods A total of 80 community-dwelling elderly patients with chronic diseases were selected as the research objects, and were given health management based on a doctor-nurse cooperation model. After 1 year of intervention, patient anxiety status, quality of life and medical compliance behavior were evaluated. The blood glucose level, blood pressure and body mass index were measured. Results The Self-rating Anxiety Scale sore dropped form (40. 31±8. 34) before intervention to (37. 93±6. 29) after intervention, with a significant difference (P＜0. 05). The scores of medical compliance behaviors including dietary, exercise and lifestyle increased significantly after intervention (P＜0. 05). Patients achieved higher dimensional scores and total score of SF-36 after intervention (P＜0. 05). The blood glucose level, blood pressure and body mass index were improved after intervention. Conclusion The health management based on doctor-nurse cooperation model is potentially effective to relieve the anxiety status of community-dwelling elderly patients with chronic diseases, improve their treatment compliance and quality of life. (目的 探讨医护联合健康管理在社区老年慢性病患者中的应用效果。方法 选取2019年4月—2020年4月收治的80例老年慢性病患者为研究对象, 均予以医护联合健康管理。比较患者干预前后焦虑程度、遵医行为变化以及生活质量, 记录干预前后患者的血糖、血压以及体质量指数变化。结果 干预后, 本组患者焦虑自评量表(SAS)评分为(37. 93±6. 29)分, 低于干预前的(40. 31±8. 34)分, 差异有统计学意义(P＜0. 05)。干预后, 患者饮食、运动、生活方式3个维度的遵医行为评分及总分均高于干预前, 差异有统计学意义(P＜0. 05)。干预后患者SF-36量表各维度评分以及总分均高于干预前, 差异有统计学意义(P＜0. 05)。干预后患者的血糖水平、血压以及体质量指数较干预前均有改善。结论 医护联合对社区老年慢性病患者进行健康管理, 能够缓解老年慢性病患者的焦虑状况, 提高患者治疗依从性, 改善患者生活质量。)

This paper summarized the nursing experience of a patient with multiple valvular heart disease treated by extracorporeal membrane oxygenation (ECMO) combined with continuous renal replacement therapy (CRRT)after emergency redo thoracotomy. Key points of nursing included observation on vital signs, cardiac function maintenance, ECMO-related care, airway management and CRRT-related care. (本文总结1例重症联合瓣膜病患者术后紧急二次开胸后行体外膜肺氧合(ECMO)联合连续肾脏替代疗法(CRRT)救治的护理体会, 包括生命体征的监测、心功能维护、ECMO护理、气道护理、CRRT护理等, 通过严密的护理措施, 以确保患者得到有效救治。)

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Three carriers（ Bumpy clay, Carrageenan and Diatomaceous earth） were selected for the preparation of immobilized microbial particles, and the different particle properties, pollutant removal performance and influencing factors were investigated in the present paper. The particle performance studies showed that the mechanical strength of the immobilized particles was high for Bumpy clay and Diatomaceous earth and low for Carrageenan; with nutrient supplementation, Bumpy clay and Carrageenan could stably release 1. 50×106 CFU/mL and 2. 60×105 CFU/mL of microorganisms, while the release of Diatomaceous earth was poor. According to fitting results of the Monod equation, it could be obtained that the Diatomaceous earth immobilized microbial particles had the largest specific degradation rate （μmax） for CODMn. Carrageenan was comparable to it, and the lowest μmax was observed for Bumpy clay. While the Ks of Diatomaceous earth particles was significantly lower than that of the other two particles. Also, the kinetics of ammonia degradation showed a similar pattern to that of CODMn. The effect of environmental conditions on the degradation performance of the immobilized microbial particles showed that the highest first-order rate constants （k1） for CODMn were found under neutral （pH=7） condition for the three materials. The k1 for ammonia degradation were higher for Bumpy clay and US diatomaceous earth under neutral and alkaline conditions, however the highest rate of ammonia degradation was found for Carrageenan under neutral conditions. The k1 of CODMn and ammonia by immobilized microbial particles increased with the increase of temperature, among which the Bumpy clay was more sensitive to the change of temperature. Except for the Diatomaceous earth particles, the k1 for CODMn degradation by the other two immobilized microorganisms increased significantly（ P < 0. 05） with the increase of the initial concentration of the pollutant. There was no significant difference in the k1 of CODMn at different aeration intensities （P > 0. 05）, and higher aeration intensity was beneficial to the degradation of ammonia. [ABSTRACT FROM AUTHOR]

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Small vessel disease (SVD) is a clinical and imaging syndrome characterized by damage to small blood vessels in the brain, which can lead to stroke, vascular cognitive impairment, neuropsychological diseases, and other functional impairments. Since the publication of the standards for reporting vascular changes on neuroimaging (STRIVE) in 2013, the neuroimaging features of SVD have been preliminarily classified and standardized. However, there are still inconsistencies and lack of standardization in the understanding and application of SVD imaging features in clinical practice and scientific research. With the deepening exploration of the pathophysiological mechanisms of SVD and the continuous advancement of imaging technology, new imaging features and quantitative biomarkers of SVD have been discovered, providing more comprehensive and accurate information for the diagnosis and assessment of SVD. Based on this, the STRIVE-2 has been developed to comprehensively reveal the effects of SVD on brain function and structure. In order to standardize the neuroimaging evaluation and diagnosis of SVD in China, this consensus will provide a detailed interpretation of the neuroimaging features of SVD based on the STRIVE-2, combined with the specific national conditions of China, aiming to promote the standardization of the terms of SVD imaging diagnosis, improve the accuracy of clinical diagnosis, and further promote the research and progress in related fields. [ABSTRACT FROM AUTHOR]

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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.)

Tn order to improve the photocatalytic performance of TiO2 and investigate the effect of metal ion doping on photocatalytic performance of TiO2, the electrospinning technology and calcination process were used to prepare La3+/TiO2 nanofiber membrane. The morphology and structure of the material were characterized by SEM, XRD, FT-TR, and TG tests. With methylene blue as the target degradation agent, the mechanism of photocatalytic oxid at ion and degradation of dyes by La3+ modified TiO2 was further studied. The results showed that when the dye concentration was 1 0 mg/L and the concentration of La>+ doped modified TiO2 nanofibers was 1 5 mg/1 0 ml>, the degradation rate was 63.41 % after 10 minutes of catalysis, and 99.87% after 70 min of catalysis, which was 6.36% higher than the degradation rate of undoped TiO2 nanofibers. Tt can be seen that La3+ doping improves the photocatalytic degradation rate of TiO2, reducing the required time. [ABSTRACT FROM AUTHOR]

Coating drying is an important industrial process, but its process is influenced by factors such as temperature, wet thickness, substrate and coating properties, and the mechanism of film cracking is complex, involving interdisciplinary integration. Therefore, it is necessary to study the coating drying film formation process, film cracking mechanism, and measures to suppress cracking. Relevant literature on coating drying, film formation, and cracking were summarized and analyzed since the 1950s. The drying and film forming process of coatings in vertical, horizontal, and mixed drying modes were elaborated. The cracking mechanism of coatings was explored, and the calculation methods for critical crack free internal stress and critical crack free film thickness were summarized. The factors that affect film cracking, including temperature in the drying environment, wet thickness of the coating, substrate properties, and solution properties were analyzed. The morphology and distribution of single crack were investigated. The types of cracks were found out, and the methods to restrain cracking were analyzed from four aspects. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality 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 East China University of Science & Technology is the property of Journal of East China University of Science & Technology 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 Progress in Earthquake Sciences is the property of China Earthquake Administration, Institute of Geophysics 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 Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation 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 Economic Science / Jingji Kexue is the property of Economic Science 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.)