期刊文献+
共找到593篇文章
< 1 2 30 >
每页显示 20 50 100
Endoscopic therapy of weight regain after bariatric surgery 被引量:1
1
作者 Milutin Bulajic Salvatore Francesco Vadalà di Prampero +1 位作者 Ivo Boškoski Guido Costamagna 《World Journal of Gastrointestinal Surgery》 SCIE 2021年第12期1584-1596,共13页
Weight regain following primary bariatric surgery occurs in a significant proportion of patients and is attributed to epidemiological,anatomical and metabolic factors.Surgical revision of these patients has significan... Weight regain following primary bariatric surgery occurs in a significant proportion of patients and is attributed to epidemiological,anatomical and metabolic factors.Surgical revision of these patients has significant risks and limited benefits.Endoscopic revisions that reduce gastric pouch size and diameter of the gastrojejunal anastomosis may offer an effective,safe,less invasive and even reproducible treatment.We herein discuss the indication,selection and feasibility of different endoscopic techniques that could be used in the management of weight regain following primary bariatric surgery.Future research could optimize a personalized approach not only in the endoscopic management but also in combination with other therapeutic modalities for weight regain after bariatric surgery. 展开更多
关键词 Morbid obesity Weight regain Endoscopic sleeve gastroplasty Transoral outlet reduction Bariatric surgery Full thickness suturing
下载PDF
Determinates of Regain in Body Mass Index among Malnourished Aids Patients on Therapeutic Food in Amhara National Regional State, Northwest Ethiopia: A Retrospective Cohort Study
2
作者 Molla Gedefaw Moges Tariku 《Open Journal of Epidemiology》 2015年第2期122-128,共7页
Although its utilization is greatly disputed, ready-to-use therapeutic food has been started as clinical nutrition care and treatment for malnourished adult AIDS patients since 2011 in Amhara National Regional State. ... Although its utilization is greatly disputed, ready-to-use therapeutic food has been started as clinical nutrition care and treatment for malnourished adult AIDS patients since 2011 in Amhara National Regional State. However, factors determining the intended outcome (weight gain) have not been properly investigated. The main objective of the study was to assess improvement in body mass index and to identify its determinant factors. A retrospective cohort study design was conducted. Cluster sampling was employed to select health facilities in which the service was provided in the region. Of the 44 health facilities, nine were selected using lottery method, and all patients receiving the care in these health institutions were included in the study. Using tailored structured checklist, data were collected, organized and cleaned. Using paired T-test existence of difference between the mean of body mass index at admission and at 3rd visit was measured. Finally analysis of association between some selected independent variables with the outcome variable was done using logistic regression model at 95% CI and p 2). Paired T-test revealed that there was a statistically significant difference between mean of body mass index at admission and at the 3rd visit. Good ready-to-use therapeutic food treatment adherence (AOR 11.145;95% CI 6.556, 18.946), moderate acute malnutrition at admission (AOR 6.71;95% CI 2.618, 17.195), good ART adherence (AOR 2.136;95% CI, 1.269, 3.595) and being male (AOR 1.73;95% CI 1.052, 2.850) have a statistically significant contribution for body mass index improvement. The study identifies factors that determine gain in body mass index among AIDS patients on ready-to-use therapeutic food. However, although the study revealed a statistically significant difference between body mass index during enrolment, and after three months, we disagreed with the right and left utilization of imported food because of lack of sustainability, and aid dependency. We rather recommend interventions that encourage households to produce food with similar outcomes from locally available food staff. 展开更多
关键词 THERAPEUTIC FOOD BODY Mass Index regain AIDS Ethiopia
下载PDF
Weight regain after bariatric surgery: Promoters and potential predictors
3
作者 Hala Mourad Demerdash 《World Journal of Meta-Analysis》 2021年第5期438-454,共17页
Obesity is globally viewed as chronic relapsing disease.Bariatric surgery offers the most efficient and durable weight loss approach.However,weight regain after surgery is a distressing issue as obesity can revert.Sur... Obesity is globally viewed as chronic relapsing disease.Bariatric surgery offers the most efficient and durable weight loss approach.However,weight regain after surgery is a distressing issue as obesity can revert.Surgical procedures were originally designed to reduce food intake and catalyze weight loss,provided that its role is marginalized in long-term weight maintenance.Consequently,it is essential to establish a scientifically standardized applicable definitions for weight regain,which necessitates enhanced comprehension of the clinical situation,as well as have realistic expectations concerning weight loss.Moreover,several factors are proposed to influence weight regain as psychological,behavioral factors,hormonal,metabolic,anatomical lapses,as well as genetic predisposition.Recently,there is a growing evidence of utilization of scoring system to anticipate excess body weight loss,along with characterizing certain biomarkers that identify subjects at risk of suboptimal weight loss after surgery.Furthermore,personalized counseling is warranted to help select bariatric procedure,reinforce self-monitoring skills,motivate patient,encourage mindful eating practices,to avoid recidivism. 展开更多
关键词 Weight regain Bariatric surgery HORMONES DIET EXERCISE Genetic factors
下载PDF
The Hundred-Old Party Regains Its Former Gallantry
4
作者 Dao Shulin Su Jingxiang Hu Shisheng Fu Xiaoqiang Ma Jiali Zhang Siqi 《Contemporary International Relations》 2004年第7期11-18,共8页
关键词 The Hundred-Old Party regains Its Former Gallantry
下载PDF
China Action to Help Cataract Suffers Regain Eyesight
5
作者 SHIYONGHONG 《China's Tibet》 1998年第6期16-17,共2页
关键词 China Action to Help Cataract Suffers regain Eyesight
下载PDF
贮后乙烯利处理对1-甲基环丙烯保鲜花牛苹果催熟品质的影响
6
作者 吴小华 颉敏华 +5 位作者 陈柏 王彦淳 马盼盼 魏丽娟 贾莉莉 杨小峰 《食品安全质量检测学报》 CAS 2024年第10期296-303,共8页
目的研究乙烯利催熟对低温贮藏10个月、经不同浓度1-甲基环丙烯(1-methylcyclopropene,1-MCP)处理的花牛苹果果实品质和香气成分的影响。方法以天水花牛苹果为试材,采用不同浓度1-MCP熏蒸处理(0、1、2μL/L)后,置(0±1)℃低温下贮... 目的研究乙烯利催熟对低温贮藏10个月、经不同浓度1-甲基环丙烯(1-methylcyclopropene,1-MCP)处理的花牛苹果果实品质和香气成分的影响。方法以天水花牛苹果为试材,采用不同浓度1-MCP熏蒸处理(0、1、2μL/L)后,置(0±1)℃低温下贮藏10个月,研究乙烯利催熟处理对其感官品质(果实硬度、可溶性固形物、可滴定酸、呼吸速率和乙烯释放量)、挥发性香气物质成分等指标的影响。结果不同浓度乙烯利处理均使花牛苹果果实贮后呼吸强度、乙烯释放量增加,果实硬度、可滴定酸含量降低;乙烯利催熟后,果实香气有效恢复,贮后经1、3、5 mL/L乙烯利处理的果实常温货架10 d时,分别检测出70、87和81种香气成分,较同期不经乙烯利催熟果实分别增加16.7%、45.0%和35.0%,且3 mL/L乙烯利处理对0、1μL/L 1-MCP处理果实催熟效果最佳,5 ml/L乙烯利处理对2μL/L 1-MCP处理果实催熟效果最佳。结论贮后乙烯利催熟处理可加快经保鲜处理花牛苹果的后熟进程,促进果实香气成分的产生,提高其感官品质和食用价值。 展开更多
关键词 花牛苹果 乙烯利 催熟复香 香气成分 贮藏品质
下载PDF
莱赛尔赛络集聚纺纱过程温湿度控制
7
作者 王聪民 王海霞 +2 位作者 刘艳杰 周义德 吴涛 《棉纺织技术》 CAS 2024年第3期86-88,共3页
探讨莱赛尔纤维赛络集聚纺纱过程中的温湿度控制问题。分析了莱赛尔纤维性能,得出莱赛尔纤维在纺纱各工序中的主要加工性能特点和环境温湿度要求。以纺制中高档赛络集聚纺纱线为例,介绍了纺纱主要工序空调控制方法和温湿度参数及各工序... 探讨莱赛尔纤维赛络集聚纺纱过程中的温湿度控制问题。分析了莱赛尔纤维性能,得出莱赛尔纤维在纺纱各工序中的主要加工性能特点和环境温湿度要求。以纺制中高档赛络集聚纺纱线为例,介绍了纺纱主要工序空调控制方法和温湿度参数及各工序半成品回潮率控制范围。认为:莱赛尔纤维纺纱过程应增加预处理工序,需要采用偏大的相对湿度环境,并保证各工序纤维吸湿和放湿过程稳定,以减少静电,保证纤维开松、梳理顺利,减少纺纱断头。 展开更多
关键词 莱赛尔纤维 赛络集聚纺 纺纱 温湿度 回潮率
下载PDF
耳穴压豆联合艾灸在减重术后患者中的应用效果
8
作者 朱小华 徐雯 +2 位作者 殷俊翔 林伟青 陈晓亮 《实用临床医学(江西)》 CAS 2024年第2期93-97,共5页
目的探究耳穴压豆联合艾灸在腹腔镜袖状胃切除术(LSG)后患者中的应用效果。方法选取2018年3月至2022年11月期间在普外一科接受LSG的105例患者作为研究对象,采用随机抽签法将其分为对照组(n=53)与试验组(n=52)。对照组术后采用常规护理... 目的探究耳穴压豆联合艾灸在腹腔镜袖状胃切除术(LSG)后患者中的应用效果。方法选取2018年3月至2022年11月期间在普外一科接受LSG的105例患者作为研究对象,采用随机抽签法将其分为对照组(n=53)与试验组(n=52)。对照组术后采用常规护理加认知行为模式进行干预,试验组在对照组护理的基础上,于术后6个月时增加使用艾灸联合耳穴压豆方法干预。比较2组患者手术后6、8、10、12个月所测体重、体重指数(BMI)、腰臀比(WHR)、体脂率(BF)、内脏脂肪面积(VFA)、多余体重减少百分比(EWL)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C)水平。结果术后6个月,2组体重、BMI、WHR、BF、VFA、EWL、TC、TG、LDL-C、HDL-C比较差异无统计学意义(P>0.05)。术后8、10和12个月时,试验组体重、BMI、WHR、BF、VFA、TC、TG、LDL-C、HDL-C明显低于对照组(P<0.05或P<0.001),且EWL明显高于对照组(P<0.05)。结论耳穴压豆联合艾灸应用于LSG术后的患者可以有效提高其代谢水平,调节其内分泌功能,有助于巩固减重手术的中长期效果,预防术后复胖的发生。 展开更多
关键词 耳穴压豆 艾灸 减重术后 术后复胖
下载PDF
载铜抗菌黏胶纤维的制备及其性能 被引量:1
9
作者 刘杰 高晓红 +2 位作者 张雪婷 杨旭礼 乔瑞泽 《染整技术》 CAS 2024年第5期29-33,共5页
采用原位自还原法制备了载铜抗菌黏胶纤维。设计正交试验优化了制备工艺。测试了不同载铜量黏胶纤维的抗菌及耐水洗性能;分析了载铜量对纤维色光、吸湿回潮率、力学性能的影响;探究了黏胶纤维载铜处理前后的热稳定性变化。结果表明,载... 采用原位自还原法制备了载铜抗菌黏胶纤维。设计正交试验优化了制备工艺。测试了不同载铜量黏胶纤维的抗菌及耐水洗性能;分析了载铜量对纤维色光、吸湿回潮率、力学性能的影响;探究了黏胶纤维载铜处理前后的热稳定性变化。结果表明,载铜黏胶纤维制备的最优工艺为:硫酸铜溶液浓度4 mmol/L,反应温度85℃,反应时间120 min;随着载铜量的增加,黏胶纤维的抗菌性能逐渐增强,达到0.58 mg/g时,对大肠杆菌和金黄色葡萄球菌的抑菌率分别为95.70%和96.42%,经过50次标准水洗后,抑菌率分别为93.52%和93.93%;载铜处理后,黏胶纤维颜色无明显变化,色深较浅,色光稳定性好;相较未处理的黏胶纤维,处理后纤维吸湿回潮率下降,断裂强力增加,断裂伸长量与断裂时间下降,但幅度均较小;黏胶纤维热稳定性无明显变化。 展开更多
关键词 抗菌耐水洗 色光 吸湿回潮率 力学性能 热稳定性
下载PDF
减重后为何会出现体重反弹?
10
作者 张群 谭莺 +1 位作者 朱延华 陈燕铭 《新医学》 CAS 2024年第9期677-684,共8页
肥胖作为一种全球性的健康问题,其治疗及管理挑战重重,尤其是体重(体质量)反弹现象,它不仅削弱了减重效果,还可能对患者的身心健康造成进一步影响。文章深入探讨了肥胖治疗中的体质量反弹问题,分析了体质量反弹的定义、普遍性及其对健... 肥胖作为一种全球性的健康问题,其治疗及管理挑战重重,尤其是体重(体质量)反弹现象,它不仅削弱了减重效果,还可能对患者的身心健康造成进一步影响。文章深入探讨了肥胖治疗中的体质量反弹问题,分析了体质量反弹的定义、普遍性及其对健康的影响。从体质量调定点理论、代谢适应、免疫细胞表型变化、脂质代谢以及食欲调控等方面,阐释了体质量反弹的生物学机制。提出了综合管理策略,包括生活方式调整、持续药物治疗、手术干预和多学科协作,以期实现肥胖患者长期的体质量管理。研究强调了体质量管理的持续性和个体化,为临床实践提供了科学指导。 展开更多
关键词 肥胖 体质量反弹 体质量管理
下载PDF
气脉冲K点刺激口腔护理对颅脑损伤意识障碍患者的促醒效果
11
作者 詹梦梅 胡娇娇 +6 位作者 王建宁 罗晶 曹梦娟 熊安萍 邵秀芹 郑茶凤 徐萍 《护士进修杂志》 2024年第5期539-543,共5页
目的评价气脉冲K点刺激口腔护理为主要形式的超早期促醒对颅脑损伤(TBI)意识障碍患者的促醒效果。方法便利抽样选取2022年1-9月南昌大学第一附属医院神经外科TBI意识障碍患者100例,最终纳入研究95例,将2022年1-4月的48例患者设为对照组,... 目的评价气脉冲K点刺激口腔护理为主要形式的超早期促醒对颅脑损伤(TBI)意识障碍患者的促醒效果。方法便利抽样选取2022年1-9月南昌大学第一附属医院神经外科TBI意识障碍患者100例,最终纳入研究95例,将2022年1-4月的48例患者设为对照组,2022年6-9月的47例患者设为观察组,5月为洗脱期。对照组在常规促醒治疗的基础上采取传统口腔护理方法,观察组在对照组基础上采用气脉冲K点刺激口腔护理,频率为1次/6 h。比较2组患者干预前、干预后2周、4周意识状态和口腔情况,采用修订版昏迷恢复量表(CRS-R)、格拉斯哥评分(GCS)及RLAS-R认知功能分级量表评估患者意识状态及认知功能的改变,采用改良Beck口腔评估法评估患者口腔情况,同时以横断面方式记录2组口腔护理操作时间。结果干预前,2组患者CRS-R、GCS以及RLAS-R评分,Beck评分比较,差异均无统计学意义(P>0.05)。经干预后2周、4周,患者CRS-R、GCS以及RLAS-R评分逐渐提升,观察组得分高于对照组,差异均具有统计学意义(P<0.05);Beck评分逐渐下降,观察组Beck评分低于对照组,口腔情况优于对照组(P<0.05)。治疗期间2组患者均未发生不良安全事件及不良反应。观察组口腔护理时间短于对照组。结论气脉冲K点刺激方法辅助口腔护理,以临床常见操作为捆绑,实现多频次和规律的感觉刺激,能够改善患者的意识水平,提高口腔护理质量。 展开更多
关键词 气脉冲 K点刺激 口腔护理 昏迷促醒 颅脑损伤
下载PDF
Comparison of the ability of wavelet index and bispectral index for reflecting regain of consciousness in patients undergone surgery 被引量:13
12
作者 ZHANG Xiao-tong CHENG Hao XIONG Wei WANG Bao-guo 《Chinese Medical Journal》 SCIE CAS CSCD 2010年第12期1520-1523,共4页
Background Wavelet index (WLI) is a new parameter for monitoring depth of anesthesia based on Wavelet analysis. We observed the change of WLI and bispectral index (BIS) in patients regain of consciousness (ROC) ... Background Wavelet index (WLI) is a new parameter for monitoring depth of anesthesia based on Wavelet analysis. We observed the change of WLI and bispectral index (BIS) in patients regain of consciousness (ROC) in the absence of frontalis electromyographic (EMG) interference. The aim of this study was to compare the ability of WLI and BIS for reflecting ROC in patients undergone surgery. Methods Twelve patients who were scheduled for maxillofacial surgeries were enrolled in the study. BIS and WLI values were monitored continually. After being given midazolam and remifentanil, patients were asked to squeeze the investigator's hand ever 30 seconds. Patients were continuously given propofol until loss of consciousness (LOC1). Tunstalrs isolated forearm technique was used to test the surgical consciousness in patients. After total muscle relaxation endotracheal intubations were performed, and the patients were connected to a ventilator. Then, propofol was withdrawn until the patients showed regain of consciousness (ROC1) and an awareness reaction. After the command test, patients were readministered with propofol until loss of consciousness (LOC2). After surgery, all of the sedatives were withdrawn, and the patients were let to regain consciousness (ROC2), Results The BIS values of twelve patients at ROC1 after using muscle relaxant were much lower than those at LOC1 and ROC2 without using muscle relaxant, showing statistical significance (P 〈0.05). Meanwhile, the WLI values of twelve patients at ROC1 after using muscle relaxant were much higher than those at LOC1 and equal to ROC2 without using muscle relaxant, showing statistical significances (P 〈0.05) between ROC1 and LOCI. Conclusions This study showed that under muscle relaxation or facial paralysis, when there is no EMG signal, BIS can not accurately reflect regain of consciousness in surgical patients, but WLI can reflect it accurately. So WLI may have advantages for reflecting state of consciousness in surgical patients. 展开更多
关键词 frontalis electromyographic activity wavelet index bispectral index tunstall's isolated forearmexperiments regain of consciousness
原文传递
在棉纺设备上加工麻纤维的回潮率控制研究
13
作者 钱丽莉 陈红霞 +1 位作者 杜志敏 郁崇文 《棉纺织技术》 CAS 2024年第7期18-21,共4页
为了探讨回潮率对麻纤维在棉纺设备上干纺的可纺性影响,分别测试了不同回潮率下棉纤维、苎麻纤维和亚麻纤维的强伸性和柔软性,并对比了3种纤维回潮率随时间的变化趋势。结果表明:相较于棉纤维,回潮率对麻纤维性能有更显著的影响,随着回... 为了探讨回潮率对麻纤维在棉纺设备上干纺的可纺性影响,分别测试了不同回潮率下棉纤维、苎麻纤维和亚麻纤维的强伸性和柔软性,并对比了3种纤维回潮率随时间的变化趋势。结果表明:相较于棉纤维,回潮率对麻纤维性能有更显著的影响,随着回潮率的增大,苎麻纤维和亚麻纤维的断裂强力和断裂伸长率总体均呈现增长趋势;回潮率对纤维柔软性的改善有显著影响,尤其当回潮率达到15%以上时,苎麻纤维和亚麻纤维的柔软性得到大幅提高;纤维放湿回潮率-时间曲线显示,保湿性从高到低依次为棉、亚麻、苎麻。认为:在麻纤维纺纱中,确保其回潮率在15%~20%,可有效提高苎麻纤维和亚麻纤维的强伸性和柔软性,从而增大纤维之间的抱合力,改善麻纤维的可纺性。 展开更多
关键词 亚麻 苎麻 回潮率 强伸性 柔软性 干法纺纱
下载PDF
驱梅汤联合多西环素对梅毒患者免疫炎症反应及外周血单核细胞TLR2、Foxp3 mRNA的影响
14
作者 孙可心 方圆 景军蕾 《中国性科学》 2024年第3期153-157,共5页
目的探讨驱梅汤联合多西环素对梅毒患者免疫炎症反应及外周血单核细胞(PBMCs)Toll样受体2(TLR2)、叉头框蛋白3(Foxp3)mRNA水平的影响。方法选取2016年12月至2020年12月邢台市第二医院收治的107例梅毒患者作为研究对象。采用随机信封法... 目的探讨驱梅汤联合多西环素对梅毒患者免疫炎症反应及外周血单核细胞(PBMCs)Toll样受体2(TLR2)、叉头框蛋白3(Foxp3)mRNA水平的影响。方法选取2016年12月至2020年12月邢台市第二医院收治的107例梅毒患者作为研究对象。采用随机信封法分为常规组(n=53)和实验组(n=54)。常规组采用多西环素治疗,实验组采用多西环素联合驱梅汤治疗。比较两组梅毒滴度快速血浆反应素试验(RPR)转阴率、临床疗效、T淋巴细胞亚群(CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+))、PBMCs TLR2、Foxp3 mRNA相对表达量及不良反应发生情况。结果实验组治疗后3、6个月RPR转阴率高于常规组(P<0.05);实验组总有效率高于常规组(P<0.05);治疗30 d后实验组CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)高于常规组(P<0.05);治疗30 d后实验组PBMCs TLR2、Foxp3 mRNA相对表达量低于常规组(P<0.05);实验组不良反应发生率低于常规组(P<0.05)。结论驱梅汤联合多西环素治疗梅毒患者能提高转阴率,疗效确切,且安全性较高,这可能与抑制PBMCs TLR2、Foxp3 mRNA表达有关。 展开更多
关键词 梅毒 多西环素 驱梅汤 T淋巴细胞亚群 快速血浆反应素试验转阴率 不良反应
下载PDF
CD4+T cells memorize obesity and promote weight regain 被引量:2
15
作者 Jianghuan Zou Beibei Lai +10 位作者 Mingzhu Zheng Qin Chen Shujun Jiang Anying Song Zan Huang Peiliang Shi Xin Tu Di Wang Linrong Lu Zhaoyu Lin Xiang Gao 《Cellular & Molecular Immunology》 SCIE CAS CSCD 2018年第6期630-639,共10页
Body weight regain often causes failure of obesity therapies while the underlying mechanism remains largely unknown.In this study,we report that immune cells,especially CD4+T cells,mediate the‘memory’of previous obe... Body weight regain often causes failure of obesity therapies while the underlying mechanism remains largely unknown.In this study,we report that immune cells,especially CD4+T cells,mediate the‘memory’of previous obese status.In a weight gain-loss-regain model,we found that C57BL/6J mice with an obesity history showed a much faster rate of body weight regain.This obesity memory could last for at least 2 months after previously obese mice were kept at the same body weight as non-obese mice.Surprisingly,such obesity memory was abrogated by dexamethasone treatment,whereas immunodeficient Rag1−/−and H2A−/−mice failed to establish such memory.Rag1−/−mice repossessed the obesity memory when immune cells or CD4+T cells isolated from previously obese mice were transferred.Furthermore,depletion of CD4+T cells led to obesity memory ablation.Taken together,we conclude that CD4+T cells mediate obesity memory and promote weight regain. 展开更多
关键词 CD4+T cell IMMUNODEFICIENCY METABOLISM obesity memory weight regain
原文传递
抗紫外消光聚酯纤维的制备与性能研究
16
作者 李嘉乐 马博谋 +1 位作者 王学利 朱福和 《化工新型材料》 CAS CSCD 北大核心 2024年第7期109-114,125,共7页
为了提高聚对苯二甲酸乙二醇酯(PET)纤维的紫外防护性能,采用熔融纺丝的方法,将质量比1∶1的二氧化铈-二氧化钛(CeO_(2)-TiO_(2))功能性复合粉体与PET切片共混制备抗紫外消光PET纤维。通过紫外-可见近红外光谱仪、差示扫描量热仪、声速... 为了提高聚对苯二甲酸乙二醇酯(PET)纤维的紫外防护性能,采用熔融纺丝的方法,将质量比1∶1的二氧化铈-二氧化钛(CeO_(2)-TiO_(2))功能性复合粉体与PET切片共混制备抗紫外消光PET纤维。通过紫外-可见近红外光谱仪、差示扫描量热仪、声速取向测量仪、纱线强伸仪、纺织物防晒指数分析仪等对抗紫外消光PET纤维的性能进行测试和分析。结果表明:随着功能性复合粉体质量分数的增加,纤维的结晶度先减小后增大;纤维的力学性能有所下降,但仍能保持在3cN/dtex以上,满足服用性能的要求;当加入质量分数超过1.5%的功能性复合粉体时,纤维的回潮率得到提高,从0.41%上升到了0.61%,此时抗紫外消光PET纤维织物的紫外线防护系数(UPF)可以达到372+,长波紫外线区透过率小于3.67%,中波紫外线区透过率达到最小值0.05%,在正常和润湿状态下都能达到优异的抗紫外效果,同时消光性能也得到明显改善。 展开更多
关键词 抗紫外消光聚酯纤维 紫外屏蔽性能 回潮率
下载PDF
中国传统乡村治理制度的历史变迁与价值重拾
17
作者 王久齐 肖杨飞英 《延安大学学报(社会科学版)》 2024年第4期68-75,共8页
中国传统乡村治理制度以乡里制度为基本载体,历经了从秦汉时期的“乡官制”、唐宋时期“乡里制”与“保甲制”并行、明清时期的“乡绅之治”到晚清民国时期“宪制自治”“乡村自治”“新县制”的演变历程,其丰富的思想内涵为现代乡村治... 中国传统乡村治理制度以乡里制度为基本载体,历经了从秦汉时期的“乡官制”、唐宋时期“乡里制”与“保甲制”并行、明清时期的“乡绅之治”到晚清民国时期“宪制自治”“乡村自治”“新县制”的演变历程,其丰富的思想内涵为现代乡村治理体系创新留下宝贵资源。然而,中国传统乡村治理思想的宝贵价值却因对“现代性”的片面追求、对“城镇化”的错误解读以及将“西方模式”视为“治理范本”等而长期处于被遮蔽状态。只有重拾中国传统乡村治理制度对于新时代全面推进乡村振兴战略的价值意蕴,推动传统乡村治理资源中的治理智慧同我国乡村实际相结合,才能为我国未来乡村治理奠定更加坚实的历史根基以及更加广阔的发展空间。 展开更多
关键词 中国传统 乡村治理 制度嬗变 价值重拾
下载PDF
松散回潮机热风循环加热系统加热器的自动清洗研究
18
作者 刘鸿 刘竣文 +4 位作者 王明杰 赵吕银 姚荣坤 王中山 范本华 《现代制造技术与装备》 2024年第11期20-24,共5页
在当前的生产过程中,松散回潮热风加热器存在易堵塞、加热效果不佳、过风间隙狭小、清洁不彻底、易积水等问题,严重影响了热风的温度和风速的稳定性,导致松散回潮出口温度和湿度偏差较大。为了解决这些问题,设计一套能够定期冲洗清洁加... 在当前的生产过程中,松散回潮热风加热器存在易堵塞、加热效果不佳、过风间隙狭小、清洁不彻底、易积水等问题,严重影响了热风的温度和风速的稳定性,导致松散回潮出口温度和湿度偏差较大。为了解决这些问题,设计一套能够定期冲洗清洁加热器的系统。通过引入高压水冲洗技术,结合合理的喷头布局、排污系统改造以及烘干处理,确保了加热器的高效清洁和系统的稳定运行,有效解决加热器堵塞导致的热风循环系统不稳定问题。 展开更多
关键词 松散回潮 出口温度 出口水分 自动清洗
下载PDF
适用于开关特性试验的端子灵活切换装置设计
19
作者 周洁涛 《电气开关》 2024年第3期82-84,共3页
开关特性试验接线复杂,往往需要多人配合调整接线端子,因其安全风险高、操作难度大、工作效率低,亟待优化和调整。研究设计一种适用于开关特性试验的端子灵活切换装置,针对开关分合闸试验中的测试内容及操作流程,设置合闸、第一组分闸... 开关特性试验接线复杂,往往需要多人配合调整接线端子,因其安全风险高、操作难度大、工作效率低,亟待优化和调整。研究设计一种适用于开关特性试验的端子灵活切换装置,针对开关分合闸试验中的测试内容及操作流程,设置合闸、第一组分闸、第二组分闸共六条控制电压输出线,通过内置刀闸快速切换二次回路,同时配合弹性形变自动收线,大大提高了测试效率,保障了操作安全,值得深入研究和拓展应用。 展开更多
关键词 开关特性试验 测试线 端子切换 自动收线
下载PDF
Made-in-China Regains Face
20
作者 ZHANG ZHIPING 《Beijing Review》 2007年第50期2-2,共1页
As the grand celebration of Christmas Day approaches,people all over the world once again get caught up in the festive atmosphere that embraces the traditional spending spree.And being a time for children and gift giv... As the grand celebration of Christmas Day approaches,people all over the world once again get caught up in the festive atmosphere that embraces the traditional spending spree.And being a time for children and gift giving,it’s almost a given that most of us will be buying a toy at this holiday season.The chances that the toy chosen will carry a"Made-in-China"label are high as more than 80 percent of the world’s toys are now made here. 展开更多
关键词 AS Made-in-China regains Face
原文传递
上一页 1 2 30 下一页 到第
使用帮助 返回顶部