Results 41 to 50 of about 2,151 (194)

A case for rethinking the gender targeting of child cash transfers in Brazil and South Africa: Assessing caregiver sex in determining stunting in child beneficiaries

open access: yesInternational Social Security Review, Volume 77, Issue 4, Page 49-77, October/December 2024.
Abstract Little is known about the effects of the receipt of child‐centred cash transfers by men. This article tests whether caregiver sex matters in determining stunting (low height for age) in child beneficiaries of Brazil's Bolsa Família and South Africa's Child Support Grant using household survey data.
Zoheb Khan, Leila Patel
wiley   +1 more source

长距离330 kV电缆护套交叉互联接地方式研究及回流缆优化布置方法

open access: yesGaoya dianqi, 2020
随着电压等级的升高和电缆的增长,为了实现330 kV电缆线路设计的合理化、规范化,给出护套保护器等装置的选型依据,文中研究了长距离330 kV电缆的两种护套交叉互联方式。首先根据已有的330 kV电缆参数和隧道敷设方式,使用电磁暂态分析软件EMTP-ATP进行仿真建模,对正常运行时线路各点护套感应电压进行分析,得出其分布规律和两种不同护套接地方式的感应电压特征。其次,探讨了系统发生单相短路接地故障时,故障线路和非故障线路的护套故障感应电压波形特点以及分布规律,将两种接地方式下的感应电压数据进行了对比 ...
张军强   +8 more
doaj  

Minimally Invasive Surgery Within Minimally Invasive Surgery: Development and Application of Natural Orifice Specimen Extraction Surgery for Colorectal Tumors [PDF]

open access: yes
This article systematically elaborates on the origin and development of natural orifice specimen extraction surgery (NOSES) in the treatment of colorectal tumors. By analyzing several retrospective studies, we summarize the scientific basis, feasibility,
Changyuan GAO, Haitao ZHOU
core   +1 more source

2021年技术与创新支持中心(TISC)报告 ::陪伴当地创新者从研究走向产品. [PDF]

open access: yes, 2022
这份关于TISC计划的年度报告强调了2021年的主要趋势和里程碑,重点是该计划和88个国家中的TISC如何继续扩充和发展资源与服务 ...

core   +1 more source

A path to human‐raccoon dog harmony: Identifying factors influencing the tolerance of urban residents in Shanghai towards a neglected species

open access: yesPeople and Nature, Volume 6, Issue 3, Page 1277-1287, June 2024.
Abstract Human‐wildlife interactions become increasingly common in urban areas across all continents and ecosystem types. Depending on the context, human‐wildlife interactions can be categorized as harmonious, neutrality, or in conflict and raises cultural, economic and ecological challenges in maintaining urban biodiversity.
Qianqian Zhao   +7 more
wiley   +1 more source

500 kV变压器纯瓷套管漏油事故调查及防范措施

open access: yesDianci bileiqi, 2022
变压器套管渗漏油是电力变压器运行中的典型故障之一,及时发现、正确处理渗漏油故障以及精准的故障诊断对维护电网安全具有重要意义。针对3起500 kV变压器纯瓷套管漏油事件展开调查,通过结构分析、解体检查,得出导致套管漏油缺陷原因为套管密封结构设计不当、胶装过程控制存在问题以及密封垫质量问题,并分别从运行维护和设计工艺角度提出相应的防范措施,为同类型套管的制造工艺、故障诊断和运行维护提供参考。
徐鹏   +4 more
doaj  

NOSES左结直肠癌根治术取标本困难病例的回顾性分析 [PDF]

open access: yes, 2018
目的评价经自然腔道取出标本的全腹腔镜下结直肠癌根治术使用蔡氏套管器的临床应用价值。方法通过自制的专利器械——蔡氏套管器,对70例结直肠癌患者,行经自然腔道取出标本的全腹腔镜下结直肠癌根治术,并对患者的临床及手术资料进行回顾性分析。结果 70例患者均在全腹腔镜下完成手术,标本均经过肛门取出。其中降结肠癌7例,乙状结肠癌35例,直乙交界处癌2例,直肠中上段癌26例。无中转开腹和围手术期死亡。通过分析,术前使用\"体质肿瘤指数\"进行患者的评分,评估手术标本取出难易程度,同时 ...
丁志杰   +7 more
core  

The practicality of an improved method of intravenous infusion exhaust specialized in operating room during anesthesia [PDF]

open access: yes
目的  评价一套新的静脉输液排气改进方法在手术室麻醉期间的实用性。方法  随机邀请新来手术室的实习护士10位,在培训前、培训后2h和培训后1天这3个时间点,分别进行3次静脉输液排气的测试。记录各位实习护士的操作时间,并观察其在培训前静脉输液排气操作上存在的问题。结果  与培训前比较,实习护士在培训后2h和后1天的静脉输液排气操作时间缩短,差异有统计学意义(P < 0.0001,P=0.0001),并且测试成绩稳定。结论  经笔者改进的静脉输液排气方法,除了保证排气成功外,能有效缩短排气操作时间 ...
Cao, Wei, Jiang, Fang-qin, JIn, Xin
core   +2 more sources

新型冠状病毒肺炎疫情下实施外科手术的思考和建议 [PDF]

open access: yes, 2020
自2019年底新型冠状病毒肺炎爆发以来,因其传染力强、人群易感性高、潜伏期长和临床表现多样化等特点,影响医院的正常诊疗工作程序。在此疫情之下,临床医生应掌握新冠肺炎的临床表现和流行病学特点,顺应新形势下新冠肺炎的诊疗指南,在做好外科疾病的分类诊疗和合理选择治疗方案,以及护理流程优化的同时,根据不同的风险等级 ...
陈伟, 黄美近
core  

一交叉互联高压电缆绝缘故障的理论及仿真分析

open access: yesGaoya dianqi, 2014
笔者探讨了一起110 kV交叉互联电缆外护套及主绝缘烧损击穿事故的原因,计算和仿真了电缆在两种极端情况下金属护套的悬浮电位和电缆胶皮外护套悬浮电位之间的电位差,并根据事故电缆的实际状况给出了故障起因。结果表明:电缆金属护套只要形成中性点连接,即使在不接地的情况下其悬浮电位依然很低;在电缆金属护套和胶皮外护套石墨层均不接地的情况下,金属护套和石墨层悬浮电位接近运行电压,但此时电缆胶皮外护套承担的电压差仅几百伏,此种情况不会对电缆运行造成危害;文中分析过程为进一步深入理解电缆故障起因提供了新认识。
王谦, 郝建, 张电, 苏亚西
doaj  

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