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辽西杨家杖子向斜构造下部隐伏花岗岩接触变质作用
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作者 郑常青 崔一兵 +3 位作者 胡鹏月 徐学纯 刘云虎 黄明国 《世界地质》 CAS 2019年第3期721-730,共10页
为了进一步确定杨家杖子钼矿区向斜构造下部是否存在隐伏花岗岩地质体,以及隐伏花岗岩接触变质作用特征,进行了大地电磁测深和钻探验证,结果显示:上富儿沟JK-1井于1 727 m、杨家杖子岭前矿南沟JK-2井于1 514.79 m、喜鹊沟JK-5井于1 159.... 为了进一步确定杨家杖子钼矿区向斜构造下部是否存在隐伏花岗岩地质体,以及隐伏花岗岩接触变质作用特征,进行了大地电磁测深和钻探验证,结果显示:上富儿沟JK-1井于1 727 m、杨家杖子岭前矿南沟JK-2井于1 514.79 m、喜鹊沟JK-5井于1 159.92 m分别钻遇到花岗岩地质体;大地电磁测深显示杨家杖子向斜构造下部1 160~1 750 m存在隐伏花岗岩地质体,虹螺山大岩基与杨家杖子向斜构造下部的花岗岩体是连通的。以喜鹊沟JK-5井为例,隐伏花岗岩接触变质影响厚度780 m±,接触变质内带,角岩-矽卡岩带,变质程度为辉石角岩相,影响厚度约500 m,发育辉钼矿化;接触变质中带,透辉石大理岩带,角闪角岩相,影响厚度100 m±,发育含有透辉石大理岩;接触变质外带,为含透闪石微晶大理岩,钠长石-绿帘角岩相,宽度180 m,180 m以上过渡到未变质石灰岩。杨家杖子钼矿的主要矿体均产于石灰岩与花岗岩接触带的矽卡岩和斑状花岗岩中,属于矽卡岩-斑岩型钼矿床。 展开更多
关键词 接触变质作用 隐伏花岗岩 大地电磁测深 钻探 杨家杖子
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一种PBAT纳米复合快递包装袋的研究 被引量:1
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作者 刘云虎 黄绍文 +1 位作者 张波 周万维 《广州化工》 CAS 2023年第1期71-73,146,共4页
PBAT与纳米碳酸钙材料共混材料制作的快递包装袋,通过在PBAT中加入纳米碳酸钙,同时加入相容剂与分散剂,制作成快递包装袋后,用电子万能材料试验机、薄膜冲击试验机、差式扫描量热仪等设备研究了PBAT/纳米碳酸钙复合快递包装袋力学性能... PBAT与纳米碳酸钙材料共混材料制作的快递包装袋,通过在PBAT中加入纳米碳酸钙,同时加入相容剂与分散剂,制作成快递包装袋后,用电子万能材料试验机、薄膜冲击试验机、差式扫描量热仪等设备研究了PBAT/纳米碳酸钙复合快递包装袋力学性能、熔融结晶性能。结果表明,在PBAT中加入纳米碳酸钙,同时加入相容剂与分散剂,制作成快递包装袋产品,不仅可进一步降低可生物降解薄膜用料的成本,且力学性能满足标准要求。 展开更多
关键词 PBAT/纳米碳酸钙 快递包装袋 研究
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建筑工程现浇混凝土结构外观质量缺陷原因与控制 被引量:2
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作者 刘云虎 李雨腾 《品牌与标准化》 2022年第5期81-83,共3页
本文对建筑工程中常见的现浇混凝土结构外观质量缺陷的原因以及控制方法进行探究,并提出几点建议,供相关单位参考。
关键词 建筑工程 现浇混凝土 质量缺陷 控制
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用于肿瘤治疗的线粒体靶向配体和纳米载体递释系统研究进展
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作者 刘云虎 孙涛 《聊城大学学报(自然科学版)》 2020年第3期87-96,共10页
作为人体细胞中的重要能量来源,线粒体对肿瘤的发生与发展有重要作用.将抗癌药物靶向递送至线粒体具有较高的研究价值.目前主流的两种实现方法包括线粒体靶向配体-药物缀合物和线粒体靶向的纳米载体递释系统.对两种方法中使用的线粒体... 作为人体细胞中的重要能量来源,线粒体对肿瘤的发生与发展有重要作用.将抗癌药物靶向递送至线粒体具有较高的研究价值.目前主流的两种实现方法包括线粒体靶向配体-药物缀合物和线粒体靶向的纳米载体递释系统.对两种方法中使用的线粒体靶向配体和纳米载体的研究现状进行了综述. 展开更多
关键词 肿瘤 线粒体靶向 纳米载体
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Characteristics associated with falls among the elderly within aged care wards in a tertiary hospital: a retrospective case-control study 被引量:2
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作者 CHEN Xue-li liu yun-hu +2 位作者 Daniel KY Chan SHEN Qing Huong Van Nguyen 《Chinese Medical Journal》 SCIE CAS CSCD 2010年第13期1668-1672,共5页
Background Falls are the most frequently reported adverse events in inpatient settings. We conducted a retrospective case-control study of inpatient falls within aged care wards in a tertiary hospital to investigate t... Background Falls are the most frequently reported adverse events in inpatient settings. We conducted a retrospective case-control study of inpatient falls within aged care wards in a tertiary hospital to investigate the associated characteristics of elderly patients suffering from falls and fall-related characteristics. Methods Consecutive retrospective cross-sectional design spanned July 2006 to December 2008. Patient group: Information on all aged care inpatients who suffered from 1 or more falls was extracted from Incident Information Management System (IIMS). Further details about the particular admission(s) were obtained from patients' medical records, e.g., patients' characteristics and circumstances surrounding the falls. Randomly selected aged care patients who did not suffer from a fall and who were discharged from the hospital in the same period served control group. Characteristics among patients with single fall and recurrent falls, as well as non-railers were compared. Results Of the 438 falls evaluated, 71.9% occurred in patients' room and 18.9% in patients' bathroom/toilet. The common activities were moving/transferring and taking shower/toileting, respectively, 70.3%, 12.1% while occurring falls; and time of falls had a high peak during 9:00-11:00 a.m. Many were unassisted while falling. The common contributing factors for fall were intrinsic factors. Patients with recurrent falls were more likely to have lower Mini-Mental State Examination (MMSE) score. Logistic regression analysis showed length of stay longer than five weeks, dementia and stroke were independent risk factors for recurrent falls; and living in hostel/nursing home preadmission, needing assistance with mobility, cognitive impairment, stroke, incontinence and arthritis/osteoporosis were independent risk factors for fall. Conclusions In an aged care ward, falls are independently associated with recurrent factors. Cognitive impairment/dementia was a strong risk factor for falls, and main causes leading to fall were intrinsic factors. For patients with cognitive impairment/dementia and behavioral disorder providing special and effective interventions is of paramount importance for reducing the incidence of fall in an aged care ward in hospital settings. 展开更多
关键词 FALLS recurrent falls INPATIENTS the elderly
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