Results 111 to 120 of about 810,088 (152)

硅烷偶联剂建构作用强化复配混凝剂的污泥脱水

Gongye shui chuli
市政污泥的调质处理是深度脱水的核心环节。为此，利用硅烷偶联剂（Silane coupling agent，SCA）的双亲特性，与聚二甲基二烯丙基氯化铵（Poly-dimethyl diallyl ammonium chloride，PDMDAAC）联用阳离子聚丙烯酰胺（Cationic polyacrylamide，CPAM）构建复配混凝剂调理体系。采用现代分析手段考察污泥调理前后絮体形貌和组分，结果表明，SCA在PDMDAAC破坏胶体稳定性后，增强絮体与絮体间连接强度，提高泥饼抗压缩性 ...
郭一菲, 陈晨, 陆永生
doaj  

[Key role of biomechanical properties and material selection in rotator cuff repair]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Cai X, Zhou Y.
europepmc   +1 more source

[Comparative study on effectiveness of bioinductive patch-augmented arthroscopic rotator cuff repair]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Sun Y, Yao S, Gu M, Guan X.
europepmc   +1 more source

公路突发灾害示警式柔性阻断防控二次伤害技术进展

工程科学与技术
针对高速公路路基垮塌、桥隧断裂等突发灾害引发的主干道纵向断流及二次伤害防控难题，综述了示警式柔性阻断技术的研究进展。界定“柔性”在物理低波阻抗、逻辑非强制性及空间动态适配3个维度的科学内涵；剖析灾变信号与交通流动力学的时空耦合机理，构建基于监测预警时延链条与车辆制动极限的临界预警空间不等式判据；响应交通运输部关于“感知-决策-执行”全闭环管控的要求，系统归纳数字化虚拟诱导、光影空间遮断、本质安全物理反馈及应急移动布防四类技术范式；重点解析超轻质、低波阻抗介质在瞬时冲击下的动量微扰机理，论证加速度烈度指数（
赵飞, 徐益飞, 袁海峰, 毛坤, 巨能攀, 朱明, 李杰, 解明礼, 李敬阳, 李文华, 黄海峰   +10 more
doaj  

Fe²⁺活化过硫酸盐促进聚磺钻井废液固液分离研究

Gongye shui chuli
通过Fe2+活化过硫酸盐（过二硫酸盐PDS）体系强化聚磺钻井废液固液分离。单因素实验表明，在pH为3~11，PDS投加量为12~32 mmol/L，Fe2+投加量为12~32 mmol/L的条件下，出水率均在85%以上，最高可达91.66%。采用响应曲面法系统考察了Fe2+投加量、PDS投加量以及pH对上清液悬浮物浓度的影响，并建立了相应的多相回归模型。结果表明，固液分离效果最佳的反应条件为PDS投加量19.8 mmol/L、Fe2+投加量24.8 mmol/L、pH 6.72。此条件下 ...
罗文鹏, 魏平方, 谢水祥, 邓皓
doaj  

[Application of bridge combined fixation system in pediatric Bado type <b>Ⅰ</b> chronic Monteggia fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Pan, He X, Xiong Y, Yue B, Yang X, Xu Y, Su Y.   +6 more
europepmc   +1 more source

[Advances in application of hydrogels for treatment of osteonecrosis of the femoral head]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Han G, Li Q, Wang Q, Kang P.
europepmc   +1 more source

[A coronary artery plaque segmentation method based on focal weighted accuracy loss function]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Xiong F, Lu H, Li L, Jiang R.
europepmc   +1 more source

[Selection and Prognosis of Different Venous Reconstruction Methods in Laparoscopic Pancreatectomy]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Zhang J, Imdad U, Yan H, Gao W.
europepmc   +1 more source

[Toe-to-hand transplantation for thumb and finger reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zheng X.
europepmc   +1 more source