[Defect modification of calcium silicate and its application in oral bacteriostasis and tooth remineralization]. [PDF]
Hu Y +6 more
europepmc +1 more source
[Research progress on the manufacturing technology of hollow microneedles]. [PDF]
Zhou S +9 more
europepmc +1 more source
[目的] 为明确花岗岩红壤坡面沟头溯源侵蚀的关键过程及形成机制。[方法] 通过设定5个沟头高度(25,50,75,100,125 cm)研究花岗岩红壤坡面沟床跌穴发育过程。[结果] (1)随沟头高度增加,沟床径流雷诺数、径流剪切力、径流功率和射流参数(触底流速、射流剪切应力、瞬时动能、跌穴径流能耗)均表现为增加趋势。(2)红土层沟床形成“V”形跌穴,随流量增加跌穴形态变化增大,但只形成面积较小的跌穴。而砂土层在冲刷过程中,沟床跌穴发育较为明显,当流量增大到120 L/min后,沟床破碎化程度增加 ...
王建羽 +4 more
doaj
[Resin short post retention for reattachment of a fractured crown in a young permanent tooth with complicated crown-root fracture and root fracture: a case report]. [PDF]
Wang Y, Chang H, Zhang B, Liao Z.
europepmc +1 more source
目的水力条件是影响土壤侵蚀的关键因素。然而,较少有研究关注水力条件对不同地表粗糙度土壤分离能力的影响。分析不同水力条件下地表粗糙度对土壤分离能力的影响,可为土壤侵蚀过程模型的构建提供理论依据。方法采用近景摄影测量法量化地表粗糙度,结合冲刷试验,量化分析9个水力剪切力(1.61~7.04 Pa)条件下粗糙处理与对照处理的土壤分离能力,并建立基于水力参数的土壤分离能力预测模型。结果1)粗糙和对照处理的径流含沙总量均随水力剪切力的增大而增加,当水力剪切力较小时(1.64~4.69 Pa ...
资如毅 +5 more
doaj
[Diabetic Charcot neuroarthropathy initially misdiagnosed as rheumatoid arthritis and gout: A case report]. [PDF]
Gu J, Li X, Zhao J, Mu R.
europepmc +1 more source
[Application of molecularly imprinted polymers-based sensors for determination of acute coronary syndrome biomarkers]. [PDF]
Zhang Y +6 more
europepmc +1 more source
目的研究草本根系类型与密度对切沟侵蚀的定量影响,对于深入理解植物根系调控切沟侵蚀的作用机理具有重要意义。方法选取黄土丘陵沟壑区典型坡面,种植直根系(紫花苜蓿)和须根系(无芒雀麦)草本植物,通过设置不同种植行距模拟根系密度梯度,以裸地为对照,开展野外放水冲刷试验,利用运动恢复结构摄影测量法获取试验前、后的地表DEM,分析根系类型与密度对切沟侵蚀及切沟主要形态参数的影响。结果1) 在同一种植行距条件下,相比直根系处理,须根系处理的切沟规模明显较小,其切沟周长、面积和体积仅分别为前者的28%、13%和6 ...
王健衡, 李成奥, 杨扬, 刘瑛娜
doaj
[Influence of two methods of smear layer removal on the surface properties of dentin]. [PDF]
Zhu L, Tang L, Li B, Wang M, Liu Y.
europepmc +1 more source
Progress in research and development of biodegradable metallic vascular stents. [PDF]
Yang Y +6 more
europepmc +1 more source

