Results 61 to 70 of about 187 (103)
Applicatoin of chitosan-based hydrogel in oral tissue engineering. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023 Wang Y +5 more
europepmc +1 more source
Dianci bileiqi氧化锌压敏电阻在重复过电压下性能会逐渐劣化，最终可能导致短路、起火或爆炸，目前单次耐受测试无法全面反映ZnO压敏电阻在实际使用中的预期性能，亟需对其冲击老化特性及失效机理进行深入研究。文中建立了ZnO压敏电阻重复冲击电流试验实验平台，研究了以压敏电压、冲击残压及泄漏电流为表征的ZnO压敏电阻保护特性劣化特性。研究结果表明，压敏电阻的冲击老化寿命随着冲击密度的增加而显著减少，这是由于电阻片尺寸效应引起的微观缺陷增加所致。此外，不同电流幅值条件下的冲击间隔对老化过程也有显著影响 ...
李宣健楠 +4 more
doaj
[Establishment and application of key technologies for periodontal tissue regeneration based on microenvironment and stem cell regulation]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanMa B +10 more
europepmc +1 more source
[Recent research on neurodevelopmental disorders in children]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2023 Zhu HM, Yuan CH, Liu ZS.
europepmc +1 more source
[Extracellular matrix materials and tissue regeneration and repair]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhao L, Xie H.
europepmc +1 more source
[Recent application advances of covalent organic frameworks for solid-phase extraction]. [PDF]
Se Pu, 2023 Gao YY +8 more
europepmc +1 more source
Dianci bileiqi氧化锌（ZnO）压敏陶瓷是金属氧化物避雷器的核心元件。ZnO电阻片的残压比、电位梯度、漏电流等性能参数与避雷器的保护性、可靠性、轻便性有着直接关联。通过调控ZnO电阻片在烧结降温过程中900 ℃ — 400 ℃温度区间内的降温速率，实现了残压比、电位梯度和漏电流的协同优化。通过宽带介电温谱，发现本征点缺陷浓度随降温速率增加而增大，锌填隙缺陷浓度的增加相较于氧空位缺陷浓度的增加更为显著。通过解耦残压比和电位梯度的影响因素，发现ZnO电阻片残压比的变化主要受降温速率影响 ...
厍海波 +9 more
doaj
[Application and advances of exosome-hydrogel system in wound healing]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiQiu Y, Tan Q.
europepmc +1 more source
[Consensus of Chinese Experts on Nursing of Lung Cancer in the Elderly (2022 Edition)]. [PDF]
Zhongguo Fei Ai Za Zhi, 2023 Lung Cancer Specialty Committee of Chinese Elderly Health Care Association +1 more
europepmc +1 more source
[Research advances in three-dimensional bioprinted wound dressings]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiShi C, Lei C, He L, Liao D.
europepmc +1 more source