In clinical practice, dentists sometimes encounter phenomena that cannot be explained by modern western medical concepts;for example, the patient’s medical symptoms improve by bringing medicines or dentures close to ...
supported by the National Natural Science Foundation of China(No.52005470);the Natural Science Foundation of Zhejiang Province(No.LQ21E050020);the Fundamental Research Funds for the Provincial Universities of Zhejiang(No.2021YW17),China.
The nitrile butadiene rubber(NBR)hardness effect on the sealing characteristics of hydraulic O-ring rod seals is analyzed based on a mixed lubrication elastohydrodynamic model.Parameterized studies are conducted to re...
Supported by the National Key Research and Development Program of China(No.2018YFC0808902).
The O-ring in the rotary dynamic sealing system of gas meters should have outstanding long-term sealing performance under the conditions of high and low temperature,which can ensure the safety of gas meters.In this pa...
Project supported by the National Natural Science Foundation of China“Study on the mechanism of force-chemical damage of screw sealing surface of H_(2)S/CO_(2)gas well completion string under static load,vibration and corrosion”(No.51774249);Sichuan Science and Technology Program(No.21JCQN0066).
To explore the damage behavior of O-ring in acid environment,a high-temperature and high-pressure(HTHP)autoclave was used to simulate the service environment of O-ring,and then 168h corrosion test of hydrogenated nitr...
supported by the National Natural Science Foundation of China(22273101,22103082,22125303,92061203,and 22288201);the Youth Innovation Promotion Association of the Chinese Academy of Sciences(CAS)(2020187);the Innovation Program for Quantum Science and Technology(2021ZD0303304);Chinese Academy of Sciences(GJJSTD20220001);Dalian Institute of Chemical Physics(DICP DCLS201702);K.C.Wong Education Foundation(GJTD-201806)。
Metal carbides play an important role in catalysis and functional materials.However,the structural characterization of metal carbide clusters has been proven to be a challenging experimental target due to the difficul...
Supported by the National Foundation for Education Sciences Planning,No. BLA 200216;the National Key Research and Development Plan,Ministry of Science and Technology of the People’s Republic of China,No. 2016YFC0105207
BACKGROUND Radiation therapy,especially the development of linear accelerators,plays a key role in cancer management.The fast-rotating coplanar O-ring Halcyon Linac has demonstrated many advantages.The previous litera...
This study was supported by JSPS KAKENHI Grant Number JP20H0244 from the Ministry of Education,Culture,Sports,Science,and Technology of Japan.
We report a method for laser-assisted electrophoretic deposition using a Laguerre-Gaussian beam for maskless patterning of metal rings and tubes.These are structures of utmost importance,particularly in photonic devic...
In clinical practice, dentists sometimes encounter phenomena that cannot be explained by common medical concepts;for example, patients’ bodily symptoms immediately improved after adjusting a denture that was not even...
Project supported by the National Basic Research Program of China(Grant Nos.2017YFA0303700 and 2019YFA0308700);the National Natural Science Foundation of China(Grant Nos.61632021 and 11690031);the Open Funds from the State Key Laboratory of High Performance Computing of China(HPCL,National University of Defense Technology).
We propose an on-chip reconfigurable micro-ring to engineer the spectral-purity of photons.The micro-ring resonator is designed to be coupled by one or two asymmetric Mach-Zehnder interferometers and the coupling coef...
We present a case of a woman with refractory lower back pain and forearm tendinitis, which improved dramatically after morphological modification of natural teeth. The subject was a 35-year-old Japanese woman, who was...