Zobrazeno 1 - 10
of 584
pro vyhledávání: '"Yang Liyun"'
Publikováno v:
矿业科学学报, Vol 8, Iss 5, Pp 677-687 (2023)
When the surface strain field of concrete structure is measured by digital image correlation(DIC)technology under complex light conditions, the decorrelation effect of the pattern will be caused by the variation in light intensity. For this problem,
Externí odkaz:
https://doaj.org/article/ce774264c4314bfb846459347441377d
Publikováno v:
矿业科学学报, Vol 8, Iss 4, Pp 538-547 (2023)
In smooth pre-splitting blasting, two collinear cracks extending opposite to each other between adjacent holes will first avoid each other and then attract each other, resulting in crack propagation path that often presents hooked or butterfly-shaped
Externí odkaz:
https://doaj.org/article/b7f897ef03544d21ac9b86967dd60ded
Autor:
CAO Min (曹敏), CHEN Siling (陈思伶), LI Na (李娜), JI Tian (纪甜), YANG Yan (杨燕), YANG Liyun (杨丽云), JIAN Huiqing (蹇会清)
Publikováno v:
中西医结合护理, Vol 9, Iss 5, Pp 113-115 (2023)
Objective To investigate the effect of salmon calcitonin on bone mineral density (BMD)of patients with osteoporotic vertebral compression fractures (OVCFs). Methods Totally 50 OVCFs were divided into the study group and control group, with 25 cases i
Externí odkaz:
https://doaj.org/article/34ec0ef751db4e2ea59200c966acbfa6
Publikováno v:
矿业科学学报, Vol 7, Iss 2, Pp 193-199 (2022)
In order to study the relationship between the tensile and compressive strength of the concrete commonly used in engineering and the size of specimen, a statistical model of the size effect on concrete strength was established based on the generalize
Externí odkaz:
https://doaj.org/article/09ca0b9d63c94af8a67d5af924627ae5
Publikováno v:
Geofluids, Vol 2023 (2023)
To study the effects of confining pressure and joint material properties on stress evolution and fracture behavior of jointed rock mass under SHPB impact load, the numerical software LS-DYNA and the indoor SHPB impact system are used to carry out exp
Externí odkaz:
https://doaj.org/article/0c31806ccca240a58d113977c10ef9e4
Publikováno v:
矿业科学学报, Vol 6, Iss 5, Pp 558-568 (2021)
In order to study the mechanical behavior characteristics of dynamic crack initiation and propagation of surrounding rock of adjacent roadway under impact load, with the help of a new digital laser dynamic caustics experimental system, a rock-like me
Externí odkaz:
https://doaj.org/article/730cb541a50f496fa23dd6c19a1e6f74
Publikováno v:
矿业科学学报, Vol 2, Iss 4, Pp 330-335 (2017)
The influence of offset crack on dynamic impact fracture behavior is studied using the digital-leaser dynamic caustics system in conjunction with impact loading device. An inner mother crack along loading direction and its offset edge crack in PMMA w
Externí odkaz:
https://doaj.org/article/8b2f0931b4e74a33adbf5ab5adcadc2e
Publikováno v:
矿业科学学报, Vol 1, Iss 2, Pp 140-145 (2016)
In order to control the horizontal energy transfer of freezing pipe, a new type freezing pipe with two chambers was set up.The temperature field of this new freezing pipe was analyzed by model test and numerical simulation.The results show that the t
Externí odkaz:
https://doaj.org/article/7d39277cf7ad489085469e2dce0c48ca
Publikováno v:
In Experimental Cell Research 1 October 2024 442(2)
Publikováno v:
In Theoretical and Applied Fracture Mechanics October 2024 133 Part A