Results 31 to 40 of about 66,805 (203)

مقایسه روش‌های مختلف تعیین سایندگی سنگ‌ها [PDF]

نشریه مهندسی معدن, 2013
در حال حاضر، بخش عمده‌ای از فضاهای زیرزمینی عمرانی و معدنی، بوسیله دستگاه‌های حفاری مکانیزه احداث می‌شوند. همچنین، حفر گمانه‌های ژئوتکنیکی، معدنی و چاه‌های نفت و گاز، حاصل نفوذ مته به داخل سنگ است.
محمد تقی همزبان, حسین معماریان, جمال رستمی   +2 more
doaj  

Consistency of perturbed Tribimaximal, Bimaximal and Democratic mixing with Neutrino mixing data

, 2018
We scrutinize corrections to tribimaximal (TBM), bimaximal (BM) and democratic (DC) mixing matrices for explaining recent global fit neutrino mixing data.
Garg, Sumit K.
core   +2 more sources

Model for penetration of the TBM disc cutter under laser pre-drilling based on stress concentration in a circular hole and its test verification

Yantu gongcheng xuebao
The laser generator is installed on the cutterhead of the tunneling boring machine (TBM), and the high-energy laser is used to assist the TBM tunneling operation, which is expected to achieve the purpose of thermal-mechanically efficient rock breaking in
ZHANG Kui 1, 2, CHEN Zhenyu 2, YANG Chang 2, ZHENG Xuejun 2, ZHANG Xuhui 3
doaj   +1 more source

Neutrophil-Associated Central Nervous System Inflammation in Tuberculous Meningitis Immune Reconstitution Inflammatory Syndrome.

, 2014
Background. The immunopathogenesis of tuberculosis-associated immune reconstitution inflammatory syndrome (IRIS) remains incompletely understood, and we know of only 1 disease site-specific study of the underlying immunology; we recently showed that ...
Coussens, AK, Deffur, A, Ismail, Z, Lesosky, M, Marais, S, Meintjes, G, Pepper, DJ, Schutz, C, Wilkinson, KA, Wilkinson, RJ   +9 more
core   +1 more source

Decreased mortality seen in rifampicin/multidrug-resistant tuberculous meningitis treated with linezolid in Shenzhen, China

BMC Infectious Diseases, 2021
Background The morbidity of rifampicin/multidrug-resistant tuberculous meningitis (RR/MDR-TBM) has shown an increasing trend globally. Its mortality rate is significantly higher than that of non-rifampicin/multidrug-resistant tuberculous meningitis (NRR ...
Mu-Tong Fang, You-Feng Su, Hui-Ru An, Pei-Ze Zhang, Guo-Fang Deng, Hou-Ming Liu, Zhi Mao, Jian-Feng Zeng, Guobao Li, Qian-Ting Yang, Zhong-Yuan Wang   +10 more
doaj   +1 more source

Evaluation of Mobile Risk Perception Training System for Improving the Safety Awareness of Construction Workers

Buildings, 2023
Toolbox Meeting (TBM) activities conducted before work at construction sites are representative activities with characteristics such as work sharing and improving safety awareness.
Minji Kim, Dongmyung Jo, Jaewook Jeong
doaj   +1 more source

Numerical Investigation of Effective Parameters on the Tunnel - Canal Interaction (A Case Study: Tabriz Line 2 Urban Subway) [PDF]

Analytical and Numerical Methods in Mining Engineering
Tunneling in urban areas is more prone to vulnerable problems that may threaten life safety or cause urban infrastructure disasters. Tunneling parameters such as face pressure, are the important controlling aspects that can avoid disasters or cause some,
Meysam Naghizadeh Safa, Hamid Zarei, AmirHossein Nickjou Tabrizi, Rahman Mirzaei, Hamid Chakeri   +4 more
doaj   +1 more source

Tri-Bimaximal Mixing from Twisted Friedberg-Lee Symmetry [PDF]

, 2009
We investigate the Friedberg-Lee (FL) symmetry and its promotion to include the $\mu - \tau$ symmetry, and call that the twisted FL symmetry.Based on the twisted FL symmetry, two possible schemes are presented toward the realistic neutrino mass spectrum ...
A. Dighe, A. Zee, C. Chen, C.S. Huang, C.S. Lam, E. Ma, E. Ma, F. Bazzocchi, F. Plentinger, G. Altarelli, G. Altarelli, G. Altarelli, H. Harari, H. Zhang, I. Medeiros Varzielas de, K.R.S. Balaji, M. Fukugita, M. Gell-Mann, M. Tanimoto, M. Tanimoto, M.C. Chen, N. Haba, N. Haba, N. Haba, P. Minkowski, P.F. Harrison, P.F. Harrison, R. Friedberg, R.N. Mohapatra, Ryo Takahashi, S. Antusch, S. Luo, T. Schwetz, Takeshi Araki, W. Grimus, Z.Z. Xing, Z.Z. Xing   +36 more
core   +2 more sources

Deformable Eutectic Alloy With Near‐Theoretical Yield Strength via Hierarchical Nanoscale Multiphases and Sessile Defects

Advanced Science, EarlyView.
A CoCrFeNiTa0.4 eutectic high‐entropy alloy achieves a near‐theoretical yield strength of 2.6 GPa with 13.6% plasticity. This breakthrough stems from a hierarchical nanostructure (FCC‐Laves lamellae with L12/D022 precipitates), which alleviates the inter‐phase modulus/hardness mismatch through synergistic strengthening and toughening, guiding the ...
Yusha Luo, Qianqian Wang, Bo Sun, Ruixin Sheng, Zhijun Guo, Gaopeng Zou, Zhe Jia, Yang Tong, Gang Sha, Peter K. Liaw, Baolong Shen   +10 more
wiley   +1 more source

New Parametrization of Neutrino Mixing Matrix

, 2011
Global fits to neutrino oscillation data are compatible with tri-bimaximal mixing pattern, which predicts $\theta_{23} = \frac{\pi}{4}, \theta_{12} = \sin^{-1} (\frac{1}{\sqrt{3}})$ and $\theta_{13} = 0$.
Antusch S., H. B. BENAOUM, He X.-G.
core   +1 more source