Results 11 to 20 of about 66,805 (203)

Experimental investigation on surrounding rock stress and deformation rule of TBM tunneling in deep mixed strata

open access: yesRock and Soil Mechanics, 2021
To investigate the relation among the stress, deformation, rupture, and stratigraphic effects of surrounding rocks of the supported and unsupported TBM tunnelling in deep mixed strata, the experimental investigation was conducted by a similarity model ...
LI Yuan-hai   +3 more
doaj   +1 more source

The global burden of tuberculous meningitis in adults: A modelling study

open access: yesPLOS Global Public Health, 2021
Tuberculous meningitis (TBM) is the most lethal form of tuberculosis. The incidence and mortality of TBM is unknown due to diagnostic challenges and limited disaggregated reporting of treated TBM by existing surveillance systems. We aimed to estimate the
Peter J. Dodd   +9 more
doaj   +3 more sources

Research on surrounding rock feature identification method of coal mine roadway based on tunneling parameters

open access: yesMeikuang Anquan, 2023
In the coal mine tunnel TBM excavation, in order to identify the broken surrounding rock state in time during the excavation process, a method based on tunnel excavation parameters for identifying the surrounding rock characteristics of coal mine tunnels
Xibin ZHANG   +6 more
doaj   +1 more source

Assessment of optimal tunnel boring machine (TBM) excavation method by analyzing stability of tunnels in squeezing rock conditions (Case Study: Chamshir Tunnel) [PDF]

open access: yesInternational Journal of Railway Research, 2023
The implementation of infrastructure projects, such as tunnels, in the transportation industry is always considered one of the most expensive projects for the development of countries.
Navid Sabet   +3 more
doaj  

Tuberculous Meningitis: The Microbiological Laboratory Diagnosis and Its Drug Sensitivity Patterns

open access: yesJurnal Respirasi, 2017
Background: Tuberculosis continues one of the major challenges to global health. Mycobacterium tuberculosis complex can affect any organ other than the lung parenchyma, include central nervous system.
Titiek Sulistyowati   +3 more
doaj   +1 more source

An Experimental Study of a Pico Hydro Turbine

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
Today, the storage and transporting of electricity from one place to another is still an unsolved problem. Besides, it is not economical to install power lines everywhere for low-voltage electronic circuits such as valves which are used to reduce leakage
Ufuk Durmaz   +4 more
doaj   +1 more source

طراحی بهینه چیدمان ستاره‌ای ابزار برش در TBM با بهره‌گیری از الگوریتم بهینه‌سازی فراابتکاری گرگ‌های خاکستری GWO [PDF]

open access: yesنشریه مهندسی معدن
چیدمان ابزار برش در کله حفار ماشین TBM به عنوان یکی از عوامل موثر بر افزایش راندمان عملیات حفاری، عمرمفید TBM، عملکرد مناسب ابزار برش و کاهش هزینه‌های حفاری محسوب می‌شود. در طراحی چیدمان ابزار برشTBM  یک مساله بهینه‌سازی دارای چند هدف با قیود غیرخطی مطرح
علی عالی انوری   +2 more
doaj   +1 more source

A case report of tubercular meningitis initially presenting as transient paraparesis

open access: yesMRIMS Journal of Health Sciences, 2017
Tuberculosis is the world's leading cause of death from a single infectious agent and is caused by mycobacterium tuberculosis. Central nervous system tuberculosis is most serious complication of tuberculosis in children.
Madoori Srinivas, Dikshitha
doaj   +1 more source

Constrained analytical interrelations in neutrino mixing [PDF]

open access: yes, 2015
Hermitian squared mass matrices of charged leptons and light neutrinos in the flavor basis are studied under general additive lowest order perturbations away from the tribimaximal (TBM) limit in which a weak basis with mass diagonal charged leptons is ...
B Brahmachari   +20 more
core   +1 more source

A Numerical Study of a Pico Hydro Turbine

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
Pico hydro turbines are suitable for low head applications in power plants since their efficiency is more stable than other turbine types. In some situations, computational fluid dynamics (CFD) has also been utilized as well as experimental studies for ...
Ümit Pekparlak   +4 more
doaj   +1 more source

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