Results 101 to 110 of about 676,557 (290)

Sustainable Fabrication of Tailored Bone Substitutes: From High‐Throughput Scaffold Manufacturing, Scaled‐Up HMSC Expansion to Dynamic Cultivation in a Perfusion Bioreactor

open access: yesAdvanced Science, EarlyView.
ABSTRACT The demand for off‐the‐shelf biocompatible bone substitutes has driven the development of numerous independent in vitro technologies to generate products resembling physiological tissues. Due to technical challenges and overly simplified cultivation approaches/niches, the end‐products are often uniformly shaped and inferior to native bone ...
Franziska Braun   +10 more
wiley   +1 more source

Study on deformation law of roadway surrounding rock under dynamic disturbance

open access: yesMeikuang Anquan
The surrounding rock is in a state of high stress during deep mining of coal mine, and the dynamic disturbance may lead to the instability of the surrounding rock and even rock burst.
Mingkun LUO   +8 more
doaj   +1 more source

The Mind From Within: Visceral Roots of Human Cognition

open access: yesAdvanced Science, EarlyView.
The physiological activity of visceral organs, such as the heart, the lungs, and the gut, is surprisingly linked to many sophisticated mental operations, such as remembering the past, being aware of ourselves, making choices, and forging social bonds.
Alessandro Monti   +1 more
wiley   +1 more source

Ventilation-on-Demand: Quantity or Quality — A Pilot Trial at Barrick Gold\u27s Bousquet Mine [PDF]

open access: yes, 1999
Common to many established mines in Canada, is the problem that their ventilation systems are continually being stretched to meet new needs that were not anticipated in the original design.
Hardcastle, Stephen G.   +3 more
core   +1 more source

Ventilation requirements for diesel equipment in underground mines : Are we using the correct values?

open access: yes, 2017
Ventilation is the primary means of diluting atmospheric contaminants in underground mines. The majority of equipment in underground hard rock mines are diesel powered vehicles, which produce toxic gases such as Carbon Monoxide (CO) and Oxides of ...
Halim, Adrianus,
core  

Effective utilization of tracer gas in characterization of underground mine ventilation networks

open access: yes, 2016
Tracer gases are an effective method for assessing mine ventilation systems, especially when other techniques are impractical. Based on previously completed laboratory and field experiments, this paper discusses some common and challenging issues ...
Jong, Edmund C.   +6 more
core   +1 more source

Synchronization‐Dissipation in the Cardiorespiratory System

open access: yesAdvanced Science, EarlyView.
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border   +3 more
wiley   +1 more source

Advancing Coal Mine Ventilation into the Twenty First Century with High Productivity Mining Systems

open access: yes, 1988
The Australian mining industry can expect to be working internationally competitive high quality coal mines during the twenty-first century. Cost efficient mining methods such as high productivity longwall units with heavy reliance on remote control will
Gillies, Stewart
core   +1 more source

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