Results 41 to 50 of about 517,779 (310)

Evaluation of emergency evacuation in school buildings_ Protocol for a Systematic Review

open access: yesInternational Journal of Occupational and Environment Safety, 2019
Children are amongst the most vulnerable affected groups by natural and human-made disasters. Disaster preparedness education programs have been developed to help reduce risk and increase resilience for hazardous events.
Raquel Martins, J. Duarte, Mário Vaz
doaj   +1 more source

Aspects of energy requirements for rock drilling [PDF]

open access: yes, 1974
Development of laboratory rock breakage techniques to relate energy and surface area produced by slow compression, drop hammer and stamp mill. A detailed study of laboratory rotary-percussive drilling in a wide range of rocks under different ...
Wootton, David
core  

Diagnostic Use of Testing for Novel Murine Autoantibodies for Sjögren Disease in the Rheumatology Outpatient Setting

open access: yesArthritis Care &Research, EarlyView.
Objective The goal was to assess the diagnostic performance of three novel autoantibodies (NA) for Sjögren disease (SjD) by comparing NA prevalence in patients with SjD, other autoimmune rheumatic diseases (ARDs), nonspecific chronic sialadenitis (CS), and controls.
Chadwick R. Johr   +5 more
wiley   +1 more source

Preliminary Investigation into Measurement While Drilling as a Means to Characterize the Coalmine Roof

open access: yesResources, 2020
The variable nature of the coalmine roof poses a challenge to roadway stability during underground coal mining. There have been fatalities and financial losses in the coal mining industry due to roadway failures and roof falls.
Manoj Khanal   +3 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Drilling for microbes [PDF]

open access: yesProceedings of the National Academy of Sciences, 2013
For scientists who study subseafloor sediment, it’s not unusual to spend a lot of time at sea aboard a ship with a gaping hole in its hull. Known as a moon pool, the hole serves as a portal for the ship’s weighty drilling equipment to retrieve core samples of seafloor sediment thousands of meters below. Aboard …
openaire   +2 more sources

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

Drill Based Model of Forehand Drive Practice in Table Tennis for Beginner Athlete

open access: yesActive: journal of physical education, sport, health and recreation, 2020
The purpose of study was to develop drill based model of forehand drive practice in table tennis for beginner athlete. The forehand drive had important role in table tennis playing.
Bessy Sitorus Pane   +2 more
doaj   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

Realization of Borehol V1 Till V4 at Liquidation of Shaft Leopold Situated in the Solivar Part of the Town of Presov [PDF]

open access: yesActa Montanistica Slovaca, 2004
Leopold shaft is situated in the Solivar part of the town of Presov, object (object of National Cultural Monument Gapla). Strong ascent of the level of natural salt brine resulted in the change of stress state of rock massif with subsequent deformation ...
Wittenberger Gabriel   +4 more
doaj  

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