Results 31 to 40 of about 7,749,842 (359)

Room-Temperature Synthesis of Tubular Hexagonal Boron Nitride under Pressure

open access: yesCrystals, 2023
Hexagonal boron nitride (h-BN) exhibits interesting optical and mechanical properties, including chemical and thermal stability. Extensive techniques have been applied for the realization of h-BN at high temperatures.
Junkai Li   +4 more
doaj   +1 more source

A Randomized Trial of Intensive versus Standard Blood-Pressure Control.

open access: yesNew England Journal of Medicine, 2017
To the Editor: Wright et al. (Nov. 26 issue)1 report on the Systolic Blood Pressure Intervention Trial (SPRINT). By focusing on blood-pressure levels, rather than on specific antihypertensive agents, this trial follows a rich heritage of government ...
Benjamin Vipler   +4 more
semanticscholar   +1 more source

Driving pressure and survival in the acute respiratory distress syndrome.

open access: yesNew England Journal of Medicine, 2015
BACKGROUND Mechanical-ventilation strategies that use lower end-inspiratory (plateau) airway pressures, lower tidal volumes (VT), and higher positive end-expiratory pressures (PEEPs) can improve survival in patients with the acute respiratory distress ...
M. Amato   +12 more
semanticscholar   +1 more source

Monolithic 45 Degree Deflecting Mirror as a Key Element for Realization of 2D Arrays of Laser Diodes Based on AlInGaN Semiconductors

open access: yesMicromachines, 2023
In this study, we propose a solution for realization of surface emitting, 2D array of visible light laser diodes based on AlInGaN semiconductors. The presented system consists of a horizontal cavity lasing section adjoined with beam deflecting section in
Kiran Saba   +7 more
doaj   +1 more source

Everything you always wanted to know about metallic hydrogen but were afraid to ask

open access: yesMatter and Radiation at Extremes, 2020
The hydrogen molecule is made from the first and lightest element in the periodic table. When hydrogen gas is either compressed or cooled, it forms the simplest molecular solid. This solid exhibits many interesting and fundamental physical phenomena.
Eugene Gregoryanz   +5 more
doaj   +1 more source

Political pressure deflection [PDF]

open access: yesPublic Choice, 2004
Much economic policy is deliberately shifted away from direct political processes to administrative processes—political pressure deflection. Pressure deflection poses a puzzle to standard political economy models which suggest that having policies to ‘sell’ is valuable to politicians.
Maurizio Zanardi   +2 more
openaire   +13 more sources

Graded intrafillable architecture-based iontronic pressure sensor with ultra-broad-range high sensitivity

open access: yesNature Communications, 2020
Sensitivity is a crucial parameter for flexible pressure sensors and electronic skins. While introducing microstructures (e.g., micro-pyramids) can effectively improve the sensitivity, it in turn leads to a limited pressure-response range due to the poor
Ningning Bai   +12 more
semanticscholar   +1 more source

Pressure points [PDF]

open access: yesCurrent Biology, 2005
Tourism is booming worldwide with eco-tours growing rapidly. Nigel Williams looks at the challenges facing the Galapagos Islands.
openaire   +2 more sources

Anharmonic behavior and structural phase transition in Yb2O3

open access: yesAIP Advances, 2013
The investigation of structural phase transition and anharmonic behavior of Yb2O3 has been carried out by high-pressure and temperature dependent Raman scattering studies respectively.
Sugandha Dogra Pandey   +4 more
doaj   +1 more source

Nested order-disorder framework containing a crystalline matrix with self-filled amorphous-like innards

open access: yesNature Communications, 2022
The synthesis and characterization of new crystalline-amorphous hybrid materials is challenging. Here, the authors report the preparation of a nested order-disorder framework by applying high pressure to a nested copper chalcogenide Cu12Sb4S13.
Kejun Bu   +13 more
doaj   +1 more source

Home - About - Disclaimer - Privacy