Results 21 to 30 of about 1,292,395 (359)

The relevance of rock shape over mass—implications for rockfall hazard assessments

open access: yesNature Communications, 2021
The awareness of rock shape dependence in rockfall hazard assessment is growing, but experimental and field studies are scarce. This study presents a large data set of induced single block rockfall events quantifying the influence of rock shape and mass ...
Andrin Caviezel   +23 more
doaj   +1 more source

Interannual climate variability improves niche estimates for ectothermic but not endothermic species

open access: yesScientific Reports, 2023
Climate is an important limiting factor of species’ niches and it is therefore regularly included in ecological applications such as species distribution models (SDMs).
Dirk Nikolaus Karger   +6 more
doaj   +1 more source

Concentrations and snow-atmosphere fluxes of reactive nitrogen at Summit, Greenland [PDF]

open access: yes, 1999
Concentrations and fluxes of NOy (total reactive nitrogen), ozone concentrations and fluxes of sensible heat, water vapor, and momentum were measured from May 1 to July 20, 1995 at Summit, Greenland. Median NOy concentrations declined from 947 ppt in May
Colman, A S   +4 more
core   +2 more sources

Multiscale assimilation of Advanced Microwave Scanning Radiometer-EOS snow water equivalent and Moderate Resolution Imaging Spectroradiometer snow cover fraction observations in northern Colorado [PDF]

open access: yes, 2012
Eight years (2002–2010) of Advanced Microwave Scanning Radiometer–EOS (AMSR-E) snow water equivalent (SWE) retrievals and Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover fraction (SCF) observations are assimilated separately or jointly ...
Arsenault, Kristi R   +6 more
core   +2 more sources

Reconstruction of four-dimensional rockfall trajectories using remote sensing and rock-based accelerometers and gyroscopes [PDF]

open access: yesEarth Surface Dynamics, 2019
This work focuses on the in-depth reconstruction of the full set of parameters of interest in single-block rockfall trajectories. A comprehensive understanding of rockfall trajectories holds the promise to enhance the application of numerical models for ...
A. Caviezel   +9 more
doaj   +1 more source

Estimating snow cover from publicly available images [PDF]

open access: yes, 2015
In this paper we study the problem of estimating snow cover in mountainous regions, that is, the spatial extent of the earth surface covered by snow. We argue that publicly available visual content, in the form of user generated photographs and image ...
Camerada, Alessandro   +3 more
core   +2 more sources

From research to national expansion: 20 years' experience of community-based management of childhood pneumonia in Nepal

open access: yesBulletin of the World Health Organization
PROBLEM: Pneumonia is a leading cause of mortality of children aged under five in Nepal. Research conducted by John Snow Inc. in the 1980s determined that pneumonia case management by community-based workers decreased under-five mortality by 28 ...
P Dawson   +5 more
doaj   +1 more source

Micro-mechanical insights into the dynamics of crack propagation in snow fracture experiments

open access: yesScientific Reports, 2021
Dry-snow slab avalanches result from crack propagation in a highly porous weak layer buried within a stratified and metastable snowpack. While our understanding of slab avalanche mechanisms improved with recent experimental and numerical advances ...
Grégoire Bobillier   +5 more
doaj   +1 more source

The RHOSSA campaign: multi-resolution monitoring of the seasonal evolution of the structure and mechanical stability of an alpine snowpack [PDF]

open access: yesThe Cryosphere, 2020
The necessity of characterizing snow through objective, physically motivated parameters has led to new model formulations and new measurement techniques.
N. Calonne   +9 more
doaj   +1 more source

Strengthening person-centered care through quality improvement: a mixed-methods study examining implementation of the Person-Centered Care Assessment Tool in Zambian health facilities

open access: yesHIV Research & Clinical Practice
Introduction Person-centered care (PCC) is considered a fundamental approach to address clients’ needs. There is a dearth of data on specific actions that HIV treatment providers identify as priorities to strengthen PCC.
Amy Casella   +7 more
doaj   +1 more source

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