Results 141 to 150 of about 637,561 (309)

High altitude radiation measurements Quarterly report, 1 Jul. - 30 Sep. 1969 [PDF]

open access: yes
High altitude balloon flight interferometer data, high resolution spectra of Co2, and earth atmosphere carbon dioxide distribution ...
Bartman, F. L.
core   +1 more source

Host, vector, and parasite dynamics: exploring intrinsic and extrinsic factors shaping tick‐borne filarial nematode transmission

open access: yesBiological Reviews, EarlyView.
ABSTRACT Tick‐borne filarial nematodes are a complex and understudied group of parasites that rely on ticks for transmission in vertebrates. This review examines how intrinsic and extrinsic factors may influence the successful transmission of filarial nematodes in tick vectors, drawing insights from extensively studied haematophagous dipteran vector ...
Oluwaseun D. Ajileye   +4 more
wiley   +1 more source

Elevated Hemoglobin Levels and Risk of ST‐Segment Elevation Myocardial Infarction in High‐Altitude Acute Coronary Syndrome: A Retrospective Analysis

open access: yesCatheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background High‐altitude populations typically exhibit elevated hemoglobin (Hb) levels due to chronic hypoxic exposure; however, the impact of this elevation on the risk of ST‐segment elevation myocardial infarction (STEMI) remains unclear. Existing evidence is primarily derived from low‐altitude populations and cannot be directly extrapolated
Jing Li   +10 more
wiley   +1 more source

Mid‐Infrared Spectroscopy and Machine Learning for Chlorogenic Acid Quantification in Coffee

open access: yesChemie Ingenieur Technik, EarlyView.
Chlorogenic acid (CGA) concentration in coffee was predicted using mid‐infrared (MIR) spectroscopy and a machine learning approach. Forty‐four roasting stages (140–220 °C) plus a green coffee control were analyzed. A multilayer perceptron regressor, trained on preprocessed MIR data, outperformed traditional peak analysis, enabling accurate and ...
Deborah Herdt   +6 more
wiley   +1 more source

Project ARES 2: High-altitude battery-powered aircraft [PDF]

open access: yes
A high-altitude, battery-powered, propeller-driven aircraft was designed and is being built by undergraduate students at California State University, Northridge.

core   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

open access: yesDeep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang   +4 more
wiley   +1 more source

CONDOR: Long endurance high altitude vehicle, volume 5 [PDF]

open access: yes
The results of a design study resulting in the proposed CONDOR aircraft are presented. The basic requirements are for the aircraft to maintain continuous altitude at or above 45,000 feet for at least a 3-day mission, be able to comfortably support a two ...
Andrews, L. Cullen   +6 more
core   +1 more source

Patterns of understorey bird diversity across Amazonian forests: survey effort and range maps predict local species richness

open access: yesEcography, EarlyView.
Species diversity typically increases from higher to lower latitudes, but the regional‐scale variation along this geographic gradient remains unclear. It has been suggested that species diversity throughout Amazonia generally increases westward toward the Andes, but this pattern and its environmental determinants require further investigation for most ...
Pilar L. Maia‐ Braga   +14 more
wiley   +1 more source

The use of high altitude, color and spectrozonal imagery for the inventory of wildland resources. Volume II - The range resource Annual progress report [PDF]

open access: yes
High altitude multispectral imagery for identifying and mapping rangeland ...
Carneggie, D. M.   +2 more
core   +1 more source

Hawaii High Altitude Study: High Altitude Sleeping System [PDF]

open access: yesWilderness & Environmental Medicine, 2004
Aaron M, Shupp, Rustem Igor, Gamow
openaire   +2 more sources

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