Results 21 to 30 of about 14,146,948 (154)

Systematic errors of THz absorption gas spectroscopy due to interference in a multi-pass cell

open access: yesJournal of Physics: Conference Series, 2022
Multi-pass spectroscopic absorption cells are commonly used in gas spectroscopy to increase the sensitivity of the measurements. The possibility of systematic errors of such measurements was shown in this paper, even for the case when intrinsic ...
A. Semenova   +3 more
semanticscholar   +1 more source

Simulation of the impact of the cell interference on the THz gas absorption spectrum meashured by nonstationar spectroscopy methods

open access: yesJournal of Radio Electronics, 2022
Cell is the important part of the terahertz (THz) spectrometer designed to study the chemical composition of multicomponent gas mixtures, since it is used for supporting the optimal pressure of the gaseous sample.
A. Semenova   +3 more
semanticscholar   +1 more source

Color pattern complexity in dwarf minke whales (Balaenoptera acutorostrata) of the northern Great Barrier Reef of Australia

open access: yesMarine Mammal Science, Volume 39, Issue 3, Page 780-793, July 2023., 2023
Abstract Complex color patterning is a characteristic feature of dwarf minke whales (DMWs; Balaenoptera acutorostrata) which has been used to photographically identify (photo‐ID) individuals and to research an aggregation on Australia's Great Barrier Reef (GBR).
Marissa J. Hutchings   +4 more
wiley   +1 more source

Evaluation of physiological stress in free‐ranging bears: current knowledge and future directions

open access: yesBiological Reviews, Volume 98, Issue 1, Page 168-190, February 2023., 2023
ABSTRACT Stress responses, which are mediated by the neurogenic system (NS) and hypothalamic–pituitary–adrenal (HPA) axis help vertebrates maintain physiological homeostasis. Fight‐or‐flight responses are activated by the NS, which releases norepinephrine/noradrenaline and epinephrine/adrenaline in response to immediate stressors, whilst the HPA axis ...
Natarsha L. Babic   +5 more
wiley   +1 more source

Ionizing radiation and melanism in Chornobyl tree frogs

open access: yesEvolutionary Applications, Volume 15, Issue 9, Page 1469-1479, September 2022., 2022
Abstract Human actions are altering ecosystems worldwide. Among human‐released pollutants, ionizing radiation arises as a rare but potentially devastating threat to natural systems. The Chornobyl accident (1986) represents the largest release of radioactive material to the environment. Our aim was to examine how exposure to radiation from the Chornobyl
Pablo Burraco, Germán Orizaola
wiley   +1 more source

Diversity of vibrissal follicle anatomy in cetaceans

open access: yesThe Anatomical Record, Volume 305, Issue 3, Page 609-621, March 2022., 2022
Abstract Most cetaceans are born with vibrissae but they can be lost or reduced in adulthood, especially in odontocetes. Despite this, some species of odontocetes have been found to have functioning vibrissal follicles (including the follicle itself and any remaining vibrissal hair shaft) that play a role in mechanoreception, proprioception and ...
Natasha Mynett   +3 more
wiley   +1 more source

What can whiskers tell us about mammalian evolution, behaviour, and ecology?

open access: yesMammal Review, Volume 52, Issue 1, Page 148-163, January 2022., 2022
The majority of whisker research has been focused on rodents, marsupials, and pinnipeds, and we use these studies to infer patterns in many mammalian species. There are similarities in whisker form across mammals; for example, whiskers are all touch‐sensitive, slender, curved tapered hairs, with a common muscle architecture.
Robyn A. Grant, Victor G. A. Goss
wiley   +1 more source

A hybrid residual neural network–Monte Carlo approach to invert surface wave dispersion data

open access: yesNear Surface Geophysics, Volume 19, Issue 4, Page 397-414, August 2021., 2021
ABSTRACT Surface‐wave inversion is a non‐linear and ill‐conditioned problem usually solved through deterministic or global optimization approaches. Here, we present an alternative method based on machine learning. Under the assumption of a local one‐dimensional model, we train a residual neural network to predict the non‐linear mapping between the full
Mattia Aleardi, Eusebio Stucchi
wiley   +1 more source

EPR Methods for Biological Cu(II): L-Band CW and NARS [PDF]

open access: yes, 2015
: Copper has many roles in biology that involve the change of coordination sphere and/or oxidation state of the copper ion. Consequently, the study of copper in heterogeneous environments is an important area in biophysics. EPR is a primary technique for
Bennett, Brian, Kowalski, Jason M.
core   +2 more sources

EVALUATION OF STRESSED-DEFORMED CONDITIONS OF ELEMENTS TRAVERSE WITH LOAD CAPACITY OF 160 TONS

open access: yes, 2020
The article calculates the analysis of the stress-strain state of the traverse, taking into account additional loads acting in full-scale operating conditions.
A. Yablokov   +3 more
semanticscholar   +1 more source

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