Results 41 to 50 of about 373,953 (291)

Probabilistic assessment of the permeability of the deposits of the upper part of the Tyumen suite of the Shaim oil and gas region

open access: yesRUDN Journal of Engineering Research, 2022
The work is devoted to the problem of increasing the reliability of the calculation of the permeability cube in the construction of a threedimensional geological model.
Pavel N. Strakhov   +1 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

Modelling Spectral Unmixing of Geological Mixtures: An Experimental Study Using Rock Samples

open access: yesRemote Sensing, 2023
Spectral unmixing of geological mixtures, such as rocks, is a challenging inversion problem because of nonlinear interactions of light with the intimately mixed minerals at a microscopic scale. The fine-scale mixing of minerals in rocks limits the sensor’
Maitreya Mohan Sahoo   +4 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Mary Anning Rocks and its Outreach Impacts

open access: yesGeoconservation Research
The Mary Anning Rocks charity started as a campaign to raise a statue for the noted early paleontologist and fossil collector Mary Anning in her hometown, Lyme Regis. Now, after the statue was raised, the campaign is still a vibrant and engaging example
Anya Pearson
doaj   +1 more source

Experimental Studies of the Effect of Design and Technological Solutions on the Intensification of an Underground Coal Gasification Process

open access: yesEnergies, 2021
This paper represents the results of experimental studies of physical modeling of the underground coal gasification process in terms of implementation of design and technological solutions aimed at intensification of a gasification process of thin coal ...
Oleg Bazaluk   +5 more
doaj   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

open access: yesMolecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary   +1 more
wiley   +1 more source

Innovation and Development for Atomic Fluorescence Spectrometry Analysis

open access: yesYankuang ceshi, 2013
Atomic fluorescence spectrometry (AFS) has such characteristics of chemical vapor separation and non dispersive optical system. It is one of the most successful analytical methods available to determine trace As, Sb, Bi, Hg, Se, Te and Ge elements ...
LI Gang, HU Si-xian, CHEN Lin-ling
doaj  

Synaptic plasticity in fronto-insular circuits underlying stress susceptibility and resilience

open access: yesNeuroscience Research
Chronic stress may trigger depressive episodes in vulnerable individuals but the underlying mechanisms remain incompletely understood. Converging lines of evidence indicate that these mechanisms may converge on the dysregulation of synaptic transmission ...
Devin Rocks, Conor Liston
doaj   +1 more source

Mineralogical and Chemical Investigations of the Amguid Crater (Algeria): Is there Evidence on an Impact Origin?

open access: yesGeosciences, 2020
Mineralogical and chemical investigations were carried out on intra-craterial bedrocks (Lower Devonian sandstone) and regolithic residual soil deposits present around the Amguid structure, to discuss the hypothesis of its formation through a relatively ...
Gian Paolo Sighinolfi   +3 more
doaj   +1 more source

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