Results 71 to 80 of about 5,084,494 (418)

Semi-Automated Segmentation of Geoscientific Data Using Superpixels [PDF]

open access: yesarXiv, 2023
Geological processes determine the distribution of resources such as critical minerals, water, and geothermal energy. However, direct observation of geology is often prevented by surface cover such as overburden or vegetation. In such cases, remote and in-situ surveys are frequently conducted to collect physical measurements of the earth indicative of ...
arxiv  

Kenedy County, Texas : records of wells, driller's logs, water analyses, and map showing location of wells [PDF]

open access: yes, 1940
Map of Kenedy County, Texas, showing location of water wells.
Geological Survey (U.S.)
core   +1 more source

Halogen Bonding‐Enabled Stabilization of Copper(I) Cluster Scintillators in Aqueous Environments

open access: yesAdvanced Optical Materials, EarlyView.
A new class of halogen bonding‐strengthened copper(I) cluster‐based X‐ray scintillators is developed, with higher lattice symmetry, reduced trap density, and enhanced stability in polar chemical environments surpassing the performance of halogen‐free counterparts and other conventional scintillators. Abstract Scintillators are essential in applications,
Chang Gu   +3 more
wiley   +1 more source

Geolectric field measurement, modelling and validation during geomagnetic storms in the UK

open access: yesJournal of Space Weather and Space Climate, 2021
Significant geoelectric fields are produced by the interaction of rapidly varying magnetic fields with the conductive Earth, particularly during intense geomagnetic activity.
Beggan Ciarán D.   +4 more
doaj   +1 more source

The landscape and mineral resources of Illinois [PDF]

open access: yes, 1986
Ope
Illinois State Geological Survey
core  

Efficient and Specific PDGFRβ‐Targeting Dual‐Mode T1‐T2 MRI Nanoprobe for Early Diagnosis of Non‐Alcoholic Fatty Liver

open access: yesAdvanced Science, EarlyView.
The Fe3O4/Gd@BSA‐pPB nanoprobe leverages biomimetic mineralization and targets hepatic stellate cells (HSCs) through PDGFRβ, offering superior enrichment in fibrotic regions. This targeted delivery overcomes biological barriers, enhancing both the accuracy and sensitivity of MRI imaging at early disease stages.
Zehua Li   +11 more
wiley   +1 more source

Determination of Rare Earth Elements in Ultra-fine Rock and Soil Samples by ICP-MS Using Microwave Digestion

open access: yesYankuang ceshi, 2020
BACKGROUND The sampling weight can be as low as milligram level when the contents of rare earth elements in rock and soil samples are determined by inductively coupled plasma-mass spectrometry (ICP-MS).
WANG Na   +5 more
doaj   +1 more source

The U.S. Geological Survey’s nonindigenous aquatic species database: over thirty years of tracking introduced aquatic species in the United States (and counting)

open access: yes, 2015
The U.S. Geological Survey’s Nonindigenous Aquatic Species (NAS) Database has tracked introductions of freshwater aquatic organisms in the United States for the past four decades.
P. Fuller, Matthew E. Neilson
semanticscholar   +1 more source

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