Results 31 to 40 of about 195,872 (296)

Hydrochemical Prospecting and Its Application in Green Investigation for the Large Mineral Resource Base: A Case Study from Jiulong Area in Western Sichuan Province

open access: yesYankuang ceshi, 2021
BACKGROUND The 'Strategic Emerging Industry Mineral Investigation' project actively advocates the application of new theories and methods of green investigation in the exploration and development of large-scale resource bases.
YU Yang   +7 more
doaj   +1 more source

The dynamic evolution of compaction bands in highly porous carbonates: the role of local heterogeneity for nucleation and propagation

open access: yesProgress in Earth and Planetary Science, 2020
The formation of compaction bands in porous brittle rocks such as sandstones and carbonates has a significant impact on the localization mechanisms preceding earth and planetary surface instabilities such as earthquakes, landslides, and plate boundary ...
Xiao Chen   +4 more
doaj   +1 more source

A tunnel coaxial 3D hyperspectral scanning system for underground mine investigation

open access: yesScientific Reports, 2023
A hyperspectral scanning system was developed for three-dimensional (3D) surface mapping in underground spaces, such as mine shafts and tunnels. A hyperspectral line-scanning camera was mounted on the rotating driver unit coaxial with the tunnel to image
Hyunseob Baik   +2 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Discovery of stromatolite formation in post-impact hydrothermal lacustrine environments and its implications for early Earth

open access: yesCommunications Earth & Environment
Understanding asteroid-collision-generated extreme environments, including hydrothermal activity, is crucial for gaining insights into biological evolution on the early Earth.
Jaesoo Lim   +14 more
doaj   +1 more source

Frailty Predicts Incident Osteoporotic Fractures in Veterans with Rheumatoid Arthritis

open access: yesArthritis Care &Research, EarlyView.
Objective Rheumatoid arthritis (RA) is associated with an increased risk of frailty and osteoporosis, but the relationship between frailty and incident osteoporotic fractures in RA is underexplored. Methods Data were from the Veterans Affairs (VA) Rheumatoid Arthritis Registry. Frailty was measured using the VA Frailty Index (VAFI).
Katherine D. Wysham   +14 more
wiley   +1 more source

Incorporation of Selenium into Sol–Gel‐Derived Bioactive Glass: Influence on Glass Structure, Bioactivity, and its Selective Cytotoxicity

open access: yesAdvanced Engineering Materials, EarlyView.
Selenium was incorporated into a sol–gel‐derived bioactive glass to enable sustained therapeutic ion release. The selenium‐containing glass preserved bioactivity while selectively inducing cytotoxicity in osteosarcoma cells and maintaining osteoblastic viability.
Breno Rocha Barrioni   +7 more
wiley   +1 more source

Is It Real Type‐II or S‐Scheme? A Three‐Phase Diagnostic Protocol for Identifying Potentially Mislabeled Heterojunction Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Diagnostic analysis via the heterojunction validation funnel. The funnel illustrates the hierarchical stratification of 30 reported Type‐II systems based on the three‐phase, seven‐step diagnostic framework. Complete validation through all phases is achieved by only 3.3% of systems, while 96.7% lack full mechanistic validation, revealing a pervasive ...
Ki‐Hyun Kim
wiley   +1 more source

Pykrete is the frozen composite material of the World War II

open access: yesЛëд и снег, 2016
During the war, government of the allies considered the construction of ice structures converted from artificial icebergs into aircraft carriers. The idea to use ice for construction of floating aerodromes, or giant aircraft carriers, was launched by ...
O. V. Kovalev, M. N. Andreev, V. V. Rice
doaj   +1 more source

Decellularized Extracellular Matrix (dECM) in Tendon Regeneration: A Comprehensive Review

open access: yesAdvanced Healthcare Materials, EarlyView.
Decellularized Extracellular Matrix (dECM) offers a promising solution by replicating the native tendon microenvironment and promoting regeneration. This review highlights advances in the decellularization methods, as well as their integration with emerging technologies and translational progress in tendon tissue engineering.
Kumaresan Sakthiabirami   +4 more
wiley   +1 more source

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