Results 131 to 140 of about 164,599 (316)

Infancy, childhood, and puberty on the Silk Road revealed with isotopic analysis of incremental dentine [PDF]

open access: gold, 2022
Tingting Wang   +6 more
openalex   +1 more source

Burn‐Safe Biodegradable Magnetocaloric Composites for Temperature‐Controlled Biomedical Applications

open access: yesAdvanced Science, EarlyView.
This work investigates a magnetocaloric (Mn,Fe)2(P,Si) compound tailored for precise, self‐regulating heating in biomedical use. With a Curie temperature tuned at 43 °C, it enables therapeutic activation without overheating. Encapsulation in a composite ensures controlled temperature rise under an alternating magnetic field (AMF), with high ...
Pornpawee Uliss   +8 more
wiley   +1 more source

Compound-specific isotope analysis

open access: yes, 2007
The isotopic composition, for example, 14C/12C, 13C/12C, 2H/1H, 15N/14N and 18O/16O, of the elements of matter is heterogeneous. It is ruled by physical, chemical and biological mechanisms. Isotopes can be employed to follow the fate of mineral and organic compounds during biogeochemical transformations. The determination of the isotopic composition of
openaire   +2 more sources

Balanced Expression of the Diiron Oxygenase BioE Is Essential for Biotin Homeostasis in Elizabethkingia meningoseptica

open access: yesAdvanced Science, EarlyView.
BioE is a new diiron oxygenase that catalyzes the conversion of long‐chain acyl groups into pimeloyl thioester, initiating biotin synthesis. The overexpression of EmBioE disrupts lipid metabolic homeostasis, requiring repressor BioL to maintain a balance between long‐chain fatty acids and biotin synthesis.
Meng Zhang   +9 more
wiley   +1 more source

Evaluation and Optimization of Carbon and Oxygen Isotopes Experimental Conditions Determinated by GasBenchⅡ-IRMS Method

open access: yesYankuang ceshi, 2014
The continuous flow technique coupled with GasBenchⅡ-Isotope Ratio Mass Spectrometry (IRMS) became the routine method to analyse the stable carbon and oxygen isotope compositions of carbonate.
ZHU Yuan-yuan   +5 more
doaj  

Estimation of tributary–mainstem migration of freshwater fishes by Sr isotope analysis of otoliths [PDF]

open access: bronze
Tamihisa Ohta   +4 more
openalex   +1 more source

Long‐Term Active Rather than Passive Restoration Promotes Soil Organic Carbon Accumulation by Alleviating Microbial Nitrogen Limitation in an Extremely Degraded Alpine Grassland

open access: yesAdvanced Science, EarlyView.
Active restoration increases soil organic carbon stocks by reducing microbial nitrogen limitation. Nitrogen availability promotes particulate to mineral‐associated organic carbon conversion by reducing microbial carbon use efficiency. Passive restoration has no effect on soil organic carbon stocks.
Jinchao Gong   +15 more
wiley   +1 more source

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