Results 151 to 160 of about 836,969 (319)
steel research international, EarlyView.The study evaluates mill scale‐based briquettes, which meet industrial standards for shatter strength and exhibit a low decrepitation index. Despite their limited reducibility in nonisothermal reduction experiments, softening and melting results indicate potential application as a substitute for conventional acidic iron‐bearing materials for use in ...
Ismael Vemdrame Flores +4 more
wiley +1 more source
Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction
steel research international, EarlyView.Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo +8 more
wiley +1 more source
The global Cretaceous-Tertiary fire: Biomass or fossil carbon [PDF]
The global soot layer at the K-T boundary indicates a major fire triggered by meteorite impact. However, it is not clear whether the principal fuel was biomass or fossil carbon.
Gilmour, Iain, Guenther, Frank
core +1 more source
Bioactivity of Baltic amber – fossil resin
Polimery, 2016 Pawel Tumilowicz +5 more
openaire +1 more source
Taphonomy of fossilized resins: determining the biostratinomy of amber
Acta geológica hispánica, 2000 Comparing the maturity of fossilized resins with that of their enclosing bedrock can provide information on the maturity, relative age and biostratinomy of amber and copal. A method to determine this is presented here with examples of amber and copal from the Dominican Republic. Maturity of the bedrock was determined by vitrinite reflection and that of
POINAR, G.O., MASTALERZ, M.
openaire +2 more sources
Hevea brasiliensis seeds: A novel sustainable feedstock for ethanol production
Vietnam Journal of Chemistry, EarlyView.Abstract The rubber tree (Hevea brasiliensis) is cultivated on a large scale mainly for the extraction of latex in Brazil and Southeast Asia, also generating large quantities of seeds. These seeds currently do not have large‐scale applications and may thus be considered as a residue.
Giovano Tochetto +4 more
wiley +1 more source
Lithic analysis in African archaeology: Advances and key themes
Archaeometry, EarlyView.Abstract Stone artifacts (lithics) preserve for extended periods; thus they are key evidence for probing the evolution of human technological behaviors. Africa boasts the oldest record of stone artifacts, spanning 3.3 Ma, rare instances of ethnographic stone tool‐making, and stone tool archives from diverse ecological settings, making it an anchor for ...
Deborah I. Olszewski +2 more
wiley +1 more source
The FEBS Journal, EarlyView.Small protein MtrR is a regulator of the Mtr methyltransferase complex in Methanosarcina mazei. It binds specifically to the MtrA subunit and modulates Mtr activity in response to hydrogen (H2) availability. Deleting mtrR impairs growth in the presence but not absence of H2, indicating its role in directing methyl transfer toward an energy‐conserving ...
Tim Habenicht +6 more
wiley +1 more source
Polyesterase activity and thermostability of carboxylesterases from Thermoleophilum album YS‐3
The FEBS Journal, EarlyView.Three novel α/β‐hydrolases from thermophilic bacterium Thermoleophilum album display carboxylesterase and polyesterase activity. These enzymes hydrolyse PET, PLA and PCL both at high and moderate temperatures. TA21 shows superior activity, efficiently converting MHET to terephthalic acid. Structural features underlying substrate binding highlight their
Tatyana N. Chernikova +6 more
wiley +1 more source
Tree growth response and adaptation to climate change and climate extremes: From canopy to stem
Journal of Integrative Plant Biology, EarlyView.This review synthesizes the responses and adaptations of tree growth, including canopy phenology, intra‐annual wood formation dynamics, and annual stem growth, to climate change and climate extremes. It highlights key knowledge gaps for future research to support sustainable forest management and enhance forest carbon storage under ongoing climate ...
Feiyu Yang +8 more
wiley +1 more source