Results 61 to 70 of about 286,385 (277)

Recent Advancements in the Utilization of s-Block Organometallic Reagents in Organic Synthesis with Sustainable Solvents

open access: yesMolecules
This mini-review offers a comprehensive overview of the advancements made over the last three years in utilizing highly polar s-block organometallic reagents (specifically, RLi, RNa and RMgX compounds) in organic synthesis run under bench-type reaction ...
María Jesús Rodríguez-Álvarez   +6 more
doaj   +1 more source

Low-gravity penetrometry of asteroids and comets [PDF]

open access: yes, 2006
Extract from introduction: There are a number of contexts in which space hardware may interact mechanically with the solid material present in a low-gravity environment at the surface of an asteroid or comet, possibly penetrating to some depth and ...
Ball, Andrew J.
core  

Identifying transcription factors controlling the basal expression of human MRP4 highlights a substantial role for Sp1

open access: yesFEBS Open Bio, EarlyView.
The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer   +7 more
wiley   +1 more source

Impact of transition to a subterranean lifestyle on morphological disparity and integration in talpid moles (Mammalia, Talpidae)

open access: yesBMC Evolutionary Biology, 2019
Background Understanding the mechanisms promoting or constraining morphological diversification within clades is a central topic in evolutionary biology.
Gabriele Sansalone   +5 more
doaj   +1 more source

Pharmacological inhibition of the PERK pathway modulates hepatocellular carcinoma growth and immune signaling

open access: yesFEBS Open Bio, EarlyView.
Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero   +5 more
wiley   +1 more source

Sarcoma Epitelióide: análise de 15 casos tratados no INCA

open access: yesRevista Brasileira de Cancerologia, 2004
Objetivo: Descrever os aspectos epidemiológicos, clínicos, anatomopatológicos e o tratamento dos pacientes com sarcoma epitelióide matriculados no Instituto Nacional de Câncer, comparando-os com os resultados da literatura. Pacientes e Método: Revisão do
Luiz Fernando Nunes   +5 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

open access: yesFEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata   +13 more
wiley   +1 more source

Control of moles [PDF]

open access: yes, 1942
Caption title.Digitized 2006 AES ...
Haseman, Leonard, 1884-1969
core  

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Regenerative Cu/La zeolite supported desulfurizing sorbents [PDF]

open access: yes, 1991
Efficient, regenerable sorbents for removal of H2S from fluid hydrocarbons such as diesel fuel at moderate condition comprise a porous, high surface area aluminosilicate support, suitably a synthetic zeolite, and most preferably a zeolite having a free ...
Sharma, Pramod K., Voecks, Gerald E.
core   +1 more source

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