Results 121 to 130 of about 36,715 (258)

Trends in Miscarriages and Stillbirths in Panama From 2002 to 2024. [PDF]

open access: yesObstet Gynecol Int
Chavez-Rodriguez Y   +3 more
europepmc   +1 more source

Interfacial Electron‐Modulated Pt Sites on Self‐Supported NiCoP Nanosheets for Enhancing Hydrogen Evolution Reaction

open access: yesCarbon Energy, EarlyView.
Using a hierarchical multilevel‐structure strategy, we design and prepare a self‐supported Pt/NiCoP/CF catalyst with a strong electron transfer effect between Pt and NiCoP. This catalyst realizes highly efficient HER performance under full pH range, outperforming commercial Pt/C catalyst.
Caiyuan Zhu   +11 more
wiley   +1 more source

Fe Atoms Accelerator Coupled With Oxygen Vacancies Channel Synergistically Boost OER Performance of Fe‐CoMoO4‐Ov Nanosheets

open access: yesCarbon Energy, EarlyView.
Fe‐CoMoO4‐Ov/NF demonstrates significantly improved OER catalytic performance compared to CoMoO4. Specifically, the introduced Fe atoms act as a promoter for surface reconstruction, significantly reducing the energy required for surface reconstruction to generate FeCoOOH. The oxygen vacancies serve as electron channels between the core Fe‐CoMoO4‐Ov and
Chaojie Lyu   +4 more
wiley   +1 more source

Proteomic characterization of <i>Tityus championi</i> venom and recombinant expression of its major neurotoxin. [PDF]

open access: yesJ Venom Anim Toxins Incl Trop Dis
Muñoz-Agames MDC   +8 more
europepmc   +1 more source

Regioselective Aldol Reactions Directed by Charge and Orbital Effects in Cyclic Germyl Dienolates: Synthesis of Three Distinct Regio‐ and Stereoisomers

open access: yesChemistry – A European Journal, EarlyView.
Charge and orbital control represent fundamental principles in organic chemistry. In this study, these principles are applied to the aldol reactions of a cyclic Ge‐dienolate. By systematically tuning the charge and orbital distributions of the Ge‐dienolates and their aldehyde reaction partners, regio‐ and stereoselective access to three distinct aldol ...
Taishi Nojima   +2 more
wiley   +1 more source

N‐Sulfonyl Azalevoglucosan: A Versatile Platform for the Synthesis of Polysubstituted Piperidines

open access: yesChemistry – A European Journal, EarlyView.
Gain by strain: The synthesis of a levoglucosan analog, in which the pyranose oxygen has been replaced by a nitrogen, allows navigation on the piperidine ring to iteratively install functional groups at C1, C2, C3, C4, and C6 positions using simple experimental protocols with minimal protecting group manipulation.
Dylan Yorga   +6 more
wiley   +1 more source

Health Status Assessment of Panamanian Pacific Coastal Areas Using Multi-Level Biomarkers in the Mangrove Cockle <i>Anadara tuberculosa</i>. [PDF]

open access: yesToxics
Alvarado-González NE   +9 more
europepmc   +1 more source

GH172 Difructose Dianhydride I Synthase: A Two‐Stepped Journey via Glycosylation and Cyclization Using QM/MM Metadynamics

open access: yesChemistry – A European Journal, EarlyView.
Unlocking the chemistry of caramel by simulations and experimental validation. αFFase1${\alpha }\rm{FFase1}$ converts inulobiose into difructose dianhydride I, one component of caramel, through two steps: a rate‐limiting glycosylation (with a rare sugar ring flip) followed by a cyclization step, guided by residues E85, K147, and N226.
Santiago Alonso‐Gil   +7 more
wiley   +1 more source

Iso‐Tellurazole N‐Oxides Assemble Adaptively Folded Macrocyclic Dodecamers

open access: yesChemistry – A European Journal, EarlyView.
Te…O Chalcogen bonding links twelve molecules into a ring that wraps itself around molecular guests. ABSTRACT Self‐assembled macrocyclic dodecamers were found in the crystals of new pseudo‐polymorphs of iso‐tellurazole N‐oxides. These structures are formed by molecules connected by NTe…O chalcogen bonds and are folded in a pattern that defines 89–153 ...
Jin Z. Wang   +4 more
wiley   +1 more source

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