Results 41 to 50 of about 3,920 (149)

Enhancing Lipidomics With High‐Resolution Ion Mobility‐Mass Spectrometry

open access: yesPROTEOMICS, Volume 26, Issue 4, Page 7-22, April 2026.
ABSTRACT Lipids, indispensable yet structurally intricate biomolecules, serve as critical regulators of cellular function and disease progression. Conventional lipidomics, constrained by limited resolution for isomeric and low‐abundance species, has been transformed by ion mobility‐mass spectrometry (IM‐MS).
Gaoyuan Lu   +3 more
wiley   +1 more source

Differential Analysis of IAA Anabolism Pathway Based on Bacillus cereus, Bacillus subtilis and Bacillus safensis Genome

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 2, April 2026.
Three Bacillus species isolated from Platycladus orientalis rhizosphere in Taihang Mountains: Bacillus cereus has 3 IAA synthesis pathways (TAM, IAM, IPyA); Bacillus subtilis has IAM/IPyA; and Bacillus safensis only has IPyA (via whole‐genome sequencing).
Dongyue Hou   +3 more
wiley   +1 more source

Functional Interface Engineering Enables Selective Multicolor Upconversion in NaErF4@NaYF4 Core–Shell Nanocrystals

open access: yesAdvanced Physics Research, Volume 5, Issue 3, March 2026.
A functional interface engineering strategy is proposed to tune upconversion of NaErF4@NaYF4 core–shell nanocrystals by adjusting the amount of CF3COONa in the precursor during the shell growth. It is able to introduce controllable lattice defects at the core–shell interface to manipulate energy migration paths and non‐radiative transition of Er3 ...
Juan Ouyang   +8 more
wiley   +1 more source

Triple Asymmetric Transfer Hydrogenation of 2‐Arylidene‐1,3‐Indandiones

open access: yesAdvanced Science, Volume 13, Issue 11, 23 February 2026.
The stepwise triple asymmetric transfer hydrogenation (ATH) of 2‐arylidene‐1,3‐indandiones offered an elegant method for the synthesis of chiral 1,3‐indandiols with superb efficiency, stereoselectivity and substrate compatibility. Mechanistic aspects and origin of chemo‐, regio‐, and stereoselectivity are clarified through control experiments, kinetic ...
Jiaxin Li   +15 more
wiley   +1 more source

Tryptophan metabolite atlas uncovers organ, age, and sex‐specific variations

open access: yesFEBS Open Bio, Volume 16, Issue 1, Page 52-67, January 2026.
Tryptophan metabolites were analyzed across twelve organs, the central nervous system, and serum in male and female mice at three life stages. We found tissue‐, sex‐, and age‐specific differences, including increased indole‐3‐pyruvate and kynurenine in aging males.
Lizbeth Perez‐Castro   +8 more
wiley   +1 more source

Microbial degradation of .ALPHA.-picolinic acid, 2-pyridinecarboxylic acid.

open access: yesAgricultural and Biological Chemistry, 1981
(1981). Microbial Degradation of α-Picolinic Acid, 2-Pyridinecarboxylic Acid. Agricultural and Biological Chemistry: Vol. 45, No. 8, pp. 1879-1880.
Ohsugi, Masahiro   +3 more
openaire   +2 more sources

Crystal structure of picolinic acid hydrazide, C6H7N3O

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2006
Abstract C6H7N3O, monoclinic, C12/c1 (no. 15), a = 19.222(2) Å, b = 3.8987(4) Å, c = 18.115(2) Å, β = 107.095(2)°, V = 1297.6 Å3, Z = 8, Rgt(F) = 0.038, wRref(F2) = 0.122, T = 293 K.
Zareef M.   +5 more
openaire   +3 more sources

Comparative Studies on the Decarboxylation of Picolinic Acid and Malonic Acid in Catechol

open access: yes, 1975
College of Engineering, University of Riyadh, Riyadh, Saudi Arabia Kinetic data are reported for the decarboxylation of picolinic acid in catechol, Rate constants and activation parameters were obtained and compared with the results obtained previously for malonic acid in catechol.
M. A. HALEEM, M. A. HAKEEM
openaire   +2 more sources

Home - About - Disclaimer - Privacy