Results 81 to 90 of about 36,198 (231)

Phytochemical Investigation and Isolation of Chemical Constituents From the Root Extract of Syzygium guineense in South Ethiopia

Analytical Science Advances, Volume 6, Issue 2, December 2025.
ABSTRACT Medicinal plants are a global healthcare cornerstone, with traditional communities, particularly in Ethiopia, relying on indigenous knowledge for treating various ailments. This study aimed to identify, isolate, and elucidate the structures of chemical constituents from the chloroform and methanol extracts of Syzygium guineense root using IR ...
Mekdes Lulu
wiley   +1 more source

Room temperature chiral discrimination in paramagnetic NMR spectroscopy

, 2016
A recently proposed theory of chiral discrimination in NMR spectroscopy based on the detection of a molecular electric polarization $\mathbf{P}$ rotating in a plane perpendicular to the NMR magnetic field [A. D. Buckingham, J. Chem. Phys. $\mathbf{140}$,
Calvello, Simone, Soncini, Alessandro
core   +1 more source

Genetic Evidence of Multiple and Diverse Range Expansion Events From an Outbreak of the Crown‐of‐Thorns Seastar, Acanthaster Cf. Solaris on a Subtropical Reef

Ecology and Evolution, Volume 15, Issue 12, December 2025.
This study examines the population genetics of a Crown of Thorns seastar (Acanthaster cf. solaris) outbreak on a subtropical coral reef. We demonstrate that this population originated from larval connectivity via the East Australian Current from the Great Barrier Reef, with high genomic connectivity indicating substantial risk of future outbreaks as ...
Matt J. Nimbs, Maria Byrne, Steven J. Dalton, David Maguire, Hamish A. Malcolm, Nicole Strehling, Brigitte Sommer, Melinda A. Coleman   +7 more
wiley   +1 more source

(18-Crown-6-[kappa]6O)(pyrazolato-[kappa]2N,N')-potassium(I) [PDF]

, 2009
The asymmetric unit of the title compound, [K(C3H3N2)(C12H24O6)], is composed of a potassium cation bonded to the six O atoms of a crown ether molecule and the two N atoms of a pyrazolate anion.
Bolte, Michael, Kunz, Kerstin, Lerner, Hans-Wolfram   +2 more
core  

3-Fluoro-N-(3-fluorobenzoyl)-N-(2-pyridyl)benzamide [PDF]

, 2009
The title compound, C19H12F2N2O2, a 2:1 product of the reaction of 3-fluorobenzoylchloride and 2-aminopyridine crystallizes with a disordered 3-fluorobenzene ring adopting two conformations [ratio of occupancies 0.959 (4):0.041 (4)].
Donnelly, Katie, Gallagher, John F.
core   +1 more source

Impaired Cellular Immunity and Cross‐Reactive Humoral Responses to Mpox Virus in HIV‐Infected Individuals Vaccinated with Vaccinia Virus Tiantan Strain

MedComm, Volume 6, Issue 12, December 2025.
This study examines MPXV immunity in PLWH, focusing on smallpox vaccine‐induced responses. PLWH with CD4⁺ T‐cell counts <500 cells/mm3 showed reduced VTT‐IgG, MPXV‐IgG, and NAbs, while CD4⁺ T‐cell responses were impaired at counts <350 cells/mm3. CD8⁺ T‐cell responses remained stable.
Qiao Zhang, Rui Song, Yu Huang, Meiyu Fang, Xiaoyou Chen, Danyang Li, Yanan Li, Xueqi Chi, Fengwen Xu, Jingchuan Zhong, Lan Chen, Zhixia Gu, Hongxin Zhao, Yuanyuan Zhang, Ning Han, Elie Antoun, Yanchun Peng, Tao Dong, Li Guo, Fei Guo, Lili Ren, Jianwei Wang, Ronghua Jin   +22 more
wiley   +1 more source

Spectroscopic, X‐Ray Crystallographic, and Hirshfeld Surface Analyses for the Investigation of Intermolecular Interactions in Carboxamide Hydrazone Hybrids

ChemistryOpen, Volume 14, Issue 12, December 2025.
Two novel carboxamide hydrazone hybrids are synthesized and characterized. Structural, spectroscopic, and computational analyses reveal dominant hydrogen bonding, π–π stacking, and reactive sites. Compound 2b exhibits potent antibacterial activity against Staphylococcus aureus, highlighting its potential as a cost‐effective therapeutic agent.
Nabila A. Kheder, Mostafa E. Salem, Saied M. Soliman, Ismail A. Elhaty, Naglaa S. Mahmoud, Mohamed Abdel‐Megid, Kamal M. Dawood   +6 more
wiley   +1 more source

Bis(9-amino-acridinium) bis-(pyridine-2,6-dicarboxyl-ato-κO,N,O)nickelate(II) trihydrate. [PDF]

, 2010
The title compound, (C(13)H(11)N(2))(2)[Ni(C(7)H(3)NO(4))(2)]·3H(2)O, consists of a mononuclear anionic complex, two 9-amino-acridinium cations and three uncoordinated water mol-ecules.
Derikvand, Zohreh, Olmstead, Marilyn M
core   +2 more sources

A molecular cytogenetic perspective on chromosome biology and crop improvement

The Plant Genome, Volume 18, Issue 4, December 2025.
Abstract The age of molecular cytogenetic analysis of crop plants dawned in the late 1960s and early 1970s with new advances in the identification of somatic chromosomes by C‐banding and fluorescence in situ hybridization concurrent with advances in DNA cloning, sequencing, and mapping. In this perspective article dedicated to Ronald Phillips, I review
Bikram S. Gill
wiley   +1 more source

Structural insights into transition‐metal–aminodiphosphine (PNP) complexes bearing [MCln(PNP)2] (M = Co, Ru, Cr or Mo; n = 1 or 2) cores in the solid state

Acta Crystallographica Section C, Volume 81, Issue 12, Page 694-701, December 2025.
The molecular structures of two novel cobalt aminodiphosphine (PNP) complexes are reported, featuring variation in the N‐atom substituent. A Cambridge Structural Database (CSD) survey, along with a noncovalent interaction (NCI) analysis of the analogous [TMCln(PNP)2] (where TM = transition metal and n = 1 or 2) core, revealed an inverse correlation ...
Sizwe J. Zamisa, Adesola A. Adeleke, Dunesha Naicker, Holger B. Friedrich, Bernard Omondi   +4 more
wiley   +1 more source