Results 121 to 130 of about 327,043 (288)

Heteroatom‐Mediated Covalent Organic Framework Membranes With Nitrogen‐Enriched Nanochannels for Efficient Desalination

Advanced Science, EarlyView.
Heteroatom precursor engineering serves as a molecular‐level strategy to tailor hydrazide monomer reactivity and diffusion kinetics, enabling controlled assembly of highly crystalline COF membranes with ultramicroporous channels. The nitrogen‐enriched nanochannels deliver high water/ion selectivity via simultaneous water transport acceleration and ion ...
Guishan Hu, Muning Chen, Yunqiu Zhou, Yu Zhen, Miaomiao Tian, Yatao Zhang, Jingwei Hou, Junyong Zhu, Yong Wang   +8 more
wiley   +1 more source

Thermo-Responsivity of the Polyacrylate-Adsorbed Metal Cation and its Hydration Structure

Adsorption Science & Technology, 2008
The thermo-responsive phase behaviour of the sodium salt of poly(acrylic acid) (PAA) was studied when its counter-ion was exchanged for a series of metal cations (PAA–metal cation complexes).
Yoshimi Seida, Takahiro Imai, Kiyoshi Murata, Yoshio Nakano   +3 more
doaj   +1 more source

Restoration of m6A‐Modified circPSMB1 Suppresses Chordoma Progression and Enables Local Nanotherapeutic Intervention

Advanced Science, EarlyView.
An m6A‐modified circRNA, circPSMB1, is identified as a tumor suppressor in chordoma. METTL3‐dependent m6A promotes circPSMB1 interaction with HNRNPA2B1, limiting c‐MYC expression and malignant progression. An injectable HMnO2‐based nanohydrogel enables local circPSMB1 delivery and tumor microenvironment‐responsive therapy, offering a promising strategy
Yingchuang Tang, Liang Qiu, Xingbang Ruan, Yihan Shi, Ye Wang, Hanwen Li, Kai Zhang, Kangwu Chen   +7 more
wiley   +1 more source

The Sorption of Metals on the Polysulfone Cation Exchange Membranes

, 2001
The sorption of NaCl and CaCl2 and monovalent-divalent cation salt mixtures on the polysulfone and polysulfone with polyester support cation exchange membranes were investigated.
Güğül, İlkay Hilal, Yıldız, Salih, Leylek, Betül, Ersöz, Mustafa, Çimen, Aysel   +4 more
core  

Distinct Cleavage Trajectories Mediated by DNA and RNA Substrate in Argonaute From Methanocaldococcus Fervens

Advanced Science, EarlyView.
This study characterizes MfAgo, an enzyme exhibiting highly efficient DNA‐guided DNA and RNA cleavage capability. Precise RNA cleavage strictly requires dimerization to stabilize the PIWI‐loop region, while its robust DNA cleavage functions in a dimerization‐independent manner.
Fuyong Huang, Taiyu Chen, Meng Fang, Qinmiao Duanmu, Kangle Mu, Yuqi Bi, Siwei Xu, Xin Tao, Jiening Wang, Shan Wu   +9 more
wiley   +1 more source

Probing the Energy Landscape of α‐Synuclein Amyloid Fibril Formation by Systematic K‐to‐Q Mutagenesis

Advanced Science, EarlyView.
We use lysine‐to‐glutamine mutations to study the effect of electrostatics on the kinetics and thermodynamics of alpha‐synuclein amyloid fibril formation. We find that mutational effects map on their structural context within fibrils and identify residues that modulate the energy landscape of alpha‐synuclein self‐assembly. Our work outlines a scalable,
Antonin Kunka, Azad Farzadfard, Jacob Aunstrup Larsen, Rasmus Krogh Norrild, Federica Saraceno, Celia Fricke, Hossein Mohammad‐Beigi, Ahmed Sadek, Jonas Folke, Susana Aznar, Alexander K. Buell   +10 more
wiley   +1 more source

Networked salt-bridges mediate magnesium-dependent conformational dynamics and functional regulation in type IA topoisomerases

Nature Communications
Protein conformational dynamics are fundamental to enzyme function, yet the molecular mechanisms by which these dynamics are regulated remain poorly understood. Here, we reveal that a conserved network of salt-bridges, modulated by magnesium ions, serves
Yeonee Seol, Yuk-Ching Tse-Dinh, Keir C. Neuman   +2 more
doaj   +1 more source

Monovalent and divalent cation effects on phase transitions of iota-carrageenan

, 2007
Phase transitions Of L-carrageenan in a variety of monovalent (Li, Na, K) and divalent (Mg, Ca, Sr) cation solutions were studied during heating and cooling by using photon transmission technique.
Arda, Ertan, Pekcan, Mehmet Önder, Kara, Selim, Pekcan, Onder   +3 more
core   +1 more source

Supramolecular Zinc–Polyphenol Coordination Assemblies Mitigate Colonic Inflammation by Regulating Mucosal Barrier and Microbiome

Advanced Science, EarlyView.
A carrier‐free zinc‐coordinated polyphenol nanoplatform (ZnCA NPs) is designed as an “all‐in‐one” therapeutic strategy for intestinal inflammation. The ZnCA NPs exhibit enhanced colonic accumulation and broad‐spectrum reactive oxygen and nitrogen species scavenging.
Qiwen Xie, Mai Ye, Xuexia Liu, Jing Wang, Ying Chen, Lu Tan, Jinheng Fu, Xiaochang Huang   +7 more
wiley   +1 more source

Defect‐Engineered LiYO2 Interlayers Enabling Fast Interfacial Li+ Transport in All‐Solid‐State Batteries

Advanced Science, EarlyView.
Defect‐engineered LiYO2 interlayers are designed through aliovalent Zn2+ and Zr4+ substitution to regulate Li+ point‐defect chemistry in Ni‐rich cathodes. Compared with Li‐excess‐type LYZnO, Li‐vacancy‐type LYZrO enables faster Li+ transport, suppresses Li6PS5Cl decomposition, lowers interfacial resistance, and mitigates polarization growth, thereby ...
Sodam Kim, Yun Seong Byeon, Jaewoo Jung, Mingyu Cho, Hyunmin Lee, Jung Ho Kim, Min‐Sik Park   +6 more
wiley   +1 more source