Results 81 to 90 of about 11,831 (256)

Modulation of Epigenetic Control by Advanced Molecular Tweezers

Chemistry – A European Journal, EarlyView.
Tailored dimeric molecular tweezers recognize the DNA‐binding part of Histone H4 and interrupt the essential histone‐DNA interaction. ABSTRACT This work addresses the question if supramolecular systems can be tailored to interfere with posttranslational modifications (PTM) and epigenetics.
My‐Hue‐Le, Bianca Kamba, Anja Matena, Christine Beuck, Victoria Momand, Spiros Salvanos, Jessica Vossen, Mike Blueggel, Thomas Schrader, Peter Bayer   +9 more
wiley   +1 more source

Endophyte Inoculation and Elevated Potassium Supply on Productivity, Growth and Physiological Parameters of Spring Barley (Hordeum vulgare L.) Genotypes over Contrasting Seasons

Plants
In recent years, recurrent droughts have significantly affected spring barley production, reducing the quantity and quality of grain. This study aims to identify genotype-specific traits and the drought resilience of six different Hordeum vulgare L ...
Dominik Bleša, Pavel Matušinský, Milan Baláž, Zdeněk Nesvadba, Marta Zavřelová   +4 more
doaj   +1 more source

Synthesis and Photophysical Properties of Star‐Shaped Triphenylamine Trimers Functionalized With BODIPY and Subphthalocyanine Chromophores

Chemistry – A European Journal, EarlyView.
This study investigates how molecular topology influences the photophysical properties of star‐shaped, threefold‐symmetric triphenylamine (TPA) derivatives functionalized with three BODIPY or SubPc units. Their absorption spectra exhibit minimal solvatochromism, whereas their fluorescence intensity is strongly dependent on solvent polarity.
Habiba Boughanmi, Paula de la Rubia, Jamel‐Eddine Khiari, Tomás Torres, José García‐Calvo   +4 more
wiley   +1 more source

Carbonate- and silicate-metasomatized mantle beneath Himalayan-Tibetan orogenic belt

Communications Earth & Environment
The extreme geochemical enrichment of post-collisional potassium-rich lava in the Alpine-Himalayan orogenic belt has led researchers to hypothesize that enrichment is inherited from a metasomatized mantle source potentially incorporating crustal ...
Weikai Li, Zhiming Yang, Zoltán Zajacz, Limin Zhou, Zengqian Hou   +4 more
doaj   +1 more source

A Single‐Aliquot Strategy for Simultaneous Carbon Isotope Confirmation of 6‐Oxo‐Androstenedione and Testosterone Misuse in Doping Control

Drug Testing and Analysis, EarlyView.
This method enables simultaneous carbon isotope confirmation of 6‐oxo‐androstenedione and testosterone markers from a single urine aliquot, using bench‐top extraction, two preparative HPLC steps with intermediate acetylation, and GC/C/IRMS analysis. It was fully validated according to WADA requirements, and real samples demonstrated its fitness for ...
Fábio Azamor de Oliveira, Cristiane Abrantes da Silva, Carolina dos Reis Farias, Mariana Trad Rosner da Motta, Thais Reis da Silva, Natasha Veiga Louzada, Monica Costa Padilha, Henrique Marcelo Gualberto Pereira   +7 more
wiley   +1 more source

Recent Advances of Perovskite Oxides for Air Pollution Control Chemistry: The Closed Loop From Design to Application

EcoEnergy, EarlyView.
This review summarizes a descriptor‐guided framework for linking theoretical calculations, in situ/operando characterization, synthesis regulation, and application screening in functional materials. Emphasis is placed on dynamic structure–property relationships that enable low‐cost material design with enhanced activity, stability, and environmental ...
Yanyu Jin, Zezheng Tang, Hengfan Wu, Xing Yuan, Zongxiang Yang, Weijia An, Wenquan Cui, Xianguang Meng, Ying Xu, Junhua Li   +9 more
wiley   +1 more source

Synthesis, Updated Characterization, and Reactivity of Low‐Valent Titanocene Complexes

European Journal of Inorganic Chemistry, EarlyView.
Syntheses and characterizations are provided for a series of low‐valent titanocene complexes including halotitanocene(III) dimers, [Cp2Ti(κ2‐DME)][BAr4] cations, and heterobimetallic [Cp2Ti(μ‐Cl)2AlR2]. Additionally, a monomeric titanacyclopropene complex featuring a pendent phosphine was prepared, and C─F bond activation upon reduction of [Cp{η5:κ2F2 ...
Griffin J. LaChapelle, James F. Britten, David J. H. Emslie   +2 more
wiley   +1 more source

Selective N‐Functionalization of Pyrazoles

European Journal of Organic Chemistry, EarlyView.
This review traces the evolution of regioselective N‐functionalization strategies for pyrazoles, a key class of nitrogen heterocycles widely used in medicinal chemistry. Due to rapid tautomerism, N‐functionalization often lacks selectivity, leading to poor and unpredictable regioisomeric outcomes.
Lucas Popek, Matthias Schrader, Christopher J. Teskey   +2 more
wiley   +1 more source

Growth and Nitrogen Fixation in Silicon and/or Potassium Fed Chickpeas Grown under Drought and Well Watered Conditions [PDF]

Journal of Stress Physiology & Biochemistry, 2013
A pot experiment was conducted to study the effects of silicon (Si) and/or potassium (K) on plant growth, nitrogen uptake and N2-fixation in water stressed (FC1) and well watered (FC2) chickpea plants using 15N and 13C isotopes. Three fertilizer rates of
Fawaz Kurdali, Mohammad Al-Chammaa, Ahmad Mouasess   +2 more
doaj  

Enhancing g‐C3N4 Photocatalytic Activity: K‐Doping and CuO Heterojunction for Selective CO2 Conversion to CH4

Electron, EarlyView.
The CuO/K‐g‐C3N4 heterostructure photocatalyst achieves selective CO2 reduction to CH4 (93.03% selectivity) under visible‐light irradiation. K‐doping enhances crystallinity, whereas CuO forms a p‐n heterojunction to promote charge separation and electron transfer.
Ahmed Ismail, Sher Ali, Ahmad Iqbal, Muhammad Zahid, Syed ul Hasnain Bakhtiar, Jiabao Yi, Huabin Zhang, Sharafat Ali, Liang Qiao   +8 more
wiley   +1 more source