Results 51 to 60 of about 5,509 (177)

تحضير بعض مركبات الثايادايازول والاوكسادايازول المشتقة من حامض السيناميك ومعوضاته [PDF]

مجلة ابحاث كلية التربية الاساسية, 2018
In this paper we prepared 4-nitrocenamic acid and cenamic acid (1,2) by reaction of one mole of (4-nitrobanzaldehyde and benzaldehyde) in the acetic hydrate potassium acetate as a base, then comes the reaction of number (1) compound to saturate double ...
م.د. نعم حازم سليم
doaj   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

Advanced Functional Materials, Volume 36, Issue 51, 25 June 2026.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf, Hiba Shahulhameed, Bhabani Sankar Swain, Shengzhong (Frank) Liu, Adel Najar   +4 more
wiley   +1 more source

Improvement Upon a Largely Forgotten Method for the Synthesis of N-Alkyl Urazoles

Reactions
N-Alkyl urazoles are important heterocyclic compounds that serve as important precursors to potent N-alkyl 1,2,4-triazoline-3,5-dione electrophiles. Traditional methods for urazole synthesis rely upon the use of toxic isocyanates.
Collin B. Dean, Amelia B. Jones, Olivia N. Silvers, Ava J. Travis, Bayla L. Zohbe, Gary W. Breton   +5 more
doaj   +1 more source

Synthesis and Bioactivity of N-Benzoyl-N'-[5-(2'-substituted phenyl)-2-furoyl] Semicarbazide Derivatives

Molecules, 2010
In order to find novel chitin synthesis inhibitors (CSIs) with good activity, benzoylphenylurea, a typical kind of CSIs, was chosen as the lead compound and 15 novel derivatives containing furan moieties were designed by converting the urea linkage of ...
Zining Cui, Yun Ling, Baoju Li, Yongqiang Li, Changhui Rui, Jingrong Cui, Yanxia Shi, Xinling Yang   +7 more
doaj   +1 more source

Design, preparation and application of the semicarbazide-pyridoyl-sulfonic acid-based nanocatalyst for the synthesis of pyranopyrazoles

Scientific Reports, 2022
A novel, efficient, and recoverable nanomagnetic catalyst bearing the semicarbazide linkers, namely, Fe3O4@SiO2@OSi(CH2)3-N(3-pyridoyl sulfonic acid)semicarbazide (FSiPSS) was designed, synthesized and characterized by the use of various techniques such ...
Masoumeh Beiranvand, Davood Habibi
doaj   +1 more source

Toxicological Evaluation of the Undesirable Components in Processed Infant Foods Using Artificial Intelligence

Future Postharvest and Food, Volume 3, Issue 2, Page 185-205, June 2026.
The detection of toxins in baby food using artificial intelligence. ABSTRACT Infant foods and baby formulas are becoming increasingly popular across the globe owing to their ease of consumption and nutritional value specific to infants. Impurities may find their way into the food chain at any point from the acquisition of raw materials to final ...
Poornima Singh, Anurag Singh, Ashutosh Upadhyay, Navneet Kumar   +3 more
wiley   +1 more source

Nitrofuran antibiotics: a review on the application, prohibition and residual analysis

Veterinární Medicína, 2008
Nitrofuran antibiotics, employed for the treatment of bacterial diseases in livestock production, were banned from use in the European Union (EU) in 1995 due to concerns about the carcinogenicity of their residues in edible tissue.
M. Vass, K. Hruska, M. Franek
doaj   +1 more source

Unveiling the Power of Deuterium in Drug Discovery: A Comprehensive Overview

MedComm, Volume 7, Issue 6, June 2026.
The role of deuterium replacement in drug discovery, its progress, opportunities, and challenges. ABSTRACT Deuterium, the heavy isotope of hydrogen, has unfolded as a cornerstone in modern drug discovery due to its potential to influence metabolic stability and pharmacokinetic behavior.
Mukta Lele, Ajit Manchare, Swapnali Parit, Amol D. Gholap, Krishna Jadhav, Navnath Hatvate, Keshav Raj Paudel, Satish Rojekar   +7 more
wiley   +1 more source

Synthesis, characterization, antimicrobial, and pharmacological evaluation of some 2, 5-disubstituted sulfonyl amino 1,3,4-oxadiazole and 2-amino-disubstituted 1,3,4-thiadiazole derivatives

Journal of Advanced Pharmaceutical Technology & Research, 2014
The presence of heterocyclic structures in diverse types of compounds, this is strongly indicative of the profound effect like structure exerts on physiologic activity, and recognition of this is abundantly reflected in efforts to find useful synthetic ...
Dilipkumar Pal, Rohit Tripathi, Desh Deepak Pandey, Preety Mishra   +3 more
doaj   +1 more source

On‐Demand Chemically Degradable Hydrogels for Biological Applications

ChemBioChem, Volume 27, Issue 6, 27 March 2026.
This review explores the mechanisms and kinetics of chemically induced on‐demand degradation in hydrogels designed for painless dressing removal and traceless dissolution across various biological applications. Covalent bond cleavage and noncovalent disruption triggers are compared, highlighting opportunities for load‐bearing scaffolds with faster ...
Xinyi Sheng, Justin Kim
wiley   +1 more source