Results 41 to 50 of about 3,261 (224)

Synthesis of a Naphthotetrazine from Diethyl Succinylosuccinate and Dicyandiamide. [PDF]

, 1917
On account of the ease with which dicyandiamide can be prepared in quantity and at very small cost from the crude calcium cyanamide of commerce, this substance is beginning to find numerous applications in organic syntheses.
Dox, Arthur W.
core   +1 more source

Mechanism of the dicyandiamide/epoxide reaction

Macromolecules, 1991
A mechanism is proposed for the dicyandiamide (dicy) cure of epoxyresins based on the analysis of products formed by the reaction of a monofunctional epoxide with dicy and with cyanamide. Products were isolated from the uncatalyzed reaction mixtures using preparatory liquid chromatography and were characterized by FTIR, NMR, mass spectrometry, and ...
MacKnight, William, Gilbert, Michael D., Schneider, Nathan S.   +2 more
openaire   +2 more sources

MXenes as a Versatile Platform for High‐Energy‐Density Asymmetric Supercapacitors

Carbon Energy, EarlyView.
MXenes with high conductivity and tunable surface chemistry are reviewed as advanced electrodes for asymmetric supercapacitors. MAX‐phase synthesis, surface and interlayer engineering, defect modulation, and composite designs are discussed, highlighting enhanced ion transport, pseudocapacitance, energy density, cycling stability, and sustainable routes
Seul‐Yi Lee, Jagadis Gautam, Shrikant Vaiju Sadavar, Soo‐Jin Park   +3 more
wiley   +1 more source

Correlation between stabilizer consumption and degree of polymerization of thermally upgraded paper aged in insulating natural ester and insulating mineral oil

Polímeros, 2016
Insulating paper holds significant importance in the insulation system of power transformers, and thus, its degradation is the subject of many studies.
Larissa Mildemberger, Mario Carlos Andreoli, Guilherme Cunha da Silva, Heloisa Nunes da Motta, Joseane Valente Gulmine, Marilda Munaro   +5 more
doaj   +1 more source

Nitrification inhibitor and management of liquid hog manure: the effect on soil mineral nitrogen dynamics and wheat yield

Semina: Ciências Agrárias, 2023
Management is of fundamental importance in increasing the efficiency of liquid hog manure (LHM) when used as a source of nitrogen (N) and minimizing its impact on the environment.
Marlo Adriano Bison Pinto, Claudir José Basso, Janine Diéle Feltes, Dionei Schmidt Muraro, Stefen Barbosa Pujol   +4 more
doaj   +1 more source

Unveiling the Potential of Metal and Non‐Metal Modified Porous Carbon for the Electrochemical Reduction of CO2

Carbon Energy, EarlyView.
Earth‐abundant metal‐ and non‐metal‐modified porous carbons offer a highly tunable platform for electrochemical CO2 reduction. This review shows how electronic interactions, active‐site coordination, pore architecture, and cooperative catalytic effects jointly govern intermediate stabilization, product selectivity, and device‐relevant CO2RR performance.
Hussein A. Younus, Asma Al Harthi, Mohammed Al Abri, Kamel Eid, Rashid Al Hajri   +4 more
wiley   +1 more source

Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor

Pesquisa Agropecuária Tropical, 2013
The use of cover crops can change the soil NO3-: NH4+ ratio, providing larger amounts of NH4+, and enable the development of crops which absorb more or prefer this form of nitrogen (N), like rice.
Edemar Moro, Carlos Alexandre Costa Crusciol, Adriano Stephan Nascente, Heitor Cantarella   +3 more
doaj   +1 more source

Interface‐Engineered MXene/g‐C3N4 Heterostructures for Energy and Environmental Applications

EcoEnergy, EarlyView.
This review highlights how interface engineering in MXene/g‐C3N4 heterostructures regulates charge transfer, band alignment, and surface chemistry, enabling broad applications in photocatalytic conversion, environmental remediation, energy storage, and multifunctional sensing/therapy. ABSTRACT Two‐dimensional MXene/g‐C3N4 heterostructures have recently
Feng Wang, Geng Liu, Xiaoqiang An
wiley   +1 more source

Effects of nitrogen application rate, nitrogen synergist and biochar on nitrous oxide emissions from vegetable field in south China.

PLoS ONE, 2017
Globally, vegetable fields are the primary source of greenhouse gas emissions. A closed-chamber method together with gas chromatography was used to measure the fluxes of nitrous oxide (N2O) emissions in typical vegetable fields planted with four ...
Qiong Yi, Shuanghu Tang, Xiaolin Fan, Mu Zhang, Yuwan Pang, Xu Huang, Qiaoyi Huang   +6 more
doaj   +1 more source

Dual‐Atom Catalysts for Bifunctional Oxygen Electrocatalysis: Controllable Construction and Synergistic Mechanisms

EcoEnergy, EarlyView.
This review focuses on controllable construction, geometric‐/electronic‐structure characterizations, and synergistic mechanisms of the bimetallic dual‐atom sites in the recently emerging bifunctional dual‐atom catalysts for the oxygen reduction/evolution reactions.
Zhaoxiao Hao, Shujie Zhang, Kuangmin Zhao, Suqin Liu, Zhen He   +4 more
wiley   +1 more source