Results 91 to 100 of about 114,935 (289)

Principais aplicações das microondas na produção e refino de petróleo Principal applications of microwaves in production and refining of petroleum

Química Nova, 2008
Microwave irradiation offers a clean, inexpensive, and convenient method of heating, which is an alternative way of introducing energy into chemical systems.
Montserrat Fortuny, André Luis Dantas Ramos, Cláudio Dariva, Sílvia Maria da Silva Egues, Alexandre Ferreira Santos, Márcio Nele, Raquel Campos Cauby Coutinho   +6 more
doaj   +1 more source

Direct-current control of radiation-induced differential magnetoresistance oscillations in two-dimensional electron systems

, 2007
Magnetoresistance oscillations in two-dimensional electron systems driven simultaneously by a strong direct current and a microwave irradiation, are analyzed within a unified microscopic scheme treating both excitations on an equal footing. The microwave-
Ryzhii V. I., X. L. Lei
core   +1 more source

Microwave irradiation of gallium arsenide [PDF]

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2006
To study an influence of the microwave irradiation on a spectrum of defect states in semiconductor compound GaAs, we used measurements of luminescence spectra within the range 0.5 to 2.04 eV at 77 ?? before and after long (up to 13 min) treatments in air in the operation chamber of a magnetron at the frequency 2.45 GHz and surface power density 7.5 W ...
openaire   +2 more sources

Thermo‐Fluorescent Bactericidal Quantum Dots Based Smart Multifunctional Textiles via Molecular Surface Engineering and 3D‐Printed Interlocked Architectures

Advanced Healthcare Materials, EarlyView.
A versatile approach is presented for fabricating smart multifunctional textiles by integrating thermo‐fluorescent carbon dot/polymer nanocomposite coatings with 3D‐printed interlocked architectures. The fabrics exhibit temperature‐responsive fluorescence, durable hydrophobicity, strong antibacterial and antioxidant activity, and enhanced UV protection.
Poushali Das, Sayan Ganguly, Parham Khoshbakht Marvi, Misha Muthalali, Fatemeh Parniani, Shiza Hassan, Xiaowu (Shirley) Tang, Seshasai Srinivasan, Amin Reza Rajabzadeh   +8 more
wiley   +1 more source

Fracturing behavior of tight sandstone containing hollow double-wing crack (HDWC) under microwave irradiation

Journal of Rock Mechanics and Geotechnical Engineering
As an emerging rock-breaking technology, microwave irradiation has demonstrated significant potential as an auxiliary technique for volume stimulation in hydraulic fracturing.
Zeyu Zhu, Jing Xie, Yuze Du, Li Ren, Bengao Yang, Gan Feng, Mingxin Liu, Ting Ai, Ruifeng Tang, Yunlong Wang, Mingzhong Gao   +10 more
doaj   +1 more source

Microwave-Assisted Noncatalytic Esterification of Fatty Acid for Biodiesel Production: A Kinetic Study

Energies, 2020
This study developed a microwave-mediated noncatalytic esterification of oleic acid for producing ethyl biodiesel. The microwave irradiation process outperformed conventional heating methods for the reaction.
Hoang Chinh Nguyen, Fu-Ming Wang, Kim Khue Dinh, Thanh Truc Pham, Horng-Yi Juan, Nguyen Phuong Nguyen, Hwai Chyuan Ong, Chia-Hung Su   +7 more
doaj   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Preparation of shrimp waste as aqua feedstuff: a study of physicochemical properties and in vitro digestibility [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2014
The effects of different preparation methods (boiling, microwave irradiation, oven-drying, soaking, and sun-drying) for improving the protein quality of shrimp waste (SW) when used as aqua feedstuff were observed.
Karun Thongprajukeaw
doaj  

Shift of the surface-barrier part of the irreversibility line due to columnar defects in Bi_2Sr_2CaCu_2O_8 thin films

, 2003
We report the results of studying the influence of the uranium-ion irradiation of the Bi_2Sr_2CaCu_2O_8 thin films on the high-temperature part (close to critical temperature) of their irreversibility line. We studied irreversible properties of the films
Aukkaravittayapun, Civale, G. Jakob, G. Wirth, Gregory, H. Adrian, Kazumata, Klein, Konczykowski, Koshelev, M. Basset, Shaposhnikova, Shaposhnikova, Wagner, Wagner, Yu. Talanov, Zech   +16 more
core   +1 more source

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source