Results 41 to 50 of about 272,374 (381)

Synthesis of Water-Soluble Copolymers of N-vinylpyrrolidone with N-vinyldithiocarbamate as Multidentate Polymeric Chelation Systems and Their Complexes with Indium and Gallium

Molecules, 2020
Dithiocarbamate (DTC) derivatives of N-vinylpyrrolidone-N-vinylamine (VP–VA) copolymers were synthesized via reaction between the copolymers and carbon disulfide in alkaline medium; molecular masses of the products were 12 and 29 kDa; the VP:VDTC ratios ...
Nikolay I. Gorshkov, Andrey Yu. Murko, Irina I. Gavrilova, Marina A. Bezrukova, Albert I. Kipper, Valerii D. Krasikov, Evgenii F. Panarin   +6 more
doaj   +1 more source

Comparison of micromorphological changes in enamel using SEM analysis after conventional and erbium, chromium:yttrium, scandium, gallium, and garnet hard-tissue laser fissurotomy: An in vitro study

Journal of Indian Society of Pedodontics and Preventive Dentistry, 2023
Background: Well articulated by John Knowles – “Everything has to evolve or else it perishes.” With the paradigm shift of emphasis toward the prevention of dental caries, it has been proven that laser irradiation protects against both caries initiation ...
Priyanka Aggarwal, Pallavi Anand, Kopal Singh, Pulkit Jhingan, Manvi Malik, Shivani Mathur   +5 more
doaj   +1 more source

Ab Initio Study of the Effect of Mono-Vacancies on the Metastability of Ga-Stabilized δ-Pu

Applied Sciences, 2020
Most experimental studies on metallic Pu are on the room temperature monoclinic α-phase or the fcc Ga stabilized δ-phase. Stabilized δ-phase Pu-Ga alloys are metastable and exhibit a martensitic phase transformation to α’-phase at low temperatures, or ...
Sarah C. Hernandez, Franz J. Freibert
doaj   +1 more source

Towards High Efficiency and Rapid Production of Room-Temperature Liquid Metal Wires Compatible with Electronic Prototyping Connectors

Micromachines, 2023
We present in this work new methodologies to produce, refine, and interconnect room-temperature liquid-metal-core thermoplastic elastomer wires that have extreme extendibility (>500%), low production time and cost at scale, and may be integrated into ...
Luka Morita, Shima Jalali, Abolfazl Vaheb, Rawan Elsersawy, Kunj Golwala, Asad Asad, Patricia I. Dolez, James D. Hogan, Mohammad Abu Hasan Khondoker, Dan Sameoto   +9 more
doaj   +1 more source

High-concentration silver alloying and steep back-contact gallium grading enabling copper indium gallium selenide solar cell with 23.6% efficiency

Nature Energy
Chalcopyrite-based solar cells have reached an efficiency of 23.35%, yet further improvements have been challenging. Here we present a 23.64% certified efficiency for a (Ag,Cu)(In,Ga)Se2 solar cell, achieved through the implementation of a series of ...
J. Keller, Klara Kiselman, O. Donzel‐Gargand, N. Martin, Melike Babucci, O. Lundberg, E. Wallin, Lars Stolt, M. Edoff   +8 more
semanticscholar   +1 more source

Gallium Aluminum Arsenide/Gallium Arsenide Integrated Optical Repeater [PDF]

, 1984
A low threshold buried heterostructure laser, a metal-semiconductor field effect transistor (MESFET), and a photodiode, have for the first time, been monolithically integrated on a semi-insulating GaAs substrate.
Bar-Chaim, N., Lau, K. Y., Ury, I., Yariv, A.   +3 more
core   +1 more source

An Activated Bismuth Layer Formed In Situ on a Solid Bismuth Microelectrode for Electrochemical Sensitive Determination of Ga(III)

Membranes, 2022
In this paper, an activated bismuth layer formed in situ on a solid bismuth microelectrode, used as a working electrode for the electrochemical sensitive determination of Ga(III), based on anodic stripping voltammetry (ASV) is discussed.
Malgorzata Grabarczyk, Edyta Wlazlowska
doaj   +1 more source

Study on Leaching of Gallium and Scandium from a Gibbsite-Type Bauxite

Kuangchan zonghe liyong
This is an article in the field of metallurgical engineering. There are high contents of gallium and scandium in bauxite, which has great recovery value.
Changju JIANG, Zhanchang LEI, Zhiping FAN   +2 more
doaj   +1 more source

Corrosion Behavior and Biocompatibility of Hot-Extruded Mg–Zn–Ga–(Y) Biodegradable Alloys

Journal of Functional Biomaterials, 2022
Fixation screws and other temporary magnesium alloy fixation devices are used in orthopedic practice because of their biodegradability, biocompatibility and acceptable biodegradation rates.
Viacheslav Bazhenov, Anna Li, Artem Iliasov, Vasily Bautin, Sofia Plegunova, Andrey Koltygin, Alexander Komissarov, Maxim Abakumov, Nikolay Redko, Kwang Seon Shin   +9 more
doaj   +1 more source

Liberation and Separation of Valuable Components from LED Modules: Presentation of Two Innovative Approaches

Recycling, 2022
The rapid development of light-emitting-diode (LED) technology is attributed to its superiority over light sources of earlier generations. Although LED lamps, compared to compact fluorescent lamps, are considered less harmful to the environment, there is
Adam Balinski, Volker Recksiek, Michael Stoll, Christian Christesen, Michael Stelter   +4 more
doaj   +1 more source