Results 1 to 10 of about 2,805,233 (318)

On-machine measurement and compensation machining for ultra-precision cutting of optical aspheric surface

Jin'gangshi yu moliao moju gongcheng, 2022
An in-situ measurement device combining contact probe and capacitive displacement sensor is developed. An aspherical measurement and compensation machining software is also developed. The single point diamond ultra precision cutting experiments for C3604
Liang ZHANG, Xipeng GUO, Dingwen WANG, Wen XU, Jian LIU, Shuai HUANG, Shaohui YIN   +6 more
doaj   +1 more source

A Comprehensive Review of Lipidomics and Its Application to Assess Food Obtained from Farm Animals

Food Science of Animal Resources, 2022
Lipids are one of the major macronutrients essential for adequate growth and maintenance of human health. Their structure is not only complex but also diverse, which makes systematic and holistic analyses challenging; consequently, little is known ...
Yinghua Song, Changyun Cai, Yingzi Song, Xue Sun, Baoxiu Liu, Peng Xue, Mingxia Zhu, Wenqiong Chai, Yonghui Wang, Changfa Wang, Mengmeng Li   +10 more
doaj   +1 more source

Segmented Four-Element Photodiodes in a Three-Dimensional Laser Beam Angle Measurement

Photonics, 2023
Based on the registration of two laser beam projections, a method for measuring the angular deviation of a laser beam from its initial position in three-dimensional space is proposed and experimentally demonstrated.
Stanislav Konov, Aleksander Frolov, Petr Shapovalov, Pavel Peretyagin, Sergey Grigoriev   +4 more
doaj   +1 more source

On Defect Minimization Caused by Oxide Phase Formation in Laser Powder Bed Fusion

Metals, 2022
The article is devoted to the compressive review of the defects observed in the products of the machinery usage made mainly of anti-corrosion steels of the martensite-austenite group, difficult to process materials such as pure titanium, nickel, and ...
Anna A. Okunkova, Semen R. Shekhtman, Alexander S. Metel, Nadegda A. Suhova, Sergey V. Fedorov, Marina A. Volosova, Sergey N. Grigoriev   +6 more
doaj   +1 more source

The Effect of Plasma–Electrolytic Nitrocarburizing of a Medium Carbon Steel Surface on Friction and Wear in Pair with Tin–Lead Bronze

Metals, 2023
The possibility of increasing the durability of steel pins working against bronze bushings through plasma–electrolytic nitrocarburizing of the surface of medium carbon steel is shown.
Anatoly Borisov, Tatiana Mukhacheva, Sergei Kusmanov, Igor Suminov, Pavel Podrabinnik, Yaroslav Meleshkin, Sergey Grigoriev   +6 more
doaj   +1 more source

Possibilities of Additive Technologies for the Manufacturing of Tooling from Corrosion-Resistant Steels in Order to Protect Parts Surfaces from Thermochemical Treatment

Metals, 2021
The structure and physical–mechanical properties of products made from powders of corrosion-resistant steel 12X18H10T by the laser-beam powder bed fusion (LB-PBF) and subsequent ion-plasma nitriding in the work were investigated.
Alexander Metel, Tatiana Tarasova, Evgenii Gutsaliuk, Roman Khmyrov, Sergei Egorov, Sergey Grigoriev   +5 more
doaj   +1 more source

Photoinhibiting via simultaneous photoabsorption and free-radical reaction for high-fidelity light-based bioprinting

Nature Communications, 2023
Light-based 3D bioprinting is now employed widely to fabricate geometrically complex constructs for various biomedical applications. However, the inherent light scattering defect creates significant challenges in patterning dilute hydrogels to form high ...
Ning He, Xiaonan Wang, Liyang Shi, Jing Li, Lan Mo, Feng Chen, Yuting Huang, Hairong Liu, Xiaolong Zhu, Wei Zhu, Yiqi Mao, Xiaoxiao Han   +11 more
doaj   +1 more source

A High-Efficiency Neutron Detector [PDF]

Nature, 1950
THE recent development of scintillation counters as high-efficiency detectors of gamma-radiation makes attractive the possibility of detecting neutrons by means of the γ-rays produced in many neutron-induced reactions. Particularly interesting is the detection of the 480-keV. γ-ray given off by the excited lithium-7 in the reaction:
J C, DUCKWORTH, A W, MERRISON, A, WHITTAKER   +2 more
openaire   +2 more sources

Microtexturing of TiZrN-Coated Si3N4 cutting inserts for machining nickel alloy [PDF]

EPJ Web of Conferences
Insulating cutting ceramics exhibit outstanding mechanical and thermal properties but have electrical conductivity below the percolation threshold. It does not allow sophisticated shapes to be obtained by diamond grinding and polishing.
Volosova Marina A., Okunkova Anna A., Mustafaev Enver S., Gkhashim Khasan I., Malakhinsky Alexander P.   +4 more
doaj   +1 more source

Beam Shaping in Laser Powder Bed Fusion: Péclet Number and Dynamic Simulation

Metals, 2022
A uniform distribution of power density (energy flux) in a stationary laser beam leads to a decrease in the overheating of the material in the center of the laser beam spot during laser powder bed fusion and a decrease in material losses due to its ...
Sergey N. Grigoriev, Andrey V. Gusarov, Alexander S. Metel, Tatiana V. Tarasova, Marina A. Volosova, Anna A. Okunkova, Andrey S. Gusev   +6 more
doaj   +1 more source