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561.
Aamodt K Abelev B Abrahantes Quintana A Adamová D Adare AM Aggarwal MM Aglieri Rinella G Agocs AG Agostinelli A Aguilar Salazar S Ahammed Z Ahmad N Ahmad Masoodi A Ahn SU Akindinov A Aleksandrov D Alessandro B Alfaro Molina R Alici A Alkin A Almaráz Aviña E Alme J Alt T Altini V Altinpinar S Altsybeev I Andrei C Andronic A Anguelov V Anielski J Antičić T Antinori F Antonioli P Aphecetche L Appelshäuser H Arbor N Arcelli S Arend A Armesto N Arnaldi R Aronsson T Arsene IC Arslandok M Asryan A 《Physical review letters》2012,108(9):092301
The yield of charged particles associated with high-p(t) trigger particles (8
3 GeV/c on the away side drops to about 60% of that observed in pp collisions, while on the near side a moderate enhancement of 20%-30% is found. 相似文献
562.
Hyukjoon KwonWon-Kye Baek Myung-Sin KimWan-Soon Shin Jack J. Yoh 《Optics and Lasers in Engineering》2012,50(2):114-121
We measured the temperature-dependent absorptance of metals (Al, Ti, SS304) for continuous beams from 1.07 μm fiber laser and 10.6 μm CO2 laser using power sensors and infrared (IR) pyrometers. The absorptance measurements were repeated for metals with three different paint coatings. For measurements at elevated temperatures up to the melting point, integrating sphere is not practical since high temperature radiation from a heated target disturbs weak output from the sphere considerably. Our results provide how each metal, whether coated or uncoated, absorbs the infrared beams as temperature is elevated to a melting point. A polynomial approximation to the measured absorptance of each target is provided for modeling of the laser-metal interaction at elevated temperatures. 相似文献
563.
A single shot algorithm using a Fizeau interferometer was used to measure the form profile of a spherical smooth surface by means of fringe thinning process, which plays an important role in fringe patterns analysis. In this paper, an automatic processing technique based on the fringe thinning process is presented. The circular interference fringe pattern of the spherical smooth surface captured by the Fizeau interferometer was corrected by using the flat fielding method and then processed. Based on the fringe thinning and the assignment of the fringe orders, the information on the fringe feature was recovered automatically and the interference wavefront was reconstructed by the Zernike polynomial fitting method. The results were compared with the results measured by Bünnagel method, and the results were in good agreement. This means that the single shot algorithm is reliable, fast, and less sensitive to vibration and turbulence in surface form measurements. Simulation fringes with the ray tracing technique were obtained to match the practical fringes. 相似文献
564.
This paper describes an automated multiple-beam interferometry for measuring a calibrated step height of (27.00 ± 3.00) nm nominally. The fringes captured from the multiple-beam Fizeau–Tolansky interferometer were thinned by using a written program to obtain accurate measurement. We claim that multiple-beam interferometry based on automatic fringe thinning process can provide a real time solution for calibrating step heights precisely and with high accuracy. The uncertainty budget of the multiple-beam interferometry method due to incomplete parallelism of the incident beam and the inhomogeneity of the reflecting layers was calculated automatically with a written ray tracing program. The uncertainty budget in multiple-beam interferometry was estimated to be of the order of 3.00 nm. 相似文献
565.
Changhyun Jin Hyunsoo Kim Kyungjoon Baek Hyoun Woo Kim Chongmu Lee 《Crystal Research and Technology》2010,45(2):199-203
Ga2O3/SnO2 coaxial nanowires were synthesized by thermal evaporation of GaN powders and then atomic layer deposition of SnO2. Transmission electron microscopy (TEM) and X‐ray diffraction (XRD) analysis results indicate that the Ga2O3 cores and the SnO2 shells of the coaxial nanowires after thermal annealing are single crystals with monoclinic and simple orthorhombic structures, respectively, although the SnO2 shells are amorphous before annealing. Our results also show that photoluminescence (PL) emission can be enhanced by thermal annealing in an H2/N2 atmosphere. EDX concentration profile suggests that the enhancement in the bluish green emission is due to the increase in the concentration of the Ga vacancies in the cores during the H2/N2 annealing. On the other hand, a red emission is newly formed while the bluish green emission is degraded by annealing in an oxygen or nitrogen atmosphere (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
566.
567.
Journal of Solid State Electrochemistry - In this work, the effects of hydrothermal growth temperature on the morphology and electrochemical characteristics of NiCo hydroxides were studied. The... 相似文献
568.
Hee Yang Lee Dr. Seungyeop Baek Minhae Cha Prof. Seung-Hoon Yang Illhwan Cho Heewon Shin Dr. Sejin Lee Dr. Hye Yun Kim Songmin Lee Dr. Jisu Shin Dr. Donghee Lee Kyeonghwan Kim InWook Park Soljee Yoon Dr. Jiyoon Kim Seong Jeong Park Dr. Seong Muk Kim Ko Eun Kim Hye Ju Kim Min-Seok Oh Dr. Gwan-Ho Lee Dr. Byung-Yong Yu Priyadharshini Kannan Dr. Keunwan Park Prof. YoungSoo Kim 《Angewandte Chemie (International ed. in English)》2023,62(7):e202210209
Amyloid-β (Aβ) in the form of neurotoxic aggregates is regarded as the main pathological initiator and key therapeutic target of Alzheimer's disease. However, anti-Aβ drug development has been impeded by the lack of a target needed for structure-based drug design and low permeability of the blood–brain barrier (BBB). An attractive therapeutic strategy is the development of amyloid-based anti-Aβ peptidomimetics that exploit the self-assembling nature of Aβ and penetrate the BBB. Herein, we designed a dimeric peptide drug candidate based on the N-terminal fragment of Aβ, DAB, found to cross the BBB and solubilize Aβ oligomers and fibrils. Administration of DAB reduced amyloid burden in 5XFAD mice, and downregulated neuroinflammation and prevented memory impairment in the Y-maze test. Peptide mapping assays and molecular docking studies were utilized to elucidate DAB-Aβ interaction. To further understand the active regions of DAB, we assessed the dissociative activity of DAB with sequence modifications. 相似文献
569.
Jong-Pil Jeon Yu Jin Kim Dr. Se Hun Joo Dr. Hyuk-Jun Noh Prof. Sang Kyu Kwak Prof. Jong-Beom Baek 《Angewandte Chemie (International ed. in English)》2023,62(12):e202217416
Covalent organic frameworks have recently shown high potential for photocatalytic hydrogen production. However, their structure-property-activity relationship has not been sufficiently explored to identify a research direction for structural design. Herein, we report the design and synthesis of four benzotrithiophene (BTT)-based covalent organic frameworks (COFs) with different conjugations of building units, and their photocatalytic activity for hydrogen production. All four BTT-COFs had slipped parallel stacking patterns with high crystallinity and specific surface areas. The change in the degree of conjugation was found to rationally tune the rate of photocatalytic hydrogen evolution. Based on the experimental and calculation results, the tunable photocatalytic performance could be mainly attributed to the electron affinity and charge trapping of the electron accepting units. This study provides important insights for designing covalent organic frameworks for efficient photocatalysts. 相似文献