Materials Literature
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以双季铵盐表面活性剂为模板剂,水热条件下合成了硅铝比（nSi/nAl）为18、26和95的ZSM-5沸石纳米片,采用离子交换方法制备了铜改性的ZSM-5纳米片样品,并测试了其催化分解N2O性能。结合X射线衍射（XRD）、N2吸附/脱附、X射线荧光光谱（XRF）、扫描电镜（SEM）、透射电镜（TEM）、氢气程序升温还原（H2-TPR）、氧气程序升温脱附（O2-TPD）和原位红外漫反射光谱（CODRIFT）等表征结果 ,探讨了沸石硅铝比对于催化剂N2O分解性能的影响及其原因。结果表明,ZSM-5纳米片硅铝比越低,CuZSM-5纳米片催化剂的活性越高。催化活性的提高归因于低硅铝比催化剂上Cu＋活性物种可还原性的增强和吸附氧脱附能力的提高。
The dimensionless figure of merit, ZT, of Al-Mn-Si based C54 phase was effectively increased using the precipitation of a small amount of Al-Mn-Si based C40 phase, which possesses slightly smaller magnitude of both electrical resistivity and Seebeck coefficient than those of C54 phase. We prepared a series of samples…
One‐pot preparation of poly[4‐(5‐oxy‐1,3‐dioxoisoindolin‐2‐yl)benzoyl] (PODB) crystals which was an aromatic poly(ester‐imide) was examined by means of the reaction‐induced crystallization during polymerization of 4‐acetoxyphthalic anhydride (APA) and 4‐aminobenzoic acid (AmBA). Two‐step heating program was suitable f…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Το προτεινόμενο σύγγραμμα απευθύνεται κυρίως σε προπτυχιακούς σπουδαστές των Τεχνολογικών Εκπαιδευτικών Ιδρυμάτων που παρακολουθούν εργαστηριακά μαθήματα Μηχανικής Ρευστών. Από το γεγονός όμως ότι αναφέρεται στην χρήση μετρητικών οργάνων και εφαρμογή μετρητικών μεθόδων σε ροές ρευστών, θα φανεί χρήσιμο και σε επαγγελμ…
以MnSO4,（NH4）2S2O8为反应物,Ag＋作为催化剂的溶液相方法合成了线团状的α-MnO2。采用XRD、SEM和TEM等手段对合成产物进行了表征。发现反应温度和反应时间对产物的结晶度和形貌有很大的影响。通过恒电流充电/放电测试和循环伏安法（CV）对最终产物的电化学性能进行了表征。结果表明,由于其独特的形态,25℃下反应2d的产物作为锂离子电池正极材料,表现出良好的循环稳定性（100次循环后放电比容量为124 m Ah·g-1）。线团状α-MnO2在锂离子电池应用中可能是一个潜在的正极材料。
An extensive part of the road network in Sweden still consists of gravel roads, but operation and maintenance of these roads is complex due to the Swedish climate and the low traffic volume. This report further examines how operation and maintenance of gravel roads is executed and how it can be done in a cost effectiv…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Scientists in the fragrance industry are constantly searching for new odors to create as well as new, more efficient processes to create them. Scientists mainly look for new ways to synthesize fragrances that will reduce the impact on the environment, produce them at lower costs, produce higher yields, and sometimes t…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
自2015年9月18日大众柴油车尾气作假事件被美国加利福尼亚州空气资源委员会（CaliforniaAir Resources Board，CARB）正式曝光以来，大众处境可以说是内外“风雪交加”：
Microholographic data storage uses the entire photosensitive volume in a transparent disc the size of a DVD. The data bits, microgratings, are recorded using a high-NA focused laser beam which is mirrored into itself. For readout, the mirrored part of this beam is blocked by a shutter. In this work, an efficient calcu…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…
Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, m…