Results 71 to 80 of about 206,868 (308)
Convergent Total Synthesis of 16β‐Hydroxylpseudobufarenogin
Angewandte Chemie, EarlyView.We present a novel convergent strategy that integrates Pd/Ag‐promoted Suzuki–Miyaura coupling with Ir‐catalyzed radical‐relay cyclization, enabling the first total synthesis of 16β‐hydroxylpseudobufarenogin. This approach is broadly applicable to the total synthesis of various oxygenated bufadienolides by simply modifying the fragment structures ...
Wataru Shigematsu +3 more
wiley +2 more sources
Study on forging process of valve based on response surface method
Metalurgija, 2020 This article takes the 21 - 4N engine valve as the research object and studies the effects of die forging temperature (1 000 - 1 180 °C), die forging speed (0,15 - 200 mm / s) and friction coefficient (0,1 - 0,5) on die forging results.
H. C. Ji +5 more
doaj
Advanced Science, EarlyView.ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li +12 more
wiley +1 more source
Advanced Science, EarlyView.This study first extends the high‐entropy concept to I‐III‐VI quantum dots (QDs) and synthesizes CZCrGSe/ZnSe/ZnS core/shell/shell QDs with a record photoluminescence quantum yield (PLQY) of 100%. Their ZnSe/ZnS double shell efficiently passivates defects and boosts structural stability.
Maoyuan Huang +9 more
wiley +1 more source
Teacher Candidates’ Involvement with Reading Interventions in High Needs Schools: Wrestling with the Everyday [PDF]
, 2015 The demands on new teachers as they enter the teaching profession are extensive and deep-rooted. This article provides insight into how faculty within a teacher education program in Ontario, Canada considered one service program emphasis and how it shed ...
Belcher, Christina, Sider, Steve
core +2 more sources
Advanced Electronic Materials, EarlyView.ABSTRACT The rapid advancement of flexible and wearable electronics demands printable thin‐film capacitors that combine high dielectric performance with scalable fabrication. However, achieving this balance in polymer dielectrics remains challenging, as enhancements in dielectric constant typically come at the expense of increased loss and reduced ...
Yujia Fan +7 more
wiley +1 more source
Review Thermomechanical Processing and Microstructure of High Strength-toughness Titanium Alloy
Journal of Aeronautical Materials, 2018 High strength-toughness titanium alloy has gradually attracted considerable attention as important engineering material in aerospace industry. Forging is a main thermomechanical processing method in high strength titanium alloy, With the major ...
WANG Huan +5 more
doaj +1 more source
Design of Production Technology of Die Forging Form [PDF]
, 2019 Tato bakalářská práce se zabývá výrobou kovací zápustky metodou obrábění. Úvodní část práce je zaměřena na rozbor kovacích zápustek z hlediska použití, materiálů, tepelného zpracování a povrchový úprav.
Vlček, Radim
core
Advanced Intelligent Systems, EarlyView.Visual features, numerical descriptors, and controlled textual attributes extracted from smartphone images of Chenpi are integrated by VALIANT, a tailored multimodal framework for simultaneous storage‐age classification and authenticity verification. The workflow distinguishes genuine products from suspicious standard operating procedure mimics while ...
Simon C. K. Chan +5 more
wiley +1 more source
Study on forging process and die design of parking sensor shell
MATEC Web of Conferences, 2018 The process of precision forging has been developed recently because of its advantages of giving high production rates and improved strength. For complete filling up, predicting the power requirement and final shape are important features of the forging ...
Yang Tung-Sheng, -Yuan Li Jhong
doaj +1 more source