Results 101 to 110 of about 33,613 (263)
Issues Related to Water Hammer in Francis-Turbine Hydropower Schemes: A Review
EnergiesThis paper reviews key parameters which may cause unacceptable water hammer loads in Francis-turbine hydropower schemes. Water hammer control strategies are presented for this context including operational scenarios (closing and opening laws), surge ...
Anton Bergant +3 more
doaj +1 more source
American Journal of Community Psychology, EarlyView.Abstract Families' experience of homelessness is typically examined from the perspective of parents during or shortly after a shelter stay. Parents complain about rules, surveillance, crowding, and challenges to parenting in both homeless shelters and in doubling up with other households (sharing the others' homes), and relief when they attain their ...
Marybeth Shinn +2 more
wiley +1 more source
Speciation‐Controlled C–F Bond Functionalization Enabled by Zwitterionic Pnictinidenes
Angewandte Chemie, EarlyView.Zwitterionic pnictinidenes turn C–F activation into C–X bond construction, enabling broad defluorinative functionalization of polyfluoro(hetero)arenes under mild conditions. Rather than following a metallomimetic Sb(I)/Sb(III) redox turnover, catalysis is redirected by ligand scrambling into a redox‐neutral manifold, revealing catalyst speciation as a ...
Irene Sánchez‐Sordo +4 more
wiley +2 more sources
AgronomyTo address the inefficient crushing of fertilizer during the mechanized spreading process caused by the caking of high-humidity organic fertilizer, a fertilizer spreader with a combined rotor and lining plate crushing mechanism was proposed in this paper.
Bing Xu +3 more
doaj +1 more source
Building Investigation-Hammer Test, Guesthouse Building
, 2019 Hammer test yaitu suatu alat pemeriksaan mutu beton tanpa merusak beton. Disamping itu dengan menggunakan metode ini akan diperoleh cukup banyak data dalam waktu yang relatif singkat dengan biaya yang murah. Metode pengujian ini dilakukan dengan memberikan beban intact (tumbukan) pada permukaan beton dengan menggunakan suatu massa yang diaktifkan ...
openaire +2 more sources
Australian Journal of Social Issues, EarlyView.ABSTRACT In this paper, we trace the journey to create the Strong Roots for our Futures Program, a government program to resource and support Traditional Owners to undertake a range of activities in areas where no state recognition existed. We provide a background to state recognition in Victoria before considering the program design, leading to an ...
Nell Reidy +2 more
wiley +1 more source
Borylcyclopropanes: Synthetic Strategies and Applications
Angewandte Chemie, EarlyView.Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley +2 more sources
Research on Pump Start Positive-pressure Water Hammer Duration Law of Long-distance Pipeline
Shiyou jixie, 2016 Negative pressure wave-based pipeline monitoring system has a higher false alarm rate so as to affect application effects. False alarm data of production site shows nearly 30% of false alarms are given to pump start operation of the pump station, so it ...
Wang Mingda +6 more
doaj
Australian Journal of Social Issues, EarlyView.ABSTRACT As modes of activism rapidly evolve, activists—both seasoned and emerging—must increasingly navigate a hybrid terrain of both digital and non‐digital engagement. This paper draws on the personal narratives of 16 nascent activists based in Australia to explore how they develop competencies related to digital storytelling, which is critical to ...
Garth Stahl +5 more
wiley +1 more source
Meitan kexue jishuThe construction of large-diameter rescue boreholes in mines faces challenges such as tight timelines, complex geological conditions, and high requirements for trajectory accuracy. To meet the needs for efficient and reliable hole formation under complex
Shijun HAO +6 more
doaj +1 more source