Results 41 to 50 of about 1,500,948 (299)
Study of the Critical Speed of Ultra-High-Speed Diamond Drilling Technology in Marble
Applied SciencesIn order to effectively improve the drilling speed in deep hard rock and save drilling costs, this study explores the transformation mechanism and critical velocity range of ultra-high-speed diamond drilling technology on rock breaking effect, using ...
Yuxiao Li, Kai Zhang, Yue Wang
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Characterization of cassava starch processed in an internal mixer
Polímeros, 2013 An internal mixer connected to a torque rheometer was used to investigate the effect of moisture content (13.2 to 46.8 g.100g- 1), rotation speed (13.2 to 46.8 rpm) and processing temperature (53.2 to 86.8 °C), applying a factorial central composite ...
Marcia Cristina da Silva +4 more
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Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Science and Technology for Energy TransitionIn the drilling exploitation of hot dry rock for geothermal energy, whirling is one of the main low-efficiency conditions that affect the efficiency of Polycrystalline Diamond Compact (PDC) bit in horizontal well drilling.
Song Weiqiang +6 more
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Identification of coronal heating events in 3D simulations
, 2017 The solar coronal heating problem is an open question since 1939. One proposed model for the transport and release of mechanical energy generated in the sub-phorospheric layers and photosphere is the nanoflare model that incorporates Ohmic heating which ...
Gudiksen, Boris V., Kanella, Charalambos
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Quantum theory for parametric interactions of light and hypersound [PDF]
, 1965 The problem of energy exchange between two electro-magnetic modes of different frequencies and an acoustic mode is formulated and solved. The results of the quantum mechanical analysis are also analyzed in classical terms and are found to be consistent ...
Yariv, A.
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Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source
Laboratory Experimental Study on Rock Breaking Efficiency and Stability of PDC Bit
Shiyou jixie, 2020 In order to evaluate the rock breaking efficiency and stability of the newly developed PDC bit in the target lithologic formation, and guide the optimization, improvement and efficient use of the newly developed PDC bit, full scale laboratory rock ...
Zhang Jiawei +6 more
doaj
Octet-truss cellular materials for improved mechanical properties and specific energy absorption
Materials & Design, 2019 Optimization method has been widely acknowledged as an effective approach to design engineering structures, and yet few studies adopt this method to design cellular materials.
Jian Song +7 more
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Mechanical properties and energy absorbing capabilities of Z-pinned aluminum foam sandwich [PDF]
, 2019 Aluminum foam sandwich (AFS) structures are suitable for impact protection in lightweight structural components due to their specific energy absorption capability under compression.
Kadkhodapour, Javad +2 more
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