Results 81 to 90 of about 325,651 (334)
Optimised dragline planning model [PDF]
, 1993 The presenting company provided data for typical operating parameters used in dragline operation. The problem for the Study Group was to investigate whether an optimal model of dragline operation could be developed.
Sier, D.
core
Preliminary assessment of roadheaders efficiency based on empirical methods and index of equivalent rock strength [PDF]
, 2019 Purpose. The choice of a proper roadheader is a critically important step in planning of a project or some of its stages. Nowadays various manufacturers produce numerous models of these vehicles, hence it is unreasonable to conduct a thorough analysis of
Averin, E +4 more
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Advanced Science, EarlyView.The Semaphorin 3E (Sema3E)‐Plexin‐D1 pathway mediated by C/EBPα and C/EBPβ downstream of the luteinizing hormone (LH) surge plays important roles in the mouse preovulatory ovary. Timely activation and suppression of this pathway during the preovulatory stage are crucial for ovulation, corpus luteum formation, and proper angiogenesis.
Hanxue Zhang +11 more
wiley +1 more source
The Excavations at Askalon [PDF]
Palestine Exploration Quarterly, 1922 n ...
openaire +2 more sources
Advanced Science, EarlyView.Drought is a major cause of crop losses across agricultural regions. Rhizosheath formation enhances plant resistance to drought. Polyploids may tolerate stress more effectively through increased interactions with bacteria. However, the contributions of tetraploid rice associated microbiota to rhizosheath formation under soil drying remain unclear ...
Feiyun Xu +23 more
wiley +1 more source
Advanced Science, EarlyView.The dynamic “spring‐like” behavior of Pd─Cu dual atoms with PdN3─CuN3 coordination structure can be stretched and recovered with potential variation, which remarkably elevates the structural stability and catalytic activity of Cu atoms for electrocatalytic reduction reactions in strong‐acid electrolytes. The modulated electron‐orbit coupling effect and
Pei‐Hua Li +12 more
wiley +1 more source
Use of Automatic Target Recognition System for the Displacement Measurements in a Small Diameter Tunnel Ahead of the Face of the Motorway Tunnel During Excavation [PDF]
, 2008 During construction of the Sentvid tunnel a unique opportunity arose to measure the 3D displacements ahead of the motorway tunnel excavation face, since the exploratory tunnel was already constructed in the axis of the main tunnel.
Ambrožič, Tomaž +5 more
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Organocatalytic C─O Bond Cleavage and Asymmetric Transformations via [1,3]‐Sigmatropic Rearrangement
Advanced Science, EarlyView.A direct asymmetric strategy for fulfilling the functional group transfer by aryl ether cleavage and migration is developed, representing the first Brønsted base‐catalyzed asymmetric [1,3]‐sigmatropic rearrangement reaction. The resulting chiral benzofuran products generated through this strategy exhibit significant 3D‐dimensionality and demonstrate ...
Lei Peng +7 more
wiley +1 more source
Equipment Combination Model for Effective Excavation Work for Urban High Rise Buildings
Journal of Asian Architecture and Building Engineering, 2017 The excavation work for constructing urban high-rise buildings is narrow and deep, limiting the mobility of equipment. In addition, the productivity of excavation work varies according to the type and amount of equipment used. Therefore, a combination of
Donghoon Lee, Jun-Young Park, Sunkuk Kim
doaj +1 more source
Gregory McMahon Associate Professor of History, COLA, travels to Turkey [PDF]
, 2011 Every summer since 1993, Professor McMahon has travelled to central Turkey to conduct a research project at the Çadır Höyük Excavation site.
McMahon, Gregory
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