Results 91 to 100 of about 584,502 (236)

Internal Structure, Kinematics, and Prehistory of Frozen Debris Lobe‐A (FDL‐A), Brooks Range, Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Frozen Debris Lobe‐A (FDL‐A)—one of hundreds of FDLs in the Brooks Range of northern Alaska—is a slow‐moving landslide in permafrost that has been the subject of research since 2008 due to its close proximity to the Dalton Highway. Here, we synthesize more than a decade's worth of climate and surface measurements of monitored FDLs, and the ...
Margaret M. Darrow, Esther L. Babcock, Ben A. Leshchinsky   +2 more
wiley   +1 more source

Discovery of edodine, a natural compound from Lentinula edodes with antibacterial activity for the biological control of fire blight pathogen Erwinia amylovora

Pest Management Science, EarlyView.
Novel edodine was identified from Lentinula edodes HK761, exhibiting biocontrol potential against fire blight by affecting motility, intracellular ATP level, and cell division of Erwinia amylovora. Abstract BACKGROUND In the search for biological resources with antibacterial activity against Erwinia amylovora, the culture filtrate of Lentinula edodes ...
Yeong Seok Kim, Jae Woo Han, Bomin Kim, Chunggeon Lee, Daeui Park, Jaehyuk Choi, Gyung Ja Choi, Hun Kim   +7 more
wiley   +1 more source

Innovative 3D‐bioprinted microfibers in calcium phosphate cement platform with Nell‐1 to activate nerve‐bone axis for synergistic bone, vasculature, and nanofibrous nerve regeneration

Smart Molecules, EarlyView.
A 3D‐bioprinted platform with stem cells activates “nerve‐bone” signaling by enabling the spatiotemporal delivery of Nell‐1. This activation enhances neurovascular and bone regeneration through the CYFIP1 cascade. In rat calvarial defects, the platform doubled bone regeneration and nerve repair and tripled vascular density, resulting in superior ...
Minjia Zhu, Xinyi Li, Jingyi Li, Kan Yu, Zixiang Dai, Le Xiao, Qinrou Zhang, Zihan Jia, Qingchen Qiao, Zeqing Zhao, Ke Zhang, Yuxing Bai   +11 more
wiley   +1 more source

Acoustical properties of drill strings [PDF]

, 1988
The recovery of petrochemical and geothermal resources requires extensive drilling of wells to increasingly greater depths. Real-time collection and telemetry of data about the drilling process while it occurs thousands of feet below the surface is an effective way of improving the efficiency of drilling operations.
openaire   +2 more sources

Toward the Application of Multiaxial Failure Criteria: Mean Stress Sensitivity of Carbide‐Rich, High‐Alloy PM‐HIP Tool Steels Under Axial and Torsional Cyclic Loading

steel research international, EarlyView.
This study quantifies axial and torsional long‐life fatigue (LLF) behavior of three carbide‐rich PM‐HIP tool steels, correlating LLF strength with intrinsic defect size and cleanliness, thereby extracting material‐specific mean stress sensitivities and Haigh diagrams.
Lennart Mirko Scholl, Frederik Tegeder, Tobias Hajeck, Alexander Bezold, Christoph Broeckmann   +4 more
wiley   +1 more source

Research on Vibration Reduction and ROP Acceleration for Drilling in KOA Oilfield,Kazakhstan

Shiyou jixie, 2023
The KOA oilfield is located in the eastern margin of the Caspian Basin,Kazakhstan.The shallower Upper Permian of the oilfield is found with severe interbeding between sandstone and mudstone as well as interlayers of mudstone/slate and conglomerate.The ...
Wang Jianning, Zhou Yingcao, Zhao Jichen, Geng Jianhua, Qiao Jianfeng   +4 more
doaj  

Punching shear of unbonded post‐tensioned steel fiber reinforced concrete slabs: The fiber contribution

Structural Concrete, EarlyView.
Abstract Steel fiber reinforced concrete (SFRC) enhances the flexural capacity of flat slabs and, due to its effectiveness in statically redundant bi‐dimensional elements, represents a viable alternative to conventional reinforcement. Although numerous studies have investigated the flexural behavior of SFRC slabs with and without bonded reinforcement ...
Chiara Gaddi, Matteo Colombo, Marco di Prisco   +2 more
wiley   +1 more source

Integrating large mammalian herbivores into Dynamic Global Vegetation Models: Status and next steps

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Zoogeochemistry, the study of how animals influence elemental cycling within ecosystems, bridges the fields of zoology, ecology and biogeochemistry. Yet, most terrestrial ecosystem models, especially Dynamic Global Vegetation Models (DGVMs), remain largely plant‐centric
Yue Cheng, Joanne Alice O'Keeffe, Andrew J. Abraham, Jesper Riis Christiansen, Frederik Nygaard Philipsen, Klaus Steenberg Larsen, Fabio Berzaghi, Carsten W. Mueller, Lars Vesterdal, Jeppe A. Kristensen, Elizabeth Le Roux   +10 more
wiley   +1 more source

Dynamic Characteristics of Horizontal Drilling with Flexible Drill String Based on ABAQUS Explicit Dynamics

Shiyou jixie
During the drilling of ultrashort-radius radial horizontal well with flexible drill string， the vertical shift of wellbore trajectory affects the encountering rate of target points.
Liu Xin Huang Zhongwei Wu Xiaoguang Li Gensheng Shi Huaizhong Wang Jiarui Wang Minghao, Huang Zhongwei, Wu Xiaoguang, Li Gensheng, Shi Huaizhong, Wang Jiarui, Wang Minghao   +6 more
doaj   +3 more sources

125 years of exploration and research at Gough's Cave (Somerset, UK) 125 ans d'exploration et de recherches à Gough's Cave (Somerset, Royaume‐Uni)

Journal of the Royal Anthropological Institute, EarlyView.
Our understanding of the recolonization of northwest Europe in the period leading up to the Lateglacial Interstadial relies heavily on discoveries from Gough's Cave (Somerset, UK). Gough's Cave is the richest Late Upper Palaeolithic site in the British Isles, yielding an exceptional array of human remains, stone and organic artefacts, and butchered ...
Silvia M. Bello, Mark D. Lewis, Simon A. Parfitt   +2 more
wiley   +1 more source