Results 121 to 130 of about 3,562,404 (304)

Study of high-frequency impact extrusion bionic drilling technology for soft coal seams

Frontiers in Earth Science
Soft coal seams represent a common geological feature in coal and gas outburst mines. They generate a substantial amount of coal debris during gas extraction drilling, which easily causes hole blockage and leads to drilling hazards such as pipe sticking,
Hongjie Tian, Hongjie Tian, Dongzhuang Tian, Dongzhuang Tian, Zaixu Chen   +4 more
doaj   +1 more source

Proceedings of the Integrated Ocean Drilling Program 311: Cascadia Margin Gas Hydrates

, 2006
<p>A transect of four sites was drilled across the northern Cascadia margin during Integrated Ocean Drilling Program Expedition 311 to study the occurrences and formation of gas hydrate in accretionary complexes.
Wang, Jiasheng, Tréhu, Anne M., Malinverno, Alberto, Kaneko, Masanori, Pohlman, John, Malone, Mitchell J., Hashimoto, Yoshitaka, Blanc-Valleron, Marie M., Riedel, Michael, Long, Philip E., Myers, Greg, Palekar, Leena D., Holland, Melanie, Collett, Timothy S., Akiba, Fumio, Yoshioka, Hideyoshi, Ellis, Michelle, Heuer, Verena, Kim, Ji-Hoon, Jackson, Peter D., Torres, Marta E., Schultheiss, Peter, Wortmann, Ulrich G., Kastner, Miriam, Kitajima, Hiroko, Teichert, Barbara, Higashi, Yosuke, Guèrin, Gilles   +27 more
core   +1 more source

Spectrally Programmable Spin‐Polarized Photocurrents in WSe2–NiPS3 Magnetic van der Waals Heterostructures

Advanced Materials, EarlyView.
Heterostructure photodiode devices of p‐type WSe2 with n‐type NiPS3 constructs spectrally protected spin‐polarized photocurrents. The energy of the excitation photon serves as an independent control parameter for spin‐selective photocurrent generation. ABSTRACT Efficient generation and control of spin‐polarized currents in semiconductors remain central
Rajesh Kumar Yadav, Michal Poplinger, Adi Levi, Adi Harchol, Nirman Chakraborty, Thomas Brumme, Thomas Heine, Efrat Lifshitz, Doron Naveh   +8 more
wiley   +1 more source

Lab‐in‐a‐Tube System Integrating Hierarchically Wrinkled Electrodes and DNAzyme‐Functionalized Beads for Diagnosis of Clostridioides difficile Infection

Advanced Materials, EarlyView.
The point‐of‐care diagnosis of Clostridioides difficile infection remains challenging due to reliance on slow culture and amplification‐based methods. A lab‐in‐a‐tube electrochemical biosensor integrating DNAzymes, antifouling magnetic beads, and a hierarchically structured flow cell enables amplification‐ and culture‐free detection directly in stool ...
Survanshu Saxena, Soyeon Lee, Youngeun Choi, Jonathan L'Heureux‐Hache, Jiaying Liu, Sadman Sakib, Sara M. Imani, Marek Smieja, Yingfu Li, Todd Hoare, Leyla Soleymani   +10 more
wiley   +1 more source

A review of the critical conditions required for effective hole cleaning while horizontal drilling

Petroleum
Horizontal drilling has become increasingly prevalent in the oil and gas industry due to its potential for enhanced reservoir recovery and reduced environmental impact.
Amir Shokry Youssef, Ahmed Abdulhamid Mahmoud, Salaheldin Elkatatny, Talal Al Shafloot   +3 more
doaj   +1 more source

Proceedings of the Integrated Ocean Drilling Program 318: Wilkes Land Glacial History

, 2011
<p>Understanding the evolution and dynamics of the Antarctic cryosphere, from its inception during the Eocene–Oligocene transition (~34 Ma) through the significant subsequent periods of likely coupled climate and atmospheric greenhouse gas ...
Huck, Claire, Katsuki, Kota, Olney, Matthew, Shrivastava, Prakash Kumar, Fehr, Annick, Yamane, Masako, Gonzalez, Jhon Jairo, Tuo, Shouting, Bendle, James A.P., Passchier, Sandra, McKay, Robert M., Riesselman, Christina, Jimenez-Espejo, Francisco J., Röhl, Ursula, Sakai, Toyosaburo, Tauxe, Lisa, Bijl, Peter K., Stickley, Catherine E., Bohaty, Steven, Dunbar, Robert B., Flores, Jose A., Sugisaki, Saiko T., Hayden, Travis G., Kong, Gee Soo, van de Flierdt, Tina, Brinkhuis, Henk, Carr, Stephanie, Pekar, Stephen F., Pross, Jörg, Williams, Trevor, Welsh, Kevin, Escutia, Carlota, Klaus, Adam, Nakai, Mutsumi, Iwai, Masao   +34 more
core   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

An experimental comparative study of drilling efficiency and temperature elevation with unmodified and modified medical drills in pig tibia bone. [PDF]

Heliyon, 2019
Enokida M, Kanaya H, Uehara K, Ueki M, Nagashima H.   +4 more
europepmc   +1 more source

Proceedings of the Integrated Ocean Drilling Program 309/312: Superfast Spreading Rate Crust 2 and 3

, 2006
<p>The Superfast Spreading Rate Crust mission is a multicruise program to drill, for the first time, a complete section of the upper oceanic crust from the extrusive lavas, through the dikes, and into the underlying gabbros.
Galli, Laura, Umino, Susumu, Tikku, Anahita A., Teagle, Damon A.H., Wilson, Douglas S., Sakuyama, Tetsuya, MacLennan, John, Scheiber, Birgit, Gao, Yongjun, Gilbert, Lisa A., Hirano, Nobuo, Tominaga, Masako, Lledo Vasquez, Haroldo L., Laverne, Christine, Miyashita, Sumio, Swift, Stephen A., Crispini, Laura, Anma, Ryo, Herrero-Bervera, Emilio, Alt, Jeffrey C., Morgan, Sally, Koepke, Juergen H., Sano, Takashi, Reichow, Marc, Einaudi, Florence, Coggon, Rosalind, Rodriguez Durand, Sedelia, Tartarotti, Paola, Smith-Duque, Christopher E., Geldmacher, Jörg, Holter, Sara Ann, Yamazaki, Shusaku, Cordier, Carole, Hayman, Nicholas W., Park, Sung Hyun, Veloso Espinosa, Eugenio A., Banerjee, Neil R., Neo, Natsuki, Yamasaki, Toru, Christie, David M., Ingle, Stephanie   +40 more
core   +1 more source

Biohybrid Crawling Robot With Spiral‐Spring Backbone and Inclined Legs for Enhanced Locomotion

Advanced Materials, EarlyView.
We present a biohybrid crawling robot integrating a muscle ring with a flexible skeleton combining two complementary structural elements. The spiral‐spring backbone enables large‐amplitude bending without compromising axial stability, while outward‐inclined legs with unequal front–rear lengths effectively convert deformation into directional strides ...
Tomohiro Morita, Minghao Nie, Shoji Takeuchi   +2 more
wiley   +1 more source