Results 91 to 100 of about 3,664 (281)

On the Serpentine of Syracuse, N.Y.

Science, 1887
n ...
openaire   +3 more sources

gas produced by serpentinization within oceanic lithosphere

, 2016
It has recently been estimated that serpentinization within continental lithosphere produces H2 at rates comparable to oceanic lithosphere (both are ~1011 mol H2/yr).
Lincoln F. Pratson, Jeffrey A. Karson, Emily M. Klein, Stacey L. Worman   +3 more
core   +1 more source

Transferable Deep Reinforcement Learning With Edge‐Contour‐Depth Fusion for Autonomous Wireless Capsule Endoscopy Navigation

Advanced Science, EarlyView.
This study presents an anatomical landmark‐guided DRL framework for autonomous wireless capsule endoscopy navigation. Using a lightweight edge‐contour‐depth fusion module, it achieves over 97% coverage across diverse gastric anatomies. To ensure reliability, a two‐stage sim‐to‐real pipeline with an adaptive dynamic programming controller mitigates ...
Haoxuan Wu, Haitao Gao, Qingyang Liu, Sishen Yuan, Haiyang Fang, Mingwu Su, Baijia Liang, Yongzun Yang, Long Bai, Wenzhen Dong, Dihong Xie, Shijian Su, Jiewen Lai, Shing Shin Cheng, Zhen Li, Xiuli Zuo, Hongliang Ren   +16 more
wiley   +1 more source

Finding geologic hydrogen generation in UAE ophiolites: insights from MT phase tensor mapping of serpentinization

Discover Applied Sciences
Geologic hydrogen is emerging as a primary energy source, drawing growing interest from the scientific community and the energy sector. One of the primary geochemical mechanisms for natural hydrogen generation is serpentinization, which is the hydration ...
Biruk Abera Cherkose, Mengli Zhang, Yaoguo Li   +2 more
doaj   +1 more source

Behaviour of fluid-mobile elements across a high-pressure serpentinization front (Monte Maggiore unit, Alpine Corsica)

Subducted sections of dry oceanic mantle can undergo serpentinization through interaction with metamorphic fluids, recording a sequence of serpentinization events from the subseafloor to serpentine-out reactions.
Ressico, Francesco, Olivieri, Orlando Sébastien, Cannaò, Enrico, Peverelli, Veronica, Brovarone, Alberto Vitale, Malaspina, Nadia, Vitale Brovarone, Alberto, Pastore, Zeudia   +7 more
core   +1 more source

Hydroxychloride‐Bearing Fluid Inclusions in Ultramafic Rocks From New Caledonia: Implications for Serpentinization in Saline Environments on Earth and Beyond

, 2022
Serpentinization produces H-2 and synthesizes CH4 that can support nonphotosynthetic habitability on Earth and possibly beyond. Although fluids on Earth and beyond that may participate in serpentinization are extensively saline with elevated levels of ...
Xing Ding, Wan‐Cai Li, Xian, Haiyang, Long Zhang, Ding, Xing, Li, Wan-Cai, Zhang, Long, Haiyang Xian, Denis S. Mikhailenko, Wang, Qiang, Mikhailenko, Denis S., Qiang Wang   +11 more
core   +1 more source

Mass‐Transport–Engineered CCM Architecture Employing MPL‐Free Carbon Paper and Graphene‐Coated Ni Foam Channels for High‐Temperature PEM Fuel Cells

Advanced Science, EarlyView.
A CCM‐based architectural strategy is introduced for high‐temperature PEM fuel cells, enabling MPL‐free carbon paper gas diffusion layers via decal‐transfer processing. By co‐engineering the CCM, GDL, and a G‐foam flow field, oxygen transport is enhanced while phosphoric‐acid leakage is suppressed, resulting in high power density and stable operation ...
Seongmin Cho, Songi Oh, Mingyu Kim, Jung Hwa Choi, Sunjae Hwang, Ji‐Hoon Jang, Segeun Jang   +6 more
wiley   +1 more source

Prebiotic aqueous reactions catalyzed by native nickel without hydrogen. [PDF]

FEBS J
Serpentinizing (H2‐producing) hydrothermal vents are candidate environments for metabolic origin. They generate highly reducing conditions that convert CO2 to formate and methane in abiotic reactions resembling reactions of the acetyl‐CoA pathway of CO2 fixation. They also contain natural catalysts. Native nickel (Ni0), like Fe0, Co0, and their alloys,
Garcia Garcia C, Brabender M, Martin WF.
europepmc   +2 more sources

A Data‐Driven Inverse Design Methodology for Magnetic Soft Millirobots Navigating in Confined Spaces

Advanced Science, EarlyView.
A data‐efficient inverse design framework automates the optimization of magnetic soft millirobots for confined‐space navigation. Integrating a physics‐based Cosserat rod model with Bayesian optimization efficiently identifies high‐performance geometries.
Ziyu Ren, Hong Wang, Chak Wang Tse, Yi Zheng, Xi Chen, Wenqi Hu   +5 more
wiley   +1 more source

Serpentine supravenous hyperpigmentation

Clinical Case Reports, 2017
Key Clinical Message Serpentine supravenous hyperpigmentation is a peculiar cutaneous eruption that follows the path of vein after intravenous injection of the chemotherapeutic agent. The lesions gradually resolve spontaneously if administration of the offending agent is stopped through the affected limb. Drugs such as 5‐fluorouracil,
Indirakshi Jamalpur, Harikrishna Reddy Mogili, Abhilash Koratala   +2 more
openaire   +2 more sources