Results 91 to 100 of about 916,843 (300)

Numerical study on drag and lift coefficients of a marine riser at high Reynolds number using COMSOL multiphysics

IOP Conference Series: Earth and Environment, 2020
Flow around a marine riser in water at the drag crisis regime was investigated using numerical modelling. In this regime, the drag coefficient drops off at a certain Reynolds number due to a change from laminar to turbulent flow.
M. Faizal Ahmad, Mohd Ridza Mohd Haniffah, A. Kueh, E. H. Kasiman   +3 more
semanticscholar   +1 more source

Ultrasound‐Activated Bifunctional Piezoelectric Hydrogel Dressings Promote Infected Wound Healing via Regulating Angiogenesis and Lymphangiogenesis

Advanced Science, EarlyView.
This study developed a double‐network hydrogel with piezoelectric properties, exhibiting excellent antibacterial activity and promoting fibroblast migration, angiogenesis, and lymphangiogenesis through piezoelectric stimulation, thereby accelerating the healing of infected chronic wounds.
Xiang Li, Zhen Ding, Zhihua Liu, Hao Chen, Jianyang Shan, Yanxuan Shao, Yaling Yu, Gen Wen   +7 more
wiley   +1 more source

A Chirality‐Converted Bacteriolytic Dodecapeptide Regulates Vibrio‐Induced Polymicrobial Infection and Ameliorates Invasion‐Associated Gut Microbiota Disequilibrium

Advanced Science, EarlyView.
Multidrug‐resistant Vibrio infections are rising rapidly and threaten coastal populations worldwide. This study introduces D‐zp37, a chirality‐engineered antimicrobial peptide with exceptional potency against resistant Vibrio species. D‐zp37 kills planktonic cells, blocks mixed‐species biofilms, disrupts essential bacterial stress responses, and shows ...
Ping Zeng, Qipeng Cheng, Xiaoxu Zhang, Honglan Wang, Jinghan Zhang, Xinyi Ding, Pengfei Zhang, Lanhua Yi, Kwok‐Yin Wong, Kin‐Fai Chan, Sheng Chen, Sharon Shui Yee Leung   +11 more
wiley   +1 more source

Mechanically Robust Biodegradable Stents With Theragenerative Vascular Responses via Combined 3D Printing and Janus Nanoengineering

Advanced Science, EarlyView.
This work introduces a theragenerative 3D‐printed biodegradable stent with Janus nanoarchitecture for spatially controlled vascular healing. A luminal tantalum ion–implanted surface accelerates endothelialization and hemocompatibility, while an abluminal sirolimus/poly‐L‐lactic acid–tantalum layer provides sustained drug release and suppresses smooth ...
Jong Hwa Seo, Dong‐Sung Won, Hyun Lee, Seojoon Bang, Hyeong Seok Kang, Ju Yeong Gwon, Chan Ho Moon, Ji Won Kim, Yubeen Park, Minho Kang, Dong Yun Lee, Donghyun Lim, Kisuk Yang, Gi Doo Cha, Soo‐Hong Lee, Tae‐Sik Jang, Seokbeom Kim, Jun‐Kyu Park, Jung‐Hoon Park, Hyun‐Do Jung   +19 more
wiley   +1 more source

Mechanical Analysis of Coupling of Deep Water Drilling Riser and Stratigraphic Pipe String

Shiyou jixie, 2018
During deep-water drilling operation, the safety of riser is crucial to the whole drilling process. In order to study the mechanics behavior of drilling system under complicated marine environment and seafloor geological conditions, considering the ...
Hua Yong, Qian Liqin, Wu Xinyuan, Xia Chengyu, Tu Yiliu, Xiang Zhengxin, Wang Jie   +6 more
doaj  

An experimental study on the key fretting variables for flexible marine risers [PDF]

, 2018
This paper presents an experimental investigation into the effects of contact conformity, contact pressure and displacement amplitude on the gross-slip fretting behaviour grease-lubricated cylinder-on-flat contacts in the context of flexible marine riser
Harte, A.M., Leen, S.B., O’Halloran, S.M., Shipway, P.H.   +3 more
core   +3 more sources

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

Advanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li, Yunjie Lu, Ziyan Huang, Jianjiang Chen, Yanbin Liu, Lei Qin, Chao Wang, Yumin Wu   +7 more
wiley   +1 more source

Dynamic risk assessment approach of riser recoil control failure during production test of marine natural gas hydrate

Energy Science & Engineering, 2019
The marine natural gas hydrate is considered to have huge resource potential in the South China Sea, and a sixty‐day production test has been successfully conducted in 2017.
Yuanjiang Chang, Jiayi Li, Changshuai Zhang, Guoming Chen, Xinhong Li, Shenyan Zhang, Liangbin Xu, Leixiang Sheng   +7 more
doaj   +1 more source

PICES Press, Vol. 6, No. 2, July 1998 [PDF]

, 1998
CREAMS, PICES and the exploration of the Japan/East Sea The state of the eastern North Pacific from September 97 to February 98 The state of the western North Pacific in the second half of 1997 The status of the Bering Sea in the second half of ...

core  

Atmospheric emissions from the deepwater Horizon spill constrain air-water partitioning, hydrocarbon fate, and leak rate [PDF]

, 2011
The fate of deepwater releases of gas and oil mixtures is initially determined by solubility and volatility of individual hydrocarbon species; these attributes determine partitioning between air and water.
Aikin, KC, Angevine, WM, Atlas, EL, Blake, DR, Brock, CA, De Gouw, JA, Fahey, DW, Fehsenfeld, FC, Gao, RS, Holloway, JS, Lack, DA, Lueb, RA, Meinardi, S, Middlebrook, AM, Murphy, DM, Neuman, JA, Nowak, JB, Parrish, DD, Peischl, J, Perring, AE, Pollack, IB, Ravishankara, AR, Roberts, JM, Ryerson, TB, Schwarz, JP, Spackman, JR, Stark, H, Warneke, C, Watts, LA   +28 more
core   +1 more source