Results 61 to 70 of about 51,689 (261)

Cobalt Single‐Atom Nanozyme for Enhanced Intestinal Radioprotection and Tumor Radiosensitization via Bidirectional ROS Modulation

Advanced Science, EarlyView.
Orally administered, pH‐responsive Co‐SAN exerts dual functions: in the alkaline intestinal milieu, it scavenges reactive oxygen species (ROS) and suppresses the PI3K/AKT pathway and NETs formation, thus providing radioprotection; whereas in the acidic tumor microenvironment, it generates ROS and alleviates hypoxia, thereby enhancing radiosensitization.
Shengqi Yin, Junjie Li, Yishu Zou, Yang Liu, Yilin Zheng, Lu Yu, Wanying Zheng, Yajun Zou, Zehui Zhang, Tao Li, Peiqun Yin, Jianlin Zhang, Yuen Wu, Yi Ding   +13 more
wiley   +1 more source

A mobile localization method based on a robust extend Kalman filter and improved M-estimation in Internet of things

International Journal of Distributed Sensor Networks, 2020
As the key technology for Internet of things, wireless sensor networks have received more attentions in recent years. Mobile localization is one of the significant topics in wireless sensor networks.
Nan Hu, Chuan Lin, Fangjun Luan, Chengdong Wu, Qi Song, Li Chen   +5 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Determination of Sight Distance on a Combined Crest and Circular Curve in a Three Dimensional Space

International Journal of Transportation Science and Technology, 2012
The sight distance (SD) on a two-dimensional (2-d) curve, namely, a vertical curve or a horizontal curve, has been well understood and documented for roadway geometric design in literature.
Chiu Liu, PhD, PE, PTOE, Zhongren Wang, PhD, PE, TE   +1 more
doaj   +1 more source

Incorporating Uncertainty into the Estimation of the Passing Sight Distance Requirements

Computer-Aided Civil and Infrastructure Engineering, 2007
Passing sight distance (PSD) is provided to ensure the safety of passing maneuvers on 2-lane, 2-way roads. Many random variables determine the minimum length required for a safe passing maneuver. Current PSD design practices replace these random variables by single-value means in the calculation process, disregarding their inherent variations, which ...
John El Khoury, Antoine G. Hobeika
openaire   +2 more sources

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Indoor Smartphone Localization Based on LOS and NLOS Identification

Sensors, 2018
Accurate localization technology is essential for providing location-based services. Global positioning system (GPS) is a typical localization technology that has been used in various fields.
Hyeon Jeong Jo, Seungku Kim
doaj   +1 more source

Redesigning Interlayers for Anode‐Free Batteries: Harnessing Continuity and Metal Inventory

Advanced Energy Materials, EarlyView.
Interlayers for anode‐free batteries must provide continuous interfacial coverage while remaining thin enough to preserve the finite cathode‐derived active‐metal inventory. This Perspective couples thin‐film closure with stoichiometric active‐metal consumption to reveal practical design windows across chemistry, substrate roughness, cathode loading ...
Rosalía Cid, Lorenzo Fallarino
wiley   +1 more source

Influence of Driver Eye Height and Obstacle Height on Sight Distance

Romanian Journal of Transport Infrastructure
Road traffic safety is a series of methods and measures aimed to reducing the risk of injury for road users.
Dragoș Petcu Mihai, Claudia Petcu, Carmen Răcănel   +2 more
doaj   +1 more source

Deriving Sight Distance on a Compound Sag and Circular Curve in a Three Dimensional Space

International Journal of Transportation Science and Technology, 2012
Insufficient roadway sight distance (SD) may become a contribution factor to traffic collisions or other unsafe traffic maneuvers. The sight distance (SD) for a two-dimensional (2-d) sag or circular curve has been addressed in detail in various traffic ...
Chiu Liu, PhD, PE, PTOE, Zhongren Wang, PhD, PE, TE   +1 more
doaj   +1 more source