Results 71 to 80 of about 3,284 (259)

Analysis and Evaluation of Trapezoidal Speed Humps and Their Impact on the Driver

The Baltic Journal of Road and Bridge Engineering, 2018
Operating speed is one of the leading safety risk factors, which increases accident risk and influences accident severity. Speeding is the leading cause of accidents and the most common road traffic offense.
Vilma Jasiūnienė, Gintarė Pociūtė, Audrius Vaitkus, Kornelija Ratkevičiūtė, Algis Pakalnis   +4 more
doaj   +1 more source

Multi‐Scale Structural Effects of External Electrical Fields of Melt Tracks in Laser Powder Bed Fusion

Advanced Science, EarlyView.
Laser material processing is a promising technique for fabricating metal structures. Here, external electric field (EFs) assisted laser processing of metallic powders are investigated. EFs affect the melt tracks through changes in their stability and influence the grain structure in conjunction with laser intensity distribution methods. The EF‐assisted
Ankit Das, Shuichiro Hayashi, Craig B. Arnold   +2 more
wiley   +1 more source

Transforming Grain‐Boundary Brittle Precipitates to Ductility Pathways in Complex Concentrated Alloy

Advanced Science, EarlyView.
By engineering graded BCC/L12 interfaces, brittle precipitates in a complex concentrated alloy enable sequential deformation, realizing gigapascal strength with >20% elongation to solve the strength‐ductility trade‐off. ABSTRACT Conventional wisdom holds that hard grain‐boundary (GB) precipitates embrittle structural alloys by acting as crack ...
Zhixin Li, Xiao‐Tong Li, Zhaoqi Chen, Yushan Geng, Hao Gong, Sijia Hu, Wenli Song, Wanshun Xia, Chuanzheng Li, Linfa Peng, Yue Fan, Pengfei Guan, Bo Zhang, Weihua Wang, Yong Yang   +14 more
wiley   +1 more source

Microscale Mapping of Fiber Strain and Damage in Composite Wrinkled Laminates Using Computed Tomography Assisted Wide‐Angle X‐Ray Scattering

Advanced Science, EarlyView.
This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong, James Trevarthen, Igor Dolbnya, Wadwan Singhapong, Nicholas Pilato, Richard Butler, Jiraphant Srisuriyachot, Alexander J. G. Lunt   +7 more
wiley   +1 more source

Single‐Cell Transcriptomic Atlases of Camels and Cattle Unravel Molecular Evolution of Digestive and Metabolic Systems

Advanced Science, EarlyView.
We generated multi‐tissue single‐cell transcriptomic atlases of camels and cattle, uncovering conserved and lineage‐specific cellular features across digestive and metabolic systems. Cross‐species comparisons revealed the evolutionary origin of the camel glandular sac and identified novel cell populations linked to physiological specialization ...
Tao Shi, Huiquan Shan, Haoping Wang, Xi Guo, Houcheng Li, Bo Han, Senlin Zhu, Fei Wang, Guanghui Tan, Zhannur Niyazbekova, Jilong Ren, Yaqi Zhou, Qi Zhang, Weijie Zheng, Minghui Jia, Ao Zhang, Xuesha Cao, Huizeng Sun, Dongxiao Sun, Lingzhao Fang, Yi Zheng, Xihong Wang, Yu Jiang   +22 more
wiley   +1 more source

Research on the Comparison of the Flow Evolution Mechanisms of a Water-Jet Pump Between Valley and Peak Conditions

Journal of Marine Science and Engineering
The pump hump significantly influences the vibration and operational stability of pumps. During the development of the mixed-flow waterjet pump, our team found that the pump performance curve had a hump phenomenon and the platform had vibration, so it ...
Min Liu, Yun Long, Yingying Zheng, Jinqing Zhong, Hong Yin   +4 more
doaj   +1 more source

Characteristics of rotating instability in a centrifugal blower with shrouded impeller

Nihon Kikai Gakkai ronbunshu, 2014
The Rotating instability, abbreviated to RI, in a centrifugal blower with shrouded impeller is investigated by experiments and CFD analyses. The RI occurs in a partial-flow operation of the blower prior to stall with mild fluctuations of impeller ...
Yasuyuki FUKUDA, Yusuke TAKEYAMA, Yutaka OHTA   +2 more
doaj   +1 more source

Nitrogen‐Boosted H2O2 Production of Arginine‐Polyphenol Nanozyme Drives Oxidative Eustress for Hair Regeneration

Advanced Science, EarlyView.
PEA nanoenzymes are assembled from L‐arginine and EGCG. The nitrogen element in arginine enhances the thermodynamic feasibility of H2O2 production through PEA's oxygen reduction catalysis, enabling nitrogen‐dependent H2O2 release. Intradermal delivery of PEA via microneedles promotes efficient H2O2 synthesis, thereby stimulating regrowth in telogen ...
Yifei Wang, Yaojia Yang, Aoxue Wang, Chen Shen, Shenliang Tan, Changsheng Liu, Yuzheng Zhao, Xue Qu   +7 more
wiley   +1 more source

Low‐Voltage and High‐k Properties of Bilayer HZO Capacitors at the Morphotropic Phase Boundary for Next‐Generation Memory Applications

Advanced Science, EarlyView.
The HfxZr1‐xO2‐based ferroelectric/antiferroelectric bilayer capacitor exhibits morphotropic‐phase‐boundary behavior with a high dielectric constant (∼52) at 2 V. Phase engineering stabilizes o/t‐phase coexistence and suppresses m‐phase formation, enabling capacitance enhancement and self‐optimization under cycling for scalable low‐voltage, high‐κ ...
Junseok Kim, Hyeonjung Park, Changwoo Han, Huiseong Shin, Myeongjae Choi, Changhwan Shin   +5 more
wiley   +1 more source

Rail skates for fixing rolling stock on the station tracks. Ground tests

Вестник Научно-исследовательского института железнодорожного транспорта, 2016
Currently manual brake shoes on Russian railways are used to solve two main tasks: to adjust uncoupling speed at humps (hump shoes), and to fix the rolling stock on the railway tracks.
D. P. Markov, I. N. Voronin, N. P. Shipulin, V. I. Marshev, M. V. Zabavina, V. V. Guzanov, A. V. Kuminov, A. V. Sukhov   +7 more
doaj   +1 more source