Results 91 to 100 of about 332,750 (308)

Covalent Bonds Reinforced Strength and Modulus of Heterocyclic Aramid Fiber by Interfacial Aminated‐MXene Nanosheets

Advanced Science, EarlyView.
We demonstrate the covalent bonds strategy to enhance the mechanical property of PBIA fiber by using interfacial MXene‐NH2 nanosheets. The MXene‐NH2 nanosheets with reactive amino sites that can serve as nucleating agents and chain anchors to enhance orientation, crystallinity and interchain interaction of PBIA fiber via strong interfacial amido ...
Boyuan Chen, Hansheng Liu, Weiheng Kong, Ke Han, Jing Fang, Xingjiang Wu, Jianhong Xu, Hao Li   +7 more
wiley   +1 more source

Reinventing College Physics for Biologists: Explicating an epistemological curriculum

, 2008
The University of Maryland Physics Education Research Group (UMd-PERG) carried out a five-year research project to rethink, observe, and reform introductory algebra-based (college) physics.
David Hammer, Edward F. Redish, Giroux H. A., Goertzen R. M., Hammer D., Hatano G., Mazur E., McCloskey Michael, McDermott L., Redish E. F., Redish E. F., Schachter D., Schoenfeld A. H., Strike K. A., Varmus H., Wittmann M.   +15 more
core   +1 more source

On an Impact Testing Machine of Drop Hammer Type

journal of the Japan Society for Testing Materials, 1961
In order to research on the behaviors of destruction of carbon steel forgings by impact bending, we designed an impact testing machine of drop hammer type. The total height of this testing machine is about 5m. The weights of the used drop hammers are 12.5, 25 and 50kg respectively. The maximum distance from the position of test piece to the drop hammer
Sadatoshi INADA, Koichi AKIZONO, Koji HANAOKA   +2 more
openaire   +2 more sources

Precipitation‐Modulated Harmonic Architectures Enable Superior Strength–Ductility Synergy from Cryogenic to Elevated Temperatures in Nanostructured Alloys

Advanced Science, EarlyView.
Precipitation‐modulated recrystallization enables a programmable bimodal harmonic architecture in a high‐entropy alloy, delivering 1–2 GPa yield strength with >10% ductility from −196 °C to 700 °C. The resulting broad‐temperature robustness arises from the synergy of dual‐mode nanoprecipitation, harmonic core–shell topology, and temperature‐adaptive ...
Wei Li, Liangyin Xiong, Mengchao Niu, Junhua Luan, Wei Wang, Zengbao Jiao   +5 more
wiley   +1 more source

Multiscale Architecture and Mechanics of the Cell Nucleus: Implications for Disease, Bioengineering and Nanomedicine

Advanced Science, EarlyView.
Nuclear mechanical properties are inherently scale‐dependent, arising from a hierarchical architecture that spans DNA, chromatin, the nuclear envelope, and condensates. Experimental techniques and theoretical models are integrated into a cohesive multiscale framework linking nanoscale structural features to organelle‐level mechanical behavior.
Xinran Liu, Xin Chen, Qingyang Zhao, Weikang Tan, Lingrui Zhu, Kin Liao, Vincent Chan, Nicolae Goga, Winfred O. Larkotey, Yang Li, Yinghui Shi, Wenya Shu, Lin Wang, Weiqing Wang, Tian Jian Lu, Yulong Han   +15 more
wiley   +1 more source

ROLLER COMPACTED CONCRETE RCC UNTUK BANGUNAN BENDUNGAN

Civil Engineering Dimension, 2003
The using of Roller Compacted Concrete (RCC) is one of many alternatives that can be used to decrease dam construction cost. Many Roller Compacted Concrete (RCC) composition has been developed to achieve maximum compressive strength.
Handoko Sugiharto, Henry James, Deddy Hardianto, Ruslan Djajadi   +3 more
doaj  

COMPARATIVE ANALYSIS AND EVALUATION OF THE CONVERSION FORMULA FOR REBOUND NUMBER OF SCHMIDT HAMMER TEST AND UNCONFINED COMPRESSIVE STRENGTH TEST – CASE STUDY: ANDESITE ROCK SLOPE IN GRAHA PUSPA, LEMBANG FAULT

Rudarsko-geološko-naftni Zbornik
The Unconfined Compressive Strength (UCS) test is one of the most common methods for determining the rock material strength value. However, the size and complexity of the instrument do not allow UCS testing to be carried out in the field.
Antonina Pri Martireni, Wira Cakrabuana, Koko Hermawan, Khori Sugianti, Arifan Jaya Syahbana, Sunarya Wibawa, Eko Soebowo, Adrin Tohari, Hasan Tri Atmojo   +8 more
doaj   +1 more source

The scaling limit of the interface of the continuous-space symbiotic branching model

, 2016
The continuous-space symbiotic branching model describes the evolution of two interacting populations that can reproduce locally only in the simultaneous presence of each other.
Blath, Jochen, Hammer, Matthias, Ortgiese, Marcel   +2 more
core   +1 more source

Prediction of the Physical Properties of a Structural Member by the Impact Hammer Test. [PDF]

Sensors (Basel), 2022
Lee ET, Hong YS, Eun HC.
europepmc   +1 more source

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source