Results 101 to 110 of about 1,072,283 (301)

The Off Shell $\rho$-$\omega$ Mixing in the QCD Sum Rules

, 1993
The $q^2$ dependence of the $\rho-\omega$ mixing amplitude is analyzed with the use of the QCD sum rules and the dispersion relation. Going off shell the mixing decreases, changes sign at $q^2 \simeq 0.4 m_{\rho}^2 > 0$ and is negative in the space like ...
C. A. Dominguez, C. Adami, E. M. Henley, E. M. Henley, G. A. Miller, G. A. Miller, G. A. Miller, G. Launer, J. A. Nolen, Jr., J. Gasser, J. Gasser, J. Piekarewicz, L. D. Knutson, L. D. Knutson, M. A. Shifman, M. A. Shifman, M. A. Shifman, M. Gell Mann, N. Paver, P. C. McNamee, P. G. Blunden, R. Abegg, R. Abegg, R. P. Feynman, S. A. Coon, S. A. Coon, S. Narison, S. Narison, S. Narison, S. Shlomo, T. Goldman, T. Hatsuda, T. Hatsuda, T. Schaefer, V. Gimenez   +34 more
core   +1 more source

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

Three-Dimensional Numerical Simulation of Rock Breaking by the Tipped Hob Cutter Based on Explicit Finite Element

IEEE Access, 2019
As an important equipment for wellbore construction, the raise boring machine (RBM) has been widely used in subway tunnels and mine construction projects.
Xiukun Hu, Changlong Du, Songyong Liu, Hao Tan, Zhiqiang Liu   +4 more
doaj   +1 more source

A quark model analysis of the charge symmetry breaking in nuclear force

, 2003
In order to investigate the charge symmetry breaking (CSB) in the short range part of the nuclear force, we calculate the difference of the masses of the neutron and the proton, $\Delta {\rm M}$, the difference of the scattering lengths of the p-p and n ...
A. Faessler, A. Faessler, A. Quenzer, A.W. Thomas, B. Holzenkamp, C.G. Callan, Jr., C.G. Callan, Jr., C.W. Kao, E.V. Shuryak, E.V. Shuryak, G. ’t Hooft, G.A. Miller, G.A. Miller, G.A. Miller, J.A. Nolen, K. Bräuer, K. Bräuer, K. Okamoto, K. Shimizu, L.D. Knutson, L.M. Barkov, M. Chemtob, M. Oka, M. Oka, M. Oka, M. Oka, M. Oka, M.A. Shifman, M.J. Iqbal, N. Isgur, N.I. Kochelev, R. Abegg, S. Nakamura, S. Takeuchi, S. Takeuchi, S. Takeuchi, S.A. Coon, T. Goldman, T. Goldman, T. Goldman, T. Goldman, T. Goldman, U. van Kolck, U. van Kolck   +43 more
core   +1 more source

An Inkjet‐Printed Platinum‐Based Temperature Sensing Element on Polyimide Substrates

Advanced Engineering Materials, EarlyView.
An inkjet‐printed, meander‐structured, nanoparticle platinum‐based resistive temperature sensors on polyimide substrates are demonstrated as proof‐of‐concept. Optimized sintering at 250°C enables stable conductive structures. The Pt100‐ and Pt1000‐type sensors exhibit linear resistance–temperature characteristics with stable TCR in the 20°C–80°C range,
Shawon Alam, Thomas Kister, Alexander Scholz, Sophie Sauva, Makara Lay, Tobias Kraus, Jasmin Aghassi‐Hagmann   +6 more
wiley   +1 more source

Rock Breaking by Conical Pick Assisted with High Pressure Water Jet

Advances in Mechanical Engineering, 2014
In the process of hard rock breaking, the conical pick bears great cutting force and wear, and the cutting efficiency is lower. Thus different combination ways of water jet and conical pick were proposed to solve this issue; for instance, water jet ...
Liu Songyong, Chen Junfeng, Liu Xiaohui
doaj   +1 more source

A high-throughput phenotyping method for sugarcane rind penetrometer resistance and breaking force characterization by near-infrared spectroscopy. [PDF]

Plant Methods, 2023
Shen Y, Adnan M, Ma F, Kong L, Wang M, Jiang F, Hu Q, Yao W, Zhou Y, Zhang M, Huang J.   +10 more
europepmc   +1 more source

Breaking wave forces on piles

, 1991
Frequent use of pile-supported coastal and offshore structures makes the study cf wave loading on piles of significant practical importance. The interaction between non-breaking waves and vertical cylinders which pierce the surface has received much attention.
openaire   +2 more sources

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

Evaluation of Breaking Force of Different Suture Materials Used in Dentistry: An In Vitro Mechanical Comparison. [PDF]

Materials (Basel), 2022
Manfredini M, Ferrario S, Beretta P, Farronato D, Poli PP.   +4 more
europepmc   +1 more source