搜索结果: 1-15 共查到“物理学 measurement”相关记录157条 . 查询时间(0.312 秒)
When the Large Hadron Collider (LHC) is operating, it produces more than one billion proton–proton interactions every second. But exactly how many take place in the LHC experiments? Critical to every ...
HIGH THROUGHPUT SYSTEM FOR PLANT HEIGHT AND HYPERSPECTRAL MEASUREMENT
Height measurement hyperspectral measurement stereo vision grating dispersion high throughput, phenotypes
2018/5/16
Hyperspectral and three-dimensional measurement can obtain the intrinsic physicochemical properties and external geometrical characteristics of objects, respectively. Currently, a variety of sensors a...
Emerging understanding and measurement of plasma volume expansion in pregnancy
inflammation iron obesity obstetric outcomes plasma volume pregnancy
2018/11/21
Plasma volume expansion is an important component of a successful pregnancy. The failure of maternal plasma volume expansion has been implicated in adverse obstetric outcomes such as pre-eclampsia, fe...
JILA’s 3-D Quantum Gas Atomic Clock Offers New Dimensions in Measurement（图）
JILA 3-D Quantum Gas Atomic Clock New Dimensions Measurement
2017/10/25
JILA physicists have created an entirely new design for an atomic clock, in which strontium atoms are packed into a tiny three-dimensional (3-D) cube at 1,000 times the density of previous one-dimensi...
长江大学物理科学与技术学院力学课件第一章 Measurement
长江大学 物理科学与技术学院 力学 课件 第一章 Measurement
2017/2/23
长江大学物理科学与技术学院力学课件第一章 Measurement。
Experimental measurement-device-independent quantum key distribution
measurement-device-independent quantum key distribution
2016/1/23
Quantum key distribution is proven to offer unconditional security in communication between two remote users with ideal source and detection. Unfortunately, ideal devices never exist in practice and d...
Quantum limited measurement of magnetic field gradient with entangled atoms
Quantum limited measurement magnetic field gradient entangled atoms
2016/1/23
We propose a method to detect the amplitude gradient of a microwave field by using a pair of entangled two-component Bose-Einstein condensates. We consider the two spatially separated condensates to b...
Measurement-device-independent Quantum Key Distribution with Uncharacterized Qubit Sources
Measurement-device-independent Quantum Key Distribution Uncharacterized Qubit Sources
2016/1/23
Measurement-device-independent quantum key distribution (MDIQKD) is proposed to be secure against any possible detection attacks. The security of the original proposal relies on the assumption that th...
Measurement-Device-Independent Quantum Key Distribution over 200 km
Measurement-Device-Independent Quantum Key Distribution
2016/1/22
Measurement-device-independent quantum key distribution (MDIQKD) protocol is immune to all attacks on detection and guarantees the information-theoretical security even with imperfect single-photon de...
Implementation of a Measurement-Device-Independent Entanglement Witness
Measurement-Device-Independent Entanglement Witness
2016/1/22
Entanglement, the essential resource in quantum information processing, should be witnessed in many tasks such as quantum computing and quantum communication. The conventional entanglement witness met...
Physicists conduct most precise measurement yet of interaction between atoms and carbon surfaces
Physicists most precise measurement atoms and carbon surfaces
2015/6/18
Physicists at the University of Washington have conducted the most precise and controlled measurements yet of the interaction between the atoms and molecules that comprise air and the type of carbon s...
High-precision measurement of the thermal exponent for the three-dimensional XY universality class
Accuracy of measurement measurement superfluids lipase
2014/12/20
Simulation results are reported for the critical point of the two-component ϕ4 field theory. The correlation-length exponent is measured to high precision with the result ν=0.6717(3). This value ...
Measurement of the Parity Violating Asymmetry in Elastic Electron Scattering off 208Pb
Jefferson Lab parity violating electron scattering scattering asymmetry neutron skin thickness
2014/11/20
The Lead Radius Experiment (PREX) was carried out in order to provide a model independent measurement of the RMS radius √ < r2 >of the neutron distribution in the 208Pb nucleus. The parity-violating s...
A Measurement of the W/Z Cross Section Ratio as a Function of Hadronic Activity with the ATLAS Detector
ATLAS electroweak bosons lepton+jets pqcd w/z ratio
2014/11/20
Hadronic collisions at the LHC at CERN probe particle interactions at the highest energy scale of any experiment to date. We present a research program measuring Rjet = &sigmaWBR(W&rarr&mu&nu) / (&sig...
Rare Decays in BaBar: Search for Decays of the Neutral B Meson into Two Leptons and Measurement of CP Asymmetry in Inclusive Radiative Decays of the B Meson into a Strange-quark System
BaBar Leptons Rare decays Strange-quark system
2014/11/20
Rare Decays in BaBar: Search for Decays of the Neutral B Meson into Two Leptons and Measurement of CP Asymmetry in Inclusive Radiative Decays of the B Meson into a Strange-quark System.