Results 101 to 110 of about 128,614 (280)

The flatness problem and $\Lambda$

, 2005
By way of a complete integration of the Friedmann equations, in terms of observables, it is shown that for the cosmological constant $\Lambda > 0$ there exist non-flat FLRW models for which the total density parameter $\Omega$ remains $\sim 1$ throughout
A. G. Riess, J. Ehlers, J. Wainwright, J. A. Peacock, Kayll Lake, M. S. Madsen, R. Stabell, R. H. Dicke   +7 more
core   +1 more source

Rapid screening of staphylokinase protein variants using an unpurified cell‐free expression system

FEBS Open Bio, EarlyView.
An unpurified cell‐free protein synthesis (CFPS) platform enables rapid functional screening of staphylokinase variants. Direct plasminogen‐activation assays performed in microplate format provide real‐time activity readouts, allowing rapid identification and ranking of variants with improved or reduced fibrinolytic activity without protein ...
Maria Tomková, Veronika Hovanová, Jiri Damborsky, Erik Sedlák   +3 more
wiley   +1 more source

Cluster analysis of strip flatness characteristics for ultra-wide cold rolling mills

工程科学学报, 2016
In order to master the flatness characteristics of strips with different widths for ultra-wide tandem cold rolling mills, taking the sufficient flatness detection data of 1900 mm strips from 2180 mm cold rolling mills as a research object and considering
LI Hong-bo, BAO Ren-ren, ZHANG Jie, JIA Sheng-hui, CHU Yu-gang, LIU Hai-jun   +5 more
doaj   +1 more source

Relative Flatness and Flatness of Implicit Systems

SIAM Journal on Control and Optimization, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pereira da Silva, Paulo Sérgio, Corrêa Filho, Carlos   +1 more
openaire   +2 more sources

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 more
wiley   +1 more source

Generation of Flat Optical Frequency Comb Using Cascaded Electro-Optic Modulators

Photonics
Optical frequency combs have been widely used in spectrum analysis, coherent optical communication, and accurate distance measurement. We propose a straightforward method to improve the flatness of optical frequency combs. First, we derived the output of
Wei Lin, Bowen Zhu, Keqi Cao, Hang Yu, Xinyan Zhang, Jia Chen, Yu Liu   +6 more
doaj   +1 more source

Study on Amplitude and Flatness Characteristics of Elastic Thin Strip under Fluid–Structure Interaction Vibration Excited by Unsteady Airflow

Metals, 2019
Based on unsteady airflow excitation and elastic thin strip vibration theory, a SI-FLAT flatness meter was taken as the research object, and an amplitude−residual stress simulation analysis model of the cold rolling strip under aerodynamic loads ...
Hongbo Li, Guomin Han, Jingbo Yang, Nong Li, Jie Zhang   +4 more
doaj   +1 more source

Network Localization of Fatigue in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Fatigue is among the most common symptoms and one of the main factors determining the quality of life in multiple sclerosis (MS). However, the neurobiological mechanisms underlying fatigue are not fully understood. Here we studied lesion locations and their connections in individuals with MS, aiming to identify brain networks ...
Olli Likitalo, Jaakko Kungshamn, Albert Bellmunt‐Gil, Silvia Tommasin, Abhineet Ojha, Matias Viitala, Juho Aaltonen, Jyrki Lötjönen, Juha Koikkalainen, Pauli Ylikotila, Patrizia Pantano, Merja Soilu‐Hänninen, Juho Joutsa   +12 more
wiley   +1 more source

Influence of the probing definition on the flatness measurement

International Journal of Metrology and Quality Engineering, 2018
The quality control of mechanical parts is generally performed on a coordinate measuring machine (CMM). The choice of the number of points to be sampled, their distributions and their positions on the surface, as well as the association criterion remains
Moulai-khatir Djezouli, Pairel Eric, Favreliere Hugues   +2 more
doaj   +1 more source

Second-order amplitudes in loop quantum gravity

, 2009
We explore some second-order amplitudes in loop quantum gravity. In particular, we compute some second-order contributions to diagonal components of the graviton propagator in the large distance limit, using the old version of the Barrett-Crane vertex ...
Alesci E Bianchi E Rovelli C, Ashtekar A, Ashtekar A, Baez J C, Barrett J W Dowdall R J Fairbairn W J Gomes H Hellmann F, Bianchi E, Bonzom V, Carlo Rovelli, Colosi D, Conrady F, Conrady F Freidel L, Davide Mamone, Freidel L, Freidel L, Livine E R, Oeckl R, Oriti D, Pereira R, Perez A, Perini C Rovelli C Speziale S, Reisenberger M, Reisenberger M, Rovelli C, Rovelli C, Rovelli C, Rovelli C, Speziale S   +26 more
core   +3 more sources