Results 71 to 80 of about 1,411,743 (318)

Estimating the Theoretical and Empirical Probability Coefficients of Oil Pipeline Transport Infrastructure Failure Modes in Nigeria’s Coastal Ecosystem: Panacea for Non Optimal Deployment of Pipeline Safety and Security Management Systems

open access: yesLogi, 2018
Failure of oil pipeline transport infrastructure in Nigeria’s coastal ecosystem has continued to pose serious environmental problems with consequent economic effects.
Nwokedi Theophilus Chinonyerem   +1 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Computation of Real Normal Modes from Complex Eigenvectors

open access: yes, 2006
A method for the computation of real normal modes from complex eigenvectors is described in this paper. The method is based on the exact eigensystem equations, which commonly cannot be used due the problem of modal truncation.
Füllekrug, Ulrich
core  

On the experience and evidence about mixing modes of data collection in large-scale surveys where the web is used as one of the modes in data collection [PDF]

open access: yes, 2011
This paper presents experience and evidence, from international sources, of the effects on survey quality of the use of mixed modes in data collection, where the web is used as one of the modes.
Gumy, Julia M   +3 more
core  

An efficient k-modes algorithm for clustering categorical datasets

open access: yes, 2022
Mining clusters from data is an important endeavor in many applications. The k-means method is a popular, efficient, and distribution-free approach for clustering numerical-valued data, but does not apply for categorical-valued observations.
Maitra, Ranjan, Dorman, Karin S.
core  

Method of proportioning the cement-water ratio of steam-cured concrete

open access: yesИнженерно-строительный журнал, 2019
The article presents the results of experimental studies that made it possible to substantiate the calculated dependences of the steam-cured concrete strength and the required values of the cement-water ratio (C/W) to ensure the specified strength values.
Leonid Dvorkin, Vadim Zhitkovsky
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Difference limen for the Q-factor of room modes

open access: yes, 2003
A subjective test study was carried out in order to identify the perceptibility of changes in the Q-factor of room modes. The experimental technique concentrates on the identification of difference limen for three levels of Q-factor referring to modes in
Fazenda, Bruno   +2 more
core  

Simulation Study of Ballooning Modes in the Large Helical Device

open access: yes, 2010
The magnetohydrodynamic (MHD) simulation code MHD Infrastructure for Plasma Simulation (MIPS) was benchmarked on ballooning instability in the Large Helical Device (LHD) plasma.
SATO, Masahiko   +7 more
core   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy