Results 81 to 90 of about 2,138,397 (299)

Features of construction of acoustic reconnaissance equipment with their small overall dimensions

open access: yesRadiotekhnika, 2019
A comparative analysis of the dependence of the directivity index on frequency for a reflex microphone, an organ type microphone and a microphone array with their limited dimensions, as well as the dependence of spatial selectivity on the aperture at fixed frequencies, is carried out.
openaire   +4 more sources

Service Quality in Iranian Hospitals From Patients' Perspectives Based on the SERVQUAL Model: A Systematic Review and Meta‐Analysis

open access: yesHealth Science Reports
Background This study aimed to evaluate the service quality in Iranian hospitals from patients' perspectives based on the SERVQUAL model. Materials and Methods A thorough exploration of online electronic databases, including Scopus, PubMed, Web of ...
Tara Alizadeh   +5 more
doaj   +1 more source

Gauge-Higgs Unification at the LHC

open access: yes, 2010
Higgs boson production by the gluon fusion and its decay into two photons at the LHC are investigated in the context of the gauge-Higgs unification scenario.
Maru, Nobuhito, Okada, Nobuchika
core   +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

Measuring service quality in public and private sector university libraries of Pakistan

open access: yesPakistan Journal of Information Management & Libraries, 2016
The problem addressed in this study investigates the perceived service quality of public and private sector university libraries of Pakistan from its users' perspective.
Shafiq Ur Rehman
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

Research on Spatial Morphological Characteristics and Influencing Factors of Industrial Heritage: A Case Study of Nine Industrial Heritages in Guizhou Province

open access: yesLand
Industrial heritage, recognized as a significant aspect of historical and cultural heritage, has garnered considerable attention from scholars globally.
Boyang Zhang, Jinyu Fan, Zongsheng Huang
doaj   +1 more source

La dimensión testimonial y literaria de los reportajes de Saint-Exupéry sobre la Guerra civil española [PDF]

open access: yesÇédille: Revista de Estudios Franceses, 2017
The aim of this article is to highlight the symbolic and literary dimension of the chronicles written by Saint-Exupéry about the Spanish Civil War.
Juan Herrero Cecilia
doaj  

Two-Dimension Study of Methanol Internal-Overall Rotation in Argon Matrix

open access: yesAmerican Journal of Chemistry, 2013
In the approximation B3LYP/cc-pVTZ, the geometry of a methanol molecule surrounded by eight argon atoms has been optimized. By the independent rotation of the methyl and the hydroxyl groups at the fixed position of the C-O bond relative to the argon atoms there was obtained the two-dimensional grid of values of the internal-overall rotation energy ...
Pitsevich, G. A., Malevich, A. E.
openaire   +3 more sources

Reducing the quantum communication cost of quantum secret sharing

open access: yes, 2012
We demonstrate a new construction for perfect quantum secret sharing (QSS) schemes based on imperfect "ramp" secret sharing combined with classical encryption, in which the individual parties' shares are split into quantum and classical components ...
Fortescue, Ben, Gour, Gilad
core   +1 more source

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