Results 71 to 80 of about 6,424,880 (277)

Optimization and Design of Wideband Antenna Based on Q Factor

open access: yesInternational Journal of Antennas and Propagation, 2015
A wideband antenna is designed based on Q factor in this paper. Firstly, the volume-surface integral equations (VSIEs) and self-adaptive differential evolution algorithm (DEA) are introduced as the basic theories to optimize antennas.
Han Liu   +3 more
doaj   +1 more source

A review on quality factor enhanced on-chip microwave planar resonators

open access: yesEngineering Science and Technology, an International Journal, 2017
This paper reviews microwave on-chip resonators with emphasis on quality-factor (Q-factor), and techniques enhancing Q-factor. The review discusses both planar microstrip and waveguide structures, with the integration of the latter emerging as a ...
Olebogeng Bone Kobe   +3 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

The development and validation of a shortened version of the Eating Disorder Examination Questionnaire (EDE-Q) [PDF]

open access: yes, 2014
Aims: The aim of this study was to develop and validate a short version of the Eating Disorder Examination Questionnaire (EDE-Q) for sessional outcome assessment, which is sensitive to clinical change. Method: A principal component analysis was conducted
Gideon, N
core  

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

The Q theory of investment under unit root tests [PDF]

open access: yes, 1992
We test a q investment model for Belgium using a multivariate cointegration approach. The introduccion of the degree of capacity utilization duc, in addition to investment and average q, is necessary to determine the cointegration space. This support the
Licandro, Omar, Croix, David de la
core  

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Time‐restricted feeding prior to Mycobacterium tuberculosis infection reduces tissue CD4+ T cells with limited impact on bacterial clearance

open access: yesFEBS Open Bio, EarlyView.
Time‐restricted feeding (TRF) in mice increased liver fatty acid oxidation and decreased fatty acid biosynthesis. These alterations persisted when TRF was discontinued and the host was infected with Mycobacterium tuberculosis. Pre‐exposure to TRF did not alter tissue (lung and spleen) mycobacterial burden but significantly reduced CD3+ T cells in lungs
Ashish Gupta   +7 more
wiley   +1 more source

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

open access: yesFEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana   +5 more
wiley   +1 more source

Performance evaluation of damping filters of the third order

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2015
Expressions for an assessment of efficiency of the damping filters of the third order in power networks are received. On the basis of these expressions graphic dependences at various parameters of filters are given.
G. N. Tsitsikyan   +2 more
doaj  

Home - About - Disclaimer - Privacy