Results 81 to 90 of about 28,333,951 (294)

FOURIER ANALYSIS IN SPACES OF SHIFTS

open access: yesJournal of Mathematical Sciences, 2022
In this paper, we develop a continual analog of decomposition over orthogonal bases in spaces generated by equidistant shifts of a single function. By doing so, we obtain an explicit expression for best approximation by spaces of shifts in $L_2(\mathbb{R})$.
openaire   +3 more sources

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Fourier Analysis on Coset Spaces

open access: yesRocky Mountain Journal of Mathematics, 1998
Let \(G\) be a locally compact group with a closed subgroup \(H\). In this paper natural analogs are defined and studied of the Fourier and Fourier-Stieltjes algebras for the homogeneous space \(G/H\) of left cosets of \(H\) in \(G\). In particular, for a compact subgroup \(K\) it is shown that the Fourier algebra \(A(G/K)\) is a regular Banach algebra
openaire   +3 more sources

Optimal Spacing in Regression Analysis

open access: yesThe Annals of Mathematical Statistics, 1959
When a response (or dependent) variable $y$ can be observed for a continuous range of values of the independent variable $x$, which is at the control of the experimenter, the question arises as to how a given number of observations should be spaced.
David, H. A., Arens, Beverly E.
openaire   +3 more sources

An Educational Introduction to ITAR and EAR Regarding Pressure Suits and Space Suits

open access: yes
Immediate accessThis item is made available by the University of Arizona Center for Human Space Exploration (CHaSE) with support from the University of Arizona Libraries.
Tresch, Trent
core   +4 more sources

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Comprehensive magnetogram portal and archive service system (COMPASS): an IIIF-based portal for over 1.4 million historical magnetogram records

open access: yesEarth, Planets and Space
Historical magnetograms are fundamental records for space weather, space climate, and geomagnetism. However, they have rarely been published in searchable or viewable formats, posing a significant barrier to their use by the scientific community.
Shun Imajo   +7 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

Piantanida Near Space Balloon Gondola Engineered Drawing and Details

open access: yes
Immediate accessThis item is made available by the University of Arizona Center for Human Space Exploration (CHaSE) with support from the University of Arizona Libraries.
Tresch, Trent
core   +2 more sources

Measuring space radiation shielding effectiveness

open access: yesEPJ Web of Conferences, 2017
Passive radiation shielding is one strategy to mitigate the problem of space radiation exposure. While space vehicles are constructed largely of aluminum, polyethylene has been demonstrated to have superior shielding characteristics for both galactic ...
Bahadori Amir   +4 more
doaj   +1 more source

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