Results 71 to 80 of about 62,613 (263)

Completeness of Normal Rational Curves [PDF]

open access: yesJournal of Algebraic Combinatorics, 1992
A \(k\)-arc in \(\mathrm{PG}(n,q)\), the \(n\)-dimensional projective space over \(\mathrm{GF}(q)\), is a set \(K\) of \(k\) points of \(\mathrm{PG}(n,q)\), \(k\geq n+1\), with the property that no \(n+1\) points of \(K\) lie in a hyperplane. A normal rational curve in \(\mathrm{PG}(n,q)\), \(2\leq n\leq q-2\), is a \((q+1)\)-arc that is projectively ...
openaire   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

On special rational curves in Grassmannians [PDF]

open access: yesArchiv der Mathematik, 2007
We characterize, among all rational curves in the grassmannian G(d, 2d), those which are GL(2d)-equivalent to the canonical morphism induced by the Morita equivalence C-Mod -> M(d)-Mod.
openaire   +2 more sources

Neural-Network-Based Curve Fitting Using Totally Positive Rational Bases

open access: yesMathematics, 2020
This paper proposes a method for learning the process of curve fitting through a general class of totally positive rational bases. The approximation is achieved by finding suitable weights and control points to fit the given set of data points using a ...
Rocio Gonzalez-Diaz   +3 more
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

Rational and singular points of a family of curves

open access: yesResults in Applied Mathematics
This paper explores the properties of a family of absolutely irreducible projective plane curves, denoted Ca,b, which are defined over a finite field Fm of characteristic 2.
M.C. Rodríguez-Palánquex
doaj   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

Bounded Rational Points on Curves [PDF]

open access: yesInternational Mathematics Research Notices, 2014
We establish the sharp estimate <
openaire   +2 more sources

Long‐term hippocampal alterations and cognitive impairment in a murine model of surgical sepsis

open access: yesFEBS Open Bio, EarlyView.
Using a mouse model of surgical sepsis, we tested long‐term memory and analyzed the transcriptome of single cells isolated from the hippocampus. Survivor mice showed worse memory, loss of certain brain cell subpopulations, and abnormal immune cell activity—suggesting that post‐sepsis brain alterations may be linked to cognitive deficits.
Dong Seong Cho   +4 more
wiley   +1 more source

Data fitting by G1 rational cubic Bézier curves using harmony search

open access: yesEgyptian Informatics Journal, 2015
A metaheuristic algorithm, called Harmony Search (HS) is implemented for data fitting by rational cubic Bézier curves. HS is a derivative-free real parameter optimization algorithm, and draws an inspiration from the musical improvisation process of ...
Najihah Mohamed   +2 more
doaj   +1 more source

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