Results 81 to 90 of about 1,424,186 (337)

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

open access: yesFEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada   +5 more
wiley   +1 more source

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

From oscillatory integrals to complete exponential sums [PDF]

open access: yes, 2011
In \cite{PS-I}, Phong and Stein establish a sharp and stable bound for (one dimensional) scalar oscillatory integrals with a polynomial phase $\phi$ in terms of root clusters of the derivative $\phi'$.
Wright, James
core   +1 more source

The Hybrid Power Mean of Sixth Gauss Sums and the Two-Term Exponential Sums

open access: yesJournal of Applied Mathematics
The principal aim of this paper is to analyze the hybrid power mean value of sixth Gauss sums and two-term exponential sums. It will use various analytic methods and elementary methods to develop unique identities for these types of sums.
Xuan Wang
doaj   +1 more source

Two New Classes of Codebooks Asymptotically Achieving the Welch Bound

open access: yesIEEE Access, 2021
Exponential sums over Galois rings have many applications in coding theory, cryptography and algebraic combinatorics. In this article, we employ additive characters and multiplicative characters over Galois rings to present two classes of codebooks, and ...
Shimin Sun, Li Han, Yang Yan, Yao Yao
doaj   +1 more source

A Note on Exponential Sums

open access: yesFinite Fields and Their Applications, 1995
This paper along with \textit{J. Angel} [Finite Fields Appl. 2, 62-86 (1996; see the preceding review)] and \textit{R. Evans} [Finite Fields Appl. 1, 376-394 (1995; Zbl 0844.11078)] proves that finite upper half plane graphs are Ramanujan in characteristic 2. Ramanujan graphs were first defined by \textit{A. Lubotzky}, \textit{R.
openaire   +1 more source

Exponential Lower Bounds via Exponential Sums [PDF]

open access: yes
Valiant’s famous VP vs. VNP conjecture states that the symbolic permanent polynomial does not have polynomial-size algebraic circuits. However, the best upper bound on the size of the circuits computing the permanent is exponential. Informally, VNP is an
Bläser, Markus   +3 more
core   +1 more source

Tree codes and a conjecture on exponential sums [PDF]

open access: yesInformation Technology Convergence and Services, 2013
We propose a new conjecture on some exponential sums. These particular sums have not apparently been considered in the literature. Subject to the conjecture we obtain the first effective construction of asymptotically good tree codes.
Cristopher Moore, L. Schulman
semanticscholar   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

L-functions of Exponential Sums over Finite Fields [PDF]

open access: yes, 2021
Let $\mathbb{F}_{q}$ be a finite field with characteristic $p$. A fundamental problem in number theory is to estimate the reciprocal zeros and poles of L-functions of exponential sums over $\mathbb{F}_{q}$. In this dissertation, we focus on two classical
Chen, Chao
core  

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