Results 61 to 70 of about 10,135,412 (297)

Structure–property relationships for solubility of monosaccharides

Applied Water Science, 2019
A series of difficulties make inaccessible precise experimental determinations of solubilities in standard conditions for monosaccharides; in water, the monosaccharides may switch from the acyclic to cyclic form and also the cyclic forms can undergo ...
Lorentz Jäntschi
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

Characteristic numbers and chromatic polynomial of a tensor

Forum of Mathematics, Sigma
We introduce the characteristic numbers and the chromatic polynomial of a linear subspace of matrices, or equivalently of a tensor. Our approach generalizes and unifies the chromatic polynomial of a graph and of a matroid, characteristic numbers of ...
Austin Conner, Mateusz Michalek
doaj   +1 more source

A new approach to tridiagonal matrices related to the Sylvester–Kac matrix [PDF]

Notes on Number Theory and Discrete Mathematics
The Sylvester–Kac matrix, a well-known tridiagonal matrix, has been extensively studied for over a century, with various generalizations explored in the literature.
Efruz Özlem Mersin, Mustafa Bahşi
doaj   +1 more source

A Simple Model of Ballistic Conduction in Multi-Lead Molecular Devices

Applied Sciences, 2021
A fully analytical model is presented for ballistic conduction in a multi-lead device that is based on a π-conjugated carbon framework attached to a single source lead and several sink leads. This source-and-multiple-sink potential (SMSP) model is rooted
Patrick W. Fowler, Barry T. Pickup
doaj   +1 more source

A fast algorithm for computing the characteristic polynomial of the p-curvature [PDF]

International Symposium on Symbolic and Algebraic Computation, 2014
We discuss theoretical and algorithmic questions related to the p-curvature of differential operators in characteristic p. Given such an operator L, and denoting by Ξ(L) the characteristic polynomial of its p-curvature, we first prove a new, alternative,
Alin Bostan, X. Caruso, É. Schost
semanticscholar   +1 more source

On prescribed characteristic polynomials

Linear Algebra and its Applications
Let $\mathbb{F}$ be a field. We show that given any $n$th degree monic polynomial $q(x)\in \mathbb{F}[x]$ and any matrix $A\in\mathbb{M}_n(\mathbb{F})$ whose trace coincides with the trace of $q(x)$ and consisting in its main diagonal of $k$ 0-blocks of order one, with ...
Peter Danchev, Esther García, Miguel Gómez Lozano   +2 more
openaire   +6 more sources

On the characteristic polynomial of the power of a path [PDF]

Proyecciones (Antofagasta), 2017
We determine a closed-form expression for the fifth characteristic coefficient of the power of a path. To arrive at this result, we establish the number of 4-cycles in the graph by means of their structural properties. The method developed might be applied to other well-structured graph classes in order to count 4-cycles or modified to count cycles of ...
Malajovich, Beatriz, Abreu, Nair M. M., Markenzon, Lilian   +2 more
openaire   +2 more sources

Long‐Term Follow‐Up of Chemotherapy‐Associated Biological Aging in Women With Early Breast Cancer

Aging and Cancer, EarlyView.
Women threated with adjuvant chemotherapy for early breast cancer have sustained long‐term increase in p16INK4a,, a robust marker of cell senescence, suggesting a chemotherapy‐associated age acceleration. p16INK4a as well as other biomarkers may identify patients at greatest risk for senescence‐related diseases of aging.
Hyman B. Muss, Alexis C. Wardell, Allison M. Deal, Kirsten A. Nyrop, Allison Ross, Yara G. Abdou, Jeffrey D. Aldrich, Lisa A. Cary, E. Claire Dees, Katherine E. Reeder‐Hayes, Emily M. Ray, Natalia Mitin, Denis Tsygankov   +12 more
wiley   +1 more source

Baseline Regional Cholinergic Denervation Predicts Cognitive Trajectories in Moderate Parkinson Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cognitive decline is a disabling and variable feature of Parkinson disease (PD). While cholinergic system degeneration is linked to cognitive impairments in PD, most prior research reported cross‐sectional associations. We aimed to fill this gap by investigating whether baseline regional cerebral vesicular acetylcholine transporter ...
Taylor Brown, Giulia Carli, Prabesh Kanel, Stiven Roytman, Jaimie Barr, Nicolaas I. Bohnen, Roger L. Albin   +6 more
wiley   +1 more source