Results 51 to 60 of about 178,696 (298)

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

open access: yesFEBS 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   +6 more
wiley   +1 more source

Special Ulrich bundles on regular surfaces with non–negative Kodaira dimension [PDF]

open access: yes, 2022
Let S be a regular surface endowed with a very ample line bundle OS(hS). Taking inspiration from a very recent result by D. Faenzi on K3 surfaces, we prove that if OS(hS) satisfies a short list of technical conditions, then such a polarized surface ...
Gianfranco Casnati, Casnati G.
core   +1 more source

Involutive sweeping surfaces with Frenet frame in Euclidean 3-space

open access: yesHeliyon, 2023
In this paper we first define the involutive sweeping surfaces as a new surface form. We then investigate singularity, Gaussian and mean curvatures of these surfaces. By calculating the Gaussian and mean curvatures of the involutive sweeping surfaces, we
Gökhan Köseoğlu, Mustafa Bilici
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

SOME CONSIDERATIONS ABOUT SURFACES’ INTERSECTION

open access: yesJournal of Industrial Design and Engineering Graphics, 2006
This paper wants to systematically and generally present the surfaces’ intersection, with special interest for the method of auxiliary surfaces. The intersections types presented are plane-cylinder, planecone, and cylinder-cylinder.
Gheorghe Marin
doaj   +4 more sources

Characteristic Properties of Type-2 Smarandache Ruled Surfaces According to the Type-2 Bishop Frame in E3

open access: yesAdvances in Mathematical Physics, 2021
In this paper, we define and investigate a special kind of ruled surfaces called type-2 Smarandache ruled surfaces related to the type-2 Bishop frame in E3.
Ibrahim Al-Dayel, E. M. Solouma
doaj   +1 more source

Special divisors on compact Riemann surfaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1968
Introduction. In a previous paper [1] the author obtained some results concerning the distribution of special divisors on compact Riemann surfaces of genus g. The reader is referred to [1 ] for definitions and notation. It was shown in [1, p. 886] that the product structure with STXSr and Tg(S) as factors may be endowed with a structure of complex ...
openaire   +2 more sources

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Some Special Ruled Surfaces in Hyperbolic 3-Space

open access: yes, 2021
In this paper, normal and binormal surfaces, a special class of ruled surfaces in hyperbolic 3-space, are discussed. These special surfaces are defined in hyperbolic 3-space and the types of these surfaces are introduced. The properties of these surfaces
Atceken, Mehmet, Mert, Tuğba
core   +1 more source

Special canal surfaces with Bishop frame and quaternions [PDF]

open access: yesSurveys in Mathematics and its Applications
The purpose of this paper is to show that canal and tubular surfaces can be obtained by special curves. Also, we reckon the equations of these surfaces with Bishop frame and acquire some corollaries for special curves.
Abdussamet Çalışkan
doaj  

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