Results 71 to 80 of about 927,975 (312)

Saturation Numbers of Books [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2008
A book $B_p$ is a union of $p$ triangles sharing one edge. This idea was extended to a generalized book $B_{b,p}$, which is the union of $p$ copies of a $K_{b+1}$ sharing a common $K_b$. A graph $G$ is called an $H$-saturated graph if $G$ does not contain $H$ as a subgraph, but $G\cup \{xy\}$ contains a copy of $H$, for any two nonadjacent vertices $x$
Guantao Chen   +2 more
openaire   +3 more sources

ANALISIS PEMANFAATAN MEDIA PEMBELAJARAN DALAM MENGATASI KEJENUHAN BELAJAR SISWA DALAM PEMBELAJARAN ILMU PENGETAHUAN ALAM DI KELAS IV SD SWASTA ARISA MEDAN DELI TAHUN AJARAN 2022/2023

open access: yes, 2022
: In science learning, low student learning achievement is caused by negative factors that reduce the motivation and enthusiasm for learning of grade IV students of SD Swasta Arisa Medan Deli School Year 2022/2023, especially in student psychological ...
Arnun, Annisa; Universitas Negeri Medan
core   +2 more sources

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

Benchmarking of Sensor Configurations and Measurement Sites for Out-of-the-Lab Photoplethysmography

open access: yesSensors, 2023
Photoplethysmography (PPG) is used for heart-rate monitoring in a variety of contexts and applications due to its versatility and simplicity. These applications, namely studies involving PPG data acquisition during day-to-day activities, require reliable
Max Nobre Supelnic   +4 more
doaj   +1 more source

The effects on arterial haemoglobin oxygen saturation and on shunt of increasing cardiac output with dopamine or dobutamine during one-lung ventilation

open access: yes, 2004
Publisher's copy made available with the permission of the publisher © Australian Society of AnaesthetistsTheoretically, if the cardiac output were increased in the presence of a given intrapulmonary shunt, the arterial saturation should improve as the ...
Russell, W., James, M.
core   +2 more sources

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

Saturation of Ordered Graphs

open access: yesSIAM Journal on Discrete Mathematics, 2023
Recently, the saturation problem of $0$-$1$ matrices gained a lot of attention. This problem can be regarded as a saturation problem of ordered bipartite graphs. Motivated by this, we initiate the study of the saturation problem of ordered and cyclically ordered graphs.
Vladimir Boskovic, Balázs Keszegh
openaire   +3 more sources

Ten steps for specifying saturation in qualitative research

open access: yes, 2022
Saturation is critical to reliability of qualitative social sciences, but methods descriptions differ greatly in the degree of detail provided. Rigour could be improved by routinely following a ten-step methodological protocol. 1.
Buckley, Ralf, Ralf Buckley
core   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Functional Profiling Reveals Altered Metabolic Activity in Divers’ Oral Microbiota During Commercial Heliox Saturation Diving [PDF]

open access: yes, 2021
Background: The extreme environment in saturation diving affects all life forms, including the bacteria that reside on human skin and mucosa. The oral cavity alone is home to hundreds of different bacteria.
Eftedal, I   +5 more
core   +1 more source

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