Results 31 to 40 of about 12,365,970 (288)

R Factors from Proteus rettgeri [PDF]

open access: yesJournal of General Microbiology, 1972
SUMMARY: Of 12 R factors transferred from wild strains of Proteus rettgeri to Escherichia coli K12, all were fi - Five were of the N-compatibility group; three belonged to a newly defined group T, of which Rts1 is the prototype; one belonged to group W. The other three constituted at least one compatibility group, not previously described.
J N, Coetzee, N, Datta, R W, Hedges
openaire   +2 more sources

The Effect of Porosity on X-ray Emission Line Profiles from Hot-Star Winds [PDF]

open access: yes, 2006
We investigate the degree to which the nearly symmetric form of X-ray emission lines seen in Chandra spectra of early-type supergiant stars could be explained by a possibly porous nature of their spatially structured stellar winds.
Berghoefer T. W.   +6 more
core   +4 more sources

Order p^6 chiral couplings from the scalar K Pi form factor [PDF]

open access: yes, 2004
Employing results from a recent determination of the scalar KPi form factor F_0^KPi within a coupled channel dispersion relation analysis \cite{JOP01}, in this work we calculate the slope and curvature of F_0^KPi(t) at zero momentum transfer.
A. Pich   +24 more
core   +3 more sources

Facilitation of the Transfer of R Factor by the Resident R Factor [PDF]

open access: yesJournal of Bacteriology, 1970
Transfer of some R factors were shown to be facilitated by resident R factors. The sex factor itself may be responsible for this phenomenon.
M, Yoshikawa, K, Sakai
openaire   +2 more sources

A Generalization of the Hamilton-Waterloo Problem on Complete Equipartite Graphs

open access: yes, 2016
The Hamilton-Waterloo problem asks for which $s$ and $r$ the complete graph $K_n$ can be decomposed into $s$ copies of a given 2-factor $F_1$ and $r$ copies of a given 2-factor $F_2$ (and one copy of a 1-factor if $n$ is even).
Keranen, Melissa, Pastine, Adrián
core   +1 more source

Further Studies of Factor R.

open access: yesExperimental Biology and Medicine, 1947
SummaryThe growth and hemoglobin responses obtained in chicks receiving a purified diet supplemented with factor R were found not to be due to the preformed folic acid present in factor R.By means of chick liver, rat liver, and hog kidney incubation procedures the folic acid content of factor R was greatly increased.
L. W. Charkey   +4 more
openaire   +2 more sources

TFBSTools: an R/bioconductor package for transcription factor binding site analysis. [PDF]

open access: yes, 2016
Summary: The ability to efficiently investigate transcription factor binding sites (TFBSs) genome-wide is central to computational studies of gene regulation.
Lenhard, B, Tan, G
core   +2 more sources

The effect of the dynamical state of clusters on gas expulsion and infant mortality [PDF]

open access: yes, 2008
The star formation efficiency (SFE) of a star cluster is thought to be the critical factor in determining if the cluster can survive for a significant (>50 Myr) time.
A.-K. Jappsen   +32 more
core   +2 more sources

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar   +8 more
wiley   +1 more source

On-line Monitoring of VoIP Quality Using IPFIX

open access: yesAdvances in Electrical and Electronic Engineering, 2014
The main goal of VoIP services is to provide a reliable and high-quality voice transmission over packet networks. In order to prove the quality of VoIP transmission, several approaches were designed.
Petr Matousek, Martin Kmet, Martin Basel
doaj   +1 more source

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