Results 31 to 40 of about 8,826,255 (198)

Antisymmetric tensor coupling and conformal invariance in sigma models corresponding to gauged WZNW theories

open access: yes, 1993
String backgrounds associated with gauged $G/H$ WZNW models generically depend on $\alpha'$ or $1/k$. The exact expressions for the corresponding metric $G_{\m\n}$, antisymmetric tensor $B_{\m\n}$, and dilaton $\phi$ can be obtained by eliminating the ...
A. A. Tseytlin   +64 more
core   +1 more source

Fast-rotating Blue Straggler Stars in the Globular Cluster NGC 3201

open access: yesThe Astrophysical Journal, 2023
We used high-resolution spectra acquired with the Magellan Telescope to measure radial and rotational velocities of approximately 200 stars in the Galactic globular cluster NGC 3201.
Alex Billi   +9 more
doaj   +1 more source

Wood-based Businesses and the Economic Development of Europe in the Nineteenth and Twentieth Centuries – An Introduction

open access: yesJahrbuch für Wirtschaftsgeschichte
This introduction sketches out what relevance wood and wood products have had in Europe’s industrial societies. It also summarizes some peculiarities of the wood-based businesses caused by both the materiality of wood and the ecologies of forests.
Bemmann Martin
doaj   +1 more source

Genetic Characterization and Phylogenetic Analysis of Small Ruminant Lentiviruses Detected in Spanish Assaf Sheep with Different Mammary Lesions

open access: yesViruses, 2018
Small Ruminant Lentiviruses (SRLVs) are widespread in many countries and cause economically relevant, slow, and persistent diseases in sheep and goats.
Elena Gayo   +5 more
doaj   +1 more source

In Vitro Characterization of Indigenous Probiotic Strains Isolated from Colombian Creole Pigs

open access: yesAnimals, 2020
Three lactic acid strains were isolated from feces of the native Zungo Pelado breed of pigs (n = 5) and presumably identified as belonging to the Lactobacillaceae family by morphological techniques showing that they were Gram-positive/rod-shaped and ...
César Betancur   +4 more
doaj   +1 more source

Influence of histologic chorioamnionitis and funisitis on the level of peripheral blood C-reactive protein at birth in preterm infants [PDF]

open access: yesKorean Journal of Pediatrics, 2010
Purpose : The objective of this study is to determine the change of C-reactive protein (CRP) levels in the peripheral blood of preterm infants at birth according to the stage of intrauterine inflammation. Methods : A total of 187 infants (&lt&
Do-Hyun Kim   +3 more
doaj   +1 more source

A Locally Supersymmetric Action for the Bosonic String

open access: yes, 1993
Recently Berkovits and Vafa have shown that the bosonic string can be viewed as the fermionic string propagating in a particular background. Such a background is described by a somewhat unusual $N=1$ superconformal system.
Bastianelli, Fiorenzo
core   +2 more sources

Geographical Aspects of Diphtheria in England and Wales: Immunisation and the Spatial Sequence of Retreat to Effective Elimination, 1921 to 1964

open access: yesJahrbuch für Wirtschaftsgeschichte
On the eve of the Second World War, an average of 5,000 hospital beds in England and Wales were occupied at any one time by diphtheria patients, and the annual costs of their treatment was £1 million.
Smallman-Raynor Matthew   +2 more
doaj   +1 more source

Currents on Grassmann algebras

open access: yes, 1993
We define currents on a Grassmann algebra $Gr(N)$ with $N$ generators as distributions on its exterior algebra (using the symmetric wedge product). We interpret the currents in terms of ${\Z}_2$-graded Hochschild cohomology and closed currents in terms ...
Berezin   +10 more
core   +1 more source

The Relative Weakness of Serfdom and Lordship in Later Medieval England: The Example of Bredfield (Suffolk)

open access: yesJahrbuch für Wirtschaftsgeschichte
Historians dispute the nature of medieval English serfdom. For some, it represents one of the most powerful and pervasive systems of serfdom in medieval Europe, highly extractive of peasant surpluses: consequently, only concerted peasant resistance in ...
Bailey Mark
doaj   +1 more source

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