Results 11 to 20 of about 1,711,443 (299)

A Mechanistic Model of Botrytis cinerea on Grapevines That Includes Weather, Vine Growth Stage, and the Main Infection Pathways. [PDF]

open access: yesPLoS ONE, 2015
A mechanistic model for Botrytis cinerea on grapevine was developed. The model, which accounts for conidia production on various inoculum sources and for multiple infection pathways, considers two infection periods.
Elisa González-Domínguez   +3 more
doaj   +1 more source

RX J0806+15: the shortest period binary? [PDF]

open access: yes, 2002
The X-ray source RX J0806+15 was discovered using ROSAT , and shows an X-ray light curve with a prominent modulation on a period of 321.5 s. We present optical observations in which we report the detection of its optical counterpart.
Cropper, M, Hakala, P, Ramsay, G
core   +1 more source

Suzaku observation of the classical nova V2491 Cyg in quiescence [PDF]

open access: yes, 2015
We present Suzaku XIS observation of V2491 Cyg (Nova Cyg 2008 No. 2) obtained in quiescence, more than two years after the outburst. The nova was detected as a very luminous source in a wide spectral range from soft to hard X-rays.
Mukai, Koji, Orio, Marina, Zemko, Polina
core   +3 more sources

A separation of the reactions in photosynthesis by means of intermittent light [PDF]

open access: yes, 1932
Experiments on photosynthesis in intermittent light have been made on two occasions. Brown and Escombe, in 1905, made use of a rotating sector to study the effect of light intensity on the photosynthesis of leaves.
Arnold, William, Emerson, Robert
core   +2 more sources

Zu den Feindbildern auf den Zauberstäben des Mittleren Reiches und der Zweiten Zwischenzeit

open access: yesÉtudes et Travaux (Institute des Cultures Méditerranéennes et Orientales de l'Académie Polonaise des Sciences), 2017
The ivory wands of the Middle Kingdom display various creatures to be annihilated by protective deities, especially snakes and human foes. It seems that the snakes pictured on the ivory wands represent chaotic numina of primeval times which endanger the
Hartwig Altenmüller
doaj   +1 more source

Simulations of the tidal interaction and mass transfer of a star in an eccentric orbit around an intermediate-mass black hole: the case of HLX-1 [PDF]

open access: yes, 2015
The X-ray source HLX-1 near the spiral galaxy ESO 243-49 is currently the best intermediate-mass black hole candidate. It has a peak bolometric luminosity of $10^{42}$ erg s$^{-1}$, which implies a mass inflow rate of $\sim10^{-4}$ MSun yr$^{-1}$, but ...
Pols, Onno   +2 more
core   +4 more sources

A Self-Powered DSSH Circuit with MOSFET Threshold Voltage Management for Piezoelectric Energy Harvesting

open access: yesMicromachines, 2023
This paper presents a piezoelectric (PE) energy harvesting circuit based on the DSSH (double synchronized switch harvesting) principle. The circuit consisted of a rectifier and a DC–DC circuit, which achieves double synchronized switch operation for the ...
Liao Wu, Xinhui Wang, Minghua Xie
doaj   +1 more source

Investigating kurdish efl students’ speed reading and reading comprehension levels at the university of duhok

open access: yesگۆڤارا زانستێن مرۆڤایەتی یا زانكۆیا زاخۆ, 2023
The purpose of this study was to identify Kurdish EFL students’ speed reading and reading comprehension levels and to show the effect of speed reading on reading comprehension. The study utilized a quantitative method to collect data for a period of six
Sipan Mohammed, Fatimah Hasan
doaj   +1 more source

The high-field polar RX J1007.5-2017 [PDF]

open access: yes, 2012
We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoidal modulation of the secondary star in an extended low state.
Beuermann, K.   +4 more
core   +2 more sources

Multiwavelength study of RX J2015.6+3711: a magnetic cataclysmic variable with a 2-hr spin period [PDF]

open access: yes, 2015
The X-ray source RX J2015.6+3711 was discovered by ROSAT in 1996 and recently proposed to be a cataclysmic variable (CV). Here we report on an XMM-Newton observation of RX J2015.6+3711 performed in 2014, where we detected a coherent X-ray modulation at a
Campana, Sergio   +6 more
core   +3 more sources

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