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Showing 1 to 12 of 261 entries
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… stages of change: a critique: observations by five commentators on the paper by Adams, J. and White, M.(2004) why don't stage-based activity promotion interventions …

education interventions

Brug J, Conner M, Harre N, Kremers S.
GSID: NG6zdDTIXPMJ
J Brug, M Conner, N Harre, S Kremers… - Health education …, 2005 - academic.oup.com

… -matched activity promotion interventions and we will argue that this evidence can just as well be interpreted as supporting stage-targeted interventions. Our conclusion … Individualized health education interventions that go beyond stage targeting, which are referred to as...

High-throughput phenotyping of lateral expansion and regrowth of spaced Lolium perenne plants using on-field image analysis.

Plant methods

Lootens P, Ruttink T, Rohde A, Combes D, Barre P, Roldán-Ruiz I.
PMID: 27293473
Plant Methods. 2016 Jun 10;12:32. doi: 10.1186/s13007-016-0132-8. eCollection 2016.

BACKGROUND: Genetic studies and breeding of agricultural crops frequently involve phenotypic characterization of large collections of genotypes grown in field conditions. These evaluations are typically based on visual observations and manual (destructive) measurements. Robust image capture and analysis procedures...

External cavity diode laser-based detection of trace gases with NICE-OHMS using current modulation.

Optics express

Centeno R, Mandon J, Cristescu SM, Axner O, Harren FJ.
PMID: 25836848
Opt Express. 2015 Mar 09;23(5):6277-82. doi: 10.1364/OE.23.006277.

We combine an external cavity diode laser with noise-immune cavity-enhanced optical heterodyne molecular spectroscopy (NICE-OHMS) using current modulation. With a finesse of 1600, we demonstrate noise equivalent absorption sensitivities of 4.1 x 10(-10) cm(-1) Hz(-1/2), resulting in sub-ppbv detection...

Two-crystal mid-infrared optical parametric oscillator for absorption and dispersion dual-comb spectroscopy.

Optics letters

Jin Y, Cristescu SM, Harren FJ, Mandon J.
PMID: 24876030
Opt Lett. 2014 Jun 01;39(11):3270-3. doi: 10.1364/OL.39.003270.

We present a femtosecond optical parametric oscillator (OPO) containing two magnesium-doped periodically poled lithium niobate crystals in a singly resonant ring cavity, pumped by two mode-locked Yb-fiber lasers. As such, the OPO generates two idler combs (up to 220...

Vocal coselection in rat pup ultrasonic vocalizations.

Ecology and evolution

Spence HR, Aslam AM, Hofer MA, Brunelli SA, Shair HN.
PMID: 27066218
Ecol Evol. 2016 Feb 24;6(7):1922-9. doi: 10.1002/ece3.1907. eCollection 2016 Apr.

Selective breeding and natural selection that select for one trait often bring along other correlated traits via coselection. Selective breeding for an infantile trait, high or low call rates of isolation-induced ultrasonic vocalization of rat pups, also alters functions...

Combining Drought Survival via Summer Dormancy and Annual Biomass Productivity in Dactylis glomerata L.

Frontiers in plant science

Kallida R, Zhouri L, Volaire F, Guerin A, Julier B, Shaimi N, Fakiri M, Barre P.
PMID: 26904054
Front Plant Sci. 2016 Feb 09;7:82. doi: 10.3389/fpls.2016.00082. eCollection 2016.

Under Mediterranean climates, the best strategy to produce rain-fed fodder crops is to develop perennial drought resistant varieties. Summer dormancy present in native germplasm has been shown to confer a high level of survival under severe drought. Nevertheless it...

Doppler-broadened mid-infrared noise-immune cavity-enhanced optical heterodyne molecular spectrometry based on an optical parametric oscillator for trace gas detection.

Optics letters

Silander I, Hausmaninger T, Ma W, Harren FJ, Axner O.
PMID: 25680119
Opt Lett. 2015 Feb 15;40(4):439-42. doi: 10.1364/OL.40.000439.

An optical parametric oscillator based Doppler-broadened (Db) noise-immune cavity-enhanced optical heterodyne molecular spectrometry (NICE-OHMS) system suitable for addressing fundamental vibrational transitions in the 3.2-3.9 μm mid-infrared (MIR) region has been realized. An Allan-Werle analysis provides a detection sensitivity of...

A Bis-Steroidal Phosphine as New Chiral Hydrogenation Ligand.

The Journal of organic chemistry

Enev V, Ewers CL, Harre M, Nickisch K and, Mohr JT.
PMID: 11671808
J Org Chem. 1997 Oct 17;62(21):7092-7093. doi: 10.1021/jo971444p.

No abstract available.

Investigation of Local Ethylene Emission from Intact Cherry Tomatoes by Means of Photothermal Deflection and Photoacoustic Detection.

Plant physiology

De Vries H, Harren F, Voesenek L, Blom C, Woltering EJ, Van Der Valk H, Reuss J.
PMID: 12228441
Plant Physiol. 1995 Apr;107(4):1371-1377. doi: 10.1104/pp.107.4.1371.

The function of the coronet region of the cherry tomato (Lycopersicon esculentum Cherry) as the main emission channel for ethylene was investigated. Ethylene was measured employing two laser-based detection systems, the photothermal deflection instrument and the photoacoustic detection setup....

Dynamics of Acetaldehyde Production during Anoxia and Post-Anoxia in Red Bell Pepper Studied by Photoacoustic Techniques.

Plant physiology

Zuckermann H, Harren F, Reuss J, Parker DH.
PMID: 12223654
Plant Physiol. 1997 Mar;113(3):925-932. doi: 10.1104/pp.113.3.925.

Acetaldehyde (AA), ethanol, and CO2 production in red bell pepper (Capsicum annum L.) fruit has been measured in a continuous flow system as the fruit was switched between 20% O2 and anaerobic conditions. Minimum gas phase concentrations of 0.5...

An in vitro assessment of the effects of broad-spectrum antibiotics on the human gut microflora and concomitant isolation of a Lactobacillus plantarum with anti-Candida activities.

Anaerobe

Wynne AG, McCartney AL, Brostoff J, Hudspith BN, Gibson GR.
PMID: 16701514
Anaerobe. 2004 Jun;10(3):165-9. doi: 10.1016/j.anaerobe.2004.03.002.

Chemostat culture was used to determine the effects of the antimicrobial agents tetracycline and nystatin on predominant components of the human gut microflora. Their addition to mixed culture systems caused a non-specific, and variable, decrease in microbial populations, although...

Quasi-solitonic behavior of self-written waveguides created by photopolymerization.

Optics letters

Dorkenoo K, Crégut O, Mager L, Gillot F, Carre C, Fort A.
PMID: 18033362
Opt Lett. 2002;27(20):1782-4. doi: 10.1364/ol.27.001782.

We investigated the condition of unique self-written channel and multichannel propagation inside bulk photopolymerizable materials. Light was introduced in the medium by a single-mode optical fiber. At a very low beam power of 5 muW , a unique uniform-channel...

Showing 1 to 12 of 261 entries