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Showing 1 to 12 of 211 entries
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Fatty Acid Surfactant Photochemistry Results in New Particle Formation.

Scientific reports

Alpert PA, Ciuraru R, Rossignol S, Passananti M, Tinel L, Perrier S, Dupart Y, Steimer SS, Ammann M, Donaldson DJ, George C.
PMID: 28978998
Sci Rep. 2017 Oct 04;7(1):12693. doi: 10.1038/s41598-017-12601-2.

Organic interfaces that exist at the sea surface microlayer or as surfactant coatings on cloud droplets are highly concentrated and chemically distinct from the underlying bulk or overlying gas phase. Therefore, they may be potentially unique locations for chemical...

GaSb-based vertical-cavity surface-emitting lasers with an emission wavelength at 3 μm.

Optics letters

Andrejew A, Sprengel S, Amann MC.
PMID: 27304292
Opt Lett. 2016 Jun 15;41(12):2799-802. doi: 10.1364/OL.41.002799.

GaSb-based electrically pumped vertical-cavity surface-emitting lasers (VCSELs) with a buried tunnel junction emitting at 3 μm are demonstrated. To achieve this, a low optical loss VCSEL concept with an undoped epitaxial distributed Bragg reflector and intracavity contact is presented....

Angioimmunoblastic T-Cell Lymphoma Mimicking Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS Syndrome).

Case reports in dermatology

Mangana J, Guenova E, Kerl K, Urosevic-Maiwald M, Amann VC, Bayard C, Dummer R, French LE.
PMID: 28611626
Case Rep Dermatol. 2017 Mar 21;9(1):74-79. doi: 10.1159/000458752. eCollection 2017.

Angioimmunoblastic T-cell lymphoma (AITCL) is a rare, aggressive lymphoma which derives from follicular helper T cells, commonly affecting the elderly population. It accounts for 2% of all non-Hodgkin lymphomas, with a reported 5-year overall survival rate of less than...

Performance of a fire detector based on a compact laser spectroscopic carbon monoxide sensor.

Optics express

Hangauer A, Chen J, Strzoda R, Fleischer M, Amann MC.
PMID: 24921562
Opt Express. 2014 Jun 02;22(11):13680-90. doi: 10.1364/OE.22.013680.

In this paper we show the suitability of a miniaturized tunable diode laser spectroscopy (TDLS)-based carbon-monoxide (CO) sensor for fire detection applications. The sensor utilizes a vertical-cavity surface-emitting laser (VCSEL) and inherent calibration scheme with reference gas filled in...

Giant nonlinear response from plasmonic metasurfaces coupled to intersubband transitions.

Nature

Lee J, Tymchenko M, Argyropoulos C, Chen PY, Lu F, Demmerle F, Boehm G, Amann MC, Alù A, Belkin MA.
PMID: 24990746
Nature. 2014 Jul 03;511(7507):65-9. doi: 10.1038/nature13455.

Intersubband transitions in n-doped multi-quantum-well semiconductor heterostructures make it possible to engineer one of the largest known nonlinear optical responses in condensed matter systems--but this nonlinear response is limited to light with electric field polarized normal to the semiconductor...

Summertime elemental mercury exchange of temperate grasslands on an ecosystem-scale.

Atmospheric chemistry and physics

Fritsche J, Wohlfahrt G, Ammann C, Zeeman M, Hammerle A, Obrist D, Alewell C.
PMID: 24348525
Atmos Chem Phys. 2008 Dec 22;8(24). doi: 10.5194/acp-8-7709-2008.

In order to estimate the air-surface mercury exchange of grasslands in temperate climate regions, fluxes of gaseous elemental mercury (GEM) were measured at two sites in Switzerland and one in Austria during summer 2006. Two classic micrometeorological methods (aerodynamic...

Four dimensional magnetic resonance velocimetry for complex flow in the jugular vein.

Quantitative imaging in medicine and surgery

Acevedo-Bolton G, Amans MR, Kefayati S, Halbach V, Saloner D.
PMID: 26435930
Quant Imaging Med Surg. 2015 Aug;5(4):635-7. doi: 10.3978/j.issn.2223-4292.2015.04.09.

No abstract available.

Intracellular compartmentation of two enzymes of berberine biosynthesis in plant cell cultures.

Planta

Amann M, Wanner G, Zenk MH.
PMID: 24240298
Planta. 1986 Mar;167(3):310-20. doi: 10.1007/BF00391333.

Out of the eight enzymes involved in the biosynthesis of the isoquinoline alkaloid berberine, at least, two enzymes, berberine bridge enzyme and (S)-tetrahydroprotoberberine oxidase, are exclusively located in a vesicle with a specific gravity of ϱ=1.14 g·cm(-3) as shown...

Shikimic acid ozonolysis kinetics of the transition from liquid aqueous solution to highly viscous glass.

Physical chemistry chemical physics : PCCP

Steimer SS, Berkemeier T, Gilgen A, Krieger UK, Peter T, Shiraiwa M, Ammann M.
PMID: 26536455
Phys Chem Chem Phys. 2015 Dec 14;17(46):31101-9. doi: 10.1039/c5cp04544d.

Ageing of particulate organic matter affects the composition and properties of atmospheric aerosol particles. Driven by temperature and humidity, the organic fraction can vary its physical state between liquid and amorphous solid, or rarely even crystalline. These transitions can...

Effects of altrenogest on total scrotal width, seminal characteristics, concentrations of LH and testosterone and sexual behavior of stallions.

Theriogenology

Squires EL, Badzinski SL, Amann RP, McCue PM, Nett TM.
PMID: 16728130
Theriogenology. 1997 Jul 15;48(2):313-28. doi: 10.1016/s0093-691x(97)84078-2.

Twenty stallions (3 to 18 yr old) were used in a study between June 1993 and March 1994. The stallions were divided into 5 groups of 4 each, and, within groups, were randomly assigned to 1 of 4 treatments:...

Oligothiophene-based catenanes: synthesis and electronic properties of a novel conjugated topological structure.

Angewandte Chemie (International ed. in English)

Bäuerle P, Ammann M, Wilde M, Götz G, Mena-Osteritz E, Rang A, Schalley CA.
PMID: 17075935
Angew Chem Int Ed Engl. 2007;46(3):363-8. doi: 10.1002/anie.200602652.

No abstract available.

An in situ cell to study phase transitions in individual aerosol particles on a substrate using scanning transmission x-ray microspectroscopy.

The Review of scientific instruments

Huthwelker T, Zelenay V, Birrer M, Krepelova A, Raabe J, Tzvetkov G, Vernooij MG, Ammann M.
PMID: 21133477
Rev Sci Instrum. 2010 Nov;81(11):113706. doi: 10.1063/1.3494604.

A new in situ cell to study phase transitions and chemical processes on individual aerosol particles in the x-ray transmission microscope at the PolLux beamline of the Swiss light source has been built. The cell is machined from stainless...

Showing 1 to 12 of 211 entries