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Longitudinal assessment of hydropeaking impacts on various scales for an improved process understanding and the design of mitigation measures.

The Science of the total environment

Hauer C, Holzapfel P, Leitner P, Graf W.
PMID: 28346992
Sci Total Environ. 2017 Jan 01;575:1503-1514. doi: 10.1016/j.scitotenv.2016.10.031. Epub 2016 Oct 26.

Hydropeaking is one of the main pressures on the aquatic ecology in alpine rivers. Beside studies on abiotic process and biotic response on the local scale there is a lack in process understanding on the reach scale. Especially longitudinal...

Metal nanoparticle gratings: influence of dipolar particle interaction on the plasmon resonance.

Physical review letters

Lamprecht B, Schider G, Lechner RT, Ditlbacher H, Krenn JR, Leitner A, Aussenegg FR.
PMID: 10990780
Phys Rev Lett. 2000 May 15;84(20):4721-4. doi: 10.1103/PhysRevLett.84.4721.

We probe the influence of grating effects on plasmon excitations in gold nanoparticles arranged in regular two-dimensional patterns. Samples produced by electron-beam lithography are investigated by femtosecond time-resolved and spectroscopic methods. We find a strong dependence of the plasmon...

Air handling in clean laboratory environments: the reason for anomalously high boron background levels.

Analytical and bioanalytical chemistry

Rosner M, Romer RL, Meixner A.
PMID: 15900461
Anal Bioanal Chem. 2005 May;382(1):120-4. doi: 10.1007/s00216-005-3170-z. Epub 2005 Apr 13.

The isotopic analysis of boron from material that carries only trace amounts of boron requires low boron blank levels. Large efforts are taken to keep blank levels low by purifying reagents. We performed exposure experiments and determined procedure blanks...

Surface plasmon polariton-based optical beam profiler.

Optics letters

Ditlbacher H, Krenn JR, Leitner A, Aussenegg FR.
PMID: 15233451
Opt Lett. 2004 Jun 15;29(12):1408-10. doi: 10.1364/ol.29.001408.

We describe a surface plasmon polariton- (SPP-) based device for measuring the intensity distribution of strongly focused light beams. A gold thin film configured as a sharp step is positioned in the focal region of a light beam, converting...

Enantioselective iridium-catalyzed allylic amination of ammonia and convenient ammonia surrogates.

Organic letters

Pouy MJ, Leitner A, Weix DJ, Ueno S, Hartwig JF.
PMID: 17725361
Org Lett. 2007 Sep 27;9(20):3949-52. doi: 10.1021/ol701562p. Epub 2007 Aug 29.

Iridium-catalyzed, asymmetric allylation of ammonia as a nucleophile occurs with stereoselectivity to form a symmetric diallylamine, and related allylation of the inexpensive ammonia equivalent potassium trifluoroacetamide or the highly reactive ammonia equivalent lithium di-tert-butyliminodicarboxylate forms a range of conveniently...

Conversion efficiency of high-Z backlighter materials.

The Review of scientific instruments

Keiter PA, Comely A, Morton J, Tierney H, Workman J, Taylor M.
PMID: 19044573
Rev Sci Instrum. 2008 Oct;79(10):10E918. doi: 10.1063/1.2978202.

High-Z backlighter materials are commonly used as x-ray sources for diagnosing laser-driven experiments. In order to properly plan for experiments and analyze the data, it is important to understand both the number and distribution of photons emitted by the...

Optical dichroism of lithographically designed silver nanoparticle films.

Optics letters

Gotschy W, Vonmetz K, Leitner A, Aussenegg FR.
PMID: 19876265
Opt Lett. 1996 Aug 01;21(15):1099-101. doi: 10.1364/ol.21.001099.

Films of identically shaped, elongated, and parallel-oriented metal nanoparticles arranged in a regular pattern upon a transparent substrate were produced by use of electron-beam lithography. Because of the strong difference in the particles' polarizability components, the optical extinction spectra...

High-Resolution Spectral Domain-Optical Coherence Tomography in Multiple Sclerosis, Part II - the Total Macular Volume. The First Follow-Up Study over 2 Years.

Frontiers in neurology

Serbecic N, Aboul-Enein F, Beutelspacher SC, Khan A, Vass C, Kristoferitsch W, Reitner A, Schmidt-Erfurth U.
PMID: 24605107
Front Neurol. 2014 Feb 24;5:20. doi: 10.3389/fneur.2014.00020. eCollection 2014.

BACKGROUND: Recent studies investigating the use of optical coherence tomography (OCT) in multiple sclerosis (MS) patients have resulted in wide-ranging and often contradictory outcomes. This is mainly due to the complex etiology and heterogeneity of MS, physiological variations in...

The First Case(s) of Botulism in Vienna in 21 Years: A Case Report.

Case reports in infectious diseases

Vossen MG, Gattringer KB, Wenisch J, Khalifeh N, Koreny M, Spertini V, Allerberger F, Graninger W, Kornschober C, Lagler H, Reitner A, Sycha T, Thalhammer F.
PMID: 22779015
Case Rep Infect Dis. 2012;2012:438989. doi: 10.1155/2012/438989. Epub 2012 Jun 21.

UNLABELLED: We describe two linked cases of botulinum toxin intoxication to provide the clinician with a better idea about how botulism cases may present since early diagnosis and treatment are crucial in botulism. Botulinum toxin is the strongest neurotoxin...

Correlating cation ordering and voltage fade in a lithium-manganese-rich lithium-ion battery cathode oxide: a joint magnetic susceptibility and TEM study.

Physical chemistry chemical physics : PCCP

Mohanty D, Sefat AS, Li J, Meisner RA, Rondinone AJ, Payzant EA, Abraham DP, Wood DL, Daniel C.
PMID: 24129599
Phys Chem Chem Phys. 2013 Nov 28;15(44):19496-509. doi: 10.1039/c3cp53658k.

Structure-electrochemical property correlation is presented for lithium-manganese-rich layered-layered nickel manganese cobalt oxide (LMR-NMC) having composition Li1.2Co0.1Mn0.55Ni0.15O2 (TODA HE5050) in order to examine the possible reasons for voltage fade during short-to-mid-term electrochemical cycling. The Li1.2Co0.1Mn0.55Ni0.15O2 based cathodes were cycled at...

Homochiral helical metal-organic frameworks of potassium.

Inorganic chemistry

Reger DL, Leitner AP, Smith MD.
PMID: 22967397
Inorg Chem. 2012 Oct 01;51(19):10071-3. doi: 10.1021/ic301228j. Epub 2012 Sep 11.

Two trifunctional ligands built from enantiopure amino acids and containing a 1,8-naphthalimide group have been used to prepare two new complexes of potassium that have extended structures based on homochiral-rod secondary building units. One structure is a three-dimensional metal-organic...

Development of a backlit-multi-pinhole radiography source.

The Review of scientific instruments

VanDervort R, Trantham M, Klein S, Sorce C, Keiter PA, Drake RP.
PMID: 30399677
Rev Sci Instrum. 2018 Oct;89(10):10G110. doi: 10.1063/1.5035557.

Backlit-pinhole radiography uses a pinhole placed between an x-ray source and a sample. The backlit-multi-pinhole design uses two pinholes on the same substrate, which are separated by a wall, to create two radiographic images projected along similar axes. The...

Showing 1 to 12 of 144 entries