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Showing 1 to 12 of 655 entries
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High-accuracy optical clock based on the octupole transition in 171Yb+.

Physical review letters

Huntemann N, Okhapkin M, Lipphardt B, Weyers S, Tamm C, Peik E.
PMID: 22463621
Phys Rev Lett. 2012 Mar 02;108(9):090801. doi: 10.1103/PhysRevLett.108.090801. Epub 2012 Feb 29.

We experimentally investigate an optical frequency standard based on the 467 nm (642 THz) electric-octupole reference transition (2)S(1/2)(F=0)→(2)F(7/2)(F=3) in a single trapped (171)Yb(+) ion. The extraordinary features of this transition result from the long natural lifetime and from the...

Determination of the lateral dimension of graphene oxide nanosheets using analytical ultracentrifugation.

Small (Weinheim an der Bergstrasse, Germany)

Walter J, Nacken TJ, Damm C, Thajudeen T, Eigler S, Peukert W.
PMID: 25201557
Small. 2015 Feb 18;11(7):814-25. doi: 10.1002/smll.201401940. Epub 2014 Sep 08.

In this paper, a method to determine the lateral dimensions of 2D nanosheets directly in suspension by analytical ultracentrifugation (AUC) is shown. The basis for this study is a well-characterized and stable dispersion of graphene oxide (GO) monolayers in...

Computational and experimental investigations of CO2 and N2O fixation by sterically demanding N-heterocyclic carbenes (NHC) and NHC/borane FLP systems.

Dalton transactions (Cambridge, England : 2003)

Theuergarten E, Bannenberg T, Walter MD, Holschumacher D, Freytag M, Daniliuc CG, Jones PG, Tamm M.
PMID: 24217215
Dalton Trans. 2014 Jan 28;43(4):1651-62. doi: 10.1039/c3dt52742e.

The sterically demanding NHCs 1,3-di-tert-butylimidazolin-2-ylidene (1a), 1,3-di-tert-butyl-4,5-dimethylimidazolin-2-yildene (1b), and also the corresponding frustrated Lewis pair combinations 1a,b/B(C6F5)3 react readily with CO2 to form the NHC·CO2 (5a,b) and the NHC·CO2·B(C6F5)3 (9a,b) adducts, respectively. However, N2O activation and isolation of the...

Antibiotic Resistance: What are the Opportunities for Primary Care in Alleviating the Crisis?.

Frontiers in public health

Hansen MP, Hoffmann TC, McCullough AR, van Driel ML, Del Mar CB.
PMID: 25759809
Front Public Health. 2015 Feb 24;3:35. doi: 10.3389/fpubh.2015.00035. eCollection 2015.

Numerous opportunities are available in primary care for alleviating the crisis of increasing antibiotic resistance. Preventing patients from developing an acute respiratory infection (ARI) will obviate any need for antibiotic use downstream. Hygiene measures such as physical barriers and...

Breast Cancer among Women Living in Poverty: Better Care in Canada than in the United States.

Social work research

Gorey KM, Richter NL, Luginaah IN, Hamm C, Holowaty EJ, Zou G, Balagurusamy MK.
PMID: 26180488
Soc Work Res. 2015 May 21;39(2):107-118. doi: 10.1093/swr/svv006.

This historical study estimated the protective effects of a universally accessible, single-payer health care system versus a multi-payer system that leaves many uninsured or underinsured by comparing breast cancer care of women living in high poverty neighborhoods in Ontario...

Correction to: The pulvinar nucleus and antidepressant treatment: dynamic modeling of antidepressant response and remission with ultra-high field functional MRI.

Molecular psychiatry

Kraus C, Klöbl M, Tik M, Auer B, Vanicek T, Geissberger N, Pfabigan DM, Hahn A, Woletz M, Paul K, Komorowski A, Kasper S, Windischberger C, Lamm C, Lanzenberger R.
PMID: 29520037
Mol Psychiatry. 2019 May;24(5):772. doi: 10.1038/s41380-018-0032-6.

The author list was presented as last name, first name. The names should have been listed as:Christoph Kraus, Manfred Klöbl, Martin Tik, Bastian Auer, Thomas Vanicek, Nicole Geissberger, Daniela M. Pfabigan, Andreas Hahn, Michael Woletz, Katharina Paul, Arkadiusz Komorowski,...

The Accuracy of 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in the Evaluation of Bone Lesions of Undetermined Origin.

World journal of nuclear medicine

Tamam C, Tamam M, Mulazimoglu M.
PMID: 27134563
World J Nucl Med. 2016 May-Aug;15(2):124-9. doi: 10.4103/1450-1147.176885.

The aim of the current study was to determine the diagnostic accuracy of whole-body fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) in detecting carcinoma of unknown primary (CUP) with bone metastases. We evaluated 87 patients who were referred to FDG-PET/CT...

Leukocyte telomere length and hippocampus volume: a meta-analysis.

F1000Research

Nilsonne G, Tamm S, Månsson KN, Åkerstedt T, Lekander M.
PMID: 26674112
F1000Res. 2015 Oct 15;4:1073. doi: 10.12688/f1000research.7198.1. eCollection 2015.

Leukocyte telomere length has been shown to correlate to hippocampus volume, but effect estimates differ in magnitude and are not uniformly positive. This study aimed primarily to investigate the relationship between leukocyte telomere length and hippocampus gray matter volume...

The strong catalytic effect of Pb(II) on the oxygen reduction reaction on 5 nm gold nanoparticles.

Physical chemistry chemical physics : PCCP

Wang Y, Laborda E, Plowman BJ, Tschulik K, Ward KR, Palgrave RG, Damm C, Compton RG.
PMID: 24407350
Phys Chem Chem Phys. 2014 Feb 21;16(7):3200-8. doi: 10.1039/c3cp55306j.

Citrate-capped gold nanoparticles (AuNPs) of 5 nm in diameter are synthesized via wet chemistry and deposited on a glassy carbon electrode through electrophoresis. The kinetics of the oxygen reduction reaction (ORR) on the modified electrode is determined quantitatively in...

Management of Crises and Risks in German Hospitals - Factors Influencing Medication Errors.

Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research

Draheim M, Flessa S, Glasberg R, Hartmann M, Schermuly C, Stanchev V, Tamm G, Hessel FP.
PMID: 27201097
Value Health. 2014 Nov;17(7):A426. doi: 10.1016/j.jval.2014.08.1067. Epub 2014 Oct 26.

No abstract available.

Modification of Hematite Electronic Properties with Trimethyl Aluminum to Enhance the Efficiency of Photoelectrodes.

The journal of physical chemistry letters

Tallarida M, Das C, Cibrev D, Kukli K, Tamm A, Ritala M, Lana-Villarreal T, Gómez R, Leskelä M, Schmeisser D.
PMID: 26278613
J Phys Chem Lett. 2014 Oct 16;5(20):3582-7. doi: 10.1021/jz501751w. Epub 2014 Oct 07.

The electronic properties of hematite were investigated by means of synchrotron radiation photoemission (SR-PES) and X-ray absorption spectroscopy (XAS). Hematite samples were exposed to trimethyl aluminum (TMA) pulses, a widely used Al-precursor for the atomic layer deposition (ALD) of...

A functional polymorphism in the prodynorphin gene affects cognitive flexibility and brain activation during reversal learning.

Frontiers in behavioral neuroscience

Votinov M, Pripfl J, Windischberger C, Moser E, Sailer U, Lamm C.
PMID: 26190983
Front Behav Neurosci. 2015 Jul 03;9:172. doi: 10.3389/fnbeh.2015.00172. eCollection 2015.

Whether the opioid system plays a role in the ability to flexibly adapt behavior is still unclear. We used fMRI to investigate the effect of a nucleotide tandem repeat (68-bp VNTR) functional polymorphism of the prodynorphin (PDYN) gene on...

Showing 1 to 12 of 655 entries