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Showing 13 to 24 of 560 entries
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Magnetic field effect on the thresholds of a sequence of transitions in the electroconvection of a homeotropic nematic liquid crystal.

Physical review. E, Statistical, nonlinear, and soft matter physics

Eber N, Németh S, Rossberg AG, Kramer L, Buka A.
PMID: 12366230
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Sep;66(3):036213. doi: 10.1103/PhysRevE.66.036213. Epub 2002 Sep 23.

We present a detailed analysis of the characteristics of electroconvection patterns in a homeotropic nematic liquid crystal under the influence of a variable magnetic field. An unambiguous observation of low frequency "reentrant" normal rolls and a nonmonotonic magnetic field...

[The possible role of information technology in radiotherapy II. The development of a biological dose distribution model in the 3-dimensional treatment planning of brain tumours].

Magyar onkologia

Mangel L, Kiss T, Skriba Z, Németh G.
PMID: 12050757
Magy Onkol. 2000 Jul 01;44(2):123-127. doi: HUON.2000.44.2.0123.

OBJECTIVE: Developing a new medical software based on the utilisation of information technology required in 3-dimensional treatment planning and modern radiotherapy. METHODS: The physical dose distribution programs were converted into biological meaning with the insertion of biological equivalence equations...

[Dosimetry of total skin electron irradiation].

Magyar onkologia

Kontra G, Horváth A, Bajcsay A, Németh G.
PMID: 12050758
Magy Onkol. 2000 Jul 01;44(2):129-133. doi: HUON.2000.44.2.0129.

Elaboration of such a simple technique for total skin electron irradiation which ensures good dose homogeneity and minimal x-ray background dose. MATERIALS AND METHODS: We started large electron field irradiations with the Neptun 10p linear accelerator in the National...

Al-free Sn-Beta zeolite as a catalyst for the selective reduction of carbonyl compounds (Meerwein-Ponndorf-Verley reaction).

Journal of the American Chemical Society

Corma A, Domine ME, Nemeth L, Valencia S.
PMID: 11916388
J Am Chem Soc. 2002 Apr 03;124(13):3194-5. doi: 10.1021/ja012297m.

The catalytic activity of Sn-Beta zeolite in the Meerwein-Ponndorf-Verley (MPV) reduction of carbonyl compounds with secondary alcohols was performed with quantitative yields to the corresponding alcohol. This heterogeneous catalyst exhibits activities and selectivities not observed before with other Me-zeolites.

The time-course of metastases from breast cancer after mastectomy and breast-conserving surgery with and without isolated local-regional recurrence.

Breast (Edinburgh, Scotland)

Fodor J, Polgár C, Major T, Mangel LC, Szakolczai I, Számel I, Köves I, Tóth J, Németh G.
PMID: 14965646
Breast. 2002 Feb;11(1):53-7. doi: 10.1054/brst.2001.0362.

We have examined time intervals between events in 390 metastatic breast cancer (MBC) patients whose distant failure developed within 10 years from initial surgery of Stage I/II disease. All of the patients underwent axillary dissection and mastectomy (n=295) or...

Geometry optimization of crystals by the quasi-independent curvilinear coordinate approximation.

The Journal of chemical physics

Németh K, Challacombe M.
PMID: 16321081
J Chem Phys. 2005 Nov 15;123(19):194112. doi: 10.1063/1.2121569.

The quasi-independent curvilinear coordinate approximation (QUICCA) method [K. Nemeth and M. Challacombe, J. Chem. Phys. 121, 2877 (2004)] is extended to the optimization of crystal structures. We demonstrate that QUICCA is valid under periodic boundary conditions, enabling simultaneous relaxation...

The quasi-independent curvilinear coordinate approximation for geometry optimization.

The Journal of chemical physics

Németh K, Challacombe M.
PMID: 15291597
J Chem Phys. 2004 Aug 15;121(7):2877-85. doi: 10.1063/1.1771636.

This paper presents an efficient alternative to well established algorithms for molecular geometry optimization. This approach exploits the approximate decoupling of molecular energetics in a curvilinear internal coordinate system, allowing separation of the 3N-dimensional optimization problem into an O(N)...

Using a summary measure for multiple quality indicators in primary care: the Summary QUality InDex (SQUID).

Implementation science : IS

Nietert PJ, Wessell AM, Jenkins RG, Feifer C, Nemeth LS, Ornstein SM.
PMID: 17407560
Implement Sci. 2007 Apr 02;2:11. doi: 10.1186/1748-5908-2-11.

BACKGROUND: Assessing the quality of primary care is becoming a priority in national healthcare agendas. Audit and feedback on healthcare quality performance indicators can help improve the quality of care provided. In some instances, fewer numbers of more comprehensive...

Decay of spatially periodic patterns in a nematic liquid crystal.

Physical review. E, Statistical, nonlinear, and soft matter physics

Eber N, Rozanski SA, Németh S, Buka A, Pesch W, Kramer L.
PMID: 15697389
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Dec;70(6):061706. doi: 10.1103/PhysRevE.70.061706. Epub 2004 Dec 23.

A detailed theoretical and experimental analysis of the decay of electroconvection patterns is presented in a planarly aligned nematic liquid crystal. The relaxation time is measured as a function of the wave number of the pattern using a light...

Two-dimensional electronic spectra of an aggregating dye: simultaneous measurement of monomeric and dimeric line-shapes.

Physical chemistry chemical physics : PCCP

Nemeth A, Lukes V, Sperling J, Milota F, Kauffmann HF, Mancal T.
PMID: 19588022
Phys Chem Chem Phys. 2009 Jul 28;11(28):5986-97. doi: 10.1039/b902477h. Epub 2009 May 18.

We present a sequence of two-dimensional electronic spectra of a prototypical cyanine dye, whose spectral properties in aqueous solution are determined by the formation of a monomer-dimer equilibrium. Quantum-chemical methods are utilized to calculate the structure and absorption properties...

Difficulties and perspectives of immunomodulatory therapy with mistletoe lectins and standardized mistletoe extracts in evidence-based medicine.

Evidence-based complementary and alternative medicine : eCAM

Hajtó T, Fodor K, Perjési P, Németh P.
PMID: 19939951
Evid Based Complement Alternat Med. 2011;2011:298972. doi: 10.1093/ecam/nep191. Epub 2011 Jan 09.

Viscum album preparations are aqueous mistletoe plant extracts used in complementary and alternative medicine as immunomodulators in cancer therapy. However, evidence of immunological efficacy of mistletoe extracts (MEs) used in clinical trials is often lacking. Mechanisms involved in anti-tumor...

Characterization of Au-Rh/TiO2 bimetallic nanocatalysts by CO and CH3CN adsorption: XPS, TEM and FTIR measurements.

Journal of nanoscience and nanotechnology

Kiss J, Németh R, Koós A, Raskó J.
PMID: 19504927
J Nanosci Nanotechnol. 2009 Jun;9(6):3828-36. doi: 10.1166/jnn.2009.ns75.

On X-ray photoelectron spectra of the Au-Rh/TiO2 catalysts the position of Au4f peak was practically unaffected by the presence of rhodium, the peak position of Rh3d, however, shifted to lower binding energy with the increase of gold content of...

Showing 13 to 24 of 560 entries