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Showing 25 to 36 of 1049 entries
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Sex-dependent risk taking in the collared flycatcher, Ficedula albicollis, when exposed to a predator at the nestling stage.

Animal behaviour

Michl G, Török J, Garamszegi LZ, Tóth L.
PMID: 10715185
Anim Behav. 2000 Mar;59(3):623-628. doi: 10.1006/anbe.1999.1352.

An increased mortality rate is a cost of parental care, and can be high during the provisioning phase of altricial nestlings. When a parent stops feeding the nestlings temporarily after seeing a predator, it can reduce its own predation...

[Expression of HER2 in breast cancer].

Magyar onkologia

Tóth J, Szentkuti A.
PMID: 12050766
Magy Onkol. 2000 Apr 01;44(1):39-51. doi: HUON.2000.44.1.0039.

In breast cancer the membrane expression of HER2 receptor protein encoded by the HER2 proto-oncogene seems to have an ever growing clinical significance. In tissue cultures and animal experiments it was shown that the HER2 gene amplification induces malignant...

[Prognostic factors of breast cancer].

Magyar onkologia

Csuka O, Péley G, Dubecz S, Hargitai A, Tóth K, Kámory E, Köves I, Doleschall Z, Péter I, Tóth J.
PMID: 12050767
Magy Onkol. 2000 Apr 01;44(1):53-60. doi: HUON.2000.44.1.0053.

OBJECTIVES: Characterization of breast cancers by various tumour markers which are appropriate for the identification of high risk groups. Markers related to the metastasis cascade and tumour recurrence have been investigated. MATERIALS AND METHODS: RT-PCR was used to determine...

Interpretation of secondary electron images obtained using a low vacuum SEM.

Ultramicroscopy

Toth M, Thiel BL, Donald AM.
PMID: 12505757
Ultramicroscopy. 2003 Feb-Mar;94(2):71-87. doi: 10.1016/s0304-3991(02)00203-6.

Charging of insulators in a variable pressure environment was investigated in the context of secondary electron (SE) image formation. Sample charging and ionized gas molecules present in a low vacuum specimen chamber can give rise to SE image contrast....

Isothermal flame balls.

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

Jakab E, Horváth D, Merkin JH, Scott SK, Simon PL, Tóth A.
PMID: 12241461
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Jul;66(1):016207. doi: 10.1103/PhysRevE.66.016207. Epub 2002 Jul 15.

The existence of steady, spherically symmetric wave fronts ("isothermal flame balls") in chemical reaction systems exhibiting autocatalysis is demonstrated. Such solutions require relatively high kinetic orders p with respect to the autocatalytic species, with p>5, but occur even with...

Cr(III) and Cr(VI) on-line preconcentration and determination with high performance flow flame emission spectrometry in natural samples.

Analytical and bioanalytical chemistry

Posta J, Gáspár A, Tóth R, Ombódi L.
PMID: 15045352
Anal Bioanal Chem. 1996 Jun;355(5):719-20. doi: 10.1007/s0021663550719.

Methods for the on-line chromatographic preconcentration of Cr(III) and Cr(VI) have been developed. Cr(VI) has been preconcentrated on an RP C18 silica based column with tetrabutylammonium-bromide (TBABr) as ion-pairing agent. Specially for Cr(III) a new and effective preconcentration technique...

Oxidation of chlorine(III) by hypobromous acid: kinetics and mechanism.

Inorganic chemistry

Tóth Z, Fábián I.
PMID: 15074992
Inorg Chem. 2004 Apr 19;43(8):2717-23. doi: 10.1021/ic0354318.

The kinetics and mechanism of the chlorine(III)-HOBr reaction were studied by the stopped-flow method under acidic conditions, pH 1.0-3.0, in 1.0 M NaClO(4) and at 25.0 degrees C. The overall redox process occurs in two consecutive steps via the...

Calculation of the BET-Compatible Surface Area from Any Type I Isotherms Measured above the Critical Temperature.

Journal of colloid and interface science

Tóth J.
PMID: 11254275
J Colloid Interface Sci. 2000 May 15;225(2):378-383. doi: 10.1006/jcis.2000.6723.

In our previous papers [Tóth, J., et al., J. Colloid Interface Sci. 212, 402 (1999); 212, 411 (1999)] it has been proven that a BET-compatible specific surface area, a(s)(c)(N(2), 77), can be calculated from any Type I monolayer isotherms...

Convective instability of an acidity front in Hele-Shaw cells.

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

Bánsági T, Horváth D, Tóth A.
PMID: 14525101
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Aug;68(2):026303. doi: 10.1103/PhysRevE.68.026303. Epub 2003 Aug 07.

Density fingering arising in the acid-catalyzed chlorite-tetrathionate reaction is investigated experimentally in Hele-Shaw cells of various thickness. Upward propagating chemical fronts are stable for all gapwidths examined. The initial evolution of the downward propagating planar fronts resulting in a...

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...

Early mouse embryo development: could epigenetics influence cell fate determination?.

BioEssays : news and reviews in molecular, cellular and developmental biology

Henckel A, Tóth S, Arnaud P.
PMID: 17508391
Bioessays. 2007 Jun;29(6):520-4. doi: 10.1002/bies.20591.

It is generally assumed that the developmental program of embryogenesis relies on epigenetic mechanisms. However, a mechanistic link between epigenetic marks and cell fate decisions had not been established so far. In a recent article, Torres-Padilla and colleagues show...

Output of neurogliaform cells to various neuron types in the human and rat cerebral cortex.

Frontiers in neural circuits

Oláh S, Komlósi G, Szabadics J, Varga C, Tóth E, Barzó P, Tamás G.
PMID: 18946546
Front Neural Circuits. 2007 Nov 02;1:4. doi: 10.3389/neuro.04.004.2007. eCollection 2007.

Neurogliaform cells in the rat elicit combined GABAA and GABAB receptor-mediated postsynaptic responses on cortical pyramidal cells and establish electrical synapses with various interneuron types. However, the involvement of GABAB receptors in postsynaptic effects of neurogliaform cells on other...

Showing 25 to 36 of 1049 entries