Robust pinned magnetisation in AIrO iridates, the case of ErIrO and LuIrO flux-grown single crystals.

In addition to complex spin-ice and spin-liquid states of rare-earth pyrochlore oxides, AIrO iridates have been recently proposed to host a cooling-field-controllable antiferromagnetic domain structure of iridium moments. Reliable and profound studies of the magnetic domain structure, including domains' interfaces, have been frequently limited by insufficient sample quality or lack of single crystals. We report the magnetic properties of the for-the-first-time synthesised LuIrO and ErIrO single crystals; focussing on the robust ferromagnetic component of magnetisation present in the material with the antiferromagnetically ordered state of the all-in-all-out (AIAO) type.

Low-temperature properties of magnetically frustrated rare-earth zirconatesZrO.

Rare-earthZrOzirconates have attracted considerable attention of the scientific community for their complex magnetic, electronic and material properties applicable in modern technologies. The light rare-earth members of the series, crystallising in the pyrochlore variant of cubic crystal structure, have been studied in detail. The heavierZrOcompounds have been investigated mainly from the material properties viewpoint, focussing on their thermal properties and stability at high temperature and pressure.

Nd:YAG Single Crystals Grown by the Floating Zone Method in a Laser Furnace.

We report on single crystal growth of laser material Nd:YAG widely used in the applications by the innovative crucible-free floating zone method implemented in an advanced laser optical furnace. We have optimized the parameters for the production of high-quality single crystals of the size typical for laser rods. To reduce the strain and improve machinability, we have developed an afterheater to thermalize the grown part of a single crystal below the hot zone, which is a technique unavailable in common mirror furnaces.

Hysteretic structural changes within five-layered modulated 10M martensite of Ni-Mn-Ga(-Fe).

Modulated structure of Ni-Mn-Ga-based alloys is decisive in their magnetic shape memory (MSM) functionality. However, the precise nature of their five-layered modulated 10M martensite is still an open question. We used x-ray and neutron diffraction experiments on single crystals to investigate structural changes within 10M-modulated martensite of the NiMnGaFeMSM alloy.

Pressure induced superconductivity in a CeRhSisingle crystal-the high pressure study.

Pressure induced superconductivity in non-centrosymmetric CeRhSiand CeIrSicompounds has attracted significant attention of the scientific community since its discovery 15 years ago. Up-to-date, all reported experimental results were obtained employing the hybrid-cylinder piston pressure cells with a maximum reachable pressure of 3 GPa. Present study focuses on the superconducting state at higher, so far unreported, pressures using the Bridgman anvil cell and a CeRhSisingle crystal synthesized by the Sn-true-flux method.

Impact of isoelectronic substitution and hydrostatic pressure on the quantum critical properties of CeRhSi.

There is an ongoing dispute in the community about the absence of a magnetic quantum critical point (QCP) in the noncentrosymmetric heavy fermion compound CeRhSi. In order to explore this question we prepared single crystals of CeRh(SiGe)with= 0.05 and 0.

New type of magnetic structure in the RTX group: TbPdIn.

Anisotropy of bulk magnetic properties and magnetic structure studies of a TbPdIn single crystal by means of bulk magnetization methods and neutron diffraction techniques confirmed the antiferromagnetic order below the Néel temperature 29.5 K. The collinear magnetic structure of Tb magnetic moments aligned along the tetragonal-axis is characterized by a propagation vector= (1/4, 1/4, 1/2), yielding an equal-moment structure with alternating coupling between nearest as well as next-nearest Tb neighbors within the basal plane and antiferromagnetic coupling between the-axis neighbors.

Local atomic arrangement in LaCuAl and LaAuAl by NMR and density functional theory.

CeCuAl and CeAuAl, crystallizing in the non-centrosymmetric BaNiSn tetragonal structure, are known mainly for their unusual neutron scattering spectra involving additional excitations ascribed to vibron quasi-bound quantum state in CeCuAl and anti-crossing of phonon and crystal field excitations in CeAuAl. In this work, we present results of nuclear magnetic resonance (NMR) experiments on their lanthanum analogues-[Formula: see text] and [Formula: see text]. The character of NMR spectra of [Formula: see text], [Formula: see text], and Cu measured in [Formula: see text] and [Formula: see text] is dominated by electric quadrupole interaction.

Low-energy spin dynamics of orthoferrites AFeO (A = Y, La, Bi).

YFeO and LaFeO are members of the rare-earth orthoferrites family with Pbnm space group. Using inelastic neutron scattering, the low-energy spin excitations have been measured around the magnetic Brillouin zone center. Splitting of magnon branches and finite magnon gaps (∼2 meV) are observed for both compounds, where the Dzyaloshinsky-Moriya interactions account for most of this gap with some additional contribution from single-ion anisotropy.

Magnetic Structure and Excitations in CeCuAl System.

CeCuAl crystallizing in the tetragonal BaNiSn-type structure and CeCuAl solid solutions were investigated by means of elastic and inelastic neutron scattering. Powder neutron diffraction brought information on both temperature evolution of crystallographic parameters and magnetic order at low temperatures. No structural change was observed in the investigated temperature range from 1.

The development of specific heat and electrical resistivity in the CeNi(x)Pd(1-x)In series.

Our report describes the anomalous electronic behavior of CeNi(x)Pd(1-x)In compounds studied by specific heat and electrical resistivity measurements. These compounds belong to the large and relatively thoroughly studied group of ternary rare-earth intermetallics crystallizing in the ZrNiAl-type structure. The investigated series shows a transition from the heavy fermion antiferromagnetic system of CePdIn to the valence fluctuating state observed in CeNiIn.

Cardiac rehabilitation in Austria: long term health-related quality of life outcomes.

Background: The goal of cardiac rehabilitation programs is not only to prolong life but also to improve physical functioning, symptoms, well-being, and health-related quality of life (HRQL). The aim of this study was to document the long-term effect of a 1-month inpatient cardiac rehabilitation intervention on HRQL in Austria.

Methods: Patients (N = 487, 64.

Cardiac rehabilitation in Austria: short term quality of life improvements in patients with heart disease.

Background: The goal of cardiac rehabilitation programs is not only to prolong life, but also to improve physical functioning, symptoms, wellbeing and health-related quality of life (HRQL). The aim of the study was to document short-term outcomes of cardiac rehabilitation programs in Austria.

Methods: Consecutive patients (N = 487, 64.

24 hours electrocardiographic monitoring in obese children and adolescents during a 3 weeks low calorie diet (500 kcal).

Twenty-four hour electrographic recordings were made on 36 grossly obese children and adolescents during a 3-week weight reduction regimen with a 525 kcal (2196 kj) mixed diet at weekly intervals. One hundred and ten Holter ECGs were analysed. Weight loss during the treatment was calculated to be 5.

[The effect of concomitant aortic valve insufficiency on the values of Doppler sonographic gradient determination in patients with aortic stenosis].

We examined the influence of concomitant significant aortic incompetence (AI) on Doppler-gradient measurements in valvular aortic stenosis (AS) by comparing catheter and Doppler gradients of 51 patients with isolated AS and of 24 patients with additional AI. In patients with additional AI there was a significantly greater overestimation of the peak-to-peak gradient by the maximal instantaneous Doppler gradient (AS + AI: overestimation 31.0 +/- 17.

Prognostic value of supine scintigraphic heart function and simultaneous conventional exercise response in patients after myocardial infarction.

A total of 240 survivors of one or more myocardial infarctions were consecutively admitted to perform supine exercise radionuclide ventriculography. Within 3 years after the test, 22 died; this group was compared to an age-matched control group of 22 survivors for left and right ventricular function during rest, exercise, and simultaneously assessed exercise performance as well as ECG variables. Evaluation of 3-year survival by linear discriminant analysis revealed an accuracy of 82% for discriminant models using ECG and exercise performance variables.

Radionuclide detection of mild valvular regurgitation: its significance as assessed by Doppler sonography.

Radionuclide ventriculography (RNV) indices of regurgitation, Fourier amplitude ratio (FAR) and additional RNV variables were prospectively compared to Doppler echocardiography (DE) in 108 consecutive patients with no or mild left ventricular regurgitation, to assess RNV accuracy in detecting regurgitation in patients with different cardiac disorders. Exclusion of left ventricular or tricuspid regurgitation allowed investigation of the FAR range at rest and during exercise in a sufficiently large appropriate reference group without regurgitation. FAR, as well as other RNV variables, failed to provide more information for the diagnosis of mild (clinically irrelevant) left ventricular regurgitation than the diagnosis upon admission alone.

[Vasodilator therapy in pulmonary hypertension and chronic obstructive lung disease (COPD). Hemodynamic studies exemplified by nifedipine and nitroglycerin].

In 41 patients with chronic obstructive pulmonary disease (COPD) and pulmonary hypertension, the effects of sublingual administration of 20 mg nifedipine and 0.8 mg nitroglycerin on the hemodynamics were assessed at rest and during bicycle ergometry. Additionally, in six patients, the effects of nifedipine during longterm treatment were analyzed.

Dynamic 123I-HDA myocardial scintigraphy after aortocoronary bypass grafting.

In an attempt to evaluate the dynamics of fatty acid metabolism after aortocoronary bypass grafting (ACBG), ten patients were investigated after ACBG by 123I-HDA myocardial scintigraphy. Tracer kinetics were followed for 90 min and compared to those of 36 nongrafted patients with different underlying heart diseases, including healthy volunteers. Regional analysis and monoexponential curve fitting were used to evaluate t1/2 (half-life of the early period of tracer elimination); biexponential curve analysis was used to calculate Ca/Cb, the ratio of a fast and a slow component of tracer elimination.

Two years' experience with the duromedics bileaflet heart valve prosthesis.

The new Duromedics Bileaflet Cardiac Valve prosthesis has a special moving hinge mechanism for its two leaflets to wash the critical articulation area and thus reduce thrombus formation. Between October 1983 and June 1985, we implanted 278 of these prostheses in 254 patients. We did 114 aortic valve replacements, 109 mitral valve replacements, 34 double valve replacements, and two tricuspid valve replacements.

Functional tricuspid insufficiency: conservative or operative management.

Between 1978 and 1982 mitral valve replacement was performed in a total of 43 patients with mitral valve disease in the presence of functional tricuspid insufficiency (TI). The concomitant tricuspid valve regurgitation was treated conservatively in 17 patients, a Carpentier ring prosthesis was implanted in 9 patients. De Vega annuloplasty was performed in 13 patients and 4 times the valve was replaced with a Hancock bioprosthesis.

[Rare cause of a left ventricular aneurysm in a 10-year-old boy].

A 3-year-old boy had an accident with a blunt chest trauma, 9 years later a left ventricular aneurysm was diagnosed by echocardiography and angiography. The 12-year-old-boy was operated successfully. The pathogenesis of cardiac lesions in association with blunt chest traumas is described, and frequent control examinations in the affected patients are recommended.

Effects in elderly people 67-76 years of age of three-month endurance training on a bicycle ergometer.

Eight women and 4 men, mean age 71.1 years, examined by a clinical check-up participated in a bicycle ergometer training program (12 weeks with 3 training sessions per week). Symptom limited ergometric bicycle tests were performed before and after the training period.