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Search Results: 1 - 10 of 957 matches for " Attila Mihalcz "
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Mid-term echocardiographic follow up of left ventricular function with permanent right ventricular pacing in pediatric patients with and without structural heart disease
Tchavdar Shalganov, Dora Paprika, Radu Vatasescu, Attila Kardos, Attila Mihalcz, Laszlo Kornyei, Andras Szatmari, Tamas Szili-Torok
Cardiovascular Ultrasound , 2007, DOI: 10.1186/1476-7120-5-13
Abstract: A group of 99 pediatric patients with previously implanted pacemaker was studied retrospectively. Forty-three patients (21 males) had isolated congenital complete or advanced atrioventricular block. The remaining 56 patients (34 males) had pacing indication in the presence of structural heart disease. Thirty-two of them (21 males) had isolated structural heart disease and the remaining 24 (13 males) had complex congenital heart disease. Patients were followed up for an average of 53 ± 41.4 months with 12-lead electrocardiogram and transthoracic echocardiography. Left ventricular shortening fraction was used as a marker of ventricular function. QRS duration was assessed using leads V5 or II on standard 12-lead electrocardiogram.Left ventricular shortening fraction did not change significantly after pacemaker implantation compared to preimplant values overall and in subgroups. In patients with complex congenital heart malformations shortening fraction decreased significantly during the follow up period. (0.45 ± 0.07 vs 0.35 ± 0.06, p = 0.015). The correlation between the change in left ventricular shortening fraction and the mean increase of paced QRS duration was not significant. Six patients developed dilated cardiomyopathy, which was diagnosed 2 months to 9 years after pacemaker implantation.Chronic right ventricular pacing in pediatric patients with or without structural heart disease does not necessarily result in decline of left ventricular function. In patients with complex congenital heart malformations left ventricular shortening fraction shows significant decrease.Chronic right ventricular (RV) apical pacing alters unfavorably left ventricular (LV) electrical activation, mechanical contraction, cardiac output, myocardial perfusion and histology. Permanent RV pacing may have detrimental effect on LV function and may promote to heart failure in adult patients with LV dysfunction [1-10]. The effect of chronic RV apical pacing on LV performance in pediatric pati
Refinement of Robertson-type uncertainty principles with geometric interpretation
Attila Lovas,Attila Andai
Physics , 2013,
Abstract: A generalisation of the classical covariance for quantum mechanical observables has previously been presented by Gibilisco, Hiai and Petz. Gibilisco and Isola has proved that the usual quantum covariance gives the sharpest inequalities for the determinants of covariance matrices. We introduce a new generalisation of the classical covariance which gives better inequalities than the classical one furthermore it has a direct geometric interpretation.
Measure on gauge invariant symmetric norms
Attila Lovas,Attila Andai
Mathematics , 2015,
Abstract: The concept of a gauge invariant symmetric random norm is elaborated in this paper. We introduce norm processes and show that this kind of stochastic processes are closely related to gauge invariant symmetric random norms. We construct a gauge invariant symmetric random norm on the plain. We define two different extensions of these random norms to higher (even infinite) dimensions. We calculate numerically unit spheres of expected norms in two and three dimensions for the constructed random norm.
Four new Tenthredo Linnaeus, 1758 species from Sikkim (Hymenoptera, Tenthredinidae)
Haris, Attila
Graellsia , 2004,
Abstract: Four new Tenthredo Linnaeus, 1758 species are described from Sikkim, India: T. nigroypsilon sp. n. , T. memoriaescalerai sp. n., T. allantosikkimensis sp. n. and Tenthredo minutosimplicis sp. n. and compared to T. maruana Malaise, 1945, T. variicolor Malaise, 1945, T. maculipennis Malaise, 1945, T. coloripleuris Malaise, 1945 and T. changbuensis Haris, 2000. Se describen cuatro nuevas especies de Tenthredo Linnaeus, 1758 procedentes de Sikkim, India: T. nigroypsilon sp. n., T. memoriaescalerai sp. n., T. allantosikkimensis sp. n. y Tenthredo minutosimplicis sp. n. y se comparan con T. maruana Malaise, 1945, T. variicolor Malaise, 1945, T. maculipennis Malaise, 1945, T. coloripleuris Malaise, 1945 y T. changbuensis Haris, 2000.
New sawflies from Spain (Hymenoptera, Tenthredinidae)
Haris, Attila
Graellsia , 2004,
Abstract: Dolerus varispinus Hartig, 1837; Nematus respondens F rster, 1854; Pristiphora kamtchatica Malaise, 1931 and Pristiphora nievesi sp. n. are recorded from Spain for the first time. The description of Pristiphora nievesi sp. n. is given and compared to P. subbifida (Thomson, 1871); P. carpentieri Konow, 1903 and P. parnasia Konow, 1902. Las especies Dolerus varispinus Hartig, 1837; Nematus respondens F rster, 1854 y Pristiphora kamtchatica Malaise, 1931 se citan por primera vez en Espa a. Se describe Pristiphora nievesi sp. n. y se compara con P. subbifida (Thomson, 1871); P. carpentieri Konow, 1903 y P. parnasia Konow, 1902.
Social Contributions in Romania
Attila Gyorgy
Romanian Journal of Fiscal Policy , 2012,
Abstract: Social contributions have an important impact on payroll policy. Also, social contributions represent a significant budgetary revenue item which can be viewed at the edge between taxation and insurance. Social contributions in Romania experienced many changes which ended in 2008. Nowadays, they are within a long transaction period towards partial externalization of the insurance activity to privately managed funds. The aim of this paper is to analyse the homogeneity of Romanian social security public scheme using annual data extracted from 2002-2009.The main findings reveal that social contributions reached the pinnacle of diversification, being too many, some of them with a small contribution rates; fiscal reforms which reduced contribution rates advantaged employers, and state will be interested to externalize this activity as far private sector will be able to assume this responsibility and the budgetary effects are acceptable for the public finance.
Review Article: Post-Accession Crisis in the New Member States: Progressing or Backsliding in the EU?
Attila Agh
Studies of Transition States and Societies , 2010,
Abstract: The global crisis broke out ‘externally’ when the ‘internal’ institutional crisis in the EU reached its peak. In addition, the new member states were still in the post-accession crisis. These three types of ‘crises’ can be observed: frst, a deep systemic crisis is ongoing in the global world; second, the creative crisis is the usual way of development in the EU; and fnally third, the serious problems, disturbances, troubles in the new member states are transitory as the unavoidable contradiction of Europeanisation within the EU. Nonetheless, in the deepening-widening relationship, the new members are the main losers of the triple crisis, since the global fnancial crisis has broken out when they have been in their most vulnerable situation, so it deteriorates signifcantly their eforts to catch up and reach ‘efective membership’.Two alternative scenarios can be outlined: (1) the ‘post-communist track’ and (2) the ‘completing the membership’ scenario. The frst scenario has been based on the ‘Prague-Vladivostok doctrine’, which presupposes that these ‘post-communist countries’ are basically of the same nature from Prague to Vladivostok and due to the burden of history they are doomed to fail in the process of catching up in the EU. The completing the membership scenario has been based on the Europeanisation process, which indicates that the new member states can reach efective membership by 2015. All in all, a new kind of controversial progress has begun, since the global economic and social crisis with new dangers and new opportunities has accelerated the necessary domestic reforms in the new member states.
The short term and the medium term Health Ministry strategy
Management in Health , 2010,
Prognostic significance of tumor-induced angiogenesis in colorectal cancer
Fenyvesi Attila
Medicinski Pregled , 2003, DOI: 10.2298/mpns0306263f
Abstract: Introduction Tumor-induced angiogenesis is a central pathogenic step in the process of tumor growth, invasion and metastasis. The aim of this study was to analyze the quantitative expression of angiogenesis in colorectal carcinoma and to determine if and how angiogenesis correlates with other clinicopathologic factors and prognosis. Material and methods This study included 40 patients who underwent curative resection of colorectal cancer at the Department of Surgery of the Senta General Hospital with complete 5 years follow-up or till death. Microvessels were identified immunohistochemically using monoclonal CD31 antibodies. The microvessel count was assessed by means of stereology with test grid M42, as well as vascular surface density in the stromal volume at the invasive front of colorectal cancer. Results Tumor-induced angiogenesis count of colorectal carcinomas statistically significantly correlated with stage of disease and histologic tumor grade There was no significant correlation between intratumoral microvessel density and sex and age of patients, localization and histologic tumor type Five-year survival rate in patients with hypervascular colorectal tumors was statistically significantly lower than in patients with hypovascular tumors Thus, microvessel density in colorectal cancer is an independent prognostic factor, but its significance is less than the importance concerning stage of disease and histologic grade of tumor. Conclusions Intratumoral microvessel density quantification in histologic specimens of colorectal carcinoma reflects the biological malignant potential of tumors and may be a useful additional predictive marker. Assessment of intratumoral microvessel count might be used for determining the pathologic stage when adjuvant therapy is concerned. Microvessel density in tumor specimens is valuable in stratifying patients in planning appropriate adjuvant and antiangiogenic therapy after surgery.
Gyorgy Attila
Annals of the University of Oradea : Economic Science , 2009,
Abstract: This article proposes to present some general issues related to budgetary transparency (principles promoted especially in UE and OECD countries). Further, these we analyze how these principles are and could be implemented by Romanian local level. After pr
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