John C. Campbell, Ernest Mandel, Marc Rakovski, Harish Kapur, Miklós Molnár,
Tópico(s): European history and politics
1978 - Council on Foreign Relations | Foreign Affairs
An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content.
Tópico(s): Folklore, Mythology, and Literature Studies
1983 - Cambridge University Press | Worldview
Robert M. Cutler, André Haynal, Miklós Molnár, Gerard de Puymége., Linda Butler Koseoglu,
Tópico(s): Cinema and Media Studies
1984 - The MIT Press | The Journal of Interdisciplinary History
The effects of prostaglandin F2α (PGF2α) on intracellular Ca2+ concentration ([Ca2+]i) and inositol phosphate (IP) generation in human myometrial cells were evaluated and compared to the effects of oxytocin. Basal [Ca2+]i levels were 146 and 153 nM in the absence and presence of 1 mm extracellular Ca, respectively. In Ca-containing medium, both PGF2α and oxytocin significantly (P < 0.01) increased [Ca2+]i over control values, eliciting half-maximal stimulation (ED50) at 4 and 1 nm, respectively. In Ca-free ...
Tópico(s): Signaling Pathways in Disease
1990 - Oxford University Press | The Journal of Clinical Endocrinology & Metabolism
The specific binding of prostaglandins (PG) F2 alpha and E2 was studied in a rat myometrial membrane-enriched fraction during the latter part of gestation and parturition, as well as in the postpartal period. Tritiated PGE2 and PGF2 alpha binding was specific, saturable, time dependent, and directly proportional to the amount of membrane protein. Scatchard analysis indicated the presence of high-affinity (Kd2) and low-affinity (Kd2) binding sites for both PGs. The affinity of both binding sites for ...
Tópico(s): Nitric Oxide and Endothelin Effects
1990 - American Physiological Society | AJP Endocrinology and Metabolism
Elikplimi K. Asem, Miklós Molnár, F. Hertelendy,
Digitonin-permeabilized avian granulosa cells were used as a model to study the effects of LH, 8-bromo-cAMP (8-Br-cAMP), and forskolin on intracellular calcium mobilization. LH caused a biphasic calcium efflux. There was a small but significant (P < 0.05) calcium release within 1–2 min (rapid phase) with an ED50 of 35 μg/ml, followed by a larger one after 5 min (slow phase) with an ED50 of 10 ng/ml. The intracellular calcium antagonist TMB-8 inhibited the action of LH in both phases. Forskolin had no ...
Tópico(s): Rabbits: Nutrition, Reproduction, Health
1987 - Oxford University Press | Endocrinology
F. Hertelendy, G. Nemecz, Miklós Molnár,
Previous studies in this laboratory have shown a remarkable increase in the capacity of avian granulosa cells to produce progesterone during the last 2-3 days of folliculogenesis, with concomitant increases in the activities of key steroidogenic enzymes. In view of the proposed involvement of inositol phospholipids and their hydrolytic products in signal transduction in steroidogenic cells, we investigated in this study the influence of follicular maturation on phosphoinositide-specific phospholipase ...
Tópico(s): Hypothalamic control of reproductive hormones
1989 - Oxford University Press | Biology of Reproduction
Fen Zhou, Miklós Molnár, Bernard Cousin,
In this article we study the multicast routing problem in all-optical WDM networks under the spare light splitting constraint. To implement a multicast session, several light-trees may have to be used due to the limited fanouts of network nodes. Although many multicast routing algorithms have been proposed in order to reduce the total number of wavelength channels used (total cost) for a multicast session, the maximum number of wavelengths required in one fiber link (link stress) and the end-to-end ...
Tópico(s): Advanced Photonic Communication Systems
2009 - Springer Science+Business Media | Photonic Network Communications
Mariann Harangi, Hossein Z. Mirdamadi, I. Serés, Ferenc Sztanek, Miklós Molnár, Andrea Kassai, Zoltán Derdák, László Illyés, György Paragh,
Human serum paraoxonase-1 (PON1) protects lipoproteins against oxidation by hydrolyzing lipid peroxides in oxidized low-density lipoprotein (LDL); therefore, it may protect against atherosclerosis. Changes in the ratio of high-density lipoprotein (HDL) subfractions may alter the stability and the antioxidant capacity of PON1. The aim of the study was to examine the effect of atorvastatin treatment on the distribution of HDL subfractions, LDL size, cholesteryl ester transfer protein (CETP), lecithin- ...
Tópico(s): Lipoproteins and Cardiovascular Health
2009 - Elsevier BV | Translational research
Csaba Pribenszky, Eszter Losonczi, Miklós Molnár, Zsolt Láng, Szabolcs Mátyás, Klára Rajczy, Katalin Molnár, Péter Kovács, Péter Nagy, Jason Conceicao, Gábor Vajta,
Single blastocyst transfer is regarded as an efficient way to achieve high pregnancy rates and to avoid multiple pregnancies. Risk of cancellation of transfer due to a lack of available embryos may be reduced by early prediction of blastocyst development. Time-lapse investigation of mouse embryos shows that the time of the first and second cleavage (to the 2- and 3-cell stages, respectively) has a strong predictive value for further development in vitro, while cleavage from the 3-cell to the 4-cell ...
Tópico(s): Renal and related cancers
2009 - Elsevier BV | Reproductive BioMedicine Online
With N omega-nitro-L-arginine, a potent inhibitor of nitric oxide synthesis, we tested the hypothesis that nitric oxide plays a functional role in the blunted pressor responsiveness seen during pregnancy.A group of six pregnant rats were instrumented on the fourteenth day of gestation and studied on days 19 and 20, as well as 7 days post partum. Another group of six virgin rats were similarly prepared and used 5 days after surgery. Blood pressure and heart rate were monitored in conscious freely ...
Tópico(s): Renin-Angiotensin System Studies
1992 - Elsevier BV | American Journal of Obstetrics and Gynecology
F. Hertelendy, Miklós Molnár, Muhammad Jamaluddin,
The primary aim of this study was to evaluate the effects of arachidonic acid (AA) on calcium mobilization from intracellular compartments in digitonin-permeabilized granulosa cells isolated from the largest preovulatory follicles of laying hens. At low concentrations (ED50 0.2 μM) AA released 35% 45Ca from the endoplasmic reticulum (ER), whereas at higher concentrations (ED50 16 μM) it stimulated 45Ca efflux from mitochondria. These effects of AA were mimicked at 10–20 times lower concentration by ...
Tópico(s): Free Radicals and Antioxidants
1992 - Elsevier BV | Molecular and Cellular Endocrinology
F. Hertelendy, Miklós Molnár, Roberto Romero,
Tópico(s): Estrogen and related hormone effects
2002 - SAGE Publishing | Journal of the Society for Gynecologic Investigation
This book offers a comprehensive thousand-year history of the land, people, society, culture and economy of Hungary, from its nebulous origins in the Ural Mountains to the elections of 1988. It tells above all the thrilling story of a people which became a great power in the region and then fought against - and was invaded by - Ottomans, Germans and Soviets. The Hungarian people preserved nevertheless a continuous individuality through its Ural-born language and a specifically Hungaro-European culture. ...
Tópico(s): Hungarian Social, Economic and Educational Studies
2002 - Association of College and Research Libraries | Choice Reviews Online
Miklós Molnár, Tamäs Söto, Tibor Tóth, F. Hertelendy,
OBJECTIVE: Our purpose was to test the hypothesis that chronic inhibition of nitric oxide synthesis in pregnant rats can produce a preeclampsia-like syndrome. STUDY DESIGN: Pregnant rats were instrumented on day 14 of gestation (parturition day 21 to 22) and infused continuously through a venous catheter with L-nitro-arginine, a potent inhibitor of nitric oxide synthase, or with sterile saline solution from day 18 until 24 hours post partum. A group of virgin rats was treated identically. Blood pressure ...
Tópico(s): Nitric Oxide and Endothelin Effects
1994 - Elsevier BV | American Journal of Obstetrics and Gynecology
Miklós Molnár, Tamás Sütö, Tibor Tóth, F. Hertelendy,
OBJECTIVE: Our purpose was to test the hypothesis that chronic inhibition of nitric oxide synthesis in pregnant rats can produce a preeclampsia-like syndrome. STUDY DESIGN: Pregnant rats were instrumented on day 14 of gestation (parturition day 21 to 22) and infused continuously through a venous catheter with L-nitro-arginine, a potent inhibitor of nitric oxide synthase, or with sterile saline solution from day 18 until 24 hours post partum. A group of virgin rats was treated identically. Blood pressure ...
Tópico(s): Nitric Oxide and Endothelin Effects
1994 - Elsevier BV | American Journal of Obstetrics and Gynecology
Csaba Pribenszky, Felipe Siqueira, Miklós Molnár, Andrea Harnos, R. Rumpf,
Vitrification of in vitro (IVP)-produced bovine blastocysts is well established, reaching post-warming hatching rates close to 70–80% in vitro. Nevertheless, improvements still are needed regarding realizable pregnancy rates. High hydrostatic pressure (HHP) treatment of fresh boar semen before freezing increased the litter size achieved by insemination of frozen–thawed boar semen (Kuo et al. 2007 6th Int. Conf. Boar Semen Pres, Alliston, ON, Canada, poster #22); HHP treatment-related improvements were ...
Tópico(s): Reproductive Biology and Fertility
2008 - CSIRO Publishing | Reproduction Fertility and Development
Cs. Pribenszky, Yutao Du, Miklós Molnár, Andrea Harnos, Gábor Vajta,
The present paper describes a method which uses high hydrostatic pressure as a pre-treatment to in vitro matured porcine oocytes to improve their survival rates in the subsequent processes including cryopreservation, parthenogenetic activation and embryo culture. In Experiment I oocytes were treated with different pressure impulses in the range of 20–80 MPa (200–800 times greater than atmospheric pressure) for 30–120 min at 24 °C. For parthenogenetic activation a single dc of 12.5 kV/cm was used, ...
Tópico(s): Sperm and Testicular Function
2008 - Elsevier BV | Animal Reproduction Science
Hamza Drid, Bernard Cousin, Miklós Molnár, Samer Lahoud,
Network survivability is becoming an important issue and a topical subject in WDM optical mesh networks. Many works have studied network survivability. However, few works have focused on survivability in multi-domain optical networks. This paper reviews the literature on survivability against failures in multi-domain optical networks. The main objective of this study is to evaluate and analyze existing solutions and to compare their performance in terms of different criteria: resource utilization, ...
Tópico(s): Advanced Photonic Communication Systems
2010 - Elsevier BV | Computer Communications
Gábor Somlyai, Miklós Molnár, G. Laskay, Mariann Szabó, Tamás Berkényi, Imre Guller, A Kovãcs,
A felszíni vizekben a deutérium (D) koncentrációja több mint 16 mmol/l (150 ppm), az élő szervezetekben 10 mmol/l fölötti. A csökkentett deutériumtartalmú (30±5 ppm) vízzel folyó kutatások során korábban azt tapasztalták, hogy a deutériummegvonás gátolta a sejtosztódást in vitro különböző tumoros sejtvonalakban (PC-3, humán prosztatatumor; MDA, humán emlőtumor; HT-29, humán vastagbéltumor; M14, humán melanoma). A csökkentett deutériumtartalmú víz tumorregressziót idézett elő humán eredetű tumorral xenotranszplantált, ...
Tópico(s): Nuclear Physics and Applications
2010 - Akadémiai Kiadó | Orvosi Hetilap
Csaba Pribenszky, Gábor Vajta, Miklós Molnár, Yutao Du, Lin Lin, Lars Bolund, John L. Yovich,
In vitro culture, storage, and manipulation of gametes and embryos require meticulously adjusted conditions to avoid or minimize the harmful effects of uncontrolled stress. However, recent work indicates that a well-defined and properly applied stress may induce general adaptation and increase tolerance to various in vitro procedures. The aim of this review is to summarize reports on the effects of stress on gametes and embryos of several species. Treatment with sublethal doses of high hydrostatic ...
Tópico(s): Sperm and Testicular Function
2010 - Oxford University Press | Biology of Reproduction
Yutao Du, Csaba Pribenszky, Miklós Molnár, X. Zhang, Huanming Yang, Masashige Kuwayama, A. M. Pedersen, K. Villemoes, Lars Bolund, Gábor Vajta,
The purpose of the present study was to improve cryotolerance using high hydrostatic pressure (HHP) pretreatment of porcine in vitro matured (IVM) oocytes, to facilitate their further developmental competence after parthenogenetic activation. A total of 1668 porcine IVM oocytes were used in our present study. The pressure tolerance and optimal duration of recovery after HHP treatment were determined. Oocytes were treated with either 20 or 40 MPa (200 and 400 times greater than atmospheric pressure) ...
Tópico(s): Seed Germination and Physiology
2007 - Bioscientifica | Reproduction
Gyula Simon, Miklós Molnár, László Gönczy, Bernard Cousin,
Redundant sensing capabilities are often required in sensor network applications due to various reasons, e.g. robustness, fault tolerance, or increased accuracy. At the same time high sensor redundancy offers the possibility of increasing network lifetime by scheduling sleep intervals for some sensors and still providing continuous service with help of the remaining active sensors. In this paper centralized and distributed algorithms are proposed to solve the k-coverage sensing problem and maximize ...
Tópico(s): Distributed Sensor Networks and Detection Algorithms
2007 - Institute of Electrical and Electronics Engineers | Conference proceedings - IEEE Instrumentation/Measurement Technology Conference
Produção Nacional
Revisado por pares
E. Siqueira Filho, Ester Siqueira Caixeta, Csaba Pribenszky, Miklós Molnár, Ákos Horváth, Andrea Harnos, Maurício Machaim Franco, R. Rumpf,
Sublethal stress treatment has been reported to enhance gametes’ performance in subsequent procedures, such as cryopreservation. The aim of the present study was to evaluate the effect of different equilibration times between the termination of a sublethal hydrostatic pressure (HP) stress treatment and the initiation of vitrification on the post-thaw survival, continued in vitro development, hatching rate and gene expression of selected candidate genes of in vitro-produced (IVP) expanded bovine blastocysts. ...
Tópico(s): Sperm and Testicular Function
2011 - CSIRO Publishing | Reproduction Fertility and Development
Fen Zhou, Miklós Molnár, Bernard Cousin, Chunming Qiao,
The construction of light-trees is one of the principal subproblems for all-optical multicast routing in sparse splitting wavelength division multiplexing (WDM) networks. Due to the light splitting constraint and the absence of wavelength converters, several light-trees may be required to establish a multicast session. However, the computation of the cost-optimal multicast light-trees is NP-hard. In this paper, first we study the cost bounds of the light-trees built for a multicast session in unweighted ...
Tópico(s): Advanced Photonic Communication Systems
2011 - | Journal of Optical Communications and Networking
Jennifer M. Sasser, Miklós Molnár, Chris Baylis,
Previous findings suggest a potential therapeutic action of relaxin, the putative vasodilatory signal of normal pregnancy, in some forms of cardiovascular disease. However, the mechanisms underlying the beneficial effects of relaxin have not been fully elucidated. The purpose of this study was to determine whether the vasodilatory effects of relaxin are dependent on activation of NO synthase. We examined the effect of relaxin in male Sprague-Dawley rats given angiotensin II (Ang II; 200 ng/kg per ...
Tópico(s): Pregnancy-related medical research
2011 - Lippincott Williams & Wilkins | Hypertension
Csaba Pribenszky, Miklós Molnár, Ákos Horváth, Andrea Harnos, O. Szenci,
Formerly we reported that a sublethal shock, high hydrostatic pressure (HHP), significantly improves the post-thaw survival of frozen mouse blastocysts and post-thaw motility of frozen bull sperm, presumably from the HHP induced changes in the protein profile [e.g. heat shock proteins (HSPs)] (Pribenszky et al. 2005 Rep. Fert. Dev. 17, 199–200; Pribenszky et al. 2005 Anim. Rep. Sci. 87, 143–150). We now report the effect of HHP on the motility of fresh boar semen, and we compare post-thaw motility of ...
Tópico(s): Bee Products Chemical Analysis
2006 - CSIRO Publishing | Reproduction Fertility and Development
Csaba Pribenszky, Miklós Molnár, Ákos Horváth, Gabriella Kútvölgyi, Andrea Harnos, O. Szenci, J. Dengg, J. Lederer,
Previously, we reported that high hydrostatic pressure (HHP) significantly improves post-thaw survival of frozen mouse and IVP bovine blastocysts, presumably from the induction of shock proteins (Pribenszky et al. 2005 Anim. Repr. Sci. 87, 143–150; 2005 Repr. Dom. Anim. 40, 338). We also have reported increased post-thaw survival of HHP-treated boar and bull semen (Pribenszky et al. 2004 Repr. Fert. Dev. 17, 199–200; 2005 Repr. Fert. Dev. 18, 162–163). We now report further data on the effect of HHP ...
Tópico(s): Seed Germination and Physiology
2006 - CSIRO Publishing | Reproduction Fertility and Development
Miklós Molnár, Alia Bellabas, Samer Lahoud,
In this paper, we define the cost optimal solution of the multi-constrained multicast routing problem. This problem consists in finding a multicast structure that spans a source node and a set of destinations with respect to a set of constraints, while minimizing a cost function. This optimization is particularly interesting for multicast network communications that require Quality of Service (QoS) guarantees. Finding such a structure that satisfies the set of constraints is an NP-hard problem. To ...
Tópico(s): Software-Defined Networks and 5G
2012 - Elsevier BV | Computer Networks
The role of Mg2+ in the binding of ADP and ATP to pig muscle and yeast 3-phosphoglycerate kinases has been studied by equilibrium dialysis. Whereas the Kd of ATP binding varies between 0.17 and 0.23 mM (S.E.M. 0.03 mM) for both enzymes, independently of the presence of Mg2+, the Kd values for ADP and MgADP binding are in the range 0.18-0.27 mM (S.E.M. 0.04 mM) and 0.05-0.06 mM (S.E.M. 0.01 mM) respectively. Thus Mg2+ exclusively tightens the interaction of ADP, but not of ATP, with the protein molecule. ...
Tópico(s): Protein Structure and Dynamics
1993 - Portland Press | Biochemical Journal