40 research outputs found
ImpulzuslĂ©zerekkel mĂłdosĂtott szĂ©n Ă©s szilĂcium felĂŒletek vizsgĂĄlata Raman-spektroszkĂłpiĂĄval Ă©s ellipszometriai mĂłdszerekkel
Sign.: a\p6\s, A-Z\p8/4\s, 2A\p4\s, 2B\p6\s, 2C\p3\sAntepApostillas marxinai
Dolomitnövényzet stabilitåsa és regenerålódåsa = Stability and regeneration of vegetation on dolomite hills
A dolomitgyepek nĂ©hĂĄny Ă©ves idĆszakra vonatkozĂł stabilitĂĄsĂĄt ĂĄllandĂł kvadrĂĄtok vizsgĂĄlatĂĄval az Ă©vtizedes lĂ©ptĂ©kƱ stabilitĂĄst egy 80 kvadrĂĄtos adatsor 23 Ă©v utĂĄni ĂșjrafelvĂ©telezĂ©sĂ©nek adatsorĂĄt elemezve igazoltuk. A sziklagyepek tƱz utĂĄni regenerĂĄlĂłdĂĄsĂĄt leĂ©gett feketefenyves helyĂ©n vizsgĂĄltuk. A fajszĂĄm a tƱz utĂĄn 10 Ă©vvel megközelĂtette a kontroll terĂŒletekĂ©t, mĂg az összborĂtĂĄs 15%-kal elmaradt azokĂ©tĂłl. ĂkolĂłgiai spektrumok szerint a 10 Ă©ves gyepek mĂ©g pionĂr jellegƱek. 3) A Fraxinus ornus morfolĂłgiai plaszticitĂĄsĂĄt vizsgĂĄlva 7 olyan alaki jellemzĆt talĂĄltunk, amelyek jĂłl leĂrjĂĄk a kĆris egyedeket vĂĄltozatos termĆhelyi viszonyok mellett. 4) A feketefenyvesek tƱzveszĂ©lyessĂ©gĂ©nek kutatĂĄsa sorĂĄn vizsgĂĄltuk az Ă©ghetĆ avar felhalmozĂłdĂĄsĂĄt az ĂĄllomĂĄnyok 4 korcsoportjĂĄban. A tƱzgyulladĂĄs valĂłszĂnƱsĂ©gĂ©t McArthur modelljĂ©vel elemeztĂŒk. LeggyĂșlĂ©konyabbnak a 60-80 Ă©ves erdĆk mutatkoztak. 5) A feketefenyveseknek a talajra tett hatĂĄsĂĄt vizsgĂĄlva eredmĂ©nyeink nem igazoltĂĄk a feketefenyvesek "talajjavĂtĂł hatĂĄsĂĄt". 6) A tƱz rendzinĂĄra tett hatĂĄsĂĄnak Ă©rtĂ©kelĂ©sĂ©re 10 Ă©ve, ill. frissen leĂ©gett feketefenyves terĂŒleteket vizsgĂĄltunk. Elöbbiekben a makroelemek szignifikĂĄnsan magasabb koncentrĂĄciĂłjĂșak a fenyvesek talajĂĄhoz viszonyĂtva. A 10 Ă©ve Ă©gett terĂŒletekrĆl kimutattuk, hogy a regenerĂĄlĂłdĂł gyepek talajĂĄban a pH magasabb, a szervesanyag-tartalom viszont alacsonyabb a termĂ©szetközeli sziklagyepekĂ©nĂ©l. | Remarkable stability of dolomite grasslands was proved in both short term (few years) and long terms (two decades) periods. Post-fire regeneration of dolomite grasslands was analysed at burnt Austrian pine stands. 10 years after fire the species number in regenerating grasslands was practically the same as in the control grasslands, however in terms of vegetation cover, life form composition and seed mass spectrum the former grasslands showed pioneer characters. Seeking for a native tree species that could act as substitute for the flammable Austrian pine, we studied manna ash. 7 morphometric variables were determined for satisfactory description of morphological plasticity of manna ash individuals. In the frame of fire risk studies in Austrian pine stands, we determined the litter accumulation in 4 age classes, then, the probability of forest ignition and the fire properties were predicted by McArthur's fire danger model. Results of our pedological studies did not support the (formerly presumed) soil improving role of Austrian pine stands. Effects of fire on rendzina soil was studied in recently burnt and ten-year-old burnt pine plantations. Soil variables at recently burnt sites differed significantly from that of the unburnt stands. In the soil of 10 years old regenerating grasslands pH-value was still higher, whereas organic matter content was still lower than in soils of natural grasslands
A leukocita Ă©s trombocita funkciĂł vĂĄltozĂĄsok prediktĂv Ă©rtĂ©kĂ©nek vizsgĂĄlata intenzĂv betegellĂĄtĂĄst igĂ©nylĆ kĂłrkĂ©pekben = Investigation of predictive values of leukocyte and platelet function changes in critically ill patients
IntenzĂv terĂĄpiĂĄs kezelĂ©st igĂ©nylĆ szĂĄmos kĂłrkĂ©pben közös tĂ©nyezĆ a szervezet szisztĂ©mĂĄs gyulladĂĄsos reakciĂłja, melynek elsĆdleges kivĂĄltĂł oka kĂŒlönbözĆ lehet, de az elĆidĂ©zett vĂĄlaszreakciĂłk nagymĂ©rtĂ©kben hasonlĂłak. A gyulladĂĄsos reakciĂłt a szabadgyökök, citokinek felszaporodĂĄsa, a fehĂ©rvĂ©rsejtek, trombocitĂĄk Ă©s endotĂ©l sejtek aktivĂĄlĂłdĂĄsa kĂsĂ©ri. MunkĂĄnk sorĂĄn betegekbĆl vett vĂ©rmintĂĄkban vizsgĂĄltuk az oxidatĂv stressz Ă©s a gyulladĂĄsos folyamatok markereinek vĂĄltozĂĄsĂĄt: 1. szĂvmƱtĂ©ten ĂĄtesett betegekben; 2. pulmonĂĄlis embĂłliĂĄs betegek trombolĂtikus terĂĄpiĂĄja sorĂĄn; 3. alsĂł vĂ©gtagi revaszkularizĂĄciĂłs mƱtĂ©ten ĂĄtesett betegekben; 4. Ă©gĂ©si traumĂĄt szenvedett betegekben; 5. szeptikus betegekben. A kutatĂĄs eredmĂ©nyei Ășjabb ismeretekkel szolgĂĄltak a szervezet szisztĂ©mĂĄs gyulladĂĄsos vĂĄlaszreakciĂłjĂĄban meghatĂĄrozĂł mechanizmusokrĂłl, melyek kĂłrjelzĆ Ă©rtĂ©kkel bĂrhatnak, alkalmasak lehetnek a terĂĄpiĂĄs beavatkozĂĄsok hatĂĄsossĂĄgĂĄnak megĂtĂ©lĂ©sĂ©re, Ă©s hozzĂĄjĂĄrulhatnak Ășjabb terĂĄpiĂĄs lehetĆsĂ©gek kimunkĂĄlĂĄsĂĄhoz. Az Ășjabb biomarkerek vizsgĂĄlata javĂthatja az intenzĂv betegellĂĄtĂĄst igĂ©nylĆ betegek korai diagnĂłzisĂĄt, Ă©s ennek következtĂ©ben hatĂĄssal lehet e betegek mortalitĂĄsĂĄra Ă©s morbiditĂĄsĂĄra. EredmĂ©nyeinkrĆl a pĂĄlyĂĄzati periĂłdus alatt 44 kongresszusi elĆadĂĄsban Ă©s 14 megjelent (IF: 15,805) közlemĂ©nyben szĂĄmoltunk be. A pĂĄlyĂĄzatban rĂ©sztvevĆ kutatĂłk közĂŒl ketten PhD fokozatot szereztek. | Surgical trauma, thrombosis, embolism, polytrauma, burn injury may induce systemic inflammatory response syndrome (SIRS). The primary cause of SIRS could be different, but the pathomechanism of the inflammatory response is rather similar, involving oxidative stress, platelet, leukocyte, endothelial cell activation and release of different inflammatory mediators. In this project we investigated the changes of oxidative stress markers and inflammatory mediators in blood samples taken from: 1. patients underwent to open heart surgery with or without extracorporeal circulation; 2. patients with pulmonary embolism underwent to thrombolytic therapy; 3. patients with lower limb revascularization surgery; 4. patients with severe burn injury; 5. patients suffering from sepsis following surgical trauma. By monitoring the oxidative stress parameters, platelet and leukocyte function, adhesion molecule and inflammatory antigen expression, ratio of pro- and antiinflammatory cytokines we searched for markers having predictive value to follow up of patient recovery and leading to set up new therapeutic strategies. The use of biomarkers may improve early diagnosis and therapy in critically ill patients, and may consecutively influence the morbidity and mortality of these patients, and may provide promising decision support for the intensive therapeutics to guide the allocation of hospital resources
Autonomous neural information processing by a dynamical memristor circuit
Analog tunable memristors are widely utilized as artificial synapses in
various neural network applications. However, exploiting the dynamical aspects
of their conductance change to implement active neurons is still in its
infancy, awaiting the realization of efficient neural signal recognition
functionalities. Here we experimentally demonstrate an artificial neural
information processing unit that can detect a temporal pattern in a very noisy
environment, fire a single output spike upon successful detection and reset
itself in a fully unsupervised, autonomous manner. This circuit relies on the
dynamical operation of only two memristive blocks: a non-volatile TaO
device and a volatile VO unit. A fading functionality with exponentially
tunable memory time constant enables adaptive operation dynamics, which can be
tailored for the targeted temporal pattern recognition task. In the trained
circuit false input patterns only induce short-term variations. In contrast,
the desired signal activates long-term memory operation of the non-volatile
component, which triggers a firing output of the volatile block.Comment: 11 pages, 6 figure
Stratigraphy, facies and geodynamic settings of Jurassic formations in the BĂŒkk Mountains, North Hungary: its relations with the other areas of the Neotethyan realm.
Jurassic mélange complexes related to the subduction of the Neotethys Ocean occur
in the BĂŒkk Mountains, North Hungary. This paper characterizes the sedimentary sequence of
basin and slope facies that occur in the southwestern part of the BĂŒkk Mountains, placing special
emphasis on the redeposited sedimentary rocks (olistostromes, olistoliths: Mónosbél Group) in order
to obtain information on the provenance of the clasts, and the mode and time of their redeposition.
The series of formations studied shows a general coarsening-upwards trend. Based on radiolarians
and foraminifera, the Mónosbél Group formed in Early to Late Bathonian time. The lower part
of the complex is typified by a predominance of pelagic carbonates, shale and radiolarite with
andesitic volcaniclastic intercalations. The higher part of the succession is characterized by polymictic
olistostromes. Large olistoliths that are predominantly blocks of Bathonian shallow marine limestone
(BĂŒkkzsĂ©rc Limestone) appear in the upper part of the sequence. Based on the biostratigraphic and
sedimentological data, results of analyses of the redeposited clasts and taking into consideration
the concepts of the development of the western Neotethys domain, the evolutionary stages of the
sedimentary basins were defined. The onset of the compressional stage led to initiation of nappe
stacking that led to the formation of polymict olistostromes and then to the redeposition of large
blocks derived from out-of-sequence nappes of the former platform foreland