12 research outputs found
A fƱrĂ©szlĂĄbĂș szöcske (Saga pedo) elĆkerĂŒlĂ©se kisalföldi homokpusztagyepben
Abstract: Predatory Bush Cricket is one of the largest and most characteristic Orthopteran species of Europe.
The main habitats of the species are natural mosaics of steppe grasslands, low scrubs and open rocky grasslands occurring between 200 and 400 m a.s.l. Occurrences of Saga pedo on flatlands are very rare. This paper
reports about finding specimens of the species in open sandy grassland of Little Hungarian Plain (~100 m
a.s.l.). This is the second known population in Hungary and third population in the Carpathian Basin of Saga
pedo which have been found in flatland sandy grasslands
A Brownian particle in a microscopic periodic potential
We study a model for a massive test particle in a microscopic periodic
potential and interacting with a reservoir of light particles. In the regime
considered, the fluctuations in the test particle's momentum resulting from
collisions typically outweigh the shifts in momentum generated by the periodic
force, and so the force is effectively a perturbative contribution. The
mathematical starting point is an idealized reduced dynamics for the test
particle given by a linear Boltzmann equation. In the limit that the mass ratio
of a single reservoir particle to the test particle tends to zero, we show that
there is convergence to the Ornstein-Uhlenbeck process under the standard
normalizations for the test particle variables. Our analysis is primarily
directed towards bounding the perturbative effect of the periodic potential on
the particle's momentum.Comment: 60 pages. We reorganized the article and made a few simplifications
of the conten
Upravljanje otporno na kvarove modularnim prekidaÄko-reluktantnim strojem nadahnuto prirodom
Fault tolerance is an obligatory feature in safety critical applications (aeronautical, aerospace, medical and military applications, power plants, etc.), where loss of life, environmental disasters, equipment destructions or unplanned downtimes must be avoided. For such applications, a novel bio-inspired motion control system is proposed. All its three components (the switched reluctance machine, the power converter and the control system) are designed to be as fault tolerant as possible. This paper describes all these three fault tolerant components: the bio-inspired control system having self-healing capabilities, the power converter with an extra leg and the fault tolerant modular machine. The theoretical expectations and simulation results are validated by means of laboratory experiments.Otpornost na kvarove je nuĆŸnost u sigurnosno kritiÄnim aplikacijama (aeronautiÄke, zrakoplovne, medicinske i vojne aplikacije, elektrane itd.), gdje je potrebno izbjeÄi smrtne sluÄajeve, prirodne nepogode, uniĆĄtenje opreme ili neplanirane prekide u radu. Za takve aplikacije, predloĆŸen je novi slijedni sustav nadahnut prirodom. Sve tri komponente (prekidaÄko-reluktantni stroj, pretvaraÄ i sustav upravljanja) su projektirani da budu ĆĄto je viĆĄe moguÄe otporni na kvarove. Ovaj rad opisuje sve tri komponente: sustav upravljanja nadahnut prirodom sa samolijeÄeÄim svojstvima, pretvaraÄ s dodatnom granom i modularni stroj otporan na kvarove. Teoretska oÄekivanja i simulacijski rezultati su provjereni laboratorijskim eksperimentima
Secondary tumoural valvulopathy in dog. Case report
This short report describes a case of tricuspid valvular metastasis of canine disseminated histiocytic sarcoma in a 9-year-old female Rottweiler. Immunohistochemically the malignant neoplastic cells gave a strong reaction for vimentin and lysozyme, and showed negativity for serotonin, CD3, CD79a and cytokeratin. The intratumoural microvessels were detected by immunohistochemistry using CD31 and claudin-5. This appears to be the first report of a valvular metastasis of canine malignant histiocytosis
Cutaneous mast cell tumour within a lipoma in a boxer
This report describes a case of a canine cutaneous grade I mast cell tumour which developed within a lipoma in the right axillar region of an 8-year-old male Boxer. Immunohistologically, the neoplastic mast cells were positive for serotonin, CD45 vimentin and p53, and negative for lysozyme, CD3 and CD79a expression. The proliferation index of the mast cell tumour based on the Ki-67 antigen was 6.1%. Between the benign neoplastic lipocytes and mastocytoma tumour cells intratumoural microvessels were detected by immunohistochemical staining using CD31 and claudin-5 as markers for vascular endothelium