RNA species from locust flight muscle mitochondria with apparent molecular weights of about 0.5 and 0.2 X lo6 have been reported [l-3]. In this paper data are presented which establish the existence of particles in locust muscle mitochondria having essential properties in common with ribosomes from which these RNA species may be derived. The sedimentation constant of these particles was estimat...

The lobula giant motion detector (LGMD) is a wide-field bilateral visual interneuron in North American locusts that acts as an angular threshold detector during the approach of a solid square along a trajectory perpendicular to the long axis of the animal (Gabbiani et al., 1999a). We investigated the dependence of this angular threshold computation on several stimulus parameters that alter the ...

Neurons in a variety of species, both vertebrate and invertebrate, encode the kinematics of objects approaching on a collision course through a time-varying firing rate profile that initially increases, then peaks, and eventually decays as collision becomes imminent. In this temporal profile, the peak firing rate signals when the approaching object's subtended size reaches an angular threshold,...

Pulse-coupled neural network (PCNN) is different from traditional artificial neural networks, which can be applied in many fields, such as image processing. A crucial step in developing automated locust detection system is image segmentation, which aims to identify locusts from images. In this study, a simplified PCNN algorithm was proposed for this purpose. Color images are either converted to...

Black locust (Robinia pseudoacacia L.) is one of the most widespread tree species introduced into Europe and also Hungary. It covers 24% total Hungarian forest area, providing 25% annual timber output country. Due to demands consumers, new cultivars are be produced by means improvement techniques practical forestry use. Mono- multiclonal were developed, then variety comparison trials cultivatio...

Abstract Fine roots (<2 mm in diameter) play a significant role tree growth and stand productivity. However, knowledge of fine root dynamics saline alkali soil remains limited. Using sequential core ingrowth methods, we assessed the aboveground biomass (AGB) production (AGP), (FRB), (FRP) turnover (FRT), properties (water content [SWC], salt [SSC], pH nutrients) 2-, 18-, 32- 42-year-old ...

a Abteilung für Allgemeinund Thoraxchirurgie, Landeskrankenhaus Feldkirch, Austria b Frauenklinik, Städtische Kliniken Esslingen a.N., Germany c Department of Surgery, Wales College of Medicine, Cardiff University, UK d Brustzentrum Zürich, Switzerland e Gynäkologische Abteilung, Landeskrankenhaus, Leoben, f Brustkompetenz-Zentrum, AKH Linz, g Abteilung für Nuklearmedizin und Spezielle Endokrin...