In dense clusters of neurons in nuclei, cells may interconnect via soma-to-soma interactions, in addition to conventional synaptic connections. We illustrate this idea with a multi-layer architecture (MLA) composed of multiple clusters of recurrent sub-networks of spiking Random Neural Networks (RNN) with dense soma-to-soma interactions. We use this RNN-MLA architecture for deep learning. The i...

A new type of cosmic-ray experiment is under construction in the Pyhäsalmi mine in the underground laboratory of the University of Oulu, Finland. It aims to study the composition of cosmic rays at and above the knee region. The experiment, called EMMA, will cover approximately 150 m of detector area. The array is capable of measuring the multiplicity and the lateral distribution of underground ...

Calcium dynamics in leech neurons were studied using a fast CCD camera. Fluorescence changes (DeltaF/F) of the membrane impermeable calcium indicator Oregon Green were measured. The dye was pressure injected into the soma of neurons under investigation. DeltaF/F caused by a single action potential (AP) in mechanosensory neurons had approximately the same amplitude and time course in the soma an...

Soma-germline interactions play conserved essential roles in regulating cell proliferation, differentiation, patterning and homeostasis in the gonad. In theDrosophila testis, secreted signallingmolecules of the JAK-STAT, Hedgehog, BMP and EGF pathways are used to mediate soma-germline communication. Here, we demonstrate that gap junctions may also mediate direct, bi-directional signalling betwe...

What is the diierence between the eeerent spike train of a neuron with a large soma versus that of a neuron with a small soma? For both the two-compartment integrate-and-re (IF) model and the Pinsky-Rinzel (PR) model, we use a method we call the decoupling approach, to show that the smaller the soma is, the faster and the more irregularly the neuron res. Two limiting cases: the soma is much sma...

abandoned surface mine excavations can be a major environmental, social and/or human healthproblem for the mining industry as well as for the community living nearby. this problem is exacerbated by therapidly growing population encroaching on areas of historic mined lands. the aim of this studywas to assess thesafety status of the historic nyala mine excavation with the purpose of coming up wit...

Aktif karbon, yüksek yüzey alanı ve adsorpsiyon özellikleri nedeniyle yaygın olarak kullanılmaktadır. karbon üretimi için farklı birçok kaynak (kömür, fındık kabuğu, saman vb.) kullanılarak kimyasal veya fiziksel aktivasyon işlemleri uygulanmaktadır. Kullanılan her bir kaynağın kapasitesi farklıdır. Ülkemizde kömür kaynağı yapılması konusunda pek çok çalışma yapılmaktadır. Kömürle yapılan çalış...

The activities of mining exploitation in Campo de Jales were performed in an uncontrolled way and gave rise to serious environmental contamination: rubbish depositories have been accumulated with no treatment or maintenance. An investigation developed around Jales Mine showed the existence of some chemical impact originated from the waste produced during mining activities. Some "black spots" fo...