288 research outputs found

    Cell-to-cell signaling through light: just a ghost of chance?

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    Roadmap on semiconductor-cell biointerfaces.

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    This roadmap outlines the role semiconductor-based materials play in understanding the complex biophysical dynamics at multiple length scales, as well as the design and implementation of next-generation electronic, optoelectronic, and mechanical devices for biointerfaces. The roadmap emphasizes the advantages of semiconductor building blocks in interfacing, monitoring, and manipulating the activity of biological components, and discusses the possibility of using active semiconductor-cell interfaces for discovering new signaling processes in the biological world

    Glossary on atmospheric electricity and its effects on biology

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    [EN] There is an increasing interest to study the interactions between atmospheric electrical parameters and living organisms at multiple scales. So far, relatively few studies have been published that focus on possible biological effects of atmospheric electric and magnetic fields. To foster future work in this area of multidisciplinary research, here we present a glossary of relevant terms. Its main purpose is to facilitate the process of learning and communication among the different scientific disciplines working on this topic. While some definitions come from existing sources, other concepts have been re-defined to better reflect the existing and emerging scientific needs of this multidisciplinary and transdisciplinary area of research.This paper is based upon work from the COST Action "Atmospheric Electricity Network: coupling with the Earth System, climate and biological systems (ELECTRONET)," supported by COST (European Cooperation in Science and Technology). AO received funding from Poland Ministry of Science and Higher Education for statutory research of the Institute of Geophysics, Polish Academy of Sciences (Grant No 3841/E-41/S/2019).Fdez-Arroyabe, P.; Kourtidis, K.; Haldoupis, C.; Savoska, S.; Matthews, J.; Mir, LM.; Kassomenos, P.... (2021). Glossary on atmospheric electricity and its effects on biology. International Journal of Biometeorology. 65(1):5-29. https://doi.org/10.1007/s00484-020-02013-9S529651Adrovic F (2012) Editor, Gamma radiation, IntechOpen.Alberts B (2014). Molecular biology of the cell (6th ed.). New York. ISBN 9780815344322Ambus Per, (2015) Sophie Zechmeister-Boltenstern Sophie, in Biology of the Nitrogen Cycle, 2007.G.P. Robertson1, P.M. Groffman2, in Soil Microbiology, Ecology and Biochemistry (4th Edition)Apollonio F, Liberti M, Paffi A, Merla C, Marracino P, Denzi A, Marino C, d’Inzeo G (2013) Feasibility for microwaves energy to affect biological systems via nonthermal mechanisms: a systematic approach. 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    Challenges in coupling atmospheric electricity with biological systems

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    The atmosphere is host to a complex electric environment, ranging from a global electric circuit generating fluctuating atmospheric electric fields to local lightning strikes and ions. While research on interactions of organisms with their electrical environment is deeply rooted in the aquatic environment, it has hitherto been confined to interactions with local electrical phenomena and organismal perception of electric fields. However, there is emerging evidence of coupling between large- and small-scale atmospheric electrical phenomena and various biological processes in terrestrial environments that even appear to be tied to continental waters. Here, we synthesize our current understanding of this connectivity, discussing how atmospheric electricity can affect various levels of biological organization across multiple ecosystems. We identify opportunities for research, highlighting its complexity and interdisciplinary nature and draw attention to both conceptual and technical challenges lying ahead of our future understanding of the relationship between atmospheric electricity and the organization and functioning of biological systems

    Lidská spontanní emise fotonu v průběhu 24 hodin

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    Ultra-weak spontaneous photon emission in visible range from palms and hands of dark-accommodated subjects has been measured every two hours in 5 experiments in the course of 24 hours by means of low-noise photomultiplier. Dorsal sides of the hands show higher fluctuations of photon emission intensity than palmar sides. Cycles of fluctuations of the 1 day, 6-8 hours and 3-4 hours long period have been observed from Fourier analysis of the measured data

    Ultra low frequency yeast cells electric activity

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    This paper presents results from the measurement of the electrical activity cold sensitive beta-tubulin mutant tub2-401 of yeast cells in frequency region 0.4 - 1.6 kHz. 25 measurements of both synchronized and nonsynchronized cells show that the synchronized cells have higher electrical activity what corresponds to the findings of Pohl et al. Mechanical oscillations of electrically polar structures in cell may give rise to electric oscillations we measured

    Denní změny intenzity emise fotonu z lidských rukou

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    Spontaneous ultra-weak photon emission in the visible range was measured on palm and dorsal side of left and right hand by means of a low noise photomultiplier system. To study the dynamics of this photon emission in a 24h period photon emission was recorded in 2h intervals in 5 experiments. Mean photon emission over the 24h period differed both between subjects and hand locations. The fluctuations in photon emission in the course of 24h were more at dorsal sides than palm sides
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