Nuclear Physics Institute of the Czech Academy Sciences (NPI CAS) in Rez operates compact accelerator-driven NG-2 fast neutron source. The source uses proton (up to 35 MeV) and deuteron 20 beams extracted from isochronous cyclotron U-120M beryllium target station for broad spectrum production lithium quasi-monoenergetic field (the p+Li(C) reaction on thin target). These sources are primarily fo...

Numerical simulations were conducted for fully developed, steady-state flow with mass transfer in fiber bundles arranged regular lattices. The porosity was 0.5 and the Schmidt number 500. Several combinations of axial flow, transverse attack angles cross-section plane considered. Reynolds numbers Rez, ReT made to vary from 10−4 102. Concentration boundary conditions, definition an average Sherw...

The tropical montane cloud forests (TMCF) of the Talamanca Mountains Costa Rica are a unique and understudied habitat that is home to high number endemic bird species. Cloudbridge Nature Reserve TMCF reforestation reserve lying on Pacific slope Cerro Chirripó in cantón Pérez Zeledón. Here, we synthesize data collected at between March 2016 May 2020 fr...

Finally, there are also cases Consejo Superior de Investigaciones Científicas in which the A domain plays only a small role in transcrip-28049 Madrid tional activity, either because its control depends on an Spain additional factor (such as the NifA protein, regulated by NifL) (Austin et al., 1990; Berger et al., 1994) or because the A domain does not exist as such (as is the case with Summary ...

cc This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/ licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. JMD Dear Editor, Classical hemifacial spasm (HFS) has been attributed to an atraumatic p...

En este artículo mostraré el caso de dos religiosas que durante los siglos XVII y XVIII dieron cuenta una particular vivencia sobrenatural: viaje a tierras lejanas no cristianas. Hablo Úrsula Suárez, monja clarisa chilena (1666-1749), Francisca Ángeles, beata Querétaro (1674-1744). Los viajes experimentaron se dan en marco experiencia visionaria, donde es cuerpo traslada, sino espíritu. ...

Cyclotrons used to produce medical isotopes are relatively widespread. Nowadays, it is popular place small and compact accelerators directly in hospitals. This approach simplifies handling of the produced radiopharmaceuticals, but imposes strict radiation safety measures during production. For optimal utilization isotope production cyclotrons, exact knowledge leakage neutron field essential due...