2,007 research outputs found
Soft X-Ray contact microscopy of botanical material using laser-produced plasmas or synchrotron radiation
No full textThe use of soft x-ray contact microscopy (SXCM) allows biological specimens to be imaged with a resolution better than that possible with the light microscope (LM), but not as good as that obtained with the transmission electron microscope (TEM). Unlike TEM however, it is possible to image wet biological specimens that require no pretreatment before imaging. For TEM specimens need to be chemically fixed, dehydrated, embedded and sectioned before examination, any one of these preparative steps can, and does, introduce artefacts, thus the development of any technique which eliminates or reduces the possibility of artefacts will be of great advantage
Review of Historical Events (pg.7)
No full textDr. A.G. Rudovic's description of the history of the Red Army invasions of Latvia, Estonia and Lithuania and what occured when the Soviet Union forcebly incorporated masses of innocent people into Soviet GULAGS and Soviet laour camps by means of mass deportatio: as well as the loss of church spiritual leaders and forbidden church services.2.0 Imanta, 2.1.7 Baltic Nations, 2.1.3 Current Latvian Histopry in Europe ( Pre-Post WWII
Moscow doctor A.G. Dreytser – author of "The Notes of an Ambulance physician"
No full textWe have attempted to present the scientific biography of Alexander Grigorievich Dreytser, the author of "The Notes of an Ambulance physician" – a popular documentary work on the life of Moscow and Muscovites during the Great Patriotic War. We have reconstructed the main points of life and activities of A.G. Dreytser and discovered a number of facts in his biography related to his studying at Strasbourg University (1911–1914) and Imperial Moscow University (1915–1917), participation in the First World War and activities in 1918–1941. The analysis of the materials stored in the State Archive of the Russian Federation, the Central State Archive of the City of Moscow, the Russian State Archive of Literature and Art, as well as the personal archive of the Dreytser family, allowed us to clarify many points related to Dreytser's life and activities during the time prior to the creation of The Notes. This article is based upon the results of a comparative analysis of the texts of The Notes and A.G. Dreytser's Ph.D. dissertation "The Material on the Question of Sudden Death: According to the Data of Morgues, Moscow City Emergency Stations and the Department of Clinical Examination of the Central Polyclinic of the People's Commissariat for Health of the USSR". This article considers the hypothesis of the unity of the events that took place in Moscow during the Great Patriotic War and were described in the dissertation and The Notes. More complete historical and biographical data on A.G. Dreytser allowed us to prove the documentary nature of The Notes, expand the scope of known facts about the organisation of medicine during the war and clarify some circumstances of the history of Russian medicine as a whole
A modified Rayleigh conjecture for static problems
No full textAbstractA modified Rayleigh conjecture (MRC) in scattering theory was proposed and justified by the author [A.G. Ramm, Modified Rayleigh conjecture and applications, J. Phys. A 35 (2002) L357–L361]. The MRC allows one to develop efficient numerical algorithms for solving boundary-value problems. It gives an error estimate for solutions. In this paper the MRC is formulated and proved for static problems
The influence of steady blowing and roughness on transitional separated boundary layers
No full textThis paper presents the results of a study between two types of forcing, namely steady blowing and a tripwire, on the control of laminar separated boundary layers. The analysis focuses on the differences in the transition process between these two types of forcing. This effect will be studied using direct numerical simulation. The main differences consists in the coherent structures formed during transition and the overall kinetic energy growth
Andries Vierlingh, Tractaet van dyckagie (eds. J. de Hullu en A.G. Verhoeven)
No full textTranscriptie uit 1920 van het manuscript van Andries Vierlingh uit 1579 over het ontwerp en de aanleg van dijken. Zijn werk is hoofdzakelijk uitgevoerd in West Brabant. De publicatie uit 1920 is later heruitgegeven door de VBKO (Vereniging van Waterbouwers)
THREE DIMENSIONAL IMAGING IN SCANNING SOFT X-RAY MICROSCOPY
No full textEn reconstruction d'image à trois dimensions, on a besoin d'un ensemble complet de projections d'images bidimensionnelles pour obtenir une reconstruction non-ambiguë de l'objet. En pratique, particulièrement pour le microscope par rayons-X à balayage, l'angle d'inclinaison de l'objet est géométriquement limité et la reconstruction à partir d'un ensemble incomplet de projections sera spatialement déformée. Pour améliorer ceci on utilise l'information a priori Pour un microscope par rayons-X à balayage, l'illumination avec un faisceau en éventail et un réseau linéaire de détecteurs sera adéquate pour donner un ensemble de projections 2-D. Une autre solution qui peut être moins exigeante en ce qui concerne le balayage et l'inclinaison est d'utiliser l'illumination à faisceau conique et un réseau de détecteurs 2-D. Les différences en reconstruction d'image utilisant ces deux systèmes peuvent être étudiées en utilisant un analogue optique en similitude géométrique.In 3-D image reconstruction, a complete set of 2-D image projections are required to give a unique and unambiguous object reconstruction. In practice, particularly for a scanning X-ray microscope, the tilting angle of the object is geometrically restricted and the reconstruction from an incomplete projection set will be spatially distorted; one way to improve this is to use a priori information. For a scanning X-ray microscope, a fan beam illumination and a linear array detector will be adequate to provide a set of 2-D projections. An alternative, which may place less stringent requirements on the scanning and tilting mechanism, is to use cone beam illumination and a 2-D array detector. The differences in image reconstruction using these two systems can be investigated using a geometrically scaled optical analogue
Aquatic Substrate Library - Fitzroy River Estuary 2003
No full textMaintenance and Update Frequency: asNeededStatement: This dataset is part of the NSD Aquatic Spectral Library<b>Purpose</b><br/>Application of spectral data to plant physiology studies, geological sciences, soil sciences, limnology, oceanography and atmospheric chemistry, and other research.Record for source data hosted in the National Spectral Database (NSD) Aquatic Library<br/><br/>Citation:<br/>Dekker, A.G., Brando, V.E., Anstee, J.M., Marks, A., Phinn, S., Roelfsema, C. Scarth, P., (2005). Final Report – Fitzroy Estuary and Port Curtis Remote Sensing Tasks (FE2 and PC2). Dekker, A.G. and Phinn, S (eds), Published by the CRC for Coastal Zone, Estuary and Waterway Management, Indooroopilly, Qld, Australia.<br/><br/>For further information and instructions to access the database go to the following URL:<br/>https://cmi.ga.gov.au/data-products/dea/643/australian-national-spectral-databas
Review of Historical Events
No full textA review of historical events regarding the Latvian Nation in Europe and the present day need to honour the Latvian people and maintain pride in their country.1.0 Imanta, 2.1.3 Current Latvian history in Europe ( Pre & Post WW II), 2.1.7 Baltic Nation
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