Walter Zapp was born on 4th September 1905 in Riga. In the 1920s, when he was already living in Estonia, Walter Zapp became fascinated with the idea of developing a small precision camera that would produce pictures with no lesser quality than the considerably bigger cameras. A decade later, in 1936 the first Minox camera prototype was ready. Unfortunately, no producer in Estonia was interested...

The term Riga-Fede disease has been used historically to describe a traumatic ulceration that occurs on the ventral surface of the tongue in neonates and infants. It is frequently associated with natal or neonatal teeth but may also occur in older infants after the eruption of primary lower incisors. Failure to diagnose and properly treat this lesion can result in dehydration and inadequate nut...

For the purposes of SemEval-2015 Task-18 on the semantic dependency parsing we combined the best-performing closed track approach from the SemEval-2014 competition with state-of-the-art techniques for FrameNet semantic parsing. In the closed track our system ranked third for the semantic graph accuracy and first for exact labeled match of complete semantic graphs. These results can be attribute...

AIM The aim of the study was to assess the prevalence of apical periodontitis and quality of root canal fillings in an adult Riga subpopulation. MATERIALS AND METHODS Panoramic radiographs of Latvian adults 35-44 year old attending a private dental clinic for the first time during the period of 2004-2008 were included in the study. Totally, 312 out of 1248 panoramic radiographs were randomly ...

The data focused on the value of immunofluorescence on paraffin-embedded sections are controversial, and it is still difficult to obtain reproducible results. The aim of our study was to evaluate the usefulness of immunofluorescence on paraffin-embedded renal section in detecting immune complex deposits in IgA nephropathy (n = 24), membranous glomerulopathy (n = 22) and lupus nephritis (n = 24)...

Riga Technical University, Institute of Technical Physics, Azenes Str. 14-322, LV-1007 Riga, Latvia E-mail: [email protected] In our previous research, the polyisoprene-nanostructured carbon composite (PNCC) has been approved as a promising material to be used as a low-pressure sensor. The main advantage of PNCC is its hyperelastic flexibility as compared with conventional piezo-ceramic pr...

The final stages in the total synthesis of vitamin B12 are reported. It was particularly appropriate, I think, and most pleasant for us this morning to see the splendid film provided by our Russian friends, in which the very successful Symposium at Riga was enshrined for posterity. Appropriate in the sense, from my own point of view, that I did report there at Riga, on the progress we had made ...

the effect of a distributed patch mass on the natural frequency of vibration of a laminated rectangular plate with simply supported boundaries is investigated. the third order displacement field of a composite laminated rectangular plate is defined using the two variable refined plate theory. equations of motion of the plate are obtained with the help of calculus of variation. parametric study ...