A study on the direct effect of anthropogenic aerosols on near surface air temperature over Southeastern Europe during summer 2000 based on regional climate modeling

In the present work it is investigated the direct shortwave effect of anthropogenic aerosols on the near surface temperature over Southeastern Europe and the atmospheric circulation during summer 2000. In summer 2000, a severe heat-wave and droughts affected many countries in the Balkans. The study is based on two yearly simulations with and without the aerosol feedback of the regional climate model RegCM3 coupled with a simplified aerosol model. The surface radiative forcing associated with the anthropogenic aerosols is negative throughout the European domain with the more negative values in Central and Central-eastern Europe. A basic pattern of the aerosol induced changes in air temperature at the lower troposphere is a decrease over Southeastern Europe and the Balkan Peninsula (up to about 1.2°C) thus weakening the pattern of the climatic temperature anomalies of summer 2000. The aerosol induced changes in air temperature from the lower troposphere to upper troposphere are not correlated with the respective pattern of the surface radiative forcing implying the complexity of the mechanisms linking the aerosol radiative forcing with the induced atmospheric changes through dynamical feedbacks of aerosols on atmospheric circulation. Investigation of the aerosol induced changes in the circulation indicates a southward shift of the subtropical jet stream playing a dominant role for the decrease in near surface air temperature over Southeastern Europe and the Balkan Peninsula. The southward shift of the jet exit region over the Balkan Peninsula causes a relative increase of the upward motion at the northern flank of the jet exit region, a relative increase of clouds, less solar radiation absorbed at the surface and hence relative cooler air temperatures in the lower troposphere between 45° N and 50° N. The southward extension of the lower troposphere aerosol induced negative temperature changes in the latitudinal band 35° N–45° N over the Balkan Peninsula is justified from the prevailing northerly flow advecting the relatively cooler air from the latitudinal band 45° N–50° N towards the lower latitudes. The present regional climate modeling study indicates the important role of anthropogenic aerosols for the regional climate and their dynamical feedback on atmospheric circulation

Case study of atonic internal postpartum haemorrhage following severe preeclampsia and caesarean section

publishersversionPeer reviewe

Research On Solar Energy Collector With Cell Polycarbonate Absorber

A flat plate solar collector with cell polycarbonate absorber and transparent cover has been made and its experimental investigation carried out. The collector consists of a wooden box, into which, a layer of heat insulation with a mirror film and 4 mm thick cell polycarbonate sheet, as the absorber, are placed. The coherence between collector’s efficiency, heat carrier and ambient air temperature, as well as intensity of the solar radiation and heat power in the experimental investigation has been obtained. During the experimental examination the maximum temperature of the heat carrier reached 80˚C at the intensity of solar radiation about 0.8 kW/m2 and ambient air temperature around 32˚C. The efficiency of the collector reached 33-60%, depending on the intensity of solar radiation and surrounding air temperature

Acute Cholecystitis in pregnancy: a case report

publishersversionNon peer reviewe

DEVELOPMENT OF HUMAN BALANCE CAPABILITY TESTING PROTOTYPE

The detection of human balance functional disorders may provide some kind of awareness or even warning about potential problems for human health both in organs responsible for ensuring the balance function and in organs related to fulfilment of other important life functions. Modern world offers some sophisticated solutions which enable not only determination of the human balance functional capacity but also offer some kind of training environment to provide corresponding rehabilitation. Unfortunately, such systems are very expensive. And this make limitations of their accessibility and practical usability for a wide range of the target group / population. Software solutions, including mobile applications, on the other hand, are incomparably cheaper. However, they do not allow to make precise balance capability measurements, limiting to simplified balance retention simulators. During implementation of the Latvian National State Research Program VPP INOSOCTEREHI from 2015 to 2017 three human balance capability testing prototypes were developed using a variety of electronic and mechatronic solutions. The last one was successfully approbated during two pilots in Latvian schools in 2016 and demonstrated at the International Invention and Innovation Exhibition MINOX-2016. This paper analyses benefits and disadvantages of approaches used in creating of these prototypes. Besides, authors make initial comparison of developed third prototype version against the BioSway system offered in the market. The paper gives also insight into particular system interface development and new effective graphic portrayal of the balance testing output data, as well as sets the goals for further possible commercialization of the developed balance testing prototype

Transplante de medula ossea em anemia de Fanconi

Resumo: Esta dissertacao de mestrado teve por objetivo rever a literatura sobre transplante de medula ossea em anemia de Fanconi, demonstrar a viabilidade de TMO em AF em nosso meio, analisar os nossos resultados de dez casos transplantados por esta doenca, e comparar com os resultados dos grupos com a maior experiencia mundial, que sao os de Gluckman, Hows e Seattle, com o que pudemos notar uma incidencia variavel de complicacoes, principalmente em relacao a doenca enxerto contra hospedeiro aguda e cronica e rejeicao, diferenca explicavel pelo pequeno numero absoluto de pacientes ou talvez por diferencas institucionais de amostragem. Porem constatamos os mesmos efeitos toxicos da ciclofosfamida em altas doses nestes pacientes peculiarmente hipersensiveis a agentes alquilantes. Tivemos sobretudo uma sobrevida global comparavel. Tambem ficamos alertados para a necessidade de desenvolvermos e aperfeicoarmos novas tecnicas de condicionamento, com toxicidade aceitavel, para esta grave e invariavelmente fatal doenca, curavel apenas com transplante de medula ossea

Actualities of balance diagnostics system model development for persons with disabilities

In Latvia so far there have not been made comprehensive studies to provide balance function diagnostics for people with disabilities, which would have to continue with further creation of appropriate system. However, Latvian researchers developed methods and technology for the rehabilitation and health improvement. At the same time it is also recognized that there is a lack of dedicated efficient and widely accessible for patients systems, equipment and tools to make balance function and dysfunction diagnostics, as well an improvement of the patients’ movement capabilities. This position paper gives a brief overview about the latest technical engineering solution trends and developments in the world, which could be suited and developed to create the conformable new, rather simple, accessible and cheap system. Such system will have to ensure the diagnostics of balance functions of the persons with disabilities and encourage them to use mentioned equipment for testing and training of their balance and movement functionality

Deep stratosphere-to-troposphere transport (STT) over SE Europe: a complex case study captured by enhanced ⁷Be concentrations at the surface of a low topography region

International audienceIn this study we present a complex case study of a Stratosphere-to-Troposphere Transport (STT) event down to the surface of a low topography region in Northern Greece, during the second fortnight of March 2000. During this event our surface station at Livadi (23°15 E/40°32 N, 850 m a.s.l.), was influenced by very different synoptic systems developing over Eastern Europe, N. America and the N. Atlantic, the last one evolving to a cut-off low over France/Spain. This is the first study, to our knowledge, that presents a down to the surface STT event in the eastern Mediterranean. The intrusion is primarily captured with the use of the cosmogenic radionuclide 7Be, which increased to 9.07 mBq m-3 and 9.37 mBq m-3 on 30 and 31 March 2000, respectively. A 7Be concentration of around 8 mBq m-3 recorded during parallel measurements at Thessaloniki (20 m a.s.l.) gives strong evidence that air of stratospheric origins has even gone down to sea level. A rapid increase of 10?15 ppb is also observed in the surface ozone concentration on 31 March 2000. The relative increase of both tracers is consistent with a volume fraction of stratospheric air at the surface of about 5%, but the substantial increase in 7Be flags more clearly the event. Trajectory analyses, in conjunction with the evolution of the synoptic situation described by potential vorticity maps, are used for the exact identification of the different intrusions and the attribution of each intruding parcel of stratospheric air to a certain filament of high PV. Finally, the persistency of the stratospheric layers in the troposphere is another interesting point of this case study. The vast majority of the trajectories spent 7?10 days in the troposphere before reaching the surface at Livadi station

Sources of inversion variation in the small single copy (SSC) region of chloroplast genomes

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141571/1/ajb21751.pd