Familiar lymphangioma - a rare form of splenic cyst

Torbiel śledziony jest schorzeniem rzadkim, rozpoznawanym przypadkowo w trakcie badań obrazowych. Ze względu na etiologię torbieli, dzieli się je na pasożytnicze i niepasożytnicze, a te ostatnie - na torbiele prawdziwe i rzekome. W przypadkach torbieli prawdziwych możliwe jest ich rodzinne występowanie. Ze względu na możliwość wystąpienia powikłań torbiele zazwyczaj leczy się operacyjnie, dążąc do zachowania miąższu śledziony. Poniżej przedstawiono przypadek 19-letniego mężczyzny z olbrzymim naczyniakiem chłonnym śledziony. Siostrę chorego operowano kilka lat wcześniej (splenektomia) z powodu identycznej jednostki chorobowej.Splenic cyst is a rare illness of the spleen, accidentally diagnosed via imaging examinations. We divided the cysts into parasitic and non-parasitic (true and false). The true splenic cyst may be hereditary. Cysts usually required surgical treatment due to the possibility of complications developing - minimal invasive techniques are preferred to preserve the spleen. We present a patient with hereditary, familiar lymphangioma, which was diagnosed on the basis of pathological evaluation

Differential Sensing of Saccharides Based on an Array of Fluorinated Benzosiloxaborole Receptors

Fluorinated benzosiloxaboroles–silicon congeners of benzoxaboroles, were synthesized and tested as molecular receptors for mono- and disaccharides. The receptors differed in the Lewis acidity of the boron center as well as in the number of potential binding sites. The calculated stability constants indicated different binding affinity of benzosiloxaborole derivatives towards selected saccharides, enabling their classification using a receptor array-based sensing. Unique fluorescence fingerprints were created on the basis of competitive interactions of the studied receptors with both Alizarin Red S (ARS) and tested saccharide molecules. Detailed chemometric analysis of the obtained fluorescence data (based on partial least squares-discriminant analysis and hierarchical clustering analysis) provided the differential sensing of common saccharides, in particular the differentiation between glucose and fructose. In addition, DFT calculations were carried out to shed light on the binding mechanism under different pH conditions

Choice of design solutions for BREEAM international certificate

The aim of this paper is to describe and explain the influence of BREEAM International system on the choice of design solutions. Authors present the algorithm for implementation during the process of applying for BREEAM certificate. The algorithm was prepared to create a clear scheme that would enable any party of the investment process, especially designers, to understand and effectively go through all the fundamental stages of assessing the performance of the building and to become successfully certified

Choice of design solutions for BREEAM international certificate

The aim of this paper is to describe and explain the influence of BREEAM International system on the choice of design solutions. Authors present the algorithm for implementation during the process of applying for BREEAM certificate. The algorithm was prepared to create a clear scheme that would enable any party of the investment process, especially designers, to understand and effectively go through all the fundamental stages of assessing the performance of the building and to become successfully certified

Mastering SAP ABAP: a complete guide to developing fast, durable, and maintainable ABAP programs in SAP

ABAP is an established and complex programming language in the IT industry. This book will give you confidence in using the latest ABAP programming techniques and applying legacy constructions with the help of practical examples

Kinetics of methane and carbon dioxide sorption and sorption–induced expansion of coal – kinetic equations assessment

The aim of this study was to investigate the ability of kinetic equations to describe the sorption kinetics and expansion rate of solid coal samples. In order to address his issue the sorption kinetics of methane and carbon dioxide on bituminous coals were studied. At the same time, the changes occurring in the sample’s overall dimensions, which accompanied sorption processes, were monitored. Experiments were carried out at high pressure by means of the volumetric method on a cubicoid solid samples. Several literature-based modeling approaches and equations are proposed to fit the kinetic curves of gas deposition, as well as the adequate kinetics of coal swelling. First equation represents the traditional approach to interpret experimental data in terms of fast and slow sorption process and consider the combination of two first-order rate functions. The other empirical kinetic equations are: the pseudo-second-order kinetic equation (PSOE), Elovich equation and the stretched exponential equation (SE). Two of the four equations are suitable to describe the kinetics of methane and carbon dioxide sorption and have been successfully used to quantify the observed dilatometric phenomena rates. The stretched exponential equation gave the best fit to the experimental data

Kinetics of methane and carbon dioxide sorption and sorption–induced expansion of coal – kinetic equations assessment

The aim of this study was to investigate the ability of kinetic equations to describe the sorption kinetics and expansion rate of solid coal samples. In order to address his issue the sorption kinetics of methane and carbon dioxide on bituminous coals were studied. At the same time, the changes occurring in the sample’s overall dimensions, which accompanied sorption processes, were monitored. Experiments were carried out at high pressure by means of the volumetric method on a cubicoid solid samples. Several literature-based modeling approaches and equations are proposed to fit the kinetic curves of gas deposition, as well as the adequate kinetics of coal swelling. First equation represents the traditional approach to interpret experimental data in terms of fast and slow sorption process and consider the combination of two first-order rate functions. The other empirical kinetic equations are: the pseudo-second-order kinetic equation (PSOE), Elovich equation and the stretched exponential equation (SE). Two of the four equations are suitable to describe the kinetics of methane and carbon dioxide sorption and have been successfully used to quantify the observed dilatometric phenomena rates. The stretched exponential equation gave the best fit to the experimental data

Possibilities of Using the Type Bypass Air Bleed in a Single-Flow Jet Engine

The paper outlines the analysis dedicated to possibilities of using the type Bypass air bleed in a single-flow jet engine. Attention is focused on development of formulas for key operational parameters of the engine, such as overall work of the thermal cycle, unit thrust and unit consumption of fuel. Simulation and modelling a single-flow jet engine were carried out for the K-15 engine of a Polish make where an air bleeding of that kind is applied. It was confirmed that such engines offer some slight benefits, in particular in terms of cost-efficiency, and such benefits increase in pace with growth of the mass air flow intensity through the bypass channel

Sequestration of carbon dioxide – influence of coal surface chemistry

The physical gas adsorption is a widely used method for the characterisation of the solids porosity. The water steam, primarilydue to its physicochemical properties and ease of use in the experiment has great potential as a sorbate. When applied to coal, water steam allows to determine the quantity of primary adsorption centers as measurement of interaction of molecules adsorbed to the surface of the adsorbent. In order to determine the adsorption capacity and the chemical nature of the coal surface, adsorption / desorption of water vapour to the selected coals was examined at 303K, using a volumetric method. The presence of water in the coal may affect on the sorption properties of other molecules. The analysis of the results show that the coals of low rank and a high content of oxygen functional groups, which are the active sites, showed a greater affinity to absorbing water molecules. Adsorption isotherms were compiled through approximating the Langmuir and BET linear equation to measurement data. Based on the adsorption equation, the amount of adsorption centers have been specified, which can potentially be involved in the adsorption of CO2 during the injection of gas into the coal seams

Sequestration of carbon dioxide – influence of coal surface chemistry

The physical gas adsorption is a widely used method for the characterisation of the solids porosity. The water steam, primarilydue to its physicochemical properties and ease of use in the experiment has great potential as a sorbate. When applied to coal, water steam allows to determine the quantity of primary adsorption centers as measurement of interaction of molecules adsorbed to the surface of the adsorbent. In order to determine the adsorption capacity and the chemical nature of the coal surface, adsorption / desorption of water vapour to the selected coals was examined at 303K, using a volumetric method. The presence of water in the coal may affect on the sorption properties of other molecules. The analysis of the results show that the coals of low rank and a high content of oxygen functional groups, which are the active sites, showed a greater affinity to absorbing water molecules. Adsorption isotherms were compiled through approximating the Langmuir and BET linear equation to measurement data. Based on the adsorption equation, the amount of adsorption centers have been specified, which can potentially be involved in the adsorption of CO2 during the injection of gas into the coal seams