Modeling of Distributed Ledger Deployment View

The Distributed Ledger Technology (DLT) is a peer-to-peer model of sharing data among collaborating parties in a decentralized manner. An example of DLT is a blockchain where data form blocks in an append-only chain. Software architecture description usually comprises multiple views. The paper concentrates on the Deployment view of the DLT solution within the 1+5 architectural views model. The authors have proposed Unified Modeling Language (UML) extensibility mechanisms to describe the needed additional semantic notation to model deployment details. The paper covers both the network and node levels. The proposed stereotypes and tagged values have enriched the UML Deployment diagram. We have gathered those modeling elements in dedicated UML Profile for Distributed Ledger Deployment. We have applied the profile to model the Deployment view of a renewable energy management system that uses the R3Cordaframework. The system records information about inbound and outbound energy to/from a renewable energy grid

Modeling of Distributed Ledger Deployment View

The Distributed Ledger Technology (DLT) is a peer-to-peer model of sharing data among collaborating parties in a decentralized manner. An example of DLT is a blockchain where data form blocks in an append-only chain. Software architecture description usually comprises multiple views. The paper concentrates on the Deployment view of the DLT solution within the 1+5 architectural views model. The authors have proposed Unified Modeling Language (UML) extensibility mechanisms to describe the needed additional semantic notation to model deployment details. The paper covers both the network and node levels. The proposed stereotypes and tagged values have enriched the UML Deployment diagram. We have gathered those modeling elements in dedicated UML Profile for Distributed Ledger Deployment. We have applied the profile to model the Deployment view of a renewable energy management system that uses the R3Cordaframework. The system records information about inbound and outbound energy to/from a renewable energy grid

učinak propilen-glikola i glicerola na metabolizam ugljikohidrata i masti u kunića - kratko priopćenje

This study examined the effects of glycogenic precursors (propylene glycol and glycerol) on lipid and carbohydrate metabolism of rabbit does fed a restricted diet. The study included 48 females of the Hyplus genetic line, divided into primiparous and multiparous groups. On the 4th day of the restricted diet, the rabbits were orally administered propylene glycol (PG) or glycerol (G), 2 mL/kg body weight0.75. Blood samples were collected immediately prior to administration of the glycogenic precursors and 30, 60, 90, 180, and 360 minutes thereafter. Serum concentrations of glucose, non-esterified fatty acids (NEFA), and β-hydroxybutyric acid were determined. Following the use of both glycogenic precursors, glucose concentration increased after 30 min., which was maintained until the end of the experiment. A significant (P<0.01) decrease in NEFA occurred 120 min after PG was given to primiparous and multiparous does, and remained low up to 360 min after administration. For glycerol, the decrease in NEFA occurred later after 360 min. The mean glucose concentration for the whole period was lower in multiparous females, and higher in primiparous ones. We revealed that both propylene glycol and glycerol showed the evident effect of lipolysis inhibition and gluconeogenesis stimulation, which can be used in practice (e.g. lactation, reproduction).U ovom je radu istraživan učinak glikogenskih pretskazatelja (propilen-glikola i glicerola) na metabolizam masti i ugljikohidrata u kunića hranjenih restriktivnim obrocima. U istraživanje je uključeno 48 ženki genetičke linije Hyplus, podijeljenih u skupine s obzirom na to jesu li primipare ili multipare. Četvrti dan restriktivne hranidbe kunićima je oralno primijenjen propilen-glikol (PG) ili glicerol (G) u dozi od 2 mL/kg tjelesne mase0,75. Uzorci krvi prikupljeni su neposredno prije primjene glikogenskih pretskazatelja te 30, 60, 90, 180 i 360 minuta poslije njihove primjene. Određene su serumske koncentracije glukoze, neesterificiranih masnih kiselina (NEFA) i beta-hidroksimaslačne kiseline. Primjenom obaju glikogenskih pretskazatelja, koncentracija glukoze porasla je nakon 30 minuta i ta se vrijednost zadržala do kraja istraživanja. znakovito smanjenje (P < 0,01) NEFA-e bilo je 120 minuta nakon što je PG primjenjen kod primipara i multipara, te je ostao nizak do 360 minuta nakon primjene. Davanjem glicerola vrijednost NEFA-e smanjila se poslije 360 minuta. Srednja vrijednost glukoze u cijelom tom razdoblju bila je niža u multipara, a viša u primipara. Pokazalo se da i propilen-glikol i glicerol imaju učinak lipolitičke inhibicije i stimulacije glukoneogeneze, što se može primijeniti u praksi, primjerice tijekom laktacije i reprodukcije kunića

Structural studies and selected physical investigations of LiCoO2 obtained by combustion synthesis

Nanocrystalline powders of LiCoO2 were synthesized using a modified solution combustion method, and the effects of the annealing temperature (450-900 degrees C) on structure and composition were investigated using various methods, including XRD, SEM, EPR, and electrical studies. It was found that, as the process temperature increases, the value of the specific surface area decreases, and, hence, the size of the crystallites increases. XRD analysis showed that phase-pure LiCoO2 material was maintained without ad-ditional phases. EPR studies revealed the presence of two Ni3+ complexes resulting from Ni impurities. The electrical properties of the studied LiCoO2 samples were investigated by using impedance spectroscopy. Comparison of the effect of annealing tempera-ture on electrical conductivity shows a very interesting behavior. As the annealing temperature increases, the DC conductivity value increases, reaching a maximum at a temperature of 500 degrees C. However, further increase in the annealing temperature causes a steady decrease in the DC conductivity.Web of Science131482147

3D PET image reconstruction based on Maximum Likelihood Estimation Method (MLEM) algorithm

Positron emission tomographs (PET) do not measure an image directly. Instead, they measure at the boundary of the field-of-view (FOV) of PET tomograph a sinogram that consists of measurements of the sums of all the counts along the lines connecting two detectors. As there is a multitude of detectors build-in typical PET tomograph structure, there are many possible detector pairs that pertain to the measurement. The problem is how to turn this measurement into an image (this is called imaging). Decisive improvement in PET image quality was reached with the introduction of iterative reconstruction techniques. This stage was reached already twenty years ago (with the advent of new powerful computing processors). However, three dimensional (3D) imaging remains still a challenge. The purpose of the image reconstruction algorithm is to process this imperfect count data for a large number (many millions) of lines-of-responce (LOR) and millions of detected photons to produce an image showing the distribution of the labeled molecules in space.Comment: 10 pages, 7 figure

Pleomorphic adenoma of the nasal cavity in a 21 – year – old patient – case report

Introduction and aim: Adenoma pleomorphum (multiform adenoma) is the most popular bening tumor, that originates from the salivary glands. Neoplasm develops mainly from large salivary glands and its occurrence in the nasal cavity is rare and falls mainly in the 3-6 decade of life. Only 1% of all pleomorphic adenomas develop in the nasal and sinus cavities. Despite being a benign tumor, malignant transformation can occur in 2-10% of cases. Description of the case: We report a case of a 21-year-old female ethnically Polish patient with nasal multiform adenoma with initial diagnosis, which indicated a polyp. The final diagnosis was based on the histopathological examination of the resected lesion. The tumor was removed by an endoscopic method with no tissue margins, which may increase the risk of recurrence. Conclusions: Our case demonstrates that despite pleomorphic adenomas typically occurs in the 3rd to 6th decade of life,  clinical symptoms are nondistinctive with a polyp and nasal cavity is a very rare location there should be always be increased vigilance leading to choosing best diagnostic measures to form right diagnosis

Plastic scintillators for positron emission tomography obtained by the bulk polymerization method

This paper describes three methods regarding the production of plastic scintillators. One method appears to be suitable for the manufacturing of plastic scintillator, revealing properties which fulfill the requirements of novel positron emission tomography scanners based on plastic scintillators. The key parameters of the manufacturing process are determined and discussed.Comment: 7 pages, 4 figure

Application of the compress sensing theory for improvement of the TOF resolution in a novel J-PET instrument

Nowadays, in positron emission tomography (PET) systems, a time of fl ight (TOF) information is used to improve the image reconstruction process. In TOF-PET, fast detectors are able to measure the difference in the arrival time of the two gamma rays, with the precision enabling to shorten signifi cantly a range along the line-of-response (LOR) where the annihilation occurred. In the new concept, called J-PET scanner, gamma rays are detected in plastic scintillators. In a single strip of J-PET system, time values are obtained by probing signals in the amplitude domain. Owing to compressive sensing (CS) theory, information about the shape and amplitude of the signals is recovered. In this paper, we demonstrate that based on the acquired signals parameters, a better signal normalization may be provided in order to improve the TOF resolution. The procedure was tested using large sample of data registered by a dedicated detection setup enabling sampling of signals with 50-ps intervals. Experimental setup provided irradiation of a chosen position in the plastic scintillator strip with annihilation gamma quanta