Stochastically positive structures on Weyl algebras. The case of quasi-free states

We consider quasi-free stochastically positive ground and thermal states on Weyl algebras in Euclidean time formulation. In particular, we obtain a new derivation of a general form of thermal quasi-free state and give conditions when such state is stochastically positive i.e. when it defines periodic stochastic process with respect to Euclidean time, so called thermal process. Then we show that thermal process completely determines modular structure canonically associated with quasi-free state on Weyl algebra. We discuss a variety of examples connected with free field theories on globally hyperbolic stationary space-times and models of quantum statistical mechanics.Comment: 46 pages, amste

Digital heritage construction: Testing the heritage value of construction documentation and building processes through Virtual Reality

This research paper examines the heritage value of construction documentation and processes via Virtual Reality (VR), with a focus on the Sydney Opera House (SOH). It underscores the importance of comprehending and documenting transient construction techniques for heritage valuation. Utilising VR, the study offers an immersive portrayal of the SOH's construction, emphasising its innovative methods, craftsmanship, and environmental challenges. The paper draws from the Digital Heritage Construction project, showcased at the Heritage Exposition of the ICOMOS General Assembly 2023. This project featured two VR simulations, developed through analysing 200 original shop drawings, historical photographs, and site minutes and reports. The first simulation illustrates the formwork systems used for the SOH's iconic sails, while the second elucidates the assembly methods for the precast vaulted roofs, including the operation of the telescopic erection arch and the installation of concrete segments. The paper examines the novelty of this approach through a survey conducted at the Heritage Exposition. Analysis of the survey's result reveals VR's effectiveness in deepening the appreciation of architectural heritage's intangible qualities, providing new insights into the historical construction processes of the building and their cultural significance

The immunohystochemical characteristics of mesenchymal stem cells of the umbellico-placentar complex

Laboratorul de inginerie tisulară şi culturi celulare, Catedra de anatomia a omului, Universitatea de Stat de Medicină și Farmacie „Nicolae Testemiţanu”, Chişinău, Republica Moldova, Conferința Ştiinţifică Internaţională ”Probleme actuale ale morfologiei” dedicată celor 70 de ani de la fondarea Universității de Stat de Medicină și Farmacie „Nicolae Testemiţanu”, Chişinău, 15-16 octombrie 2015Abstract The actual research presents the results obtained by studying the receptors characteristic for the mesenchymal stem cells of the umbilical cord and placenta using the immunohistochemical methods as follows CD 34, CD 105, AC (CD) 133 and VEGFR 2 (CD 309). The studied structures are rich in mesenchymal stem cells, which could be used for the collection, preserving, cultivation and following cellular transplantation in different diseases

EFFECT OF CA2+ AND AL3+ IONS ON INTERACTION BETWEEN BACTERIA AND MINERAL SORBENTS

No abstrac

Morphology of the paravascular connective tissue of the funiculotesticular complex in men

Catedra de anatomie a omului, Universitatea de Stat de Medicină și Farmacie „Nicolae Testemițanu”, Chişinău, Republica Moldova, Conferința Ştiinţifică Internaţională ”Probleme actuale ale morfologiei” dedicată celor 70 de ani de la fondarea Universității de Stat de Medicină și Farmacie „Nicolae Testemiţanu”, Chişinău, 15-16 octombrie 2015Abstract Background: The hemodynamics of each organ is determined not only by special peculiarities of the wall of blood vessels and their pressure but also by extravascular formations as well different elements of paravasal tissue. Protection and decreasing level of injuring of these structures, in surgical interventions, follow to better and ideal regeneration of the nearby tissues. Material and methods: There were examined 65 total anatomical samples of the human funiculotesticular complex (FTC) in different stages of ontogenesis. There were next procedures used for putting in evidence and macromicroscopically investigate the paravascular elements: method of staining by Schiff reactive, Gomori and Karnovsky-Ruts methods. Results: The research of the total anatomical samples prove the presence in the FTC of different paravasal formations, which are divided in next groups: a) anchoring filaments which start from capsule of the fat lobules; b) fibrous cords that looks as staples, that connect blood vessels to internal surface of the tunica albuginea; formations which have connected to convex surface of the vascular curvatures; fibrous cord starts from venous wall into surrounding tissue and fascia of cremasteric muscles. Intratesticular vessels are hooked to internal surface of tunica albuginea by singular fascicules of dens connective tissue, which protect the spermatogenesis in seminiforous canaliculi aganset negative influence of the variation of arterial blood pressure. Conclusions: The diversity of the paravascular formations maintains the organic integrity of all elements of FTC, keep open the lumen of pampiniform plexus veins, facilitating the blood flow through them. Key words: funiculotesticular complex, pampiniform plexus, fibrous cords

SORPTION OF ADENOVIRUS TYPE 7 AND ECHO-VIRUS TYPE 19 ONTO A NATURAL MINERAL SORBENT

No abstrac

Application features of new pigments in alkyd anticorrosive primers

Article is devoted to valuation the possibility of using new synthesized compounds as anticorrosive pigments in natural drying alkyd primers. Technical and physical properties of new pigments based on transition metal compounds of different nature (oxides, phosphates, car-bides, complex compounds) and phosphorus-containing pigments was investigated, new reci-pes of primers was designed, physical, mechanical and protective properties of coatings was investigated. Dependence of the anticorrosive properties of the synthesized pigments, primers and coatings was established from their chemical nature

Иннервация суставной капсулы и связок тазобедренного сустава в норме и туберкулёзном коксите

Universitatea de Stat de Medicină şi Farmacie „NicolaeTestemiţanu”, Chişinău, Republica Moldova, Conferinţa Știinţifică Internaţională ”Probleme actuale ale morfologiei” dedicată сentenarului profesorului B.Z. Perlin, Chişinău, 20-22 septembrie 2012In the hip joint’ s nervous system, there occur great changes in tuberculosis of joints. Destructive, reactive and regenerative modifications of the peripheral nervous system at the microscopic level of the coxo-femoral joint’ s capsule and ligaments are described. При туберкулёзном коксите развиваются выраженные изменения в нервном аппарате тазобедренного сустава. Микроскопически на уровне суставной капсулы и связок сустава выявлены деструктивные, реактивные и регенеративные изменения нервных волокон и окончаний

Ontological model for data processing organization in information and communication networks

The functioning of modern information and communication networks is impossible without data processing. With the emergence of new network services, the amount of information that needs to be processed increases, while the requirements to the data processing quality become more and more stringent. Therefore, the problem of designing and maintaining a scalable data processing system with a flexible quality of service management is becoming more and more important for a network operator. Such data processing systems have a complex internal structure with many interrelated parameters, which makes them difficult to analyze, manage, and expand. This study proposes to use an ontological model to store, represent, and manipulate the information in the operator’s data processing system. The ontological model allows to structure and systematize the data of an information processing system, and transparently reflects the relationships between the parameters of the system to simplify its analysis and scaling. The proposed ontology of a data processing system consists of three related subsystems. The paper describes the proposed ontological model and additionally analyzes the sources of information that needs to be processed in the information and communication network