Low-Temperature Predicted Structures of AgS (Silver Sulfide).

Silver sulfide phases, such as body-centered cubic argentite and monoclinic acanthite, are widely known. Traditionally, acanthite is regarded as the only low-temperature phase of silver sulfide. However, the possible existence of other low-temperature phases of silver sulfide cannot be ruled out.

Viscosity Measurement of CO-Solvent Mixtures for the Study of the Morphology and Size of Crystalline Particles Obtained Using Supercritical Antisolvent Precipitation.

The viscosity values of CO-dimethylphormamide, chloroform, methanol, isopropanol, ethyl acetate, acetone, and dimethyl sulfoxide mixtures were measured at a pressure of 150 bar and a temperature of 313 K. The correlation of the mean size of levofloxacin hydrochloride and malonic acid particles precipitated using the SAS method with the viscosity of the used CO-solvent mixtures is shown. The high viscosity of the mixtures leads to slower mixing of the solution and the antisolvent.

SALE OF FALSIFIED MEDICINES VIA THE INTERNET IN UKRAINE: PROBLEMS OF DETECTION AND COUNTERACTION.

Objective: The aim: The purpose of the article is to identify and analyze problematic theoretical and practical aspects related to the sale of counterfeit medicines via the Internet and measures to counteract the spread of their counterfeit products, as well as to search for evidence-based ways to improve the regulatory and legal mechanism that regulates the activities of the pharmaceutical business in Ukraine.

Patients And Methods: Materials and methods: The research based by the analysis of international acts, conventions and national legislation of Ukraine in the sphere of trade medi¬cines via the Internet, scientific achievements in this area. Methodologically, this work is based on the system of methods, scientific approaches, techniques and principles with the help of which the realization of the research aim is carried out.

Anterior tibial artery pseudoaneurysm after ankle arthroscopy and Brostrom procedure treated with thrombin injection.

Ankle arthroscopy and the Brostrom procedure are common interventions for ankle instability, but they do carry a risk of vascular injury resulting in a pseudoaneurysm. We present a rare case of anterior tibial artery pseudoaneurysm after ankle arthroscopy and Brostrom procedure treated with direct thrombin injection. A 40-year-old male patient presented with progressive left anterior ankle pain and swelling 5 months after a left ankle arthroscopy and Brostrom procedure.

Adsorption of ,,','-Tetraoctyl Diglycolamide on Hypercrosslinked Polysterene from a Supercritical Carbon Dioxide Medium.

The work considers for the first time the preparation of sorbents based on hypercrosslinked polysterene (HCP) and chelating agent ,,','-tetraoctyl diglycolamide (TODGA) by impregnation in the supercritical (SC) CO medium. Such sorbents can be applied for further isolation and separation of lanthanides, actinides and other metals. They are usually prepared by impregnation in toxic organic solvents (e.

Disorder-order and order-order phase transformations in TaC phases predicted using the evolutionary algorithm and symmetry analysis.

A search for stable ordered phases in the nonstoichiometric cubic tantalum carbide TaC0.8 has been performed by use of the evolutionary algorithm and symmetry analysis. Four stable Ta5C4 superstructures with tetragonal, monoclinic, orthorhombic, and triclinic symmetry have been predicted for the first time.

Universal moments of accelerations in two-dimensional turbulence.

We consider two-dimensional turbulence in the presence of a condensate. The nondiagonal correlation functions of the Lagrangian accelerations are calculated, and it is shown that they have the same universality properties as the nondiagonal correlation functions of the velocity fluctuations.

Silver holographic gratings as substrates for surface-enhanced Raman scattering gas analysis.

This work is devoted to the investigation of the enhancement of Raman signals of nonadsorbed gases in the vicinity of corrugated metallic surfaces supporting propagating surface plasmon-polaritons (PSPPs). Simulation of the PSPP excitation efficiency on holographic gratings coated with silver films of various thicknesses at different groove heights was carried out. Verification showed good agreement between theory and experiment.

Unusual effect of flow rate on retention in analytical supercritical fluid chromatography exemplified by polyethylene glycol separation.

We report a case of a peculiar effect of flow rate on retention in a separation of polyethylene glycol oligomers via supercritical fluid chromatography. During method development, we tested flow rate gradients and notices that for some PEG oligomers retention times at flow rate gradient were lower than at constant flow with the largest flow rate value used in a gradient. For instance, at BEH stationary phase and CO-MeOH gradient from 10 to 35% at 20 min a PEG oligomer having mass of 1225 Da has a retention time 14 min at 1 mL/min flow rate, 10.

Flexible Polycaprolactone and Polycaprolactone/Graphene Scaffolds for Tissue Engineering.

Developing bone scaffolds can greatly improve the patient's quality of life by accelerating the rehabilitation process. In this paper, we studied the process of composite polycaprolactone supercritical foaming for tissue engineering. The influence of graphene oxide and reduced graphene oxide on the foaming parameters was studied.

[IATROGENIC CRIMES: ISSUES OF THE INVESTIGATION TECHNIQUE].

The objective of the article is to define the concept of iatrogenic crimes, the specifics of their forensic characteristics, the circumstances to be established and studied, and the development of tactics for the main investigative actions. To achieve this objective, the authors have used general scientific and special methods of cognition, chosen according to the objective of the paper. So, the circumstances to be established and studied during the investigation of cases involving iatrogenic crimes have been determined with the help of the method of legal analysis.

Unexpected separate elution of cation and anion of an ammonium salt in supercritical fluid chromatography.

Amines are frequently used as additives in supercritical fluid chromatography (SFC). They allow eluting basic analytes with reasonable retention times and less distorted peak shapes. Since amines are chemically active compounds, their introduction into SFC mobile phase always raises a question on whether they can react with analytes or mobile phase constituents and, if so, can it affect chromatography separation.

Statistical symmetry restoration in fully developed turbulence: Renormalization group analysis of two models.

In this paper we consider the model of incompressible fluid described by the stochastic Navier-Stokes equation with finite correlation time of a random force. Inertial-range asymptotic behavior of fully developed turbulence is studied by means of the field theoretic renormalization group within the one-loop approximation. It is corroborated that regardless of the values of model parameters and initial data the inertial-range behavior of the model is described by the limiting case of vanishing correlation time.

Turbulent compressible fluid: Renormalization group analysis, scaling regimes, and anomalous scaling of advected scalar fields.

We study a model of fully developed turbulence of a compressible fluid, based on the stochastic Navier-Stokes equation, by means of the field-theoretic renormalization group. In this approach, scaling properties are related to the fixed points of the renormalization group equations. Previous analysis of this model near the real-world space dimension 3 identified a scaling regime [N.

Anomalous scaling in magnetohydrodynamic turbulence: Effects of anisotropy and compressibility in the kinematic approximation.

The field-theoretic renormalization group and the operator product expansion are applied to the model of passive vector (magnetic) field advected by a random turbulent velocity field. The latter is governed by the Navier-Stokes equation for compressible fluid, subject to external random force with the covariance ∝ δ(t-t')k(4-d-y), where d is the dimension of space and y is an arbitrary exponent. From physics viewpoints, the model describes magnetohydrodynamic turbulence in the so-called kinematic approximation, where the effects of the magnetic field on the dynamics of the fluid are neglected.

[THE EFFECTIVENESS OF ERADICATION IN PATIENTS WITH PEPTIC ULCER DISEASE ASSOCIATED WITH HELICOBACTER PYLORI, DEPENDING ON THE GENOTYPE OF THE DRUGMETABOLISM OF PROTON PUMP INHIBITORS].

One of the most likely causes of the lack of effectiveness of eradication therapy of peptic ulcer associated with Helicobacter pylori, is a feature of omeprazole metabolism by cytochrome CYP2C19. The paper work presents evidence that the rate of reduction of the clinical picture and the likelihood of scarring ulcers and eradication rates higher in patients slow metabolizers of omeprazole.

Anomalous scaling of passive scalar fields advected by the Navier-Stokes velocity ensemble: effects of strong compressibility and large-scale anisotropy.

The field theoretic renormalization group and the operator product expansion are applied to two models of passive scalar quantities (the density and the tracer fields) advected by a random turbulent velocity field. The latter is governed by the Navier-Stokes equation for compressible fluid, subject to external random force with the covariance ∝δ(t-t')k(4-d-y), where d is the dimension of space and y is an arbitrary exponent. The original stochastic problems are reformulated as multiplicatively renormalizable field theoretic models; the corresponding renormalization group equations possess infrared attractive fixed points.

[Challenges and barriers in conducting a clinical trial within an HMO].

Initiating and conducting large controlled clinical trials within an Health Maintenance Organization (HMO) is complex and challenging but also provides a unique opportunity to generate genuine independent research. The authors describe their experience in executing a large scale primary care based clinical trial, without any commercial funding or support. It relied on the organizational and information technology capabilities of the HMO and it's strict quality routines of medical care.

Vitamin E supplementation reduces cardiovascular events in a subgroup of middle-aged individuals with both type 2 diabetes mellitus and the haptoglobin 2-2 genotype: a prospective double-blinded clinical trial.

Objective: Clinical trials of vitamin E have failed to demonstrate a decrease in cardiovascular events. However, these studies did not address possible benefit to subgroups with increased oxidative stress. Haptoglobin (Hp), a major antioxidant protein, is a determinant of cardiovascular events in patients with Type 2 diabetes mellitus (DM).

[Cryopreserved neurons of a mollusc are capable of morphological differentiation in culture in vitro].

It was shown in culture in vitro that neurons isolated from the cryopreserved brain of adult molluscs Lymnaea stagnalis L. retain viability. Isolated brains were frozen in liquid nitrogen vapors at a rate of 400-500 degrees C/min in the presence of 2 M dimethylsulfoxide.

[Proliferation and morphological differentiation of neurblastoma cells in cultured under the effect of avermectins].

The effect of natural avermectin complex (Aversectin C) and Abamectin on the processes of proliferation and morphological differentiation of the neural cells was studied using N1E-115 murine neuroblastoma cells (clone C-1300) as a model. Aversectin C in concentrations 10(-7)-10(-8) was shown to induce morphological differentiation of cultured nervous cells. Treatment with Abamectin resulted in the changes of proliferation pattern of the cells.

[Detection of two polymorphic sites in the human c-fms gene: allele frequency and genotype in some populations of Russia].

Two polymorphic sites were found in the human c-fms gene: one (G-->A) was in position 34,047 in the last intron, and the other (dinucleotide TC-->CA) was in positions 34,293 and 34,294 in the 3'-untranslated gene region, 34 bp downstream of the translation stop codon. The polymorphic dinucleotide appeared to be immediately upstream of an octamer showing 100% homology to cis element -CAAACTTC-, which is responsible for controlled instability of mRNAs of several genes. Based on these data, functional significance was assumed for this polymorphism of the c-fms gene.