Mineral Mimetic Material Sr-Exchanged Sitinakite of Different Crystallinity: Phase Transformations during Heat Treatment and the Strength of SR Fixation in a Ceramic Matrix.

A simple method for the direct transformation of Sr-exchanged titanosilicate with the sitinakite structure (IONSIV) into ceramic material through cold pressing and subsequent sintering at 1100 °C for 4 h is presented. The temperature transformation of Sr-exchanged sitinakite showed the stages of recrystallization of the material with the formation of Sr-Ti phases matsubaraite (SrTi[SiO]O), jeppeite (SrTiO), tausonite (SrTiO), and rutile. Leaching experiments showed the efficiency of fixation of Sr cations in a ceramic matrix; extraction into water does not exceed 0.

Growth, crystal structure and IR luminescence of KSrYEr(BO).

A series of novel KSrYEr(BO) (x = 0-1) phosphors that emit near-infrared radiation was synthesized using solid-state methods. Pure Y and Er crystals were grown using a KF flux via the top-seeded solution growth technique. In situ high-temperature single crystal X-ray diffraction, Raman spectroscopy and DFT calculations were used for characterization.

The AM-4 Family of Layered Titanosilicates: Single-Crystal-to-Single-Crystal Transformation, Synthesis and Ionic Conductivity.

Flexible crystal() structures, which exhibit() single-crystal()-to-single-crystal() (SCSC) transformations(), are attracting attention() in many applied aspects: magnetic() switches, catalysis, ferroelectrics and sorption. Acid treatment() for titanosilicate material() AM-4 and natural() compounds with the same structures led to SCSC transformation() by loss() Na, Li and Zn cations with large structural() changes (20% of the unit()-cell() volume()). The conservation() of crystallinity through complex() transformation() is possible due() to the formation() of a strong hydrogen bonding() system().

The Chemistry, Recrystallization and Thermal Expansion of Brannerite from Akchatau, Kazakhstan.

Numerous studies expose the potential of brannerite to become a good matrix, concentrating fission products and actinides. Minerals can complement the data collected from the synthetic materials and offer an advantage of a long-time exposure to radiation. Natural metamict brannerite from Akchatau, Kazakhstan, and its annealed sample were studied by EPMA, Raman spectroscopy, TGA, DSC, XRD and HTXRD.

The Burnout Concept as a Theoretical Framework for Investigating the Caregiving Impact of Relatives of Patients withAddictive Disorders.

Background: Relatives of patients withaddictive disorders often face significant difficulties in their daily lives. Although the burnout concept is currently considered a significant and promising theoretical framework for studying family members who care for chronically ill patients, its application has encountered considerable difficulties in the area of addiction treatment.

Objective: This article explores the methodology for studying the psychological issues arising in families affected by addictive disorders.

Competition between stimulated Brillouin scattering and two-photon absorption in dispersed boron nitride.

The design of transparent optical materials with stimulated Brillouin scattering (SBS) suppression is a topic of current interest. We measured two-photon absorption (2PA) cross-section σ and Brillouin gain factor g of a suspension of hexagonal boron nitride (hBN) in N-methyl-2-pyrrolidone at the second harmonic of a Nd:YAG laser. SBS exhibits a significant quenching with hBN concentration, like previously observed in graphene suspension.

Stimulated Brillouin scattering in dispersed graphene.

We explored the Stimulated Brillouin scattering (SBS) behavior of a transparent liquid containing a low concentration of strongly absorbing nanoparticles. We measured SBS energies in N-methyl-2-pyrrolidone (NMP) and water at 532 nm-wavelength. The previously unknown NMP Brillouin gain factor is g = 18.

[A role of personality and stress in the development of depressive symptoms in students].

Aim: To study a role of personality and stress as a mediator between personality and depression in university first-year students.

Material And Methods: Sixty-four students (76.6% female, mean age 18.

[The questionnaire "alcohol anosognosia" is a new tool for assessment of anosognosia in patients with alcohol dependence].

The aim of this study was to develop and validate a patient-rated questionnaire for the complex express-assessment of alcohol anosognosia. The questionnaire was tested in 106 inpatients diagnosed with alcohol dependence (ICD-10, item F10.2).

[The state and perspectives of using hydrostream technologies in surgical practice].

The work is devoted to experimental investigation and clinical application of domestic apparatus for hydrostream dissection of tissues, the schemes and principle of its working are adduced. The methods of the operations performance in experimental animals are discussed. The processes, occurring in tissues under a liquid stream action in various terms after the operation were studied.

[Hygienic assessment of biologically rigid linear alkylbenzene sulfonates].

It has been found that there are both biologically rigid and biologically soft homologues in the homologous series of linear alkylbenzene sulfonates (LABS). It is shown that absorption of LABS molecules from aqueous to activated sludge phase may serve as a determinant that should be used to refer a homologue to as rigid or soft surfactants. The biodegradability, detergency, and toxicity of LABS were ascertained to be related to the size of molecular alkyl molecular substitute.

[On lymphatic postcapillary].

V.V. Kupriyanov (1969) has described a new structural element within the initial segment of lymphatic bed which was given a name of "lymphatic postcapillary".

[Intraocular correction of aphakia in patients after kidney transplantation].

It was for the first time in the ophthalmologic practice that a possibility was demonstrated to ensure relatively high and stable functional results, in a significant number of patients with transplanted kidney (TK), related with different-type cataract extraction and with implantation of a variety of PMMA IOLs, i.e. model of B.

[The significance of removing the anterior hyaloid membrane and lens capsule in the course of combined surgery in proliferative diabetic retinopathy].

Due to the specificity of complications and to peculiarities of the surgical approach the principles of cataract surgery have been changing, when combined with transciliary vitrectomy. The postoperative complications in surgery for proliferative diabetic retinopathy (PDR) are often related with development of proliferative processes in the anterior eye segment. Therefore, a scope and a type of surgical manipulations in the anterior segment affect, to a great extent, the stability of the obtained result.

[Laser-correlation spectroscopy of the lacrimal fluid in the evaluation of the semiotic nature of postoperative inflammatory reaction and the degree of its severity in patients with diabetes mellitus after intraocular lens implantation].

Lavages of the lacrimal fluid were examined, before operation and immediately after operation, in 47 patients with diabetes mellitus and with pseudophakia in order to define the possibilities of the method of laser-correlation spectroscopy (LCS) in evaluating the semiotic nature and a severity degree of postoperative inflammation. It was found that, when the subjective symptomatology of inflammation in the LCS spectrums intensified, there was a higher contribution to the light dissemination of particles with a hydrodynamic diameter of 600 nm and more (i.e.

[Selection of components and methods for postoperative analgesia after extensive abdominal surgeries].

The modern technique of postoperative analgesia after extensive and traumatic surgical interventions presupposes the administration, apart from opiates, a variety of preparations inhibiting the biological activity of substances (prostaglandins, kinins, TNF, leukotrienes, etc.), i.e.

[Scope of lymphadenectomy in organ-sparing operations in kidney cancer patients].

Organ-saving operations (extended lymphadenectomy) were performed in 125 patients with renal carcinoma (RC) in the urological clinic of I. M. Sechenov Moscow Medical Academy between 1992 and 2002.

[An express-method for predicting fibrinous iridocyclitis in the early postoperative period in artiphakia].

The authors investigated the possibility of using the level of preoperative blood monocytosis as an express method for predicting fibrinous iridocyclitis in planned artiphakia. Extracapsular cataract extraction with intraocular correction (B. N.

[Formula for estimating the optic force of elastic intraocular lenses].

Formula for estimating the optic force of intraocular lenses made from elastic materials has been tried in 106 patients. The formula takes account of forward deflection of the elastic intraocular lens in the posterior chamber of the eye. The proposed method for estimation more than threefold decreases the mean error in estimation of optic force of elastic intraocular lenses in comparison with calculations with the use of known formulas.

[Lymphotherapy of early postoperative period in intraocular cataract correction].

Potentialities of lymphotropic method of drug administration for arresting inflammation after intraocular cataract correction were studied in 60 patients aged 48-63 years. Extracapsular cataract extraction with implantation of posterior-chamber Alexeev's intraocular lens (IOL) was carried out in all of them. Patients with complications of surgery and a history of inflammations in the operated eye were not included in the study.

[Clinico-prognostic criteria for the selection of diabetes mellitus patients for the intraocular correction of aphakia].

The level of glycosylated blood hemoglobin (HbA1c) as a clinical and prognostic criterion for selecting diabetics for implantation of intraocular lens (IOL) is assessed. Extracapsular cataract extraction with intraocular correction was carried out in 68 patients with noninsulin-dependent diabetes mellitus. Preoperative level of HbA1c in group 1 (n = 36) was no more than 8%, and in group 2 (n = 32) it was at least 8%.

[Dynamics of indicators of blood inorganic phosphorus during gastrointestinal surgery].

Inorganic phosphorus and the associated potassium, magnesium, and sodium ion levels were measured in the serum and daily urine in the perioperative period in 210 patients of both sexes aged 31-84 years subjected to planned and urgent surgery on the abdominal organs. Control group consisted of 14 patients subjected to planned operations for inguinal hernias. Intraoperative hypophosphatemia was observed in all patients at the beginning, during, and immediately after the operation.