80 research outputs found
Research of Certain Pathogenic Characteristics of Clinical Isolates of Staphylococci of Skin Biome
A serious problem in patients with atopic dermatitis (AD) is the frequent attachment of a secondary skin infection. Among the microbes colonizing the skin of patients suffering from AD, S. aureus takes the lead. According to different authors, from the skin of 80β95 % of patients are sown Staphylococcus aureus. The survival of bacteria in a biotope is promoted by the persistent properties of microorganisms.Aim of the research: to determine the adhesive properties and antilysozyme activity of clinical strains of staphylococci isolated from the skin of patients with allergic dermatosis.The study included 50 patients with atopic dermatitis and 20 practically healthy individuals, from which 140 laboratory strains of staphylococci were isolated: 101 strains from patients with AD and 39 control strains. Bacteriological studies to isolate microorganisms and determine a number of pathogenic characteristics were carried out using the methods of classical bacteriology.The severity of antilysozyme activity (ALA) and adhesive properties of strains isolated from affected areas of the skin was significantly higher than in cultures isolated from intact skin areas, both qualitatively and quantitatively. The obtained data made it possible to assume a certain complicating role of these factors on the course of AD
Discovery of metastable tetragonal disordered phase upon phase transitions in the equiatomic nanostructured FePd alloy
Specific features of the phase transformation 1 β L10 (space groups Fm3m and P4/mmm, respectively) in single crystals of the equiatomic alloy FePd subjected to annealings both in the absence and in the presence of external uniaxial load, as well as in polycrystalline samples that had undergone severe plastic deformation via high-pressure torsion and subsequent annealing, have been studied. An investigation of the single crystals in a nanostructured state formed at different stages of ordering annealing was performed using optical polarization, thermomagnetic and transmission electron microscopy (TEM) methods. The nanostructured state of the polycrystalline samples FePd after deformation of both disordered and ordered FePd alloys and subsequent annealing was examined with the help of TEM and X-ray techniques. The results obtained were analyzed based on the known concepts of the symmetry theory of phase transitions. It was concluded that the atomic ordering in the FePd alloys is preceded by the formation of a ferroelastic disordered body-centered tetragonal phase with the structural type 6 and the space group I4/mmm. Experimental data that evidence the existence of a tetragonal disordered phase both in the single crystals and in the polycrystalline samples of FePd after severe plastic deformation and subsequent annealing are reported. Thus, the A1 β A6 β L10 phase transformation represents a combination of different types of phase transitions such as cooperative displacement A1 β 6 and ordering A6 β L10 of atoms
Clinical features of kidney involvement in microscopic microscopic polyangiitis
Aim. To evaluate clinical features and outcomes of renal involvement in patients with microscopic polyangiitis (MPA). Materials and methods: We enrolled 99 patients with MPA, diagnosed in accordance with the algorithm of the European Medicines Evaluation Agency (EMEA) and the Chapel Hill consensus conference definition (2012). Serum creatinine (sCr), estimated glomerular filtration rate (eGFR), hematuria and proteinuria were estimated. Frequency of rapidly progressive renal failure (a twofold increase in the sCr level in β€3 months) was regarded as the clinical equivalent of rapidly progressive glomerulonephritis (RPGN). Results and discussion. Renal involvement was present in 92 (92.9%) patients. RPGN developed in 51 (55,4%) patients. The most common features of kidney involvement were hematuria and subnephrotic proteinuria. Arterial hypertension was revealed in 32 (34.7%) patients and was associated with RPGN (
Relationship between serologic profile (ANCA type) and clinical features of renal involvement in ANCA-associated vasculitides
Objective. To compare the frequency, clinical features and outcomes of renal involvement in ANCA-associated vasculitides (AAV) in patients with antibodies against proteinase-3 (pr3-ANCA) and myeloperoxidase (MPO-ANCA). Materials and methods. In our retrospective study we enrolled 264 patients, 94 males and 170 females, median age 53 [36; 62] years. Among them 157 were pr3-ANCA positive and 107 were MPO-ANCA positive. AAV was diagnosed according to ACR criteria and Chapel Hill consensus conference definition (2012). Median follow up was 44 [18; 93] months. We assessed baseline BVAS and VDI by the end of the follow up. Serum creatinine (sCr), estimated glomerular filtration rate (eGFR), hematuria and daily proteinuria were estimated. Diagnosis and stage of chronic kidney disease (CKD) and acute kidney injury (AKI) were established according to KDIGO guidelines (2012) and Scientific Society of Russian Nephrologists (2016). Results. Renal involvement was present in 181 (68.6%) patients, and its frequency was similar in pr3-ANCA and MPO-ANCA subgroups. Patients with MPO-ANCA developed rapidly progressive glomerulonephritis and hypertension significantly more often than patients with pr3-ANCA: 50.7% vs 35.6% (p=0.049) and 46.1% vs 29.8% (p=0.029) respectively. At disease onset, median sCr was significantly higher and eGFR was significantly lower in patients with MPO-ANCA (
ΠΠΎΡΡΠΎΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½Π°Ρ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ° ΡΠ»ΠΈΠ·ΠΈΡΡΠΎΠΉ ΠΎΠ±ΠΎΠ»ΠΎΡΠΊΠΈ ΠΆΠ΅Π»ΡΠ΄ΠΊΠ° Ρ Π±ΠΎΠ»ΡΠ½ΡΡ Ρ Π±ΡΠΎΠ½Ρ ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΠΎΠΉ ΡΠ°Π·Π½ΠΎΠΉ ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΡΡΠΆΠ΅ΡΡΠΈ
Summary. Morphological characteristics of gastric mucosa in patients with asthma of different severity with regard to corticosteroid therapy were described in this article. The aim of this study was to substantiate optimized standards of asthma treatment. Clinical and morphological investigations were conducted at the city clinical hospital β 31. We investigated all structural components of the gastric mucosa in biopsy specimens with light binocular microscopy and performed morphometric study of inflammatory infiltrates. As a result, several signs of protective effect of inhaled corticosteroids on gastric mucosa were found. We did not obtain any results that could confirm the key role of glucocorticosteroids in occurrence of gastrointestinal erosions in asthma patients. Therefore, prevention of erosive gastritis and other inflammatory gastrointestinal diseases in asthma patients should consider other risk factors besides glucocorticosteroid therapy and cover all stages of asthma.Π Π΅Π·ΡΠΌΠ΅. Π‘ΡΠ°ΡΡΡ ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° ΠΎΡΠ΅Π½ΠΊΠ΅ ΠΈ Π°Π½Π°Π»ΠΈΠ·Ρ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΡΠ»ΠΈΠ·ΠΈΡΡΠΎΠΉ ΠΎΠ±ΠΎΠ»ΠΎΡΠΊΠΈ ΠΆΠ΅Π»ΡΠ΄ΠΊΠ° Ρ Π±ΠΎΠ»ΡΠ½ΡΡ
Ρ Π±ΡΠΎΠ½Ρ
ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΠΎΠΉ ΡΠ°Π·Π½ΠΎΠΉ ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΡΡΠΆΠ΅ΡΡΠΈ Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ Π²ΠΈΠ΄Π° ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΠΉ Π³Π»ΡΠΊΠΎΠΊΠΎΡΡΠΈΠΊΠΎΡΡΠ΅ΡΠΎΠΈΠ΄Π½ΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ Ρ ΡΠ΅Π»ΡΡ Π²ΡΡΠ²Π»Π΅Π½ΠΈΡ Π½Π°ΡΡΠ½ΡΡ
ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΉ Π΄Π»Ρ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΡΡΠ°Π½Π΄Π°ΡΡΠΎΠ² Π²Π΅Π΄Π΅Π½ΠΈΡ ΡΡΠΎΠΉ ΠΊΠ°ΡΠ΅Π³ΠΎΡΠΈΠΈ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ². ΠΠ»ΠΈΠ½ΠΈΠΊΠΎ-ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π±ΡΠ»ΠΎ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ Π½Π° Π±Π°Π·Π΅ ΠΠΎΡΠΎΠ΄ΡΠΊΠΎΠΉ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠΉ Π±ΠΎΠ»ΡΠ½ΠΈΡΡ β 31 ΠΠ΅ΠΏΠ°ΡΡΠ°ΠΌΠ΅Π½ΡΠ° Π·Π΄ΡΠ°Π²ΠΎΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΡ Π³. ΠΠΎΡΠΊΠ²Ρ. ΠΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ ΠΈ ΠΌΠΎΡΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈ ΠΈΠ·ΡΡΠ΅Π½Π° ΡΠ»ΠΈΠ·ΠΈΡΡΠ°Ρ ΠΎΠ±ΠΎΠ»ΠΎΡΠΊΠ° ΠΆΠ΅Π»ΡΠ΄ΠΊΠ°. Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ Π²ΡΡΠ²Π»Π΅Π½Ρ ΠΏΡΠΈΠ·Π½Π°ΠΊΠΈ Π³Π°ΡΡΡΠΎΠΏΡΠΎΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΡΡΡΠ΅ΠΊΡΠ° ΠΎΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΈΠ½Π³Π°Π»ΡΡΠΈΠΎΠ½Π½ΡΡ
Π³Π»ΡΠΊΠΎΠΊΠΎΡΡΠΈΠΊΠΎΡΡΠ΅ΡΠΎΠΈΠ΄ΠΎΠ². ΠΠ½Π΅Π½ΠΈΠ΅ ΠΎ ΠΊΠ»ΡΡΠ΅Π²ΠΎΠΉ ΡΠΎΠ»ΠΈ Π³Π»ΡΠΊΠΎΠΊΠΎΡΡΠΈΠΊΠΎΡΡΠ΅ΡΠΎΠΈΠ΄ΠΎΠ² Π² ΡΠ°Π·Π²ΠΈΡΠΈΠΈ ΡΡΠΎΠ·ΠΈΠ²Π½ΡΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΠΆΠ΅Π»ΡΠ΄ΠΎΡΠ½ΠΎ-ΠΊΠΈΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΡΠ°ΠΊΡΠ° ΠΏΡΠΈ Π±ΡΠΎΠ½Ρ
ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΠ΅ Π½Π΅ Π±ΡΠ»ΠΎ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΎ. ΠΡΠΎΡΠΈΠ»Π°ΠΊΡΠΈΠΊΠ° ΡΡΠΎΠ·ΠΈΠ²Π½ΠΎΠ³ΠΎ Π³Π°ΡΡΡΠΈΡΠ° ΠΈ Π΄ΡΡΠ³ΠΈΡ
Π²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΡΡ
Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ ΠΆΠ΅Π»ΡΠ΄ΠΊΠ° ΠΏΡΠΈ Π±ΡΠΎΠ½Ρ
ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΠ΅ Π΄ΠΎΠ»ΠΆΠ½Π° Π°ΡΡΠΎΡΠΈΠΈΡΠΎΠ²Π°ΡΡΡΡ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ Ρ ΠΏΡΠΈΠ΅ΠΌΠΎΠΌ Π³Π»ΡΠΊΠΎΠΊΠΎΡΡΠΈΠΊΠΎΡΡΠ΅ΡΠΎΠΈΠ΄ΠΎΠ², Π΅Π΅ ΡΠ»Π΅Π΄ΡΠ΅Ρ ΡΡΠΈΡΡΠ²Π°ΡΡ Π½Π° Π²ΡΠ΅Ρ
ΡΡΠ°Π΄ΠΈΡΡ
Π±ΡΠΎΠ½Ρ
ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΡ
The features of the structure and magnetic properties of Co-SiO2, Co-Al2O3 composite films with Tunneling Magnetoresistance effect
In the present work, we have studied the structural, magnetic and magnetoresistive properties of Cox(SiO2)100-x and Cox(Al2O3)100-xcomposite thin films, obtained by magnetron cosputtering of metallic and insulator targets. It was shown by transmission electron microscopy and by temperature and field dependences of the magnetization that the films have a fine granular structure. For a wide range of compositions an adequate description was possible in frame of the model of homogeneous non-interacting superparamagnetic hexagonal lattice Co particles. Magnetoresistive sensor prototypes were designed on the base of an optimized magnetoresistive Co50(Al2O3) 50composite films. Β© (2012) Trans Tech Publications
EXPRESS METHOD OF BARCODE GENERATION FROM FACIAL IMAGES
In the paper a method of generating of standard type linear barcodes from facial images is proposed. The method is based on use of the histogram of facial image brightness, averaging the histogram on a limited number of intervals, quantization of results in a range of decimal numbers from 0 to 9 and table conversion into the final barcode.
The proposed solution is computationally low-cost and not requires the use of specialized software on image processing that allows generating of facial barcodes in mobile systems, and thus the proposed method can be interpreted as an express method. Results of tests on the Face94 and CUHK Face Sketch FERET Databases showed that the proposed method is a new solution for use in the real-world practice and ensures the stability of generated barcodes in changes of scale, pose and mirroring of a facial image, and also changes of a facial expression and shadows on faces from local lighting. The proposed method is based on generating of a standard barcode directly from the facial image, and thus contains the subjective information about a person's face
PEOPLE RETRIEVAL BY MEANS OF COMPOSITE PICTURES: PROBLEM STATE-OF-THE-ART AND TECHNOLOGIES
We discuss the problem of people retrieval by means of composite pictures constructed according to descriptive
portrait. An overview of the problem state-of-the-art is provided beginning from the basic concepts and terminology to a
modern technology for composite picture creation, real-world scenarios and search results. The development history of
systems for forming composite portraits (photo robots and sketches) and the ideas implemented in these systems are
provided. The problem of automatic comparison of composite pictures with the original ones is discussed, and the reasons for
unattainability of stable retrieval of originals by a composite picture in real-world scenarios are revealed.
Requirements to composite pictures databases in addition to the existing benchmark databases of facial images and also
methods for implementation of such databases are formulated. Approaches for generation of sketches population from an
initial one that increase effectiveness of identikit-based photo image retrieval systems are proposed. The method of similarity
index increasing in the couple identikit-photograph based on computation of an average identikit from the created population
is provided. It is shown that such composite pictures are more similar to original portraits and their use in the discussed
search problem can lead to good results. Thus the created identikits meet the requirements of the truthful scenario as take into
account the possibility of incomplete information in descriptions. Results of experiments on CUHK Face Sketch and CUHK
Face Sketch FERET databases and also open access identikits and corresponding photos are discussed
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