Impact of Glow-Discharge Nitriding Technology on the Properties of 3D-Printed Grade 2 Titanium Alloy.

This study presents a comparative analysis of the corrosion resistance of nitrided layers on conventional Grade 2 titanium alloy and those produced by direct metal laser sintering (DMLS). Low-temperature glow-discharge nitriding of the tested materials was carried out using conventional glow-discharge nitriding (so-called nitriding at the cathode potential-TiN/CP) and with the use of an "active screen" (nitriding at the plasma potential-TiN/PP). The TiN + TiN + Ti(N) layers were characterized by their microstructure, nanohardness profile distribution, surface topography, and corrosion resistance.

The Effect of Nitriding Temperature of AISI 316L Steel on Sub-Zero Corrosion Resistance in CHOH.

In this paper, glow nitriding processes at cathode potential are used at various temperatures to investigate how they affect the corrosion resistance of 316L steel in ethanol at temperatures of 22 °C and -30 °C. Lowering the test temperature reduces the corrosion rate of the nitrided layers. Conversely, glow nitriding at 450 °C improves the corrosion resistance of the tested steel.

Safety and Immunogenicity of V114 in Preterm Infants: A Pooled Analysis of Four Phase Three Studies.

Background: Risk of invasive pneumococcal disease is 3-fold higher in preterm versus full-term infants. V114 is a 15-valent pneumococcal conjugate vaccine (PCV) containing the 13 serotypes in PCV13 plus 2 unique serotypes, 22F and 33F. A pooled subgroup analysis was performed in preterm infants (<37 weeks gestational age) enrolled in 4 pediatric phase 3 studies evaluating the safety and immunogenicity of different 4-dose regimens of V114 or PCV13.

Influence of Ion Nitriding on Microstructure and Properties of Haynes 282 Nickel Superalloy Specimens Produced Using DMLS Technique.

The paper investigates the influence of the ion-nitriding process on the microstructure, corrosion resistance, and tensile strength at elevated temperatures of Haynes 282 nickel superalloy specimens produced by the Direct Metal Laser Sintering (DMLS) technique. The study was performed for two conditions, i.e.

A Phase III, multicenter, randomized, double-blind, active comparator-controlled study to evaluate the safety, tolerability, and immunogenicity of V114 compared with PCV13 in healthy infants (PNEU-PED-EU-1).

Background: V114 (15-valent pneumococcal conjugate vaccine [PCV]) contains all serotypes in 13-valent PCV (PCV13) and additional serotypes 22F and 33F. This study evaluated safety and immunogenicity of V114 compared with PCV13 in healthy infants, and concomitant administration with DTPa-HBV-IPV/Hib and rotavirus RV1 vaccines.

Methods: V114 and PCV13 were administered in a 2+1 schedule at 2, 4, and 11-15 months of age.

Safety, tolerability, and immunogenicity of V114 pneumococcal vaccine compared with PCV13 in a 2+1 regimen in healthy infants: A phase III study (PNEU-PED-EU-2).

Background: This phase III study evaluated safety, tolerability, and immunogenicity of V114 (15-valent pneumococcal conjugate vaccine) in healthy infants. V114 contains all 13 serotypes in PCV13 and additional serotypes 22F and 33F.

Methods: Healthy infants were randomized to two primary doses and one toddler dose (2+1 regimen) of V114 or PCV13 at 3, 5, and 12 months of age; diphtheria, tetanus, pertussis (DTaP), inactivated poliovirus (IPV), Haemophilus influenzae type b (Hib), hepatitis B (HepB) vaccine was administered concomitantly.

Improving the Properties of Composite Titanium Nitride Layers on the AZ91D Magnesium Alloy Using Hydrothermal Treatment.

Coating magnesium alloys with nitride surface layers is a prospective way of improving their intrinsically poor surface properties; in particular, their tribological and corrosion resistance. These layers are usually produced using PVD methods using magnetron sputtering or arc evaporation. Even though the thus-produced layers significantly increase the wear resistance of the alloys, their effects on corrosion resistance are unsatisfactory because of the poor tightness, characteristic of PVD-produced products.

Hybrid a-CNH+TiO+TiN-type surface layers produced on NiTi shape memory alloy for cardiovascular applications.

Aim: The goal was to improve the properties of NiTi shape memory alloy to make it suitable for cardiac applications. For this purpose, a hybrid a-CNH+TiO+TiN-type surface layer was produced on NiTi alloy and characterized.

Materials & Methods: The NiTi alloy subjected to hybrid process combining low-temperature oxynitriding under glow discharge conditions and radio frequency chemical vapor deposition process was examined for microstructure, surface topography, corrosion resistance, wettability and surface-free energy, Ni ion release and platelets adhesion, aggregation and activation.

Hydrostatic Extrusion and Nano-Hardness of Nanocrystalline Grade 2 Titanium.

The structure and corrosion resistance of Grade 2 titanium subjected to the hydroextrusion processes were examined. The microstructure was characterized using optical microscopy and transmission electron microscopy. The corrosion resistance was determined using the impedance and potentiodynamic methods, in 0.

[Diagnostic difficulties in diffuse pulmonary infiltrations].

We described a case of 26-year-old woman, with the history of cough and exercise dyspnoea. Chest X-ray and HRCT examination showed diffuse interstitial infiltration. Histopathological examination of supraclavicular lymph nodes and lung tissue obtained by transbronchial biopsy revealed metastatic adenocarcinoma.

[Patient with haemoptysis, dyspnoea, fever and lung infiltration].

In this study we presented the case of 55 years old man who was admitted to the Dept. of Lung Diseases and Tuberculosis in Zabrze with haemoptysis, dyspnoea, fever and lung infiltration. Initially the neoplastic disease was diagnosed.

[Invasive pulmonary aspergillosis as a complication of prolonged antibiotic therapy].

In this study we present the case of 53 year old woman hospitalized in the Department of Lung Diseases and Tuberculosis in Zabrze, Silesian Medical University in Katowice, due to chronic cough and infiltration in the chest radiogram. Prior to the admission, the patient received long-lasting antibiotic ambulatory treatment leveled at laryngobronchitis. After admission the patient underwent bronchofiberoscopy during which a sample for mycological examination of bronchoalveolar lavage was taken.

[Broncho-alveolar lavage cells are the most significant reservoir of human cytomegalovirus genome].

The aim of the study is to estimate human cytomegalovirus DNA copy number in different compartments (BAL cells, blood leukocytes, serum) in patients with idiopathic pulmonary fibrosis (IPF). There were 16 patients (mean age 40.87 +/-10.

[Mucoepidermoid carcinoma of the lung--case reports].

Two patients, a young woman and a young man, with mucoepidermoid carcinoma of the lung, who were diagnosed at the Department of Phthisiopneumonology in Zabrze Silesian Medical University in Katowice are described. The principal method of diagnostics in the presented cases were bronchofiberoscopy followed by the histopathological examination of the lesions. There are no cases of massive bleeding as the side effect of this procedures described.

[Survey of bronchoscopy in the Pulmonology Centers of the Upper Silesian region in 2002. Part II. Performance].

The aim of the study is to present the up-to-date data concerning bronchoscopy in the Silesian region in the year 2002. The study was performed as a survey. The survey was mailed to all the 18 pulmonological centres in the silesian region.

[Survey of bronchoscopy in the Pulmonology Centers of the Upper Silesian region in 2002. Part I. Doctor and patient].

The aim of the study is to present the up-to-date data concerning bronchoscopy in the Silesian region in the year 2002. The study was performed as a survey. The survey was mailed to all the 18 pulmonological centres in the silesian region.

[Chronic obstructive pulmonary disease in inhabitants of Zabrze].

In 2001 a modified MRC questionnaire and spirometry were performed in the inhabitants of Zabrze (Poland). Two hundred and thirty-nine men and 320 women aged 19-69 years were studied. Forty percent of men and 23% of women were smokers.