Failure and Degradation Mechanisms of Steel Pipelines: Analysis and Development of Effective Preventive Strategies.

The increasing challenges related to the reliability and durability of steel pipeline infrastructure necessitate a detailed understanding of degradation and failure mechanisms. This study focuses on selective corrosion and erosion as critical factors, analyzing their impact on pipeline integrity using advanced methods, including macroscopic analysis, corrosion testing, microscopic examination, tensile strength testing, and finite element method (FEM) modeling. Selective corrosion in the heat-affected zones (HAZs) of longitudinal welds was identified as the dominant degradation mechanism, with pit depths reaching up to 6 mm, leading to tensile strength reductions of 30%.

Quality of Machined Surface and Cutting Force When Milling NiTi Alloys.

The machining of shape memory alloys, such as NiTi, presents challenges due to their specific physical, chemical, and mechanical properties. This study investigated the effect of the helix angle of milling tools-both uncoated and coated-on the cutting forces and the surface roughness of the milling process for a NiTi alloy. Experiments were conducted using the tools with and without coatings at various helix angles (20°, 30°, and 40°) and under different machining conditions.

Health risks from heavy metals in cosmetic products available in the online consumer market.

The skin is a very sensitive organ that covers and protects the entire body. It is one of the routes by which chemicals present in e.g.

Australian Palliative Care Outcome Collaboration (PCOC) phases: cross cultural adaptation and psychometric validation for Polish palliative settings.

Background: Measuring palliative care quality requires the application of evaluation methods to compare clinically meaningful groups of patients across different settings. Such protocols are currently lacking in Poland. The Australian Palliative Care Outcome Collaboration (PCOC) concept of Palliative phases precisely defines patients, enables episodes of care extraction for benchmarking and further assessment of service delivery.

Endoscopic Approaches for Managing Small Intestinal Disease.

The endoscopic evaluation and management of small intestinal diseases continue to evolve and expand. The advent of small bowel wireless capsule endoscopy and deep enteroscopy with either a double- or single-balloon enteroscope now allows complete endoscopic visualization of the entire small intestine and enables access for endoscopic interventions such as biopsies or hemostasis for most of the small bowel. New endoscopic techniques are available to treat proximal malignant small bowel obstruction, including intraluminal stents and endoscopic gastrojejunal stents.