Structure Analysis and Its Correlation with Mechanical Properties of Microcellular Polyamide Composites Reinforced with Glass Fibers.

Thin-walled and thick-walled microcellular moldings were obtained by MuCell technology with nitrogen as a supercritical fluid. 2 mm thick polyamide 6 (PA6) with 30% wt. glass fiber (GF) samples were cut from automotive industrial elements, while 4 mm, 6 mm, and 8.

Processing and Mechanical Properties of Highly Filled PP/GTR Compounds.

Ground rubber from automobile tires is very difficult to recycle due to the cross-linking of the macromolecules and thus the lack of thermoplastic properties. The research consisted of assessing the processing possibility via the injection of highly filled PP/GTR compounds modified with 1.5 wt.

The Impact of Selected Laser-Marking Parameters and Surface Conditions on White Polypropylene Moldings.

Laser marking of polymer materials is a technology that is increasingly used in industry. Polypropylene (PP) shows a low ability to absorb electromagnetic radiation in the near-infrared range (λ = 1064 nm). The paper presents the influence of the surface condition of white-colored polypropylene moldings on the efficiency of their marking with a laser beam.

Analysis of the Innovative Channel Strut Concept Manufactured by Roll-Forming.

Due to the wide use of channel strut components, manufacturing is implemented in many industrial plants. Standard technology of profiles is based on welding of two parts of the profile and requires the regalvanizing of the joint zone causes. Thus, the production is challenging to automate on a single line.

Influence of Extruder's Nozzle Diameter on the Improvement of Functional Properties of 3D-Printed PLA Products.

The dynamic growth of the use of polymer construction parts manufactured individually and in a small series makes it necessary to improve additive methods in the areas of materials, equipment and processes. By observing selected phenomena occurring during the processing of polymer materials in other production technologies (e.g.

Modification of Laser Marking Ability and Properties of Polypropylene Using Silica Waste as a Filler.

Polypropylene (PP) belongs to the group of polymers characterized by low susceptibility to absorption of electromagnetic radiation in the infrared range ( = 1064 nm). This research consisted of assessing the possibility of using silica waste from the metallurgic industry as an additive for PP laser marking. The modifier was introduced into the polymer matrix in the range from 1 to 10 wt%.

High-Performance of a Thick-Walled Polyamide Composite Produced by Microcellular Injection Molding.

Lightweight moldings obtained by microcellular injection molding (MIM) are of great significance for saving materials and reducing energy consumption. For thick-walled parts, the standard injection molding process brings some defects, including a sink mark, warpage, and high shrinkage. Polyamide 66 (PA66)/glass fiber (GF) thick-walled moldings were prepared by MuCell technology.

The Microcellular Structure of Injection Molded Thick-Walled Parts as Observed by In-Line Monitoring.

The aim of the study was to detect the influence of nitrogen pressure on the rheological properties and structure of PA66 GF30 thick-walled parts, produced by means of microcellular injection molding (MIM), using the MuCell technology. The process was monitored in-line with pressure and temperature sensors assembled in the original injection mold. The measured data was subsequently used to evaluate rheological properties inside an 8.

The Impact of Laser Radiation on Polypropylene Molded Pieces Depending on Their Surface Conditions.

The article presents an analysis of the impact of a laser beam interaction (Nd: YVO) with selected operational parameters on the quality of graphical marks obtained on the surfaces of polypropylene-molded pieces with different surface textures (variable parameters of the surface layer). Polypropylene test specimens were produced by injection using the original injection mold, which allowed for the obtainment of products with variable surface finish parameters determined by the surface condition of the forming cavity. The presented relationship between the parameters of laser performance, the texture of a molded piece surface, the molded piece's color, and types of masterbatches supporting the marking process allows for the assessment of the efficiency of graphic symbol application by laser marking.

Assessment of Abdominal Belts Impact on the Lungs Ventilation and Their Application in Early Physiotherapy after Major Abdominal Surgery - Prospective Trial.

Unlabelled: Early physiotherapy is an important part of the comprehensive treatment of patients after major abdominal surgery (MAS). Accelerated mobilization should be safe and requires the use of appropriate techniques. Most of the physiotherapists and surgeons recommends using abdominal belts.

The usefulness of anorectal manometry in patients with a stoma before and after surgery to restore the continuity of the gastrointestinal tract.

Unlabelled: The operation to restore the continuity of the gastrointestinal tract is another surgical intervention in a given patient, which directly translates into an increased risk of complications during and after surgery. That is why proper qualification is important for the operation to restore the continuity of the gastrointestinal tract in terms of performance and efficiency of the anal sphincter apparatus, among other things. The aim of the study was to evaluate the effect of restoring physiological defecation routes on the sphincter function and to observe the parameters of anorectal manometry in patients before and after surgery to restore the continuity of the gastrointestinal tract.

Use of the TIMP in Assessment of Motor Development of Infants With Down Syndrome.

Purpose: Infants with Down syndrome (DS) who are admitted to rehabilitation centers are several weeks old, and the tests that they undergo are often not specific enough to highlight the main developmental disorders in the first postnatal trimester. The aim of this study was to assess the possibility of using the Test of Infant Motor Performance (TIMP) to examine motor development of children with DS.

Methods: Using the TIMP, 141 infants, including 64 infants with DS, with a mean age of 9.

New minimally invasive technique of parastomal hernia repair - methods and review.

Introduction: Parastomal hernia is described as the most common complication in patients with ostomy. It is reported that its incidence varies from 3% to 39% for colostomies and 0 to 6% for ileostomies. Surgical repair remains the treatment of choice.

Physiotherapy based on PNF concept for elderly people after conventional colon surgery.

Unlabelled: Aging population, increases the number of major abdominal surgery (MAS) performed in the elderly. Main goal of physiotherapy after that surgery is prevention postoperative complications and reduction of functional limitation. The aim of the study was to asses functional status elderly people after MAS during early postoperative physiotherapy.