New Localities of Vascular Plants Occurring in Poland, 3

W pracy przedstawiono nowe stanowiska 18 rzadkich (lub regionalnie rzadkich) roślin naczyniowych w Polsce (rodzimych i obcych), tj. Allium victorialis, Asclepias syriaca, Carex brizoides, Cephalanthera rubra, Cypripedium calceolus, Eragrostis albensis, Erysimum pieninicum, Gentiana cruciata, Lepidium coronopus, L. latifolium, Limosella aquatica, Lycopodiella inundata, Orobanche centaurina, O. lutea, Silaum silaus, Taraxacum paucilobum, Tragus racemosus oraz Trapa natans.This work presents a list of new localities in Poland for the following 18 rare (including regional rare) vascular plants (native and alien species): Allium victorialis, Asclepias syriaca, Carex brizoides, Cephalanthera rubra, Cypripedium calceolus, Eragrostis albensis, Erysimum pieninicum, Gentiana cruciata, Lepidium coronopus, L. latifolium, Limosella aquatica, Lycopodiella inundata, Orobanche centaurina, O. lutea, Silaum silaus, Taraxacum paucilobum, Tragus racemosus, and Trapa natans.The research was self-financed by the authors

Studies on the usable properties of innovative wound dressings

The new implemented wound dressings should meet several requirements connected with the clinical safety and performance. The series of PN-EN 13726 Standards describes the tests methods for the verification the most important parameters related to mentioned performance and safety of a new designed wound dressing being the base for the risk analysis (according to PN-EN ISO 14971:2009 Standard). The aim of the research was to evaluate the behavior of several types of new designed prototypes of innovative wound dressings made of various form of chitosan (such as: foams, films, etc.). The behavior of studied chitosan wound dressings was evaluated before and after of accelerated aging according to ASTM F 1980-07:2002 to establish the effect of the wound dressings storing conditions. The presented study is a continuation of earlier research

Preliminary studies on the usable properties of innovative wound dressings

There is endless and growing demand on a novel and innovative wound dressings, which except basic protective performance accelerate the process of wounds healing and/or replace the patient skin function. The studies on the new wound dressings result from the need of the quick and effective treatment of wounds, such as: having no tendency to heal, posttraumatic wounds, scalding wounds, ulcerations or bedsores. Chitosan is a biopolymer originated from chitin by N-acetylation. Due to the special behavior, such as: biological activity, it is linked to polymers having several and multifunctional applications, especially for designing of medical devices. The aim of the research was to evaluate the comprehensive performance of several kinds of chitosan prototypes of innovative wound dressings made of various usable form of chitosan. The evaluation of mentioned prototypes of wound dressing was carried out using the guidelines from series of PN-EN 13726 Standards harmonized with UE Directive 93/42/EEC and 2007/47/WE for medical devices

Modification of Cellulose Products by the Use of Chitosan and Chitosan-Alginate Nano-Particles

Aim of the presented research was the improvement of fibrous cellulosic products for uses in hygiene and medical sectors. Nano-particles of bioactive polysaccharides were imparted to cellulosic fibrous products to modify their properties: physical–chemical like absorption, biological like antibacterial and antifungal activity, and mechanical. Fibrous materials like dressing gauze, wood-wool, and hygiene tissues were modified by the addition of chitosan and chitosan-alginate nano-particles. Padding and freeze-drying was applied in the coating of the fibrous materials with the nano-sized polymers

Advanced cellulosic materials

Aim of the work was to prepare a method of producing chitosan and chitosan-alginate nanoparticles designed for the modification of textile cellulosic products in hygiene and medical application. Spectrophotometry was used in the estimation of the prepared nanoparticles; analyzed, too, was the particle size and antibacterial and antifungal activity

ADVANCED CELLULOSIC MATERIALS

Abstract Aim of the work was to prepare a method of producing chitosan and chitosan-alginate nanoparticles designed for the modification of textile cellulosic products in hygiene and medical application. Spectrophotometry was used in the estimation of the prepared nanoparticles; analyzed, too, was the particle size and antibacterial and antifungal activity

Design of New-Generation Usable Forms of Topical Haemostatic Agents Containing Chitosan

Designing usable forms of topical haemostatic agents is the most important activity during the design process, resulting in strengthened functional properties of the final medical devices. This study aimed to propose indications for a research programme based on risk management supporting the development of two usable forms of a topical haemostatic agent: chitosan/alginate lyophilized foam and chitosan/alginate impregnated gauze. Both of the usable forms of the topical haemostatic agent, being the main part of the modified combat gauze, were fabricated using the chitosan/alginate complex. Risk analysis is helpful in developing an appropriate research programme, significantly reducing the risk to an acceptable level

Haemostatic, resorbable dressing of natural polymers - hemoguard

Investigations are presented in the preparation of a first aid haemostatic dressing that would exhibit an adequate haemostatic capacity in injuries and surgical wounds, an antibacterial activity to prevent primary and secondary infections, and offer safety in us