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EN
Objectives Prior studies have been performed on cotton textile plants throughout the world. This study was planned to identify the rate of byssinosis and chronic obstructive pulmonary disease (COPD) in hemp and jute workers and those who worked with both of them. Material and Methods The study was realized in a factory which consecutively processed hemp and jute. The study enrollment included 266 people, 164 of whom were active workers and 102 were retired. A questionnaire, plain chest X-rays, physical examination and pulmonary function tests were performed. Dust levels were measured in various sections of the factory during 8 h work shifts. Endotoxin levels of various quality hemp fibers and dusts were measured. Results The rate of byssinosis (28.2%) was higher among the workers that who exposed to both jute and hemp dust. The frequency of chronic bronchitis in retired workers who previously smoked was higher (20%) as compared to currently smoking workers (17%). High dust levels were measured in some parts of the factory (mean (M) = 2.69 mg/m³). Working in dense dust areas, active smoking, being older than 40 years of age, being an ex-smoker, and working in the factory for a period exceeding 15 years were significantly associated with bronchitis and emphysema development. High endotoxin levels were determined for fine hemp dust (605 EU/mg), coarse hemp dust (336 EU/mg) and poor quality hemp fibers (114 EU/mg), whereas in fresh hemp stalks the level of endotoxin was determined to be lower (0.27 EU/mg). Conclusions Because of high exposures to jute and hemp dusts that are associated with high byssinosis rates, personal protection and environmental hygiene is crucial to prevention of byssinosis.
EN
In 2002, the director of the Institute of Natural Fibers in Poznań commissioned the development of a new variety of hemp, better yielding than currently cultivated, for the needs of the pulp, paper and energy industries. The existing varieties are mainly used to obtain fiber used for the needs of the textile industry or for non-textile purposes (automotive, construction, composite industry, etc.).
PL
W 2002 roku dyrektor Instytutu Włókien Naturalnych w Poznaniu zlecił wyhodowanie nowej odmiany konopi włóknistych, lepiej plonującej od aktualnie uprawianych, dla potrzeb przemysłu celulozowo-papierniczego i energetycznego. Istniejące odmiany służą głównie dla pozyskiwania włókna wykorzystywanego na potrzeby przemysłu włókienniczego lub na cele pozawłókiennicze (przemysł motoryzacyjny, budowlany, kompozytowy itp.).
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ARCHITEKTURA I RENESANS KONOPI

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PL
Celem artykułu jest przedstawienie słabo rozpoznanej w Polsce technologii budowlanej wykorzystującej do wznoszenia przegród mieszankę konopno-wapienną – hempcrete. W artykule scharakteryzowano materiał na podstawie przeglądu światowych publikacji oraz obserwacji i analizy praktycznych zastosowań materiału. Zebrane dane wskazują na możliwości stosowania tej technologii w Polsce i określają warunki, które muszą zostać spełnione, aby stało się to efektywne. Popularyzacja zagadnienia ma na celu zachęcenie do inicjowania badań w tym obszarze przez specjalistów różnych branż. Potrzebne jest także usystematyzowanie wiedzy o tym popularnym i obecnie nośnym społecznie zagadnieniu technicznym, które z uwagi na braki w polskojęzycznej literaturze naukowej jest często w źródłach popularnonaukowych przedstawiane w sposób niepełny lub błędny.
EN
An aim of the article is to present a little known in Poland building technology which uses hemplime mixes (hempcrete) to construct building partitions. The material was characterised basing on world-wide scientific publications and also on observations and analyses of practical applications of the material. The gathered data indicate the capabilities of using the technology in Poland as well as conditions to be fulfilled to make it effective. Popularisation of the issue aims at encouraging specialists of different branches to initiate scientific research. There is also the need to systemise the knowledge of this popular technical issue, which due to lack of literature in Polish is often presented incompletely or incorrectly in popular science sources.
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