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The paper describes the two−century−long history of the forest scientific journal ‘Sylwan’, with the division into 3 main periods, 6 sub−periods and 11 stages of the journal development. It characterizes successive owners and publishers operating since 1883 as the Polish Forest Society (primarily Galician). Despite the fact that the Polish state remained under Russian, Austro−Hungarian and Prussian...
Over the two centuries of its publishing activity, ‘Sylwan’ has published 13.5 thousand bibliographic items on over 110,000 pages from all fields of forestry and related sciences, as well as practical forestry. Of that amount, about 1,500 papers concerned nature conservation in forests. Initially, in the 19th century, descriptions and inventory results of forest resources, valuable natural areas,...
Currently in Poland there are 36,570 natural monuments (registry items). 94% of them are trees, growing as individual specimens (28,304 natural monuments), in groups (5,551) and in alleys (525). In total, this gives a number of at least 123,784 monumental trees. All of them now have the same status of a ‘natural monument’. Meanwhile, among this huge number of trees there are both average specimens...
Dental surgeons, maxillofacial surgeons and implantologists are increasingly interested in the effects of vitamin D on bone metabolism and the immune system. The correct concentration of this prohormone potentially correlates with success at each stage of osteointegration of endosseous implants. A review of literature related to the topic of the paper. A suitable level of vitamin D3 is crucial from...
Background:Nicotine absorbed by the skin and also by the digestive, respiratory and excretory systems is one of the most known toxins found in tobacco. This work reviews available literature on the influence of nicotine on human health, and in particular on the oral cavity. Material/Methods: A review of literature related to the topic of the paper. Results:Numerous studies indicate that nicotine...
The wing is the main aircraft construction element, whose main task is to produce the lift, balancing the aircraft weight as well as ensuring the execution of all flight states for which the aircraft was designed. The selection of appropriate airfoils or the development of new ones is one of the most important constructions goals. As a rule, constructors aim at ensuring a sufficiently large lift with...
Black alder Alnus glutinosa (L.) Gaertn. is an important forest−forming species in Poland, with more than 5% participation in the species structure. It is a typical lowland species, especially in the river valleys, on the banks of the lakes and in the land depressions. It is one of the main species in the following habitats: boggy mixed broadleaved forest, alder and alder−ash forest, riparian forest...
The paper presents the main results of the comprehensive inventory of monumental trees in the Strict Reserve of the Białowieża National Park, which was conducted in years 2002−2017 on an area of ca. 4700 ha and included all live trees with diameter at breast height (dbh) exceeding a minimum threshold value ranging from 60 cm for hornbeam to 120 cm for oak. For every tree fulfilling this condition,...
White Agaricus bisporus is both the most popular and the most commonly eaten edible mushroom species in the world. It is popular not only because of its taste, but also due to its high level of nutrients: dietary fiber (chitin), essential, semi-essential amino acids, unsaturated fatty acids including linoleic and linolenic acids, easily digestible proteins, sterols, phenolic and indole compounds,...
Przeanalizowano listy krytyczne grzybów (z wyłączeniem list porostów i grzybów naporostowych) pod kątem ich występowania w lasach i na terenach związanych z ekosystemami leśnymi (m.in. wrzosowiska, polany, łąki, poletka łowieckie, zadrzewienia) w Polsce. Wykazano, że na terenach leśnych, w szerokim rozumieniu tego terminu, występuje 8889 gatunków, co stanowi ponad 93% wszystkich gatunków grzybów w...
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