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Tytuł:
Environmental effects of historical charcoal burning associated with water-powered ferrous metallurgy (Mała Panew basin, southern Poland)
Autorzy:
Rutkiewicz, Paweł
Malik, Ireneusz
Tematy:
human impact
landscape transformation
deforestation
charcoal hearth remains
Pokaż więcej
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:
https://bibliotekanauki.pl/articles/184525.pdf  Link otwiera się w nowym oknie
Opis:
The main aim of this study was the reconstruction of the environmental changes (identifiable at this stage of research) resulting from large-scale charcoal production for the needs of historical water-powered metallurgy in selected sites in the Mała Panew basin. The identification of the remains of charcoal hearths was carried out by analysing shaded relief models. Shaded relief models were created from data from Airborne Laser Scanning (LIDAR). In order to verify the charcoal hearth remains identified in digital images, ground proofing was carried out. The charcoal hearth remains were subjected to sampling. Fragments of charcoal were extracted from the samples, which were then sent for analysis to identify tree species. In order to determine the age of chosen charcoal hearth remains, 10 charcoal pieces were submitted for radiocarbon dating. The following taxa were identified: Scots pine (Pinus sylvestris), alder (Alnus sp.), birch (Betula sp.), oak (Quercus sp.), Norway spruce / larch (Picea abies / Larix sp.), Silver fir (cf. Abies alba) and ash (Fraxinus excelsior). The taxa identified are dominated by Scots pine (56%). This research demonstrates that valuable wood of deciduous species might have been overex-ploited at the initial stage of metallurgical production and very quickly exhausted, being replaced by fast-growing coniferous species. The excessive exploitation of the forests might have had negative environmental effects such as the transformation/modification of the species composition of the forest cover, significant deforestation of exploited areas, intensification of floods or the initiation of aeolian transport of sands. All the charcoal hearth remains investigated date to the period from 1677 to 1957 AD.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jak wyglądały późnośredniowieczne kuchnie?
What did the late medieval kitchen look like?
Autorzy:
Marciniak-Kajzer, Anna
Tematy:
średniowieczny dom
kuchnia
piec
palenisko
medieval house
kitchen
stove
hearth
Pokaż więcej
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Powiązania:
https://bibliotekanauki.pl/articles/613155.pdf  Link otwiera się w nowym oknie
Opis:
The Polish word „kuchnia” (kitchen, cooker, cuisine, cooking in English) has at least a few colloquial meanings. Most frequently it is associated with a collection of recipes. Another meaning of the word is a device for cooking, e.g. a gas or an electric cooker or until recently a coal-burning stove. It is also a room, where food is prepared. The word sounds similar in most of the European languages. It might have originated from the German etymon „küch” which means cooking. In many languages the room for food preparation and device for cooking have the same source word. Therefore it is worth considering why there are so few expressions with reference to this important sphere of our life. Historical sources containing information that would render it possible to reconstruct kitchens are scarce and relatively late. It may be suspected that for contemporary people an issue of such a self-evident nature was not worth noting. The paper treats both on written and iconographic sources. On their basis it can be assumed that kitchen as a room functioned only in large castles and monasteries, where meals were prepared for a large number of people. In other residences or even at knights’ manor houses or wealthy bourgeois houses, food was cooked in living (day) rooms, whereas initial preparation might have taken place in front of the building. The development of constructions used for cooking is another issue discussed in this paper. Iconographic sources reveal that meals were most often cooked in open hearths that were initially built on the ground level and subsequently they were placed higher. Another essential concern was smoke removal from above the hearth. Based on iconography it can be claimed that most frequently there was a hood protruding from a wall, the purpose of which was mainly protection against sparks. Not always do we know whether this hood was connected with chimney ducts. Today such a construction is called a fire place and it is used mainly for heating. It seems that placing a hearth in the so-called „wide chimney” was an essential stage in the development of a kitchen as a separate room. As a consequence the entire room „in the chimney” became a kitchen and this may give an answer to the question why there is a lack of extensive vocabulary with reference to the kitchen. Another problem mentioned in the paper are difficulties that archeologists face when they attempt to reconstruct equipment used for cooking on the basis of archeological records obtained during excavations.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D Modelling of Distribution of Temperature Field in The Rolling Mill
Autorzy:
Amirgaliyev, Y.
Wójcik, W.
Ospanova, T.
Jetpisov, K.
Tematy:
cage
hearth of deformation
rolling
temperature field
locally one-dimensional scheme
Pokaż więcej
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/123117.pdf  Link otwiera się w nowym oknie
Opis:
This article is dedicated to the study of numerical simulation of temperature field distribution in rolling mill with many cages for continuous casting and rolling stripe of metal wire. In work the simplest is used in use, certainly a steady, economic difference method, a method of division of variables of a multidimensional task into a chain of one-dimensional tasks, a method of total approximation, the locally one-dimensional scheme. The algorithm of numerical modeling of distribution of a temperature field on cages of the rolling mill is constructed. Solutions of the three dimensional temperature field distribution tasks based on experimental data allows finding the temperature across the strip of metal rod in a rolling mill stands. Calculation of the distribution of temperature field in hearth of deformation of a metal rod was realized on implicit scheme. The calculations are shown in the graphs. It provides an analysis of the error of errors.
Dostawca treści:
Biblioteka Nauki
Artykuł
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