Autor: Ciechanowski, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Determination of the mass fraction of 10B in boric acid by the measurement of thermal neutron flux depression
Autorzy:: Bolewski Jr, A.
Ciechanowski, M.
Kreft, A.
Powiązania:: https://bibliotekanauki.pl/articles/146718.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: 10B
boric acid
252Cf neutron source
Monte Carlo N-particle (MCNP)
reactor coolant
thermal neutron absorption
Opis:: A thermal neutron absorption technique has been improved with the aid of Monte Carlo N-particle (MCNP) modelling and used for the determination of the mass fraction of 10B in boric acid. A relative standard deviation of that determination has been estimated to be below 0.12%. Owing to the good precision and simplicity, the presented technique could be helpful in nuclear plants with pressurized water reactors, where boric acid is added to the primary circuit coolant to control the chain reaction. Possible applications include the checking of the actual mass fraction of 10B in lots of boric acid delivered to nuclear power plants as well as calibration of instruments used for on-line monitoring the content of 10B in reactor coolants.
Źródło:: Nukleonika; 2012, 57, 4; 537-544
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: New data on the distribution of Carios vespertilionis Latreille, 1802 (Ixodida, Argasidae) in bats (Chiroptera) from northern Poland
Autorzy:: Mierzynski, L.
Izdebska, J.N.
Ciechanowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/6287.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Parazytologiczne
Źródło:: Annals of Parasitology; 2018, 64, 4
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Aktywność żerowiskowa nietoperzy w różnych fazach rozwojowych drzewostanów sosny zwyczajnej
Foraging activity of bats in Scots pine stands in different growth stages
Autorzy:: Węgiel, A.
Grzywiński, W.
Ciechanowski, M.
Jaros, R.
Kmiecik, A.
Kmiecik, P.
Wegiel, J.
Powiązania:: https://bibliotekanauki.pl/articles/989345.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
drzewostany sosnowe
sosna zwyczajna
Pinus sylvestris
fazy rozwojowe
zreby
uprawy sosnowe
drzewostany sredniowiekowe
drzewostany dojrzale
nietoperze
Chiroptera
roznorodnosc gatunkowa
aktywnosc zerowania
chiroptera
foraging activity
habitat use
forest management
pinus sylvestris
western poland
Opis:: Scots pine (Pinus sylvestris L.) is economically the most important tree species in Polish forestry. Congeneric pine stands have a quite low level of biodiversity, and logging with clear sites may even cause their further decline. It is very important to discover the influence of clear−cuttings in managed pine stands on different groups of organisms. One of them are bats which play an important role in forest biotopes as a regulator of insect pests. The aim of this paper is to compare the foraging activity of bats in pine stands of different stages of growth. The study was carried out in three complexes of pine forests in western Poland: Drawska Forest, Notecka Forest and Dolnośląskie Forests. Four types of growth phases were studied: clear−cut sites (Z), young plantations in the age 2−5 years (U), 41−60−years−old stands (III) and mature stands in the age over 80 years (V). The study of the foraging bat activity was conducted with broadband ultrasound detectors Pettersson D−1000X within 3 hours after sunset in summer periods of 2013 and 2014. The recordings were analyzed with BatSound software. Total 19 180 bat passes were recorded on all 120 sampling plots. 11 bat species: Nyctalus noctula, Pipistrellus pipistrellus, Eptesicus serotinus, P. nathusii, Myotis myotis, P. pygmaeus, M. nattereri, Barbastella barbastellus, N. leisleri, E. nilssonii and Vespertilio murinus and four groups of species: NEV (Nyctalus, Eptesicus, Vespertilio), MSP (Myotis), PSP (Pipistrellus), and PLE (Plecotus) were recognized (tab. 1). The dominant was common noctule N. noctula (71.5%). The highest foraging activity of bats was recorded in open areas: clear sites and plantations (fig. 1), next in mature stands and middle−aged stands. The obtained results suggest that bats can adapt to a mosaic of habitats created by clear−cutting harvesting system in managed pine forests.
Źródło:: Sylwan; 2016, 160, 09; 767-776
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki