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Tytuł:
Wielowymiarowa analiza bankructwa przedsiębiorstw w przemyśle drzewnym
Multivariate analysis of bankruptcy in companies in the wood sector
Autorzy:
Adamowicz, K.
Noga, T.
Powiązania:
https://bibliotekanauki.pl/articles/990970.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
ekonomika lesnictwa
przemysl drzewny
przedsiebiorstwa
bankructwo przedsiebiorstw
modelowanie
model Altmana
model Maczynskiej
forestry economics
prediction
discriminant analysis
bankruptcy
Opis:
The article describes the accuracy of Altman and Mączyńska predictive models. The research material consisted only of financial economic reports from wood−furniture sector for years 2003−2012. Multiple discriminant analysis (MDA) was the main method applied in the study and which was used for three years in advance before bankruptcy. To evaluate the accuracy of the analysed models, the companies classification matrix and the odds ratio were used. Obtained results showed higher prediction accuracy of Mączyńska model. Moreover, comparing with the Altman model, Mączyńska system was better adapted as a multiple discriminant analysis model allowing forecasting of bankruptcy and continued functioning of companies in the wood sector.
Źródło:
Sylwan; 2014, 158, 09; 643-650
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mikrorozmnazanie wisienki stepowej [Cerasus fruticosa Pallas]
Micropropagation of sour cherry [Cerasus fruticosa Pallas]
Autorzy:
Szczygiel, K.
Wojda, T.
Powiązania:
https://bibliotekanauki.pl/articles/45526.pdf
Data publikacji:
2010
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drzewa
gatunki zagrozone
wisnia karlowata
Prunus fruticosa
mikrorozmnazanie
Źródło:
Leśne Prace Badawcze; 2010, 71, 4; 351-355
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Filtry piaskowe w ochronie roslin przed chorobami w szkolkach
Slow sand filters for plant protection in nurseries
Autorzy:
Kubiak, K.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/45702.pdf
Data publikacji:
2010
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
szkolki lesne
ochrona roslin
oczyszczanie wody
filtry piaskowe
skutecznosc
Źródło:
Leśne Prace Badawcze; 2010, 71, 4; 343-349
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detekcja fitopatogenów z rodzaju Phytophthora w glebach leśnych za pomocą analiz DNA
Detection of Phytophthora in forest soils using DNA analysis
Autorzy:
Kubiak, K.A.
Oszako, T.
Jabłoński, T.
Powiązania:
https://bibliotekanauki.pl/articles/996874.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gleby lesne
czynniki chorobotworcze
mikroorganizmy glebowe
Phytophthora
identyfikacja
analiza DNA
metoda nested-PCR
phytophthora
identyfication
dna isolation
forest soil
pcr
Opis:
Pathogenic oomycetes from the genus Phytophthora attack the base trunks and root systems of trees causing their illness and dying. Under favorable conditions, they may cause damage to even 90% of fine roots. For this reason, they are a particular threat to seedlings in nurseries of forest trees and ornamental plants. Early detection and identification of Phytophthora species is a key issue in forest protection. The aim of this study was to compare the two methods of identification of pathogenic Phytophthora in soil samples collected around 50 selected oaks in Krotoszyn and Karczma Borowa forest districts. Each of the soil samples were analyzed in parallel: 1) direct isolation of genomic DNA from soil and 2) isolation of genomic DNA from soil, preceded by its three day pre−incubation in a selective medium for Phytophthora. Species identification was performed by PCR amplification with primers specific for the species of Phytophthora. The results indicate that the use of pre−incubation phase of soil in a medium−PARP PeaBroth before isolation of DNA, increases the sensitivity of detection of these phytopathogens using PCR. With pre−incubation, the method revealed 54% of positive findings, while simultaneously conducted the same analysis of soil samples by using only direct DNA isolation from soil and PCR amplification provided only 30% of positive findings.
Źródło:
Sylwan; 2012, 156, 06; 437-443
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ksztaltowanie sie wezbran opadowych w Sudetach Zachodnich
Autorzy:
Ciepielowski, A.
Kucharska, K.
Wawrzoniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/969162.pdf
Data publikacji:
2001
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Sudety Zachodnie
Ciekon
rzeki
wezbrania wod
rownania regresji
Czerniawka
hydrografia
lesnictwo
hydrogramy
Ploczka
Źródło:
Prace Instytutu Badawczego Leśnictwa. Seria A; 2001, 2[913-916]; 59-87
0369-9870
Pojawia się w:
Prace Instytutu Badawczego Leśnictwa. Seria A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fotosynteza sosny zwyczajnej [Pinus sylvestris L.] na terenach promieniotworczych
Autorzy:
Krynytsky, G.T.
Zaika, V.K.
Powiązania:
https://bibliotekanauki.pl/articles/53379.pdf
Data publikacji:
2003
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
tereny skazone
sosna zwyczajna
lesnictwo
fotosynteza
Ukraina
Pinus sylvestris
drzewa lesne
Źródło:
Prace Instytutu Badawczego Leśnictwa. Seria A; 2003, 3[956-959]; 23-36
0369-9870
Pojawia się w:
Prace Instytutu Badawczego Leśnictwa. Seria A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wiek drzewostanu sosnowego a zmiennosc sum powierzchni przekroju i miazszosci drzew na powierzchniach probnych roznych wielkosci
Autorzy:
Meixner, J.
Kazmierczak, K.
Najgrakowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/816985.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
dendrometria
powierzchnie probne male
pomiary drzewostanow
wiek drzewostanu
dokladnosc pomiaru
lesnictwo
miazszosc drzew
powierzchnia przekroju piersnicowego
Źródło:
Sylwan; 1997, 141, 02; 49-58
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weryfikacja pochodzenia drzewiastych form kosodrzewiny na terenie Tatrzańskiego Parku Narodowego na podstawie polimorfizmu miejsc insercji transpozonów
Origin assessment of woody mountain pine forms in the Tatra National Park based on transposon insertional polymorphism
Autorzy:
Polok, K.
Zwijacz-Kozica, T.
Zieliński, R.
Powiązania:
https://bibliotekanauki.pl/articles/989538.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Tatrzanski Park Narodowy
sosna gorska
Pinus mugo
sosna drzewokosa
Pinus x rhaetica
pochodzenie roslin
identyfikacja
metody badan
insercja transpozonow
pinus×rhaetica
dna markers
ssap
genetic similarity
Opis:
Closely related Pinus species, mountain pine (Pinus mugo Turra) and Scots pine (Pinus sylvestris L.), belong to native woody species in the Tatra National Park (TPN, southern Poland). Their occurrence in close proximity can lead to the formation of natural hybrids known as Pinus × rhaetica, which is a woody, often polycormic form. Pinus×rhaetica is described in the TPN, but there has been a great deal of disagreement over its origin. The goal of the studies was to verify the taxonomic status of individuals identified as Pinus×rhaetica that grew in the eight stands together with P. mugo and P. sylvestris by SSAP (Sequence Specific Amplification Polymorphism) analysis of transposon insertional polymorphism. In total, 34 Pinus×rhaetica, 25 P. mugo and 27 P. sylvestris individuals were tested in addition to 20 individuals of P. uliginosa from ‘Torfowisko pod Węglińcem' and ‘Wielkie Torfowisko Batorowskie' as well as 25 individuals of P. uncinata from the Austrian Alps as the control groups. Four transposon sequences were employed: a DNA transposon from the CACTA family, Tpo and retrotransposons – two gypsy (Ogre, IFG7) and one copia like (Bare). All species belonging to the Pinus mugo complex are highly variable with 49−81% polymorphic loci and genetic diversity, HTequals 0.228−0.307 with the highest values in Pinus×rhaetica. Surprisingly, P. sylvestris proves to be the least variable species, likely because of a narrow gene pool in small, scattered stands in the Tatras. Very low Nei's genetic similarities between P. sylvestris and Pinus mugo complex, especially in comparison with P. uliginosa (I=0.548) and P. mugo (I=0.558) exclude unequivocally the possibility of spontaneous hybridization among these taxa. Thus, it undermines the hypothesis about hybrid origin of Pinus×rhaetica in the Tatras. It proves to be a morphological form of P. mugo as assessed from the Nei's coefficient, I=0.985 which is well within a range of conspecific populations. Finally, none of the studied individuals of Pinus×rhaetica are derived from seeds of Alpine P. uncinata.
Źródło:
Sylwan; 2016, 160, 07; 573-581
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzory empiryczne sluzace do wyznaczania piersnicy w korze na podstawie grubosci bez kory podstawy drzewa w drzewostanach sosnowych Polski
Autorzy:
Rymer-Dudzinska, T.
Dudek, A.
Michalak, K.
Wroblewski, L.
Powiązania:
https://bibliotekanauki.pl/articles/821154.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
dendrometria
Pinus
piersnice drzew w korze
sosna
lesnictwo
wzory empiryczne
Źródło:
Sylwan; 2000, 144, 07; 5-14
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zawartość związków biologicznie aktywnych w grzybach jadalnych dziko rosnących
Bioactive compounds content in edible wild-growing mushrooms
Autorzy:
Golak-Siwulska, I.
Kałużewicz, A.
Spiżewski, T.
Sobieralski, K.
Powiązania:
https://bibliotekanauki.pl/articles/986636.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
grzyby lesne
grzyby jadalne
grzyby dzikorosnace
substancje biologicznie czynne
polisacharydy
lektyny
zwiazki fenolowe
witaminy
zwiazki indolowe
dzialanie prozdrowotne
edible mushrooms
health−promoting substances
polysaccharides
antioxidants
polyphenols
Opis:
Mushrooms are traditionally used in folk medicine in Slavic and Asian countries, especially in traditional Chinese medicine. According to the contemporary scientific research wild−growing mushrooms contain many secondary metabolites of medicinal potential. These compounds were isolated both from mushroom fruiting bodies and mycelium. Many of these bioactive substances exhibit antibacterial, anti−oxidative, and anti−inflammatory properties. They have also anti−neoplastic, anti−diabetic, and anti−atherosclerotic activity. Mushroom metabolites include polysaccharides, sesquiterpens and triterpenoids which demonstrate anti−cancer and immunostimula− tory activity. Moreover, wild−growing mushrooms contain natural antibiotics and antioxidants. Mushroom species exhibit different antibacterial activity. It was found that mushroom extracts are more effective against Gram−positive than Gram−negative bacteria. Mushroom species vary significantly in their content of antioxidants. The main group of mushroom antioxidants are polyphenols, i.e. phenolic acids and flavonoids. Anti−oxidative potential of mushrooms is strongly correlated with the content of these compounds. Such species as Boletus edulis and Cantharellus cibarius demonstrate especially high antioxidant activity. Another group of antioxidants are tocopherols, carotenoids and ascorbic acid. Lectins isolated from wild−growing mushroom include polysaccharide−protein and polysaccharide−peptide complexes. They exhibit mainly antineoplastic and antiviral effect. Nowadays wild growing mushrooms are treated as a source of secondary metabolites, which can potentially be used in food, pharmacological and cosmetic industries. This paper reviews the latest scientific reports on bioactive substances identified in edible wild−growing mushrooms occurring in Poland.
Źródło:
Sylwan; 2018, 162, 03; 238-247
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Filtry piaskowe jako element zintegrowanej ochrony materiału rozmnożeniowego w szkółkach leśnych
Slow Sand Filters as a part of integrated protection of seedlings against disease in forest nurseries
Autorzy:
Oszako, T.
Kubiak, K.A.
Siebyła, M.
Nowakowska, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/1318288.pdf
Data publikacji:
2013
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
szkolki lesne
ochrona roslin
woda uzytkowa
oczyszczanie wody
filtry piaskowe
biofiltry
skutecznosc
redukcja mikroorganizmow
Phytophathogen
biofilm
SSF
PCNB
mineral fertilizer
Opis:
Slow Sand Filters (SSF) are a biological method used to protect nursery plants, from pathogen infections which can cause serious diseases in many forest tree species. Thanks to SSF application the number of phytopathogens in nurseries can be significantly reduced, as demonstrated by many field and greenhouse experiments (e.g. in Polish nurseries, and for horticultural crops in Germany and The Netherlands). In this study, the effect of pollution from fertilizers and fungicides used in agriculture (e.g. PCNB) on the efficiency of SSFs was assessed. A quantitative analysis was performed of the copiotrophic and oligotrophic bacterial composition colonizing SSF biofilms. The efficiency with which selected Oomycete strains belonging to the genus Phytophthora (P. alni, P. cactorum, P. plurivora) were removed from water was determined based on genetic material (DNA of the organisms) found in the SSF filtrate. Specific primers and TaqMan probes (qPCR) appeared to be the most sensitive molecular methods. Moreover, the microbiological analysis of SSF biofilm performed with selective media allowed the growth of copiothrophic and oligothrophic bacteria to be estimated. The influence of fungicide (PCNB) and N-fertilizer on the number of bacteria in each biofilm was also evaluated. The pollution of water with fertilizer (being used for plant irrigation) was demonstrated to reduce the efficiency of filtration more than fungicide addition (the amount of DNA from those investigated pathogens in the water decreased with time). The amount of bacteria in SSF biofilm readily increased after application of N-fertilizer in contrast to fungicide (PCNB) addition.
Źródło:
Leśne Prace Badawcze; 2013, 74, 1; 49-56
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pojemność gospodarcza łowisk leśnych na przykładzie Nadleśnictwa Kluczbork
Capacity of the forest hunting grounds on the example of the Kluczbork Forest District
Autorzy:
Wajdzik, M.
Tomek, A.
Kubacki, T.
Nasiadka, P.
Szyjka, K.
Powiązania:
https://bibliotekanauki.pl/articles/989939.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lowiectwo
gospodarka lowiecka
lowiska lesne
pojemnosc wyzywieniowa
jelenie
Nadlesnictwo Kluczbork
Osrodek Hodowli Zwierzyny Krystyna
food resources
red deer
game breeding centre
Opis:
The aim of the study was to determine the abundance of winter food of cervids and the capacity of the Game Breeding Centre 'Krystyna' administered by the Kluczbork Forest District (southern Poland). Research was based on the estimation of shoots available for cervids in winter time. Evaluation of annual increment of biomass was calculated on 160 circular plots, on which occurrence of trees and shrubs species was estimated (tab. 1). We assumed that the cervids cause 20% loss of growth of shoots for forest species and 90% for other species. Among the 4296 examined trees or shrubs we identified 15 deciduous and 4 coniferous species (tab. 2). The estimation of the potential food for cervids showed a significant variation depending on the species. Among the conifers, the largest total weight of shoots was observed for spruce and pine, while among the deciduous species, the largest reserves of shoots were noted for hornbeam, birch, beech and mountain ash (fig. 2). The so called secure resources amounts to approximately 8 t/1000 ha, which accounted for 35% of the total stock of shoots up to 2 m above the ground. The most food was offered by spruce and pine (over 2.5 t/1000 ha), and hornbeam, mountain ash, black cherry, birch, beech and alder buckthorn (fig. 4). Based on the calculated mass of the shoots possible to eat by deer without threat of the economic damage, we calculated capacity of the forest hunting grounds using two variants of the winter (short and long), and three variants of share the shoots in the diet. The obtained capacity amounted to on average from 120 to 144 deer/1000 ha during short winter or from 103 to 123 deer during the long winter. These results point to the urgent need to objectify the existing rules for determining allowable density of deer at the local level.
Źródło:
Sylwan; 2015, 159, 11; 958-968
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planowanie hodowlane z wykorzystaniem metody BDq w drzewostanach świerkowych na siedliskach bagiennych
Silvicultural planning in spruce mire forests by the means of the BDq method
Autorzy:
Drozdowski, S.
Andrzejczyk, T.
Bielak, K.
Buraczyk, W.
Gawron, L.
Powiązania:
https://bibliotekanauki.pl/articles/990869.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
hodowla lasu
siedliska lesne
siedliska bagienne
drzewostany swierkowe
swierk pospolity
Picea abies
struktura drzewostanu
planowanie hodowlane
metoda BDq
close−to−nature silviculture
equilibrium model
norway spruce mire forest
silvicultural planning
Opis:
This paper addresses problems associated with the silvicultural planning in the Norway spruce mire forests (Sphagno girgensohnii−Piceetum Polak. 1962) that are characterized by an uneven−aged structure and a high degree of irregularity at small scale. Based on detailed inventory using 30 permanent circular sample plots in two control units located in the Augustów Forest (NE Poland), the BDq method was employed for determining future silvicultural activities of the current forest management cycle. The equilibrium models are based on diameter distributions and have the following parameters, depending on site conditions: B=28 m²/ha; q−factor=1.32 and D=51 cm in the case of poorer forest site type (S.−P. typicum) and 55 cm more fertile one (S.−P. thelypteridetosum).
Źródło:
Sylwan; 2014, 158, 10; 733-742
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł

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