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Wyświetlanie 1-15 z 91
Tytuł:
Comment on “A new Arctic hadrosaurid from the Prince Creek Formation (lower Maastrichtian) of northern Alaska” by Hirotsugu Mori, Patrick S. Druckenmiller, and Gregory M. Erickson
Autorzy:
Fiorillo, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/20315.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
new taxon
Arctic
hadrosaurid
Prince Creek Formation
Maastrichtian
Alaska
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distillation profiles in ternary heterogeneous mixtures with distillation boundaries: staged columns
Autorzy:
Królikowski, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/185501.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mieszaniny heterogeniczne
granice destylacji
destylacja
heterogeneous mixtures
distillation
distillation boundaries
distillation profiles
staged column
Opis:
Distillation boundaries originate from saddle azeotropes, dividing the composition space into distillation regions. In heterogeneous mixtures distilled in packed columns, distillation regions overlap. The common area of distillation regions is parametrically sensitive, and it determines the possibilities of crossing (at a finite reflux) the distillation boundaries defined for a total reflux or reboil ratio. This work is an extended research of the paper (Krolikowski et al., 2011) conducted to scrutinize whether the distillation regions overlapped in heteroazeotropic systems distilled in staged columns. Presented studies were performed by finding such composition points of the products, for which the rectifying profiles of staged columns were ended in different distillation regions. Calculations were executed for the heterogeneous mixture classified under Serafimov's topological class as 3.1-2: ethanol - benzene - water. Distillation regions for staged columns were found to overlap each other in the heterogeneous systems. As a result, their common part was parametrically sensitive.
Źródło:
Chemical and Process Engineering; 2012, 33, 2; 207-219
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetoacoustic tomography with magnetic induction for biological tissue imaging: numerical modelling and simulations
Autorzy:
Żywica, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/141738.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
finite element analysis
magnetoacoustic effects
medical diagnostic imaging
reconstruction algorithms
Opis:
Many imaging techniques are playing an increasingly significant role in clinical diagnosis. In the last years especially noninvasive electrical conductivity imaging methods have been investigated. Magnetoacoustic tomography with magnetic induction (MAT-MI) combines favourable contrast of electromagnetic tomography with good spatial resolution of sonography. In this paper a finite element model of MAT-MI forward problem has been presented. The reconstruction of the Lorentz force distribution has been performed with the help of a time reversal algorithm.
Źródło:
Archives of Electrical Engineering; 2016, 65, 1; 141-150
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of central composite design for the optimization of photodestruction of a textile dye using UV/S2O82- process
Autorzy:
Khataee, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/778871.pdf
Data publikacji:
2009
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
planowanie doświadczeń
metodologia powierzchni odpowiedzi
dekoloryzacja
experimental design
response surface methodology
decolorization
C. I. Basic Red 46
K2S2O8
Opis:
The photooxidative destruction of C. I. Basic Red 46 (BR46) by UV/S2O82- process is presented. Central Composite Design (CCD) was employed to optimize the effects of operational parameters on the photooxidative destruction efficiency. The variables investigated were the initial dye and S2O82- concentrations, reaction time and distance of the solution from UV lamp. The predicted values of the photodestruction efficiency were found to be in good agreement with the experimental values (R2 = 0.9810, Adjusted R2 = 0.9643). The results of the optimization predicted by the model showed that the maximum decolorization efficiency (>98%) was achieved at the optimum conditions of the reaction time 10 min, initial dye concentration 10 mg/l, initial peroxydisulfate concentration 1.5 mmol/l and distance of UV lamp from the solution 6 cm. The figure-of-merit electrical energy per order (EEo) was employed to estimate the electrical energy consumption and related treatment costs.
Źródło:
Polish Journal of Chemical Technology; 2009, 11, 4; 38-45
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Knowledge of basic production safety standards and rules of good agricultural practice in opinions of agricultural owners
Znajomość podstawowych standardów bezpieczeństwa produkcji i zasad dobrej praktyki rolniczej w opiniach właścicieli gospodarstw rolniczych
Autorzy:
Płonka, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/2117435.pdf
Data publikacji:
2019
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
the Code of Good Agricultural Practice
plant farms
sustainable development
sustainable agriculture
Kodeks Dobrej Praktyki Rolniczej
gospodarstwa roślinne
rozwój zrównoważony
zrównoważone rolnictwo
Opis:
The paper discusses the relation between issues related to environment protection and agricultural production carried out according to the adopted cultivation system. Surveys were conducted in 127 farms focused on plant production of which a fragment has been presented showing agricultural producers’ opinions about issues related to the Code of Good Agricultural Practice. One of underlying assumptions was an attempt to identify farmers’ attitudes to and their opinions about the practical application of principles adopted in the Code. The research shows that the application of the principles of good agricultural practice depended on the cultivation system adopted on the farm. Owners of farms managed in the integrated and organic production system fully declared knowledge of the Code itself and the content it contained, which translated into a higher level of their knowledge and implementation of recommendations in practice compared to people running traditional farms. One of major obstacles preventing the implementation of good agricultural practices by farms was the lack of information about the Code and promotion of its importance to the implementation of the concept of sustainable development.
W opracowaniu podjęto problem wzajemnych relacji pomiędzy kwestiami ochrony środowiska a produkcją rolną prowadzoną według przyjętego systemu uprawy. Badania przeprowadzono w 127 gospodarstwach rolnych nastawionych na produkcję roślinną, z których fragment zaprezentowano, ukazując stosunek producentów rolnych do zagadnień związanych z Kodeksem Dobrej Praktyki Rolniczej. Jednym z przyjętych założeń była próba identyfikacji postaw rolników i ich opinii na temat znajomości oraz stosowania w praktyce zasad zawartych w Kodeksie. Z badań wynika, iż stosowanie zasad dobrej praktyki rolniczej zależało od przyjętego w gospodarstwie systemu uprawy. Właściciele gospodarstw prowadzonych w systemie produkcji integrowanej oraz ekologicznej w pełni deklarowali znajomość samego Kodeksu, oraz zawartych w nim treści, co przekładało się na wyższy poziom ich wiedzy oraz realizację zaleceń w praktyce w porównaniu z osobami prowadzącymi gospodarstwa tradycyjne. Jednymi z głównych przeszkód wdrażania dobrych praktyk rolniczych w gospodarstwach był brak informacji i promowania znaczenia Kodeksu dla realizacji koncepcji zrównoważonego rozwoju.
Źródło:
Acta Scientiarum Polonorum. Oeconomia; 2019, 18, 3; 65-72
1644-0757
Pojawia się w:
Acta Scientiarum Polonorum. Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wieloogniskowe zarażenia grzybami u kobiet: prewalencja, charakterystyka gatunków i niektórych cech wewnątrzgatunkowych
Multifocal mycoses in women: prevalence, species characteristics, and some intraspecific features.
Autorzy:
Mamos, A.R.
Kurnatowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2147369.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
pochwa
zmiennosc gatunkowa
zakazenia grzybicze
ogniska zakazenia
jama ustna
wieloogniskowosc
odbyt
zmiennosc wewnatrzgatunkowa
czynniki chorobotworcze
grzyby
parazytologia lekarska
kobiety
grzybice
Opis:
The aim of this study was to detect fungi in three ontocenoses of 947 women (aged 20-45). The prevalence of multifocal fungal infections in women varied from 62.2 + 2.99% to 81.0 + 3.92% in different ontocenoses. They assumed the following mean values: 38.4 + 1.77% for the vagina, 42.2 + 1.80% for the oral cavity, and 25.0 + 1.58% for the anus. The clinical manifestations of sexual organs inflammations were statistically significantly (p < 0.01) more frequent in women infected with fungi than in those without fungi in the vaginal ontocenosis. The highest convergence of the fungi presence with subjective and objective symptoms (assessed using the Yule Q index value) concerned: pruritus of the vulva or/and vaginal walls, burning sensation or painful urethra, as well as oedema of the external opening of the urethra, vulva or/and the vagina (Q from +0.808 to +0.970). However, there was no statistically significant convergence between occurrence of the fungi and vaginal discharge and painful hypogastrium. Based on more than 40 phenotypical features (morphological, biochemical) of the axenic strains originating from vaginal, oral, and anal ontocenoses, a total of 12 species of fungi were identified: Candida albicans, C. guilliermondii, C. krusei, C. tropicalis, C. kefyr, C. utilis, C. humicola, C. viswanathii, C. glabrata, C. parapsilosis, Rhodotorula mucilaginosa, and Geotrichum candidum. For intraspecific features, depending on the profile of the compounds used for auxanogram, 9 codes were read for Candida albicans and only one code for each of other species was detected. In API ZYM test based on assessment of 19 hydrolase activities the enzymograms of species included from 6 to 11 enzymes.
Źródło:
Wiadomości Parazytologiczne; 2004, 50, 3; 373-379
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison of oxygen diffusion rates in sand moistened with water or PEG 20000 solution
Autorzy:
Hiller, S.
Dexter, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/24419.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
sand
air
oxygen diffusion
polyethylene glycol
water
Źródło:
International Agrophysics; 1997, 11, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wieloogniskowe zarazenia grzybami u kobiet: prewalencja, charakterystyka gatunkow i niektorych cech wewnatrzgatunkowych
Autorzy:
Mamos, A.R.
Kurnatowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/839747.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
pochwa
zmiennosc gatunkowa
zakazenia grzybicze
ogniska zakazenia
jama ustna
wieloogniskowosc
odbyt
zmiennosc wewnatrzgatunkowa
czynniki chorobotworcze
grzyby
parazytologia lekarska
kobiety
grzybice
Źródło:
Annals of Parasitology; 2004, 50, 3; 373-379
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interaction between larval alpha-amylase of the tomato leaf miner, Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) and proteinaceous extracts from plant seeds
Autorzy:
Esmaeily, M.
Bandani, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/65574.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
interaction
larva
alpha-amylase
tomato leafminer
Tuta absoluta
Lepidoptera
Gelechiidae
plant extract
seed
plant seed
Opis:
The tomato leaf miner, Tuta absoluta Meyrick (Lepidoptera: Gelechiidae), is one of the most destructive pest of solanaceae and it prefers tomato (Solanum lycopersicum L.). The aim of the current study was to investigate the effects of a wide range of seed proteinaceous extracts from different plant families against T. absoluta α-amylase activity. The effect of pH on the inhibitory activity of seed extracts showed that seed extracts of amaranth along with a wheat cultivar (Alvand, Aflak, Sarvdasht, Alborz, and Kavir) produced more than a 50% inhibition of the insect amylase. Aflak wheat seed extract at 10 μg, inhibited 81% of the insect amylase. This percent was the highest inhibition achieved. The other proteinaceous seed extracts had a lower effect on the enzymatic activity. Probit analysis showed that Aflak, Kavir, Alborz, Alvand, Sarvdasht, and amaranth inhibited the amylase activity with an I50 of 1.94, 3.24, 3.46, 3.31, 4.97, and 15.39 μg, respectively. The effect of pH on the inhibition of the α-amylase showed the highest inhibition of Amaranth and wheat, at a pH value of 8.0, which corresponds to the pH of the insect’s gut. Gel electrophoresis assays confirmed the spectrophotometric assays showing that the α-amylase of the insect gut was affected by the presence of the seed extracts. In the gel assay, a high concentration (14 μg protein) of amaranth proteinaceous seed extract greatly decreased the intensity of the α-amylase band. A high concentration of the Aflak wheat cultivar (10 μg protein) caused the disappearance of the amylase band in the gel. Thus, it is concluded that the physiochemical environment of the insect gut affects the interaction between digestive α-amylase and the metabolites. The experiments showed that seed proteinaceous extracts from non-host plant species, produced more inhibition of the insect amylase when compared to the host plant species. It appears that with evolution, adaptation took place so that insect/s could overcome the plant metabolites.
Źródło:
Journal of Plant Protection Research; 2015, 55, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pirimicarb, an aphid selective insecticide, adversely affects demographic parameters of the aphid predator Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae)
Autorzy:
Rahmani, S.
Bandani, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/66870.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
carbamate
pirimicarb
insecticide
demographic parameter
Hippodamia variegata
Coleoptera
Coccinellidae
aphid
pest control
Opis:
Demographic toxicology is recommended for toxicity determination of the long term effects of a pesticide since it gives a more accurate and efficient measure of the effect of a pesticide. Thus, in the current study the sublethal effects of pirimicarb (carbamate insecticide) two concentrations of LC30 and LC10 were used against third instar larvae of Hippodamia variegata (Goeze) in order to determine the effects of the pesticide on demographic parameters of the predator under laboratory conditions. Results showed that pirimicarb did not affect individual life parameters such as development time of larva, pupa, adult longevity, female and male longevity, adult preoviposition period (APOP), and total preoviposition period (TPOP). However, population parameters such as intrinsic rate of increase (r), net reproductive rate (R0), mean generation time (T), and finite rate of increase (λ) was affected by sublethal treatment. For example, intrinsic rate of increase (r) was 0.18 day–1 in the controls but it was 0.13 and 0.14 day–1 in the treated insects with LC10 and LC30 concentrations, respectively. Also, there were significant differences between mean generation time (T) of the treatments and the controls i.e. mean generation time of the controls was 29.03 days while mean generation time in the two treatments of LC10 and LC30 was 33.93 and 31.66 days, respectively. The finite rate of increase was also significantly affected by sublethal effects of the pesticide. The results showed that pirimicarb, even at low concentrations, has potential to adversely affect the predatory ladybird, therefore care should be taken when this insecticide is used in the Integrated Pest Management (IPM) program.
Źródło:
Journal of Plant Protection Research; 2016, 56, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chamelea gallina in the coastal waters of the Anapa bay bar (the Black Sea) as a carbonate sediment producer
Autorzy:
Kosyan, A.R.
Divinsky, B.V.
Powiązania:
https://bibliotekanauki.pl/articles/47884.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Chamelea gallina
biomass
population
shell length
coastal water
bivalve
carbonate sediment
Anapa Bay
Black Sea
Źródło:
Oceanologia; 2019, 61, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of soil type on the wilting of plants
Autorzy:
Czyz, E.A.
Dexter, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/24622.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
It has been shown that the water remaining in soil when plants wilt due to soil limitations and the residual water content as observed when soils are de-watered in pressure cell apparatus are essentially the same. Both are produced by immiscible displacement of water by air, and this leads to the water remaining in soil not being in thermodynamic equilibrium. Water removal by immiscible displacement ceases when hydraulic cut-off is reached. The point of hydraulic cut-off may be calculated by fitting waterretention data to equations for both the non-equilibrium case and the equilibrium case, and then solving these simultaneously. This has been done forwater retention data for 52 soil horizons in Poland. These results are used to obtain a pedotransfer function for the permanent wilting point due to soil limitations and the results are presented for the different soil texture classes. The pore water suction when wilting occurs is estimated to be 1.0 MPa. The methods and findings in this paper are used to explain a range of published results on plant wilting.
Źródło:
International Agrophysics; 2013, 27, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Defense responses of rice plant to Monographella albescens attack
Autorzy:
Almas, D.E.
Kamrodi, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/2084805.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
defense-signaling genes
enzyme activities
Monographella albescens
rice
RT-qPCR
Opis:
Leaf scald, caused by the necrotrophic fungus Monographella albescens, is one of the main threats to rice (Oryza sativa L.) around the world. This disease decreases yields in rice by up to 30% because of dead leaf tissue, damaged seeds, and sterile flowers. Currently, there is limited knowledge about the molecular mechanisms involved in rice plant resistance against this pathogen. For this purpose, six commercial cultivars of rice were primarily screened for M. albescens infection and development. Dasht and Salari were found to be the most resistant and susceptible to M. albescens infection, respectively. The plants were kept in a greenhouse at 29 ± 2°C during the day and 26 ± 2°C at night with a relative air humidity of 85 ± 5%. Forty-five days after sowing, the plants with three biological replications were inoculated by transferring a PDA disc (0.3 cm2) containing M. albescens mycelia to the middle third of the 7th, 8th, and 9th completely open leaves. The leaves were collected 24, 48, 72, 96 and 120 hai. Leaf samples were also collected from the non-inoculated plants (0 h) to serve as controls. Real-time quantitative PCR (RT-qPCR) showed rapid induction and significant accumulation of jasmonic acid (JA) and ethylene (ET) responsive genes such as lipoxygenase (LOX), allene oxide synthase 2 (Aos2), jasmonic acid carboxyl methyltransferase 1 (JMT1) and ACC synthase 1 (ACS1) in the resistant Dasht cultivar after infection with M. albescens. Furthermore, the transcripts of salicylic acid (SA) responsive phenyl alanine ammonia lyase 1 (PAL1) and nonexpressor of pathogenesis-related genes 1 (NPR1) genes were induced in the incompatible interaction. The activities of the defense enzymes superoxide dismutase (SOD), peroxidase (POX) and glutathione reductase (GR) increased strongly in Dasht in response to M. albescens infection. In addition, there was an increase in the H2 O2 levels in the leaves of the Dasht cultivar during the infectious period of M. albescens associated with the enhancement of catalase (CAT) activity as well as higher levels of malondialdehyde (MDA). This is the first study on the interaction between rice and M. albescens at the molecular level. It can contribute to understanding how rice responds to pathogen infection, as well as assist with future research plans of molecular breeding regarding the tolerance to leaf scald disease.
Źródło:
Journal of Plant Protection Research; 2019, 59, 4; 535-543
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new Maastrichtian species of the centrosaurine ceratopsid Pachyrhinosaurus from the North Slope of Alaska
Autorzy:
Fiorillo, A.R.
Tykoski, R.S.
Powiązania:
https://bibliotekanauki.pl/articles/23291.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Maastrichtian species
new species
centrosaurine ceratopsid
ceratopsid
Pachyrhinosaurus
Alaska
dinosaur
Pachyrhinosaurus perotorum
Dinosauria
Centrosaurinae
Cretaceous
Prince Creek Formation
Arctic
paleontology
remains
Opis:
The Cretaceous rocks of the Prince Creek Formation contain the richest record of polar dinosaurs found anywhere in the world. Here we describe a new species of horned dinosaur, Pachyrhinosaurus perotorum that exhibits an apomorphic character in the frill, as well as a unique combination of other characters. Phylogenetic analysis of 16 taxa of ceratopsians failed to resolve relationships between P. perotorum and other Pachyrhinosaurusspecies (P. canadensis and P. lakustai). P. perotorum shares characters with each of the previously known species that are not present in the other, including very large nasal and supraorbital bosses that are nearly in contact and separated only by a narrow groove as in P. canadensis, and a rostral comb formed by the nasals and premaxillae as in P. lakustai. P. perotorum is the youngest centrosaurine known (70–69 Ma), and the locality that produced the taxon, the Kikak−Tegoseak Quarry, is close to the highest latitude for recovery of ceratopsid remains.
Źródło:
Acta Palaeontologica Polonica; 2012, 57, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 91

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