Wyniki wyszukiwania - Biblioteka Nauki

1

The melanin of the myxomycete Stemonitis herbatica

100%

Loganathan P. , Kalyanasundaram I.

Acta Protozoologica

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1999

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tom 38

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nr 2

2

Optimization of bioinsecticides overproduction by Bacillus thuringiensis subsp. kurstaki using linear regression

86%

Ennouri K. , Hassen H. B. , Zouari N.

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tom 62

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nr 3

EN

A multiple linear regression analyses were performed to screen for the significant factors simultaneously influencing production of delta-endotoxin, proteolytic activities and spore formation by a Bacillus thuringiensis kurstaki strain. Investigated factors included: pH of the medium, available oxygen and inoculum size. It was observed that oxygen availability was the most influencing setting on both deltaendotoxins production and spores counts, followed by initial pH of the medium and inoculum size. On other hand, pH of medium was found to be the most significant parameter for proteolytic activity, followed by inoculum size and dissolved oxygen. Our results suggested that the first order with two-factor interaction model seemed to be more satisfactory than simple first order model for optimization of delta-endotoxin overproduction. The coefficients of determination (R²) indicated a better adequacy of the second order models to justify the obtained data. Based on results, relationships between delta-endotoxins production, proteolytic activities and spores counts were established. Our results can help to balance delta-endotoxins production and its stability.

3

Two new Carboniferous fertile sphenophylls and their spores from the Czech Republic

86%

Libertin M. , Bek J. , Drabkova J.

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nr 4

EN

Two new species of sphenophyllalean strobili with in situ spores are proposed from the Radnice Basin of the western and central Bohemian Carboniferous continental basins of the Czech Republic. Bowmanites brasensis sp. nov. from Břasy (Matylda Mine) and B. pseudoaquensis sp. nov. from Ovčín locality are determined mainly on the basis of their spores, which are about 100 μm in diameter. The thick−walled exine of the miospores is laevigate or sometimes very finely scabrate on the proximal contact area. Spores resemble the dispersed species Punctatisporites obesus. Cones of B. brasensis and B. pseudoaquensis are organically connected with stems having prominent blade leaves and represent a new group of sphenophyllalean strobili.

4

The spores of Alternaria in aeroplankton and its relationships with the meteorological factors

86%

Grinn-Gofron A.

Acta Agrobotanica

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2009

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tom 62

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nr 1

EN

Alternaria spores are known to be potent aeroallergens and their concentrations in the air are strongly dependent on meteorological factors. There are many articles from different parts of the world about relationships between Alternaria spore count and weather parameters. The aim of the study was to review all available publications about airborne Alternaria spores and compare the results in short, useful form.

PL

W wielu pracach dotyczących badań nad stężeniem zarodników rodzaju Alternaria w powietrzu pojawiały się różnego rodzaju analizy statystyczne opisujące charakter zależności pomiędzy stężeniem spor w powietrzu i czynnikami pogodowymi. W większości przypadków były to proste statystyki opisowe m.in. współczynnik korelacji Spearmana czy analiza regresji wielokrotnej. W ciągu ostatnich kilku lat ukazało się kilka prac z prognostycznymi modelami statystycznymi (Szwecja, Grecja, Polska). Statystycznie istotne, pozytywne korelacje były notowane dla dobowych temperatur maksymalnych i średnich a negatywne dla: wysokości opadów deszczu, ciśnienia atmosferycznego, temperatury punktu rosy i prędkości wiatru. Żaden z autorów nie zanotował istotnej statystycznie korelacji pomiędzy stężeniem zarodników rodzaju Alternaria a temperaturą minimalną. Przy obecnym stanie badań nad relacjami statystycznymi pomiędzy obecnością (stężeniem) zarodników w powietrzu a czynnikami meteorologicznymi warto budować statystyczne modele prognostyczne, które dają bardziej precyzyjne informacje o badanych związkach i znacznie upraszczają prognozowanie sezonów zarodnikowania i konstruowanie kalendarzy dla lekarzy alergologów.

5

Some anomalies in the structure of spores of Myxobolus dispar Thelohan, 1895 [Myxosporidia]

86%

Chabros M.

Acta Parasitologica

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1993

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tom 38

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nr 3

6

Monitoring pollen and spores in the roof-top air stream of Edinburgh, Scotland

86%

Caulton E.

Annals of Agricultural and Environmental Medicine

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1996

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tom 03

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nr 2

7

The influence of meteorological factors on concentration of fungal spores in the air

86%

Medrela-Kuder E.

Polish Journal of Natural Sciences

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2003

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tom 15

8

The evaluation of methods for detection of Bacillus anthracis spores in artificially contaminated soil samples

72%

Bielawska-Drozd A. , Niemcewicz M. , Bartoszcze M.

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nr 1

5-10

EN

The nested PCR has been used to evaluate the usefulness and efficiency of different Bacillus anthracis spore isolation methods in contaminated soil samples. The best results were obtained using two methods described by Beyer et al. [1] and Cheun et al. [9]. Outer and inner pairs of primers were designed from the protective antigen gene of plasmid pXO1 as well as from genes B and C of the capsule region of the plasmid pXO2. The influence of soil types on obtained results was also studied. The type of soil samples did not affect the nested PCR results. Furthermore, the sensitivity of nested PCR and PCR – ELISA was also examined.

9

The occurrence of Ganoderma spores in the air and its relationships with meteorological factors

72%

Grinn-Gofron A.

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tom 63

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nr 1

EN

According to a recent study, Ganoderma may be the third genus, after Alternaria and Cladosporium, whose spores cause symptoms of allergy and whose levels are directly related to meteorological factors. There are only few articles from different parts of the world about the relationships between Ganoderma spore count and meteorological factors. The aim of the study was to review all available publications about airborne Ganoderma spores and to compare the results in a short useful form.

10

Variability of spores of Ceratomyxa appendiculata Thelohan, 1892 [Myxozoa, Bivalvulida]

72%

Maillo-Bellon P. A.

Acta Protozoologica

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2009

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tom 48

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nr 1

35-39

11

The occurrence of Cladosporium spores in the air and their relationships with meteorological parameters

72%

Grinn-Gofron A.

Acta Agrobotanica

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2009

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tom 62

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nr 2

EN

Together with Alternaria, Cladosporium spores are known to be potent aeroallergens and its concentrations in the air are strongly dependent on meteorological factors. There are many articles from different parts of the world about relationships between Cladosporium spore count and weather parameters. The aim of the study was to review all available publications about Cladosporium spores in the air and compare the results in a short, useful form.

PL

Zarodniki rodzaju Cladosporium są najczęściej i najliczniej notowanym taksonem grzybowym w większości stacji badawczych na świecie. Są też, razem z rodzajem Alternaria, uznane za czynnik wywołujący objawy alergii i astmy w okresie letnim czyli podczas wysokich temperatur i przy braku opadów. Było to powodem podjęcia prób określenia który z czynników pogody ma najsilniejszy wpływ na wysokość ich koncentracji w powietrzu. Statystycznie istotne, pozytywne korelacje były notowane dla dobowych temperatur maksymalnych, średnich i minimalnych a negatywne dla wysokości opadów deszczu i ciśnienia atmosferycznego. Żaden z autorów nie zanotował istotnej statystycznie korelacji pomiędzy stężeniem zarodników rodzaju Cladosporium a prędkością wiatru. W prognostycznych modelach statystycznych najważniejszymi czynnikami meteorologicznymi wpływającymi na obecność zarodników Cladosporium w powietrzu była średnia temperatura powietrza i temperatura punktu rosy. Przy obecnym stanie badań nad relacjami statystycznymi pomiędzy obecnością (stężeniem) zarodników w powietrzu a czynnikami meteorologicznymi warto popracować nad ulepszeniem istniejących metod badawczych lub zastosowaniem nowych, które precyzyjniej i bardziej jednoznacznie określiłyby rangę poszczególnych czynników meteorologicznych.

12

Effect of formic acid and heat treatment on Clostridium sporogenes spores inactivation in animal by-products

72%

Bauza-Kaszewska J. , Paluszak Z. , Keutgen A. J.

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nr 11

EN

The aim of the study was to investigate the effect of acidification and heat on the survival of Clostridium spores in third category animal by-products. Poultry minced meat and minced fish waste, contaminated with Clostridium sporogenes IW 1306 spore suspension, were subjected to the combined action of formic acid and high temperature of different values. To assess the efficiency of examined hygienization method, the spore number in biomass samples after acidification and heat treatment was estimated. For this purpose a 10-fold dilution series in peptone water was prepared and heat-treated at 80°C for 10 min. After cooling-down, one milliliter of each dilution was pour-plated onto DRCM medium solidified with agar. Statistical analyses were performed using the Statistica software. The results of the microbiological analysis show that lowering the pH to about 4 results in increasing the sensitivity of Clostridium sporogenes spores to a high – but not exceeding 100°C – temperature. The fastest inactivation of spores occurred after heating the acidified biomass at a temperature of 90°C. In the case of meat the 48-hour exposure to formic acid allowed the thermal inactivation of the spores within 15 minutes. The investigated method of hygienization may guarantee not only the inhibition of spores germination, but also enables their total elimination, reducing the epidemiological risk related to animal by-products handling.

13

Meriderma species (Myxomycetes) from the Polish Carpathians: a taxonomic revision using SEM-visualized spore ornamentation

72%

Janik P. , Ronikier A.

Acta Societatis Botanicorum Poloniae

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2016

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tom 85

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nr 1

EN

Meriderma represents a recently described genus of nivicolous myxomycetes with high morphological variability. Due to many complications in its taxonomy and species recognition in the past, the group was considered a morphologically variable complex. Recent clarifications and recognition of morphological boundaries into species and morphotypes has fostered a classification revision of specimens found in the Carpathians. Material used in this study was systematically collected in the Polish part of the Carpathians from 2004 to 2009. As a result of micro- and macroscopic observations of 54 collections, we recorded nine taxa of Meriderma. Seven of these (all but M. carestiae and M. cribrarioides) are the first records for Poland and for the Carpathians overall. Our observations based on analysis of spore ornamentation by SEM are in accordance with recently proposed classification and confirm segregation of taxa based on spore ornamentation pattern.

14

Effective, repeated and quick system of Cyathea delgadii propagation by somatic embryogenesis

72%

Mikula A. , Pozoga M. , Rybczynski J. J.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2014

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tom 56

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nr 1

15

The spore of the unicellular organism Nephridiophaga blattellae: ultrastructure and substances of the spore wall

72%

Radek R. , Klein G. , Storch V.

Acta Protozoologica

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2002

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tom 41

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nr 2

16

Release of actinosporean and myxosporean spores from their hosts, with special reference to both stages of Sphaerospora truttae [Myxozoa, Myxosporea]

72%

Ozer A. , Wootten R.

Acta Parasitologica

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2001

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tom 46

|

nr 2

17

Comparative studies of the occurrence of arbuscular fungi and mycorrhizae [Glomales] in cultivated and uncultivated soils of Poland

72%

Blaszkowski J.

Acta Mycologica

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1993

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tom 28

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nr 1

18

Monitoring of Alternaria ness and Cladosporium link airborne spores in Lublin [Poland] in 2002

72%

Konopinska A.

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tom 11

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nr 2

EN

The concentration of Alternaria and Cladosporium spores was monitored throughout the year 2002 in Lublin (Eastern Poland). Fungal spores were sampled with Lanzoni VPPS 2000 volumetric spore trap. The total annual spore concentrations of Alternaria and Cladosporium reached 30,880 and 865,254 spores/m3, respectively. The majority of Alternaria spores was collected between 17:00-20:00, whereas Cladosporium spores were caught between 9:00-10:00.

19

Ultrastructural description of Microsporidium brevirostris sp. n., parasite of the teleostean Brachyhypopomus brevirostris [Hypopomidae] from the Amazon River

72%

Matos E. , Azevedo C.

Acta Protozoologica

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2004

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tom 43

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nr 3

20

Notes on the ultrastructure of the Cougourdella sp. [Microspora, Cougourdellidae] a parasite of Ectocyclops phaleratus [Crustacea, Cyclopidae]

72%

Ovcharenko M. , Wita I.

Acta Parasitologica

|

2001

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tom 46

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nr 1