Factors affecting Bluetongue serotype 8 spread in Northern Europe in 2006: The geographical epidemiology

AbstractIn this study the effects of bird size, genus, habitat, song community and geographical distribution on song structure and singing behaviour of some passcrine species in northern Europe were simultaneously studied. Most species tend to improve their long distance song propagation in their specific habitat and song community. Song propagation correlates strongest with the use of low-pitched elements but not all birds are able to use these because of size limitation. In forest habitats whistles and modulated elements were used to improve song propagation. In open habitats high-pitched elements as well as repeated and trilled syllables were often used for better propagation of acoustic information. In song communities with a great number of species, the birds reduce song interference by other singers, by singing short songs and using modulated elements and long intersong pauses. When the birds greatly profit from effective long distance song propagation, like in northern areas with only short time for pair formation, the birds can segregate in singing time by using the light nights for singing. In these communities with low numbers of species the birds have been freed from song interference and have long songs and short intersong pauses and they can increase in this way their singing rate. The effect of song community on song length, intersong pause and the use of modulated elements in the song is stronger than that of habitat. The effect of the song community increases towards the north.

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Reproductive traits and factors affecting the size at maturity ofCancer pagurusacross Northern Europe

ICES Journal of Marine Science ◽

10.1093/icesjms/fsw081 ◽

2016 ◽

Vol 73 (10) ◽

pp. 2572-2585 ◽

Cited By ~ 9

Author(s):

Jodie A. Haig ◽

Snorre Bakke ◽

Michael C. Bell ◽

Isobel S. M. Bloor ◽

Mike Cohen ◽

...

Keyword(s):

Reproductive Traits ◽

Northern Europe ◽

Size At Maturity ◽

Factors Affecting

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Infection of Picea abies clones with a homokaryotic isolate of Heterobasidion parviporum under field conditions

Canadian Journal of Forest Research ◽

10.1139/cjfr-2014-0247 ◽

2015 ◽

Vol 45 (3) ◽

pp. 227-235 ◽

Cited By ~ 7

Author(s):

S. Keriö ◽

S.M. Niemi ◽

M. Haapanen ◽

G. Daniel ◽

F.O. Asiegbu

Keyword(s):

Picea Abies ◽

Norway Spruce ◽

Cell Walls ◽

Necrotic Lesion ◽

Field Conditions ◽

Economic Losses ◽

Northern Europe ◽

Infection Frequency ◽

Factors Affecting ◽

Starting Point

Heterobasidion parviporum Niemelä & Korhonen is responsible for the majority of decay in conifers in northern Europe, which causes severe economic losses. In nature, heterokaryotic isolates of H. parviporum cause infection in Norway spruce (Picea abies (L.) Karst.). However, little is known on whether homokaryons of H. parviporum can infect trees under field conditions. In this study, 40-year-old clonal Norway spruce stems and roots were inoculated with a homokaryotic isolate of H. parviporum under field conditions. After four months, the infection frequency and necrotic lesion lengths were recorded. The homokaryon caused infection and provoked the development of necrotic lesions. Necrotic lesions were larger in roots than in stems. Among the studied Norway spruce genotypes, a Russian clone had the smallest necrotic lesions, whereas a Finnish clone developed the largest necrotic lesions. Clones with higher growth rates were more sensitive to fungal infection and wound damage. Under microscopic observation, H. parviporum grew adpressed to lumen cell walls, colonized tracheids next to rays, and induced lignification in cell walls close to the point of inoculation. This study provides a starting point for further studies on the ability of homokaryons to cause infection under field conditions and for discussions on factors affecting the resistance of Norway spruce against H. parviporum.

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Cuticular Wax Composition of Wild and Cultivated Northern Berries

Foods ◽

10.3390/foods9050587 ◽

2020 ◽

Vol 9 (5) ◽

pp. 587 ◽

Cited By ~ 1

Author(s):

Linards Klavins ◽

Maris Klavins

Keyword(s):

Mass Spectrometry ◽

Cuticular Wax ◽

Gas Chromatography Mass Spectrometry ◽

Northern Europe ◽

Extreme Temperatures ◽

Plant Surface ◽

Cuticular Waxes ◽

Factors Affecting ◽

Surface Wax ◽

Layer Composition

The outer-most layer of plant surface, the cuticle, consists of epi- and intra-cuticular wax. It protects the plant from dehydration, extreme temperatures and UV radiation, as well as attacks from pests such as molds and bacteria. Berry cuticular waxes are studied to understand the metabolism character (factors affecting wax layer composition in different berry species) and increase the microbial resistance and shelf life of berries. The aim of this study was analysis of the surface wax composition of nine species of wild and cultivated berries from Northern Europe. Cuticular wax analysis were done using gas chromatography-mass spectrometry. A total of 59 different compounds were identified belonging to nine groups of compounds, namely, alkanes, phytosterols, alcohols, fatty acids, phenolic acids, ketones, aldehydes, esters and tocopherols. The analyzed blueberries had the highest amount of wax present on their surface (0.9 mg berry−1), triterpenoids were the main wax constituent in these berries, with up to 62% wax composition. Berry species and varieties were compared based on their surface wax composition—similarities were found between different blueberry varieties; however, other berries showed differences based on concentration and composition of cuticular wax.

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Cultural Islam in Northern Europe

Baltic Region ◽

10.5922/2079-8555-2019-3-8 ◽

2019 ◽

Vol 11 (3) ◽

pp. 142-160 ◽

Cited By ~ 1

Author(s):

Svetlana Yu. Dianina ◽

Mona Abdel Malik Khalil ◽

Vladimir S. Glagolev

Keyword(s):

Cultural Context ◽

European Countries ◽

Practical Significance ◽

Northern Europe ◽

Media Content Analysis ◽

Factors Affecting ◽

International Partnership ◽

Northern European ◽

Mechanisms Of Adaptation ◽

Flexible Adaptation

In this study, we aim to analyse the position of cultural Islam in Northern European countries. To this end, we examine publications in major print media. Content analysis of relevant publications gives a detailed picture of narratives produced in mass consciousness as a reaction to the presence of Islam at the local and regional level and makes it possible to identify individual trends in the evaluation of such narratives in both scientific and popular analytical literature. The growing secularization of Islamic communities in Northern Europe and changes in the value-driven behavioural algorithms of believers lead both to the polarization of Islam and changes in attitudes to Islam from outside the religion. Studies into the factors affecting the dynamics of this phenomenon have both theoretical and practical significance since they help to evaluate the most promising forms of cooperation within regional collaborations and national programmes for international partnership. The forces promoting the cultural Islam project position it as an antidote for political and radical Islam. At the same time, the main factor preventing the legitimation of cultural Islam across immigrant Moslem groups (or, more precisely, communities, i.e. associations of people originating from countries where Muslims predominate) is the relevant isolatedness of those groups and their commitment to the Ummah. The novelty of research into how Islam and culture interact within those groups is closely associated with the goal of establishing whether cultural Islam is viable as a phenomenon of collective consciousness and whether it meets the following requirements: 1) satisfying the essential need for preserving the tradition and 2) ensuring flexible adaptation to a foreign cultural context. Our analysis of the data obtained has led us to conclude that cultural Islam is gaining ground within immigrant communities and associations. This can be viewed as a practical contribution to studies into the dynamics and mechanisms of adaptation, acculturation, and, perhaps, integration of Muslims and corresponding social groups into the socio-cultural space of Northern European countries.

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Progress In The Practical Application Of Automated Image Analysis To Tem Negatives

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100078614 ◽

1977 ◽

Vol 35 ◽

pp. 214-217

Author(s):

F. A. Heckman ◽

E. Redman ◽

J.E. Connolly

Keyword(s):

Image Analysis ◽

Image Quality ◽

Exposure Time ◽

Image Contrast ◽

Automated Image Analysis ◽

Practical Application ◽

Factors Affecting ◽

High Image Quality ◽

Qualitative Evidence ◽

Comprehensive Study

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.

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Factors affecting microstructural scale in liquid crystalline polymers

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100174230 ◽

1990 ◽

Vol 48 (4) ◽

pp. 220-221

Author(s):

Christine M. Dannels ◽

Christopher Viney

Keyword(s):

Liquid Crystalline ◽

Liquid Crystalline Polymers ◽

Factors Affecting ◽

Crystalline Polymers ◽

Thermal Expansion Coefficients ◽

Low Thermal Expansion ◽

Lower Viscosity ◽

Fine Microstructure ◽

Planar Orientation ◽

Strength And Stiffness

Processing polymers from the liquid crystalline state offers several advantages compared to processing from conventional fluids. These include: better axial strength and stiffness in fibers, better planar orientation in films, lower viscosity during processing, low solidification shrinkage of injection moldings (thermotropic processing), and low thermal expansion coefficients. However, the compressive strength of the solid is disappointing. Previous efforts to improve this property have focussed on synthesizing stiffer molecules. The effect of microstructural scale has been overlooked, even though its relevance to the mechanical and physical properties of more traditional materials is well established. By analogy with the behavior of metals and ceramics, one would expect a fine microstructure (i..e. a high density of orientational defects) to be desirable.Also, because much microstructural detail in liquid crystalline polymers occurs on a scale close to the wavelength of light, light is scattered on passing through these materials.

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