National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.00 seconds. 
Návrh inovace konstrukční skladby dřevěného jádra snowboardu
Bátěk, Silvestr
This diploma thesis describes the comparison of two different kinds of structures of snowboard wooden core. One is a combination of ash and poplar (long known and reliable structure currently used by the company Hackboards Ltd.). The other is tested combination when abele is replaced by lighter balsa wood. For both types of core the same types of fibreglass, base and top sheet are used (triaxial fibreglass, sintered base, protective top sheet). The individual mouldings were cut to the required sample on which the tests were made for the determination of bending strength according to ČSN EN 310 and impact bending according to ČSN EN ISO 179-1. Then according to ČSN EN 322 and ČSN EN 323 the moisture and density of used wooden boards were set. The measured results were evaluated and presented in charts and tables in the experimental part of this work.
Pevnost lepeného spoje vodáckých pádel
Jonáš, Martin
This work deals with the strength of the bond with paddles made of solid wood. The samples were made of solid wood blanks from spruce, alder and ash. There were used three types of adhesives in samples - polyvinyl acetate, melamine-urea-formaldehyde and epoxy resins. For these samples the effect of the species and different types of adhesive bonded joints for strength in bending was studied. Also described herein is cutting samples, bonding joints and their testing methodology. In the literature review are discussed various issues such as conditions affecting the adhesive bond, the adhesive film formation components adhesives etc., that are associated with this topic.
Nekróza jasanu Chalara fraxinea - fenologie, bionomie, charakteristika symptomy, rozšíření na revíru Běstvina, LS Nasavrky, LCR, s.p.
Koudelka, Ladislav
The population of common ash (Fraxinus excelsior) is decimated in most European countries a pathogenic fungus Chalara fraxinea. This is the main cause of decline and death of common ash. This thesis deals with occurrence and impact of this fungus on common ash forests in Železné Mountain. For comparison mortality stands were selected three sites. From the collected material on the sites was successfully isolated by the laboratory pathogen. Results of field monitoring showed that the damage is very serious and threatening to collapse populations of ash stands.

National Repository of Grey Literature : 13 records found   previous11 - 13  jump to record:
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