136 research outputs found

    Miks peaksin oma auto viima ülevaatusele?

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    Eesti Arst 2017; 96(1):4

    Kas arst on sündinud juht ja õpetaja?

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    Eesti Arst 2015; 94(7):38

    Meckeli divertikuliit

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    Eesti Arst 2023; 102(9):484–48

    Diplomijärgse arstiõppe reformimine: palju rääkimist, vähe kuulamist, kaotajaks jääb resident

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    Eesti Arst 2015; 94(7):401–40

    Thermally modified hybrid aspen

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    This thesis is focused on thermal modification of hybrid aspen (Populus tremula L. x Populus tremuloides Michx.), its mechanical properties, wood defects and potential use in construction. In the recent years, wood as a building material has become increasingly popular. It is preferred because of its aesthetic appeal; it is renewable and substitutes fossil-based energy consuming materials. However, greater use of wooden products can also put more pressure on our natural forests. The main problems discussed in this paper were: mechanical characteristics after intense thermal modification and overall quality characteristics of thermally modified hybrid aspen. The present thesis conducts an empirical research of harvesting model trees, band sawing them into boards and kiln-drying, in order to prepare samples for thermal modification. Specimens were prepared for compressive strength, bending strength and wood density testing. Mechanical tests were carried out following the standards of ISO 13061-17, ISO 13061-3 and ISO 13061-2, accordingly. Furthermore, thermally treated sample boards from hybrid aspen (Populus tremula L. x Populus tremuloides Michx.), were evaluated according to 14 predetermined quality characteristics. Thermally modified hybrid aspen showed lower wood density and lower bending strength, but higher compressive strength in comparison with untreated hybrid aspen material. Wood quality evaluation showed that hybrid aspen had almost two times more wood defects compared to European aspen. Thermal modification process had statistically insignificant effect on measured wood quality. As a result, it can be said, that despite the decrease of some mechanical properties, thermally modified hybrid aspen still has a potential in areas where load bearing abilities are not so important, for example sauna interiors and interior panelling

    Äge E-viirushepatiit. Haigusjuhu kirjeldus

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    E-hepatiidi viirus avastati 1983. aastal. Kuni viimase ajani oldi arvamusel, et E-hepatiit on vaid endeemilistes piirkondades esinev haigus ja sellesse haigestutakse neid piirkondi külastades. Nüüdseks on kirjanduses rohkesti andmeid, et E-hepatiit võib esineda Euroopas ka omamaise haigusena. Kirjeldatud on 48aastase meespatsiendi haigusjuhtu, kes haigestus ägedasse hepatiiti ja kel leiti veres E-hepatiidivastased antikehad. Haiguse kulg oli soodus, haige paranes.Eesti Arst 2013; 92(10):587–58

    Kaitsealuste loomaliikide kriminaalõiguslik kaitse

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    http://www.ester.ee/record=b4411910~S1*es

    Pop-jazz muusikaõpe laste ja noorte huvihariduses 2005. aastal loodud pop-jazzmuusika näidisõppekava kontekstis : magistritöö

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    http://tartu.ester.ee/search~S1*est?/Xpeep+pihlak&searchscope=1&SORT=D/Xpeep+pihlak&searchscope=1&SORT=D&SUBKEY=peep%20pihlak/1%2C23%2C23%2CB/frameset&FF=Xpeep+pihlak&searchscope=1&SORT=D&1%2C1%2
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