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A consortium is one of the forms of cooperative activity often chosen in situations where technical, financial or human resources of companies are limited. The study attempts to assess the role of consortia in the forest service sector in Regional Directorate of the State Forests in Zielona Góra (western Poland) in years 2011−2018. In order to carry out the research, a database of enterprises was created. It consisted of entities listed as ‘contractors who submitted their offers’ in ‘notification of the best bid selection’ derived from the procedures of public procurement in the field of forestry (forest management, forest protection including fire prevention, harvest and skidding of timber, soil preparation, nursery works and seed collection) for years 2012−2020. The database consisted of 333 firms that participated in 169 tender procedures in 20 forest districts. Basing on the analysis of tenders for forest services, an activity of forest companies was assessed. The detailed analysis included the participation of companies in consortia, including the number and composition of consortia. In addition, the number of bids submitted by consortia and individual companies was analyzed, as well as the criteria for the evaluation of bids in terms of number, type and weight. It was found that more than 80% of companies operated in consortia. The vast majority of consortia were created for the needs of a given proceeding. The dynamics of cooperative activity was influenced by non−price criteria used in proceedings on forest services along with their weight, as well as the introduction of harvesting packages.
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100%
Phenolic acids from leaves and roots ofJovibarba sobolifera (Sims.) Opiz were analysed by means of the two-dimensional thin layer chromatography and by the RP-HPLC method. Twelve phenolic acids were identified by 2D-TLC: chlorogenic, gallic, protocatechuic, caffeic, p-coumaric, p-hydroxy- benzoic, p-hydroxyphenylacetic, vanillic, syringic, ferulic, synapic and a-rezorcylic. The RP-HPLC enabled describing the contents often major phenolic acids in the examined material.
GC MS methods were used to analyse sterol components of leaves and roots of Jovibarba sobolifera (Sims.) Opiz. ß-sitosterol, campesterol, 24-ethylcholestanol, 5ot-ergostan-3a-ol, -y-ergosteryl and 5a-stigmast-7-en-3a-ol have been identified in both fractions, ß-sitosterol and campesterol have been the predominant sterol components in the analysed leaves, whereas ß-sitosterol and 24-ethylcholestanol have been the main sterol components in the roots. Besides, by means of the weight method a total amount of sterols has been determined: 0.04% in leaves and 0.02% in roots.
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Celem prowadzonych badań było oszacowanie ewentualnych zależności pomiędzy genotypami TG/PsuI a wybranymi cechami użytkowości mlecznej (wydajność mleka, białka, i tłuszczu oraz zawartość białka i tłuszczu). Badaniami objęto 180 krów rasy jersey. Genotypy poszczególnych osobników oznaczano za pomocą metody PCR-RFLP. Frekwencja genotypów i alleli była następująca: CC – 053, CT – 0,44, CC – 0,03 oraz C – 0,75 i T – 0,25. Wprowadzonych badaniach nie wykazano statystycznie istotnych zależności pomiędzy genotypami TG a analizowanymi cechami, jednakże zaobserwowano tendencje do utrzymywania się powiązania genotypów z analizowanymi cechami użytkowości mlecznej.
Phenolic acids from pericarps, seeds and leaves in the C. japonica were analysed by means of two dimensional thin layer chromatography and RP-HPLC methods. The fourteen acids were identified. The following phenolic acids predominated in all the axaminated material: caffeic, protocatechuic, gallic, p-hydroxybenzoic, p-coumaric, ferulic, syringic, vanillic. The contents of nine major phenolic acids was described. In leaves acids occurred in the greatest content, especially caffeic (266.25 µg/g) and protocatechuic acid (123.80 µg/g).
Phenolic acids from herb of Linaria vulgaris (L.) Mill, were analysed by means of two di­mensional thin layer chromatography and RP-HPLC method. Ten acids were identified: protocatechuic, gallic, caffeic, p-hydroxybenzoic, p-coumaric, vanillic, ferulic, homoprotocatechuic, salicylic and o-hydroxyphenylacetic. By the RP-HPLC method the content of five major compounds in fraction of free phenolic acids was determined.
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