Determining an Allowable Wear of Worm Wheels

The paper presents an analysis based on the two criteria used to determine an allowable sliding wear of the worm gear side teeth and of the worm wheels. In both cases, two undesirable consequences occurred. The first one is a reduction in the tooth root cross section, which may lead to tooth fracture. The other one is the appearance of tooth tapers. Both consequences are undesirable in all types of gear transmissions because of the risk of tooth fracture

NUTRIENT UPTAKE DYNAMICS AND DRY MATTER ACCUMULATION IN HEMP IN RELATION TO NITROGEN FERTILIZATION

U dvogodišnjim poljskim pokusima (2004. i 2005. godine) na pokušalištu Visokoga gospodarskog učilišta u Križevcima provedena su istraživanja s ciljem utvrđivanja utjecaja rastućih količina dušika (0, 60, 120, 180 kg N/ha) u gnojidbi na akumulaciju suhe tvari te dinamiku usvajanja dušika, fosfora i kalija kod industrijske konoplje. Biljni materijal za analizu uziman je četiri puta tijekom vegetacije (20, 40, 60 i 80 dana nakon nicanja). Utvrđeno je da se povećavanjem količine dušika u gnojidbi od 0 do 180 kg/ha akumulacija suhe tvari povećavala, međutim dobivene razlike statistički su značajne samo u sušnoj 2005. godini i to u početnim fazama vegetacije (20 i 40 dana nakon nicanja). Najveća akumulacija suhe tvari odvija se između 40-tog i 60-tog dana nakon nicanja. U obje godine istraživanja udio dušika u suhoj tvari biljke značajno je rastao s povećanjem količine dušika danog gnojidbom samo između 20 i 40 dana nakon nicanja, dok nakon toga razdoblja količina dušika nije imala značajnog utjecaja na apsorpciju dušika. Najveća apsorpcija dušika odvija se između 20-tog i 40-tog dana nakon nicanja. Gnojidba dušikom u prvim fazama vegetacije rezultirala je smanjenjem, a u kasnijim fazama vegetacije povećanjem apsorpcije fosfora. Najintenzivnija apsorpcija fosfora odvija se između 20. i 40–tog dana nakon nicanja. Gnojidba dušikom nije imala utjecaja na apsorpciju kalija, a najveći udio kalija u suhoj tvari biljke utvrđen je 40 dana nakon nicanja.Two-years field trials (2004 and 2005), carried out on Križevci College of Agriculture experimental field sites, aimed at determining the effect of fertilization with increasing nitrogen quantities (0, 60, 120, 180 kg N/ha) on hemp dry matter accumulation and nitrogen, phosphorus and potassium uptake dynamics. Plant material for analyses was taken four times during the growing season (20, 40, 60 and 80 days after emergence). With increasing nitrogen quantities from 0 to 180 kg/ha accumulation of dry matter was increasing but statistically significant only in 2005 in initial vegetation stages (20 and 40 days after emergence). The most intensive accumulation of dry matter was between 40th and 60th day after emergence. In both years nitrogen content in plant dry matter was significantly increased with increasing amounts of nitrogen fertilizer only in the first two samplings 20 and 40 days after emergence, whereas after this period, nitrogen fertilizer quantity had no significant effect on the nitrogen content in plant dry matter. Maximum absorption of nitrogen was between 20 and 40 days after emergence. Nitrogen fertilization in early stages of vegetation resulted in a decrease of phosphorus share in dry matter and at the later stages of vegetation in an increase absorption of phosphorus. The most intensive absorption of phosphorus was between 20 and 40 days after emergence. Nitrogen fertilization had no effect on the absorption of potassium, and the largest proportion of potassium in plant dry matter was determined 40 days after emergence

NUTRIENT UPTAKE DYNAMICS AND DRY MATTER ACCUMULATION IN HEMP IN RELATION TO NITROGEN FERTILIZATION

U dvogodišnjim poljskim pokusima (2004. i 2005. godine) na pokušalištu Visokoga gospodarskog učilišta u Križevcima provedena su istraživanja s ciljem utvrđivanja utjecaja rastućih količina dušika (0, 60, 120, 180 kg N/ha) u gnojidbi na akumulaciju suhe tvari te dinamiku usvajanja dušika, fosfora i kalija kod industrijske konoplje. Biljni materijal za analizu uziman je četiri puta tijekom vegetacije (20, 40, 60 i 80 dana nakon nicanja). Utvrđeno je da se povećavanjem količine dušika u gnojidbi od 0 do 180 kg/ha akumulacija suhe tvari povećavala, međutim dobivene razlike statistički su značajne samo u sušnoj 2005. godini i to u početnim fazama vegetacije (20 i 40 dana nakon nicanja). Najveća akumulacija suhe tvari odvija se između 40-tog i 60-tog dana nakon nicanja. U obje godine istraživanja udio dušika u suhoj tvari biljke značajno je rastao s povećanjem količine dušika danog gnojidbom samo između 20 i 40 dana nakon nicanja, dok nakon toga razdoblja količina dušika nije imala značajnog utjecaja na apsorpciju dušika. Najveća apsorpcija dušika odvija se između 20-tog i 40-tog dana nakon nicanja. Gnojidba dušikom u prvim fazama vegetacije rezultirala je smanjenjem, a u kasnijim fazama vegetacije povećanjem apsorpcije fosfora. Najintenzivnija apsorpcija fosfora odvija se između 20. i 40–tog dana nakon nicanja. Gnojidba dušikom nije imala utjecaja na apsorpciju kalija, a najveći udio kalija u suhoj tvari biljke utvrđen je 40 dana nakon nicanja.Two-years field trials (2004 and 2005), carried out on Križevci College of Agriculture experimental field sites, aimed at determining the effect of fertilization with increasing nitrogen quantities (0, 60, 120, 180 kg N/ha) on hemp dry matter accumulation and nitrogen, phosphorus and potassium uptake dynamics. Plant material for analyses was taken four times during the growing season (20, 40, 60 and 80 days after emergence). With increasing nitrogen quantities from 0 to 180 kg/ha accumulation of dry matter was increasing but statistically significant only in 2005 in initial vegetation stages (20 and 40 days after emergence). The most intensive accumulation of dry matter was between 40th and 60th day after emergence. In both years nitrogen content in plant dry matter was significantly increased with increasing amounts of nitrogen fertilizer only in the first two samplings 20 and 40 days after emergence, whereas after this period, nitrogen fertilizer quantity had no significant effect on the nitrogen content in plant dry matter. Maximum absorption of nitrogen was between 20 and 40 days after emergence. Nitrogen fertilization in early stages of vegetation resulted in a decrease of phosphorus share in dry matter and at the later stages of vegetation in an increase absorption of phosphorus. The most intensive absorption of phosphorus was between 20 and 40 days after emergence. Nitrogen fertilization had no effect on the absorption of potassium, and the largest proportion of potassium in plant dry matter was determined 40 days after emergence

Peryferie w języku, literaturze i kulturze chorwackiej

Księga abstraktów oraz program międzynarodowej konferencji kroatystycznej, zorganizowanej w związku z jubileuszem 25-lecia filologii chorwackiej na Uniwersytecie Śląskim w Katowicach