One of the leading places in complex measures to increase productivity forests and rational use wood resources is occupied by thinning for forest care. Timely justified maintenance allows not only increasing sustainability forests, size use, but also creating prerequisites effective implementation environmental protection climate control functions forests. Growing highly productive stands optim...

Coppices are a major potential source of forest biomass in Spain, where they occupy around 4M ha. Quercus coppices mostly neglected because their high harvesting costs and the small size products. This makes them very interesting to test compare alternative means for utilizing resources an optimized way. Hence, comparative study motor-manual mechanized felling bunching was conducted when thinni...

in this work we introduce a practical use of synthesized schiff base metal complex in sensing application. a new perchlorate-selective electrode based on the complex n, n'-4-nitro-phenylmethanebis-(salicylaldiminato) copper (ii) [cul] as the membrane carrier was developed. the electrode exhibits a good  nernstian slope of -55.0 ± 1.0 mv/decade and a linear range of  for perchlorate. the limit o...

there are many evidences that human serum paraoxonase activity modifies plasma lipid profile and paraoxonase has an antiatherogenic property. non-selective beta-blockers affect plasma lipid profile too, but they have atherogenic property when patients take these drugs in long term. in this study the effect of propranolol, a non-selective beta-blocker, on paraoxonase activity was investigated. l...

a pvc membrane electrode based on 1-[({[(butylsulfunyl)carbothioyl]disulfanyl} carbothioyl)sulfanyl]butane as a suitable ion carrier for determination of lanthanum(iii) ion was prepared. this electrode revealedsuch a good selectivity toward la3+ ion over a wide variety of other metal ions. some experimental parametersuch as membrane composition, nature, and amount of plasticizer, the amount of ...

The effects of girdling were analysed in a sessile oak (Quercus petraea Matts. Leibl.) forest with an 80-year-old coppice with standard structure in northern Spain. The study evaluated the viability of girdling as an alternative to felling trees during crown thinning. Eighty-four direct competitors of selected future crop trees were girdled by double notching and peeling. Three years after gird...

Different methods of measuring and calculating the volume of logs in the forest after felling (“hand measuring”) and in log yards of sawmills (“electronic measuring”) give different results – volume of logs. The subject of this paper is the quantification of differences caused by the number and direction of scanning, by rounding and by volume calculation. The main results of measuring carried o...