Chromophores' Contribution to Color Changes of Thermally Modified Tropical Wood Species.

This work examines the effect of thermal modification temperature (180, 200, and 220 °C) in comparison with reference (untreated) samples on selected optical properties of six tropical wood species-Sp. cedar (), iroko (), merbau ( spp.), meranti ( spp.

Relation of Chemical Composition and Colour of Spruce Wood.

The visual inspection of fresh cut spruce wood (, L. Karst.) showed the variability of its colour.

Dry-Matter Loss and Changes in the Chemical Composition of Spruce Wood after Long-Term Storing in the Form of Roundwood.

Wood stock in a warehouse is a necessary precondition for reliable manufacturing. However, wood can degrade and lose the matter during storage. "Dry-matter loss (DML)" is used to quantify the degradation following the changes in mass of a wood substance.

Do we know the cause of the highest colorectal cancer incidence, the changes in the mortality trends and the clinical stages in the Slovak and Czech Republic, the representatives of the Central European region?

Slovak (SR) and Czech (CR) Republics reach up the highest recorded incidence rates of colorectal cancer. In analysis of the development and changes in colorectal cancer incidence in the above-mentioned countries, it was reported the most considerable incidence increase of the disease in males in the SR, then in males in the CR, subsequently in females in the SR and the slowest incidence rate was reported in females in the CR. Colorectal cancer mortality increased most rapidly in males in the SR, then in males in the CR, slower increase was reported in females in the SR and in females in the CR the mortality was in the long term stabilized.

Prospective follow-up of patients with bile duct strictures secondary to laparoscopic cholecystectomy, treated endoscopically with multiple stents.

Background/aims: The frequency of iatrogenic postoperative benign strictures has substantially increased in recent years and this is thought to be because of the widespread use of laparoscopic cholecystectomy. Our study was performed prospectively with the goal to investigate the short-term and long-term outcome for endoscopic treatment with insertion of multiple stents in patients with postoperative benign common bile duct stricture after laparoscopic cholecystectomy.

Methodology: Overall 43 consecutive patients with history of laparoscopic cholecystectomy were enrolled and followed prospectively between December 1998 and December 2003.