Changes in the carbon stocks of stem biomass, organic layers and the upper 50 cm of the mineral soil during succession and afforestation of spruce (Picea abies) on former grassland were examined along six chronosequences in Thuringia and the Alps. Three chronosequences were established on calcareous and three on acidic bedrocks. Stand elevation and mean annual precipitation of the chronosequenc...

This experiment was designed to characterize the effects of size and concentration of an Iranian clinoptilolite zeolite on the growth ofFicus benjamina (starlight) in peat base media. Ficus benjamina was stock rooted and grown in a peat consisting perlite (2: 1 v/v) (P: Pe), zeolite (10, 20, 30 and 40 v/v %, two sizes 0.5-3 mm and 3-8 mm) instead of peat in P: Pe (2: 1 v/v) media. Ficus benjami...

In this paper we consider closed loop two-echelon repairable item systems with repair facilities both at a number of local service centers (called bases) and at a central location (the depot). The goal of the system is to maintain a number of production facilities (one at each base) in optimal operational condition. Each production facility consists of a number of identical machines which may f...

Transmissible spongiform encephalopathies (TSEs) are an important public health concern. Since the emergence of bovine spongiform encephalopathy (BSE) during the 1980s and its link with human Creutzfeldt-Jakob disease, active surveillance has been a key element of the European Union's TSE control strategy. Success of this strategy means that now, very few cases are detected compared with the nu...

a r t i c l e i n f o JEL classification: Q43 F3 G14 G15 Keywords: Stock market returns Oil price fluctuations Gregory–Hansen co-integration test Toda–Yamamoto Granger non-causality test The main focus of this study is to examine how oil price fluctuations influence the performance of stock markets. This study used the causality approach developed by Toda and Yamamoto (1995) to explore the caus...

The efficacy of different refining stages on physicochemical parameters, heavy metal, and mineral contents sesame oil were investigated. from (crude oil, neutralization, bleaching, deodorization, stages) was taken the local factory in Yazd, Iran. fatty acid composition samples determined by GC-FID. oxidation indexes including peroxide value, p-Anisidine, free acid, TOTOX, total polar material, ...

This paper presents a data-driven language independent word segmentation system that has been trained for Chinese corpus at the second Chinese word segmentation bakeoff. The system consists of a base segmentation algorithm and the refining procedures for the undecided character sequences. It does not use any lexicon and the base segmentation is simply done by character bigram and HMM-model is a...