1. This study examines limitation of nesting resources for leaf-litter and twig-nesting ants as a mechanism of diversity loss across an intensification gradient of coffee production in Colombia. Twelve farms were selected and classified into four management types: forest, polygeneric shade coffee, monogeneric shade coffee, and sun coffee (unshaded coffee monocultures). 2. At each of the farms, ...

Previous studies have suggested that the risk of ischemic stroke increases immediately after drinking coffee. Indeed, drinking coffee, that is, caffeine, acutely increases arterial stiffness as well as blood pressure and peripheral vascular resistance. On the other hand, it has been reported that arterial stiffening is associated with elevation in the pulsatility index (PI) of cerebral blood fl...

Thís article cxamines recent transformations of the coffee landscape of northern Latin Ame rica through the optic of "place as process." As coffee became the most impurtant regional export crop, its "place" evolved. Coffee lands in northern Latin America now embrace 3.1 million hectares, often contiguous across international borders. Like many agricultural systems, coffee has succumbed to inten...

Coffee is a typical drink with substantial increasing in global. With the growing popularity of coffee consumption, raw materials of coffee bean are mostly imported and are increased year by year in Taiwan. The study is firstly based on a qualitative research method of an in-depth interview, discussion, field investigation, and analyzing environment of coffee industry in Taiwan to realize the p...

When a coffee drop dries on a solid surface, it leaves a ringlike deposit along the edge and this is known as the "coffee-ring effect." We find a different motion of particles repelling the coffee-ring effect in drying droplets; the motion of particles that is initially toward the edge by the coffee-ring effect is reversed toward the center by a capillary force. The reversal takes place when th...

This study examines, using quantile regression, the linkage between food security and efforts to enhance smallholder coffee producer incomes in Rwanda. Even though in Rwanda smallholder coffee producer incomes have increased, inhabitants these areas still experience stunting and wasting. This study examines whether the distribution of the income elasticity for food is the same for coffee and no...

Soluble coffee and roasted coffee beans were purchased on the local market and analysed for OTA using aminopropylsolid phase extraction column clean-up and quantitation with reversed phase HPLC. Preliminary results suggest that the levels of OT A in coffee on the South African market are slightly higher than on the European market. The levels varied between undetectable to 40 ng OT A per gram c...

Evidence demonstrating that regular ingestion of coffee has salutary effects on patients with chronic liver disease is accumulating rapidly. Specifically, it appears that coffee ingestion can slow the progression of liver fibrosis, preventing cirrhosis and hepatocellular carcinoma (HCC). This should excite clinicians and scientists alike, since these observations, if true, would create effectiv...

Studies have documented biodiversity losses due to intensification of coffee management (reduction in canopy richness and complexity). Nevertheless, questions remain regarding relative sensitivity of different taxa, habitat specialists, and functional groups, and whether implications for biodiversity conservation vary across regions.We quantitatively reviewed data from ant, bird, and tree biodi...

BACKGROUND The effect of coffee and caffeine on blood pressure (BP) and cardiovascular disease (CVD) in hypertensive persons is uncertain. OBJECTIVE The objective was to summarize the evidence on the acute and longer-term effects of caffeine and coffee intake on BP and on the association between habitual coffee consumption and risk of CVD in hypertensive individuals. DESIGN A systematic rev...