نتایج جستجو برای: fig harvesting
تعداد نتایج: 84670 فیلتر نتایج به سال:
Humans have been harvesting wild populations for the entire extent of human history. In most early human societies, a successful hunt not only fed one’s family, but also brought respect from both family and community (Bolen and Robinson 2002). Although most North Americas and western Europeans today acquire their food that was planted, harvested, and processed by someone else, hunting and harve...
Wildflower harvesting is an economically important activity of which the ecological effects are poorly understood. We assessed how harvesting of flowers affects shrub persistence and abundance at multiple spatial extents. To this end, we built a process-based model to examine the mean persistence and abundance of wild shrubs whose flowers are subject to harvest (serotinous Proteaceae in the Sou...
Wild edible plants, ecological foodstuffs obtained from forest ecosystems, grow in natural fields, and their productivity depends on their response to harvesting by humans. Addressing exactly how wild edible plants respond to harvesting is critical because this knowledge will provide insights into how to obtain effective and sustainable ecosystem services from these plants. We focused on bamboo...
Models and experiments of the evolution of ageand/ or size-at-maturation in response to population harvesting have consistently shown that selective harvesting of older and larger individuals can cause earlier maturation. These predictions, however, are all based on single-species considerations and thus crucially neglect the selective forces caused or mediated by species interactions. Here we ...
OBJECTIVE Preparation of the great saphenous vein for coronary artery bypass grafts is usually performed through one or many cutaneous incisions. A technique of endoscopic harvesting is now available. An aim of the study was to compare both methods, prospectively. METHODS Sixty coronary artery bypass grafting patients were randomly assigned to two groups according to saphenous vein harvesting...
Hematopoietic stem and progenitor cell (HSPC) transplantations require prior harvesting of allogeneic or autologous HSPCs. HSPCs are usually present in bone marrow (BM) during the entire life, in cord blood (CB) at birth, or in peripheral blood (PB) under particular circumstances. HSPCs were first harvested in BM and later in CB and PB, as studies showed interesting features of such grafts. All...
multistage and semi-mechanized harvesting of rice in khouzestan province, iran, causes much loss. depending on available facilities and conditions, either spike-tooth or rasp-bar cylinders are employed with either direct or indirect combine harvesting methods. the present research studied the effect of these different harvesting methods on the amount of losses in two rice varieties in 2001-2002...
This experiment was conducted to find the best harvesting time for two olive cultivars Dezful and Zard in Fars province, Iran. Fruits were harvested in 10 days intervals from 11 September and their quantitative and qualitative characteristics were measured. Results indicated that for canning olive, the best harvesting time for Dezful cultivar was 23-31 October. At this time, fruits were in yell...
Vibration energy harvesting is being pursued as a means to power wireless sensors and ultra-low power autonomous devices. From a design standpoint, matching the electrical damping induced by the energy harvesting mechanism to the mechanical damping in the system is necessary for maximum efficiency. In this work two independent energy harvesting techniques are coupled to provide higher electrica...
REDUCING costs within the harvesting and transport system is a high priority for many sugar milling regions in Australia. Typical issues include reducing the number harvesting groups, harvesting over a longer time window in a day, rationalising infrastructure and achieving a better co-ordination between harvesting and transport activities. As part of a series of integrated models to conduct the...
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