نتایج جستجو برای: stand volume reduction
تعداد نتایج: 817809 فیلتر نتایج به سال:
Jonsson. B. 2001. Volume yield to mid-rotation in pure and mixed sown stands of Pirl~ls sylcestris and Pice& uhies in Sweden. Stztrliu Forestulir~ Suecicu 211. 19 pp. ISSN 0039-3150. ISBN 91-576-6137-5. Volume yield to mid-rotation in pure and mixed sown stands of Scots pine and Norway spruce was investigated in an experiment in central Sweden. The 43-year-old stands were situated on a 7-ha sit...
Wood is an important component of forested stream ecosystems, and stream restoration efforts often incorporate large wood. In most cases, however, stream restoration projects are implemented without information regarding the amount of wood that historically occurred or the natural rates of wood recruitment. This study uses a space-for-time analysis to quantify large wood loading to 28 streams i...
According to the IPCC GPG (Intergovernmental Panel on Climate Change, Good Practice Guidance), remote sensing methods are especially suitable for independent verification of the national LULUCF (Land Use, Land-Use Change, and Forestry) carbon pool estimates, particularly the aboveground biomass. In the present study, we demonstrate the potential of standwise (forest stand is a homogenous forest...
Lung volume reduction surgery, originally used in the 1950s, has reemerged as a technique that may help some individuals with end-stage emphysema breathe more easily. The goal of the surgery is to enhance elastic recoil of the lung and to restore diaphragmatic function. The surgery is still in the experimental stages, but early outcome data are encouraging. The purpose of this study was to disc...
BACKGROUND Endoscopic lung volume reduction (ELVR) has become an established treatment option in selected patients with end-stage lung emphysema. ELVR, however, does not always prevent disease progression, and patients may inevitably be considered for lung transplantation. OBJECTIVES Currently, limited data exist regarding the impact of preceding ELVR on lung transplantation outcomes. METHO...
The lung-volume reduction procedure is a palliative one, designed to relieve dyspnea, and improve the patient's ability to carry out routine activities of daily living without significant limitations. The rationale for this procedure and its development are discussed. In addition, patient selection, operative technique, postoperative care, results, and complications are considered. Ultimately, ...
Another comment refers to transepithelial elimination of neutrophils during resolution of NCAP. The interesting proposed hypothesis of inflammatory resolution through egression of leukocytes is very attractive [3]. C.G.A. Persson and L. Uller argue that elimination of leukocytes from the airways with bronchial inflammation (transepithelial egression) is a mode of resolving inflammation. This ch...
There are limited therapies for severe emphysema. Bronchoscopic treatments of emphysema were introduced to achieve the beneficial physiological changes seen in surgical lung volume reduction; however, at the present time these treatments are mostly aimed at improving quality of life and functional status in patients with emphysema. At this time, none of these minimally invasive approaches have ...
Lung volume reduction surgery (LVRS) is a costly procedure that can improve quality and quantity of life. Given the prevalence of emphysema, the costs involved with its management, and resource constraints on all health care delivery systems, evaluating the cost-effectiveness of LVRS is important. In this article, we describe the purposes and principles of cost-effectiveness analysis and how th...
BACKGROUND Lung volume reduction surgery (LVRS) performed to treat patients with severe diffuse emphysema was reintroduced in the nineties. Lung volume reduction surgery aims to resect damaged emphysematous lung tissue, thereby increasing elastic properties of the lung. This treatment is hypothesised to improve long-term daily functioning and quality of life, although it may be costly and may b...
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