نتایج جستجو برای: floor fraction

تعداد نتایج: 183485  

2010
R. F. Walker W. Cheng D. W. Johnson

—Ectomycorrhizal colonization and rooting characteristics were quantified in a mature ponderosa pine (Pinus ponderosa Dougl. ex Laws.) stand in the western Sierra Nevada. Root length totaled 3835.9 m ⋅ m–2 of forest floor surface area, with 96% consisting of the fine-root fraction. Total root dry weight and volume were 2230.4 g ⋅ m–2 and 5807.4 cm3 ⋅ m–2 of forest floor area, respectively, with...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Ricardo J Soares Magalhães Adrian G Barnett Archie C A Clements

Globally, inadequate water supply, sanitation, and hygiene (WASH) are major contributors to mortality and burden of disease. We aimed to quantify the role of WASH in the risk of Schistosoma hematobium, Schistosoma mansoni, and hookworm infection in school-aged children; to estimate the population attributable fraction (PAF) of helminth infection due to WASH; and to spatially predict the risk of...

Journal: :International journal of oral and maxillofacial surgery 2012
D Rickert J J R Huddleston Slater H J A Meijer A Vissink G M Raghoebar

Literature regarding the outcome of maxillary sinus floor elevation to create sufficient bone fraction to enable implant placement was systematically reviewed. Bone fraction and implant survival rate were assessed to determine whether grafting material or applied growth factor affected bone fraction. Trials where sinus floor elevations with autogenous bone (controls) were compared with autogeno...

Journal: :Applied optics 2010
Steven Mitchell Jeffrey P Thayer Matthew Hayman

A bathymetric, polarization lidar system transmitting at 532 nm and using a single photomultiplier tube is employed for applications of shallow water depth measurement. The technique exploits polarization attributes of the probed water body to isolate surface and floor returns, enabling constant fraction detection schemes to determine depth. The minimum resolvable water depth is no longer dicta...

Journal: :Animal : an international journal of animal bioscience 2007
F-X Philippe M Laitat B Canart M Vandenheede B Nicks

The aim of this study was to compare the environmental impact of the straw-flow system for fattening pigs with the slatted-floor system by measuring pollutant gas emissions such as ammonia (NH3), nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2), manure nitrogen (N) content and emissions of water vapour (H2O). Three successive batches of 32 pigs were fattened. For each batch, pigs wer...

Journal: :The Economic Journal 2022

Abstract We evaluate the impact of a price floor for alcohol introduced in Scotland 2018, using difference-in-differences strategy with England as control group. show that policy led to largest reductions units purchased among heaviest drinkers—the group who, at margin, are likely create externalities from drinking. The is well targeted heavy drinkers because they buy much greater fraction thei...

Journal: :iranian journal of science and technology (sciences) 2015
a. khan

the presence of tribolium castaneum (herbst) in a stored food results in contamination and substantial economic damage due to loss of the products and a decrease in nutritional value. this study was conducted to determine the pesticidal and pest repellent activities of roots of laportea crenulata gaud. against t. castaneum. pesticidal activity was determined using surface film method, whereas, ...

Journal: :nephro-urology monthly 0
omer bayrak university of gaziantep, school of medicine, department of urology, 27310, turkey +90-5326428800, [email protected]; university of gaziantep, school of medicine, department of urology, 27310, turkey +90-5326428800, [email protected] ilker seckiner university of gaziantep, school of medicine, department of urology, 27310, turkey +90-5326428800, [email protected]

Journal: :Electronic Journal of Probability 2023

We study the interface of Ising model in a box side-length n Z3 at low temperature 1∕β under Dobrushin’s boundary conditions, conditioned to stay half-space above height −h (a hard floor). Without this conditioning, Dobrushin showed 1972 that typically most is flat 0. With floor, for small h, expected exhibit entropic repulsion, where typical lifts off Detailed understanding SOS model—a more tr...

Journal: :Journal of environmental biology 2007
Murat Demir E Makineci E Yilmaz

In this study the impact of production work on the skid roads that have been carried out for many years by manpower animal power or machinery in a beech (Fagus orientalis Lipsky) stand have been examined. For this purpose, herbaceous understory, forest floor and soil samples were collected from the undisturbed area and the skid road. Weight per unit area (kg ha(-1)), organic matter ratio and mo...

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