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Showing 1 to 20 of 126 for “"DBH"”.
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Investigation of acquired hearing loss in dopamine beta hydroxylase (DBH)-mutant mice
… in a small group of dopamine beta hydroxylase (DBH)- knockout mice, which are known to be susceptible to middle-ear disease. We measured auditory brainstem response (ABR) and distortion-product otoacoustic emission (DPOAE) thresholds, as well as sound-induced umbo velocity, and used standard …
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Using machine learning methods to estimate spruce tree crown and DBH from aerial imagery
… (TCD) and Diameter of tree Breast Height (DBH), and this DBH can be further used to estimate the tree biomass volume. Here, Spruce trees top-view images were taken by a DJI Mavic 3, at an altitude of 50m above ground. We measured the actual TCD and DBH in the field. 2,155 spruce trees were …
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A GENETIC COMPARISON OF PITUITARY PARS INTERMEDIA DYSFUNCTION POSITIVE & NEGATIVE EQUINES AT DBH, TO AID IN THE DEVELOPMENT OF GENETIC DIAGNOSTIC PROTOCOLS.
… follicles, the dopamine beta-hydroxylase gene (DBH) was studied as a candidate gene for association with PPID. Preliminary research indicates high levels of variation in all animals sampled, with no correlation to PPID, indicating further research must be conducted to determine the genes …
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Evaluating the performance of multi-rotor UAV-Sfm imagery in assessing simple and complex forest structures: comparison to advanced remote sensing sensors
… Tree Height (TH) and Diameter at Breast Height (DBH) are two major variables in biomass assessment. UAV-based TH estimations depend on reliable Digital Terrain Models (DTMs), while UAV-based DBH estimations depend on reliable dense photogrammetric point cloud. The main aim of this study was to …
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Dopamine-Beta-Hydroxylase and Norepinephrine Transporter Immunoreactivity in Rat Taste Buds
… the taste bud. Immunocytochemical analysis of DBH has shown that DBH–LIR is present in taste cells of the rat circumvallate papillae. Specifically, DBH–LIR is present in a subset of Type II taste cells. Nearly all (98%) DBH–LIR cells express PLCβ2–LIR, and about half (41%) of PLCβ2–LIR cells …
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Testing methods for calibrating Forest Vegetation Simulator (FVS) diameter growth predictions
… of change in diameter at breast height (DBH) over time. To address the challenge of predicting growth in highly variable and geographically expansive forest systems, FVS was designed to include an internal calibration algorithm that makes use of growth observations, when available, from …
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Effect of upper stem diameter and errors of measurement on the accuracy of volume equations
Measurements of DBH, upper diameters, merchantable height and total heights were made on 80 standing white oaks (<i>Quercus alba</i>) which were then felled for detailed measurements of the same parameters. The data obtained were used to evaluate the accuracy of standing tree measurements, to …
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A stand level multi-species growth model for Appalachian hardwoods
… minimum stand diameter, and arithmetic mean dbh) were projected through time for the whole stand and for individual species groups. Future diameter distributions were obtained using the three-parameter Weibull probability density function and parameter recovery method. The recovery method …
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Compatible whole-stand and diameter distribution models for loblolly pine plantations
… (such as average diameter at breast height (dbh) or total volume per acre) and the whole stand estimation of the attribute was defined. The given estimates of k stand attributes from whole stand models, the k parameter of the pdf were estimated (recovered). Two types of parameter recovery …
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Winter habitat use by Blackburnian Warblers (Dendroica fusca) in Los Amarillos, Colombia
… and the random plots. Density of trees in all dbh (diameter at breast height) categories, density of snags and density of native trees and shrubs were higher at the bird-centered plots. Percentage vegetation density (understory foliage volume) from O-1m, 1-2m and 2-3m were lower at …
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Response of uneven-aged in interior Douglas-fir stands to precommercial thinning in central interior, British Columbia
… The growth of basal area per ha, quadratic mean dbh, volume per ha and Lorey’s height were used for stand level analyses. At the tree level, dbh, height, basal area and volume were the variables of interest. At the stand level, mortality increased (7.1 to 107.1 stems/ha) and ingrowth decreased …
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Habitat Use by Beaver Along the Big Sioux River
… and farmed habitat. Diameter at breast height (DBH) of trees in grazed areas was greater (p < 0.01) than in ungrazed or farmed areas. Almost half (48%) of the trees in ungrazed areas were small (DBH < 7.5 cm), while a majority (58%) of the trees in grazed areas had large diameters (DBH > 30 cm). …
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Habitat Selection By Female White-Tailed Deer in the Northern Black Hills, South Dakota and Wyoming
… canopy cover, density of tall shrubs < 12.7 cm dbh, tree basal area, ground cover of grass-forb and shrubs < lm in height, distance (m) and diameter (cm dbh) of the nearest tree, and topographic variables. During winter, coniferous canopy cover, tree basal area, and grass-forb cover were …
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Y-family DNA polymerase architecture: three structural features control accurate deoxy CTP insertion opposite N2-deoxy-guanine-benzo-a-pyrene
… Y-Family DNAPs includes hDNAP k, EcDNAP IV and SsDbh, which insert accurately opposite N2-dG adducts, including BP-N2-dG formed from benzo[a]pyrene (BP). Another class includes hDNAP h, EcDNAP V and SsDpo4, which insert accurately opposite UV-damage. For correct Watson-Crick pairing between …
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Fruit-based allometry of Strychnos madagascariensis, S. spinosa, and Trichilia emetica in the savanna woodlands of the Umhlabuyalingana municipality, KwaZulu-Natal, South Africa
… fruit biomass, diameter at breast height (DBH), canopy diameter, and total height. Six forms of the allometric models were fitted to the data using ordinary least squares method. DBH was the only appropriate variable in the prediction of the fruit biomass and explained 99.9% of the …
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Winter movements and habitat use of northern saw-whet owls at Assateague Island, Maryland
… measured included number of stems 2.5 cm DBH, roost tree height, roost tree species, canopy cover, average canopy height, average shrub height, roost DBH, distance to nearest tree, and percent ground cover. Vegetation also was measured at a random in similar habitat. Logistic regression …
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Nonlinear Approaches to Predicting Diameter of the Largest Limb at Breast Height in Young, Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) Plantations Growing in the Pacific Northwest
… the exponential portion. The second method used DBH as the base factor and estimated the parameters with simple linear functions of tree- and stand- variables. The second method proved superior as it simplified the model forms and preserved the allometric relationship between DLLBH and DBH. DLLBH …
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Cytotoxicity and anti-mycobacterial activities of sclerocarya birrea and Dodonae viscosa anguistifolia against MTB strain
… of 8 crude extracts (SBC, SBH, SLC. SLH, DBC, DBH, DLC, DLH). Phytochemical analysis was conducted on all extracts using thin layer chromatography (TLC), the profiling of metabolites was achieved with liquid chromatography-Mass spectrometry (LCMS) method. The antimycobacterial activity against …
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A Quantitative Analysis of the Vegetation of Post Oak Savannas in Taney County, Missouri
… and the restored savanna. Mean tree size (DBH) was greatest in the old growth savanna and lowest in the closed woodland. Canopy tree diversity was the highest in the closed woodland and lowest at the old growth savanna. Total shrub cover and diversity were highest in the woodland and lowest …
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The use of roll-off bins and a hook-lift equipped harwarder and truck for forest biomass utilization
… a sawyer for trees less than 4.5 inches DBH, fellerbuncher for roundwood material, rubber-tired grapple skidder, delimber at the landing, and a forwarder for collecting trees less than 4.5 inches DBH. This system resulted in a net cost of $366.59 per acre or $10.77 per ton. System costs …
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