Results 261 to 270 of about 2,302,708 (308)

Flexible free-standing antibacterial nanoporous Ag ribbon

Journal of Colloid and Interface Science, 2023
The biomedical field has the potential to significantly benefit from the use of flexible free-standing Ag nanostructures due to their outstanding mechanical and antibacterial properties. However, the intricate process of synthesizing these nanostructures, as well as the potential toxicity of nanostructured Ag, pose significant challenges.
Chaoyang Wang, Shengli Zhu, Yanqin Liang, Chunling Qin, Fang Wang, Hao Wang, Chuntao Chang, Akihisa Inoue   +7 more
openaire   +2 more sources

Random-Parameter Height/Age Models when Stand Parameters and Stand Age are Correlated

Forest Science, 1994
Abstract Height/age curves of dominant trees in a stand can be predicted using models containing random stand and tree parameters. If the population mean curve is estimated from the data where stand-specific parameters are correlated with stand age (e.g., because old stands are growing on poor sites), this correlation may cause biased ...
Lappi, J., Malinen, J.
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Stand density index in uneven-aged ponderosa pine stands

Canadian Journal of Forest Research, 2003
Stand density index (SDI) was developed to quantify relative stand density in even-aged stands. Application of SDI in uneven-aged stands has been described mathematically but not justified biologically. Diameter-class trends in SDI and sapwood area across 14 uneven-aged ponderosa pine (Pinus ponderosa Dougl. ex P. & C.
C W Woodall, C E Fiedler, K S Milner
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Whole-Stand Models for Even-Aged Stands

2012
In the whole-stand approach, quantities such as volume, basal area and/or number of trees per unit area are forecast. The input or predictor variables for whole-stand models are typically age, site index, and stand density. Approaches for ensuring analytic compatibility and numeric consistency between growth and yield estimates are discussed, and a ...
Harold E. Burkhart, Margarida Tomé
openaire   +1 more source

Frost Seeding into Aging Alfalfa Stands

Agronomy Journal, 2001
Little is known about the potential to frost‐seed cool‐season pasture species into mature alfalfa (Medicago sativa L.). Experiments were conducted in 1995 and 1996 near Arlington, WI (four sites), and Lancaster, WI (three sites), to evaluate the establishment and response to seeding rates of five cool‐season grasses and red clover (Trifolium pratense L.
Daniel J. Undersander, David C. West, Michael D. Casler   +2 more
openaire   +1 more source

Physiological changes during prolonged standing and walking considering age, gender and standing work experience

Ergonomics, 2020
Occupational standing is associated with musculoskeletal and venous disorders. The aim was to investigate whether lower leg oedema and muscle fatigue development differ between standing and walking and whether age, gender and standing work habituation are factors to consider.
Rudolf Wall, Gabriela Garcia, Thomas Läubli, Robert Seibt, Monika A. Rieger, Bernard Martin, Benjamin Steinhilber   +6 more
openaire   +2 more sources

Estimating Tree Ages in Uneven-Aged Hardwood Stands

Southern Journal of Applied Forestry, 1989
Abstract Two groups of upland hard-wood trees from the same general area were studied by 44 volunteer observers to determine the ability of the observers to visually estimate tree ages. The error of estimate for tree ages varied by the professional category of the observer, and all categoriesof observer improved with training.
openaire   +1 more source

Forest−stand survival in different age classes

2022
Sylwan 166 (7): 415 ...
Kanabus, Radosław, Miścicki, Stanisław   +1 more
openaire   +1 more source

Prediction of stand attributes of even-aged teak stands using multilevel models

Forest Ecology and Management, 2006
Abstract Hierarchical models were utilized to derive localizable equations for predicting crop diameter, crop height and crop volume in the case of even-aged teak stands. The models considered both random and systematic variation in parameter values over different plantations and regions.
C. Sunanda, K. Jayaraman
openaire   +1 more source

Financial Maturity for Even-Aged and All-Aged Stands

Forest Science, 1983
Abstract The Bentley and Teeguarden even-aged general present net worth model is further generalized to accommodate all-aged stands. The relationship to Chang's forest value, for all-aged stands, is described. Forest Sci. 29:833-836.
openaire   +1 more source