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Toplam kayıt 57, listelenen: 1-10
Cases of science professors' use of nature of science
(Springer, 2009)
Study provides qualitative analysis of data that answers the following research question: how college science faculty teach science and NOS and incorporate aspects of NOS and the history of science into their undergraduate ...
Semiotic representations skills of prospective elementary teachers related to mathematical concepts
(Elsevier, 2009)
The aim of the study is to introduce Duval's Theory of Registers of Semiotic Representations, and with the framework of this theory to analyze how students perceive and apply different usages of the representations for the ...
Generalized height-diameter models for picea orientalis L.
(Triveni Enterprises, 2009)
The purpose of this paper is to compare major models for height estimation of Picea orientalis L trees based on the individual tree diameter and certain other stand variables. The data were collected from 440 trees of pure ...
Preliminary results on the effects of various pre-treatments on seed germination of Juniperus oxycedrus L.
(International Seed Testing Association, 2007)
Seeds of Juniperus oxycedrus L. have seed-coat and embryo dormancy hampering complete, rapid and uniform germination. Twenty treatments including stratification and scarification were conducted to overcome seed dormancy. ...
Effects of gap-size classes on long-term litter decomposition rates of beech, oak and chestnut species at high elevations in northeast Turkey
(Springer, 2008)
Effects of gap-size classes on litter decomposition rates were investigated in a high-elevation forest for 4 years by placing leaf litter of beech (Fagus orientalis Lipsky.), oak (Quercus robur L.), and chestnut (Castanea ...
Effect of visitor activities on surface soil environmental conditions and aboveground herbaceous biomass in Ayder Natural Park
(Wiley-VCH Verlag GmbH, 2009)
The effects of visitor activities on surface soil environmental conditions and above-ground herbaceous biomass in Ayder Natural Park, Turkey, were investigated. Soilproperties and aboveground herbaceous biomass were ...
Diameter at breast height-crown diameter prediction models for picea orientalis
(Academic Journals, 2009)
Seven models for predicting crown diameter using diameter at breast height were tested for Picea orientalis L. (Link.) in Artvin. Data were obtained from 4208 trees measured on 117 temporary sample plots. Sample plots were ...
Effects of land-use management on surface soıl properties, erosion indices and green tea yield in humid Blacksea region
(Parlar Scientific Publications, 2009)
Many basins with forest eco-systems in the north-east of Turkey have been converted to agricultural catchments, to which varying quantities and types of manure have been applied. The objectives of this study were to ...
Seed germination of Cistus creticus L. and Cistus laurifolius L. as influenced by dry-heat, soaking in distilled water and gibberellic acid
(Triveni Enterprises, 2008)
The effects of dry-heat and seed soaking in distilled water or in gibberellic acid on germination performance of Cistus creticusL. and C. laurifolius L. were studied in the present study. Germination percentages of two ...
Antioxidant potentials and rosmarinic acid levels of the methanolic extracts of Salvia verticillata (L.) subsp. verticillata and S. verticillata (L.) subsp. amasiaca (Freyn & Bornm.) Bornm
(Elsevier, 2007)
This study was dcsigned to i:xanıine the in vitro antioxidant activities and rosmarinic acid levels of the methanol extracts of Salvia verticillata subsp. vertici/laıa and S. verticillata subsp. amasiaca . The extracts ...