Results 31 to 40 of about 8,199 (276)

Experimental research into the effect of some operation factors and rock properties on the rate of penetration [PDF]

open access: yes, 2020
Purpose. The purpose of this research is to investigate the effect of weight on bit (WOB), rotary speed (RPM), and some rock properties on the rate of penetration (ROP). Methods.
Ali, Mahrous A.M.   +4 more
core   +1 more source

The growth of small-leaved lime (Tilia cordata Mill.) clones in a seed orchard in the Susz Forest District

open access: yesForest Research Papers, 2011
Wzrost szczepów lipy drobnolistnej (Tilia cordata Mill.) na plantacji nasiennej w Nadleśnictwie ...
Agata Ludwikowska   +2 more
openaire   +1 more source

Cost-effective method for the estimation of tree crown density in urban settings using a smartphone

open access: yesBlue-Green Systems, 2023
Urban trees provide vital ecosystem services, and assessing their health is crucial for managing urban infrastructure. Traditional methods of assessing crown density, an indicator of tree vitality, involve horizontal perspectives of unobstructed canopies.
Ivo Sippel, Lucie Moeller, Jan Friesen
doaj   +1 more source

Mite species (Acari: Mesostigmata) new and rare to Polish fauna, inhabiting the soil of broadleaved forests dominated by small-leaved lime (Tilia cordata Mill.) in Kwidzyn Forest District (N Poland) [PDF]

open access: yesBiological Letters, 2014
Abstract During a two-year study on mites of the order Mesostigmata in broadleaved forest stands dominated by small-leaved lime (Tilia cordata Mill.), 117 mite species were identified. Among them, 3 had been so far rarely recorded in Poland (Haemogamasus nidi, Stylochirus rovenensis and Eugamasus crassitarsis) and 2 were classified as ...
KATARZYNA FALEŃCZYK-KOZIRÓG   +2 more
openaire   +2 more sources

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

open access: yesChemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

Bryophytes of Mordovia State Nature Reserve (European Russia) [PDF]

open access: yes, 2017
The present study compiles the results of bryophyte species inventories made at the Mordovia State Nature Reserve from 2014 till 2016. The reserve is located near southern limit of deciduous-coniferous forest subzone.
Czernyadjeva, Irina V.   +2 more
core   +2 more sources

The importance of city trees for reducing net rainfall: comparing measurements and simulations [PDF]

open access: yesHydrology and Earth System Sciences, 2019
An in situ tree interception experiment was conducted to determine the hydrological impact of a solitary standing Norway maple and a small-leaved lime in an urban environment.
V. Smets   +5 more
doaj   +1 more source

Culturally modified trees or wasted timber: Different approaches to marked trees in Poland’s Białowieża Forest [PDF]

open access: yes, 2019
Studies of past forest use traditions are crucial in both understanding the present state of the oldest European forests, and in guiding decisions on future forest conservation and management. Current management of Poland’s Białowieża Forest (BF), one of
Fedotova, Anastasia   +3 more
core   +1 more source

Electron paramagnetic resonance and quantitative color investigations of various vacuum heat treated wood species [PDF]

open access: yesMagnetic Resonance in Solids, 2015
The effect of the heat treatment duration on the electron paramagnetic resonance signal amplitude of free radicals for various wood species was observed.
E.I. Kondratyeva, K.R. Safiullin, I.G. Motygullin, A.V. Klochkov, M.S. Tagirov, V.V. Kuzmin
doaj  

Maintaining the protective function of mountain forests under climate change by the concept of naturalness in tree species composition

open access: yesFrontiers in Forests and Global Change, 2023
In Swiss mountain areas, the protective function of forests is the predominant ecosystem service having high cultural and economic significance. It is assumed that natural forests or close-to-natural forests, i.e., forests being in the equilibrium with ...
Daniel Scherrer   +4 more
doaj   +1 more source

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