Results 81 to 90 of about 404,095 (346)

The parable of the dying birch tree [PDF]

, 2007
edited by T ...
Bestvater, Ron
core   +1 more source

A twofold development and demise of pine stands in the Netherlands during the Allerød interstadial: two hypotheses to explain a link to climate change recorded in Greenland ice

Journal of Quaternary Science, EarlyView.
ABSTRACT The second half of the Allerød interstadial in the Netherlands is characterised by pine forest. Excavated trunks of 165 pine trees at Leusden‐Den Treek in the central Netherlands (LETR16) were dated by dendrochronology and radiocarbon. Two chronologically separated pine forest phases occurred during relatively warm periods as recorded in ...
Wim Z. Hoek, Jos Bazelmans, Otto Brinkkemper, Petra Doeve, Bas van Geel   +4 more
wiley   +1 more source

Natural regeneration of broadleaved tree species in southern Sweden [PDF]

, 2001
The objective of the present thesis was to examine the effects of silvicultural treatments and seed dispersal from surrounding stands on the establishment of natural regeneration of broadleaved tree species in southern Sweden.
Karlsson, Matts
core  

"Two tribes": Handaxe shape variation shows distinct regional cultural groups in southeastern Britain between 424 000 and 374 000 BP

Journal of Quaternary Science, EarlyView.
ABSTRACT This paper examines regional and chronological variations in Acheulean handaxe morphology during Marine Isotope Stage 11 (c. 425–365 ka BP) in Britain. Using a data set of 737 handaxes from 13 securely dated sites in East Anglia and the Thames Valley, we apply three‐dimensional geometric morphometric analysis to examine morphological ...
Mark White, Frederick Foulds, Aaron Rawlinson, Ceri Shipton, Rob Davis, Nick Ashton   +5 more
wiley   +1 more source

Implementation of K-Means, Hierarchical, and BIRCH Clustering Algorithms to Determine Marketing Targets for Vape Sales in Indonesia

Journal of Applied Informatics and Computing
In today's era, smoking is a common thing in everyday life. Along with the development of the times, an innovation emerged, namely the electric cigarette or vape. Electric cigarettes or vapes use electricity to produce vapor.
Justin Laurenso, Danny Jiustian, Felix Fernando, Vartin Suhandi, Theresia Herlina Rochadiani   +4 more
doaj   +1 more source

Two centuries-long dendroclimatic reconstruction based on Low Arctic Betula pubescens from Tromsø Region, Northern Norway

Polish Polar Research, 2016
This study presents the results of dendrochronological and dendroclimatological research of Betula pubescens from four sites in northern Norway (Kvaløya Island, Tromsøya Island and Storelva Valley), which provided a 193-year chronology.
Opała Magdalena, Migała Krzysztof, Owczarek Piotr   +2 more
doaj   +1 more source

Special L-values of Drinfeld modules

, 2011
We state and prove a formula for a certain value of the Goss L-function of a Drinfeld module. This gives characteristic-p-valued function field analogues of the class number formula and of the Birch and Swinnerton-Dyer conjecture.
Taelman, Lenny
core   +1 more source

Nutrition Status of Trees on Spoil Heaps After Coal Mining Can Be Inferred From Seasonal Dynamics of Foliar Nutrient Concentrations

Land Degradation &Development, EarlyView.
ABSTRACT A stable vegetation cover on given habitat conditions can be one of the possible requirements for post‐mining sites, as it can prevent erosion and dustiness of these anthropogenic surfaces and bring several practical future benefits, such as biomass production and microclimate improvement.
Tomáš Matys Grygar, Michaela Königová, Slavomír Adamec, Gabriela Bílková, Petr Vorm, Věra Hýlová   +5 more
wiley   +1 more source

High-Titer Methane from Organosolv-Pretreated Spruce and Birch

Energies, 2017
The negative impact of fossil fuels and the increased demand for renewable energy sources has led to the use of novel raw material sources. Lignocellulosic biomass could serve as a possible raw material for anaerobic digestion and production of biogas ...
Leonidas Matsakas, Christos Nitsos, Dimitrij Vörös, Ulrika Rova, Paul Christakopoulos   +4 more
doaj   +1 more source

Supplementary material to "Subpollen particles (SPP) of birch as carriers of ice nucleating macromolecules"

, 2021
Julia Burkart, Jürgen Gratzl, Teresa M. Seifried, Paul Bieber, Hinrich Grothe   +4 more
openalex   +1 more source