Results 31 to 40 of about 14,487 (238)

Designing and implementing a new advanced level biology course. [PDF]

open access: yes, 2003
Salters-Nuffield Advanced Biology is a new advanced level biology course currently being piloted from September 2002 in England with around 1200 students.
Hall, Angela   +4 more
core   +2 more sources

Climate Reconstruction on the Growth of Teak in Umphang Wildlife Sanctuary, Thailand

open access: yesEnvironment and Natural Resources Journal, 2017
Teak is an example of proxy data that can be used to indirectly deduce past climatic conditions. The objective of this study was to investigate the relationship between teak growth and climate data in western Thailand.
Pichit Lumyai, Khwanchai Duangsathaporn
doaj   +1 more source

Efficiency of Biochar and Bio-Fertilizers Derived from Maize Debris as Soil Amendments

open access: yesEnvironment and Natural Resources Journal, 2018
Unsuitable handling of crop residues can result in many environmental problems such as air pollution and soil degradation. In the northern parts of Thailand, such problems are partly caused by the burning of agricultural debris after harvesting.
Kritsadapan Palakit   +5 more
doaj   +1 more source

The assessment of present, past and future climatic variability in the americas from tree-line environments [PDF]

open access: yes, 2001
In this note we introduce one of 14 Collaborative Research Networks (CRN) funded by the Inter-American Institute for Global Change Research. It was established in 1999 and involves 15 principal investigators from 13 institutions in Canada, USA, Mexico ...
Boninsegna, Jose Armando   +1 more
core   +1 more source

Growth trends reveal the forest structure during Roman and Medieval times in Western Europe: a comparison between archaeological and actual oak ring series (Quercus robur and Quercus petraea) [PDF]

open access: yes, 2005
At some point in time, man has influenced nearly all forests in Western Europe. Most of the original forest cover has been converted to arable land and pastures, or has been cut for the supply of firewood and construction timber.
Beeckman, Hans   +2 more
core   +3 more sources

River archaeology – a new tool for historical hydrology [PDF]

open access: yes, 2008
River archaeology is consisting of underwater research of the rivers themselves, and also the archaeology of the valleys/floodplains with special interest in humanenvironmental interactions (reconstructing space, environment, economy and society on ...
Tóth, János Attila
core   +1 more source

Teak Log Coffins in Northwest Thailand: Dated by Dendrochronology and 14Cwiggle Matching

open access: yesApplied Environmental Research, 2015
Log coffins have been discovered in caves and rockshelters in the Pang Ma Pha district, Mae Hong Son province, Northwestern Thailand. Most are made of teak wood. Many researchers have used the 14C method to determine their age.
Nathsuda Pumijumnong, Sineenart Wannasri
doaj   +7 more sources

Analysis of DNA profiles of ash (Fraxinus excelsior L.) to provide evidence of illegal logging [PDF]

open access: yes, 2017
The present work formed part of a research project supported by the General Directorate of State Forests (Grants BLP-333 and BLP-384). We gratefully acknowledge the Forest Guard staff from Śnieżka Forest District for their efficient cooperation.
Borys, Malgorzata   +4 more
core   +2 more sources

Integrating radial growth response of Himalayan cedar to climate change in the mountainous region of Shogran Valley, Pakistan

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca
Himalayan mountainous region is ecologically sensitive to climate change where forest ecosystems face monsoon climate and information is well recorded in tree rings.
Zargham KHAN   +8 more
doaj   +1 more source

Chronology of Central European Impulses in the Volga Forest Region: Fatyanovo and Abashevo Cultures

open access: yesПоволжская археология, 2023
There is a difference in chronology based on radiocarbon dating and historical dates associated with Near Eastern written sources. With the introduction of AMS dating, this gap has become smaller, but has not disappeared.
Grigoriev Stanislav A.
doaj   +1 more source

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