Results 31 to 40 of about 61,888 (271)
Heat Pump Efficiencies Simulated with Aspen HYSYS and Aspen Plus [PDF]
Linköping Electronic Conference Proceedings, 2015 The efficiency of a heat pump system has been calculated for varying temperature conditions, refrigerants, simulation programs and thermodynamic models. Evaluated components are ammonia, the chlorofluorocarbons R-11, R-12, R-22 and propane. The equations of state Peng-Robinson (PR) and SoaveRedlich-Kwong (SRK) and the activity model NonRandom-Two ...
Øi, Lars Erik, Tirados, Irene Yuste
openaire +2 more sources
Tremblings, February 2023 [PDF]
, 2023 It\u27s cold out there! Frost: An overlooked aspen disturbance Joseph D. Birch If you have ever decried the arrival of a frost in May or June, you are not alone. As it turns out, late-spring frost is also a problem for aspen.
Western Aspen Alliance
core +1 more source
Controls of Initial Wood Decomposition on and in Forest Soils Using Standard Material
Frontiers in Forests and Global Change, 2022 Forest ecosystems sequester approximately half of the world’s organic carbon (C), most of it in the soil. The amount of soil C stored depends on the input and decomposition rate of soil organic matter (OM), which is controlled by the abundance and ...
Anita C. Risch +12 more
doaj +1 more source
Tremblings, February 2017 [PDF]
, 2017 How to maintain extensive stands of aspen in managed boreal forests Victor Lieffers Historically, Alberta had some of the largest expanses of aspen stands anywhere in North America.
Western Aspen Alliance
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Linking Past and Present: John Dewey and Assessment for Learning
Journal of Teaching and Learning, 2012 : The purpose of this paper is to explore the principles of Assessment for Learning (AFL) in light of John Dewey’s writing about the purpose and possibility of education.
Sharen Kucey, Jim Parsons
doaj +1 more source
Metabolite signature during short-day induced growth cessation in Populus
Frontiers in Plant Science, 2011 The photoperiod is an important environmental signal for plants, and influences a wide range of physiological processes. For woody species in northern latitudes, cessation of growth is induced by short photoperiods.
Miyako eKusano +6 more
doaj +1 more source
, 2010 Tracking contemporary aspen sciences: a critical endeavor for land managers Ron Ryel We know everything there is to know about aspen has been a long-held and common opinion in the western aspen world.
Western Aspen Alliance
core +1 more source
Youth, 2023 This paper describes how a collective of Latine youth and adult allies used art-based approaches in a participatory action research project to better understand the ways in which young U.S. Latines make meaning of wellbeing. In this study, we interviewed
Desiree Armas +4 more
doaj +1 more source
Climate information use in transportation planning: a survey of Metropolitan Planning Organizations
Climate Risk ManagementClimate change and its potential to impact transportation systems poses urgent challenges for sustainability and societal well-being, emphasizing a need to plan to reduce transportation infrastructure’s vulnerability to impacts such as sea level rise ...
Kelli M. Archie +5 more
doaj +1 more source
New felling ages for the forests of the Republic of Belarus [PDF]
Сибирский лесной журнал, 2019 Current ages of felling in the forests of Belarus were established in 2001. In production forests they make up 81 years and more for coniferous stands, 101 years or more for hardwood, 61 years or more for birch trees, 51 years and more for black alder –,
V. F. Baginskiy +2 more
doaj +1 more source