Results 81 to 90 of about 182,763 (304)
Skilled Trades Playbook: Dynamic Partnerships for a New Economy [PDF]
, 2013 Many businesses, especially those that rely on skilled trades workers, report difficulty finding qualified individuals to fill open jobs. We believe it's time to meet this training challenge by creating partnerships that provide an opportunity to better ...
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Organellar carbon metabolism is co-ordinated with distinct developmental phases of secondary xylem [PDF]
, 2019 Subcellular compartmentation of plant biosynthetic pathways in the mitochondria and plastids requires coordinated regulation of nuclear encoded genes, and the role of these genes has been largely ignored by wood researchers. In this study, we constructed
Fierro Gutierrez, Ana Carolina Elisa +4 more
core +2 more sources
Utilization of Waste Materials Using the Müller–Kühne Process—A Life Cycle Inventory Study
Chemie Ingenieur Technik, EarlyView.This study presents a Life Cycle Inventory of the Müller–Kühne process (MKP), which converts gypsum waste into sulfuric acid and cement clinker. The MKP outperforms conventional cement production regarding material yield, though its specific energy demand is higher. Consequently, potentials for circular gypsum waste utilization are discussed.
Leon Kassner +4 more
wiley +1 more source
Journal of Forest SciencePioneer tree species in the Czech Republic include birch, alder and aspen. From an economic point of view, birch seems to be the most promising. Greater use of timber from pioneer tree species in higher value-added products is currently limited by the ...
Roman Dudík +4 more
doaj +1 more source
Snowpack properties vary in response to burn severity gradients in montane forests
Environmental Research Letters, 2019 Wildfires are altering ecosystems globally as they change in frequency, size, and severity. As wildfires change vegetation structure, they also alter moisture inputs and energy fluxes which influence snowpack and hydrology.
Jordan Maxwell, Samuel B St Clair
doaj +1 more source
U.S. Microfinance: Small Loans, Big Results [PDF]
, 2013 Accion's 2012 microTracker study highlights the critical role that U.S. small businesses play in building our economy. Conducted in partnership with the Aspen Institute and California microlender Opportunity Fund, the study takes a rigorous look at ...
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Toxic Phenolic Glycosides From \u3ci\u3ePopulus:\u3c/i\u3e Physiological Adaptations of the Western North American Tiger Swallowtail Butterfly, \u3ci\u3ePapilio Rutulus\u3c/i\u3e (Lepidoptera: Papilionidae) [PDF]
, 2017 The phenolic glycosides tremulacin and salicortin found in quaking aspen, Populus tremuloides, and other members of the Salicaceae, are known to be toxic to larvae of the Eastern tiger swallowtail butterfly, Papilio glaucus, but not to the Canadian tiger
Lindroth, Richard L +2 more
core +2 more sources
In Situ Methanation on Mars: A Process Concept Study on the Impact of H2/CO2 and Recycle Ratio
Chemie Ingenieur Technik, EarlyView.The rocket propellant methane can be produced on Mars by in situ resource utilization. The H2/CO2 ratio is decisive, and excess H2 is favored for providing sufficient propellant purity. The operation mode—with or without recycling of unreacted reactants—depends on the resource availability of the selected landing site. Abstract For return missions from
Franz Braun +4 more
wiley +1 more source
Next-Generation Media: The Global Shift [PDF]
, 2007 For over a decade the Aspen Institute Communications and Society Program has convened its CEO-level Forum on Communications and Society (FOCAS) to address specific issues relating to the impact of communications media on societal institutions and values.
Charles M. Firestone +2 more
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Integration of High‐p, Low‐T CO2 Electrolysis with Pressure Swing Adsorption Purification
Chemie Ingenieur Technik, EarlyView.We evaluate a high‐p low‐T CO2 electrolysis (LTCE) cell with a pressure swing adsorption (PSA) to compare cascade vs. recycle operation. Although a cascade yields high CO selectivity but limited yield, a full recycle achieves near‐quantitative CO production, highlighting gas recycling as essential for LTCE/PSA systems.
Martin Peters +5 more
wiley +1 more source