Results 111 to 120 of about 47,686 (243)
STRONTIUM ISOTOPE SYSTEMATICS AND GEOCHEMISTRY OF COAL UTILIZATION BY-PRODUCTS [PDF]
, 2007 Coal combustion for energy generation creates large quantities of solid coal utilization by-products (CUB), including fly ash, bottom ash, and flue gas desulfurization products. These materials are either used in environmental and industrial applications
Spivak-Birndorf, Lev
core +1 more source
Arbuscular Mycorrhizal Fungi Mitigate Drought‐Enhanced Herbivore Performance in Maize
Plant, Cell &Environment, EarlyView.ABSTRACT Drought events are becoming increasingly frequent and intense, posing major challenges to crop productivity. Beyond direct water stress, drought can indirectly affect plants by enhancing herbivore performance. While arbuscular mycorrhizal fungi (AMF) have been proposed to alleviate drought stress and to enhance plant resistance to herbivory ...
Sheharyar Ahmed Khan +7 more
wiley +1 more source
How Plants May Maintain Protein Homeostasis Under Rising Atmospheric CO2
Plant, Cell &Environment, EarlyView.ABSTRACT Vascular plants may employ several physiological mechanisms to stabilize their protein contents as atmospheric CO2 concentrations change over a day, year, decade, or century. One mechanism is that plants may rely more on soil ammonium as their nitrogen source when CO2 increases.
Arnold J. Bloom +2 more
wiley +1 more source
Examining Long-Term Global Climate Change on the Web [PDF]
This article describes an activity in which students use web-based resources to investigate global climate change. The investigation takes the form of a computer activity in which they collect data from the internet on temperature, concentrations of ...
Jacqueline Huntoon, Robert Ridky
core
Macronutrient composition in pollen affects development and survival in wild bees
Physiological Entomology, EarlyView.Small carpenter bees (Ceratina calcarata) were reared on diets formulated with black poplar and dandelion pollen, while closely monitoring developmental metrics, lipid content and survival. Macronutrient analyses on both pollen types revealed dandelion pollen contained lower levels of protein, essential amino acids and several fatty acids, which ...
Khara W. Stephen, Sandra M. Rehan
wiley +1 more source
Preliminary testing of a prototype portable X-ray fluorescence spectrometer [PDF]
A portable X-ray fluorescence spectrometer for use as an analyzer in mineral resource investigative work was built and tested. The prototype battery powered spectrometer, measuring 11 by 12 by 5 inches and weighing only about 15 pounds, was designed ...
Anderson, N. B. +2 more
core +3 more sources
Sedimentology, EarlyView.ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder +2 more
wiley +1 more source
Long‐Term Storage of Meteoric Water in the Variscan Basement: Stable Isotope Constraints (δD–δ18O)
Terra Nova, EarlyView.ABSTRACT F‐Ba‐Pb‐Zn (±Ag) deposits near the unconformity between the Armorican and Aquitaine basins formed by mixing surface waters and brines with fluid ascending from the basement. To better constrain the source of this fluid and the conditions of mixing, we analyzed the hydrogen (δDwater) and oxygen (δ18Owater) isotopic composition of water trapped ...
Loïc Bouat +2 more
wiley +1 more source
Charge-to-mass dispersion methods for abrasion-ablation fragmentation models [PDF]
Methods to describe the charge-to-mass dispersion distributions of projectile prefragments are presented and used to determine individual isotope cross-sections or various elements produced in the fragmentation of relativistic argon nuclei by carbon ...
Norbury, J. W., Townsend, L. W.
core +1 more source
Multidisciplinary research in the space sciences [PDF]
Research activities were carried out in the following areas during this reporting period: (1) astrophysics; (2) climate and atmospheric modeling; and (3) climate applications of earth observations & geological studies. An ultra-low-noise 115 GHz receiver
Broecker, W. S., Flynn, G. W.
core +1 more source