Results 81 to 90 of about 17,367 (238)
Environmental Toxicology, EarlyView.ABSTRACT This study assessed the ecotoxicological effects of treated sewage on the freshwater planarian Girardia tigrina, integrating biochemical, energetic, and behavioral biomarkers. Planarians were exposed for 48 h to different concentrations of treated sewage (12.5%, 25%, 50%, and 100%) and compared to controls using commercial water and water from
Renata M. P. Freitas +3 more
wiley +1 more source
Surface characterization of selected LDEF tray clamps [PDF]
The surface characterization of chromic acid anodized 6061-T6 aluminum alloy tray clamps has shown differences in surface chemistry depending upon the position on the Long Duration Exposure Facility (LDEF).
Cromer, T. F. +4 more
core +1 more source
Integration of Micro‐CT and XRF Mapping for Multimodal 3D Analysis of Polychrome Wooden Artifacts
X-Ray Spectrometry, EarlyView.ABSTRACT Over the past 5 years, computer applications have become crucial to archeological research. Since the 1990s, the focus has transitioned from data management tools to the development of virtual models. Recently, digital documentation of cultural heritage has gained considerable focus, with 3D modeling of objects.
Josiane E. Cavalcante +10 more
wiley +1 more source
Internally coated air-cooled gas turbine blading [PDF]
Ten candidate modified nickel-aluminide coatings were developed using the slip pack process. These coatings contain additives such as silicon, chromium and columbium in a nickel-aluminum coating matrix with directionally solidified MAR-M200 + Hf as the ...
Hsu, L., Stetson, A. R., Stevens, W. G.
core +1 more source
Between the Indian Ocean and the Gulf: Ceramics From Ḥattā Oasis in the Emirate of Dubai
Arabian Archaeology and Epigraphy, EarlyView.ABSTRACT This study presents the ceramic finds from archaeological investigations conducted in 2024 at two settlements: ‘Islamic Village' and Suhaila 2, one of a number of mountain villages of the Late Islamic period within the Ḥattā Oasis: a high‐altitude exclave in the Emirate of Dubai. The sites are located on the northeastern slopes of Jabal Qallāt
Seth M. N. Priestman +3 more
wiley +1 more source
Purification Apparatuses with New Types of Regular Packings for Chromium Salts Production
Chemical Engineering Transactions, 2015 The new design of gas-dust purification apparatuses with regular mobile packings has been proposed. The submitted constructions furnished with packing units in the form of plates, spheres, tubes, etc.
A. Volnenko +3 more
doaj +1 more source
Ultraviolet radiation effects [PDF]
Solar ultraviolet testing was not developed which will provide highly accelerated (20 to 50X) exposures that correlate to flight test data. Additional studies are required to develop an exposure methodology which will assure that accelerated testing can ...
Slemp, Wayne S.
core +1 more source
Potentials of castor seed meal (Ricinus communis L.) as feed ingredient for Oreochromis niloticus [PDF]
, 2005 The potentials of castor seed (Ricinus communis) meal as feed ingredient for Oreochromis niloticus was determined by using boiled seeds to prepare five diets which were fed to the fish species.
Abdullahi, S.A. +3 more
core
Variable Sr Diffusion and Implications for Rb–Sr Biotite Geochronology
Journal of Metamorphic Geology, EarlyView.ABSTRACT The rubidium–strontium (Rb–Sr) system has a long pedigree as a geochronological tool that relies on the application of an isochron approach. In particular, biotite contains strongly radiogenic Rb–Sr isotopes, and thus can yield meaningful crystallisation or cooling ages via this approach. However, the response of the Rb–Sr system in biotite to
Riley Rohrer +4 more
wiley +1 more source
LDEF thermal control coatings post-flight analysis [PDF]
The NASA Long Duration Exposure Facility (LDEF) provided a unique flight opportunity for conducting experiments in space and return of these experiments to Earth for laboratory evaluation.
Slemp, Wayne S., Young, Philip R.
core +1 more source