Results 191 to 200 of about 6,573 (250)

Ceramic ecology in an Islamic capital: changes in the production and consumption of pottery in Palermo

Early Medieval Europe, EarlyView.
Palermo became the new capital of Sicily after the Aghlabid conquest in 831. The transformation of the city into a capital took many forms, including the production and consumption of pottery. The perspective from ceramic evidence shows that Palermo underwent faster and deeper processes of Islamization than other urban and rural contexts across the ...
Viva Sacco
wiley   +1 more source

Material characterization of stone surfaces in the inner chambers of the Khufu (Cheops) Pyramid: towards informed conservation strategies. [PDF]

Sci Rep
Sessa C, Deraz R, Popovych O, Tayoubi M, Elkarmoty M, Helal H, Grosse CU.   +6 more
europepmc   +1 more source

Comparison of different X‐ray‐based scanning electron microscopy methods to detect sub‐nanometre ultra‐thin InAs layers deposited on top of GaAs

Journal of Microscopy, EarlyView.
Abstract We compare three different methods of X‐ray analysis in a scanning electron microscope (SEM): energy‐dispersive X‐ray spectroscopy (EDX), wavelength‐dispersive X‐ray spectroscopy (WDX) and micro X‐ray fluorescence (μXRF). These methods are all applied to the same gallium arsenide (GaAs) wafer with a 0.8 nm layer of indium arsenide (InAs) on ...
Thomas Walther, Stuart Creasey‐Gray, Stephan Boehm, Heath Young, Yang Yang   +4 more
wiley   +1 more source

Multi-Technique Analysis and Research on the Deterioration Features of Cave 29 in the Yungang Grottoes. [PDF]

Materials (Basel)
Zhang Y, Zhang T, Dong L.
europepmc   +1 more source

Effects of high‐speed sintering on the translucency and color of dental zirconia with different shades and yttria contents

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluated the effects of high‐speed sintering on the translucency and color of various yttria‐stabilized zirconia (YSZ) compositions and identified factors influencing these properties to improve clinical predictability. Materials and Methods A total of 144 disc‐shaped specimens fabricated from 3YSZ, 4YSZ, and 5YSZ pucks in ...
Zidu Zeng, Nupur Patel, Yijing Su, Yu Zhang   +3 more
wiley   +1 more source

Study on the Occurrence Morphology and Combustion Characteristics of Carbon and Ash in Coal Gasification Coarse Slag with Different Granularity. [PDF]

ACS Omega
Zhao G, Mo W, Zhang Y, Li J, You S, Yang Z, Guo H, He G, Feng J, Ma Y, Huang H.   +10 more
europepmc   +1 more source

Estimating past fluid pH and evaporative conditions in Gale crater using terrestrial analog samples from Death Valley, CA

Meteoritics &Planetary Science, EarlyView.
Abstract Boron and lithium have been observed in Ca‐sulfate veins of Gale crater. These elements are highly water mobile and can inform us regarding the aqueous processes that may have taken place in Gale crater. However, the analysis of B in Gale crater is limited to low‐Fe rocks and minerals due to spectral interference of Fe with B in ChemCam data ...
D. Das, P. J. Gasda, K. Berlo, R. J. Leveille, M. A. Nellessen, L. Crossey, E. Peterson, R. Beal, A. L. Reyes‐Newell, S. M. Clegg, N. L. Lanza, O. Gasnault   +11 more
wiley   +1 more source

Gold and Nickel Release From Gold-Plated Earrings Under Cysteine-Modified Artificial Sweat Conditions. [PDF]

Contact Dermatitis
Jensen MB, Ahlström MG, Jellesen MS, Nikpour S, Pütz RD, Hedberg Y, Johansen JD.   +6 more
europepmc   +1 more source

Genetic Analysis of East African Sorghum Genotypes for Yield Components and Iron and Zinc Composition

Plant Breeding, EarlyView.
ABSTRACT Sorghum [Sorghum bicolor (L.) Moench] is a vital cereal crop in dry regions worldwide. However, in sub‐Saharan Africa (SSA), grain yields from currently grown varieties remain low (< 1 ton/ha) and exhibit variable nutrient composition. Therefore, the objective of this study was to undertake a genetic analysis of selected East African‐adapted ...
Charles Andiku, Hussein Shimelis, Mohammed Riyazaddin, Jacob Mashilo   +3 more
wiley   +1 more source

Synthesis, characterisation and electrochemical behaviour of calcium carbonate nanoparticles derived from automobile oxy-acetylene gas welding waste. [PDF]

Discov Nano
Eddy NO, Nweze S, Eze IS, Garg R, Taziwa R, Watandost H.   +5 more
europepmc   +1 more source