Results 131 to 140 of about 381,696 (284)

A century of structures: historical fidelity and computational fitness in the Inorganic Crystal Structure Database (ICSD)

Acta Crystallographica Section B, EarlyView.
Of 464 Inorganic Crystal Structure Database (ICSD) structures from 1913 to 1929, the vast majority are structurally sound, but a small number carry genuine topological errors whose corrective information exists in the database yet is invisible to automated queries.
Peter Gross, Nik Reeves-McLaren
wiley   +1 more source

Probing the solar system's prenatal history:insights from coordinated isotopic, microstructural and chemical investigations of presolar silicate and oxide stardust grains

, 2019
Insights from coordinated isotopic, microstructural and chemical investigations of presolar silicate and oxide stardust grains. Primitive extraterrestrial materials like carbonaceous chondrites, interplanetary dust particles and cometary samples contain ...
Sanghani, Manish Navinchandra
core   +1 more source

Probing Dust Composition in Distant Galaxies with JWST Mid-IR Spectroscopy of Quasars with Foreground 2175 Å Absorbers. II. Measurements of Grain Composition and Extinction Properties

The Astrophysical Journal
We present results from a mini-survey of dust spectral features arising in galaxies at redshifts 0.5 
Viacheslav V. Klimenko, Varsha P. Kulkarni, Monique C. Aller   +2 more
doaj   +1 more source

Assessing Soil Quality, Wheat Crop Yield, and Water Productivity under Condition of Deficit Irrigation

Plants
Wheat is one of the most important cereal crops in Egypt and all over the world. Its productivity is adversely affected by drought due to deficient irrigation to provide nutrients required for plant growth.
Mohamed Emran, Omar M. Ibrahim, Asal M. Wali, Khaled M. Darwish, Rasha M. Badr Eldin, Maryam M. Alomran, Amira M. El-Tahan   +6 more
doaj   +1 more source

Economic potential for improving the nutritional characteristics of feed grains [PDF]

A comprehensive set of potential new feed grains for Australia was evaluated to help establish the options with the highest priorities for research. The cost-reducing impacts of the different options were analysed using a linear-programming model that ...
Singh, Inder Pal, Singh, Rajinder Pal, Brennan, John P.   +2 more
core  

Learning Across the Divide: Understanding Knowledge Sharing Through Petrographic Analysis on Ceramics From the Rhine‐Meuse Delta During the Middle to Late Neolithic Transition (3400–2200 bce)

Archaeometry, EarlyView.
ABSTRACT Vlaardingen (VL) communities on the Dutch West coast (3400–2200 bce) are part of a unique, long‐term continuity in the European Neolithic. Despite large‐scale changes in European populations during the Neolithic, the genomic diversity and cultural practices of VL communities can be retraced to the Mesolithic.
Jisca de Bruin, Erik Kroon, Lasse van den Dikkenberg, Dennis Braekmans   +3 more
wiley   +1 more source

Multichannel wavelength conversion of 40 Gbit/s NRZ DPSK signals in a highly nonlinear dispersion flattened lead silicate fibre

We experimentally demonstrate the wavelength conversion of three wavelength multiplexed 40 Gbit/s Differential Phase Shift Keyed (DPSK) signals in a 2.2m length of highly nonlinear, dispersion tailored W-type lead-silicate optical ...
Camerlingo, Angela, Horak, P., Parmigiani, F., Petropoulos, P., Richardson, D.J., Poletti, F., Feng, X., Loh, Wei H.   +7 more
core   +1 more source

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
wiley   +1 more source

Dust Collisions in Protoplanetary Disks: Atomic Simulations of the Surface Free Energy

The Astronomical Journal
Coagulation of dust particles in protoplanetary disks is the first step on the journey to the formation of planets. The surface free energy (SFE) of the dust particles determines the effectiveness of particles sticking to each other after collision, as ...
L. S. Morrissey, D. S. Ebel, L. E. J. Eriksson, A. Georgiou, Z. Huang, M.-M. Mac Low, T. Pfeil   +6 more
doaj   +1 more source

Wavelength conversion in a short length of a solid lead-silicate fibre

, 2010
We experimentally demonstrate a four-wave-mixing-based wavelength conversion scheme at 1.55 µm using a 1.1-m length of highly nonlinear, dispersion tailored W-type lead–silicate optical ...
Camerlingo, A., Horak, P., Parmigiani, F., Petropoulos, P., Richardson, D.J., Poletti, F., Loh, W.H., Feng, X., David J. Richardson, Xian Feng, Francesca Parmigiani, Periklis Petropoulos, Angela Camerlingo, Peter Horak, Wei H. Loh, Francesco Poletti   +15 more
core   +1 more source