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Results 101 to 110 of about 972,759 (203)

Mineralogy and mineral chemistry of rare-metal pegmatites at Abu Rusheid granitic gneisses, South Eastern Desert, Egypt

Geologija, 2011
The Abu Rushied area, situated in the South Eastern Desert of Egypt is a distinctive occurrence of economically important rare-metal mineralization where the host rocks are represented by granitic gneisses.
Mohamed Fahmy Raslan, Mohamed A. Ali
doaj

Superchondritic Nb/Ta and Zr/Hf ratios in peridotites and eclogites of the subcontinental lithospheric mantle: data from mantle xenoliths

, 2019
The analysis of author’s and literary data on concentrations of Nb, Ta, Zr and Hf and on Nb/ Ta and Zr/Hf relations in eclogite and peridotite xenoliths from a subcontinental lithospheric mantle (SCLM) beneath Pcm cratons allowed us to establish the ...
Nikitina, Larisa P., Babushkina, Miriam S. +1 more
core +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos +6 more
wiley +1 more source

Отримання волокон високоентропійного бориду (Ti, Zr, Hf, Nb, Ta)B2 з використанням зонної плавки [PDF]

У даній роботі представлено теоретичний огляд та технологічні аспекти отримання високоентропійного бориду після хімічного травлення, спрямованого на видалення матриці з композиційного сплаву системи LaB₆(Ti, Zr, Hf, Nb, Ta)B₂, синтезованого методом ...
Якименко,Роман Олександрович
core +1 more source

Structure and mechanical properties of (Zr,Nb)N, (Zr,Hf)N and (Zr,Nb,Hf)N coatings

The paper investigates the structure and mechanical properties of (Zr, Nb)N, (Zr, Hf)N and (Zr, Nb, Hf)N vacuum arc deposited coatings on the Ti-6Al-4V titanium substrate. The coatings are a single-phase ZrN-based solid solution.
Rusalsky, D.P. +10 more
core +1 more source

Managing and visualising geochemical data for tephra correlation with the IntChron Integration Tool

Journal of Quaternary Science, EarlyView.
ABSTRACT There is now a wealth of glass‐shard geochemical data for volcanic ash (tephra) layers from a wide range of volcanoes and eruptions, providing invaluable datasets for tephrochronology. However, compilation of published data to assess tephra correlations leads to large files and requires careful management.
Victoria C. Smith +5 more
wiley +1 more source

Corrosion Behavior of Commercial FeCrAl and TiAl Alloys in Molten Pb With 2E‐7 wt% Oxygen at 600°C and 700°C

Materials and Corrosion, EarlyView.
Excellent corrosion resistance of commercial Al‐containing materials is shown for exposures to liquid lead (Pb) at 600°C. However, oxide scale failure occurs at 700°C. The formed oxide scales and their failure mechanisms are explored. ABSTRACT Liquid lead (Pb) is an attractive heat transfer fluid for advanced thermal energy storage (TES) systems.
Renate Fetzer +4 more
wiley +1 more source

A Critical Review on Nitrogen Control in the Scrap‐Based Electric Arc Furnace Steelmaking Route to Produce Low‐Nitrogen Steels

steel research international, EarlyView.
In primary electric arc furnace (EAF) steelmaking, carbon boiling removes nitrogen from liquid steel and sustains slag foaming. In 100% scrap‐ or hydrogen direct reduced iron (HDRI)‐based EAF steelmaking, carbon boiling is absent; therefore, carbonaceous material and oxygen injection into the slag is needed to maintain foaming and avoid nitrogen ...
Zushu Li +3 more
wiley +1 more source

Patient‐reported outcomes, postoperative pain and pain relief after day‐case surgery (POPPY): acute pain and recovery during the first 7 days

Anaesthesia, EarlyView.
Summary Introduction The majority of surgical cases in the UK occur in a day‐case setting. Published short‐term follow‐up studies after day‐case surgery are lacking and patterns of recovery including pain and patient reported outcome measures, are largely unknown. Methods Data from the Patient‐reported Outcomes, Postoperative Pain and pain relief after
Matthew Everson +2177 more
wiley +1 more source

Effect of intensive care unit sedation strategy on patient‐reported experience: secondary mediation analysis of the A2B randomised controlled trial

Anaesthesia, EarlyView.
Summary Introduction The optimal ICU sedation strategy to improve patient‐reported experience is unknown. In a planned secondary analysis of the A2B randomised trial, we evaluated the effect of sedation strategy (dexmedetomidine, clonidine or propofol) on recalled patient experience at 90 days post‐randomisation.
John A. Masterson +657 more
wiley +1 more source

mechanical properties
mechanics of materials
high-entropy alloys

high-entropy ceramics
materials of engineering and construction
thermal conductivity

first-principles calculations
oxidation