Results 41 to 50 of about 14,851 (306)

Gold-aluminium alloys [PDF]

open access: yesProceedings of the Royal Society of London, 1900
Abstract The first part of this paper gives the equilibrium curve for the liquid alloys and the various solid bodies that can form in them. The curve is based on the determination of the freezing points of mixtures varying in composition from pure gold to pure aluminium.
Charles Thomas Heycock   +1 more
openaire   +1 more source

White gold alloys: [PDF]

open access: yesGold Bulletin, 2005
A numerical grading system has been established for white gold alloys using the ASTM Yellowness Index D1925, an existing colour quality standard. The Index is calculated from the CIE (International Commission of Illumination) Tri-stimulus values, X, Y and Z, and the scale is linear, so that as the number decreases, the alloy becomes whiter.
Henderson, Steven, Manchanda, Dippal
openaire   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

Estimation of dislocation densities in cold rolled Al-Mg-Cu-Mn alloys by combination of yield strength data, EBSD and strength models

open access: yes, 2005
Al-Mg-Cu-Mn alloys have been developed for the packaging industry, in which large cold-working deformations are normally applied that can produce high dislocation densities.
Zhu, Z., Starink, M.J., Wang, S.C.
core   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

open access: yesAdvanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan   +9 more
wiley   +1 more source

Study of the influence of cobalt in the high formability of the Au-Fe system

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2018
Since ancient times, gold has been used due to its especial properties. Among those properties are the resistance to corrosion (for being noble), its high electrical and thermal conductivity, and also its conspicuous coloration.
Sandra Milena Restrepo-Arcila   +3 more
doaj  

Complications of implantation of aesthetic foreign bodies depending on their chemical composition

open access: yesJournal of Education, Health and Sport, 2020
The study was aimed to assess the frequency of implantation of aesthetic foreign bodies depending on their chemical compositionThere was demonstrated that 49.4% of patients with complications after auricular piercing have jewelry made of gold and silver,
O. V. Bondarenko
doaj   +1 more source

Effect Of Lead-free Solder And Gold Content On The Shear Strength, Toughness, IMC And Void Formation [TT267. C518 2004 f rb Kejuruteraan] [Microfiche 7715]. [PDF]

open access: yes, 2004
Study of interaction between lead free solder with gold and the mechanical toughness,shear strength of solder that associated with intermetallic compound IMC and void formation was carried out.
Oo, Cheng Ee
core  

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

Gold geochemistry and mineralogy of till fines: a new approach for data integration [PDF]

open access: yesBulletin of the Geological Society of Finland, 2000
A new method of heavy mineral (HM) separation and assessment of gold grade was compared with the results of conventional AAS analysis. Sixteen gold micronuggets and a number of particles of native metal and metal alloys (brass, tin, bismuth, lead) were ...
V. Knauf   +3 more
doaj   +1 more source

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