Results 51 to 60 of about 1,492,330 (159)

Comparing Castability of Nickel-Chromium, Cobalt-Chromium, and Non-Precious Gold Color Alloys, Using two Different Casting Techniques

Journal of Dentistry, 2022
Statement of the Problem: The castability of nonprecious gold color alloy using torch/ centrifugal and induction/vacuum-pressure casting techniques has not been studied yet. Purpose: This study was conducted to compare the castability of nickel chromium,
Elham Ansarifard , Mitra Farzin , Arghavan Zohour Parlack , Masumeh Taghva , Razieh Zare   +4 more
doaj   +1 more source

Structure and energetics of Si(111)-(5x2)-Au

, 2009
We propose a new structural model for the Si(111)-(5x2)-Au reconstruction. The model incorporates a new experimental value of 0.6 monolayer for the coverage of gold atoms, equivalent to six gold atoms per 5x2 cell. Five main theoretical results, obtained
F. J. Himpsel, Ingo Barke, R. Doremus, Steven C. Erwin   +3 more
core   +1 more source

Investigating hydrothermal alteration associated with gold mineralization in Birnin-Gwari through tranformation of aero-radiometric data

Proceedings of the Nigerian Society of Physical Sciences
Gold mining is a significant driver of wealth, serving as a reliable store of value against currency decline and a favoured hedge against inflation.
YUSUF BELLO, S. C. Evans, Hammed Lawal, J. O. Alao, D. Daramola, T. O. Amuda, M. B Yakubu, S. M. Hussaini   +7 more
doaj   +1 more source

Comparative study between using QuantiFERON and tuberculin skin test in diagnosis of Mycobacterium tuberculosis infection

Egyptian Journal of Chest Disease and Tuberculosis, 2013
Aim: Study degree of sensitivity and specificity of IFN-γ as QuantiFERON-TB Gold In-Tube assay in diagnosis of tuberculosis instead of tuberculin test. Subjects and methods: Forty patients were included in this study subdivided into two groups.
Sohair A. Abdel-Samea, Yasser Mahmoud Ismail, Sahar Mohamed A. Fayed, Ahmad Abdelsadek Mohammad   +3 more
doaj   +1 more source

Distribution, analysis, and recovery of fine gold from alluvial deposits [PDF]

, 1973
The United States Bureau of Mines, in its Heavy Metals Program, desired to have research performed to determine the size-frequency distribution and possible economic value of gold particles in the fine size ranges of Alaskan placer deposits.
Cook, D.J., Rao, P.D.
core  

Evaluation of dental therapists undertaking dental examinations in a school setting in Scotland [PDF]

, 2016
Objective: To measure agreement between dental therapists and the Scottish gold-standard dentist undertaking National Dental Inspection Programme (NDIP) examinations.
Curnow, Morag M., Jones, Colwyn M., Macpherson, Lorna D., McMahon, Alex D., O'Keefe, Emma J.   +4 more
core   +1 more source

A Study of the Electrodeposition of Gold Process in Iodine Leaching Solution

Metals, 2019
This paper mainly discusses electrodeposition of gold from iodine leaching solution through single-factor testing and explores the influence of gold concentration in catholyte, mass fraction of iodine in anolyte, anolyte n(I2):n(I−), cell voltage ...
Qi Meng, Guichun Li, Hua Kang, Xiaohui Yan, Huiping Wang, Deyong Xu   +5 more
doaj   +1 more source

Reforming the International Monetary System in the 1970s and 2000s: Would an SDR Substitution Account Have Worked [PDF]

, 2014
This paper analyzes the discussion of a substitution account in the 1970s and how the account might have performed had it been agreed in 1980. The substitution account would have allowed central banks to diversify away from the dollar into the IMF’s ...
McCauley, Robert N., Schenk, Catherine R.   +1 more
core  

Cubic optical nonlinearity of free electrons in bulk gold

, 1995
A fast (τresponse <90 fs) free-electron spin-flipping frequency-degenerate nonlinearity with a significant value of |χ(3)xxyy(ω,ω,ω,-ω) χ(3)xyyx(ω,ω,ω,-ω)| ~ 10-8 esu has been observed in bulk gold at 1260 nm by use of a new pump-probe polarization ...
Beuneu, Burns, Dumke, E. V. Slobodchikov, Eesley, Fann, H. Loh, Hache, Hache, Hübner, I. R. Shatwell, Ivanov, N. I. Zheludev, P. J. Bennett, Pan, Popov, S. V. Popov, Schoenlein, Shen, Svirko, V. E. Gusev, V. F. Kamalov, Wang, Yu. P. Svirko, Zheludev   +24 more
core   +1 more source

Calibration of the length of a chain of single gold atoms [PDF]

, 2002
Using a scanning tunneling microscope or mechanically controllable break junctions it has been shown that it is possible to control the formation of a wire made of single gold atoms. In these experiments an interatomic distance between atoms in the chain
A. I. Yanson, A.I. Yanson, C. Untiedt, C. Untiedt, C.J. Muller, D. Sánchez-Portal, E. Scheer, E. Scheer, E.Z. da Silva, G. Binnig, G. Rubio, G. Rubio-Bollinger, G. Rubio-Bollinger, H. Häkkinen, H. Ohnishi, H.B. Michaelson, J.A. Torres, J.G. Simmons, J.I. Pascual, J.M. van Ruitenbeek, K.H. Gundlach, L. De Maria, M. Okamoto, M.R. Sørensen, N. Agraït, N. Agraït, N. Agraït, O.Yu. Kolesnychenko, O.Yu. Kolesnychenko, R. Grande, R.H.M. Smit, S. Bahn, S. Vieira, T.R. Albrecht, V. Rodrigues   +34 more
core   +4 more sources