positive results in the T.R.U.E. TEST. Data were processed
and analyzed using SPSS version 11. 5 for Windows (SPSS
Inc). Qualitative variables were compared using the chi-
square test with a Yates correction or the Fisher exact text
when the conditions for applying the chi-square test could
not be met. The 5 most common allergens were nickel sulfate,
GST, thiazolinones, fragrance mix, and
paraphenylenediamine. A total of 35 patients ( 23. 5 %) tested
positive for GST, which came second to nickel sulfate
( 55. 7 %) in the present series. Dermatitis affected the hands in
57. 1 % of cases. No significant differences were detected
with respect to age, sex, profession, intolerance to metal, and
known allergies. Of the patients who tested positive to GST,
82. 9 % could not identify a contactant (P=. 012 ). In addition,
17. 1 % were positive for GST only, whereas 99. 1 % of those
who tested negative with GST were sensitized to ≥ 2
allergens (P=. 001 ). We cannot rule out differences with
respect to co-occurrence with other skin complaints (P=. 078 ).
https://pubmed.ncbi.nlm.nih.gov/ 28029349 /
[ 78 ]Review of gold leaching in thiosulfate-based solutions.
Author links open overlay panelFeng XIE a, Jun-nan CHEN
a, Jian WANG b, Wei WANG a. Abstract: Numerous non-
cyanide leaching lixiviants have been developed, among
which thiosulfate is considered the most promising
alternative to cyanide due to its non-toxicity, low price, high
leaching rate and excellent characteristics in dealing with
carbonaceous and copper-bearing gold ores. The traditional
copper−ammonia−thiosulfate system has been studied
extensively. However, with many years of process
development, there are still some problems and challenges
with this gold leaching system. A series of studies using
nickel-, cobalt- and ferric-based catalyst to substitute copper
have been conducted with the purpose of reducing the
consumption of thiosulfate. A variety of non-ammonia
thiosulfate leaching systems including oxygen−thiosulfate,
copper−thiosulfate, copper−EDA−thiosulfate, ferric−
EDTA−thiosulfate, and ferric−oxalate−thiosulfate leaching
systems have been also developed to eliminate the potential
side-effect of ammonia. In this review, the basic theory and
process development of some main gold leaching systems
based on thiosulfate solutions were systematically
summarized to illustrate the research status on thiosulfate
leaching process. The potential effects of various additives
such as organic ligands containing amino, carboxyl or
hydroxy functional groups on gold thiosulfate leaching were
described in detail. The potential opportunity and challenge
for promoting the industrial development of thiosulfate-based
gold leaching systems were also discussed.
http://www.sciencedirect.com/science/article/pii/S 1003632621657
45 X
[ 79 ]The elements / Bibliographic Details. Author /
Creator: Emsley, John. Edition: 3 rd ed. Imprint: Oxford:
Clarendon Press; New York: Oxford University Press, 1998.
Description: vii, 292 p.: ill.; 29 cm. Language: English
Subject: Chemical elements - - Handbooks, manuals, etc.
Chemical elements. Handbooks and manuals. Format:
PrintBook. http://www.worldcat.org/es/title/ 51451582[ 80 ]Szabolcs Márka. Current Position: Walter O. LeCroy
Jr. Associate Professor of Physics. Institution: Columbia
University. Discipline: Astrophysics & Cosmology.
Recognized for: Studying the birth and death of black holes
and the resulting ripples in space time. Areas of Research
Interest and Expertise: Astrophysics, Gravitational Waves,
Biophysics, BioOptics, Neuroscience. Biography: PhD,
Physics, Vanderbilt University. Diploma, Physics, Kossuth
Lajos University, Hungary. The goal of Dr. Marka's research
is to detect the gravitational waves of cosmic origin which
would allow researchers to study cosmic processes and
objects that are not possible to see through today's
technology. At his lab in Columbia University, he is
working on projects that will strengthen both the reach and
reliability of the Laser Interferometer Gravitational-Wave
Observatory (LIGO) which was funded by the National
Science Foundation to aid in the detection and measurement
of cosmic gravitational waves. When not studying the birth
and death of cosmic black holes, Dr. Marka is trying to
combat and eventually eradicate malaria through light
barriers designed to block malaria transmission. Dr. Marka
and collaborators also invented a microscopic optical
touchscreen device that allows the capture the patterns of
locomotion of mosquitoes, fruit flies, and other animals. He
received a Grand Challenges in Global Health grant from the
Bill and Melinda Gates Foundation to help fund his
BioOptics research
https://physics.columbia.edu/content/szabolcs-marka[ 81 ]Imre Bartos Ph.D. Associate Professor of Physics.
Institute for High Energy Physics and Astrophysics (IHEPA).
Dr. Imre Bartos received his PhD from Columbia University,
where he subsequently remained as a lecturer and then
research scientist before joining the faculty at the University
of Florida. Dr. Bartos is a member of the LIGO Scientific
Collaboration, the LISA Consortium, and is an associate
member of the IceCube Collaboration. He also serves as an
associate member of the Commission of Astroparticle
Physics of the International Union of Pure and Applied
Physics. Dr. Bartos has been awarded the Alfred P. Sloan
Research Fellowship, and the Excellence Award from the
University of Florida. He was part of a Grand Challenges