The Pure Gold of Psychoanalysis and New Alloys

1993 ◽  
Vol 38 (4) ◽  
pp. 423-423
Author(s):  
Donald Morgan
Keyword(s):  
Pure Gold

Diagnostics of Gold Laser Plasmas

1988 ◽  
Vol 102 ◽  
pp. 357-360
Author(s):  
J.C. Gauthier ◽  
J.P. Geindre ◽  
P. Monier ◽  
C. Chenais-Popovics ◽  
N. Tragin ◽  
...  
Keyword(s):  
Experimental Results ◽  
Pure Gold ◽  
Electronic Temperature ◽  
X Ray ◽  
Laser Plasmas ◽  
Collisional Radiative Model ◽  
Radiative Model

AbstractIn order to achieve a nickel-like X ray laser scheme we need a tool to determine the parameters which characterise the high-Z plasma. The aim of this work is to study gold laser plasmas and to compare experimental results to a collisional-radiative model which describes nickel-like ions. The electronic temperature and density are measured by the emission of an aluminium tracer. They are compared to the predictions of the nickel-like model for pure gold. The results show that the density and temperature can be estimated in a pure gold plasma.

scholarly journals Imposed Environmental Stresses Facilitate Cell-Free Nanoparticle Formation by Deinococcus radiodurans

2017 ◽  
Vol 83 (18) ◽  
Author(s):  
Angela Chen ◽  
Lydia M. Contreras ◽  
Benjamin K. Keitz
Keyword(s):  
Gold Nanoparticles ◽  
Silver Nanoparticles ◽  
Environmental Remediation ◽  
Deinococcus Radiodurans ◽  
Environmental Stresses ◽  
Pure Gold ◽  
Metal Reduction ◽  
Content Type ◽  
Nanoparticle Production ◽  
Nanoparticle Formation

ABSTRACT The biological synthesis of metal nanoparticles has been examined in a wide range of organisms, due to increased interest in green synthesis and environmental remediation applications involving heavy metal ion contamination. Deinococcus radiodurans is particularly attractive for environmental remediation involving metal reduction, due to its high levels of resistance to radiation and other environmental stresses. However, few studies have thoroughly examined the relationships between environmental stresses and the resulting effects on nanoparticle biosynthesis. In this work, we demonstrate cell-free nanoparticle production and study the effects of metal stressor concentrations and identity, temperature, pH, and oxygenation on the production of extracellular silver nanoparticles by D. radiodurans R1. We also report the synthesis of bimetallic silver and gold nanoparticles following the addition of a metal stressor (silver or gold), highlighting how production of these particles is enabled through the application of environmental stresses. Additionally, we found that both the morphology and size of monometallic and bimetallic nanoparticles were dependent on the environmental stresses imposed on the cells. The nanoparticles produced by D. radiodurans exhibited antimicrobial activity comparable to that of pure silver nanoparticles and displayed catalytic activity comparable to that of pure gold nanoparticles. Overall, we demonstrate that biosynthesized nanoparticle properties can be partially controlled through the tuning of applied environmental stresses, and we provide insight into how their application may affect nanoparticle production in D. radiodurans during bioremediation. IMPORTANCE Biosynthetic production of nanoparticles has recently gained prominence as a solution to rising concerns regarding increased bacterial resistance to antibiotics and a desire for environmentally friendly methods of bioremediation and chemical synthesis. To date, a range of organisms have been utilized for nanoparticle formation. The extremophile D. radiodurans, which can withstand significant environmental stresses and therefore is more robust for metal reduction applications, has yet to be exploited for this purpose. Thus, this work improves our understanding of the impact of environmental stresses on biogenic nanoparticle morphology and composition during metal reduction processes in this organism. This work also contributes to enhancing the controlled synthesis of nanoparticles with specific attributes and functions using biological systems.

scholarly journals Local Plasmonic Studies on Individual Core–Shell Gold–Silver and Pure Gold Nano-Bipyramids

2014 ◽  
Vol 118 (44) ◽  
pp. 25643-25650 ◽  
Author(s):  
Raul Arenal ◽  
Luc Henrard ◽  
Lucian Roiban ◽  
Ovidiu Ersen ◽  
Julien Burgin ◽  
...  
Keyword(s):  
Pure Gold ◽  
Core Shell ◽  
Gold Silver ◽  
Individual Core

scholarly journals GOLD PROVENANCE AND CHARACTERIZATION USING MICRO X-RAY FLUORESCENCE (µXRF): PRELIMINARY RESULTS/ PROVENIÊNCIA E CARACTERIZAÇÃO DE OURO COM MICRO FLUORESCÊNCIA DE RAIOS X (μXRF): RESULTADOS PRELIMINARES

2018 ◽  
Vol 3 (3) ◽  
pp. 155-165
Author(s):  
William Murussi Canto ◽  
Hamilton Santos Gama Filho ◽  
Marcelino José dos Anjos ◽  
Armando Dias Tavares Jr. ◽  
Mauro César Geraldes
Keyword(s):  
Sample Preparation ◽  
Pure Gold ◽  
Noninvasive Technique ◽  
X Ray ◽  
Preliminary Results ◽  
Icp Ms ◽  
Para Determinar ◽  
Made In ◽  
Gold Digging

This work presents some preliminary results that allows to characterize gold samples using Micro X-Ray Fluorescence/µXRF. The first aim of this work is to apply a noninvasive technique, preserving the sample integrity, in order to identify the composition of gold samples and to recognize their possible geographical provenance. Samples have been obtained in geographically distinct gold-digging sites, in three Brazilian and one Colombian areas. These samples were processed only by fusion into a furnace at 1,200 ºC. The proportion of Au, Ag and Cu were measured in gold samples. The results of this work, allowed to characterize and to identify quite well the pure gold provenance, using µXRF instrumentation and related techniques. Further work is in progress to determine the behavior of mixed gold samples from different provenances. Besides that, measurements with different sample preparation will be made, in order to compare the results obtained in this work with those obtained by LA-ICP-MS techniques. ResumoEste trabalho apresenta resultados preliminares que permitem caracterizar amostras de ouro utilizando a Micro Fluorescência de Raios-X/ µXRF. O primeiro objetivo deste trabalho é aplicar uma técnica não invasiva, preservando a integridade da amostra, para identificar a composição de amostras de ouro e reconhecer a sua possível proveniência geográfica. As amostras foram obtidas em locais de exploração de ouro geograficamente distintos, em três áreas brasileiras e uma colombiana. Estas amostras foram sugeitas a fusão a 1.200 ºC, num forno. A proporção de Au, Ag e Cu foi medida em amostras de ouro. Os resultados deste trabalho permitiram caracterizar e claramente identificar a proveniência de ouro puro, utilizando resultados de µXRF. Estão em andamento outros trabalhos para determinar o comportamento da mistura de amostras de ouro de diferentes procedências. Além disso, serão efetuadas medições com diferentes preparações de amostras, a fim de comparar os resultados obtidos neste trabalho com os que estão sendo aquiridos com técnicas de LA-ICP-MS.

scholarly journals Uqubat Denda Emas Murni dalam Qanun Jinayat

2020 ◽  
Vol 21 (3) ◽  
pp. 513-526
Author(s):  
Firdaus Armanda ◽  
Syahrizal Abbas
Keyword(s):  
Research Method ◽  
Qualitative Method ◽  
Pure Gold ◽  
Sociological Factors ◽  
History Of ◽  
Islamic Values ◽  
Descriptive Qualitative

Penelitian ini bertujuan untuk mengetahui mengapa qanun jinayat menggunakan emas murni sebagai standar dalam jarimah maisir dan uqubat denda terhadap pelaku jinayat. Selain itu, apa menjadi dasar filosofis, yuridis, dan sosiologis bagi penentuan standar uqubat denda terhadap pelaku jinayat. Metode penelitian yang digunakan adalah metode deskriptif-kualitatif. Hasil penelitian menunjukkan bahwa uqubat emas murni yang terdapat dalam Qanun Jinayat tidak terlepas dari sejarah masyarakat Aceh yang kental dengan nilai keislaman, sehingga uqubat emas murni yang dikenal dalam Islam diambil juga dalam qanun. Terdapat tiga faktor yang mempengaruhi penetapan uqubat emas murni yang terdapat dalam qanun Aceh, yaitu faktor filosofis, yuridis, dan sosiologis. Pure Gold Uqubat In Jinayat Qanun This study aims to find out why the qanun Jinayat uses pure gold as the standard in jarimah maisir and uqubat (fines) against perpetrators of jinayat. Moreover, what is philosophical, juriditical, and sociological basis for determining the uqubat standard for fines for jinayat perpetrators. The research method used is descriptive-qualitative method. The results showed that pure gold uqubat contained in jinayat qanun is inseparable from the history of the Achenese which is thick with islamic values, so the pure gold uqubat is also taken from qanun. There are three factors that influece the establishment of pure gold uqubat stipulate in Aceh qanun, namely philosophical, juridical, and sociological factors.

Dorothy Garrod, first woman Professor at Cambridge

Antiquity ◽  
2000 ◽  
Vol 74 (283) ◽  
pp. 131-136
Author(s):  
Pamela Jane Smith
Keyword(s):  
Pure Gold ◽  
Stone Age ◽  
Woman Professor

In May 1939, the accomplished Palaeolithic archaeologist, Dorothy Garrod, was elected Cambridge's Professor of Archaeology — the first woman to hold a Chair at either Cambridge or Oxford. Garrod was well qualified for the position in several ways. Trained by R.R. Marett at Oxford and the Abbé Henri Breuil in France, she was renowned for her excavations in Gibraltar, Palestine, Southern Kurdistan and Bulgaria. By 1939, Garrod was one of Britain's finest archaeologists. She had discovered the wellpreserved skull fragments of ‘Abel’, a Neanderthal child, in Gibraltar, identified the Natufianculture while excavating Shukbah near Jerusalem, directed the large, long-term excavations at Mt Carmel, established the Palaeolithic succession for that crucial region and then travelled, in 1938, to explore the important Palaeolithic cave of Bacho Kiro in Bulgaria. Published reports of her excavations had appeared promptly and were very favourably reviewed. The prehistorian, Grahame Clark, who was to succeed her to the Disney Chair in 1952, described Garrod's The Stone Age of Mount Carmel (1937) as ‘pure gold’ (Clark 1937: 488).

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