DEVELOPMENT AND TESTING OF TECHNOLOGY FOR PROCESSING SANDS FROM THE DREDGE FIELD TEST SITE FOR EXTRACTING GOLD AND HEAVY MINERALS CONTAINING MAGNETIC PARTICLES

2020 ◽  
Vol 26 (8) ◽  
pp. 49-58
Author(s):  
L. Shumilova ◽  
◽  
V. Cherkasov ◽  
G. Yurgenson ◽  
V. Myazin ◽  
...  
Keyword(s):  
Field Test ◽  
Magnetic Particles ◽  
Mineral Resources ◽  
Test Site ◽  
Heavy Minerals ◽  
Industrial Facilities ◽  
Best Available Technologies ◽  
Four Blocks ◽  
Available Technology ◽  
High Level

The state of mineral resources base of the world and Russia is analyzed. Two variants of the model of Russia’s innovative way of development on the basis of the best available technologies’ introduction (BAT) are considered. The conclusion is made that not only Russian resources, but also Russian technologies, specialists and equipment play an important role in the choice of the model of innovative way of development. The authors’ block-scheme of BAT implementation at a mining enterprise is presented. It consists of four blocks: 1) analytical and research; 2) economic and analytical; 3) implementation project development; 4) obtaining an integrated environmental permit and BAT implementation. Emphasis is made on the fact that new environmental standards are being currently developed for the permissible integrated environmental impact of industrial facilities, which by 01.01.2025 should comply with all mining enterprises in Russia. A specific case of the developed, patented and tested technology of processing sands from the dredge field test side of the Dzharmagatay deposit (Transbaikal region), which includes gravity-magnetic-flocculation-electrical methods of enrichment, combined with cyanide leaching of gold, is considered. The method refers to the best available technology, as it allows to achieve a high level of mineral resources use (integration and rationality), to reduce pollution of atmo-, hydro-, litho- and biosphere by emissions and discharges

How American Mineralogist and the Mineralogical Society of America influenced a career in mineralogy, petrology, and plate pushing, and thoughts on mineralogy's future role

2020 ◽  
Vol 105 (9) ◽  
pp. 1285-1296
Author(s):  
W.G. Ernst
Keyword(s):  
Phase Equilibrium ◽  
Plate Tectonics ◽  
Dynamic Equilibrium ◽  
Mineral Resources ◽  
Heavy Minerals ◽  
University Of Minnesota ◽  
Near Surface ◽  
Crustal Rocks ◽  
Doctoral Research ◽  
Petrology And Geochemistry

Abstract My geologic research began at Carleton College. I studied heavy minerals in some midcontinent orthoquartzites, publishing my very first paper in American Mineralogist in 1954. As a master's candidate at the University of Minnesota, I investigated igneous differentiation in a diabase-granophyre sill of the Duluth Gabbro Complex. Later, in a Ph.D. program at Johns Hopkins University, I became Joe Boyd's apprentice at the Geophysical Laboratory (GL), and for a time was phase-equilibrium god of the Na-amphiboles. Doctoral research earned me an offer of a UCLA assistant professorship as a mineralogist in 1960. There, I continued pursuing amphibole P-T stability relations in lab and field. My glaucophane phase equilibrium research would later be found to have instead crystallized Na-magnesiorichterite. However, amphibole research led me to map field occurrences of HP-LT (high P-low T) blueschists of the Franciscan Complex. Thus, when plate tectonics emerged in the late 1960s, I was deep in the subduction zone. My recent studies focused on the petrology and geochemistry of oceanic crustal rocks, Californian calc-alkaline arcs, and coesite ± microdiamond-bearing crustal margin rocks in various parts of Eurasia. Other works treated global mineral resources and population, mineralogy and human health, and early Earth petrotectonic evolution. I tried to work on important problems, but mainly studied topics that fired my interest. For the future, I see the existential challenge facing humanity and the biosphere as the imperative to stop our overdrafting of mineral resources. This will require reaching a dynamic equilibrium between the use and replenishment of near-surface resources (i.e., nutrients) essential for life. Earth scientists are planetary stewards, so we must lead the way forward in life-supporting mineral usage, recycling, substitution, and dematerialization. In any event, sustainable development will soon return to the Earth's Critical Zone of life because Mother Nature—the ruling terrestrial economist—abhors long-term overdrafting of resources1.

Inland Oiled Wildlife Response: It’s a Different Animal

2017 ◽  
Vol 2017 (1) ◽  
pp. 1795-1805
Author(s):  
Curtis Clumpner ◽  
Michael Ziccardi
Keyword(s):  
At Risk ◽  
Oil Spills ◽  
Geographical Area ◽  
State Legislature ◽  
Lessons Learned ◽  
California Department ◽  
Increased Risk ◽  
Available Technology ◽  
Transport Patterns ◽  
High Level

ABSTRACT 2017-311 The Oiled Wildlife Care Network (OWCN) was established in 1994 to address the need for timely, consistent, and professional science-based preparedness and response for wildlife at risk from oil spills occurring in the marine waters of California. Its mission focused on providing a high level of professional care based on the best available technology and science combined with the experience of many organizations that were pioneers in the field of wildlife rehabilitation. Since that time, the OWCN and its now more than 35 members have responded to over 100 spills while caring for more than 8,200 impacted animals. In 2014, in response to the increased risk due to changing sources and transport patterns in oil coming to refineries in California, the State legislature expanded the OWCN’s responsibility to include responding to oiled wildlife impacted during oil spills in all surface waters of California. Since then, the OWCN has worked to expand its plan and resources to ensure readiness to provide best achievable capture and care to a host of new species in the myriad of habitats and locations found in a large and ecologically diverse state. The biggest challenges to this expansion are the increased diversity of species and their habitats (California has 233 species and subspecies of reptiles and amphibians), and the increase in geographical scope. Working with the California Department of Fish and Wildlife (specifically the Office of Spill Prevention and Response, or OSPR), the OWCN staff have identified species at risk and response challenges unique to an inland environment and terrestrial species and the appropriate resources meet those challenges and fill current gaps. We have incorporated lessons learned by colleagues during wildlife responses to inland spills including CNR Lake Wabamun (2005), Enbridge Kalamazoo River (2010), Silvertip Pipeline Yellowstone River (2011), and CNRL Cold Lake (2013). We have repurposed and redesigned existing equipment as well as acquiring additional mobile equipment to increase capacity and decrease response time. We have identified and trained first responders over a wide geographical area focusing on regions with increased risk of incident and impacts while leveraging our current primary care facilities with field stabilization and wildlife transportation plans to achieve maximum flexibility and cost effectiveness. We detail both the process that was used to develop this expansion and the resulting additions to the wildlife plan aimed to provide best achievable care to all wildlife species impacted by an inland oil spill in California.

MAJOR FIELD TEST EVALUATES A SHORELINE CLEANER TO SAVE OILED MARSH GRASS

1997 ◽  
Vol 1997 (1) ◽  
pp. 397-402 ◽  
Author(s):  
S. R. Pezeshki ◽  
R. D. DeLaune ◽  
A. Jugsujinda ◽  
G. P. Canevari ◽  
R. R. Lessard
Keyword(s):  
Spartina Alterniflora ◽  
Field Test ◽  
Field Tests ◽  
Field Studies ◽  
Test Site ◽  
Field Conditions ◽  
Marsh Vegetation ◽  
Beneficial Effects ◽  
Live Biomass ◽  
South Louisiana

ABSTRACT Extensive greenhouse studies using intact cores of marsh vegetation including Spartina alterniflora demonstrated the potential of a shoreline cleaner (Corexit 9580) to remove oil from plant canopy. Because of these positive results, a permit to conduct a full-scale field test was obtained by Louisiana State from regulatory agencies in June 1995. Field tests were conducted in a Louisiana marsh at a wildlife refuge in August 1995. The test site contained replicated 8 ft X 8 ft test plots that included the following treatments: oiled with South Louisiana crude oil, oiled and chemically cleaned after 2 days using Corexit 9580, and control. Significant initial reductions in plant stomatal conductance, transpiration, and CO2 fixation rates in response to the “oil” and “oil + Corexit 9580” treatments were noted, which were followed by substantial recovery in the “oil + Corexit 9580” treatment. Use of the cleaner improved the survival and regeneration capability of treated plots because of the low initial mortality rates and the rapid restoration of plant gas exchange activities. Plots treated with “oil + Corexit 9580” had a significantly greater number of live shoots throughout the measurement period in 1995. Biomass harvests conducted at the end of the 1995 growing season revealed that live biomass per unit area of marsh was significantly reduced under all treatments. The second harvest in 1996 indicated that live biomass had recovered to levels close to those of control plots. Our field studies demonstrated that oil can be removed using Corexit 9580 in the field without any detectable adverse effects on plants, In addition, the beneficial effects of Corexit 9580 in rapidly restoring plant transpiration pathways under field conditions was evident. However, plants under all treatments recovered, showing that Spartina alterniflora, given adequate time, can recover from oiling with South Louisiana crude. Additional studies using more stressful oil types such as Bunker C are needed to examine the effectiveness of Corexit 9580 in cleaning plant canopies under field conditions.

THE MAJOR PREDICTIVE MAINTENANCE ACTIONS OF THE ELECTRIC EQUIPMENTS IN THE INDUSTRIAL FACILITIES

2018 ◽  
Vol 18 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Emil Cazacu ◽  
Lucian Petrescu ◽  
Maria-Cătălina Petrescu
Keyword(s):  
Low Voltage ◽  
Electrical Energy ◽  
Predictive Maintenance ◽  
Power Delivery ◽  
Quality Analysis ◽  
Motor Drive ◽  
Industrial Facilities ◽  
Drive Systems ◽  
High Level

Abstract In modern low-voltage electrical installations, the predictive maintenance of the major electrical equipments involved in the power delivery process (transformers) or in the conversion of the electrical energy (especially electric motors) becomes mandatory. Thus, a high level of reliability and safety is assured for both the electric facility and operators. The proactive maintenance is to be non-invasively performed and mainly requires an infrared (IR) thermographic inspection and power quality analysis of the installation loads. A vibration investigation is also necessary for the motor drive systems. The paper critically studies the first two main maintenance procedures revealing their main characteristics, performances and limits. A case-study presents a 1000 kVA distribution transformer that supplies a bakery facility that comprised mainly heaters and inductions motors as loads.

scholarly journals Comportamento tático de atletas sub-15 no futebol: avaliação das alterações ao longo de uma temporada esportiva

2017 ◽  
Vol 19 (2) ◽  
pp. 251
Author(s):  
Gibson Moreira Praça ◽  
Raphael Brito e Sousa ◽  
Jorge Victor De Oliveira Silva ◽  
Frederico Gonçalves Constantino ◽  
Pedro Emílio Drumond Moreira ◽  
...  
Keyword(s):  
Field Test ◽  
Repeated Measures ◽  
Soccer Players ◽  
Significance Level ◽  
Friedman's Test ◽  
Belo Horizonte ◽  
High Level ◽  
The City ◽  
One Way Anova

DOI: http://dx.doi.org/10.5007/1980-0037.2017v19n2p251 This study aimed to compare the tactical behavior of U-15 soccer players over a season. Sixteen high-level athletes (mean age 14.5 years) from the city of Belo Horizonte participated in the study. Athletes were monthly evaluated by means of the field test using the System of Tactical Assessment in Soccer – FUTSAT, which allowed the characterization of the incidence of tactical principles and place of action in the game field, as well as the percentage of positive offensive and defensive tactical principles. Data were analyzed by Friedman’s test (incidence of tactical principles and place of the action) and one-way ANOVA for repeated measures (percentage of positive tactical principles), adopting significance level of p<0.05. Results showed differences in the incidence of offensive and defensive units tactical principle, as well as the place of actions in the game field. An improvement in offensive and defensive tactical behavior was also observed throughout the season.

scholarly journals CO2 Storage and Enhanced Oil Recovery: Sugar Creek Oil Field Test Site, Hopkins County, Kentucky

2013 ◽  
Author(s):  
Scott Frailey ◽  
Thomas Parris ◽  
James Damico ◽  
Roland Okwen ◽  
Ray McKaskle
Keyword(s):  
Enhanced Oil Recovery ◽  
Field Test ◽  
Oil Recovery ◽  
Co2 Storage ◽  
Test Site ◽  
Oil Field
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