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Ellis T.W.,Dallas Technologies | Bevans S.,Quemetco
Pb Zn 2010 - Lead-Zinc 2010 Symposium, Held in Conjunction with COM 2010 | Year: 2010

Quemetco, City of Industry, California, an Eco-Bat battery recycling facility, maintains state of the art emissions control technology producing 100,000+ metric tons of lead/lead alloys primarily from spent lead acid batteries controlling emission streams of the feed dryer, reverberatory and electric arc furnaces, and pyro-metallurgical refinery. In 2008, Quemetco introduced the most advanced air emissions treatment system significantly reducing the already low emissions installing both a regenerative thermal oxidizer (RTO) reducing hydrocarbon emissions, and a wet electrostatic precipitator (WESP) lowering lead, arsenic, cadmium and nickel emissions. Quemetco's accomplishment demonstrates a new maximum available control technology (MACT) for secondary smelters.

Karakurt G.,Case Western Reserve University | Patel V.,Case Western Reserve University | Patel V.,Dallas Technologies | Whiting K.,Case Western Reserve University | Koyuturk M.,Case Western Reserve University
Journal of Family Violence | Year: 2016

Intimate partner violence (IPV) often culminates in acute physical injury, sexual assault, and mental health issues. It is crucial to understand the healthcare habits of victims to develop interventions that can drastically improve a victim’s quality of life and prevent future abuse. The objective of this study is to mine de-identified and aggregated Electronic Health Record data to identify women’s health issues that are potentially associated with IPV. In this study we compared health issues of female domestic abuse victims to female non-domestic abuse victims. The Domestic abuse population contained 5870 patients, while the Non-Domestic Abuse population contained 14,315,140 patients. Explorys provides National Big Data from the entire USA. Statistical analysis identified 2429 terms as significantly more prevalent among victims of domestic abuse, compared to the general population. These terms were classified into broad categories, including acute injury, chronic conditions, substance abuse, mental health, disorders, gynecological and pregnancy related problems. © 2016 Springer Science+Business Media New York

Bagchi D.,Sparsha Learning Technologies | Kaushik K.,Sparsha Learning Technologies | Kapoor B.,Dallas Technologies
Proceedings of the 3rd Interdisciplinary Engineering Design Education Conference, IEDEC 2013 | Year: 2013

Online learning is fast becoming a preferred medium of learning. It is estimated that 6 million college students took at least one online course last year. Online learning in technical education is primarily delivered through pre-recorded videos. We will discuss a virtual learning system in the context of electronics engineering education. This learning system models the circuits as well as the instruments that are typically used in the labs to allow students to carry out the experiments in a virtual environment. We have extended the concept further to allow students to carry out the experiments on the web-browsers and devices of their choice. The simulations themselves are carried out utilizing cloud computing infrastructure such as those provided by Amazon and Microsoft while the use focuses on putting the experiments. © 2013 IEEE.

Mahmood M.A.I.,Dallas Technologies | Ali W.,Dallas Technologies | Adnan A.,University of Texas at Arlington | Iqbal S.M.,Dallas Technologies | Iqbal S.M.,University of Texas at Arlington
Journal of Physical Chemistry B | Year: 2014

Biomarker-binding nucleotide sequences, like aptamers, have gained recent attention in cancer cell isolation and detection works. Self-assembly and 3D conformation of aptamers enable them to selectively capture and bind diseased cells and related biomarkers. One mode of utilizing such an extraordinary selective property of the aptamers is by grafting these in nanopores. Coating the inside walls of the nanopore with biomarker specific ligands, like DNA, changes the statistics of the dynamic translocation events. When the target protein passes through the nanopore, it interacts with ligand coated inside the nanopore, and the process alters the overall potential energy profile which is essentially specific to the protein detected. The fundamental goal in this process is to ensure that these detection motifs hold their structure and functionality under applied electric field and experimental conditions. We report here all-atom molecular dynamics simulations of the effects of external electric field on the 3D conformation of such DNA structures. The simulations demonstrate how the grafted moieties affect the translocation time, velocity, and detection frequency of the target molecule. We also investigated a novel case of protein translocation, where DNA is prebound to the protein. As model, a thrombin-specific G-quartet and thrombin pair was used for this study. © 2014 American Chemical Society.

Evanoo J.,Dallas Technologies | Cameron D.,Dallas Technologies
Healthcare financial management : journal of the Healthcare Financial Management Association | Year: 2010

Capital equipment strategic planning (CESP) is a data-driven method that can be used for evaluating a hospital's existing equipment in light of its business goals and budget to develop an unbiased multiyear plan for replacing aging equipment. The foundation for CESP is a rigorous technology assessment of all clinical equipment items that represent a significant cost to replace (above a certain threshold). Armed with the data gleaned from this technology assessment, hospital executives can begin to make informed decisions about where to allocate capital spending to replace mission-critical clinical equipment.

Jones J.B.,Dallas Technologies
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2016

The advent of laser technology has been a key enabler for industrial 3D printing, known as Additive Manufacturing (AM). Despite its commercial success and unique technical capabilities, laser-based AM systems are not yet able to produce parts with the same accuracy and surface finish as CNC machining. To enable the geometry and material freedoms afforded by AM, yet achieve the precision and productivity of CNC machining, hybrid combinations of these two processes have started to gain traction. To achieve the benefits of combined processing, laser technology has been integrated into mainstream CNC machines - effectively repurposing them as hybrid manufacturing platforms. This paper reviews how this engineering challenge has prompted beam delivery innovations to allow automated changeover between laser processing and machining, using standard CNC tool changers. Handling laser-processing heads using the tool changer also enables automated change over between different types of laser processing heads, further expanding the breadth of laser processing flexibility in a hybrid CNC. This paper highlights the development, challenges and future impact of hybrid CNCs on laser processing. © 2016 SPIE.

David Prengaman R.,Dallas Technologies | Ellis T.,Dallas Technologies | Mirza A.,Dallas Technologies
Pb Zn 2010 - Lead-Zinc 2010 Symposium, Held in Conjunction with COM 2010 | Year: 2010

It has been 10 years since RSR Technologies introduced a new rolled anode for Zinc Electrowinning. The anode contains calcium and significantly less silver than the traditional cast or rolled lead silver anodes. The anodes are rolled to produce uniform dispersion of calcium and silver. These anodes have much higher mechanical properties than lead-silver which makes them more resistant to deformation. The calcium allows the anode to condition in several days. The anodes have been extensively tested in Japan, North America, South America, Europe, and South Africa. Anodes have been service for up to 5 years without significant thinning or corrosion. The anodes remain straight and MnO2 removal is easier than with cast or rolled lead silver anodes. The anodes yield a 1% improvement in current efficiency when compared to conventional anodes. This paper describes the experiences with rolled lead-calcium-silver anodes, the resistance or inertia to their use, the manufacturing process, and improvements to surface treatment and handling which will enhance the use of the anodes in cellhouse operations. The paper also compares the significant economic benefits in utilizing RSR rolled lead-calcium-silver anodes in today's environment.

Ellis T.W.,Dallas Technologies | Mirza A.H.,Dallas Technologies
Journal of Power Sources | Year: 2010

Secondary lead, i.e. material produced by the recycling of lead-acid batteries has become the primary source of lead in much of the world. This has been important to the secondary lead industry as other uses have dwindled, e.g. lead based pigments, chemicals, fuel additives, solders and CRT glasses [1]. Presently, battery manufacturing accounts for greater than 80% of lead consumption while recycled lead accounts for approximately the same market share of lead supply. These two facts strongly demonstrate the battery manufacturing and recycled lead are intimately coupled in everyday life. In this paper we will explore how recycled lead has become the material of choice for battery construction through the development of a recovery and refining process that exceeds the industries requirements. Particular focus will be on addressing the results presented by Prengaman [2] on the effects of contaminant or tramp elements on gassing in lead-acid batteries. © 2010 Elsevier B.V. All rights reserved.

PubMed | Dallas Technologies
Type: Letter | Journal: World journal of gastroenterology | Year: 2013

Garcinia cambogia extract (GC) with its active component consisting of hydroxycitric acid (HCA) is widely utilized for weight loss. Various HCA salts are available, including calcium, magnesium, potassium and mixtures of these. Experimentally, these salts exhibit different properties with some, but not all, improving glucose tolerance and blood pressure. Recently, obesity-prone C57BL/6J mice were fed a high-fat diet (HFD, 45 kcal% fat) with or without GC (1%, w/w) for 16 wk. The active arm reduced visceral fat, adipocyte size and serum glucose, yet purportedly also exhibited hepatic collagen accumulation, lipid peroxidation and increased mRNA levels of genes related to oxidative stress. The latter findings are at odds with a large body of animal and human studies that have been conducted on the safety and efficacy of HCA. This literature shows HCA to be protective against the liver toxicity associated with ethanol and dexamethasone administration, and to maintain serum aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase at near normal levels. In both animal and clinical literature, elevated intakes of HCA per se have not led to signs of inflammation or hepatotoxicity. The compound has been found to reduce markers of inflammation in brain, intestines, kidney and serum.

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