Iniciodetermination thallium variables
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A novel, simple, rapid, sensitive and selective method has been proposed for the trace determination of thallium by spectrophotometric detection. This method is based on the oxidation of MBTH (3-methyl-2-benzothiazolinone hydrazone hydrochloride) by thallium(III) to form diazonium cation, which couples with IPH (Imipramine hydrochloride) in phosphoric acid medium at room temperature giving a ...
Investigations were carried out to establish the most favorable conditions to give a highly color intensity and to achieve maximum color development in the quantitative determination of thallium. The influence of each of the following variables on the ion associate complex formation reaction was tested. Effect of pH
Determination Thallium Variables. determination of perioperative cardiac risk by,to determine the predictive value of adenosine thallium-201 myocardial imaging for clinical variables that correlated with perioperative cardiac events were a .prognostic value of thallium-201 myocardial perfusion,diagnostic tool useful in determining the presence or absence of anatomical coronary other patient ...
R-squared (R2) is a statistical measure that represents the proportion of the variance for a dependent variable that's explained by an independent variable or variables in a regression model. The correlation, denoted by r, measures the amount of linear association between two variables.r is always between -1 and 1 inclusive.The R-squared.
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Determination of thallium has become a major interest because of its high toxicity, especially as the monovalent cation. Thallium poisoning in the human body must be checked quickly by analysis of biological samples. This review highlights the development of highly sensitive detection techniques app …
This study aimed to determine urine, blood, and hair thallium (Tl) concentrations in illicit opioid users along with the relevant clinical signs and symptoms consistent with thallotoxicosis and to compare them with the corresponding variables in the control non-opioid user group. Materials and methods:
3.2.. Optimization of experimental conditions for anodic stripping voltammetric determination of thallium(I) at a BFEAiming to establish the most suitable experimental conditions for the square wave anodic stripping voltammetric measurements of thallium(I) at the rotating-disc bismuth film electrode in acetate buffer, a univariate optimization study was performed with the deposition time, the ...
Determination of the quantitative thallium imaging. thallium variables that best correlates with the presence or absence of coronary artery disease. The data suggest that a combination of selected variables is better than a single variable for coronary disease detection. Methods This study of 380 patients consisted of two parts. In part
A simple, selective, and sensitive field procedure for the spectrophotometric determination of thallium in water is described. The preconcentration is carried out by extracting the chlorothallate ion-pair complex of a cationic surfactant, i.e. CTAB or CPC, with toluene. The extract is reacted with a basic dye, i.e. brilliant green (BG). The molar absorptivity of the complexes is in the range ...
Determination of the quantitative thallium imaging. thallium variables that best correlates with the presence or absence of coronary artery disease The data suggest that a combination of selected variables is better than a single variable for coronary disease detection Methods This study of 380 patients consisted of two parts In part.
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DOI: 10.1016/S0735-1097(86)80462-4 Corpus ID: 34438895; Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease. @article{Kaul1986DeterminationOT, title={Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease.}, author={Sanjiv Kaul and Charles A. Boucher and John B. Newell and David ...
PDF | On Sep 19, 2010, Beata Krasnodêbska-Ostrêga published Determination of thallium(III) in environmental samples | Find, read and cite all the research you need on ResearchGate
Determination of thallium(I) by flotation-spectrophotometric method using iodide and rhodamine B. by Mohammad Said Hosseini, Yousef Naseri. Analytical sciences : the international journal of the Japan Society for Analytical Chemistry. Read more related scholarly scientific articles and abstracts.
A combination of variables derived from quantification of exercise thallium images provides a superior sensitivity and specificity for the detection of coronary artery disease compared with the use of a single variable. Publication types Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. MeSH terms Adult Cardiac Catheterization
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Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease Sanjiv Kaul, Charles A. Boucher, John B. Newell, David A. Chesler, Joshua M. Greenberg, Robert D. Okada, H. William Strauss, Robert E. Dinsmore, Gerald M. Pohost
A stepwise logistic regression analysis model was used to define the combination of quantitative thallium variables that best correlates with the presence or absence of coronary artery disease. The data suggest that a combination of selected variables is better than a single variable for coronary disease detection. Methods
Assistant Professor. Shahrekord University. Sep 2012 - Sep 20164 years 1 month. Conduct research on the development of methods and synthesis of nanomaterials for environmental chemistry purposes, including pollutants determination and removal. Publish peer-reviewed papers and supervise students.
Determination of metals: aluminum, antimony, arsenic, cadmium, chromium, cobalt, copper, manganese, mercury, nickel, lead, selenium, thallium, vanadium, zinc ...
The Model Independent Variables Note: The above data come from the 2006 National Community Survey. •Q104: Age (7 levels) •Q105: Education (6 levels) •Whiteness (Dummied) Block 1: •Femaleness (Dummied) Demographics •All 0-10 Likert-type response scale: •Q21: I feel comfortable voicing a complaint at a public meeting in my community ...
Novel modulators, including antibodies and derivatives thereof, and methods of using such modulators to treat hyperproliferative disorders are provided.
Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease ... the relative value of different imaging variables for detection of coronary artery disease has not been analyzed in a large group of patients with cardiac catheterization data. ... 60 and 87% for redistribution and 74 and 66% for ...
Overall, CT scan accurately identified clogged arteries in 91% of patients, compared to 69% identified by stress tests.In a subgroup of 111 high-risk patients, CT was accurate in 96% of patients, compared with 80% for stress tests. "No tests is 100 percent accurate 100 percent of the time, but our findings indicate CT angiograms get pretty. Planar Nuclear Medicine Imaging of Right and Left ...
With six thallium variables computed for each of the 15 myocardial segments (5 segments in each of the three views), 90 criteria were determined for each patient based on the quantitative thallium data. The criteria were entered in a binary fashion. If a segment was within the normal range, it was labeled 0, and if it was not, it was labeled 1.
of thallium determination is 0.01 gmL−1. The tolerance limits for interfering ions are discussed. All variables were studied in order to optimize the reaction conditions. The e cacy of the proposed method is shown by the successful determination of traces of thallium in alloys, minerals, standard reference materials, water, and urine samples.
determination thallium variables - Search. Hot Searchs. Linear Regression Analysis. Nov 05, 2010 0183 32 When categorical variables are used, the reference category should be defined first, and all other categories are to be considered in relation to this category The coefficient of determination, r 2, is a measure of how well the regression ...
determination thallium variables. Determination of Trace Tl(I) by Differential Pulse Anodic Apr 02, 2020 Thallium (Tl) is an element spread in the environment but its average content in the Earth's crust is only about 6 × 10 −5 % 1 The main pathway of thallium entering environment is through human activities such as mining, incineration ...
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