Search results for "determination"
showing 10 items of 718 documents
The determination of haemoglobin as cyanhaemiglobin or as alkaline haematin D-575. Comparison of method-related errors.
1989
In order to compare the accuracy of haemoglobin (Hb) determination methods, the commonly used cyanhaemiglobin (HiCN) method and the recently developed alkaline haematin D-575 (AHD) method (R. Zander, W. Lang & H. U. Wolf (1984) Clin. Chim. Acta 136, 83-93; H. U. Wolf, W. Lang & R. Zander (1984) Clin. Chim. Acta 136, 95-104) were tested with respect to method-related errors such as plasma, cell, and Hb errors. Both methods yield a series of more or less significant errors which generally lead to an overestimation of the Hb concentration in the order of 1%. However, in all three cases of plasma errors, i.e. normal plasma error, plasma error in lipaemic blood, and plasma error in bilirubinaemi…
PEMODELAN GEOGRAPHICALLY WEIGHTED REGRESSION (GWR) PADA PERSENTASE KRIMINALITAS DI PROVINSI JAWA TIMUR TAHUN 2017
2020
Crime is everything that exists in Indonesia. Based on BPS data in 2018, East Java Province ranks first in the Province of North Sumatra and the Special Capital Region of Jakarta. This research was conducted to determine the factors that support crime in each Regency / City of East Java Province. The method used in this research is Weighted Geographic Regression (GWR). Geographically Weighted Regression (GWR) is one of the statistical methods used to model variable responses with regional or area-based predictor variables. Based on the GWR results, it is recognized as a variable Population Density Percentage (X1), Open Unemployment Rate (X2), Poor Population (X3), Population who are Victims…
Structural organic chemistry in ecotoxicology
1993
Abstract Role of the methods of structural chemistry in assessment of the ecotoxic effects of organic compounds is described as examples of fate modeling based on structural properties, screening analyses of the affected population, use of model substances and various structure-specific determination methods. Case examples from literature are given and, in addition, structure screening and verification for a contaminant in herring is described.
Cell lineage and cell fate specification in the embryonic CNS of Drosophila.
1997
The Drosophila CNS derives from a population of neural stem cells, called neuroblasts (NBs), which delaminate individually from the neurogenic region of the ectoderm. In the embryonic ventral nerve cord each NB can be uniquely identified and gives rise to a specific lineage consisting of neurons and/or glial cells. This 'NB identity' is dependent on the position of the progenitor cells in the neuroectoderm before delamination. The positional information is provided by the products of segment polarity and dorsoventral (D/V) patterning genes. Subsequently, 'cell fate genes' like huckebein (hkb) and eagle (eg) contribute to the generation of specific NB lineages. These genes act downstream of …
A New Multinomial Accuracy Measure for Polling Bias
2014
In this article, we propose a polling accuracy measure for multi-party elections based on a generalization of Martin, Traugott, and Kennedy's two-party predictive accuracy index. Treating polls as random samples of a voting population, we first estimate an intercept only multinomial logit model to provide proportionate odds measures of each party's share of the vote, and thereby both unweighted and weighted averages of these values as a summary index for poll accuracy. We then propose measures for significance testing, and run a series of simulations to assess possible bias from the resulting folded normal distribution across different sample sizes, finding that bias is small even for polls…
Structural insights into M2O-Al2O3-WO3 (M = Na, K) system by electron diffraction tomography.
2015
TheM2O–Al2O3–WO3(M= alkaline metals) system has attracted the attention of the scientific community because some of its members showed potential applications as single crystalline media for tunable solid-state lasers. These materials behave as promising laser host materials due to their high and continuous transparency in the wide range of the near-IR region. A systematic investigation of these phases is nonetheless hampered because it is impossible to produce large crystals and only in a few cases a pure synthetic product can be achieved. Despite substantial advances in X-ray powder diffraction methods, structure investigation on nanoscale is still challenging, especially when the sample i…
Proposal and validation of a novel quantitative approach (QUEM) for the evaluation of menstrual blood losses. Preliminary implementation for the mana…
2010
Menorrhagiaisaveryprevalentbleedingsymptomincongenitalbleedingdisorders(from60to100%)and in patients on OralAnticoagulants(OA),but no prospective studies are available. We here describe the validation of a new and simple method for determination of menstrual blòood losses
Control of matrix interferences by multiple linear regression models in the determination of arsenic and lead concentrations in fly ashes by inductiv…
2010
A multiple linear regression technique was used to evaluate and correct the matrix interferences in the determination of As and Pb concentrations in fly ashes by inductively coupled plasma optical emission spectrometry. The direct determination of As and Pb in SRM 1633b by ICP-OES failed to obtain the certified concentrations, except in a couple of cases. However, it proved possible to use the multiple linear regression (MLR) technique to correct the determined concentrations to a satisfactory level. This method of correction is based on the multiple regression line obtained from the analysis of 19 synthetic mixtures of matrix and analyte elements (Al, As, Ca, Fe, Pb, and Si) at five concen…
The Right to Food Sovereignty in International Law
2021
With the adoption of the UN Declaration on the Rights of Peasants and Other People Working in Rural Areas (UNDROP) in 2018, the right to food sovereignty was officially included in an international legal document for the first time. The concept of food sovereignty has been widely analyzed in sociology and politics, whilst it is rarely described in the legal context. This article aims to clarify the relationship among existing norms of international law such as the right to self-determination, the right to development and the right to adequate food with the right to food sovereignty. In order to clarify this relationship the article compares them with food sovereignty as described in the UND…
Molecular Basis for the Regulation of Cell Fate by the Lethal (2) Giant Larvae Tumour Suppressor Gene of Drosophila Melanogaster
2007
Tumour suppressor genes act as recessive determinants of cancer. Their function is required for normal cell growth and differentiation during development. When both alleles of these developmental genes are inactivated, cell growth becomes unrestricted. In Drosophila, a series of genes have been identified which when mutated produce tissue-specific tumours. Of these the lethal(2)giant larvae (l(2)gl) gene is the best studied. Homozygous l(2)gl mutations cause the development of malignant tumours in the brain and the imaginal discs. Genomic DNA from the l(2)gl locus has been cloned, introduced back into l(2)gl mutant animals by P-element-mediated transformation and shown to restore normal dev…