scholarly journals Quality analysis of the preanalytical phase of laboratory tests: Case of the civil hospital (TetouanMorocco)

2017 ◽  
Vol 8 (1) ◽  
pp. 1-7
Author(s):  
Wafa Chemao-Elfihri ◽  
M. Moussaoui ◽  
K. Firsiwi ◽  
B. Jbari ◽  
Morhit M. El
Keyword(s):  
Laboratory Tests ◽  
Quality Analysis ◽  
Civil Hospital ◽  
Preanalytical Phase

Non-destructive ultrasonic method of testing the strength of backfill concrete at deep Talnakh mines

2020 ◽  
pp. 28-33
Author(s):  
A. V. Trofimov ◽  
◽  
A. E. Rumyantsev ◽  
A. P. Gospodarikov ◽  
A. P. Kirkin ◽  
...  
Keyword(s):  
Laboratory Tests ◽  
Underground Mining ◽  
Ultrasonic Method ◽  
Acoustic Method ◽  
Propagation Rate ◽  
Acoustic Properties ◽  
Quality Analysis ◽  
Transverse Waves ◽  
Longitudinal And Transverse Waves ◽  
Mechanical Methods

In underground mining with backfilling of mined-out areas, it is necessary to analyze the filling mass quality. Since coring and testing would make a complex process, the method of express analysis comes in handy. As the mechanical methods of express quality analysis are not very accurate, the best option would be to use an acoustic method. But before the latter can be used, it is necessary to conduct a series of laboratory tests in order to under stand the empirical correlation between strength and acoustic pro perties. This paper describes the results of laboratory tests that were carried out for samples of backfill concrete after 7, 28, 45, 70, 90 days of curing to test their strength and acoustic properties. A correlation has been found between the uniaxial compressive strength of the fill and the ultrasonic wave propagation rates. Some field measurements have been taken to determine the propagation rates of longitudinal and transverse waves in the filling mass. Calibration curves have been built for both longitudinal and transverse waves. It was established that for the filling mass that hasn’t cured for 90 days it is the propagation rate of transverse waves that correlates most accurately with the strength; whereas for the filling mass that is older than 90 days it is the propagation rate of longitudinal waves.

scholarly journals Impact of an Andean breakfast on biochemistry and immunochemistry laboratory tests: an evaluation on behalf COLABIOCLI WG-PRE-LATAM

2019 ◽  
Vol 29 (2) ◽  
pp. 302-314 ◽  
Author(s):  
Wilson Bajaña ◽  
Marise Danielle Campelo ◽  
Gabriel Lima-Oliveira ◽  
Beatriz Varela ◽  
Veronica Vega ◽  
...  
Keyword(s):  
Latin America ◽  
Laboratory Tests ◽  
Thyroid Stimulating Hormone ◽  
Laboratory Errors ◽  
Preanalytical Phase ◽  
Calcium Phosphorus ◽  
Andean Countries ◽  
Blood Specimens ◽  
Preanalytical Variability ◽  
Spurious Results

Introduction: In Andean countries, specifically in Ecuador, a food transition in the population has been observed because of economic growth. The Working Group for Preanalytical Phase in Latin America (WG-PRE-LATAM) of the Latin America Confederation of Clinical Biochemistry (COLABIOCLI) was established in 2017, and its main purpose is to study preanalytical variability and establish guidelines for preanalytical procedures in order to be implemented by clinical laboratories and healthcare professionals in Latin America. The aim of this study on behalf of COLABIOCLI WG-PRE-LATAM was to evaluate whether an Andean breakfast can interfere with routine biochemistry and immunochemistry laboratory tests. Materials and methods: We studied 20 healthy volunteers who consumed an Andean breakfast containing a standardized amount of carbohydrates, proteins and lipids. We collected blood specimens for laboratory tests before breakfast and 1, 2, and 4 hours thereafter. Significant differences between samples were assessed by the Wilcoxon ranked-pairs test. Results: The Andean breakfast statistically (P ≤ 0.05), modified the results of the following tests: triglycerides, insulin, cortisol, thyroid stimulating hormone, free thyroxine, total protein, albumin, urea, creatinine, lactate dehydrogenase, alkaline phosphatase, amylase, lipase, total bilirubin, direct bilirubin, iron, calcium, phosphorus, magnesium, and uric acid. Conclusions: Andean breakfast can influence the routine biochemistry and immunochemistry laboratory tests and might expose patient safety to some risks. Therefore, the COLABIOCLI WG-PRE-LATAM calls attention and highlights that the fasting time needs to be carefully considered when performing blood testing in order to prevent spurious results and thus, reduce laboratory errors.

scholarly journals Water Quality Based on Chemical Physics Parameters in Daruba Morotai Island Regency

2020 ◽  
Vol 13 (2) ◽  
pp. 413
Author(s):  
Vicky Rizky A. Katili ◽  
Kismanto Koroy ◽  
Mujais Lukman
Keyword(s):  
Water Quality ◽  
Laboratory Tests ◽  
Quality Standards ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Quality Analysis ◽  
Marine Biota ◽  
Chemical Physics ◽  
Water Quality Standards

Water quality generally indicates the quality or condition of water associated with a particular activity or need.  The influx of organic and inorganic pollution into Daruba waters can cause the water quality meets degradation of biological of function. This reseach aimed to determine the quality analysis of the waters of the Daruba. Sampling was carried out in September to oktober 2020 across five reseach stations,then the result of laboratory of water quality parameters were carried out descriptive. The result measurements and laboratory tests of chemical physics parameters show the condition of Daruba waters based on water quality standards on KEPMEN-LH No. 51 Tahun 2004, most of which have exceeded the water quality standards for marine biota.

Critical limb ischaemia in diabetes: definition, assessment, prognosis

VASA ◽  
2001 ◽  
Vol 30 (Supplement 58) ◽  
pp. 21-27
Author(s):  
Luther
Keyword(s):  
Diabetic Foot ◽  
Laboratory Tests ◽  
Critical Limb Ischaemia ◽  
Limb Ischaemia ◽  
Clinical Use ◽  
Arterial Reconstruction ◽  
Arterial Circulation ◽  
Diabetic Foot Disease ◽  
Foot Disease ◽  
Fontaine Classification

In diabetic foot disease, critical limb ischaemia (CLI) cannot be precisely described using established definitions. For clinical use, the Fontaine classification complemented with any objective verification of a reduced arterial circulation is sufficient for decision making. For scientific purposes, objective measurement criteria should be reported. Assessment of CLI should rely on the physical examination of the limb arteries, complemented by laboratory tests like the shape of the PVR curve at ankle or toe levels, and arteriography. The prognosis of CLI in diabetic foot disease depends on the success of arterial reconstruction. The best prognosis for the patients is with a preserved limb. Reconstructive surgery is the best choice for the majority of patients.

The Reliability of Retrieval-Induced Forgetting

2012 ◽  
Vol 17 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Rosalind Potts ◽  
Robin Law ◽  
John F. Golding ◽  
David Groome
Keyword(s):  
Individual Differences ◽  
Recognition Test ◽  
Laboratory Tests ◽  
The Other ◽  
Clinical Factors ◽  
Test Items ◽  
T1 And T2 ◽  
Test Materials ◽  
Induced Forgetting

Retrieval-induced forgetting (RIF) refers to the finding that the retrieval of an item from memory impairs the retrieval of related items. The extent to which this impairment is found in laboratory tests varies between individuals, and recent studies have reported an association between individual differences in the strength of the RIF effect and other cognitive and clinical factors. The present study investigated the reliability of these individual differences in the RIF effect. A RIF task was administered to the same individuals on two occasions (sessions T1 and T2), one week apart. For Experiments 1 and 2 the final retrieval test at each session made use of a category-cue procedure, whereas Experiment 3 employed category-plus-letter cues, and Experiment 4 used a recognition test. In Experiment 2 the same test items that were studied, practiced, and tested at T1 were also studied, practiced, and tested at T2, but for the remaining three experiments two different item sets were used at T1 and T2. A significant RIF effect was found in all four experiments. A significant correlation was found between RIF scores at T1 and T2 in Experiment 2, but for the other three experiments the correlations between RIF scores at T1 and T2 failed to reach significance. This study therefore failed to find clear evidence for reliable individual differences in RIF performance, except where the same test materials were used for both test sessions. These findings have important implications for studies involving individual differences in RIF performance.

Reliability of Laboratory Tests for the Control of Oral Anticoagulation

1974 ◽  
Vol 32 (02/03) ◽  
pp. 483-491
Author(s):  
E. A Loeliger ◽  
M. J Boekhout-Mussert ◽  
L. P van Halem-Visser ◽  
J. D. E Habbema ◽  
H de Jonge
Keyword(s):  
Human Brain ◽  
Laboratory Tests ◽  
Test Procedure ◽  
Rabbit Brain ◽  
Normal Range ◽  
Test Procedures ◽  
Discrimination Power ◽  
Power Of The Test ◽  
Assay Procedure ◽  
Low Sensitivity

SummaryThe present study concerned the reproducibility of the so-called prothrombin time as assessed with a series of more commonly used modifications of the Quick’s onestage assay procedure, i.e. the British comparative reagent, homemade human brain thromboplastin, Simplastin, Simplastin A, and Thrombotest. All five procedures were tested manually on pooled lyophilized normal and patients’ plasmas. In addition, Simplastin A and Thrombotest were investigated semiautomatically on individual freshly prepared patients’ plasmas. From the results obtained, the following conclusions may be drawn :The reproducibility of results obtained with manual reading on lyophilized plasmas is satisfactory for all five test procedures. For Simplastin, the reproducibility of values in the range of insufficient anticoagulation is relatively low due to the low discrimination power of the test procedure in the near-normal range (so-called low sensitivity of rabbit brain thromboplastins). The reproducibility of Thrombotest excels as a consequence of its particularly easily discerned coagulation endpoint.The reproducibility of Thrombotest, when tested on freshly prepared plasmas using Schnitger’s semiautomatic coagulometer (a fibrinometer-liJce apparatus), is no longer superior to that of Simplastin A.The constant of proportionality between the coagulation times formed with Simplastin A and Thrombotest was estimated at 0.64.Reconstituted Thrombotest is stable for 24 hours when stored at 4° C, whereas reconstituted Simplastin A is not.The Simplastin A method and Thrombotest seem to be equally sensitive to “activation” of blood coagulation upon storage.

Rapid Screening Methods for Bleeding Disorders. A Three Year Survey

1964 ◽  
Vol 11 (02) ◽  
pp. 506-512 ◽  
Author(s):  
V. A Lovric ◽  
J Margolis
Keyword(s):  
Laboratory Tests ◽  
Capillary Blood ◽  
Screening Tests ◽  
Rapid Screening ◽  
Screening Methods ◽  
Bleeding Disorders ◽  
Routine Laboratory ◽  
Clotting Time ◽  
Kaolin Clotting Time ◽  
In Infants And Children

SummaryAn adaptation of “kaolin clotting time” and prothrombin time for use on haemolysed capillary blood provided simple and sensitive screening tests suitable for use in infants and children. A survey of three year’s experience shows that these are reliable routine laboratory tests for detection of latent coagulation disorders.

Comparison of Thrombelastography with Common Coagulation Tests

1981 ◽  
Vol 46 (04) ◽  
pp. 752-756 ◽  
Author(s):  
L Zuckerman ◽  
E Cohen ◽  
J P Vagher ◽  
E Woodward ◽  
J A Caprini
Keyword(s):  
Laboratory Tests ◽  
Clinical Utility ◽  
Blood Clotting ◽  
Strong Relationship ◽  
Relative Strength ◽  
Additional Information ◽  
Patients With Cancer ◽  
Two Samples ◽  
Coagulation Tests ◽  
Common Laboratory

SummaryThrombelastography, although proven as a useful research tool has not been evaluated for its clinical utility against common coagulation laboratory tests. In this study we compare the thrombelastographic measurements with six common tests (the hematocrit, platelet count, fibrinogen, prothrombin time, activated thromboplastin time and fibrin split products). For such comparisons, two samples of subjects were selected, 141 normal volunteers and 121 patients with cancer. The data was subjected to various statistical techniques such as correlation, ANOVA, canonical and discriminant analysis to measure the extent of the correlations between the two sets of variables and their relative strength to detect blood clotting abnormalities. The results indicate that, although there is a strong relationship between the thrombelastographic variables and these common laboratory tests, the thrombelastographic variables contain additional information on the hemostatic process.

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