Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 170 for “"Urine samples"”.
-
Quantitative analysis of co-enzyme a in a plant tissues and cancer biomarkers in urine samples by using capillary electrophoresis and liquid chromatography-mass spectrometry
… method to detect CoA compounds in biological samples in order to study it as a cofactor.</p> <p>The valuable characteristics of capillary electrophoresis (CE), such as rapid analysis, high separation efficiency and minimal consumption of sample and buffer solutions, make it a unique analytical …
-
Quantification of pyrethroid and organophosphate metabolites in hair and urine samples of rural children from the Western Cape, South Africa using the two-dimensional gas chromatography-mass spectrometry
… these compounds in complex biological samples. This study evaluated a two-dimensional gas chromatography coupled with a time-of-flight mass spectrometry (2-D GCxGC TOF/MS) based method, specifically designed for analysis of compounds in complex matrices such as urine and hair matrices. …
-
Factors affecting estrogen excretion in dairy heifers
… was to quantify estrogenic activity in feces and urine during the estrous cycle. Ten non-pregnant Holstein heifers were fed the same diet for 28 d. Plasma, feces, and urine samples were collected daily. Plasma 17-β estradiol (17-β E2) was quantified with RIA and used to confirm day of estrous. …
-
Use of nanoemulsion liquid chromatography (NELC) for the analysis of inhaled drugs. Investigation into the application of oil-in-water nanoemulsion as mobile phase for determination of inhaled drugs in dosage forms and in clinical samples.
… of terbutaline and salbutamol in aqueous and urine samples. An oil-in-water (O/W) NELC method was developed and validated for the determination of formoterol in an Oxis® Turbuhaler® using pre-column fluorescence derivatisation. Although the same mobile phase was extended for separation of …
-
ΣΥΜΒΟΛΗ ΣΤΗ ΜΕΛΕΤΗ ΤΟΥ ΜΕΤΑΒΟΛΙΣΜΟΥ ΤΟΥ ΟΣΤΙΚΟΥ ΚΟΛΛΑΓΟΝΟΥ ΚΑΙ ΤΗΣ ΟΣΤΙΚΗΣ ΕΝΑΛΛΑΓΗΣ ΣΤΗ V.COOLEY ΔΙΑ ΤΟΥ ΠΡΟΣΔΙΟΡΙΣΜΟΥ ΤΗΣ ΥΔΡΟΞΥΠΡΟΛΙΝΗΣ ΟΥΡΩΝ
… OF TOTAL HYDROXYPROLINE EXCRETED IN 24 HR/M2 URINE SAMPLES WAS MEASURED. THE SUBJECTS WERE PATIENTS STRICKEN WITH COOLEY'S ANEMIA (THALASSEMIA MAJOR). EACH SHOWED THE CHARACTERISTIC BONE CHANGES KNOWN AS OSTEOPOROSIS . THE PURPOSE OF THIS STUDY WAS TO RESEARCH THE METABOLISM OF BONECOLLAGEN …
-
An investigation of Arsenic in biological samples from unexposed volunteers in the UK
… the analysis of arsenic (As) in human biological samples, mainly urine but also hair and fingernails using inductively coupled plasma mass spectrometry (ICP-MS) and graphite furnace atomic absorption spectrometry (GF-AAS). The relationship between ethnicity and arsenic metabolism was investigated …
-
Evaluation of non-invasive biomarkers for carcinogenic exposure to cigarette smoke
… + 6 males in each group), provided multiple urine samples. Urine samples from psoriasis patients undergoing coal tar therapy were also obtained. Urinary BaPT and 1-OHPG levels were assayed.;Results. While BaPT levels ranged from undetectable to 11 pmol/10ml in psoriasis patients (mean = 4 …
-
Comparison of Positive Screening and Confimatory Results From Federally Mandated Drug Testing of Urine
… immunoassays for the detection of drug positive urine samples.</p> <p>Federal civilian employees are tested under the strict protocol of the Department of Health and Human Services mandatory guidelines for federal workplace drug testing programs. The guidelines provide for a two instrument …
-
Comparison of Extraction Techniques for Δ-9-Tetrahydrocannabinol from Urine
… methods to extract and detect Δ-9-THC in urine samples and relate the concentrations found to time is a necessity so that impairment can be determined. Δ-9-THC is conjugated to glucuronic acid in urine and must be freed before the compound can be detected by chromatographic procedures. In …
-
Detection of staphylococcal enterotoxins in patients with rheumatoid arthritis or closed fracture
… mass spectrometry method to analyse and compare urine samples from patients with rheumatoid arthritis (RA) and orthopaedic fracture patients for the presence of Staphylococcus aureus. Background: RA is a disease of unknown etiology; with a pathogenesis that is due to a mixture of genetic, …
-
Diagnostic Accuracy of Nucleic Acid Amplification Tests in Urine for Pulmonary Tuberculosis: A Meta-Analysis
… nucleic acid amplification tests (NAATs) in urine samples for active pulmonary tuberculosis (PTB). <bold>Design:</bold> Systematic review and meta-analysis. Electronic databases and reference lists were searched without language, setting or time restriction. Eligible articles examined …
-
Assay procedures for dehydroepiandrosterone
… by the adrenal cortex and is excreted in the urine as DHEAsulfate, In diseases of the adrenal cortex, such as adrenal carcinoma or adrenal hyperactivity, the level of DHEA-sulfate in the urine is increased. There are two standard methods currently in use in the clinical laboratory to determine …
-
Noninvasive quantification of drug delivery from an implantable MEMS device
… real time and corroborated by scintillation of urine samples. The goal of monitoring drug delivery from an implant in vivo, in real time and without disturbing the tissue environment, was accomplished. The results described in this thesis suggest a number of future studies including …
-
Comparison of Liquid-Liquid Extraction and Solid Phase Extraction of Mephedrone
… and which was more efficient. Synthetic urine samples were spiked with mephedrone, extracted using both methods, and analyzed with GC-MS. Spiked synthetic urine samples were also analyzed to determine the limit of detection for mephedrone. A T-ratio test determined that there is less than …
-
Biomarkers in the measurement of hepatic damage in sheep
The measurement of urinary taurine and the liver specific enzymes AST and GGT in sheep with hepatic damage was undertaken to determine if urinary taurine could be used as a biomarker of hepatic damage. Two treatment groups (n = 5) were treated with O.125ml/Kg BW of carbon tetrachloride (CCl₄) …
-
Screening and Engineering Phenotypes using Big Data Systems Biology
… Raman-based urinalysis was performed on clinical urine samples using RametrixTM software. RametrixTM has been previously developed and employed to other urinalysis applications, but this study was the first instance of applying this new technology to bladder cancer screening. Using a pool of 17 …
-
Liquid Crystal Mediated Bioassay for Protein Detection
Detecting human serum albumin (HSA) in urine samples is a standard procedure for diagnosis of kidney problems and prognosis of patients with chronic kidney diseases (CKDs). This PhD work developed a HSA assay by incorporating a thin layer of liquid crystals (LCs) as a readout system such that the …
-
Investigation of biomarkers for noninvasive early diagnosis of cancer
… levels of certain metabolites present in human urine can indicate the current or future behavior of cancer. Therefore, these studies focused on metabolomics biomarker analysis in urine. Eight pteridine molecules were analyzed using a house-built, high-performance capillary electrophoresis with …
Page 1 of 9