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 65 for “"filter paper"”.
-
The determination of log-time mortality curves of the various life stages of (Hypera postica) subjected to certain insecticides
… activity. Each insecticide was impregnated in filter paper at the dosage of 100 micrograms per square centimeter of filter paper surface. The insects were introduced on to the filter paper for continuous exposure to the insecticide residue. Mortality and certain other effects were recorded …
-
Crystal seeding for the control of sludge properties
… the effect of certain variables on the filterability of calcium sulfate sludge resulting from lime neutralization of synthetic, return sludge seeded, sulfuric acid samples, The variables investigated were rate of mixing, rate of lime addition, degree of neutralization, return sludge …
-
Hydroxypropylmethylcellulose: A New Matrix for Solid-Surface Room-Temperature Phosphorimetry
… high background phosphorescence originating from filter paper substrates can interfere with the detection and quantitation of trace-level analytes. High-purity grades of HPMC were investigated as SSRTP substrates in an attempt to overcome this limitation. When compared directly to filter paper, …
-
Dried spot cards to analyse biologic fluids for diagnostic investigation of patients
… of these biologic fluids and drying them on filter paper can lower the cost of transporting the sample to the laboratory, avoid instability of the matrix, and degradation of the analytes. Aim: The aim of this project was to develop an inexpensive, convenient, comprehensive and reproducible …
-
A comparison of different methods of determination of amino acid profiles in mammalian tissues: a study of teratogenic effects of vigabatrin and alcohol
… a new micro-capillary method, a standard filter paper technique and the standard venous blood methodl In addition, the project investigated the teratogenic effects of the AED, vigabatrin (VGB) and acute alcohol administration on amino acid metabolism in maternal blood, placenta and embryo …
-
Investigations of Colorado potato beetle [Leptinotarsa decemlineata (Say)] pest management including: sampling strategies for insecticide resistance detection, development of a knowledge-based expert system and the physiology of cold tolerance
… beetle, Leptinotarsa decemlineata (Say), in a filter-paper insecticide bioassay was determined in three Virginia potato fields in 1989 and five fields in 1990. Bioassays were performed for each of three different insecticides on Colorado potato beetle larvae collected from 12-16 different …
-
ANALYSIS OF ANIONS AND PROTEINS RELATED TO OXALATE METABOLISM IN HUMAN ERYTHROCYTES
… diagnostic assay called Dried Blood Spot Filter Paper Assay the detection of Primary Hyperoxaluria Type 2 (PH2), a disease characterized by the dysfunction of GR/HPR. GR/HPR activity was detected in erythrocytes at levels similar other blood components such as blood mononuclear cells. …
-
Chromatographic Fractionation of the Hydrous Oxide Ions
… that, when aqueous solutions rise in strips of filter paper, the water precedes the dissolved material, and the relative height of ascent of solutes can differ enough to make it possible to detect the co—solutes in separate zones. He called this hew phenomenon "capillary analysis" and predicted …
-
Modular design of biological systems
… Å resolution map for SbpA. I created a cells-on-paper system to compose, isolate, and subsequently destack and examine different cell types grown in sheets of ordinary filter paper and maintained in a humidified incubation chamber. I found that E coli diluted in LB broth and then applied to …
-
A greenhouse screening method for resistance to gray leaf spot in maize
… states. A new greenhouse assay method with filter paper discs of C. zeaemaydis mycelia has been developed to evaluate corn germplasm for resistance to GLS. Mycelial inoculum obtained from cultures of mycelia in liquid malt media was pipetted at 100 ul samples onto each filter paper disc …
-
Sublethal effects of carbofuran and methidathion on reduviolus americoferus (carayon) (Hemiptera: Nabidae)
… 2-day-old adult nabids were exposed for 12 h to filter paper treated with LC₅ or LC₄₅ carbofuran, or LC₅ or LC₂₅ methidathion. Males that survived the 4-day acute mortality period lived only 60 percent as long as control males, with low and high concentrations of insecticides producing similar …
-
Rapid identification, confirmation, and quantitation using an open-air ion source coupled to a time-of-flight mass spectrometer
… elemental composition of an unknown captured on filter paper was identified as dipropylene glycol (DPG) analyzed directly from the surface of the filter paper. Data from in-source CAD and H/D exchange of both the unknown and authentic standards confirmed that the unknown was DPG. The …
-
The Influence of Tail Autotomy on Avoidance of Chemical Alarm Cues in Northern Zigzag Salamanders, Plethodon dorsalis
… dishes with a choice between treated substrate (filter paper treated with chemical cues) or untreated substrate (filter paper treated with distilled water). After a period of habituation, the salamander locations within the dishes were recorded every 3 minutes for 60 minutes. The dishes where …
-
Examining relationships of taste sensitivity and body fat percentage using body adiposity index
… food dye exam (Miller & Reedy, 1990) and the filter paper method (Zhao, Kirkmeyer, & Tepper, 2003) using the general Labeled Magnitude Scale (Bartoshuk et al., 2004) among student participants (n = 75). It was hypothesized that supertasters would have a lower BAI than non-tasters and medium …
-
DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER
… BCD onto different supports such as silica, filter paper, iron oxide, and zeolite, b) to perform batch and column experiments using the developed adsorbents, c) to evaluate the performance of the adsorbents in different water matrices such as MQ water, simulated wastewater in presence of …
-
Real time, integrated, paper based temperature sensor for lab on a chip device
… free fabrication of the temperature sensor using filter paper impregnated with p-type colloidal PbS quantum dots is demonstrated. This sensor is later integrated into line a PDMS microfluidic device with two parallel microfluidic channels. The integrated device is chiefly to sense the difference …
-
Evaluation of conditions for quantitative recovery of a drug from animal feed using supercritical fluid CO₂ extraction
… implemented the extraction of xenalipin from a filter paper matrix and the use of solid phase traps. This method of inquiry was use to evaluate the degree of recovery as related to the parameters of CO₂ density, extraction time, and flow rates of CO₂. After achieving quantitative extraction of …
-
The Identification and Comparison of the Flavonoids in the Flowers of Campanula Rapunculoides L. and Campanula Americana L.
… and concentrated on a rotary vacuum evaporator. Filter paper chromatography was used to separate and purify the pigments. Both crude and purified pigments were hydrolyzed and tests run to gain information about the aglycones and attached sugars. A spectrophotometer was used to record the …
-
Coliforms, Salmonella, and Shigella in the James River Basin
… A portion of each sample was concentrated onto filter paper and enriched overnight in GNTSB. Molecular methods were used for the detection of Salmonella and Shigella. Biochemical tests were used to identify the non-lactose-fermenting enteric bacteria and evaluate which lactose non-fermenting …
-
Simplified real-time PAH measurement techniques
… (MTS), that collects particulate samples on filter paper tape and uses sensitized flourescence to measure total PAH on the tape. The MTS results are compared to the results of a conventional PAH measurement technique, but no definite relationship between the two is found. Uncertainties about …
Page 1 of 4