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Results 351 - 400 of 646
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Fitch Mark W - - 2002
A polysulfone microporous membrane module was investigated for control of 1-butanol-contaminated gas streams. A diurnal loading condition, using two different butanol concentrations, was used to simulate start-up and stop conditions associated with shift work. The membrane module was also used to remove 1-butanol from air under continuous loading conditions in ...
Muhonen Arja - - 2002
[18F-]fluoride positron-emission tomography (PET) was used to assess bone formation during mandibular distraction osteogenesis. There were three study groups: irradiation, irradiation+hyperbaric oxygen and control. The two experimental groups received a tumoricidal dose of irradiation to the mandible, and one group was also given hyperbaric oxygen (2.5 ATA (atmospheres absolute) for ...
Veeresh Mangala - - 2002
Influent and final effluent was collected from the CMM Ltd., Bethora, Ponda, Goa and were analysed for pH, DO, BOD, enzyme activity and chlorophyll content of the waste stabilization pond for over a period of two years of which the data for one year (pre monsoon, monsoon and post monsoon ...
Kakimoto K - - 2002
Hepatocyte growth factor (HGF), also known as scatter factor, is a broad-spectrum and multifunctional cytokine required for the development, growth and regeneration of various organs and tissues. The expression of HGF in human gingival fibroblasts is induced by inflammatory cytokines such as interleukin 1. Thus, although it is possible that ...
Sheridan B A - - 2002
Two pilot scale biofiltration systems were constructed and installed at the University College Dublin Research Farm, Lyons Estate. Experimental units consisting of two pens in a 12 pen pig house were sealed off from other pens. Air from each pen was extracted and treated separately in two biofiltration systems. Wood ...
Shapira D - - 2002
We have repeated the experiment of Taleyarkhan et al. [Science 295, 1868 (2002)]] in an attempt to detect the emission of neutrons from d-d fusion during bubble collapse in deuterated acetone. Using the same cavitation apparatus, a more sophisticated data acquisition system, and a larger scintillator detector, we find no ...
Chen Yen-Meng - - 2002
The antimicrobial properties of chitosan, a derivative of chitin, were investigated in the solid and liquid culture against bacteria associated with waterborne disease in order to assess the potential for using chitosan as a natural disinfectant. Six strains which included three gram-negative and three gram-positive bacteria were studied. The effects ...
Vichyanond Pakit - - 2002
INTRODUCTION: Conflicting results exist with regard to the efficacy of vacuum cleaners on the removal of mite allergens from bedding. OBJECTIVES: The authors prospectively compared a short term efficacy of two types of regular vacuum cleaners (National-N and Hoover-H) with a specialized cleaner (Vorwerk-V) in the removal of mite allergens ...
Jin L J - - 2002
OBJECTIVES: To determine the effect of scaling and root planing (SRP) on the interrelations of subgingival periodontopathogens and both interleukin-8 (IL-8) and granulocyte elastase activity in gingival crevicular fluid (GCF), and to assess their relations to the short-term treatment response in management of chronic periodontitis. MATERIAL AND METHODS: GCF and ...
Szymanski Andrzej - - 2002
Biodegradation of two alpha-methyl branched oxo-alcohol ethoxylates (OAE) of different polydispersity: LIAL 125/14 BRD (LIALB) (broad M.W. distribution) and LIAL 125/14 NRD (LIALN) (narrow M.W. distribution), both having an average of 14 oxyethylene subunits (EO) and a C(12-15) alkyl moiety were tested under the continuous flow activated sludge conditions of ...
Robinson J - - 2002
Douglas-fir ( Pseudotsuga menziesii) whitewood was supplemented with increasing concentrations of bark (0-30%) and was pretreated using SO(2)-catalysed steam explosion. The presence of bark in the feedstock resulted in the decreased recovery of total sugars, furfural and 5-hydroxymethylfurfural in the resultant pre-hydrolysate. No detrimental impact on monomer sugar recovery was ...
Taylor C C - - 2002
The production of antifungal compounds during fermentation could be a useful mechanism to improve the aerobic stability of fermented feeds when they are exposed to air. High moisture corn (26% moisture) was ground and inoculated with various amounts of Lactobacillus buchneri 40788, a heterolactic acid bacteria, and ensiled in laboratory ...
Amundsen I - - 2002
Measurements of samples taken from the close vicinity of the Kursk during two expeditions to the site in August and October 2000, indicate that no leakage of radionuclides from the reactors has been observed. Only background levels in the range 0.0-0.1 microSv/h have been measured by use of the remote ...
Pogue Brian W - - 2002
In this study, the vascular and tissue oxygen changes induced by photodynamic therapy in the RIF-1 tumor were examined, using electron paramagnetic resonance (EPR) oximetry. Two photosensitizers, including verteporfin (BPD-MA in a lipid-based formulation) and aminolevulinic acid-induced protoporphyrin IX (ALA-PPIX), were investigated with optical irradiation, sufficient to induce sub-curative damage ...
Lo C-K - - 2002
A testosterone (TS)-producing mutant, ST2, was derived from a phytosterol-assimilating and androst-4-ene-3,17-dione (AD)-producing bacterium, Mycobacterium sp. B-3805S, using nitrosoguanidine (NTG) mutagenesis. Production of TS from phytosterol using a single-step microbial transformation process by ST2 was investigated in a 5-l surface-aeration microprocessor-controlled fermentor loaded with a synthetic medium supplemented with 0.1% ...
Bischof Kai - - 2002
The effect of solar UV radiation on the physiology of the intertidal green macroalga Ulva lactuca L. was investigated. A natural Ulva community at the shore of Helgoland was covered with screening foils, excluding UV-B or UV-B + UV-A from the solar spectrum. In the sampled material, changes in the ...
Matsushita Taku - - 2002
In order to investigate changes in the mutagenicity of fenitrothion during its biodegradation in solution, measurements were conducted at intervals in batch cultures incubated under anaerobic or aerobic conditions. Fenitrothion-degrading bacteria were obtained from a green onion field on the west side of Gifu University, Japan. Fenitrothion was almost completely ...
Lie M A - - 2002
Persons who smoke display a less pronounced increase of gingival bleeding in the experimental gingivitis model as compared with non-smokers. The aim of the present study was to investigate whether this could partly be explained by differences in levels of parotid total secretory IgA (S-IgA) or parotid S-IgA reactive with ...
Ganguly S - - 2002
The population growth of some biogeochemical cycling bacteria (heterotrophic bacteria (HB), ammonifying bacteria (AB), ammonia oxidizing bacteria (AOB), denitrifying bacteria (DNB) and cellulose decomposing bacteria (CDB)), as well as ammonification, and denitrification rates were determined in simulated pond systems treated with full doses (FDs) and split doses (SDs) of cadmium. ...
Savvaidis Ioannis N - - 2002
The effect of gamma irradiation on the natural microflora of whole salted vacuum-packaged trout at 4 and 10 degrees C was studied. In addition, the effectiveness of gamma irradiation in controlling Listeria monocytogenes inoculated into trout was investigated. Irradiation at doses of 0.5 and 2 kGy affected populations of bacteria, ...
Mackin Lesley - - 2002
During the manufacture of tablets for registration stability studies, it was observed that blends manufactured using milled active frequently failed the blend content uniformity criteria (actual relative standard deviation (RSD) of 4-15%) at the prelubrication stage, whereas unmilled active batches were consistently giving very good blend uniformity results (RSD<3.5%). The ...
Kukleva Maria P - - 2002
AIM: The aim of this study was to establish the changes in the appearance of the surface and in the form of the carious spots in the treatment of acute initial caries with fluoride gel. MATERIAL AND METHODS: Clinical observation on 182 white carious spots in 27 children from 7 ...
Ballinger S J - - 2002
A laboratory scale reactor operated as a single sludge, denitrification-nitrification bioreactor (DNB), was fed a synthetic wastewater. The effect of the C/N ratio of the influent on the structure of beta-proteobacterial autotrophic ammonia-oxidizing bacterial (AOB) communities was determined by DGGE analysis of 16S rRNA gene fragments amplified using a range ...
Ujang Z - - 2002
A laboratory-scale membrane bioreactor (MBR) was fed with synthetic wastewater to investigate the possibility of simultaneous removal of organic, nitrogen and phosphorus by intermittent aeration. The MBR consists of two compartments using a microfiltration membrane with 0.2 microm pore size and a surface area of 0.35 m2. Hydraulic retention time ...
Jiménez B - - 2002
The parasites present in the residual sludge generate by the diverse treatment processes of residual water vary, depending on the socioeconomic and epidemiological conditions of different communities. And although data exist at the global level regarding the microbiological quality of sludge, these data are practically nonexistent in developing countries. Therefore, ...
Saint-Fort R - - 2002
This study was undertaken to provide a better understanding and to further define the stabilization processes involved in a typical municipal landfill representative of the city of Calgary, Canada, area. The objectives of this study were: (1) to characterize the composition of the solid waste constituents entering the landfill site, ...
Kesserü Péter - - 2002
Ochrobactrum anthropi is a well-known Gram-negative bacterium, with the ability to degrade atrazine, urea-formaldehyde and chlorophenols. Investigation were made of the nitrate and nitrite reduction capacities of the strain in succinate and glucose media, and the tolerance of its denitrification to NaCl and some heavy metals. Succinate proved to be ...
Chen Kuo-Cheng - - 2002
The performance of an immobilized-cell reactor for simultaneous carbon nitrogen removal in synthetic wastewater with an intermittent aeration (IA) process under real-time control of oxygen supply was investigated. The oxidation-reduction potential (ORP) was monitored during operation. The ORP-time profile showed distinctive turning points. which directly correlated with the changes in ...
Shiomi M - - 2001
We examined how lesional composition is related to the stability of coronary plaques. WHHL rabbits (12 months old) were given pravastatin and fluvastatin orally for 52 weeks. Both statins decreased plasma cholesterol levels by about 25%, but the suppressive effects on the degree of coronary plaques were mild. Macrophage (Mphi) ...
Karim K - - 2001
Four identical bench-scale upflow anaerobic sludge blanket (UASB) reactors, R1, R2, R3 and R4, were used to assess nitrophenols degradation at four different hydraulic retention times (HRT). Reactor R1 was used as control, whereas R2, R3, and R4 were fed with 2-nitrophenol (2-NP), 4-nitrophenol (4-NP), and 2,4-dinitrophenol (2,4-DNP), respectively. The ...
Bustard M T - - 2001
The aerobic biodegradation of high liquid phase concentrations of 2-propanol (IPA) by a previously enriched solvent-tolerant bacterial consortium within a 1.9 l fed-batch three phase fixed bed bioreactor was investigated. Solvent concentrations of up to 7.9 g l(-1) were investigated. Previously enriched solvent-tolerant bacterial cells were immobilised onto porous glass ...
Ul-Qader S A - - 2001
A newly isolated strain of Leuconostoc mesenteroides (PCSIR-3) produced a different dextran compared with that of L. mesenteroides NRRL B-512F. Different media compositions used for dextran production showed that media containing CaCl(2) produced dextran in higher quantities compared with other media. The viscosity of the dextran produced in different media ...
Henshaw P F - - 2001
The green sulphur bacterium Chlorobium thiosulfutophilum was used to remove hydrogen sulphide from synthetic industrial wastewater and convert it to elemental sulphur in a fixed-film continuous-flow photosynthetic bioreactor. Twenty 150 mm x 3 mm ID Tygon tubes formed the active part of the reactor resulting in a total volume of ...
Duggal M S - - 2001
There is little information in the literature on the relationship among the frequency of carbohydrate consumption, the use of fluoride toothpaste, and enamel demineralization. The aim of this investigation was to compare the extent of demineralization of enamel slabs in situ, with a sugar-based solution, consumed in constant amounts but ...
Merry A F - - 2001
After different methods of hand preparation, volunteers rolled segments of sterile central venous catheter between their fingertips, and bacterial transfer was evaluated by standardized quantitative culture. The number of bacteria transferred differed between methods (P<0.001). Comparisons were made with the control group (no preparation at all; median, third quartile and ...
Bershtein L M - - 2001
The effect of gamma-irradiation on the realization of the effects of estrogens was studied on rats treated with N-acetylcysteine, vitamins C and E, melatonin, and carnosine or subjected to forced swimming in a training mode. Irradiation (0.2 Gy) in combination with estrogens and without correction therapy induced genotoxic changes in ...
Manukovsky N S - - 2001
The feasibility of a two-stage bioconversion of inedible potato biomass into biohumus by oyster mushroom followed by worms was tested. As a raw material for biohumus production the inedible potato biomass in certain properties ranked below wheat straw. The most feasible method to convert the potato wastes into biohumus was ...
Laopaiboon L - - 2001
AIMS: To study the effect of the isothiazolone biocide (Kathon WT) on the performance of laboratory-scale rotating biological contactors (RBCs) and their component biofilms. METHODS AND RESULTS: Biofilms were established on the RBCs and then exposed to 0.7-15 p.p.m. isothiazolones. Young, 1-week-old, biofilms were found to attain treatment efficiency equal ...
Wijeyaratne S M - - 2001
BACKGROUND: The expression of cyclo-oxygenase (COX) 1 and 2 has been demonstrated in atherosclerotic arteries. In the present study this was correlated with symptoms arising from a carotid plaque. METHODS: Carotid plaques from 12 asymptomatic patients were compared with 11 plaques from patients who had had neurological symptoms within the ...
Weidlich P - - 2001
BACKGROUND: The aims of this investigation were to evaluate the pattern of supragingival plaque formation in the dentogingival area within 96 hours after abstinence from mechanical plaque control and to clinically analyze the gingival inflammatory response observed. METHODS: Six male volunteers, 20 to 23 years of age, had their upper ...
Lyew D - - 2001
Measurements of electrical conductivity were obtained during treatment of acid mine drainage (AMD) by sulphate-reducing bacteria (SRB) in fed-batch column reactors. The advantages of this method are that it is non-invasive, non-destructive, and rapid, giving real-time information. Conductivity measurements were taken on an hourly basis throughout the course of several ...
Stroot P G - - 2001
The feasibility of codigestion of the organic fraction of municipal solid waste, primary sludge, and waste activated sludge was evaluated in mesophilic (37 degrees C), laboratory-scale digesters. In a first experiment, different startup strategies were compared using four digesters, operated under continuously mixed conditions. After two weeks, the experiment was ...
Watson R E RE - - 2001
The Marshland Upwelling System (MUS), a potential alternative wastewater treatment strategy for coastal dwellings, was examined to assess its ability to remove fecal coliforms (FC) from domestic wastewater as a step towards total treatment. Wastewater was intermittently injected down a 4.6-m injection well into the surrounding salt marsh. Optimal performance ...
Suriyaphan O - - 2001
Aroma components responsible for aroma typical of British Farmhouse Cheddar cheese were studied by aroma extract dilution analysis. Cheese extracts were prepared by direct solvent extraction, high-vacuum transfer, and class fractionation. Most aroma-active components of acidic and neutral/basic fractions have been previously associated with Cheddar cheese flavor. p-Cresol was mainly ...
Mendoza-Espinosa L G - - 2001
The performance of a biological aerated filter (BAF) during short-term (60 min) organic and hydraulic shock loads was investigated. The BAF used for the present experiment was not capable of absorbing high peak organic shock loads when the organic loads were increased from a normal load of 1.2-1.4 kg soluble ...
Erkmen O - - 2001
Listeria monocytogenes was enumerated during the manufacture and ripening of Turkish White cheese with particular reference to a) pasteurized milk, b) cheese milk after inoculation with L. monocytogenes (0 h), c) after curd formation (2 h), d) curd after pressing (6 h), e) curd after pH was reduced (17 h), ...
Braga G U - - 2001
We tested the effects of irradiances of 920 and 1200 mW m-2 (weighted irradiance) on the conidia and germinants of the entomopathogenic Hyphomycete Metarhizium anisopliae. The conidia were exposed to the two irradiances for 1, 2, 4, 6, 7 or 8 h. Increased exposure decreased relative percent culturability. The inactivation ...
Gerlach R W - - 2001
Changing and whitening tooth color in people with long-standing tooth stain without excessive hard tissue abrasion may represent one of the more difficult challenges for whitening dentifrices. An eight-week clinical trial was conducted to evaluate change in tooth color by a silica-based, enamel-safe tartar control whitening dentifrice compared to a ...
Yu H - - 2001
This study demonstrated that, during the two-step biodegradation of toluene in an aerobic circulating-bed biofilm reactor, biofilm and suspended bacteria played critical roles. Although the suspended bacteria were less than 1% of the total amount of biomass in the system, they transformed up to 30% of the toluene into its ...
Rozenberg G I - - 2001
The paper shows the ability of the fluorochrome tris(2,2'-bipyridine) ruthenium (II) (Rubipy) to detect heparan sulfate, heparin, and heparinase activity of M3 murine mammary adenocarcinoma cells as well as bacterial heparinases I, II, and III in native polyacrylamide gel electrophoresis (PAGE). The technique is based on the electrophoretic mobility of ...
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