Archive for the ‘for26cat’ Category
Saturday, June 28th, 2008
Should we still offer split-liver transplantation for two adult recipients? A retrospective study of our experience.
The role of split-liver transplantation (SLT) for two adult recipients is still a matter of debate, and no agreement exists on indications, surgical techniques, and results. The aim of this ...
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Saturday, June 28th, 2008
Ischemic preconditioning and intermittent clamping confer protection against ischemic injury in the cirrhotic mouse liver.
Surgery on cirrhotic livers is fraught with complications, and many surgeons refrain from operating on patients with cirrhosis. Surgical procedures include temporal occlusion of blood flow resulting in ischemia. The mechanisms ...
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Saturday, June 28th, 2008
Enzymatic hydrolysis of beer brewers\' spent grain and the influence of pretreatments.
The enzymatic saccharification of plant material has been shown to be of interest in various fields, such as the production of fruit juices(1,2) and the utilization of biomass.(3) A combination of cellulase, pectinase, and ...
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Saturday, June 28th, 2008
Kinetic study and mathematical modeling of methanogenesis of acetate using pure cultures of methanogens.
Kinetics of methanogenesis from acetate was studied using pure cultures of Methanosarcina barkeri and Methanosarcina mazei. Methane formation was found to be associated with cell growth. Nearly equimolar methane was produced from ...
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Saturday, June 28th, 2008
Calorimetric investigation of aerobic fermentations.
A modified bench scale calorimeter has been employed to determine the heat generated by various microbial strains growing on a range of different substrates, covering degrees of reduction from 3 to 6.13. The results are analyzed, and interpreted in the light ...
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Saturday, June 28th, 2008
The modeling and analysis of the elution stage of biospecific adsorption in fixed beds.
A mathematical model that describes the dynamic behavior of the elution stage of biospecific adsorption (affinity chromatography) in a fixed bed is developed and solved. Both non-selective and selective elution methods are ...
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Saturday, June 28th, 2008
Continuous-culture studies of synthesis and regulation of extracellular beta(1-3) glucanase and protease enzymes from Oerskovia xanthineolytica.
This article describes the synthesis and regulation of beta(1-3)glucanase and protease enzymes from the cell lytic system of Oerskovia xanthineolytica LL-G109 in continuous culture using different concentrations of carbon source ...
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Saturday, June 28th, 2008
Novel cationic triazine dyes for protein purification.
The effectiveness of a new immobilized cationic triazine dye was investigated alongside two new amphoteric triazine dyes and two well known anionic triazine dyes, Procion Red H-3B and Procion Blue H-B, as chromatographic media for binding four familiar proteases-trypsin, ...
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Saturday, June 28th, 2008
Factors affecting biomass attachment during startup and operation of anaerobic fluidized beds.
Three anaerobic fluidized bed reactors at 37 degrees C were utilized to observe the effects of startup and operational procedures on biomass attachment. Using a meat-based synthetic waste and stepped-loading regime, the influences of ...
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Saturday, June 28th, 2008
Vanadium containing bromoperoxidase: An example of an oxidoreductase with high operational stability in aqueous and organic media.
The conversion is described of phenolsulphonephtalein (phenol red) to 3,3\',5,5\'-tetrabromophenolsulphonephthalein (bromophenol blue) by bromoper-oxidase from the brown alga Ascophyllum nodosum. This reaction provides a convenient assay for the detection ...
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Saturday, June 28th, 2008
Species selection in a reactor-settler system.
The competition between flocculating and nonflocculating microorganisms was investigated in a continuous reactor-settler system (e.g. activated sludge). Co existence states were found to be possible, over a certain domain of operating conditions, even with simple monotonic kinetics and simple competition. ...
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Saturday, June 28th, 2008
Ionic binding of biologically active proteins on cross-linked acrylic macromolecular supports.
The immobilization process of some biologically active proteins on acrylic ion exchange supports was studied. The cross-linking and swelling coefficient, as well as the molecular weight of the enzyme, were proved to influence the immobilization ...
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Saturday, June 28th, 2008
The current clinical management of Huntington\'s disease.
Huntington\'s disease is a neurodegenerative condition, characterized by movement disorders, cognitive decline, and psychiatric disturbance. We review the pharmacological management of the various movement disorders associated with the disease, the cognitive decline and the commonly encountered behavioral disturbances. We ...
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Saturday, June 28th, 2008
Flavonoid glucuronides with anti-leukaemic activity from Polygonum amphibium L.
Introduction - The chemical and pharmaceutical studies carried out on species from Polygonum L. genus showed biological activity both of the extracts and the components isolated from them. These results were the impulse to examine Polygonum amphibium ...
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Saturday, June 28th, 2008
Long-term health-related quality of life following surgery for oesophageal cancer.
BACKGROUND:: The aim of the study was to assess health-related quality of life (HRQL) in patients with surgically cured oesophageal cancer. METHODS:: A Swedish nationwide cohort of patients undergoing oesophagectomy for cancer between April 2001 and ...
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Saturday, June 28th, 2008
Predictors of return to work following carotid endarterectomy.
BACKGROUND:: Carotid endarterectomy (CEA) is an important part of secondary prevention in selected patients following a transient ischaemic attack or stroke. A key marker of success, return to work following surgery, was assessed in a retrospective cohort study. ...
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Saturday, June 28th, 2008
Economic evaluation of sacral nerve stimulation for faecal incontinence.
BACKGROUND:: Sacral nerve stimulation (SNS) is an established treatment for faecal incontinence in patients who have failed conservative management. This study established the cost-effectiveness of treating patients with SNS compared with non-surgical treatment. METHODS:: A decision analysis ...
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Saturday, June 28th, 2008
Risk factors for development of desmoid tumours in familial adenomatous polyposis.
BACKGROUND:: Desmoid tumours (DTs) are the primary cause of death of patients with familial adenomatous polyposis (FAP) following restorative proctocolectomy. The aim of this study was to identify risk factors for DT in a French ...
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Saturday, June 28th, 2008
Growth of free and attached Thiobacillus ferrooxidans in ore suspension.
The growth of Thiobacillus ferrooxidans in a copper-containing ore suspension incubated in shake flasks was studied by determining the number of colony-forming units both in solution and attached to ore particles. The amounts of iron and ...
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Saturday, June 28th, 2008
Purification and partial characterization of a cellodextrin glucohydrolase (beta-glucosidase) from Trichoderma reesei strain QM 9414.
A beta-glucosidase (E.C. 3.2.1.21) was isolated from the culture filtrate of fungus Trichoderma reesei QM 9414 grown in continuous culture with biomass retention. The crude extracellular enzyme preparation was fractionated by ...
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Saturday, June 28th, 2008
Selectivity enhancement of an Escherichia coli bacterial electrode using enzyme and transport inhibitors.
The feasibility of using specific enzyme and transport inhibitors to minimize the glutamine response of a potentiometric microbial sensor is demonstrated. The glutamine response of a bacterial electrode prepared with Escherichia coli as ...
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Saturday, June 28th, 2008
Recycle of enzymes and substrate following enzymatic hydrolysis of steam-pretreated aspenwood.
The commercial production of chemicals and fuels from lignocellulosic residues by enzymatic means still requires considerable research on both the technical and economic aspects. Two technical problems that have been identified as requiring further research ...
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Saturday, June 28th, 2008
Selection of microcarrier diameter for the cultivation of mammalian cells on microcarriers.
The kinetics of mammalian cell growth in a microcarrier culture are affected by the distribution of cells on microcarriers. It has been shown previously that a critical cell number per microcarrier is required for ...
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Saturday, June 28th, 2008
Deterministic interpretation of the temperature response of microbial growth.
A deterministic approximation of the thermal deactivation process is undertaken by structuring growth kinetics of cell populations on the activity level. Growth data of the green microalga Scenedesmus obliquus under forced periodic conditions of light intensity have ...
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Saturday, June 28th, 2008
Feedback optimization of fed-batch fermentation.
The problem of feedback optimization of the feed rate for fed-batch fermentation processes is formulated in the framework of singular control theory and switching hypersurfaces. Using four differential balance equations that describe a general class of fedbatch processes and a general ...
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