biofilm formation of salmonella typhimurium under different temperatures and phs

... reduces biofilmfilm build-up 36 Chapter III – Biofilm formation of Salmonella Typhimurium under different temperatures and pHs In this chapter, the effect of temperature and pH on biofilm formation ... of two experimental studies In the first study, the effect of different temperatures (28, 37 and 42 ºC) and pHs (6 and 7) on biofilm formation capability of S Typhimurium on stainless steel and ... Biofilm formation of Salmonella Typhimurium under different temperatures and pHs 37 A Materials and methods 37 Bacterial strains and culture conditions 37 Biofilm...

Ngày tải lên: 06/10/2015, 21:14

... Glu-Pg- and mAb A10.2-treated cells; lane 6, Glu-Pg- and mAb 34D3-treated cells Bands in lanes and correspond to forms I and II of plasmin(ogen) High molecular weight bands in lanes and correspond ... Kinetics of plasmin formation performed on cells (main figure) and fibrin (inset) in the presence of varying concentrations of mAb A10.2 or mAb 34D3 (0–1 lM for cells and 0–0.25 lM for fibrin) and fixed ... [27,28] and that conformational changes in Glu-Pg are induced by ligand binding A conformational shift to the more expanded form, roughly similar to that of 3394 the U-shaped open form of Lys-Pg,...

Ngày tải lên: 20/02/2014, 01:20

... alone for patient care and management Refer to the listed references and other sources for a more detailed analysis and discussion of research and patient care information The information in the Guideline ... reservoir of liquefied vitreous and aqueous is available to pass into any retinal break and assist in the formation of a retinal detachment The forward collapsing and rotational motion of the vitreous ... small and located at the posterior margin of the vitreous base.108 Retinal tears are of similar type and location, and retinal detachments have similar morphological characteristics and time of...

Ngày tải lên: 22/03/2014, 09:20

... there were 12 adults of Q crispula We collected leaves of every adult and all seedlings that germinated in 2004 in plots A and B, and in 2005 in plots C and D, to detect and compare vertical ... dispersal and genetic structure of trees Acknowledgements: Dr K Ishida, of the Graduate School of Agricultural and Life Sciences, the University of Tokyo, provided survey references and helpful ... Movement and decomposition of litters on mountainous slope: Colonies of Sasamorpha borealis var borealis prevent movement of litters and promote decomposition, Abstracts of Annual Meeting of the...

Ngày tải lên: 07/08/2014, 16:21

... Microbiological Aspects of Biofilms and Drinking Water Steven L Percival, James T Walker, and Paul R Hunter © 2000 by CRC Press LLC Microbiological Aspects of BIOFILMS and DRINKING WATER STEVEN ... presence of agrochemicals and faecal contamination Because of these various sources of pollution, the microbiological and chemical quality of lowland water is variable and can often be very poor Such ... that flocculation and sedimentation alone removed 99.9% of poliovirus and 99.7% of bacteriophage T4 Rao et al.9 also reported that 98% of poliovirus, 95% of rotavirus, and 97% of hepatitis A were...

Ngày tải lên: 12/08/2014, 05:21

... Public Water Supplies in England and Wales 1911–1998, Number of Outbreaks in 10-Year Periods 10-Year Period 1911–1920 Number of Cases and Deaths Number of Outbreaks Site of Contamination Source Distribution ... operation of water points, and drainage Related to unsanitary excreta disposal, poor personal and domestic hygiene, and unsafe drinking water Related to the absence of nearby sources of safe water ... Aspects of Biofilms and Drinking Water TABLE 3.1 Estimates of Morbidity and Mortality of Water-Related Diseases Disease Morbidity (Episodes/Year, or as Stated) Mortality (Deaths/Year) Relationship of...

Ngày tải lên: 12/08/2014, 05:21

... less understood A biofilm generally has a high content of EPS consisting of between 50 and 90% of the matrix.73 An understanding of the physical and chemical characteristics of the biofilm matrix and ... literature in terms of DLVO theory developed and named for Derjaguin and Landau53 and Verwey and Overbeek54 to explain the stability of lyophobic colloids, representative of bacterial cells, and the surface ... (reversible and irreversible adhesion of microbes to the conditioned surface) Growth and division of the organisms with the colonisation of the surface, microcolony formation and biofilm formation...

Ngày tải lên: 12/08/2014, 05:21

... phase 7.3 MICROBIOLOGY OF POTABLE WATER AND BIOFILMS Potable water generally contains a lot of microorganisms, particularly ones which are injured and dormant, as a result of the disinfection process ... Water • • • • Discolouration of water Taste and odour effects Growth of invertebrates Corrosion and pitting Control of the biofilm becomes one of the main objectives of good potable water distribution ... 10:35 AM Biofilm Formation in Potable Water 89 7.4 RELEVANCE OF BIOFILMS IN POTABLE WATER The depletion of dissolved oxygen, reduction of sulphates to hydrogen sulphide, bad taste, and colour may...

Ngày tải lên: 12/08/2014, 05:21

... AM 156 Microbiological Aspects of Biofilms and Drinking Water time across a range of samples and environments and are understood by microbiologists and a wide range of water treatment specialists ... Methods of Sampling Biofilms in Potable Water 161 Hose Clip O-Ring Stud Polyethylen Pipe BIOFILM 10mm FIGURE 9.4 Cross section of the pipe of the NCIMB biofilm generator Courtesy of Hopton, J.W and ... scenario of flow rate and, hence, the greatest opportunity for biofouling Similar types of devices were used at the county hospital in Hellersen, Germany to investigate corrosion and biofilm formation. 10...

Ngày tải lên: 12/08/2014, 05:21

... leading to loss of cell permeability and, therefore, the leaking of proteins, DNA, and RNA Damage to nucleic acids and enzymes 11.3.3 EFFECTIVENESS ON BIOFILMS The effectiveness of chlorine within ... litre) prevented growth of micro- and macrofouling organisms LeChevallier, Cawthon, and Lee12 showed a similar effect with mg per litre of copper and 10 mg per litre of sodium chlorite exposed ... concentrations and short contact periods A major drawback of using chloramines in potable water, and for the control of biofilms, is that it is known to result in the formation of low concentrations of nitrites.13...

Ngày tải lên: 12/08/2014, 05:21

... as functions of time t for different loadings (Left) And rupture time as functions of loading forces at different stages of decohesion (Right) Three cases with different values of are demonstrated: ... level This thesis aims to provide in-depth understanding of the mechanics and kinetics of cell adhesion and detachment through biophysical modeling and computer simulation on intercellular interactions ... MODELING AND SIMULATION OF CELL ADHESION AND DETACHMENT SUN LU (B Eng., FDU China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING...

Ngày tải lên: 10/09/2015, 15:48

... (a-c) E coli biofilms and (d-f) S aureus biofilms: (a) and (d) pre-grown biofilms after incubation in PBS for 24 h, (b) and (e) with addition of CMCS-MNPs (2.0 mg/mL) without MF for and after incubation ... without MF) and CMCS on pre-grown (a) S aureus biofilms and (b) E coli biofilms after 12, 24, and 48 h The controls refer to the respective pre-grown biofilms in sterile PBS without addition of CMCS ... Biofilm 2.1.1 Formation and development of biofilm 2.1.2 The mechanisms of resistance to antibiotics 2.1.3 Infectious diseases 2.1.4 Disruption of...

Ngày tải lên: 02/10/2015, 17:14

... again, and repeat a number of times to create a series of paw prints marching into the distance Figure 8-14: The many faces of transformations The mask-related selection commands At the bottom of ... (see Figure 8-9) The Magic Wand tool Figure 8-9: Drag through an area of color to select the pixels under the brush and nearby pixels of similar color The Magic Wand tool selects pixels similar ... border to clean up the edges of the selected area of color ߜ Smooth: When you click with the Magic Wand to make a selection of an area of color, you might see all kinds of tiny 1- or 2-pixel areas...

Ngày tải lên: 27/08/2012, 14:35

... and all associated documentation are proprietary and copyrighted products Worldwide rights of ownership rest with Computers and Structures, Inc Unlicensed use of the program or reproduction of ... trademark of Microsoft Corporation Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated DISCLAIMER CONSIDERABLE TIME, EFFORT AND EXPENSE HAVE GONE INTO THE DEVELOPMENT AND DOCUMENTATION ... bridge spans 60 feet, and has a width and height of 12 feet each The supports are rollers at one end, and pins at the other The trusses and cross members are to be constructed of 2L4X4’s, while the...

Ngày tải lên: 06/09/2012, 15:56

... and all associated documentation are proprietary and copyrighted products Worldwide rights of ownership rest with Computers and Structures, Inc Unlicensed use of the program or reproduction of ... trademark of Microsoft Corporation DISCLAIMER CONSIDERABLE TIME, EFFORT AND EXPENSE HAVE GONE INTO THE DEVELOPMENT AND DOCUMENTATION OF SAP2000 THE PROGRAM HAS BEEN THOROUGHLY TESTED AND USED ... ACCEPTS AND UNDERSTANDS THAT NO WARRANTY IS EXPRESSED OR IMPLIED BY THE DEVELOPERS OR THE DISTRIBUTORS ON THE ACCURACY OR THE RELIABILITY OF THE PROGRAM THE USER MUST EXPLICITLY UNDERSTAND THE...

Ngày tải lên: 06/09/2012, 15:56

... helped us to understand the effects of random access patterns and locality, both of which can be exploited to reduce the cost of cleaning The simulator models a file system as a fixed number of 4-kbyte ... disk and in terms of how much of the data written to the log they represent More than 99% of the live data on disk consists of file data blocks and indirect blocks However, about 13% of the information ... areas of cost and capacity rather than performance There are two components of disk performance: transfer bandwidth and access time Although both of these factors are improving, the rate of improvement...

Ngày tải lên: 12/09/2012, 15:05

... generation and recognition are used to communicate between humans and machines Rather than using your hands and eyes, you use your mouth and ears This is very convenient when your hands and eyes ... very specialized audience State -of- the-art researchers need this kind of detailed mathematics to understand the theoretical implications of the work A basic premise of this book is that most practical ... sound pulses between kHz and 40 kHz are transmitted into the water, and the resulting echoes detected and analyzed Uses of active sonar include: detection & localization of undersea bodies, navigation,...

Ngày tải lên: 13/09/2012, 09:49

... Social phobia and disruptive social anxiety are features of the lives of many thousands of people But exactly what is social phobia? What causes it? What is its nature and what kinds of treatments ... key concepts and methods and a substantive body of research, this book aims to answer these questions and clarify social phobia by means of critical discussions and examination of evidence It ... clinicians, and students in clinical and health psychology and psychiatry AR I E L ST R AV Y N S K I is Professor of Clinical Psychology in the Department of Psychology at the University of Montreal...

Ngày tải lên: 21/09/2012, 10:54

... obtained from different catalyst samples prepared by different treatments Nevertheless, observing SEM photographs of Fig and Fig 4, and EDX maps of Figs 5-9, one can speculate that iron and titanium ... hydrogenation of those compounds accounts for more than 75% of the total hydrogen consumption Fig shows the evolution of the conversion of the different compounds with reaction time The evolution of the ... collected after h, and 12 h reaction time, corresponding to the catalyst in the period of declining activity, and 40 h, corresponding to the Fig SEM photographs of the surface of red mud: (a) fresh,...

Ngày tải lên: 23/09/2012, 14:46

Ngày tải lên: 04/10/2012, 10:02