Scholars Research Library The antimicrobial effect of Ultra –Violet
... The examination of the effect of UV on Klebsiella pneumoniae was studied (Table 2). As a reminder, Klebsiella is a gram negative bacterium, involved in nosocomial pneumonia and it is sensitive to UV radiations. The total destruction of such a pathogenic microorganism (100 % of inhibition) was observ ...
... The examination of the effect of UV on Klebsiella pneumoniae was studied (Table 2). As a reminder, Klebsiella is a gram negative bacterium, involved in nosocomial pneumonia and it is sensitive to UV radiations. The total destruction of such a pathogenic microorganism (100 % of inhibition) was observ ...
Slide 1
... between lactose fermenters and lactose nonfermenters due to the presence or absence of dye uptake in the bacterial colonies. ...
... between lactose fermenters and lactose nonfermenters due to the presence or absence of dye uptake in the bacterial colonies. ...
PDF
... branches of production, including food, chemical, agricultural, and pharmacological. Alternatively, the success of the genetic transformation carried out by Herbert Boyer and Stanley Cohen in California from the construction of chimeric E. coli cells containing frog (Xenopus laevis) DNA changed the ...
... branches of production, including food, chemical, agricultural, and pharmacological. Alternatively, the success of the genetic transformation carried out by Herbert Boyer and Stanley Cohen in California from the construction of chimeric E. coli cells containing frog (Xenopus laevis) DNA changed the ...
The interaction between the mucosal immune system and the
... Preparation of pure cultured bacteria for flow cytometry: Pure cultured bacteria were washed once with PBS, adjusted to the optimal bacterial concentration (108 bacteria / ml) in 500 µl, added to 20 µl PI (final concentration: 4 mg /l), stored on ice in the dark and analysed within two hours. For vi ...
... Preparation of pure cultured bacteria for flow cytometry: Pure cultured bacteria were washed once with PBS, adjusted to the optimal bacterial concentration (108 bacteria / ml) in 500 µl, added to 20 µl PI (final concentration: 4 mg /l), stored on ice in the dark and analysed within two hours. For vi ...
UNIVERSITY OF DELHI FACULTY OF INTER-DISCIPLINARY & APPLIED SCIENCES
... Establishment of fields of medical microbiology and immunology through the work of Paul Ehrlich, Elie Metchnikoff, Edward Jenner. Unit 2Diversity of Microbial World No. of Hours: 43 A. Systems of classification Binomial Nomenclature, Whittaker’s five kingdom and Carl Woese’s threekingdom classificat ...
... Establishment of fields of medical microbiology and immunology through the work of Paul Ehrlich, Elie Metchnikoff, Edward Jenner. Unit 2Diversity of Microbial World No. of Hours: 43 A. Systems of classification Binomial Nomenclature, Whittaker’s five kingdom and Carl Woese’s threekingdom classificat ...
Practical Notes: Tropical Bacteriology
... Many bacteria secrete around themselves a polysaccharide substance often referred to as a slime layer. This may become sufficiently thick to form a definite capsule around de organism. This capsule increases the pathogenicity of an organism by resistance against phagocytosis by host cells. Special t ...
... Many bacteria secrete around themselves a polysaccharide substance often referred to as a slime layer. This may become sufficiently thick to form a definite capsule around de organism. This capsule increases the pathogenicity of an organism by resistance against phagocytosis by host cells. Special t ...
Interactions of Foodborne Pathogens with Free‐living Protozoa
... many revisions and it was already clear from the beginning of the 19th century that single-celled eukaryotes were a difficult part in eukaryotic systematics (Scamardella 1999). The eukaryotes were divided according to Whittaker into the Kingdoms Animalia, Plantae, Fungi, and Protista (Whittaker 1969 ...
... many revisions and it was already clear from the beginning of the 19th century that single-celled eukaryotes were a difficult part in eukaryotic systematics (Scamardella 1999). The eukaryotes were divided according to Whittaker into the Kingdoms Animalia, Plantae, Fungi, and Protista (Whittaker 1969 ...
Marine natural products : isolation, identification, and modification of
... metabolites produced by marine bacteria isolated from sponge tissue, a marine bacterium isolated from Tedania ignis tissues, TSM6113, was investigated for the production of some unique alkaloids. Culture conditions were modified and five compounds were identified, several of which were previously un ...
... metabolites produced by marine bacteria isolated from sponge tissue, a marine bacterium isolated from Tedania ignis tissues, TSM6113, was investigated for the production of some unique alkaloids. Culture conditions were modified and five compounds were identified, several of which were previously un ...
One common cause of community
... ANSWER: B Scalded skin syndrome is due to which toxin of Staphylococcus aureus? A. Epidermolytic toxin. B. Enterotoxin. C. Leucocidin. D. Haemolysin E. Necrotoxin ANSWER: A Which of the following bacteria ferment mannitol anaerobically? A. Staphylococcus aureus. B. S. epidermidis. C. S. saprophyticu ...
... ANSWER: B Scalded skin syndrome is due to which toxin of Staphylococcus aureus? A. Epidermolytic toxin. B. Enterotoxin. C. Leucocidin. D. Haemolysin E. Necrotoxin ANSWER: A Which of the following bacteria ferment mannitol anaerobically? A. Staphylococcus aureus. B. S. epidermidis. C. S. saprophyticu ...
LAB MANUAL for BIOL 2420 - IWS2.collin.edu
... Field-of-View is the area of the slide that you are observing through the microscope. As you increase the magnification the actual area of the slide that you are looking at is getting smaller. You can think of the field-of-view as a dartboard. At low magnification you are able to see the entire dart ...
... Field-of-View is the area of the slide that you are observing through the microscope. As you increase the magnification the actual area of the slide that you are looking at is getting smaller. You can think of the field-of-view as a dartboard. At low magnification you are able to see the entire dart ...
Microbiology Lab Manual Spring 2013
... Field-of-View is the area of the slide that you are observing through the microscope. As you increase the magnification the actual area of the slide that you are looking at is getting smaller. You can think of the field-of-view as a dartboard. At low magnification you are able to see the entire dart ...
... Field-of-View is the area of the slide that you are observing through the microscope. As you increase the magnification the actual area of the slide that you are looking at is getting smaller. You can think of the field-of-view as a dartboard. At low magnification you are able to see the entire dart ...
Silogini Thanarajah
... extracted from various species of red algae; used in solid culture media for bacteria and other microorganisms. ...
... extracted from various species of red algae; used in solid culture media for bacteria and other microorganisms. ...
Practical Microbiology
... of hypothesis-driven studies. However, in scientific research, this kind of ambiguity (data-driven exploratory and descriptive studies versus hypothesis-driven explanatory and interpretative research) has always been characteristic. With the development of the novel genome-based molecular approaches ...
... of hypothesis-driven studies. However, in scientific research, this kind of ambiguity (data-driven exploratory and descriptive studies versus hypothesis-driven explanatory and interpretative research) has always been characteristic. With the development of the novel genome-based molecular approaches ...
ppt
... - photoheterotrophs: use light as source of energy, but harvest organics from environment. Only done by bacteria. - photoautotrophs: use light as source of energy, and use this energy to fix carbon dioxide. bacteria and some eukaryotes. - chemoheterotrophs: get energy and carbon from organics they c ...
... - photoheterotrophs: use light as source of energy, but harvest organics from environment. Only done by bacteria. - photoautotrophs: use light as source of energy, and use this energy to fix carbon dioxide. bacteria and some eukaryotes. - chemoheterotrophs: get energy and carbon from organics they c ...
antibiotics resistance among anaerobic pathogens
... consisting from facultative anaerobic microorganisms, spirochetes and motile rods. The proportions of strict anaerobic, Gram negative organisms increase significantly in accordance with increasing severity of disease. Disease activity in periodontal disease may range from slow, chronic, progressive ...
... consisting from facultative anaerobic microorganisms, spirochetes and motile rods. The proportions of strict anaerobic, Gram negative organisms increase significantly in accordance with increasing severity of disease. Disease activity in periodontal disease may range from slow, chronic, progressive ...
Life at High Salt Concentrations
... Thermophilic, Psychrophilic, and Alkaliphilic Halophiles Among the halophilic prokaryotes some are adapted to other forms of environmental stress in addition to salt stress. Thus, thermophilic, psychrophilic, and alkaliphilic halophiles are known. No acidophilic halophiles have been described as yet ...
... Thermophilic, Psychrophilic, and Alkaliphilic Halophiles Among the halophilic prokaryotes some are adapted to other forms of environmental stress in addition to salt stress. Thus, thermophilic, psychrophilic, and alkaliphilic halophiles are known. No acidophilic halophiles have been described as yet ...
Microbial metabolism of short-chain unsaturated hydrocarbons
... tracer gas in air pollution studies [23]. The atmospheric concentrations of the non-methane hydrocarbons ( N M H C ) have been monitored several times at different locations. In urban areas the N M H C - c o n c e n t r a t i o n was in the range of 250-1000 ppbC while concentrations in samples from ...
... tracer gas in air pollution studies [23]. The atmospheric concentrations of the non-methane hydrocarbons ( N M H C ) have been monitored several times at different locations. In urban areas the N M H C - c o n c e n t r a t i o n was in the range of 250-1000 ppbC while concentrations in samples from ...
"Ecophysiological and molecular characterization of estuarine microbial mats" Laura VILLANUEVA ÁLVAREZ
... • Introduction and objectives of the study A microbial mat is a model of consortial association. The close spatial relationships between its members have facilitated the establishment of microscale biochemical gradients and ‘microniches’, which leads to a more complete nutrient recycling, the divers ...
... • Introduction and objectives of the study A microbial mat is a model of consortial association. The close spatial relationships between its members have facilitated the establishment of microscale biochemical gradients and ‘microniches’, which leads to a more complete nutrient recycling, the divers ...
MEDICAL BACTERIOLOGY Lesson № 19 STAPHYLOCOCCI
... and stained with methylene blue, it is easy to notice that many leucocytes are present in the smear and to note the phenomenon of noncompleted phagocytosis: presence of the intracellular gram-negative diplococci of Neisseria gonorrhoeae within the blue-staining segmented neutrophils. The smears made ...
... and stained with methylene blue, it is easy to notice that many leucocytes are present in the smear and to note the phenomenon of noncompleted phagocytosis: presence of the intracellular gram-negative diplococci of Neisseria gonorrhoeae within the blue-staining segmented neutrophils. The smears made ...
Antimicrobial Producing Bacteria as Agents of
... quickly categorize the soils so over time we could develop a method in which we could quickly decide if a soil should be used in the labor intensive process of characterizing as many of the microbes present as possible. This characterization of a soil would allow us to decide to focus on a particula ...
... quickly categorize the soils so over time we could develop a method in which we could quickly decide if a soil should be used in the labor intensive process of characterizing as many of the microbes present as possible. This characterization of a soil would allow us to decide to focus on a particula ...
Bacterial survival in evaporating deposited droplets on a
... process was believed to be associated with the abrupt evaporation of droplets, and the slower one with oxidation. Cox (1987) reviewed most of the viability studies of the 1960s and 1970s, and proposed a kinetic model to fit the experimental results of viability–time curves. The rapid death rate in t ...
... process was believed to be associated with the abrupt evaporation of droplets, and the slower one with oxidation. Cox (1987) reviewed most of the viability studies of the 1960s and 1970s, and proposed a kinetic model to fit the experimental results of viability–time curves. The rapid death rate in t ...
I BSC BT - 209B-CELL BIOLOGY AND GENETICS
... 68. Pasteur is credited with all the following except ________. A. construction of swan necked vessels B. development of a vaccine for rabies C. development of the technique for rabies D. became the director of the Pasteur institute in Paris, France ANSWER: D 69. One of the most im ...
... 68. Pasteur is credited with all the following except ________. A. construction of swan necked vessels B. development of a vaccine for rabies C. development of the technique for rabies D. became the director of the Pasteur institute in Paris, France ANSWER: D 69. One of the most im ...
On the antibacterial action of cultures of a Penicillium, with special
... rapid about 2O’C. No growth is observed under anaerobic conditions. In its morphology this organism is a penicillium and in all its characters it most closely resembles P. rubrum. Biourge (1923) states that he has never found P. rubrum in nature and that it is an “animal de laboratoire.” This penici ...
... rapid about 2O’C. No growth is observed under anaerobic conditions. In its morphology this organism is a penicillium and in all its characters it most closely resembles P. rubrum. Biourge (1923) states that he has never found P. rubrum in nature and that it is an “animal de laboratoire.” This penici ...
B ) Revised syllabus with effect from 2007-08
... e) A candidate who has secured less than 65% of attendance in the final Semester has to compensate his / her attendance shortage in a manner to be decided by the Head of the Department concerned after rejoining the Course. 5. Restriction to take the Examinations a) Any candidate having arrear paper( ...
... e) A candidate who has secured less than 65% of attendance in the final Semester has to compensate his / her attendance shortage in a manner to be decided by the Head of the Department concerned after rejoining the Course. 5. Restriction to take the Examinations a) Any candidate having arrear paper( ...
Interpretation of Gram Stains for the Nonmicrobiologist
... the morphotypes of normal flora in sputum specimens rather than reporting them individually. Sometimes organisms that are present in normal flora are also important causes of community-acquired pneumonia (eg, Streptococcus pneumoniae, Moraxella catarrhalis, and Haemophilus influenzae) or nosocomial ...
... the morphotypes of normal flora in sputum specimens rather than reporting them individually. Sometimes organisms that are present in normal flora are also important causes of community-acquired pneumonia (eg, Streptococcus pneumoniae, Moraxella catarrhalis, and Haemophilus influenzae) or nosocomial ...
Microorganism
A microorganism (from the Greek: μικρός, mikros, ""small"" and ὀργανισμός, organismós, ""organism"") is a microscopic living organism, which may be single celled or multicellular. The study of microorganisms is called microbiology, a subject that began with the discovery of microorganisms in 1674 by Antonie van Leeuwenhoek, using a microscope of his own design.Microorganisms are very diverse and include all the bacteria and archaea and almost all the protozoa. They also include some fungi, algae, and certain animals, such as rotifers. Many macroscopic animals and plants have microscopic juvenile stages. Some microbiologists also classify viruses (and viroids) as microorganisms, but others consider these as nonliving.Microorganisms live in every part of the biosphere, including soil, hot springs, ""seven miles deep"" in the ocean, ""40 miles high"" in the atmosphere and inside rocks far down within the Earth's crust (see also endolith). Microorganisms, under certain test conditions, have been observed to thrive in the vacuum of outer space. The total amount of soil and subsurface bacterial carbon is estimated as 5 x 1017 g, or the ""weight of the United Kingdom"". The mass of prokaryote microorganisms — which includes bacteria and archaea, but not the nucleated eukaryote microorganisms — may be as much as 0.8 trillion tons of carbon (of the total biosphere mass, estimated at between 1 and 4 trillion tons). On 17 March 2013, researchers reported data that suggested microbial life forms thrive in the Mariana Trench. the deepest spot in the Earth's oceans. Other researchers reported related studies that microorganisms thrive inside rocks up to 580 m (1,900 ft; 0.36 mi) below the sea floor under 2,590 m (8,500 ft; 1.61 mi) of ocean off the coast of the northwestern United States, as well as 2,400 m (7,900 ft; 1.5 mi) beneath the seabed off Japan. On 20 August 2014, scientists confirmed the existence of microorganisms living 800 m (2,600 ft; 0.50 mi) below the ice of Antarctica. According to one researcher,""You can find microbes everywhere — they're extremely adaptable to conditions, and survive wherever they are.""Microorganisms are crucial to nutrient recycling in ecosystems as they act as decomposers. As some microorganisms can fix nitrogen, they are a vital part of the nitrogen cycle, and recent studies indicate that airborne microorganisms may play a role in precipitation and weather. Microorganisms are also exploited in biotechnology, both in traditional food and beverage preparation, and in modern technologies based on genetic engineering. A small proportion of microorganisms are pathogenic and cause disease and even death in plants and animals. Microorganisms are often referred to as microbes, but this is usually used in reference to pathogens.