Background: In Jane Horack’s article “Staphylococcus epidermidis”‚ S. epidermidis is described as “gram-positive cocci bacteria that are part of the normal flora on the skin and nasal passages.” The article goes on to say that the species was originally named Staphylococcus Albus by microbiologist Rosenback in 1884. When viewed under a microscope S. epidermidis will appear in chains‚ pairs‚ or grape-like clusters (Horak 1). Taxonomically‚ the species S. epidermidis falls in the genus Staphylococcus
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moved from one organism to another with the use of pGlo plasmids. It was hypothesized that if bacteria that were transformed with +pGlo plasmids are given the gene for GFP‚ then transformed cell colonies will be located on the LB/amp/ara and LB/amp agar plates. Cells that have been transformed with +pGlo plasmids have the ability to grow in ampicillin plates‚ and the arabinose sugar allows the colonies to be visibly fluorescent under ultraviolet light. The GFP is able to resist ampicillin because
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services of an outside research agency? Second‚ if a survey is warranted‚ should he employ MAI or I&K? Third‚ in any case‚ should the new product line be introduced? If Steve decides not to conduct a survey‚ the decision is to introduce the product with an EMV of $700‚000 [= (0.6)($1‚500‚000) + (0.4)(-$500‚000)]. If Steve decides to conduct the survey‚ he has to choose between MAI and I&K. If he chooses MAI for the survey‚ the best choice is to introduce the product irrespective of whether the
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Proiect Managementul Afacerilor Internaționale Internaționalizarea firmei Realizatori: Marcu Adrian Isăila Daniela Berladean Victoria Croitoru Daniela I. Firma Compania Apis Prod(în prezent Apidava) s-a înființat în anul 1992‚ pornind ca o mică afacere de familie‚ cu doar 2 angajaţi şi cu cei 50 de stupi ai profesorului de fizică Victor Mateş. La început toată producţia de miere era extrasă‚ ambalată şi etichetată manual de membrii familiei‚ fiind livrată direct cu
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Acesta caz s-a petrecut la sfarsitul anilor ’60‚ cand cererea pentru masini sub-compacte a fost in crestere pe piata. Specificatiile Iacocca pentru proiectarea masinii au fost fara compromisuri: "Pinto trebuia sa fie cu nici macar o uncie mai greu de 2.000 de pounds (aprox. 900 kg) si sa nu coste un cent peste 2.000 de dolari." In timpul proiectarii si productiei‚ totusi‚ testele de coliziune a relevat un defect serios la rezervorul de benzina. In accidente la peste 25 de mile
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performing these tests was to distinguish six different microbes from one another and to compare how their metabolic and biochemical processes differ from species to species to determine the unknown sample. The tests included: Triple sugar iron agar (TSAI)‚ the Sulfide Indole Mobility (SIM) test‚ Glucose fermentation‚ the Methyl Red test‚ the Voges-Proskauer test‚ Citrate test‚ the Urease Test‚ and finally the Gelatin test. The microbes that were tested during this lab were: Escherichia coli
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is conducted to identify the bacteria as gram negative or gram positive. Two other stains were carried out. To determine the motility of the bacterium‚ wet mounts of the bacterium were observed and the motility was confirmed by using soft agar plates and soft agar deeps for
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As community succession occurs in bacterial colonies pH‚ odor‚ color‚ and consistency changes take place. In this experiment‚ four different milk age samples‚ fresh‚ 24 hour old‚ 4 day old‚ and 8 day old milk‚ will be prepared on different sets of agar plates that will be diluted to different levels for optimum bacterial growth and measurement. To identify the resulting colonies a procedure called gram stain is used in the identification of bacteria. Bacteria can be gram-positive‚ gram-negative
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certain situations. Different samples of bacteria cultures were gathered from different places such as the mouth‚ shaded mulch‚ and from the table top. The samples were collected by using a cotton swab and swiped onto a petri dish filled with nutrient agar. The bacteria were then left to grow on their own in a relatively well shaded area. As a control‚ a cotton swab that had nothing on it was used. It was recognized that different types of bacteria exist in different environments and grow in different
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ABSTRACT The effect of molecular weight on the rate of diffusion was measured using two tests namely: the glass tube test and the agar-water test. The set-up of the glass tube test used two cotton balls of the same size. One cotton ball is moistened with hydrochloric acid (HCl) and the other one is moistened with ammonium hydroxide (NH4OH). The two cotton balls were inserted in both ends of the glass tube. NH4OH which has a lighter molecular weight (35.0459 g/mole) diffused with a faster rate (dave=20
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