Ss2012 hödl pasteur
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german presentation of the life of louis pasteur
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The Biot-Savart law describes the magnetic field generated by electric current. It relates the magnetic field strength to characteristics of the current such as its magnitude, direction, length, and distance from the field point. The law states that the magnetic field is proportional to the current and inversely proportional to the distance from it. It is analogous to Coulomb's law for electrostatics and is fundamental to magnetostatics. Examples of applying the law include calculating the magnetic field of a straight wire or circular loop of current.
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3. Rutherford's gold foil experiment showed that atoms have small, dense nuclei, overturning the plum pudding model. This led to the development of the Rutherford-Bohr model in which electrons orbit the nucleus in defined energy levels.
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Boca Semiconductor Corp. (BSC) is a semiconductor company located in Boca Raton, Florida that designs and manufactures integrated circuits for various applications. BSC was founded in 1995 and has grown to employ over 200 people in its headquarters and manufacturing facility. The company aims to provide customers with high-quality, cost-effective semiconductor solutions.
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- The Pauli exclusion principle allows a maximum of two electrons per orbital with opposite spins.
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The attractive force which holds various constituents (atom, ions, etc.) together and stabilizes them by the overall loss of energy is known as chemical bonding. Therefore, it can be understood that chemical compounds are reliant on the strength of the chemical bonds between its constituents; The stronger the bonding between the constituents, the more stable the resulting compound would be.
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4. unicellular, multicellular & cell differentiation
1. Unicellular organisms carry out all the functions of life in a single cell, while multicellular organisms are composed of many cells working together.
2. In multicellular organisms, cells become specialized through differentiation to form tissues and carry out specific functions. This specialization allows the organism to operate more efficiently.
3. Cell differentiation occurs as certain genes are expressed and others are not, leading cells to develop specialized structures suited to their functions. Specialized cells like nerve and muscle cells cannot reproduce, while others like skin cells can.
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This document discusses the cell cycle and cell division in prokaryotic and eukaryotic cells. It explains that the cell cycle begins when a cell forms and ends when it divides into two daughter cells. Before cell division, the cell must make a copy of its DNA and chromosomes to ensure each new cell receives the full genetic information. Prokaryotic cells undergo binary fission to divide, while eukaryotic cells progress through interphase, mitosis, and cytokinesis. Mitosis is described in detail as the process where chromosomes separate and two identical daughter cells form, each with a full set of chromosomes.
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In this lab experiment, the student built both series and parallel circuits containing three resistors each to investigate the relationships between resistance, potential difference, and current. For the series circuit, the student found that the current remains the same throughout while the potential difference varies across each resistor. For the parallel circuit, the current varies across each resistor while the potential difference remains the same. The student's measurements matched well with theoretical calculations, validating the circuit concepts.
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Solenoids
1. A solenoid is a coil of wire wrapped around a cylindrical core that produces a magnetic field when electric current passes through it.
2. The magnetic field pattern of a solenoid resembles that of a bar magnet, with north and south poles at opposite ends.
3. Different core materials, such as iron, steel, nickel, or cobalt, placed inside the solenoid influence the strength of the magnetic field produced.
Meiosis
Meiosis is a process that produces haploid gametes through two rounds of cell division. It occurs in the gonads and involves homologous chromosomes pairing and separating. Meiosis I involves pairing of homologous chromosomes followed by their separation, resulting in two haploid cells. Meiosis II then separates the sister chromatids, resulting in four haploid cells or gametes. This process ensures genetic variation between offspring through independent assortment and crossing over during meiosis I.
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El documento proporciona información sobre las maestrías y doctorados ofrecidos por la Universidad Virtual del Tecnológico de Monterrey. El Tecnológico de Monterrey es una universidad privada mexicana con presencia en América Latina, Estados Unidos y Europa. La Universidad Virtual fue fundada en 1989 y ofrece programas de posgrado con flexibilidad en tiempo y espacio a través de aprendizaje colaborativo e individual con apoyo de profesores.
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Televisa Rolled by Pena Nieto Competition Push: Corporate Mexico
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Ss2012 hödl pasteur
- 1. Louis Pasteur 1822 – 1895 Hans-Peter Hödl, OET, SS2012
- 2. Leben • geboren 27.12.1822 in Dole, Frankreich • studiert Mathematik, Geisteswissenschaften, • Promotion 1847 in Physik und Chemie in Paris • Chemieprofessor in Dijon und Straßburg von 1848 bis 1853 • 5 Kinder, 2 erwachsen Universität Louis Pasteur
- 3. Leben • 1888 – Erster Direktor des Institut Pasteur – Grundlagenforschungszentrum für Biologie und Medizin in Paris • stirbt am 28.9.1895 Institut Pasteur, Paris
- 4. Werk • gilt als Begründer der Mikrobiologie und Wegbereiter für Immunologie, Antisepsis, Biochemie und Bakteriologie • beschäftigte sich mit Gärung und Fäulnis • fand heraus, dass Kleinstlebewesen für diese Prozesse verantwortlich sind
- 5. Pasteurs Nachweis • 2 Behälter mit Bouillon 1 unverschlossen, 1 mit Garrohr(verhindert Eindringen von Fremdstoffen) • Bouillon im unverschlossenen verdarb schneller Theorie der Urzeugung widerlegt, Annahme der abiotischen Gärung widerlegt
- 6. Gärung • Umwandlung von organischem Material zu Stoffen mit meist einfacherem Molekülaufbau • Stoffwechselvorgang von Mikroorganismen bei dem Energie freigesetzt wird • läuft meist ohne Sauerstoff ab, zumindest aber ohne Sauerstoff als Elektronenakzeptor Beispiel: alkoholische Gärung
- 7. Pasteur Effekt • erhöhte Verstoffwechselung von Glucose bei der Glykolyse wenn kein Sauerstoff zur Verfügung steht • große Bedeutung in der Sportwissen- schaft(Lactat)
- 8. Pasteurisieren • Bakterien sind auch verantwortlich für Gärung von Wein und Bier • meisten Mikroorganismen sind nicht hitzebeständig Haltbarmachen von Flüssigkeiten durch kurzzeitiges Erhitzen • Beispiel Milch: 15-30 Sekunden Erhitzen auf 72-75°C
- 9. Medizin • gewisse Krankheiten werden ebenfalls durch Bakterien und Viren verursacht • 1870 Entdeckung der Seidenspinnerkrankheit • Entdeckung des Milzbrand- sowie des Hühnercholeraerregers • Entwicklung eines Impfstoffs gegen Tollwut - erste Tollwutimpfung • sterile Werkzeuge
- 10. Ehrungen • Benennung einer Universität sowie mehrerer Fakultäten, Straßen und Plätze • mehrfache Ehrendoktorwürde • Errichtung des Institut Pasteur • Ordre du Mérite agricole • Asteroid: (4804) Pasteur
- 11. Vielen Dank für ihre Aufmerksamkeit!
- 12. Quellen • http://www.onmeda.de/lexika/persoenlichkeiten/pasteur.html • http://www.musee-pasteur.com/index.php?id=336&L=2 • http://www.seilnacht.com/Lexikon/gaerung.html • http://de.wikipedia.org/wiki/Louis_Pasteur