Aktuelle Aspekte des Controllings: Festschrift für Hans-Jörg Hoitsch

Book Description

Seit Einführung der ersten Controllerstellen im privatwirtschaftlichen Bereich gegen 1880 in den USA hat das Controlling eine stürmische Entwicklung in der Praxis erlebt, die vielfach als Siegeszug bezeichnet wird. Gleichzeitig stand und steht insbesondere die deutschsprachige Betriebswirtschaftslehre dem Phänomen Controlling eher abwartend bis skeptisch gegenüber. Insbesondere hat sich bislang kein einheitliches Controllingverständnis heraus gebildet. Dementsprechend wird eine Vielzahl von Aufgaben mit dem Controlling verknüpft, die vom Rechnungswesen bis zum De-facto-Management reichen. Prof. Dr. Hans-Jörg Hoitsch, zu dessen 60. Geburtstag dieses Buch als Festschrift erscheint, hat schon früh die Notwendigkeit einer entscheidungsorientierten Controllingfunktion gesehen. Dieses Buch gibt ein Schlaglicht auf die vielfältigen Facetten des aktuellen Controllingsverständnisses.

Angebots- und Projektkalkulation: Leitfaden für Praktiker (VDI-Buch)

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Angebots- und Projektkalkulation: Leitfaden für Praktiker (VDI-Buch)
Albert Bronner
Manufacturer: Springer
ProductGroup: Book
Binding: Paperback

Management | Management & Leadership | Business & Investing | Subjects | Books

Management Science | Management & Leadership | Business & Investing | Subjects | Books

General | Arts & Photography | Subjects | Books

German | Foreign Language Nonfiction | Nonfiction | Subjects | Books

Arts & Photography | German | Foreign Language Books | Specialty Stores | Books

Nonfiction | German | Foreign Language Books | Specialty Stores | Books

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All German Books | German | Foreign Language Books | Specialty Stores | Books

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Arts & Photography | Amazon Upgrade | Stores | Books

Business & Investing | Amazon Upgrade | Stores | Books

Engineering | Amazon Upgrade | Stores | Books

Nonfiction | Amazon Upgrade | Stores | Books

Professional & Technical | Amazon Upgrade | Stores | Books
ASIN: 3540638970

Book Description

Dieser praxisorientierte Leitfaden wendet sich an Ingenieure und technisch orientierte Kaufleute in der produzierenden Industrie, zu deren Aufgaben es gehört, Angebote zu erstellen oder Projektkosten zu ermitteln. Es zeigt auf, welche Möglichkeiten für Angebots- und Projektkalkulationen bestehen und welche Genauigkeiten von diesen Verfahren zu erwarten sind. Es soll dazu anregen, diese Methoden im eigenen Unternehmen aufzubauen und einzusetzen, um das Risiko zu hoher Ansätze mit Auftragsverlust oder zu tiefer Ansätze mit direktem Geldverlust zu verringern. Auch die Grenzen der jeweiligen Kalkulationen werden aufgezeigt. Zu den Abschnitten, die praktische Aufgaben erklären, sind Beispiele eingefügt, die die Umsetzung im eigenen Unternehmen anregen und erleichtern.

Ansatze zur Weiterentwicklung der Kostenrechnung zu einem Controlling-Instrument (European university studies. Series V, Economics and management)

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Ansatze zur Weiterentwicklung der Kostenrechnung zu einem Controlling-Instrument (European university studies. Series V, Economics and management)
Nicolas Maier-Scheubeck
Manufacturer: P. Lang
ProductGroup: Book
Binding: Perfect Paperback

General | Business & Investing | Subjects | Books

German | Foreign Language Nonfiction | Nonfiction | Subjects | Books

Nonfiction | German | Foreign Language Books | Specialty Stores | Books

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ASIN: 3631453760

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Basiswissen Kostenrechnung.
Germann Josse
Manufacturer: DTV-Beck
ProductGroup: Book
Binding: Paperback

All German Books | German | Foreign Language Books | Specialty Stores | Books
ASIN: 3423508116

Basiswissen Rechnungswesen. Buchführung, Bilanzierung, Kostenrechnung, Controlling.

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Basiswissen Rechnungswesen. Buchführung, Bilanzierung, Kostenrechnung, Controlling.
Volker Schultz
Manufacturer: DTV-Beck
ProductGroup: Book
Binding: Paperback

All German Books | German | Foreign Language Books | Specialty Stores | Books
ASIN: 3423508159

Baubetriebslehre, Kostenrechnung und Leistungsrechnung, Bauverfahren

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Baubetriebslehre, Kostenrechnung und Leistungsrechnung, Bauverfahren
Winfried Brecheler , Jürgen Friedrich , and Alfons Hilmer
Manufacturer: Vieweg Verlagsgesellschaft
ProductGroup: Book
Binding: Paperback

All German Books | German | Foreign Language Books | Specialty Stores | Books
ASIN: 3528077085

Betriebliche Umweltkostenrechnung: Methoden und praxisgerechte Weiterentwicklung

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Betriebliche Umweltkostenrechnung: Methoden und praxisgerechte Weiterentwicklung
Klaus Fichter , Thomas Loew , Eberhard Seidel , R. Antes , S. Herbst , and F.M. Weber
Manufacturer: Springer
ProductGroup: Book
Binding: Hardcover

General | Popular Economics | Business & Investing | Subjects | Books

Natural Resources | Economics | Business & Investing | Subjects | Books

Environmental Science | Earth Sciences | Science | Subjects | Books

German | Foreign Language Nonfiction | Nonfiction | Subjects | Books

Nonfiction | German | Foreign Language Books | Specialty Stores | Books

Professional & Technical | German | Foreign Language Books | Specialty Stores | Books

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ASIN: 3540625976

Book Description

Seit Mitte der 70er Jahre läßt sich in der Unternehmenspraxis eine zunehmende Auseinandersetzung mit Fragen der betrieblichen Umweltkostenrechnung beobachten. Die Berechnungen beschränkten sich bis in die 80er Jahre hinein auf die Ermittlung der Kosten von nachsorgenden Umweltschutzmaßnahmen und wurden meist als Sonderrechnungen durchgeführt. Die laufende Kostenrechnung blieb dabei von Umweltfragen unberührt. Seit einigen Jahren werden jedoch umfassendere Konzepte einer Umweltkostenrechnung entwickelt, die deren Integration in das Managementsystem und die Kostenrechnung der Unternehmen zum Ziel haben. Hier werden, ausgehend vom Stand der Diskussion, mögliche Konsequenzen für die Weiterentwicklung bzw. die zukünftigen Anforderungen an eine Umweltkostenrechnung vorgestellt.

Betriebswirtschaft für Informatiker und IT-Experten (SAV Informatik)

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Betriebswirtschaft für Informatiker und IT-Experten (SAV Informatik)
Frank Herzog , Jens Juszczak , Andreas Scherf , and Klaus ter Horst
Manufacturer: Spektrum Akademischer Verlag
ProductGroup: Book
Binding: Paperback

General | Computers & Internet | Subjects | Books
ASIN: 3827417570

Book Description

Betriebswirtschaftliches Wissen ist auch für alle im IT-Umfeld Tätigen unverzichtbar, um hervorragende Arbeit leisten zu können. Primäre Zielsetzung des Buches ist eine kompakte Orientierung für Fach- und Führungskräfte aus der IT sowie für Studierende der Informatik zu betriebswirtschaftlichen Themen, zu denen auch ein spezieller IT-Bezug hergestellt werden kann. IT-Experten lernen die wesentlichen Aspekte der Betriebswirtschaft sowie die zur Umsetzung in die Praxis notwendigen Methoden und Instrumente kennen. Im Einzelnen erfahren Sie in diesem Buch:

wie die Organisation von Betrieben beschrieben und gestaltet werden kann,

welche Managementkonzepte zu unterscheiden sind,

wie Strategien im betrieblichen Umfeld entwickelt und dokumentiert werden,

wie Beschaffungs- und Logistikprozesse sowie der Bereich Marketing und Vertrieb gestaltet werden können,

wie ein erfolgreiches Prozess- und Projektmanagement realisiert werden kann,

welche Merkmale eine moderne Personalwirtschaft kennzeichnen,

was moderne Unternehmensführung ausmacht,

welche Konzepte im Informations- und Wissensmanagement üblich sind,

welche Zielsetzungen, Instrumente und Konzepte ein Controlling-System kennzeichnen,

wie das betriebliche Rechnungswesen aufgebaut und strukturiert ist,

welche Möglichkeiten eine moderne Kosten- und Leistungsrechnung ausmachen sowie

welche Methoden und Prozesse den Bereich Investition und Finanzierung kennzeichnen.

Alle Kapitel sind so aufgebaut, dass lineares Lesen und Querlesen gleichermaßen möglich ist. Damit eignet sich das Buch sowohl als Leitfaden für IT-Praktiker als auch als konzeptionelles Referenzwerk für Studierende der Informatik.

Betriebswirtschaftslehre im Grundstudium 2: Buchführung, Kostenrechnung, Bilanzen (Physica-Lehrbuch)

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Betriebswirtschaftslehre im Grundstudium 2: Buchführung, Kostenrechnung, Bilanzen (Physica-Lehrbuch)
Klaus-Peter Kistner , and Marion Steven
Manufacturer: Physica-Verlag Heidelberg
ProductGroup: Book
Binding: Paperback

German | Foreign Language Nonfiction | Nonfiction | Subjects | Books

Nonfiction | German | Foreign Language Books | Specialty Stores | Books

Professional & Technical | German | Foreign Language Books | Specialty Stores | Books

All German Books | German | Foreign Language Books | Specialty Stores | Books
ASIN: 3790810002

Book Description

Der zweite Band der Betriebswirtschaftslehre im Grundstudium befaßt sich mit dem betrieblichen Rechnungswesen. Er führt im ersten Teil knapp in das System der doppelten Buchführung ein und behandelt im zweiten Teil die Kostenrechnung. Neben der Technik der Kostenrechnung wird die Teil- und Plankostenrechnung dargestellt sowie auf neuere Entwicklungen eingegangen. Themen des dritten Teils sind der Jahresabschluß, die Rechnungslegung im Konzern und die Verfahren der Bilanzanalyse. In der didaktisch geschickten Aufbereitung des Lehrstoffs spiegelt sich die langjährige Lehrerfahrung der Autoren im Grundstudium.

Controlling, Kostenrechnung und Kostenmanagement. Grundlagen - Instrumente - Neue Ansätze

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Controlling, Kostenrechnung und Kostenmanagement. Grundlagen - Instrumente - Neue Ansätze
Thomas Joos-Sachse
Manufacturer: Gabler Verlag
ProductGroup: Book
Binding: Paperback

All German Books | German | Foreign Language Books | Specialty Stores | Books
ASIN: 3409215026

Book Description

The Trainer’s Journey to Competence draws on Jean Barbazette’s thirty-five years of experience in training trainers. The book serves as both a useful source of career advice for those in the training field, and as a starting point for creating a role-specific professional development plan. Professional trainers can use this resource to assess their knowledge, skills, and attitudes and use this information to create an individual development plan. The book can be equally helpful when creating internal training certification programs for organizations.

Download Description

The Trainer's Journey to Competence draws on Jean Barbazette's thirty-five years of experience in training trainers. The book serves as both a useful source of career advice for those in the training field, and as a starting point for creating a role-specific professional development plan. Professional trainers can use this resource to assess their knowledge, skills, and attitudes and use this information to create an individual development plan. The book can be equally helpful when creating internal training certification programs for organizations.

Customer Reviews:

Practical.......2007-08-23

Other books I considered purchasing on this topic require interpretation of the content or demand a Masters degree in Organizational Development to understand the author's point. Barbazette avoids those traps and instead offers useful methods and tools in a format I found easy to read and easy to implement. Given the multiple ways I have applied what I learned from the book, I consider this book one of my best purchases in the last twelve months.

Presents a Proven Three Phase Plan.......2006-06-22

First is the collection of information. In order to proceed with any kind of training some information needs to be determined before you can even decide that training is needed. And if it is, what kind of training. Perhaps this is product training for the sales people. Perhaps it is time management. Perhaps the problem being addressed doesn't call for more training but some kind of change in the work flow, the people, or the computer system.

Second is the analysis of the collected information. This may be summaries, complete with charts and tables; this may find something so obvious that you will wonder how it was missed. The end of this phase is to present to the management requesting the study to determine what, if any training is needed.

Finally is the development of a training plan. The author presents a ten part plan that begins with Issue Definition, and ends with an evaluation of the results of the training. These steps have been defined over many years and are a proven approach.

A CD is supplied with the book that includes forms, checklists and other tools that are referenced in the book itself.

Book Description

Eleven planetary atmospheres are included for detailed study in this reference/text, four for the giant planets (Jupiter, Saturn, Uranus, and Neptune), four for the small bodies (Io, Titan, Triton, and Pluto), and three for the terrestrial planets (Mars, Venus, and Earth). The authors have carried out a comprehensive survey of the principal chemical cycles that control the present composition and past history of planetary atmospheres, using the database provided by recent spacecraft missions supplemented by Earth-based observations.

Customer Reviews:

Treats the solar system as a unified whole.......2004-06-29

A spinoff from successful decades of planetary exploration. The missions to the inner planets and the overwhelmingly spectacular Voyager 1 and 2 flybys of the 1970s and 1980s have contributed to the results presented here.

The overall theme treats the various atmospheres of the planets as part of a coherent picture of the entire solar system. A unifying idea that the authors use is that of the formation of the solar nebula and its condensation into the planets, comets and asteroids. The lengthiest discussion is about Earth and the crucial (to us!) ways it differs from its siblings. Along the way, the authors give a good explanation of the greenhouse effect on a planet.

Book Description

Over the past few decades, the excitation and ionization of atmospheric gases has become an area of intense research. A large amount of data have been accumulated concerning the various elementary processes which occur when photons, electrons and ions collide with atoms and molecules. This scattered information has now been collected in a handbook for the first time, and the authors give a critical analysis of relevant data. This book is a comprehensive and detailed study of the available information and is distinguished by the following outstanding features: the consideration of a large number of atmospheric constituents, including H^O2, H, N^O2, N, O^O2, O, CO, CO^O2, H^O2O, HCl and some hydrocarbons the maximum number of space particles, including magnetospheric particles, are considered as projectiles: photons, electrons, hydrogen atoms, protons and helium ionsthe energy range under study corresponds to the real spectrum of cosmic fluxes, from threshold values for elementary processes up to several thousand keV the recommended values of cross sections, obtained from analysis of the available experimental data, are given in the handbook and their accuracy is estimated. These features make the handbook particularly valuable to specialists in the aeronomy of planets, comets and active perturbations, as well as to experimentalists and theoreticians working in the fields of plasma physics, atomic and molecular physics, physics of the upper atmosphere, chemical physics, optics and spectroscopy.

Photochemistry of the Atmospheres of Mars and Venus (Physics and Chemistry in Space)

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Photochemistry of the Atmospheres of Mars and Venus (Physics and Chemistry in Space)
V. A. Kransnopolsky
Manufacturer: Springer-Verlag
ProductGroup: Book
Binding: Hardcover

Mars | Astronomy | Science | Subjects | Books

Solar System | Astronomy | Science | Subjects | Books

General | Physics | Science | Subjects | Books

Problem of photochemical equilibrium of ozone in planetary atmospheres: Ozone distribution in the lower atmosphere of Mars (NASA technical note)

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Problem of photochemical equilibrium of ozone in planetary atmospheres: Ozone distribution in the lower atmosphere of Mars (NASA technical note)
Shardanand Grams
Manufacturer: For sale by the National Technical Information Service]
ProductGroup: Book
Binding: Unknown Binding

Mars | Astronomy | Science | Subjects | Books

Book Description

The widespread use of surfactants and their release into the environment has resulted in an upsurge of interest in the biodegradability of these compounds. This volume, written by a team of industrial and academic authors, provides an overview of the science and technology of the subject.

Biodegradation of octylphenol polyethoxylate surfactant Triton X-100 by selected microorganisms [An article from: Bioresource Technology]

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Biodegradation of octylphenol polyethoxylate surfactant Triton X-100 by selected microorganisms [An article from: Bioresource Technology]
H.J. Chen , D.H. Tseng , and S.L. Huang
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000RR5SQW

Book Description

This digital document is a journal article from Bioresource Technology, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Octylphenol polyethoxylate (OPEO"n) surfactants are used in numerous commercial and industrial products. Large amounts of such surfactants and their various residual biodegradation by-products are ultimately released into the environment. OPEO"n biodegradation was performed in this study using pure cultures of Pseudomonas species and strains under different environmental conditions. Environmental factors including the pH, nitrogen sources, and growth kinetics of the cells were investigated. The intermediates of Triton X-100 biotransformation were detected by high performance liquid chromatography-mass spectrophotograph (HPLC-MS). We found the highest specific growth rate (@m) was 0.56h^-^1 and this was achieved by strain E with an initial concentration of Triton X-100 of 5000mgL^-^1. A pH level of 7 was most favorable for cell growth for all five strains. The highest specific growth rate was achieved using (NH"4)"2SO"4 as the sole nitrogen source for strain E. Strain A showed an enhancement of growth when between 0.2 and 1.4mgL^-^1 of H"2O"2 was added. Detection of intermediates was possible after four days of transformation and the octylphenol triethoxylate (OPEO"3) peak was predominant, while the high molecular weight peaks had all disappeared. The kinetic analysis demonstrated that the greatest maximum specific growth rate (@m"m"a"x) and the greatest saturation constant (K"s) of 0.83h^-^1 and 5.24mgL^-^1, respectively, were obtained for strain E in 5000mgL^-^1 Triton X-100. The higher K"i revealed that strain A was resistant to higher Triton X-100 concentrations.

Degradation of di-butyl-phthalate by soil bacteria [An article from: Chemosphere]

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Degradation of di-butyl-phthalate by soil bacteria [An article from: Chemosphere]
W.L. Chao , C.M. Lin , I.I. Shiung , and Y.L. Kuo
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000RR9HLO

Book Description

This digital document is a journal article from Chemosphere, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Twelve Gram-positive phthalate ester degraders were isolated from soil. Using Biolog GP2 plates, eight of them were identified as belonging to the Corynebacterium-Mycobacterium-Nocardia group, while the remaining four were unidentifiable. When cultured in the presence of di-butyl-phthalate (DBP) in basal salts solution, five of these isolates accomplished more than 90% of DBP degradation within 48h (fast group), three were placed in the medium group, and the remaining four were placed in the slow group which caused less than 30% of DBP degradation within the same period of time. A 420bp DNA fragment was amplified from six isolates and none of them fell within the slow group. When compared with the large subunit of phthalate dioxygenase gene (phtA) of Arthrobacter keyseri, 83% and 91% similarities were evident in the nucleotide and amino acid sequences, respectively. However, no correlation between cell surface hydrophobicity and phthalate degradation ability was evident. Six surfactants (Brij 30, Brij 35, Tergitoltype NP-10, Triton N-101, Triton X-100 and SDS) were tested for their abilities to increase degradation rate. When added at the critical micellar concentration (CMC), they all displayed strong growth inhibition against the three bacteria tested, with Brij 30 been the least toxic to isolates G2 and G11, and Brij 35 had the least inhibitory effect for G1. When half the CMC of Brij 30 was incorporated into the basal salts, the inhibitory effect on DBP degradation remained. Soil helped to minimize surfactant toxicity of surfactant and increase the degradation potential of some of the test bacteria. When DBP-amended soil had been aged for three months, decreases in bioavailability were observed but the effect varied tremendously between different organisms. For isolates G1, G2, G5, G7 and G17 the aging effects were almost non-exist. The present study indicates that selection of a suitable degrader may minimize the undesired effect of aging on bioremediation process.

Effect of introduced phthalate-degrading bacteria on the diversity of indigenous bacterial communities during di-(2-ethylhexyl) phthalate (DEHP) degradation ... microcosm [An article from: Chemosphere]

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Effect of introduced phthalate-degrading bacteria on the diversity of indigenous bacterial communities during di-(2-ethylhexyl) phthalate (DEHP) degradation ... microcosm [An article from: Chemosphere]
W.L. Chao , and C.Y. Cheng
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000PDSODC

Book Description

This digital document is a journal article from Chemosphere, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Four previously isolated di-butyl-phthalate (DBP) degraders were tested for their abilities to degrade di-(2-ethylhexyl) phthalate (DEHP). In aqueous medium supplemented with 100mg/l of DEHP, both isolate G1 and Rhodococcus rhodochrous G2 showed excellent degradative activity; in three days they were able to degrade more than 97% of the added DEHP. Rhodococcus rhodochrous G7 degraded 32.5% of the added DEHP and Corynebacterium nitrilophilus G11 showed the least amount of DEHP degradation. The addition of surfactant Brij 30 at 0.1x critical micelle concentration (2mg/l) significantly improved DEHP degradation by Rhodococcus rhodochrous G2 (more than 90% of the added DEHP was degraded within 24 hours), but slightly inhibited the degradation of DEHP by the isolate G1 and Rhodococcus rhodochrous G7. Based on the 16S rDNA sequence data, isolate G1 was identified as Gordonia polyisoprenivorans. Soil inhibited DEHP degradation by G. polyisoprenivorans G1; fourteen days after a second addition of DEHP, 11.5% of the total added DEHP (i.e., 243.4@mg/g soil) remained detectable. Changes in the bacterial community were monitored using denaturing gradient gel electrophoresis (DGGE) and respective dendrogram analysis. It is clear that DEHP and DEHP plus G. polyisoprenivorans G1 substantially affected the bacterial community structure in the soils. However, as the population of indigenous DEHP degraders increased in the DEPH-treated soil, its bacterial communities resembled those in the DEHP plus G. polyisoprenivorans G1-inoculated soil by Day 17.

Effect of toluene as gaseous cosubstrate in bioremediation of hydrocarbon-polluted soil [An article from: Journal of Hazardous Materials]

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Effect of toluene as gaseous cosubstrate in bioremediation of hydrocarbon-polluted soil [An article from: Journal of Hazardous Materials]
I. Ortiz , A. Velasco , and S. Revah
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000RR8WOC

Book Description

This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The stimulation of the microbial population by a more bioavailable supplementary carbon source and by a surfactant pretreatment was studied in petroleum hydrocarbon-polluted soils bioremediation. Two types of soils were used, Soil A which had been recently polluted and the aged Soil B. They contained 52.4 and 50.4g of total petroleum hydrocarbons per kg of dry soil, respectively. The effect of passing a continuous small stream of air containing a low concentration of gaseous toluene through packed 0.5 l (@A=5.5cm) columns was studied. For Soil A, after 62 days the THPs degradation was 28% higher in the toluene treated columns than in controls. In aged Soil B the effect of toluene was not significant, probably due to bioavailability limitations. With Soil B, the combined effect of toluene as cosubstrate and a surfactant pretreatment was studied and the hydrocarbons degradation was 29% higher in the toluene-amended columns than in the controls. Toluene removal was higher than 99% in all cases. Surfactant addition increased hydrocarbon degradation when toluene was also added suggesting that the biological reaction was the limiting process. The study shows the possibilities of using gaseous substrates, such as toluene, for the in situ or ex situ treatment of petroleum hydrocarbon-polluted soil in processes limited by the biological reaction. The main advantage of the treatment is that the compound can be easily and directly delivered to the polluted soil through the venting system.

Effects of nutrients and surfactants on pyrene mineralization and Mycobacterium spp. populations in contaminated soil [An article from: Soil Biology and Biochemistry]

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Effects of nutrients and surfactants on pyrene mineralization and Mycobacterium spp. populations in contaminated soil [An article from: Soil Biology and Biochemistry]
P.Y. Cheung , and B.K. Kinkle
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000RR6T42

Book Description

This digital document is a journal article from Soil Biology and Biochemistry, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The impact of nutrient (KNO"3 and KH"2PO"4) or surfactant (Triton X-100 and Tergitol NP-10) amendments on the mineralization of ^1^4C-pyrene and the indigenous Mycobacterium spp. community structure in a petroleum-contaminated soil were determined. All soil amendments enhanced pyrene mineralization with nutrients being slightly more effective than surfactants. 16S rRNA genes were PCR-amplified using Mycobacterium spp.-specific primers, separated by temperature gradient gel electrophoresis (TGGE), and prominent bands sequenced to compare the mycobacteria communities. The soil sample with the highest level of mineralization had no detectable changes in the community structure. Disappearance of a specific phylotype occurred in soils with lower mineralization rates. Phylogenetic analysis of sequenced TGGE bands indicated existence of novel strains.

Effects of surfactant and temperature on biotransformation kinetics of anthracene and pyrene [An article from: Chemosphere]

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Effects of surfactant and temperature on biotransformation kinetics of anthracene and pyrene [An article from: Chemosphere]
C. Sartoros , L. Yerushalmi , P. Beron , and S.R. Guiot
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000RR5HRW

Book Description

This digital document is a journal article from Chemosphere, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The biotransformation and mineralization of a mixture of two polycyclic aromatic hydrocarbons (PAHs), anthracene and pyrene, which are known contaminants of soil and groundwater, by an enrichment culture in the presence or absence of 100 mgl^-^1 Tergitol NP-10, a non-ionic surfactant, and at temperatures of 10 ^oC and 25 ^oC were investigated. The overall biotransformation of 2 mgl^-^1 total PAHs with free cell suspensions in batch culture was greater than 97.2% at both examined temperatures. At 25 ^oC, the overall mineralization of anthracene was 48.8% and that of pyrene was 66.1%. However, the decrease of temperature to 10 ^oC had a negative effect on the mineralization of PAHs and reduced it to 18.5% and 61.5% for anthracene and pyrene, respectively. Using a higher PAHs concentration of 20 mgl^-^1 at 25 ^oC, the overall biotransformation of anthracene was 80.7% and that of pyrene was 100%, where only 17.3% anthracene and 7.6% pyrene were mineralized to carbon dioxide and water. The addition of surfactant at 25 ^oC increased the overall mineralization of anthracene and pyrene to 33.0% and 27.6%, respectively. However, the addition of surfactant at 10 ^oC had a negative impact on the overall biotransformation of anthracene and pyrene, reducing them to 20.6% and 14.0%, respectively. These results have significant implications in the bioremediation of PAHs-contaminated sites.

Enhanced desorption and biodegradation of phenanthrene in soil-water systems with the presence of anionic-nonionic mixed surfactants [An article from: Journal of Hazardous Materials]

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Enhanced desorption and biodegradation of phenanthrene in soil-water systems with the presence of anionic-nonionic mixed surfactants [An article from: Journal of Hazardous Materials]
H. Yu , L. Zhu , and W. Zhou
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000PDYJRM

Book Description

This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The effects of anionic-nonionic mixed surfactants, sodium dodecyl sulfate (SDS) mixed with Triton X-100 (TX100), on the desorption and biodegradation of phenanthrene in soil-water system were investigated in an aim to improve the efficiency of surfactant bioremediation technology. Results indicated that the presence of SDS not only increased the solubilization of TX100 for phenanthrene, but also reduced the sorption of TX100 onto soils. As a result, the desorption efficiency of phenanthrene from the contaminated soil was greatly enhanced by mixed surfactant solutions compared with that by single TX100 solution and appeared to be positively related with the mole fraction of SDS in solution. Mixed surfactants with relatively smaller ratio promoted phenanthrene biodegradation, for example, the biodegradation percentage of phenanthrene in 1:9 SDS-TX100 mixed solutions was about 165% of that in the single TX100 solution at the same TX100 concentration of 1.6mmol/L in 24h. But the biodegradation was inhibited with larger ratio of SDS in the mixed solutions, which may be due to the preferential utilization of SDS by phenanthrene degraders. Thus, the selection of mixed surfactants should consider simultaneously the effects of SDS on desorption and biodegradation. The experimental results can be used to provide valuable information in designing the surfactant bioremediation technology for contaminated soils.

Enhancement of biodegradation of oil adsorbed on fine soils in a bioslurry reactor [An article from: Chemosphere]

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Enhancement of biodegradation of oil adsorbed on fine soils in a bioslurry reactor [An article from: Chemosphere]
T. Okuda , M.E. Alcantara-Garduno , M. Suzuki , and Matsu
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000PKHZ5I

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This digital document is a journal article from Chemosphere, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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Techniques for enhancing the biodegradation of oil-contaminated fine soils in a slurry-phase bioreactor were investigated. Using a model system consisting of kaolin particles containing adsorbed n-dodecane as a diesel fuel surrogate, we investigated how increasing the temperature and adding a surfactant and various hydrophobic support media affected the biodegradation rate of n-dodecane. Increasing the temperature from 25 to 35^oC decreased the time required for complete degradation of n-dodecane by 30%, from 110h to 80h. Addition of the surfactant polyethylene glycol p-1,1,3,3-tetramethylbutylphenyl ether decreased the degradation time to less than 48h at 35^oC, although a high concentration of the surfactant (3000mgl^-^1) was required. We suspect that the surfactant increased the degradation rate by solubilizing the n-dodecane into the solution phase in which the microorganisms were suspended. We tested five types of organic polymers as support media for the microorganisms and found that the biodegradation time could be reduced by approximately 50% with a support medium made from polyurethane; in the presence of this medium, only 36h was required for complete decomposition at 35^oC. The reduction in the degradation time was probably due to transfer of the n-dodecane from the soil to the support medium, which improved contact between the n-dodecane and the microorganisms. The polyurethane support medium bearing the microorganisms was stable and could be reused.

Fate, behavior and effects of surfactants and their degradation products in the environment [An article from: Environment International]

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Fate, behavior and effects of surfactants and their degradation products in the environment [An article from: Environment International]
G.G. Ying
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

Elsevier | By Publisher | e-Docs | Formats | Books
ASIN: B000RRA1FU

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This digital document is a journal article from Environment International, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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Surfactants are widely used in household and industrial products. After use, surfactants as well as their products are mainly discharged into sewage treatment plants and then dispersed into the environment through effluent discharge into surface waters and sludge disposal on lands. Surfactants have different behavior and fate in the environment. Nonionic and cationic surfactants had much higher sorption on soil and sediment than anionic surfactants such as LAS. Most surfactants can be degraded by microbes in the environment although some surfactants such as LAS and DTDMAC as well as alkylphenols may be persistent under anaerobic conditions. LAS were found to degrade in sludge amended soils with a half-lives of 7 to 33 days. Most surfactants are not acutely toxic to organisms at environmental concentrations and aquatic chronic toxicity of surfactants occurred at concentrations usually greater than 0.1 mg/L. However, alkylphenols have shown to be capable of inducing the production of vitellogenin in male fish at a concentration as low as 5 @mg/L. More toxicity data are needed to assess the effects on terrestrial organisms such as plants.

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A Quickstart to the central issues in developmental biology

Total misunderstanding

Shaping Life: Genes, Embryos and Evolution (Darwinism Today series)
John E. Smith
Manufacturer: Yale University Press
ProductGroup: Book
Binding: Hardcover

Genetics | Evolution | Science | Subjects | Books
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General | Evolution | Professional Science | Professional & Technical | Subjects | Books
Genetics | Evolution | Professional Science | Professional & Technical | Subjects | Books
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ASIN: 0300080220

Customer Reviews:

A Quickstart to the central issues in developmental biology.......2000-12-17

I was prompted to write this after reading the review below from the New Mexico reader. He misses the point, not Maynard-Smith. This little book (45 pages)is based on a lecture given by Smith at the London School of Economics. The central theme of his lecture was to make the point that the two views in developmental biology i.e. dynamic-holistic view and the local-reductionist view are both important. But, he extends this thinking by suggesting that this dichotomy in biology is a pattern that exists in all aspects/spheres/disciplines in life. This is what I found so revealing. Gore Vs Bush could not be a better (current) example that comes to mind when reading the final chapter 5 - Reductionists to the right, Holists to the left.

Total misunderstanding.......1999-11-22

Although I certainly enjoy most books and articles by Maynard Smith, this book was a tremendous disappointment. He argues against self-organization in biology in a very bad way. Instead of a good argument, one finds a subjective, totally biased and unscientific argument (what a splash pattern has to do with morphogenesis? no idea, really ... that's a funny picture but nothing to do with development). Still worse, Maynard Smith tries to "put down" previous and current work on development from the point of view of complexity by claiming that it has to do with some obscure disappointment with Marxism and with some feminist-like reasoning (? ). I find this strategy really unfair and not appropiate for a great scientist and writer such as Maynard Smith. I think that it is clear that selforganization is, **together with information and adaptation** a fundamental part of the understanding of life. In trying to ridiculize complexity and selforganization, the author is (perhaps uncounsciously) acting in a way not far from "scientific creationists".

Shaping Life. Genes, Embryos and Evolution

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Shaping Life. Genes, Embryos and Evolution
John Maynard Smith
Manufacturer: Weidenfeld & Nicolson
ProductGroup: Book
Binding: Paperback
ASIN: B000ORKJVO

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Shaping Life: Genes, Embryos and Evolution
John Maynard Smith John Maynard Smith
Manufacturer: Yale University Press
ProductGroup: Book
Binding: Paperback
ASIN: B000ORK8RE

Book Description

A satire that's in a Tom Wolfe tradition, loaded with baudy sex, dirty politics, and of course, pro-sports figures who set themselves up for a knee slapping, Humpty Dumpty fall.

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A satire that's in a Tom Wolfe tradition, loaded with baudy sex, dirty politics, and of course, pro-sports figures who set themselves up for a knee slapping, Humpty Dumpty fall.

Customer Reviews:

A Screamer!!!.......2002-06-17

This is the funniest book I've read in years. It is totally refreshing, totally un-politically correct. The characters are easily recognizable in the Charlotte pro-sports world. The crazy thing is, this story is so believable! As a book reviewer for a daily newspaper, I say hats off to Shallow Throat.

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