Posters

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Ranke J, Lutz E, Mathis M, Poiger T, Balmer M, Blom J (2023) Nationale Risikoindikatoren für Pflanzenschutzmittel - Konzept und alternative Anwendungsmöglichkeiten. Umwelt 2023 - Gemeinsame Jahrestagung der SETAC GLB e.V. und der GDCh-Fachgruppe Umweltchemie und Ökotoxikologie, 11.-13. September 2023, Muttenz, Schweiz.
Ranke J, Wöltjen J (2023) Vereinfachte Anwendung hierarchischer …
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New Job

Date Lang de

In the beginning of the year I have joined Agroscope, the Swiss competence center for research in agriculture, the food economy and the environment. There, I have joined the group evaluating effects and impacts of pesticides which is located in Wädenswil. After working formally on my own in the last …

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Services in regulatory fate modelling

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Update 2023

As I am now employed with 80% of a full-time position at Agroscope, my capacity to do regulatory fate modelling is very limited.

Degradation kinetics

Evaluation of degradation study data:

  • OECD 307: aerobic or anaerobic soil
  • OECD 308: water/sediment
  • OECD 309: surface water
  • field dissipation trials
  • Various …
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Refereed publications

Date
36.Ranke J, Wöltjen J, Schmidt J, and Comets E (2021) Taking kinetic evaluations of degradation data to the next level with nonlinear mixed-effects models. Environments 8 (8) 71 doi:10.3390/environments8080071
35.Ranke J, Meinecke S (2019) Error Models for the Kinetic Evaluation of Chemical Degradation Data Environments …
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Release of mkin 1.0

Date Lang de

More than 10 years after the first code of the 'mkin' package was published, I am happy to announce the release of mkin version 1.0!

With the version number I would like to indicate that the approach taken in the package is mature and battle-proven, and further significant developments …

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New publication

Date Modified Lang de

I am happy to announce that the publication on the software comparison of kinetic evaluation software is now available online! As the supporting information containing the numerical results obtained with the test datasets published on the journal website is marked as "Draft", I have prepared a version for publicaton on …

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Theses

Date
Ranke J (2010) Scientific concepts and tools for sustainable chemistry as applied to ionic liquids and antifouling biocides, Habilitation thesis, Universität Bremen, PDF for download
Ranke J (2002) Ecotoxicological Risk Profiles of Chemicals - Concept and Application to Antifouling Biocides, PhD thesis, Universität Bremen, PDF for download, printed edition available from …
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Read tables from documents to R

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This is a short note about reading tables from common office document formats into R.

xls and xlsx

After problems with large worksheets I have turned to using the readxl package.

require(readxl)
sheet_names <- excel_sheets("my_file.xls")
d <- read_excel("my_file.xls", sheet = 1, range = "A3:C7", col_names = TRUE)

docx

Recently …

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New design

Date Modified Lang de

Upon finishing some projects, I found the time to update this web server (from Debian wheezy to Debian jessie) and to give the web site a new design.

And after the start of the new year, the translation of the site to German is completed as well.

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Up and running

Date Lang de

With great pleasure I am introducing my new company in this little weblog posting. The company is simply called “Johannes Ranke, wissenschaftlicher Berater”. This means I am running a one-man scientific consulting company. Continuing from my activities at the University of Bremen, at Harlan Laboratories and most recently at Eurofins …

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