130,740 research outputs found
Advertisement from Topf & Sons
No full textFront: Blue printed German text with Topf logo in top left; Back: More printed text with Topf logo at bottom.
Information Provided by Michael D. Bulmash:
Topf & Sons designed, built and perfected the crematoria at the Auschwitz, Buchenwald, Belzec, Dachau, Mauthausen and Gusen camps. The leaflet lists their slogan (“Performance decides”) and various product lines: smokestacks, furnaces, etc. Verso is a company description. Topf speaks glowingly about their new leadership and spirit since 1933, the Third Reich’s first year.https://digital.kenyon.edu/bulmash/2317/thumbnail.jp
J.A. Topf & Sohne Receipt
No full textSmall paper with title, Quittung. Includes several stamps and signatures, and a stamp on back.
Information Provided by Michael D. Bulmash:
Receipt from Topf and Sons, manufacturers of the crematoria. This receipt is for muffles for an oven for 200 Reichmarks.https://digital.kenyon.edu/bulmash/1719/thumbnail.jp
J.A. Topf & Sohne Erfurt Brochure
No full textFront: White brochure with black text and green accents. Large picture of the malt-drying machines done in black take up most of the cover. Green accents at the top and bottom \u27J.A. Topf & Söhne\u27 stamped in red at the top. \u27J.A. Topf & Söhne Erfurt\u27 in large black letters on the top.
Information Provided by Michael D. Bulmash:
Brochure from the 1940s of malt-drying machine manufactured by the engineering firm that gave us the crematoria - the incineration furnaces - at concentration camps such as Auschwitz.https://digital.kenyon.edu/bulmash/1566/thumbnail.jp
Fe2O3/NGr@C- and Co–Co3O4/NGr@C-catalysed hydrogenation of nitroarenes under mild conditions
No full textAn improved hydrogenation of nitroarenes using nano-structured iron- and cobalt-based catalysts is
presented. Modifications of the heterogeneous catalysts by N-doped graphene-flakes are crucial for the
success of selective reductions. The use of polar solvents and basic additives has a significant positive influence
on the rate of reduction of nitroarenes. This allows performing non-noble metal-catalysed hydrogenations
under very mild reaction conditions (e.g. 70 °C and 20 bar). On the basis of the obtained catalytic
results a heterolytic mechanism for the hydrogenation process is postulated, to
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Neue Ein-Topf-Sequenzen auf der Basis cyclisierender Isomerisierungen von In-Allylalkoholen
No full textIn palladium- und rhodiumkatalysierten Alder-En-analogen Reaktionen wurden In-Allylalkohol-Substrate cycloisomerisiert, die dann in einer anschließenden Tautomerie zu den entsprechenden y,d-Enalen umlagerten. Daneben wurden in Heck-Carbopalladierungsreaktionen ebenfalls In-Allylalkohole eingesetzt, die in einer Folge aus Carbopalladierung, Heck-Reaktion und anschließender Tautomerie ebenfalls y,d-Enale bildeten. Diese so gebildeten y,d-Enale wurden als Diversitätsmodule benutzt, um Konsekutivreaktionen im Ein-Topf-Verfahren anzuschließen. Hier konnte eine Reihe von Konsekutivreaktionen durchgeführt werden, darunter Wittig-Olefinierungen, reduktive Aminierungen und Knoevenagel-Kondensationen, die die Diversität und Komplexität der Reaktionsprodukte enorm erhöhten
RIBFIND: a web server for identifying rigid bodies in protein structures and to aid flexible fitting into cryo EM maps
No full textMotivation: To better analyze low-resolution cryo electron microscopy maps of macromolecular assemblies, component atomic structures frequently have to be flexibly fitted into them. Reaching an optimal fit and preventing the fitting process from getting trapped in local minima can be significantly improved by identifying appropriate rigid bodies in the fitted component.
Results: Here we present the RIBFIND server, a tool for identifying rigid bodies in protein structures. The server identifies rigid bodies in proteins by calculating spatial proximity between their secondary structural elements.
Availability: The RIBFIND web server and its standalone program are available at http://ribfind.ismb.lon.ac.uk
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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