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Showing 1 to 12 of 24 entries
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Purge- and intensive-purge decontamination of dental units contaminated with biofilm.

GMS Krankenhaushygiene interdisziplinar

Kramer A, Assadian O, Bachfeld D, Meyer G.
PMID: 22558045
GMS Krankenhhyg Interdiszip. 2012;7(1):Doc11. doi: 10.3205/dgkh000195. Epub 2012 Apr 04.

INTRODUCTION: During hygienic-microbiological monitoring of the water quality in dental units, the total bacterial colony count was found to exceed the limits for drinking water quality; in addition, mold contamination was detected. The presumed cause was irregular decontamination of...

N-heterocyclic carbene-phosphinidyne transition metal complexes.

Angewandte Chemie (International ed. in English)

Doddi A, Bockfeld D, Bannenberg T, Jones PG, Tamm M.
PMID: 25287885
Angew Chem Int Ed Engl. 2014 Dec 01;53(49):13568-72. doi: 10.1002/anie.201408354. Epub 2014 Oct 06.

The N-heterocyclic carbene-phosphinidene adduct IPrPSiMe3 is introduced as a synthon for the preparation of terminal carbene-phosphinidyne transition metal complexes of the type [(IPrP)MLn ] (MLn =(η(6) -p-cymene)RuCl) and (η(5) -C5 Me5 )RhCl). Their spectroscopic and structural characteristics, namely low-field...

Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex.

Beilstein journal of organic chemistry

Ehrhorn H, Schlösser J, Bockfeld D, Tamm M.
PMID: 30344767
Beilstein J Org Chem. 2018 Sep 18;14:2425-2434. doi: 10.3762/bjoc.14.220. eCollection 2018.

The molybdenum and tungsten complexes M

Pentamethylcyclopentadienyl ruthenium "pogo stick" complexes with nitrogen donor ligands.

Dalton transactions (Cambridge, England : 2003)

Peters M, Bannenberg T, Bockfeld D, Tamm M.
PMID: 30843910
Dalton Trans. 2019 Mar 26;48(13):4228-4238. doi: 10.1039/c9dt00577c.

The half-sandwich 1,3-bis(trimethylsilyl)allyl and bis(trimethylsilyl)amido ruthenium complexes [(η5-C5Me5)RuX] (X = η3-C3H3(SiMe3)2, 1; X = N(SiMe3)2, 2) were prepared by reaction of tetranuclear [(η5-C5Me5)RuCl]4 with four equivalents of K[C3H3(SiMe3)2] or Na[N(SiMe3)2]. Complexes 1 and 2 are formally 16- and 14-electron...

N-Heterocyclic carbene-stabilised arsinidene (AsH).

Chemical communications (Cambridge, England)

Doddi A, Weinhart M, Hinz A, Bockfeld D, Goicoechea JM, Scheer M, Tamm M.
PMID: 28466884
Chem Commun (Camb). 2017 Jun 01;53(45):6069-6072. doi: 10.1039/c7cc02628e.

N-Heterocyclic carbene adducts of the parent arsinidene (AsH) were prepared by two different synthetic routes, either by reaction of As(SiMe

Video versus live lecture courses: a comparative evaluation of lecture types and results.

Medical education online

Brockfeld T, Müller B, de Laffolie J, Li Y.
PMID: 30560721
Med Educ Online. 2018 Dec;23(1):1555434. doi: 10.1080/10872981.2018.1555434.

BACKGROUND: Video lectures are an increasingly popular format. They allow an individual choice of time, place and speed of learning.OBJECTIVE: The aim of the present study was to compare whether video lectures are as effective as live lectures to...

Optimizing traffic lights in a cellular automaton model for city traffic.

Physical review. E, Statistical, nonlinear, and soft matter physics

Brockfeld E, Barlovic R, Schadschneider A, Schreckenberg M.
PMID: 11736039
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Nov;64(5):056132. doi: 10.1103/PhysRevE.64.056132. Epub 2001 Oct 30.

We study the impact of global traffic light control strategies in a recently proposed cellular automaton model for vehicular traffic in city networks. The model combines basic ideas of the Biham-Middleton-Levine model for city traffic and the Nagel-Schreckenberg model...

Acute Metabolic Responses to Glucose and Fructose Supplementation in Healthy Individuals: A Double-Blind Randomized Crossover Placebo-Controlled Trial.

Nutrients

Eckstein ML, Brockfeld A, Haupt S, Schierbauer JR, Zimmer RT, Wachsmuth N, Zunner B, Zimmermann P, Obermayer-Pietsch B, Moser O.
PMID: 34836350
Nutrients. 2021 Nov 16;13(11). doi: 10.3390/nu13114095.

The aim of this study was to investigate the impact of glucose (Glu), fructose (Fru), glucose and fructose (GluFru) and sucralose on blood glucose response in healthy individuals. Fifteen healthy individuals (five females, age of 25.4 ± 2.5 years,...

Mercury bioaccumulation in organisms from three Puerto Rican estuaries.

Environmental monitoring and assessment

Burger J, Cooper K, Saliva J, Gochfeld D, Lipsky D, Gochfeld M.
PMID: 24226951
Environ Monit Assess. 1992 Sep;22(3):181-97. doi: 10.1007/BF00419568.

We analyzed mercury levels in shrimp (Palaemonetes sp.), Blue Crabs (Callinectes sp.), fish (Tarpon Megalops atlantica and Tilapia Tilapia mossambica), lizards (Ameiva exsul), Cattle Egret (Bubulcus ibis) and Moorhen (Gallinula chloropus) in three estuaries in Puerto Rico in 1988....

Molecular and Silica-Supported Molybdenum Alkyne Metathesis Catalysts: Influence of Electronics and Dynamics on Activity Revealed by Kinetics, Solid-State NMR, and Chemical Shift Analysis.

Journal of the American Chemical Society

Estes DP, Gordon CP, Fedorov A, Liao WC, Ehrhorn H, Bittner C, Zier ML, Bockfeld D, Chan KW, Eisenstein O, Raynaud C, Tamm M, Copéret C.
PMID: 29083916
J Am Chem Soc. 2017 Dec 06;139(48):17597-17607. doi: 10.1021/jacs.7b09934. Epub 2017 Nov 20.

Molybdenum-based molecular alkylidyne complexes of the type [MesC≡Mo{OC(CH

A modular approach to carbene-stabilized diphosphorus species.

Dalton transactions (Cambridge, England : 2003)

Doddi A, Bockfeld D, Zaretzke MK, Kleeberg C, Bannenberg T, Tamm M.
PMID: 29114655
Dalton Trans. 2017 Nov 21;46(45):15859-15864. doi: 10.1039/c7dt03436a.

Heteroleptic N-heterocyclic dicarbene-diphosphorus species were prepared by reaction of the carbene-phosphinidene adduct (IPr)PSiMe

Unraveling the Mechanism of 1,3-Diyne Cross-Metathesis Catalyzed by Silanolate-Supported Tungsten Alkylidyne Complexes.

Chemistry (Weinheim an der Bergstrasse, Germany)

Schnabel TM, Melcher D, Brandhorst K, Bockfeld D, Tamm M.
PMID: 29676817
Chemistry. 2018 Jun 26;24(36):9022-9032. doi: 10.1002/chem.201801651. Epub 2018 Jun 06.

The benzylidyne complex [PhC≡W{OSi(OtBu)

Showing 1 to 12 of 24 entries