Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Urs Lehmann"'
Publikováno v:
Environmental Science & Technology. 39:2229-2238
Drastic reduction in particle emissions of diesel-powered vehicles and new findings on the health impact of particles raise the question of a more sensitive measurement procedure. In this paper, 16 different particle mass measurement systems are comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a908fdc28926827b97b6450072cf8285
https://doi.org/10.1021/es049550d
https://doi.org/10.1021/es049550d
Publikováno v:
Environmental Science & Technology. 38:5704-5711
The Dekati mass monitor (DMM; Dekati Ltd., Finland), a relatively new real-time mass measurement instrument, was investigated in this project. In contrast to the existing gravimetric filter method also used as a standard for regulation purposes, this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcc125a47bf29e41ca145ed881d41866
https://doi.org/10.1021/es035206p
https://doi.org/10.1021/es035206p
Publikováno v:
Atmospheric Environment. 37:5247-5259
Five in-service engines in heavy-duty trucks complying with Euro II emission standards were measured on a dynamic engine test bench at EMPA. The particulate matter (PM) emissions of these engines were investigated by number and mass measurements. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::363796fa97b889dbee2cf5f0f17b0a45
https://doi.org/10.1016/j.atmosenv.2003.03.001
https://doi.org/10.1016/j.atmosenv.2003.03.001
Publikováno v:
Environmental sciencetechnology. 40(7)
Tail pipe particle emissions of passenger cars, with different engine and aftertreatment technologies, were determined with special focus on diesel engines equipped with a particle filter. The particle number measurements were performed, during trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f75efca47d1d214a0453d61ed90e3f5
https://pubmed.ncbi.nlm.nih.gov/16646477
https://pubmed.ncbi.nlm.nih.gov/16646477
Publikováno v:
SAE Technical Paper Series.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::209264236e849e50251e920c9cdcc933
https://doi.org/10.4271/2003-01-1890
https://doi.org/10.4271/2003-01-1890
Autor:
Martin Mohr, Urs Lehmann
Publikováno v:
International Journal of Vehicle Design. 27:228
New particulate emission measurements performed on a diesel passenger car to see the influence of different configurations of after-treatment systems are reported. Five combinations of a particle trap and an oxidation catalyst are investigated. These
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eab6ab85a28073d42f4da2fd6cb10c01
https://doi.org/10.1504/ijvd.2001.001967
https://doi.org/10.1504/ijvd.2001.001967
Autor:
Urs Lehmann
Publikováno v:
Thin Solid Films. 160:257-269
Cyanine dyes are adsorbed from aqueous solution to Langmuir-Blodgett (LB) films, forming monolayers of Scheibe or J aggregates, whereas the dye in solution is in monomeric state. As well as J aggregates other types of aggregates (H, H∗ aggregates,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04dc4ca6e022d0752c21d7503a586300
https://doi.org/10.1016/0040-6090(88)90069-7
https://doi.org/10.1016/0040-6090(88)90069-7
Autor:
Hans Kuhn, Urs Lehmann
Publikováno v:
Origins of Life. 14:497-504
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8bbaf9bc544f55aa6d345513d50692b
https://doi.org/10.1007/bf00933697
https://doi.org/10.1007/bf00933697
Autor:
Urs Lehmann
Publikováno v:
Biosystems. 17:193-208
A model for the evolution of a translation apparatus has been suggested where oligonucleotides in a hairpin conformation act as primordial adapters. Specifically activated amino acids are assumed to be attached to these hairpin molecules. For the spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb1873643fec25107b664937a1470abb
https://doi.org/10.1016/0303-2647(85)90074-7
https://doi.org/10.1016/0303-2647(85)90074-7
Publikováno v:
The Journal of Chemical Physics. 85:4966-4979
Using a point‐dipole model, we discuss short‐ and long‐range interactions in a 2D array representing a monolayer. Long‐range forces may be treated exactly if the film is homogeneous at the wavelength scale and if the effective polarizability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7285438a299598827da19d1ba1078a9
https://doi.org/10.1063/1.451735
https://doi.org/10.1063/1.451735