Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Joseph P, Klems"'
Autor:
Lauren K. Markell, Robert T. Mingoia, John C. O'Connor, Joseph P. Klems, Brian C. Sayers, Ruijuan Luo
Publikováno v:
Regulatory Toxicology and Pharmacology. 119:104820
The rodent uterotrophic and Hershberger assays evaluate potential estrogenic and (anti)-androgenic effects, respectively. Both US EPA and OECD guidelines specify that test substance is administered daily either by subcutaneous injection or oral gavag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::932378b005c24cf9f58c2161f10f9e26
https://doi.org/10.1016/j.yrtph.2020.104820
https://doi.org/10.1016/j.yrtph.2020.104820
Publikováno v:
The Journal of Physical Chemistry A. 117:14141-14150
Recent studies have shown that 254 nm light can be used to generate organic aerosol from iodoalkane/air mixtures via photodissociation of the C-I bond and subsequent oxidation of the alkyl radical. We examine organic aerosol formed from the 1-iodooct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c572226f16601ed019ce5acbe67b71d
https://doi.org/10.1021/jp4094996
https://doi.org/10.1021/jp4094996
Autor:
Murray V. Johnston, Joseph P. Klems
Publikováno v:
Analytical and Bioanalytical Chemistry. 405:6995-7003
In the nano-aerosol mass spectrometer, individual particles in the 10–30 nm size range are trapped and irradiated with a high pulse energy laser beam. The laser pulse generates a plasma that disintegrates the particle into atomic ions, from which t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d38810c872edff837e3b2b4c733df3d3
https://doi.org/10.1007/s00216-013-6800-x
https://doi.org/10.1007/s00216-013-6800-x
Publikováno v:
Analytical Chemistry. 84:2253-2259
The nano aerosol mass spectrometer provides a quantitative measure of the elemental composition of individual, ambient nanoparticles in the 10-30 nm size range. In this work, carbon mole fraction plots are introduced as an efficient means of visualiz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a290b19a28b1c1608781481c9f173c3f
https://doi.org/10.1021/ac202868h
https://doi.org/10.1021/ac202868h
Autor:
Christopher A. Zordan, M. Ross Pennington, Murray V. Johnston, Joseph P. Klems, Lauren McFadden
Publikováno v:
Environmental Science & Technology. 45:5637-5643
High frequency spikes in ultrafine number concentration near a roadway intersection arise from motor vehicles that accelerate after a red light turns green. The present work describes a method to determine the contribution of motor vehicles to the to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a6de608ddee80c40a9e70ab7f6345cb
https://doi.org/10.1021/es104228q
https://doi.org/10.1021/es104228q
Publikováno v:
Environmental Science & Technology. 44:7903-7907
A wavelet-based algorithm was implemented to separate the high frequency portion of ambient nanoparticle measurements taken during the summer and winter of 2009 in Wilmington, Delaware. These measurements included both number concentration and size d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::302bce87877063e9ee6199987e250721
https://doi.org/10.1021/es102009e
https://doi.org/10.1021/es102009e
Publikováno v:
The journal of physical chemistry. A. 119(2)
Quantitative evidence is presented for the importance of alkyl peroxy photochemistry in the formation of secondary organic aerosol at 254 nm. Particles were generated by extensively oxidizing dodecanoic acid with photolytically generated hydroxyl rad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::566c39dc737cf7f4a5c7f65aa2171dca
https://pubmed.ncbi.nlm.nih.gov/25495485
https://pubmed.ncbi.nlm.nih.gov/25495485
Autor:
Murray V, Johnston, Joseph P, Klems, Christopher A, Zordan, M Ross, Pennington, James N, Smith
Publikováno v:
Research report (Health Effects Institute). (173)
Numerous studies have shown that exposure to motor vehicle emissions increases the probability of heart attacks, asthma attacks, and hospital visits among at-risk individuals. However, while many studies have focused on measurements of ambient nanopa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5ff8df9039e3055702c4aeab451f228a
https://pubmed.ncbi.nlm.nih.gov/23614271
https://pubmed.ncbi.nlm.nih.gov/23614271
Publikováno v:
AIP Conference Proceedings.
The composition of secondary organic aerosol particles is of primary importance both in identifying particle sources and in determining physical parameters, such as cloud condensation nucleus propensity. Further, measurements of composition are valua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6ab3d552cba2fc16a1e75d1efe54e0c
https://doi.org/10.1063/1.4803301
https://doi.org/10.1063/1.4803301
Publikováno v:
Journal of Geophysical Research: Atmospheres. 117
[1] The Nano Aerosol Mass Spectrometer (NAMS) was deployed to the California Nexus Los Angeles ground site in Pasadena, California during May–June 2010 to study nanoparticles in the 20–25 nm size range. NAMS gives a quantitative measure of the el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffea0195a440ec50e394e3bbf312c364
https://doi.org/10.1029/2011jd017061
https://doi.org/10.1029/2011jd017061