Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Christopher A. Zordan"'
Publikováno v:
Organic Process Research & Development. 21:1272-1285
The objective of this study is to recover Active Pharmaceutical Ingredients (APIs) from tablets via green engineering technology to meet material requirements for downstream formulation development. A separation train, using water as the separation m
Publikováno v:
AAPS PharmSciTech. 17:1173-1181
Complete dissolution of the active pharmaceutical ingredient (API) is critical in the manufacturing of liquid-filled soft-gelatin capsules (SGC). Attenuated total reflectance UV spectroscopy (ATR-UV) and Raman spectroscopy have been investigated for
Autor:
Christopher A. Zordan, Murray V. Johnston, Bryan R. Bzdek, M. Ross Pennington, George W. Luther
Publikováno v:
Environmental Science & Technology. 46:4365-4373
The Nano Aerosol Mass Spectrometer (NAMS) was deployed to rural/coastal and urban sites to measure the composition of 20-25 nm diameter nanoparticles during new particle formation (NPF). NAMS provides a quantitative measure of the elemental compositi
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
Publikováno v:
University of Bristol-PURE
The nano aerosol mass spectrometer (NAMS) was deployed at a coastal site in Lewes, Delaware, to measure the composition of 21 nm mass normalized (18 nm mobility) diameter nanoparticles during new particle formation (NPF) events. NAMS provides a quant
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
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
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
Publikováno v:
Analytical chemistry. 82(19)
The nano aerosol mass spectrometer (NAMS) irradiates individual, size selected nanoparticles with a high energy laser pulse to generate a mass spectrum consisting of multiply charged atomic ions. The elemental composition of the particle is determine
Publikováno v:
Environmental sciencetechnology. 42(17)
Chemical composition measurements of individual ambient nanoparticles were performed with a nanoaerosol mass spectrometer (NAMS) in Wilmington, DE, in May 2006. The atomic composition of each particle was determined from the relative signal intensiti