A5083312189- Crystallization and Solubility Studies
- Spectroscopy and Chemometric Analyses
- Analytical Chemistry and Chromatography
- Spectroscopy Techniques in Biomedical and Chemical Research
- X-ray Diffraction in Crystallography
- Protein purification and stability
- Photochemistry and Electron Transfer Studies
- Spectroscopy and Quantum Chemical Studies
- Cultural Heritage Materials Analysis
- Offshore Engineering and Technologies
- Drilling and Well Engineering
- Enzyme Catalysis and Immobilization
- Microbial Metabolic Engineering and Bioproduction
- Laser-induced spectroscopy and plasma
- Planetary Science and Exploration
- Atmospheric and Environmental Gas Dynamics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Computational Drug Discovery Methods
- Supercapacitor Materials and Fabrication
- Electron Spin Resonance Studies
- Electrochemical Analysis and Applications
- Analytical chemistry methods development
- Viral Infectious Diseases and Gene Expression in Insects
- Geological and Geochemical Analysis
- interferon and immune responses
United States Military Academy
2021-2025
Merck & Co., Inc., Rahway, NJ, USA (United States)
2018-2024
Lancaster University
2021
Merck Institute for Science Education
2018-2020
Merck (Japan)
2018-2020
University of Delaware
2015-2019
Materials Resources (United States)
2018
Newark Hospital
2017
ExxonMobil (Germany)
2004-2016
ExxonMobil (United States)
1982-2008
The emerging fiber‐shaped supercapacitors (FSSs) have motivated tremendous research interest in energy storage devices. However, challenges still exist the pursuit of combination excellent electrochemical performance and mechanical stretchability. Here, a core‐sheath asymmetric FSS is first made by wrapping gel electrolyte coated carbon nanotube (CNT)@MnO 2 core fiber with CNT@PPy composite film. Then stretchable helical structure formed over‐twisting FSS. resulted exhibits specific...
The emergence of stretchable electronic devices has attracted intensive attention. However, most the existing can generally be stretched only in one specific direction and show limited capacitance energy density. Here, we report a isotropic buckled carbon nanotube (CNT) film, which is used as electrodes for supercapacitors with low sheet resistance, high omnidirectional stretchability, electro-mechanical stability under repeated stretching. After acid treatment CNT film followed by...
Cu-exchanged small-pore zeolites (CHA and AEI) form methanol from methane (>95% selectivity) using a 3-step cyclic procedure (Wulfers et al. Chem. Commun. 2015, 51, 4447−4450) with amounts higher than Cu-ZSM-5 Cu-mordenite on per gram Cu basis. Here, the CuxOy species formed Cu-SSZ-13 Cu-SSZ-39 following O2 or He activation at 450 °C are identified as trans-μ-1,2-peroxo dicopper(II) ([Cu2O2]2+) mono-(μ-oxo) ([Cu2O]2+) synchrotron X-ray diffraction, in situ UV–vis, Raman spectroscopy theory....
ABSTRACT Conformal predictions transform a measurable, heuristic notion of uncertainty into statistically valid confidence intervals such that, for future sample, the true class prediction will be included in conformal set at predetermined confidence. In Bayesian perspective, common estimates multivariate classification, namely p ‐values, only provide probability that data fits presumed model, P(D|M) . predictions, on other hand, address more meaningful model data, P(M|D) Herein, two methods...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptically detected time-resolved electron paramagnetic resonance. Excited states and radical ion kinetics in pulse radiolysis of aromatics cyclohexane solutionsJoseph P. Smith Alexander D. TrifunacCite this: J. Phys. Chem. 1981, 85, 12, 1645–1653Publication Date (Print):June 1, 1981Publication History Published online1 May 2002Published inissue 1 June...
A new multivariate curve resolution-alternating least squares (MCR-ALS) methodology is presented that uses approximate reference spectra to determine optimal model complexity for identifying chemical constituents within hyperspectral imaging data.
Biocatalysis is an established technology with significant application in the pharmaceutical industry. Immobilization of enzymes offers benefits for commercial and practical purposes to enhance stability recyclability biocatalysts. Determination spatial chemical distributions immobilized on solid support materials essential optimal catalytic performance. However, current analytical methodologies often fall short rapidly identifying characterizing enzyme systems. Herein, we present a new...
Abstract High-performance non-aqueous drilling fluids (NADFs) are required to meet the challenging technical requirements of many offshore wells. Significant advances have led development advanced NADFs, such as paraffins, olefins and esters, that less toxic more biodegradable than early generation diesel mineral oil base fluids. Advanced NADFs provide necessary performance while ensuring environmentally-sound operations. Three options exist manage waste from NADF-coated drill cuttings:...
The first spectroscopic measurements of chlorine dioxide throughout Antarctic fall, winter, and spring were carried out at McMurdo Station during April to October 1991. Two different observing modes employed extend the over broadest possible seasonal range: direct Moon used as well observations scattered light from sky an 80° angle relative zenith in direction toward Sun. latter scheme facilitates late twilight, when brightness more conventional viewing is much weaker. made using both lunar...
Human papillomaviruses (HPV) are known to cause a variety of diseases, including cervical cancer and genital warts. HPV is highly prevalent virus considered the most common sexually transmitted disease. Because risks associated with HPV, Gardasil, quadrivalent recombinant vaccine, was developed by Merck & Co., Inc., Rahway, NJ, USA, approved Food Drug Administration (FDA) in 2006. The second generation Gardasil9, subsequently FDA 2014, providing significant protection against HPV. vaccine...
The nitrate radical abundance is often measured by making use of its strong absorption visible radiation in a band near 662 nm. We show that this NO 3 feature has negative correlation with water vapor, which requires vapor be explicitly considered attempts to measure from the ground. Concurrent observation second, weaker 623 nm provides an independent means confirming and quantifying accuracy measurement. These considerations are included analysis full year nighttime stratospheric data at...
Biocatalysis has rapidly become an essential tool in the scientific and industrial communities for development of efficient, safe, sustainable chemical syntheses. Immobilization biocatalyst, typically engineered enzyme, offers significant advantages, including increased enzyme stability control, resistance to environmental change, enhanced reusability. Determination optimization spatial distribution immobilized enzymes are critical proper functionality; however, analytical methods currently...
Lunar meteorites provide a more random sampling of the surface Moon than do returned lunar samples, and they valuable information to help estimate chemical composition crust, mantle, bulk Moon. As July 2014, ∼96 had been documented ten these are unbrecciated mare basalts. Using Raman imaging with multivariate curve resolution–alternating least squares (MCR-ALS), we investigated portions polished thin sections paired, unbrecciated, mare-basalt that collected from LaPaz Icefield (LAP)...
Development of an analytical methodology to study enzyme immobilization for use in directed evolution and biocatalysis is presented. Raman hyperspectral imaging with PCA successfully resolved enzyme, resin immobilization-relevant species.
The search for evidence of extant or past life on Mars is a primary objective both the upcoming 2020 rover (NASA) and ExoMars (ESA/Roscosmos) missions. This will involve detection identification organic molecules and/or carbonaceous material within Martian surface environment. For first time mission to Mars, scientific payload each include Raman spectrometer, an instrument well-suited this search. Hematite (α-Fe2O3) widespread mineral surface. 2LO band hematite D-band show spectral overlap,...
Abstract At least 17 spherule layers are presently known within stratigraphic units deposited between ca. 3.47 and 2.49 Ga. The contain varying amounts of formerly molten, millimeter-sized smaller spherules. aggregate thickness spherules in these commonly ranges from ∼1 cm to as much a few decimeters. Several lines evidence support the interpretation that represent distal impact ejecta layers. Previously, only one shock-metamorphosed grain (quartz) had been documented Therefore, key...