A5018246003- Geology and Paleoclimatology Research
- Marine and environmental studies
- Spectroscopy and Quantum Chemical Studies
- Paleontology and Stratigraphy of Fossils
- Maritime and Coastal Archaeology
- History of Science and Natural History
- Marine Biology and Ecology Research
- History of Science and Medicine
- Neurology and Historical Studies
- Microfluidic and Bio-sensing Technologies
- Neuroscience, Education and Cognitive Function
- Nanopore and Nanochannel Transport Studies
- Evolution and Paleontology Studies
- Microfluidic and Capillary Electrophoresis Applications
- Spectroscopy and Laser Applications
- Oceanographic and Atmospheric Processes
- Cephalopods and Marine Biology
- Human Health and Disease
- Advanced Chemical Physics Studies
- Effects of Environmental Stressors on Livestock
- Marine and fisheries research
- Ocean Acidification Effects and Responses
- Paleontology and Evolutionary Biology
- Global Energy and Sustainability Research
- Comparative Animal Anatomy Studies
Stanford University
2022-2024
University of Chicago
2016-2023
Chicago Institute for Psychoanalysis
2016-2021
Protochips (United States)
2014-2015
Office of Infectious Diseases
2013
University of North Carolina at Charlotte
1977
United States Department of Agriculture
1975-1977
Directorate of Weed Research
1975-1977
University of California, Davis
1977
Quality Research
1977
Hydrogen bonds (H-bonds) can be interpreted as a classical electrostatic interaction or covalent chemical bond if the is strong enough. As result, short H-bonds exist at an intersection between qualitatively different bonding descriptions, with few experimental methods to understand this dichotomy. The [F-H-F]- ion represents bare H-bond, whose distinctive vibrational potential in water revealed femtosecond two-dimensional infrared spectroscopy. It shows superharmonic behavior of proton...
A molecular description of the structure and behavior water confined in aluminosilicate zeolite pores is a crucial component for understanding acid chemistry under hydrous conditions. In this study, we use combination ultrafast two-dimensional infrared (2D IR) spectroscopy ab initio dynamics (AIMD) to study H2O highly hydrated HZSM-5 (∼13 ∼6 equivalents per Al atom). The 2D IR spectrum reveals correlations between vibrations both terminal H-bonded O–H groups continuum absorption excess...
Water's ability to donate and accept hydrogen bonds leads unique complex collective dynamical phenomena associated with its hydrogen-bond network. It is appreciated that the vibrations governing liquid water's molecular dynamics are delocalized, nuclear motion evolving coherently over span of several molecules. Using two-dimensional infrared spectroscopy, we have found motions heavy water, D2O, qualitatively different than those H2O. The nonlinear spectrum D2O reveals distinct O–D stretching...
The long-range influence of ions in solution on the water hydrogen-bond (H-bond) network remains a topic vigorous debate. Recent spectroscopic and theoretical studies have, for most part, reached consensus that weakly coordinating only affect molecules first hydration shell. Here, we apply ultrafast broadband two-dimensional infrared (2D IR) spectroscopy to aqueous nitrate carbonate neat H2O study solvation structure dynamics opposite ends Hofmeister series. By exciting both OH stretches ion...
The local environmental sensitivity of infrared (IR) spectroscopy to a hydrogen-bonding structure makes it powerful tool for investigating the and dynamics excess protons in water. Although significant interest, line broadening that results from ultrafast evolution different solvated proton-water structures assignment liquid-phase IR spectra challenging task. In this work, we apply normal mode analysis using density functional theory thousands clusters taken reactive molecular trajectories...
Liquid water’s rich sub-picosecond vibrational dynamics arise from the interplay of different high- and low-frequency modes evolving in a strong yet fluctuating hydrogen bond network. Recent studies OH stretching excitations H2O indicate that they are delocalized over several molecules, raising questions about whether bending vibrations similarly delocalized. In this paper, we take advantage an improved 50 fs time-resolution broadband infrared (IR) spectroscopy to interrogate 2D IR lineshape...
In the pursuance of his plan minutely examining certain typical forms Foraminifera, for purpose elucidating their history as living beings, and determining value characters they present to systematist, author in this memoir details results investigations on genera, Orbiculina, Alveolina, Cycloclypeus , Heterostegina . The genus Orbiculina has long been known, through its prevalence West Indian seas, which causes shells abound shore-sands many islands that region. These great varieties form,...
The following Extracts from the Minutes of Council Royal Society set forth origin 'Porcupine’ Expedition, and objects which it was designed to carry out. January 21, 1869. Preliminary Report Dredging Operations conducted by Drs. Carpenter Wyville Thomson (in ‘Lightning’) having been considered, Resolved,—That, looking valuable results obtained these Marine Researches, restricted in scope as they have a first trial, President consider most desirable, with view advancement Zoology other...
ABSTRACT After the lapse of five years Dr. Carpenter follows with his promised introduction to Professor Williamson’s recent ‘Foraminifcra.’ The subscribers Ray Society, like other unreasonable people, have undoubtedly complained delay. But no one, we think, who understands nature scientific research will feel that Society lost anything. To be sure, makes a large vacancy in any man’s existence, but then, when it has been industriously used, what may not advantage ? That employed members and...
In accordance with the request of President and Council Royal Society, conveyed in Letter written by their direction to Secretary Admiralty on 18th June (Appendix), Lords Commissioners were pleased give sanction scheme for Deep-sea Dredging therein proposed, furnish means carrying it out as effectively advanced period season might permit. 2. The Surveying-ship ‘Lightning’ was assigned service, furnished a “donkey-engine,” all other appliances required work, together most approved...
ABSTRACT The sixth edition of a work nearly one thousand pages is no mean testimony to its worth. We shall not, therefore, attempt criticise this work, but simply afford our readers the means judging whether new has kept up with predecessors in those departments where use microscope necessary. are not sure that supererogation. Researches country do at all command attention which their importance demands, and if we examine records own societies compared other countries Europe, it very...