Total internal partition sums (TIPS) are reported for 166 isotopologues of 51 molecules important in planetary atmospheres. Molecules 1 to 50 are taken from the HITRAN2016 list, and, in some cases, additional isotopologues are considered for some of the molecules. Molecules 51-53 are C 3 H 4 , CH 3 , and CS 2 , respectively. TIPS are not reported for the O atom and CF 4 ; thus, while there are 53 molecules in the list, data are reported for 51 molecules. The TIPS are determined by various methods from 1 K to a T max that ensures the TIPS reported have converged. These data are provided with HITRAN2016 and a new version of the TIPS code is available in both FORTRAN and python languages.
The method of k-means cluster analysis is applied to U.S. wintertime daily 850-hPa winds across the Northeast. The resulting weather patterns are analyzed in terms of duration, station, gridded precipitation, storm tracks, and climate teleconnections. Five distinct weather patterns are identified. Weather type (WT) 1 is characterized by a ridge over the western Atlantic and positive precipitation anomalies as far north as the Great Lakes; WT2, by a trough along the eastern United States and positive precipitation anomalies into southern New England; WT3, by a trough over the western Atlantic and negative precipitation anomalies along much of the U.S. East Coast; WT4, by a trough east of Newfoundland and negative precipitation anomalies along parts of the U.S. East Coast; and WT5, by a broad, shallow trough over southeastern Canada and negative precipitation anomalies over the entire U.S. East Coast. WT5 and WT1 are the most persistent, while WT2 typically progresses quickly to WT3 and then to WT4. Based on mean station precipitation in the northeastern United States, most precipitation occurs in WT2 and WT3, with the least in WT1 and WT4. Extreme precipitation occurs most frequently in WT2. Storm tracks show that WT2 and WT3 are associated with coastal storms, while WT2 is also associated with Great Lakes storms. Teleconnections are linked with a change in WT frequency by more than a factor of 2 in several cases: for the North Atlantic Oscillation (NAO) in WT1 and WT4 and for the Pacific–North American (PNA) pattern in WT1 and WT3.
We expand upon the traditional narrow-band array signal processing model by incorporating the effects of mutual coupling via a closed form expression for the array impedance matrix. The mutual coupling matrix affects the incident signal like a set of narrow-band beamformers; this interpretation is explored. We examine the array's super-resolution DF (SRDF) behavior/performance in the presence of mutual coupling. Simulation results examine the effects of mismatch in antenna termination impedance upon DF performance, using parameters from a typical mobile cellular radio environment scenario. The results indicate that array DF performance can be improved by mismatching the array terminations, thus reducing the effect of mutual coupling.
This paper addresses the benefits of cueing an electro-optical (EO) payload by employing communications signal direction finding techniques. By using signal collection, signal processing and direction finding techniques to cue an optical sensor, the efficiency of target location, detection and recognition missions is greatly increased. The paper analyzes the effectiveness of a system which is currently implemented on a small platform unmanned aerial vehicle (UAV) and is highly effective in the VHF/UHF frequency range. The system is both low -cost and reliable, important considerations in modern airborne reconnaissance.The paper emphasizes the optical payload operational benefit in terms of flight, time versus target detection time with and without communication signal DF cueing. Typical mission scenarios are presented including the impact of short signal emission times (i.e. push -to -talk radios), signal types and DF sensor accuracy. Diagrams of the sensor will be shown and data collected during real and simulated flights will be used as input to a simulation model to predict a high efficiency of operation for a tactical optical reconnaissance mission.
This paper describes a method of utilizing UV lasers, given fluorophore (sample). Typically fluorescence lifetimes detectors, and a high-speed digital signal processor (DSP)-based are generally on the order of 1-10 nsec [1]. digitizer to measure the fluorescence lifetime of fluorophores.Fluorescence lifetime measurements require a pulsedThe aim of the design is to create a low cost compact device which guarantees ease of use while not compromising performance. An exitation soucSic t crer izatin turs of ultrafast photomultiplier tube coupled with an excitation light lasers vary, a specific laser is needed which 1nth1s case a filter is used to characterize accurately the fluorescence emission pulsed blue violet laser diode was used ). from the sample. The results obtained from several material These lasers operate at a short wavelength of about 405 nm; specimens are presented. their typical threshold current for a continuous wave operation is about 35 mA, with 55 mA being the maximum. The typical Index Terms-Fluorescence, lifetime spectroscopy, laser continuous wave emission power on this laser iS about 7 mW. applications, high-speed undersampling, swept delay, otnoswv msinpwro hslsri bu W piocations This laser is used to excite the sample and the light from the biodetection. sample is collected using a detector. The most common detectors for low level detection of light are the I. INTRODUCTION photomultiplier tubes. Photomultiplier tubes (PMTs) are extremely sensitive detectors of light in the ultraviolet, visible luorescence spectroscopy has been experiencing and near-infrared. The operating voltage is 15 V along with an remarkable growth over the last two decades where it has adjustable input control voltage. The Hamamatsu H5783 PMT found extensive use in biology and biochemistry [1]. was preferred since it does not have an amplifier allowing it to Applications include identification of tumor-associated detect fast rise and fall decay times. Optical filters were usedproteins, molecular classification for disease diagnosis, to control the spectra of the excitation light and fluorescence identification of therapeutic markers and targets, and basic emission light. These filters help the detector to detect only biological research [2]. Fluorescence measurements have also fluorescence emission light without interference from the helped to identify protein crystals [3]. Fluorescence is widely excitation light. Here in this experiment the photons detected used in biotechnology and analytical applications due to its by the PMT create a voltage signal that can be sampled by a extraordinary sensitivity, high specificity, simplicity, and low high-speed undersampling digitization process. cost compared to other analytical techniques [4]. The paper is organized into five sections. Section II The main focus of the work described here is the explains the design of the fluorescence and electronics development of new adaptive algorithms for fluorescence components. Section III details the method of measuring the lifetime measure...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.