Efficient Pyrazolo[5,4‐f]quinoxaline Functionalized Os(II) based Emitter with Electroluminescence Peak Maximum at 811 nm

2021 ◽  
Author(s):  
Ze-Lin Zhu ◽  
Sheng-Fu Wang ◽  
Li-Wen Fu ◽  
Ji-Hua Tan ◽  
Chen Cao ◽  
...  
Keyword(s):  
Peak Maximum

scholarly journals Development of rainfall – runoff model for extreme storm events in the Bagmati River Basin, Nepal

2021 ◽  
Vol 1 (1) ◽  
pp. 158-173
Author(s):  
Nirajan Devkota ◽  
Narendra Man Shrestha
Keyword(s):  
River Basin ◽  
Monsoon Season ◽  
Capital City ◽  
Rainfall Runoff ◽  
Unit Hydrograph ◽  
Peak Maximum ◽  
Hourly Data ◽  
Rainfall Runoff Model ◽  
Bagmati River ◽  
Runoff Model

This study is based on the Bagmati river basin that flows along with the capital city, Kathmandu which is a small and topographically steep basin. Major flood occurring in 1993 and 2002 as stated in the report of DWIDP shows that the basin is subjected to water-induced disaster in monsoon season affecting people and property. This study focuses on the development of a rainfall-runoff model for Bagmati basin in HEC-HMS using the Synthetic Unit Hydrograph (SUH) with Khokana as the outlet. The coefficients for SUH like Lag time coefficient (Ct), peak discharge coefficient (Cp), unit hydrograph widths at 50% and 75% of peak and base time were determined calibrating the Synder’s equation where Ct varies from 0.244 to 1.016 and Cp varies from 0.439 to 0.410. The rainfall-runoff model in HEC-HMS has been calibrated from daily data of 1992-2013 and validated from hourly data for July 2011, August 2012, and July 2013. Furthermore, the model has been tested to compare the discharge for various return periods with the observed ones which are in close agreement. The determination of Peak Maximum Flood (PMF) using the calculated Peak Maximum Precipitation (PMP) is also another application of the model which can be used to design various hydraulic structures. Thus the values of coefficients, Ct and Cp can be used to construct unit hydrograph for the basin. Moreover, the satisfactory performance of the model during calibration and validation proves the applicability of the model in flood forecasting and early warning.

Trends in Finger Pinch Strength in Children, Adults, and the Elderly

1989 ◽  
Vol 31 (6) ◽  
pp. 689-701 ◽  
Author(s):  
Sheik N. Imrhan
Keyword(s):  
Age Groups ◽  
Quantitative Relationship ◽  
The Elderly ◽  
Pinch Strength ◽  
Age Group ◽  
Strength Ratio ◽  
Empirical Relationships ◽  
Experimental Conditions ◽  
Peak Maximum ◽  
Different Types

This study explores empirical relationships among different types of pinches in three age groups. Peak maximum voluntary forces of several pinches-lateral, chuck, and pulp pinches with digits 2, 3, 4, and 5-were tested in 182 subjects comprising 62 children (5-12 years), 70 adults (18-40 years), and 50 elderly (60-89 years). Analysis of the forces indicated four groups of strength magnitude: (1) lateral and chuck, (2) pulp 2 and 3, (3) pulp 4, and (4) pulp 5, in that order; the strength of each type of pinch bears a definite quantitative relationship to every other type, regardless of age group or gender. The female-to-male strength ratio was greatest in children (89%) and least in adults (69%). Comparison with other pinch strength studies established that although force magnitudes may be strongly influenced by specific experimental conditions, empirical relationships among different pinch forces are fairly stable and predictable.

Deconvolution of Powder Diffraction Spectra

1987 ◽  
Vol 2 (3) ◽  
pp. 130-136 ◽  
Author(s):  
K. E. Wiedemann ◽  
J. Unnam ◽  
R. K. Clark
Keyword(s):  
Powder Diffraction ◽  
Random Error ◽  
Resolution Enhancement ◽  
Discrete Data ◽  
Peak Position ◽  
Crystal Defects ◽  
Peak Maximum

AbstractAn improved deconvolution theory is presented for the resolution enhancement in powder diffraction spectra. In powder patterns, diffracted intensity, which is conceptually located at a single 2θ position, is actually distributed over a range of 2θ because of instrumental factors, crystal defects, beam penetration, and sample flatness. The location of the peak is usually taken as the peak maximum or the peak centroid. However, when interpreting complex spectra these approaches to locating peaks are not straightforward and deconvolution can be a useful tool. The method presented herein enhances resolution without altering peak area or peak position. Comparisons are made with results of other methods, with emphasis on deconvoluting spectra that contain random error. The discussion includes treatment of discrete data and analysis of the properties of the solution.

scholarly journals The Effect of Polyvinylpyrrolidone on the Optical Properties of the Ni-Doped ZnS Nanocrystalline Thin Films Synthesized by Chemical Method

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Tran Minh Thi ◽  
Le Van Tinh ◽  
Bui Hong Van ◽  
Pham Van Ben ◽  
Vu Quoc Trung
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Chemical Method ◽  
Energy Transition ◽  
Transition Process ◽  
Peak Position ◽  
Time Resolved ◽  
Pl Spectra ◽  
Peak Maximum ◽  
Nanocrystalline Thin Films

We report the optical properties of polyvinyl-pyrrolidone (PVP) and the influence of PVP concentration on the photoluminescence spectra of the PVP (PL) coated ZnS : Ni nanocrystalline thin films synthesized by the wet chemical method and spin-coating. PL spectra of samples were clearly showed that the 520 nm luminescence peak position of samples remains unchanged, but their peak intensity changes with PVP concentration. The PVP polymer is emissive with peak maximum at 394 nm with the exciting wavelength of 325 nm. The photoluminescence exciting (PLE) spectrum of PVP recorded at 394 nm emission shows peak maximum at 332 nm. This excitation band is attributed to the electronic transitions in PVP molecular orbitals. The absorption edges of the PVP-coated ZnS : Ni0.3% samples that were shifted towards shorter wavelength with increasing of PVP concentration can be explained by the absorption of PVP in range of 350 nm to 400 nm. While the PVP coating does not affect the microstructure of ZnS : Ni nanomaterial, the analyzed results of the PL, PLE, and time-resolved PL spectra and luminescence decay curves of the PVP and PVP-coated ZnS : Ni samples allow to explain the energy transition process from surface PVP molecules to the Ni2+centers that occurs via hot ZnS.

scholarly journals Relationship between Infrared Peak Maximum Position and Molecular Interactions

2011 ◽  
Vol 32 (11) ◽  
pp. 4011-4015 ◽  
Author(s):  
Soo-Ryeon Ryu ◽  
Isao Noda ◽  
Young-Mee Jung
Keyword(s):  
Molecular Interactions ◽  
Peak Maximum

scholarly journals A study of the relationship of maximal perioral muscle pressure to tonic resting pressure using a pneumohydraulic capillary infusion system

1990 ◽  
Vol 16 (3) ◽  
pp. 11-15
Author(s):  
Erwin Lubit ◽  
◽  
Mark Wallach ◽  
Ronald Schwalb
Keyword(s):  
Significant Relationship ◽  
High Peak ◽  
Diagnostic Aid ◽  
Peak Maximum ◽  
Resting Pressure ◽  
Relationship Of ◽  
Peak Pressures ◽  
The Relationship ◽  
Infusion System

The tonic (resting) and peak (maximum) lip pressures of 100 subjects were measured. The purpose was to evaluate the validity of the assumption that high peak pressures are indicative of high tonic pressures and vice versa. This paper describes the equipment and techniques devised to test these pressures. The results showed no statistically significant relationship whatsoever between tonic and peak lip pressures. We, therefore, suggest that maximum lip pressures not be used as a diagnostic aid in orthodontics. [Reprinted from The Angle Orthodontist, Fall 1990, vol. 60, pages 215-220]

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