Relevant bibliographies by topics / PEAK2

Academic literature on the topic 'PEAK2'

Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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Journal articles on the topic "PEAK2"

Song, Jaewoo, Eunyoung Lee, Yula Jeon, Ji Eun Jang, Yundeok Kim, June-Won Cheong, and Yoo Hong Min. "Improved Sensitivity and Discriminative Power of Factor FVIII Assay By Applying Turbidimetric Clotting Curve Analysis." Blood 124, no. 21 (December 6, 2014): 2853. http://dx.doi.org/10.1182/blood.v124.21.2853.2853.

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Abstract Background: The need for sensitive detection of coagulation factor between the levels of 0.0 and1.0% is now growing continuously. The most popular method of measuring factor VIII (FVIII) activity is one stage clotting time (activated partial thromboplastin time, APTT)-based assay. From the first and the second derivatives of the original turbidimetric curve, the velocity and acceleration of clot formation can be followed and parameters like maximum velocity (peak1) and acceleration (peak2) of clot formation can also be derived. We examined the limit of detection of FVIII activities measured based on clotting time, peak1 and peak2, following the recommendations from Clinical and Laboratory Standards Institute guideline. Method: We performed APTT with sample/reagent volume and incubation time modified to be identical to those adopted for factor assay on factor deficient plasma as blank and plasmas prepared to have variable FVIII activities from 0.1 to 1.6%. Peak1 and Peak2 were also measured to determine the limit of blank (LoB) and limit of detection (LoD) corresponding to each parameter. Also, by modifying the method of LoB and LoD determination, we determined lower limit of 1.0% (lower Lo1) corresponding to each parameter. Results: The mean clotting time of blank sample (FVIII 0.0%) was 131.4 ± 1.90 seconds (mean ± SD). Thus, 95% of clotting times measured from a blank sample (FVIII 0.0%) are longer than 128.3 seconds, which was determined to be the LoB for clotting time. The pooled standard deviation (SD) of clotting times measured from low FVIII samples was 2.29 seconds and 124.49 seconds which was the theoretically minimum value that was statistically different from LoB was set as the clotting time corresponding to LoD of FVIII. The LoD clotting time was between the clotting times of FVIII 0.2% and FVIII 0.4% sample and 0.4% was safely determined to be LoD of FVIII. This implied that plasma sample with at least 0.4% FVIII level was guaranteed to be measured higher than blank (FVIII 0.0%) sample. The mean peak1 height for blank sample was 21.4 ± 0.68 and LoB peak height was determined to be 22.53. The pooled SD for peak1 height was 0.68 and peak1 height of LoD was calculated to be 23.63. Because the mean peak1 height for 0.2% sample was 24.27, the LoD FVIII activity could be safely determined to be 0.2%. Thus, by applying peak1 as primary measure to estimate FVIII activity, the sensitivity of FVIII assay was increased with lower LoD of 0.2% compared with clotting time based assay. For peak2 height, LoB and LoD peak2 height were 14.86 and 18.59 respectively and The LoD could be set at FVIII 0.4%. Next, we determined lower Lo1, which meant FVIII level that was guaranteed to be measured significantly lower than 1.0% sample. For clotting time, lower Lo1 was FVIII 0.2% and for peak1 and 2 FVIII, was 0.4%. These results implied that by conventional clotting time based FVIII assay FVIII activity between 0.0 and 1.0% could not be measured credibly. FVIII should be at least 0.4% to be ever detected but ironically FVIII should be less than 0.2% to be assuredly measured lower than 1.0%. However, with peak1 there was an interval of FVIII value that could be assured to be measured higher than 0.0% but lower than 1.0%. Conclusion: We concluded that the maximum clotting velocity derived from turbidimetric curve analysis can be applied to measure FVIII activity between 0.0 and 1.0% credibly. Disclosures No relevant conflicts of interest to declare.

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Ounoughene, Youcef, Elise Fourgous, Yvan Boublik, Estelle Saland, Nathan Guiraud, Christian Recher, Serge Urbach, et al. "SHED-Dependent Oncogenic Signaling of the PEAK3 Pseudo-Kinase." Cancers 13, no. 24 (December 17, 2021): 6344. http://dx.doi.org/10.3390/cancers13246344.

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The PEAK1 and Pragmin/PEAK2 pseudo-kinases have emerged as important components of the protein tyrosine kinase pathway implicated in cancer progression. They can signal using a scaffolding mechanism that involves a conserved split helical dimerization (SHED) module. We recently identified PEAK3 as a novel member of this family based on structural homology; however, its signaling mechanism remains unclear. In this study, we found that, although it can self-associate, PEAK3 shows higher evolutionary divergence than PEAK1/2. Moreover, the PEAK3 protein is strongly expressed in human hematopoietic cells and is upregulated in acute myeloid leukemia. Functionally, PEAK3 overexpression in U2OS sarcoma cells enhanced their growth and migratory properties, while its silencing in THP1 leukemic cells reduced these effects. Importantly, an intact SHED module was required for these PEAK3 oncogenic activities. Mechanistically, through a phosphokinase survey, we identified PEAK3 as a novel inducer of AKT signaling, independent of growth-factor stimulation. Then, proteomic analyses revealed that PEAK3 interacts with the signaling proteins GRB2 and ASAP1/2 and the protein kinase PYK2, and that these interactions require the SHED domain. Moreover, PEAK3 activated PYK2, which promoted PEAK3 tyrosine phosphorylation, its association with GRB2 and ASAP1, and AKT signaling. Thus, the PEAK1-3 pseudo-kinases may use a conserved SHED-dependent mechanism to activate specific signaling proteins to promote oncogenesis.

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Romanenko, S. V., A. G. Stromberg, and T. N. Pushkareva. "Modeling of analytical peaks: Peaks properties and basic peak functions." Analytica Chimica Acta 580, no. 1 (October 2006): 99–106. http://dx.doi.org/10.1016/j.aca.2006.07.050.

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Shi, Chenfu, Magnus Rattray, and Gisela Orozco. "HiChIP-Peaks: a HiChIP peak calling algorithm." Bioinformatics 36, no. 12 (March 24, 2020): 3625–31. http://dx.doi.org/10.1093/bioinformatics/btaa202.

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Abstract Motivation HiChIP is a powerful tool to interrogate 3D chromatin organization. Current tools to analyse chromatin looping mechanisms using HiChIP data require the identification of loop anchors to work properly. However, current approaches to discover these anchors from HiChIP data are not satisfactory, having either a very high false discovery rate or strong dependence on sequencing depth. Moreover, these tools do not allow quantitative comparison of peaks across different samples, failing to fully exploit the information available from HiChIP datasets. Results We develop a new tool based on a representation of HiChIP data centred on the re-ligation sites to identify peaks from HiChIP datasets, which can subsequently be used in other tools for loop discovery. This increases the reliability of these tools and improves recall rate as sequencing depth is reduced. We also provide a method to count reads mapping to peaks across samples, which can be used for differential peak analysis using HiChIP data. Availability and implementation HiChIP-Peaks is freely available at https://github.com/ChenfuShi/HiChIP_peaks. Supplementary information Supplementary data are available at Bioinformatics online.

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Kalesse, Heike, Teresa Vogl, Cosmin Paduraru, and Edward Luke. "Development and validation of a supervised machine learning radar Doppler spectra peak-finding algorithm." Atmospheric Measurement Techniques 12, no. 8 (August 30, 2019): 4591–617. http://dx.doi.org/10.5194/amt-12-4591-2019.

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Abstract. In many types of clouds, multiple hydrometeor populations can be present at the same time and height. Studying the evolution of these different hydrometeors in a time–height perspective can give valuable information on cloud particle composition and microphysical growth processes. However, as a prerequisite, the number of different hydrometeor types in a certain cloud volume needs to be quantified. This can be accomplished using cloud radar Doppler velocity spectra from profiling cloud radars if the different hydrometeor types have sufficiently different terminal fall velocities to produce individual Doppler spectrum peaks. Here we present a newly developed supervised machine learning radar Doppler spectra peak-finding algorithm (named PEAKO). In this approach, three adjustable parameters (spectrum smoothing span, prominence threshold, and minimum peak width at half-height) are varied to obtain the set of parameters which yields the best agreement of user-classified and machine-marked peaks. The algorithm was developed for Ka-band ARM zenith-pointing radar (KAZR) observations obtained in thick snowfall systems during the Atmospheric Radiation Measurement Program (ARM) mobile facility AMF2 deployment at Hyytiälä, Finland, during the Biogenic Aerosols – Effects on Clouds and Climate (BAECC) field campaign. The performance of PEAKO is evaluated by comparing its results to existing Doppler peak-finding algorithms. The new algorithm consistently identifies Doppler spectra peaks and outperforms other algorithms by reducing noise and increasing temporal and height consistency in detected features. In the future, the PEAKO algorithm will be adapted to other cloud radars and other types of clouds consisting of multiple hydrometeors in the same cloud volume.

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Folley, Joe P. "Systematic errors in the measurement of peak area and peak height for overlapping peaks." Journal of Chromatography A 384 (January 1987): 301–13. http://dx.doi.org/10.1016/s0021-9673(01)94679-5.

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Striegel, André M., and Deborah A. Striegel. "Peak Fraction Purity and Chromatographic Resolution: Gaussian Peaks Revisited." Chromatographia 85, no. 1 (January 2022): 65–72. http://dx.doi.org/10.1007/s10337-021-04112-0.

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Radetzki, Marian. "Peak Oil and other threatening peaks—Chimeras without substance." Energy Policy 38, no. 11 (November 2010): 6566–69. http://dx.doi.org/10.1016/j.enpol.2010.07.049.

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Sunta, C. M., Ayta W. E. Feria, T. M. Piters, and S. Watanabe. "Limitation of peak fitting and peak shape methods for determination of activation energy of thermoluminescence glow peaks." Radiation Measurements 30, no. 2 (April 1999): 197–201. http://dx.doi.org/10.1016/s1350-4487(99)00033-5.

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OU, Linjun, and Jian CAO. "A peak recognition algorithm designed for chromatographic peaks of transformer oil." Chinese Journal of Chromatography 32, no. 9 (2014): 1019. http://dx.doi.org/10.3724/sp.j.1123.2014.05008.

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Dissertations / Theses on the topic "PEAK2"

Hallett, Matthew Gabriel. "Peak performance training." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4771.

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Peak performance is defined as an "episode of superior functioning" where an individual performs up to (and sometimes exceeds) their full potential (Privette, 1983, p. 1361). Most individuals do not consistently experience episodes of peak performance. After accounting for biological factors, motivation, and external constraints, the inability to achieve peak performance consistently is due to the challenge of successfully selecting and accessing knowledge and skills on demand while under pressure (Brown, 2009). This thesis describes the psychology of peak performance and skill training for peak performance. A peak performance training program is designed specifically for business professionals. The program was delivered to business professionals and a focus group was conducted to gather data on how to improve the training program. Grounded theory was used as the method of inquiry during data analysis. Results indicated that participants reacted favorably to the training content, training design, variety of training activities, and the training's applicability, but had unfavorable reactions to the training duration, comprehension of concepts, training materials, utility, and training conclusions.
ID: 030646215; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (M.A.)--University of Central Florida, 2011.; Includes bibliographical references (p. 108-114).
M.A.
Masters
Teaching, Learning and Leadership
Education
Applied Learning/Instruction

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Scholefield, Graham Paul. "Trip chains in peak and off-peak travel by London residents." Thesis, University College London (University of London), 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361626.

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Le, Cam Pierre-Yves. "Peake, Gormenghast et le fantastique." Rennes 2, 1993. http://www.theses.fr/1993REN20022.

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En offrant un syncrétisme fantastique dans sa trilogie de Gormenghast, monde imaginaire domine par un rituel millenaire, le romancier contemporain anglais Mervyn Peake propose une définition originale du fantastique littéraire. Celui-ci est perçu, non plus comme un genre, mais comme un mode, ou le sensible du fantastique réaliste, pénétration dynamique et subjective de la réalité, permet d'harmoniser les autres lectures traditionnelles gothiques, fantastiques et merveilleuses. Le fantastique peakien embrasse toute expression irrationnelle donnant lieu à une représentation, qu'il s'agisse de métaphores ou de monstres. La valeur de cette mosaïque est d'abord esthétique. Comme en témoigne la dialectique picturale de l'oeuvre, Peake est un auteur de formes qui explore les "strates" de la création d'un point de vue thématique et stylistique. Mais il porte aussi, dans cette étude artistique, un regard sur ses semblables. Miroir dystopique de la société contemporaine, la trilogie de Gormenghast reflète la condition difficile de l'homme, qui ne doit son salut qu'a lui-même. Peake dépasse, cependant, la seule réalité des violences et des troubles, pour exhumer une vérité optimiste de l'homme et de la vie placée sous le signe d'un comique bienveillant
By offering a fantastic syncretism in his Gormenghast trilogy, which is set in an imaginary ritual bound world, the contemporary English writer Mervyn Peake proposes an original definition of the literary fantastic. The literary fantastic is no longer seen as a genre but as a mode, where the sensorial aspect of fantastic realism, which is perceived as dynamic and subjective penetration of reality, helps to harmonize the other traditional gothic, fantastic and fantasy readings. Peake's fantastic embraces any kind of irrational expression which can be visualized, whether it is a metaphor or a monster. The value of this mosaic is first of all artistic. As the pictorial dimension shows, Peake is a formalist who explores the strata of creation from a thematic as well as a stylistic point of view. But he also focuses on his fellow men. The trilogy of Gormenghast is a dystopic mirror of contemporary society and it reflects the difficult condition of man. Who can only find salvation in himself. Peake, however, goes beyond the mere reality of violence and trouble to present an optimistic truth about man and life which is placed under the sign of benevolent comedy

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Loncarski, Jelena <1983&gt. "Peak-to-Peak Output Current Ripple Analysis in Multiphase and Multilevel Inverters." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6247/.

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Analysis of the peak-to-peak output current ripple amplitude for multiphase and multilevel inverters is presented in this PhD thesis. The current ripple is calculated on the basis of the alternating voltage component, and peak-to-peak value is defined by the current slopes and application times of the voltage levels in a switching period. Detailed analytical expressions of peak-to-peak current ripple distribution over a fundamental period are given as function of the modulation index. For all the cases, reference is made to centered and symmetrical switching patterns, generated either by carrier-based or space vector PWM. Starting from the definition and the analysis of the output current ripple in three-phase two-level inverters, the theoretical developments have been extended to the case of multiphase inverters, with emphasis on the five- and seven-phase inverters. The instantaneous current ripple is introduced for a generic balanced multiphase loads consisting of series RL impedance and ac back emf (RLE). Simplified and effective expressions to account for the maximum of the output current ripple have been defined. The peak-to-peak current ripple diagrams are presented and discussed. The analysis of the output current ripple has been extended also to multilevel inverters, specifically three-phase three-level inverters. Also in this case, the current ripple analysis is carried out for a balanced three-phase system consisting of series RL impedance and ac back emf (RLE), representing both motor loads and grid-connected applications. The peak-to-peak current ripple diagrams are presented and discussed. In addition, simulation and experimental results are carried out to prove the validity of the analytical developments in all the cases. The cases with different phase numbers and with different number of levels are compared among them, and some useful conclusions have been pointed out. Furthermore, some application examples are given.

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Baldan, Giancarlo. "Low complexity quantized controllers for LTI systems : peak-to-peak performance guarantees." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103717.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 139-143).
In this thesis, we propose a novel feedback control scheme for unstable LTI systems performing noise attenuation via a finite-rate digital channel. In the first part of the thesis, we introduce the structure of the control system as well as the encoder and decoder used to transmit the required control signals along the digital channel. The performances of the proposed algorithm are then evaluated by providing explicit bounds on the peak-to-peak noise attenuation, in regards to the induced l[subscript infinity symbol] gain of the closed loop . This result is obtained by constructing a new class of storage functions that can be employed to verify the dissipativity of the closed loop system with respect to a suitable supply rate function. In the second part of the thesis, we examine the trade-off between the closed loop performances and the required rate of the channel. While the digital channel imposes some limitations on the achievable induced l[subscript infinity symbol] gain, we show how the performances of the proposed scheme can still approximate those achievable without communication constraints provided that the rate of the channel is large enough. A numerical optimization problem is then devised to design the parameters of the control scheme in order to minimize the strain on the channel while matching some prescribed constraints on the closed loop induced l[subscript infinity symbol] gain.
by Giancarlo Baldan.
Ph. D.

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Hoan, Andros. "Peak Shift in Remembering." The University of Waikato, 2003. http://hdl.handle.net/10289/2487.

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If remembering is discriminative behaviour along the dimension of time and if, as Sargisson and White (2001) argued, generalisation around a peak can occur in this behaviour, then the peak shift which has been shown in discrimination along so many other stimulus dimensions, might also occur in remembering. To examine this hypothesis, 6 hens were trained in a delayed matching-to-sample procedure at delays of 2 and 4 s. The probability of reinforcement for correct responses was initially 0.9 at both delays until performance stabilised. A generalisation probe was then carried out by inserting unreinforced trials at delays of 0, 1, 1.5, 2.5, 3, 3.5, 4.5, 5 and 6 s in a session amongst normal training delay trials. The generalisation functions had a slight peak around 2 s. After further training, a second generalisation probe showed a slightly declining function. The probability of reinforcement at the 2 s delay was then dropped to 0.1, so that in the terms of the classical generalisation/peak shift paradigm, 2-s delay trials became S¯ and 4-s delay trials became S+. A third generalisation probe then was conducted. This resulted in a flat function from 0 s to 3 s, and a large, clear peak in discriminative performance at 4.5 s over all hens. After more of the same differential reinforcement training, a fourth generalisation probe showed a broad curve peaking at 3 s, with minima at 1 s and 6 s and a global maximum at 0 s. Another training condition was then run, with the probability of reinforcement at the 2-s delay dropped to 0, to see if increasing the aversiveness of S¯ would again result in a peak shift. A fifth generalisation probe was then conducted. This showed a sharp decline in discriminability at shorter delays, a dip around 2 s, and a very small area shift beyond 4 s, but no clear peak shift. This was interpreted as being due to overlearning, with the consequences of remembering at S¯ no longer significantly affecting performance at S+. A final training condition was then run, with S¯ moved from 2 s to 3 s with zero probability of reinforcement, and for only a short period, to prevent overlearning. It was predicted that this would cause peak shift to re-occur. A sixth generalisation probe was then conducted. This found a further decline in discriminability at shorter delays, a shift in the dip from 2 s to 3 s, and a large, clear peak at 4.5 s. This demonstration of peak shift in a remembering process would not have been predicted by any traditional theory of memory, but strongly supports the conception of remembering as discriminative behaviour along the stimulus dimension of time.

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Gornik, Elizabeth. "Perspectives on peak performance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0006/MQ45050.pdf.

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Bastian, Anne. "Peak Car in Sweden?" Licentiate thesis, KTH, Transportplanering, ekonomi och teknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-163414.

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It has long been well-known that economic variables such as GDP and fuel price as well as socio-demographic characteristics and spatial distribution are key factors in explaining car use trends. However, due to the recently observed plateau of total car travel in many high income countries, it has been argued that other factors, such as changes in preferences, attitudes and life-styles, have become more important drivers of car use. This thesis shows that the two variables GDP per capita and fuel price explain most of the aggregate trends in car distances driven per adult in Sweden: as much as 80% over the years 2002 to 2012. The estimated elasticities are well in line with previous literature and can reasonably well reproduce the trend in car distances driven per adult back to 1980. We find, however, a substantial variation in elasticities between municipalities depending on public transport supply, population density, share of foreign-born inhabitants and the average income level. Swedish National Travel Survey data from 1978 to 2011 reveals that reductions in per adult driving mainly occurred among urban men. Urban men of all income groups reduced their driving for both commuting and non-commuting trips in conjunction with rising gasoline prices, which may have contributed to this development. We find that driving among those socio-demographic groups, who have better opportunities to reduce their driving, and driving for discretionary rather than commute purposes is being reduced over time. Sweden is ranked among the most gender-equal countries in the world; yet we find a substantial remaining gender gap in the share of adults driving a car on an average day, even when controlling for other socio-economic differences.

QC 20150409

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許哲碩 and Chik-shek Enesco Hui. "Peak Tram Station: extension." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31985749.

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Li, Po-ling, and 李寶玲. "Castle Peak Hospital redevelopment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31983509.

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Books on the topic "PEAK2"

Batty, Stephen R. The last years of the "Peaks". London: I. Allan, 1985.

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Roland, Smith. Peak. Orlando: Harcourt, Inc., 2007.

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Roland, Smith. Peak. Orlando, FL: Harcourt Children's Books, 2007.

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Conley, Chip. Peak. New York: John Wiley & Sons, Ltd., 2007.

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Jan, Kelsall, ed. Peak District: Dark Peak walks. Richmond: Crimson, 2009.

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Defiant peaks. Oxford: Solaris, 2012.

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Ganeri, Anita. Freaky peaks. London: Scholastic, 2009.

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Norten, Glen. Triple Peaks. Anstey: F. A. Thorpe, 2004.

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Frost, Mark. Twin peaks. London: Hollywood Scripts, 1989.

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Twin peaks. Woodinville, WA: Martingale & Company, 2008.

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Book chapters on the topic "PEAK2"

Schafer, Wes. "Peak Skimming for Overlapping Peaks." In Encyclopedia of Chromatography, 1203–4. CRC Press, 2005. http://dx.doi.org/10.1201/noe0824727857-255.

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Schafer, Wes. "Peak Skimming for Overlapping Peaks." In Encyclopedia of Chromatography, Second Edition, 1203–4. CRC Press, 2005. http://dx.doi.org/10.1201/noe0824727857.ch255.

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Schafer, Wes. "Peak Skimming for Overlapping Peaks." In Encyclopedia of Chromatography, Third Edition (Print Version). CRC Press, 2009. http://dx.doi.org/10.1201/noe1420084597.ch336.

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Rodríguez-Vidal, Francisco. "Application of Excitation-Emission Matrix Fluorescence (EEMF) in the Wastewater Field." In Fluorescence Imaging - Recent Advances and Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105975.

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Fluorescence is a versatile and useful analytical technique for the analysis of waters, both natural waters (freshwaters and marine waters) and wastewaters (urban wastewaters and industrial effluents). Among the various fluorescence techniques currently available, excitation-emission matrix fluorescence (EEMF) is the most used nowadays since it provides comprehensive information on the dissolved organic matter (DOM) present in water. EEMF spectra can be represented either in the form of a 3D-graph or a 2D-contour map and fluorescence peaks can be studied by the fast and simple peak-picking method (more suitable for routine measurements in water treatment plants, allowing a rapid response in case of potential problems in the sequence of treatment) or using mathematical tools such as PARAFAC (more suitable for research purposes and accurate identification of the fluorophores). The EEMF peaks commonly found in waters are peaks A and C (humic substances), peaks B1, B2, T1, and T2 (protein-like peaks), and peak M (microbial-like peak). EEMF was first applied to the characterization of natural waters, but in recent years, more attention is being paid to the wastewater field. Urban wastewaters have been mostly studied, whereas there are fewer studies focused on industrial effluents. This chapter provides a brief review of these EEFM applications.

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Kim, Myung-Hoon. "Advances in Derivative Voltammetry - A Search for Diagnostic Criteria of Several Electrochemical Reaction Mechanisms." In Analytical Chemistry - Advancement, Perspectives and Applications. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96409.

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New methods for analysis of current-potential curves in terms of their derivatives are presented for studying various types of electrode processes – such as simple electron transfer reactions (reversible, quasi-reversible, and irreversible electron transfer) as well as chemically coupled electron transfer reactions along with a diagnostic scheme for differentiating these various types of electrochemical reaction mechanisms. Expressions for first- and higher order derivatives are derived from theoretical analytical solutions for currents for the different types of electrode mechanisms. The derivative curves are analyzed in terms of various parameters which characterize peak shape or peak symmetry with an emphasis on the second derivatives with well-defined anodic and cathodic peaks. Second derivatives can yield, in a simpler manner, the symmetry ratios; i.e., a ratio of anodic to cathodic peak-currents (ipa/ipc), and a ratio of anodic to cathodic peak-widths (Wpa/wpc) and a ratio of anodic to cathodic peak potential differences (ΔEpa/ΔEpc) or a peak separation (Epa-Epc) are evaluated, and these ratio can be related to kinetic parameters associated with a particular types of electrode mechanisms. Peaks are found to be symmetrical for a simple reversible electron transfer process (Er). However, peaks become asymmetrical when the electron transfer become slower (namely, irreversible, Eirr) or e− transfer reaction is coupled with homogeneous chemical reactions such as a prior reaction (CEr) or a follower-up reaction (ECr). From measured values of such symmetry ratios above, one can gain insight to the nature of the electrochemical systems enabling us to determine various kinetic parameters associated with a system. A diagnostic criteria for assigning an electrode mechanism is devised based on the values of asymmetry parameters measured, which are unity for a simple reversible electron transfer process.

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Wu, Wen-Chia, Chung-Sung Yang, and Yan Xu. "Twist Tetrahedral-Tilting Structure Built from Photoluminescent Cadmium Chalcogenide Clusters." In Advanced Functional Materials. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.92066.

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The newly synthesized cadmium chalcogenide ternary cluster is composed by six [S3Se]2− tetrahedron units, coordinated with six Cd2+ cations. The potential cavity, calculated by the PLATON program, occupied 38.1% of crystal cell volume. The charge of unit cell is neutral. Therefore, the unit cell formula is determinate as [Cd6S18Se6]. Two strong solid-state luminescence peaks, centered at 450 nm and 498 nm, were observed from the ternary [Cd6S18Se6] clusters by λ = 370 nm radiation. The 450 nm peak is due to the porosity property of cadmium chalcogenide clusters. However, the 498 nm peak has not been reported for the cadmium chalcogenide clusters before. In this study, we demonstrate that the 498 nm peak is attributed to the embedded Se atoms confined in the [S3Se]2− unit of [Cd6S18Se6] cluster. The luminescent output from the ternary [Cd8S18Se6] cluster is stable in room temperature for more than 6 months.

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Beltrán-Triviño*, Alejandro, Uwe C. Martens, and Albrecht von Quadt. "Siliciclastic provenance of the Cenozoic stratigraphic succession in the southern Gulf of Mexico: Insights from U-Pb detrital zircon geochronology and heavy minerals analysis." In Southern and Central Mexico: Basement Framework, Tectonic Evolution, and Provenance of Mesozoic–Cenozoic Basins, 217–50. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.2546(09).

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ABSTRACT This work presents new geochronological and mineralogical data to investigate the provenance of sediments accumulated in deep-water environments in the southern and southwestern regions of the Gulf of Mexico during the Cenozoic. We integrated U-Pb geochronology with heavy and light minerals data to better understand the provenance of the Paleocene–Miocene strata and the evolution of the sediment source terranes. The analyzed samples came from drill cuttings of sandy levels in five exploration wells offshore in the Gulf of Mexico: Puskon-1, Aktum-1, Kunah-1, Kabilil-1, and Chuktah-201. The material contained abundant barite, a component of the drilling mud. Consequently, a semiquantitative approach to discriminate mineral phases and to quantify concentrations was used. Overall, we recognized 10 zircon populations that range from Proterozoic to Cenozoic ages. Proterozoic ages show a prominent peak at ca. 1.0 Ga and a minor peak at ca. 1.8 Ga. The Neoproterozoic to Cambrian population displays a broad distribution with a peak at ca. 600 Ma. Ordovician–Silurian zircons exhibit minor peaks at ca. 460 and 445 Ma. Devonian and Carboniferous zircons are very scarce in our data set. Permian–Triassic zircons are abundant, and they show a prominent peak at ca. 255 Ma and a minor one at ca. 228 Ma. Jurassic zircons are not common and display several minor peaks at ca. 185, 170, and 155 Ma. The Early Cretaceous population displays a noticeable peak at ca. 120 Ma. Late Cretaceous–Paleocene zircons exhibit several peaks at ca. 92, 82, 72, and 65 Ma. Cenozoic zircons also display several prominent peaks at ca. 40, 35, 25, and 18 Ma. Zircons of Proterozoic to Early Cretaceous ages are interpreted to be derived from the Mesozoic sedimentary cover of basement blocks in southern and eastern Mexico terranes due to their rounded to subrounded morphology. Late Cretaceous and Cenozoic zircons are the most abundant populations in the analyzed samples. These zircon populations exhibit euhedral and subhedral morphology indicating derivation from primary sources in the magmatic arcs. This has important implications in assessing the reservoir quality, since the sediments were directly delivered from the magmatic arc into the deep-water environments. Our results allow us to conclude that the sedimentary provenance of the southwestern and southern strata in the Gulf of Mexico was not associated with Laurentian terranes, as has been proposed for Late Cretaceous–Paleogene strata of northern Mexico and the northern Gulf of Mexico, such as the world-class Wilcox-type hydrocarbon reservoirs. We propose that the provenance of the analyzed strata was related to the tectono-magmatic evolution of the southern Mexico terranes during the Cenozoic; therefore, large NW-SE dispersal systems that eroded Laurentian terranes in the southern United States did not deliver sediments into the southern sectors of the Gulf of Mexico, probably constrained by the Tamaulipas Arch and the Gulf Stream.

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"Front Matter." In Peak Pursuits, i—vi. Yale University Press, 2020. http://dx.doi.org/10.2307/j.ctv138wr6d.1.

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"THE SELLING OF THE ALPS AND THE BEGINNING OF THE “GOLDEN AGE”:." In Peak Pursuits, 149–73. Yale University Press, 2020. http://dx.doi.org/10.2307/j.ctv138wr6d.10.

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"POETIC SCIENCE AND COMPETITIVE VIGOR:." In Peak Pursuits, 174–208. Yale University Press, 2020. http://dx.doi.org/10.2307/j.ctv138wr6d.11.

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Conference papers on the topic "PEAK2"

Colegrove, S. B. "A peak detector that picks more than peaks." In 2002 International Radar Conference (Radar 2002). IEE, 2002. http://dx.doi.org/10.1049/cp:20020270.

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Khalid, Seema, and Syed Ismail Shah. "Peak-To-Average Power Ratio Reduction by Zero Forcing Peaks." In 2006 IEEE International Multitopic Conference. IEEE, 2006. http://dx.doi.org/10.1109/inmic.2006.358130.

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"Title pages." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344551.

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"Contents." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344552.

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Mirakhorli, Mehdi, Janet Burge, Roshanak Roshandel, and Jane Cleland-Huang. "Foreword." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344553.

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Koziolek, Anne. "Architecture-driven quality requirements prioritization." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344554.

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Michael Sorensen Loft, Soren Snehoj Nielsen, Kim Norskov, and Jens Baek Jorgensen. "Interplay between requirements, software architecture, and hardware constraints in the development of a home control user interface." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344555.

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Petrov, Plamen, Ugo Buy, and Robert L. Nord. "Enhancing the software architecture analysis and design process with inferred macro-architectural requirements." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344556.

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Mou, Dongyue, and Daniel Ratiu. "Binding requirements and component architecture by using model-based test-driven development." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344557.

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Savio, Deepti, and Girish Suryanarayana. "How to avoid taking three lefts when you can go right: Making the architectural perspective count." In 2012 IEEE First International Workshop on the Twin Peaks of Requirements and Architecture (Twin Peaks). IEEE, 2012. http://dx.doi.org/10.1109/twinpeaks.2012.6344558.

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Reports on the topic "PEAK2"

Dorman, Eleanor, Zara Markovic-Obiago, Julie Phillips, Richard Szydlo, and Darren K. Patten. Wellbeing in UK Frontline Healthcare Workers During Peaks One and Three of the COVID-19 Pandemic: A Retrospective Cross-Sectional Analysis. Science Repository, December 2022. http://dx.doi.org/10.31487/j.ejgm.2022.01.01.

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Background: COVID-19 had a huge impact on the wellbeing of healthcare workers (HCWs). This is well documented during the first peak of the pandemic. With cases in the UK rising for a third peak, hospitalisations and deaths surpassing the first, there is very little known about the mental health of HCWs during this time. Methods: Using a questionnaire, data was collected from patient-facing staff at Barking, Havering, and Redbridge University Trust to quantify and compare the period prevalence of symptoms of depression, anxiety, and PTSD during the first peak (P1: March-May 2020) and third peak (P3: December 2020-Feburary 2021) of the COVID-19 pandemic as well as wellbeing service use, demographics of responders and what they found most difficult during the peaks. Results: Of 158 responders, only 22·4% felt they had enough access to wellbeing services during P1 and 21·5% in P3. Of those who used wellbeing services 34·4% found them useful in P1 and 34·6% in P3. 70·3% of responders felt that not enough was done for staff wellbeing. The median anxiety score decreased from P1 (10(range 5-17)) to P3 (8(range 4-16)) p=0·031. Under 30-year-olds’ depression and PTSD scores increased from P1 to P3 (depression: P1 7(1-11), P3 8(3-14), p=0·048, PTSD: P1 4(0-7) peak 3 5(2-9), p=0·037). Several groups showed a decrease in anxiety scores from P1 to P3 including; over 30-year-olds (P1 10(5-17), P3 7(3-15) p=0·002), BME responders (P1 8(3·75-15) P3 6·5(1-12) p=0·006), AHP (P1 14(7-19), P3 11(5-19) p=0·005), ITU workers (P1 15(8-18·25) P3 12(5·75-18·25) p=0·004), and those who were redeployed (P1 8(5-18·25), P3 5(2-14·75), p=0·032). Conclusion: We have observed changes in mental health symptoms within the study population as the peaks of the pandemic continue. With the majority of responders reporting they felt not enough had been done for their wellbeing support - and of those who used the wellbeing services only around 1/3 felt they were useful - we hope that this paper can help inform wellbeing provision and identify groups at higher risk of developing mental health symptoms.

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Dahleh, Munther A. Robust Controller Design: Minimizing Peak-to-Peak Gain. Fort Belvoir, VA: Defense Technical Information Center, September 1992. http://dx.doi.org/10.21236/ada460049.

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Rogoff, Kenneth, and Yuanchen Yang. Peak China Housing. Cambridge, MA: National Bureau of Economic Research, August 2020. http://dx.doi.org/10.3386/w27697.

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Blanchflower, David, and Alex Bryson. Union Membership Peaks in Midlife. Cambridge, MA: National Bureau of Economic Research, August 2020. http://dx.doi.org/10.3386/w27692.

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Cook, D. G., D. W. Morrow, and J. D. Aitken. Geology, Twin Peaks, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2007. http://dx.doi.org/10.4095/223625.

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Soummane, Salaheddine, Amro Elshurafa, Hatem Al Atawi, and Frank Felder. Cross-seasonal Fuel Savings from Load Shifting in the Saudi Industrial Sector. King Abdullah Petroleum Studies and Research Center, April 2022. http://dx.doi.org/10.30573/ks--2022-dp01.

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Load shifting, that is, moving demand from peak to off-peak hours, is an important type of demand response. It can reduce the overall operating costs of a power system and improve the reliability of the power grid. This study estimates the financial implications of load shifting in the Saudi industrial sector. We use a national Saudi power system dispatch optimization model to simulate three scenarios. With this model, we quantify the impacts of shifting industrial loads from the peak summer to the off-peak winter months, keeping industrial electricity tariffs unchanged.

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Englin, J. E., J. G. De Steese, R. W. Schultz, and M. A. Kellogg. Peak load management: Potential options. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/5314251.

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Tan, C. Y. Peak finding using biorthogonal wavelets. Office of Scientific and Technical Information (OSTI), February 2000. http://dx.doi.org/10.2172/750842.

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McMechan, M. E., and G. B. Leech. Geology, Tangle Peak, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2011. http://dx.doi.org/10.4095/287454.

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Omana, Michael Alexis, Dora K. Wiemann, Taylor Settecerri, and Ann Renee Dallman. Filtration Performance Results: Sierra Peaks Material #4. Office of Scientific and Technical Information (OSTI), April 2020. http://dx.doi.org/10.2172/1617115.

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