المؤلفون: Langevin, J, Harris, CB, Satre-Meloy, A, Chandra-Putra, H, Speake, A, Present, E, Adhikari, R, Wilson, EJH, Satchwell, AJ

المصدر: Joule. 5(8)

الوصف: Buildings use 75% of US electricity; therefore, improving the efficiency and flexibility of building operations could provide significant value to the rapidly changing electricity system. Here, we estimate the technical potential near- and long-term impacts of best-available building efficiency and flexibility measures on annual electricity use and hourly demand across the contiguous United States. Co-deployment of building efficiency and flexibility avoids up to 742 TWh of annual electricity use and 181 GW of daily net peak load in 2030, rising to 800 TWh and 208 GW by 2050; at least 59 GW and 69 GW of the peak reductions are dispatchable. Implementing efficiency measures alongside flexibility measures reduces the potential for off-peak load increases, underscoring limitations on load shifting in efficient buildings. Overall, however, we find a substantial building-grid resource that could reduce future fossil-fired generation needs while also reducing dependence on energy storage with increasing variable renewable energy penetration.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/6jc0w2ntTest

المؤلفون: Langevin, J, Harris, CB, Reyna, JL

المصدر: Joule. 3(10)

الوصف: Buildings are responsible for 36% of CO2 emissions in the United States and will thus be integral to climate change mitigation; yet, no studies have comprehensively assessed the potential long-term CO2 emissions reductions from the U.S. buildings sector against national goals in a way that can be regularly updated in the future. We use Scout, a reproducible and granular model of U.S. building energy use, to investigate the potential for the U.S. buildings sector to reduce CO2 emissions 80% by 2050, consistent with the U.S. Mid-Century Strategy. We find that a combination of aggressive efficiency measures, electrification, and high renewable energy penetration can reduce CO2 emissions by 72%–78% relative to 2005 levels, just short of the target. Results are sufficiently disaggregated by technology and end use to inform targeted building energy policy approaches and establish a foundation for continual reassessment of technology development pathways that drive significant long-term emissions reductions.

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الوصول الحر: https://escholarship.org/uc/item/91w8d9c0Test

المؤلفون: Cole, WTS, Wei, H, Nguyen, SC, Harris, CB, Miller, DJ, Saykally, RJ

المصدر: Journal of Physical Chemistry C. 123(23)

مصطلحات موضوعية: Physical Chemistry, Engineering, Chemical Sciences, Technology

الوصف: Angle-resolved second harmonic scattering is used to probe the adsorption dynamics of aqueous cationic and anionic dye molecules onto polystyrene surfaces. The adsorptions of malachite green to negatively charged polystyrene and naphthol yellow S to positively charged polystyrene are both highly favorable, with Î"GAds values of -10.9 ± 0.2 and -10.27 ± 0.09 kcal/mol, respectively. A competitive displacement methodology was employed to obtain values for the adsorption free energies of various smaller neutral organic molecules, including the important micropollutant ascorbic acid, caffeine, and pentoxifylline. For charged adsorbers, electrostatic interactions appear to significantly contribute to adsorption behavior. However, electrostatic repulsion does not necessarily deter the adsorption of molecules with large uncharged moieties (e.g., surfactants). In these cases, the mechanism of adsorption is dominated by van der Waals interactions, with the surface charge playing a relatively minor role.

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الوصول الحر: https://escholarship.org/uc/item/6h77d1c2Test

المؤلفون: Serret, P, Lozano, J, Harris, CB, Lange, PK, Tarran, GA, Tilstone, GH, Woodward, EMS, Zubkov, MV

الوصف: The balance between plankton photosynthesis (GPP) and community respiration (CR) in the euphotic zone (net community production, NCP) is an essential driver of the biological carbon pump. Deficient datasets and a lack of knowledge of the mechanisms regulating CR cause poor empirical models and oversimplified parameterisations that maintain NCP as one of the most important unknowns for projections of the carbon pump. One important unresolved issue is the unexpected lack of empirical relationships between CR and the biomass or size-structure of the phytoplankton, which undermines the use of remotely sensed observations to predict net community metabolism. Here we analyse the spatial variation of plankton metabolism, chlorophyll a concentration (Chla), pico- and nanophytoplankton abundance and size-fractionated primary production (14CPP) along a latitudinal (49°N–46°S) transect of 73 stations across the Atlantic Ocean (AMT-22 cruise). The use of depth-weighted rates (rates integrated to the depth of 0.1% PAR, divided by the regionally varying depth of integration) markedly improved the depiction of latitudinal patterns and the significance of relationships, over volumetric or integrated rates. Depth-weighted CR showed clear and consistent latitudinal patterns with relevance for the distribution of NCP. Depth-weighted Chla and CR exhibited a significant relationship (CRZ=1.42ChlaZ-0.21, r2 = 0.69, N=37, p<0.001) with potential for the difficult prediction of CR. A general ratio of 1.42 mmolO2 mgChla-1 d-1 and a threshold Chla for net heterotrophy of ca. 0.25 mgChla m-3 can be tentatively proposed for the Atlantic, although further analyses of spatial and seasonal variation are necessary. We observed unusually positive NCP rates in the central part of the N gyre, due to a marked decrease of CR in a patch of high Synechococcus spp. abundance and high 14CPP by large phytoplankton. However, no relationship was observed between size-fractionated 14CPP and CR or the GPP : CR ratio during the cruise, contradicting the ...

وصف الملف: text

العلاقة: https://plymsea.ac.uk/id/eprint/10069/1/Serrett%20et%20al%202023_Published.pdfTest; Serret, P, Lozano, J, Harris, CB, Lange, PK, Tarran, GA, Tilstone, GH, Woodward, EMS and Zubkov, MV 2023 Respiration, phytoplankton size and the metabolic balance in the Atlantic gyres. Frontiers in Marine Science, 10. https://doi.org/10.3389/fmars.2023.1222895Test

الإتاحة: https://doi.org/10.3389/fmars.2023.1222895Test
https://plymsea.ac.uk/id/eprint/10069Test/
https://plymsea.ac.uk/id/eprint/10069/1/Serrett%20et%20al%202023_Published.pdfTest

المؤلفون: Numbers, KT, Barnier, AJ, Harris, CB, Meade, ML

المصدر: urn:ISSN:0965-8211 ; urn:ISSN:1464-0686 ; Memory, 27, 3, 368-378

مصطلحات موضوعية: Clinical Research, Aging, 1 Underpinning research, 1.2 Psychological and socioeconomic processes, Adult, Age Factors, Female, Humans, Male, Memory, Mental Recall, Repression, Psychology, Social Behavior, Stereotyping, Young Adult, age stereotypes, false memory, social memory, anzsrc-for: 1109 Neurosciences, anzsrc-for: 1701 Psychology, anzsrc-for: 1702 Cognitive Sciences

الوصف: These experiments are the first to investigate the impact of confederate accuracy, age, and age stereotypes in the social contagion of memory paradigm. Across two experiments, younger participants recalled household scenes with an actual (Experiment 1) or virtual (Experiment 2), older or younger confederate who suggested different proportions (0%, 33% or 100%) of false items during collaboration. In Experiment 2, positive and negative age stereotypes were primed by providing bogus background information about our older confederate before collaboration. Across both experiments, if confederates suggested false items participants readily incorporated these into their own memory reports. In Experiment 1, when no age stereotype was primed, participants adopted similar proportions of false items from younger and older confederates. Importantly, in Experiment 2, when our older confederate was presented in terms of negative ageing stereotypes, participants reported less false items and were better able to correctly identify the source of those false items.

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العلاقة: http://hdl.handle.net/1959.4/unsworks_80296Test; https://unsworks.unsw.edu.au/bitstreams/4837851f-1380-4ddd-a788-4bd408b4e37f/downloadTest; https://doi.org/10.1080/09658211.2018.1511809Test

الإتاحة: https://doi.org/10.1080/09658211.2018.1511809Test
http://hdl.handle.net/1959.4/unsworks_80296Test
https://unsworks.unsw.edu.au/bitstreams/4837851f-1380-4ddd-a788-4bd408b4e37f/downloadTest

المؤلفون: Waldeck, DH, Alivisatos, AP, Harris, CB

المصدر: Surface Science. 158(1-3)

مصطلحات موضوعية: Physical Sciences, Chemical Sciences, Physical Chemistry, Condensed Matter Physics, Quantum Physics, Physical Chemistry (incl. Structural), Chemical Physics, Physical chemistry, Condensed matter physics, Quantum physics

الوصف: In this review we discuss the interaction of a molecular excited state with a smooth substrate. Both theoretical and experimental work is treated. This discussion will concentrate on the classical treatment of the interaction because of its astounding success in comparison with experiment. We do however discuss the shortcomings of the classical treatment and some recent approaches to correcting these limitations. The experimental work is considered in detail but we focus on the region close to the substrate, less than 500 Å away because the longer distance regime has been well reviewed. At the end of this article we briefly point out areas where future work is needed. © 1985.

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الوصول الحر: https://escholarship.org/uc/item/51t5k698Test

المؤلفون: Whitmore, PM, Alivisatos, AP, Harris, CB

المصدر: Physical Review Letters. 50(14)

مصطلحات موضوعية: Physical Sciences, Affordable and Clean Energy, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences

الوصف: Energy transfer from n3* pyrazine to GaAs(110) has been studied. Within experimental error, a classical dielectric model quantitatively reproduces measurements of the distance-dependent lifetime for emitter-surface separations from 430 to 20. Analysis of the energy transfer shows that the molecular electronic excitation is dissipated through the creation of electron-hole pairs in the solid by the high-wave-vector components of the dipole near field. © 1983 The American Physical Society.

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الوصول الحر: https://escholarship.org/uc/item/8z81q2p7Test

المؤلفون: Alivisatos, AP, Waldeck, DH, Harris, CB

المصدر: The Journal of Chemical Physics. 82(1)

مصطلحات موضوعية: Physical Sciences, Chemical Sciences, Physical Chemistry, Engineering, Chemical Physics, Chemical sciences, Physical sciences

الوصف: The distance dependent lifetime of biacetyl separated from a Ag(111) crystal by NH3 spacer layers ranging in thickness from 28 to 457 Å has been measured. We extended previous work, where the molecular emission was resonant with the silver interband/plasmon transition, to the case where the emission is below the interband transition. The modulation of the radiative rate is described inadequately by the classical theory for our experimental geometry. At short distances where nonradiative energy transfer to the metal is important, the classical prediction deviates from the data as well. These observations are consistent with a model in which energy is transferred to electrons localized at the metal surface but might also be explained by an inability of the classical theory to model the radiative rate properly. © 1985 American Institute of Physics.

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الوصول الحر: https://escholarship.org/uc/item/0wp6w982Test

المؤلفون: Alivisatos, AP, Arndt, MF, Efrima, S, Waldeck, DH, Harris, CB

المصدر: The Journal of Chemical Physics. 86(11)

مصطلحات موضوعية: Physical Sciences, Chemical Sciences, Physical Chemistry, Engineering, Chemical Physics, Chemical sciences, Physical sciences

الوصف: The fluorescence decays from submonolayers of pyrene separated from Si(111) by Xe spacer layers are measured as a function of spacer thickness (17-200 Å), pyrene coverage, and emission wavelength. The results are explained in terms of two decay channels: energy transfer and trapping among the molecules in the two-dimensional pyrene overlayer, and excitation of electrons from the valence to the conduction band in the Si(111) by the dipole near field of the electronically excited pyrene molecule. The intralayer energy transfer is modeled using the Kohlrausch equation N(t)=N0 exp(-t/tau;) α, in which α is related to the distribution of pyrene molecules in energy. Energy transfer from the molecule to the semiconductor is modeled using the classical image dipole theory. The classical model is used to calculate the energy transfer rates from a dipole to Si and GaAs as a function of dipole-semiconductor separation, and as a function of dipole emission wavelength. © 1987 American Institute of Physics.

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الوصول الحر: https://escholarship.org/uc/item/6gd901s3Test

المؤلفون: Harris, CB.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/70q6v051Test