John A. Hall

ORCID: 0000-0001-8845-4311
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About
Contact & Profiles
Research Areas
  • Calibration and Measurement Techniques
  • Superconducting and THz Device Technology
  • Physics of Superconductivity and Magnetism
  • Nuclear Physics and Applications
  • Spacecraft and Cryogenic Technologies
  • Drilling and Well Engineering
  • Animal Behavior and Reproduction
  • Fire effects on ecosystems
  • Advanced Semiconductor Detectors and Materials
  • Botany and Geology in Latin America and Caribbean
  • Radiation Detection and Scintillator Technologies
  • Amphibian and Reptile Biology
  • Fern and Epiphyte Biology
  • Thermal properties of materials
  • Scientific Measurement and Uncertainty Evaluation
  • Botany, Ecology, and Taxonomy Studies
  • Offshore Engineering and Technologies
  • Turtle Biology and Conservation
  • Risk and Safety Analysis
  • Plant and animal studies
  • Avian ecology and behavior
  • thermodynamics and calorimetric analyses
  • Petroleum Processing and Analysis
  • Advanced Sensor Technologies Research
  • Marine and Offshore Engineering Studies

Google (United States)
2024

Boise State University
2021-2023

Iowa State University
2023

Ames National Laboratory
2023

Star Cryoelectronics (United States)
2009-2022

American Thoracic Society
2021

Strategic Environmental Research and Development Program
2011-2019

United States Department of Defense
2012-2019

The University of Queensland
2004-2018

Office of Scientific and Technical Information
1996-2011

Abstract In this paper, we review the need for, use of, and demands on climate modeling to support so‐called ‘robust’ decision frameworks, in context of improving contribution information effective making. Such frameworks seek identify policy vulnerabilities under deep uncertainty about future propose strategies for minimizing regret event broken assumptions. We argue that currently there is a severe underutilization models as tools supporting making, slowing progress developing informed...

10.1002/wcc.202 article EN Wiley Interdisciplinary Reviews Climate Change 2012-12-18

10.1038/s41586-024-08449-y article EN cc-by-nc-nd Nature 2024-12-09

To maximize the utility of research to decisionmaking, especially given limited financial resources, scientists must set priorities for their efforts. We present a list top 40 high-priority, multidisciplinary questions directed toward informing some most important current and future decisions about management species, communities, ecological processes in United States. The were generated by an open, inclusive process that included personal interviews with decisionmakers, broad solicitation...

10.1525/bio.2011.61.4.9 article EN BioScience 2011-04-01

Section:ChooseTop of pageAbstract <<Table ContentsOverviewWildland Fire Incidence a...Wildland Health Effe...Communicating Risk...Actions to Address the He...ConclusionsReferencesCITING ARTICLES

10.1513/annalsats.202102-148st article EN Annals of the American Thoracic Society 2021-05-03

Sterile neutrinos are natural extensions to the standard model of particle physics and provide a possible portal dark sector. We report new search for existence sub-MeV sterile using decay-momentum reconstruction technique in decay $^{7}\mathrm{Be}$. The experiment measures total energy $^{7}\mathrm{Li}$ daughter atom from electron capture $^{7}\mathrm{Be}$ implanted into sensitive superconducting tunnel junction (STJ) quantum sensors. This first presents data single STJ operated at low...

10.1103/physrevlett.126.021803 article EN Physical Review Letters 2021-01-13

Metal intercalation of graphene is a promising method to tune its electronic band structure and generate novel topological phases. The tuning depends critically on the ability bond intercalated atoms at predesigned, subsurface interlayer locations because emerging metal location. We have studied Dy under single-layer (SLG) SiC using spot profile analysis--low-energy electron diffraction scanning tunneling microscopy (STM). experimental work complemented with density-functional theory (DFT)...

10.1103/physrevb.107.045408 article EN publisher-specific-oa Physical review. B./Physical review. B 2023-01-09

A species is conservation reliant when the threats that it faces cannot be eliminated, but only managed. There are two forms of reliance: population- and threat-management reliance. We provide an overview concept introduce a series articles examine in context range taxa, threats, habitats. If sufficient assurances can provided successful population threat management will continue, conservation-reliant may either delisted or kept off endangered list. This advantageous because unlisted more...

10.1525/bio.2012.62.10.6 article EN BioScience 2012-10-01

Sea-level rise (SLR) is not just a future trend; it occurring now in most coastal regions across the globe. It thus impacts only long-range planning environments, but also emergency preparedness. Its inevitability and irreversibility on long time scales, addition to its spatial non-uniformity, uncertain magnitude timing, capacity drive non-stationarity flooding engineering timescales, create unique challenges for risk-management decision processes. This review assesses past United States...

10.1080/08920753.2019.1551012 article EN Coastal Management 2019-01-24

Plants that invest in large, heavy seeds and colorful, fleshy fruits or analogous structures seem adapted for dispersal by large vertebrates. Some such plants, like Australian cycads the genus Macrozamia, do not disperse well, which could be explained seed-dispersal relationships with megafauna are rare extinct contemporary ecosystems. Such plants provide an opportunity to investigate ecological consequences of low distances. •We investigated seed Macrozamia miquelii Central Queensland...

10.3732/ajb.1200115 article EN American Journal of Botany 2013-05-28

Nanoarchitectural control of matter is crucial for next-generation technologies. DNA origami templates are harnessed to accurately position single molecules; however, direct molecule evidence lacking regarding how well can the orientation such molecules in three-dimensional space, as factors affecting control. Here, we present two strategies controlling polar (

10.3390/ijms23147690 article EN International Journal of Molecular Sciences 2022-07-12

C. W. Gibby and J. Hall, Chem. Soc., 1931, 691 DOI: 10.1039/JR9310000691

10.1039/jr9310000691 article EN Journal of the Chemical Society (Resumed) 1931-01-01

Molecular excitons play a foundational role in chromophore aggregates found light-harvesting systems and offer potential applications engineered excitonic systems. Controlled aggregation of chromophores to promote exciton delocalization has been achieved by covalently tethering deoxyribonucleic acid (DNA) scaffolds. Although many studies have documented changes the optical properties upon using DNA scaffolds, more limited work investigated how structural modifications via bridged nucleotides...

10.1021/acs.jpcb.1c07602 article EN cc-by-nc-nd The Journal of Physical Chemistry B 2021-12-13

The first page of this article is displayed as the abstract.

10.1039/ct8875100751 article EN Journal of the Chemical Society Transactions 1887-01-01

Postembryonic skeletal ontogeny of the pelobatid frog Scaphiopus intermontanus is described based on a developmental series cleared-and-stained, whole-mount specimens. The focus laboratory-reared individuals fed herbivorous diet as larvae. Although there variation in timing ossification individual elements relative to stages external morphological criteria, sequence development generally conservative. Compared with its close relative, S. bombifrons, ossifications that occur during...

10.1002/(sici)1097-4687(199811)238:2<179::aid-jmor4>3.0.co;2-6 article EN Journal of Morphology 1998-11-01

Experiments carried out to investigate the reproductive ecology of Australian cycad Lepidozamia peroffskyana (Regal, Bull. Soc. Imp. Nat. Mosc. 1857, 1: 184) revealed that this species is pollinated exclusively by host-specific Tranes weevils (Pascoe 1875). The carry their life cycle within tissues male cones but also visit female in large numbers. Female from which insects (but not wind) was excluded had a pollination rate essentially zero. In contrast, wind insects) were comparable with...

10.1071/bt03159 article EN Australian Journal of Botany 2004-01-01

Studies of cycad pollination globally have revealed obligate mutualisms with insects, typically host-specific beetles. Some cycads in the genus Cycas floating seeds allowing oceanic dispersal, and colonized remote islands such as Fiji, Guam, Madagascar. This seems to contradict expected requirement that specific beetle pollinators be present order for establish localities. We therefore postulated these 'island' are wind pollinated. tested adaptations associated a laboratory study pollen...

10.1111/j.1095-8312.2011.01695.x article EN Biological Journal of the Linnean Society 2011-08-19

Quantum error correction provides a path to reach practical quantum computing by combining multiple physical qubits into logical qubit, where the rate is suppressed exponentially as more are added. However, this exponential suppression only occurs if below critical threshold. In work, we present two surface code memories operating threshold: distance-7 and distance-5 integrated with real-time decoder. The of our larger memory factor $\Lambda$ = 2.14 $\pm$ 0.02 when increasing distance two,...

10.48550/arxiv.2408.13687 preprint EN arXiv (Cornell University) 2024-08-24

The Ninth General Conference of Weights and Measures held in Paris October 1948, adopted "The International Temperature Scale 1948," being a revision 1927." This article gives the essential details new scale discusses changes which have been made reasons underlying them. most important differences are: (1) use value 960.8° instead 960.5° C for freezing point silver; (2) adoption Planck equation that Wien extrapolation to high temperatures; (3) 1.438 1.432 constant C2 equation; (4) name...

10.1088/0508-3443/1/4/301 article EN British Journal of Applied Physics 1950-04-01

Aggregates of conjugated organic molecules (i.e., dyes) may exhibit relatively large one- and two-exciton interaction energies, which has motivated theoretical studies on their potential use in quantum information science (QIS). In practice, one way realizing energies is by maximizing the transition dipole moment (μ) difference static (Δd) constituent dyes. this work, we characterized electronic structure excited-state dynamics monomers aggregates four asymmetric polymethine dyes templated...

10.1021/acs.jpca.3c00562 article EN cc-by-nc-nd The Journal of Physical Chemistry A 2023-06-01

A new construction of a bridge for resistance thermometry according to the design F. E. Smith is described, and details layout, methods temperature control are given. The incorporates type coil high stability has been shown be capable measuring resistances with reproducibility few parts in 107 without need frequent re-calibration.

10.1088/0950-7671/32/6/304 article EN Journal of Scientific Instruments 1955-06-01
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