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Showing 1 to 20 of 31 for “"HPD"”.

  1. Selenium-induced Enhancement of Hematoporphyrin Derivative Phototoxicity in Murine Bladder Tumor Cells

    Tosk, Jeffrey M.

    … phototoxicity of hematoporphyrin derivative (Hpd) to murine bladder tumor (MBT-2) cells was studied in vitro. It was observed that selenium in the form of sodium selenite enhanced Hpd-sensitized photodamage in MBT-2 cells under conditions where the selenite alone was non-toxic. Sodium selenite …

    loma-linda Repository record

  2. Adjusting retrospective noise exposure assessment for use of hearing protection devices

    Sbihi, HindUniversity of British Columbia2008

    … account for use of hearing protection devices (HPD) which would result in potential misclassification. Exposure misclassification has been shown to attenuate exposure-outcomes relations. In the case of already subtle relationships such as noise and cardiovascular diseases, this would potentially …

    ubc Repository record

  3. Comparison of laboratory protocols for yielding improved estimates of hearing protection in field performance for use in standards development

    Richards, Michael LlewellynVirginia Tech1991

    Federal law requires hearing protection device (HPD) manufacturers to provide attenuation ratings for use in estimating workers’ protection levels. These ratings, which are laboratory obtained, typically overestimate the actual protection levels achieved in the workplace. This research investigated …

    vt Repository record

  4. Field evaluation of noise attenuation and comfort performance of earplug, earmuff, and ear canal cap hearing protectors under the ANSI S12.6- 1984 sound field standard

    Park, Min-YongVirginia Tech1991

    … different industrial hearing protection devices (HPDs) while on the job. Over 2 consecutive 3-week periods of HPD use, the study investigated the effects of 2 different HPD fitting procedures (subject-fit versus trained-fit) on the spectral field attenuation and user-rated comfort achieved with a …

    vt Repository record

  5. Laboratory investigation of in-field influences on spectral noise attenuation and comfort of insert and circumaural hearing protectors

    Park, Min-YongVirginia Tech1989

    … performance of the hearing protection devices (HPDs), posing the threat of underprotection for industrial workers. This research investigated the effects of HPD wearing time, subject activity movement, and HPD fitting procedure on the frequency-specific attenuation and user-rated comfort …

    vt Repository record

  6. An inter-laboratory investigation of ANSI standard fitting protocols, sample size, subject and experimenter gender, and trial on the real-ear attenuation of two types of earplugs

    Mears, Mark G.Virginia Tech1996

    … using two different hearing protection device (HPD) fitting procedures for testing the real-ear attenuation at threshold (REAT) of a popular vinyl foam earplug and a multi-sized premolded PVC single-flanged earplug. The first fitting procedure tested in the experiment is included in the revision …

    vt Repository record

  7. Influence of insertion/donning instruction on frequency-specific sound attenuation achieved with ear canal caps and earmuffs with implications for industrial noise application

    Lam, Siu TongVirginia Polytechnic Institute and State University1985

    … instruction. The hearing protection devices (HPDs) studied were: two earcaps (Willson #20 Sound-Ban, Flents #055 Peace & Quiet Headband), and four earmuffs (E-A-R model 1000, Siebe Norton Industrial model 4540, Peltor H6A/v, and Willson 365A Sound Barrier). HPD comfort and wearer preferences …

    vt Repository record

  8. Towards a Comprehensive Human Pathway Database For Systems Biology Applications

    Kasamsetty, Harini2010

    … integrated database, the Human Pathway database (HPD), is a data warehouse of a comprehensive collection of biological reactions, regulators, and metabolites, serving as a potential platform for future pathway analysis studies. We developed the database to manage integrated biomolecular …

    iupui Repository record

  9. Dietary Protein Regulation of Insulin Sensitivity and Glucose Homeostasis

    Baum, Jamie IleneUniversity of Illinois at Urbana-Champaign2015

    Taken together, these data suggest that HPD, high in leucine, modifies glycemic control by reducing the regulatory role of insulin and peripheral disposal of dietary CHO and upregulating hepatic gluconeogenesis under fasted conditions.

    uiuc Repository record

  10. The Detection of Warning Signals While Wearing Active Noise Reduction and Passive Hearing Protection Devices

    Christian, ErikaVirginia Tech1999

    … noise reduction (ANR) hearing protection device (HPD), a passive HPD, or no HPD. An ANR earmuff, a passive earmuff, and a user-molded foam earplug were tested in two types of noises (pink and red) at two different noise levels (85 dBA and 100 dBA). The signal used was an industry-standard backup …

    vt Repository record

  11. Chemical Tools to Monitor and Inhibit poly(ADP -Ribosyl)ation

    Boye, AmandaUniversity of Illinois at Urbana-Champaign2015

    … (intercalators), cell permeability issues (ADP-HPD), and nonspecific activity (tannins), few if any of these compounds have been useful for evaluating the effects of PARG inhibition in cell culture and in vivo. Thus, efforts to synthesize and assess cell ADP-HPD based PARG inhibitors will be …

    uiuc Repository record

  12. Multi-locus phylogenetic inference of the howler monkey (Alouatta) radiation in South America.

    Ferreira, Esmeralda2019

    … ca. 6.1 Mya (95% Highest Posterior Density, or HPD = 5.2 - 6.9 Mya). The Meso-American clade containing <em>Alouatta pigra</em> and <em>A. palliata</em> was dated back to ca. 1.3 Mya (HPD 0.9 – 1.9 Mya), while the South American taxa coalesce at a node dated to ca. 5.1 Mya (HPD 4.3 – 6.0 Mya). …

    cuny Repository record

  13. Characterization of Plasmodium falciparum PFF1010c and screening of pyrimidine-quinoline hybrids as inhibitors of HsP70-HsP40 functional partnerships of the Malaria parasite

    Mudau, Pertunia Thendo2021

    … PFF1010c possess SVN residues in place of the HPD motif located in the so-called J domain of this Hsp40 co-chaperone. For this reason, PFF1010c is an atypical Hsp40 which may lack the capability to interact with PfHsp70-1. To characterise the role of PFF1010c, and consequently, its SVN motif, …

    venda Repository record

  14. The effects of hearing protection on speech discrimination in differing noise spectra

    Horylev, Matthew JamesVirginia Tech1987

    … workers utilize hearing protection devices (HPDs). A controlled empirical study was conducted to determine the effects of several independent variables on speech reception and discrimination including: l). subject's hearing configuration (unoccluded or earplug, earcap, earmuff-occluded), 2). …

    vt Repository record

  15. Polynomial Preconditioning for Conjugate Gradient Methods

    Ashby, Steven FlynnUniversity of Illinois at Urbana-Champaign2014

    … required. When A is hermitian positive definite (hpd), the conjugate gradient method of Hestenes and Stiefel is popular. When A is hermitian indefinite (hid), the conjugate residual method may be used. If A is ill-conditioned, these methods may converge slowly, in which case a preconditioner is …

    uiuc Repository record

  16. Une classe d'intervalles bayésiens pour des espaces de paramètres restreints

    Ghashim, EhssanUniversité de Sherbrooke2013

    … par 1-α/1+α. Cette classe inclut la procédure HPD donnée par Marchand et Strawderman (2006) dans le cas où la densité sous-jacente d'un pivot est symétrique. Plusieurs exemples y illustrent la théorie étudiée. Finalement, on présentera de nouveaux résultats pour la probabilité de recouvrement …

    sherbrooke Repository record

  17. Effects of anechoic vs. reverberant sound-field, subject gender, and outlier dismissal on the real-ear attenuation of hearing protection devices

    Robinson, Gary S.Virginia Tech1991

    … attenuation of hearing protection devices (HPDs) when using a standard real-ear attenuation at threshold (REAT) protocol. In the experiment, three earmuffs and three earplugs were tested in two diffuse sound fields implemented in two different sound environments with different loudspeaker …

    vt Repository record

  18. Spectral attenuation and wearability of circumaural hearing protectors as influenced by design attributes and work-related activity

    Grenell, James F.Virginia Tech1988

    Hearing protection devices (HPDs), a widely used countermeasure against noise-induced hearing loss, are laboratory-tested for their attenuation (noise reduction) capabilities. Unfortunately, laboratory tests overestimate the in-workplace performance of the devices, potentially leading to inadequate …

    vt Repository record

  19. EPIDEMIOLOGIA GENOMICA DELLE PRINCIPALI VARIANTI DI SARS-COV-2 CIRCOLANTI IN ITALIA PRIMA E DURANTE L'ERA OMICRON

    BERGNA, ANNALISAUniversità degli Studi di Milano2024

    … rate gave a mean of 3.8×10−4 s/s/y (95%HPD: 3.35×10−4–4.39×10-4), 4.87×10-4 s/s/y (95%HPD: 4.18×10-4–5.54×10-4) and 7.57×10-4 s/s/y (95%HPD: 6.65×10-4–8.48×10-4) for 20E.EU1 clade, and Alpha and Delta variant, respectively. The skyline plot of 20E.EU1 dataset showed a rapid increase of …

    milano Repository record

  20. Total evidence phylogeny of ducks, geese and swans(family Anatidae): implications for macroevolution andbiogeography

    Hancocks, G2022

    … originated in the Early Miocene about 19 Ma (95% HPD 14.8-29.0 Ma). The undated and dated total evidence topologies were also used to reconstruct the evolution ofselected macroevolutionary traits (e.g., volancy versus non-volancy, diet, sexual system) and the biogeographical history of anatids, …

    salford

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