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Spectral performance of SKA log-periodic antennas I
E De Lera Acedo, CM Trott, RB Wayth, N Fagnoni, G Bernardi, B Wakley, LVE Koopmans, AJ Faulkner, JG bij de Vaate
Sep 02, 2019
This paper is the first in a series of papers describing the impact of
antenna instrumental artefacts on the 21-cm cosmology experiments to be carried
out by the low frequency instrument (SKA1-LOW) of the Square Kilometre...
Mapping Discrete Galaxies at Cosmic Dawn with 21 cm Observations
At cosmic dawn, the 21-centimeter signal from intergalactic hydrogen was
driven by Lyman-$\alpha$ photons from some of the earliest stars, producing a
spatial pattern that reflected the distribution of galaxies at that time....
Direct Optimal Mapping for 21 cm Cosmology
Abstract
Motivated by the desire for wide-field images with well-defined statistical properties for 21 cm cosmology, we implement an optimal mapping pipeline that computes a...
Z Xu, JN Hewitt, KF Chen, H Kim, JS Dillon, NS Kern, MF Morales, BJ Hazelton, R Byrne, N Fagnoni, EDL Acedo, Z Abdurashidova, T Adams, JE Aguirre, P Alexander, ZS Ali, R Baartman, Y Balfour, AP Beardsley, G Bernardi, TS Billings, JD Bowman, RF Bradley, P Bull, J Burba, S Carey, CL Carilli, C Cheng, DR DeBoer, M Dexter, N Eksteen, J Ely, A Ewall-Wice, R Fritz, SR Furlanetto, K Gale-Sides, B Glendenning, D Gorthi, B Greig, J Grobbelaar, Z Halday, J Hickish, DC Jacobs, A Julius, M Kariseb, J Kerrigan, P Kittiwisit, SA Kohn, M Kolopanis, A Lanman, PL Plante, A Liu, A Loots, YZ Ma, DH Edward MacMahon, L Malan, C Malgas, K Malgas, B Marero, ZE Martinot, A Mesinger, M Molewa, T Mosiane, SG Murray, AR Neben, B Nikolic, H Nuwegeld, AR Parsons, N Patra, S Pieterse, JC Pober, N Razavi-Ghods, J Robnett, K Rosie, P Sims, C Smith, H Swarts, N Thyagarajan, PVV Wyngaarden, PKG Williams, H Zheng
Oct 24, 2022
Constraining Baryon-Dark-Matter Scattering with the Cosmic Dawn 21-cm Signal.
The recent detection of an anomalously strong 21-cm signal of neutral hydrogen from cosmic dawn by the EDGES low-band radio experiment can be explained if cold dark matter particles scattered off the baryons draining excess...
Reforming of Soluble Biomass and Plastic Derived Waste Using a Bias-Free Cu<inf>30</inf>Pd<inf>70</inf>
Abstract: The production of clean fuels and chemicals from waste feedstocks is an appealing approach towards creating a circular economy. However, waste photoreforming commonly employs particulate photocatalysts, which display...
21cmVAE
Considerable observational efforts are being dedicated to measuring the
sky-averaged (global) 21-cm signal of neutral hydrogen from Cosmic Dawn and the
Epoch of Reionization. Deriving observational constraints on the...
Effect of high blood lead levels on Serum calcium and phosphorus in patients exposed to lead
CM Bindu and Deepti Gupta
Jan 03, 2015
Lead (Pb2+) intoxication is a serious occupational disease that constitutes a major public health problem. In the present work we studied the effect of lead on calcium and phosphorus on two groups namely Cases and Control. Blood...
Published by: IJHS Medical Association
The sum-of-squares hierarchy on the sphere and applications in quantum information theory
Abstract: We consider the problem of maximizing a homogeneous polynomial on the unit sphere and its hierarchy of sum-of-squares relaxations. Exploiting the polynomial kernel technique, we obtain a quadratic improvement of the...
HERA Phase i Limits on the Cosmic 21 cm Signal
Z Abdurashidova, JE Aguirre, P Alexander, ZS Ali, Y Balfour, R Barkana, AP Beardsley, G Bernardi, TS Billings, JD Bowman, RF Bradley, P Bull, J Burba, S Carey, CL Carilli, C Cheng, DR DeBoer, M Dexter, E De Lera Acedo, JS Dillon, J Ely, A Ewall-Wice, N Fagnoni, A Fialkov, R Fritz, SR Furlanetto, K Gale-Sides, B Glendenning, D Gorthi, B Greig, J Grobbelaar, Z Halday, BJ Hazelton, S Heimersheim, JN Hewitt, J Hickish, DC Jacobs, A Julius, NS Kern, J Kerrigan, P Kittiwisit, SA Kohn, M Kolopanis, A Lanman, P La Plante, T Lekalake, D Lewis, A Liu, YZ Ma, D Macmahon, L Malan, C Malgas, M Maree, ZE Martinot, E Matsetela, A Mesinger, J Mirocha, M Molewa, MF Morales, T Mosiane, JB Munoz, SG Murray, AR Neben, B Nikolic, CD Nunhokee, AR Parsons, N Patra, S Pieterse, JC Pober, Y Qin, N Razavi-Ghods, I Reis, J Ringuette, J Robnett, K Rosie, MG Santos, S Sikder, P Sims, C Smith, A Syce, N Thyagarajan, PKG Williams, H Zheng
Jan 28, 2022
Recently, the Hydrogen Epoch of Reionization Array (HERA) collaboration has
produced the experiment's first upper limits on the power spectrum of 21-cm
fluctuations at z~8 and 10. Here, we use several independent theoretical...
Effect of high blood lead levels on Serum calcium and phosphorus in patients exposed to lead
CM Bindu and Deepti Gupta
Jan 03, 2015
Lead (Pb2+) intoxication is a serious occupational disease that constitutes a major public health problem. In the present work we studied the effect of lead on calcium and phosphorus on two groups namely Cases and Control. Blood...
Published by: IJHS Medical Association
Qualitative analysis of small (≤2 cm) regenerative nodules, dysplastic nodules and well-differentiated HCCs with gadoxetic acid MRI
M Di Martino, M Anzidei, F Zaccagna, L Saba, S Bosco, M Rossi, S Ginanni Corradini, C Catalano
Feb 02, 2017
$\textbf{BACKGROUND}$: The characterization of small lesions in cirrhotic patients is extremely difficult due to the overlap of imaging features among different entities in the step-way of the hepatocarcinogenesis. The aim of...
Peering into the dark (ages) with low-frequency space interferometers
Léon V E Koopmans, Rennan Barkana, Mark Bentum, Gianni Bernardi, Albert-Jan Boonstra, Judd Bowman, Jack Burns, Xuelei Chen, Abhirup Datta, Heino Falcke, Anastasia Fialkov, Bharat Gehlot, Leonid Gurvits, Vibor Jelić, Marc Klein-Wolt, Joseph Lazio, Daan Meerburg, Garrelt Mellema, Florent Mertens, Andrei Mesinger, André Offringa, Jonathan Pritchard, Benoit Semelin, Ravi Subrahmanyan, Joseph Silk, Cathryn Trott, Harish Vedantham, Licia Verde, Saleem Zaroubi, Philippe Zarka
Oct 18, 2021
The Dark Ages and Cosmic Dawn are largely unexplored windows on the infant Universe (z ~ 200-10). Observations of the redshifted 21-cm line of neutral hydrogen can provide valuable new insight into fundamental physics and...
Published by: Experimental astronomy
Peering into the dark (ages) with low-frequency space interferometers
Léon VE Koopmans, Rennan Barkana, Mark Bentum, Gianni Bernardi, Albert-Jan Boonstra, Judd Bowman, Jack Burns, Xuelei Chen, Abhirup Datta, Heino Falcke, Anastasia Fialkov, Bharat Gehlot, Leonid Gurvits, Vibor Jelić, Marc Klein-Wolt, Joseph Lazio, Daan Meerburg, Garrelt Mellema, Florent Mertens, Andrei Mesinger, André Offringa, Jonathan Pritchard, Benoit Semelin, Ravi Subrahmanyan, Joseph Silk, Cathryn Trott, Harish Vedantham, Licia Verde, Saleem Zaroubi, Philippe Zarka
Oct 22, 2021
The Dark Ages and Cosmic Dawn are largely unexplored windows on the infant Universe (z ~ 200-10). Observations of the redshifted 21-cm line of neutral hydrogen can provide valuable new insight into fundamental physics and...
Bio-Electrocatalytic Conversion of Food Waste to Ethylene via Succinic Acid as the Central Intermediate
CM Pichler, S Bhattacharjee, E Lam, L Su, A Collauto, MM Roessler, SJ Cobb, VM Badiani, M Rahaman, E Reisner
Dec 12, 2022
Ethylene is an important feedstock in the chemical industry, but currently requires production from fossil resources. The electrocatalytic oxidative decarboxylation of succinic acid offers in principle an environmentally...
Deriving an optimal threshold of waist circumference for detecting cardiometabolic risk in sub-Saharan Africa.
K Ekoru, GAV Murphy, EH Young, H Delisle, CS Jerome, F Assah, B Longo-Mbenza, JPD Nzambi, JBK On'Kin, F Buntix, MC Muyer, DL Christensen, CS Wesseh, A Sabir, C Okafor, ID Gezawa, F Puepet, O Enang, T Raimi, E Ohwovoriole, OO Oladapo, P Bovet, W Mollentze, N Unwin, WK Gray, R Walker, K Agoudavi, S Siziya, J Chifamba, M Njelekela, CM Fourie, S Kruger, AE Schutte, C Walsh, D Gareta, A Kamali, J Seeley, SA Norris, NJ Crowther, D Pillay, P Kaleebu, AA Motala, MS Sandhu
Sep 26, 2018
BACKGROUND: Waist circumference (WC) thresholds derived from western populations continue to be used in sub-Saharan Africa (SSA) despite increasing evidence of ethnic variation in the association between adiposity and...
Digging Deeper: The Impact of Depth on Soil Organic Matter Stabilization Dynamics in a Forage System
Finnleigh Shane Doherty
Jan 01, 0001
Utilizing agriculture as a resource to mitigate the increased atmospheric CO2 fueling the climate crisis requires transformation of soils from a carbon (C) source into a C sink by investing in root-microbial communities to...
Forage Crops depth soil organic matter POX-C Mineralizable C ATR- FTIR Spectroscopy analytical chemistry biogeochemistry Organic chemistry Soil Science
Published by: Ursinus College
Increasing Agricultural Soil Health Through Crop Diversity
Sabrina Doherty
Jan 01, 0001
Human activities, including agricultural production, promote global climate warming by increasing atmospheric carbon dioxide (CO2) concentrations. Soil disturbances release stored soil carbon (C) as CO2 alongside depleting soil...
Published by: Ursinus College
Talking About Race in the College Classroom: An Analysis of Facework
Katelyn Doherty
Jan 01, 0001
A review of research on talking about race in the college classroom revealed that scholars have focused on identifying students' struggles and considering the impact of intense discussions have on students. Specifically, Miller...
Face Facework Higher Education race microaggression communication Gender, Race, Sexuality, and Ethnicity in Communication Higher Education Interpersonal and Small Group Communication Social and Behavioral Sciences
Published by: Ursinus College
Mission accomplished? Balancing market growth and moral legitimation in the fair trade moral market
How can moral market growth be pursued while sustaining the market’s moral legitimation? We address this question in a study of how Fairtrade International (FTI), the ‘market mediator’ responsible for regulating the fair trade...
Characteristics of Successful Inner-city Music Teachers
Mary Lynn Doherty
Oct 29, 2013
This descriptive study, performed in the spring of 2007, seeks to illustrate characteristics that are shared amongst successful inner-city music teachers at a choir school in Chicago, Illinois. Specifically, through both formal...
Published by: Faculty of Education
First Results from HERA Phase I
Z Abdurashidova, JE Aguirre, P Alexander, ZS Ali, Y Balfour, AP Beardsley, G Bernardi, TS Billings, JD Bowman, RF Bradley, P Bull, J Burba, S Carey, CL Carilli, C Cheng, DR DeBoer, M Dexter, E De Lera Acedo, T Dibblee-Barkman, JS Dillon, J Ely, A Ewall-Wice, N Fagnoni, R Fritz, SR Furlanetto, K Gale-Sides, B Glendenning, D Gorthi, B Greig, J Grobbelaar, Z Halday, BJ Hazelton, JN Hewitt, J Hickish, DC Jacobs, A Julius, NS Kern, J Kerrigan, P Kittiwisit, SA Kohn, M Kolopanis, A Lanman, P La Plante, T Lekalake, D Lewis, A Liu, D Macmahon, L Malan, C Malgas, M Maree, ZE Martinot, E Matsetela, A Mesinger, M Molewa, MF Morales, T Mosiane, SG Murray, AR Neben, B Nikolic, CD Nunhokee, AR Parsons, N Patra, R Pascua, S Pieterse, JC Pober, N Razavi-Ghods, J Ringuette, J Robnett, K Rosie, P Sims, S Singh, C Smith, A Syce, N Thyagarajan, PKG Williams, H Zheng
Feb 07, 2022
We report upper-limits on the Epoch of Reionization (EoR) 21 cm power
spectrum at redshifts 7.9 and 10.4 with 18 nights of data ($\sim36$ hours of
integration) from Phase I of the Hydrogen Epoch of Reionization Array (HERA).
The...
Characteristics of Successful Inner-city Music Teachers
Mary Lynn Doherty
Oct 29, 2013
This descriptive study, performed in the spring of 2007, seeks to illustrate characteristics that are shared amongst successful inner-city music teachers at a choir school in Chicago, Illinois. Specifically, through both formal...
Published by: Faculty of Education
Scratching the surface
Historic legal deeds are one of the most abundant resources in British archives, but also one of the most neglected. Despite the millions that survive, we know remarkably little about their manufacture, including the species of...
Sub-picosecond photo-induced displacive phase transition in two-dimensional MoTe<inf>2</inf>
Abstract Photo-induced phase transitions (PIPTs) provide an ultrafast, energy-efficient way for precisely manipulating the topological properties of transition-metal ditellurides and can be used...
B Peng, H Zhang, W Chen, B Hou, ZJ Qiu, H Shao, H Zhu, B Monserrat, D Fu, H Weng, CM Soukoulis
Jun 12, 2021
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