Yutong Duan
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View article: Saccharomyces boulardii and Bifidobacterium co-treatment for antibiotic associated diarrhea in pediatrics: a multicenter efficacy and safety study
Saccharomyces boulardii and Bifidobacterium co-treatment for antibiotic associated diarrhea in pediatrics: a multicenter efficacy and safety study Open
Background Recent or ongoing use of antibiotics causes diarrhea. Probiotic yogurt is generally used in antibiotic-induced diarrhea as adjuvant therapy. In recent times, there have been no clear recommendations or guidelines for the course …
View article: The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)
The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI) Open
A system of 5020 robotic fiber positioners was installed in 2019 on the Mayall Telescope, at Kitt Peak National Observatory. The robots automatically retarget their optical fibers every 10–20 minutes, each to a precision of several microns…
View article: MECHANICAL PROPERTIES OF HGMFSST COLUMNS UNDER AXIAL COMPRESSION-EXPERIMENT AND ANALYSIS
MECHANICAL PROPERTIES OF HGMFSST COLUMNS UNDER AXIAL COMPRESSION-EXPERIMENT AND ANALYSIS Open
High-strength grouting material (HGM) has the characteristics of early strength, high strength, high self-flow, and micro-expansion, but research on composite columns formed by steel tube and HGM is relatively scarce. Therefore, in this pa…
View article: Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument Open
The Dark Energy Spectroscopic Instrument (DESI) embarked on an ambitious 5 yr survey in 2021 May to explore the nature of dark energy with spectroscopic measurements of 40 million galaxies and quasars. DESI will determine precise redshifts…
View article: Experimental Study on Fatigue Performance of Welded Hollow Spherical Joints Reinforced by CFRP
Experimental Study on Fatigue Performance of Welded Hollow Spherical Joints Reinforced by CFRP Open
The risk of fatigue failure of welded hollow spherical joints (WHSJs) under alternating loads increases due to the inherent defects, the disrepair, and the demand for tonnage upgrades, of suspension cranes. The finite element analysis resu…
View article: Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument Open
The Dark Energy Spectroscopic Instrument (DESI) has embarked on an ambitious five-year survey to explore the nature of dark energy with spectroscopy of 40 million galaxies and quasars. DESI will determine precise redshifts and employ the B…
View article: A Fast Lightweight Based Deep Fusion Learning for Detecting Macula Fovea Using Ultra-Widefield Fundus Images
A Fast Lightweight Based Deep Fusion Learning for Detecting Macula Fovea Using Ultra-Widefield Fundus Images Open
Macula fovea detection is a crucial prerequisite towards screening and diagnosing macular diseases. Without early detection and proper treatment, any abnormality involving the macula may lead to blindness. However, with the ophthalmologist…
View article: A Fast Lightweight Based Deep Fusion Learning for Detecting Macula Fovea Using Ultra-Widefield Fundus Images
A Fast Lightweight Based Deep Fusion Learning for Detecting Macula Fovea Using Ultra-Widefield Fundus Images Open
Macula fovea detection is a crucial prerequisite towards screening and diagnosing macular diseases. Without early detection and proper treatment, any abnormality involving the macula may lead to blindness. However, with the ophthalmologist…
View article: Installation of the Dark Energy Spectroscopic Instrument at the Mayall 4-meter telescope
Installation of the Dark Energy Spectroscopic Instrument at the Mayall 4-meter telescope Open
The Dark Energy Spectroscopic Instrument (DESI) is a Stage IV ground-based dark energy experiment that will measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies a…
View article: Testing the 10 spectrograph units for DESI: approach and results
Testing the 10 spectrograph units for DESI: approach and results Open
The recently commissioned Dark Energy Spectroscopic Instrument (DESI) will measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 sqdeg will …
View article: Precision alignment and integration of DESI's focal plane using a laser tracker
Precision alignment and integration of DESI's focal plane using a laser tracker Open
Ground-Based and Airborne Telescopes VIII 2020; Virtual, Online; United States; 14 December 2020 through 22 December 2020; Code 166573.--Proceedings of SPIE - The International Society for Optical Engineering Volume 11445, 2020, Article nu…
View article: Installation of the Dark Energy Spectroscopic Instrument at the Mayall 4-meter telescope
Installation of the Dark Energy Spectroscopic Instrument at the Mayall 4-meter telescope Open
The Dark Energy Spectroscopic Instrument (DESI) is a Stage IV ground-based dark energy experiment that will measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies a…
View article: Performance of the Dark Energy Spectroscopic Instrument (DESI) fiber system
Performance of the Dark Energy Spectroscopic Instrument (DESI) fiber system Open
The recently commissioned Dark Energy Spectroscopic Instrument (DESI) will measure the expansion historyof the universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasarsover 14000 sq deg will b…
View article: The clustering of DESI-like luminous red galaxies using photometric redshifts
The clustering of DESI-like luminous red galaxies using photometric redshifts Open
We present measurements of the redshift-dependent clustering of a DESI-like luminous red galaxy (LRG) sample selected from the Legacy Survey imaging data set, and use the halo occupation distribution (HOD) framework to fit the clustering s…
View article: Preliminary Target Selection for the DESI Bright Galaxy Survey (BGS)
Preliminary Target Selection for the DESI Bright Galaxy Survey (BGS) Open
The Dark Energy Spectroscopic Instrument (DESI) will execute a nearly magnitude-limited survey of low redshift galaxies (0.05 ≤ z ≤ 0.4, median z ≈ 0.2). Clustering analyses of this Bright Galaxy Survey (BGS) will yield the most precise me…
View article: Preliminary Target Selection for the DESI Milky Way Survey (MWS)
Preliminary Target Selection for the DESI Milky Way Survey (MWS) Open
The DESI Milky Way Survey (MWS) will observe ≥8 million stars between 16 < r < 19 mag, supplemented by observations of brighter targets under poor observing conditions. The survey will permit an accurate determination of stellar kinematics…
View article: Tests of acoustic scale shifts in halo-based mock galaxy catalogues
Tests of acoustic scale shifts in halo-based mock galaxy catalogues Open
We utilize mock catalogues from high-accuracy cosmological N-body simulations to quantify shifts in the recovery of the acoustic scale that could potentially result from galaxy clustering bias. The relationship between galaxies and dark ma…
View article: Scratches from the Past: Inflationary Archaeology through Features in the Power Spectrum of Primordial Fluctuations
Scratches from the Past: Inflationary Archaeology through Features in the Power Spectrum of Primordial Fluctuations Open
Inflation may provide unique insight into the physics at the highest available energy scales that cannot be replicated in any realistic terrestrial experiment. Features in the primordial power spectrum are generically predicted in a wide c…
View article: Inflation and Dark Energy from spectroscopy at $z > 2$
Inflation and Dark Energy from spectroscopy at $z > 2$ Open
The expansion of the Universe is understood to have accelerated during two epochs: in its very first moments during a period of Inflation and much more recently, at $z < 1$, when Dark Energy is hypothesized to drive cosmic acceleration. Th…
View article: Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics
Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics Open
The hot dense environment of the early universe is known to have produced large numbers of baryons, photons, and neutrinos. These extreme conditions may have also produced other long-lived species, including new light particles (such as ax…
View article: DESI Focal Plate Alignment
DESI Focal Plate Alignment Open
The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the universe using the Baryon Acoustic Oscillation (BAO) technique. The spectra of 35 million galaxies and quasars over 14000 deg2 wi…