bluuebunny/crossref_metadata_2025 huggingface dataset:
Rapid design and implementation of a UVC decontamination room
Authors: Hummel Andrew , Ergai Awatef , Spiva LeeAnna , Toney Sharlene , Crawford Austin
Published: January 2022

With the recent COVID-19 pandemic that has swept the world and the nation, hospitals around the country have experienced shortages in Personal Protective Equipment, specifically N95 filter face-mask respirators (FFRs). This has created the need for facilities to develop sterilization processes to enable reuse of face masks by the health care personnel. Among the various methods of sterilization, UVC light exposure is the easiest to implement given the factors of time, safety, and availability. Face masks and/or other PPE are exposed to UVC light for a specified time to kill any viruses or bacteria that may reside on the surfaces of the masks. A collaborative effort was formed in April of 2020 between Wellstar Health System and Kennesaw State University to (1) setup an appropriate sterilization room at a Wellstar hospital (2) develop the procedural guidelines necessary to ensure quality control and (3) assess employees’ perceptions of the N95 FFR decontamination process and efficacy. This paper will first describe the methodology used to validate the layout of the room, which consists of a rudimentary analytical analysis of the UVC photon intensity from bulb-to-mask, computer simulations to determine the lighting power density throughout the room, and experimental measurements to confirm the appropriate energy deposition. This paper will then document the procedures for handling and processing the pre- and post-sterilized masks followed by employee survey findings. It is the hope of the authors that this paper will serve to provide a generic blueprint for hospitals and other organizations to follow if a future need arises for rapid UVC decontamination.
Higher-order structures of the foot-and-mouth disease virus RNA-dependent RNA polymerase required for genome replication
Authors: Loundras Eleni-Anna , Streetley James , Herod Morgan R. , Thompson Rebecca , Harris Mark , Bhella David , Stonehouse Nicola J.
Published: January 2022

Replication of many positive-sense RNA viruses occurs within intracellular membrane-associated compartments. These are thought to provide a favourable environment for replication to occur, concentrating essential viral structural and nonstructural components, as well as protecting these components from host-cell pathogen recognition and innate immune responses. However, the details of the molecular interactions and dynamics within these structures is very limited. One of the key components of the replication machinery is the RNA-dependent RNA polymerase, RdRp. This enzyme has been shown to form higher-order fibrils in vitro. Here, using the RdRp from foot-and-mouth disease virus (termed 3Dpol), we report fibril structures, solved at ~7-9 Å resolution by cryo-EM, revealing multiple conformations of a flexible assembly. Fitting high-resolution coordinates led to the definition of potential intermolecular interactions. We employed mutagenesis using a sub-genomic replicon system to probe the importance of these interactions for replication. We use these data to propose models for the role of higher-order 3Dpol complexes as a dynamic scaffold within which RNA replication can occur.
Modulation rate on adsorption and catalysis of 2D Pt: the effects of adsorbate-induced surface stress
Authors: Li Aojie , Hao Yuzhou , Feng Guang , Zhong Xiaoliang
Published: January 2022

Competition between intrinsic surface stress and adsorbate-induced surface stress.
Theoretical investigation into the effect of water on the N2O decomposition reaction over the Cu-ZSM-5 catalyst
Authors: Farhan Kuyyilthodi M. , Thabassum Ahammad N. K. , Ismail Thufail M. , Sajith P. K.
Published: January 2022

This study presents mechanistic insights into the N2O decomposition reaction on the dicopper active sites of Cu-ZSM-5 and explains the inhibitory action of water.
Seasonality of isoprene emissions and oxidation products above the remote Amazon
Authors: Langford B. , House E. , Valach A. , Hewitt C. N. , Artaxo P. , Barkley M. P. , Brito J. , Carnell E. , Davison B. , MacKenzie A. R. , Marais E. A. , Newland M. J. , Rickard A. R. , Shaw M. D. , Yáñez-Serrano A. M. , Nemitz E.
Published: January 2022

The Amazon rainforest is the largest source of isoprene emissions to the atmosphere globally.
The potential of probiotics in the amelioration of hyperuricemia
Authors: Zhao Hongyuan , Lu Zhaoxin , Lu Yingjian
Published: January 2022

Probiotics strategies for ameliorating hyperuricemia are promising based on the characteristics of probiotics and uric acid metabolism in humans. The administration of probiotics could ameliorate hyperuricemia and its related metabolic disorders.
A comparative study of the effect of a gentle ketogenic diet containing medium-chain or long-chain triglycerides on chronic sleep deprivation-induced cognitive deficiency
Authors: Wang Xueyan , Yang Yueqi , Xiao Aiai , Zhang Ning , Miao Mingyong , Wang Zhengping , Han Jun , Wen Min
Published: January 2022

Medium-chain triglyceride-enriched KD exhibited stronger effects than the long-chain triglyceride-enriched KD on preventing chronic sleep deprivation-induced cognitive deficiency via suppressing ferroptosis and improving synaptic plasticity.
Correction: Effects of extruded whole-grain sorghum (Sorghum bicolor (L.) Moench) based diets on calcium absorption and bone health of growing Wistar rats
Authors: Galán María Gimena , Weisstaub Adriana , Llopart Emilce Elina , Zuleta Angela , Drago Silvina Rosa
Published: January 2022

Correction for ‘Effects of extruded whole-grain sorghum (Sorghum bicolor (L.) Moench) based diets on calcium absorption and bone health of growing Wistar rats’ by María Gimena Galán et al., Food Funct., 2020, 11, 508–513, DOI: 10.1039/C9FO01817D.
Using small-angle scattering to guide functional magnetic nanoparticle design
Authors: Honecker Dirk , Bersweiler Mathias , Erokhin Sergey , Berkov Dmitry , Chesnel Karine , Venero Diego Alba , Qdemat Asma , Disch Sabrina , Jochum Johanna K. , Michels Andreas , Bender Philipp
Published: January 2022

The review presents the recent advances in small-angle scattering techniques for the characterization of magnetic nanoparticles and highlights the potential of these methods to facilitate the application-oriented nanoparticle design & synthesis.
Interfacial carrier transport properties of a gallium nitride epilayer/quantum dot hybrid structure
Authors: Wei Huiyun , Qiu Peng , Yu Meina , Song Yimeng , Li Ye , He Yingfeng , Peng Mingzeng , Liu Xiaohu , Zheng Xinhe
Published: January 2022

A suitable energy level arrangement is formed between GaN and CdSe QDs, and the GaN epilayer exhibits better electron extraction ability and faster interfacial electron transfer than the rutile TiO2 single crystal.
Hyperpolarization of 15N in an amino acid derivative
Authors: Saul Philip , Mamone Salvatore , Glöggler Stefan
Published: January 2022

A perdeuterated, 15N-labeled derivative of the amino acid glycine has been synthesized and polarized by means of para-hydrogen induced polarization (PHIP).
Cooperativity of steric bulk and H-bonding in coordination sphere engineering: heteroleptic PdII cages and bowls by design
Authors: Chen Bin , Holstein Julian J. , Platzek André , Schneider Laura , Wu Kai , Clever Guido H.
Published: January 2022

Coordination Sphere Engineering (CSE) allows non-statistical assembly of heteroleptic supramolecular architectures by fine adjustment of steric and electronic features around square-planar Pd(ii) cations with naphthyridine donors.
Improving the charge injection in bottom contact organic transistors by carbon electrodes
Authors: Huang Congcong , Ding Xiaohai , Ren Xiaochen , Yu Xi , Hu Wenping
Published: January 2022

An amorphous carbon film formed by a pyrolysis photoresist as the bottom contact source/drain electrode of OFETs to improve the charge injection as well as the device performance.
Light-induced perovskite dynamic transformation enabling a photodetector to mimic a neuromorphic vision sensing system
Authors: Song Yuqing , Xu Xiaobao , Zhang Yuanzhou , Han Zeyao , Liu Jiaxin , Li Junyu , Zou Yousheng
Published: January 2022

In this work, we employ transformational NH4PbI3·MA as the photoactive material, which makes the photodetector exhibit short-term synaptic plasticity and realize image transmission and prepocessing functions of a neuromorphic vision sensing system.
Pulsar wind nebula origin of the LHAASO-detected ultra-high energy γ-ray sources
Authors: Breuhaus M. , Reville B. , Hinton J. A.
Published: January 2022

The recent measurement by LHAASO of gamma-ray emission extending up to hundreds of TeV from multiple Galactic sources represents a major observational step forward in the search for the origin of the Galactic cosmic rays. The burning question is if this ultra-high-energy emission is associated with the acceleration of protons and/or nuclei to PeV energies, or if it can be associated with PeV-electron accelerators. A strong Klein-Nishina suppression of inverse Compton emission at these energies is unavoidable; nevertheless, we show here that inverse Compton emission can provide a natural explanation for the measured emission and that an association with the established PeV-electron accelerating source class of pulsar wind nebulae is also rather natural. However, a clear distinction between different models requires taking multi-wavelength data into account, having good knowledge of the local environmental conditions, and, in some cases, performing multi-source modelling.
The VLT-FLAMES survey of massive stars
Authors: Lennon D. J. , Dufton P. L. , Villaseñor J. I. , Evans C. J. , Langer N. , Saxton R. , Monageng I. M. , Toonen S.
Published: January 2022

Context. NGC 2004#115 was classified as a single lined Be spectroscopic binary in the Large Magellanic Cloud. Its Hα morphology is reminiscent of the Galactic systems LB-1 and HR 6819, both of which are proposed as either Be+BH or Be+stripped He-star systems.

Aims. Multi-epoch optical spectra of NGC 2004#115 are used to determine if this binary can be explained by either of these two scenarios, and hence shed additional light on these interesting systems.

Methods. VLT-FLAMES and SALT-HRS data covering a baseline of ∼20 years were analyzed to determine radial velocities and orbital parameters, while non-LTE model atmospheres were used to determine stellar parameters and the relative brightness of the system components. Archive MACHO, Gaia, and XMM-Newton data provide additional constraints on the system.

Results. NGC 2004#115 is found to be a triple system consisting of an inner binary with a period P = 2.92 d, eccentricity e ∼ 0.0, and mass function f = 0.07 M⊙. The only firmly detected star in this inner binary is a B2 star, the primary, with a projected rotational velocity (ve sin i) of 10 km s−1 and a luminosity of log L/L⊙ = 3.87. It contributes ∼60% of the total V-band light, with the tertiary contributing the other ∼40% of the light, while the secondary is not detected in the optical spectrum. The possibility that the primary is a low mass inflated stripped star is excluded since its Roche radius would be smaller than its stellar radius in such a compact system. A main sequence star of mass 8.6 M⊙ is therefore inferred; however, the assumption of synchronous rotation leads to a secondary mass in excess of 25 M⊙, which would therefore be a black hole. The tertiary is detected as a fainter blended component to the hydrogen and helium lines, which is consistent with a slightly less massive B-type star, though with ve sin i ∼ 300 km s−1. The data do not permit the characterization of the outer period, though it likely exceeds 120 days and is therefore in a stable configuration. The disk-like emission is variable, but may be associated with the inner binary rather than the rapidly rotating tertiary. XMM-Newton provides an upper limit of 5 × 1033 ergs s−1 in the 0.2–12 keV band which is consistent with, though not constraining, the system hosting a quiescent B+BH binary. A number of caveats to this scenario are discussed.
Emissions of flue gas during pulverized combustion of coal and waste woody biomass
Authors: Hodzic Nihad , Kazagic Anes , Kadic Kenan
Published: January 2022

In this paper results of research of co-firing coals from Middle Bosnian basin with waste woody biomass are presented. The research was conducted in the laboratory at the Faculty of Mechanical Engineering in Sarajevo. Tested fuels were subjected to pulverized combustion under various temperatures and various technical and technological conditions: different mass ratio of fuel components in the mixture, different coefficient of excess air for combustion, classic and staged air supply, and fuel staged into the reaction zone. The results are related to the emission of flue gas components with respect to the technological conditions of combustion. In addition to the valorization of the influence of the primary fuel composition and process temperature on the emission values of the flue gas components, it has been shown that the application of primary measures in the combustion chamber results in lower or higher positive effects in terms of reducing the emissions of individual components -e.g. the NOx emission is reduced from 837 mg/mn3 in conventional combustion to 710 mg/mn3 using air staging, while during combustion with fuel staging, the NOx emission is reduced in proportion to the part of the fuel that is introduced into the reaction zone subsequently.
Underperformance analysis of wind turbines -Icing -
Authors: Mkhaitari Rachid , Zazoui Mimoun , Mir Yamina
Published: January 2022

Wind energy systems are the most promising resources on green energy, it needs to follow the increase demand of electrical energy not only by the future technologies but also with improving the performances. In this work, we present a first performance study of the “Icing System” that monitors and controls the ice detection on blades, it stops the machines when the corresponded sensor detects the presence of ice on the blades, the problem is that the status “Ice Detection Stop” is activated out of consideration of the nacelle’s position and its direction, this stop cost a lot in terms of production and incomes. The turbine restart automatically when the ice is heated and after several hours of production losses. The main idea of this article is to set up a configuration on monitoring system that refers to available database and the daily registered data from the solar met mast to fix the nacelle direction taking into consideration the sunrise and sunset. Using the sun energy, the applied process will help to speed up the heating of ice on blades and minimise the impact of the stops. As result, the availability will improve as well as the annual production of energy.
A bi-objective optimization approach based on Lp-metric method in broiler production network: a case study
Authors: Tahraoui Nacera , Sari-Triqui Lamia , Bennkrouf Mohammed
Published: January 2022

In this work, we analyse the chicken production in a poultry network composed of a set of farms that serves a slaughterhouse in the city of Tlemcen. Each farm has a chicken house dedicated to breeding, and each chicken house has three breeding modes: manual breeding, semi-automatic breeding, and automatic breeding. And each mode consumes an appropriate energy level depending on the degree of automation used, which directly affects the quality of the chicken. The objective of this study is to determine the best energy adaptation within the farm to obtain good quality chickens. The problem of this activity is the choice of the right energy level of breeding, which consumes a minimum energy value, and gives a good quality of chickens. Knowing that the quality improves with the increase of energy, this study serves to develop mathematical modelling of two objectives: minimization of energy consumption and maximization of the chicken quality produced. The two objectives are optimized independently, and then they are joined by adapting the LP-metric method to help the breeders choose the optimal energy level to obtain good quality chickens.
The combination of a NEH heuristic and an LP metric to solve a flow-shop scheduling problem taking into account energy consumption and production costs: a case study
Authors: Fellahi Hichem , Siyoucef karima Sihem , Sari-Triqui Lamia
Published: January 2022

In this work, we study a multi-objective problem in a pharmaceutical production unit composed of several production stations that produce several kinds of products. The goal of this work, in a first step, is to propose a scheduling at the production unit in order to establish a synchronization of the different tasks on the m-machines. The problem can be formulated by the scheduling of a multi-product flow-shop.Then, we take into account the energy constraints of each task to be done. The problem can be formulated by a linear multi-objective MILP program, where the first objective is to determine the best sequence that minimizes the production and launch costs. In addition, the second objective is to find the best sequence that minimizes energy consumption. The problem is formulated and solved by combining the NEH heuristic and the LP-metric method to determine an intermediate solution between minimizing production costs and minimizing energy consumption.
Smart wall by wireless sensor network toward building energy optimization
Authors: Doublali Asmaa , Jilbab Abdlilah , Bojji Chakib , Idchabani Rachida
Published: January 2022

Buildings design and operation are responsible for occupant comfort. Buildings facades and walls can be engineered to control solar energy for photovoltaic electricity generation, daylighting, heating, ventilation, thermal insulation, and energy storage. Adaptive facades and intelligent walls integrate real-time control technologies to adapt to the occupant’s requirements and preferences. Data transmission and information control in the modern building are gaining increasing importance. Implementing wireless network systems based on wireless communication technologies and protocols with low energy demand is crucial. This paper presents the simulation of wireless networks based on Bluetooth Low Energy (BLE) transmission nodes with an energy harvesting system solution. The results showed the performance of the wireless sensor network model toward the solar energy harvesting solution.
Microstructural, morphological and optical properties of sprayed thin films of indium doped gadolinium oxide (Gd2O3: In)
Authors: Rossi Zaid , Brioual Bilal , Aouni Abdesamad , Diani Mustapha , Addou Mohammed
Published: January 2022

This paper featured a study on undoped and Indium doped Gadolinium oxide Gd2O3: In thin films, elaborated on a glass substrates at temperature of 500 °C by homemade Spray Pyrolysis technique, at different Indium concentrations as follow 0, 2, 4, 6 and 8 at %. This thin layers, where a subjects to a numerous characterization techniques to study the effect caused by introducing the dopant element “Indium” in Gadolinium oxide lattice on the structural properties (X-Ray Diffraction and Raman spectroscopy) and optical properties. The structural characterization carried by the X-ray diffraction (XRD) reveals a polycrystalline Monoclinic B-type structure for all Gd2O3:In thin films. Moreover, these findings are verified by the Raman spectroscopy results. Concerning the optical properties of our thin films, the optical measurements carried by UV-VIS-NIR spectrophotometer shows an increase in the transmittance value within the visible region [370-900 nm] and in the band gap energy value by raising Indium doping rate from 0 at % to 6 at %, also the disorder caused inside the thin films were estimated by the Urbach equation. That said, the 2 at % Indium doped gadolinium oxide thin film provides interesting results that can be applied in solar cells as an optical window material.
Comparison of three solar water heaters technologies through a full-scale experimental station
Authors: Boukdir Youssef , El Omari Hamid
Published: January 2022

The aim of the solar water heater designed for Tahala grid project, is to provide renewable energy to the residents of Tahala village in southern of Morocco, our contribution as LERED* laboratory to this project consists of the creation of a novel solar water heater, with a long lifetime, high efficiency, reliability and quality, that uses solar concentration instead of direct exposition in the hope of reaching high temperatures even during cold weather and the winter season. In order to evaluate the performances of this new solar water heater, it was necessary to build a full-scale solar water heater test bench station, which allows to monitor the thermal station remotely, in order to start new experiments, measure various parameters such as cumulated thermal energy, the maximum reached temperature, efficiency, and so on, in order to compare the performances of each solar water heating technology in various weather conditions. In this study, we choose to test and compare three solar water heater technologies: water-in-glass evacuated tube collectors, selective surface flat-plate collectors, and the novel design that consists of a Fresnel mirrors concentrator with a water-in-glass evacuated tube collector with a dual sun tracking system. The result of experiments shows that under normal weather conditions, the Fresnel mirrors concentrator efficiency reached 48%, followed by the evacuated tube collector that have an efficiency of 42.3 %, and then come at the last position the flat-plate collector with an efficiency 36.3%.
Use of gamma irradiation for decorative coloring of glass in the Moroccan NIAR facility
Authors: El-ouardi Youssef , Aknouch Adil , Dadouch Ahmed , Mouhib Mohammed , Benmessaoud Mounir
Published: January 2022

The applications that cover the use of ionizing radiation are numerous, very diverse and belong to several fields of activity such as, the medical and agricultural fields etc. The aim of this work is to highlight an application of decorative glass coloring by gamma radiation. Crystal white glass cups are placed on small rotating tables and subjected to exposure to gamma radiation from the cobalt-60 gamma irradiator of the National Institute of Agronomic Research (INRA-Morocco / Tangier) for doses between 0 and 1.5 KGy. The results obtained show the variation in the color of glass between light brown to dark brown depending on the absorbed dose.
Electric vehicle battery SOC estimation under different speed references
Authors: Jebahi Radhia , Ben Fatma Nawris , Aloui Helmi
Published: January 2022

The present work aims to improve the traction chain system of a leisure electric vehicle equipped with a Li-S battery. For that, an equivalent circuit model of the battery was developed and implanted in the traction chain model in order to investigate the autonomy of the electric vehicle under different drive-cycles. The obtained results show a good quality of the studied vehicle in terms of autonomy and energy consumption.
Prediction and Simulation of electrical and optical characteristics of an OLED based on P3BEdotBT3A organic material
Authors: El karkri Anass , El mhamedi Imane , El malki Zakaria
Published: January 2022

The OLED “organic light-emitting diode” has been highly industrialized for several years, especially since their use in smartphones and televisions. OLEDs have attracted a lot of attention because of their desirable characteristics including their low consumption of electrical energy, their flexibility... Our work focuses on the simulation of a single-layer OLED based on an organic material (ITO/P3BEdotBT3A/Ca) using the SILVACO-TCAD simulation software. This simulation allowed us to visualize the operational distribution of Langevin recombination within the proposed structure, and to determine the electrical and optical characteristics, such as luminescence power, current versus electric field, and current versus voltage (the I-V characteristics) for different thicknesses and doping concentration of the emitting layer.
An hybrid control strategy design for Photovoltaic battery charger
Authors: Rkik Iliass , El khayat Mohamed , Hamidane Hafsa , Ed-Dahhak Abdelali , Guerbaoui Mohammed , Lachhab Abdeslam
Published: January 2022

This work presents the design and the modelling of an improved lead acid Battery charger for solar photovoltaic applications. In this context, the control unit of the battery charger is composed of two intelligent controllers. In the first state, an MPPT controller based on an Adaptive neuro-fuzzy inference system (ANFIS) is used to extract the full maximum power provided by the PV array, in the second stage, the control unit switches to the regulator mode on the basis of a fuzzy logic control block that offers the three charging stages according to DIN 41773 standard for lead-acid battery. In order to demonstrate the performance of the ANFIS controller, this paper presents also a comparison of several MPPT techniques for solar PV applications.
Principal Component and Hierarchical Cluster Analysis of major compounds variation of Moroccan Rosmarinus officinalis essential oil
Authors: Annemer Saoussan , Farah Abdellah , Stambouli Hamide , Bouayoun Taoufik , El ouali lalami Abdelhakim , Ez zoubi Yassine
Published: January 2022

The main compounds or the chemical composition in general is influenced by different factors such as the harvest period, the origin of the plant and the climatic conditions. The composition of Rosmarinus officinalis essential oils during 9 harvest periods (January 2018 to April 2019) was determined by and gas chromatography coupled with mass spectrometry (GC/MS). The main constituents were 1,8-Cineole (33.33-52.59%), Camphor (7.07-20.09%), α-pinene (11.93-16.22%). Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) revealed two main groups namely First group “winter season” which contains a high amount of Camphor, Second group “summer season” which has a significant amount of 1,8-Cineole and an intermediate group “ which shares the same characterize of the two groups. In conclusion, these results allow us to understand the variation of major compounds according to the seasons for the exploitation of these compounds in different fields.
Galaxy cluster number counts with individual lensing mass estimates: Forecasts for Euclid
Authors: Artis E. , Melin J.-B. , Bartlett J.G. , Murray Calum ,   on behalf of the Euclid Consortium
Published: January 2022

The ΛCDM model is gradually becoming challenged by observational data. Upcoming cosmological surveys will increase the number of detected galaxy clusters by several orders of magnitude. Therefore, clusters will shortly provide precise cosmological constraints and improve our understanding of structure formation in the Universe. In the following, we present a cluster likelihood based on individual weak lensing mass estimates and forecast Euclid’s performances within this framework. We use a matched filter for weak lensing mass estimation and model its characteristics with a set of simulations. We use the Flagship N-body simulation to emulate the expected cluster mass distribution of a Euclid-like sample and test our statistical framework against it. Finally, we simultaneously constrain the observable-mass relation and the cosmological parameters.
Characterizing the bulk and turbulent gas motions in galaxy clusters
Authors: Dupourqué Simon , Pointecouteau Etienne , Clerc Nicolas , Eckert Dominique
Published: January 2022

The most massive halos of matter in the Universe grow via accretion and merger events throughout cosmic times. These violent processes generate shocks at many scales and induce large-scale bulk and turbulent motions. These processes inject kinetic energy at large scales, which is transported to the viscous dissipation scales, contributing to the overall heating and virialisation of the halo, and acting as a source of non-thermal pressure in the intra-cluster medium. Characterizing the physical properties of these gas motions will help us to better understand the assembly of massive halos, hence the formation and the evolution of these large-scale structures. We base this characterization on the study of the X-ray and Sunyaev-Zel’dovich effect brightness fluctuations. Our work relies on three complementary samples covering a wide range of red-shifts, masses and dynamical states of clusters. We present the results of our X-ray analysis for the low redshift sample, X-COP, and a subsample of higher redshift clusters. We investigate the derived properties according to the dynamical state of our clusters, and the possibility of a self-similar behaviour based on the reconstructed gas motions power-spectra and the correlation with various morphological indicators.
Observations with KIDs Interferometer Spectrum Survey (KISS)
Authors: Fasano A. , Catalano A. , Macías-Pérez J.F. , Aguiar M. , Beelen A. , Benoit A. , Bideaud A. , Bounmy J. , Bourrion O. , Bres G. , Calvo M. , Castro-Almazán J.A. , de Bernardis P. , De Petris M. , de Taoro A.P. , Fernández-Torreiro M. , Garde G. , Génova-Santos R. , Gomez A. , Gómez-Renasco M.F. , Goupy J. , Hoarau C. , Hoyland R. , Lagache G. , Marpaud J. , Marton M. , Monfardini A. , Peel M.W. , Pisano G. , Ponthieu N. , Rebolo R. , Roudier S. , Rubiño-Martín J.A. , Tourres D. , Tucker C. , Vescovi C.
Published: January 2022

We describe the preliminary on-sky results of the KIDs Interferometer Spectrum Survey (KISS), a spectral imager with a 1 deg field of view (FoV). The instrument operates in the range 120–180 GHz from the 2.25m Q-U-I JOint TEnerife telescope in Teide Observatory (Tenerife, Canary Islands), at 2 395m altitude above sea level. Spectra at low resolution, up to 1.45 GHz, are obtained using a fast (3.72 Hz mechanical frequency) Fourier transform spectrometer, coupled to a continuous dilution cryostat with a stabilized temperature of 170mK that hosts two 316-pixel arrays of lumped-element kinetic inductance detectors. KISS generates more than 3 000 spectra per second during observations and represents a pathfinder to demonstrate the potential for spectral mapping with large FoV.We give an overall description of the spectral mapping paradigm and we present recent results from observations, in this paper.
Forecasting the Y500 – M500 scaling relation from the NIKA2 SZ Large Program
Authors: Kéruzoré F. , Artis E. , Macías-Pérez J.-F. , Mayet F. , Muñoz-Echeverría M. , Perotto L. , Ruppin F.
Published: January 2022

One of the key elements needed to perform the cosmological exploitation of a cluster survey is the relation between the survey observable and the cluster masses. Among these observables, the integrated Compton parameter Y is a measurable quantity in Sunyaev-Zeldovich (SZ) surveys, which tightly correlates with cluster mass. The calibration of the relation between the Compton parameter Y500 and the mass M500 enclosed within radius R500 is one of the scientific goals of the NIKA2 SZ Large Program (LPSZ). We present an ongoing study to forecast the constraining power of this program, using mock simulated datasets that mimic the large program sample, selection function, and typical uncertainties on Y500 and M500. We use a Bayesian hierarchical modelling that enables taking into account a large panel of systematic effects. Our results show that the LPSZ can yield unbiased estimates of the scaling relation parameters for realistic input parameter values. The relative uncertainties on these parameters is ~ 10% for the intercept and slope of the scaling relation, and ~ 34% for its intrinsic scatter, foreshadowing precise estimates to be delivered by the LPSZ.
Overdensity of SubMillimiter Galaxies in the GJ526 Field mapped with the NIKA2 Camera
Authors: Lestrade J.-F. , Adam R. , Ade P. , Ajeddig H. , André P. , Artis E. , Aussel H. , Beelen A. , Benoît A. , Berta S. , Bing L. , Bourrion O. , Calvo M. , Catalano A. , Coulais A. , De Petris M. , Désert F.-X. , Doyle S. , Driessen E. F. C. , Gomez A. , Goupy J. , Kéruzoré F. , Kramer C. , Ladjelate B. , Lagache G. , Leclercq S. , Macías-Pérez J.-F. , Maury A. , Mauskopf P. , Mayet F. , Monfardini A. , Muñoz-Echeverría M. , Perotto L. , Pisano G. , Ponthieu N. , Revéret V. , Rigby A. J. , Ritacco A. , Romero C. , Roussel H. , Ruppin F. , Schuster K. , Shu S. , Sievers A. , Tucker C. , Zylka R.
Published: January 2022

Using the NIKA2 dual band millimeter camera installed on the IRAM30m telescope, we have mapped a relatively large field (~ 70 arcmin2) in the direction of the star GJ526 to investigate the nature of the sources found with the MAMBO camera at 1.2 mm ten years earlier. We have found that they must be dust-obscured galaxies (SMGs) in the background beyond the star. The new NIKA2 map at 1.15 mm reveals additional sources and, in fact, an overdensity of SMGs predominantly distributed along a filament-like structure in projection on the sky across the whole observed field. We speculate this might be a cosmic filament at high redshift as revealed in cosmological hydrodynamical simulations. Measurement of spectroscopic redshifts of the SMGs in the candidate filament is required now for a definitive confirmation of the nature of the structure.
HI and H2 gas evolution over cosmic times: ColdSIM
Authors: Maio Umberto
Published: January 2022

We present first results of cold cosmic gas evolution obtained through a set of state-of-the-art numerical simulations (ColdSIM). We model time-dependent atomic and molecular non-equilibrium chemistry coupled to hydrodynamics, star formation, feedback effects, various UV backgrounds as suggested by the recent literature, HI and H2 self-shielding, H2 dust grain catalysis, photoelectric heating and cosmic-ray heating. By means of such nonequilibriumcalculations we are finally able to reproduce the latest HI and H2 observational data. Consistently with available determinations, neutral-gas mass density parameter results around Ωneutral ∼ 10−3 and increases from lower to higher redshift (z). The molecular-gas mass density parameter shows peak values of ΩH2 ∼ 10−4, while expected H2 fractions can be as high as 50% of the cold gas mass at z ∼ 4-8, in line with the latest measurements from high-z galaxies. These values agree with observations up to z ∼ 7 and both HI and H2 trends are well reproduced by our non-equilibrium H2-based star formation modelling. Corresponding H2 depletion times remain below the Hubble time and comparable to the dynamical time at all epochs. This implies that non-equilibrium molecular cooling is efficient at driving cold-gas collapse in a variety of environments and since the first half Gyr. Our findings suggest that, besides HI, non-equilibrium H2 analyses are key probes for assessing cold gas and the role of UV background radiation.
Multi-probe analysis of the galaxy cluster CL J1226.9+3332: Hydrostatic mass and hydrostatic-to-lensing bias
Authors: Muñoz-Echeverría M. , Adam R. , Ade P. , Ajeddig H. , André P. , Arnaud M. , Artis E. , Aussel H. , Bartalucci I. , Beelen A. , Benoît A. , Berta S. , Bing L. , Bourrion O. , Calvo M. , Catalano A. , De Petris M. , Désert F.-X. , Doyle S. , Driessen E. F. C. , Ferragamo A. , Gomez A. , Goupy J. , Kéruzoré F. , Kramer C. , Ladjelate B. , Lagache G. , Leclercq S. , Lestrade J.-F. , Macías-Pérez J.-F. , Maury A. , Mauskopf P. , Mayet F. , Monfardini A. , Paliwal A. , Perotto L. , Pisano G. , Pointecouteau E. , Ponthieu N. , Pratt G. W. , Revéret V. , Rigby A. J. , Ritacco A. , Romero C. , Roussel H. , Ruppin F. , Schuster K. , Shu S. , Sievers A. , Tucker C. , Yepes G.
Published: January 2022

We present a multi-probe analysis of the well-known galaxy cluster CL J1226.9+3332 as a proof of concept for multi-wavelength studies within the framework of the NIKA2 Sunyaev-Zel’dovich Large Program (LPSZ). CL J1226.9+3332 is a massive and high redshift (z = 0.888) cluster that has already been observed at several wavelengths. A joint analysis of the thermal SZ (tSZ) effect at millimeter wavelength with the NIKA2 camera and in X-ray with theXMM-Newtonsatellite permits the reconstruction of the cluster’s thermodynamical properties and mass assuming hydrostatic equilibrium. We test the robustness of our mass estimates against different definitions of the data analysis transfer function. Using convergence maps reconstructed from the data of the CLASH program we obtain estimates of the lensing mass, which we compare to the estimated hydrostatic mass. This allows us to measure the hydrostatic-to-lensing mass bias and the associated systematic effects related to the NIKA2 measurement. We obtainM500HSE= (7:65 ± 1:03) × 1014M⊙andM500lens= (7:35 ± 0:65) × 1014M⊙, which implies a HSE-to-lensing bias consistent with 0 within 20%.
Modelling the cold dust in nearby spiral galaxies with radiative transfer
Authors: Nersesian Angelos , Baes Maarten , Madden Suzanne C.
Published: January 2022

Cosmic dust grains are one of the fundamental ingredients of the interstellar medium (ISM). In spite of their small contribution to the total mass budget, dust grains play a significant role in the physical and chemical evolution of galaxies. Over the past decades, a plethora of multi-wavelength data, from UV to far-infrared, has increased substantially our knowledge on the dust properties of nearby galaxies. Nevertheless, one regime of the spectrum, the mm range, remains relatively unexplored. Thanks to the new, high-resolution data in the mm range observed with the NIKA2 instrument and our radiative transfer framework, we aim to firmly characterise the physical properties of the very cold dust (<15K), and to quantify the importance of different emission mechanisms in the mm. So far, we have developed a methodology to use dust radiative transfer modelling and applied it to a small group of face-on spiral galaxies. The combination of the new NIKA2 data with our radiative transfer techniques would provide the right conditions to generate an accurate model of the interplay between starlight and dust in a sizeable sample of spatiallyresolved nearby galaxies.
Pressure profiles of distant Galaxy clusters with Planck-SPT data
Authors: Oppizzi Filippo , De Luca Federico , Bourdin Hervé , Mazzotta Pasquale ,   the CHEX-MATE collaboration
Published: January 2022

We present a full set of numerical tools to extract Galaxy Cluster pressure profiles from the joint analysis of Planck and South Pole Telescope (SPT) observations. Pressure profiles are powerful tracers of the thermodynamic properties and the internal structure of the clusters. Tracing the pressure over the cosmic times allows one to constraints the evolution of the cluster structure and the contribution of astrophysical phenomena. SPT and Planck are complementary to constrain the cluster structure at various spatial scales. The SPT cluster catalogue counts 677 cluster candidates up to redshift 1.7, it is a nearly mass-limited sample, an ideal benchmark to test cluster evolution. We developed a pipeline to first separate the cluster signal from the background and foreground components and then jointly fit a parametric profile model on a combination of Planck and SPT data. We validate our algorithm on a subsample of six clusters, common to the SPT and the CHEX-MATE catalogues, comparing the results with the profiles obtained from X-ray observations with XMM-Newton.
The NIKA2 Sunyaev-Zeldovich Large Program: Precise galaxy cluster physics for an accurate cluster-based cosmology
Authors: Perotto L. , Adam R. , Ade P. , Ajeddig H. , André P. , Arnaud M. , Artis E. , Aussel H. , Bartalucci I. , Beelen A. , Benoît A. , Berta S. , Bing L. , Bourrion O. , Calvo M. , Catalano A. , De Petris M. , Désert F.-X. , Doyle S. , Driessen E. F. C. , Ferragamo A. , Gomez A. , Goupy J. , Kéruzoré F. , Kramer C. , Ladjelate B. , Lagache G. , Leclercq S. , Lestrade J.-F. , Macías-Pérez J.-F. , Maury A. , Mauskopf P. , Mayet F. , Monfardini A. , Muñoz-Echeverría M. , Paliwal A. , Pisano G. , Pointecouteau E. , Ponthieu N. , Pratt G.W. , Revéret V. , Rigby A. J. , Ritacco A. , Romero C. , Roussel H. , Ruppin F. , Schuster K. , Shu S. , Sievers A. , Tucker C. , Yepes G.
Published: January 2022

The NIKA2 Guaranteed-Time SZ Large Program (LPSZ) is dedicated to the high-angular resolution SZ mapping of a representative sample of 45 SZ-selected galaxy clusters drawn from the catalogues of the Planck satellite, or of the Atacama Cosmology Telescope. The LPSZ sample spans a mass range from 3 to 11 × 1014M⊙ and a redshift range from 0:5 to 0:9, extending to higher redshift and lower mass the previous samples dedicated to the cluster mass calibration and universal properties estimation. The main goals of the LPSZ are the measurement of the average radial profile of the ICM pressure up to R500 by combining NIKA2 with Planck or ACT data, and the estimation of the scaling law between the SZ observable and the mass using NIKA2, XMM-Newton and Planck/ACT data. Furthermore, combining LPSZ data with existing or forthcoming public data in lensing, optical/NIR or radio domains, we will build a consistent picture of the cluster physics and further gain knowledge on the mass estimate as a function of the cluster morphology and dynamical state.

We give an overview of the LPSZ, present recent results and discuss the future implication for cosmology with galaxy clusters.
Relativistic SZ maps and electron gas temperature spectroscopy
Authors: Remazeilles Mathieu
Published: January 2022

While third-generation CMB experiments have allowed to release the first maps of Compton-y distortion due to thermal Sunyaev-Zeldovich (SZ) effect, next-generation CMB experiments should allow us to map also the electron gas temperature, Te, across the sky through the detection of relativistic corrections to the thermal SZ effect. We discuss about experimental requirements to break the y-Te degeneracy of the observed SZ intensity, and propose a new component separation approach based on moment expansion to disentangle the y and Te observables of the relativistic SZ effect while mitigating foregrounds. We show how our approach offers a new spectroscopic view of the clusters not only across frequencies but now also across temperatures. We also show how the relativistic electron temperature power spectrum provides a new cosmological observable which may complement the Compton-y map power spectrum to break some of the parameter degeneracies in future cosmological SZ analyses.
Cosmology with galaxy clusters: Impact of theoretical and observational systematic uncertainties
Authors: Salvati Laura
Published: January 2022

In this talk I focus on how the modelling of the mass-observable relation and the halo mass function can impact the accuracy and precision of cosmological constraints inferred from galaxy clusters. I present a new analysis of clusters detected in mm wavelengths by the Planck satellite, highlighting the need of an improved description and calibration for the mass-observable relation. I also discuss how to improve our analysis in view of future cluster surveys, with a particular focus on the impact of the halo mass function calibration and the need for a universal definition.
Constraining AGN feedback model with SZ profile
Authors: Tanimura Hideki , Hinshaw Gary , McCarthy Ian G. , Van Waerbeke Ludovic , Aghanim Nabila , Ma Yin-Zhe , Mead Alexander , Tröster Tilman , Hojjati Alireza , Moraes Bruno
Published: January 2022

Relativistic jets from AGN have a wide range of impacts on galaxy groups and clusters and are key for understanding their formation and physical properties. However, this non-gravitational process is not well understood. Galaxy groups with shallow gravitational potentials are ideal laboratories to study and constrain the AGN feedback model. We studied hot gas in ∼66,000 SDSS LRG halos with an average halo mass of 3×1013 M⊙ using the Planck tSZ map. We have detected their average tSZ radial profile at ∼17σ and compared it with the cosmo-OWLS cosmological hydrodynamical simulations with different AGN feedback models. The best agreement has been obtained for the AGN 8.0 model in the simulations. We have also compared our measured tSZ profile with the prediction from the universal pressure profile assuming the self-similar relation and found them consistent if the model accounts for the clustering of neighboring haloes via a two-halo term.
Approaching Combined Rectal and Vaginal Prolapse
Authors: Wallace Shannon , Gurland Brooke
Published: January 2022

Combined rectal prolapse and pelvic organ prolapse surgery provides significant quality-of-life benefits with improvements in bothersome symptoms of pain, bulge, constipation, urinary retention, as well as bowel and bladder incontinence. Robotic surgery is the ideal tool for a combined surgical repair. It allows enhanced suturing in the deep pelvis, three-dimensional (3D) visualization of the presacral space and easy mobilization of the rectum and dissection of the vagina. Combined procedures can be offered to patients with the advantages of a single operation and concurrent recovery period without increasing complications. In this article, we highlight our approach to combined prolapse repair.
The Essential Role of a Multidisciplinary Approach in Inflammatory Bowel Diseases: Combined Medical-Surgical Treatment in Complex Perianal Fistulas in CD
Authors: Geldof Jeroen , Iqbal Nusrat , Warusavitarne Janindra , Hart Ailsa
Published: January 2022

Perianal fistulizing Crohn's disease (PFCD) represents a challenging and complex disease phenotype. Patients typically suffer a more severe disease course than those without perianal complications and are often managing debilitating symptoms. Etiology is understood to be multifactorial, with genetic predisposition, microbiological insult, aberrant immunity, and mechanical factors all implicated. As a result, multimodal treatment strategies must be employed to achieve disease control and fistula closure. This requires the complimentary involvement of medical and surgical disciplines in order to ensure thorough assessment and treatment tailored to the individual scenario and patient goals. The aim of this article is to describe an overview of the various treatment strategies available for PFCD, focusing on how a synergistic approach is required to ensure maximal chances of success.
Severe Contrast-Induced Nephropathy Leading to Dialysis Occurring in a Patient with Near-Normal Baseline Creatinine Undergoing CT Angiography Using Intravenous Contrast Only
Authors: Movahed Mohammad Reza
Published: January 2022

Contrast-induced nephropathy can be a major health issue in patients undergoing iodinated contrast exposure. Recently a published paper misleadingly suggested that intravenous administration of iodinated contrast is not a significant cause of contrast-induced nephropathy. This contrasts with previous studies and clinical observations of numerous contrast-induced nephropathy cases occurring in the setting of intravenous contrast exposure. A severe cause of contrast-induced nephropathy is presented occurring in a patient with near-normal creatinine receiving intravenous contrast only leading to dialysis and near death.