bluuebunny/crossref_metadata_2025_split huggingface dataset:
Separatrix parameters and core performances across the WEST L-mode database
Authors: Bourdelle C. , Morales J. , Artaud J.F. , Grover O. , Radenac T. , Bucalossi J. , Camenen Y. , Ciraolo G. , Clairet F. , Dumont R. , Fedorczak N. , Gaspar J. , Gil C. , Goniche M. , Guillemaut C. , Gunn J. , Maget P. , Manas P. , Ostuni V. , Pégourié B. , Peysson Y. , Tamain P. , Vermare L. , Vézinet D. 
Published: February 2023

Abstract
WEST database analysis shows a correlation of the recycled neutral source around the separatrix with core performances. This observation questions the causality chain between particle source and turbulent transport up to the core in L-mode, high recycling plasmas, an unavoidable phase of all scenarios. The best core performances correlate with the lowest values of the density at the separatrix,

n

sep

, similarly to ASDEX Upgrade (AUG) tokamak and Joint European Torus (JET) tokamak in H-mode (Verdoolaege et al 2021 Nucl. Fusion
61 076006). Reflectometry in the midplane provides

n

sep

, while the temperature at the separatrix,

T

sep

is inferred by the ‘two-point model’ using Langmuir probe data on divertor targets. Lower separatrix resistivity does not correlate with better core performances, unlike H-mode observations (Eich et al 2020 Nucl. Fusion
60 056016). As expected in the presence of an efficient neutral source due to recycling fluxes,

n

sep

correlates with the D recycled particle flux at the divertor measured by visible spectroscopy. Coherently, at a given controlled central line integrated density

n
ˉ

, lower

n

sep

correlates with a larger density gradient around the separatrix as well as a larger global density peaking,

n
ˉ

/

⟨
n
⟩

, measured by interferometry. The latter correlates as well with lower collisionality in the core, similarly to JET and AUG H-modes (Angioni et al 2007 Nucl. Fusion
47 1326). The correlations reported allow phrasing the subsequent causality question: what is the interplay chain between low neutral recycling at the divertor plates, low density at the separatrix, high density peaking at the separatrix, high global density peaking, higher central temperature and better core energy confinement quality? Understanding the causality chain is essential to prepare ITER operation and design DEMO scenarios where the ratio of the divertor leg to the ionization length will be larger and where the pumped flux with respect to the plasma volume will be lower than presently operating tokamaks.
Identification of an impulse response through a model of ARX structure
Authors: Maillet Denis , Zacharie Célien , Rémy Benjamin 
Published: February 2023

Abstract
Polynomial parametric models of ARX structure are becoming increasingly popular for characterizing heat transfer for linear thermal systems with time invariant coefficients. This stems from their robustness when applied to inverse problems, either for model reduction, for experimental model identification or for inverse input problems. Their parsimonious character allows to get residuals of very low levels with a limited number of coefficients. This paper shows, on a theoretical algebraic basis, that ARX models can be deduced from convolutive models.
Estimation of the local instantaneous heat flux inside a pulsating heat pipe for space applications
Authors: Cattani L , Pagliarini L , Bozzoli F , Mameli M , Filippeschi S , Marengo M , Pietrasanta L , Miché N , Mangini D 
Published: February 2023

Abstract
Pulsating Heat Pipes (PHP) are promising and effective passive two-phase heat transfer devices in terms of high heat transfer capability, efficient thermal control, adaptability and low cost and therefore they have been extensively studied in the last years. Many authors have estimated the heat fluxes at the evaporator and at the condenser area only in terms of the average values based on first principle considerations. In the present study the application of an inverse analysis technique to experimental infrared temperature data is proposed to investigate the local convective heat flux for forced convection flow inside these devices along the adiabatic zone. A PHP specifically designed to be hosted on board the heat transfer host of the International Space Station was tested in microgravity during the 67th Parabolic Flight Campaign organized by the European Space Agency. The device consists of an aluminium tube closed in a loop with 14 turns in the evaporator section, 3 mm inner diameter, half filled with FC-72 fluid. The external temperatures of the device are measured in the adiabatic zone with a high-speed infrared camera (50 Hz, 1280x1024 pixels). The images are thereafter post-processed and adopted as input data for the solution of the inverse heat conduction problem in the pipe wall (Tikhonov regularisation method) to extrapolate time-varying local heat fluxes on the tube internal surface in contact with the fluid.
The Search for a Generalized Analytical Solution for the Inverse Problem; Some Surprisingly Simple Approximate Methods for Problems of Practical Importance
Authors: Segall A.E 
Published: February 2023

Abstract
Advances in numerical algorithms for Inverse problems has led to significant leaps in our ability to model complex situations of importance. Nonetheless, there is still a strong need for analytical approaches that can be used to calibrate/validate numerical simulations since the old adage of Trust, but Verify is sound advice. Moreover, access to Inverse codes is often limited despite a strong need. Fortunately, generalized Inverse formulations capable of good approximations can be obtained for linear problems by using a known Direct solution. Duhamel’s Integral (convolution) and a systems Unit Response are first employed to derive a Direct solution, with generality maintained via an arbitrary function with coefficients such as polynomials to described the time-dependent boundary condition. For the ensuing Inverse problem, the Direct solution in the form of a more complex polynomial with its coefficients now considered unknown are then used to enforce remotely measured data using the Levenberg–Marquardt algorithm. Once the coefficients are determined, the original function (polynomial or alternative) now describes the unknown boundary condition. Intriguingly, an approximate Inverse Laplace Transform method applied to the Convolution Integral allows for relatively simple formulations for both the Direct and Inverse problems; for this approximation, only the remotely measured data along with the Unit Response as the solitary system information are required. However, the predicted boundary temperature history tends to be shifted forward in time indicating the influence of the thermal thickness and will also reflect any errors in the data. Accuracy can be enhanced by correcting (back-shifting) for the penetration time to the measurement depth and/or using least-squares smoothing. When the various generalized solutions were used for a plate and a thick-cylinder with a time-dependent thermal boundary-condition on one surface and convection on the other, good-to-excellent Inverse predictions were observed; the methods can be adapted so that remotely measured and near instantaneous surface-strains can also be used to determine an unknown surface temperature history. Finally, the convolution-based approach can easily be adapted for 1-degree of freedom vibration problems.
Measuring thermal diffusivity when the principal axes are unknown a priori
Authors: Davis SE , Wright NT 
Published: February 2023

Abstract
The thermal diffusivity of polymers may develop anisotropy due material possessing or mechanical loading. The orientation of the anisotropy may not be visually apparent. An analytical study has been performed where the four non-zero components of the diffusivity tensor are estimated for a specimen with in-plane anisotropy. Sensitivity coefficients were calculated for each of the non-zero components of the diffusivity tensor at the four measurement locations. The amplitude of the sensitivity coefficients suggest that the signal received at each sensor is sufficient for estimating the parameters, while the character of the coefficients over time suggests that the parameters are independent. Small values of in-plane anisotropy lead to negligible errors (< 0.4%) in the estimated parameters when the off-diagonal diffusivity is neglected. Larger differences in anisotropy require the estimation of the off-axis terms, which is possible with the addition of a fourth sensor to the extended flash diffusivity method. This additional measurement may be used to verify assumptions of thermally orthotropic behavior in materials.
Study on the Effect of Pressurized Air Supply Outlet Setting on the Effect of Anteroom Smoke Control
Authors: Liu Donghua , Zhuang Yuehan , Dou Pengliang , Liu Qianyi , Zhou Chuanhui 
Published: February 2023

Abstract
In the selection of smoke control system, the Technical standard for smoke management systems in buildings (GB51251-2017), Article 3.1.1, paragraph 2, makes strict requirements for the setting of mechanical pressurized air supply outlets in anterooms, in order to study the influence of different setting methods of supply outlets on the smoke control effect of anterooms, the wind speed of the anteroom doorway section and the smoke flow in the anteroom are researched for different settings of the location of outlet and air supply angle with the help of Pyrosim. The results show that the effect of anteroom smoke control is not only related to the wind speed of the doorway section, but also related to the air velocity distribution at each point of the doorway section; at the same time, the air supply angle also has some influence on it.
Numerical Study on Smoke Diffusion and Smoke Control in Urban Underground Curved Tunnel
Authors: Qi Zhao , Li Junmei , Xie Fei , Liu Wenbo 
Published: February 2023

Abstract
Effects of the radius and fire heat release rate on the smoke propagation and smoke control in curved tunnel are studied by the numerical methods. Six radiuses as 70 m, 150 m, 200 m, 250 m, 300 m and 400 m and two different fire sizes as 5 MW and 30 MW are involved. Numerical results show that comparing with the smoke flow in the straight tunnel, smoke temperature distributions across the cross-section is not symmetry with the centerline in the curved tunnel, and the smoke diffusion close to the outside boundary appears to be fast. At the higher level of the curved tunnel, such as 3 m above the tunnel floor, the smoke temperature would decrease with the distance from the fire increasing. However, at the lower level of the tunnel, the temperature would increase firstly and then decrease, maximum temperature would occur in the bend region of the curved tunnel. When the fire heat release rate is big, this temperature might be high enough to injure the people. Smoke ventilation system would run in time under this condition. Critical velocity in curved tunnel is larger than that in the straight tunnel.
Analysis on Mechanical Characteristics of Substation Wall under Flood
Authors: Yao Han , Wang Qing , Han Huina , Liu Kaiyue , Han Fengkai , Tian Li 
Published: February 2023

AbstractThe safety and stable operation of substation facilities during a flood depends on the dependability of substation flood walls. The finite-element (FE) model of the prefabricated flood wall is established based on the actual project, and the mechanical characteristics of the wall are analyzed, along with the load transmission mechanism of the wall, in order to study the bearing capacity of the prefabricated flood wall under the flood. The critical parameter study is completed, and its impact on the wall’s force characteristics is made clear. The findings demonstrate that the load transfer mechanism of the prefabricated flood wall is clear, and that crucial joints, such as those connecting the wall panel to the column and the column to the base, are under increased stress. The performance of the wall is significantly influenced by both flood depth and flood velocity. The safety of the prefabricated flood wall is obviously decreased when the flood velocity is greater than 2 m/s or the flood depth is greater than 1.0 m.
Activation and Application of Wet Shotcrete Concrete with Coal Gasification Slag Aggregate
Authors: Kangkang Wang , Songhui Liu , Meng Xing , Bing Pan , Haibo Zhang 
Published: February 2023

Abstract
By analyzing the shortcomings of the existing dry shotcrete process in the coal mines and the shortage of natural sand and gravel resources, it is proposed to use coal gasification slag to replace all natural sand and gravel in the preparation of wet shotcrete. Coal gasification slag has alkali-activated cementitious activity, and its strength as an aggregate in cement mortars still shows significant growth after 28d of age. First of all, the gasified slag aggregate cement mortar was mixed with calcium carbide residue to further stimulate its activity, and the effect law of different amounts of calciumcarbide residue on mortar strength was studied. The results showed that the mortar strength increased continuously with the increase of calcium carbide residue admixture, and the mortar strength increased slowly after the admixture reached 8%. With 8% admixture, the flexural strength at 90d age increased by 58.9%, and compressive strength increased by 13.6% compared with 28d age. MIP, XRD and SEM microscopic analyses showed that the incorporation of CCR promoted the alkali-activated cementation reaction of the gasified slag aggregate, eliminated the oriented aggregation of calcium hydroxide at the cement-aggregate interface, improved the interfacial bonding, and significantly reduced the percentage of harmful pores (50-200 nm) and more harmful pores (>200 nm) in the mortar, which explained the microscopic mechanism of the significant increase in mortar strength. Then the mining wet shotcrete was prepared with coal gasification slag as aggregate and calcium carbide residue as cementing material, and the 28d compressive strength reached 34.8MPa, which significantly improved the concrete strength and ensured the stability of the coal mine roadway support.
Feasibility study of an enhanced heterodyne dispersion interferometer
Authors: Fiorucci D. , Fassina A. , La Matina M. 
Published: February 2023

Abstract
Interferometry is the commonly exploited technique for electron density measurements in magnetically confined fusion plasma experiments. Reliable electron density measurements are fundamental both for machine protection and for plasma physics understanding. In the last years, attention was drawn on the dispersion interferometer concept, because of its robustness and simplicity. Nevertheless, the heterodyne version of this configuration, which has several advantages over the homodyne scheme, loses one of the main benefits of the dispersion interferometer technique, that is its inherent insensitivity to vibration errors. In this paper, two methods are proposed and theoretically investigated to reduce the vibration noise in the electron density measurements performed with heterodyne dispersion interferometers.
Digital cells radiation hardness study of TPSCo 65 nm CIS technology by designing a ring oscillator
Authors: Barbero M. , Barrillon P. , Fougeron D. , Habib A. , Pangaud P. 
Published: February 2023

Abstract
The CPPM group has long been designing and testing HV-CMOS blocks to complete monolithic chips in various technologies (TJ180, LF150, AMS) in the framework of several collaborations. In 2020, we participated in the MLR1 run in TowerJazz 65 nm technology through CERN’s EP-R&D WP1.2, by designing a ring oscillator test chip. Its aim is to characterize the standard cells of this technology and evaluate their radiation hardness against TID. There were 48 ring oscillators formed of different cells with different sizes and two thresholds. In 2022, characterization, temperature, X-ray irradiation (up to more than 500 Mrad) tests and annealing took place, leading to encouraging results presented here.
Detection efficiency measurement and operational tests of the X-Arapuca for the first module of DUNE far detector
Authors: Palomares C. 
Published: February 2023

Abstract
The Deep Underground Neutrino Experiment (DUNE) is a dual-site experiment for long-baseline neutrino oscillation studies, able to resolve the neutrino mass hierarchy and measure δ
CP. DUNE will also have sensitivity to supernova neutrinos and to processes beyond the Standard Model, such as nucleon decay searches. The Far Detector (FD) will consist of four liquid argon TPC (17.5 kt total mass) with systems for the detection of charge and scintillation light produced by an ionization event. The charge detection system permits both calorimetry and position determination. In addition, the photon-detection system (PDS) enhances the detector capabilities for all DUNE physics drivers. The PDS of the first FD module consists of light collector modules placed in the inactive space between the innermost wire planes of the TPC anode. The light collectors, the so-called X-ARAPUCAS, are functionally a light trap that captures wavelength-shifted photons inside boxes with highly reflective internal surfaces where they are guided to Silicon Photo-multipliers (SiPM) by wavelength-shifting (WLS) bars. Functionality and operational tests of the X-ARAPUCAS to be installed in ProtoDUNE-SP phase II (FD DUNE prototype at the scale 1:20), as well as the measurement of their absolute detection efficiency is reported in this publication.
Changes in concurrent precipitation and temperature extremes over the Asian monsoon region: observation and projection
Authors: Xu Lianlian , Zhang Tuantuan , Yu Wei , Yang Song 
Published: February 2023

Abstract
Concurrent precipitation and temperature extremes exert amplified impacts on the ecosystems and human society; however, they have not been well documented over the Asian monsoon region with dense population and agricultures. In this study, the spatiotemporal variations of four concurrent extreme modes (cold/dry, cold/wet, warm/dry, and warm/wet) are detected based on observations and model projections. From 1961 to 2014, the ‘dry’ modes manifest large values at high latitudes, while the ‘wet’ modes occur frequently in tropical regions. Based on the linear congruency, the trends of the four modes are largely determined by extreme temperature. Furthermore, the interaction between extreme precipitation and extreme temperature (IEPET) facilitates the trends of the dry modes, and inhibits the trends of the wet modes. Three modeling datasets (CMIP6, NEX-GDDP-CMIP6, and BCSD_CMIP6) are employed to project future changes in the occurrences of four concurrent modes. The BCSD_CMIP6, generated by statistical downscaling of the CMIP6 simulations, stands out in simulating the observed features of extreme precipitation and extreme temperature over the Asian monsoon region. Extreme temperature is also identified as the main driver in the future trends of the four modes, while the IEPET is not conducive to the decreasing trend of the cold/dry mode, implying that the IEPET would change under global warming. The warm/wet mode manifests the largest change among the four compound extremes from 1995 to 2014 and two projected periods (2046–2065 and 2080–2099) relative to 1961–1980. On the annual timescale, the change magnitudes over Southeast Asia, South Asia, the Tibetan Plateau, and Eastern Central Asia are relatively larger than in the other sub-regions during historical and future periods, which are quantified as the hotspots of the warm/wet mode. On the seasonal timescale, the future hotspots will change relative to the historical period. Our findings are critical for formulating adaptation strategies to cope with the adverse effects of compound extremes.
Strain effect on the high T
c superconductor YBa2Cu3O7: an ab initio study comparing bulk and monolayer models
Authors: Yelpo Carla , Favre Sofía , Ariosa Daniel , Faccio Ricardo 
Published: February 2023

Abstract
In this work, the effect of strain on the vibrational and electronic properties of the YBa2Cu3O7 compound was studied through ab initio calculations. For this, two structural models were used: a bulk model and a surface model (a monolayer with CuO2 and BaO as the terminating layers). The phonon spectra was calculated for both structures under different levels of c axis strain. The most appreciable change occurs in the vibrational properties, and in the surface case. From the simulation of the Raman spectra, we were able to quantify the Raman shift ratio as a function of the applied strain, and analyzed its behavior in terms of the overlap population of the different bonds and the reduced mass of selected phonons. The effect of the level of deformation on the band structure and the electronic density of states is small for both structures, although more noticeable in the case of the surface model. In both cases, tendencies are observed when the fine features of the band structure are analyzed by means of the tight binding model. Due to the lower symmetry, the surface model also shows modifications of the bands related to the CuO2 planes.
Comparison of Blood Pressure Measurements from Clinical Practice and a Research Study At Kaiser Permanente Southern California
Authors: Sanders Mark A , Muntner Paul , Wei Rong , Shimbo Daichi , Schwartz Joseph E , Qian Lei , Bowling C Barrett , Cannavale Kimberly , Harrison Teresa N , Lustigova Eva , Sim John J , Reynolds Kristi 
Published: February 2023

Abstract

Background
Accurate blood pressure (BP) measurement is essential to identify and manage hypertension. Prior studies have reported a difference between BP measured in routine patient care and in research studies. We aimed to investigate the agreement between BP measured in routine care and research-grade BP in Kaiser Permanente Southern California, a large, integrated healthcare system with initiatives to standardize BP measurements during routine patient care visits.

Methods
We included adults ≥65 years old with hypertension, taking antihypertensive medication, and participating in the Ambulatory Blood Pressure in Older Adults (AMBROSIA) study in 2019–2021. Clinic BP from routine care visits was extracted from the electronic health record. Research-grade BP was obtained by trained AMBROSIA study staff via an automatic oscillometric device. The mean difference between routine care and research-grade BP, limits of agreement, and correlation were assessed.

Results
We included 309 participants (mean age 75 years; 54% female; 49% non-Hispanic white). Compared with measurements from routine care, mean research-grade systolic BP (SBP) was 0.1 mm Hg higher (95% CI: −1.5 to 1.8) and diastolic BP (DBP) was 0.4 mm Hg lower (95% CI: −1.6 to 0.7). Limits of agreement were −29 to 30 mm Hg for SBP and −21 to 20 mm Hg for DBP. The intraclass correlation coefficient was 0.42 (95% CI: 0.33 to 0.51) for SBP and 0.43 (95% CI: 0.34 to 0.52) for DBP.

Conclusions
High within-person variation and moderate correlation were present between BP measured in routine care and following a research protocol suggesting the importance of standardized measurements.
Clinical features in adults with acquired cutis laxa: a retrospective review
Authors: O’Connell Katie A , Schaefer Morgan , Atzmony Lihi , Vleugels Ruth Ann , Choate Keith , LaChance Avery H , Min Michelle S 
Published: February 2023

Acquired cutis laxa (ACL) is a very rare dermatological condition with numerous proposed aetiologies. Herein, we report on 10 adult patients with ACL, three of which were found to have genetic mutations suggesting a genetic predisposition for the development of ACL following exposure to an environmental insult. Four patients were presumed to develop ACL in association with medication exposure. Overall, if a case of potential ACL arises, providers should carefully review patient history and comorbidities, perform thorough systemic investigations based on symptomatology, and consider genetic analysis.