bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on the key features of dynamic compressive fracture strain of Ti-Zr-Nb solid solution alloys through random forest regressor
Authors: Fan Bojian , Liu Xingwei , Si Shengping , Liu Shuang , Xie Ruyue , Liu Jinxu 
Published: October 2022

Abstract
In some specific application fields, dynamic fracture strain regarding as evaluating dynamic properties of Ti-Zr-Nb solid solution alloy have attracted extensive attention. However, the main influence factors of the dynamic strain of alloys were unclear. For the purpose of regulating Ti-Zr-Nb alloys’ dynamic plasticity and clarify main influence factors of the dynamic plasticity of the materials, powder metallurgy, dynamic properties test combined with machine learning were performed. 56 Ti-Zr-Nb alloys were prepared through powder metallurgy and their dynamic compressive fracture strain was tested. Furthermore, optimization of machine learning model and selection of key features for the prediction of dynamic compressive fracture strain were carried out. The prediction accuracy of optimized model was more than 80%, and three key features that significantly influence the dynamic fracture strain were selected and ordered as: VEC>λ>ΔG.
Microstructures of Al coatings prepared through magnetron co-sputtering with microcrystalline Ti doping
Authors: Zhang Maocai , Cui Hongbing , Wang Yu , Na Shihang , Bai Linrui , Xin Bo 
Published: October 2022

Abstract
Sintered NdFeB magnets are being utilised in numerous applications because of the excellent magnetic properties. However, due to its main components are Fe, B and rare earth metals. There is a potential difference between the neodymium rich phase, boron rich phase and the main phase, which was very easy to form a primary battery and cause electrochemical corrosion on the surface of the material. After the materials are easy to be corroded or the components and structures change, the performance of the materials will become weak or even lost, which will affect the service performance and life of the devices or equipment. According to the requirements of surface protection technology for NdFeB magnets, the preparation of protective coating by magnetron sputtering was an efficient means to enhance the corrosion resistance of magnets. Pure Al coating was deficient in microstructure, hardness and corrosion resistance, and the preparation of composite coating by doping co-sputtering had become a development trend. In the current work, AlTi coatings with various Ti contents were prepared from an Al target and a Ti target using direct and radio frequency hybrid magnetron co-sputtering. The surface morphology, microstructure, and elemental compositions of the AlTi coatings were explored through XRD (X-ray diffraction), SEM (scanning electron microscopy), and EDS (energy dispersive spectroscopy). The anticorrosion performances of the AlTi coatings were evaluated by performing electrochemical tests. According to SEM and EDS, the AlTi composite coating was denser and more homogeneous than that of the Al single layer. Furthermore, the results demonstrated that microcrystalline Ti doping reduced the grain size of Al coatings. Therefore, the corrosion current density of the sintered NdFeB magnets plated with Al(120w)/Ti(10w) was approximately more than a hundred times inferior to that of the pure Al layer, and the hardness of AlTi composite coatings also improved.
Effect of pitch on mechanical properties of braided wire rope under winding and traction condition
Authors: Cui Weihua , Song Bao , Fu Chao , Wang Hui 
Published: October 2022

Abstract
In the tension stringing construction process of power transmission and transformation engineering, the braided wire ropes (BWRs) are in the state of winding and stretching when passing through the friction drum. Pitch is an important structural parameter of BWRs, which directly influences the mechanical behaviors under these conditions. Based on the YS9-8×19 wire rope, this project studies the effect of the rope strand pitch on the curvature and winding from both qualitative and quantitative aspects. Qualitative analysis initially explores the effect of the pitch on the mechanical behaviors. Based on the established “rope-wheel” solid model and numerical simulation model, the stress distribution and the variation trend of the maximum equivalent stress corresponding to different pitches in the winding traction state are obtained through the quantitative analyses of the numerical simulations under the same loads with different pitches. The reasonable pitch range of the BWR subjected to traction and bending load is further concluded, to provide the data reference for the manufacture of related wire ropes.
Simulation research on the pre-strike characteristics of SF6 circuit breaker
Authors: Zhou Xiong , Pang Jianyou , Qian Shuaiwei , Pan Ningbo , Chen Jianxi , Huang Yongqiang , Jiang Wei 
Published: October 2022

Abstract
The pre-strike duration of SF6 circuit breaker closing is one of the indicators to measure the ablative state of contacts, obtaining the pre-strike characteristics of SF6 circuit breaker closing is very important to evaluate the electrical life state of circuit breakers. In this paper, the simulation model of the electrical and fluid coupling simulation of the 110kv SF6 circuit breaker is established, and the pre-strike characteristics of the closing process are studied. The results show that the maximum point of the synchronous midfield is always on the surface of the static arc contact. The density of SF6 on the arc-extinguishing chamber is almost constant; the pressure output of the pressure chamber has little effect on the pre-strike voltage curve. Under the phase voltage of 110kv voltage, the duration of the circuit breaker pre-strike duration is 0.9054ms, which is close to the measured value. Results can provide the basis for the actual life circuit life evaluation.
Additive manufacturing of fine-granularity optically-isolated plastic scintillator elements
Authors: Berns S. , Boillat E. , Boyarintsev A. , De Roeck A. , Dolan S. , Gendotti A. , Grynyov B. , Hugon S. , Kose U. , Kovalchuk S. , Li B. , Rubbia A. , Sibilieva T. , Sgalaberna D. , Weber T. , Wuthrich J. , Zhao X.Y. 
Published: October 2022

Abstract
Plastic scintillator detectors are used in high energy
physics as well as for diagnostic imaging in medicine, beam
monitoring on hadron therapy, muon tomography, dosimetry and many
security applications. To combine particle tracking and calorimetry
it is necessary to build detectors with three-dimensional
granularity, i.e. small voxels of scintillator optically isolated
from each other. Recently, the 3DET collaboration demonstrated the
possibility to 3D print polystyrene-based scintillators with a light
output performance close to that obtained with standard production
methods. In this article, after providing a further
characterization of the developed scintillators, we show the first
matrix of plastic scintillator cubes optically separated by a white
reflector material entirely 3D printed with fused deposition
modeling. This is a major milestone towards the 3D printing of the
first real particle detector. A discussion of the results as well
as the next steps in the R&D is also provided.
CONCERTO: readout and control electronics
Authors: Bourrion O. , Hoarau C. , Bounmy J. , Tourres D. , Vescovi C. , Bouly J.-L. , Ponchant N. , Beelen A. , Calvo M. , Catalano A. , Goupy J. , Lagache G. , Macías-Pérez J.-F. , Marpaud J. , Monfardini A. 
Published: October 2022

Abstract
The CONCERTO spectral-imaging instrument was installed at
the Atacama Pathfinder EXperiment (APEX) 12-meter telescope in April
2021. It has been designed to look at radiation emitted by ionised
carbon atoms, [CII], and use the “intensity Mapping” technique to
set the first constraints on the power spectrum of dusty
star-forming galaxies. The instrument features two arrays of 2152
pixels constituted of Lumped Element Kinetic Inductance Detectors
(LEKID) operated at cryogenic temperatures, cold optics and a fast
Fourier Transform Spectrometer (FTS). To readout and operate the
instrument, a newly designed electronic system hosted in five
microTCA crates and composed of twelve readout boards and two
control boards was designed and commissioned. The architecture and
the performances are presented in this paper.
Study of 20-inch PMTs dark count generated large pulses
Authors: Zhang Yu , Wang Zhimin , Li Min , Zhang Yongpeng , Wang Yaoguang , Peng Zhaoyuan , Yang Changgen , Heng Yuekun 
Published: October 2022

Abstract
The main goal of the JUNO experiment is to determine the
neutrino mass ordering with a 20 kt liquid-scintillator
detector. The 20-inch PMT is crucial as one of JUNO key instruments
to realize an excellent energy resolution of at least 3% at
1 MeV. The knowledge on PMT's characterisation and feature is
critical for detector performance understanding. Large pulses from
PMT dark count such as from the flasher or others are one of the
serious concerns for detector noise control. Focusing on the large
pulses from 20-inch PMT dark count, this paper is trying to
investigate the causes by measurements with a muon tagging
system. It is found that the large pules of 20-inch PMT dark count
is contributed mainly from muons hitting the PMT glass, and we have
a preliminary understanding of the results with a simulation based
on Geant4.
Lessons from a regional analysis of forest recovery trajectories in West Africa
Authors: Amani Bienvenu H K , N’Guessan Anny Estelle , Van der Meersch Victor , Derroire Géraldine , Piponiot Camille , Elogne Aka G M , Traoré Karidia , N’Dja Justin K , Hérault Bruno 
Published: October 2022

Abstract
In West Africa, very poorly documented are the recovery trajectories of secondary forests, and even less is known about the origin of the observed variability in recovery rates. To understand the relative importance of local and regional environmental conditions on these trajectories, we inventoried all trees larger than 2.5 cm DBH on 236 plots (0.2 ha), aged from 0 to 45 years plus controls, on eight chronosequences representing the typical regional North-South climatic gradient of West Africa. In a hierarchical Bayesian framework, we modelled recovery trajectories of biodiversity, aboveground biomass and floristic composition and tested the influence of variability in local (plot history, landscape context, remnant trees) and regional (climate and soil) conditions on recovery rates. Our results show that (a) diversity recovers faster than composition and biomass, (b) among the local variables, the number of remnant trees has a positive impact on recovery rates while the duration of agricultural cultivation has a negative impact, and (c) among the regional variables, the high seasonality of precipitation and climate, typical of the dry forests of the northern West African forest zone, leads to faster secondary successions. Our simulation approaches have indicated that poor regional conditions can be counterbalanced by adequate local conditions and vice versa, which argues strongly in favour of a diagnosis that integrates these two aspects in the choice of more or less active technical itineraries for forest restoration.
Overgroups of subsystem subgroups in exceptional groups: nonideal levels
Authors: Gvozdevsky P. 
Published: October 2022

In the present paper, a description of overgroups for the subsystem subgroups

E
(
Δ
,
R
)

E(\Delta ,R)

of the Chevalley groups

G
(
Φ
,
R
)

G(\Phi ,R)

over the ring

R
R

, where

Φ
\Phi

is a simply laced root system and

Δ
\Delta

is its sufficiently large subsystem, is almost entirely finished. Namely, objects called levels are defined and it is shown that for any such overgroup

H
H

there exists a unique level

σ
\sigma

with

E
(
σ
)
≤
H
≤

Stab

G
(
Φ
,
R
)

⁡
(

L

max

(
σ
)
)

E(\sigma )\le H\le \operatorname {Stab}_{G(\Phi ,R)}(L_{\max }(\sigma ))

, where

E
(
σ
)

E(\sigma )

is an elementary subgroup associated with the level

σ
\sigma

and

L

max

(
σ
)

L_{\max }(\sigma )

is the corresponding subalgebra of the Chevalley algebra. Unlike the previous papers, here levels can be more complicated than nets of ideals.
Isomonodromic quantization of the second Painlevé equation by means of conservative Hamiltonian systems with two degrees of freedom
Authors: Suleimanov B. 
Published: October 2022

For the three nonstationary Schrödinger equations

i
ℏ

Ψ

τ

=
H
(
x
,
y
,
−
i
ℏ

∂

∂
x

,
−
i
ℏ

∂

∂
y

)
Ψ
,

\begin{equation*} i\hbar \Psi _{\tau }=H(x,y,-i\hbar \frac {\partial }{\partial x},-i\hbar \frac {\partial }{\partial y})\Psi , \end{equation*}

solutions are constructed that correspond to conservative Hamiltonian systems with two degrees of freedom whose general solutions can be represented by those of the second Painlevé equation. These solutions of the Schrödinger equations are expressed via fundamental solutions of systems of linear equations arising in the isomonodromic deformations method, the compatibility condition of which is the second Painlevé equation. The constructed solutions of two nonstationary Schrödinger equations are globally smooth. Some of the smooth solutions in question of one of these two equations exponentially tend to zero as

x
2

+

y
2

→
∞

x^2+y^2\to \infty

if the corresponding solutions of linear systems that are used in the method of isomonodromic deformations are compatible on the so-called 1-tronquée solutions of the second Painlevé equation.
Boundary quasi-analyticity and a Phragmén–Lindelöf type theorem in classes of functions of bounded type in tubular domains
Authors: Shamoyan F. 
Published: October 2022

A complete description is obtained of the Carleman classes on

R

n

\mathbb {R}^n

such that every function of bounded type in

C

+
n

\mathbb {C}^n_+

whose boundary values belong to the class under study is in fact a member of the corresponding Carleman class in

C

+
n

∪

R

n

\mathbb {C}^n_+\cup \mathbb {R}^n

. Also a refinement of the classical Salinas theorem is obtained, namely: under the conditions of the Salinas theorem on quasi-analyticity, instead of the assumption that a function belongs to the Carleman class in

C

+
n

∪

R

n

\mathbb {C}^n_+\cup \mathbb {R}^n

it suffices that its boundary values on

R

n

\mathbb {R}^n

belong to the Carleman class, and the function is of bounded type in

C

+
n

\mathbb {C}^n_+

.
Pituitary Volumes Are Reduced in Patients With Alcohol Use Disorder
Authors: Gurok Mehmet Gurkan , Tabara Muhammed Fatih , Koc Mustafa , Saritoy Sumeyra , Baykara Sema , Atmaca Murad 
Published: October 2022

Abstract

Aims
To determine whether there is a difference in pituitary gland volumes in patients with alcohol use disorder compared to healthy people.

Methods
The subjects included in the study consisted of 15 individuals who met the criteria for alcohol use disorder according to the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition (DSM 5) diagnostic criteria based on the Structured Clinical Interview for DSM 5 and were admitted to Firat University School of Medicine, Department of Psychiatry, or were hospitalized, and 17 healthy controls. The volumes of pituitary were measured in subjects.

Results
Absolute pituitary gland volumes of patients with alcohol use disorder and healthy controls were compared in the analysis performed using the independent samples t-test. The mean volume of the patient group was significantly smaller than the healthy controls (58.02 ± 7.24 mm3 in patients with alcohol use disorder vs. 83.08 ± 12.11 mm3, P &lt; 0.01), a difference which persisted after controlling for age, gender and total brain size.

Conclusions
Patients with alcohol use disorder in this study had smaller pituitary gland volumes compared to those of healthy control subjects. However, this study has limitations including small sample size and not adjusting for previous or current medication use or current anxiety and depression.
874 Impact of Covid-19 Measures on Surgical Site Infection Rate in Orthopaedic Patients
Authors: Richardson G , Joumah A , Al-Ashqar M , Bakhshayesh P , Kanakaris N 
Published: October 2022

Abstract

Aim
Rate of surgical site infections (SSI) in orthopaedic surgery is low but can have disastrous consequences. The aim of this study was to assess the impact of Covid-19 measures on the rate of SSI and subsequent readmissions in orthopaedic patients.

Method
Retrospective, observational study comparing rates of SSI in orthopaedic patients who underwent surgery prior to the Covid-19 lockdown versus that of patients who underwent surgery during the lockdown period. A total of 1151 patients were identified using electronic clinical records over two different time periods: 3 months pre Covid-19 lockdown (n=680) and 3 months during the Covid-19 lockdown (n=470). Patients were followed up for 1 year following their initial procedure. Primary outcome was readmission for SSI.

Results
The most commonly performed procedures were arthroplasty and manipulation under anaesthesia with 119 in lockdown vs 101 non-lockdown (p=0.001). The readmission rate was higher in the lockdown group with 61 (13%) vs 44 (6.5%) in the non-lockdown group (p &lt;0.001). However, the majority were due to other surgical complications such as dislocations. Interestingly, the SSI rates were very similar with 24 (5%) in lockdown vs 28 (4%) in non-lockdown (p=0.472). Twenty patients (4.2%) required a secondary procedure for their SSI in the lockdown group vs 24 (3.5%) in non-lockdown (p=0.381). Mortality rate was similar at 44 (9.3%) in lockdown vs 61 (9.0%; p=0.836).

Conclusion
Whilst Covid-19 precautions were associated with higher readmission rates, there was no significant difference in rate of SSI between the two groups.
Correcting cardiorespiratory noise in resting-state functional MRI data acquired in critically ill patients
Authors: Chan Suk-Tak , Sanders William R , Fischer David , Kirsch John E , Napadow Vitaly , Bodien Yelena G , Edlow Brian L 
Published: October 2022

Abstract
Resting-state functional MRI is being used to develop diagnostic, prognostic and therapeutic biomarkers for critically ill patients with severe brain injuries. In studies of healthy volunteers and non-critically ill patients, prospective cardiorespiratory data are routinely collected to remove non-neuronal fluctuations in the resting-state functional MRI signal during analysis. However, the feasibility and utility of collecting cardiorespiratory data in critically ill patients on a clinical MRI scanner are unknown. We concurrently acquired resting-state functional MRI (repetition time = 1250 ms) and cardiac and respiratory data in 23 critically ill patients with acute severe traumatic brain injury and in 12 healthy control subjects. We compared the functional connectivity results from two approaches that are commonly used to correct cardiorespiratory noise: (i) denoising with cardiorespiratory data (i.e. image-based method for retrospective correction of physiological motion effects in functional MRI) and (ii) standard bandpass filtering. Resting-state functional MRI data in 7 patients could not be analysed due to imaging artefacts. In 6 of the remaining 16 patients (37.5%), cardiorespiratory data were either incomplete or corrupted. In patients (n = 10) and control subjects (n = 10), the functional connectivity results corrected with the image-based method for retrospective correction of physiological motion effects in functional MRI did not significantly differ from those corrected with bandpass filtering of 0.008–0.125 Hz. Collectively, these findings suggest that, in critically ill patients with severe traumatic brain injury, there is limited feasibility and utility to denoising the resting-state functional MRI signal with prospectively acquired cardiorespiratory data.
A comparative post hoc analysis of finerenone and spironolactone in resistant hypertension in moderate-to-advanced chronic kidney disease
Authors: Agarwal Rajiv , Pitt Bertram , Palmer Biff F , Kovesdy Csaba P , Burgess Ellen , Filippatos Gerasimos , Małyszko Jolanta , Ruilope Luis M , Rossignol Patrick , Rossing Peter , Pecoits-Filho Roberto , Anker Stefan D , Joseph Amer , Lawatscheck Robert , Wilson Daniel , Gebel Martin , Bakris George L 
Published: October 2022

ABSTRACT

Background
Mineralocorticoid receptor antagonists (MRAs) reduce systolic blood pressure (SBP) and increase serum potassium concentration ([K+]). This indirect comparison investigated any differences in SBP-lowering and hyperkalemia risk between finerenone, a nonsteroidal MRA, and the steroidal MRA spironolactone ± a potassium binder.

Methods
In FIDELITY (a pooled analysis of FIDELIO-DKD and FIGARO-DKD), a subgroup of patients with treatment-resistant hypertension (TRH) and chronic kidney disease meeting eligibility criteria of the AMBER trial were identified (FIDELITY-TRH). The main outcomes were mean change in SBP, incidence of serum [K+] ≥5.5 mmol/L and hyperkalemia-associated treatment discontinuation. Results at ∼17 weeks were compared with 12 weeks from AMBER.

Results
In 624 FIDELITY-TRH patients and 295 AMBER patients, the least squares mean change in SBP (mmHg) from baseline was −7.1 for finerenone and −1.3 for placebo {between-group difference −5.74 [95% confidence interval (CI) −7.99 to −3.49], P &lt; .0001} versus −11.7 for spironolactone + patiromer and −10.8 for spironolactone + placebo [between-group difference −1.0 (95% CI −4.4–2.4), P = .58]. The incidence of serum [K+] ≥5.5 mmol/L was 12% for finerenone and 3% for placebo versus 35% with spironolactone + patiromer and 64% with spironolactone + placebo. Treatment discontinuation due to hyperkalemia was 0.3% for finerenone and 0% for placebo versus 7% for spironolactone + patiromer and 23% for spironolactone + placebo.

Conclusions
In patients with TRH and chronic kidney disease compared with spironolactone with or without patiromer, finerenone was associated with a lower SBP reduction and lower risk of hyperkalemia and treatment discontinuation.
Trial Registration: AMBER (NCT03071263), FIDELIO-DKD (NCT02540993), FIGARO-DKD (NCT02545049)
Management of anaemia in French dialysis patients: results from a large epidemiological retrospective study
Authors: Zaoui Philippe , Courivaud Cecile , Rostoker Guy , Choukroun Gabriel , Dubel Laurence , Lorenzo Maria , Harmand Sarah , Menoyo Calonge Victorio 
Published: October 2022

ABSTRACTBackgroundLimited real-world data are available in Europe, especially France, regarding the therapeutic management of anaemia in patients with dialysis-dependent chronic kidney disease (DD CKD).MethodsThis retrospective, longitudinal, observational study was based on medical records from the MEDIAL database of not-for-profit dialysis units in France. From January to December 2016, we included eligible patients (≥18 years), with a diagnosis of CKD and receiving maintenance dialysis. Patients with anaemia were followed up for 2 years after inclusion. Patient demographic data, anaemia status, CKD-related anaemia treatments, and treatment outcomes including laboratory test results were evaluated.ResultsOf 1632 DD CKD patients identified from the MEDIAL database, 1286 had anaemia; 98.2% of patients with anaemia were receiving haemodialysis at index date (ID). Of patients with anaemia, 29.9% had haemoglobin (Hb) levels of 10–11 g/dL and 36.2% had levels of 11–12 g/dL at ID. Furthermore, 21.3% had functional iron deficiency and 11.7% had absolute iron deficiency. The most commonly prescribed treatments at ID for patients with DD CKD–related anaemia were intravenous (IV) iron with erythropoietin-stimulating agents (ESAs) (65.1%). Among patients initiating ESA treatment at ID or during follow-up, 347 (95.3%) reached the Hb target of 10–13 g/dL and maintained response within the target Hb range for a median duration of 113 days.ConclusionsDespite combined use of ESAs and IV iron, duration within the Hb target range was short, suggesting that anaemia management can be further improved.