bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ambulatory Care Management in Low Blood Pressure Patient with HFrEF
Authors: Panjaitan Fajar H. , Hasanah Dian Yaniarti , Yonas Emir , Soerarso Rarsari 
Published: February 2023

AbstractHeart failure (HF) affects an estimated 38 million people globally, with most published research estimating a prevalence of 1 to 2% of the adult population. Low blood pressure (BP) is reported in 10 to 15% of patients with HF in clinical trials, although this proportion is much more frequent in routine clinical practice. Low BP in outpatients has a better outcome compared to inpatients. Low BP is often a restricting factor in the use and uptitration of guideline-directed medical therapy (GDMT).A 57-year-old male presented himself to the HF clinic with complaints of bloating, shortness of breath, and fatigue. The patient had a history of acute coronary syndrome and cardiac arrest, but the results of coronary angiography showed nonsignificant coronary artery disease. Cardiomegaly was seen on chest X-ray. Electrocardiogram showed pathologic q wave II, III, and AvF with poor r wave progression on V1-V6. The patient was admitted due to acute decompensated HF with hypotension. After the initial decongestion patient was treated with sacubitril/valsartan, bisoprolol, and spironolactone in the outpatient clinic. Patient complaints and BP slowly improved during the outpatient phase.Hypotension remains a challenge in implementing GDMT in HF patients. By following the steps according to algorithm and current guidelines, GDMT can be optimized in these patients.
Determination of Clinical, Electrophysiological, and Radiological Characteristics of Pediatric Autoimmune Encephalopathy
Authors: Güngör Mesut , Öztürk Merve , Deniz Adnan , Alikılıç Defne , Karaca Ömer , Anık Yonca , Kara Bülent 
Published: February 2023

AbstractAutoimmune encephalopathy (AE) is a group of diseases with subacute onset, that represents a wide clinical spectrum, manifested by complex neuropsychiatric symptoms and signs. In this study, the data of 27 patients diagnosed and followed up in our clinic with the diagnosis of AE between 2011 and 2021 were evaluated retrospectively. Out of 27 patients, 6 were definite seropositive AE, 2 of them met the diagnostic criteria for limbic encephalitis, and the remaining 19 were probable AE. Nowadays, we see AEs with increasing frequency. While there is a generally established approach in the diagnosis and treatment of seropositive patients, there are still hesitations and diagnostic difficulties in seronegative AEs. In this study, clinical, radiological, and prognostic features of definite and probable AE patients diagnosed in a tertiary pediatric neurology clinic were documented. It is thought that pediatric neurologists have an important responsibility to increase awareness about AE in pediatricians. In the future, it is predicted that AE will be diagnosed more frequently with new antibodies and one has to differentiate it from viral encephalitis and neuropsychiatric syndromes and diseases.
The microwave absorption properties of soft magnetic materials in frequency up to 40 GHz
Authors: Wang Yuankang , Zhang Pengyu , Liu Zhou , Li Kewei , Xian Cong , Yang Wenyun , Luo Zhaochu , Liu Shunquan , Han Jingzhi , Du Honglin , Wang Changsheng , Yang Jinbo 
Published: February 2023

With the continuous development of communication technology, the microwave frequency used has been extended to 24∼30 GHz or even higher. Thus, for the research on microwave absorption materials, the commonly used 2∼18 GHz frequency range might no longer be enough. More studies of microwave absorption properties in a higher frequency band are necessary. In this work, we report the microwave absorption properties of several soft magnetic composites in frequency up to 40 GHz. Magnetic materials such as iron, Y2Fe16Si, Ce2Fe17N3−δ, and La2Fe4Co10B micron powders which display excellent microwave absorption properties in 2∼18 GHz, are investigated. Within 2∼40 GHz, the reflection loss (RL) of iron/paraffin, Y2Fe16Si/paraffin, Ce2Fe17N3−δ/paraffin and La2Fe4Co10B/paraffin composites could reach −46.2 dB, −71.4 dB, −49.1 dB, and −40.1 dB, respectively. Moreover, their effective absorption bandwidth (RL &lt; −10 dB) could reach 16.9 GHz, 8.53 GHz, 10.08 GHz, and 8.03 GHz, respectively. Though the measurements are extended to 40 GHz, the absorption properties of these composites become weak when the frequency rises to around 40 GHz, which is restricted by the cutoff frequencies of the materials. The measured data shows that these soft magnetic composites are good candidates for high-frequency microwave absorption materials, while exploring magnetic materials with further higher cutoff frequencies may result in better performance.
Layer-engineered interlayer charge transfer in WSe2/WS2 heterostructures
Authors: Bian Ang , Liu Shuangyan , Zhang Xiaoxian , Liu Zeng , He Dawei , Zhao Hui , Dai Jun 
Published: February 2023

Abstract
The layer thickness determines the electronic structure of two-dimensional (2D) materials, leading to different band alignments, which are crucial for the transition metal dichalcogenides heterostructures. Here, we investigated the heterostructure of WSe2/WS2 with different layer thicknesses by steady-state and transient absorption spectroscopy. We observed different ultrafast charge transfer behaviors in 1L-WSe2/2L-WS2 and 2L-WSe2/2L-WS2 few-layer heterostructures. We demonstrate that the layer thickness determines the sequence of intralayer exciton relaxation and interlayer charge transfer. The valley transfer of the band edge induced by the layer thickness can effectively mediate the hot carrier transfer time and interlayer exciton lifetime. These provide us a deeper understanding of carrier dynamics in 2D indirect bandgap semiconductor heterostructures.
Cooperative diffusion in body-centered cubic iron in Earth and super-Earths’ inner core conditions
Authors: Ghosh Maitrayee , Zhang Shuai , Hu Lianming , Hu S X 
Published: February 2023

Abstract
The physical chemistry of iron at the inner-core conditions is key to understanding the evolution and habitability of Earth and super-Earth planets. Based on full first-principles simulations, we report cooperative diffusion along the longitudinally fast

⟨
111
⟩

directions of body-centered cubic (bcc) iron in temperature ranges of up to 2000–4000 K below melting and pressures of ∼300–4000 GPa. The diffusion is due to the low energy barrier in the corresponding direction and is accompanied by mechanical and dynamical stability, as well as strong elastic anisotropy of bcc iron. These findings provide a possible explanation for seismological signatures of the Earth’s inner core, particularly the positive correlation between P wave velocity and attenuation. The diffusion can also change the detailed mechanism of core convection by increasing the diffusivity and electrical conductivity and lowering the viscosity. The results need to be considered in future geophysical and planetary models and should motivate future studies of materials under extreme conditions.
Hybrid mixed-dimensional WTe2/CsPbI3 perovskite heterojunction for high-performance photodetectors
Authors: Song Xiufeng , Jian Yuxuan , Wang Xusheng , Chen Jiawei , Shan Qingsong , Zhang Shengli , Chen Zhanyang , Chen Xiang , Zeng Haibo 
Published: February 2023

Abstract
Perovskites have showed significant potential for the application in photodetectors due to their outstanding electrical and optical properties. Integrating two-dimensional (2D) materials with perovskites can make full use of the high carrier mobility of 2D materials and strong light absorption of perovskite to realize excellent optoelectrical properties. Here, we demonstrate a photodetector based on the WTe2/CsPbI3 heterostructure. The quenching and the shortened lifetime of photoluminescence (PL) for CsPbI3 perovskite confirms the efficient charge transfer at the WTe2/CsPbI3 heterojunction. After coupled with WTe2, the photoresponsivity of the CsPbI3 photodetector is improved by almost two orders of magnitude due to the high-gain photogating effect. The WTe2/CsPbI3 heterojunction photodetector reveals a large responsivity of 1157 A W−1 and a high detectivity of 2.1 × 1013 Jones. The results pave the way for the development of high-performance optoelectronic devices based on 2D materials/perovskite heterojunctions.
Ultrasound shear wave phase velocity imaging using black-box system identification (BSI): a data-driven approach
Authors: Xiao Yang , Jin Jing , Yuan Yu , Zhao Yue , Li Dandan 
Published: February 2023

Abstract

Objective. Shear wave elasticity imaging (SWEI) is an established approach for diagnosing lesions in human tissue. However, the shear wavelengths used by traditional SWEI are usually not short enough, leading to inferior accuracy in small-target (<10 mm) reconstruction. To exploit short shear wavelengths (high-frequency content), this study introduces a new phase velocity (PV) estimation technique as an alternative to the conventional group velocity (GV) modality. Approach. We propose using a black-box model instead of a fully physics-based model to describe the transition process of two arbitrary shear wave signals. With this representation, local PV can be obtained via black-box system identification (BSI). For validation, two PV estimation scenarios were established: (numerical) dispersion measurements in viscoelastic media, and (real) imaging targets in a CIRS elasticity phantom. BSI was compared with a state-of-the-art PV imaging method that uses local wavenumber estimation (LWE). Main results. BSI showed excellent accuracy in the dispersion estimation for all three viscoelastic media in the simulations. In the phantom study, the two PV methods exhibited good agreement in the frequency dependence of target quantification, and could both generate a higher target reconstruction accuracy than GV. LWE images were strongly affected by noise-induced faulty estimates, whereas BSI showed no notable artifacts. Significance. This study demonstrates the advantage of the PV modality over the GV modality as the former can achieve better target visualization by increasing imaging frequency. It also implies the feasibility of data-driven modeling for soft tissue characterization.
Design and performance simulation studies of a breast PET insert integrable into a clinical whole-body PET/MRI scanner
Authors: Pommranz C M , Schmidt F P , Mannheim J G , Diebold S J , Tenzer C , Santangelo A , Pichler B J 
Published: February 2023

Abstract

Objective. Three different breast positron emission tomography (PET) insert geometries are proposed for integration into an existing magnetic resonance imaging (MRI) breast coil (Breast Biopsy Coil, NORAS MRI products) to be used inside a whole-body PET/MRI scanner (Biograph mMR, Siemens Healthineers) to enhance the sensitivity and spatial resolution of imaging inside the breast. Approach. Monte Carlo simulations were performed to predict and compare the performance characteristics of the three geometries in terms of the sensitivity, spatial resolution, scatter fraction, and noise equivalent count rate (NECR). In addition, the background single count rate due to organ uptake in a clinical scan scenario was predicted using a realistic anthropomorphic phantom. Main results. In the center of the field of view (cFOV), absolute sensitivities of 3.1%, 2.7%, and 2.2% were found for Geometry A (detectors arranged in two cylinders), Geometry B (detectors arranged in two partial cylinders), and Geometry C (detectors arranged in two half cylinders combined with two plates), respectively. The full width at half maximum spatial resolution was determined to be 1.7 mm (Geometry A), 1.8 mm (Geometry B) and 2.0 mm (Geometry C) at 5 mm from the cFOV. Designs with multiple scintillation-crystal layers capable of determining the depth of interaction (DOI) strongly improved the spatial resolution at larger distances from the transaxial cFOV. The system scatter fractions were 33.1% (Geometries A and B) and 32.3% (Geometry C). The peak NECRs occurred at source activities of 300 MBq (Geometry A), 310 MBq (Geometry B) and 340 MBq (Geometry C). The background single-event count rates were 17.1 × 106 cps (Geometry A), 15.3 × 106 cps (Geometry B) and 14.8 × 106 cps (Geometry C). Geometry A in the three-layer DOI variant exhibited the best PET performance characteristics but could be challenging to manufacture. Geometry C had the lowest impact on the spatial resolution and the lowest sensitivity among the investigated geometries. Significance. Geometry B in the two-layer DOI variant represented an effective compromise between the PET performance and manufacturing difficulty and was found to be a promising candidate for the future breast PET insert.
A novel external/internal tumor tracking approach to compensate for respiratory motion baseline drifts
Authors: Giżyńska Marta K , Seppenwoolde Yvette , Kilby Warren , Heijmen Ben JM 
Published: February 2023

Abstract

Objective. Real-time respiratory tumor tracking as implemented in a robotic treatment unit is based on continuous optical measurement of the position of external markers and a correlation model between them and internal target positions, which are established with X-ray imaging of the tumor, or fiducials placed in or around the tumor. Correlation models are created with fifteen simultaneously measured external/internal marker position pairs divided over the respiratory cycle. Every 45–150 s, the correlation model is updated by replacing the three first acquired data pairs with three new pairs. Tracking simulations for >120.000 computer-generated respiratory tracks demonstrated that this tracking approach resulted in relevant inaccuracies in internal target position predictions, especially in case of presence of respiratory motion baseline drifts. Approach. To better cope with drifts, we introduced a novel correlation model with an explicit time dependence, and we proposed to replace the currently applied linear-motion tracking (LMT) by mixed-model tracking (MMT). In MMT, the linear correlation model is extended with an explicit time dependence in case of a detected baseline drift. MMT prediction accuracies were then established for the same >120.000 computer-generated patients as used for LMT. Main results. For 150 s update intervals, MMT outperformed LMT in internal target position prediction accuracy for 93.7 ∣ 97.2% of patients with 0.25 ∣ 0.5 mm min−1 linear respiratory motion baseline drifts with similar numbers of X-ray images and similar treatment times. For the upper 25% of patients, mean 3D internal target position prediction errors reduced by 0.7 ∣ 1.8 mm, while near maximum reductions (upper 10% of patients) were 0.9 ∣ 2.0 mm. Significance. For equal numbers of acquired X-ray images, MMT greatly improved tracking accuracy compared to LMT, especially in the presence of baseline drifts. Even with almost 50% less acquired X-ray images, MMT still outperformed LMT in internal target position prediction accuracy.
Local enhancement of electron heating and neutral species generation in radio-frequency micro-atmospheric pressure plasma jets: the effects of structured electrode topologies
Authors: Liu Yue , Vass Máté , Hübner Gerrit , Schulenberg David , Hemke Torben , Bischoff Lena , Chur Sascha , Steuer David , Golda Judith , Böke Marc , Schulze Julian , Korolov Ihor , Mussenbrock Thomas 
Published: February 2023

Abstract
The effects of structured electrode topologies on He/O2 radio frequency micro-atmospheric pressure plasma jets driven at 13.56 MHz are investigated by a combination of 2D fluid simulations and experiments. Good qualitative agreement is found between the computational and experimental results for the 2D spatio-temporally resolved dynamics of energetic electrons measured by phase resolved optical emission spectroscopy, 2D spatially resolved helium metastable densities measured by tunable diode laser absorption spectroscopy and 2D spatially resolved atomic oxygen densities measured by two photon absorption laser induced fluorescence. The presence of rectangular trenches of specific dimensions inside the electrodes is found to cause a local increase of the electron power absorption inside and above/below these surface structures. This method of controlling the electron energy distribution function via tailored surface topologies leads to a local increase of the metastable and atomic oxygen densities. A linear combination of trenches along the direction of the gas flow is found to result in an increase of the atomic oxygen density in the effluent, depending linearly on the number of trenches. These findings are explained by an enhanced Ohmic electric field inside each trench, originating from (a) the low electron density, and, consequently, the low plasma conductivity inside the trenches, and (b) the presence of a current focusing effect as a result of the electrode topology.
Effects of gate roughness on low voltage InGaZnO thin-film transistors with ultra-thin anodized AlxOy dielectrics
Authors: Lin Xiaoyu , Jin Jidong , Kim Jaekyun , Xin Qian , Zhang Jiawei , Song Aimin 
Published: February 2023

Abstract
Low-voltage oxide semiconductors thin-film transistors (TFTs) with ultra-thin dielectrics are gaining attention in wearable electronics. However, it is a challenge for oxide semiconductor TFTs to operate at a low-voltage while maintaining high performance. In this article, ultra-thin Al
x
O
y
films (∼3 nm) are grown on aluminum (Al) electrodes with different surface roughness by anodization. The morphology and electrical properties of the anodized Al
x
O
y
films are studied. Furthermore, InGaZnO (IGZO) TFTs with the anodized AlxOy dielectrics are fabricated. It is revealed that the rougher Al gate electrode deposition resulted in a higher interface trap density, which lead to the degradation of device performance. Through optimizing the surface roughness of the initial Al gate electrodes that are used for anodization, the IGZO TFTs can operate at 1 V and show desirable properties including a reasonable saturation mobility of 5.5 cm2 V−1s−1, a low threshold voltage of 0.37 V, a small subthreshold swing of 79 mV decade−1, and a high current on-off ratio of over 106. This work shows the potential of using anodization in the future for low-power wearable electronics.
Predictable and robust performance of a Bi-2223 superconducting coil for compact isochronous cyclotrons
Authors: Vermeer C H , Tolboom A H , Otten S J , G Krooshoop H J , Lubkemann R , Leferink J , Wessel W A J , Nijhuis A , Godeke A , Walpole M , Heese J , Hayashi K , Shizuya E 
Published: February 2023

Abstract
The development of ever smaller medical particle accelerators is motivated by a desire to make proton therapy accessible to more patients. Reducing the footprint of particle accelerators and subsequently proton therapy facilities allows for cheaper and broader usage of proton therapy. By employing superconducting technologies for field shaping, the size of particle accelerators can be reduced further below what is possible with saturated iron. This article discusses experiments on a first-of-its-kind double pancake (DP), and an assembly of six DP coils, designed to be used as a so-called ‘flutter coil’ for a compact isochronous cyclotron for proton therapy, fabricated from high-temperature superconducting (HTS) Bi

2
−
x

Pb
x
Sr2Ca2Cu3O
y
(Bi-2223) tape. The coils were mounted under pre-stress within a stainless-steel structure to maintain mechanical stability during the experiments. The critical current as a function of the temperature of both coils was measured in a conduction-cooled setup. A model describing the coils, based on tape data, was created and revealed that the measurements were in excellent agreement with the predictions. Additional experiments were performed to study the quench and thermal runaway behaviour of the HTS coils, determining whether such coils can be protected against fault scenarios, using realistic quench-detection levels and discharge extraction-rates. These experiments demonstrate that the coils are very robust and can be well protected against quenches and thermal-runaway events using common quench-protection measures with realistic parameters.
A novel capacitively coupled plasma driven by hollow cathode radio-frequency discharges
Authors: Xiao Xijian , Wu Jidun , Cao Qilu , Huang Xiaojiang 
Published: February 2023

Abstract
New plasma sources with high density and low energy are required to process material surfaces in nanometers. In this study, an electrode integrated with a hollow cathode (HC) and capacitively coupled plasma (CCP) was developed. With the tool, a novel capacitively coupled plasma driven by the hollow cathode radio-frequency discharges (HC-CCP) was observed experimentally, and its properties in the center of the chamber were investigated by a Langmuir probe. The results demonstrated that the HC-CCP presents wide ranges of electron density (n

e
), between 109 and 1010 cm−3, and electron energy (T

e
), 3.5–6.7 eV. And their distributions can be controlled by the modulation of radio-frequency source power and frequency, work pressure, and bias voltage. Therefore, this plasma source can be applied to a new generation of material processing.
New black hole solutions with a dynamical traceless nonmetricity tensor in Metric-Affine Gravity
Authors: Bahamonde Sebastian , Chevrier Johann , Gigante Valcarcel Jorge 
Published: February 2023

Abstract
In the framework of Metric-Affine Gravity, the existing correspondence between the
Einstein tensor and the energy-momentum tensor of matter provided by General Relativity is
extended towards a post-Riemannian description in terms of the torsion and nonmetricity fields,
which are sourced by the spin, dilation and shear currents of matter. In this work, we focus on
the dynamical role of the traceless part of the nonmetricity tensor and its intrinsic connection
with shears, defining a model which encloses a new black hole solution endowed with shear
charges. We show that the extension in the presence of dynamical torsion and Weyl vector leads to
the broadest family of static and spherically symmetric black hole solutions with spin, dilation
and shear charges in Metric-Affine Gravity so far.
Reaction 55Mn + 159Tb : preparation for the synthesis of new elements*
Authors: Chen Lixin , Xu Suyang , Zhang Zhiyuan , Wang Jianguo , Huang Minghui , Zhang Mingming , Ma Long , Yang Huabin , Yang Chunli , Wu Xiaolei , Zhou Houbing , Zhao Zhen , Huang Xinyuan , Zhou Hao , Zhang Xu , Sun Luchong , Li Zongchi , Gan Zaiguo 
Published: February 2023

Abstract
The complete fusion reaction of

Mn +

Tb was studied on the gas-filled recoil separator SHANS2. Nineteen ER - α

- α

decay chains from

Th produced from the 4n evaporation channel were observed. The α-particle energy and half-life of

Th were determined as 7922(14) keV and 14(4) ms, respectively. In addition, the decay properties of

= 7788(14) keV and

= 36

ms were obtained for

Th. The measured α decay properties of

Th and

Th were consistent with literature data. The cross sections were measured to be 0.59

nb and 0.19

nb for

Th and

Th, respectively. The equilibrium charge state of the recoiled nucleus

Th was determined experimentally. The new data were helpful for estimating the equilibrium charge states of elements 119 and 120, which could be produced via the

Pu(

Mn, 3n)

119 and

Am(

Mn, 3n)

120 reactions, respectively.