bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and analysis of centrifugal compressor in carbon dioxide heat pump system
Authors: Jiang Peng , Tian Yong , Wang Bo , Guo Chaohong 
Published: March 2024

AbstractBased on the advantages of energy saving, environmental protection and high efficiency, carbon dioxide heat pump system has great application prospects. However, there are still many technical problems to be solved, especially the design and optimization of carbon dioxide centrifugal compressor. In this paper, a centrifugal compressor in carbon dioxide heat pump system is designed. The compressor is directly driven by a high-speed permanent magnet synchronous motor. Two-stage impellers are installed on both sides of the motor, and the bearings are active magnetic bearings. The influences of inlet pressure and temperature on compressor performance are analyzed. In the range of inlet temperature from 35 to 55 °C, with the decrease of inlet temperature, the compressor pressure ratio increases by 12–29.8%, the power increases by 2.7–8.6%. In the range of inlet pressure from 4 to 6 MPa, with the increase of inlet pressure, the compressor pressure ratio increases by 12.3–38.6%, and the power increases by 8.7–17.8%. In addition, the calculation method of compressor axial force is introduced, the axial force is calculated, analyzed and optimized. Furthermore, the rotor dynamics of compressor rotor and the influences of bearing stiffness and diameter of motor rotor on rotor dynamics are studied. With the increase of bearing stiffness, the first-order critical speed and maximum displacement of the rotor increase. The research provides a theoretical reference for the design and optimization of centrifugal compressor in carbon dioxide heat pump system.
A new method for the preparation of MgAl layered double hydroxide-copper metal–organic frameworks structures: application to electrocatalytic oxidation of formaldehyde
Authors: Habibi Biuck , Pashazadeh Ali , Pashazadeh Sara , Saghatforoush Lotf Ali 
Published: March 2024

AbstractIn this research, we present a novel design protocol for the in-situ synthesis of MgAl layered double hydroxide-copper metal–organic frameworks (LDH-MOFs) nanocomposite based on the electrocoagulation process and chemical method. The overall goal in this project is the primary synthesis of para-phthalic acid (PTA) intercalated MgAl-LDH with Cu (II) ions to produce the paddle-wheel like Cu-(PTA) MOFs nanocrystals on/in the MgAl-LDH structure. The physicochemical properties of final product; Cu-(PTA) MOFs/MgAl-LDH, were characterized by the surface analysis and chemical identification methods (SEM, EDX, TEM, XRD, BET, FTIR, CHN, DLS, etc.). The Cu-(PTA) MOFs/MgAl-LDH nanocomposite was used to modification of the carbon paste electrode (CPE); Cu-(PTA) MOFs/MgAl-LDH/CPE. The electrochemical performance of Cu-(PTA) MOFs/MgAl-LDH/CPE was demonstrated through the utilization of electrochemical methods. The results show a stable redox behavior of the Cu (III)/Cu (II) at the surface of Cu-(PTA) MOFs/MgAl-LDH/CPE in alkaline medium (aqueous 0.1 M NaOH electrolyte). Then, the Cu-(PTA) MOFs/MgAl-LDH/CPE was used as a new electrocatalyst toward the oxidation of formaldehyde (FA). Electrochemical data show that the Cu-(PTA) MOFs/MgAl-LDH/CPE exhibits superior electrocatalytic performance on the oxidation of FA. Also the diffusion coefficient, exchange current density (J°) and mean value of catalytic rate constant (Kcat) were found to be 1.18 × 10–6 cm2 s−1, 23 mA cm-2 and 0.4537 × 104 cm3 mol−1 s−1, respectively. In general, it can be said the Cu-(PTA) MOFs/MgAl-LDHs is promising candidate for applications in direct formaldehyde fuel cells.
A new model for compressor surge and stall control
Authors: Shahriyari M. J. , Firouzabadi A. , Khaleghi H. , Esmailifar S. M. 
Published: March 2024

AbstractThis paper compares the bifurcations and closed-loop performances of two compressor models, Moore-Greitzer (MG) and a developed model based on MG (Shahriyari Khaleghi, SK). First, both models are linearized about two equilibrium points (pure surge and fully-developed rotating stall), and the perturbed state-space dynamics and input matrices are obtained. The compressor unstable regions are then identified using an eigenvalue and global bifurcation analysis. Furthermore, optimal LQR controllers are designed, and the performances of closed-loop systems are compared. The LQRs are designed to control the compression system near the peak pressure rise by suppressing surge or stall. Results reveal that if the initial operating point is in the positive slope region of the compressor characteristic and the initial amplitude of the disturbances is small, the LQR controller can stabilize the compressor in both models. However, when the disturbances are intensive, the two models respond differently: although the SK model damps a fair range of disturbances and predicts instability for excessively powerful disturbances, the MG model always damps them, even when extremely intense. Without a controller in the MG model, initial disturbances (even very large) can never grow and are always damped in the compressor’s negative slope region (obviously, the same applies to the controller). However, pending the amplitude of the disturbances (in the absence of a controller), the disturbances in the SK model may be damped or grow. The SK model can successfully control the instabilities if the disturbances are small. Nonetheless, the controller fails to dampen the instabilities for extreme disturbances, which is consistent with reality.
Association between long-term sedentary behavior and depressive symptoms in U.S. adults
Authors: Guo Yuyang , Li Kaixin , Zhao Yue , Wang Changhong , Mo Hongfei , Li Yan 
Published: March 2024

AbstractThe study aimed to investigate the association between long-term sedentary behavior (LTSB) and depressive symptoms within a representative sample of the U.S. adult population. Data from NHANES 2017–2018 were used, encompassing information on demographics, depressive symptoms, physical activity (PA), and LTSB. Depressive symptoms were identified using the Patient Health Questionnaire (PHQ-9), with “depressive symptoms” defined as a PHQ-9 score of ≥ 5, and “moderate to severe depressive symptoms (MSDS)” defined as a PHQ-9 score of ≥ 10. PA and LTSB were assessed through the Global Physical Activity Questionnaire, where LTSB was interpreted as sedentary time ≥ 600 min. Restricted Cubic Spline (RCS) curves were utilized to observe potential nonlinear relationships. Binary Logistic regressions were conducted to analyze the associations. A total of 4728 participants (mean age 51.00 ± 17.49 years, 2310 males and 2418 females) were included in the study. Among these individuals, 1194 (25.25%) displayed depressive symptoms, with 417 (8.82%) exhibiting MSDS. RCS curves displayed increased risk of depressive symptoms with prolonged sedentary duration. Logistic regression models indicated significant associations between LTSB and depressive symptoms (OR 1.398, 95% CI 1.098–1.780), and LTSB and MSDS (OR 1.567, 95% CI 1.125–2.183), after adjusting for covariates. These findings suggest that LTSB may act as a potential risk factor for both depressive symptoms and MSDS in the studied population.
Detecting stochastic multiresonance in neural networks via statistical complexity measure
Authors: Wu Yazhen , Sun Zhongkui 
Published: March 2024

AbstractThis paper employs statistical complexity measure (SCM) to investigate the occurrence of stochastic multiresonance (SMR) induced by noise and time delay in small-world neural networks coupled with FitzHugh-Nagumo (FHN) neurons. Our findings reveal that SCM exhibits four local maxima at four optimal noise levels, providing evidence for the occurrence of quadruple stochastic resonances. When time delay $$\tau$$
τ
is taken into account in the information transmission, under moderate noise levels, SCM shows several local maxima when $$\tau = nT_{e}$$

τ
=
n

T
e

with $$n$$
n
being a positive integer and $$T_{e}$$

T
e

being the period of subthreshold signal. This indicates the appearance of delay-induced SMR at the multiples of the period of subthreshold signal. Intriguingly, at low noise levels, a strong coherence between time delay and neuronal firing dynamics emerges at $$\tau = nT_{e} - 2$$

τ
=
n

T
e

-
2

, as confirmed by a series of SCM maxima at these time delays. Furthermore, the study demonstrates that by adjusting the degrees and sizes of small-world networks, as well as the coupling strength, it is possible to optimize the strength of delay-induced SMR, thus maximizing the detection capability of subthreshold signal. The research results may provide us with an effective approach for understanding the role of time delay in signal detection and information transmission.
Self-assembled peptide-dye nanostructures for in vivo tumor imaging and photodynamic toxicity
Authors: Borum Raina M. , Retout Maurice , Creyer Matthew N. , Chang Yu-Ci , Gregorio Karlo , Jokerst Jesse V. 
Published: March 2024

AbstractWe report noncovalent assemblies of iRGD peptides and methylene blue dyes via electrostatic and hydrophobic stacking. These resulting nanomaterials could bind to cancer cells, image them with photoacoustic signal, and then treat them via photodynamic therapy. We first assessed the optical properties and physical properties of the materials. We then evaluated their utility for live cell targeting, in vivo imaging, and in vivo photodynamic toxicity. We tuned the performance of iRGD by adding aspartic acid (DD) or tryptophan doublets (WW) to the peptide to promote electrostatic or hydrophobic stacking with methylene blue, respectively. The iRGD-DD led to 150-nm branched nanoparticles, but iRGD-WW produced 200-nm nano spheres. The branched particles had an absorbance peak that was redshifted to 720 nm suitable for photoacoustic signal. The nanospheres had a peak at 680 nm similar to monomeric methylene blue. Upon continuous irradiation, the nanospheres and branched nanoparticles led to a 116.62% and 94.82% increase in reactive oxygen species in SKOV-3 cells relative to free methylene blue at isomolar concentrations suggesting photodynamic toxicity. Targeted uptake was validated via competitive inhibition. Finally, we used in vivo bioluminescent signal to monitor tumor burden and the effect of for photodynamic therapy: The nanospheres had little impact versus controls (p = 0.089), but the branched nanoparticles slowed SKOV-3 tumor burden by 75.9% (p < 0.05).
Retrospektive Langzeitergebnisse nach einer Nervendekompression nach
Dellon am Unterschenkel bei Polyneuropathie
Authors: Meyer-Marcotty Max V. , Attabit Abduasalam , März Vincent , Vogt Peter M. 
Published: March 2024

Zusammenfassung
Hintergrund Im Rahmen einer Polyneuropathie klagen die Patienten oft über
Schmerzen, Kribbeln, Taubheitsgefühle und eine vermehrte Sturzneigung. Nach
Ausschöpfen der konservativen Therapiemaßnahmen und bei Fortbestehen der
Beschwerden kann über eine Nervendekompression an der unteren Extremität bei
vielen Patienten eine Verbesserung der Beschwerden erreicht werden. Wir stellen
hier unsere Langzeitergebnisse dieser Operationsmethode vor.
Methode In die Studie wurden 33 Patienten mit einer idiopathischen oder
diabetischen Polyneuropathie, bei denen eine Nervendekompression nach Dellon in
den Jahren 2011–2013 an der unteren Extremität durchgeführt wurde,
eingeschlossen. Untersucht wurden bei 29 von 33 Patienten 3 Monate postoperativ
das Schmerzniveau (NRS 0–10), Kribbelparästhesien, Taubheitsgefühl,
Hoffman-Tinel-Zeichen und Semmes-Weinstein-Monofilament. 88 Monate postoperativ
(78–111 Monate) konnten wir 20 von 33 operierten Patienten anhand eines
Fragebogens zum Schmerzniveau (NRS 0–10), zur Zufriedenheit mit dem Ergebnis
(NRS 0–10) und zu der Frage, ob die Patienten diese Operation weiterempfehlen
würden, befragen.
Ergebnisse 1. Signifikante Schmerzreduktion 3 Monate postoperativ NRS 4,5
auf 2,2 (p=0,000). 2. Signifikante Reduktion der Kribbelparästhesien 3 Monate
postoperativ von 84,8% auf 24,2% (p=0,000) 3. Signifikante Reduktion des
Taubheitsgefühls 3 Monate postoperativ von 97% auf 39% (p=0,000). 4.
Signifikante Verbesserung der Oberflächensensibilität 3 Monate postoperativ von
91% ohne Sensibilität auf 28% ohne Sensibilität (P=0,000). 5. Signifikante
Verbesserung des positiven Hoffmann-Tinel-Zeichens 3 Monate postoperativ von 76%
auf 13% (p=0,000). Nach 88 Monaten zeigte sich weiterhin eine signifikante
Schmerzreduktion im Vergleich zu dem präoperativen Wert von NRS 4,5 auf
postoperativ 2,7 (p=0,048). Aufgrund der überwiegenden Patientenzufriedenheit
mit einem Wert von 3,4 (0–10 NRS) sowie Angabe einer deutlichen
Funktionsverbesserung würden 65% der behandelten Patienten das Verfahren
weiterempfehlen.
Schlussfolgerung Die Ergebnisse zeigen, dass mit einer Dekompression nach
Dellon an der unteren Extremität eine andauernde Schmerzreduktion und
Funktionsverbesserung erzielt werden können.
Trideuteromethylation of Alkyl and Aryl Bromides by Nickel-Catalyzed Electrochemical Reductive Cross-Electrophile Coupling
Authors: Steverlynck Joost , Sitdikov Ruzal , Rueping Magnus , Nikolaienko Pavlo , Kale Ajit Prabhakar 
Published: March 2024

AbstractA new nickel-catalyzed electrochemical, reductive cross-coupling for the trideuteromethylation of alkyl and aryl bromides is reported in which CD3 arenesulfonate derivatives were used as effective and readily available CD3 sources. The CD3-labeled products were obtained with good yields. It was demonstrated that this methodology is scalable and can be efficiently used for various methylations, including 13CH3 and 13CD3 labeling.
Anesthetic Considerations in a Patient with Large Cavernous Carotid Aneurysm
Authors: Singh Nidhi , Regmi Sabina , Jangra Kiran 
Published: March 2024

AbstractCavernous carotid aneurysms (CCA) are a rare form of intracranial aneurysms. Patients undergoing clipping of a large unruptured CCA pose multiple anesthetic concerns including intraoperative trigeminocardiac reflex (TCR). The anesthetist's role is paramount, specifically, preprocedure anesthetic preparation, close vital monitoring, familiarity with surgical steps, provision of a relaxed brain, and meticulous control of hemodynamics. Closed-loop communication with the surgeons throughout the surgical procedure is paramount. When TCR occurs, unnecessary use of anticholinergics should be discouraged as the hemodynamic perturbations resolve with cessation of the surgical stimulus.
Robotics in Microsurgery and Supermicrosurgery
Authors: Burns Heather R. , McLennan Alexandra , Xue Erica Y. , Yu Jessie Z. , Selber Jesse C. 
Published: March 2024

AbstractMicrosurgery has changed the ability to perform highly precise and technical surgeries through the utilization of high-powered microscopes and specialized instruments to manipulate and repair anatomical structures as small as a few millimeters. Since the first human trials of robotic-assisted microsurgery in 2006, the expansion of microsurgery to supermicrosurgery (luminal diameter less than 1 mm) has enabled successful repair of previously inaccessible structures. Surgical robotic systems can offer two distinct operative advantages: (1) minimal access surgery—by entering body cavities through ports, flap harvest can be redesigned to affect a minimally invasive approach for flaps such as the rectus abdominis muscle, the latissimus flap, and the deep inferior epigastric perforator flap; and (2) precision—by eliminating physiologic tremor, improving ergonomics, increasing accessibility to difficult spaces, and providing motion scaling, precision is significantly enhanced. Robotic-assisted microsurgery is a promising application of robotics for the plastic surgeon and has played an important role in flap harvest, head and neck reconstruction, nerve reconstruction, gender-affirming surgery, and lymphatic reconstruction—all the while minimizing surgical morbidity. This article aims to review the history, technology, and application of microsurgery and supermicrosurgery in plastic surgery.
Antisense Molecules in Epilepsy—A Neuropharmacological Educational Review
Authors: George Stephen Jefry Winner , George Stephen Jesiha , Ali Mohammed , Kumar Ashwin , Jose Susanna 
Published: March 2024

AbstractEpilepsy is a common neurological disorder. Epilepsy has many therapeutic options, the popular one being antiseizure medications. A good proportion of patients always responds well to the existing treatment modalities. But some patients develop resistant epilepsy, and treating them can be challenging with the current treatment; such scenarios are encountered frequently in patients, especially those under treatment for long-term as well as specific syndromes and channelopathies. Resistant epilepsy warrants the need to develop newer therapeutics for better treatment outcomes, and antisense oligonucleotides (ASOs) are one among them. Our review discusses the more recent startups called ASOs in the context of epilepsy therapeutics.
Vector hysteresis loops of rare earth magnets measured in a biaxial vibrating sample magnetometer
Authors: Martinek G. , Gross T. , Lanz M. , Schneider G. , Goll D. 
Published: March 2024

In many permanent magnet applications, there are regions in the magnet volume where the magnetic field acts at large angles to the direction of magnetization. The hysteresis curves, however, are determined almost exclusively with the magnetic fields applied along the preferred axis. This lack of information severely impairs the numerical modeling of important aspects of electrical machines, such as the risk of demagnetization or a reliable prediction whether a rotor can be assembled with unmagnetized magnets and subsequently magnetized in a multipole magnetizing fixture. In the rare cases where measurements with the field applied at an angle are performed, only the magnetization component in the direction of the applied field is detected. A reliable simulation would require measurements of the complete magnetization vector in fields applied at all angles. To this end, a commercially available vibrating sample magnetometer with a superconducting solenoid providing up to ±9 T was modified, replacing the existing detection coils with a twofold coil system measuring two orthogonal components of the magnetization. Details of this modification are reported, along with some examples of vectorial hysteresis curves measured on different types of rare earth magnets.
Do gestures reflect children’s lexical retrieval difficulties?
Authors: Nicoladis Elena , Hill Emma 
Published: March 2024

Abstract
According to the Lexical Retrieval Hypothesis, one important function of representational gestures is to help
speakers retrieve words for production. In this study, we test whether gestures help preschoolers access words for production. We
tested two predictions generated from the LRH. First, since bilinguals often have greater difficulties with lexical access than
monolinguals, we predicted that bilinguals will gesture more than monolinguals. Second, since low-frequency words are harder to
access than high frequency words, we predicted that the more low-frequency words children used, the more they would gesture. Using
children’s (aged 4 to 6 years) data from a storytelling task, we found no difference in gesture use between bilinguals and
monolinguals. We did, however, find that the use of low-frequency words was a positive predictor of gesture use. While this result
could support the LRH, an exploration of some examples of gesture production raises some doubts about that conclusion.
Multifunctionality and contextual realization
Authors: Hu Xuhui , Perry J. Joseph 
Published: March 2024

Abstract
This paper aims to make a contribution to the study of the nature of syntactic categories by analysing a single
element in a single language, namely the marker -lao in Yixing Chinese. Although this marker has previously been
analysed as an adjectivaliser (Hu and Perry 2018), we show that it has a much broader
range of uses. We suggest that the bulk of cases can be captured in a unified way by supposing that the marker in question
displays a type of possessive semantics (which we label possession-as-attribute), which is defined by delineating
a kind (in the sense of e.g. Carlson 1977; Chierchia 1998), with similar semantics being expressed by adjectival elements in languages such as
English. It is observed, however, that this meaning can emerge in the absence of the marker -lao, and that
-lao can, in a restricted set of cases, surface in the absence of this meaning, and we suggest that these
facts are attributable to the diachronic development of the marker and can be captured synchronically by making use of
late-insertion mechanisms for phonological and semantic features. We propose that the case of -lao provides a
suggestive argument for a substance-free approach to syntactic features, whereby syntactic features are not
inherently specified for interface interpretations. Other cross-linguistic implications of our analysis are noted, in particular
for the representation of adjectives.
Representing terminological data in the Semantic Web
Authors: Martín-Chozas Patricia , Declerck Thierry , Montiel-Ponsoda Elena , Rodríguez-Doncel Víctor 
Published: March 2024

Abstract
This paper describes an approach to represent terminologies in the machine-readable format of the Semantic Web, which improves the interoperability between terminological resources and opens up new possibilities yet to be discovered. The study’s motivation stems from the realization that the existing formalisms, such as SKOS or OntoLex-lemon, might not adequately capture the information within authoritative terminological resources. Therefore, we identified model requirements by formulating a set of Competency Questions derived from the analysis of terminological resources across various fields and domains, in line with the ontology development methodologies adopted in this work. During this analysis, we faced different representation challenges such as the various sources of term descriptions and the quality indicators related to terms. Consequently, we propose Termlex, a proposal based on the OntoLex-lemon model that combines the conceptual structure of the SKOS model with the lexical information as modelled in OntoLex-lemon. In Termlex, we define new classes and properties to cover the specific needs of terminological resources coming from a variety of approaches. The paper concludes with the instantiation of the Termlex model through three different use cases that follow different modelling approaches as a validation attempt.