bluuebunny/crossref_metadata_2025_split huggingface dataset:
Super-twisting MPPT control for grid-connected PV/battery system using higher order sliding mode observer
Authors: Dunna Vijaya Kumar , Chandra Kumar Pakki Bharani , Rout Pravat Kumar , Sahu Binod Kumar , Manoharan Premkumar , Alsoud Anas R. , Derebew Bizuwork 
Published: July 2024

AbstractIn recent times, photovoltaic (PV) power generation has been growing due to increase in energy demand. In grid-connected mode, achieving maximum power (MP) from the PV array is difficult by using conventional techniques due to various reasons like low tracking efficiency, stability issues, etc. This motivates the design of an appropriate control strategy to obtain the maximum power point tracking (MPPT) to harvest MP from the PV array. This paper proposes a combined higher order sliding mode observer (HOSMO)–super-twisting control (STC) for a grid-connected scenario. A perturb and observe (P &O) technique is employed to generate reference voltage, and a HOSMO is proposed to drive the STC by estimating the inductor current of the PV boost converter. The proposed controller performance is evaluated based on response time across various scenarios, including generation changes, dynamic faults, islanding and resynchronization, and load variations in comparison to other existing controllers. These microgrid test cases have been thoroughly simulated, and their effectiveness has been validated in real-time using OPAL-RT (OP4510).
Dynamic evaluation of corneal cross-linking and osmotic diffusion effects using optical coherence elastography
Authors: Frigelli Matteo , Büchler Philippe , Kling Sabine 
Published: July 2024

AbstractDynamic deformation events induced by osmosis or photochemical stiffening substantially influence geometrical and mechanical assessments in post-mortem corneas, therefore need to be carefully monitored in experimental settings. In this study, we employed optical coherence elastography (OCE) to quantify dynamic deformation processes at high resolution in freshly enucleated porcine corneas. Osmotic effects were studied by immerging n = 9 eyes in preservation media of three different tonicities. Dynamic processes underlying corneal cross-linking (CXL) were studied by subjecting n = 6 eyes to standard Dresden treatment, while three control groups were used. The entire procedures were performed under an OCE setup during up to 80 min, acquiring a volumetric scan every 20 s. Changes in OCE-derived axial deformations were incrementally calculated between consecutive scans. Preservation conditions had a strong influence on the observed strain patterns, which were consistent with the tonicity of the medium (swelling in hypotonic, deswelling in hypertonic environment). In the CXL group, we observed deswelling of the anterior stroma 10 min after starting the UV irradiation, which was not observed in any control group (p = 0.007). The presented results proved OCE to be a valuable technique to quantify subtle dynamic biomechanical alterations in the cornea resulting from CXL and preservation solutions.
Assessment of Arctic sea ice simulations in cGENIE model and projections under RCP scenarios
Authors: Chen Di , Fu Min , Liu Xin , Sun Qizhen 
Published: July 2024

AbstractSimulating and predicting Arctic sea ice accurately remains an academic focus due to the complex and unclear mechanisms of Arctic sea ice variability and model biases. Meanwhile, the relevant forecasting and monitoring authorities are searching for models to meet practical needs. Given the previous ideal performance of cGENIE model in other fields and notable features, we evaluated the model’s skill in simulating Arctic sea ice using multiple methods and it demonstrates great potential and combined advantages. On this basis, we examined the direct drivers of sea-ice variability and predicted the future spatio-temporal changes of Arctic sea ice using the model under different Representative Concentration Pathways (RCP) scenarios. Further studies also found that Arctic sea ice concentration shows large regional differences under RCP 8.5, while the magnitude of the reduction in Arctic sea ice thickness is generally greater compared to concentration, showing a more uniform consistency of change.
A memristive circuit for self-organized network topology formation based on guided axon growth
Authors: Jenderny Sebastian , Ochs Karlheinz , Xue Daniel 
Published: July 2024

AbstractCircuit implementations of neuronal networks so far have been focusing on synaptic weight changes as network growth principles. Besides these weight changes, however, it is also useful to incorporate additional network growth principles such as guided axon growth and pruning. These allow for dynamical signal delays and a higher degree of self-organization, and can thus lead to novel circuit design principles. In this work we develop an ideal, bio-inspired electrical circuit mimicking growth and pruning controlled by guidance cues. The circuit is based on memristively coupled neuronal oscillators. As coupling element, we use memsensors consisting of a general sensor, two gradient sensors, and two memristors. The oscillators and memsensors are arranged in a grid structure, where oscillators and memsensors realize nodes and edges, respectively. This allows for arbitrary 2D growth scenarios with axon growth controlled by guidance cues. Simulation results show that the circuit successfully mimics a biological example in which two neurons initially grow towards two target neurons, where undesired connections are pruned later on.
The association between visceral adiposity index and risk of type 2 diabetes mellitus
Authors: Zhou Haoran , Li Tianshu , Li Jie , Zhuang Xin , Yang Jie 
Published: July 2024

AbstractRelationships between the visceral adiposity index (VAI) and type 2 diabetes mellitus (T2DM) have been underexplored. The purpose of this study is to explore association between VAI and T2DM in adults in the US. Based on the National Health and Nutrition Examination Survey 2007–2018, 11,214 participants aged 20 years or older were included in a cross-sectional study. Multifactorial logistic regression analysis and smoothed curve fitting analysis were performed to investigate links between VAI and the prevalence of T2DM, as well as the stability and incidence between subgroups. In a fully adjusted continuous model, the aggregate population risk of T2DM increased 0.43-fold with each 1-unit increase in VAI [odds ratio (OR) = 1.43; 95% confidence interval (CI) 1.35–1.50]. In the fully adjusted categorical model with VAI scores stratified by quartiles, results showed a higher T2DM advantage among participants in the second, third, and fourth quartiles (Q2: OR 1.35, 95% CI 1.06–1.71; Q3: OR 2.46, 95% CI 1.95–3.11; Q4: OR 4.42, 95% CI 3.55–05.50). Compared with Q1, the prevalence of T2DM in the total population increased 3.42-fold in Q4. The above results indicated that VAI was positively associated with the prevalence of T2DM, which was consistent and nonlinear with the smoothed curve-fitting analysis (P for non-linear = 0). Subgroup analyses after adjusting for covariates showed that keeping with the overall population results, it also was found that there was an interaction between sex and hypertension in the subgroups. VAI was positively associated with the prevalence of T2DM and was more prevalent in women, non-hypertensive than in men, hypertensive populations.
The actin binding protein profilin 1 localizes inside mitochondria and is critical for their function
Authors: Read Tracy-Ann , Cisterna Bruno A , Skruber Kristen , Ahmadieh Samah , Liu Tatiana M , Vitriol Josefine A , Shi Yang , Black Joseph B , Butler Mitchell T , Lindamood Halli L , Lefebvre Austin EYT , Cherezova Alena , Ilatovskaya Daria V , Bear James E , Weintraub Neal L , Vitriol Eric A 
Published: July 2024

AbstractThe monomer-binding protein profilin 1 (PFN1) plays a crucial role in actin polymerization. However, mutations in PFN1 are also linked to hereditary amyotrophic lateral sclerosis, resulting in a broad range of cellular pathologies which cannot be explained by its primary function as a cytosolic actin assembly factor. This implies that there are important, undiscovered roles for PFN1 in cellular physiology. Here we screened knockout cells for novel phenotypes associated with PFN1 loss of function and discovered that mitophagy was significantly upregulated. Indeed, despite successful autophagosome formation, fusion with the lysosome, and activation of additional mitochondrial quality control pathways, PFN1 knockout cells accumulate depolarized, dysmorphic mitochondria with altered metabolic properties. Surprisingly, we also discovered that PFN1 is present inside mitochondria and provide evidence that mitochondrial defects associated with PFN1 loss are not caused by reduced actin polymerization in the cytosol. These findings suggest a previously unrecognized role for PFN1 in maintaining mitochondrial integrity and highlight new pathogenic mechanisms that can result from PFN1 dysregulation.
Pratique de l’éducation thérapeutique du patient en Tunisie : Point de vue du praticien
Authors: Saïd Fatma , Naceur Ines , Jebri Mériem , Ben Achour Tayssir , Smiti Monia , Houman Mohamed Habib 
Published: July 2024

Introduction : L’éducation thérapeutique des patients (ETP) traités par un antivitamine K (AVK) permet d’améliorer la sécurité et l’efficience de ce traitement en établissant une meilleure relation médecin-malade. L’objectif de notre étude est d’établir un état des lieux de la pratique de l’ETP auprès des médecins prescripteurs d’un AVK. Méthodes : Nous avons réalisé une étude transversale descriptive colligeant les réponses des médecins à un questionnaire électronique. Résultats : Parmi 92 médecins, 85 % avaient adopté avec leurs patients une démarche éducative, dont 65 % avaient eu une formation post-universitaire en ETP et 22 % se référaient à des ressources internationales pour guider leur pratique d’ETP. Le principal frein à la pratique de l’ETP était des contraintes organisationnelles (N = 12). Conclusion : La création de recommandations nationales en matière d’ETP et l’intégration de celle-ci dans la formation médicale et paramédicale sont primordiales.
Transition-Metal-Catalyzed Rapid Synthesis of Imidazo[2,1-b]thiazoles: Access to Aza-Fused Heterocycles via Aerobic Oxidative Coupling of 2-Aminothiazoles and Acetophenones
Authors: Dash Jyotirmayee , Basak Soumya Jyoti , Paul Pratap 
Published: July 2024

AbstractWe report an efficient synthesis of 6-substituted imidazo[2,1-b]thiazoles from 2-aminothiazoles and acetophenones through intramolecular cyclization of in situ generated thiazolium ylides. This one-pot cascade process efficiently forms two C–N bonds and is facilitated by both Cu(OTf)2/KI and FeCl3/ZnI2 systems. The method utilizes commercially available starting materials and features mild reaction conditions, tolerance to different functional groups, and ease of operation. The synthetic applicability has further been demonstrated through post-modification of imidazo[2,1-b]thiazole analogues.
Assessment of Cancer Chemotherapy Needs in Patients Attending Tertiary Care Cancer Center, q: A Cross-Sectional Study
Authors: Prakash G Hari , D. Sunil Kumar , K. Kiran P. , Arun Vanishri , Yadav Deepika 
Published: July 2024

Abstract
Introduction Globally, 19.3 million new cancer cases were diagnosed in 2020, with over 10.0 million cancer deaths. Patients with cancer often face various long-term physical, social, financial, psychological, and existential challenges, complicating their survivorship.
Objectives This study aimed to evaluate the different needs of patients undergoing chemotherapy at a tertiary care cancer center.
Materials and Methods Data were collected from a tertiary care cancer center using purposive sampling. A total of 101 samples were collected over a 2-month period.
Results The majority of participants were female (61.4%), with 38.6% being male. Most participants were in the third stage of cancer (57.4%), with 42.6% in the fourth stage. Localized metastasis was observed in 83.2% of participants. The most common symptoms were lack of appetite (59.4%) and nausea/vomiting (54.5%). Most participants rated the care provided by nurses during chemotherapy as good (86.1%). The majority had moderate needs (67.3%) during the treatment course.
Conclusion The study highlights significant needs in the physical and psychological domains among patients undergoing chemotherapy.
Anti-Mullerian Hormone Assessment in Assisted Reproductive Technique Outcome and Natural Conception
Authors: Sellami Inès , Barbotin Anne Laure , Bernard Valérie , Robin Geoffroy , Catteau-Jonard Sophie , Sonigo Charlotte , Peigné Maeliss 
Published: July 2024

AbstractIn recent years, the prevalence of infertility has increased, and appears to affect approximately one in six couples. Some of them must perform assisted reproductive techniques (ART) in order to achieve pregnancy. As a result, growing interest has arisen about predictive factors of pregnancy and live birth with and without ART. Anti-Mullerian hormone (AMH) is a glycoprotein discovered in the 1950s in male embryonic sexual differentiation. Later, in 1984, its role in folliculogenesis was reported: secreted by granulosa cells, this hormone is involved in the regulation of the recruitment of primordial follicles and in follicular growth. AMH assays were developed for women in 1990s, and the serum AMH level has rapidly become a crucial element in managing women's fertility. Based mainly on its ability to be a quantitative but indirect marker of ovarian reserve, the serum AMH assay is widely used in reproductive medicine and ART. This review summarizes current knowledge of the AMH assessment in the field of reproductive medicine. We focus on the role of AMH level to predict spontaneous pregnancy occurrence, ART outcomes, and fertility preservation outcomes.
Precursor B Cell Acute Lymphoblastic Leukemia Presenting with Repeated Episodes of Hemophagocytic Lymphohistiocytosis
Authors: Desai Nihar , Chandra Dinesh , Gupta Ruchi , Kashyap Rajesh 
Published: July 2024

AbstractHemophagocytic lymphohistiocytosis (HLH) is a rare disorder characterized by dysregulated activation of cytotoxic T-lymphocytes and macrophages, resulting in excessive cytokine release and tissue damage. Although hematological malignancies and the chemotherapies used to treat them are frequently identified as triggering factors for HLH, B lymphoid leukemias are rarely implicated. In this report, we present an interesting case of a patient who presented with symptoms of HLH and was subsequently diagnosed with B-cell acute lymphoblastic leukemia. The further course of chemotherapy was complicated by another episode of HLH. This case highlights the complexity and the diverse triggers of HLH in the context of B lymphoid leukemia. Recognizing this atypical presentation is important to institute timely management strategies.
Exploring tear viscosity with quartz crystal microbalance technology
Authors: Muñoz G. , Millicovsky M. , Cerrudo J. , Peñalva A. , Machtey M. , Reta J. , Torres R. , Campana D. , Zalazar M. 
Published: July 2024

Tear viscosity is a critical property affecting tear distribution and ocular surface stability. While not widely established as a primary diagnostic marker, deviations from normal viscosity can impact ocular health, potentially contributing to conditions such as dry eye syndrome. Despite their importance, traditional viscometers require sample volumes that are not feasible to use with tear volume. This research introduces a novel Quartz Crystal Microbalance (QCM)-based method for tear viscosity measurement, offering a viscometer prototype that operates with minimal sample volumes. Human tear samples, solutions used in artificial eye drops, and various commercial eye drop brands were evaluated. Results show that the QCM method aligns with established viscosity ranges. The average viscosity of healthy human tears was found to be 1.73 ± 0.61 cP, aligning with the typical range of 1–10 cP. Variability in the viscosities of eye drop can be attributed to differences in their chemical compositions. The QCM method offers benefits such as reduced sample consumption and rapid results, enhancing understanding of tear dynamics for ocular health. Further research with larger sample sizes is needed to establish normative viscosity values in healthy individuals and those with dry eye syndrome, which is crucial for validating the device’s clinical efficacy.
Calibration and characterization of optical and x-ray streak cameras using a Ti:Sapphire laser system
Authors: Penman R. R. , Marshall G. , Pitt S. F. , Oades K. 
Published: July 2024

Optical and x-ray streak cameras are used to study transient phenomena, particularly in the high-energy density physics regime. The Orion laser facility employs many different types of streak cameras, which are used to collect data on laser-plasma interactions as well as to verify the temporal profile and timing between the multiple Orion beamlines. Streak cameras are complex devices with very precise timing associated with them, which can often malfunction, resulting in the loss of shot data. Since Orion is a kJ-class Nd:glass laser system, it is not optimal to try and fault-find using Orion shots since this is both time consuming and prohibitively expensive. To enable the facile set-up, fault-finding, timing-in, and in-house calibration of Orion optical and x-ray diagnostics, a single laboratory system has been commissioned to provide an adjustable stimulus to streak cameras and other Orion short pulse diagnostics (such as pulse dilation photomultiplier tubes). The system comprises a Ti:Sapphire laser system capable of generating 400 nm or 266 nm laser pulses of duration less than 0.1 ps; an optical system to deliver single pulses, pulse pairs, or a train of pulses; and timing electronics to synchronize the streak cameras with the laser and to record output data. The system can operate at Hertz repetition rates rather than the sub-mHz rate of the Orion laser. We present the commissioned system and results from initial testing of both optical and x-ray streak cameras used on Orion laser-plasma experiments.
Strain-induced enhancement of surface self-diffusion on strontium titanate (001) surfaces
Authors: Gueckelhorn D , Kersch A , Ruediger A 
Published: July 2024

Abstract
We present a numerical investigation of self-diffusion on strontium titanate TiO2-terminated (001) surfaces via density functional theory. Our calculations first indicate that Ti has the highest diffusion barrier with approximately 2.20 eV, thus representing the rate-limiting step for surface self-diffusion. Furthermore, the higher energy barriers of O and Ti in comparison to O2 and TiO2 indicate electronic activity with the surface atoms. Under the consideration of equi-biaxial strain as it would be encountered in e.g. heteroepitaxial thin films, the diffusion barriers for surface self-diffusion decrease for both compressive and tensile strains between −6% and 2%. For larger strains, we observe plastic deformations. This possibility to lower the energy barrier paves the way for accelerated and possible new mechanisms of surface diffusion and reconstruction of strontium titanate structures in a wide range of applications.
Transfer learning-based channel attention enhancement network combined with Gramian angular domain field for fault diagnosis
Authors: Hou Dongxiao , Mu Jintao , Zhang Bo , Chen Jiahui , Shi Peiming , Yan Shuang 
Published: July 2024

Abstract
Convolutional neural networks are increasingly used in the field of fault diagnosis, in order to give full play to the performance of the network within a certain number of model layers. While ensuring a high diagnostic accuracy, with strong generalization performance. We proposed a method that is simple, but effective. In this paper, we design a network structure for channel attention enhancement based on transfer learning (TL). The low-level is combined with TL to extract generic features of the target domain, and the high-level use a more refined channel attention module to extract and filter the abstract features of the current task object. The structure can fully exploit the fault information without increasing the network depth. Combined with Gramian angular difference field (GADF) to encode the vibration signal into 2D images as the input of the training model for fault diagnosis of rolling bearings. Source and target domains in TL uniformly use GADF encoded maps, effectively reducing the need for labeled samples. In order to validate the effectiveness of the method proposed in this paper, experiments were conducted using two publicly available bearing fault datasets and one laboratory-collected data, respectively. The results show that the proposed method is suitable for fault diagnosis of bearings in complex operating conditions and is highly generalizable.
Resolving crystallographic geometrically necessary dislocations in three dimensions in a hexagonal close packed titanium alloy
Authors: Witzen Wyatt A , Lamb James D , Arul Kumar Mariyappan , Echlin McLean P , Pollock Tresa M , Beyerlein Irene J 
Published: July 2024

Abstract
Geometrically necessary dislocation (GND) content is measured from mm3-scaled Ti7Al three-dimensional (3D) microstructural data using a theory extended for hexagonal close packed crystals, which accounts for basal, prismatic and pyramidal

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type dislocation content. The Ti7Al samples have been mechanically pre-strained to two different strain levels, and will then be strained along the same axis in uniaxial tension during simulation. Both inter- and intragranular GNDs across the microstructures have been characterized, with a large contribution of pyramidal

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GNDs, consistent with the relative slip activity involved in pre-straining. The spatially resolved crystallographic GND distributions within the 3D microstructures are used to instantiate a microstructure model for forward modeling deformation simulations by a dislocation density hardening elasto-viscoplastic fast Fourier transform framework. Coarsening the voxel resolution during the initial microstructure construction procedure is shown to strongly impact both the magnitude and spatial distribution of the GNDs and in turn the forward deformation response of the pre-strained material. This study indicates that the voxel resolution desired when transferring from measured to model microstructures need not only be proportionally scaled with the microstructure but also sufficiently fine to capture the subgranular orientation gradients that may already be present in the material.