bluuebunny/crossref_metadata_2025_split huggingface dataset:
Discrete reference tracking control to swing up an electric wheelchair
Authors: Gray Michael , Guerra Thierry Marie , Delprat Sébastien , Mohammad S. 
Published: March 2023

AbstractMobility using wheelchair is a crucial feature for disabled people. Between a manual wheelchair and an electric wheelchair, there is a very interesting and promising solution consisting of an electrical kit that converts a manual wheelchair to an electric wheelchair. Autonomad‐Mobility is a company selling such kits, where the wheels are equipped with a brushless motor. It presents new possibilities for mobility, especially for crossing obstacles and running on different types of soil. Several methods have been tested, from linear to nonlinear ones including the linear parameter‐varying control framework. Nevertheless, the most dangerous and critical issue is to be able to produce a so‐called safe and robust swing‐up: the transition from standard mode (four wheels on the ground) to gyroscopic mode (the wheelchair balancing on the rear push‐wheels). The gyroscopic mode is a unique feature improving mobility by providing a way to overcome obstacles that would normally be unsurpassable due to the caster wheels. Whereas some results exist, the solution must be compatible with any wheelchair and any disabled person whatever is her/his height and weight. Robustness of this unstable feature is therefore the key point of the work knowing that “exact” modeling is unrealistic. With the model in descriptor form and using the quasi‐linear parameter‐varying framework new stabilization conditions formulated as linear matrix inequality constraints are developed for attaining the goal. Simulations and real‐time experiments demonstrate the interest of this approach.
Boundary Mittag–Leffler stabilization of a class of time fractional‐order nonlinear reaction–diffusion systems
Authors: Zhao Ailiang , Li Junmin , Lei Yanfang , Zhou Huacheng 
Published: March 2023

AbstractBoundary control design of a class of time fractional‐order nonlinear reaction–diffusion systems (FNRDSs) is considered in three cases: domain‐averaged measurement, collocated boundary point measurement, and anti‐collocated boundary point measurement. For domain‐averaged measurement and collocated boundary point measurement, boundary controllers are designed directly based on the measurements, respectively. For the anti‐collocated boundary point measurement, to overcome the difficulty that the measurement cannot be used for the controller design directly, an observer is constructed firstly, and then, an observer‐based boundary controller is designed. Sufficient conditions for Mittag–Leffler (M‐L) stability of the closed‐loop system are all provided in terms of linear matrix inequalities (LMIs). Numerical simulation results are provided to illustrate the feasibility and effectiveness of the proposed methods.
Synthesis, structure elucidation, and chemiluminescent activity of new 9‐substituted 10‐(ω‐(succinimidyloxycarbonyl)alkyl)acridinium esters
Authors: Smith Keith , Mu Xiaojing , Li Zhaoqiang , Holland Andy M. , Woodhead J. Stuart , El‐Hiti Gamal A. 
Published: March 2023

AbstractSeveral new acridinium esters 2–9 having their central acridinium ring bearing a 9‐(2,5‐dimethylphenoxycarbonyl), 9‐(2,6‐bis(trifluoromethyl)phenoxycarbonyl) or 9‐(2,6‐dinitrophenoxycarbonyl) group, and a 10‐methyl, 10‐(3‐(succinimidyloxycarbonyl)propyl), 10‐(5‐(succinimidyloxycarbonyl)pentyl), or 10‐(10‐(succinimidyloxycarbonyl)decyl) group, have been synthesized and their chemiluminescent properties have been tested. The 2,5‐dimethylphenyl acridinium esters emit light slowly (glow) when treated with alkaline hydrogen peroxide, while the 2,6‐dinitrophenyl and 2,6‐bis(trifluoromethyl)phenyl esters emit light rapidly (flash). The substituent at the 10 position affects the hydrolytic stabilities of the compounds.
Psychotherapy training via a task‐based assessment of the multicultural orientation framework: A pilot study
Authors: Stewart Shaakira Haywood , Drinane Joanna M. , Owen Jesse , Dumas Denis 
Published: March 2023

AbstractThis pilot study involved the development and initial testing of an applied Multicultural Orientation Performance Task (MCO‐PT) and coding system. The MCO‐PT was comprised of seven brief video simulations of cultural exchanges. Seventy‐four graduate students recorded responses and then completed measures of desirable responding and multicultural competence. Research assistants coded the videos on three dimensions: cultural humility, cultural opportunities and cultural comfort (ICCs 0.61–0.97). Exploratory factor analysis yielded three factors that corresponded with the MCO constructs (alphas 0.77–0.97). Cultural opportunities were positively correlated with multicultural competence, and none of the subscales were associated with social desirability.
Functional Quality, Antioxidant Capacity and Essential Oil Percentage in Different Mint Species Affected by Salinity Stress
Authors: Hosseini Seyyed Jaber , Tahmasebi‐Sarvestani Zeinolabedin , Mokhtassi‐Bidgoli Ali , Keshavarz Hamed , Kazemi Shahryar , Khalvandi Masoumeh , Pirdashti Hematollah , Hamidreza Hashemi‐Petroudi Seyyed , Nicola Silvana 
Published: March 2023

AbstractSaline stress is responsible for significant reductions in the growth of plants, and it globally leads to limitations in the performance of crops, especially in drought‐affected areas. However, a better understanding of the mechanisms involved in the resistance of plants to environmental stress can lead to a better plant breeding and selection of cultivars. Mint is one of the most important medicinal plants, and it has important properties for industry, and for the medicinal and pharmacy fields. The effects of salinity on the biochemical and enzymatic properties of 18 ecotypes of mint from six different species, that is, Mentha piperita, Mentha mozafariani, Mentha rotundifolia, Mentha spicata, Mentha pulegium and Mentha longifolia, have been examined in this study. The experimental results showed that salinity increased with increasing in stress integrity influenced the enzymatic properties, proline content, electrolyte leakage, and the hydrogen peroxide, malondialdehyde, and essential oil contents. Cluster analysis and principal component analysis were conducted, and they grouped the studied species on the basis of their biochemical characteristics. According to the obtained biplot results, M. piperita and M. rotundifolia showed better stress tolerance than the other varieties, and M. longifolia was identified as being salt sensitive. Generally, the results showed that H2O2 and malondialdehyde had a positive connection with each other and showed a reverse relationship with all the enzymatic and non‐enzymatic antioxidants. Finally, it was found that the M. spicata, M. rotundifolia and M. piperita ecotypes could be used for future breeding projects to improve the salinity tolerance of other ecotypes.
Replication Protein A Enhances Kinetics of Uracil DNA Glycosylase on ssDNA and Across DNA Junctions: Explored with a DNA Repair Complex Produced with SpyCatcher/SpyTag Ligation
Authors: Greenwood Sharon N. , Kulkarni Rashmi S. , Mikhail Michel , Weiser Brian P. 
Published: March 2023

AbstractDNA repair proteins participate in extensive protein−protein interactions that promote the formation of DNA repair complexes. To understand how complex formation affects protein function during base excision repair, we used SpyCatcher/SpyTag ligation to produce a covalent complex between human uracil DNA glycosylase (UNG2) and replication protein A (RPA). Our covalent “RPA−Spy−UNG2” complex could identify and excise uracil bases in duplex areas next to ssDNA−dsDNA junctions slightly faster than the wild‐type proteins, but this was highly dependent on DNA structure, as the turnover of the RPA−Spy−UNG2 complex slowed at DNA junctions where RPA tightly engaged long ssDNA sections. Conversely, the enzymes preferred uracil sites in ssDNA where RPA strongly enhanced uracil excision by UNG2 regardless of ssDNA length. Finally, RPA was found to promote UNG2 excision of two uracil sites positioned across a ssDNA−dsDNA junction, and dissociation of UNG2 from RPA enhanced this process. Our approach of ligating together RPA and UNG2 to reveal how complex formation affects enzyme function could be applied to examine other assemblies of DNA repair proteins.
An examination of associations between sexual assault and health problems, depression or suicidal ideation in a large nationally representative cohort of male and female 20–30‐year‐olds
Authors: Turgumbayev Marlen , Shopabayev Batir , Dzhansarayeva Rima , Izbassova Assel , Beaver Kevin 
Published: March 2023

AbstractBackgroundA long line of research has examined whether being the victim of sexual assault is associated with negative and maladaptive outcomes, but has mainly focused on women and girls.AimsTo replicate and extend prior research by examining whether various measures of sexual assault are related to physical ill‐health, depression and/or suicidal ideation, regardless of sex or age of victim. Our research questions were (1) is sexual assault related to health problems, depression and suicidal ideation and (2) do these associations differ between men and women?MethodWe analyse data from the National Longitudinal Study of Adolescent to Adult Health (Add Health), a longitudinal study of a US nationally representative sample of nearly 21,000 young people recruited for the first wave of interviews when most of the participants were between ages 12 and 18 years. We used Wave 4 data, collected for participants who were in their 20s and 30s, on experience of both physical sexual assault and non‐physical sexual assault and mental state, allowing for some characteristics measured in Wave 1. Allowing for missing data, sample sizes were between 6868 and 10,489 for the women and 6024 and 10,263 for the men.ResultsStatistically significant associations were revealed between the physical and non‐physical measures of sexual assault and the health problems scale, the depression scale and the measure of suicidal ideation. These associations remained statistically significant even after controlling for key covariates measured at Wave 1, including exposure to delinquent peers, poverty and demographic characteristics.ConclusionsSexual assault at some time and of whatever kind, although more commonly reported by women than men, is similarly associated with serious physical and mental health problems during their 20s and 30s. More sequencing detail is required for better prevention of harms.
Dental loss, stress fractures, and musculoskeletal pain in a 48‐year‐old woman
Authors: Hoang Lindsay T. , Hatfield Jennifer S. , Nguyen Quan , Shakir Mohamed K. M. , Hoang Thanh D. 
Published: March 2023

AbstractWe report a 48‐year‐old female patient with various stress fractures of extremities, musculoskeletal pain, and tooth loss. Hypophosphatasia was diagnosed based on clinical and laboratory findings and ALPL genetic results. This case highlights the importance of early diagnosis of hypophosphatasia in adults and appropriate treatment to prevent further complications.
Delusional Infestation: A case of Ekbom syndrome in an elderly woman with a long history of HIV
Authors: Mandari Sadiki , Aslan Suluma , Deodatus Shani , Nyundo Azan 
Published: March 2023

AbstractA 70‐year‐old female presented with a long history of HIV and 5 years of disturbing delusions of infestation that impaired her daily functioning. The delusions resolved with haloperidol but were followed by depressive symptoms. The case presents the complexity of managing neuropsychiatric manifestations of HIV/AIDS with comorbidities in old age.
Yellow urticaria revealing overlap syndrome of autoimmune hepatitis and primary biliary cholangitis
Authors: Toujani Sana , El Ouni Amira , Mestiri Souhir , Toujani Emna , Belhassen Asma , Meddeb Zeineb , Bouslama Kamel 
Published: March 2023

AbstractYellow urticaria is a variant of urticaria that is rarely reported in the literature. It usually occurs in the setting of a chronic liver disease and reflects the accumulation of bilirubin in the skin tissues. We report a case of yellow urticaria that occurred in a 33‐year‐old female patient suffering from systemic lupus erythematosus and overlap syndrome of autoimmune hepatitis and primary biliary cholangitis revealed by a migratory pruritic yellowish urticarial eruption on the trunk and limbs. Yellow urticaria may be an important clue to previously unknown liver or biliary disease as it generally occurs in the setting of hyperbilirubinemia.
Decatungstate‐Photocatalyzed Functionalization of α‐Imino Esters for the Preparation of Unnatural α‐Amino Acid Derivatives
Authors: Jorea Alexandra , Raviola Carlotta , Giustiniano Mariateresa , Ravelli Davide 
Published: March 2023

AbstractA library of unnatural α‐amino acid derivatives has been prepared via the hydrofunctionalization of the C=N bond in a set of compounds belonging to the family of α‐imino esters. The devised methodology capitalizes on the use of tetrabutylammonium decatungstate as the photocatalyst to generate C‐centered radicals from aliphatic and aromatic aldehydes, cyclic and acyclic oxygenated compounds and even cycloalkanes, via a hydrogen atom transfer (HAT) step. The best performance was observed when α‐hydrazono esters were employed in the role of radical traps, which delivered the corresponding (protected) α‐hydrazino acids as products. The versatility of the protocol was further demonstrated by the possibility to functionalize the herbicide safener isoxadifen‐ethyl.
Chiral and Structural Polymorphism of Fibril Architectures of Homologous Lysozymes
Authors: Hachlica Natalia , Rawski Michal , Górecki Marcin , Wajda Aleksandra , Kaczor Agnieszka 
Published: March 2023

AbstractAmyloid fibrils are fascinating and complex structures with the multilayered chiral organization. Using the multimodal methodology, including VCD, ECD, cryo‐EM, and TEM, we characterized in detail different levels of organization (secondary structure/protofilament/mesoscopic structure) of amyloid fibrils prepared from proteins highly homologous in the structure (hen egg white and human lysozymes). Our results demonstrate that small changes in the native protein structure or preparation conditions translate into significant differences in the handedness and architecture of the formed fibrils at various levels of their complexity. In particular, fibrils of hen egg white and human lysozymes obtained in vitro at the same preparation conditions, possess different secondary structure, protofilament twist and ultrastructure. Yet, formed fibrils adopted a relatively similar mesoscopic structure, as observed in high‐resolution 3D cryo‐EM, scarcely used up to now for fibrils obtained in vitro in denaturing condition. Our results add to other puzzling experiments implicating the indeterministic nature of fibril formation.
CO‐Preserving Photoinduced Transfer of Cymantrenyl Moiety: a Tandem Experimental and Computational Investigation
Authors: Chaliy Vasiliy A. , Kelbysheva Elena S. , Ezernitskaya Mariam G. , Strelkova Tatyana V. , Bochenkova Anastasia V. , Medvedev Michael G. , Telegina Lyudmila N. 
Published: March 2023

AbstractCyclopentadienyl manganese tricarbonyl (cymantrene) is known to undergo photochemical reactions by releasing one of its CO ligands. Here we present the first example of a photorearrangement of a cymantrenylmethyl fragment, where it retains all its three CO ligands. A tandem experimental and DFT (density functional theory)‐based computational investigation allows us to explain this unexpected behavior: the rearrangement, indeed, begins with the release of one CO ligand, but cage effect of the solvent captures this CO molecule, allowing it to rapidly reattach once the rearrangement takes place.
Chiral Atropisomeric‐NHC Catechodithiolate Ruthenium Complexes for Z‐Selective Asymmetric Ring‐Opening Cross Metathesis of Exo‐Norbornenes
Authors: Morvan Jennifer , Bouëtard Dylan , Kong Lingyu , Chou Yajie , Vives Thomas , Albalat Muriel , Roisnel Thierry , Crévisy Christophe , Nava Paola , Humbel Stéphane , Vanthuyne Nicolas , Clavier Hervé , Mauduit Marc 
Published: March 2023

AbstractA set of 16 chiral ruthenium complexes containing atropisomerically stable N‐Heterocyclic Carbene (NHC) ligands was synthesized from prochiral NHC precursors. After a rapid screening in asymmetric ring‐opening‐cross metathesis (AROCM), the most effective chiral atropBIAN‐NHC Ru‐catalyst (up to 97 : 3 er) was then converted to a Z‐selective catechodithiolate complex. The latter proved to be highly efficient in Z‐selective AROCM of exo‐norbornenes affording valuable trans‐cyclopentanes with excellent Z‐selectivity (>98 %) and high enantioselectivity (up to 96.5 : 3.5 er).
Learning to generalize aerial person re‐identification using the meta‐transfer method
Authors: Xu Lili , Peng Houfu , Lu Xing , Xia Daoxun 
Published: March 2023

SummaryPerson re‐identification (Re‐ID) aims to retrieve a person of interest across multiple nonoverlapping cameras. In recent years, to enable person Re‐ID technology to play out its application value in real‐world scenarios, visual surveillance through unmanned aerial vehicle (UAV) platforms has received intense attention, and aerial person datasets have been constructed. However, the pedestrian images captured by ground cameras and those captured by UAVs exhibit great differences. Person Re‐ID methods based on ground person images have difficulty performing Re‐ID on aerial person images. In this paper, we first use a meta‐transfer method to learn to generalize the aerial person Re‐ID task. Specifically, combining the ideas of meta‐learning and transfer learning, a meta‐learning strategy is introduced to study a feature extractor, and a transfer learning strategy is introduced to utilize and further improve the acquired meta‐knowledge. To prevent the catastrophic forgetting and overfitting problems caused by large‐scale model parameters, we freeze the lower‐layer neurons with powerful generalization and fine‐tune the higher‐layer neurons with strong specialization to transfer and represent the feature extractor. In addition, during the model training process, it is observed that the presence of difficult categories in the given dataset significantly affects the convergence speed and recognition accuracy of the utilized meta‐learning method, and the loss function based on the general Euclidean distance measure tends to mislead the model to optimize in a suboptimal direction. Therefore, we introduce a curriculum sampling based learning strategy that is harmonized with our meta‐transfer learning framework and a new metric formulation of sample similarity based on the Mahalanobis distance to improve the model. In the experimental part, when our method is adopted, a Rank‐1 accuracy of 63.63% and a mean average precision (mAP) of 38.02% are achieved on an aerial Re‐ID dataset, demonstrating its potential for completing person Re‐ID with aerial images. The results obtained on two commonly used ground pedestrian datasets show the generalization of the proposed method. Ablation studies also validate that each component contributes to improving the performance of the model.
Theoretical and Experimental Determination of Thermomechanical Properties of Epoxy‐SiO2 Nanocomposites
Authors: Adnan Mohammed Mostafa , Kroyan Arpenik , Srivastava Chaman , Grammatikos Sotirios , Glaum Julia , Glomm Ese Marit‐Helen , Schnell Sondre Kvalvåg , Einarsrud Mari‐Ann 
Published: March 2023

AbstractImprovements in the thermomechanical properties of epoxy upon inclusion of well‐dispersed SiO2 nanoparticles have been demonstrated both experimentally and through molecular dynamics simulations. The SiO2 was represented by two different dispersion models: dispersed individual molecules and as spherical nanoparticles. The calculated thermodynamic and thermomechanical properties were consistent with experimental results. Radial distribution functions highlight the interactions of different parts of the polymer chains with the SiO2 between 3 and 5 nm into the epoxy, depending on the particle size. The findings from both models were verified against experimental results, such as the glass transition temperature and tensile elastic mechanical properties, and proved suitable for predicting thermomechanical and physicochemical properties of epoxy‐SiO2 nanocomposites.
FunFun: ITS‐based functional annotator of fungal communities
Authors: Krivonos Danil V. , Konanov Dmitry N. , Ilina Elena N. 
Published: March 2023

AbstractThe study of individual fungi and their communities is of great interest to modern biology because they might be both producers of useful compounds, such as antibiotics and organic acids, and pathogens of various diseases. And certain features associated with the functional capabilities of fungi are determined by differences in gene content. Information about gene content is most often taken from the results of functional annotation of the whole genome. However, in practice, whole genome sequencing of fungi is rarely performed. At the same time, usually sequence amplicons of the ITS region to identify fungal taxonomy. But in the case of amplicon sequencing there is no way to perform a functional annotation. Here, we present FunFun, the instrument that allows to evaluate the gene content of an individual fungus or mycobiome from ITS sequencing data. FunFun algorithm based on a modified K‐nearest neighbors algorithm. As input, the program can use ITS1, ITS2, or a full‐size ITS cluster (ITS1‐5.8S‐ITS2). FunFun was realized as a pip‐installed command line instrument and validated using a shuffle‐split approach. The developed instrument can be very useful in the fungal community comparing and estimating functional capabilities of fungi under study. Also, the program can predict with high accuracy the most variable functions.
Spore traits mediate disturbance effects on arbuscular mycorrhizal fungal community composition and mutualisms
Authors: Hopkins Jacob R. , Bennett Alison E. 
Published: March 2023

AbstractTrait‐based approaches in ecology are powerful tools for understanding how organisms interact with their environment. These approaches show particular promise in disturbance and community ecology contexts for understanding how disturbances like prescribed fire and bison grazing influence interactions between mutualists like arbuscular mycorrhizal (AM) fungi and their plant hosts. In this work we examined how disturbance effects on AM fungal spore community composition and mutualisms were mediated by selection for specific functional spore traits at both the species and community level. We tested these questions by analyzing AM fungal spore communities and traits from a frequently burned and grazed (bison) tallgrass prairie system and using these spores to inoculate a plant growth response experiment. Selection for darker, pigmented AM fungal spores, changes in the abundance and volume of individual AM fungal taxa, and altered sporulation, were indicators of fire and grazing effects on AM fungal community composition. Disturbance associated changes in AM fungal community composition were then correlated with altered growth responses of Schizachyrium scoparium grass. Our work shows that utilization of trait‐based approaches in ecology can clarify the mechanisms that underly belowground responses to disturbance, and provide a useful framework for understanding interactions between organisms and their environment.