bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical and experimental study on the relationship between pull-out force and indentation depth of aviation wire crimp terminal
Authors: Li Pin , Liu Gongping , Wang Ping , Huang Guangwen , Yu Zhuonan , Xiu Hang , Tian Chunlin 
Published: December 2022

AbstractTo study the numerical relationship between the pull-out force and indentation depth of aviation wire crimp terminal, the crimping process between electrical contacts and stranded conductors and the tensile process of crimping assembly were simulated by the explicit dynamic finite element method. Regarding the variation trend of the tension of the crimping assembly with the tensile displacement during the tensile process and the failure mode, the numerical results and the experimental results showed a high degree of fit, and the relative error of the pull-out force was only 2.6%, which verified the reliability of the established numerical model. This model obtained the pull-out force curve of the crimp terminal that changes with the indentation depth. The authors suggest selecting the interval where the pull-out force is not less than 95% of the peak value, and the depth is less than the corresponding value at the peak value as the best value range of the indentation depth.
The biochar-based nanocomposites influence the quantity, quality and antioxidant activity of essential oil in dill seeds under salt stress
Authors: Ghassemi-Golezani Kazem , Rahimzadeh Saeedeh 
Published: December 2022

AbstractThe essential oil content and composition of medicinal plants may be influenced by eco-friendly products for nutrient availability under abiotic stresses. This research was conducted to determine the effects of biochar (30 g kg−1 soil) and biochar-based nanocomposites (BNCs) of iron (30 g BNC-FeO kg−1 soil), zinc (30 g BNC-ZnO kg−1 soil), and their combined form (15 + 15 g) on dill (Anethum graveolens L.) under salinity levels (non-saline, 6 and 12 dS m−1). Application of biochar, particularly BNCs increased iron and zinc content and decreased sodium accumulation in leaf tissues. The seed essential oil content increased under high salinity. Salinity changed the values of major compounds in essential oil and induced the formation of compounds such as alpha,2-dimethylstyrene, cuminyl alcohol, p-cymene, and linalool. Biochar treatments especially BNCs with a higher production of monoterpenes increased the levels of limonene, carvone, apiol, and dillapioll. All extracts showed a considerable DPPH-inhibitory effect with application of BNCs under salinity. The maximum antioxidant activity was observed under high level of salinity with application of the combined form. Therefore, the combined form of nanocomposite was the best treatment to improve the content of basic commercial monoterpenes and consequently antioxidant activity of essential oil in salt-stressed dill plants.
A novel n-type semiconducting biomaterial
Authors: Fukuhara Mikio , Yokotsuka Tomonori , Hashida Toshiyuki , Ogawa Fumio , Sakamoto Tadashi , Takeda Mitsuhiro , Arai Susumu 
Published: December 2022

AbstractThere has been no research conducted thus far on the semiconducting behaviour of biomaterials. In this study, we present ann-type semiconducting biomaterial composed of amorphous kenaf cellulose fibre (AKCF) paper with a voltage-controlled N-type negative resistance. The AKCF generates an alternating-current wave with a frequency of 40.6 MHz from a direct-current voltage source at its threshold voltage (electric field of 5.26 kV/m), which is accompanied by a switching effect with a four-order resistance change at 293 K. This effect is attributed to the voltage-induced occurrence of strong field domains (electric double layers) at the cathode and depletion at the anode of the AKCF device. The proposed AKCF material presents considerable potential for applications in flexible/paper electronic devices such as high frequency power sources and switching effect devices.
Predictive value of serum initial brain natriuretic peptide and troponin on functional prognosis in noncardiogenic patients with anterior and posterior circulation cerebral infarction
Authors: Lu Wan-Ting , Du Wen-Ting , Lu De-Sheng , You Jie , Li Hong-yan 
Published: December 2022

Abstract
Background Brain natriuretic peptide (BNP) and troponin have a close relationship with cardiogenic cerebral embolism (CCE), but their relationship with noncardiogenic patients with anterior circulation ischemia (ACI) and posterior circulation ischemia (PCI) is not clear.
Objective To explore the predictive value of serum initial BNP and troponin on the functional prognosis of patients with noncardiogenic ACI and PCI.
Methods Consecutive patients with first-episode cerebral infarction within 12 hours of symptom onset were enrolled in the present 1-year prospective cohort study. Serum levels of BNP and troponin were collected within 12 hours of onset. Infarction location was classified as ACI and PCI by magnetic resonance imaging (MRI). According to the modified Rankin Scale (mRS) score at 90 days after onset, ACI and PCI cases were respectively divided into a good prognosis group (mRS score between 0 and 2) and a poor prognosis group (mRS score between 3 and 6). The general state of health and results of laboratory examinations and other auxiliary examinations of all patients were recorded. Single-factor analysis and multivariate logistic regression analysis were used to assess the relationship between serum levels of BNP, troponin, and functional outcome.
Results The multivariate logistic regression found that higher levels of initial BNP (odds ratio [OR] = 1.024; 95% confidence interval [CI]: 1.006–1.041; p = 0.007) and C-reactive protein (CRP) (OR = 1.184; 95%CI: 1.024–1.369; p = 0.022) were independent predictors of poor functional prognosis of noncardiogenic PCI at 90 days after onset after adjusting for age, gender, ethnicity, history of hypertension and of diabetes.
Conclusions The levels of initial BNP and CRP were related to poor functional outcomes in noncardiogenic PCI patients at 3 months, independent of troponin.
Digital technology and its impacts on the sleep quality and academic performance during the pandemic
Authors: Cabral Luana Guimarães Lima , Queiroz Taynara Nunes , Pol-Fachin Laércio , Santos Adriana Rodrigues Libório dos 
Published: December 2022

Abstract
Background Sleep deficits caused by the overuse of digital technology is observed among medical students. Due to the coronavirus disease 2019 (COVID-19) pandemic, an emergency remote teaching method was put into practice, which may have resulted in changes in the sleep-wake cycle. The balance between the influences of external and internal synchronizers can be affected by sudden alterations in daily life, including changes in nightly habits and sleep quality, which can lead to increased levels of anxiety and reduced functional performance, for example.
Objective To understand the relationship between the use of digital technology, changes in the circadian cycle, and academic performance during the pandemic.
Methods The present is an analytical, cross-sectional, observational study in which a sample of 123 medical students filled out an online questionnaire on self-perception regarding sleep quality and academic performance before and during the pandemic.
Results Assessing changes in sleep quality and productivity, the study revealed that 100% of the students made continuous use of screens before bedtime. Thus, during the period of social distancing and remote classes, 77.2% of the students reported “poor” or “very poor academic performance, which was probably related to the fact that 65.9% of these students were unable to maintain their productivity due to daytime sleepiness.
Conclusions The prolonged use of screens was associated with poor sleep quality and changes in academic performance, with significant psychological impact. Thus, it is worth emphasizing the importance of sleep hygiene in light of the new forms of teaching implemented during the COVID-19 pandemic.
Reading fluency during the COVID-19 pandemic: a longitudinal and cross-sectional analysis
Authors: Alves Luciana Mendonça , Carvalho Isa Mourão , Santos Luiz Felipe dos , Ribeiro Gabriela de Lima , Freire Laura de Souza Cardoso , Martins-Reis Vanessa de Oliveira , Labanca Ludimila , Celeste Letícia Correa 
Published: December 2022

Abstract
Background International studies performed during the periods of social isolation highlighted the potential loss of student's learning skills. The present study fills a gap in Brazilian research on this topic and focuses on the development of reading fluency.
Objective To investigate the development of the reading fluency of students in the early years of elementary school during e-learning as a result of the social distancing measures put into effect due to the coronavirus disease 2019 (COVID-19) pandemic.
Methods Students from grades 2 to 5 were recorded. The number of words read per minute and of those read correctly per minute were analyzed. Descriptive statistical analysis was performed, using analysis of variance (ANOVA) for repeated measures with Bonferroni correction in the longitudinal study, and the t-test in the cross-sectional study.
Results In the cross-sectional study, 162 students participated. Only the comparison between the 2nd grade classes of 2020 and 2021 showed a statistically significant difference. In the prepandemic classes, the students had better results in reading accuracy than the students assessed during the pandemic. The longitudinal study included 75 students, who improved in fluency rate and accuracy as expected between March and December 2020. In March 2021, the results showed a drop, which may be related to school closures during the Brazilian summer vacation.
Conclusions The present research demonstrates the results of Brazilian students in terms of the development of reading fluency during the pandemic. There was an expressive development in grades 2 and 3, with stability in the following grades. The 2nd grade class of 2021 suffered a major impact due to the pandemic.
Clinical profile of tuberous sclerosis complex patients with and without epilepsy: a need for awareness for early diagnosis
Authors: Pereira Conceição Campanario da Silva , Dantas Felipe Diego Gomes , Manreza Maria Luiza Giraldes de 
Published: December 2022

Abstract
Background Tuberous sclerosis complex (TSC) is a multisystemic disorder. Its clinical features manifest differently in several organs, prompting the need for better knowledge.
Objective The goal of the present study is to evaluate the neurological findings of TSC, such as cerebral lesions and epilepsy, and to raise awareness of non-neurological findings that could contribute to an earlier diagnosis and treatment.
Methods This was a natural history study of patients with a definitive diagnosis of TSC who were referred to a specialized outpatient clinic and followed-up for 2 years with clinical and radiological exams.
Results A total of 130 TSC patients (59 males [45.4%], mean age 20.4 years old [1 to 56 years old]); 107 patients (82.3%) were diagnosed with epilepsy. Seizures predominantly began at < 1 year old (72.8%); focal seizures predominated (86.9%); epileptic spasms occurred in 34.5% of patients, and refractory epilepsy was present in 55.1%. Neuropsychiatric disorders, cortical tubers and cerebellar tubers were significantly more frequent in the epilepsy group. Moreover, rhabdomyomas were significantly more frequent in the epilepsy group (p = 0.044), while lymphangioleiomyomatosis was significantly less frequent in the epilepsy group (p = 0.009). Other non-neurological findings did not differ significantly between the groups with and without epilepsy.
Conclusions The present study of TSC patients demonstrated the predominantly neurological involvement and significantly higher proportion of TSC-associated neuropsychiatric disorders in the epilepsy group. Higher proportions of cortical and cerebellar tubers may be a risk factor for epilepsy and neurodevelopmental disorders.
Processing speed impairment in chronic inflammatory demyelinating polyneuropathy patients: a cross-sectional study
Authors: Senem Iara , Spedo Carina Telarolli , Conde Rodrigo Melo , Reis Geraldo Cassio dos , Santos Antônio Carlos dos , Barreira Amilton Antunes , Marques Jr Wilson ,   (in memoriam)
Published: December 2022

Abstract
Background There is a lack of evidence of cognitive involvement in chronic inflammatory demyelinating polyneuropathy (CIDP) and, the reports about the involvement of the brain and central nervous system (CNS) are few and controversial. The Five Digit Test (FDT) evaluates processing speed (PS) and executive functions orally.
Objective To evaluate the performance on the FDT of CIDP patients with and without CNS (brain/cerebellum) alterations observed on brain Magnetic Resonance Imaging (MRI) scans.
Methods The Hospital Anxiety and Depression Scale (HADS, to assess neuropsychiatry symptoms), the Rasch-built Overall Disability Scale (R-ODS; to assess disability), and the FDT (to assess cognition) were applied to 14 CIDP patients and 24 age-matched healthy control subjects. The patients were submitted to routine brain MRI and, according to the results, they were divided into two groups: those with abnormalities on the MRI (CIDPabnl) and those with normal parameters on the MRI (CIDPnl). The FDT data of five CIDPnl patients and nine CIDPabnl subjects were analyzed. Comparisons between the groups were performed for each task of the FDT.
Results We found statistical differences for both groups of CIDP patients in terms of PS, for the patients spent more time performing the PS tasks than the controls. The PS measures were negatively associated with disability scores (reading: r = −0.47; p = 0.003; counting: r = −0.53; p = 0.001).
Conclusions Our data suggested the presence of PS impairment in CIDP patients. Disability was associated with slow PS.
Telehealth for Parkinson disease patients during the COVID-19 pandemic: the TeleParkinson study
Authors: Lima Danielle Pessoa , Gomes Vlademir Carneiro , Viana Júnior Antonio Brazil , Assis Francisco Mateus Carvalho de , Oliveira Pedro Henrique Avelino , Cunha Letícia Chaves Vieira , Braga Isabelly Cavalcante , Marques Miriam Lindsay Silva , Assunção Jézica de Sousa , Damasceno Adeline Louise Lopes , Barbosa Ana Lara Guerra , Moreira Arthur Holanda , Rocha Maria Eduarda Quidute Arrais , Porto Maria Eduarda Mendes Pontes , Chaves Érica Carneiro Barbosa , Oliveira Liliane Maria de , Roriz Filho Jarbas de Sá , Sobreira Neto Manoel Alves , Braga Neto Pedro 
Published: December 2022

Abstract
Background Telemedicine allows Parkinson disease (PD) patients to overcome physical barriers to access health care services and increases accessibility for people with mobility impairments.
Objective To investigate the feasibility indicators of a telehealth intervention for PD patients, including patient recruitment, attendance, technical issues, satisfaction, and benefits on levels of physical activity and sleep.
Methods We conducted a single-center, single-arm study of telehealth video consultations using WhatsApp (Meta Platforms, Inc., Menlo Park, CA, USA). Also, we collected the feasibility indicators as the primary endpoints. All the patients in the study were previously evaluated in person by the same team.
Results Patient recruitment, attendance, and technical issues rates were 61.3%, 90.5%, and 13.3%, respectively, with good scores of patient acceptance and satisfaction with the study intervention. The telehealth intervention improved physical activity, including the number of walks for at least 10 continuous minutes (p = 0.009) and the number of moderate-intensity activities lasting at least 10 continuous minutes (p = 0.001). The Pittsburgh sleep quality index (PSQI) scores also improved for one of its components: perceived sleep duration (p < 0.001) and for total Pittsburgh score (p < 0,001). The average travel time saving was 289.6 minutes, and money-saving was R$106.67 (around USD 18; almost 10% of the current minimum wage in Brazil).
Conclusions Direct-to-patient telehealth video consultations proved to be feasible and effective and had a positive impact on physical activity levels and sleep in PD patients.
In situ identification of surface sites in Cu–Pt bimetallic catalysts: Gas-induced metal segregation
Authors: Han Tongxin , Li Yuanyuan , Cao Yueqiang , Lee Ilkeun , Zhou Xinggui , Frenkel Anatoly I. , Zaera Francisco 
Published: December 2022

The effect of gases on the surface composition of Cu–Pt bimetallic catalysts has been tested by in situ infrared (IR) and x-ray absorption spectroscopies. Diffusion of Pt atoms within the Cu–Pt nanoparticles was observed both in vacuum and under gaseous atmospheres. Vacuum IR spectra of CO adsorbed on CuPtx/SBA-15 catalysts (x = 0–∞) at 125 K showed no bonding on Pt regardless of Pt content, but reversible Pt segregation to the surface was seen with the high-Pt-content (x ≥ 0.2) samples upon heating to 225 K. In situ IR spectra in CO atmospheres also highlighted the reversible segregation of Pt to the surface and its diffusion back into the bulk when cycling the temperature from 295 to 495 K and back, most evidently for diluted single-atom alloy catalysts (x ≤ 0.01). Similar behavior was possibly observed under H2 using small amounts of CO as a probe molecule. In situ x-ray absorption near-edge structure data obtained for CuPt0.2/SBA-15 under both CO and He pointed to the metallic nature of the Pt atoms irrespective of gas or temperature, but analysis of the extended x-ray absorption fine structure identified a change in coordination environment around the Pt atoms, from a (Pt–Cu):(Pt–Pt) coordination number ratio of ∼6:6 at or below 445 K to 8:4 at 495 K. The main conclusion is that Cu–Pt bimetallic catalysts are dynamic, with the composition of their surfaces being dependent on temperature in gaseous environments.
Heterogeneous stochastic bifurcations explain intrinsic oscillatory patterns in entorhinal cortical stellate cells
Authors: Mittal Divyansh , Narayanan Rishikesh 
Published: December 2022

Stellate cells (SC) in the medial entorhinal cortex manifest intrinsic membrane potential oscillatory patterns. Although different theoretical frameworks have been proposed to explain these patterns, a robust unifying framework that jointly accounts for intrinsic heterogeneities and stochasticity is missing. Here, we first performed in vitro patch-clamp electrophysiological recordings from rat SCs and found pronounced cell-to-cell variability in their characteristic physiological properties, including peri-threshold oscillatory patterns. We demonstrate that noise introduced into two independent populations (endowed with deterministic or stochastic ion-channel gating kinetics) of heterogeneous biophysical models yielded activity patterns that were qualitatively similar to electrophysiological peri-threshold oscillatory activity in SCs. We developed spectrogram-based quantitative metrics for the identification of valid oscillations and confirmed that these metrics reliably captured the variable-amplitude and arhythmic oscillatory patterns observed in electrophysiological recordings. Using these quantitative metrics, we validated activity patterns from both heterogeneous populations of SC models, with each model assessed with multiple trials of different levels of noise at distinct membrane depolarizations. Our analyses unveiled the manifestation of stochastic resonance (detection of the highest number of valid oscillatory traces at an optimal level of noise) in both heterogeneous populations of SC models. Finally, we show that a generalized network motif comprised of a slow negative feedback loop amplified by a fast positive feedback loop manifested stochastic bifurcations and stochastic resonance in the emergence of oscillations. Together, through a unique convergence of the degeneracy and stochastic resonance frameworks, our unifying framework centered on heterogeneous stochastic bifurcations argues for state-dependent emergence of SC oscillations.
Hierarchical unimodal processing within the primary somatosensory cortex during a bimodal detection task
Authors: Parra Sergio , Díaz Héctor , Zainos Antonio , Alvarez Manuel , Zizumbo Jerónimo , Rivera-Yoshida Natsuko , Pujalte Sebastián , Bayones Lucas , Romo Ranulfo , Rossi-Pool Román 
Published: December 2022

Do sensory cortices process more than one sensory modality? To answer these questions, scientists have generated a wide variety of studies at distinct space-time scales in different animal models, and often shown contradictory conclusions. Some conclude that this process occurs in early sensory cortices, but others that this occurs in areas central to sensory cortices. Here, we sought to determine whether sensory neurons process and encode physical stimulus properties of different modalities (tactile and acoustic). For this, we designed a bimodal detection task where the senses of touch and hearing compete from trial to trial. Two Rhesus monkeys performed this novel task, while neural activity was recorded in areas 3b and 1 of the primary somatosensory cortex (S1). We analyzed neurons’ coding properties and variability, organizing them by their receptive field’s position relative to the stimulation zone. Our results indicate that neurons of areas 3b and 1 are unimodal, encoding only the tactile modality in both the firing rate and variability. Moreover, we found that neurons in area 3b carried more information about the periodic stimulus structure than those in area 1, possessed lower response and coding latencies, and had a lower intrinsic time scale. In sum, these differences reveal a hidden processing-based hierarchy. Finally, using a powerful nonlinear dimensionality reduction algorithm, we show that the activity from areas 3b and 1 can be separated, establishing a clear division in the functionality of these two subareas of S1.
Teacher talk in English-medium instruction classes in Japanese universities
Authors: Davila Gilder 
Published: December 2022

Abstract
English-medium instruction (EMI) courses in higher education have increased dramatically over the past decade and Japan is no exception. In the implementation of EMI courses, the role of English and the local language (Japanese) during content education is a subject of debate. The present study analyses EMI teacher talk by looking at aspects such as speech structure, and the role of language during content-education. Twelve undergraduate classes from four academic subjects in Economics, Ethics in Science, Project Planning, and Development Studies (three classes from each subject) were observed and recorded. Transcripts from these classes were analysed using Christie’s (1989) classroom discourse approach of curriculum genre, and Bernstein’s (1996) notion of horizontal and vertical discourses. Research findings revealed that there are similarities in EMI teachers’ classroom speech structure. However, the learning context has an effect on the role of English language which in turn influences content education.
Manoeuvres of dissent in landscapes of annexation
Authors: Volvach Natalia 
Published: December 2022

Abstract
Building on semiotic landscapes research, the present paper seeks to expand the existing field with its
exploration of protest through the lens of turbulence (Stroud, 2015a). While making
visible the fabric of resistance in semiotic landscapes of annexed Crimea, the ethnographic engagement with the interactional and
visual data provides insights into small-scale performative acts of protest. It shows that protest evolves as a manoeuvring act
across a minefield of possibilities and constraints and manifests itself materially and discursively. More specifically, acts of
protest emerge out of an agential intra-action of humans and non-humans, thus revealing the necessity of synergies between people
and objects. Such intra-actions create interpretative ambiguity. Protestors deliberately play on this ambiguity to simultaneously
conceal and to visibilise dissent. Jointly achieved performative acts of protest, if only temporary, create turbulence and
unsettle the status of Crimea as a ‘Russian’ space, thus disturbing the status quo in the area.