bluuebunny/crossref_metadata_2025_split huggingface dataset:
Congenital cervical teratoma
Authors: Sumarlin Sofi , Suhandr Wiwin 
Published: July 2024

: Teratoma, originating from the Greek word "teras" meaning "monster," reflects its diverse tissue composition, often containing ectodermal, mesodermal, and endodermal tissues. These embryonic germ layers contribute to the rarity of teratomas in the neck, though they are more commonly found in the sacrococcygeal area. Notably, teratomas occurring in the cervical region can lead to life-threatening symptoms due to their mass effect.: A 26-year-old multiparous woman highlighted the challenges of managing cervical teratomas. During her 38th week of gestation, an ultrasound revealed a tumour on the foetus's neck, measuring 5.2 x 4.7 cm with doppler, neovascularization, and solid parts suspected to be a teratoma. The patient, despite no prior illness, had not taken prescribed vitamins during pregnancy. She underwent a caesarean section, delivering a baby girl weighing 3100 grams with an Apgar score of 8, who was found to have a solid mass in the posterior neck. The baby underwent surgery three days later, where 200-gram mass was removed and identified as a mature teratoma through anatomical pathology examination. The successful surgery allowed the mother and baby to return home in good condition.: Teratomas emphasized their diverse nature, with cervical teratomas mostly affecting females and originating from early aberrant germ cells. These tumours, often neuroepithelial, rarely become malignant. Diagnosis involves prenatal ultrasonography, aiding in intervention planning, while postnatal imaging guides surgical approaches.: Congenital teratomas pose challenges in prenatal diagnosis and management, requiring a multidisciplinary approach. Early detection through antenatal imaging, surgical excision, and meticulous follow-up are crucial for optimal outcomes, emphasizing the importance of comprehensive care and collaboration across medical specialties.
Perspectivas acerca do Feedback como Dispositivo para a Permanência na Educação a Distância
Authors: Cofferri Fernanda Fátima , Novello Tanise Paula 
Published: July 2024

A educação a distância é uma modalidade de ensino que tem se consolidado cada vez mais nos diferentes níveis. Assim, problematizar e compreender como acontecem os processos pedagógicos na Educação a Distância (EaD) é emergente. Nesse sentido, o presente artigo apresenta um recorte do amplo escopo que compõem essa modalidade de ensino, focando no feedback como um dispositivo para a permanência dos estudantes. O objetivo é analisar as perspectivas de tutores e professores acerca do feedback como elemento determinante para a permanência estudantil na EaD. Para tanto, a produção dos registros aconteceu durante um curso de formação de tutores de uma universidade federal brasileira em que tutores a distância registraram perspectivas e entendimentos acerca do feedback. Os registros produzidos foram analisados numa perspectiva qualitativa, a partir da Análise de Conteúdo (Bardin, 2011), sendo a discussão reflexiva-teórica organizada em duas seções, uma delas abordou os desafios e potencialidades do feedback, e a outra seção o processo de orientação do professor ao tutor na elaboração de feedback. Por fim, o estudo aponta que, no processo de mediação pedagógica, as ações de professores e tutores são complementares e precisam ser articuladas, especialmente no processo de elaboração do feedback, no alinhamento de critérios avaliativos, objetivos pedagógicos, bem como, as questões que perpassam a disciplina. Tais elementos impactam na interação e no processo formativo dos estudantes, tutores e professores. Assim, o feedback se configura em um elemento determinante para a qualidade e permanência na educação a distância.

Palavras-chave: Educação a distância. feedback. tutor. professor. permanência.
Intensification of production and preparation of high-viscosity oil from the Kokhanivske field for the purpose of bitumen production
Authors: Kondrat Oleksandr R. ,   Ivano-Frankivsk National Technical University of Oil and Gas, Shmuilin Taras V. ,   Ivano-Frankivsk National Technical University of Oil and Gas
Published: July 2024

The existing problems of production, collection and preparation of high-viscosity oils need to be solved by further research and search for effective technologies. The oil of the Kokhanivske field is unique among the fields of Prykarpattia region, which is characterized by a high density of ≈1000 kg/m3, a significant content of asphaltenes, resins up to (45–60% by weight) and sulphur (7%), which is most suitable for the production of the highest quality bitumen. According to the physico-chemical characteristics and composition of the oil of the Kokhanivske field, an analysis of the conformity of this oil to the bituminous group according to the international classification was carried out. It is emphasized that this oil can be an analogue of the raw material from which high-quality bitumen of the Swedish company Nynas are produced. In connection with the above-mentioned physical and chemical properties of the oil from the Kokhanivske field (high density, viscosity asphaltene and resin content, etc.), significant complications arise during its collection and preparation. In order to solve the problem of preparing this type of oil, a technological solution for its preparation with a wave field of different intensity is proposed. In accordance with this technological solution, a laboratory setup was developed to study the effect of a wave field of different intensity on high-viscosity oil of the Kokhanivske field based on the Yutkin effect.
Implementacja projektu systemu monitorowania stanu gazociągów przesyłowych i ich otoczenia
Authors: Timofiejczuk Anna ,   Politechnika Śląska, Rzydzik Sebastian , Holewa-Rataj Jadwiga , Rataj Mateusz , Kastek Mariusz , Pawelski Daniel , Brawata Sebastian , Gawełda Bartosz ,   Politechnika Śląska,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy,   TECHNOVIS Sp. z o.o.,   TECHNOVIS Sp. z o.o.,   VORTEX Sp. z o.o.,   VORTEX Sp. z o.o.
Published: July 2024

Artykuł prezentuje etap implementacji bezinwazyjnego systemu pozwalającego na okresowe monitorowanie szczelności gazociągów i stanu ich otoczenia. System składa się z podsystemu pomiarowego – śmigłowiec załogowy z zamontowanym spektroradiometrem podczerwieni i kamerą światła widzialnego oraz podsystemu informatycznego – serwer obliczeniowy z zainstalowanym oprogramowaniem do przetwarzania zarejestrowanych danych, w tym danych hiperspektralnych. W zakresie integracji systemu pomiarowego ze śmigłowcem zbudowano specjalne podwieszenie, które umożliwia bezpieczne użytkowanie kamery hiperspektralnej, oraz wykonano przewody pozwalające na niezakłóconą wymianę danych pomiędzy kamerą a systemem kontrolno-pomiarowym zamontowanym w kabinie helikoptera. Podwieszenie zostało przetestowane podczas prób w locie w zakresie drgań przekazywanych z układu napędowego helikoptera na układ pomiarowy spektroradiometru. Przeprowadzona analiza w dziedzinie częstotliwości oraz czasu sygnałów przyspieszeń, prędkości i przemieszczeń potwierdziła poprawność wykonanego projektu podwieszenia. W kolejnych testach postanowiono zweryfikować gotowość techniczną systemu pomiarowego. W tym celu wytyczono różne trasy przelotu, z uwzględnieniem ograniczeń toru optycznego spektroradiometru, skonfigurowano oprogramowanie, uwzględniając różne tryby rejestracji danych, a następnie wykonywano loty nad zbudowanym specjalnie dla potrzeb projektu stanowiskiem doświadczalnym, pozwalającym na symulowanie naziemnych i podziemnych wycieków metanu z infrastruktury gazowej. Wielokrotnie wykonane rejestracje danych w zakresach światła podczerwonego i widzialnego pozwoliły zgromadzić materiał badawczy niezbędny do weryfikacji gotowości technicznej systemu pomiarowego, poprawności działania stanowiska doświadczalnego oraz opracowanych algorytmów obliczeniowych. Podsystem informatyczny zbudowany jest ze zintegrowanych modułów obliczeniowych, które pozwalają na przetwarzanie danych hiperspektralnych w zakresie detekcji i kwantyfikacji emisji metanu oraz przetwarzanie obrazów w świetle widzialnym w zakresie klasyfikacji obiektów niedozwolonych, występujących w otoczeniu gazociągów. W kolejnym etapie moduły przeznaczone do przetwarzania zarejestrowanych przez kamerę hiperspektralną danych zostaną poddane testom w warunkach rzeczywistych oraz zostaną zoptymalizowane do postaci funkcjonalnego systemu informatycznego.
Protrusion Study of Through-Silicon-Vias in Dual Anneal-CMP Processes for 3D Integration
Authors: Liu Sheng , Liu Tianjian , Wang Shizhao , Dong Fang , Xi Yang , Zhang Yunpeng , He Tao , Sun Xiang 
Published: July 2024

Abstract

Through-Silicon Via (TSV) technology is extensively utilized to achieve dense 3D integration. It facilitates the vertical electrical interconnection of different layers of integrated circuits, enabling the creation of sophisticated and space-efficient systems that incorporate a variety of functionalities. This work reports a TSV fabrication with dual anneal-CMP processes to explore the influence of annealing and CMP processes on the evolution of TSV-Cu microstructures and the protrusion. The results show that the dual CMP process can effectively reduce protrusion during high temperatures. The Cu protrusion height increased with the elevation of both the annealing temperature and duration. And it shows good consistency under the high temperature annealing, while shows random phenomenon under 250oC annealing. The phase field model related to TSV grain size was established to quantitatively explore the grain morphology distribution and the thermal mechanical behavior. The results show that the strain in Cu is non-uniform, and the degree of plastic deformation for each grain is closely related to its distribution. The quantity of grains within the TSV is the most important factor affecting the protrusion. As the average grain size expands, the prominence of Cu grain protrusions within TSV intensifies, and the anisotropy of the Cu grains becomes more pronounced. The thermal-mechanical behavior strongly depends on the grain orientation near the top of the TSV, which will lead to some TSV protrusion irregularities. This work may open more opportunities to design high performance TSV preparation methods from the viewpoint of dual CMP process.
Oxytocin reduces subjective fear in naturalistic social contexts via enhancing top-down middle cingulate-amygdala regulation and brain-wide connectivity
Authors: Becker Benjamin , Fu Kun , Xu Shuyue , Zhang Zheng , Liu Dan , Xu Ting , Zhang Yuan , Zhou Feng , Zhang Xiaodong , Lan Chunmei , Wang Junjie , Wang Lan , He Jingxian , Kendrick Keith , Biswal Bharat , Liang Zhen , Zhao Weihua 
Published: July 2024

Abstract

Accumulating evidence from animal and human studies suggests a fear-regulating potential of the neuropeptide oxytocin (OT), yet the clinical translation into novel interventions for pathological fear requires a behavioral and neurofunctional characterization under close-to-real life conditions. Here, we combined a naturalistic fMRI-design inducing high and immersive fear experience in social and non-social contexts with a preregistered between-subjects randomized double-blind placebo-controlled intranasal OT trial (24 IU, n\(=\)67 healthy men). OT reduced subjective fear in non-social and social contexts with small or moderate effect sizes, respectively. In the social fear contexts, OT enhanced left middle cingulate cortex (lMCC) activation and its functional connectivity with the contralateral amygdala, with both neural indices significantly and inversely associated with subjective fear following OT. On the network level, OT enhanced communication between the dorsal attention network (DAN) with the fronto-parietal (FPN) and the default-mode network (DMN) as well as on the more fine-grained level brain-wide communication. These findings indicate a fear-reducing potential of OT under naturalistic conditions with pronounced effects in social contexts, highlighting its potential value as a treatment option for disorders characterized by excessive fear in social situations.
Nephroptosis and ureteroinguinal incarcerated hernia mimicking acute appendicitis
Authors: Gergel Michal , Brychta Ivan , Lancz-Klikacova Anita , Mayer Alexander 
Published: July 2024

Abstract

The involvement of kidney, perirenal fat, and ureter is a rare variant of inguinal hernia. We report a case of a 78-year-old man presenting with typical clinical signs of acute appendicitis. Ultrasonography and CT scan revealed ptosis of the right kidney with a major part of the perirenal capsule involved in a large right sided inguinal hernia with acute obstruction of the ureter and urostasis. Acute surgery was performed, involving resection of perirenal fat, liberation, resection, and neoimplantation of the ureter, and hernioplasty. The postoperative period was uneventful. This case illustrates diagnostic unpredictability of acute appendicitis as well as anatomic variety of inguinal hernias.
On a New Taxonomy of Concepts and Conceptual Change: In Search of the Brain's Probabilistic Language of Learning Scientific Concepts
Authors: Li Lin , Zhou George (Guoqiang) 
Published: July 2024

Abstract

Over four decades of conceptual change studies in science education have been based on the assumption that learners come to science classrooms with functionally fixated intuitive ideas. However, it is largely ignored that such pre-instructional conceptions are probabilistic, reflecting some aspects of an idiosyncratic sampling of their experiences and intuitive decision-making. This study foregrounds the probabilistic aspect of international students' intuitive and counterintuitive conceptions when learning pendulum motion. The probability here is rooted in a moving neural time average in the mind for characterizing these students' cognition (sampling and decision-making) and learning processes (resampling and making a new decision). To sharpen the said focus, we would argue that a new taxonomy of physics concepts is needed to save the mathematical identification of the isochrony of pendulum motion. To connect the mathematical core-based taxonomy with reality, we conducted an experimental study to characterising these students' reaction time and error rates in matching the period of a visually presented pendulum, which embodied its mathematical identity: T = 2π√l/g. The reaction times and error rates data have converged on the probabilistic aspects of the students' active learning mechanisms in their mind. The pedagogical implications of such a probabilistic cognitive mechanism have also been discussed.
Identification of Representative Wind Power Fluctuation Patterns for Water Electrolysis Device Stress Testing - A Data Mining Approach
Authors: Choi Kyong Jin , Kim Sanghoon , Kwon Yongchai , Sim Min Kyu 
Published: July 2024

Abstract

Wind power generation is expected to greatly contribute to the future of humanity as a promising source of renewable energy. However, the high variability inherent in wind is a challenge that hinders stable power generation. To utilize wind power as a primary energy source, integration with a polymer electrolyte membrane water electrolysis (PEMWE) system is proposed. Yet, PEMWE is known to suffer from degradation when exposed to input power patterns with high variability. This poses challenges to its commercialization. This necessitates stress testing with various wind power fluctuations during the production process of the devices. This study investigates representative patterns of wind power fluctuation so that these patterns can be used for the stress testing process. We employ data-mining techniques, including the Swing Door Algorithm and k-means clustering, to identify these patterns by analyzing wind power generation data at a 10-second interval. As a result, the five most representative wind power ramps are presented. This study provides practical guidelines for the development process of expensive devices for wind power generation, thereby promoting the active utilization of wind power generation.
Molecular Mechanism of Exogenous Salicylic Acid Manipulates Watermelon Immune System Against Fusarium oxysporum f. sp. niveum Infection
Authors: Yang Kankan , Wang Ruozhong , Fang Yong , Zou Ting , Peng Xiaoyun , Wang Zhiwei , Zhu Feiying 
Published: July 2024

Abstract

Watermelon fusarium wilt is a soil-borne disease that seriously affects watermelon yield and economic benefits. Our previous study found that salicylic acid (SA) plays an essential role in regulating watermelon roots against the Fusarium wilt (FW), but the molecular mechanism is still unclear. Therefore, in this experiment, the molecular mechanism of how SA manipulate watermelon immune system to against FW was explored by transcriptome analysis, combined with chlorophyll fluorescence images, phytohormone content quantification, RT-qPCR verification and promoter prediction analysis. The plant phenotyping and pathway enrichment analyses revealed that exogenous SA activates watermelon plants against Fusarium oxysporum f. sp. niveum (FON) infection at early stage (3 dpi) by inducing other phytohormones and enriching resistance genes to keep the citrate cycle working. Furthermore, DEGS comparison, RT-qPCR verification and promoter sequences analyses demonstrated that the CIPER10, CIMYB59, CIMYB44, CIPYL4, CIAGP31, and CIACO3 genes play significant roles in against FON infection by signal network between SA and abscisic acid (ABA), jasmonic acid (JA), and ethylene (ET). Collectively, the findings suggested that SA manipulate watermelon immune system to maintaining the citrate cycle via activating a phytohormone crosstalk.
The role of circadian rhythm preference in the onset of depression in adolescents
Authors: Liu Daoli , Teng Huimin , Li Hengfen 
Published: July 2024

Abstract

Background:Evening Chronotype (ET) is associated with Major Depressive Disorder (MDD) and dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis. Arginine vasopressin (AVP), in conjunction with CRH, promotes the production of adrenocorticotropic hormone (ACTH), thereby influencing cortisol (COR) secretion.
Objective:To explore biomarkers related to circadian rhythm preference in adolescent patients with depression and to investigate the association between evening chronotype and copeptin levels in adolescents.
Methods:A case-control study was conducted, including 99 adolescent patients diagnosed with depression according to DSM-5 criteria. They were divided into an evening chronotype group (MDD-ET+,n=61) and a non-evening chronotype group (MDD-ET-, n=38) based on the Morning and Evening Questionnaire 5 (MEQ-5). An age-matched control group of 57 individuals was also selected and divided into an evening chronotype group (HC-ET+, n=30) and a non-evening chronotype group (HC-ET-, n=27) based on the MEQ-5 questionnaire. Biological markers such as cortisol (COR), adrenocorticotropic hormone (ACTH), and interleukin-6 (IL-6) were measured using electrochemiluminescence, C-reactive protein (CRP) was measured using immunoturbidimetry, and copeptin was measured using competitive ELISA.
Results:1.The MDD-ET+ group had higher scores for depression, anxiety, and levels of inflammatory factors IL-6 and CRP compared to the MDD-ET- group. No significant difference in copeptin levels was found between the MDD-ET+ and MDD-ET- groups.
2.IL-6 might be a risk factor for evening chronotype depression (P<0.05). In a 2x2 ANCOVA, MDD showed a significant main effect on copeptin levels (F=4.79; P=0.030), but ET did not (F=1.53; P=0.083), nor was there a significant interaction between MDD and ET (F=1.37; P=0.243).
Conclusion:1.Evening chronotype preference is related to the severity of depressive symptoms in adolescents, with IL-6 and CRP potentially mediating the worsening of depression.
Challenging the standard: Clinical consequence of the 4-week X-ray control after ESIN osteosynthesis of forearm fractures in children
Authors: Wegner Erik , Laubach Nora , Schippers Phillip , Schierjott Lotte , Shrotriya Rujuta , Gercek Erol , Drees Philipp , Dietz Sven-Oliver 
Published: July 2024

Abstract

Purpose: The absence of general guidelines for radiographic follow-ups of pediatric diaphyseal forearm fractures treated with ESIN results in an arbitrary array of X-ray examinations. In most pediatric traumatology departments, an X-ray check is carried out 4 weeks after ESIN osteosynthesis of forearm shaft fractures to detect incipient consolidation of the fracture. However, the elevated sensitivity to ionizing radiation requires special precautions in the pediatric populations. To prevent the indiscriminate use of this diagnostic tool it is necessary to assess the consequence of routinely taken X-rays at the 4-week follow-up.
Methods: This retrospective analysis included 219 pediatric patients who had undergone ESIN treatment for a diaphyseal forearm fracture. They completed their follow-up between 2010 and 2018 at the same level one pediatric trauma center. Binary logistic regression was calculated to identify risk factors that are associated with an increased probability of an abnormal X-ray examination or even a change in the postoperative procedure.
Results: Of the 219 pediatric patients included, 12 (5.5 %) patients had aberrant radiographic findings at the 4-week follow-up. The regression showed that the probability of receiving an abnormal radiograph increased significantly as soon as other non-radiological (p = 0.012, OR 14.554) deviations (nRDs) were found. In the group of nRDs, a positive correlation between irregularities in medical history (n = 59) could be demonstrated (p = 0.003, OR = 8.134). Abnormalities in the physical examination (p = 0.193) did not show this correlation. Confounding factors such as gender (p = 0.403) or the age of the children at the time of fracture (p = 0.141) also had no statistically relevant influence. The presence of an nRD also increases the probability of the postoperative procedure to be modified (p < 0.001).
Conclusion: This study provides clear evidence that standardized radiographic follow-up 4 weeks after surgical treatment has no clinical consequences if the course of the fracture is otherwise uneventful. It should be strictly reserved for pediatric patients with a complicated course.
Level of evidence: Level III
Effect of burst spikes on linear and nonlinear signal transmission in spiking neurons
Authors: Schlungbaum Maria , Barayeu Alexandra , Grewe Jan , Benda Jan , Lindner Benjamin 
Published: July 2024

Abstract

We study the impact of bursts on spike statistics and neural signal transmission.We propose a stochastic burst algorithm that is applied to a burst-free spike train and adds a random number of temporally-jittered burst spikes to each spike. This simple algorithm ignores any possible stimulus-dependence of bursting but allows to relate spectra and signal-transmission characteristics of burst-free and burst-endowed spike trains.
By averaging over the various statistical ensembles, we find a frequency-dependent factor connecting the linear and also the second-order susceptibility of the spike trains with and without bursts. The relation between spectra involves an additional frequency-dependent offset. We confirm these relations for the (burst-free) spike trains of a stochastic integrate-and-fire neuron and identify frequency ranges in which the transmission is boosted or diminished by bursting. We then consider bursty spike trains of electroreceptor afferents of weakly electric fish and approach the role of burst spikes as follows. We compare the spectral statistics of the bursty spike train to (i) that of a spike train with burst spikes removed and to (ii) that of the spike train in (i) endowed by bursts according to our algorithm. Significant spectral features are explained by our signal-independent burst algorithm, e.g. the burst-induced boosting of the nonlinear response. A difference is seen in the information transfer for the original bursty spike train and our burst-endowed spike train. Our algorithm is thus helpful to identify different effects of bursting, in particular also those features only captured in a burst-generating dynamical neuron model.