bluuebunny/crossref_metadata_2025_split huggingface dataset:
(How) Does User-Generated Content Impact Content Generated by Professionals? Evidence from Local News
Authors: Sen Ananya , Grad Tom , Ferreira Pedro , Claussen Jörg 
Published: October 2023

Many platforms host user-generated content (UGC) and content developed by professionals side by side. However, thus far, their impact on platform ecosystems has been mostly studied in isolation. In this paper, we use data from a network of 122 local news outlets hosted by an online news platform to study the spillover effects from UGC developed by citizen journalists to the content developed by professional journalists. We use the removal of a status index associated with citizen journalists as an exogenous shock to their supply of UGC to identify these spillover effects. We find that experienced citizen journalists reduce their production of content when this status index is removed. We then find that inexperienced professional journalists increase their output in response to this behavior. However, as a result of these changes, we find a reduction in the overall content hosted by the platform, especially in the case of local news and in more isolated regions. We further show that this is likely to have detrimental effects for the platform. In particular, there is a decline in overall viewership, and the platform may need to hire and pay salaries to more professional journalists to produce enough articles to close the gap left by the departing citizen journalists. Our work contributes to the literature on UGC and online platforms and to the literature on local news. This paper was accepted by D. J. Wu, information systems division. Supplemental Material: The online appendix and data files are available at https://doi.org/10.1287/mnsc.2023.4962 .
Study fischer-tropsch synthesis
Authors: Rodrigues Jocielys Jovelino , Araujo Alfredina dos Santos , Fernandes Filho Antônio , Rodrigues Maria do Socorro Araújo 
Published: October 2023

This work was to evaluate the catalytic properties Ru/Cobalt/SBA-15 catalyst for Fischer-Tropsch synthesis (FTS). The molecular sieve SBA-15 synthesized by hydrothermal method with rice husk ashes (RHA) and with tetraethyl orthosilicate (TEOS). The Ru promoted Co/SBA-15 catalyst was prepared by wet impregnation method and was characterized by X-ray diffraction, X-ray energy dispersion spectrophotometer, N2 adsorption-desorption, temperature-programmed reduction and transmission electron microscopy. The Fischer-Tropsch synthesis using the catalysts were carried out to evaluate the catalysts activities and its effect on FTS product distribution. The synthesis was carried out in a slurry reactor operating at 513 K, 20 atm, CO : H2 molar ratio of 1 : 2. X-ray diffraction showed that the calcined cobalt catalyst did not modify the structure of SBA-15, proving that Co was present under the form of Co3O4 in the catalyst. The addition of cobalt in SBA-15 decreased the specific superficial area of the molecular sieve. By RTP results was found the ranges of temperature reduction typical of iron oxides phases. Fischer-Tropsch synthesis activity and C5+hydrocarbon selectivity increased with the addition of Ru. The increases in activity and selectivity were attributed to the increased number of active sites resulting from higher reducibility and the synergetic effect of Ru and Co. The most interesting fact to be pointed out is that the use of this catalytic system for the catalyst prepared with alternative source of silica and cheap (rice hull ash) showed high selectivity in liquid products, that is, in hydrocarbons with C5+ (88.2% w/w ), higher than the catalyst prepared with conventional silica source.
Clinical Impact of Patient-Prosthesis Mismatch After Aortic Valve Replacement With a Mechanical or Biological Prosthesis
Authors: Matkovic Milos , Aleksic Nemanja , Bilbija Ilija , Antic Ana , Lazovic Jelena Milin , Cubrilo Marko , Milojevic Aleksandar , Zivkovic Igor , Putnik Svetozar 
Published: October 2023

Abstract

Background
Patient-prosthesis mismatch (PPM) may impair functional capacity and survival after aortic valve replacement. This study aimed to investigate the impact of PPM on long-term survival and quality of life after mechanical and biological aortic valve replacement.

Methods
This study included 595 consecutive patients who had undergone isolated aortic valve replacement. Patients were divided into 2 groups according to prosthesis type. The baseline and operative characteristics, survival rates, complications, and quality of life of the groups with and without PPM were compared for up to 6 years. The PPM calculation was performed using the effective orifice area value provided by the manufacturer divided by the patient's body surface area.

Results
The moderate to severe PPM rates were 69.8% and 3.7% after biological and mechanical prosthesis implantation, respectively. Mean survival for patients in the biological group who had PPM was statistically significantly shorter (50.2 months [95% CI, 45.2-55.3]) than for patients in the biological group without PPM (60.1 months [95% CI, 55.7-64.4]; P = .04). In the mechanical prosthesis group, there was no difference in mean survival between the subgroup with PPM (66.6 months [95% CI, 58.3-74.9]) and the subgroup without PPM (64.9 months [95% CI, 62.6-67.2]; P = .50). A quality-of-life questionnaire's scores did not differ between the groups.

Conclusion
Mismatch is common after biological valve implantation and statistically significantly affects long-term survival and quality of life. If the risk of PPM after implantation of a biological prosthesis is suspected, adopting strategies to avoid PPM at the time of surgery is warranted.
Review of EAP Talk
Authors: Wang Chenghao , Zou Bin 
Published: October 2023

Abstract
This technological tool review aims to provide a brief overview of EAP Talk, an artificial intelligence (AI) English speech assessment platform, outlining its various evaluation features, highlighting the advantages of each function, illustrating its potential for academic English teaching and proposing critical evaluations and suggestions for its upgradeable components. More importantly, this review strives to offer a user guide of experimental tools for related empirical research and explores its feasibility for lessening teacher workload and promoting independent learning among students in the age of AI.
Recent advances in photonic crystal based all-optical analog to digital converter: a review
Authors: Parandin Fariborz , Jomour Mohamadreza , Kamarian Reza , Gholipour Morteza , Mahtabi Naser , Askarian Asghar 
Published: October 2023

Abstract
An optical analog to digital converter (OADC) comprises two main components: a nonlinear demultiplexer and an optical encoder. The nonlinear multiplexer converts the continuous input signal into three quantized discrete levels, while the optical encoder generates standard two-bit codes according to the different quantized levels. The optical Kerr effect is used to perform this process. For this purpose, several nonlinear rods that form a ring resonator are placed in the multiplexer. It can be said that their optical behavior can be controlled by light intensity. In this paper, analog to digital photonic crystal converters is investigated. The main purpose of this study is to provide designs that lead to the design of ADCs with high speed, small dimensions, high accuracy, and maximum sampling rate.
Current status and future perspective of natural killer cell therapy for cancer
Authors: Zhao Xiangyu , Lin Minghao , Huang Xiaojun 
Published: October 2023

Abstract
Natural killer (NK) cells possess innate abilities to effectively eliminate cancer cells. However, because of difficulties of proliferation and easy to be induced dysfunction in the setting of cancer post NK cell therapy, the curative effect of NK cell infusion has been constrained and not been widely applicable in clinical practice. The rapid development of biotechnology has promoted the development of NK cell therapy for cancer treatment. In this review, we will provide a comprehensive analysis of the current status and future prospects of NK cell therapy for cancer, focusing on the biological characteristics of NK cells, as well as strategies to enhance their targeting capabilities and overcome tumor immune suppression within the microenvironment.
Controlling coherent perfect absorption via long-range connectivity of defects in three-dimensional zero-index media
Authors: Yan Dongyang , Mei Ran , Li Mingyan , Ma Zhikai , Hang Zhi Hong , Luo Jie 
Published: October 2023

Abstract
Coherent perfect absorption (CPA), as time-reversed lasing, arises from appropriate wave interference within absorbers, offering flexible control over wave absorption. Typically, this control involves tuning the phase difference between two counter-propagating incident beams. Here, we elucidate the critical role of defect connectivity within three-dimensional zero-index media for realizing and controlling CPA. Specifically, the realization of CPA critically depends on the establishment of long-range connectivity of defects in a specific direction. Once the long-range connectivity is established, the CPA exhibits remarkable resilience against defects’ deformation, changes in size and shape of the zero-index media, as well as variations in number and orientation of incident channels. Notably, a minor disruption to this connectivity will result in a complete reduction of absorption to zero, highlighting an ultra-sensitive absorption property in response to connectivity perturbations. Our findings not only unveil a physical mechanism for realizing CPA but also open up promising avenues for advanced CPA control with versatile functionalities.
Nuove miniature del Maestro del Libro d’Ore di Modena e altri frammenti tardogotici lombardi a Torino
Authors: Marzo Alessia 
Published: October 2023

Abstract
Seven unpublished illuminated fragments from the Museo Civico d’Arte Antica in Turin are examined and placed in the context of Lombard Late Gothic book illumination. An antiphonary with Proper and Commons of Saints decorated by the Master of the Modena Book of Hours is partially reconstructed. A miniature depicting the Imago Pietatis is traced back to one of that master’s masterpieces, the Parma Book of Hours. The well-known miniature with Saint John the Baptist is all that survives of a lost Book of Hours closely related to Michelino da Besozzo’s models, while an initial with Saint Augustine is traced back to a lost antiphonary made in Pavia, perhaps to be ascribed to the Master of Laura Bossi around 1485.
Role and mechanism of PVN–sympathetic–adipose circuit in depression and insulin resistance induced by chronic stress
Authors: Wang Jing , Sun Linshan , You Jingjing , Peng Honghai , Yan Haijing , Wang Jiangong , Sun Fengjiao , Cui Minghu , Wang Sanwang , Zhang Zheng , Fan Xueli , Liu Dunjiang , Liu Cuilan , Qiu Changyun , Chen Chao , Xu Zhicheng , Chen Jinbo , Li Wei , Liu Bin 
Published: October 2023

AbstractChronic stress induces depression and insulin resistance, between which there is a bidirectional relationship. However, the mechanisms underlying this comorbidity remain unclear. White adipose tissue (WAT), innervated by sympathetic nerves, serves as a central node in the interorgan crosstalk through adipokines. Abnormal secretion of adipokines is involved in mood disorders and metabolic morbidities. We describe here a brain–sympathetic nerve–adipose circuit originating in the hypothalamic paraventricular nucleus (PVN) with a role in depression and insulin resistance induced by chronic stress. PVN neurons are labelled after inoculation of pseudorabies virus (PRV) into WAT and are activated under restraint stress. Chemogenetic manipulations suggest a role for the PVN in depression and insulin resistance. Chronic stress increases the sympathetic innervation of WAT and downregulates several antidepressant and insulin‐sensitizing adipokines, including leptin, adiponectin, Angptl4 and Sfrp5. Chronic activation of the PVN has similar effects. β‐adrenergic receptors translate sympathetic tone into an adipose response, inducing downregulation of those adipokines and depressive‐like behaviours and insulin resistance. We finally show that AP‐1 has a role in the regulation of adipokine expression under chronic stress.
A new dynamic model of thermal degradation of polymer binary mixes submitted through pyrolysis
Authors: Bellón-Hernández Oscar Alexander , Riscanevo Espitia Diana Yadith , Rodríguez Hernández Ariel Adolfo 
Published: October 2023

This paper shows the validation process of a dynamic model proposed to represent the one-step thermal degradation reaction of individual components in polymer mixtures. It is complicated to model the process of thermal degradation of polymer mixtures inside pyrolysis reactors. Inside the MPW reactor, the distribution of polymeric components in the mixture is shuffled. It occurs high-temperature gradients, and it is difficult to achieve a uniform heat transfer. All these factors make it complicated to predict at all times in the process and each point of the material inside reactor the degradation reactions and the specific presence of hydrocarbon of interest. It is made a comparison between real data provided by TGA of binary mixes of plastic and the result of simulated thermal degradation obtained using a differential equation of the model for thermal degradation of the same plastics. The polymer used in this study were Expanded Polystyrene (EPS) and Low-Density Polyethylene (HDPE). The results of the simulation using the dynamic model proposed were compared to the thermograms of the five samples submitted to TGA tests. The simulation results showed a reasonable degree of approximation with a mean square error of less than 5%. Those results well approximate the loss of mass of the real samples submitted to TGA tests in all the temperature range of the process. Consequently, it is not necessary to segment the process into sub-ranges to look for parameters in each one of them.
Endovascular treatment of distal cerebral aneurysms
Authors: Senko I. V. , Kisilev V. S. , Sosnov A. O. , Perfiliev A. M. , Matveev P. D. , Ivanova P. Yu. , Rzaev D. A. 
Published: October 2023

Background. Due to rare occurrence of distal cerebral aneurysms, there are very few publications devoted to endovascular treatment. Due to current progress in the endovascular surgery, the number of successfully cured patients with distal aneurysms has been increasing recently.Aim. To determine technical capabilities and evaluate results of endovascular treatment of patients with distal intracranial aneurysms.Materials and methods. The work is based on analysis of data of endovascular treatment among 45 patients with distal cerebral aneurysms in two neurosurgical departments of federal medical centers. Of the 45 analyzed cases 30 were without aneurysm rupture and 15 were with rupture.Results. Endovascular treatment of the distal aneurysms made it possible to achieve good treatment results (4–5 points on the Glasgow Outcome Scale (GOS)) in 97.8 % of cases: 5 points on GOS – in 68.9 %, 4 points on GOS – in 28.4 %. One (2.2 %) fatal outcome was obtained. The most frequent methods of embolization were embolization of aneurysm by coils with stent assistance (37.8 %) and installation of a flow-diverter stent (28.9 %). Embolization with only coils (20 %) or occlusion of parent artery (13.3 %) were used less frequently. In 3 out of 6 patients, the occlusion of parent artery was not planned.Conclusion. Development of endovascular surgery and technical capabilities of performing operations in the distal cerebral arteries has made it possible to form a multidisciplinary approach to choosing the optimal method of shutting off the distal aneurysm from the bloodstream, taking into account the modern possibilities of open surgery. This is especially important for patients in serious condition due to ruptured aneurysm.
Choay e o destino da cidade:
Authors: Carneiro Pinto de Magalhães Mario Luis , Brandão Luiz Sergio 
Published: October 2023

Este trabalho aborda a obra de Françoise Choay (1925-), com foco em sua Antologia do Urbanismo de 1965. Apropriada frequentemente de modo manualístico, buscamos evidenciar seu processo de montagem e seleção de “clássicos”. Colocamos em evidência o caráter programático e de manifesto da obra contra os modelos, mas sobretudo seu engajamento em defesa de um fundamento antropológico do construir. Neste intuito fazemos a análise de dois agrupamentos, “pré-urbanismo sem modelo” e “filosofia da cidade”, as apreciações gerais que faz deles Choay e sobre alguns de seus correspondentes autores e os respectivos fragmentos selecionados.
Palavras-Chave: Urbanismo; Historiografia; Biografia
Importância do reconhecimento patrimonial em Caetité: edificações modernas em uma cidade histórica do Alto Sertão Baiano
Authors: Sérgio Neves Ledo Renato , Rosenthal Schlee Andrey 
Published: October 2023

O artigo objetiva discorrer sobre a necessidade de preservação de um conjunto de edifícios erguidos em meados de 1960, e que são reconhecidos como modernos, todos localizados em Caetité, Bahia. A (co)existência, no referido município, de casario colonial e eclético, vinculado à formação inicial da malha urbana, com os bens modernos, requer especial atenção, uma vez que todos são testemunhos de distintos momentos da história local.
Nesse diálogo, entre os tempos e valores históricos, que o trabalho aponta para um possível risco: da rememoração do pretérito perfeito, da amnésia do “pretérito imperfeito”. Se, por um lado, os anos dos barões e coronéis com sua materialidade de outrora fazem-se emoldurados na parede da memória do seu povo, a expressão arquitetônica, na mesma linha do tempo, de momento outro consumado nos anos 1960 e estendido à contemporaneidade, mostra timidamente seu mérito.
É desperto, assim, o pensamento acerca da compreensão da história enquanto processo contínuo que envolve momentos e feitos diversos. Com isso, o trabalho versa que edifícios vinculados à estética modernista, em uma cidade fortemente atrelada à expressão arquitetônica de séculos anteriores, traduzem peculiaridades e estão na posição de serem compreendidos como Patrimônio Cultural.
Breastfeedıng Attitudes of Puerperal Women and Influencing Factors During the COVID-19 Pandemic
Authors: Kaya Odabaş Resmiye , Sökmen Yasemin , Doğru Seren , Taşpınar Ayten 
Published: October 2023

INTRODUCTION:Assessment of mothers’ breastfeeding attitudes during the COVID-19 pandemic can aid healthcare professionals in planning appropriate breastfeeding counseling. The aim of our study is to assess the breastfeeding attitudes of puerperal women during the COVID-19 pandemic and the related factors.METHODS:A cross-sectional study was conducted on 470 postpartum women who delivered in a state hospital in Turkey in 2022. Participants were selected through simple random sampling.RESULTS:The mean score on the Breastfeeding Attitude Evaluation Scale was 101.11 ± 19.79 (scores range from 0 to 184). Factors that positively influenced breastfeeding attitude included initiating breastfeeding in the first hour after birth (p= .043), planning exclusive breastfeeding for the first 6 months (p= .004), intending to breastfeed for 24 months or more (p= .008), giving breast milk as the baby’s first food (p= .017), believing that a COVID-19-infected mother should breastfeed her baby (p= .000), and not separating a COVID-19-positive mother from her baby (p= .014). Conversely, being a primiparous mother (p= .011) and not believing that breast milk protects the baby from COVID-19 (p= .011) negatively impacted the breastfeeding attitude.CONCLUSION:This study found that postpartum women had positive breastfeeding attitudes during the COVID-19 pandemic, and certain factors influenced these attitudes.
Type 2 Myocardial Infarction on the Background of Coronary Vasospasm and Invasive Tactics of Its Diagnosis and Treatment
Authors: Gamayunov D. Yu. , Kalyagin A. N. , Balabina N. M. , Sinkov A. V. , Chujko E. S. , Kiseleva E. R. , Gajnutdinov K. B. , Sorzheev A. V. , Bykov E. O. 
Published: October 2023

Currently, type 2 myocardial infarction is a rather significant problem, both in terms of diagnosis and treatment. Myocardial infarction without obstructive coronary artery damage occurs in 5-10 % of patients with a myocardial infarction. Optimal strategies for the diagnosis and treatment of patients with myocardial damage associated with non-thrombotic mechanisms have not yet been determined. The article describes a clinical observation of type 2 myocardial infarction on the background of vasospasm, as well as diagnostic and therapeutic tactics in this clinical situation. The main provisions: the patient was 22 years old in the cardiology department due to the pain syndrome behind the sternum for the first time in his life and an increase in body temperature to 37.5 C. From anamnesis: active bodybuilding, taking testosterone in injectable form. The electrocardiogram revealed changes in the type of transmural myocardial ischemia without the dynamics characteristic of myocardial infarction. Troponin I (quantitative test) — 2.1 ng/ml at laboratory reference values of 0.010-0.023 ng/ml. A diagnostic search was conducted for myocardial infarction and acute pericarditis. For the purpose of differential diagnosis, coronary angiography was performed, during which dynamic stenosis of the posterior descending artery was revealed. The decision to stent the vessel was not made. Echocardiography revealed areas of local contractility disorders. The data of the examination showed in favor of myocardial infarction without coronary artery obstruction (type 2). Taking into account the absence of occlusive-stenotic lesions of the coronary arteries, the presence of vasospasm, 1 platelet aggregation inhibitor, medium-dose statins, isosorbide dinitrate, calcium channel blocker, angiotensin-converting enzyme inhibitor was prescribed. Conclusion. Invasive tactics made it more likely to diagnose type 2 myocardial infarction and prescribe the most optimal drug therapy.
Evaluation of the Antioxidant, and Antidiabetic Properties of Flavonoids and Isoflavonoids-Rich Extracts of Medicago sativa and Solidago virgaurea
Authors: Paun Gabriela , Neagu Elena , Albu Camelia , Alecu Andreia , Seciu-Grama Ana-Maria , Radu Gabriel-Lucian 
Published: October 2023

The present study evaluated the antioxidant, antidiabetic properties, and biocompatibility of Medicago sativa and Solidago virgaurea extracts enriched in flavonoid and isoflavonoid compounds. The extracts were obtained by accelerated solvent extraction and laser irradiation. Then, nanofiltration was used for the concentration of flavonoid and isoflavonoid compounds from extracts. The extracts were analyzed for antioxidant capacity using DPPH radical scavenging and reducing power methods, while the antidiabetic property was tested by α-amylase and α-glucosidase inhibition and in vitro on a murine insulinoma cell line (β-TC-6). M. sativa obtained by laser irradiation and concentrated by nanofiltration had the highest DPPH• scavenging (IC50 = 105.2±1.1 and reducing power activities (IC50 = 40.98±0.2 µg/mL). M. sativa extracts had higher inhibition on α-amylase (IC50 = 23.9±1.2, respectively 26.8±1.1), while S. virgaurea had the highest α-glucosidase inhibition (9.3±0.9 ?g/mL respectively 8.6±0.7 ?g/mL). The results obtained after evaluating the antidiabetic in vitro activity showed that the treatment with M. sativa and S. virgaurea flavonoid- and isoflavonoid-rich extracts stimulated the insulin secretion of β-TC-6 cells, both under normal conditions as well as in hyperglycemic conditions. This paper argued that M. sativa and S. virgaurea flavonoid-rich and isoflavonoid-rich extracts could be an excellent natural source with promising antidiabetic potential.