bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamics Study of Processes Fracture and Fiber-Reinforced Materials Delamination
Authors: Tamayo-Meza Pedro , Ovchinsky Anatoly S. , Sandoval-Pineda Juan Manuel , Flores-Herrera Luis Armando , González Huerta Rosa de G. 
Published: September 2023

With the construction of a plane model, a qualitative study was made in order to observe the transactions that are developed during the fracture process and its simulation on different sections of a composite, from the accumulation of the damage stage to the moment when the crack propagates abruptly causing a macro fracture. An algorithm was developed to observe the stress redistribution processes and the compound is simulated including packaging defects of the filaments. During the study of the fracture processes in reinforced composites there are many factors to consider that are interrelated and that have a casual character. The mechanical properties of the fibers and the matrix, the matrix-fiber adherence and the resistance of the interface, all vary with the application of the load. The use of computational methods opens great possibilities for the development of the simulation and the models of the fracture processes.
A fault location method applied in power distribution systems based on k-NN classifiers parameterized using genetic algorithms and the reactance estimation
Authors: Zapata-Tapasco Andrés , Pérez-Londoño Sandra , Mora-Flórez Juan 
Published: September 2023

In this paper, a parameterization strategy of a k nearest neighbors (k-NN) based fault locator is described. This technique is complemented by a well validated location method based on the estimation of the fault impedance. This hybrid strategy is validated in a real power distribution feeder, having obtained acceptable results. Finally and as an important advantage of the here proponed methodology, it is remarkable the easy implementation process, considering real distribution feeders (more than 100 nodes).
Electrical energy conversion system design with single-phase inverter and H5 transformerless topology
Authors: González-Morales Luis Gerardo , Colina-Morles Eliezer , Vanegas-Peralta Pablo , Sempertegui-Álvarez Rodrigo Efraín 
Published: September 2023

This paper presents the design of an electrical energy conversion system (EECS) for the use of solar energy and its conditioning for injection of energy to the commercial power grid. A single-phase full-bridge inverter with transformerless H5 topology coupled to an LCL filter is used. The system is identified using an averaged small-signal state space model; while the used cascade control scheme is tuned by pole placement and includes a maximum power disturb-observe tracking type algorithm of that increases efficiency by operating the system at the optimum operating point of the solar panel. This design describes essential technical aspects in the components sizing and selection for experimental development, as well as the control structure design for a good performance to face systems perturbations.
Low complexity demodulator for BFSK waveforms based on polygonal approximation
Authors: Torres-Gómez Jorge , Hernández-Montero Fidel Ernesto , Habermann Joachim 
Published: September 2023

The present article relates in general to digital demodulation of Binary Frequency Shift Keying (BFSK waveform). The objective of the present research is to obtain a new processing method for demodulating BFSK-signals in order to reduce hardware complexity in comparison with other reported. The solution proposed here makes use of the theories of matched filters and curve segmentation. The article describes the integration and configuration of a Sampler Correlator and polygonal segmentation blocks in order to obtain a digital receiver for properly demodulating the signal received. The proposed solution is shown to reduce dramatically the complexity in hardware and has a better performance regarding noise in comparison with other reported. Theoretical details concerning limits of applicability are also given by closed-form expressions. Simulation experiments are illustrated to validate the overall performance.
Food security of Ukraine: national and global level
Authors: Melnyk Tatyana , Tunitska Yuliia , Banas Dmytro 
Published: September 2023

The aim of this paper is to examine the level of food security in Ukraine in comparison to global regions and European countries in the context of the COVID-19 pandemic and the Russian-Ukrainian war. For this purpose a variety of indicators were examined including population dynamics, food balance, FAO indicators and the Global Food Security Index. The results show that in spite of its agricultural potential Ukraine is behind the global and European indicators of food security with the exception of fish products. Barriers to achieving high levels of food security include incomplete legislative reforms, inadequate funding, infrastructure deficiencies, corruption and non-compliance with standards. International cooperation and improved national and regional strategies are needed to overcome the consequences of the war.
Dinamik tiyol-disülfür homeostazisi nodüler guatr ve tiroid kanseri tanısında etkili bir belirteç olabilir mi?
Authors: AYDIN Altan , BULUŞ Hakan , ALIŞIK Murat , EREL Özcan 
Published: September 2023

Amaç: Troid glandı doğası gereği troid patolojilerinde oxidatif stresin rolü önemlidir. Dinamik thiol-disulfit dengesi vücuttaki oksidatif stres ve onun dengeleyicisi antioksidanların göstergelerinden birisidir. Çalışmamızda Troid kanseri veya nodüler guatr nedeniyle opere edilen olgularda Dinamik thiol disulfit dengesi düzeylerini araştırdık.
Gereç ve Yöntemler: Keçiören Eğitim ve Araştırma hastanesi Genel Cerrahi kliniğinde 01.03.2017-01.06.2017 tarihleri arasında tiroidektomi operasyonu olan hastalar çalışmaya dahil edildi. Ameliyat sonrası patoloji sonuçları Benign gelenler Grup1, Malign gelenler Grup 2 ve Ultrasonda patoloji saptanmayan ve ameliyat edilmeyen olgular ise Grup 3 Kontrol grubuna dahil edildi. Çalışma grubundan ameliyat öncesi olmak üzere Dinamik thiol-disulfit dengesinin araştırılması için venöz kan örnekleri alındı.
Bulgular: 98 hastaya bilateral total tiroidektomi ameliyatı uygulandı; bunlardan, 77 hastanın patoloji sonuçları benign, 21 hastanın ise malign rapor edildi. Grup 1(benign), Grup 2 (malign) ve Grup 3 (kontrol) gruplarında sırasıyla Native thiol değerleri (µmol/L) 317.4± 4.2, 349.9± 7.9 , 299.9± 7.9 (p=0), Total Thiol değerleri (µmol/L); 353.5.0±4.8, 386.5±9.5, 332.6± 8.3 (p=0), Disülfit (µmol/L); 18.4 ±0.5 20.5±0.7, 16.7±0.6 (p=0), Disulphide/native thiol 5.8.0±0.1, 5.9±0.2, 5.7± 0.2 (p=0.8), Disulphide/total thiol 5.2±0.1, 5.4±0.2, 5.1± 0.2 (p=0.7) ve Native thiol/total 89.9±0.5, 90.7±0.5, 90.5± 1.5 (p=0.4) olarak saptandı.
Sonuç: Tiroid hastalıkları tanısında Dinamik thiol-disulfit dengesi bir belirteç olarak kullanılabilir ancak geniş serili çalışmalara ihtiyaç duyulmaktadır.
The Summary and Analysis of ‘Domestic Trade Frictions and Agriculture’ Research Paper: A Review
Authors: Yangailo Tryson 
Published: September 2023

This paper assessed the research study carried out by Sebastian Sotelo which is entitled ‘Domestic Trade Frictions and Agriculture’. This paper summarized and analysed the process, steps and approach Sotelo utilised to formulate his model to investigate the association among trade, productivity as well as the welfare in the Peruvian agriculture sector. The paper reviews Sotelo’s paper entitled ‘Domestic Trade Frictions and Agriculture’ by first summarising and then analysing his study. The review finds that Sotelo’s model is academic and not applicable in real life. The weaknesses and gaps identified in Sotelo’s study are highlighted and include: the assumption that agricultural inputs are all imported from other foreign countries which is not the case in some developing countries; the utilisation of quantitative method and secondary data; the reliance on the estimates; the use of data that is outdated in some cases; the utilisation of the condemned trade cost (iceberg) formula; the assumption that farmers are homo economicus which recent studies have proved to be wrong and; application and adoption of constant return to scale which some economists have condemned. This paper concludes and recommends that future studies should take advantage of the identified weaknesses and gaps this paper has identified and then explore further to cover the gaps by employing different research methods.
COVID-19 severity stratification using quantitative computed tomography analysis
Authors: ÇİNKOOĞLU Akın , ESMAT Habib Ahmad , BOZDAĞ Mustafa , BAYRAKTAROĞLU Selen , CEYLAN Naim , SOYLU Mehmet , SAVAŞ Recep 
Published: September 2023

Aim: This study aimed to examine the utility of computer-assisted quantitative assessment of chest
computed tomography (CT) images in the stratification of Coronavirus Disease 2019 (COVID-19)
severity.
Materials and Methods: This study was designed as a retrospective, single-center study and
included a total of 142 RT-PCR-confirmed COVID-19 patients. CT findings were visually evaluated
and noted for their morphology and distribution characteristics. Visual semi-quantitative score (VSS)
and computer-aided quantitative score (CQS) were calculated. The utility of the approach was
assessed based on its ability to predict the patients who would require intensive care.
Results: The presence of underlying fibrosis, air bubble sign, and co-occurrence of central and
peripheral lung area involvement were the CT findings that were significantly more commonly
encountered in patients with intensive care requirements during the follow-up period. We found a
significant positive correlation between total VSS and CQS (p
Delimitação da área de conhecimento científico da educação superior
Authors: Werlang Rodrigo Pivetta , Trevisol Marcio Giusti 
Published: September 2023

Introdução/Objetivo: Este artigo tem por objetivo delimitar o campo do conhecimento científico da área de educação superior nos acervos Capes Periódicos, SciELO e nos anais das reuniões nacionais da ANPEd, entre os anos de 2019 e 2022 com a finalidade de problematizar os temas emergentes tratados pela comunidade científica. A investigação parte da pergunta: quais temas têm pautado as pesquisas na educação superior? Metodologia: Trata-se uma pesquisa qualitativa, exploratória e bibliográfica. Os dados coletados foram analisados e organizados a luz da análise de conteúdo. A coleta dos dados foi realizada no portal Capes Periódicos, SciELO e nos anais das reuniões nacionais da ANPEd entre os anos de 2019 e 2022. Para a coleta foi utilizado como descritor educação superior com e sem aspas. Ao todo foram selecionados 136 artigos, organizados nas seguintes categorias: Estado, políticas públicas e institucionais, Democratização da Educação Superior, Internacionalização, Formação docente e profissional, Pedagogia universitária e Avaliação da Educação Superior. Resultados: Como resultado percebemos que há vasta produção sobre Democratização da Educação Superior, seguido por debates sobre o Estado, políticas públicas e institucionais, questões relativas à Pedagogia universitária, Internacionalização e Formação docente e profissional. O descritor Avaliação da Educação Superior apresentou a menor quantidade de produções neste recorte temporal de 2019 a 2022. Conclusão: Por fim, a investigação apontou para a preocupação da comunidade investigativa com as políticas educacionais para a educação superior adotadas pelo governo brasileiro e os desafios frente as influências do neoliberalismo.
70 Yaş ve Üzeri Erkek Cinsiyette Kemik Mineral Dansitesinin İnsülin Benzeri Büyüme Faktörü 1 ve Estradiol Düzeyleri ile İlişkisi
Authors: ÖNDER Çağatay Emir , YILMAZ Nisbet 
Published: September 2023

Amaç: Osteoporoz düşük kemik kütlesi ve kemiğin mikromimarisinin bozulması ile karakterize bir hastalıktır. Kadınlarda osteoporozun daha sıklıkla görülmesi, erkeklerde göz ardı edilmesine yol açmıştır. Bu çalışmanın amacı, 70 yaş ve üzeri erkek cinsiyette kemik mineral dansitesinin insülin benzeri büyüme faktörü 1 (IGF-1) ve Estradiol düzeyleri ile ilişkisini değerlendirmektir.
Gereç ve Yöntem: Çalışma, 2014-2015 arasında 28 hasta (osteoporoz ve osteopeni) ve 23 kontrol grubu olarak 51 kişi ile yapıldı. Vakaların diyette 3 günlük ortalama kalsiyum alımları ve fiziksel aktivite durumları kaydedildi. Kemik mineral yoğunluğu (KMY), albumine göre düzeltilmiş serum kalsiyum düzeyi (Alb-sCa), fosfor (P), paratiroid hormon (PTH), 25 (OH) D3 vitamini, total testesteron, estradiol (E2), IGF-1 ve 24 saatlik idrar Ca düzeyleri ölçüldü.
Bulgular: Hasta ve kontrol grubu arasında yaş, vücut kitle indeksi (BMI), fiziksel aktivite ile Alb-sCa, P, PTH ve 24 saatlik idrar Ca düzeyleri yönünden fark bulunmazken (p>0.05); kontrol grubunun boy, kilo, 3 günlük ortalama kalsiyum alımları ile 25 (OH) D3 vitamini düzeyi anlamlı olarak yüksekti (p
Secondary Rotator Cuff Insufficiency After Anatomic Total Shoulder Arthroplasty
Authors: Ardebol Javier , Pak Theresa , Kiliç Ali Īhsan , Hwang Simon , Menendez Mariano E. , Denard Patrick J. 
Published: September 2023

» Secondary rotator cuff insufficiency is a challenging complication after anatomic total shoulder arthroplasty.» Acute tears may be amenable to open or arthroscopic repair in some instances.» Chronic attritional tears are best managed with revision to reverse shoulder arthroplasty, especially in the elderly.» Increased glenoid inclination, larger critical shoulder angle, oversized humeral components, thicker glenoid components, and rotator cuff muscle fatty infiltration have all shown to contribute to tear risk.
The Influence of Information Quality and Perceived Value on Purchase Intention of Game shop E-commerce in Generation Z Based on Framing Theory
Authors: Farhan Gusti Muhammad , Marsasi Endy Gunanto 
Published: September 2023

Indonesia's gaming sector is expanding quickly in this day and age, which has an effect on the country's digital market economy. One aspect of Indonesia's expanding gaming sector is online game shops. The purpose of this study was to determine the effect of information quality, social psychological distance, perceived value, and trust on Generation Z customers' purchase intentions in game shop e-commerce. This study uses a quantitative approach by distributing questionnaires. With 260 samples overall, non-probability sampling is the approach used. Structural Equation Modeling (SEM) utilizing AMOS 26 Graphics software is the analytical technique used. The overall conclusions of the study are that social psychological distance has a positive, significant impact on trust and also acts as a mediator between the effects of information quality and trust. Information quality has a significant positive impact on social psychological distance. Information quality influences perceived trust and value in a significant positive way. Identified purchase intention is positively and significantly influenced by trust and perceived value. Trust and perceived value also act as mediators between information quality and purchase intention. The benefits of this research is reported managers of game shop e-commerce companies must increase the development of companies that distribute information with a high level of information quality. In addition, trust in customers and purchase intention impacted readily by the social psychological distance between business people and consumers and how much value consumers feel for the goods and services played by business people.
Biodiversity and Microorganisms Variation of Endemic Duku (Lancium domesticum Corr.) Rhizosphere in the Wet and Dry Main Growing Site in Jambi, Indonesia
Authors: Hayati Islah , Marwan Husda , Wilia Weni 
Published: September 2023

دوكو Duku نباتات متوطنة في مقاطعة جامبي بإندونيسيا. كانت تنتشر وتنمو جيدًا في الطمي على طول ضفاف الأنهار ، لكنها عانت مؤخرًا من تفشي مرض الموت المفاجئ على مدار العقود الماضية. كان هذا الوضع سائدًا منذ الفيضانات المتكررة بسبب استنفاد مناطق الغابات في أعلى المنبع. بما أن السبب هو العفن المائي Phytophthora palmivora ، فقد كان من المفترض أن يحدث مرض الموت المفاجئ في المناطق الرطبة فقط ، ولكن في الواقع ، ينتشر المرض في المناطق الجافة أيضًا. هذه الحقيقة قادتنا للبحث عن عوامل بيولوجية أخرى في التربة بالمحيط الجذري للنباتات في الموائل الرطبة والجافة. أخذت العينات من المحيط الجذري لنباتات دوكو المريضة والصحية في العديد من المناطق الرسوبية لنهر باتانغ هاري التي تمثل الموائل الرطبة والجافة. أشارت الى أن المجتمع الميكروبي في التربة في الموائل الجافة والرطبة هي مجتمعات مايكورايزا (mycorrhiza) والبكتيريا والفطريات. أظهرت الوفرة النسبية للميكروبات في الموائل الجافة والرطبة في النباتات الصحية والمريضة أنواع متنوعة. ففي النباتات الرطبة للصحة ، كانت الوفرة النسبية كالآتي: 33.33 ٪ ٍSclerocytis، و Gigaspora 33.34 ٪ ، و Glomus 33.33 ٪. في النباتات المصابة بالموائل الرطبة ، كانت الوفرة النسبية للمايكورايزا: 66.67 ٪ ٍSclerocytis ، Glomus 33.33 ٪ ، وغياب Gigaspora. تم العثور على مجموعة البكتيريا لتكون الأكبر عند 70،49 ٪ في الموائل الجافة و 72.13 ٪ في الموائل الرطبة. أماالمجموعة الفطرية فكانت 14،08 ٪ في الموائل الجافة و 16.39 ٪ في الموائل الرطبة. أظهرت المايكورايزا أصغر نسبة في جذور نباتات Duku. أظهرت النتائج وجود ارتباط سلبي لل VAM مع النيتروجين ، و والفسفور في المحيط الجذري. أما وجود Glomus sp كان ارتباطه ايجابيا مع بوتاسيوم التربة.
Cristobalite Clinker and Paralavas of Ferroan and Melilite–Nepheline Types in the Khamaryn-Khural–Khiid Combustion Methamorphic Complex, East Mongolia: Formation Conditions and Processes
Authors: Savina E.A. , Peretyazhko I.S. 
Published: September 2023

Abstract—Rock samples from the Khamaryn-Khural–Khiid combustion metamorphic (CM) complex, including cristobalite clinker, ferroan tridymite–sekaninaite and cristobalite–fayalite paralavas, which are rock types new to the complex, as well as clinker xenoliths in melilite–nepheline paralava, have been studied in terms of chemistry and mineralogy. The obtained data on rock-forming, minor, accessory, and rare phases (silica polymorphs, cordierite-group minerals, fayalite, Fe and Ti oxides, ferrosilite, etc.) have implications for the formation conditions and processes of the CM rocks. The Raman spectra of sekaninaite, indialite, ferroindialite, mullite, and anhydrous Fe–Ca–Mn phosphate, presumably from the graftonite group, have several specific features. The diversity of mineral assemblages in the CM rocks is due to heterogeneous lithology of the sedimentary protolith and to local effects in the multistage history of the Khamaryn-Khural–Khiid complex. According to geochemical data, all CM rocks of the complex are derived from the Early Cretaceous Dzunbain Formation, their protolith molten to different degrees. The cristobalite clinker and tridymite–sekaninaite and cristobalite–fayalite paralavas were produced by partial melting of pelitic rocks containing different amounts of iron in a wide temperature range. The formation of mullite developed from dehydration–dehydroxylation and incongruent partial melting of amorphous pelitic matter. Large-scale crystallization of mullite in clinker, occurred from the high-silica potassic aluminosilicate melt at &gt;850 °C. Combustion of subsurface coal seams heated the overburden to &gt;1050 °C or locally to &gt;1300–1400 °C (melting point of detrital quartz) or even, possibly, to &gt;1470 °C corresponding to the stability field of β-cristobalite. Melilite–nepheline paralava was formed by incongruent melting of silicate (pelitic) and carbonate (calcite) components of marly limestone under elevated CO2 partial pressure. Oxygen fugacity (fO2) during combustion metamorphism changed from strongly reducing conditions favorable for crystallization of Fe phosphides (barringerite, schreibersite) and metallic iron from silica-undersaturated melts parental to melilite–nepheline paralava to high fO2 values that can maintain the formation of hematite in Fe-rich CM rocks.
Acute minocycline treatment inhibits microglia activation, reduces infarct volume, and has domain-specific effects on post-ischemic stroke cognition in rats
Authors: Myers Sarah J. , Agapova Victoria , Patel Salonee V. , Hayes Sarah H. , Sposato Luciano A. , Allman Brian L. , Whitehead Shawn N. 
Published: September 2023

Abstract
Ischemic stroke affects millions of individuals worldwide and a high prevalence of survivors experience cognitive deficits. At present, the underlying mechanisms that drive post-stroke cognitive decline are not well understood. Microglia play a critical role in the post-stroke inflammatory response, but experimental studies show that an accumulation of chronically activated microglia can be harmful and associates with cognitive impairment. This study assessed the effect of acute post-stroke minocycline treatment on chronic microglia and astrocyte expression within the infarct and remote white matter regions, as well as its effect on various domains of cognitive function post-stroke. Nine-month-old male rats received an injection of endothelin-1 into the right dorsal striatum to induce transient focal ischemia, and then were treated with minocycline or saline for 4 days post-stroke. Rats were tested using a series of lever-pressing tasks and the Morris water maze to assess striatal-based learning, cognitive flexibility, and spatial learning and reference memory. We found that minocycline-treated rats had smaller stroke-induced infarcts and less microglia activation in the infarct area and remote white matter regions compared to saline-treated rats at 28 days post-stroke. The behavioural testing results differed according to the cognitive domain; whereas minocycline-treated rats trended towards improved striatal-based learning in a lever-pressing task, but cognitive flexibility was unaffected during the subsequent set-shifting task. Furthermore, minocycline treatment unexpectedly impaired spatial learning, yet it did not alter reference memory. Collectively, we show that post-stroke minocycline treatment can reduce chronic microglia activation even in remote brain regions, with domain-specific effects on cognitive function.
Mechanism of Galectin-3 in arteriogenic erectile dysfunction via TLR4/MyD88/NF-κB pathway
Authors: Fu Qinag , wang Guanbo , Li Ruiyu , Feng Chen , Li Kefan , Liu Shuai 
Published: September 2023

Abstract
Galectin-3 (Gal-3), a multifunctional protein, has been linked to fibrosis and inflammation in the cardiovascular system. This study endeavors to examine the impact of Gal-3 on inflammation and fibrosis in arteriogenic erectile dysfunction (A-ED) and the underlying mechanisms. To induce arterial injury, we utilized cuffs on the periaqueductal common iliac arteries of Sprague-Dawley (SD) rats and administered a high-fat diet to co-induce local atherosclerosis. Our results show that we have successfully developed a novel A-ED model that was validated based on histological evidence. In vivo, the vascular lumen of rats subjected to a high-fat diet and cuff placement exhibited significant narrowing, accompanied by upregulation of Gal-3, TLR4, and MyD88 expression in the penile cavernosal. This led to the activation of NF-κB-p65, resulting in reduced intracavernosal pressure, endothelial nitric oxide synthase expression, and smooth muscle content, promoting inflammation and fibrosis. However, treatment with Gal-3 inhibitor-modified citrus pectin (MCP) significantly improved these phenomena. In Vitro, knocking down Gal-3 led to a significant reduction in TLR4, MyD88, and NF-κB-p65 expression in CCSMCs, decreasing inflammation levels. In conclusion, inhibiting Gal-3 may improve A-ED by reducing inflammation, endothelial injury, and fibrosis in the penile corpus cavernosum through the TLR4/MyD88/NF-κB pathway. The findings highlight the potential therapeutic target of Gal-3 in A-ED.