bluuebunny/crossref_metadata_2025_split huggingface dataset:
YSZ Termal Bariyer Kaplamanın Elektroforetik Nano-YSZ Kaplama ile Korozyon Direncinin İyileştirilmesi
Authors: ÖZÇELİK Abdulkadir , AVCI Ali , KARABAŞ Muhammet , AKDOĞAN EKER Ayşegül 
Published: May 2023

Termal bariyer kaplamalar başta jet motorları olmak üzere türbinlerde kanatçık, egzoz ve yanma odası duvarı gibi sıcaklığa maruz kalan parçaların korunmasında kullanılmaktadır. Yüksek ısıl dayanımı, düşük ısı iletkenliği, yüksek termal şok dayanımı ve mikro yapısal özelliklerinden dolayı %7-8 itriya ile kararlı hale getirilmiş zirkonyum oksit (YSZ) malzemesi termal bariyer olarak yaygın olarak kullanılmaktadır. Çalışma kapsamında, atmosferik plazma sprey (APS) yöntemi aracılığıyla üretilen YSZ kaplamanın üzerine elektroforetik biriktirme (EPD) yöntemi ile nano-YSZ kaplanmış ve sürekli, yoğun mikro yapı özelliklerine sahip bir seramik katman elde edilmiştir. Üretilen nano kaplamaların üzerine belirli oranda kalsiyum, magnezyum, alüminyum ve silisyum tozları (CMAS) ve V2O5-Na2SO4 tozları konularak 1050 °C’de kutu fırında 6 saat tutularak sırasıyla CMAS ve sıcaklık korozyonu testlerine tabi tutulmuştur. Korozyon sonrası ve öncesi kaplamaların mikro yapıları, yüzey pürüzlülükleri, porozitesi alan emisyonlu taramalı elektron mikroskobu (FESEM) ve taramalı elektrom mikroskobu (SEM) ile incelenmiştir. Enerji Dağılım Spektroskopisi (EDS) analizi sonuçlarına göre nano-YSZ kaplanmış numunelerde korozyon ürünlerinin bağ katmana difüzyonu önemli ölçüde düşürmüştür. X ışınları analizi (XRD) sonuçlarında, itriya (Y2O3) ve V2O5 bileşiğinin reaksiyona girerek YVO4 bileşiği oluşturduğu görülmüştür. Çalışma sonucunda yüzeydeki ve yüzey derinliklerinde çatlak ve porozite miktarları geleneksel termal bariyer kaplamalara kıyasla oldukça düşük çıkmıştır. Yoğun bir katman üretilmiştir, izotermal CMAS ve izotermal sıcak korozyon testleri sonucunda YSZ performansı iyileştirilmiştir.
Evaluación de tres dosis del bioestimulante Quitosana en el cultivo de pepino (Cucumis sativus) en un periodo tardío
Authors: González-Gómez Luis Gustavo , Falcón Rodríguez Alejandro Bernardo , Jiménez María C. , Jiménez L. , Silvente Jordania , Terrero J. C. 
Published: May 2023

Se investigó la efectividad de un bioestimulante producido por el Instituto Nacional de Ciencias Agrícolas, denominado Quitosana, en el cultivo de pepino, Cucumis sativus. Se seleccionó un cantero por tratamiento como unidad experimental con una población de 207 plantas, sembrada a doble hileras en canteros con 30 cm de separación, la variedad utilizada fue la SS-5, aplicándose la sustancia bioactiva Quitosana, la cual se aplicó de manera foliar en las primeras horas de la mañana a los 10 días después de la germinación de las semillas. La propagación de cultivo se hizo a través de siembra directa. El experimento contó con 4 tratamientos consistente en tres dosis y un control, se evaluaron diferentes parámetros reproductivos del cultivo del pepino en el momento de la primera cosecha arribando a importantes conclusiones sobre el efecto de las dosis evaluados en el crecimiento y desarrollo del cultivo.
Efectos del ozono troposférico sobre cultivos de ajo, Allium sativum y tabaco, Nicotiana tabacum en Cuba
Authors: Andreu Rodríguez Carlos Manuel , Cupull Santana René , Pérez Padrón Gilberto , Morales Gómez Yolanda 
Published: May 2023

En los últimos años se incrementaron los daños en el ajo (Allium sativum, Liliaceae) y el tabaco (Nicotiana tabacum, Solanaceae), presumiblemente por causa del ozono troposférico (O3) en Cuba. Los síntomas en las hojas de estos cultivos causan grandes pérdidas económicas, por lo que el objetivo de este trabajo fue el de caracterizar los efectos del gas contaminante sobre estas especies de importancia en la agricultura. Los resultados de la reseña indicaron que en las condiciones de Cuba, la incidencia de O3 es alta entre los meses de Diciembre y Febrero y la sintomatología típica consistió en manchas y tizón foliar pudiendo causar la muerte de las plantas afectadas.
Pemetaan Akuifer di Kelurahan Bakunase Kecamatan Kota Raja Kota Kupang dengan Metode Geolistrik Resistivitas
Authors: Theon Desi , Adelia Kadek A.C , Maubana Wenti M 
Published: May 2023

Telah dilakukan pemetaan akuifer di Kelurahan Bakunase Kecamatan Kota Raja Kota Kupang dengan metode geolistrik resistivitas konfigurasi schlumberger. Penelitian bertujuan untuk mengetahui nilai resistivitas lapisan penyusun batuan di bawah permukaan dan mengetahui struktur bawah permukaan di daerah penelitian pada semua lintasan. Interpretasi menggunakan software res2dinv dengan hasil interpretasi perlapisan batuan daerah penelitian terdiri dari lapisan lempung, alluvium dan gamping yang tersebar pada semua lintasan pengukuran. Berdasarkan lapisan batuan pada lokasi penelitian, batuan yang dianggap sebagai akuifer dangkal yaitu batuan alluvium yang terdapat pada kisaran kedalaman (6-13.4) m, dengan nilai resistivitas (38.2-65) ?m yang tersebar di lokasi pengukuran.
Penentuan Konsentrasi Sulfat Dalam Air di Kelurahan Oeba Menggunakan Spektrotometer UV-VIS
Authors: Lesik Christian , Boimau Yanti , A.C Adelia Kadek 
Published: May 2023

Telah dilakukan penelitian konsentrasi sulfat yang terkandung dalam air di Kelurahan Oeba. Penelitian ini dibatasi pada tiga lokasi yakni Sumur Tedens, Bak Penampung dan Sumur Penduduk. Sampel air dari ketiga lokasi tersebut kemudian dianalisa dengan menggunakan Spektrofotometer UV-Vis dengan metode turbiditas. Sebelum sampel dianalisa, terlebih dahulu dibuat larutan standar sulfat dengan konsentrasi 5ppm, 10ppm, 15ppm, 20ppm, dan 25ppm. Output serapan baik untuk larutan standar dan larutan sampel kemudian digunakan untuk memperoleh konsentrasi sulfat dalam air sampel berdasarkan persamaan regresi yang secara otomatis muncul dalam output. Berdasarkan perhitungan maka didapat konsentrasi sulfat 15,09ppm, 20,45ppm, dan 106,12ppm masing-masing untuk sampel air di Sumur Tedens, Bak penampung dan Sumur Penduduk.
Proteomic analysis shows decreased type I fibers and ectopic fat accumulation in skeletal muscle from women with PCOS
Authors: Stener-Victorin Elisabet , Eriksson Gustaw , Mohan Shrestha Man , Rodriguez Paris Valentina , Lu Haojiang , Banks Jasmine , Samad Manisha , Perian Charlène , Jude Baptiste , Engman Viktor , Boi Roberto , Nilsson Emma , Ling Charlotte , Nyström Jenny , Wernstedt Asterholm Ingrid , Turner Nigel , Lanner Johanna , Benrick Anna 
Published: May 2023

Background:Polycystic ovary syndrome’s (PCOS) main feature is hyperandrogenism, which is linked to a higher risk of metabolic disorders. Gene expression analyses in adipose tissue and skeletal muscle reveal dysregulated metabolic pathways in women with PCOS, but these differences do not necessarily lead to changes in protein levels and biological function.Methods:To advance our understanding of the molecular alterations in PCOS, we performed global proteomic and phosphorylation site analysis using tandem mass spectrometry, and analyzed gene expression and methylation. Adipose tissue and skeletal muscle were collected at baseline from 10 women with and without PCOS, and in women with PCOS after 5 weeks of treatment with electrical stimulation.Results:Perilipin-1, a protein that typically coats the surface of lipid droplets in adipocytes, was increased whereas proteins involved in muscle contraction and type I muscle fiber function were downregulated in PCOS muscle. Proteins in the thick and thin filaments had many altered phosphorylation sites, indicating differences in protein activity and function. A mouse model was used to corroborate that androgen exposure leads to a shift in muscle fiber type in controls but not in skeletal muscle-specific androgen receptor knockout mice. The upregulated proteins in muscle post treatment were enriched in pathways involved in extracellular matrix organization and wound healing, which may reflect a protective adaptation to repeated contractions and tissue damage due to needling. A similar, albeit less pronounced, upregulation in extracellular matrix organization pathways was also seen in adipose tissue.Conclusions:Our results suggest that hyperandrogenic women with PCOS have higher levels of extra-myocellular lipids and fewer oxidative insulin-sensitive type I muscle fibers. These could be key factors leading to insulin resistance in PCOS muscle while electric stimulation-induced tissue remodeling may be protective.Funding:Swedish Research Council (2020-02485, 2022-00550, 2020-01463), Novo Nordisk Foundation (NNF22OC0072904), and IngaBritt and Arne Lundberg Foundation. Clinical trial number NTC01457209.
Takayasu's Arteritis with Aortic Insufficiency as Initial Presentation: A Case Report
Authors: Tahir A. Fadoul , Badaoui K. , Boucetta A. , Abouradi S. , Assklou A. , Haboub M. , Arous S. , Bennouna M. G. , Drighil A. , Azzouzi L. , Habbal R. 
Published: May 2023

Takayasu's disease is the first cause of inflammatory aortitis in young subjects. The disease preferentially affects the women. Takayasu's disease could be a mode of non-specific reaction of the aorta to various infectious or dysimmune etiological factors. Aortic insufficiency is present in 7 to 10% of cases. It is usually moderate. Its mechanism is not unambiguous: direct damage to the aortic valves or dilation of the aortic annulus. Coronary damage responsible for angina or even myocardial infarction are also possible. We report the case of a severe aortic insufficiency secondary to takayasu disease complicated by acute coronary syndrome in a 42-year-old woman.
Non-Wood Forest Products: History and State in Circular-Bioeconomy of Bulgaria
Authors: Stoyanov Todor 
Published: May 2023

This work examine the inclusion of NWFR and their role in the country's economy.
Data from the annual reports of the Ministry of Agriculture and Food (MAF) and the Forestry Executive Agency (FEA), from the National Statistical Institute (NSI), statistics from the UN (Comtrade), from Eurostat and other sources of information (scientific studies, FAO publications, etc.) are used.
In Bulgaria, the organized collection and use of NWFP has been a livelihood for many people for more than a century. Тhe paper analyzed utilization of the most important NWFP harvested from the forests in the period 2001-2022 and their participation in the national and international trades.
The brief review of the state and trends in the use of NWFP shows that Bulgaria there is a tendency of a permanent decrease in the use and income from NWFP in forestry during the period 2001 - 2022.
At the same time there are significant reserves of unused NWFR, which indicates that there is a great opportunity to expand the use of NWFR and to increase the income of the forestry enterprises.
Considering the potential and problems of the forest sector in Bulgaria, it is clear that the domestic demand and international markets of some NWFP (medicinal plants, wild mushrooms, some kinds of forest fruits, etc.) represent a significant opportunity for the forest bioeconomy and offer a chance for improving the supply of NWFP and supporting income generation in rural areas.
The production of advanced products and materials on a biological basis with high value and the utilization of the hidden potential of NWFP represent key opportunities for the development of the bioeconomy in Bulgaria.
Multidimensional Sleep Health Prior to SARS-CoV-2 Infection and Risk of Post–COVID-19 Condition
Authors: Wang Siwen , Huang Tianyi , Weisskopf Marc G. , Kang Jae H. , Chavarro Jorge E. , Roberts Andrea L. 
Published: May 2023

ImportanceThe association of multiple healthy sleep dimensions with post–COVID-19 condition (PCC), also known as long COVID, has not been investigated.ObjectiveTo examine whether multidimensional sleep health before and during the COVID-19 pandemic, prior to SARS-CoV-2 infection, was associated with the risk of PCC.Design, Setting, and ParticipantsThis prospective cohort study (2015-2021) included Nurses’ Health Study II participants who reported testing positive (n = 2303) for SARS-CoV-2 infection in a substudy series of COVID-19–related surveys (n = 32 249) between April 2020 and November 2021. After exclusion for incomplete information about sleep health and nonresponse to a question about PCC, 1979 women were included in the analysis.ExposuresSleep health was measured both before (June 1, 2015, to May 31, 2017) and early (April 1 to August 31, 2020) in the COVID-19 pandemic. Prepandemic sleep score was defined according to 5 dimensions: morning chronotype (assessed in 2015), 7 to 8 hours of sleep per day, low insomnia symptoms, no snoring, and no frequent daytime dysfunction (all assessed in 2017). On the first COVID-19 substudy survey (returned between April and August 2020), average daily sleep duration and sleep quality for the past 7 days were queried.Main Outcomes and MeasuresSARS-CoV-2 infection and PCC (≥4 weeks of symptoms) were self-reported during 1 year of follow-up. Comparisons were examined between June 8, 2022, and January 9, 2023, using Poisson regression models.ResultsOf the 1979 participants reporting SARS-CoV-2 infection (mean [SD] age, 64.7 [4.6] years; 1979 [100%] female; and 1924 [97.2%] White vs 55 [2.8%] other races and ethnicities), 845 (42.7%) were frontline health care workers, and 870 (44.0%) developed PCC. Compared with women who had a prepandemic sleep score of 0 or 1 (least healthy), those who scored 5 (most healthy) had a 30% lower risk of developing PCC (multivariable-adjusted relative risk, 0.70; 95% CI, 0.52-0.94; P for trend &amp;lt;.001). Associations did not differ by health care worker status. No or little daytime dysfunction prepandemic and good sleep quality during the pandemic were independently associated with a lower risk of PCC (relative risk, 0.83 [95% CI, 0.71-0.98] and 0.82 [95% CI, 0.69-0.99], respectively). Results were similar when PCC was defined as having 8 or more weeks of symptoms or as having ongoing symptoms at the time of PCC assessment.Conclusions and RelevanceThe findings indicate that healthy sleep measured prior to SARS-CoV-2 infection, both before and during the COVID-19 pandemic, may be protective against PCC. Future research should investigate whether interventions on sleep health may prevent PCC or improve PCC symptoms.
Precise Strain Tuning Boosts Electrocatalytic Hydrogen Generation
Authors: Guo Hongyu , Li Lu , Chen Yan , Zhang Wenshu , Shang Changshuai , Cao Xiaoqing , Li Menggang , Zhang Qinghua , Tan Hao , Nie Yan , Gu Lin , Guo Shaojun 
Published: May 2023

AbstractStrain engineering has been utilized as an effective approach to regulate the binding of reaction intermediates and modify catalytic behavior on noble metal nanocatalysts. However, the continuous, precise control of strain for a depiction of strain‐activity correlation remains a challenge. Herein, Pd‐based nanooctahedrons coated with two Ir overlayers are constructed, and subject to different postsynthetic treatments to alter the amount of H intercalated into Pd core for achieving three different surface strains (o‐Pd/Ir‐1.2%, o‐Pd/Ir‐1.7%, and o‐Pd/Ir‐2.1% NPs). It is demonstrated that the catalytic performances of o‐Pd/Ir NPs display a volcano‐shaped curve against strains toward the hydrogen evolution reaction (HER). Specifically, o‐Pd/Ir‐1.7% NPs exhibit superior catalytic performance with a mass activity of 9.38 A mgIr−1 at −0.02 V versus reversible hydrogen electrode, 10.8‐ and 18.8‐fold higher than those of commercial Pt/C and Ir/C, respectively, making it one of the most active HER electrocatalysts reported to date. Density function theory calculations verify that the moderate tensile strain on Ir(111) surfaces plays a pivotal role in optimizing the H binding energy. This work highlights a new strategy for precise control over the surface strain of nanocrystals for more efficient electrocatalysis.
Collagen Fibril Orientation Instructs Fibroblast Differentiation Via Cell Contractility
Authors: Sapudom Jiranuwat , Karaman Shaza , Quartey Brian Chesney , Mohamed Walaa Kamal Eldin , Mahtani Nick , Garcia‐Sabaté Anna , Teo Jeremy 
Published: May 2023

AbstractCollagen alignment is one of the key microarchitectural signatures of many pathological conditions, including scarring and fibrosis. Investigating how collagen alignment modulates cellular functions will pave the way for understanding tissue scarring and regeneration and new therapeutic strategies. However, current approaches for the fabrication of three‐dimensional (3D) aligned collagen matrices are low‐throughput and require special devices. To overcome these limitations, a simple approach to reconstitute homogeneous 3D collagen matrices with adjustable degree of fibril alignment using 3D printed inclined surfaces is developed. By characterizing the mechanical properties of reconstituted matrices, it is found that the elastic modulus of collagen matrices is enhanced with an increase in the alignment degree. The reconstituted matrices are used to study fibroblast behavior to reveal the progression of scar formation where a gradual enhancement of collagen alignment can be observed. It is found that matrices with aligned fibrils trigger fibroblast differentiation into myofibroblasts via cell contractility, while collagen stiffening through a crosslinker does not. The results suggest the impact of collagen fibril organization on the regulation of fibroblast differentiation. Overall, this approach to reconstitute 3D collagen matrices with fibril alignment opens opportunities for biomimetic pathological‐relevant tissue in vitro, which can be applied for other biomedical research.
Naloxone training and availability in the US commercial fishing industry
Authors: Bellantoni Jenna M. , Bulzacchelli Maria T. , Orchard Dan , Sulman Heidi Bruggink , Bartlett J. J. , Dzugan Jerry 
Published: May 2023

AbstractIntroductionWorkers in physically demanding jobs with high injury rates, long hours, productivity pressures, and lack of job security, such as commercial fishing, are at higher risk for substance use and misuse. In the United States, the federal government is urging employers to consider having naloxone available to reverse the effects of an opioid overdose, especially in workplaces. This study examined naloxone training, naloxone availability, and level of concern over substance use in commercial fishing.MethodsAs part of a larger study of commercial fishing vessel captains, we asked participants how worried they are about various potential problems, including substance use by crew members, using a five‐point scale. We also asked whether they had completed naloxone training and whether their vessel was equipped with naloxone.ResultsOf the 61 vessel captains who participated, 10 had naloxone training. Most were “not at all worried” about a crew member misusing alcohol (n = 52; 85.2%), a crew member using marijuana (n = 50; 82.0%), a crew member using other drugs (n = 49; 80.3%), or a crew member having a drug overdose (n = 52; 86.7%). Only five fishing vessels were equipped with naloxone.ConclusionOur results indicate that few fishing vessels are equipped with naloxone or have captains trained in its use. Fishing captains tend not to be worried about substance use in their crew. Given the higher rate of overdose deaths in the fishing industry compared to other industries, having more vessels equipped with naloxone and captains trained to administer it could save lives.
Neurodevelopmental and other psychiatric disorders in 22q11.2 deletion syndrome from childhood to adult age: Prospective longitudinal study of 100 individuals
Authors: Wallin Lena , Gillberg Christopher , Fernell Elisabeth , Gillberg Carina , Billstedt Eva 
Published: May 2023

AbstractThe 22q11.2 deletion syndrome (22q11.2DS), affects physical as well as cognitive and emotional functioning with increased risk for psychiatric and behavioral problems. This longitudinal study of 79 individuals (18–50 years) with 22q11.2DS investigated neurodevelopmental (NDD) and psychiatric disorders in adulthood, evaluated the stability of childhood diagnoses over time, and examined associations between clinical characteristics in childhood/adolescence and diagnostic outcome in adult age. Examination using validated instruments for cognitive, psychiatric, and global functional problems in the context of an in‐depth clinical evaluation found adult age stability of NDD diagnoses made in childhood, however, rates increased at follow‐up. Rates of anxiety, mood, and psychotic disorders were high, with a majority meeting diagnostic criteria for one or more psychiatric disorder. The rate of psychotic disorders was much lower compared to many other studies. Variability in functioning at follow‐up was primarily associated with intellectual ability at T1. The findings obtained highlight the increased risk of NDD and psychiatric problems and of cognitive impairment and reduced levels of global functioning over time. Results emphasize the importance of clinical follow‐up to enable appropriate support for the promotion of optimal health along with a need for future research on effective interventions and treatment strategies.
β‐Arylation of Racemic Secondary Benzylic Alcohols to Access Enantioenriched β‐Arylated Alcohols
Authors: Miao Wang , Zhang Jinyu , Yang Yanyan , Tang Weijun , Xue Dong , Xiao Jianliang , Sun Huaming , Wang Chao 
Published: May 2023

AbstractThe transformation of alcohols into value‐added products is of great importance, as simple alcohols are widespread and can be easily derived from both fossil fuels and biomass. The selective functionalization of a sp3 C−H bond on the alkyl side chain of an alcohol over its hydroxyl group would offer an expedient route to expand the chemical space of alcohols but it remains a challenging task. Harnessing the borrowing hydrogen strategy, the β‐arylation of secondary alcohols with aryl bromides has been achieved in this study, which allows for the selective functionalization of a β‐Csp3−H bond in an alcohol substrate. Under the catalysis of a Pd complex, secondary alcohols reacted with aryl bromides to afford 1,2‐diaryl alcohols with broad substrate scope in the presence of a ketone additive. Furthermore, the enantioconvergent version of the reaction has also been realized, transforming racemic secondary alcohols into enantioenriched chiral 1,2‐diaryl alcohols under the cooperative Pd and Ru catalysis. Mechanism studies indicate that the reactions are enabled by borrowing hydrogen catalysis.
An Asynchronous Concerted Mechanism and Its Origin in Lewis Acid‐Mediated Carbonyl‐Olefin [2+2] Cycloaddition
Authors: Li Yan‐Yu , Zhang Shuo‐Qing , Hong Xin 
Published: May 2023

AbstractThe concerted mechanism of thermal BBr3‐mediated [2+2] carbonyl‐olefin cycloaddition is intriguing considering the conflict against the Woodward–Hoffmann rule. In this work, we report a mechanistic study of the titled reaction using density functional theory calculations. The concerted [2+2] cycloaddition mechanism is operative even for the truncated model system of 2‐methyl‐2‐butene and butanone. Intrinsic reaction coordinate analysis and potential surface mapping showed the asynchronous nature of the apparent concerted [2+2] cycloaddition, resulting from the proximity of carbocation‐oxyanion in the transient zwitterionic structure. Solvent effects can change the reaction to a stepwise mechanism, highlighting the importance of zwitterion stability. Building upon this finding of the asynchronous concerted or stepwise [2+2] cycloaddition mechanism, two mechanistic classifications were elaborated based on substrates containing varied substituents and Lewis acids, with a focus on manipulating the stability of positive carbocation and negative oxyanion in the transient zwitterionic species.