bluuebunny/crossref_metadata_2025_split huggingface dataset:
ІMPACT OF THE NATURE OF ELECTRICALLY CONDUCTIVE IMPURITY ON CAPACITIVE PROPER­TIES AND RESISTANCE TO CURRENT LOADS OF CATHODE MATERIALS BASED ON LiMn2O4
Authors: Panteleimonov Radyslav , Pershina Katherine , Shmatok Yurii 
Published: July 2023

The impact of the nature of electrically conductive graphite and graphene admixtures in spinel LiMn2O4 with different degrees of dispersion, composition and morphology on the surface element distribution and the cycling ability under current loads from 0.5 to 8 C of composite cathode materials based on such spinels have been studied by the methods of electron microscopy, X-ray spectrometry, the BET method and galvanostatic-potentiostatic cycling. The specific surface of graphene structures was studied, which was 23 m2/g for G-N and 27.7 m2/g for G-H2O, and the porosity was about 100 nm for the above samples. It was established that the degree of dispersion of spinel affects not only the morphology of the surface of the electrodes, but also the distribution of elements, primarily manganese and oxygen, which take part in electrode redox reactions, as well as the content of the carbon component. Using the elemental analysis of the component composition of the surface, the ratio of manganese to oxygen was calculated, and it was shown that in samples with graphite, manganese is in a more reduced state, and the maximum oxidized state of manganese is observed in samples with graphene, which was synthesized from an aqueous medium. In the case of finely dispersed spinel, the dependence of the carbon content and the ratio of manganese to oxygen on the surface has an antibate character relative to samples with coarsely dispersed spinel and correlates with the number of meso­pores on the surface. The dependence of the degree of dispersion and the oxidation state of manganese is in good agreement with the dependence of specific capacity on the discharge current density for composite electrodes. In XDM spinel with graphene synthesized from an aqueous medium, the obtained capacitive characteristics exceed the other characteristics of the materials by 20%. It has been experimentally proven that by changing the nature of the impurity and the degree of dispersion of the spinel, it is possible to adjust the capacitive properties and resistance to current loads of composite electrodes.
Students' Use of YouTube to Practice Speaking Skills
Authors: Khoirina Elmi , Pebrihani Netanya , Novitasari Shaffa 
Published: July 2023

ABSTRACT
The objective of this research is that the researchers want to find out how students of the English Education Study Program at the University of Palangka Raya use YouTube as a learning medium to learn speaking practically and independently. This is because currently technology has developed rapidly. Many people take advantage of technology in educational life. Youtube is one of the media that has recently been widely used for various things, one of which is in the scope of education. This research is a descriptive qualitative research design that uses a survey as a case study. The subjects of this study are English Education students at University of Palangka Raya in academic year 2022/2023. There are six steps to conduct research using surveys. Those are planning and ensuring main questions, determining population, determining samples, contracting the research instrument, conducting the survey, and analyzing research data. The research data was analyzed qualitatively. The survey results stated that the majority of respondents said that they used Youtube to practice speaking skills such as grammar, pronunciation, vocabulary, facial expressions, intonation, and fluency. This researche can be concluded that the use of Youtube as a learning media in speaking class can help students to improve their speaking skills.
Keywords: Students’ Use of Youtube, Youtube, Speaking Skills, Qualitative research, Survey, Case Study
The importance of cytoplasmic strings during early human embryonic development
Authors: Joo Kata , Nemes Annamaria , Dudas Beata , Berkes-Bara Eva , Murber Akos , Urbancsek Janos , Fancsovits Peter 
Published: July 2023

Objectives: During human in vitro fertilisation (IVF) treatments, embryologists attempt to select the most viable embryos for embryo transfer (ET). Previously, embryos were evaluated based on light microscopic morphological parameters. However, this is currently accomplished by morphokinetic analysis of time-lapse recordings. This technique provides us the opportunity to observe cytoplasmic strings at the blastocyst stage. The aim of this work was to examine the relationship between the presence of cytoplasmic strings (CS) and the embryo viability in human in vitro fertilised embryos.Study design: Herein, we present an evaluation of the morphokinetic data on the development of embryos obtained during IVF treatments performed at the Division of Assisted Reproduction between December 2020 and March 2021. The dynamics of embryo development, embryo morphology, and morphokinetic scores generated by a time-lapse system were compared between the presence of cytoplasmic strings (CS+) and their absence (CS-) at the blastocyst stage.Results: The development of 208 embryos from 78 patients was examined. Moreover, 81.2% of the embryos had CS in the blastocyst stage; 77% of CS existed in embryos created by conventional IVF, while 86% of CS existed in embryos fertilised by intracytoplasmic sperm injection (ICSI) (p = 0.08). A greater number of CS+ embryos developed into a higher quality blastocyst (52.1% vs. 20.5%, p = 0.02). The morphokinetic score values characterising the development of embryos, such as Known Implantation Data Score (KIDScore) and Intelligent Data Analysis (iDAScore), were higher in CS+ groups (KID: 6.1 ± 2.1 vs. 4.7 ± 2.07; iDA: 8.0 ± 1.9 vs. 6.8 ± 2.3, p &lt; 0.01). The dynamics of the early embryo development were similar between the two groups; however, CS+ embryos reached the blastocyst stage significantly earlier (tB: 103.9 h vs. tB: 107.6 h; p = 0.001).Conclusion: Based on our results, the number of embryos with cytoplasmic strings was higher than that without cytoplasmic strings, and its presence is not related to the fertilisation method. These embryos reached the blastocyst stage earlier, and their morphokinetic (KIDScore and iDAScore) parameters were better. All these results suggest that the presence of CS indicates higher embryo viability. The examination of this feature may help us make decisions about the embryos with higher implantation potential.
Determination of the major axis direction and macroseismic epicenter of the assessed intensity map based on relocated aftershock sequences
Authors: Xu Zhishuang , Liu Jie , Yalikun Alimujiang , Li Xiaoli , Ren Jing , Wen Xintao 
Published: July 2023

The rapid assessment of an intensity map following a strong earthquake forms the foundation for risk assessment and emergency response in Chinese mainland. The determination of the major axis direction in the assessed intensity map depends on various factors, including nearby active faults, instrumental intensities, and the distribution of aftershocks. To evaluate the effectiveness of promptly determining the major axis direction based on early aftershock distribution, we relocated and analyzed aftershock sequences occurring within 2 h of eighteen aftershock-rich earthquakes with a magnitude of Ms ≥ 6.0 in Chinese mainland from 2012 to 2021. HypoDD was used for relocation, and the standard deviational ellipse fitting technique was employed for analysis. Comparing the aftershock ellipses resulting from our analysis with the macroseismic intensity maps obtained from field surveys reveals a high level of agreement, with an average difference of approximately 9° in the major axis directions of the aftershock ellipses and the meizoseismal zones. For the majority of earthquakes, regardless of focal mechanisms, the lengths of the major axes of the aftershock ellipses closely correspond to the intensity VIII scale. Additionally, the spatial distribution of aftershocks aids in distinguishing the seismogenic fault from the two fault planes with distinctly different dips as indicated by the focal mechanism solution. Moreover, the distance between the aftershock center and the macroseismic epicenter systematically increases as the dip decreases. These findings hold significant scientific value as they contribute to the prompt determination of assessed intensity maps and provide effective guidance for earthquake emergency response.
Fibroblast growth factor-23 and cardiovascular disease among prevalent hemodialysis patients focusing on residual kidney function
Authors: Kee Youn Kyung , Jeon Hee Jung , Oh Jieun , Cho Ajin , Lee Young-Ki , Yoon Jong-Woo , Kim Hyunsuk , Yoo Tae-Hyun , Shin Dong Ho 
Published: July 2023

BackgroundIn patients undergoing incident hemodialysis, increased fibroblast growth factor-23 (FGF-23) levels are associated with the development of cardiovascular disease (CVD), but the influence of residual kidney function (RFK) on this association is unclear. This study aimed to investigate the association between FGF-23 levels, RKF, and CVD in patients undergoing prevalent hemodialysis.MethodsThis cross-sectional and longitudinal observational study included 296 patients undergoing maintenance hemodialysis for at least three months who were followed up for a median of 44 months. RKF was defined as 24-h urine output &gt;200 mL, left ventricular (LV) diastolic dysfunction as E/E’ &gt;15 on echocardiographic parameters. CVD was defined as hospitalization or emergency room visits due to cardiovascular causes, such as angina, myocardial infarction, or congestive heart failure.ResultsThe median intact FGF-23 (iFGF-23) level was 423.8 pg/mL (interquartile range, 171–1,443). Patients with an FGF-23 level &gt; 423.8 pg/mL significantly had a lower proportion of RKF (39.2% vs. 60.1%, P &lt; 0.001) and a higher proportion of LV diastolic dysfunction (54. 1% vs. 29.1%, P &lt; 0.001) than those with an iFGF-23 level ≤ 423.8 pg/mL. The odds ratio (OR) for LV diastolic dysfunction was significantly higher in patients with RFK (OR per one-unit increase in the natural log-transformed iFGF-23 levels, 1.80; 95% confidence interval [CI]: 1.11–2.93) than in patients without RKF (OR per one-unit increase in the natural log-transformed iFGF-23 levels: 1.42; 95% CI: 1.01–1.99) in multivariate analysis (p &lt; 0.001). During the follow-up period, 55 patients experienced CVD. The hazard ratio (HR) for CVD development was also significantly higher in patients with RKF (HR per one-unit increase in the natural log-transformed iFGF-23 levels, 2.64; 95% CI: 1.29–5.40) than those without RKF (HR per one-unit increase in the natural log-transformed iFGF-23 levels: 1.44; 95% CI: 1.04–1.99) in multivariate analysis (p = 0.05).ConclusionsIncreased iFGF-23 levels were associated with LV diastolic dysfunction and CVD development in patients undergoing prevalent hemodialysis; however, the loss of RKF attenuated the magnitude of these associations. Therefore, in these patients, RKF strongly influenced the detrimental role of iFGF-23 in the development of CVD.
Warthin-like papillary thyroid carcinoma: a case report and comprehensive review of the literature
Authors: Missaoui Abdel Mouhaymen , Hamza Fatma , Belabed Wafa , Mellouli Manel , Maaloul Mohamed , Charfi Slim , Jardak Issam , Sellami-Boudawara Tahya , Rekik Nabila , Abid Mohamed 
Published: July 2023

BackgroundPapillary Thyroid Carcinoma (PTC) is the most frequent endocrine malignancy with a variety of histological presentations. Warthin-like Papillary Thyroid Carcinoma (WLPTC) is an uncommon neoplasm that is recognized as a distinct subtype of PTC in the WHO classification of thyroid tumors. In this report, we present a novel case of WLPTC in a female patient and provide an in-depth review of the available literature on its clinical, pathological, and therapeutic characteristics.Case presentationA 27-year-old female patient was referred for neck swelling. Ultrasound showed two suspicious thyroid nodules leading to a thyroidectomy. She was diagnosed with intermediate-risk bifocal foci of classic PTC and WLPTC, arising from a background of chronic lymphocytic thyroiditis (CLT). This pT1b(m) N1b M0 malignancy was treated with adjuvant isotopic ablation and suppressive thyroxine therapy. The 1-year outcomes were favorable.Literature reviewIt covered articles published from 1995 to 2022, by searching PubMed and Google Scholar using specific terms. Out of 148 articles reviewed by two authors, 25 relevant articles were selected, including 13 case reports and 12 case series. The study included 150 cases of WLPTC. Data related to clinical presentation, imaging, histological features, management, and outcomes, were extracted. The mean age of diagnosis was 39 years, with a female predominance. The most common clinical presentation was neck swelling. Thyroid autoimmunity was positive in 71.6% of patients. Lymph node metastases were present in 28% of cases, with no reported distant metastases. Overall, the outcomes were favorable.ConclusionWLPTC shares similar clinical and radiological presentations as classic PTC. The hallmark histological features of WLPTC are papillae lined with oncocytic tumor cells with papillary nuclear changes and lymphoid stroma. WLPTC is almost constantly associated with CLT. The management of WLPTC aligns with that of classic PTC with comparable stage and risk category, often resulting in favorable outcomes.
The association between the CD4/CD8 ratio and surgical site infection risk among HIV-positive adults: insights from a China hospital
Authors: Liu Bo , Li Kangpeng , Li Shengtao , Zhao Rugang , Zhang Qiang 
Published: July 2023

PurposeIt is well known that the CD4/CD8 ratio is a special immune-inflammation marker. We aimed to explore the relationship between the CD4/CD8 ratio and the risk of surgical site infections (SSI) among human immunodeficiency virus (HIV)-positive adults undergoing orthopedic surgery.MethodsWe collected and analyzed data from 216 HIV-positive patients diagnosed with fractures at the department of orthopedics, Beijing Ditan Hospital between 2011 and 2019. The demographic, surgical, and hematological data for all patients were collected in this retrospective cohort study. We explored the risk factors for SSI using univariate and multivariate logistic regression analysis. Then, the clinical correlation between the CD4 count, CD4/CD8 ratio, and SSI was studied using multivariate logistic regression models after adjusting for potential confounders. Furthermore, the association between the CD4/CD8 ratio and SSI was evaluated on a continuous scale with restricted cubic spline (RCS) curves based on logistic regression models.ResultsA total of 23 (10.65%) patients developed SSI during the perioperative period. Patients with hepatopathy (OR=6.10, 95%CI=1.46-28.9), HIV viral load (OR=8.68, 95%CI=1.42-70.2; OR=19.4, 95%CI=3.09-179), operation time (OR=7.84, 95%CI=1.35-77.9), and CD4 count (OR=0.05, 95%CI=0.01-0.23) were risk factors for SSI (P-value &lt; 0.05). Our study demonstrated that a linear relationship between CD4 count and surgical site infection risk. In other words, patients with lower CD4 counts had a higher risk of developing SSI. Furthermore, the relationship between CD4/CD8 ratio and SSI risk was non-linear, inverse ‘S’ shaped. The risk of SSI increased substantially when the ratio was below 0.913; above 0.913, the risk of SSI was almost unchanged. And there is a ‘threshold-saturation’ effect between them.ConclusionOur research shows the CD4/CD8 ratio could be a useful predictor and immune-inflammation marker of the risk of SSI in HIV-positive fracture patients. These results, from a Chinese hospital, support the beneficial role of immune reconstitution in HIV-positive patients prior to orthopedic surgery.
Transfusion-dependent non-severe aplastic anemia: characteristics and outcomes in the clinic
Authors: Zhang Yawen , He Yao , Wang Suli , Sun Jingnan , Jia Jinsong , Gong Yuemin , He Guangsheng , Li Jianyong 
Published: July 2023

Transfusion-dependent non-severe aplastic anemia (TD-NSAA) is a rare condition of bone marrow failure that can persist for a long time or develop into severe aplastic anemia (SAA). Little is known about the clinical and laboratory characteristics, and disease prognosis and outcomes in TD-NSAA patients. The clinical and laboratory data of 124 consecutive TD-NSAA patients in the Chinese Eastern Collaboration Group of Anemia from December 2013 and January 2017 were analyzed retrospectively. In 124 TD-NSAA patients, the median age was 32 years (range: 3-80) and the median disease course was 38 months (range: 3-363). Common complications were iron overload (53/101, 52.5%), liver and kidney dysfunction (42/124, 33.9%), diabetes mellitus/impaired glucose tolerance (24/124, 19.4%), and severe infection (29 cases, 23.4%). 58% of patients (57/124) developed severe aplastic anemia with a median progression time of 24 months (range: 3-216). Patients with absolute neutrophil count (ANC) &lt;0.5×109/L, severe infection, or iron overload had a higher probability of progression to SAA (P=0.022, P=0.025, P=0.001). Patients receiving antithymocyte globulin (ATG) plus Cyclosporin A (CsA) had a higher overall response rate compared to those receiving CsA alone (56.7% vs 19.3%, P &lt; 0.001). The addition of ATG was the favorable factor for efficacy (P=0.003). Fourteen patients developed secondary clonal hematologic disease: eleven patients with paroxysmal nocturnal hemoglobinuria, two patients with myelodysplastic syndromes, and one patient with acute myeloid leukemia, respectively. Ten patients (8.1%) died with a median follow-up of 12 months (range: 3- 36 months). Patients with TD-NSAA usually have a prolonged course of disease, and are prone to be complicated with important organ damage and disease progression to SAA. Intensive immunosuppressive therapy based on ATG might be an appropriate approach for TD-NSAA.Clinical trial registration:http://www.chictr.org.cn/edit.aspx?pid=125480&amp;htm=4, identifier ChiCTR2100045895.
Population structure and reproductive dynamics of the ridged swimming crab Charybdis natator in the southern Taiwan Strait of China: significant changes within 25 years
Authors: Lin Bai-an , Jiang Yan , Liu Min 
Published: July 2023

The ridged swimming crab Charybdis natator (Portunidae) is a commercially important crustacean species in China. The purpose of this study is to compare its population structure and reproductive pattern within the same fishing area (the southern Taiwan Strait) from two datasets over 25 years; one from 1994−1996 (the early years of the C. natator fishery) and the other from 2019. The overall sex ratio (male:female) changed from a male bias (1:0.76, p &lt; 0.01) in 1994−1996 to a female bias (1:1.38, p &lt; 0.01) in 2019. Male body sizes (carapace width, CW) were significantly larger than those of females in both datasets (p &lt; 0.05). The average CW and body weight (BW) of males and females in 2019 were significantly smaller (p &lt; 0.01) and lighter (p &lt; 0.01) than those in 1994−1996. The maximum body size and the proportion of large-sized individuals (CW &gt; 10 cm) decreased dramatically over 25 years. One spawning peak season was identified from each dataset, i.e., March−August 1994−1996 and February−April 2019, revealing a 1-month shift. The minimum body sizes for female maturation (carrying eggs) were 6.9 cm CW in 1994−1996 and 6.1 cm CW in 2019, an 11.6% reduction over 25 years. For the first time, the CW at 50% female maturation, the relationship between female absolute fecundity and CW, and egg diameters were obtained from the 2019 dataset, which can be applied in the future comparisons. Recent studies have revealed a consistent spawning peak in February–April for several commercially important crabs in the southern Taiwan Strait. These findings should be considered in crab fishery management. Furthermore, both fishery- and environment-associated factors influencing crustacean population structure and reproductive dynamics merit further investigation.
Reduced phosphorus is associated with older age and hypoalbuminemia. Risk factors for all-cause mortality in peritoneal dialysis patients
Authors: Ávila Marcela , Prado Ma. del Carmen , Cuevas-Budhart Miguel Ángel , Paniagua Ramón 
Published: July 2023

Introduction/aimHyperphosphatemia is a mortality risk factor in dialysis patients; however, low phosphorus levels too. Diabetes and malnutrition are strongly associated with mortality and with reduced serum phosphorus. This study analyzed the pattern of serum phosphorus in patients on Peritoneal Dialysis (PD) and its association with mortality.MethodsA Secondary analysis was performed on a multicenter cohort study in peritoneal dialysis patients from two previous studies done by our group.ResultsSix hundred fifty-four patients were included. Serum phosphorus was &lt;3.6 mg/dL in 28.29% of patients, 3.6 to 5.2 mg/dL in 48.16%, and &gt;5.2 mg/dL in 23.55%. In logistic regression analysis; education, age, and hypoalbuminemia were risk factors for low P levels. In multivariate Cox analysis P &lt; 3.6 mg/dL, age, and low albumin were predictors for all-cause mortality. When lower P and lower albumin were combined, this group had the highest risk for all cause and cardiovascular mortality.ConclusionThe frequency of patients with reduced serum phosphorus was higher in the Mexican population than in Europe or Asia. Low serum phosphorus levels, older age and hypoalbuminemia were risk factors for all-cause mortality. Low phosphorus combined with low albumin levels were the highest risk factor for all-cause and cardiovascular mortality.
Association of dietary patterns with depressive symptoms in Chinese adolescents: a cross-sectional study
Authors: Qian Kongjia , Wang Dan , Sun Yongfang , Ye Xian , Wang Dan , Xu Hongzhen 
Published: July 2023

ObjectiveDepression is highly prevalent in adolescents and may have adverse social and health consequences. To investigate the effect of diet on the occurrence of depression in adolescents, this study examined the correlation between dietary patterns and depression in adolescents.MethodsA total of 853 participants were recruited in September to October 2022 in Taizhou, Zhejiang, China. The Chinese version of the Patient Health Questionnaire-9 was used to assess the subjects’ depressive symptoms in the past 2 weeks. Relevant dietary information was obtained through a food frequency questionnaire. The associations between dietary patterns and the risk of depression were assessed using a logistic regression model.ResultsFour dietary patterns were identified by factor analysis, including the modern pattern, the snack-aquatic pattern, the traditional pattern, and the vegetarian pattern. The risk of mild depression among adolescents was higher in the Q2 and Q3 groups of the modern model than in the Q1 group of this type, and the risk of mild depression was higher in the Q4 group of the snack-aquatic model than in the Q1 group of this type; while the risk of moderate depressive symptoms was lower in the Q3 group of the vegetarian model compared with the Q1 group.ConclusionModern and snack-aquatic patterns are associated with an increased risk of depression in Chinese adolescents, and vegetarian patterns are associated with a reduced risk of depression. The current findings emphasize the importance of adolescents consuming moderate amounts of rice flour, adequate vegetables and fruits, and reducing snack intake.