bluuebunny/crossref_metadata_2025_split huggingface dataset:
EXAMINING THE EFFECT OF DIRECTED ACTIVITY RELATED TO TEXTS (DARTs) AND GENDER ON STUDENTSâ€™ ACHIEVEMENT IN QUALITATIVE ANALYSIS IN CHEMISTRY
Authors: Shamsulbahri Mohamad Mahathir , Zulkiply Norehan 
Published: January 2021

Purpose â€“ The present study examined the effect of Directed Activity Related to Texts (DARTs) and gender on student achievement in qualitative analysis in chemistry. It focused on the qualitative analysis component of the Chemistry course, which for students has been perceived as being the most difficult aspect of their mastery of the subject. Methodology â€“ The study involved 120 secondary four science stream students from two local fully residential schools. In a quasi-experiment, participants studied the topic of qualitative analysis of salt, using one of the following three instructional methods: Experiment, DARTs, and Combination of Experiment and DARTs. The participants in the three groups were then tested on their knowledge about salt. Findings â€“ Results of a two-way independent ANOVA performed on the experiment data revealed a significant main effect corresponding to the type of instructional method that the three groups were treated to â€” the mean scores for the Combined method group was the highest, followed by the DARTs group, and then the Experiment group. Further analysis using an independent t-test showed that the difference in mean scores between the DARTs and Experiment groups was significant. It is argued that participantsâ€™ learning in the Combined method group might have been enhanced by the DARTs instructional method. The effect of gender and the interaction effect between the variables were not significant. Significance â€“ The findings of the study has provided clear experimental evidence regarding the role of the DARTs instructional method in enhancing qualitative analysis learning in chemistry. These findings also provided important insights to educators on DARTs as an alternative method of teaching and learning the topic on qualitative analysis in chemistry.
ANALISIS POLA PENJUALAN HASIL KOMODITI PADI SAWAH DI DESA RIAS KECAMATAN TOBOALI KABUPATEN BANGKA SELATAN
Authors: Oktia Sela , Setiawan Iwan , Agustina Fournita 
Published: January 2021

Penelitian ini bertujuan mendeskripsikan pola penjualan hasil komoditi padi sawah di Desa Rias Kecamatan Toboali Kabupaten Bangka Selatan, menganalisis faktor- faktor yang mempengaruhi keputusan petani dalam memilih pola penjualan hasil komoditi padi sawah dalam bentuk gabah dan beras di Desa Rias Kecamatan Toboali Kabupaten Bangka Selatan, menganalisis perbedaan pendapatan petani yang memilih pola penjualan dalam bentuk gabah dan beras di Desa Rias Kecamatan Toboali Kabupaten Bangka Selatan. Penelitian ini dilaksanakan pada bulan Juni 2019 sampai dengan Januari 2020 di Desa Rias Kecamatan Toboali Kabupaten Bangka Selatan. Metode penelitian yang digunakan adalah metode survei. Metode penarikan contoh yang digunakan adalah sampling insidental dengan sampel dua kelompok petani yang melakukan pola penjualan yang berbeda (gabah dan beras). Jumlah sampel petani yang menjual dalam bentuk gabah sebanyak 35 orang dan jumlah sampel petani yang menjual dalam bentuk beras sebanyak 35 orang. Metode analisis data menggunakan statistik deskriptif, analisis kuantitatif (regresi binary logistik, compare independent samples t-test). Hasil penelitian menunjukkan pola penjualan yang dilakukan petani di Desa Rias yaitu pola penjualan dalam bentuk gabah dan pola penjualan dalam bentuk beras . Variabel yang berpengaruh terhadap keputusan petani dalam memilih pola penjualan gabah dan beras yaitu usia, harga ditingkat produsen dan modal yang dimiliki dengan nilai pada Nalgelkerke R Square sebesar 84,2%. Terdapat perbedaan pendapatan rata-rata gabah sebesar Rp.4.725.751,43 dan pendapatan petani beras sebesar Rp.13.040.380,00 dengan rentang selisih pendapatan penjualan gabah dan beras yaitu sebesar Rp8.314.629.
Ozonioterapia como coadjuvante na irrigação do sistema de canais radiculares
Authors: Fernandes Karina Gonzalez Camara , Andreani Dora Inés Kozusny , Tim Carla Roberta , Bazan Lara Gimenez , Moreti Lucieni Cristina Trovati , Simonato Luciana Estevam , Garcia Lívia Assis 
Published: January 2021

Na prática clínica da odontologia, é evidenciado que apesar dos avanços na área da endodontia, agentes microbianos e erros técnicos são os principais fatores responsáveis pelo insucesso endodôntico. O preparo químico mecânico tem como objetivo remover tecido necrosado, vital, microrganismos e seus subprodutos do sistema de canais radiculares. No entanto, este preparo não é suficiente para a limpeza satisfatória em virtude da complexidade anatômica do sistema de canais radiculares, podendo gerar a permanência de microrganismos que poderão continuar viáveis e ativos, interferindo no processo de reparação dos tecidos perirradiculares. Desta forma se faz necessário a busca por soluções químicas irrigadoras ideais que possam proporcionar melhores resultados no tratamento endodôntico. Dentro deste contexto, o objetivo deste estudo é proporcionar, através de uma revisão narrativa, uma compreensão das evidências atuais disponíveis sobre a importância da utilização do ozônio O3, como coadjuvante à irrigação do sistema de canais radiculares na terapia endodôntica. A pesquisa realizada caracteriza-se como exploratório-descritiva, tratando-se da abordagem, consiste em uma pesquisa qualitativa. As buscas foram realizadas nas bases de dados bibliográficas do PubMed/MEDLINE, Biblioteca virtual da saúde (BVS), Web of Science e SciELO. As evidências encontradas nesse estudo direcionam que o ozônio é capaz de inativar microrganismos através da oxidação direta de seus componentes estruturais, podendo ser proposto como um coadjuvante em tratamentos endodônticos contra microrganismos (Gram positivo e Gram negativo) presentes na cavidade oral e canais radiculares. Entretanto, faz-se necessário ensaios clínicos controlados e randomizados para endossar sua eficácia e dosimetrias ideias na prevenção e tratamentos endodônticos.
MYANMAR1962: FEMINISM IN THE POST MILITARY JUNTA ERA
Authors: Sari Artha Karyn , Fadlilah Afifatul , Romadhona Olvira , Nakajima Riko 
Published: January 2021

Aung San Suu Kyi is a feminist activist who opposes the Military Junta government. She highly upholds gender equality and strives for all people to have the right to live. However, she ended up in prison for years because of his bold actions. After being released from the detention center, Aung San Suu Kyi campaigned on Feminism, which has influenced many women to fight for their rights. Because of Aung San Suu Kyi, more and more women, both students, workers, and business people, also voiced their goals, especially women's participation in various sectors and women's freedom in leading the country. The participation of women they strive for participates in the media, public administration, politics, and the student movement. This movement was implementing because women can also contribute to advancing the country's economy and politics. The U.N role is also very influential in this case through its campaigns that include men to voice gender equality. Because gender equality is not only for women, but everyone has the right to gender equality. Due to, to achieve the same goal, namely peace between humans
KONDISI SOSIAL EKONOMI NELAYAN PENANGKAP IKAN JULUNG-JULUNG DI WILAYAH PESISIR KAMPUNG PALARENG KABUPATEN KEPULAUAN SANGIHE
Authors: Sarapil Costantein Imanuel , Kumaseh Eunike Irene , Ikhtiagung Ganjar Ndaru , Lahungkasiang Putri , Puspaputri Erlin 
Published: January 2021

Penelitian ini bertujuan untuk mengetahui kondisi sosial ekonomi nelayan serta menganalisis usaha penangkapan ikan julung-julung dengan soma giop di Kampung Palareng. Kegiatan usaha penangkapan ikan yang sudah berlangsung lama, sehingga menarik untuk diketahui apakah usaha tersebut memberi keuntungan bagi nelayan di Kampung Palareng. Metode yang digunakan dalam penelitian ini yaitu metode kualitatif dan kuantitatif. Dimana penelitian kualitatif menggunakan fenomena sosial menjadi pusat perhatian. Sedangkan penelitian kuantitatif menggunakan analisa dan perhitungan. Hasil penelitian disajikan secara deskriptif kualitatif, sementara untuk memperoleh nilai B/C, NPV dan PP menggunakan metode kuantitatif. Kondisi sosial nelayan di Kampung Palareng masih sangat kuat. Solidaritas yang tinggi bagi masyarakat dapat terlihat dalam kegiatan gotong royong maupun kegiatan sosial lainnya. Sebagian besar masyarakat mempunyai tingkat pendidikan Sekolah Dasar (SD). Pendapatan yang tegolong tinggi bagi para nelayan. Secara finansial, analisis kelayakan usaha penangkapan ikan julung-julung diperoleh hasil BCR sebesar 0,96 dimana B/C kurang dari 1, PP 1 tahun, dan NPV sebesar Rp -12.472.049 (NPV bernilai negatif). Secara Finansial, usaha penangkapan ikan julung-julung di Kampung Palareng tidak layak untuk diteruskan. Namun, usaha penangkapan ikan julung-julung memiliki makna sosial dan budaya yang tinggi bagi kehidupan masyarakat Kampung Palareng. Baik perempuan maupun laki-laki, tua dan muda, semua bekerja sama ikut perahu penangkap ikan julung-julung dan mengikuti kegiatan pengoperasian penangkapan ikan. Hasil tangkapan dibagi untuk semua yang mengikuti kegiatan penangkapan maupun bagi masyarakat secara keseluruhan. Nilai sosial budaya ini yang mempertahankan keberadaan usaha penangkapan ikan julung-julung di Kampung Palareng.
Integrative Identification of Hub Genes Associated With Immune Cells in Atrial Fibrillation Using Weighted Gene Correlation Network Analysis
Authors: Yan Tao , Zhu Shijie , Zhu Miao , Wang Chunsheng , Guo Changfa 
Published: January 2021

Background: Atrial fibrillation (AF) is the most common tachyarrhythmia in the clinic, leading to high morbidity and mortality. Although many studies on AF have been conducted, the molecular mechanism of AF has not been fully elucidated. This study was designed to explore the molecular mechanism of AF using integrative bioinformatics analysis and provide new insights into the pathophysiology of AF.Methods: The GSE115574 dataset was downloaded, and Cibersort was applied to estimate the relative expression of 22 kinds of immune cells. Differentially expressed genes (DEGs) were identified through the limma package in R language. Weighted gene correlation network analysis (WGCNA) was performed to cluster DEGs into different modules and explore relationships between modules and immune cell types. Functional enrichment analysis was performed on DEGs in the significant module, and hub genes were identified based on the protein-protein interaction (PPI) network. Hub genes were then verified using quantitative real-time polymerase chain reaction (qRT-PCR).Results: A total of 2,350 DEGs were identified and clustered into eleven modules using WGCNA. The magenta module with 246 genes was identified as the key module associated with M1 macrophages with the highest correlation coefficient. Three hub genes (CTSS, CSF2RB, and NCF2) were identified. The results verified using three other datasets and qRT-PCR demonstrated that the expression levels of these three genes in patients with AF were significantly higher than those in patients with SR, which were consistent with the bioinformatic analysis.Conclusion: Three novel genes identified using comprehensive bioinformatics analysis may play crucial roles in the pathophysiological mechanism in AF, which provide potential therapeutic targets and new insights into the treatment and early detection of AF.
Large-Scale High-Resolution Coastal Mangrove Forests Mapping Across West Africa With Machine Learning Ensemble and Satellite Big Data
Authors: Liu Xue , Fatoyinbo Temilola E. , Thomas Nathan M. , Guan Weihe Wendy , Zhan Yanni , Mondal Pinki , Lagomasino David , Simard Marc , Trettin Carl C. , Deo Rinki , Barenblitt Abigail 
Published: January 2021

Coastal mangrove forests provide important ecosystem goods and services, including carbon sequestration, biodiversity conservation, and hazard mitigation. However, they are being destroyed at an alarming rate by human activities. To characterize mangrove forest changes, evaluate their impacts, and support relevant protection and restoration decision making, accurate and up-to-date mangrove extent mapping at large spatial scales is essential. Available large-scale mangrove extent data products use a single machine learning method commonly with 30 m Landsat imagery, and significant inconsistencies remain among these data products. With huge amounts of satellite data involved and the heterogeneity of land surface characteristics across large geographic areas, finding the most suitable method for large-scale high-resolution mangrove mapping is a challenge. The objective of this study is to evaluate the performance of a machine learning ensemble for mangrove forest mapping at 20 m spatial resolution across West Africa using Sentinel-2 (optical) and Sentinel-1 (radar) imagery. The machine learning ensemble integrates three commonly used machine learning methods in land cover and land use mapping, including Random Forest (RF), Gradient Boosting Machine (GBM), and Neural Network (NN). The cloud-based big geospatial data processing platform Google Earth Engine (GEE) was used for pre-processing Sentinel-2 and Sentinel-1 data. Extensive validation has demonstrated that the machine learning ensemble can generate mangrove extent maps at high accuracies for all study regions in West Africa (92%–99% Producer’s Accuracy, 98%–100% User’s Accuracy, 95%–99% Overall Accuracy). This is the first-time that mangrove extent has been mapped at a 20 m spatial resolution across West Africa. The machine learning ensemble has the potential to be applied to other regions of the world and is therefore capable of producing high-resolution mangrove extent maps at global scales periodically.
Near-Field Body-Wave Extraction From Ambient Seafloor Noise in the Nankai Subduction Zone
Authors: Tonegawa Takashi , Kimura Toshinori , Araki Eiichiro 
Published: January 2021

Ambient noise correlation is capable of retrieving waves propagating between two receivers. Although waves retrieved using this technique are primarily surface waves, the retrieval of body waves, including direct, refracted, and reflected waves, has also been reported from land-based observations. The difficulty of body wave extraction may be caused by large amplitudes and little attenuation of surface waves excited by microseisms, indicating that body wave extraction using seafloor records is very challenging because microseisms are generated in ocean areas and large amplitudes of surface waves are presumably observed at the seafloor. In this study, we used a unique dataset acquired by dense arrays deployed in the Nankai subduction zone, including a permanent cabled-network of 49 stations, a borehole sensor, and 150 temporary stations, to attempt to extract near-field body waves from ambient seafloor noise observed by multivariate sensors of broadband and short-period seismometers, differential pressure gauges (DPGs), and hydrophones. Our results show thatPwaves are extracted only in the DPG-record correlations at a frequency of 0.2–0.5 Hz, which can be seen up to a separation distance of two stations of 17 km with an apparent velocity of 3.2 km/s. At 1–3 Hz,Pwaves are observed only in the vertical-record correlations up to a separation distance of 11 km with an apparent velocity of 2.0 km/s. These velocity differences reflect the vertical velocity gradient of the accretionary prism, because thePwaves at low frequencies propagate at relatively long distances and therefore the turning depth is greater. Moreover, the long-period and short-periodPwaves are observed at the slope and flat regions on the accretionary prism, respectively. To investigate the retrieved wavefield characteristics, we conducted a two-dimensional numerical simulation for wave propagations, where we located single sources at the sea surface above the flat and slope bathymetry regions. Based on our observations and simulations, we suggest that the retrieval of near-field body waves from ambient seafloor noises depends on the relative amplitudes ofPand other surface waves in the ambient noise wavefield, and those are controlled by the subseafloor velocity structure, seafloor topography, and water depth.
Plethora of Traumatic Lesions of Bilateral Knee Extensor Mechanism in Osteogenesis Imperfecta
Authors: Kloen Peter , Hamdy Reggie Charles , Bech Niels Hendrik 
Published: January 2021

IntroductionInjuries to the quadriceps extensor mechanism are rare in patients with Osteogenesis Imperfecta (OI). To the best of our knowledge, non-union of the patella in OI, either as an isolated problem or in combination with an acute fracture, has not been previously reported.Case reportWe describe how we surgically approached both the fracture and the non-union simultaneously. The surgical technique and steps are described in detail. Post-operative course was uneventful and the outcome was favorable, with full return of function for the patient.ConclusionA review of various knee extensor mechanism injuries in OI is described as illustrated in a single patient. The unusual simultaneous surgical treatment of a non-union and an acute fracture in the same patella shows that despite the severely compromised bone in this rare bone disease the bone still has a capacity to heal with a functional outcome.
Behavioral and Developmental Changes in Brown Trout After Exposure to the Antidepressant Venlafaxine
Authors: Ziegler Michael , Banet Michel , Bauer Rebecca , Köhler Heinz-R. , Stepinski Sabine , Tisler Selina , Huhn Carolin , Zwiener Christian , Triebskorn Rita 
Published: January 2021

During the last decades, depression has been diagnosed in increasing numbers, accompanied by rising prescription rates of antidepressants. Concomitantly, these pharmaceuticals are frequently detected in surface waters. Serotonin and noradrenalin reuptake inhibitors such as venlafaxine form the second largest group of antidepressants worldwide, and venlafaxine is the second most prescribed antidepressant in Germany. As drug targets are evolutionary highly conserved, venlafaxine can potentially change not only behavior and related physiological processes in humans but also in non-target species, especially aquatic organisms. In order to test this hypothesis for fish, we exposed brown trout larvae and juveniles to venlafaxine at concentrations ranging from 1 to 1,000 μg/L. Larvae were exposed for 5 months from the eyed ova stage until 8 weeks post yolk-sac consumption at 7 and 11 °C. Juveniles were exposed for 4 weeks at 7 °C. Mortality, weight, length, behavior during exposure and behavior in a stressful environment were recorded in both experiments. For larvae, additionally, hatching rate and heart rate were analyzed. In juvenile fish, tissue cortisol levels were determined. Our results clearly showed, that brown trout, irrespective of their life stage, change their behavior when being exposed to venlafaxine: During exposure, venlafaxine at 7 °C caused larvae to sojourn in the upper part of the aquaria for a longer time, with a lowest observed effect concentration of 100 μg/L. In a stressful environment with limited space, fish exposed to ≥10 μg/L venlafaxine were less active than controls. Furthermore, venlafaxine reduced the growth of larvae (length at ≥10 μg/L, weight at 1 mg/L) and their survival after 5 months (at 1 mg/L). Hatching rate and heart rate of larvae as well as tissue cortisol concentration of juveniles were not affected by venlafaxine treatment.
Assessment of Potential Risk Factors for the Development of Persistent Postural-Perceptual Dizziness: A Case-Control Pilot Study
Authors: Trinidade Aaron , Harman Paula , Stone Jon , Staab Jeffrey P. , Goebel Joel A. 
Published: January 2021

Objectives: (1) To assess whether neuroticism, state anxiety, and body vigilance are higher in patients with persistent postural-perceptual dizziness (PPPD) compared to a recovered vestibular patient group and a non-dizzy patient group; (2) To gather pilot data on illness perceptions of patients with PPPD.Materials and Methods: 15 cases with PPPD and two control groups: (1) recovered vestibular patients (n = 12) and (2) non-dizzy patients (no previous vestibular insult, n = 12). Main outcome measures: Scores from the Big Five Inventory (BFI) of personality traits, Generalized Anxiety Disorder - 7 (GAD-7) scale, Body Vigilance Scale (BVS), Dizziness Handicap Inventory (DHI), modified Vertigo Symptom Scale (VSS) and Brief Illness Perception Questionnaire (BIPQ).Results: Compared to non-dizzy patients, PPPD cases had higher neuroticism (p = 0.02), higher introversion (p = 0.008), lower conscientiousness (p = 0.03) and higher anxiety (p = 0.02). There were no differences between PPPD cases and recovered vestibular patients in BFI and GAD-7. PPPD cases had higher body vigilance to dizziness than both control groups and their illness perceptions indicated higher levels of threat than recovered vestibular patients.Conclusion: PPPD patients showed statistically significant differences to non-dizzy patients, but not recovered vestibular controls in areas such as neuroticism and anxiety. Body vigilance was increased in PPPD patients when compared with both recovered vestibular and non-dizzy patient groups. PPPD patients also exhibited elements of negative illness perception suggesting that this may be the key element driving the development of PPPD. Large scale studies focusing on this area in the early stages following vestibular insult are needed.
Changes in Gray Matter Asymmetries of the Fusiform and Parahippocampal Gyruses in Patients With Subcortical Ischemic Vascular Disease
Authors: Cheng Runtian , Chen Li , Liu Xiaoshuang , Luo Tianyou , Gong Junwei , Jiang Peiling 
Published: January 2021

Objective: Changes in the normal asymmetry of the human brain often mean pathology. Current studies on the correlation between asymmetry and cognitive impairment have focused on Alzheimer's disease (AD) and AD-related mild cognitive impairment (MCI). The purpose of this study was to investigate changes in gray matter asymmetry and their relationship with cognitive impairment in patients with subcortical ischemic vascular disease (SIVD) by using voxel-based morphological measurements.Methods: Fifty-nine SIVD patients with (subcortical vascular cognitive impairment, SVCI, N = 30) and without (pre-SVCI, N = 29) cognitive impairment and 30 normal controls (NC, N = 30) underwent high-resolution structural MRI and neuropsychological examinations. The differences in gray matter asymmetry among the three groups were estimated by using one-way ANOVA. Moreover, partial correlation analysis was performed to explore the relationships between the asymmetry index (AI) values and cognitive assessments controlled for age, sex, and education.Results: The gray matter asymmetries in the fusiform and parahippocampal gyruses of the SVCI group were significantly different from those of the NC group and the pre-SVCI group, while no differences were found between the NC group and the pre-SVCI group in the same areas. More specifically, in the fusiform and parahippocampal gyruses, the SVCI group displayed a dramatic rightward asymmetry, whereas the NC group and pre-SVCI group exhibited a marked leftward asymmetry. The results of the correlation analysis showed that the “mean AI” in significant cluster was strongly correlated with the changes in cognitive outcomes.Conclusion: This study demonstrated different lateralization in the fusiform and parahippocampal gyruses of SIVD patients with cognitive impairment compared to healthy subjects and SIVD patients without cognitive decline. Our findings may contribute to better understanding the possible mechanism of cognitive impairment in patients with SIVD, and they suggest the possibility of using gray matter asymmetry as a biomarker for disease progression.