bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estimación de orientación de un vehículo aéreo no modelado usando fusión de sensores inerciales y aprendizaje de máquina
Authors: Fonnegra Ruben , Goez German , Tobón Andrés 
Published: September 2019

<p>Los vehículos aéreos no tripulados (UAV) ofrecen alternativas para diversas aplicaciones en las que se compromete la integridad humana. En este sentido, la necesidad de incrementar la autonomía de estos vehículos presenta una alternativa al área de inteligencia artificial para aumentar las capacidades de navegación en diversos entornos. Este artículo presenta una evaluación para estimación de inclinación y orientación, utilizando algoritmos de aprendizaje automático para una planta dinámica con múltiples rotores. Para esto se propone un experimento para recopilar datos de unidades de medición inercial (IMU) sobre la placa de un UAV, y sometidos a diferentes inclinaciones antes de lograr la tarea de clasificación. Los resultados reportados usando los algoritmos de k vecinos más cercanos (k-NN), máquinas de soporte vectorial (SVM) y de Bayes muestran eficiencia en el reconocimiento, obteniendo una precisión hasta del 99 %. Además, estos algoritmos podrían combinarse con técnicas de control robustas, ideal para la implementación en sistemas con capacidades de procesamiento limitadas.</p>
Investigation of Body Composition of Footballers by Bioelectrical Impedance Method
Authors: Aktas Yakup , Gokhan Ismail 
Published: September 2019

Objective: This study aims at examining the body composition of male football players who perform regular football training by Bioelectrical Impedance (BIA) method and comparing it with a healthy control group and investigating the effect of regular exercise on body composition.Materials and Methods: A total of 60 people participated in the study, including 30 volunteer male football players performing football trainings regularly from 11 Nisan Football Club playing in Turkey Football Federation Regional Amateur League (BAL) and 30 healthy volunteer control group consisting of male students from Harran University Medical Faculty. Both groups’ ages and body mass indexes are similar to each other. Bioelectrical Impedance (BIA) method was used for Osseosis, skeletal muscle weight (SMM), body mass index (BMI), body fat percentage (BFP), waist hip ratio (WHR), and basal metabolism parameters of the participants. The data obtained were evaluated with SPSS 23.0 statistical package program, and the significance level was evaluated as p < 0.01 and p < 0.05.Findings: There was no statistically significant difference between the values of age, height, weight, intracellular fluid, extracellular fluid, protein, mineral, skeletal muscle weight (SMM), body mass index (BMI) and muscle ratios of the experimental and control groups (p > 0.05). When the parameters of basal metabolism, Osseosis and skeletal muscle weight of the experimental group were discussed, no significant relationship was detected, although they were high numerically (p > 0.05). It was determined that the body fat percentage (BFP) of the experimental and control groups was correlated at p < 0.01 level and waist-hip ratio was correlated (WHR) at p < 0.05 level, which was statistically significant. As a result, although there was no significant difference between BMI values between the football players and the control group, the fact that the players' lower BMI values and lower waist-hip ratios showed that regular training reduces the risk of developing chronic diseases.
Dinámica de microalgas frente a la costa de las Peñitas-Poneloya, Nicaragua
Authors: Rojas Jirón Sabrina Francisca , Romero Peralta Joseyka Nayara , Hernández Rivera Carmen Isabel , Cea Navas Noelia Erlinda 
Published: September 2019

Esta es una investigación descriptiva que ha estudiado la dinámica de las microalgas (Cyanophytas, Chlorophytas, Bacillariophyceae y Dinoflagellata) y su relación con los parámetros físico-químicos de las costas de las Peñitas-Poneloya en el período de Junio-Octubre del 2017. Se tomaron muestras de 3 puntos diferentes entre el área comprendida en las coordenadas 12°20´10.63¨N 87°01´59.58¨O y 12°21´59.68¨N 87°04´13.27¨O. Estos muestreos se realizaban una vez al mes y en ellos se tomaban las muestras de agua y los parámetros físico-químicos (pH, salinidad, temperatura, turbidez y oxígeno). Se hacía conteo de células con ayuda de la cámara Neubauer y la identificación de microalgas con ayuda de la cámara Sedgewick-Rafter. Se encontraron microalgas de los cuatro principales grupos, teniendo más representación de la clase Bacillariophyceae con 16 especies, seguidas de las Cyanophytas con 7 especies, Chlorophytas con 6 especies y Dinoflagellata con 5 especies. El parámetro de la salinidad oscilo entre 30 ppm como valor mínimo presentado en el punto 1 y 34 ppm como valor máximo presentado en el punto 3, la temperatura fluctuó entre 27° C y 29.7° C, teniendo el valor mínimo en el mes de agosto en el 2do punto y la máxima en el mes de junio en el 3er punto, la turbidez mantuvo un valor estable de 100 cm en sus 3 puntos durante todo el período de investigación. El oxígeno disuelto varió entre 7.3 mg/l y 8.3 mg/l, teniendo su valor mínimo en el mes de junio en el 1er punto y el máximo en septiembre en su 1er punto. El pH osciló entre 8.6 su mínimo, encontrado en el mes de junio en el 2do punto y su máximo de 10.4 en el mes julio en el 2do punto. A todas las especies encontradas se le aplicaron los índices estadísticos Diversidad de Shannon y Dominancia de Simpson, para indagar si la zona cuenta con abundante biodiversidad o había dominancia de una especie específica, y según los resultados obtenidos se puede asegurar que el área cuenta con una diversidad y abundancia de especies de microalgas homogéneas.
Ekuitas Layanan Rawat Inap Rumah Sakit di Indonesia
Authors: Ariani Devi Senja , Pujiyanto Pujiyanto 
Published: September 2019

Abstrak Dalam rangka mendorong tercapainya UHC di Indonesia, pemerintah menyelenggarakan program Jaminan Kesehatan Nasional (JKN). Salah satu tujuan program JKN adalah perbaikan akses dan ekuitas utilisasi pelayanan kesehatan. Penelitian ini bertujuan untuk menganalisis ekuitas utilisasi layanan rawat inap pada tahun 2015 dan 2016. Penelitian ini menggunakan data sekunder hasil SUSENAS tahun 2015 dan tahun 2016 dengan analisis menggunakan kurva konsentrasi dan indeks konsentrasi. Hasil penelitian menunjukkan bahwa utilisasi layanan rawat inap di rumah sakit pada kelompok peserta JKN meningkat pada tahun 2015 ke tahun 2016. Penduduk kaya lebih banyak memanfaatkan pelayanan rumah sakit dibandingkan dengan penduduk miskin, hal tersebut dibuktikan dengan kurva konsentrasi yang berada dibawah garis diagonal (garis ekuitas) dan nilai indeks konsentrasi yang bernilai positif yaitu 0.0336 pada tahun 2015 dan 0.0382 pada tahun 2016. Terjadi peningkatan inekuitas utilisasi layanan rawat inap di rumah sakit pada tahun 2015 ke tahun 2016 yang dilihat dari selisih nilai indeks konsentrasi sebesar 0.0045. Inekuitas utilisasi layanan rawat inap di rumah sakit yang pro kaya disebabkan oleh ketidaksetaraan umur, pendapatan, pendidikan, wilayah regional tempat tinggal serta kepemilikan JKN. Sedangkan variabel jenis kelamin dan pekerjaan mengurangi inekuitas dalam utilisasi layanan rawat inap di rumah sakit pada tahun 2015 dan 2016. Abstract In order to encourage the achievement of UHC in Indonesia, the government organized National Health Insurance (JKN) program. One of the objectives of the JKN program is the improvement of access and equity utilization of health services. This study aims to analyze Equity of Inpatient Utilization in Health Service in second and third year of JKN program implementation in 2015 and 2016. This study uses secondary data of SUSENAS in 2015 and 2016 with analysis using concentration curve and concentration index. The results showed that the Utilization of inpatient services in hospitals in the JKN group of participants increased in 2015 to 2016. The richer population utilizes more Health Service than the poor, as evidenced by concentration curves below the diagonal line (equity line) and the value of the positive concentration index of 0.0336 in 2015 and 0.0382 in 2016. There was an increase in inequity utilization in inpatient services in 2015 to 2016 which was seen from the difference of concentration index value of 0.0045. Pro-rich inequity caused by inequalities in age, income, education, regional residence and JKN ownership. While sex and job variables reduce inequality in inpatient service utilization in hospital by 2015 and 2016.
Determinan Sosial Ekonomi Konsumsi Minuman Berpemanis di Indonesia: Analisis Data Susenas 2017
Authors: Daeli Widi Astutty Casimira , Nurwahyuni Atik 
Published: September 2019

Abstrak Sugar-Sweetened Beverages (SSBs) atau yang dikenal dengan minuman berpemanis bergula adalah cairan yang ditambah­kan dengan berbagai macam bentuk gula. Konsumsi minuman berpemanis berlebih berkontribusi terhadap Penyakit Tidak Menular (PTM) seperti penambahan berat badan, meningkatkan risiko diabetes mellitus tipe 2 serta penyakit kardiovaskuler. PTM dapat dicegah sedini mungkin dengan mengurangi konsumsi kalori dalam gula. WHO menyarankan orang dewasa dan anak-anak untuk mengurangi asupan gula hingga kurang dari 10% dari total asupan energi dan dilanjutkan hingga kurang dari 5% dari total asupan energi. Artikel ini bertujuan untuk mengetahui determinan sosial ekonomi yang memengaruhi konsumsi minuman berpemanis. Menggunakan data sekunder dari survey sosial ekonomi nasional (Susenas) Tahun 2017 dengan model two part (OLS, Probit dan Tobit). Variabel akses internet merupakan variabel yang konsisten berhubungan dengan penurunan pengeluaran dan partisipasi rumah tangga untuk konsumsi minuman berpemanis. Oleh karena itu, perlu meningkatkan sosial­isasi promosi iklan layanan kesehatan masyarakat terkait bahaya konsumsi minuman berpemanis berlebihan dan pencantu­man batas aman konsumsi minuman berpemanis pada label kemasan. Abstract Sugar-Sweetened Beverages (SSBs) are added liquids with various of sugar. Consumption of SSBs contributes to Non-Communicable Diseases (NCDs) such as weight gain, increasing the risk of type 2 diabetes mellitus and cardiovascular diseases. NCDs can be prevent­ed as early as possible by reducing the consumption of calories in sugar. WHO recommends adults and children to reduce sugar intake to less than 10% of total energy intake and continue to less than 5% of total energy intake. This study aims to determine the socio-eco­nomic factors consumption of SSBs. We employed secondary data from the 2017 National Socio-Economic Survey (Susenas) with two-part models (OLS, Probit and Tobit). We found that internet access is consistently associated with lower household expenditure and consumption of SSBs. Therefore, it is necessary to increase the promotion of public health service advertising related to the danger of excessive consumption of SSBs and the inclusion of safe consumption of SSBs on packaging labels.
Chemical profile and pancreatic lipase inhibitory activity of Sinobambusa tootsik (Sieb.) Makino leaves
Authors: Qiu Xiao-Lin , Zhang Qing-Feng 
Published: September 2019

Background
Sinobambusa tootsik (Sieb.) Makino (S. tootsik) is one species of bamboo distributed in China, Japan and Vietnam. The chemical profile of its leaves and its potential application was unknown yet.

Methods
The chemical profile of S. tootsik was studied by HPLC and UPLC-DAD-QTOF-MS. The S. tootsik extract was prepared by extraction with 50% aqueous ethanol, followed by H103 macroporous resins adsorption and desorption processes. Pancreatic lipase inhibitory activity was determined using p-nitrophenyl palmitate as the substance, which was hydrolyzed by lipase to form coloured p-nitrophenol.

Results
Eighteen compounds were identified in S. tootsik. Most of them were the C-glycosylated derivatives of luteolin and apigenin, such as isoorientin, isoorientin-2″-O-rhamnoside and isovitexin. Isoorientin-2″-O-rhamnoside was the most dominant flavonoid in the sample. S. tootsik extract was prepared through resin adsorption/desorption with yield of 1.12 ± 015% and total flavonoids content of 82 ± 2 mg/g (in term of isoorientin). The extract exhibited pancreatic lipase inhibitory activity with IC50 value of 0.93 mg/mL.

Conclusion
The chemical profile of S. tootsik leaves was uncovered for the first time. C-glycosyl flavonoids were the main constituents in the plant. The extract exhibited pancreatic lipase inhibitory activity and may have potential for use as a food supplement for controlling obesity.
Klotho‐mediated targeting of CCL2 suppresses the induction of colorectal cancer progression by stromal cell senescent microenvironments
Authors: Liu Yangyang , Pan Jie , Pan Xia , Wu Lunpo , Bian Jun , Lin Zhenghua , Xue Meng , Su Tingting , Lai Sanchuan , Chen Fei , Ge Qiwei , Chen Luyi , Ye Shufang , Zhu Yabi , Chen Shujie , Wang Liangjing 
Published: September 2019

Senescent microenvironments play an important role in tumor progression. Here, we report that doxorubicin (DOX)‐pretreated or replicative senescent stromal cells (WI‐38 and HUVEC) promote colorectal cancer (CRC) cell growth and invasion in vitro and in vivo. These pro‐tumorigenic effects were attenuated by exogenous administration of Klotho, an anti‐aging factor. We subsequently identified several senescence‐associated secretory phenotype (SASP)‐associated genes, including CCL2, which were significantly upregulated in both types of senescent stromal cells during replication and DNA damage‐induced senescence. Importantly, we found that the secretion of CCL2 by senescent stromal cells was significantly higher than that seen in nonsenescent cells or in senescent cells pretreated with Klotho. Notably, CCL2 was found to accelerate CRC cell proliferation and invasion, while this effect could be blocked by administration of a specific CCR2 antagonist. We further show that Klotho can suppress NF‐κB activation during DOX‐induced senescence and thus block CCL2 transcription. Low expression of Klotho, or high expression of CCL2 in patient tumor tissues, correlated with poor overall survival of CRC patients. Collectively, our findings suggest that senescent stromal cells are linked to progression of CRC. Klotho can suppress the senescent stromal cell‐associated triggering of CRC progression by inhibiting the expression of SASP factors including CCL2. The identification of key SASP factors such as CCL2 may provide potential therapeutic targets for improving CRC therapy.
Unraveling the Mechanism of the Persistent Photoconductivity in Organic Phototransistors
Authors: Jia Ruofei , Wu Xiaofeng , Deng Wei , Zhang Xiujuan , Huang Liming , Niu Kaifeng , Chi Lifeng , Jie Jiansheng 
Published: September 2019

AbstractPersistent photoconductivity (PPC) in organic phototransistors provides an opportunity and broad prospects to achieve many emerging applications in optoelectronic devices. However, a fundamental understanding of PPC behavior is still a key challenge impeding its practical applications. In this study, for the first time, a mechanism for electron trapping is presented in oxygen‐induced deep levels in organic semiconductors for the clarification of PPC behavior with solid evidence. Both theoretical simulation and experimental investigation unveil that oxygen in air atmosphere plays a decisive role in determining the PPC behavior. Oxygen molecules can induce deep defect levels in the energy bandgap of organic semiconductors, which will act as deep traps for photogenerated electrons. The trapped electrons will be maintained in the traps and undergo a very slow releasing process after light illumination, thus leading to a noticeable PPC behavior for the organic phototransistors. The proposed mechanism shows good universality and can be applicable to a host of organic semiconductors for explaining the PPC behaviors. This work reveals the significant role of oxygen in PPC behavior and also provides guidelines for controlling the unique PPC behavior toward device applications.
Lattice Strain Formation through Spin‐Coupled Shells of MoS2 on Mo2C for Bifunctional Oxygen Reduction and Oxygen Evolution Reaction Electrocatalysts
Authors: Tiwari Anand P. , Yoon Yeoheung , Novak Travis G. , Azam Ashraful , Lee Minhe , Lee Sun Sook , Lee Gwan‐hyoung , Srolovitz David J. , An Ki‐Seok , Jeon Seokwoo 
Published: September 2019

AbstractIdentifying effective means to improve the electrocatalytic performance of transition metal dichalcogenides in alkaline electrolytes is a significant challenge. Herein, an advanced electrocatalyst possessing shells of molybdenum disulfide (MoS2) on molybdenum carbide (Mo2C) for efficient electrocatalytic activity in alkaline electrolytes is reported. The strained sheets of curved MoS2 surround the surface of Mo2C, turning the inactive basal planes of MoS2 into highly active electrocatalytic sites in the alkaline electrolyte. The van der Waals layers, which even possess van der Waals epitaxy along (100) facets of MoS2 and Mo2C, enhance the spin coupling between MoS2 and Mo2C, providing an easy electron transfer path for excellent electrocatalytic activity in alkaline electrolytes and solving the stability issue. In addition, it is found that curved MoS2 sheets on Mo2C show 3.45% tensile strain in the lattice, producing excellent catalytic activity for both oxygen reduction reaction (ORR) (with E1/2 = 0.60 V vs RHE) and oxygen evolution reaction (OER) (overpotential = 1.51 V vs RHE at 10 mA cm−2) with 60 times higher electrochemical active area than pristine MoS2. The unique structure and synthesis route outlined here provide a novel and efficient approach toward designing highly active, durable, and cost‐effective ORR and OER electrocatalysts.
3D Printing of Amylopectin‐Based Natural Fiber Composites
Authors: Jiang Yijie , Raney Jordan R. 
Published: September 2019

AbstractMany ancient Chinese structures, such as portions of the Great Wall, use a unique mortar that derives from glutinous rice (commonly called “sticky rice”). Unlike other types of rice, sticky rice is rich in amylopectin with negligible amylose. Inspired by the long‐term stability of the amylopectin‐based mortars in ancient structures, sticky rice (SR)‐based materials for 3D printing are developed. Heat causes amylopectin gelatinization, during which molecular branches open to form a large network of gel balls. This causes a merger of the granules and improved interaction between the matrix and fillers. To enhance the mechanical properties, cotton fibers are included, ≈11 µm in diameter. During amylopectin gelatinization, secondary fibers emerge from the primary fibers, creating a complex two‐level fiber network. Both the fibers and matrix constitute a 3D printable fiber composite consisting entirely of natural, inexpensive, and scalable components. The processing steps make no use of any non‐natural materials or hazardous chemicals. A systematic design of experiments is conducted to understand the effect of processing parameters on the mechanical properties. Scalability by printing low‐density cellular materials is demonstrated. Finally, it is shown that SR composites are more resilient than common thermoplastic composites when subjected to flame, heat, or ultraviolet light.
Strong Plasmon–Exciton Interactions on Nanoantenna Array–Monolayer WS2 Hybrid System
Authors: Liu Lin , Tobing Landobasa Y. M. , Yu Xuechao , Tong Jinchao , Qiang Bo , Fernández‐Domínguez Antonio I. , Garcia‐Vidal Francisco J. , Zhang Dao Hua , Wang Qi Jie , Luo Yu 
Published: September 2019

AbstractStrong plasmon–exciton interactions in monolayer transition‐metal dichalcogenides (TMDs) is emerging as a promising material platform for light emissions, nonlinear optics, and quantum communications, and their realizations require highly localized electric fields parallel to the transition dipole moment of TMD excitons. Here, a systematic study of light–matter interaction in planar dimer nanoantenna of nanoscale gaps coupled with monolayer WS2 is presented, where the effects of the local field enhancement and spatial mode overlap in the plasmon–exciton coupling strength are experimentally investigated. Importantly, anticrossing behaviors in the strong coupling regime with a Rabi splitting of Ω = 118 meV for gold bowtie antennas with 7 nm gaps and Ω = 138 meV for gold dimer arrays with 10 nm gaps are demonstrated.
Heavy Mn2+ Doped MgAl2O4 Phosphor for High‐Efficient Near‐Infrared Light‐Emitting Diode and the Night‐Vision Application
Authors: Song Enhai , Jiang Xingxing , Zhou Yayun , Lin Zheshuai , Ye Shi , Xia Zhiguo , Zhang Qinyuan 
Published: September 2019

AbstractPhotoluminescence originated from doped activators in the solid state materials usually faces the challenge of concentration quenching, restricting the further increase of photoluminescence intensity. Herein, a new strategy is demonstrated by the heavy doping Mn2+ into MgAl2O4, leading to the broad‐band near‐infrared (NIR) emission peaking at ≈825 nm with a full width at half maximum of ≈125 nm, as well as high internal quantum efficiency of ≈53% upon 450 nm laser excitation. Density functional theory calculation and extend X‐ray absorption fine structure provide a understanding of Al3+/Mn2+ disorder and Mn2+–Mn2+ aggregation in spinel Mg1–xAl2O4:xMn2+ with high Mn2+ content, which enables the formation of superexchange coupled IVMn2+–VIMn2+ pair. The NIR light‐emitting diodes fabricated by the 450 nm blue chip and Mg0.50Al2O4:0.50Mn2+ phosphor gives a high NIR output power of ≈78.41 mW under a driven current of 120 mA, and night‐vision application as light source in the dark is demonstrated. This work opens new paths for rational design of efficient broad‐band NIR emitting phosphor, and also provides new insights into the Mn2+ luminescence and the applications.
Mechanochemical Oxidative Heck Coupling of Activated and Unactivated Alkenes: A Chemo‐, Regio‐ and Stereo‐Controlled Synthesis of Alkenylbenzenes
Authors: Yu Jingbo , Shou Haowen , Yu Wangyang , Chen Haodong , Su Weike 
Published: September 2019

AbstractIn this work, we present an efficient mechanochemical strategy for chemo‐, regio‐ and stereo‐selective oxidative Heck coupling of readily accessible arylboron reagents/heteroaromatics with cyclic and acyclic olefins. Mono‐ and bis‐arylation were achieved without the need of ligands, directing groups or prefunctionalized alkenes, and the reaction chemo‐selectivity could be controlled by tuning of the oxidative system. This protocol offers the synthesis of alkenylbenzenes in broad substrate scope, satisfactory yields and excellent selectivity even in the gram scale.magnified image