bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influência da Precipitação da Fase ω na Dureza das Ligas Ti-10Mo-20Nb E Ti-12Mo-13Nb
Authors: Mansur Laiz Silva , Torres Juliana , Almeida Luiz Henrique de , Nunes Carlos Angelo , Santos Iranildes Dos , Gabriel Sinara Borborema 
Published: March 2021

Ligas de Ti, do tipo β tem sido desenvolvidas para aplicação biomédica. As vantagens destas ligas incluem seu baixo módulo de elasticidade, boa compatibilidade mecânica e, além disso, as variáveis de processamento podem ser controladas para obter propriedades desejadas. As ligas de Ti-β, na condição metaestável, podem ser fortemente endurecidas por precipitação de fases após envelhecimento. Várias microestruturas podem ser obtidas por diferentes tratamentos de envelhecimento os quais influenciam várias propriedades das ligas Diante do contexto, o objetivo deste trabalho foi estudar a influência da precipitação da fase ω na dureza das ligas Ti-10Mo-20Nb e Ti-12Mo-13Nb. O material nas diferentes condições foi caracterizado por difração de raios X e medida de microdureza. Os resultados mostraram que a precipitação da fase ω durante o envelhecimento acarretou no aumento da dureza das ligas Ti-10Mo-20Nb e Ti-12Mo-13Nb. Observou-se uma tendência da liga Ti-12Mo-13Nb apresentar os maiores valores de dureza. Ligas de Ti, do tipo β tem sido desenvolvidas para aplicação biomédica. As vantagens destas ligas incluem seu baixo módulo de elasticidade, boa compatibilidade mecânica e, além disso, as variáveis de processamento podem ser controladas para obter propriedades desejadas. As ligas de Ti-β, na condição metaestável, podem ser fortemente endurecidas por precipitação de fases após envelhecimento. Várias microestruturas podem ser obtidas por diferentes tratamentos de envelhecimento os quais influenciam várias propriedades das ligas Diante do contexto, o objetivo deste trabalho foi estudar a influência da precipitação da fase ω na dureza das ligas Ti-10Mo-20Nb e Ti-12Mo-13Nb.O material nas diferentes condições foi caracterizado por difração de raios X e medida de microdureza. Os resultados mostraram que a precipitação da fase ω durante o envelhecimento acarretou no aumento da dureza das ligas Ti-10Mo-20Nb e Ti-12Mo-13Nb. Observou-se uma tendência da liga Ti-12Mo-13Nb apresentar os maiores valores de dureza.
PENINGKATAN KESADARAN TERHADAP TERJADINYA TRAUMA MUSKULOSKELETAL PADA ANAK YANG BERMAIN GAME SMART PHONE BERBASIS AUGMENTED REALITY
Authors: Ismunandar Helmi , Fauzi Ahmad , Himayani Rani , Rahmanisa Soraya 
Published: March 2021

Latar Belakang: Augmented reality merupakan teknologi pengolahan gambar dan grafis komputer untuk menggabungkan konten digital ke dunia nyata. Pokemon Go merupakan salah satu game berbasis augmented reality yang mengharuskan pemainnya berburu monster di tempat yang berlokasi di dunia nyata. Pemain Pokemon Go beresiko mengalami kecelakaan saatmereka fokus pada layar smartphone sehingga mengabaikan lingkungan sekitarnya. Tujuan:Tujuan pengabdian ini adalah peningkatan pengetahuan dan kesadaran terhadap terjadinya trauma muskuloskeletal pada anak pengguna smart phone yang bermain game berbasis augmented reality. Metode: Pengabdian ini direncanakan menggunakan metode penyuluhan danpembagian kuisioner (pretes dan postes). Hasil: Kegiatan penyuluhan dan skreening ini diikuti oleh 50 orang yang terdiri dari orangtua, siswa, dan guru TK Titah Bunda yang datang menghadiri penyuluhan. Setelah dilakukan kegiatan penyuluhan, nilai hasil pengamatan (postes) didapatkan meningkat. Hampir semua peserta sudah paham sebanyak 47 peserta (94%), sementara 3 (6%) peserta lagi nilai post test <80. Kesimpulan: Setelah mendapatkan penyuluhan terdapat peningkatan pengetahuan masyarakat mengenai cedera saat bermain permainan berbasis augmented reality
¿Quién manda en casa? Influencia norteamericana, antiimperialismo y martinato en El Salvador (1911-1944)
Authors: Argueta Ricardo 
Published: March 2021

Este artículo constituye un avance de un trabajo más amplio que pretende analizar cómo han sido las relaciones políticas y económicas de El Salvador con los Estados Unidos durante el siglo XX. Se busca, por un lado, comprender los márgenes de autonomía o la larga relación heterónoma que El Salvador ha impreso en sus históricas relaciones con el gigante del norte; y, por otro, comprender cómo el movimiento social percibía la influencia norteamericana en el país.
ECA Estudios Centroamericanos, Vol. 63, No. 713-714, 2008: 165-178.
GAMBARAN METODE INKUIRI DAN PENERAPAN PADA PEMBELAJARAN PENGEMBANGAN DIRI (PKn) DI KELAS VI SD NEGERI NO.60 / II MUARA BUNGO KECAMATAN RIMBO TENGAH
Authors: Nopriani Nopriani 
Published: March 2021

Latar belakang penelitian ini yaitu tidak semua guru dalam pembelajaran PKn telah melaksanakan pembelajaran berbasis pendekatan siswa aktif. Untuk menciptakan pembelajaran aktif, guru dapat melaksanakan pembelajaran dengan menggunakan metode inkuiri. Oleh karena itu, tujuan penelitian ini yaitu mendeskripsikan mendeskripsikan gambaran metode inkuiri dan penerapannya pada pembelajaran pengembangan diri (PKn) di kelas VI SD Negeri 60/II Muara Bungo Kecamatan Rimbo Tengah. objek penelitian ini yaitu siswa Kelas VI SD Negeri.60/II Muara Bungo Kecamatan Rimbo Tengah Kabupaten Bungo dengan jumlah siswa 30 orang. Teknik pengumpulan data penelitian menggunakan teknik observasi, wawancara, dan tes. Hasil penelitian ini, yaitu (1) Penyusunan perencanaan pembelajaran dengan menggunakan metode inkuiri meliputi pokok bahasan, pertanyaan-pertanyaan yang mengacu kepada kesimpulan, alat peraga, media, dan lembar kerja siswa, (2) Pembelajaran dengan menggunakan metode inkuiri lebih menarik minat siswa dan dapat mendorong siswa untuk menemukan konsep akhir (kesimpulan) dari hasil pengamatan sesuai dengan waktu yang telah ditetapkan, (3) Hasil belajar dengan menggunakan metode inkuiri lebih baik dibanding dengan tidak menggunakan metode inkuiri. (4) hambatan-hambatan dalam pelaksanaan penelitian dapat teratasi. Berdasarkan hasil penelitian tesebut, dapat disimpulkan bahwa metode inkuiri dapat meningkatkan proses dan hasil pembelajaran PKn siswa Kelas VI SD Negeri 60/II Muara Bungo Kecamatan Rimbo Tengah Kabupaten Bungo.
PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS PENDEKATAN SAINTIFIK PADA MATERI TEOREMA PHYTAGORAS
Authors: Rukhmana Trisna , Ikhlas Al 
Published: March 2021

Penelitian ini adalah penelitian pengembangan (Research and Development) yangbertujuan untuk mengembangkan perangkat pembelajaran berbasis pendekatan saintifik pada materi Teorema Phytagoras yang valid, praktis dan efektif bagi siswa Sekolah Menegah Pertama. Prosedur pengembangan yang digunakan dalam penelitian ini adalah Model Thiagarajan atau Model 4-D yang terdiri atas empat tahap yaitu tahap pendefinisian (define), tahap perancangan (design), tahap pengembangan (develop), dan tahap penyebaran (disseminate). Perangkat pembelajaran berbasis pendekatan saintifik yang dikembangkan telah divalidasi oleh pakar dan praktisi serta telah mengalami revisi sehingga didapatkan hasil yang layak digunakan. Hasil penelitian menunjukkan bahwa perangkat pembelajaran berbasis pendekatan saintifik bersifat valid, praktis, dan efektif. Dikatakan efektif karena perangkat pembelajaran yang dikembangkan meliputi RPP, Buku Siswa dan LKS seluruhnya memenuhi kriteria kevalidan dengan kategori "Sangat Valid", dikatakan praktis karena perangkat pembelajaran ini memiliki derajat keterlaksanaan dengan kategori terlaksana seluruhnya dan nilai reliabilitasnya kategori “reliabel” dan dikatakan efektif karena telah memenuhi kriteria keefektifan.
MENINGKATKAN KOMPETENSI MENYUSUN RENCANA PELAKSANAAN PEMBELAJARAN (RPP) MELALUI BIMBINGAN BERKELANJUTAN PADA GURU MIN 1 PESISIR SELATAN TP2019/2020
Authors: Sakirin Sakirin 
Published: March 2021

Masalah dalam penelitian, yaitu rendahnya kemampuan guru menyusun RPP yang sesuai mdengan ketetan pada standar proses. Sedangkan tugas guru salahsatunya adalah merencanakan pembelajaran dengan baik agar tercapai tujuan pembelajaran secara maksimal.
Rumusan masalah penelitian yaitu “Apakah kemampuan menyusun Rencana Pelaksanaan Pembelajaran (RPP) dapat ditingkatkan melalui bimbingan berkelanjutan pada Guru MIN 1 Pesisir Barat TP 2019/2020?
Tujuan penelitian meningkatkan Kemampuan menyusun Rencana Pelaksanaan Pembelajaran (RPP) melalui bimbingan berkelanjutan pada Guru MIN 1 Pesisir Barat TP 2019/2020.
Hasil penelitian menunjukkan pada siklus I Kemampuan guru mencapai skor 37 atau mencapai 52% dan siklus II mencapai skor 68 atau mencapai 95%. Meningkat dari siklus ke siklus mencapai indikator keberhasilan penelitian.
Berdasarkan hasil penelitian ini diperoleh simpulan bahwa kemampuan menyusun Rencana Pelaksanaan Pembelajaran (RPP) dapat ditingkatkan melalui bimbingan berkelanjutan pada Guru MIN 1 Pesisir Barat TP 2019/2020
The role of bariatric surgery on kidney transplantation: A systematic review and meta-analysis
Authors: Lee Yung , Raveendran Luschman , Lovrics Olivia , Tian Chenchen , Khondker Adree , Koyle Martin A. , Farcas Monica , Doumouras Aristithes G. , Hong Dennis 
Published: March 2021

Introduction: Obesity (body mass index [BMI] >35 kg/m2) remains a relative contraindication for kidney transplant, while patients after kidney transplantation (KTX) are predisposed to obesity. The present study aims to investigate the role of bariatric surgery in improving transplant candidacy in patients prior to KTX, as well its safety and efficacy in KTX patients postoperatively.
Methods: A systematic search was conducted up to March 2020. Both comparative and non-comparative studies investigating the role of bariatric surgery before or after KTX were considered. Outcomes included change in BMI, rates of mortality and complications, and the rate of patients who underwent KTX following bariatric surgery. Pooled estimates were calculated using the random effects meta-analysis of proportions.
Results: Twenty-one studies were eligible for final review; 11 studies investigated the role of bariatric surgery before KTX. The weighted mean BMI was 43.4 (5.7) kg/m2 at baseline and 33.9 (6.3) kg/m2 at 29.1 months followup. After bariatric surgery, 83% (95% confidence interval [CI] 57–99) were successfully listed for KTX and 83% (95% CI 65–97) patients subsequently received successful KTX. Ten studies investigated the role of bariatric surgery after kidney transplant. Weighted mean baseline BMI was 43.8 (2.2) kg/m2 and mean BMI at 19.5 months followup was 34.2 (6.7) kg/m2. Overall, all-cause 30-day mortality was 0.5% for both those who underwent bariatric surgery before or after receiving a KTX. The results of this study are limited by the inclusion of only non-randomized studies, limited followup, and high heterogeneity.
Conclusions: Bariatric surgery may be safe and effective in reducing weight to improve KTX candidacy in patients with severe obesity and can also be used safely following KTX.
DNA metabarcoding of zooplankton communities: species diversity and seasonal variation revealed by 18S rRNA and COI
Authors: Zhao Lina , Zhang Xue , Xu Mengyue , Mao Ying , Huang Yuan 
Published: March 2021

Background
Zooplankton is an important component of aquatic organisms and has important biological and economical significance in freshwater ecosystems. However, traditional methods that rely on morphology to classify zooplankton require expert taxonomic skills. Moreover, traditional classification methods are time-consuming and labor-intensive, which is not practical for the design of conservation measures and ecological management tools based on zooplankton diversity assessment.

Methods
We used DNA metabarcoding technology with two different markers: the nuclear small subunit ribosomal RNA (18S rRNA) and mitochondrial cytochrome c oxidase (COI), to analyze 72 zooplankton samples collected in 4 seasons and 9 locations from the Sanmenxia Reservoir. We investigated seasonal changes in the zooplankton community and their relationship with water environmental factors.

Results
A total of 190 species of zooplankton were found, belonging to 12 phyla, 24 classes, 61 orders, 111 families, and 174 genera. Protozoa, especially ciliates, were the most diverse taxa. Richness and relative abundance of zooplankton showed significant seasonal changes. Both alpha and beta diversity showed seasonal trends: the diversity in summer and autumn was higher than that in winter and spring. The zooplankton diversity was most similar in winter and spring. By correlating metabarcoding data and water environmental factors, we proved that water temperature, chemical oxygen demand, total nitrogen and ammoniacal nitrogen were the main environmental factors driving the seasonal changes in zooplankton in the Sanmenxia Reservoir. Water temperature, followed by total nitrogen, were the most influential factors. This study highlights the advantages and some limitations of zooplankton molecular biodiversity assessment using two molecular markers.
Productivity of Chickpea (Cicer arietinum. L.) and Mustard (Brassica juncea) Intercropping System as Influenced by Different Row Ratios and Liquid Manures
Authors: Tiwari Dhananjay , Singh Vikram , Kumar Makani Sarath Chandra 
Published: March 2021

A field experiment was conducted during two consecutive rabi seasons of 2018-2019 and 2019-2020 at Crop Research Farm, Department of Agronomy, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (U.P.). The present experiment comprising with five intercropping systems viz. sole chickpea, sole mustard, chickpea + mustard (1:1), chickpea + mustard (2:1), chickpea + mustard (3:1) row ratios in replacement series and four liquid manures viz. control (no spray), panchagavya 3%, cow urine 10% and vermiwash 10%. Results revealed that among the row arrangements maximum plant height and dry weight of both crop (Chickpea and mustard) were recorded under chickpea + mustard 3:1 row ratio. However sole stand of both crop produced maximum yield attributes and yield. Whereas among the liquid manures foliar application of panchagavya 3% found to be superior over rest of the liquid manures.
Preliminary Study on the Effect of Methanolic Extract of Watermelon (Citrullus lanatus) Rind on Prednisolone Suppressed Immunity in Male Wistar Rats
Authors: Wike Nyejirime Young , Kelechi Mobisson Samuel , Onyeso Godspower , Amadi Okekem , Krukru Elizabeth Eepho 
Published: March 2021

Citrullus lanatus thumb (Cucurbitaceae) commonly called watermelon is widely consumed in this part of the world as food and medicine. This study was carried out to examine the effect of methanolic extract of watermelon (Citrullus lanatus) rind on prednisolone suppressed immunity in male wistar rats. A total of 20 male wistar rats weighing 150-294g were used in 4 groups with five rats each. Group 1, the control group was given distilled water and feed, Group 2 was given 200 mg/kg body weight of methanolic extract of watermelon rind, Group 3 rats were given 2.5 mg/kg body weight of prednisolone and Group 4 rats were given 2.5 mg/kg body weight of prednisolone and 200 mg/kg body weight of methanolic extract of watermelon rind. Prednisolone and the methanolic extract of watermelon rind were administered orally for a period of 30 days. Blood samples were collected by cardio puncture from the rats for white blood cell (WBC), lymphocyte, and granulocyte and monocyte counts at the end of the experiment. The data were statistically analysed using one-way ANOVA (Analysis of variance). Data were considered significant at p<0.05. The results obtained showed that methanolic extract of watermelon rind caused a significant increasen in immune function of rats when compared with the control and immune suppressed rats.
MPLA Case 1: Implementing Cone‐Beam CT in a Community Hospital
Authors: Wang Dongxu , Meis Gabbie , Ellet William , Kim Leonard , Stambaugh Cassandra , Gronberg Mary , Johnson Jennifer 
Published: March 2021

AbstractThis fictional case describes a managerial situation of implementing cone‐beam computed tomography faced by a solo medical physicist in a rural community hospital. The intended use of the case study, in either a facilitated learning session or self‐study, is to inspire the readers to discuss the situation, analyze the institutional and personal factors, apply relevant leadership skills, and propose action plans. This case study falls under the scope of, and is supported by, the Medical Physics Leadership Academy (MPLA). A sample facilitator’s guide or self‐study guide is included in the manuscript for reference by users of this case study.
MPLA Case 2: A junior physicist attempts to improve radiotherapy workflow
Authors: Wang Dongxu , Meis Gabbie , Gronberg Mary , Stambaugh Cassandra , Kim Leonard 
Published: March 2021

AbstractThis fictional case describes the challenging situation for a junior physicist, who joined her hometown's cancer center as a solo physicist after graduating from residency. She is concerned about providing optimal patient care as well as improving her work/life balance. She wonders how to move forward. The intended use of the case study, in either a facilitated learning session or self‐study, is to inspire the readers to discuss the situation, analyze the institutional and personal factors, apply relevant leadership skills, and propose action plans. This case study falls under the scope of, and is supported by, the Medical Physics Leadership Academy (MPLA). A sample facilitator's guide or self‐study guide is available upon request to the MPLA Cases Subcommittee.
High Performance β‐Ga2O3 Schottky Barrier Transistors with Large Work Function TMD Gate of NbS2 and TaS2
Authors: Kim Ki‐Tae , Jin Hye‐Jin , Choi Wonjun , Jeong Yeonsu , Shin Hyung Gon , Lee Yangjin , Kim Kwanpyo , Im Seongil 
Published: March 2021

AbstractGallium trioxide, β‐Ga2O3, has been recently studied due to its promising semiconducting properties as active material in transistors or Schottky diodes. Transistors with β‐Ga2O3 channels are mostly metal oxide field effect transistors (MOSFET), and they show very negative threshold voltages (Vth) in general. Metal semiconductor field effect transistors (MESFETs) with top gate are also reported with less negative Vth. Still, β‐Ga2O3 MESFETs are only a few. Here, bottom gate architecture β‐Ga2O3 MESFETs using transition metal dichalcogenide (TMD) NbS2 and TaS2 are reported. Due to the large work functions of those metallic TMDs, the MESFETs display minimum subthreshold swing of 61 mV dec−1, small Vth of −1.2 V, minimum OFF ID of ≈100 fA, and maximum ON/OFF current ratio of ≈108. Both β‐Ga2O3 Schottky diodes with TaS2 and NbS2 display good junction stability even after 300 °C measurements in 10 mTorr vacuum. When the β‐Ga2O3 MESFET with TaS2 gate is integrated as a switching FET into an organic light emitting diode (OLED) circuit, it demonstrates long‐term leakage endurance performance, maintaining an OLED brightness higher than 58% of the initial intensity after 100 s passes since the ON‐switching point, which is even superior to the performance of conventional a‐IGZO MOSFET switch.
Controlling Vanadate Nanofiber Interlayer via Intercalation with Conducting Polymers: Cathode Material Design for Rechargeable Aqueous Zinc Ion Batteries
Authors: Kim Jichang , Lee Se Hun , Park Changyong , Kim Hyung‐Seok , Park Jae‐Ho , Chung Kyung Yoon , Ahn Heejoon 
Published: March 2021

AbstractAqueous zinc ion batteries (ZIBs) are promising energy storage devices due to the high ionic conductivity of the aqueous electrolyte as well as the safety, eco‐friendliness, and low cost. Vanadium oxide‐based materials are attractive cathode materials for aqueous ZIBs because of their high capacity from their layered structure and multiple valences. However, it is difficult to achieve high cycle stability and rate capability due to the low electrical conductivity and trapping of diffused electrolyte cations within the crystal structure, limiting the commercialization of aqueous ZIBs. In this study, the authors propose a facile sonochemical method for controlling the interlayer of the vanadate nanofiber crystal structure using poly(3,4‐ethylene dioxythiophene) (PEDOT) to overcome the shortcomings of vanadium oxide‐based materials. In addition, the electrochemical correlation between the interplanar distance of the expanded vanadate layers by the insertion of PEDOT and the behavior of Zn2+ ions is investigated. As a result, the intercalation of the conducting polymer increases the electron pathway and extends the distance of the vanadate layers, which helps to increase the number of active sites inside the vanadate and accelerate the zinc ion intercalation/de‐intercalation process. Their findings may guide research on the next generation of ZIBs that can replace lithium ion batteries.
Fermi Velocity Reduction of Dirac Fermions around the Brillouin Zone Center in In2Se3–Bilayer Graphene Heterostructures
Authors: Wang Zhenyu , Hao Zhanyang , Yu Yayun , Wang Yuan , Kumar Shiv , Xie Xiangnan , Tong Mingyu , Deng Ke , Hao Yu‐Jie , Ma Xiao‐Ming , Zhang Ke , Liu Cai , Ma Mingxiang , Mei Jiawei , Wang Guang , Schwier Eike F. , Shimada Kenya , Xu Fufang , Liu Chang , Huang Wen , Wang Jianfeng , Jiang Tian , Chen Chaoyu 
Published: March 2021

AbstractEmergent phenomena such as unconventional superconductivity, Mott‐like insulators, and the peculiar quantum Hall effect in graphene‐based heterostructures are proposed to stem from the superlattice‐induced renormalization of (moiré) Dirac fermions at the graphene Brillouin zone corners. Understanding the corresponding band structure commonly demands photoemission spectroscopy with both sub‐meV resolution and large‐momentum coverage, beyond the capability of the current state‐of‐the‐art. Here the realization of moiré Dirac cones around the Brillouin zone center in monolayer In2Se3/bilayer graphene heterostructure is reported. The renormalization is evidenced by reduced Fermi velocity (≈23%) of the moiré Dirac cones and the reshaped Dirac point at the Γ point where they intersect. While there have been many theoretical predictions and much indirect experimental evidence, the findings here are the first direct observation of Fermi velocity reduction of the moiré Dirac cones. These features suggest strong In2Se3/graphene interlayer coupling, which is comparable with that in twisted bilayer graphene. The strategy expands the choice of materials in the heterostructure design and stimulates subsequent broad investigations of emergent physics at the sub‐meV energy scale.
Self‐Assembled Plasmonic Coaxial Nanocavities for High‐Definition Broad‐Angle Coloring in Reflection and Transmission
Authors: Ni Haibin , Krasavin Alexey V. , Zhang Lu , Ping An , Pan Chao , Cheng Jianxin , Wang Ming , Chang Jianhua , Zayats Anatoly V. 
Published: March 2021

AbstractResonant spectral scattering from metallic nanostructures is an attractive alternative approach to produce colors instead of using chemical pigments. Here, a technological platform based on self‐assembled arrays of coaxial plasmonic resonators is developed for generating a bright color gamut over the entire visible spectral range in both reflection and transmission, offering the potential for ultrahigh definition coloring over large areas. Unlike the approaches using the nanostructure periodicity to define colors, the developed method employs color engineering based on the localized plasmon resonances in nanocavities, therefore, providing a broad angular response and viewing angles of up to 40°. With the nanoscale dimensions of color pixels and an increased viewing angle range, the proposed approach allows achieving large‐area color patterns with local coloring controlled by postprocessing, important for display technology, anticounterfeiting and artistic applications.