bluuebunny/crossref_metadata_2025_split huggingface dataset:
El empoderamiento de la mujer en las luchas sociales por el derecho a vivir en la ciudad. Caso CODECO
Authors: Ayala de Villalba María Graciela , Soto Fernández José Albino , Castiñeira Giménez Jessica Graciela , Ríos Mercedes , Ruffinelli Rosa 
Published: December 2021

En la presente investigación se describe el empoderamiento de la mujer en las luchas sociales por el derecho a vivir en la Ciudad, identifica la participación de las mujeres en la organización comunitaria e identificar las prácticas y vivencias de liderazgo en la organización. Como técnica de investigación se utilizó la entrevista en profundidad a una lideresa de la organización a partir de una guía de preguntas abiertas con la finalidad de responder a los objetivos de la investigación. La recolección de datos se realizó a partir de la visita realizada a la organización como parte de la cátedra Abordaje profesional II, Área mujer, de la carrera de Trabajo Social. Para la construcción del mismo se trabajó conceptos como las movilizaciones, participaciones y luchas de las mujeres por los derechos a una vivienda, una mejor calidad de vida y las reivindicaciones de las mujeres organizadas del bañado norte desde CODECO sobre sus territorios. Como resultado se observa las desigualdades sociales que existen, como se da y caracteriza el empoderamiento de las mujeres en dichas luchas sociales, la participación activa de mujeres organizadas para el cumplimiento de los derechos y mejoramiento de la calidad de vida de la población.
No se suspende: explotación sexual comercial de la niñez y la adolescencia en tiempos de capital pandémico en la realidad brasileña y paraguaya
Authors: Alves Alan de Loiola 
Published: December 2021

El objetivo de este artículo es el de reflexionar sobre la explotación sexual comercial de la niñas, niños y adolescentes en Brasil y en Paraguay en tiempos de capital pandémico, específicamente definir qué es explotación sexual de niñas, niños y adolescentes, conocer las características de esta manifestación de la “cuestión social” en Brasil y en Paraguay. La metodología utilizada es mediante la teoría social crítica y recurriendo a una investigación exploratoria seguida de relevamiento bibliográfico y documental. La explotación sexual comercial infanto-juvenil es una manifestación de la “cuestión social” presente en todo el territorio brasileño y paraguayo, saltando las fronteras territoriales, ya que el mercado del sexo es internacional. La pandemia de COVID-19 y la crisis estructural del capital agravaron las desigualdades sociales y aumentaron la vulnerabilidad de niñas, niños y adolescentes delante de la explotación sexual comercial, destacando que el mercado del sexo no paró sus actividades. Esta realidad exige medidas de enfrentamiento por parte del Estado; sin embargo, su supresión exige la eliminación de todas las formas de desigualdad de este orden social, haciéndose necesario construir un nuevo modelo de sociedad.
Memanfaatkan Digital Marketing bagi Usaha Rumahan Sayuran Hidroponik dengan E-Commerce sebagai Media Promosi
Authors: Sarwindah Sarwindah , Laurentinus Laurentinus , Rizan Okkita , Hamidah Hamidah 
Published: December 2021

Penelitian ini bertujuan untuk menggunakan strategi digital marketing menggunakan e-commerce sebagai sarana promosi dimana budidaya sayur dan buah saat ini sedang dikembangkan dan dibudidayakan di industri. Alat-alat pertanian berlomba-lomba bagi petani untuk menanam di ladang - ladang kebun sayur. Salah satu metode yang digunakan dalam penelitian ini menggunakan model FAST dan memanfaatkan digital marketing e-commerce pada sayuran hidroponik. Oleh karena itu daya tarik setiap sayuran mempengaruhi penjualan dengan menggunakan strategi digital marketing dengan e-commerce. Sulitnya dan minimnya penjualan materi iklan di sentra atau bidang hidroponik menjadi dasar dibangunnya sistem informasi hidroponik yang dapat memanfaatkan digital marketing untuk meningkatkan periklanan promosi dan meningkatkan kinerja penjualan. Metode pencarian yang digunakan adalah model FAST, aplikasi dikembangkan menggunakan PHP, database yang digunakan MySQL, dan script dikembangkan menggunakan Sublime Text. Tujuan dari penelitian ini adalah memanfaatkan e-commerce untuk membuat sistem yang memberikan kemudahan promosi dan penjualan, sehingga memudahkan pemilik kebun atau pemilik usaha rumahan ini untuk melihat laporan transaksi dan penjualan lebih mudah. Dengan demikian, semua pengelolaan data yang ada dapat dipantau melalui sistem sebagai proses yang lebih sederhana.
TỐI ƯU CẤU TRÚC QUỸ ĐẠO HỆ THỐNG VỆ TINH GIÁM SÁT LIÊN TỤC KHOẢNG KHÔNG GIAN VŨ TRỤ GẦN TRÁI ĐẤT
Authors: Quý  
Published: December 2021

Bài báo đề xuất một cách tiếp cận mới: giám sát liên tục khoảng không gian vũ trụ dạng lớp cầu đồng tâm với Trái đất dựa trên việc xây dựng hệ thống vệ tinh hai tầng quỹ đạo có hướng giám sát ngược nhau, trong đó, mỗi tầng vệ tinh là một hệ thống con độc lập theo mô hình Delta của J.G. Walker (Walker constellation). Mô hình hóa và phân tích bài toán tối ưu cấu trúc quỹ đạo hệ thống vệ tinh hai tầng theo tiêu chí tổng vận tốc đặc trưng hệ thống là nhỏ nhất thành các bài toán dạng truyền thống dễ giải quyết hơn (tối ưu cấu trúc quỹ đạo hệ thống vệ tinh một tầng theo tiêu chí tổng số vệ tinh trong hệ thống là nhỏ nhất). Bài báo cũng trình bày cụ thể phương pháp giải các bài toán này. Dựa trên kết quả tính toán thành lập catalog các phương án cấu trúc quỹ đạo tối ưu của hệ thống vệ tinh hai tầng đưa ra các phân tích, đánh giá, so sánh kết quả đạt được với cấu trúc hệ thống vệ tinh một tầng truyền thống.
NGHIÊN CỨU THU NHẬN INULO OLIGOSACCHARIDE BẰNG THỦY PHÂN INULIN THU NHẬN TỪ RAU DIẾP XOĂN (Lactuca sativa)
Authors: Cường  
Published: December 2021

Inulo-oligosaccharide (IOS) là một các carbohydrate, được tạo thành từ một chuỗi ngắn các phân tử fructose, được phân loại như một oligosaccharide. IOS được sản xuất bởi quá trình thủy phân inulin sau khi chiết. Inulin được chia nhỏ bằng cách sử dụng enzyme inulinase thành chuỗi từ 2-10,với DP trung bình là 4. Trong nghiên cứu này, chúng tôi thiết kế mô hình thí nghiệm nhằm xác định nồng độ cơ chất, enzyme, nhiệt độ, pH thích hợp cho quá trình thủy phân bột nulin từ rau diếp xoăn. Nồng độ enzym nghiên cứu từ 2,5 - 30U/g cơ chất, dải nhiệt độ 40oC-60oC, khoảng pH 4-7 trong thời gian 1-7 giờ. Nồng độ enzym và nhiệt độ là các yếu tố có ảnh hưởng nhiều đến quá trình thủy phân inulin thu nhận inulo-oligosaccharide bằng enzyme. Nồng độ cơ chất 50g/l, tỷ lệ enzyme/cơ chất 30U/g và nhiệt độ 60oC hiệu suất thu nhận inulo oligosaccharide thu được đạt cao nhất là 68 đến 75%.
Increasing the Yield of Powder and Bioactive Materials during Extraction and Spray Drying of Dragon Fruit Skin Extracts
Authors: Shofinita Dian , Bindar Yazid , Samadhi Tjokorde Walmiki , Choliq Najwa Shufia , Jaelawijaya Arwinda Aprillia 
Published: December 2021

One potential utilization of dragon fruit skin is to produce bioactive materials as natural antioxidants and colorants for the food industry by extraction and spray drying. This study investigated the quality (total phenolic compounds/TPC, betacyanin and betaxanthin contents, and antioxidant activity) of the extracts and spray-dried products, and the quantity (powder yield) obtained by the use of different types and amounts of spray drying agents. Two drying agents were introduced during spray drying, i.e. maltodextrin and whey protein isolate (WPI). The result showed that a lower extraction solvent to solid ratio may result in a lower yield of TPC, betacyanin and betaxanthin contents, and also in antioxidant activity of the dragon fruit skin extract. In addition, maltodextrin and WPI were found to be able to significantly increase the yield from spray drying. The highest yield (72.7 ± 8.4%) was obtained with the use of 40% maltodextrin as drying agent, while the control yielded 9.5 ± 1.8%. Furthermore, it was found that the spray-dried product could recover more than 90% of the TPC and betacyanin in the extracts, which indicates that spray drying may be suitable for heat-sensitive materials.
Realizing High and Stable Electrocatalytic Oxygen Evolution for Iron‐Based Perovskites by Co‐Doping‐Induced Structural and Electronic Modulation
Authors: She Sixuan , Zhu Yinlong , Wu Xinhao , Hu Zhiwei , Shelke Abhijeet , Pong Way‐Faung , Chen Yubo , Song Yufei , Liang Mingzhuang , Chen Chien‐Te , Wang Huanting , Zhou Wei , Shao Zongping 
Published: December 2021

AbstractOxygen evolution reaction (OER) is a vital electrochemical process for various energy conversion and fuel production technologies. Co/Ni‐rich perovskite oxides are extensively studied as promising alternatives to precious‐metal catalysts; however, low‐cost and earth‐abundant iron (Fe)‐rich perovskites are rarely investigated to date due to their poor activity and durability. This study reports an Fe‐rich Sr0.95Ce0.05Fe0.9Ni0.1O3−δ (SCFN) perovskite oxide with minor Ce/Ni co‐doping in A/B sites as a high‐performance OER electrocatalyst. Impressively, SCFN shows more than an order of magnitude enhancement in mass‐specific activity compared to the SrFeO3−δ (SF) parent oxide, and delivers an attractive small overpotential of 340 mV at 10 mA cm−2, outperforming many Co/Ni‐rich perovskite oxides ever reported. Additionally, SCFN displays robust operational durability with negligible activity loss under alkaline OER conditions. The increased activity and stability of SCFN can be ascribed to co‐doping‐induced synergistic promotion between structural and electronic modulation, where Ce doping facilitates the formation of a 3D corner‐sharing cubic structure and Ni doping gives rise to strong electronic interactions between active sites, which is key to achieving a highly active long‐life catalyst. Importantly, this strategy is universal and can be extended to other Fe‐based parent perovskite oxides with high structural diversity.
Infrared Photodetectors Based on 2D Materials and Nanophotonics
Authors: Zha Jiajia , Luo Mingcheng , Ye Ming , Ahmed Tanveer , Yu Xuechao , Lien Der‐Hsien , He Qiyuan , Lei Dangyuan , Ho Johnny C. , Bullock James , Crozier Kenneth B. , Tan Chaoliang 
Published: December 2021

Abstract2D materials, such as graphene, transition metal dichalcogenides, black phosphorus, and tellurium, have been demonstrated to be promising building blocks for the fabrication of next‐generation high‐performance infrared (IR) photodetectors with diverse device architectures and impressive device performance. Integrating IR photodetectors with nanophotonic structures, such as surface plasmon structures, optical waveguides, and optical cavities, has proven to be a promising strategy to maximize the light absorption of 2D absorbers, thus enhancing the detector performance. In this review, the state‐of‐the‐art progress of IR photodetectors is comprehensively summarized based on 2D materials and nanophotonic structures. First, the advantages of using 2D materials for IR photodetectors are discussed. Following that, 2D material‐based IR detectors are classified based on their composition, and their detection mechanisms, key figures‐of‐merit, and the principle of absorption enhancement are discussed using nanophotonic approaches. Then, recent advances in 2D material‐based IR photodetectors are reviewed, categorized by device architecture, i.e., photoconductors, van der Waals heterojunctions, and hybrid systems consisting of 2D materials and nanophotonic structures. The review is concluded by providing perspectives on the challenges and future directions of this field.
Template‐Enabled Biofabrication of Thick 3D Tissues with Patterned Perfusable Macrochannels
Authors: Davoodi Elham , Montazerian Hossein , Zhianmanesh Masoud , Abbasgholizadeh Reza , Haghniaz Reihaneh , Baidya Avijit , Pourmohammadali Homeyra , Annabi Nasim , Weiss Paul S. , Toyserkani Ehsan , Khademhosseini Ali 
Published: December 2021

AbstractInterconnected pathways in 3D bioartificial organs are essential to retaining cell activity in thick functional 3D tissues. 3D bioprinting methods have been widely explored in biofabrication of functionally patterned tissues; however, these methods are costly and confined to thin tissue layers due to poor control of low‐viscosity bioinks. Here, cell‐laden hydrogels that could be precisely patterned via water‐soluble gelatin templates are constructed by economical extrusion 3D printed plastic templates. Tortuous co‐continuous plastic networks, designed based on triply periodic minimal surfaces (TPMS), serve as a sacrificial pattern to shape the secondary sacrificial gelatin templates. These templates are eventually used to form cell‐encapsulated gelatin methacryloyl (GelMA) hydrogel scaffolds patterned with the complex interconnected pathways. The proposed fabrication process is compatible with photo‐crosslinkable hydrogels wherein prepolymer casting enables incorporation of high cell populations with high viability. The cell‐laden hydrogel constructs are characterized by robust mechanical behavior. In vivo studies demonstrate a superior cell ingrowth into the highly permeable constructs compared to the bulk hydrogels. Perfusable complex interconnected networks within cell‐encapsulated hydrogels may assist in engineering thick and functional tissue constructs through the permeable internal channels for efficient cellular activities in vivo.
Engineered Cell‐Secreted Extracellular Matrix Modulates Cell Spheroid Mechanosensing and Amplifies Their Response to Inductive Cues for the Formation of Mineralized Tissues
Authors: Gonzalez‐Fernandez Tomas , Tenorio Alejandro J. , Saiz Jr Augustine M. , Leach J. Kent 
Published: December 2021

AbstractThe clinical translation of mesenchymal stromal cell (MSC)‐based therapies remains challenging due to rapid cell death and poor control over cell behavior. Compared to monodisperse cells, the aggregation of MSCs into spheroids increases their tissue‐forming potential by promoting cell–cell interactions. However, MSCs initially lack engagement with an endogenous extracellular matrix (ECM) when formed into spheroids. Previously the instructive nature of an engineered, cell‐secreted ECM is demonstrated to promote survival and differentiation of adherent MSCs. Herein, it is hypothesized that the incorporation of this cell‐secreted ECM during spheroid aggregation would enhance MSC osteogenic potential by promoting cell–matrix and cell–cell interactions. ECM‐loaded spheroids contained higher collagen and glycosaminoglycan content, and MSCs exhibited increased mechanosensitivity to ECM through Yes‐associated protein (YAP) activation via integrin α2β1 binding. ECM‐loaded spheroids sustained greater MSC viability and proliferation and are more responsive to soluble cues for lineage‐specific differentiation than spheroids without ECM or loaded with collagen. The encapsulation of ECM‐loaded spheroids in instructive alginate gels resulted in spheroid fusion and enhanced osteogenic differentiation. These results highlight the clinical potential of ECM‐loaded spheroids as building blocks for the repair of musculoskeletal tissues.
Engineering Metallic Heterostructure Based on Ni3N and 2M‐MoS2 for Alkaline Water Electrolysis with Industry‐Compatible Current Density and Stability
Authors: Wu Tong , Song Erhong , Zhang Shaoning , Luo Mengjia , Zhao Chendong , Zhao Wei , Liu Jianjun , Huang Fuqiang 
Published: December 2021

AbstractAlkaline water electrolysis is commercially desirable to realize large‐scale hydrogen production. Although nonprecious catalysts exhibit high electrocatalytic activity at low current density (10–50 mA cm−2), it is still challenging to achieve industrially required current density over 500 mA cm−2 due to inefficient electron transport and competitive adsorption between hydroxyl and water. Herein, the authors design a novel metallic heterostructure based on nickel nitride and monoclinic molybdenum disulfide (Ni3N@2M‐MoS2) for extraordinary water electrolysis. The Ni3N@2M‐MoS2 composite with heterointerface provides two kinds of separated reaction sites to overcome the steric hindrance of competitive hydroxyl/water adsorption. The kinetically decoupled hydroxyl/water adsorption/dissociation and metallic conductivity of Ni3N@2M‐MoS2 enable hydrogen production from Ni3N and oxygen evolution from the heterointerface at large current density. The metallic heterostructure is proved to be imperative for the stabilization and activation of Ni3N@2M‐MoS2, which can efficiently regulate the active electronic states of Ni/N atoms around the Fermi‐level through the charge transfer between the active atoms of Ni3N and MoMo bonds of 2M‐MoS2 to boost overall water splitting. The Ni3N@2M‐MoS2 incorporated water electrolyzer requires ultralow cell voltage of 1.644 V@1000 mA cm−2 with ≈100% retention over 300 h, far exceeding the commercial Pt/C║RuO2 (2.41 V@1000 mA cm−2, 100 h, 58.2%).
Metal‐Organic Framework Glass Anode with an Exceptional Cycling‐Induced Capacity Enhancement for Lithium‐Ion Batteries
Authors: Gao Chengwei , Jiang Zhenjing , Qi Shibin , Wang Peixing , Jensen Lars Rosgaard , Johansen Morten , Christensen Christian Kolle , Zhang Yanfei , Ravnsbæk Dorthe Bomholdt , Yue Yuanzheng 
Published: December 2021

AbstractMetal‐organic frameworks (MOFs) hold great promise as high‐energy anode materials for next‐generation lithium‐ion batteries (LIBs) due to their tunable chemistry, pore structure and abundant reaction sites. However, the pore structure of crystalline MOFs tends to collapse during lithium‐ion insertion and extraction, and hence, their electrochemical performances are rather limited. As a critical breakthrough, a MOF glass anode for LIBs has been developed in the present work. In detail, it is fabricated by melt‐quenching Cobalt‐ZIF‐62 (Co(Im)1.75(bIm)0.25) to glass, and then by combining glass with carbon black and binder. The derived anode exhibits high lithium storage capacity (306 mAh g−1 after 1000 cycles at of 2 A g−1), outstanding cycling stability, and superior rate performance compared with the crystalline Cobalt‐ZIF‐62 and the amorphous one prepared by high‐energy ball‐milling. Importantly, it is found that the Li‐ion storage capacity of the MOF glass anode continuously rises with charge–discharge cycling and even tripled after 1000 cycles. Combined spectroscopic and structural analyses, along with density functional theory calculations, reveal the origin of the cycling‐induced enhancement of the performances of the MOF glass anode, that is, the increased distortion and local breakage of the CoN coordination bonds making the Li‐ion intercalation sites more accessible.
Large‐Area Fabrication of High Performing, Flexible, Transparent Conducting Electrodes Using Screen Printing and Spray Coating Techniques
Authors: Govind Remya K. , Mondal Indrajit , Baishya Kaushik , Ganesha Mukhesh K. , Walia Sunil , Singh Ashutosh K. , Kulkarni Giridhar U. 
Published: December 2021

AbstractFabrication of large‐area transparent conducting electrodes (TCEs) of high performance through cost‐effective high throughput methods has been an area of intensive research. In this context, the fabrication of flexible, 25 cm2 wide TCEs with high figure of merit (FoM) (≈494 Ω−1 ) is achieved by two roll‐to‐roll compatible processes, namely screen printing and spray coating, by suitably modifying crackle lithography in a cost‐effective manner. The fabricated TCEs exhibit low sheet resistance (<10 Ω □−1) and high transmittance (≈86–90%) in the visible region. The TCEs are shown to be highly bendable, the change in the sheet resistance is only ≈2% up on 6000 bending cycles. The application of these TCEs as transparent bendable uniform Joule heaters and surface capacitive touchscreens has also been demonstrated. The TCEs are, thus, just as good as any TCE produced using spin‐coating or similar small area coating techniques.
Highly‐Efficient Solar Steam Generation with Real Time Salinity Monitoring for Seawater Desalination
Authors: Xiong Meiyu , Dong Suwei , Xu Yunfan , Liu Cihui , Di Yunsong , Xing Fangjian , Wu Shuyi , Zhang Jinlei , Yu Liyan , Dong Lifeng , Gan Zhixing 
Published: December 2021

AbstractSolar steam generation (SSG) has attracted increasing interest due to its huge potential in seawater desalination. However, SSG performance is not yet satisfactory due to limited photothermal efficiency and crude thermal management. In addition, real‐time salinity monitoring is still lacking. Herein, inspired by the transpiration of trees, an umbrella‐shaped 3D structure is designed for high‐performance SSG. The water evaporation rate under one sun irradiation is as high as 2.17 kg m−2h−1, outcompeting most previous work. The high evaporation rate is primarily attributed to the excellent photothermal effect and maximized utilization of the heat via enhancing water transport and enlarging the effective evaporation area. Due to the existence of an air gap between the umbrella cover and the bulk water, an extra thermal insulator is not needed. Thus, the SSG device is more compact and stable. Moreover, a flexible photonic crystal membrane is constructed to in situ monitor the salinity by the structural color via a visualization method. This SSG device keeps high evaporation rates in seawater desalination, showing great prospects for practical applications.
Unveiling Alternating Current Electronic Properties at Ferroelectric Domain Walls
Authors: Schultheiß Jan , Rojac Tadej , Meier Dennis 
Published: December 2021

AbstractFerroelectric domain walls exhibit a range of interesting electrical properties and are now widely recognized as functional 2D systems for the development of next‐generation nanoelectronics. A major achievement in the field is the development of a fundamental framework that explains the emergence of enhanced electronic direct‐current conduction at the domain walls. Here, the much less explored behavior of ferroelectric domain walls under applied alternating‐current (AC) voltages is discussed. An overview of the recent advances in the nanoscale characterization is provided that allows for resolving the dynamic responses of individual domain walls to AC fields. In addition, different examples are presented, showing the unusual AC electronic properties that arise at neutral and charged domain walls in the kilo‐ to gigahertz regime. It is concluded with a discussion about the future direction of the field and novel application opportunities, expanding domain‐wall‐based nanoelectronics into the realm of AC technologies.
Toward Functionalized Ultrathin Oxide Films: The Impact of Surface Apical Oxygen
Authors: Gabel Judith , Pickem Matthias , Scheiderer Philipp , Dudy Lenart , Leikert Berengar , Fuchs Marius , Stübinger Martin , Schmitt Matthias , Küspert Julia , Sangiovanni Giorgio , Tomczak Jan M. , Held Karsten , Lee Tien‐Lin , Claessen Ralph , Sing Michael 
Published: December 2021

AbstractThin films of transition metal oxides open up a gateway to nanoscale electronic devices beyond silicon characterized by novel electronic functionalities. While such films are commonly prepared in an oxygen atmosphere, they are typically considered to be ideally terminated with the stoichiometric composition. Using the prototypical correlated metal SrVO3 as an example, it is demonstrated that this idealized description overlooks an essential ingredient: oxygen adsorbing at the surface apical sites. The oxygen adatoms, which are present even if the films are kept in an ultrahigh vacuum environment and not explicitly exposed to air, are shown to severely affect the intrinsic electronic structure of a transition metal oxide film. Their presence leads to the formation of an electronically dead surface layer but also alters the band filling and the electron correlations in the thin films. These findings highlight that it is important to take into account surface apical oxygen or—mutatis mutandis—the specific oxygen configuration imposed by a capping layer to predict the behavior of ultrathin films of transition metal oxides near the single unit‐cell limit.