108 research outputs found
Binder-free and carbon-free 3D porous air electrode for Li-O2 batteries with high efficiency, high capacity, and long life
Pt-Gd alloy polycrystalline thin film is deposited on 3D nickel foam by pulsed laser deposition method serving as a whole binder/carbon-free air electrode, showing great catalytic activity enhancement as an efficient bifunctional catalyst for the oxygen reduction and evolution reactions in lithium oxygen batteries. The porous structure can facilitate rapid O2 and electrolyte diffusion, as well as forming a continuous conductive network throughout the whole energy conversion process. It shows a favorable cycle performance in the full discharge/charge model, owing to the high catalytic activity of the Pt-Gd alloy composite and 3D porous nickel foam structure. Specially, excellent cycling performance under capacity limited mode is also demonstrated, in which the terminal discharge voltage is higher than 2.5 V and the terminal charge voltage is lower than 3.7 V after 100 cycles at a current density of 0.1 mA cmâ2. Therefore, this electrocatalyst is a promising bifunctional electrocatalyst for lithium oxygen batteries and this depositing high-efficient electrocatalyst on porous substrate with polycrystalline thin film by pulsed laser deposition is also a promising technique in the future lithium oxygen batteries research
A Case Study on Strengthening Food Security and Agribusiness Innovation by Implementing the SAAMBAT Project in Cambodia
In Cambodia, the government still faces agricultural productivity, labour competency, and climate change susceptibility problems. The government and the International Fund for Agriculture Development (IFAD) have initiated a Sustainable Asset for Agricultural Market, Business, and Trade (SAAMBAT) collaboration project. However, limited studies were observed about the project. A desk study using multiple data resources and project reports was performed to investigate the practical implementation of SAMBAAT in Cambodia. The data were available online and retrieved from the Cambodian government, ADB, IFAD, and The World Bank. The expert acquisition was also conducted by confirming the analysis and findings to professional third parties involving in the project monitoring. After the project was implemented, the local farmers started diversifying their value-added crops and operating their farming system by following Good Agricultural Practices (GAP) standards. Besides, they could also adopt new innovative technologies to increase agricultural productivity, improving national food security establishment, and using digital apps to support their agribusiness sustainability, such as an e-agriculture platform developed by trained local youth. SAAMBAT is recommended to encourage the Techno Start-Up Center (TSC) to develop its organizational capability and business model to boost the digital economyâs innovation, specifically to support rural agribusiness growth. Further improvement and evaluation are required to maintain the process and enlarge the projectâs impacts
Core-shell Co/CoO integrated on 3D nitrogen doped reduced graphene oxide aerogel as an enhanced electrocatalyst for the oxygen reduction reaction
Here, we demonstrate that Cobalt/cobalt oxide core-shell nanoparticles integrated on nitrogen-doped (N-doped) three-dimensional reduced graphene oxide aerogel-based architecture (Co/CoO-NGA) were synthesized through a facile hydrothermal method followed by annealing treatment. The unique endurable porous structure could provide sufficient mass transfer channels and ample active sites on Co/CoO-NGA to facilitate the catalytic reaction. The synthesized Co/CoO-NGA was explored as an electrocatalyst for the oxygen reduction reaction, showing comparable oxygen reduction performance with excellent methanol resistance and better durability compared with Pt/C
Core-shell Co/CoO integrated on 3D nitrogen doped reduced graphene oxide aerogel as an enhanced electrocatalyst for the oxygen reduction reaction
Here, we demonstrate that Cobalt/cobalt oxide core-shell nanoparticles integrated on nitrogen-doped (N-doped) three-dimensional reduced graphene oxide aerogel-based architecture (Co/CoO-NGA) were synthesized through a facile hydrothermal method followed by annealing treatment. The unique endurable porous structure could provide sufficient mass transfer channels and ample active sites on Co/CoO-NGA to facilitate the catalytic reaction. The synthesized Co/CoO-NGA was explored as an electrocatalyst for the oxygen reduction reaction, showing comparable oxygen reduction performance with excellent methanol resistance and better durability compared with Pt/C
Penguatan Kelembagaan Korporasi Pembudidaya Tambak Udang dan Ikan di Kawasan Pertambakan di Indonesia
Penelitian ini dilatarbelakangi oleh lambatnya pembentukan korporasi pada kawasan pertambakan di Indonesia. Tujuan penelitian adalah: (i) melakukan pemetaan keragaman penguasaan luasan tambak di berbagai pulau dan provinsi dalam kaitannya dengan pengembangan korporasi; (ii) mengidentifikasi peran komponen kelembagaan korporasi pertambakan; (iii) menyusun strategi pengembangan kelembagaan korporasi tambak di Indonesia, yang dituangkan pada model generic korporasi petambak untuk kawasan tambak dengan luas minimal 100 hektar. Pendekatan metodologis yang diterapkan dalam penelitian ini adalah pendekatan kuantitatif dengan menggunakan analisis statistik deskriptif. Data Sensus Pertanian 2013 (jumlah sampel 138.865 responden) dan data hasil survey tahun 2023 di Kabupaten Brebes dan Kabupaten Indramayu (100 responden) digunakan untuk menjawab hipotesis penelitian ini. Hasil penelitian menunjukkan korporasi pembudidaya tambak dapat dibentuk pada beberapa lokasi di provinsi tertentu, dengan lima komponen korporasi walaupun belum berperan. Model generik korporasi pembudidaya tambak tersebut, menjadi basis untuk membangun bisnis on farmâoff farm korporasi dengan memfungsikan lima komponen korporasi pembudidaya tambak melalui prinsip konsolidasi, kolaborasi dan integrasi. Implikasi kebijakan dari hasil penelitian ini adalah relevansi pemahaman bahwa: (i) identifikasi dan pemetaan sebaran petambak dan luas kawasan pertambakan harus ditempatkan sebagai langkah paling awal dalam pengembangan korporasi pada sektor kelautan dan perikanan, (ii) petambak mutlak harus diorganisasikan dalam Gapokkan sehingga dapat mengatasi masalah produksi dan pasar, dan (iii) komponen-komponen korporasi dari model generik merupakan hal yang vital di dalam upaya membangun korporasi pada satu kawasan pertambakan. Tittle: Strengthtening Institution of Shrimp and Fish Farmer Corporates in the Brackish Water Area in IndonesiaThis research is motivated by the slow formation of corporations in brackish water areas in Indonesia. The aims of the study were: (i) Mapping the diversity of pond control over various islands and provinces about corporate development; (ii) identifying the role of the institutional components of the aquaculture corporation; (iii) developing a strategy for developing pond corporation institutions in Indonesia, on the generic model of corporation farmers for pond areas with a minimum area of 100 hectares. The methodology of the study is a quantitative approach using descriptive statistical analysis. The answer research hypothesis used Agricultural Census data for 2013 (sample of 138,865 respondents) and survey data for 2023 in Brebes and Indramayu Regencies (100 respondents). The study highlights that pond cultivator corporations can be formed in several locations in certain provinces, with five corporate components, even though they have not played a role yet. The generic model of the pond cultivator corporation is the basis for building a corporate on farm â off farm business by functioning the five components of the pond cultivator corporation through the principles of consolidation, collaboration and integration. The policy implications of the results of this study are the relevance of the understanding that: (i) identification and mapping of the distribution of farmers and the area of brackish water must be placed as the earliest step in corporate development in the Maritime and Fisheries Sector, (ii) absolute farmers must be organized into Gapokkan so that they can overcome production and market issues, and (iii) the corporate components of the generic model are vital in the effort to build a corporation in a brackish water area
Influence of disorder on the in-field Jc of MgB2 wires using highly active pyrene
In this work, we report on significantly enhanced critical current density (Jc) in MgB2 superconductor that was easily obtained by doping with a hydrocarbon, highly active pyrene (C16H10), and using a sintering temperature as low as âž 600â°C. The processing advantages of the C16H10 additive include production of a highly active carbon (C) source, an increased level of disorder, and the introduction of small grain size, resulting in enhancement of Jc
Peak effect in the critical current of type II superconductors with strong magnetic vortex pinning
We perform 2D Langevin simulations studying the peak effect (PE) of the critical current taking into account the temperature dependence of the competing forces. We observe and report that the PE results from the competition of vortex-vortex interactions and vortex-pin interactions which have different temperature dependencies. The simulations reveal that the PE can take place only for certain pinning strengths, densities of pinning centres, and driving forces, which is in good agreement with experiments. No apparent vortex order-disorder transition is observed across the PE regime. In addition, the PE is a dynamical phenomenon, and thermal fluctuations can speed up the process for the formation of the PE
Growth of Ca3Co4O9 films: Simple chemical solution deposition and stress induced spontaneous dewetting
āļāļīāļāļāļīāļāļĨāļāļāļāļāļēāļĢāļĄāļĩāļŠāđāļ§āļāļĢāđāļ§āļĄāļāļāļāļāļđāđāļāļĄāļ§āļąāļĒāļĢāļļāđāļāļāļēāļ§āļāļĩāļ āļāđāļāļāļēāļĢāļĢāļąāļāļĢāļđāđāļ āļēāļāļĨāļąāļāļĐāļāđāļāļļāļāļŦāļĄāļēāļĒāļāļĨāļēāļĒāļāļēāļāļāļ§āļēāļĄāļĢāļđāđāļŠāļķāļāļāļđāļāļāļąāļāļāļąāļāļŠāļāļēāļāļāļĩāđ āđāļĨāļ°āļāļ§āļēāļĄāļāļąāđāļāđāļāđāļāļīāļāļāļĪāļāļīāļāļĢāļĢāļĄāļāļĩāđāļĄāļĩāļāđāļāļāļąāļāļŦāļ§āļąāļāļ āļđāđāļāđāļ āļāļĢāļ°āđāļāļĻāđāļāļĒ āļāļĢāļāļĩāļĻāļķāļāļĐāļēāļĨāļ°āļāļĢāđāļāļĢāļāļąāļĻāļāđāđāļāļĒāđāļĢāļ·āđāļāļ āđāļāļĨāļĢāļąāļāļāļąāļāļāđāļ§āļĒāđāļāđāļāļ (I Told Sunset About Tou)
Master of Business Administration (Hospitality and Tourism Management (International Program)), 2023Film tourism has gained significant attention in the past decade, however, there is a lack of research that addresses audience perceptions and behavioral intentions regarding an unvisited destination after watching a film or television (TV) series. This study aims to fill this gap by applying audience involvement theory to examine its influence on audiencesâ perceived destination image, place attachment, and behavioral intentions toward the depicted destination in the pre-visit stage. The Thai series TV "I Told Sunset About You" was conducted as a case study and a quantitative method was used. A self-administered questionnaire was employed as the research instrument. 564 young Chinese who had seen the TV series but had never visited Phuket, Thailand, were recruited as participants using a non-probability sampling method. Descriptive statistical analysis was utilized to summarize the participants' profiles and their level of involvement in the series TV, their perceptions of the destination's image, their attachment to the place, and their behavioral intentions toward Phuket. A confirmatory factor analysis was conducted to assess the reliability and validity of the proposed theoretical model. Structural equation modeling was applied to evaluate the relationship between audience involvement, destination image, place attachment, and behavioral intentions. The results of this study indicate that the level of involvement in a TV series has a positive effect on perceptions of destination image and attachment to the featured destination. In addition, destination image has a positive effect on place attachment. Furthermore, both destination image and place attachment have a significant influence on audience behavioral intentions in the pre-visit stage. This study offers unique theoretical and managerial implications for film tourism research and destination marketing organizations (DMOs).āļāļēāļĢāļāđāļāļāđāļāļĩāđāļĒāļ§āđāļāļīāļāļ āļēāļāļĒāļāļāļĢāđāđāļāđāļāļŦāļąāļ§āļāđāļāļāļĩāđāđāļāđāļĢāļąāļāļāļ§āļēāļĄāļŠāļāđāļāļāļĒāđāļēāļāļĄāļēāļāđāļāļāļĻāļ§āļĢāļĢāļĐāļāļĩāđ āļāđāļēāļāļĄāļēāļāļĒāđāļēāļāđāļĢāļāđāļāļēāļĄāļāļēāļāļ§āļīāļāļąāļĒāđāļāļĩāđāļĒāļ§āļāļąāļāļāļēāļĢāļĢāļąāļāļĢāļđāđāļāļāļāļāļđāđāļāļĄāđāļĨāļ°āļāļ§āļēāļĄāļāļąāđāļāđāļāđāļāļīāļāļāļĪāļāļīāļāļĢāļĢāļĄāđāļāļĩāđāļĒāļ§āļāļąāļ āļāļļāļāļŦāļĄāļēāļĒāļāļĨāļēāļĒāļāļēāļāļāļēāļĢāļāđāļāļāđāļāļĩāđāļĒāļ§āļāļĩāđāļĒāļąāļāđāļĄāđāđāļāļĒāđāļāđāļĒāļ·āļāļāļŦāļĨāļąāļāļāļēāļāļāļēāļĢāļĢāļąāļāļāļĄāļ āļēāļāļĒāļāļāļĢāđāļŦāļĢāļ·āļāļāļĩāļĢāļĩāļŠāđāđāļāļĢāļāļąāļĻāļāđ
(TV) āļĒāļąāļāļĄāļĩāđāļĄāđāļĄāļēāļāļāļąāļāļāļēāļĢāļĻāļķāļāļĐāļēāļāļĩāđāļĄāļĩāļ§āļąāļāļāļļāļāļĢāļ°āļŠāļāļāđāļŦāļĨāļąāļāđāļāļ·āđāļāđāļāļīāļĄāđāļāđāļĄāļāļāļāđāļāļ§āļēāļĄāļĢāļđāđāđāļāļĒāđāļāđāļāļĪāļĐāļāļĩāļāļēāļĢāļĄāļĩāļŠāđāļ§āļ āļĢāđāļ§āļĄāđāļāļ·āđāļāļāļĢāļ§āļāļŠāļāļāļāļīāļāļāļīāļāļĨāļāļāļāļ āļēāļāļĒāļāļāļĢāđāļāļĩāđāļĄāļĩāļāđāļāļ āļēāļāļĨāļąāļāļĐāļāđāđāļŦāļĨāđāļāļāđāļāļāđāļāļĩāđāļĒāļ§āļāļĩāđāļāļđāđāļāļĄāļĢāļąāļāļĢāļđāđāļāļ§āļēāļĄāļĢāļđāđāļŠāļķāļ āļāļđāļāļāļąāļāļāđāļāļŠāļāļēāļāļāļĩāđāđāļĨāļ°āļāļ§āļēāļĄāļāļąāđāļāđāļāđāļāļīāļāļāļĪāļāļīāļāļĢāļĢāļĄāļāļĩāđāļĄāļĩāļāđāļāļāļļāļāļŦāļĄāļēāļĒāļāļĨāļēāļĒāļāļēāļāđāļāļāđāļ§āļāļāđāļāļāļāļąāļāļŠāļīāļāđāļ
āđāļāļīāļāļāļēāļāđāļāđāļĒāļĩāđāļĒāļĄāļāļĄāļāļĢāļīāļ āđāļāļĒāđāļāđāļāļĩāļĢāļĩāđāļĒāđāļĨāļ°āļāļĢāđāļāļĢāļāļąāļĻāļāđāđāļāļĒāđāļĢāļ·āđāļāļ āđāļāļĨāļĢāļąāļāļāļąāļāļāđāļ§āļĒāđāļāđāļāļ (I Told Sunset
About You) āđāļāđāļāļāļĢāļāļĩāļĻāļķāļāļĐāļēāđāļāđāļ§āļīāļāļĩāļ§āļīāļāļąāļĒāđāļāļīāļāļāļĢāļīāļĄāļēāļ āđāļāļĒāļĄāļĩāđāļāļāļŠāļāļāļāļēāļĄāđāļāđāļāđāļāļĢāļ·āđāļāļāļĄāļ·āļāđāļāļāļēāļĢāđāļāđāļāļāđāļāļĄāļđāļĨ āļāđāļēāļŦāļāļāđāļŦāđāļāļĨāļļāđāļĄāđāļĒāļēāļ§āļāļāļāļēāļ§āļāļĩāļāļāđāļēāļāļ§āļ 564 āļāļāļāļķāđāļāđāļāļĒāļāļđāļāļĩāļĢāļĩāļĒāđāđāļĢāļ·āđāļāļāļāļĩāđāļāļēāļāđāļāļĢāļāļąāļĻāļāđāđāļāđāļĒāļąāļāđāļĄāđāđāļāļĒāđāļāļ āļđāđāļāđāļ āļāļĢāļ°āđāļāļĻāđāļāļĒāđāļāđāļāļāļĨāļļāđāļĄāļāļąāļ§āļāļĒāđāļēāļāļāļđāđāļāļāļāđāļāļāļŠāļāļāļāļēāļĄāđāļāđāļ§āļīāļāļĩāļāļēāļĢāļŠāļļāđāļĄāđāļāļāđāļĄāđāļāļĢāļēāļāļāļ§āļēāļĄāļāđāļēāļāļ°āđāļāđāļāļŠāļĢāļļāļ
āļĨāļąāļāļĐāļāļ°āļŠāđāļ§āļāļāļļāļāļāļĨāļāļāļāļāļđāđāļāļāļāđāļāļāļŠāļāļāļāļēāļĄāđāļĨāļ°āļĢāļ°āļāļąāļāļāļēāļĢāļĄāļĩāļŠāđāļ§āļāļĢāđāļ§āļĄāđāļāļāļĩāļĢāļĩāļĒāđāļāļēāļĢāļĢāļąāļāļĢāļđāđāđāļāļĩāđāļĒāļ§āļāļąāļ
āļ āļēāļāļĨāļąāļāļĐāļāđāļāļāļāļāļļāļāļŦāļĄāļēāļĒāļāļĨāļēāļĒāļāļēāļāļāļ§āļēāļĄāļāļđāļāļāļąāļāļāļąāļāļŠāļāļēāļāļāļĩāđāđāļĨāļ°āļāļ§āļēāļĄāļāļąāđāļāđāļāđāļāļīāļāļāļĪāļāļīāļāļĢāļĢāļĄāļāļĩāđāļĄāļĩāļāđāļāļ āļđāđāļāđāļ
āđāļāļĒāđāļāđāļāļēāļĢāļ§āļīāđāļāļĢāļēāļ°āļŦāđāļŠāļāļīāļāļīāđāļāļīāļāļāļĢāļĢāļāļāļēāđāļĨāļ°āđāļāđāļāļēāļĢāļ§āļīāđāļāļĢāļēāļ°āļŦāđāļāļąāļāļāļąāļĒāđāļāļīāļāļĒāļ·āļāļĒāļąāļāđāļāļ·āđāļāļāļĢāļ°āđāļĄāļīāļāļāļ§āļēāļĄ
āļāđāļēāđāļāļ·āđāļāļāļ·āļāđāļĨāļ°āļāļ§āļēāļĄāļāļđāļāļāđāļāļāļāļāļāđāļāļāļāđāļēāļĨāļāļāļāļēāļāļāļĪāļĐāļāļĩāļāļĩāđāđāļŠāļāļāđāļĨāļ°āđāļāđāđāļāļāļāđāļēāļĨāļāļāļŠāļĄāļāļēāļĢāđāļāļĢāļāļŠāļĢāđāļēāļ
āđāļāļ·āđāļāļāļĢāļ°āđāļĄāļīāļāļāļ§āļēāļĄāļŠāļąāļĄāļāļąāļāļāđāļĢāļ°āļŦāļ§āđāļēāļāļāļēāļĢāļĄāļĩāļŠāđāļ§āļāļĢāđāļ§āļĄāļāļāļāļāļđāđāļāļĄāļāđāļāļ āļēāļāļĨāļąāļāļĐāļāđāļāļāļāļāļļāļāļŦāļĄāļēāļĒāļāļĨāļēāļĒāļāļēāļ
āļāļ§āļēāļĄāļĢāļđāđāļŠāļķāļāļāļđāļāļāļąāļāļāļąāļāļŠāļāļēāļāļāļĩāđāđāļĨāļ°āļāļ§āļēāļĄāļāļąāđāļāđāļāđāļāļīāļāļāļĪāļāļīāļāļĢāļĢāļĄ āļāļĨāļāļēāļĢāļĻāļķāļāļĐāļēāļāđāļāļāļĩāđāļ§āđāļēāļĢāļ°āļāļąāļāļāļēāļĢāļĄāļĩāļŠāđāļ§āļāļĢāđāļ§āļĄ
āđāļāļĨāļ°āļāļĢāđāļāļĢāļāļąāļĻāļāđāļĄāļĩāļāļĨāđāļāđāļāļīāļāļāļ§āļāļāđāļāļāļēāļĢāļĢāļąāļāļĢāļđāđāļ āļēāļāļĨāļąāļāļĐāļāđāļāļāļāļāļļāļāļŦāļĄāļēāļĒāļāļĨāļēāļĒāļāļēāļāđāļĨāļ°āļāļ§āļēāļĄāļāļđāļāļāļąāļāļāđāļ
āļāļļāļāļŦāļĄāļēāļĒāļāļĨāļēāļĒāļāļēāļāļāļĩāđāļāļđāļāļāđāļēāđāļŠāļāļāļāđāļēāļāļ āļēāļāļĒāļāļāļĢāđ āļāļāļāļāļēāļāļāļĩāđāļ āļēāļāļĨāļąāļāļĐāļāđāļāļāļāļāļļāļāļāļĨāļēāļĒāļāļēāļāļĒāļąāļāļŠāđāļāļāļĨāđāļāļīāļ
āļāļ§āļāļāđāļāļāļ§āļēāļĄāļĢāļđāđāļŠāļķāļāļāļđāļāļāļąāļāļāļąāļāļŠāļāļēāļāļāļĩāđāļāļĩāļāļāđāļ§āļĒāļĒāļīāđāļāđāļāļāļ§āđāļēāļāļąāđāļāļāļąāđāļāļ āļēāļāļĨāļąāļāļĐāļāđāļāļāļāļāļļāļāļāļĨāļēāļĒāļāļēāļāđāļĨāļ° āļāļ§āļēāļĄāļĢāļđāđāļŠāļķāļāļāļđāļāļāļąāļāļāļąāļāļŠāļāļēāļāļāļĩāđāļĒāļąāļāļĄāļĩāļāļīāļāļāļīāļāļĨāļāļĒāđāļēāļāļĄāļēāļāļāđāļāļāļ§āļēāļĄāļāļąāđāļāđāļāđāļāļīāļāļāļĪāļāļīāļāļĢāļĢāļĄāļāļāļāļāļđāđāļāļĄāđāļāļĢāļ°āļĒāļ°āļāđāļāļāļāļēāļĢāđāļāļīāļāļāļēāļāļāļĨāļāļēāļĢāļĻāļķāļāļĐāļēāļāļĩāđāđāļŠāļāļāļāļąāļĒāļŠāđāļēāļāļąāļāļāļēāļāļāļĪāļĐāļāļĩāđāļĨāļ°āļāļēāļĢāļāļąāļāļāļēāļĢāļāļĩāđāļŠāđāļēāļāļąāļāļŠāđāļēāļŦāļĢāļąāļāļāļēāļĢāļ§āļīāļāļąāļĒāļāļēāļĢāļāđāļāļāđāļāļĩāđāļĒāļ§āļ āļēāļāļĒāļāļāļĢāđāđāļĨāļ°āļāļāļāđāļāļĢāļāļēāļĢāļāļĨāļēāļāđāļāđāļŦāļĨāđāļāļāđāļāļāđāļāļĩāđāļĒāļ§āļāļĨāļēāļĒāļāļēāļ (DMOs
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