bluuebunny/crossref_metadata_2025 huggingface dataset:
Surface reconstruction inducedin situphosphorus doping in nickel oxides for an enhanced oxygen evolution reaction
Authors: Dai Weiji , Bai Xiaowan , Zhu Yin-an , Zhang Yue , Lu Tao , Pan Ye , Wang Jinlan
Published: January 2021

Surface reconstruction inducedin situincorporation of P into NiO crystals based on a Ni5P4pre-catalyst for an enhanced oxygen evolution reaction.
Designing ultrafine PdCo alloys in mesoporous silica nanospheres with peroxidase-like activity and catalase-like activity
Authors: Li Yuzhen , Zhou Hairihan , Li Tongtong , Jian Xiaoxia , Gao Zhida , Song Yan-Yan
Published: January 2021

The PdCo alloy homogenously distributed in MSNs as ultrafine and monodispersed particles exhibits excellent peroxidase- and catalase- like activity. The PdCo@MSNs show satisfied sensing performance in detecting glutathione from complex cell media.
Reducing the reverse leakage current of AlGaN/GaN heterostructures via low-fluence neutron irradiation
Authors: Wang Rong , Xu Jianxing , Zhang Shiyong , Zhang Ying , Zheng Penghui , Cheng Zhe , Zhang Lian , Chen Feng-Xiang , Tong Xiaodong , Zhang Yun , Tan Wei
Published: January 2021

We demonstrate that low-fluence neutron irradiation can be a promising way to reduce the reverse leakage current of AlGaN/GaN heterostructures grown by MOCVD on sapphire substrates while maintaining other electronic properties almost unchanged.
Improved microwave absorption performance of double helical C/Co@CNT nanocomposite with hierarchical structures
Authors: Dong Menglei , Peng Mengyi , Wei Wei , Xu Huajie , Liu Chuntai , Shen Changyu
Published: January 2021

Double helical C/Co@CNT nanocomposites with hierarchical structures for enhancing microwave absorption.
Fully-physically crosslinked silk fibroin/poly(hydroxyethyl acrylamide) hydrogel with high transparency and adhesive properties for wireless sensing and low-temperature strain sensing
Authors: Sun Xia , He Shaoshuai , Yao Mengmeng , Wu Xiaojun , Zhang Haitao , Yao Fanglian , Li Junjie
Published: January 2021

Fully-physically crosslinked hydrogels with strain sensitivity and anti-freezing properties for wireless sensing and low temperature sensing were prepared.
A perovskite single crystal with one-dimensional structure enables photodetection with negligible hysteresis
Authors: Zhang Yiwei , Liu Fengjing , Jiang Chao , Tang Fawei , Zhang Xinping
Published: January 2021

Photodetectors with negligible hysteresis are fabricated based on a hybrid perovskite single crystal with one-dimensional crystalline structure.
Revealing defective nanostructured surfaces and their impact on the intrinsic stability of hybrid perovskites
Authors: Lin Yuze , Liu Ye , Chen Shangshang , Wang Shen , Ni Zhenyi , Van Brackle Charles H. , Yang Shuang , Zhao Jingjing , Yu Zhenhua , Dai Xuezeng , Wang Qi , Deng Yehao , Huang Jinsong
Published: January 2021

Removing defective nanostructured surfaces restores single-crystal-like mechanical hardness, and then enhances the intrinsic stability of polycrystalline perovskites.
Detection of clear sky instants from high frequencies pyranometric measurements of global horizontal irradiance
Authors: El Alani Omaima , Ghennioui Hicham , Ghennioui Abdellatif , Dahr Fatima-ezzahra
Published: January 2021

Solar resource assessment by clear sky models is of great importance in the solar energy field: verifying the performance of photovoltaic systems during stable conditions, clouds effects evaluation, the determination of geographical areas where irradiation is more uncertain and the preparation of forecasts with sky cameras. But before using these models they must be validated against high performances soil measurements. Since there is no radiometric sensor that measures clear-sky radiation, then historical clear-sky time periods must be identified only from long-term allsky irradiation records. The contribution of this study is to exploit the ground measurements, analyze them and retrieve the information they contain concerning the clear sky instants. The study will be performed by comparing the clear sky instants identified by an algorithm proposed by Reno and Hansen with a physical clear sky model. This comparison is made using high frequency global horizontal irradiation (GHI) data from high performances meteorological station installed at Benguerir in Morocco.
Four-Propellers Underwater Drone Modelling
Authors: Moustanir Mohamed , Benkirane Karim , Sayouti Adil , Medromi Hicham
Published: January 2021

We present in this presentation the design of an underwater robot with four propellers, without rudders or diving bars, using the resources of drones [1] for its evolution in the aquatic environment, the modeling is done in a perfect environment without forces or hydrodynamic couples.
Irreversibility line and thermally activated flux flow in Micro-bridges of high-temperature superconductor
Authors: El Hassan Ahmed Abou , Taoufik Ahmed , Labrag Abdelaziz , Bghour Mustapha , El Hamidi Habiba , Ait Ahmed Youssef , Tirbiyine Ahmed , El Ouaddia Hassan
Published: January 2021

We have studied the electrical resistivity as a function of temperature in Micro-bridges of YBa2Cu3O7-δ deposited by laser ablation on the SrTiO3 substrate face, around superconducting transition region in different magnetic fields. The activation energy U0 was determined and discussed using the Arrhenius relation. The irreversibility line Birr and the upper critical field Bc2were obtained using 10% and 90% criteria of the normal-state resistivity value from ρ (T) curves. A phase diagram of the studied sample is constructed showing the Tg glass line and a very broad vortex-liquid phase regime.
Modeling and Optimization of Anaerobic Digestion: A Review
Authors: Walid Fatima , El Fkihi Sanaa , Benbrahim Houda , Tagemouati Hicham
Published: January 2021

Anaerobic digestion is recognized as being an advantageous waste management technique representing a source of clean and renewable energy. However, biogas production through such practice is complex and it relies on the interaction of several factors including changes in operating and monitoring parameters. Enormous researchers have focused and gave their full attention to mathematical modeling of anaerobic digestion to get good insights about process dynamics, aiming to optimize its efficiency. This paper gives an overview of the different approaches applied to tackle this challenge including mechanistic and data-driven models. This review has led us to conclude that neural networks combined with metaheuristic techniques has the potential to outperform mechanistic and classical machine learning models.
Monitoring of Physiological Signs and Their Impact on The Covid-19 Pandemic: Review
Authors: Bella Abdoullah , Latif Rachid , Saddik Amine , Guerrouj Fatima Zahra
Published: January 2021

Recently, monitoring of physiological signs such as heart rate and respiratory rate is very important, especially when we are talking about pandemics like Covid-19. In this paper we present a state of the art on the different techniques used for heart rate and respiratory rate extraction. These techniques presented will be based on image processing, were traditional sensor-based techniques creating a lot of problem at the contact level between patient and doctor. For this reason, we focus on non-contact techniques to avoid these problems. Generally, the literature review shows that non-contact monitoring techniques are based on RGB, thermal and multispectral cameras, the choice between these different cameras depends on the application that will be used. For example, thermal cameras are dedicated to the prediction of respiratory rate and temperature, while RGB and multispectral cameras are used for heart rate.
Segmentation of Brain Images by Optimizing Clustering of Convolution Based Features
Authors: Kumar Vikas
Published: January 2021

Brain tumour segmentation aims to separate the various types of tumour tissues like active cells, necrotic core, and edema from normal brain tissues of substantia alba (WM), grey matter (GM), and spinal fluid (CSF). Magnetic Resonance Imaging based brain tumour segmentation studies are attracting more and more attention in recent years thanks to non-invasive imaging and good soft tissue contrast of resonance Imaging (MRI) images. With the event of just about two decades, the ingenious approaches applying computer-aided techniques for segmenting brain tumour are getting more and more mature and coming closer to routine clinical applications. the aim of this paper is to supply a comprehensive overview for MRIbased brain tumour segmentation methods. Firstly, a quick introduction to brain tumours and imaging modalities of brain tumours is given in this proposed research, convolution based optimization. These stepwise step refine the segmentation and improve the classification parameter with the assistance of particle swarmoptimization.
Big Data Analytics Influence on Financial Performance and Market Value: Intellectual Capital as a Proxy
Authors: Nejjari Zakaria , Aamoum Hanane
Published: January 2021

Big data (BD) analytics is emerging as a valuable innovative research area for academics and professionals, showing the substantial requirement in an information-motivated economy focused on knowledge for answers to the market issues. It isn’t simple to effectively utilize the emerging technology, and it’s actually more difficult to evaluate the BD involvement in enhancing company performance. Furthermore, empirical research exploring the effects on financial performance and market value of the BD remain limited. In evaluating its impact on firm value, this research suggested employing the companies intellectual (IC) capital as a substitute for the BD efficiency deployment. This research utilized the VAIC technique to determine IC, through its principal constituents: capital employed efficiency, structural capital efficiency, human capital efficiency and subsequently applied the SEM method to examine the model fit. The data in this research comprise 29 Moroccan firms registered on the Casablanca Stock Exchange (CSE). These firms are part of 8 sectors: Food producers and processors, banks, Insurance, building and construction materials, participation and promotion real estate, distributors, mining, hardware, software and IT services. The chosen information covering a period of six years, from 2013 to 2019. The test findings indicated that capital employed efficiency and human capital efficiency affect positively and significantly the financial performance and market value.
Analysis of mobile applications reporting on nutritional recipes: a review of the scientific literature
Authors: Huamaní-Cahuana Jose , Cabanillas-Carbonell Michael
Published: January 2021

At present the planet faces a pandemic originated by the COVID-19, causing social isolation and decrease in the world economy; limiting more and more the resources of many people, which produces a deficient feeding, In this document a systematic review of literature was made considering scientific articles between the years 2010 and 2020 from sources like, IEEE Xplore, Concytec, Proquest, Scopus, WoS and Scielo, having as objective to know the best characteristics of mobile applications to inform about nutritional recipes. A total of 50 articles were studied and it was concluded that there are databases with nutritional information of foods that help greatly in improving the nutrition of people, also found various techniques for obtaining data from new technologies.
Green Computing case study: calls for proposing solutions for the Arabian Gulf Oil Company
Authors: Benamer Wisam H. , Elberkawi Ebitisam K. , Neihum Nebras A. , Anwiji Anwiji S. , Youns Moatz A.
Published: January 2021

Nowadays technology-based means are elements in every-day’s life, they ease running household and institution needs. In Libya the number of newly established institutions is on the rise in both the private and public sectors, with such growth there must be a concomitant increase in the use of electronic devices/gadgets. However, after a while these electronic devices will be out of date, and here a suitable strategy of Green Computing must be considered. This study aims to shed light on ways to save electricity consumption as a main factor for green computing, and to help publicize the understanding of green computing in institutions. Furthermore, awareness of green computing importance will be raised, through introducing the green computing concept to companies using a field study. The current study is a trial and was conducted in one of the biggest companies in Libya, namely the Arabian Gulf Oil Company (AGOCO). Consequently, we had come up with a number of recommendations that were classified into general and specific. General recommendations: These deal with the concept of green computing and what must be done to implement the steps for its correct application. Specific recommendations: These reflect the company’s plans to enhance power saving through green computing that are suitable for running their daily business.
Analysis Income and Household Expenses Based on Livelihood
Authors: Hariyanto Wahyudi , Suhendrata Tota , Jauhari Sodiq
Published: January 2021

The welfare of small farmer households has been essential; however, many of them who rely upon only on-farm find it difficult to cover their household expenses. The aims of the study were to identify various types of farmer household income sources and to analyze factors affecting farmer household income and expenditure. The study conducted in Boloh village, Toroh sub-district of Grobogan district from July to August 2018 analyzed data collected qualitatively, which referred to data reduction, data presentation, and withdrawal of conclusions using interactive analysis. The result showed that the average income of farmer households from on-farm was IDR. 18.987.000 per year, off-farm IDR. 14,825,000, and non-farm was IDR 25,925,000 per year; thus, the total of both was IDR 4,978,000 per month on average. Meanwhile, the average the total expenses was IDR 24,335,000 per year or IDR 2,028,000 per month consisting of food and transportation (61%), housing and appliances (6%), Household Facilities (13%), education and health (4%), agriculture (3%), and others (14%). Farmers depending only on agricultural activities without having non-farm jobs shall not be able to cover household expenses needed. Farmers should change their agricultural practices from traditional to modern. The government should have farmer provided supporting policy.
Analysis of factors that influence production and cost of corn in Banten province
Authors: Siagian Viktor , Resmayeti  , Yuniarti Silvia , Hidayah Ismatul
Published: January 2021

Banten Province on the 2019 year has to harvest area of corn was 66,356 ha with 331,865.38 tons production and the highest production in Pandeglang Regency. The purpose of this study was: 1) Knowing the pattern of corn farming in Banten Province, 2) Knowing the factors of production that affect corn production. 3) Knowing the cost factors that affect the cost of corn production. The analytical method used multiple linear analysis of the Cobb Douglas production and cost function. The results of the study were: 1) The planting pattern of corn was corn-corn - fallow. Dominant varieties were NK-212 (75.8%), Bima (12.1%) and BISI-18 (12.1%). Average productivity in RS 2018/2019 was 3.44 tons of dry shelled ha-1. The B/C ratio is 0.7, it’s mean financially not profitable.2) Factors that significantly affect corn production were: number of seeds, amount of manure, and number of tractors rent, and variety dummy. A cumulative elasticity value of 1.0 means corn farming was efficient. 3) Factors that significantly influence the cost of production were liquid herbicide prices and human labor costs. Increasing corn productivity still needs to be done with the use of proportional farming inputs.
Survive of the Indonesia farmers in during the Covid-19 Pademic: Findings of the South Sumatra
Authors: Bidarti Agustina
Published: January 2021

This research aims to perform an empirical analysis of rural farmer conditions in South Sumatera during the Covid-19 pandemic outbreak. To fulfill the research objectives, there are some things focused on economic and demographic features, levels and patterns of income and consumption, the magnitude of debt factors, and social conditions and the position of farmers in society. This research is a survey study with multiple regression analysis methods. The sample selection is carried out in a multilevel with a sample number of 300 farmers in South Sumatra. Based on this study, first, during the pandemic, farmers were in a difficult condition because of the low income from agricultural products that was not balanced with consumption expenditure. Farmers' income during the pandemic amounted to 104.54 USD, a decrease from the previous year amounting to 218.28 USD. Decreased by 52.16 percent before the pandemic. Second, they survive by making debt loans. Third, reduced income and large amounts of debt have caused farmers to be unable to meet their basic needs, where around 65.22 percent of total consumption is spent on non-durable goods or only to fulfill their basic needs.
Farmers’ Motivation In Organic Rice Farming In Gempol Village, Karanganom District, Klaten Regency
Authors: Indardi  , Budi Nugroho Restu
Published: January 2021

Organic rice innovation has several advantages, such as a higher selling price, better health aspect, and environmentally friendly, and more and more farmers are interested in innovating. There is a government policy to develop it. Farmers plant organic rice because they have motivation. This motivation study utilized Maslow’s needs theory, intending to describe the motivation of farmers in organic rice farming in Gempol Village, Karanganom, Klaten. The data were analyzed descriptively using scoring techniques, obtained through the census research method, namely interviewing 37 organic rice farmers in Gempol Village. The results revealed that the average score regarding the motivation of organic rice farmers in Gempol Village was 92.39 (67.39%) from a score range of 25 - 125, categorized as “high”. In more detail, the motivation needs of physiological, social, appreciation, and self-actualization were all in the high category, while the safety needs belonged to the moderate category. To meet the needs for a sense of security, farmers should invest some of their organic rice income in livestock activities, whether large or small livestock, or poultry.
Communication Participation in Community Empowerment for Energy Independent Tourism Villages in the Pandemic Era
Authors: Rosyidi Moch. Imron , Purwantini Anissa Hakim , Muliawanti Lintang , Purnomo Bagiyo Condro , Widyanto Andi
Published: January 2021

Energy autonomy is still a big problem nationally In Indonesia, with only 4% of energy use outside fossil energy in general. Indonesia has made a major policy in this regard, with Government Regulation No. 79 of 2004 concerning National Energy Policy until 2050 on October 17, 2014. Potential maximization efforts would be interesting with utilizing the potential of energy independence into a tourism village conducted by the DRPM PPDM UMMagelang Team. These efforts certainly require a maximum community participation. This study was conducted in Gedangan Village, Cepogo District, Boyolali Regency. The method used is descriptive qualitative approach to action research participation, where researchers are directly involved in community development. Informants are selected through a purposive criteria for the actors and empowerment targets. The results showed that up to July 2020 the program had run 70%. Community participation is important in achieving this.The pandemic era is also not an obstacle for the local community to keep up with the activity. Because according to Habermas consensus can not only occur in direct communication media but also digital communication media. To reach consensus not only talk about direct participation but participation through various media.
The Process of Adopting Organic Agriculture Technology by Rice Farmers in the Sri Rejeki Farmers Group, Godean, Sleman
Authors: Indardi  , Anggita Rahmawati Nurul , Yusi Rusimah Siti
Published: January 2021

The research objective was to describe the adoption process in the application of organic agricultural technology. The research was conducted in Brongkol, Sidomulyo Village, Godean, Sleman. This research uses descriptive analysis, qualitative paradigm. Data were collected by indepth interviews and observations on farmers who have received guidance on organic farming technology through field schools until they are saturated with information (20 respondents). Research results, at the awareness stage respondents are familiar with information on organic farming technology some were long before, sometime before, during implementation, and there were farmers who knew some time after the field school. The interested stage, respondents seek additional information through their friends. The evaluation stage is the stage when respondents begin to seriously assess. The process of the length of evaluation conducted by farmers is quite diverse. In the trial phase, respondents applied it to their land, with various sizes. The adoption stage, generally respondents accept to apply technology, there is a small proportion who do not continue the adoption. It is important to do intensive counselling.
Promoting organic pigmented rice: A study to develop sustainable agroindustry in Indonesia
Authors: Wijayanti Fadhila , Ismoyowati Dyah , Ainuri Makhmudun
Published: January 2021

Increased environmental awareness has made consumers switch to consuming organic food. One of the most popular preferences of organic foods is organic pigmented rice. Market information regarding consumers who are aware of the environment in pigmented rice oriented towards organic and sustainable products is still needed. For this reason, this study aims to determine consumer attitudes towards green products and how much influence consumer attitudes towards purchase intention of organic pigmented rice. The type of research used in this study is descriptive quantitative with survey methods. Research data were derived from Indonesian consumers and obtained valid responses from 309 participants. The analysis technique used is simple linear regression. The results showed that the variable attitude towards green products had a positive and significant effect on green purchase intentions. The attitude variable towards green products can explain the variance of green purchase intention of 44.3%, while 55.7% are influenced by other variables not examined in this study. The study concludes that the promotion program by relevant stakeholders must focus on the environmental and health benefits of organic pigmented rice that is produced sustainably.
Marketing Efficiency and Marketing Channel Choice assessment of Manggo Fruit
Authors: Ganda Sukmaya Syahrul , Jakiyah Ulpah
Published: January 2021

This study aims at evaluating the marketing effectiveness and added value of mangoes in Majalengka Regency using: (a) describe the marketing channels, (b) marketing function, and (c) to analyze the marketing efficiency. Based on research findings, there are five marketing channels in Majalengka Regency's mango marketing channels. Based on the analysis and research conducted, it was found that there are five marketing channels found in mango marketing in Majalengka Regency. The added value in mango marketing today is mostly done by traders and the processing industry, while the provision of added value by farmers is still few. The overall added value in mango marketing in Majalengka regency is linked to the development of the mango sponge processed industry, but the scale is still limited. Therefore, there needs to be increased effort and support for entrepreneurs engaged in the mango processed industry. Lastly, of the five marketing channels that are on mango products, two marketing channels are most efficient compared to other marketing channels.
Agritourism Development Model Based on Local Wisdom in Karangtengah Village Imogiri Bantul DIY
Authors: Sriyadi  , Istiyanti Eni
Published: January 2021

This study aims to explain the agritourism development model strategy based on local wisdom in Karangtengah Village. The research was conducted by interviewing farmers and related parties and the field observation. The results showed that the development of local-wisdom based agritourism required a proper planning and master plan, optimization of the potential owned, cooperation with various parties (private, government and community), education training on tourism to managers and communities, and overall socialization to the community based on community empowerment. It is recommended to optimize the existing potential in cooperation with various parties from the government, the private sector, and universities.
Efforts to Improve Rice Milling Capacity in Tidal Swamp Agroecosystem in Banyuasin Regency, South Sumatra
Authors: Hutapea Yanter , Thamrin Tumarlan , Raharjo Budi
Published: January 2021

Compared to when the rice planted once in a year, now the increase of rice cropping index (CI) does not have much impact on the increase of rice milling work capacity in tidal swamp agroecosystem. This study aims to identify the causes of rice milling work capacity decrease and provide suggestions to increase the working capacity of rice milling. The survey was conducted in 2019 in Muliasari Village, Tanjung Lago Sub District as an easily accessible location and Sumber Hidup Village in Muara Telang Sub District as a relatively difficult location to reach, both located in Banyuasin Regency, South Sumatera Province. Descriptive data analysis quantitatively and qualitatively was done as comparisons. The results of this study indicate that: There are insufficient time and labor to carry out grain drying due to the immediate replanting of paddy fields to increase CI. Reactivating rice milling gives an impact on the use of leftovers such as husks and bran so that the added value can be used in the village. Policy suggestions through this activity are 1) guaranteed more favorable selling prices for rice, 2) rice processing diversification, and 3) reactivating post-sale activities through the use of food barns.
Input Saving Technology Package of True Seed of Shallot (TSS) Production in Indonesia
Authors: Dianawati Meksy , Haryati Yati , Yulyatin Atin , Rosliani Rini , Liferdi
Published: January 2021

True seed of shallot (TSS) can be an alternative source of shallot seeds. But the use of TSS in Indonesia is still limited because not many people produce TSS because of high input production. This research aimed to evaluate the technical and economic feasibility of input saving TSS production technology packages. The research was carried out in Ciwidey district, Bandung Regency, West Java, Indonesia from June to October 2016. The research consisted of two factors arranged in a split plot with a randomized block design and eight replications. The main plot was technology packages, namely farmer, recommendation and input saving. The subplot was harvest time, which were 80, 90, and 100 weeks after planting. The observed variables were yield component and yield, soil status, climate data, and farming data. The technical data were analyzed by ANOVA test and continued using the Duncan test at a 95% confidence level. Farming data was analyzed by RC ratio. The results showed that input saving package did not meet seed standards with an RC ratio of 1.07. Savings input on TSS production in Indonesia were only possible by choosing the right location and planting time and must be followed by climate prediction.
Post Harvest Corn Handling for Improving Quality and Competitiveness
Authors: Layuk Payung , Lintang Meivie , Yusuf
Published: January 2021

The awareness and knowledge of postharvest losses at the farm level is still very low, so it is necessary to conduct research to determine the application of postharvest technology at the farm level. The research was conducted from January to December 2017 in Minahasa, North Minahasa and South Minahasa districts. The results of the study showed that each stage of postharvest treatment varied from 5% of conventional and 1.92% of introduced technology. The use of postharvest BB shelling tools with an operating time of 9 minutes/100 kg with an operational cost of 187,800 IDR/ha, results in a loss of yield of about 0.8%, peeled corn sheller with an operating time of 10.25 minutes/100 kg and an operating cost of 213,400 IDR/ha lost yield of 0.95%, compared to traditional shelling tools with an operating time of 130 minutes/100 kg and operational costs of 1,354,100 IDR/ha, yield loss of 0.2% lower but high labor costs. The use of a dryer with a capacity of 3 - 4 tons with a drying time of 12-17 hours can save the labor cost of 2 working days (200,000 IDR) when compared to a sun dryer, the yield loss is 0.1-0.2%. Dry shelled maize, rice, and corn bran stored for 3 months have not experienced a significant change in moisture content, with the control treatment, the use of zeolite, activated charcoal, quicklime, turmeric powder and fragrant lemongrass powder. The use of activated charcoal and zeolites can inhibit changes in moisture content and the growth of Sitophilus zeamais.
Implementation of Rice and Maize Cultivation Technology Based on Agronomic Effectiveness
Authors: Yustisia  , Riyanto Damasus , Thamrin Tumarlan , Amirrullah Johanes
Published: January 2021

The existing land characteristics and inappropriate management during intensive agricultural practice on upland, swampland, and paddy field are the factors that causing land productivity to be low and decreasing. Alternative efforts to increase the land, rice, and maize productivities could be carried out through the implementation of Site- Specific Nutrient Management technology based on the RAE parameter. This paper presents thoughts on the opportunities for refocusing RAE- based research on agricultural cultivation technology, and research results that have been done.The research of rice and maize with RAE in the upland and paddy field has resulted in a location-specific cultivation technology package. The technologies that have been produced are single NPK inorganic fertilizer package, the combination of single NPK- compound NPK inorganic fertilizers, the combination of single NPK inorganic fertilizer-organic fertilizer, and combination of single NPK inorganic fertilizer-biofertilizer. By using RAE value, these researches have shown a more effective technology package in comparison with standard technology. The technology devices for determining standard fertilization needed to support the research with RAE parameter as the basis are available. The said devices are Upland, Swampland, and Paddy Soil Test Kit. Refocusing research of location-specific fertilization that explicitly using RAE parameter is relevant to promote sustainable agriculture.
Rural Transformation in Various Ecosystem in Indonesia
Authors: Susilowati Sri Hery , Ashari  , Sudaryanto Tahlim
Published: January 2021

The agricultural and rural sectors in Indonesia have experienced a dynamic transformation. This process of transformation reflected the changes in employment and income structure. This paper analyzes the changes in employment, income structures, and dietary patterns in various ecosystems, namely wetland paddy, dry land secondary, vegetables, and plantation. We use micro panel data collected from 1,155 rural households in 8 provinces, and 33 villages in Java and off-Java in 2007-2012 and 2016 -2018. The results showed that the share of agriculture employment decreased from 89.1 % in 2007 to 56.7 % in 2016 in the wetland paddy ecosystem, and the reverse was true for non-agricultural employment. Household income from agriculture was still dominant but showed a decreasing trend. The share of agriculture income declined; the most significant decline is in the wetland paddy ecosystem. Furthermore, a nonfarm income also tends to increase. Share of cereal consumption expenditure tends to decrease while processed foods and instant drinks tend to grow. For accelerating agricultural and rural transformation, government policy should focus on investment in rural infrastructure, promote labor and land markets, and build capacity building based on the need for a different ecosystem of the rural population.
The study of bioenergy with molasses raw materials: analysis of potential and problems in its development in East Java, Indonesia
Authors: Agustian Adang , Ariningsih Ening , Gunawan Endro , Indraningsih Kurnia Suci
Published: January 2021

The Indonesian government is gradually reducing its dependence on petroleum fuels by mixing it with biofuels. One of the biofuels used is bioethanol made from molasses. This study aims to analyze the potential for sugarcane development at the farm level, identify bioenergy problems, and provide bioenergy development recommendations based on molasses. The research was conducted in East Java Province in 2016, with updated data in 2019. The analytical methods used were quantitative and qualitative. The results of the research are as follows. In 2019, the potential of molasses produced reached 260.06 thousand tons in East Java Province. However, there are some technical and socio-economic problems in developing biofuels from molasses, including the low yield of sugar, limited processing of molasses into bioethanol, lack of bioethanol marketing guarantee, and lack of synergy in bioethanol policy development. Some policy recommendations proposed to support the sustainability of bioethanol production in the future are policy supports for increasing sugarcane farming, capital support for bioethanol producers, guarantee in the bioethanol marketing, and synergies in developing bioenergy policies.
Does Ecotourism Contribute to Sustainable Development? A case at In Banyuwangi
Authors: Istiqomah Ni’matul , Yunikawati Nur Anita , Yunika Puspasari Emma , A Jabbar Marzanah
Published: January 2021

Sustainable development is a very interesting issue to study, with the emergence of sustainable development in 2015 this has become even sturdier. Environmental problems are one of the 17 goals of sustainable development, which is a consideration aspect for country or region in improving social and economic sectors. Ecotourism emerged in an effort to solve various overlapping problems in realizing development. The purpose of this study is to determine the contribution made by ecotourism in realizing sustainable development on Pulau Merah Beach, Banyuwangi. Pulau Merah Beach has applied the concept of ecotourism to support sustainable development goals. This can be seen from the results of interviews, observations and documentation that we have done. Result of collaboration between site managers and business owners makes Pulau Merah Beach visitor’s rise, which indirectly increases the amount of revenue for tourism site which was managed by the local government and following with direct impact felt by business owners at the Pulau Merah Beach.
Real-time Machine Health Monitoring System using Machine Learning with IoT Technology
Authors: Wong Tzen Ket , Mun Hou Kit , Phang Swee King , Lum Kai Lok , Tan Wei Qiang
Published: January 2021

Machine health monitoring is the main focal point for now as many industries are evolving to industry 4.0. Industry 4.0 is the revolution in industrial that involve the Internet of Things (IoT) and artificial intelligence toward automation and data sharing for production efficiency improvement. The existing established methods for machine health monitoring were not in real-time and there was no real-time correction of data from the load and processing of data on the computer. In tracking machine health efficiency this approach wasn’t very successful. Real-time machine health monitoring can improve overall equipment effectiveness (OEE), reduce electricity consumption, minimize unplanned downtime, and extend machine lifetime. In this research paper, we propose to design a real-time machine health monitoring system using machine learning with IoT technology that can analyze the supply balancing condition on a 3-phase system. This system is built with compact physical hardware and can capture the electrical data from the load then send it to the server. The server will progress data and train the data using machine learning. The system was installed on a blender machine in a factory. In this research, a system which is able to monitor the machine operation and classify the operation stages of the machine was developed. Besides that, the system also capable to monitor the load balancing condition of the machine.
Design of Augmented Cooling System for Urban Solar PV System
Authors: Jia Joon Chong , Chew Wai Jin Kelvin
Published: January 2021

Solar photovoltaic (PV) panels have been widely used to convert the renewable energy from the sun to electrical energy to power electrical loads but suffers from relatively low efficiency between 15% to 22%. Typically, the panels have an average lifespan of 25 to 30 years but could degrade quicker due to the panel overheating. Beyond the optimum working temperature of 25°C, a drop of efficiency by 0.4 to 0.5% for every 1°C had been reported. For solar PV applications in urban regions, passive cooling is beneficial due to limited amount of space and lower energy consumption compared to active cooling. A solar PV system with augmented cooling was conducted at a balcony of a condominium from 10am until 2pm. The solar PV system consisted of an Arduino controller, solar panel module, temperature sensor and LCD monitor. Reusable cold and hot gel packs were attached to the bottom of the solar PV. Both setups of solar PV panel with and without the cooling system were placed at the balcony simultaneously for measurement of temperature, output voltage and current. From this research, the outcome of implementing a cooling system to the solar PV increases the efficiency of the energy conversion.
An Experimental and Mathematical investigation of optimal tilt angle and effects of reflectors on PV energy production
Authors: Krishna Yathin , Karinka Shashikantha , Fauzan Mohd Faizal , Manihalla Prashanth Pai
Published: January 2021

The performance of the solar photovoltaic panels relies on its direction and tilt angle with respect to the horizontal to obtain better conversion efficiency. The tilt angle of the PV panel needs to be in proper location and position to obtain maximum power output from photovoltaics. The optimum tilt angle is generally calculated based on global, diffused, and direct radiation on the horizontal surface. This study focuses on the concept of the optimal tilt angle that improves the performance of the PV panel. The paper discusses the MATLAB mathematical modelling and experimental validation conducted at Nitte, India to determine the optimal tilt angle of PV panels of the region for maximum solar radiation. The investigation also includes the effect of three different types of reflectors on the PV panel for the obtained optimal tilt angle. The experimental results show that to get the optimum power output, the tilt angle needs to be changed every month. Hence monthly optimal tilt must be chosen for optimum power output. The results showed a PV panel with a focused mirror reflector produced higher power output compared to aluminum and stainless-steel reflectors.
A Novel Local Search-Based Approximation Algorithm to Optimize Virtual Machine Placement With Resource Constraints
Authors: Maheshbhai Shah Darshan , Murthi M. Vinayaka , Kumar Anand
Published: January 2021

Many problems in cloud computing are not solvable in polynomial time and only option left is to choose approximate solution instead of optimum. Virtual Machine placement is one of such problem with resource constraints in which overall objective is to optimize multiple resources of hosts during placement process. In this paper we have addressed this problem with large size NP-Hard instances and proposed novel local search-based approximation algorithm. This problem is not yet studied in the research community with NP hard instances. A new proposed algorithm is empirically evaluated with state-of-the-art techniques. and our algorithm has improved placement result by 18% in CPU utilization, 21% in resource contention and 26% in overall resource utilization for benchmark instances collected from azure private cloud data center.
Faire ducommundans les sciences
Authors: Israel-Jost Vincent , Coutellec Léo
Published: January 2021

La crise de la COVID-19 s’est ouverte sur un déficit de moyens thérapeutiques permettant de lutter efficacement contre cette maladie pour les cas les plus graves et sur de nombreuses initiatives visant à mettre en évidence un traitement efficace. Si différentes options ont été explorées, parmi lesquelles la transfusion de plasma de patients guéris, la lutte contre les mécanismes immunitaires déclenchant une réponse trop forte (les orages cytokiniques) ou, à moyen terme, la vaccination, ce sont dans un premier temps surtout les médicaments antiviraux qui ont nourri les espoirs. Après l’identification d’un certain nombre de principes actifs montrant des effetsin vitro, il s’agissait d’obtenir rapidement des réponses quant à leurs effets bénéfiquesin vivoet aux risques induits. Aussi, s’est-on senti en droit d’attendre que la science nous apporte les connaissances nécessaires sur ces médicaments, qu’elle nous parle, une fois sollicitée, de manière claire et d’une seule voix ; et cela, dans une situation d’urgence où la synchronisation des rythmes de la recherche et du soin n’a rien d’une évidence.
CRISPR : le Nobel, enfin…
Authors: Jordan Bertrand
Published: January 2021

Après Marie Curie, en 1903 et 1911, Irène Joliot-Curie en 1935, Françoise Barré-Sinoussi en 2008, Esther Duflo (franco-américaine) en 2019, Emmanuelle Charpentier est la cinquième française à décrocher un Prix Nobel (le Nobel de chimie 2020) qu’elle partage avec l’américaine Jennifer Anne Doudna. C’est la première fois qu’un prix Nobel scientifique est décerné conjointement à deux femmes.

Emmanuelle Charpentier (née le 11 décembre 1968 à Juvisy-sur-Orge, France), obtient un doctorat à l’Institut Pasteur, après un master à l’université Pierre et Marie Curie (UPMC, maintenant Sorbonne Université, Paris). Microbiologiste, généticienne et biochimiste, elle poursuit un cursus international au sein d’institutions américaines avant un retour en Europe (Suède et Allemagne). Elle est aujourd’hui professeure à l’Institut Max Planck de Science des Pathogènes à Berlin qu’elle a créé et qu’elle dirige.

Jennifer Anne Doudna (née le 19 février 1964 à Washington) est une professeure américaine de biochimie et de biologie moléculaire à l’université de Californie à Berkeley. Elle est titulaire d’une licence en chimie obtenue au Pomona College en 1985. Sa thèse de doctorat en biochimie, centrée sur l’étude des ribozymes, a été menée à l’université Harvard. Par la suite, elle a effectué un postdoctorat à l’université du Colorado à Boulder.
Les lipides ne doivent plus être diabolisés… ni chez l’adulte, ni chez l’enfant
Authors: Legrand Philippe , Catheline Daniel , Rioux Vincent
Published: January 2021

Après une période très dogmatique, mais en partie explicable, de diabolisation des lipides, les données acquises en physiologie et en épidémiologie constituent désormais la base pour une réhabilitation de l’importance de la proportion de lipides dans l’apport énergétique, chez l’adulte et chez l’enfant. Dès 2010, lesapports nutritionnels conseillés(ANC) ont initié cette nécessaire revalorisation, confirmée depuis par plusieurs études. Même si cela apparaît un peu paradoxal dans le contexte actuel de surpoids et d’obésité de la population, labonnedose de lipides dans l’alimentation est importante à respecter, en particulier chez le jeune enfant.
Homéostasie de la réponse IgA et microbiote
Authors: Pascal Virginie , Hiblot Margaux , Wehbi Batoul , Aldigier Jean-Claude , Cogné Michel
Published: January 2021

L’immunité muqueuse s’établit en réponse à un ensemble de microorganismes qui sont surtout commensaux mais aussi, parfois, pathogènes. À cette dualité, les immunoglobulines de classe A (IgA) opposent une balance fonctionnelle allant de la tolérance à la protection, voire à une hyper-inflammation. Des travaux récents ont révélé la liaison d’IgA polyréactives naturelles ou, à l’inverse, d’IgA spécifiquement affines et protectrices, au microbiote commensal, mais aussi à des super-antigènes ou encore à des vaccins muqueux. Différents types de réponse humorale s’associent ainsi pour composer, ensemble, l’homéostasie de l’immunité muqueuse. Leur connaissance devrait ainsi influencer les stratégies de vaccination muqueuse et également les immunothérapies ciblant les maladies inflammatoires chroniques de l’intestin.
Modélisation tridimensionnelle in vitro des systèmes nerveux et immunitaire de la peau
Authors: Muller Quentin , Berthod François , Flacher Vincent
Published: January 2021

Le système immunitaire et le système nerveux sensoriel sont responsables de la perception du danger, sous des formes distinctes mais complémentaires. Ces dernières années, les interactions neuro-immunes se sont imposées comme un axe de recherche important en dermatologie pour comprendre la cicatrisation, la dermatite atopique ou le psoriasis. Nous présentons ici une sélection de modèles tridimensionnels in vitro reproduisant la structure de la peau et intégrant une fonction immunitaire ou sensorielle. Les évolutions futures de ces modèles permettront d’obtenir une vision aussi complète que possible des influences réciproques entre système immunitaire et système nerveux sensoriel.
Endoscopic ultrasound-guided biliary drainage of malignant stenosis, not treatable with endoscopic retrograde cholangiopancreatography: a single-center, prospective observational study
Authors: Tarantino Ilaria , Peralta Marco , Ligresti Dario , Amata Michele , Barresi Luca , Cipolletta Fabio , Antonio Granata , Traina Mario
Published: January 2021

Background and study aims The therapeutic role of endoscopic ultrasound (EUS) evolved in recent decade,s opening a new chapter in the field of endoscopic biliary drainage (BD). EUS-BD has emerged as a new mini-invasive technique for neoplastic jaundice not amenable to endoscopic retrograde cholangiopancreatography (ERCP). The primary study aims were to assess the clinical efficacy of EUS-BD using an electrocautery-enhanced lumen apposing metal stent (ECE-LAMS) in patients with malignant biliary obstruction with failed\unfeasible ERCP and the adverse event (AE) rate. The secondary aims were to evaluate the technical success and incidence of jaundice recurrence.

Patients and methods Data from All patients referred to our tertiary-care Institute with obstructive jaundice due to unresectable malignant distal biliary stricture and unfeasible\failed ERCP, were prospectively recorded from January 2015 to February 2018. The procedures were performed by a single-step ECE-LAMS (AXIOS-EC, Boston Scientific) placement, from the upper gut lumen to the biliary tree, for definitive biliary decompression.

Results Twenty-one patients were consecutively enrolled. Mean pre-procedure common bile duct diameter was 16 mm and the bilirubin level was 13.9 mg/dL (range 3.8–29.5). LAMS was positioned from the duodenal bulb (n = 19) to gastric antrum (n = 2). We registered a 100 % of technical and clinical success. No AEs occurred. We observed a single case of delayed AE consisting of a buried LAMS, which was successfully resolved endoscopically.

Conclusions Despite the limits of being non-comparative, our study shows outcomes in a homogeneous population in terms of indications and technique. EUS-BD with dedicated ECE-LAMS is associated with extremely good clinical efficacy and safety and can be considered as an alternative in cases of failed/unfeasible ERCP.