bluuebunny/crossref_metadata_2025 huggingface dataset:
Manufacturing of 42SiCr-Pipes for Quenching and Partitioning by Longitudinal HFI-Welding
Authors: Kroll Martin , Birnbaum Peter , Zeisig Josephine , Kraeusel Verena , Wagner Martin Franz-Xaver
Published: June 2019

In the pipe manufacturing and pipe processing industry, the demand for cost-effective pipes with high strength and good ductility is increasing. In the present study, the inductive longitudinal welding process was combined with a Quenching and Partitioning (Q&P) treatment to manufacture pipes with enhanced mechanical properties. The aim of the Q&P process is to establish a martensitic structure with increased retained austenite content. This allows for the beneficial use of both phases: the strength of martensite as well as the ductility of retained austenite. A 42SiCr steel, developed for Q&P processes, was joined at the longitudinal seam by a high-frequency induction (HFI) welding process and was subsequently heat-treated. The applied heat treatments included normalizing, austenitizing, quenching, and two Q&P strategies (Q&P-A/Q&P-B) with distinct quenching (Tq = 200/150 °C) and partitioning temperatures (Tp = 300/250 °C). Investigations of the microstructures revealed that Q&P tubes exhibit increased amounts of retained austenite in the martensitic matrix. Differences between the weld junction and the base material occurred, especially regarding the morphology of the martensite; the martensite found in the weld junction is finer and corresponds more to the lath-type morphology, compared to the base material in the circumference. In all zones of the welded tube circumference, retained austenite has been found in similar distributions. The mechanical testing of the individual tubes demonstrated that the Q&P treatments offer increased strength compared to all other states and significantly improved ductility compared to the quenched condition. Therefore, the approach of Q&P treatment of HFI-welded tubes represents a route for the mass production of high-strength tubular products with improved ductility.
Typomorphic Characteristics of Pyrites from the Shuangwang Gold Deposit, Shaanxi, China: Index to Deep Ore Exploration
Authors: Wang Jianping , Liu Zhenjiang , Wang Kexin , Zeng Xiangtao , Liu Jiajun , Zhang Fangfang
Published: June 2019

The large Shuangwang gold deposit (>80 t gold) is located in the Western Qinling Orogen (WQO) of central China. It is an orogenic-type gold deposit hosted in an NW-extending breccia belt in the Devonian Xinghongpu Formation. Gold mineralization of the Shuangwang deposit is featured by hydrothermal breccia ores with strata fragments cemented by hydrothermal minerals dominated by ankerite, quartz, and pyrite with minor amounts of calcite and albite. Pyrite is the major gold-hosting sulfide and the most abundant ore mineral. Crystal habits, thermoelectricity, and trace-element composition of pyrites from the main ore-forming stage of the Shuangwang gold deposit were studied by microbinocular, BHTE-06 thermoelectric coefficient measuring instrument, and high-resolution inductively coupled plasma mass spectrometry (HR-ICP-MS). Spatial distribution of the above data for pyrites was delineated by contour maps of morphology index, P-type frequency, and primary halo elements (e.g., supraore halo elements Ba and Sb; near-ore halo elements Pb, Zn, and Cu; and subore halo elements Co, Mo, and Bi). Based on the above results, four target areas (areas between prospecting lines 0 and 1, between lines 14 and 18 below orebody KT9; areas between prospecting lines 30 and 34, between lines 44 and 46 below orebody KT8) were put forward for deep gold exploration in the future. These targets are consistent with the depth extrapolation of proven gold orebodies, indicating the practicality of typomorphic characterization of pyrites as vector to deep/concealed gold orebodies. The effectiveness of the pyrite typomorphic parameter for deep gold prediction seems to be chemical composition, crystal habits, and then thermoelectricity.
Elucidating the Effects of Hydrothermal Alteration on Seismic Reflectivity in the Footwall of the Lalor Volcanogenic Massive Sulfide Deposit, Snow Lake, Manitoba, Canada
Authors: Schetselaar Ernst , Bellefleur Gilles , Hunt Patricia
Published: June 2019

The integrated analysis of seismic rock properties, lithogeochemical data, and mineral compositional data, estimated via scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), provides insight into the effects of hydrothermal alteration on seismic reflectivity in the footwall of the Lalor volcanogenic massive sulfide (VMS) deposit, Manitoba, Canada. The effects of hydrothermal alteration on variations in acoustic impedance are secondary in magnitude and superimposed on the dominant acoustic impedance contrast between felsic and mafic volcanic protoliths. This secondary effect is due to an increase in P-wave velocity with increasing intensity of hydrothermal alteration, as measured by the Ishikawa and Carbonate-Chlorite-Pyrite alteration indices. Mixture modeling of the seismic rock properties and mineral percentages suggests that the increase in seismic velocity is due to an increase in abundance of cordierite, which is one of the diagnostic aluminum silicates for hydrothermally-altered volcanic rocks metamorphosed in the upper almandine amphibolite facies. The synthetic seismic data of a simple VMS model consisting of mafic-felsic host rock contacts, a sulfide ore lens, and a discordant hydrothermal conduit, consisting of the amphibolite-facies mineral assemblage (600 °C, 6 kbar) encountered at Lalor, show enhanced seismic reflections at conduit-host rock contacts, in comparison to its greenschist facies equivalent (350 °C, 2.5 kbar). This zone of enhanced seismic reflectivity in the footwall of the massive sulfide ore zone is also recognized on the Lalor seismic data suggesting that high-grade terrains hosting VMS deposits possess enhanced potential for the seismic detection of their footwall hydrothermal alteration zones.
Anomeric Spironucleosides of β-d-Glucopyranosyl Uracil as Potential Inhibitors of Glycogen Phosphorylase
Authors: Stathi Aggeliki , Mamais Michael , Chrysina Evangelia D. , Gimisis Thanasis
Published: June 2019

In the case of type 2 diabetes, inhibitors of glycogen phosphorylase (GP) may prevent unwanted glycogenolysis under high glucose conditions and thus aim at the reduction of excessive glucose production by the liver. Anomeric spironucleosides, such as hydantocidin, present a rich synthetic chemistry and important biological function (e.g., inhibition of GP). For this study, the Suárez radical methodology was successfully applied to synthesize the first example of a 1,6-dioxa-4-azaspiro[4.5]decane system, not previously constructed via a radical pathway, starting from 6-hydroxymethyl-β-d-glucopyranosyluracil. It was shown that, in the rigid pyranosyl conformation, the required [1,5]-radical translocation was a minor process. The stereochemistry of the spirocycles obtained was unequivocally determined based on the chemical shifts of key sugar protons in the 1H-NMR spectra. The two spirocycles were found to be modest inhibitors of RMGPb.
Structural, Physical, and Antifungal Characterization of Starch Edible Films Added with Nanocomposites and Mexican Oregano (Lippia berlandieri Schauer) Essential Oil
Authors: Aguilar-Sánchez Rocio , Munguía-Pérez Ricardo , Reyes-Jurado Fatima , Navarro-Cruz Addí Rhode , Cid-Pérez Teresa Soledad , Hernández-Carranza Paola , Beristain-Bauza Silvia del Carmen , Ochoa-Velasco Carlos Enrique , Avila-Sosa Raúl
Published: June 2019

The aim of this study was to evaluate the structural, physical, and antifungal characteristics of starch edible films added with nanocomposites and Mexican oregano (Lippia berlandieri Schauer) essential oil (EO). Starch edible films were formulated with Mexican oregano EO (0%, 1%, or 2% v/v) and bentonite or halloysite (2%). Physical properties such as L* (luminosity), hue, film thickness, and O2 and CO2 permeability were determined. Structural analysis was carried out via atomic force microscopy (AFM). Antifungal activity against Aspergillus niger, Fusarium spp., and Rhizopus spp. was evaluated. The addition of EO and nanocomposites reduced luminosity, providing color to the edible films. Film thickness increased through the addition of EO concentration. O2 and CO2 permeability was increased by bentonite/EO films, and for halloysite films, CO2 permeability decreased as EO concentration increased. The addition of EO with both nanocomposites shows an evident morphological change in film structure, decreasing pore density and increasing pore size. In general, Mexican oregano EO added to edible starch films has an adequate fungicidal effect. The most sensitive microorganism tested was A. niger. Edible films added with Mexican oregano EO and nanocomposites show better physical and antifungal properties due to an adequate structural change in the biopolymer matrix.
Optimized Nuclear Pellet Method for Extracting Next-Generation Sequencing Quality Genomic DNA from Fresh Leaf Tissue
Authors: Rana Md Masud , Aycan Murat , Takamatsu Takeshi , Kaneko Kentaro , Mitsui Toshiaki , Itoh Kimiko
Published: June 2019

Next-generation sequencing (NGS) is a revolutionary advancement allowing large-scale discovery of functional molecular markers that has many applications, including plant breeding. High-quality genomic DNA (gDNA) is a prerequisite for successful NGS library preparation and sequencing; however, few reliable protocols to obtain such plant gDNA exist. A previously reported nuclear pellet (NP) method enables extraction of high-yielding gDNA from fresh leaf tissue of maize (Zea mays L.), but the quality does not meet the stringent requirements of NGS. In this study, we optimized the NP method for whole-genome sequencing of rice (Oryza sativa L.) through the integration of simple purification steps. The optimized NP method relied on initial nucleus enrichment, cell lysis, extraction, and subsequent gDNA purification buffers. The purification steps used proteinase K, RNase A, phenol/chloroform/isoamyl alcohol (25:24:1), and chloroform/isoamyl alcohol (24:1) treatments for protein digestion and RNA, protein, and phenol removal, respectively. Our data suggest that this optimized NP method allowed extraction of consistently high-yielding and high-quality undegraded gDNA without contamination by protein and RNA. Moreover, the extracted gDNA fulfilled the quality metrics of NGS library preparation for the Illumina HiSeq X Ten platform by the TruSeq DNA PCR-Free Library Prep Kit (Illumina). We provide a reliable step-by-step guide to the extraction of high-quality gDNA from fresh leaf tissues of rice for molecular biologists with limited resources.
In Vitro Interactions of Dietary Fibre Enriched Food Ingredients with Primary and Secondary Bile Acids
Authors: Naumann Susanne , Schweiggert-Weisz Ute , Eglmeier Julia , Haller Dirk , Eisner Peter
Published: June 2019

Dietary fibres are reported to interact with bile acids, preventing their reabsorption and promoting their excretion into the colon. We used a method based on in vitro digestion, dialysis, and kinetic analysis to investigate how dietary fibre enriched food ingredients affect the release of primary and secondary bile acids as related to viscosity and adsorption. As the main bile acids abundant in humans interactions with glyco- and tauroconjugated cholic acid, chenodesoxycholic acid and desoxycholic acid were analysed. Viscous interactions were detected for apple, barley, citrus, lupin, pea, and potato derived ingredients, which slowed the bile acid release rate by up to 80%. Adsorptive interactions of up to 4.7 μmol/100 mg DM were significant in barley, oat, lupin, and maize preparations. As adsorption directly correlated to the hydrophobicity of the bile acids the hypothesis of a hydrophobic linkage between bile acids and dietary fibre is supported. Delayed diffusion in viscous fibre matrices was further associated with the micellar properties of the bile acids. As our results indicate changes in the bile acid pool size and composition due to interactions with dietary fibre rich ingredients, the presented method and results could add to recent fields of bile acid research.
Antimicrobial Resistance, Virulence Factors, and Pathotypes of Escherichia coli Isolated from Drinking Water Sources in Jordan
Authors: Swedan Samer , Abu Alrub Heba
Published: June 2019

The study investigated the prevalence of potentially pathogenic and drug resistant Escherichia coli among drinking water sources in Jordan. A total of 109 confirmed E. coli isolates were analyzed. Antimicrobial susceptibility testing was done using the Kirby Bauer disk diffusion method. Phenotypic identification of extended spectrum beta-lactamase (ESBL) and carbapenemase production was done using the double disk synergy test and the modified Hodge test, respectively. Isolates’ plasmid profiles were determined by gel electrophoresis. PCR was used for detection of virulence and resistance genes. Overall, 22.0% of the isolates were potentially intestinal pathogenic E. coli (IPEC); namely enteroaggregative E. coli (16.5%), enteropathogenic E. coli (2.8%), enteroinvasive E. coli (1.8%), and enterohemorrhagic E. coli (0.9%). A third of the isolates were multi-drug resistant. The highest rates of antimicrobials resistance were observed against ampicillin (93.6%) and sulfamethoxazole/trimethoprim (41.3%). All isolates were susceptible to imipenem, meropenem, doripenem and tigecycline. The prevalence of ESBL and carbapenemase producers was 54.1% and 2.8%, respectively. BlaVIM was the most prevalent resistance gene (68.8%), followed by blaCTX (50.5%), blaTEM (45.9%), blaNDM (11%), blaKPC (4.6%), and blaSHV (0.9%). Fifty-eight (53.2%) isolates contained one or more plasmid ranging from 1.0 to 8.0 kbp. Overall, high prevalence of potentially pathogenic and resistant isolates was observed.
An Enhanced Mapping Function with Ionospheric Varying Height
Authors: Xiang Yan , Gao Yang
Published: June 2019

Mapping function (MF) converts the line-of-sight slant total electron content (STEC) into the vertical total electron content (VTEC), and vice versa. In an MF, an essential parameter is the ionospheric effective height. However, the inhomogeneous ionosphere makes this height vary spatially and temporally, meaning it is not a global constant. In the paper, we review several mapping functions and propose a mapping function that utilizes the ionospheric varying height (IVH). We investigate impacts of the IVH on mapping errors and on the ionospheric modeling, as well as on the satellite and receiver differential code biases (DCBs). Our analysis results indicate that the mapping errors using IVH are smaller than those from the fixed height of 450 km. The integral height achieves smaller mapping errors than using a fixed height of 450 km, an improvement of about 8% when compared with the fixed height of 450 km. And 35% smaller mapping errors were found using HmF2 at the lower latitude. Also, the effects of IVH on the satellite DCBs are about 0.1 ns, and larger impacts on the receiver DCBs at 1.0 ns.
Identify and Monitor Growth Faulting Using InSAR over Northern Greater Houston, Texas, USA
Authors: Qu Feifei , Lu Zhong , Kim Jin-Woo , Zheng Weiyu
Published: June 2019

Growth faults are widely distributed in the Greater Houston (GH) region of Texas, USA, and the existence of faulting could interrupt groundwater flow and aggravate local deformation. Faulting-induced property damages have become more pronounced over the last few years, necessitating further investigation of these faults. Interferometric synthetic aperture radar (InSAR) has been proved to be an effective way for mapping deformations along and/or across fault traces. However, extracting short-wavelength small-amplitude creep signal (about 10–20 mm/yr) from long time span interferograms is extremely difficult, especially in agricultural or vegetated areas. This study aims to position, map and monitor the rate, extent, and temporal evolution of faulting over GH at the highest spatial density using Multi-temporal InSAR (MTI) technique. The MTI method, which maximizes usable signal and correlation, has the ability to identify and monitor faulting and provide accurate and detailed depiction of active faults. Two neighboring L-band Advanced Land Observing (ALOS) tracks (2007–2011) are utilized in this research. Numerous areas of sharp phase discontinuities have been discerned from MTI-derived velocity map. InSAR measurements allow us to position both previously known faults traces as well as nucleation of new fractures not previously revealed by other ground/space techniques. Faulting damages and surface scarps were evident at most InSAR-mapped fault locations through our site investigations. The newly discovered fault activation appears to be related to excessive groundwater exploitation from the Jasper aquifer in Montgomery County. The continuous mining of groundwater from the Jasper aquifer formed new water-level decline cones over Montgomery County, corroborating the intensity of new fractures. Finally, we elaborate the localized fault activities and evaluate the characteristics of faulting (locking depth and slip rate) through modeling MTI-derived deformation maps. The SW–NE-oriented faults pertain to normal faulting with an average slip rate of 7–13 mm/yr at a shallow locking depth of less than 4 km. Identifying and characterizing active faults through MTI and deformation modeling can provide insights into faulting, its causal mechanism and potential damages to infrastructure over the GH.
Capturing Coastal Dune Natural Vegetation Types Using a Phenology-Based Mapping Approach: The Potential of Sentinel-2
Authors: Marzialetti Flavio , Giulio Silvia , Malavasi Marco , Sperandii Marta Gaia , Acosta Alicia Teresa Rosario , Carranza Maria Laura
Published: June 2019

Coastal areas harbor the most threatened ecosystems on Earth, and cost-effective ways to monitor and protect them are urgently needed, but they represent a challenge for habitat mapping and multi-temporal observations. The availability of open access, remotely sensed data with increasing spatial and spectral resolution is promising in this context. Thus, in a sector of the Mediterranean coast (Lazio region, Italy), we tested the strength of a phenology-based vegetation mapping approach and statistically compared results with previous studies, making use of open source products across all the processing chain. We identified five accurate land cover classes in three hierarchical levels, with good values of agreement with previous studies for the first and the second hierarchical level. The implemented procedure resulted as being effective for mapping a highly fragmented coastal dune system. This is encouraging to take advantage of the earth observation through remote sensing technology in an open source perspective, even at the fine scale of highly fragmented sand dunes landscapes.
Optimal DG Placement to Find Optimal Voltage Profile Considering Minimum DG Investment Cost in Smart Neighborhood
Authors: Fathi Mohammadreza , Ghiasi Mohammad
Published: June 2019

Distributed Generations (DGs) have a productive capacity of tens of kilowatts to several megawatts, which are used to produce electrical energy at close proximity to consumers, which of the types of DGs can be named solar cells and Photovoltaics (PVs), fuel cells, micro turbines, wind power plants, and etc. If such kinds of power plants are connected to the network in optimal places, they will have several positive effects on the system, such as reducing network losses, improving the voltage profile, and increasing network reliability. The lack of optimal placement of DGs in the network will increase the costs of energy production and losses in transmission lines. Therefore, it is necessary to optimize the location of such DGs in the network so that the number of DGs, installation locations, and their capacity are determined to which the maximum reduction in network losses occurs. Besides, by applying an appropriate objective function, the evolutionary algorithm can find the optimal location of renewable units with respect to the constraints of the issue. In this paper, the Genetic Algorithm (GA) and the Particle Swarm Optimization (PSO) algorithm are used to address the placement of wind and photovoltaic generators simultaneously in two states: With and without considering the effects of greenhouse gas emission. In this regard, first, an analytical method for optimal DG (wind and PV) placement is presented, then, the proposed approach is applied over a real study case, and the simulation carried out using the MATLAB program; hence, the placement problem was solved using GA and PSO and implemented in the IEEE 33-bus radial distribution system. The obtained results were compared and analyzed. The results of the simulation show the improvement of the voltage profile and the reduction of losses in the network.
Autonomous Motivation as a Mediator Between an Empowering Climate and Enjoyment in Male Volleyball Players
Authors: Mosqueda Sofia , López-Walle Jeanette M. , Gutiérrez-García Pablo , García-Verazaluce Juan , Tristán José
Published: June 2019

The objective of this work was to analyze a mediation model concerning the perception of an empowering climate generated by a coach and enjoyment through the autonomous motivation of athletes. The sample consisted of 71 elite male volleyball players from six countries. The age range was 14 to 18 years (M = 16.5, SD = 0.96). The relationships between the perception of an empowering climate, autonomous motivation, and enjoyment were positive and significant. The mediation model showed that autonomous motivation acts as a mediator in the relationship between the perception of an empowering climate generated by the coach and the enjoyment reported by the athletes.
Resilience in Mountain Farming in Norway
Authors: Daugstad Karoline
Published: June 2019

The concept of socio-ecological farm resilience is used to understand how farmers manoeuvre in a context of change, what choices and priorities they make, and how that subsequently influences the development of the farming landscape. The author uses farm resilience, the capabilities of buffering, adaptation and transformation, and the response of bouncing back or forward as a conceptual frame in a study of farmers in a mountain community in Norway. Interviews were held with selected farmers. The results indicated that the resilience framework is useful in order to understand farmers’ priorities and situations. The author finds that the responses and decisions are in line with all three capabilities as well as with bouncing back and forward. However, most responses were categorized as bouncing back (i.e. adjustments and changes) but the logic of the farm system remained the same.
Respiratory Illness in a Piggery Associated with the First Identified Outbreak of Swine Influenza in Australia: Assessing the Risk to Human Health and Zoonotic Potential
Authors: Smith David W. , Barr Ian G. , Loh Richmond , Levy Avram , Tempone Simone , O’Dea Mark , Watson James , Wong Frank Y. K. , Effler Paul V.
Published: June 2019

Australia was previously believed to be free of enzootic swine influenza viruses due strict quarantine practices and use of biosecure breeding facilities. The first proven Australian outbreak of swine influenza occurred in Western Australian in 2012, revealing an unrecognized zoonotic risk, and a potential future pandemic threat. A public health investigation was undertaken to determine whether zoonotic infections had occurred and to reduce the risk of further transmission between humans and swine. A program of monitoring, testing, treatment, and vaccination was commenced, and a serosurvey of workers was also undertaken. No acute infections with the swine influenza viruses were detected. Serosurvey results were difficult to interpret due to previous influenza infections and past and current vaccinations. However, several workers had elevated haemagglutination inhibition (HI) antibody levels to the swine influenza viruses that could not be attributed to vaccination or infection with contemporaneous seasonal influenza A viruses. However, we lacked a suitable control population, so this was inconclusive. The experience was valuable in developing better protocols for managing outbreaks at the human–animal interface. Strict adherence to biosecurity practices, and ongoing monitoring of swine and their human contacts is important to mitigate pandemic risk. Strain specific serological assays would greatly assist in identifying zoonotic transmission.
Analisis Estimasi Waktu Penyelesaian Proyek Perangkat Lunak Menggunakan Metode PERT
Authors: Mardiani Gentisya Tri
Published: June 2019

Planning the schedule on the construction project software in general is based on experience from a previous project, so that in determining the duration of work using only one of the estimate, or the duration for every job has been set directly by the Project Manager or Project Team in the company. This resulted in when the construction project, when there was the problem of lack of progress, Project Manager of not knowing the possibility of whether the project can continue to run as planned or not. In addition, the determination of one of the estimate for the duration of work not suitable with the characteristics of the software, because in the construction project software there is still uncertainty in the time the completion of projects. The weakness in the use of the value of the estimated duration of is when there are problems that can not be predicted with certainty the length of it, resulting in the duration of work has been set for later employment should be set back, causing projects to be too late. Based on the problem needed an analysis to determine the probability of the completion of projects using the method of program Evaluation and Review Technique (PERT), this method employs three estimates of the duration of the duration of optimistic, the duration of the most likely and the duration of the pessimistic. It is expected to know the time the completion of projects, Project Manager can do the planning of the scheduling of the project. The result of this study shows that the probabilities of the completion of projects can be counted when Project Manager already know the duration of the critical of the schedule the construction project.
Prototype Sistem Informasi Manajemen Potensi Desa Palasari Kecamatan Ujungjaya Kabupaten Sumedang Berbasis Website
Authors: Firdaus Dony Waluya
Published: June 2019

The information management is a bridge for the Government of the village in order to bring transparency and the use of the budget that has already absorbed. The prototype system management information the potential of rural palasari the district ujungjaya sumedang district based on the website using the primary and secondary stages in prototype is on the need, the process of design, building prototypes, evaluation and improvement.
High Capacity and Superior Rate Performances Coexisting in Carbon-Based Sodium-Ion Battery Anode
Authors: Li Yuqian , Zhang Liyuan , Wang Xiuli , Xia Xinhui , Xie Dong , Gu Changdong , Tu Jiangping
Published: June 2019

Amorphous carbon is considered as a prospective and serviceable anode for the storage of sodium. In this contribution, we illuminate the transformation rule of defect/void ratio and the restrictive relation between specific capacity and rate capability. Inspired by this mechanism, ratio of plateau/slope capacity is regulated via temperature-control pyrolysis. Moreover, pore-forming reaction is induced to create defects, open up the isolated voids, and build fast ion channels to further enhance the capacity and rate ability. Numerous fast ion channels, high ion-electron conductivity, and abundant defects lead the designed porous hard carbon/Co
3
O
4
anode to realize a high specific capacity, prolonged circulation ability, and enhanced capacity at high rates. This research deepens the comprehension of sodium storage behavior and proposes a fabrication approach to achieve high performance carbonaceous anodes for sodium-ion batteries.
Update of annual calving front lines for 47 marine terminating outlet glaciers in Greenland (1999–2018)
Authors: Andersen Jonas K. , Fausto Robert S. , Hansen Karina , Box Jason E. , Andersen Signe B. , Ahlstrøm Andreas P. , Van As Dirk , Citterio Michele , Colgan William , Karlsson Nanna B. , Kjeldsen Kristian K. , Korsgaard Niels J. , Larsen Signe H. , Mankoff Kenneth D. , Pedersen Allan Ø. , Shields Christopher L. , Solgaard Anne , Vandecrux Baptiste
Published: June 2019

The Greenland ice sheet has been losing mass in response to increased surface melting (Khan et al. 2015; van den Broeke et al. 2017) as well as discharge of ice from marine terminating outlet glaciers (van den Broeke et al. 2009; Box et al. 2018). Marine terminating outlet glaciers flow to the ocean where they lose mass by e.g. iceberg calving. Currently, the mass loss from the Greenland ice sheet is the largest Arctic contributor to global sea-level rise (van den Broeke et al. 2009, 2017; Box et al. 2018). Therefore, monitoring changes in the Greenland ice sheet is essential to provide policy makers with reliable data.

There is a consensus that most marine terminating outlet glaciers have retreated in recent decades, and that the increased calving rates are a response to recent atmospheric and oceanic warming (e.g. Box et al. 2018; Moon et al. 2018). The rate of dynamic mass loss is determined by changes of the glacier calving front (i.e. its terminus) position, ice thickness and changes in ice flow. Ocean temperature and fjord circulation also influence the calving front stability by melting the glacier below the water line, thinning the ice that is in contact with water (Moon et al. 2014). Change in calving front position is therefore an important indicator for monitoring the dynamic behaviour of the upstream area of the ice sheet, which is further modulated by local topographic features and buttressing effects (Rignot & Kanagaratnam 2006; Nick et al. 2009).

The Programme for Monitoring of the Greenland Ice Sheet (PROMICE) is dedicated to monitoring changes in the mass budget of the Greenland ice sheet, including monitoring of the calving front lines of marine terminating outlet glaciers. Here, we present an updated collection of annual measurements of end-of-melt-season calving front lines for 47 marine terminating outlet glaciers in Greenland between 1999 and 2018. We also present an example application of the data set, in which we estimate area changes for this group of glaciers since 1999. The Greenland calving front lines were measured from optical satellite imagery obtained from Landsat, Aster, and Sentinel-2 (Table 1). The PROMICE calving front product is freely available for download as ESRI shapefiles.
Optimization of molding the polymeric composite material with improved characteristics
Authors: Rodionov V. V.
Published: June 2019

Technological modes of forming a polymer composite material based on fluoropolymer and quartz fabric are investigated. Planning of experiment is carried out. Mathematical processing of the results is performed. Experiments were performed on industrial equipment. The material characteristics have been improved.
Vinyl-functional MQ-resins (review)
Authors: Vinogradov S. V. , Polivanov A. N. , Chuprova E. A.
Published: June 2019

The review of literature and patent sources, as well as advertising materials of foreign companies, available in the public domain, on the synthesis, application and manufacturers of vinyl-functional MQ-resins. The contribution of vinyl MQ resins in the creation of organosilicon materials, widely used in various fields of modern technology, medicine and in everyday life, is shown.
Presentación
Authors: Lecaros Cornejo José Luis
Published: June 2019

La decisión de crear la Revista Oficial del Poder Judicial. Revista de Investigación de la Corte Suprema de Justicia de la República del Perú surge allá por el año 2007 bajo el impulso de la Presidencia de la Corte Suprema de Justicia de la República, en aquel entonces a cargo del Dr. Francisco Távara Córdova, hoy director de la revista y del Fondo Editorial de este poder del Estado.
“Te manque”! Transcriação da identidade e subversão em Paris in Burning
Authors: Correia Paulo Petronilio , Pinto Divino José
Published: June 2019

Resumo: Este ensaio propõe uma discussão em torno dos conceitos de “identidade”, “diferença” e “subversão no filme-documentário Paris in Burning. “Paris in Burning” ou Paris em Chamas tem uma duração de 78 minutos e trata-se de uma crônica sobre a “ball culture”, de New York e as minorias culturais que participavam e organizavam este evento. Ali se misturava desfile de moda com habilidades de dança, movimentos hieróglifos do Antigo Egito e ginástica olímpica. A enigmática cantora-performer Grace Jones utilizou desta cena para compor seu estilo. A comunidade afro americana gay surge trazendo uma série de questões de natureza étnico-raciais, política e de gênero no bojo da arte das múltiplas performances, tendo como fio condutor a arte e a liberdade de “ser o que se quiser”. Paris is Burning trata-se de identidade, diferença, liberdade, arte e transgressão. É um filme que vem abalando as certezas da heteronormatividade compulsória, colocando em xeque o “sexo rei”, o sujeito centrado e trazendo à luz o excêntrico e, junto com ele, a arte da diferença envolvendo, acima de tudo, as relações homoafetivas negras com seus dramas, temores e tremores. Desse modo, as múltiplas identidades são construídas e fabricadas nas relações de poder e ligadas a fortes sistemas de representação.
PEMBELAJARAN LAGU ORAY BUNGKA DALAM PEMBENTUKAN KARAKTER ANAK USIA DINI
Authors: Setiaji Denden
Published: June 2019

Abstrak

Kakawihan barudak yakni salah satunya kawih oray bungka sebgai salah satu media pembelajaran lagu-lagu tradisional Sunda khususnya kini mulai mengalami kemunduran bahkan nyaris dilupakan keberadaannya. Masuknya budaya-budaya barat yang sifatnya lebih popular disinyalir sebagai salah satu pengaruh terbesar menghilangnya kecintaan atau penghargaan terhadap sebuah karya-karya kawih atau kaulinan barudak. Permasalahan-permasalahan yang timbul menggerakan hati para seniman sunda salah satunya Mang Koko yang akhirnya membuat terobosan dalam lagu-lagu kakawihan barudak yang dikemas secara lebih mendalam. Karya yang dibawakan maupun notasi-notasi yang terkandung di dalam karyanya secara tidak langsung dapat mengolah nilai-nilai pendidikan untuk pembentukan karakter anak sejak usia dini.

Kata kunci: Kawih Barudak, Oray Bungka

Abstract

Kawih is a Sundanese song that is not bound by special rules. Kakawihan is a Sundanese song used on traditional children's games. Kakawihan barudak one of them is titled oray bungka is one of the learning media of traditional Sundanese songs that began to decline even almost forgotten. The introduction of a popular western culture is the greatest influence of the disappearance of love or respect for the work of kakawihan barudak. A Sundanese artist that is Mang Koko moved to make a new breakthrough in packing the song kakawihan barudak. The work played and the notations contained in it can indirectly cultivate the value of education for the formation of the character of early childhood.

Keywords: Kawih Barudak;  Oray Bungka
PENGUNAAN MEDIA MOVING FLAHSCARD UNTUK STIMULASI KEMAMPUAN LITERASI ANAK USIA DINI
Authors: Wirman Asdi , Yulsyofriend Yulsyofriend , Yaswinda Yaswinda , Tanjung Andriana
Published: June 2019

ABSTRAK

Aspek kemampuan literasi adalah salah satu potensi anak yang mesti dikembangkan semenjak dini. Pengembangan kemampuan literasi mesti seimbang dan terintegrasi dengan lingkup perkembangan anak lainnya. Optimalisasi pengembangan kemampuan literasi menuntut kesiapan para pendidik yang mampu memberdayakan berbagai fasilitas untuk menfasilitasi perkembangan literasi, termasuk perihal media pembelajaran. Pergeseran ke era digital terkadang menjadikan pembalajaran monoton berbasis teknologi komputer. Pada hal tidak tertutup peluang bagi pendidik untuk menggunakan media yang tidak berbasis komputer. Salah satunya adalah media moving flashcard. Media ini akan menfasilitasi anak baik yang memilii gaya belajar visual, audio apalagi kinestetik. Sehingga anak bisa secara bersama-sama belajar dengan fun dan menyenangkan. Selain itu anak juga bisa berkompetisi, bekerja sama sehingga pembelajaran lebih efektif.

 

 

Kata Kunci: media moving flaschcard; literasi anak usia dini

 

Abstract

The aspect of literacy ability is one of the children's potential that must be developed early. The development of literacy skills must be balanced and integrated with the scope of other children's development. Optimizing the development of literacy skills requires the readiness of educators who are able to empower various facilities to facilitate the development of literacy, including about learning media. Shifting to the digital age sometimes makes monotonous learning based on computer technology. In the case of not being closed, opportunities for educators to use media that are not computer-based. One of them is flashcard moving media. This media will facilitate children who have visual, audio and kinesthetic style of learning. So that children can learn together with enjoyfull and fun. In addition, children can compete, working together so that learning is more effective.

Keywords: Moving Flashcard; Literacy of early childhood
Penggunaan Media Pembelajaran Swimming board dalam Pengembangan Afektif
Authors: Permana Rahmat
Published: June 2019

The problem is the reference authors in this research is to reveal the influence of the media or teaching aids in swimming. The study was conducted in Bandung ganesha School mandala swimming with the sample at the level swimmers who have not received a base class breaststroke swimming lessons. The purpose of this study was to determine the influence of the media in the development of swimming board psychomotor, cognitive and affective. The method used in this study are pre experimental method with a population of 10 people swimmer basis, the determination of the total sample population of the swimmers who have not given breaststroke swimming lessons numbered 10 people. After treatment of the sample given the findings show that the use of swimming board significantly influence the development of breaststroke swimming skills with Sig. 0.000> 0.05.
Penilaian Autentik dalam Pengenalan Literasi Pada Pembelajaran Bahasa Indonesia di Sekolah Dasar
Authors: Pratiwi Anggia Suci
Published: June 2019

This paper is the result of research literature with the aim to describe the practice of teaching literacy in the elementary school. The application of authentic assessment in literacy learning and authentic assessment in the introduction of literacy on learning Indonesian.The method used in this research is literature study with research data obtained from several books and journals, as well as other sources that support the authentic assessment, introduction of literacy and learning Indonesian in elementary school. The process of this literature study is as follows: first, identify the theory systematically, then locate the relevant literature, and analyze documents containing information relate to an authentic assessment of learning literacy on learning Indonesian in elementary school. Therefore, this study is analyzed by using descriptive technique. Research literature indicates that the concept of authentic assessment is appropriate and in line with the learning model that emphasizes on literacy awareness, especially in learning Indonesian at the primary level. Both are aligned in terms of independence and active learners, lots of variety of learning activities, resources and learning products, as well as local and cultural awareness with fixed based on the standards of competence specified. Learning Indonesian covering language skills and literature should be relevant to the social context of the community. Awareness of literacy should be integrated in the learning process at the classroom. The process of developing the ability to speak and compose implemented by developing cognitive abilities, analysis, synthesis, evaluation, and creation through a direct study of the social conditions by using a careful and critical thinking skills.
The Construction of Entrepreneurial Accounting: Evidence from Indonesia
Authors: Hanif Hanif , Rakhman Abdulah , Nurkholis Muhammad
Published: June 2019

Objective - This research aims to identify a cultural theme embedded in entrepreneurial accounting and construct the form of entrepreneurial accounting.
Methodology/Technique – A cognitive anthropology method is employed in this research to investigate the cultural atmosphere of entrepreneurial accounting. This is achieved by conceiving the atmosphere into informants’ (owner/entrepreneur-director) mind-set. The research was conducted at various Padang restaurants in Jakarta, Indonesia, that were classified into four groups based on their size and level of complexity.
Finding and Novelty - Firstly, a number of cultural themes of entrepreneurial accounting are revealed among the four Padang restaurant groups. There are four similar cultural themes: (a) business process turbulence; (b) togetherness intensity; (c) informal control processes; and (d) formal control processes. Despite the fact that all of the restaurants have similar cultural themes, the elements embedded in each theme are different and require certain adjustments in the design of entrepreneurial accounting based on a profit sharing system. Secondly, a construction of entrepreneurial accounting coloured with a unique socio-cultural background was also discovered. This construction enables owner/entrepreneur-directors to execute work programs with a view to achieving the company’s goal to enhance performance, either financially or non-financially.
Type of Paper: Empirical.
Construction and Validation of the Learning Management System Success Scale in the Higher Education Setting
Authors: Alagarsamy Subburaj , Vijay Margret
Published: June 2019

Objective - The concept of education is entirely outdated. Currently, many higher education institutions are adopting blended learning pedagogy to nurture 21st-century skills. The integration of ICT has become a recent global trend in education with universities and colleges using Learning Management Systems (LMS) as their primary method of disseminating and administrating teaching and learning processes. The exploration of the factors crucial for successful implementation of LMS is therefore essential. However, most literature on this topic focuses on the technical quality of LMS’s, and few address the educational quality and efficiency of LMS. Previous research also fails to discuss the conceptualization and measurement of LMS success. This study aims to construct and validate an instrument to measure LMS success in higher education institutions.
Methodology/Technique – Various IS success frameworks were used to design the constructs in this study. A quantitative methodology was adopted with the sample of 379 randomly selected responses from university/college students, academics, and course administrators from India (n=297) and the Maldives (n=82). IBM SPSS AMOS 25 was used to check the validity and reliability of the instrument and to identify the measurement invariance.
Findings & Novelty - This study concludes that information quality, educational quality, system quality, service quality, intention to use, user satisfaction, and net benefits are the critical constructs for measuring LMS success. The findings of this study can be used to support scholars in developing and examining other information system-related theories, as well as to higher education institutions while implementing different LMS’s.
Type of Paper: Empirical.
Research Note: Contribution to Mushroom Flora
of Rawalpindi-Islamabad, Pakistan
Authors: Sultana Kishwar , Riaz Naveeda , Irshad Gulshan , Khan Ali Nauman
Published: June 2019

Seven hymenomycetous fungi (mushrooms) were collected from the twin cities area during July 2008. These were identified as the members of the order Agaricales, class Basidiomycetes. They belong to five genera: *Clitocybe fragrans, *Collybia cookie, *Coprinus radians, *Coprinus sterculinus, *Volvariella bingensis, Volvariella parvula, and Termitomyces microcarpus. Five of them, marked with asterisk were reported for the first time from Pakistan.
Fabrication of phase masks from amorphous carbon thin films for electron-beam shaping
Authors: Grünewald Lukas , Gerthsen Dagmar , Hettler Simon
Published: June 2019

Background: Electron-beam shaping opens up the possibility for novel imaging techniques in scanning (transmission) electron microscopy (S(T)EM). Phase-modulating thin-film devices (phase masks) made of amorphous silicon nitride are commonly used to generate a wide range of different beam shapes. An additional conductive layer on such a device is required to avoid charging under electron-beam irradiation, which induces unwanted scattering events.

Results: Phase masks of conductive amorphous carbon (aC) were successfully fabricated with optical lithography and focused ion beam milling. Analysis by TEM shows the successful generation of Bessel and vortex beams. No charging or degradation of the aC phase masks was observed.

Conclusion: Amorphous carbon can be used as an alternative to silicon nitride for phase masks at the expense of a more complex fabrication process. The quality of arbitrary beam shapes could benefit from the application of phase masks made of amorphous C.
Evidence for Shock-heated Gas in the Taffy Galaxies and Bridge from Optical Emission-line IFU Spectroscopy
Authors: Joshi Bhavin A. , Appleton Philip N. , Blanc Guillermo A. , Guillard Pierre , Rich Jeffrey , Struck Curtis , Freeland Emily E. , Peterson Bradley W. , Helou George , Alatalo Katherine
Published: June 2019

We present optical integral field unit observations of the Taffy system (UGC 12914/15), named for the radio emission that stretches between the two galaxies. Given that these gas-rich galaxies are believed to have recently collided head-on, the pair exhibits a surprisingly normal total (sub-LIRG) IR luminosity (L
FIR ∼ 4.5 × 1010
L
⊙). Previous observations have demonstrated that a large quantity of molecular and neutral gas has been drawn out of the galaxies into a massive multiphase bridge. We present, for the first time, spatially resolved spectroscopy of the ionized gas in the system. The results show that the ionized gas is highly disturbed kinematically, with gas spread in two main filaments between the two galaxies. The line profiles exhibit widespread double components in both the bridge and parts of the disks of the galaxies. We investigate the spatial distribution of the excitation properties of the ionized gas using emission-line diagnostic diagrams and conclude that a large quantity (up to 40%) of the emission from the entire system is consistent with gas heated in ∼200 km s−1 shocks. While the shocked gas is mainly associated with the bridge, there is a significant amount of shocked gas associated with both galaxies. Confirming other multiwavelength indicators, the results suggest that the effects of shocks and turbulence can continue to be felt in a high-speed galaxy collision long after the collision has occurred. The persistence of shocks in the Taffy system may explain the relatively low current star formation rates in the system as a whole.