bluuebunny/crossref_metadata_2025_split huggingface dataset:
Actividades colaborativas en el aprendizaje de marcadores discursivos en estudiantes universitarios
Authors: Villar Revello Erika María Villar Revello , Fuerte Tapia Alejandra , Vertiz Osores Joaquín , Gálvez Suárez Eric , Arévalo Tuesta José Antonio 
Published: November 2018

<p>El objetivo de la presente investigación es analizar la influencia de las actividades colaborativas en el aprendizaje de los marcadores discursivos en los estudiantes del curso Comprensión y Producción de Lenguaje de una universidad privada de Lima. Es una investigación aplicada con un diseño cuasi experimental, conformándose los grupos, experimental y control. Para la recolección de datos, se empleó la Prueba sobre marcadores discursivos. Asimismo, se efectuó sucesivamente una medición pre test, y obtenidos los resultados, se aplicó el taller sobre actividades colaborativas, compuesto por 7 sesiones, en el grupo experimental, para luego efectuar las mediciones post test, en ambos grupos. La contrastación de hipótesis se efectuó con la prueba U de Mann Whitney. Los resultados mostraron que hubo influencia significativa del trabajo colaborativo sobre el aprendizaje de los marcadores discursivos en los estudiantes objeto de estudio.</p>
Ethanol Extract, Ethyl Acetate Extract, Ethyl Acetate Fraction, and n-Heksan Fraction Mangosteen Peels (Garcinia mangostana L.) As Source of Bioactive Substance Free-Radical Scavengers
Authors: Pratiwi Liza , Fudholi Achmad , Martien Ronny , Pramono Suwidjiyo 
Published: November 2018

<span>Mangosteen peels (Garcinia mangostana L.) is well known as an excellent source of antioxidative compounds. The name of mangosteen is xanthone. Antioxidant of mangosteen peels can be extracted by ethanol, etyl acetate and can be fractinated by etyl acetate and n-hexane. The aim of this research was to compare the antioxidant activity of the peel extract by ethanol and etyl acetate and fractinated by etyl acetate and n-hexane. Extract and fraction exhibited higher scavenging activity of DPPH. </span><span lang="EN">The purpose of this study was to compare antioxidant activity of ethanol extract, ethyl acetate extract, fraction of ethyl acetate and n-hexane fraction.</span><span> The</span><span lang="EN"> antioxidant activity </span><span>test </span><span lang="EN">using DPPH method with UV-Vis spectrophotometer</span><span>. Ethanol extract shown IC50 value 5,03 µg/mL, ethyl acetate extract shown IC50 value 41,56 µg/mL. Ethyl acetate fraction shown IC50 value 2,78 µg/mL, and n-hexane fraction with IC50 22,33 µg/mL. It means peel extract and fraction by mangosteen peels has very strong antioxidant activity and ethyl acetate fraction that its antioxidant activity higher that the other solvent.</span>
Optimization and Antioxidant Activity Test Of SMEDDS Bay Leaf with Palm Kernell Oil as Oil Phase
Authors: Prihapsara Fea 
Published: November 2018

<em>One of the plants which can produce antioxidants is the bay leaves (Syzygium polyanthum (Wight) Walp). Generally, extract have big size molecule and low solubility. To overcome low solubility of extract, it was formulated into self microemulsifying drug delivery system (SMEDDS) using oil Palm Kernel Oil (PKO) as a carrier oil. This research, aims to produce mikrometer-sized emulsion and thus can be used at low dose in SMEDDS mikroemulsion preparation. And this research was conducted to determine the antioxidant activity of SMEDDS bay leaf extract. Palm kernell oil is used because its suitable for SMEDDS and has medium chain trigliseride that can Increase drug transport through lymphatics thereby reducing first pass metabolism. Optimization of surfactant, cosurfactant and oil phase was determined with trial and error method. The results showed that the optimum SMEDDS formula was tween 80 : PEG 400 : Palm Kernell Oil (1,6 : 2,4 : 1) in 5 mL. SMEDDS extract of bay leaves had emulsification time 13.93 seconds, average of droplet size was 218,9 nm and polidisperse index 0,203. Morphological observation showed the mikroemulsion particles had spherical shaped. SMEDDS product of bay leaf extract has powerful antioxidant potential, the value of IC<sub>50</sub> is 40,7177 ppm. </em>
Efek Antiinflamasi Ekstrak Etanol Krokot (Portulaca oleracea, L.) pada Udema Tikus yang di Induksi Karagenin
Authors: Andayani Dahlia , Suprihartini Endang , Astuti Maulida 
Published: November 2018

<p>Krokot (<em>Portulaca oleracea</em>, L.) merupakan tanaman yang dapat digunakan sebagai obat tradisional untuk menyembuhkan penyakit disentri, penyakit kulit, nyeri dan bengkak. Penelitian ini bertujuan Untuk mengetahui efek antiinflamasi krokot pada tikus yang diinduksi karagenin. Rancangan Penelitian menggunakan pre and post test only control group design dengan lima kelompok perlakuan yaitu kelompok I sebagai kontrol negatif, kelompok II kontrol positif (Na diklofenak dosis 50mg), kelompok III ekstrak etanol krokot dosis 100 mg, kelompok IV ekstrak etanol krokot dosis 200 mg, kelompok V ekstrak etanol krokot dosis 400 mg. Masing masing kelompok terdiri dari 3 ekor tikus. Efek antiinfllamasi dievaluasi dengan menghitung total volume udem pada menit ke 0, 60, 120, 180, 240 dan 300. Hasil penelitian menunjukkan kelima kelompok perlakuan memiliki total volume udem yang berbeda bermakna dengan nilai signifikansi lebih kecil dari 0,05. Dari hasil perhitungan persen daya antiinflamasi diperoleh nilai dari yang tertinggi natrium diklofenak, ekstrak dosis 400 mg, ekstrak dosis 200 mg dan ekstrak dosis 100 mg yaitu: 32,95%, 30,20%, 20 % dan 16, 73%. Dari hasil penelitian dapat disimpulkan bahwa ekstrak etanol krokot memiliki efek antiinflamasi pada udem tikus tyang diinduksi karagenin. </p>
Results of Simulation and Physical Modeling of the Computerized Monitoring and Control System for Greenhouse Microclimate Parameters
Authors: Laktionov I. S. , Vovna O. V. , Zori A. A. , Lebedev V. A. 
Published: November 2018

Abstract
The article focuses on the research results concerning development and laboratory testing of simulation and physical models of the computerized monitoring and control system for industrial greenhouse microclimate parameters. The simulation model of the system has been developed and tested in the environment of Proteus computer-aided design. The hardware component has been substantiated and implemented, and the software of the system physical model has been developed by using modern microprocessor and sensor technologies. The priority research of the developed computerized system is identified in order to increase the productivity of industrial greenhouse complexes.
PERFORMANCE EVALUATION OF SVM KERNELS ON MULTISPECTRAL LISS III DATA FOR OBJECT CLASSIFICATION
Authors: Prasad S.V.S. , Savithiri T. Satya , Krishna V. Murali 
Published: November 2018

Abstract
Object based classification plays an important role in every field. Support vector machine is the popular algorithm for object based classification. Support vector machine classifies the data points using straight line. Some datasets are impossible to separate by straight line. To cope with this problem kernel function is used. The central idea of kernel function is to project points up in a higher dimensional space hoping that separability of data would improve. There are various kernels in the LIBSVM package. In this paper, Support Vector Machine (SVM) is evaluated as classifier with four different kernels namely linear kernel, polynomial kernel, radial basis function kernel and sigmoid kernel. Several datasets are being experimented to find out the performance of various kernels of SVM .By changing the value of ‘C’ and γ varying results are observed. Among these RBF kernel with a value of C = 1000 and gamma=0.75 got an excellent accuracy of 99.1509%.The SVM-RBF kernel gave an edge over the other kernels with an accuracy of 99.1509% while linear at 98.9623%, polynomial at 98.6792% and Sigmoid at 98.5849%.
PLANNING OF REMOTE EXPERIMENTAL RESEARCH ON EFFECTS OF GREENHOUSE MICROCLIMATE PARAMETERS ON VEGETABLE CROP-PRODUCING
Authors: Laktionov I.S. , Vovna O.V. , Zori A.A. 
Published: November 2018

Abstract
the article presents a plan on experimental studies on substantiation of structural and algorithmic organization of computer-aided systems of remote adaptive monitoring and control of microclimate parameters of commercial greenhouses. There was developed a program component for remote monitoring of physicochemical parameters of greenhouse microclimate using the ‘Internet of Thing’ technology and modern mobile devices. There was offered a hardware component architecture of the system of monitoring and control of greenhouse microclimate parameters. Mathematical model of experimental research of the system was developed for five independent factors based on rotatable design planning of the second order. There were substantiated trends of priority research on efficiency improvement of commercial greenhouse complexes through realization and implementation of adaptive control algorithms of modes for vegetable crops growing.
I-PD CONTROL DESIGN AND ANALYSIS IN AN ISLANDED MICROGRID SYSTEM
Authors: Panjaitan S. D. , Kurnianto R. , Sanjaya B. W. , Turner M. C. 
Published: November 2018

Abstract
Voltage and frequency control is very important especially to face the migration from conventional to smart grid. In conventional way, voltage and frequency are regulated from the main power plant. However, in a smart grid system, the controller can be distributed into sub-system. A microgrid as a key sub-system must have independent control especially in islanded or stand-alone mode. This paper presents an approach named Integral-Proportional Derivative (I-PD) to control the three-phase voltage in a microgrid. In the simulation using MATLAB, a distributed energy resource unit applying voltage-source converter in order to have three-phase voltage from a DC-source is taken into account. Using system identification to simplify the controller design generates a linear model of the system. The compensated system shows a very good reference tracking capability during set point and load changes. It also reduces the coupling effect due to active and reactive power.
A Model for Evolutionary Ecology of Disease: The Case for Caenorhabditis Nematodes and Their Natural Parasites
Authors: GIBSON AMANDA K. , MORRAN LEVI T. 
Published: November 2018

Abstract
Many of the outstanding questions in disease ecology and evolution call for combining observation of natural host–parasite populations with experimental dissection of interactions in the field and the laboratory. The “rewilding” of model systems holds great promise for this endeavor. Here, we highlight the potential for development of the nematode Caenorhabditis elegans and its close relatives as a model for the study of disease ecology and evolution. This powerful laboratory model was disassociated from its natural habitat in the 1960s. Today, studies are uncovering that lost natural history, with several natural parasites described since 2008. Studies of these natural Caenorhabditis–parasite interactions can reap the benefits of the vast array of experimental and genetic tools developed for this laboratory model. In this review, we introduce the natural parasites of C. elegans characterized thus far and discuss resources available to study them, including experimental (co)evolution, cryopreservation, behavioral assays, and genomic tools. Throughout, we present avenues of research that are interesting and feasible to address with caenorhabditid nematodes and their natural parasites, ranging from the maintenance of outcrossing to the community dynamics of host-associated microbes. In combining natural relevance with the experimental power of a laboratory supermodel, these fledgling host–parasite systems can take on fundamental questions in evolutionary ecology of disease.
First Report of Matricidal Hatching in Bursaphelenchus xylophilus
Authors: ABELLEIRA ADELA , PRADO ALICIA , ABELLEIRA-SANMARTÍN ANDREA , MANSILLA PEDRO 
Published: November 2018

Abstract
The reproductive strategy of the pinewood nematode (PWN), Bursaphelenchus xylophilus, is sexual amphimictic and oviparous. The incidence of intrauterine egg development and hatching in plant-parasitic nematodes is not a very common phenomenon. During the process of maintaining and breeding a B. xylophilus population isolated in Spain under laboratory conditions, evidence of matricidal hatching was observed. This is the first described case of this phenomenon in this species.
Pathogenic Potential of Fresh, Frozen, and Thermally Treated Anisakis spp. Type II (L3) (Nematoda: Anisakidae) after Oral Inoculation into Wistar Rats: A Histopathological Study
Authors: MORSY KAREEM , BADR ABEER MAHMOUD , ABDEL-GHAFFAR FATHY , EL DEEB SOMAYA , EBEAD SAMAR 
Published: November 2018

Abstract
The third-stage (L3) larvae of Anisakis are the etiological agents of human anisakiasis caused by consumption of raw or undercooked seafood infected with anisakid nematodes. Infection with these worms is associated with abdominal pain, nausea, and diarrhea and can lead to massive infiltration of eosinophils and the formation of granulomas in the gastrointestinal tract if the larvae are not removed. Food allergy affects populations worldwide, and despite several reports on the presence of the potentially zoonotic nematodes among edible fishes in Egypt, there are few immunological and molecular studies investigating the epidemiology of these parasites. Anisakidosis, a human infection with nematodes of the family Anisakidae, is caused most commonly by Anisakis spp. In the present study, seventy specimens of the European seabass Dicentrarchus labrax commercialized in Alexandria city along the Mediterranean Sea were acquired during the period from July to December, 2015. Fish were necropsied and dissected to investigate the presence of nematode larvae. Thirty fish (42.9%) of the total were parasitized by nematode larvae which were morphologically identified as Anisakis spp. Type II (L3) according to light and scanning electron microscopy. The pathogenic potential of oral inoculation of fresh, frozen, and thermally treated larvae into Wistar rats was elucidated by histological examination of their thymus and spleen. Results obtained indicated that neither cooling nor freezing of the parasite could destroy their allergenic capacity. So, it is important to create a wider awareness of this potential risk to human health. It is becoming increasingly likely that the impact of Anisakis spp. on human health has been underestimated, and it is perhaps time to consider more sweeping measures than those currently enforced to protect the public health.
Mechanism of aniline adsorption on post-crosslinked resins: pore structure and oxygen content
Authors: Yu Wenhao , Xu Chao , Yin Chai , Yu Shitao , Sun Weizhi , Xie Congxia , Xian Mo 
Published: November 2018

Abstract
A series of post-crosslinked resins were synthesized from macroporous chloromethylated styrene-divinylbenzene copolymer by controlling post-crosslinked reaction conditions. Adsorption study towards aniline showed that the three resins, ST-DVB-WH5, ST-DVB-WH6, and ST-DVB-WH7, prepared at different temperatures, and which had nearly identical static adsorption capacity, displayed great disparity in kinetic behavior. The rate constant of ST-DVB-WH7 by the pseudo-first-order model was 1.50 and 1.19 times higher than that of ST-DVB-WH5 and ST-DVB-ST-DVB-WH6. Further analysis of the diffusion model showed that the three resins exhibited different diffusion rates due to the difference in oxygen content and pore structure of each resin. The results showed that the adsorption capacity was mainly decided by the pore volume within 1.14 and 3.42 nm and the adsorption rate was mainly decided by the oxygen content of the resin. In addition, as the best synthetic resin for aniline adsorption, the equilibrium adsorption capacity of ST-DVB-WH7 was 1.57 times and 1.44 times higher than that of H-103 and NKA-II, respectively.
Modern trends of global oil market development
Authors: Perevertova Vera Sergeevna 
Published: November 2018

Oil – a valuable energy resource, has an enormous impact on the world economy. According to the latest statistics global oil reserves will last 42 years, but with the development of new technologies it made possible the development of hard-to-reserves, which will help to extend the use of such a valuable energy resource for the long term. This article describes the main trends in the global oil market and analyzes the current situation on the world oil market.
Usage of contemporary literature in foreign languages in class
Authors: Makarenko Aliona Vasilevna 
Published: November 2018

The main purpose of every teacher is to help students understand the language and increase their motivation in learning foreign languages. One of the most effective methods in motivating is the usage of contemporary literature in class. The main advantages of such literature as well as the requirement about how to choose the necessary literature are mentioned in this article. The research is also stating the necessity of using foreign literature in the context of different competence including the linguistic and social and cultural ones, including different points of approaches on this subject – personal, communicative and integrated. The example in the work is taken from the book «Harry Potter and the Goblet of Fire» by J.K. Rowling.
Controllable Magnetoactive Polymer Conduit
Authors: Diermeier A. , Sindersberger D. , Krenkel L. , Rosell X. C. , Monkman G. J. 
Published: November 2018

Objective:
Magneto-active Polymers (MAP) are smart materials whose mechanical characteristics, such as elastic and shear moduli, may be controllable by means of an externally applied magnetic field.

Methods:
Various additives may be used to influence the characteristics of the polymer matrix whilst a suspension of soft and/or hard magnetic particles determine the magnetic properties of the composite. Both pre-cure and post-cure magnetization is possible.

Results:
A range of control strategies have been investigated for evaluation of the system using fluids of differing kinematic viscosity.

Conclusion:
Depending on the degree of magnetic field homogeneity, magneto-deformation and magnetostriction contribute to MAP actuation. This paper presents a novel application in the form of a peristaltic MAP tube system, applicable to flow control and pumping of hemorheological fluids in blood circulatory systems for biomedical research purposes.
DAMPAK DAN UPAYA PENGENDALIAN SEMBURAN LUMPUR PANAS DI PORONG SIDOARJO
Authors: Wijaya R. Andy Erwin 
Published: November 2018

AbstrakThe gas exploration by PT Lapindo Brantas have caused hot mud flow at Porong area. Sidoarjo, East Java. The hot mund flow have flooded some locations i.e. resident, agriculture and industry areas. Contamiation of this hot mud flow have results negative impact to society health, economics and environment. This case of hot mud flow from Banjar Panji-1 well do not be caused by liquid facation after Yogyakarta earthquake but that’s because underground blowout. The hot mud flow efforts controlled can be done by snubbing unit, side tracking and relief well. Up to now the hot mud flow not be able stopped. Kata kunci : (lumpur lapindo, hot mud flow, dampak lumpur Porong)
APLIKASI SISTEM INFORMASI GEOGRAFIS UNTUK MEMBUAT PETA PENDUDUK DIGITAL (KASUS KECAMATAN TAWANGMANGGU)
Authors: Sugiharyanto Sugiharyanto , Satya Nurhadi 
Published: November 2018

AbstrakPenelitian ini bertujuan untuk membuat model penyajian peta dalam bentuk digital yang dapat disimpan, diakses, diupdate dan dicetak secara masal. Penelitian ini merupakan penelitian yang merancang dan membuat model peta penduduk digital.Peta penduduk digital dapat dimanfaatkan untuk memantau perkembangan jumlah penduduk suatu kecamatan dan sebagai bahan acuan untuk melakukan kebijakan-kebijakan pengembangan wilayah. Peta Tentatif Rupa Bumi Indonesia shet Tawangmangu dan Poncol serta data monografi Kecamatan Tawangmanggu digunakan sebagai masukan yang terdiri dari informasi tentang jumlah penduduk dan jumlah penduduk usia sekolah. Kecamatan Tawangmangu terdiri dari sepuluh desa yang mempunyai potensi alam dan penduduk yang cukup tinggi sehingga memerlukan informasi yang diakses oleh banyak kalangan karena masih terbatasnya informasi dalam bentuk peta digital. Proses digital on screen dilakukan dengan perangkat lunak AutoCad Map 2000i untuk membuat layer administratif, jalan, sungai, dan permukiman, sedangkan editing, labeling, penghitungan koordinat astronomis dan pembangunan tipologi layer digunakan dengan perangkat lunak Arc View versi 3.5. Layout peta digital menggunakan perangkat lunak Arc View versi 3.3 dan pembuatan halaman muka menggunakan Microsoft Front Page XP yang berbasiskan Hypertext Markup Languange (HTML).Dan hasil perancangan pembuatan peta penduduk digital ini dapat dibuat tiga buah peta digital, yaitu: peta jumlah penduduk, peta jumlah penduduk menurut usia sekolah 13-18 tahun. Dalam penelitian ini peta digital sudah dapat diakses lewat browser internet karena sudah menggunakan protokol Hypertext Markup Languange pada halaman mukanya. Kata kunci : peta digital, digitasi layer, hypertext markup languange
Ada Apa Dengan Geografi Manusia?
Authors: Hastuti Hastuti 
Published: November 2018

Abstrak Geografi mengalami dinamika dalam menggambarkan muka bumi sebagai tempat dan ruang bagi manusia melangsungkan kehidupannya mulai dari identifikasi secara sederhana hingga menggunakan model pencatatan dan sketsa kemudian memanfaatkan alat bantu seperti peta, citra radar, statistik, matematika, dan Sistem Informasi Geografi. Dalam pengembangan geografi sesuai untuk menjelaskan fenomena muka bumi dalam konteks kekinian seiring dengan proses perkembangan ilmu dan teknologi. Geografi sebagai ilmu sintetik tentu saja memandang fenomena geosfer dengan pendekatan keruangan, kelingkungan dan kewilayahan diorientasikan pada pemecahan masalah sebagai pertimbangan pengambil kebijakan untuk kesejahteraan umat manusia. Ketika menolak deterministik geografi meletakkan manusia sebagai faktor utama menawarkan posibilsm kemudian probabilisme mengandung unsur hubungan timbal balik antara alam dan manusia dalam struktur, pola dan proses pada tempat dan waktu tertentu di muka bumi kemudian menekankan kajian antropocentries. Antropocentris menekankan manusia sebagai pusat perhatian geografi sebagai awal semakin berkembangnya devisi geografi manusia. Di Indonesia ketika geografi dikembangkan mulai dari SD sampai perguruan tinggi seolah kurang konsisten terbagi dalam devisi terpisah dalam ranah ilmu alam dan ranah ilmu humaniora. Masih perlu perhatian lebih serius agar geografi manusia dapat memberikan kontribusi pada pengembangan geografi sebagai ilmu dan pemecahan persoalan manusia di muka bumi.
METODE PEMBELAJARAN GEOGRAFI
Authors: Suparmini Suparmini 
Published: November 2018

Abstrak Pendekatan dan metode pembelajaran geografi atau dipahami oleh para guru agar dapat melaksanakan pembelajaran secara efektif untuk meningkatkan kualitas pembelajaran. Dalam pengelolaan pembelajaran, guru perlu mengembangkan metode, media, dan sumber belajar, serta mampu melaksanakan pembelajaran menggunakan pendekatan yang sesuai dengan tujuan dan karakteristik geografi. Pemahaman guru geografi dalam mempelajari hakikat pembelajaran, metode, dan teknik strategi pembelajaran diharapkan dapat membantu guru mempunyai gambaran komprehensif tentang pendekatan pembelajaran yang akan digunakan dan metode pembelajaran yang dipilih. Penguasaan kompetensi tersebut oleh guru, diharapkan kegiatan pembelajaran dapat mencapai hasil yang sesuai dengan yang telah ditetapkan. Kata Kunci : Metode, Pembelajaran, Geografi