bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of Small Promoter Amounts on Coke Structure in Dry Reforming over Ni/ ZrO2
Authors: Franz Robert , Kuehlewind Tobias , Shterk Genrikh , Abou-hamad Edy , Parastaev Alexander , Uslamin Evgeny , Hensen Emiel J.M. , Kapteijn Freek , Gascon Jorge , Pidko Evgeny
Published: April 2020

Coke deposition is one of the main challenges in the commercialization of dry reforming of methane over supported Ni catalysts. Besides the coke quantity, the structure of the deposits is also essential for the catalyst lifetime. Accordingly, in this study, we analysed the effect of different metal promoters on both these variables over Ni/ ZrO2 catalysts. Alkali metals are known to block the most active coke forming sites already at low loading, leading to an investigation of Na, K and Cs. To analyse the possible contributions of coke gasification activity of the alkali metals, Mn was additionally used as a comparison. While the conversion is barely affected by the type of promoter, it has profound effect on the amount and the composition of carbon deposits formed during reaction: Addition of K or Mn reduces the coke content to a similar degree but with less carbon fibres observed in the case of K. Promotion by Cs and Na results in the lowest coke content, which is attributed to enhanced coke gasification via carbonate species
Phytochemical analysis and quantitative nutritional evaluvation of zingiber officinale roscae (Ginger)
Authors: Yasodai R  , Kavimani M  , Prabhu K
Published: April 2020

Evaluate the phytochemical analysis and nutritional value of the zingiber officinale roscae and  its therapeutic utility.  Phytochemical analysis is to determine the value of bioactive compounds and minerals in the plants. Phytochemical screening results showed that the presence of alkaloids, saponins, flavonoids, polyphenols, tannins like compound in the various extraction methods. The quantitative study was done by using gas chromatography method and mass spectroscopy analysis. Then the screening of all the analysis revealed that the plant has good metabolites which justify that it has therapeutic utility. The result of the proximate analysis is revealed that in zingiber officinale roscae. It is rich in calcium (46%) when compared to other elements like sodium, iron, cadmium, manganese, mercury which are present in the standard deviation value 1.007 to 0.005%. the most bioactive compound like gingerol, shagoal, curcumin and other compounds were shown in the qualitative analysis. The rhizome of zingiber officinale is also known as ginger. It is the most popular herb used in various foods and beverages and also traditional medicines. The herb is used to various diseases like stomach disorders, diabetes, hyper tension, cancer, spasm, etc .The chemical constituents which are present in the ginger like gingerol, shagoal, etc. The ginger has the properties like anticancer, antitumor, anti inflammatory, neuroprotective, hepto-protective activity etc.
Economy Digitalization under the wave Nature of Innovation Development
Authors: Nureev R. M. , Kаrapaev O. V.
Published: April 2020

The paper is devoted to the consideration of approaches to the study of innovative development frequency and some aspects of the ongoing economy digitalization. The research methodology is based on the innovation theory and the evolutionary theory of economic change. The study was performed using comparative analysis, abductive and inductive methods. The authors proposed to determine the list of technologies of Industry 4.0 based on their influence on the development of the digital economy key factor — digital data. The realization examples of the J. A. Schumpeter’s creative destruction concept by mean of technologies integration that are the basis of the economy digitalization are stated. During the consideration of the innovative context of the economy digitalization, the interrelation of the general patterns of development between the nature of the changes in technological stages in economy and direct natural selection of biological creatures is shown. Having based on the study authors recommend to prioritize the development and / or implementation of the third component of the digital economy, advanced digital technologies, in conformity with the functions they allow to perform extracting the value from digital data. The study may be of interest to government agencies, commercial and international organizations. The practical significance of the study for government agencies, commercial and international organizations consists of the possibility of building strategic and tactical plans for digital development and recording the digitalization results in the context of technologies related to each of the four stages of extracting value from digital data.
Non-contact methods for measuring the surface tension of liquids (review)
Authors: Mordasov M. M. , Savenkov A. P. , Chechetov K. E.
Published: April 2020

A review of non-contact methods for determining the surface tension of liquids along with analysis of the physical effects underlying them is presented. A review of non-contact methods for determining the surface tension of liquids along with analysis of the physical effects underlying them is presented. The advantages, disadvantages, possible ranges of measurements and scope of non-contact methods are discussed. Passive methods do not require any stimulation of the measurement object whereas active methods, when implemented, affect the liquid under study. Electrical, electromagnetic, acoustic, jet, and mechanical methods used for excitation of capillary waves are described in analysis of the methods based on capillary waves intended to study the properties of surface-active substances. We also considered methods based on the processes occurred in an oscillating or rotating levitating drop of liquid (containerless technology) used to study the properties of melts and methods based on local deformation of the liquid surface by the electric field, acoustic pulse, and gas jet. It is shown that aerodynamic methods based on deformation of the liquid surface under control by a gas stream are the most promising for standard laboratory conditions. It is noted that containerless methods should be used in zero gravity tests, whereas the methods based on capillary waves or deformation of the liquid surface with a focused acoustic pulse appeared useful in testing inviscid liquids. Methods based on electrical deformation of the liquid surface under control are limited with the thickness of the liquid layer, relatively high sensitivity to the density and dielectric constant of the liquid, and some other uncontrolled factors. It was also noted that aerodynamic non-contact method of the surface tension determination is characterized by low sensitivity to the density and viscosity of the controlled liquid. The presented review of non-contact methods of the surface tension determination provides optimal choice of the method most suited for solving specific measurement problems.
Methodological approaches to calculation of the main validation parameters of forensic techniques
Authors: Bebeshko G. I. , Lyubetskaya I. P. , Omel’yanyuk G. G. , Usov A. I.
Published: April 2020

Validation of the forensic methods (FM) is one of the main procedures for the standardization of forensic activities used to verify the reliability of the obtained results of the studies. This procedure is widely adopted in the organizations of the European Network of Forensic Science Institutes (ENFSI), which also includes the Russian Federal Centre of Forensic Science of the Ministry of Justice of the Russian Federation (RFCFS). Two types of FM can be distinguished in metrological aspects: forensic method of measurements (FMM) and forensic methods of testing (FMT). We have shown earlier that unlike the developed methodological approaches to the FMM validation which gained practical application in the RFCFS laboratories, the FMT validation procedures give rise to many questions which are widely discussed in the scientific literature. The most significant difficulties in FM validation are attributed to selection of the validation parameters, development of the validation experiment and performance of statistical calculations. We propose methodological approaches to the statistical assessment of the FMM and FMT parameters to be used in practice of forensic experts. Moreover, we present a number of recommendations on the validation procedure, list of the validation parameters, and consider specific schemes of the experiments to be used for assessing of the quality indicators of FMM and FMT. The results of multiple determination of the controlled index in the referenced samples and standard additives are presented to assess the suitability of the FMM using common formulas for calculation of the statistical parameters. Case study of the FMT validation procedure «Microscopic Examination of Textile Fibers» is considered. The expediency of using probabilistic estimate of the share of false test results, as well as calculation of the likelihood ratio in assessing the reliability of forensic methods of testing and competence of the experts is demonstrated.
Teachers’ Identity Work in a Professional Facebook Group
Authors: Lundin Mona , Lantz-Andersson Annika , Hillman Thomas
Published: April 2020

Aim/Purpose: The aim of this study is to investigate posts that deviate from the norm by receiving many more comments than likes in a teacher thematic Facebook (FB) group.

Background: Social media sites are currently becoming standard tools for professional practices. Swedish teachers use thematic FB groups as a platform for professional learning.

Methodology: Data from a large teacher FB group over a three-year period have been collected using programmatic approaches. The interactions have been analysed through a three-phased process: (1) meta-data selection criteria and computational analysis to identify in-depth discussions, (2) content selection criteria, and (3) interaction analysis of selected threads.

Contribution: FB discussions provide a platform for teachers for sharing resources and for emotional and professional support. The support and sharing do not merely constitute explicit requests, but also bring about professional discussions.

Findings: The 79 original posts that significantly deviated from the norm of the group, were formulated as questions and/or requests, which implies that they were designed to attract comments and not only likes. The original posts were organized around four themes: (1a) functionally motivated technical features, (1b) instructionally motivated technical features, (2) pedagogical ideas and premises, and (3) sharing. The nature of these unusual threads was that teachers used the thematic FB-group to share teaching material and resources as well as to give and receive emotional and professional support. Such sharing and support meant a transformation from working in isolation to finding a professional community. In the discussion threads the teachers displayed a variety of identities, such as active and engaged teacher, a thematic expert, or a central group member.

Recommendations for Practitioners: In terms of practical implications, teachers’ competencies towards using social media platforms for collective and constructive discussions need to be strengthened. The challenge is to promote more teachers to partake in challenging such group norms in such groups so that discussions characterised by openness, debate, and constructive criticism are established.

Recommendation for Researchers: It is vital to empirically investigate teachers’ online interactions as new types of collegial discussions that, while rich, could be seen as valuable even if they are unpredictable compared to well-established professional learning efforts.

Impact on Society: This study contributes with knowledge about the impacts of social media platforms as becoming standard tools for all human activities, let alone professional practices.

Future Research: Additional detailed analysis of teachers’ use of social media platforms for professional purposes are needed as well as methodological competence development with regard to computational approaches such as those employed in this study.
COMPARISON BETWEEN LASER ADDITIVE MANUFACTURING AND LASER SPOT WELDING OF TITANIUM GRADE 2
Authors: A. Barbangelo  , L. C. Pedemonte
Published: April 2020

The microstructure and hardness of the melted area in a titanium grade 2 sample processed by Laser Spot Welding were compared to those processed by Selective Laser Melting. The results show that the materials obtained with the two processes have very similar characteristics. On the basis of what had been observed, it can be inferred that the Laser Spot Welding technique could be a low-cost way to verify the possibility of obtaining the desired properties with new alloys processed by Selective Laser Melting.
PERFORMA KONVERGENSI ANGIN PERMUKAAN DIURNAL MODEL REANALISIS ERA5 DI BENUA MARITIM INDONESIA
Authors: Rais Achmad Fahruddin , Soenardi Soenardi , Fanani Zubaidi , Surgiansyah Pebri
Published: April 2020

IntisariPada penelitian ini, penulis mengkaji uji performa kualitatif konvergensi angin permukaan model reanalisis ERA5 di BMI yang dibandingkan dengan hasil penelitian menggunakan limited area model (LAM) oleh Qian, Im dan Eltahir serta Alfahmi et al. Konvergensi angin permukaan dan anomali angin permukaan dihitung dengan menggunakan finite difference.  Hasil penelitian menunjukkan bahwa model reanalisis ERA5 mampu mensimulasikan konvergensi anomali angin permukaan dengan baik terhadap model regional climate model (RegCM) maupun The MIT regional climate model (MRCM) resolusi 27 km di Pulau Jawa dan sekitarnya serta BMI bagian barat dengan nilai konvergensi yang lebih tinggi. Sedangkan terhadap model weather research forecast (WRF) 9 km di BMI bagian timur, model reanalisis ERA5 juga dapat mensimulasikan konvergensi angin permukaan, tetapi dengan nilai yang lebih rendah. Selain itu, model reanalisis ERA5 mensimulasikan konvergensi angin permukaan lebih cepat 2 jam di BMI bagian barat dan timur dibandingkan MRCM27 dan WRF. AbstractIn this study, we discuss the qualitative performance testing of ERA5 surface wind convergence over the Indonesia maritime continent (BMI) compared with research based on limited area model (LAM) by Qian, Im, and Eltahir and also Alfahmi et al. Wind surface convergence and wind surface anomalies convergence is calculated using finite-difference. The results show that the ERA5 reanalysis model can simulate convergence of surface wind anomalies compared with both regional climate model (RegCM) and 27 km MIT regional climate model (MRCM) over Java and also western BMI with higher convergence values. While ERA5 reanalysis model can also simulate convergence of surface winds, but with lower values compared to 9 km weather research forecast (WRF) model over eastern BMI. Besides, the ERA5 reanalysis model simulates convergence of surface winds, which is 2 hours faster over western and eastern BMI compared to MRCM27 and WRF.
Kualitas Air Danau Toba di Wilayah Kabupaten Toba Samosir dan Kelayakan Peruntukannya
Authors: Garno Yudhi Soetrisno , Nugroho Rudi , Hanif Muhammad
Published: April 2020

ABSTRACTThis research was conducted to determine the status of Lake Toba water quality in the area of Toba Samosir (Tobasa) Regency and the feasibility of its use. This study revealed that BOD, COD, iron and free Cl2 of Lake Toba Tobasa regency exceed water quality criteria for Class I and Class II based on Governor Decree No. 1 Year 2009 on Raw water quality of Lake Toba in North Sumatera. High COD and BOD values imply that Lake Toba water was polluted by organic matter presumably originated from floating net cages (KJA), while free Cl2 is thought to originate from domestic waste activities in Parapat City and its surroundings. In general, it was concluded that the water of Lake Toba in the Tobasa Regency did not meet the criteria for clean water and water tourism.Keywords: Lake Toba, raw water, pollution, water qualityABSTRAKPenelitian ini dilakukan untuk mengetahui kualitas air Danau Toba wilayah Kabupaten Toba Samosir (Tobasa) dan kelayakan peruntukannya. Penelitian ini mengungkapkan bahwa air Danau Toba wilayah Kabupaten Tobasa memiliki BOD, COD dan konsentrasi besi dan Cl2 bebas melebihi kriteria mutu air Kelas I dan Kelas II pada Peraturan Gubernur Sumatra Utara No 1 Tahun 2009. Tingginya nilai COD dan BOD mengisyaratkan bahwa perairan Danau Toba tercemar oleh bahan organik yang diduga berasal keramba jaring apung (KJA), sedangkan Cl2 bebas diduga berasal dari limbah domestik kegiatan Kota Parapat dan sekitarnya. Secara umum disimpulkan bahwa air Danau Toba di wilayah Kabupaten Tobasa tidak/belum memenuhi kriteria untuk air baku air minum  dan wisata air.Kata kunci: danau Toba, bahan baku air, pencemaran, baku mutu
Isolasi Bakteri Pelarut Fosfat Genus Pseudomonas dari Tanah Masam Bekas Areal Perkebunan Karet di Kawasan Institut Teknologi Sumatera
Authors: Asril Muhammad , Lisafitri Yuni
Published: April 2020

ABSTRACTPhosphorus (P) is a nutrient that is needed by plants. The availability of this element is greatly influenced by soil pH. As for ultisol soils classified as acid soils, most of the P in the soil is not available and is bound to Fe and Al. Pseudomonas, a phosphate solubilizing bacteria are soil microbes that can improve the availability of P in acid soils. This study aims to obtain Pseudomonas indigenous, a phosphate solubilizing bacteria from the acid soil formerly used by rubber plantations in the Institut Teknologi Sumatera. The study was conducted from April to June 2018 which included soil chemical analysis, isolation of the genus Pseudomonads on specific media, testing of phosphate solubility on solid Pikovskaya medium and simple pathogenicity test on potato tubers. The results showed that the sample soil was acidic with a pH of 4.09 with a P-availability of 0.78 ppm. From the soil samples, four potential isolates were obtained from the genus Pseudomonas, namely GSP 01, GSP 13, GSP 15 and GSP 06, with phosphate solubility indexes of 0.885, 0.639, 0.619 and 0.568, respectively. Isolates have the best phosphate solubilizing index on days 4 through 7. The four potential isolates are not pathogenic, so they can be used as isolates to improve the availability of soil nutrients, especially phosphorus needed by plants.Keywords: acid soil, phosphate solubilizing bacteria, phosphate availability, PseudomonasABSTRAKFosfor (P) merupakan unsur hara yang sangat dibutuhkan oleh tanaman. Ketersediaan unsur ini sangat dipengaruhi oleh pH tanah. Pada jenis tanah ultisol yang digolongkan sebagai tanah masam, sebagian besar dari P di tanah dalam bentuk yang tidak tersedia untuk diserap oleh tanaman dan berikatan dengan Fe dan Al. Pseudomonas pelarut fosfat merupakan mikroba tanah yang dapat memperbaiki ketersediaan P pada tanah masam. Penelitian ini bertujuan untuk mendapatkan Pseudomonas pelarut fosfat indigenous dari tanah masam bekas lahan perkebunan karet di kawasan Institut Teknologi Sumatera. Penelitian dilaksanakan pada bulan April sampai Juni 2018 yang meliputi analisis kimia tanah, isolasi bakteri genus Pseudomonads pada medium spesifik, uji kemampuan pelarutan fosfat pada medium Pikovskaya padat serta uji patogenitas sederhana pada umbi kentang. Hasil penelitian menunjukkan bahwa tanah sampel bersifat masam dengan pH 4,09 dengan P tersedia sebesar 0,78 ppm. Dari sampel tanah diperoleh empat isolat potensial yang diperoleh merupakan genus Pseudomonas yaitu GSP 01, GSP 13, GSP 15 dan GSP 06, dengan indeks pelarutan fosfat berturut-turut sebesar 0,885, 0,639, 0,619 dan 0,568. Isolat memiliki indeks pelarutan fosfat terbaik pada hari ke-4 hingga hari ke-7. Keempat isolat potensial tidak bersifat patogen sehingga mampu dijadikan sebagai isolat yang dapat digunakan untuk memperbaiki ketersediaan unsur hara tanah terutama fosfor yang dibutuhkan oleh tanaman.Kata kunci: bakteri pelarut fosfat, fosfat tersedia, Pseudomonas, tanah masam
Pengujian Zeolit Alam Mordenit Sebagai Penjerap Proses Pendegradasian Kandungan Amonium di dalam Air Tambak
Authors: Nuryoto Nuryoto , Kurniawan Teguh , Kustiningsih Indar
Published: April 2020

ABSTRACTIndonesia has an abundant quantity of natural zeolites that have not yet been utilized maximally. On the other hand, fishpond farmers have a problem regarding the presence of ammonium in the fishpond water which will negatively impact to survival of fish, especially small fish. To solve this problem, this research was utilizing natural zeolite to degrade ammonium in the fishpond water. This research aimed to test mordenite natural zeolite from Bayah as an adsorbent to collaborate some variables impact to reach more maximal adsorption. The variables that were used to be observed were: mordenite natural zeolite from Bayah as an adsorbent which has been activated by 1-7 N H2SO4 and the other was without activation, ammonium concentration of 80-800 ppm, the particle size of adsorbent of 80 and 150 mesh, stirring speed of 600 and 800 rpm, and without stirring by duration adsorption time of 60 minutes. The research results showed that mordenite natural zeolite after activated was able to adsorb of 100% ammonium, while for the mordenite natural zeolite from Bayah without stirring was of 80%, by the same absorption time. These results will give significant benefits for fishpond farmers to increase their productivity because of the increase in fish survival.Keywords: adsorption, adsorbent, zeolite, amoniumABSTRAKKandungan zeolit alam di Indonesia cukup melimpah dan belum termanfaatkan secara maksimal. Pada sisi lain petani tambak dihadapkan pada masalah terdapatnya kandungan amonium di dalam air tambak, yang akan berdampak negatif bagi keberlangsungan hidup ikan, terutama ikan yang masih kecil. Penelitian ini mencoba memanfaatkan zeolit alam guna mendegradasi kandungan amonium dalam air tambak. Tujuan penelitian ini adalah melakukan pengujian terhadap zeolit alam mordenit dari Bayah sebagai adsorben, baik dilakukan dengan pengadukan maupun tanpa pengadukan, serta mengkolaborasi beberapa variabel yang berpengaruh agar hasil adsorpsi lebih maksimal. Observasi dilakukan dengan zeolit alam mordenit dari Bayah yang telah diaktivasi dengan 1-7 N H2SO4 maupun tanpa aktivasi, rentang konsentrasi larutan amonium 80-800 ppm, ukuran partikel adsorben 80 dan 150 mesh, kecepatan pengadukan 600 dan 800 rpm, dan tanpa pengadukan serta lamanya waktu penyerapan 60 menit. Hasil penelitian menunjukan hasil yang sangat baik, dan secara umum zeolit alam mordenit Bayah teraktivasi telah mampu melakukan adsorpsi amonium sebesar 100%, sedangkan untuk zeolit alam mordenit Bayah tanpa pengadukan sebesar 80% pada waktu adsorpsi yang sama.Kata kunci: adsorpsi, adsorben, zeolit, amonium
Formulation and Evaluation of Sun Block Lotion Made from Virgin Coconut Oil (VCO) with the addition of the Extract of Telang Flower (Clitoria ternatea, L) and Pandan Leaves (Pandanumusa paradisiaca, L)
Authors: Ritonga Nia Boru , Rini Rini , Anggraini Tuty
Published: April 2020

Telang flowers (Clitoria ternatea, L) and pandan leaves (Pandanus paradisiaca) are plants that contain phytochemical components that are able to block sunlight from exposing the skin. While Virgina Coconut Oil (VCO) is able to moisturize and soften the skin. This study aims to determine the best formulation in protecting sunlight in application to the skin, as well as knowing the physical and chemical characteristics of skin lotion. This research uses an exploratory method with 2 treatments and 3 replications. The treatment is the addition of telang flower extract and pandan leaf extract to the VCO skin lotion. Evaluation is carried out on the physical and chemical properties and the level of panelist preference. The results showed different results from the two formulations, the highest protection value to the sun was the addition of telang flower extracts expressed by SPF 20.64, the antioxidant activity of 81.66%, pH of 6, 0.012% free fatty acids, a specific gravity of 0.94, 34880 cP viscosity, 65.25% stability, 6.0 cm spreadability, total plate count of  1.3 x 10-10 cfu / ml.
Pengaruh Jenis Kemasan terhadap Daya Simpan Benih Kedelai (Glycine max (L.) Merrill) Varietas Anjasmoro
Authors: Ramadhani Fadilah , Surahman Memen , Ernawati Andri
Published: April 2020

Penelitian ini bertujuan untuk mengetahui pengaruh tiga jenis kemasan yaitu kemasan hermetik, jeriken plastik dan karung beralas plastik terhadap mutu fisik maupun fisiologis benih kedelai (Glycine max (L.) Merrill) varietas Anjasmoro selama penyimpanan. Penelitian dilaksanakan di Laboratorium Ilmu dan Teknologi Benih, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor pada bulan Januari sampai Juli 2016. Rancangan yang digunakan adalah rancangan acak lengkap (RAL) dengan tiga ulangan. Faktor perlakuan yang digunakan adalah jenis kemasan (P) yang terdiri atas tiga taraf yaitu kemasan hermetik (P1), jeriken plastik (P2), dan karung beralas plastik (P3). Penyimpanan dilakukan selama 6 bulan dan diamati setiap bulan terhadap variabel kadar air, daya berkecambah, indeks vigor, kecepatan tumbuh, keserempakan tumbuh dan bobot kering kecambah normal. Hasil penelitian menunjukkan bahwa perlakuan jenis kemasan tidak memberikan pengaruh yang nyata terhadap mutu fisik maupun fisiologis benih kedelai varietas Anjasmoro selama penyimpanan. Perlakuan jenis kemasan dapat mempertahankan viabilitas dan vigor benih kedelai hingga bulan ke-2 penyimpanan. Hasil tersebut menunjukan bahwa benih kedelai dapat disimpan selama 4 bulan setelah panen.
PENGEMBANGAN MEDIA PEMBELAJARAN PUZTES (PUZZLE DAN TEKA-TEKI SILANG) PADA SUB MATERI KONFIGURASI ELEKTRON DAN HUBUNGANNYA DENGANTABEL PERIODIK UNSUR DI SMA MUHAMMADIYAH 1 PONTIANAK
Authors: Suryaningsih Suryaningsih , Kurniasih Dedeh , Kurniati Tuti
Published: April 2020

Rendahnya pengetahuan dan hasil belajar siswa pada sub materi konfigurasi elektron dan hubungan konfigurasi elektron dengan tabel periodik di SMA Muhammadiyah 1 Pontianak disebabkan oleh kesulitan siswa dalam menuliskan konfigurasi elektron. Selama ini, media pembelajaran yang digunakan guru belum mampu membuat siswa paham terhadap penulisan konfigurasi elektron, sehingga perlu dikembangkan media pembelajaran yang dapat memudahkan siswa memahami materi tersebut. Penelitian ini bertujuan menghasilkan media pembelajaran Puztes yang valid, praktis dan efektif. Instrumen penelitian yang digunakan yaitu lembar validasi, angket respon siswa dan guru, serta lembar pretest dan posttest. Jenis penelitian ini adalah Research and Development [R&D] model ADDIE [Analysis, Design, Development, Implementation, Evaluation]. Penelitian ini menggunakan validasi isi dengan pendekatan Content Validity Ratio [CVR]. Dengan demikian, diharapkan media pembelajaran puztes yang dikembangkan layak digunakan sebagai media ajar pada sub materi konfigurasi elektron dan hubungan konfigurasi elektron dengan tabel periodik di kelas X SMA Muhammadiyah 1 Pontianak.
Representações em relatos de memória: o Missionário Católico Quinto Tonini no antigo extremo norte de Goiás na década de 1950
Authors: Silva Raylinn Barros da
Published: April 2020

O objetivo deste estudo é analisar as representações de Quinto Tonini, missionário orionita italiano que viajou pelo antigo extremo norte de Goiás durante a década de 1950. Este estudo é resultado de uma pesquisa bibliográfica que considerou, como sua fonte principal, o livro Entre Diamantes e Cristais, de autoria do referido missionário. A hipótese é que Tonini empreendeu um esforço de memória para que ele próprio e seus missionários fossem lembrados como os desbravadores da região. A metodologia consistiu na análise da obra a partir de conceitos como “desobrigas”, “sertão” e “sertanejos”, interpretados a partir de estudos no campo da história cultural. A justificativa consiste na necessidade de historicizar essas memórias, o que contribui para a compreensão de parte da história religiosa da região.
A Educação Patrimonial nas comunidades detentoras de bens culturais
Authors: Lott Wanessa Pires
Published: April 2020

A problematização deste artigo parte da fala de Neusa de Assis Silva, Capitã do Congado da ‘Guarda de Moçambique de Nossa Senhora do Rosário e Sagrado Coração de Jesus’ – também conhecida como Reinado ‘Os Carolinos’ – de Belo Horizonte. Sobre as agências de salvaguarda do Estado, a capitã afirma: “se eles colocarem as Irmandades como patrimônio e ajudar com alguma coisa, aí vai ser legal, agora se só falar esse nome, deixa do jeito que tá” (SILVA, 2017). A entrevista concedida a mim nos leva a indagar a questão da Educação Patrimonial no interior dos próprios detentores dos bens culturais a serem preservados. As políticas de educação visam prioritariamente a apreensão do bem cultural pela comunidade externa, com ações vinculadas às práticas educativas escolares e/ou em instituições de memória. No entanto, este estudo apresenta a necessidade dos órgãos de preservação voltarem-se também para as próprias comunidades detentoras.
Comunicação, mediação e acessibilidade nos espaços culturais da Universidade Federal de Sergipe
Authors: Jesus Priscila Maria De , Barroso Cristina De Almeida Valença Cunha
Published: April 2020

O presente texto pretende apresentar o panorama dos museus e espaços de memória existentes na Universidade Federal de Sergipe. Por meio de uma revisão de literatura, para a compreensão de termos chaves para a discussão, buscou-se, também, a aplicação de fichas avaliativas para compreender a dinâmica desses espaços dentro da relação Exposição - Educação - Visitante. Desta forma, são apresentados 08 (oito) espaços e seus acervos, que apresentam acervos com características distintas, mas que possuem potencial para exercer a educação não formal, por meio de suas exposições, guiamentos e atividades com o público.
Arı Sütü Miktarının Tahminine Yönelik Olarak Elde Edilen Kategorik Verilerin Bulanık Aralık Regresyon Modeli İle Analizi
Authors: TOPUZ Derviş , ŞAHİNLER Nuray
Published: April 2020

Bu çalışmada, literatürde var olan bulanık mantık yaklaşımı ile oluşturulan aralık regresyon modeline ait bulanık katsayı değerlerinin ve sapmaların hesaplanması ve yorumlanması aşamalarının kategorik veri kümeleri üzerinde sistematik olarak gösterimleri amaçlanmıştır. Örnek veri kümesine ait Kafkas ana arı (Apis mellifera caucasica) ırkının, ana arı yüksüğü başına ortalama arı sütü miktarına, kovan (analı-anasız)(1,2), beslenme yöntemi (1-2), ana arı yaşı (1, 2, 3) ve yüksük sayısı(1,2,..,9)’nın etkisi bulanık aralık regresyon modeli ile modellenmiştir. Modelin uyum iyiliği test ölçüt kriterleri; ortalama mutlak yüzde hata (Mean Absolute Percantage Error; MAPE), hataların karelerinin ortalaması (Mean squared error, MSE), hata kareler ortalamasının kare kökü (Root Mean squared error ,RMS) ve belirtme katsayısı (R2) hesaplanmıştır. Örnek veri kümesine ait hesaplanan değerler, sırasıyla ana arı yüksüğü başına ortalama arı sütü miktarı 191,50 (mg), sapması ise 44,68 (mg) olarak, tahmin edilen ortalama arı sütü miktarı değeri 184.38 (mg) ve sapması ise 20.98 (mg) hesaplanmıştır. 27 iterasyonda oluşturulan bulanık aralık regresyon modelinin bulanıklığı 2197.882, olarak hesaplanmıştır. Üzerinde inceleme yapılan veri kümesi ile tahmin edilen değerler arasında oluşturulan bulanık aralık regresyon modelinin uyumluluğunu gösteren uyum iyiliği test ölçütleri; MAPE = 13.056, MSE = 1481.045, hata RMS = 38.484 ve belirtme katsayısı R2 = 0.9465 değeri (r = 0.9728) hesaplanmıştır.
The Determination of Promising Genotypes in Native Walnut (Juglans regia L.) Populations of Hani (Diyarbakır) District
Authors: ÇİÇEK Mustafa , GÜLSOY Ersin , ASLANTAŞ Rafet
Published: April 2020

This study was carried out to determine the promising walnut genotypes, to two years (2017-2018) in the Hani district of Diyarbakır province. In this study, 19 genotypes were selected as promising from about 4000 seeds origin walnut trees. In these selected genotypes, the fruit weights were between 10.03-15.46 g, kernel weights were between 5.00-6.77 g, kernel rates from 41.18% to 53.65%, shell thicknesses were between 1.47-2.03 mm. In selected genotypes shell color as ‘light’ for 13 genotypes, as ‘dark’ for 6 genotypes; inner shell color as ‘light’ for 6 genotypes, as ‘yellow’ for 9 genotypes and as ‘dark’ for 4 genotypes. Blooming habits of promising genotypes were protandrous in 14 genotypes, protogynous in 1 genotype and homogamous in 1 genotype. The lateral fruitfulness ratio was found to be between 0.00% to -100.00 %.
Árido sintético de plásticos de RAEE. Una alternativa sustentable para morteros y componentes constructivos
Authors: Kreiker Jerónimo , Peisino Lucas E. , Gaggino Rosana , Gómez Melina , González Laria Julián
Published: April 2020

Uno de los residuos de más difícil tratamiento y que ha crecido en magnitud en los últimos años son los residuos de aparatos eléctricos y electrónicos (RAEE). Según un informe del INTI, la cantidad de RAEE generada por año podría ser cercana a 120.000 Tn, sin poder estimar la cantidad acumulada, y sólo un 5% es tratado adecuadamente por empresas recicladoras. De los diferentes materiales constitutivos de los RAEE, la fracción plástica compuesta por la mezcla de plásticos ABS (Acrilonitrilo-Butadieno-Estireno) y HIPS (Poliestireno de Alto Impacto) es la más difícil de insertar en los circuitos de reciclado. Éste es un material con alta disponibilidad y muy buenas propiedades mecánicas que requiere de una inserción inmediata en un nuevo ciclo productivo, ya que su inadecuada gestión resulta en la contaminación del suelo y las napas subterráneas. En nuestro Centro estamos trabajando una tecnología de fabricación de un árido sintético (AS), mediante el encapsulado de las partículas del desecho con sucesivas capas de cemento y aditivos. Los desechos provenientes de dos empresas diferentes, fueron triturados hasta obtener partículas de 2-3 mm. Luego, éstas fueron sometidas a un tratamiento de encapsulado con sucesivas capas de cemento y aditivos hasta alcanzar un máximo del 40% en peso de cemento. También se evaluó la cantidad de cemento necesaria para lograr una alta esfericidad del AS. Se llevó a cabo el análisis granulométrico y morfológico de las partículas de AS con diferente proporción de cemento y aditivos. El AS fue fraguado durante 7 días y utilizado para moldear probetas de ensayo según norma IRAM 1622, con diferentes proporciones de cemento:AS. Las probetas fueron curadas en agua y sometidas a ensayos de resistencia a la compresión simple a los 28 días. Resultados preliminares mostraron un buen comportamiento del AS, con una mayor resistencia mecánica de las partículas con mayor cantidad de capas de cemento. Los valores obtenidos fueron mayores a 2 MPa para todas las proporciones estudiadas, lo que permite proponer su uso en morteros y fabricación de componentes tipo ladrillos, bloques y placas premoldeadas.

 
Arquitectura sustentable, desarrollo experimental	de un módulo habitacional con consumo de energía “0”
Authors: Maidana Alberto , Armelini Griselda
Published: April 2020

En la actualidad son visibles las consecuencias derivadas del cambio climático dentro de lo que podemos citar, disminución o pérdida de glaciares, aumento paulatino de la temperatura promedio a nivel regional y mundial, transformaciones en los regímenes de precipitaciones, pérdida de biodiversidad entre otras. Estas afirmaciones las podemos ver en las conclusiones que anualmente se producen en la Convención Marco de las Naciones Unidas sobre el Cambio Climático (CMCC). Los datos derivados de los informes elaborados por dicha comisión indican que los orígenes del cambio climático se manifiestan en las emisiones de dióxido de carbono (CO2) a la atmósfera y que una de las causas de esto está relacionada con la industria de la construcción (aproximadamente el 40 %). Es importante pensar desde nuestra disciplina que respuesta podemos dar o que aporte se puede realizar desde lo que se denomina “arquitectura sustentable” y lo que ese término implica, para contribuir a la disminución del impacto visible sobre el ambiente. Considerando que la universidad es el ámbito idóneo para la investigación, experimentación  y desarrollo, es que se propone una experiencia que consiste en el diseño de un prototipo experimental que incorpore conceptos de sustentabilidad y  de tecnologías relacionadas con la eficiencia energética. El proyecto de investigación se inscribe en el Programa Cambio de Acción para la Investigación y el Desarrollo (CAI+D) de la Universidad Nacional del Litoral, presentado en el año 2016 y aprobado en el año 2017 con una duración de tres años.

 
Percepção de estudantes de graduação sobre a importância da disciplina Odontologia para pacientes com necessidades especiais
Authors: Silva Tamires Daiane da , Santaella Natalia Garcia , Caminha Raquel D'Aquino Garcia , Santos Paulo Sérgio Da Silva
Published: April 2020

Pessoas com necessidades especiais (PNE) representam 10% da população mundial e suas particularidades, somadas à falta de conhecimentos teóricos e experiência clínica, fazem com que os cirurgiões-dentistas se sintam inaptos para atendê-los. Sendo assim, o objetivo desse estudo foi identificar a importância percebida pelos estudantes de Odontologia sobre a disciplina Odontologia para Pacientes com Necessidades Especiais (OPNE). Trata-se de um estudo exploratório, descritivo e qualitativo, que realizou a coleta de dados por meio de questionários aplicados a 29 estudantes ao final da disciplina optativa de OPNE da Faculdade de Odontologia de Bauru (FOB). Os estudantes reconhecem que a ausência de contato com PNE durante o curso acarretará insegurança profissional para realizar o atendimento odontológico desses pacientes, dificultando assim o acesso a saúde bucal desta população.  A disciplina de OPNE, neste estudo, possibilitou ao estudante de aprender, conviver e realizar atendimento odontológico adequado e humanizado ao PNE.
The Development and Sustainability of School-Based Parent Networks in Low-Income Latinx Communities: A Mixed-Methods Investigation
Authors: Rangel David E. , Shoji Megan N. , Gamoran Adam
Published: April 2020

Research suggests that school-based parent networks have significant benefits for children’s education, yet scholars know very little about how such relationships form and develop over time. This study uses interview and survey data with elementary school parents in predominantly low-income Latinx communities to examine how parents meet one another; how deeper, more trusting relationships develop; and how the size and quality of parent networks change over time in the presence and absence of a family engagement program. Interview data suggest few and infrequent opportunities for parents to meet one another, which makes building relationships characterized by trust and shared expectations more difficult. The quantitative results show positive short-term effects of the program but differential effects over time.
Contributions to the lichen flora of the Kologriv Forest Nature Reserve (Kostroma Region)
Authors: Urbanavichene I. N. , Urbanavichus G. P.
Published: April 2020

New data on the lichen flora of the Kologriv Forest Nature Reserve from the cluster Kologrivskiy are provided. The specimens of lichens, lichenicolous fungi and non-lichenized saprophytic fungi were collected from 9 localities mainly in the Sekha River valley in cluster Kologrivskiy in September 2018. Altogether 110 lichen species, 9 non-lichenized saprobic fungi and 2 lichenicolous fungi are recorded for the first time for the nature reserve, including 69 species and 21 genera new for the Kostroma Region. The genus Leptosillia with species L. wienkampii and lichenicolous fungus Opegrapha phaeophysciae are published for the first time for European Russia. Altogether over 20 indicator species and habitat specialists of biologically valuable forests are known from the study area. Moreover 4 species (Leptogium burnetiae, Lobaria pulmonaria, Menegazzia terebrata, Nephromopsis laureri) are included in the Red Data Book of Russia.
Materials to the lichen flora of the Bauntovsky District, Republic of Buryatia
Authors: Kharpukhaeva T. M. , Lishtva A. V.
Published: April 2020

The paper presents data on 248 lichen species from the Bauntovsky District of the Republic of Buryatia, of them 233 are new to the district. Alectoria sarmentosa subsp. vexillifera new to East Siberia, and 6 species new to the Republic of Buryatia — Arthonia didyma, Aspicilia aquatica, Immersaria athroocarpa, Ionaspis lacustris, Ramboldia elabens, and Parmelia asiatica. Very interesting species is an aquatic lichen Collema ramenskii recorded in mountain lakes.
The mosses of the Khulga River Basin (Subpolar Ural, Khanty-Mansi Autonomous Area — Yugra)
Authors: Lapshina E. D. , Ignatova E. A. , Ignatov M. S. , Ganasevich G. N. , Skuchas Yu. V.
Published: April 2020

Result of an extensive moss study of earlier nearly unexplored areas of the northeastern part of the Subpolar Urals, namely Khulga River Basin is presented. An annotated list of mosses is compiled based on the identification of 1200 specimens collected in the Khulga River Basin (60.45–65.20°N, 60.42–62.20°E). The river starts at the border between the Polar and Subpolar Urals and flows down southwards along the eastern slope of the Ural Mountains to the confluence with the Severnaya Sosva River near the village Saranpaul (Berezovo District, Khanty-Mansi Autonomous Area — Yugra). The list includes 210 moss species, of which 56 species are new to the Khanty-Mansi Autonomous Area — Yugra. Five species are new to the Urals: Didymodon perobtusus, Lewinskya iwatsukii, Schistidium frisvollianum, Sphagnum mirum, Warnstorfia tundrae. Further 9 species were found in the Subpolar Urals for the first time: Dicranum bardunovii, D. laevidens, D. schljakovii, Encalypta pilifera, Flexitrichum gracile, Grimmia elatior, G. tergestina, Orthotrichum hyperboreum, Sphagnum annulatum. The data on occurrence of many moss species, which were previously known from single finds in the mountainous part of the area, is significantly expanded. Ecology, phytocenotic preference and distribution of the recorded species are discussed.
Lichens of the former manors in the Smolensk Region of Russia
Authors: Gagarina L. V. , Chesnokov S. V. , Konoreva L. A. , Stepanchikova I. S. , Yatsyna A. P. , Kataeva O. A. , Notov A. A. , Zhurbenko M. P.
Published: April 2020

The lichen checklist of the former manors in the Smolensk Region of Russia is presented. It comprises 139 species, including 1 lichenicolous lichen and 4 non-lichenized calicioid fungi. Arthonia didyma, Arthrosporum populorum, Athallia pyracea, Bacidina arnoldiana, Calicium glaucellum, Calogaya decipiens, Candelaria pacifica, Candelariella lutella, Chaenotheca furfuracea, Coenogonium pineti, Eopyrenula leucoplaca, Lecania erysibe, Lecanora compallens, L. expallens, L. umbrina, Melanohalea septentrionalis, Myriolecis hagenii, M. perpruinosa, Parmelina tiliacea, Placynthiella dasaea, P. icmalea, Ramalina europaea, Rinodina sophodes, R. subparieta, Scutula dedicata, Strangospora pinicola, and Trapeliopsis flexuosa are new to the Smolensk Region.
Indigenous peoples and local communities' bio-cultural knowledge at the interface of marine research
Authors: Lee Emma , Hunter@csiro.au Cass , Ratana Kelly , Sugimoto Aoi
Published: April 2020

Globally,
the governance and management of land and sea resources by Indigenous peoples
and local communities has existed for tens of thousands of years and continues
to exert influence over a quarter of the worlds’ surface today (Garnett et al
2018). Yet the primacy of Western science still overshadows the bio-cultural
knowledges of Indigenous peoples and local communities. To move beyond
exclusions and disenfranchised worldviews, science theory and practice must
begin to embrace, engage, respect and support Indigenous peoples and local
communities’ bio-cultural knowledges. We draw on the marine research sector,
specifically fisheries, to demonstrate where knowledges are providing useful
expertise and call for multidisciplinary approaches to co-productions of
science.

(Prepared for Nature Communications review).
Reporte metodológico Encuesta Zona Cero
Authors: de Sociología Contingente Núcleo
Published: April 2020

El presente informe tiene por finalidad entregar un reporte detallado de las distintas partes del proceso de la Encuesta Zona Cero 2019 con tal de asegurar la replicabilidad de la información aquí presentada. El documento tiene las siguientes secciones: 1) Generación de herramienta de levantamiento de datos; 2) Consideraciones metodológicas generales; 3) Reporte de terreno; 4) Codificación y tratamiento de datos; 5) Resultados descriptivos univariados.
Jelajah Sejarah Meraup Makna
Authors: Iwamony Rachel
Published: April 2020

Sejarah selalu memberi nilai bagi kehidupan. Memang selalu ada yang bisa mengerikan dalam hubungan dengan sejarah manusia. Tapi pada saat yang sama, selalu ada yang membuat masa lalu berharga, justeru dalam kerapuhan manusia, demikian kata Goenawan Mohamad. Meskipun pembaca menjumpai berbagai artikel dari bidang ilmu yang beraneka ragam, namun pada dasarnya artikel-artikel tersebut memperlihatkan upaya menjelajahi sejarah; Jelajah tentang aneka peristiwa, beragam pemikiran, kompleksitas suatu masalah, ramainya sebuah debat dan lajunya peradaban manusia. Dengan demikian, benang merah yang menghubungkan satu tulisan dengan tulisan lainnya dalam buku ini adalah jelajah sejumlah sejarah dan raupan sejumlah makna.
Perangkat keras komputer
Authors: Hafizah
Published: April 2020

Perangkat keras adalah salah satu komponen dari sebuah komputer yang sifat alatnya bisa dilihat dan diraba secara langsung atau yang berbentuk nyata, yang berfungsi untuk mendukung proses komputerisasi. Hardware dapat bekerja berdasarkan perintah yang telah ditentukan ada padanya, atau yang juga disebut dengan istilah instructionset. Dengan adanya perintah yang dapat dimengerti oleh hardware tersebut, maka hardwere tersebut dapat melakukan berbagai kegiatan yang telah ditentukan oleh pemberi pemerintah.Berdasarkan fungsinya, perangkat keras komputer dibagi menjadi empat yaitu : perangkat masukan, perangkat pemrosesan, perangkat tambahan dan perangkat pengeluaran. Perangkat masukan merupakan bagian yang menerima dan memasukkan data, perangkat pemrosesan merupakan bagian yang melaksanakan dan mengatur instruksi. Dan perangkat tambahan adalah proses comunication link merupakan untuk berkomunikasi dengan dunia luar.
Perangkat Keras Komputer
Authors: Rafiela TKarina
Published: April 2020

Perangkat keras komputer (hardware) adalah salah satu komponen dari sebuah komputer yang sifat alatnya dapat dilihat dan disentuh secara langsung atau berbentuk nyata, yang berfungsi untuk mendukung proses komputerisasi. Berdasarkan fungsinya, perangkat keras komputer terbagi menjadi: input device (unit masukan), process device (unit pemrosesan), output device (unit keluaran), backing storage (unit penyimpanan), dan periferal (unit tambahan).
Makalah Lompat Jauh
Authors: Najmi Fathi
Published: April 2020

Pola hidup sehat mempunyai peranan yang penting untuk meningkatkan dan mempertahankan kebugaran jasmani seseorang. Faktor-faktor yang mempengaruhi kesehatan di dalam pola hidup sehat adalah makanan dan olahraga. Di samping makanan dan olahraga yang dapat mempengaruhi kesehatan adalah gaya hidup seseorang, misalnya suka merokok, minum minuman keras, dll. Untuk mendapatkan kebugaran jasmani yang baik perlu memahami pola hidup sehat, yaitu: (1) Makan yang cukup, baik kualitas maupun kuantitas, (2) Istirahat, supaya tubuh memiliki waktu untuk recovery (pemulihan), sehingga dapat melakukan aktivitas dengan nyaman, dan (3) Berolahraga, yaitu salah satu alternatif yang paling efektif untuk memperoleh kebugaran, sebab berolahraga bermanfaat untuk fisik, psikis, maupun sosial. Di samping itu untuk meningkatkan dan mempertahankan kebugaran jasmani perlu menghindari gaya hidup yang kurang baik, supaya tidak mempengaruhi kesehatan, sehingga tubuh selalu dalam keadaan sehat dan bugar.