bluuebunny/crossref_metadata_2025 huggingface dataset:
Concentration of Heavy Metals in the Soils near Some Mechanic Villages in Abeokuta Metropolis, Ogun State, Nigeria.
Authors: Olufunmilayo. O Olayinka , Oludare H. Adedeji
Published: May 2018

Soils and water bodies near auto mechanic village (MV) contain heavy metals, which pollute the environments and are hazardous to human and environmental health. Assessment of heavy metal concentration in three replicate soil and water samples from three MVs (Fajol, Id-Aba and Kotopo) in Abeokuta metropolis in Nigeria was conducted. Heavy metal concentrations in topsoil of the MVs showed copper ranging from 0.02 mgkg-1 in the topsoil at Idi-Aba MV to 126.89 mgkg-1 for topsoil at Kotopo MV. The level of copper detected in Kotopo MV soil is however higher than the allowable limits for Sweden, Netherlands and Germany. Mean concentration of zinc in soils of the MVs were 2.89, 0.91 and 86.23 mgkg-1 respectively for Fajol, Idi-Aba and Kotopo MV respectively. Metal enrichment factor indicated that the contamination degree ranged from unpolluted to moderately polluted areas. Copper is the most enriched metal in the soil of the MVs especially at Kotopo MV. Relative abundance of the metals in the topsoil (0-15cm) in Fajol MV follow the order Zn > Ni> Cr >Pb >Cu > Co> Cd.  For the Idi-Aba MV, relative abundance is in the order Ni > Zn > Cr > Pb> Cu > Co and Cd, and that of Kotopo MV was Cu >Zn> Pb > Ni > Cr, Co and Cd. Mean heavy metal in the water samples were lower than those found in the soils of the MVs. Stream water near the Kotopo MV had the highest concentration of most metals. Zinc had the highest mean concentration of 2.02 mgL-1 while copper was 1.09 mgL-1.  There is an urgent need to put measures in place to monitor the activities in these MVs in order to safeguard peoples’ health environmental integrity.
Biodegradation Kinetics of Phenol, 2,4,6-Trichlorophenol and Pentachlorophenol with ligninolytic enzymes from Dichomitus Squalens
Authors: Zupan Nastja , Babic Janja , Pavko Aleksander
Published: May 2018

Biodegradation of phenol, 2,4,6-trichlorophenol and pentachlorophenol was investigated using Dichomitus squalens cultivation media filtrates with initial laccase and manganese peroxidase activities of 1000 U L-1 and 300 U L-1, respectively. Decomposition of all three biocides was studied at T = 28 °C, pH = 4.5 and initial concentrations around 6 mg L-1 and the kinetics evaluated on the basis of the time course of the biocide concentration data. Integral analysis revealed 1st order reaction for all three pollutants and the corresponding reaction rate constants and initial concentrations for phenol, 2,4,6-TCP and PCP were estimated from linearized experimental data. The rate equations obtained allow estimation of the times necessary for a particular biocide conversion. The toxicity of reactants and products to the bacterium Vibrio fischeri before and after 48-hours degradation showed that the products were less toxic than the reactants in all three cases. The initial solutions of the three toxic substances caused 54 - 62 % inhibition of the bacterium Vibrio fischeri, while after 48 hours of degradation, 57 % reduction in the toxicity of phenol, 50 % reduction of 2,4,6-TCP and 29 % reduction of PCP was achieved.
Synthesis, Crystal Structure, and Characterization of the first Organic Cation Hexaoxoperiodate
Authors: Wacharine I. , Smirani Wajda Sta , Rzaigui M.
Published: May 2018

The title compound is an organic-inorganic hybrid material. The single crystal X-ray diffraction investigation reveals that the studied compound crystallizes in the monoclinic system, space group P21/c with the following lattice parameters:               𝑎 = 7.551 (2) Å, 𝑏 = 6.694 (3) Å, 𝑐 = 14.783 (2) Å, β = 97.61 (2)° and 𝑍 = 2. The crystal lattice is composed of a discrete (H4IO6)− anion surrounded by piperazinium cations and water molecules. Complex hydrogen bonding interactions between the different chemical spices form a three-dimensional network. Room temperature IR, 13C NMR spectroscopy, thermogravimetric analysis and optical absorption of the title compound were recorded and analyzed.
Anastatica Hierochuntica L. Used As an Alternative of Conjugated Estrogen (Premarin) in Rabbit Females
Authors: H.Ali Bushra , K.Baker Rajaa , Mohammed Taghreed Uloom , A. Hassn Huda
Published: May 2018

There are risks and benefits with all medicines and estrogen replacement is no exception. In fact, estrogen replacement is one of the most controversial topics in Endocrinology. Anastatica hierochuntica L. is a popular treatment  for the management of female reproductive disorders. The present research highlights the effect of  aqueous extract of plant against conjugated estrogen(Premarin) in rabbits. Femal oryciolagus cuniculus rabbits were divided into four groups: the 1 st group, rabbits were orally administered  (using a feeding solution )with daily dose(5 mL distilled water)for two months, the 2nd group, the rabbits were treated with conjugated estrogen (50 µg/kg b.w, body weight )for one month. The 3rd  group, the rabbits were treated with aqueose extract of plant(100mg/mL) for one month and group 4th the rabbits were treated with aqueous extract of plant(100mg/mL) for two  months  . The level of estrogen evaluated in blood. The findings of the study indicated that the administration of conjugated estrogen (50µg/kg b. w) induced a significant increase in estrogen. The result suggests that aqueous extract of Anastatica hierochuntica L. may increased leve of estrogen.
Synthesis and Characterization of Hydroxyapatite Ceramics Organofunctionalized with ATP (Adenosine Triphosphate)
Authors: HAMMAMI Khaled , ELLOUMI Jihene , AIFA Sami , DROUET Christophe , El FEKI Hafed
Published: May 2018

Adenosine triphosphate (ATP) is the main source of energy for cells. In this article we investigated, with a possible future finality in bone tissue engineering, the original association of ATP molecules and hydroxyapatite (HAp) fine powders. We have in particular inspected, in a preliminary way, the effects of the presence of ATP molecules on the physico-chemistry of apatite compounds obtained via co-precipitation. Hybrids were produced by association of increasing amounts of adenosine 5’-triphosphate (ATP) disodium hydrate salt with hydroxyapatite, leading to so-called “organoapatites”. The structure and composition of the polycrystalline hybrid compounds obtained were studied by XRD, FTIR, SEM and magic angle spinning (MAS) NMR techniques. The presence of ATP was found to alter the apatite crystallization process, leading to a departure from stoichiometry. MAS-NMR data attest to the presence of strong interactions between functional groups of ATP and apatite particles unveiling the obtainment of class II hybrids with potential future applications in cell-loaded bone scaffolds.
Voltammetric investigation on interaction of Hyaluronic Acid with crystal violet and its analytical application
Authors: Zhang WeiLi , Niu XueLiang , Zhang Ping Ping , Sun Wei
Published: May 2018

In this paper, the interaction of hyaluronic acid (HA) with crystal violet (CV) was investigated carefully by linear sweep voltammetry on the dropping mercury working electrode (DME). In pH 5.0 Britton-Robinson (B-R) buffer solution, CV has a sensitive, well-defined second order derivative linear sweep voltammetric reductive wave at –0.85 V (vs. SCE). After adding a certain amount of HA into CV solution, the reductive peak current decreased without any shift of reductive peak potential. Based on the difference in the reductive peak current, a new voltammetric method for the detection of HA was established. The reaction conditions and the electrochemical determination were studied and optimized. Under the optimized conditions, the decrease of peak current showed a good linear relationship with the HA concentration in the range from 10.0 to 40.0 mg/L. The linear regression equation was got as ∆ip″(nA)= 84.07 C–527.86  (mg/L) (n=8, γ=0.997) and the detection limit was calculated as 2.65 mg/L (3σ). This new established method was further used to HA determination in the synthetic samples with satisfactory results and good recovery. The stoichiometry of CV-HA complex was calculated and the binding mechanism was also discussed by the electrochemical data.
Electrochemical Determination of Trichloroacetic Acid using Platinum Electrode
Authors: Khodari M. , Abd-Elrady A. A. , Rabie E.M. , Assaf H.F.
Published: May 2018

The electrochemical reduction of Trichloroacetic acid (TCA) on a platinum electrode by cyclic and linear sweep voltammetry was described. The measurements were investigated under optimized conditions. The supporting electrolyte was 0.01 M sodiumnitrate solution (pH 6.0), scan rate 50mV\s and the reached detection and quantification limits was 4x10-6 mol l-1. The obtained result indicated linear increasing of the current with concentration of TCAA between lower and upper detection limits and excellent sensitivity towards TCAA reduction, which demonstrates the analytical utility of platinum electrode. Meanwhile, interference from other ions and substances were examined. The experimental results indicate that the method for the determination of TCAA samples is successful comparing with other methods or techniques.
TOTAL PHENOLIC CONTENTS, ANTIOXIDANT, ANTICANCER AND ANTIDIABETIC PROPERTIES OF Myrmecodia tuberosa (RUBIACEAE)
Authors: Rasemi Saidi , Khong Dr Heng Yen , Ahmad Rohaya , Hasan Mizaton Hazizul
Published: May 2018

Myrmecodia tuberosa, locally known as “Sarang Semut”, belongs to the Rubiaceae family. The aim of the study is to investigate the total phenolic contents and bioactivity of the crude extract of M. tuberosa. The tuber, bark and leaves of the plant were cut, washed and air-dried. The plant was extracted with ethyl acetate and ethanol to yield EtOAc and EtOH crudes. The crudes were then tested for antioxidant 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl (DPPH) assay, α-glucosidase assay for anti-diabetic activity and [3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium] MTT Assay for cytotoxicity test. The results showed that bark ethanolic extract demonstrated the highest DPPH scavenging of 95.16% while other crudes were ranging from 92.77% to 94.55% scavenging of DPPH compared to ascorbic acid. The tuber ethyl acetate extract demonstrated the highest inhibition of α -glucosidase enzyme with 72.58% while other crudes were ranging from 63.27% to 72.46% inhibition. In addition, the ethanolic tuber extract exhibited the strongest cytotoxicity against Human colorectal Cancer (HT-29) and Cervical Cancer (HeLa) cell lines with the IC50 value of 16 µg/mL and 14 µg/mL respectively. Meanwhile, the ethanolic bark extract exhibited the strongest cytotoxicity against Human Breast Cancer (MCF-7) with IC50 value of 6.0µg/mL. Furthurmore, the tuber extracts contained the highest phenolic content with 1087mg GAE/ g extract compared to the leaves and barks of the plants. The findings suggest that the whole part of M. tuberosa is a potential natural source for anti-oxidative, anti-diabetic and anti-cancer agent.
The effect of pH and the process of direct or inverse synthesis of silicon-Substituted hydroxyapatite prepared by hydrolysis in aqueous medium
Authors: Dhouib Bochra , Jouini Noureddine , Karmous Farah , Brinza Ovidiu , Schoenstein Fréderic , El Feki Hafed
Published: May 2018

Nanosized hydroxyapatite with silicon substitution Ca10(PO4)6−x(SiO4)x(OH)2−x□x (0 ≤ x ≤ 2)  of same silicon concentrations, variation of pH and the method of inverse and direct synthesis were successfully prepared first time by the theoretical maximum  of incorporation of Si into the hexagonal apatite structure   by   precipitation method aqueous. The effects        of the Si substitution on crystallite size, particle size and morphology of the powders were investigated. The crystalline phase, microstructure, morphology and particle size of hydroxyapatite and silicon substituted hydroxyapatites were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), EDX coupled with SEM and transmission electron microscopy (TEM).The samples were successfully synthesized as a single-phase apatite, and crystallization of apatite was enhanced during heating. The results obtained in this study show that the kinetics between different direct and inverse process showed different reactivities, in the presence of varying pH. Compared with the two methods, the inverse method have higher kinetic in the formation of hydroxyapatite silicate because of the difference in lattice parameters. The grain size of Si-HA samples is clearly finer than that of pure HA sample and this decreases with increasing Si content. The growth of HA nanorods with temperature can be described by “oriented attachment”. According to this theory the adjacent HA crystallites would coalesce in one particular direction on the (1 1 0) high energy planes, creating templates                        to form elongated rod-like structure.  Fourier Transform Infrared Spectroscopy analysis reveals,  the silicon incorporation to hydroxyapatite lattice occurs via substitution of silicate groups for phosphate groups. Substitution of phosphate group    by silicate in the apatite structure results in a increase in the lattice parameters in both a-axis and c-axis of the unit cell.
Ideias Malbathânicas na Educação Matemática do Brasil e da Colômbia
Authors: Espinosa Alfonso Jiménez , Lorenzato Sergio
Published: May 2018

A data 6 de maio é oficialmente o Dia Nacional da Matemática no Brasil, em homenagem a Julio Cesar de Mello e Souza, também conhecido pelo pseudônimo Malba Tahan. Ela se justifica pela valiosa contribuição desse professor à Educação Matemática – não só a brasileira, conforme mostra este artigo que resume vida e obra de um engenheiro que optou pelo magistério e pela literatura. Em 50 anos publicou cerca de 120 livros: o mais vendido no Brasil, durante décadas, foi O homem que calculava, que atualmente está publicado em 17 países. Mas foi no Didática da Matemática que Julio Cesar registrou para a história da Educação, as características do ensino da Matemática da época, ressaltando o obsoleto, o inútil e o nocivo a serem eliminados. E mais: ele propôs, com clareza e competência, como tornar compreensível e interessante o ensino de importantes conteúdos curriculares tidos como difíceis e desmotivantes. As ideias e as propostas de Malba Tahan não chegaram, à época, até as salas de aula do Brasil e da Colômbia. No entanto, nas décadas seguintes, diretrizes governamentais desses países, dentre outros, as incorporaram e, atualmente, em muitas escolas ou em livros didáticos estão presentes, por exemplo:  jogos, quebra-cabeças, paradoxos, ilusões de ótica, a descoberta, a experimentação, a formulação de problemas, a história da Matemática, a matemática útil, a beleza da matemática, como recomendava Malba Tahan. Este artigo mostra, assim, porque Julio Cesar de Mello e Souza foi um precursor da Educação Matemática, e não só no Brasil. No entanto, novos desafios se impõem à Educação Matemática no século XXI.
Júlio César de Mello e Souza e os livros de matemática comercial e financeira da década de 1930
Authors: Gouveia Neto Sérgio Candido de
Published: May 2018

Na década de 1930, Mello e Souza, Cecil Thiré e Nicanor Lemgruber, escreveram em conjunto a obra “Mathematica Commercial”. Na mesma época, outros autores, tais como Henrique Desjardins e Luiz Cavalheiro também publicaram livros de Matemática Comercial; e Matemática Comercial e Financeira. Tais obras vieram à luz sob a égide do Decreto nº 20.158 de 1931, que fazia parte da Reforma Campos e que tinha como objetivo a organização do ensino comercial. Nesse sentido, questionam-se: existem diferenças entre a obra de Mello e Souza, Thiré e Lemgruber e a dos demais autores? As orientações da Reforma Campos para o ensino comercial foram incorporadas nestes livros? Portanto, o texto aqui delineado tem como objetivo construir uma interpretação histórica, traçando um paralelo entre o livro de Mello e Souza, Thiré e Lemgruber e as outras obras dos outros autores aqui citados, bem como, a partir desses livros, analisar se as orientações da Reforma Campos, de 1931, foram ou não incorporadas pelos autores em suas obras. Como fontes utilizamos o decreto do Decreto nº 20.158 de 1931, e principalmente as primeiras edições dos livros: “Mathematica Commercial” (1932); “Cálculos Comerciais e Financeiros” (1936); e “Matemática Comercial e Financeira” (1939). O referencial teórico-metodológico foi o de Choppin (2004), que faz um estado da arte sobre a história dos livros e das edições didáticas. Os resultados indicam que o livro de Mello e Souza, Thiré e Lemgruber, tem algumas diferenças em relação as demais obras, como por exemplo, inovaram ao trazer pequenos textos no fim dos capítulos sobre a cultura mercantil, muitos de cunho histórico. Em relação a legislação Mello, Thiré e Lemgruber, assim como o de Luiz Carvalheiro tinham uma estrutura semelhante àquela definida pela lei, sendo exceção o livro de Henrique Desjardins. Como consideração final, destaca-se que os livros desses autores, assim como o de Luiz Cavalheiro cumpriam a função referencial, conforme colocado por Choppin (2004), ou seja, o livro didático é uma fiel tradução do programa estabelecido na legislação.
História da Matemática: razões para seu ensino na revista Lilaváti (1957), de Malba Tahan
Authors: De Oliveira Cristiane Coppe
Published: May 2018

O presente trabalho é fruto de um projeto de pesquisa em andamento, acerca de fontes primárias, desenvolvido pelo Núcleo de Pesquisas e Estudos em Educação Matemática da Universidade Federal de Uberlândia (NUPEm/UFU). De natureza qualitativa, tem como objetivo apresentar a Revista Lilaváti (1957), dirigida por Malba Tahan na cidade do Rio de Janeiro, e alguns aspectos, presentes na revista, que evidenciam as razões para ensinar história da matemática. Inicialmente, buscaram-se dados em trabalhos científicos que procuram estabelecer relações entre história e Educação Matemática. Outra etapa envolveu a aproximação – por meio de sua estrutura, de seus colaboradores e de temas de História da Matemática ali apresentados por Malba Tahan e por outros autores – com os elementos que desencadearam a criação e a constituição de Lilaváti. A partir do levantamento desses temas, reuniram-se algumas razões para ensinar história da Matemática, tomando como referencial Struik. Constatou-se que a maioria dos tópicos apresentados na Revista Lilaváti possui um enfoque em curiosidades apresenta particularidades da matemática e envolve mais de uma razão. Acredita-se que pesquisas em fontes primárias, especificamente revistas destinadas a alunos e professores, podem contribuir para pensar a história da Matemática como um recurso didático para auxiliar na compreensão de ideias matemáticas e em outras dimensões que envolvem o contexto da Educação Matemática brasileira.
A Didática de Malba Tahan: alunos como solucionadores criativos de problemas
Authors: Almeida Isaura Aparecida Torse de
Published: May 2018

Apresentamos neste trabalho o relato de uma experiência vivenciada com alunos do 8º ano, numa escola pública municipal da cidade de São Paulo/SP, cujo enfoque foi desenvolver a criatividade e o protagonismo através da resolução de problemas, apoiados na didática de Malba Tahan. No desenvolvimento das atividades refletimos sobre o papel da metodologia utilizada pelo autor bem como sua contribuição para a Educação Matemática, considerando o processo ensino aprendizagem de maneira mais integradora e significativa.
Os quadriláteros notáveis no 8º ano do Ensino Fundamental: um estudo sob a ótica da Teoria Antropológica do Didático
Authors: Costa André Pereira da , Santos Marilene Rosa dos
Published: May 2018

Este estudo teve por objetivo investigar a abordagem do conceito de quadriláteros notáveis presente em um livro didático do 8º ano do ensino fundamental, em especial, os tipos de tarefas explorados. Desse modo, usamos como âncora teórica a Teoria Antropológica do Didático – TAD, desenvolvida por Chevallard (1999), e a definição de quadriláteros proposta por Lima e Carvalho (2010). Com uma abordagem qualitativa, esta pesquisa apresenta uma análise documental, na qual, foi escolhido um livro didático de Matemática do 8º ano do ensino fundamental, aprovado pelo Programa Nacional do Livro Didático – PNLD 2017, especificamente, o livro dedicado ao professor. Então, realizamos a identificação dos tipos de tarefas presentes no capítulo do livro voltado para o mencionado objeto geométrico. Os dados construídos sinalizam que o tipo de tarefa mais evidente no livro analisado é Determinar a medida de uma grandeza geométrica associada a um quadrilátero notável, com uma frequência aproximada de 38,53% do geral de tarefas investigadas. O estudo desenvolvido sinaliza a tendência em abordar os quadriláteros notáveis por meio de tarefas que explorem a produção dessas figuras geométricas, fazendo uso, por exemplo, de seus atributos e de suas propriedades. Portanto, destacamos a necessidade de se abordarem os quadriláteros notáveis por meio de tarefas que explorem a produção dessas figuras geométricas, fazendo uso, por exemplo, de seus atributos e de suas propriedades. Tal demanda poderá estimular o progresso da aprendizagem geométrica dos estudantes do ensino fundamental.
Komunikasi Politik Elit NU dan Muhammadiyah dalam Pilkada Kediri
Authors: Edwinarta Caesar Demas , Dwijayanti Rizkya
Published: May 2018

This research seeks to analyze the political communication run by elite Nahdlatul Ulama (NU) and Muhammadiyah in the election of Mayor and Vice Mayor (Pilwali) Kediri Year 2013 ago. Organizationally, neither NU nor Muhammadiyah declared its involvement in the Kediri City Pilwali process. But personally, at the elite level, there is a role performed by each of these institutions. This study was studied using descriptive qualitative method with purposive selection technique of informant accompanied by triangulation of source as technique of examination of data validity. The political communication carried out by both NU and Muhammadiyah is a political communication based on the Pareto stratification which divides the community groups that have the advantage to govern and who have no advantages whatsoever. NU has an elite stratification consisting of elites who have the advantage to govern and represent by kyai and elite who have no superiority to govern by being described as NU daily administrators on the management of Tanfidziyah. While the majority of Muhammadiyah elites have the capability as an elite that has an advantage with consideration of the influence resulting from political communication conducted by the elites. The results of this study indicate that political communication that occurs is a representation of an elite circulation process that results in an elite shift as a form of elite substitute shrewdness in shifting the previous strong elite's position through shifting values by placing influential groups in political contestation as a group capable of transferring power of the previous group. Keywords: Nahdlatul Ulama, Muhammadiyah, Elit.
PENGEMBANGAN ATLIT DUDA (ATLAS INTERAKTIF HINDU BUDHA) DI NUSANTARA UNTUK MENINGKATKAN JIWA NASIONALISME PADA SISWA SMP KOTA MADIUN
Authors: Habsari Novi Triana
Published: May 2018

Penelitian ini bertujuan untuk meningkatkan jiwa nasionalisme pada siswa SMP Negeri 6 Kota Madiun melalui media Atlit Duda di Nusantara. Model pengembangan yang digunakan dalam penelitian ini adalah model pengembangan Research and Development (R&D). Prosedur pengembangan menggunakan tahapan pengembangan produk, validasi, uji coba produk hingga
uji coba pada kelas yang lebih besar.Subyek penelitian ini adalah siswa kelas VII B yang berjumlah 25 siswa. Instrumen pengumpulan data yang digunakan adalah lembar validasi dan lembar observasi siswa.Hasil penelitian menunjukkan bahwa, pertama pada SMPN 6 Kota Madiun, proses belajar mengajar ips-sejarah belum maksimal. guru masih mengacu pada metode konvensional dan penggunaan media pembelajaran IPS belum maksimal. kedua hasil uji terbatas dan uji skala luas mendapatkan hasil yang cukup signifikan sebelum dan sesudah diterapkan media atlit duda (atlas interaktif hindu budha) di
nusantara. terbukti dengan perolehan nilai rata-rata kelas 75,28 meningkat menjadi 82,73 dengan nilai signifikannya 0,05. apabila perhitungan <0,05 maka ditolak dan diterima, sehingga ada peningkatan yang signifikan antara nilai ips-sejarah sebelum dan setelah diterapkannya media atlit duda (Atlas Interaktif Hindu Budha) di nusantara. jiwa nasionalisme pada siswa setelah diterapkannya media atlit duda (atlas interaktif hindu budha) di Nusantara adalah 3,84 dengan kriteria sangat baik. dengan demikian, maka pengembangan atlit duda (Atlas Interaktif Hindu Budha) di Nusantara dapat meningkatkan jiwa nasionalisme pada siswa SMP Kota Madiun. 
PENINGKATAN AKTIVITAS DAN PEMAHAMAN KOLONIALISME EROPA DI INDONESIA MELALUI MODEL MAKE A MATCH PICTURE PADA SISWA KELAS VII SMPN NGEBEL PONOROGO
Authors: Susilowati Rias
Published: May 2018

Penelitian ini bertujuan untuk meningkatkan aktivitas dan pemahaman siswa kelas VII SMPN Ngebel Ponorogo terhadap pemahaman kolonialisme Eropa di Indonesia melalui penerapam model make a match picture. Pendekatan penelitian menggunakan penelitian kelas sebanyak dua siklus dengan subyek penelitian siswa kelas VII B. Pengambilan datanya dengan tes, observasi, dan wawancara, serta dianalisis kualitatif interaktif. Hasil dari ulangan harian khusus kelas ini 73% belum bisa mencapai ketuntasan. Mengingat pentingnya pemahaman yang benar terhadap materi IPS ini, kami menemukan langkah yang sesuai antara materi dengan model pembelajarannya, yaitu Make A Match Picture. Ternyata ada peningkatan, baik aktifitas maupun pemahaman. Aktifitas pada siklus I 88 % (target 76%), siklus II menjadi 100%, sedangkan pemahaman walau baru 61% dan belum mencapai target yaitu 76%, tapi pada siklus II meningkat menjadi menjadi 84% (targetnya 80).
KEMAMPUAN GURU DALAM ENGEMBANGKAN PERANGKAT PEMBELAJARAN IPS BERBASIS KARAKTER (STUDI PADA GURU SMP NEGERI 3 GEGER MADIUN)
Authors: Suharto Suharto
Published: May 2018

         Penelitian ini bertujuan untuk menganalisis dan mendeskripsikan kemampuan guru SMPN 3 Geger Kabupaten Madiun dalam  mengembangkan perangkat pembelajaran IPS berbasis karakter. Penelitian ini menggunakan pendekatan kualitatif. Subjeknya  guru IPS SMPN 3 Geger Madiun yang ditentukan dengan teknik purposive sampling. Data bersumber dari data primer dan data sekunder. Teknik pengambilan datanya dengan observasi, wawancara dan dokumen. Instrumen utama penelitian adalah peneliti sendiri. Data yang diperoleh dianalisis dengan teknik deskriptif kualitatif. Hasil penelitian menunjukkan bahwa kemampuan guru IPS: (1) kurang terampil dalam merancang perencanaan pembelajaran IPS yang bermuatan karakter dan menganggap pendidikan karakter tidak harus melalui proses belajar mengajar tetapi melalui program pembiasaan, (2) kurang terampil memilih, memanfaatkan dan mengembangkan metode, media, sumber belajar yang mendukung tujuan pembelajaran berbasis karakter, (3) guru kurang terampil dan belum memahami pengembangan dan penyusunan assesment berbasis karakter. Hal tersebut disebabkan oleh berbagai faktor, yaitu (1) belum dijabarkan nilai-nilai pada indikator dan disesuaikan dengan visi sekolah secara komprehensif, (2) pemahaman guru tentang nilai-nilai karakter  masih belum tuntas.
KEMAMPUAN GURU DALAM MENGEMBANGKANPERANGKAT PEMBELAJARAN IPS BERBASIS KARAKTER-PERILAKU SOSIAL SISWA KELAS VIII MTsN NGRAMBE
Authors: Ratnaningtyas Susmintari Dwi
Published: May 2018

Penelitian ini bertujuan untuk mendeskripsikan dan menganalisis kemampuan guru IPSdalam mengembangkan perangkat pembelajaran berbasis karakter-perilaku sosial siswa kelas VIII MTsN Ngrambe Kabupaten Ngawi. Penelitian ini menggunakan pendekatan. Subjek penelitiannya adalah guru IPS dan siswa kelas VIII MTsN Ngrambe, dan penentuan informannya dengan teknik purposive sampling dan snowball sampling. Data yang digunakan bersumber pada primer dan skunder dan teknik pengambilannya dengan observasi, wawancara, dan dokumentasi serta dianalisis dengan metode deskriptif kualitatif Miles dan Huberman. Keabsahan data dengan triangulasi. Hasil penelitian menunjukkan bahwa guru IPS dalam mengembangkan perangkat pembelajaran berbasis karakter-perilaku sosial siswa kelas VIII MTsN Ngrambe dapat dikategorikan sudah baik. Nilai-nilai pendidikan karakter yang diterapkan, yaitu nilai ketaatan beribadah, nilai kejujuran, dan nilai tanggung jawab sudah dimasukkan dalam langkah-langkah kegiatan pembelajaran di dalam Rencana Pelaksanaan Pembelajaran. Aspek perubahan perilaku siswa yang termasuk pada kategori sangat baik adalah perilaku dalam mengembangkan interaksi positif antar siswa. Kategori baik pada aspek perilaku dalam menumbuhkan nilai moral dan spiritual, kategori cukup pada perilaku sosial siswa untuk mengembangkan potensi diri secara utuh. Siswa memberikan tanggapan positif dan menerima dengan baik integrasi nilai pendidikan karakter pada proses pembelajaran.
STUDY ON THE DESIGN OF TRAINING SPACE BASED ON PRACTICAL TEACHING CONSTRUCTION IN APPLICATION-ORIENTED UNIVERSITIES
Authors: Aslam Fawad
Published: May 2018

As pragmatic personnel are popular in modern society, it has become an important topic for application-oriented universities to study the design of Training Space based on practical teaching construction. This essay conducts analysis as well as summary in both theory and practice. The essay introduces concept, classification, function and feature of Training Space, as well as analyzes designing process and application of Training Space in application-oriented universities. Training Space design is important for application-oriented universities to innovate teaching patterns by strengthening practicability in practices so as to improve the standard of practical construction.
Allelopathy in native species of brazilian Savannah / Alelopatia em espécies nativas do Cerrado
Authors: Marchi Edilene Carvalho Santos , Marchi Giuliano , Sousa-Silva José Carlos , Ikeda Fernanda Satie , Fagg Christopher William
Published: May 2018

Nesta revisão, estudos alelopáticos de 70 espécies nativas do Cerrado, distribuídas em 34 famílias e estudadas de 1992 até 2008 foram compiladas em uma lista. O Bioma Cerrado compreende várias paisagens distintas constituídas por diferentes fitofisionomias e é uma das biodiversidades mais ricas no mundo. Das 12.000 espécies lenhosas nativas do Cerrado, somente em uma pequena parte foram estudadas. Poucos aleloquímicos em folhas, flores, parte aérea e partes subterrâneas de espécies de plantas foram identificadas em dados restritos. Compostos isolados de poucas plantas foram mostrados em detalhes. A síntese desses compostos não foi utilizada para uso em controle de plantas daninhas e outros organismos. Futuros trabalhos poderiam ser direcionados para plantas estudadas e ainda não estudadas; a identificação de novos compostos e seu metabolismo; síntese e modo de ação daqueles compostos; efeitos na agricultura e no estabelecimento de plantas no Cerrado.

 

ABSTRACT

In this review, allelopathic studies of 70 species native from Cerrado, distributed in 34 families and studied from 1992 until late 2008, were compiled in a list. The Cerrado Biome comprises several distinct landscape areas constituted by different phytophysiognomies, and is the most biodiverse savanna in the world. From the 12.000 species native to Cerrado, only a small amount of species have been studied. Few allelochemicals in leaves, flowers, shoots, and subterranean parts of plant species were identified in the restricted data. Isolated compounds from a few plants were shown in detail. The synthesis of those compounds was not identified for use in comprehensive control of plants and other organisms. Future studies should be directed to unknown and better known plants; identification of new compounds and their metabolism; synthesis and mode of action of those new compounds; agriculture effects and Cerrado plants establishment.
¿Birds of passage? La integración social de la población refugiada en España
Authors: Iglesias-Martínez Juan , Estrada Cecilia
Published: May 2018

The present article analyzes the conditions of social integration of the refugee population in Spain during the period 2012-2016, based on qualitative research data. For that purpose, the authors analyze the current situation of the issue in Europe and particularly in Spain, collects the main data on the sociodemographic profile of the refugees, and finally, exposes the results obtained in the research. During their first five years of incorporation, refugees in Spain are emulating the same vulnerable conditions of integration as in other European countries, mainly marked by job insecurity, housing poverty and economic uncertainty. The factors that explain this situation are as much of structural origin —institutional or economic— as social and personal —language or weakness of social networks—. The Spanish system of reception and social integration is unable to reverse this trend, so is in much need of proposals for reform and revision.
Theotônio dos Santos (1936-2018) and the reconstruction of political economy of development
Authors: Domínguez-Martín Rafael
Published: May 2018

This essay analyzes economic thought trajectory of the great Latin American intellectual Theotônio dos Santos in his vital context and the history of ideas, as well as his main contributions to the critical studies of development.
DESAIN DAN SIMULASI TUNGKU BAKAR UNTUK PENGOLAHAN PASIR BESI MENJADI SPONGE IRON DENGAN TEKNOLOGI TUNNEL KILN = DESIGN AND SIMULATION OF FURNACE FOR FERRUGINOUS SAND TO BE SPONGE IRON PROCESS BY USING TUNNEL KILN TECHNOLOGY
Authors: Tambunan Barman , Supriyadi Cuk
Published: May 2018

Abstract

Ferruginous sand is one of the natural resources that are scattered acrossÂ Indonesia. Ferruginous sand is generally in the form of magnetite (Fe3O4)Â and hematite (Fe2O3) with a high content of impurities such as silica,Â alumina, and titanium oxide.To increase the value of Ferruginous sand, thisÂ study shows the stages of the process include mechanical beneficiationÂ process and reduction process by using Tunnel Kiln technology.To getÂ optimal production, carried out the Process design and simulation ofÂ combustion furnaces both structural and fluid flow of heat (CFD).This studyÂ used a sample of iron sand originating from the southern beach area of theÂ island of Java, that is from east Java (Lumajang),Central Java (Yogyakarta)Â and the west Java (Cipatujah).To determine the performance result of designÂ and simulation,have been done the actual reduction process by using theÂ combustion furnace according to the design. Performance results ofÂ reduction process to produce a finish Sponge Iron with increased Fe contentÂ of 51.72% to 78.79% with 36.68% metallization degree (Jogja samples) andÂ from 52.93% to 57.90% with 24.43% metallization degree (sampleÂ Lumajang). This results has prove that the furnace by using the Tunnel KilnÂ technology could increase the value of the ferruginous sand.

Â 

Abstrak

Pasir besi merupakan salah satu potensi sumber daya alam yangÂ tersebar di wilayah Indonesia. Pasir besi umumnya berupa magnetiteÂ (Fe3O4) dan hematite (Fe2O3) dengan kandungan pengotor berupa silica,Â alumina, dan titanium oksida. Untuk menaikkan nilai pasir besi, penelitian iniÂ mengajukan tahapan proses antara lain proses benefisiasi dan prosesÂ reduksi menggunakan tungku bakar dengan teknologi Tunnel Kiln. UntukÂ mendapatkan proses reduksi yang optimal, dilakukan proses desain danÂ simulasi tungku bakar baik secara struktur maupun aliran fluida panasÂ (Computional Fluid Dynamics/CFD). Penelitian ini menggunakan sampelÂ pasir besi yang berasal dari kawasan pantai selatan pulau Jawa, yaitu JawaÂ bagian timur (lumajang), Jawa bagian tengah (Jogja) dan Jawa bagian BaratÂ (Cipatujah). Untuk mengetahui performa hasil desain dan simulasi, dilakukanÂ proses reduksi dengan menggunakan tungku bakar sesuai dengan desain.Â Performa hasil proses reduksi menghasilkan produk akhir Sponge IronÂ dengan kadar Fe 51.72% menjadi 78.79% dengan derajat metalisasi 36.68%Â (sampel Jogja) dan dari 52.93% menjadi 57.90% dengan derajat metalisasiÂ 24.43% (sampel Lumajang). Dari hasil tersebut membuktikan bahwa tungkuÂ bakar dengan teknologi Tunnel Kiln ini dapat meningkatkan nilai tambahÂ Pasir besi.
KEBERADAAN SARANA DAN PRASARANA TRANSPORTASI DALAM INDUSTRI PARIWISATA DI KEPULAUAN ANAMBAS
Authors: Karana Sjafril , Cahyo Andi
Published: May 2018

ARTICLES
Analisis Kemungkinan Kebangrutan Berbasis Pendekatan Model Z-Score Altman dan Metode EVA pada PT X di Provinsi Kepulauan Bangka Belitung
Authors: Catherin Melia , Purwanto Budi
Published: May 2018

PT X has a regional office in Bangka Belitung Island Province which has been decrease in sales, increase in credit and inventory which may lead to insolvency. The purposes of this research was (1) to analyze the financial performance of PT X to learn factors affecting insolvency possibilities; (2) to analyze company condition that indicate insolvency possibilities; (3) to analyze the added values which could be given by the company in an insolvency possibility; (4) to analyze the relation of added values that had been given by the company with insolvent condition possibility. The primary data were gathered by interview. Secondary data consisted of financial reports, journal literatures, thesis, and related books. The data were processed through descriptive analysis, financial ratio, Z-score Altman model, and EVA method. Based on the descriptive analysis result, PT X was suffering a possibility of bankruptcy that may affect firm value which was also decrease. The financial ratio showed that cash ratio, operational profit margin, inventory cycle, credit cycle ratio, assets cycle ratio were decrease, DER and DAR were decreasing from 2010 until 2012, but it roused significantly in 2013 and turned back to decrease significantly on 2014. The result form Z-Score model showed that the company was in gray area in 2011, the company condition went better in 2012, but it went back to gray area in 2013-2014. The EVA result showed that PT X produced positive and decreased in EVA value from 2010 until 2014.
Analisis Perbedaan Kualitas Pelayanan Listrik Pascabayar dan Listrik Prabayar terhadap Kepuasan Pelanggan Pada PT PLN (Persero) Area Ciputat
Authors: Ramadlana Rasyida leila , Najib Mukhamad
Published: May 2018

PT PLN (Persero) is a state-owned enterprise (SOE) managing all aspects of electricity in Indonesia for 44 years, works to increase the quality of life and customer satisfaction oriented. The purpose of this research is to determine the level of interest and level of satisfaction on postpaid and prepaid electricity, relationship between characteristic and customer satisfaction, and customer satisfaction difference to the quality of service. The method of analysis used is descriptive analysis, Importance Performance Analysis (IPA), Customer Satisfaction Index (CSI), Chi-squared test and T-test. The results showed that the attributes contained in quadrant A of Importance of Performance Matrix need to be improved so that customer satisfaction increase, the CSI value of postpaid and prepaid electricity have been satisfying customers. The result of chi-square test suggests that there is correlation between sex and customer satisfaction of prepaid electricity customers and the T-test result suggests that prepaid electricity customer satisfaction is higher than postpaid electricity customer satisfaction.
Analisis Beban Kerja Unit Kerja Markas dan Satuan Pengawas Internal Palang Merah Indonesia DKI Jakarta
Authors: Fauzia Rizki , Kartika Lindawati
Published: May 2018

Indonesian Red Cross (PMI) province of DKI Jakarta, Indonesia as the social organization is required to always be ready to meet all the needs of society. However, there are some problems in its implementation, such as fundraising target that has not been achieved, there is no Standard Operating Procedure (SOP), and there are some jobs that have not been implemented. Hence, workload analysis is required to determine the composition of the right amount of employees. The purposes of this study are: 1) Describing the business process on PMI’s Internal Headquarter Unit and Observer Squad; 2) Composing more accurately job descriptions; 3) Analyzing more efficiently and more effectively the workloads on the Internal Headquarter Unit and Observer Squad; and 4) Giving recommendation about the ideal employee numbers on the Internal Headquarter Unit and Observer Squad. The processing data method which used in this study was Full Time Equivalent (FTE). The result of workload analysis shows that new recruitment is not necessary, but downsizing in storage and pantry staff in general affairs should be conducted.
Pengaruh Celebrity Endorser terhadap Brand Image pada Kosmetik Wardah di Bogor
Authors: Marselina Dian , Siregar Edward H
Published: May 2018

PT Paragon Technology and Innovation merupakan salah satu perusahaan lokal yang bergerak di bidang produksi kosmetik yang menggunakan celebrity endorser sebagai pendukung dalam kegiatan promosinya. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh celebrity endorser terhadap brand image, atribut celebrity endorser yang meliputi trustworthiness, expertise, attractiveness, respect dan similarity dari endorser Wardah yang bernama Inneke Koesherawati (IK). Penelitian ini menggunakan teknik purposive sampling di wilayah Bogor Tengah dan Bogor Barat. Penelitian diuji dengan menggunakan metode analisis regresi linier berganda dilengkapi dengan uji F dan uji T. Hasil analisis menunjukkan bahwa variabel independen yaitu trustworthiness, expertise, attractiveness, respect dan similarity secara bersama-sama berpengaruh signifikan terhadap brand image Wardah. Secara parsial hanya tiga variabel yaitu trustworthiness, attractiveness and similarity yang berpengaruh signifikan terhadap brand image Wardah. Variabel attractiveness memiliki pengaruh yang dominan terhadap brand image Wardah.
Kepuasan dan Loyalitas Siswa dan Orang Tua Terhadap Penggunaan Layanan Online Berdasarkan Kualitas Pelayanan dan Kualitas Tampilan Laman (Web) di SMK Negeri 1 Kota Bogor
Authors: Pramono Setio , Sarma Ma'mun , Munandar Jono M
Published: May 2018

Proses pembelajaran pada pendidikan menengah dan kejuruan di SMK Negeri 1 Kota Bogor telah memanfaatkan keberadaan website sekolah yang bertujuan untuk meningkatkan efisiensi dan efektivitas pembelajaran. Tujuan penelitian ini adalah menganalisis dan menjelaskan pengaruh kualitas pelayanan, kualitas produk (tampilan laman) terhadap kepuasan dan loyalitas siswa dan orang tua. Sampel dalam penelitian ini sejumlah 290 orang siswa dan 290 orang tua siswa SMK Negeri 1 Kota Bogor. Teknik pengambilan sampel menggunakan non probability sampling, metode pengumpulan data dengan kuesioner, dan analisis data menggunakan software SmartPLS 3.2.0. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan antara kualitas pelayanan terhadap kepuasan dan loyalitas siswa, kualitas produk terhadap kepuasan dan loyalitas siswa, serta kualitas pelayanan terhadap kepuasan orang tua. Sedangkan pengaruh kualitas pelayanan terhadap loyalitas orang tua tidak signifikan.
Pengaruh Kompetensi dan Kompensasi terhadap Kepuasan Kerja dan Work Engagement Karyawan UKM Susu Kambing Kabupaten Bogor
Authors: Pranazhira GP Ranisa , Sukmawati Anggraini
Published: May 2018

Persaingan dalam penyediaan sumber daya manusia yang berkualitas semakin ketat, maka asupan protein hewani menjadi sangat penting. Salah satu asupan protein hewani adalah susu. Terdapat 2 jenis susu yaitu susu sapi dan susu kambing. Kabupaten Bogor merupakan daerah yag memiliki banyak usaha ternak kambing dan susu kambing. Dalam pencapaian tujuan dan kesuksesan UKM harus diperhatikan dari berbagai aspek, salah satunya adalah sumber daya manusia(SDM). Pengambilan data penelitian ini menggunakan kuesioner yang telah melalui uji validitas dan reliabilitas. Metode pengambilan sampel dalam penelitian ini adalah non probability sampling dengan teknik sampel jenuh atau sensus. Metode analisis data dalam penelitian ini menggunakan Microsoft Excel, SPPS dan SEM PLS. Hasil penelitian menunjukkan bahwa kepuasan kerja dan work engagement dipengaruhi oleh kompetensi dan kompensasi. Sedangkan work engagement tidak dipengaruhi oleh kepuasan kerja.
Pengaruh Iklan Televisi terhadap Pengambilan Keputusan Pembelian Konsumen Es Krim Magnum
Authors: Azmi Fikhi Nayatul , Sarma Ma'mun
Published: May 2018

According to Nielsen Advertising Information Services said the 2015 total advertising expenditure increased by 4%. This increase was also influenced by existing companies in Indonesia including PT Unilever Indonesia. Tbk with its brand advertising products Wall's Magnum Ice Cream. This study aims to identify consumer ratings of advertising done by Ice cream Magnum, analyzing the effectiveness of ads Magnum Ice Cream is able to communicate the message and analyzing consumer purchase decisions over the ads that do Magnum Ice Cream. Data processing was performed using Statistical Package For Social Science (SPSS) 19 and Minitab 14. The analysis tool used is the EPIC model and Consumer Decision Model (CDM). Based on the analysis, the measurement response television advertising and communication impact that occurs, television commercials advertising the Magnum Ice Cream edition Taste the Classic included in the category of advertising is quite effective and have an impact until the real purchase.
Kajian Kondisi Fisik Terminal Leuwipanjang Berdasarkan Persepsi Penumpang
Authors: Angestiwi Tiafahmi
Published: May 2018

Leuwipanjang terminal is a passenger terminal serving AKDP and AKAP. UPTD Terminal is required to provide convenient facilities for passengers during activities within the Terminal. Physically, terminal facilities cover two important aspects of maintenance and availability of terminal facilities. Therefore, to know the physical performance of the terminal, conducted a review of the results of maintenance and service. This study aims to determine the perception of passengers on the maintenance results by UPTD Terminal and Terminal physical facilities services. The research method used is descriptive research method. While the data collection techniques used include observation and questionnaires. Analysis of data processing using descriptive analysis and theoretical comparison analysis. From the result of research, it can be concluded that the study of maintenance activity is considered not good. While the study of terminal services is considered quite good. In this regard, it is necessary to improve the quality of cleanliness and the quality of the room, as well as to review the terminal services by creating safety, security, reliability and regularity, convenience, convenience or affordability, and equity.Key Word: Passenger terminal, physical condition of the building, maintenance activities, terminal servicesTerminal Leuwipanjang merupakan terminal penumpang yang melayani AKDP dan AKAP. UPTD Terminal dituntut untuk menyediakan sarana yang nyaman untuk penumpang selama berkegiatan di dalam Terminal. Secara fisik, sarana terminal mencakup dua aspek penting yakni hasil pemeliharaan dan ketersediaan fasilitas terminal. Oleh karena itu untuk mengetahui kinerja fisik terminal, dilakukan kajian terhadap hasil pemeliharaan dan pelayanan. Penelitian ini bertujuan untuk mengetahui persepsi penumpang terhadap hasil pemeliharaan oleh UPTD Terminal dan pelayanan fasilitas fisik Terminal. Metode penelitian yang digunakan yakni metode penelitian deskriptif. Sedangkan teknik pengumpulan data yang digunakan antara lain observasi dan kuesioner. Analisis pengolahan data menggunakan analisis deskriptif dan analisis perbandingan secara teoritis. Dari hasil penelitian, dapat disimpulkan bahwa kajian terhadap kegiatan pemeliharaan dinilai kurang baik. Sedangkan kajian terhadap pelayanan terminal dinilai cukup baik. Sehubungan dengan hal tersebut, perlu dilakukan peningkatan kualitas kebersihan dan mutu ruangan, serta upaya mengkaji pelayanan terminal dengan menciptakan keselamatan, keamanan, keandalan dan keteraturan, kenyamanan, kemudahan atau keterjangkauan, serta kesetaraan.Kata Kunci: Terminal penumpang, kondisi fisik bangunan gedung, kegiata pemeliharaan, pelayanan terminal