bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis, Characterization and Kinetic Study of Monomeric Complexes of Cyclohexane-1, 2- bis (Thiosemicarbazone) with Cobalt (II), Nickel (II) and Copper (II)
Authors: Ali Al-Ameen Bariz Omar
Published: April 2018

Cyclohexane-1,2-bis(thiosemicarbazone) (CHTSC) was synthesized via the condensation reaction of cyclohexane-1,2-dione and thiosemicarbazide. Series of metal complexes of the prepared lig-and, of general formula [M(CHTSC)(NO3)2], were reported. The prepared coordination complex-es were characterized and their structures elucidated using different techniques. These showed that all complexes are octahedral geometries. The kinetics of the formation of these complexes have been investigated using stopped-flow spectrophotometry. These studies revealed that the reactions are completed on the second’s timescale with 1st-order dependence (either on the con-centration of metal salt or on the concentration of CHTSC).
Synthesis and Characterization of New Silver (I) N-Heterocyclic Ccarbene Ccomplex Dderived from Imidazol-2-ylidene salt
Authors: Hasson Mohammedl Mujbe
Published: April 2018

A new N, N'-imidazolium salt 1-(2,6-diisopropylphenyl)-3- (4,6-dimorpholino -1,3,5-traizine-2-yl)-1H-imidazol-3-ium chloride) as a precursor of N - heterocyclic carbene ligand was prepared via the reaction of 1 - (2, 6 - diisopropyl phenyl - 1H - imidazole) with 1, 3, 5 - triazine derivative bearing morpholine substituent (2, 6 -dimorpholine - 6- chloro-1, 3, 5-triaziazine). Linear coordi-nated Ag (І) NHC complex was synthesised via deprotonation of the imidazolium salt and reac-tion with Ag2O in darkness at room temperature by in situ method. The complex was synthesised for using as transfer agent to prepare another transition metals complexes by transmetallation method in the future. The imidazolium salt and their silver complex have been characterized by 1 H and 13C NMR spectroscopy as well as mass spectrometry.
Development of Dispersive Liquid-Liquid Microextraction method combined with UV spectrophotometry for the Determination of Malathion Pesticide
Authors: Khayoon Wijdan Shakir
Published: April 2018

A simple and novel method was developed by combination of dispersive liquid-liquid microex-traction with UV spectrophotometry for the preconcentartion and determination of trace amount of malathion. The presented method is based on using a small volume of ethylenechloride as the extraction solvent was dissolved in ethanol as the dispersive solvent, then the binary solution was rapidly injected by a syringe into the water sample containing malathion. The important parame-ters, such the type and volume of extraction solvent and disperser solvent, the effect of extraction time and rate, the effect of salt addition and reaction conditions were studied. At the optimum conditions, the calibration graph was linear in the range of 2-100 ng mL-1 of malathion with a limit of detection of 0.8 ng L-1. In addition, the enrichment factor was 30. The developed method was successfully applied for the determination of malathion pesticide in water samples
Best Approximate of Vector Space Model by Using SVD
Authors: Hadi Raghad M.
Published: April 2018

A quick growth of internet technology makes it easy to assemble a huge volume of data as text document; e. g., journals, blogs, network pages, articles, email letters. In text mining application, increasing text space of datasets represent excessive task which makes it hard to pre-processing documents in efficient way to prepare it for text mining application like document clustering. The proposed system focuses on pre-processing document and reduction document space technique to prepare it for clustering technique. The mutual method for text mining problematic is vector space model (VSM), each term represent a features. Thus the proposed system create vector-space mod-el by using pre-processing method to reduce of trivial data from dataset. While the hug dimen-sionality of VSM is resolved by using low-rank SVD. Experiment results show that the proposed system give better document representation results about 10% from previous approach to prepare it for document clustering
Studying the Effect of Titania Additions on some properties of Porcelain
Authors: Saadon Abbas K.
Published: April 2018

The paper presents the production of porcelain for the ceramic by inexpensive natural raw materi-als, the principal raw materials of porcelain composition was selected consisting of 50% kaolin, 25% feldspar, 25% silica, the sample synthesized were characterize by X-ray diffraction (XRD) technique, than study the effect additives at different concentration form titanium oxide (
Structural, Optical, and Morphological Properties of the Cadmium Oxide Thin Film Taif S. Almaadhede
Authors: Almaadhede Taif S.
Published: April 2018

Cadmium oxide nanoparticles CdO NPS has been prepared by laser ablation in ethanol at 600 pulses and 600 mJ as laser energy. The structural, optical, and morphological properties of the cadmium oxide CdO thin film deposited on a glass substrate have been studied. X-ray diffrac-tometer (XRD 6000, Shimadzu, X-ray, diffractometer) with Cukα radiation at a wavelength of ( = 0.154056 nm) was utilized to investigate the structural properties of CdO NPs. The optical absorption of colloidal CdO NPs was measured using a spectrophotometer (Cary, 100 cans plus, UV-Vis-NIR, Split Beam Optics, Dual detectors) in the range of (200–900) nm. The morpholo-gy of the CdO NPs was investigated by using AFM (AA 3000 Scanning Probe Microscope). The thickness of the films was measured using ellipsometer (Angstrom sun Technologies Ins).
Study of Nuclear Structures for Nd 148,150,152 a Isotopes by Using IBM-1
Authors: Hummadi Sallama S.
Published: April 2018

The nuclear structures of even-even isotopes Nd (A=148,150,152) are studied by using the first

Interacting Boson Model (IBM-1). The energy levels of ground state, beta and gamma bands

,energy ratios are calculated. The results showed dynamical symmetry of these isotopes SU(3)-

SU(6), SU(5)-SU(6).
Synthesis and Identification of Heterocyclic Compounds (Oxazepine, Tetrazole) Derived from Benzidine as Photostabilizing for Poly vinyl chloride
Authors: Nief Olfat A.
Published: April 2018

This research describes preparation of new four compounds (A2-A5) having 1,3-oxazepine and Tetrazole rings. The first step involves reaction of benzidine (A1) with aromatic aldehyde (cinnamaldehyde) in ethanol as a solvent in the presence of acid as catalyst to yield the Schiff base (A2), Schiff base (A2) was condensed with maleic anhydride and phthalic anhydride in dry benzene to give a seven-membered heterocyclic ring derivative (A3, A4), In addition, we synthesis novel tetrazole derivative (A5) from the reaction of Schiff base (A2) with sodium azide in tetrahydrofuran. The structure of synthesized compounds were identified by spectral methods [FTIR, ¹H-NMR, and ¹³C-NMR] and measurement physical properties. The photo stabilization of poly (vinyl chloride) films by compounds (A1-A5) was studied. The Photostabilization activities of these compounds were determined by monitoring the carbonyl and hydroxyl indexes values with irradiation time. The changes in viscosity average molecular weight of PVC with irradiation time were studied by using tetrahydrofuran as a solvent. The influence of concentrations additives (range 0.1-0.5wt) on the rate of photodegradation and Photostabilization course was studied. Therefore, we found that was an increase Photostabilization rates with increasing concentrations of additives. In addition, Studying the effect of film thickness and the results showed that an increase in film thickness would reduce the rate of photolysis. The results indicated that Photostabilisation proportion of plastic in the presence of additives follow the trend: (PVC blank) > PVC+A1> PVC+A2 > PVC+A5> PVC+A4> PVC+A3. According to the results obtained, it proposed mechanisms depending on the structure of the additive.
O Lazer na contemporaneidade urbana: industrialização, metrópole e preconização do lazer
Authors: Teixeira Alexandre Francisco Silva
Published: April 2018

Esta pesquisa, em processo, orienta-se por fatos ocorridos sobre a institucionalização do lazer dos trabalhadores do comércio na cidade de São Paulo. Entre manifestações e estratégias relacionadas a categoria em questão encontra-se o Serviço Social do Comércio do Estado de São Paulo – SESC/SP instituição que realiza ações no campo do lazer há mais de 70 anos e compõe genericamente o sistema “S”, que representa um conjunto de empresas patronais da indústria, do comércio, dos transportes e da agricultura. Tais instituições são classificadas como “Serviços Sociais Autônomos”, ou seja, são administradas pelos poderes privados, possuem patrimônio próprio, direção particular, organizam seus serviços como uma empresa privada controlada pelo Tribunal de Contas da União.Antes de 1969 os debates sobre o lazer das classes trabalhadoras já ocorriam no Brasil, principalmente na cidade de São Paulo e mesmo que de forma gradual e desigual, começam a ganhar expressão nos discursos políticos e econômicos (SANT’ ANNA, 1994). Neste sentido o SESC, que até então, mantinha uma ação de cunho assistencialista, coloca em pauta na “IV Convenção Nacional de Técnicos” novos formatos para ação institucional embasado nas pesquisas acerca da sociologia do lazer, realizadas por Joffre Dumazedier - consultor da instituição para estudos no campo do lazer.Na década de 1980 o cotidiano das grandes cidades no Brasil está ocupado preponderantemente por uma relação laboriosa na vida de seus habitantes. Nesta mesma década o SESC/SP aumenta o número de Centros Culturais na capital paulistana que vão do centro às periferias. Atualmente, na cidade de São Paulo, os equipamentos da instituição são encontrados em todas as zonas municipais como territórios para a fruição de um lazer cultural, diversificado e voltado às diferentes faixas etárias dos empregados do comércio, serviços e suas famílias.A investigação pretende levantar transformações e permanências nas práticas do lazer institucional na cidade de São Paulo.
Pembelajaran Mendalam untuk Membentuk Karakter Siswa sebagai Pembelajar
Authors: Anwar Moh Khoerul
Published: April 2018

This article aims to develop learning methods to establish the character of students as learners. Learning method developed is deep learning to establish the character of students as learners. This research method used document study based on research results and literature review. Deep learning is a learning that leverages the power of new partnerships to engage students in practicing the learning process through discovering and mastering existing knowledge and then creating and using new knowledge in the world so that the outcomes of deep learning seek to increase students' understanding of their strengths and weaknesses, data collection regarding student profile information and trust value building among members of student learning groups. Tujuan dari penulisan ini adalah untuk mengembangkan metode pembelajaran mendalam untuk membentuk karakter siswa sebagai pembelajar. Metode penelitian yang digunakan dalam penulisan ini adalah studi dokumen berbasis hasil penelitian dan kajian literatur. Pembelajaran mendalam merupakan pembelajaran yang memanfaatkan kekuatan kemitraan baru untuk melibatkan para siswa dalam mempraktekkan proses pembelajaran melalui menemukan dan menguasai pengetahuan yang ada dan kemudian menciptakan serta menggunakan pengetahuan baru di dunia sehingga hasil dari pembelajaran mendalam berupaya pada peningkatan pemahaman siswa tentang kelebihan dan kelemahannya, pengumpulan data mengenai informasi profil siswa dan pembangunan nilai kepercayaan diantara anggota kelompok belajar siswa.
Analisis Perubahan Morfologis Pembentukan Ta’rib dan Pembelajaran
Authors: Amrulloh Muhammad Afif , Himmah Ro'fat Hizmatul
Published: April 2018

The birth of a variety of new vocabulary or term in the Arabic language that originated in a foreign language is a form of a modern linguistic phenomenon that emerged at this time. The reality shows that Arabic continues to evolve following the times that certainly gives its own difficulties for speakers of the Arab nation as well as from outside the Arab nation. However, this article will discuss the changes that occur in the morphological process of Arabization. This research used the qualitative research, including the types of research studies library or library research that takes a data source in the library. While the methods used i.e. linguistic analysis methods on morphology to produce conclusions as for the basis for the formation of Arabization. The results of this research show that there is at least some form of absorption process of morphological changes in the words used in the process of Arabization, i.e. ta'rib or morfemis/afiksasi process with the form sirkumfiks, the suffix, and prefix. Some forms of these processes contribute to the understanding of the application of some rules of Arabization to ease the Arab language learners and speakers from outside the Arab nation in learning, understanding and generate new vocabulary needed in communications globally. Penelitian ini akan membahas tentang perubahan morfologis yang terjadi dalam proses arabisasi. Penelitian ini merupakan jenis penelitian kualitatif, termasuk penelitian studi pustaka atau library research yang mengambil sumber data secara kepustakaan. Metode dalam penelitian ini yaitu metode analisis kebahasaan pada morfologi untuk menghasilkan kesimpulan untuk menjadi dasar pembentukan arabisasi. Hasil dari penelitian ini menunjukkan bahwa setidaknya ada beberapa bentuk penyerapan kata dalam proses perubahan morfologis yang digunakan dalam proses ta’rib atau arabisasi, yaitu proses  morfemis/afiksasi dengan bentuk sirkumfiks, sufiks dan prefiks. Beberapa bentuk proses tersebut memberikan kontribusi terhadap pemahaman penerapan beberapa kaidah arabisasi sehingga memudahkan para pembelajar bahasa Arab dan penutur dari luar bangsa Arab dalam mempelajari, memahami dan menghasilkan kosa kata baru yang dibutuhkan dalam komunikasi secara global yang lebih luas.
Implementasi Pembelajaran Tematik di Kelas 2 SD Negeri Demangan Yogyakarta
Authors: Syaifuddin Mohammad
Published: April 2018

This research aims to describe the planning, implementing, and assessing integrated thematic learning in SD Negeri Demangan Yogyakarta. The research is descriptive qualitative research. The subjects were the teacher, students of class 2A, and the headmaster. The data collection techniques which are used are observation, interviews, and documentation. The data were analyzed by using steps of data reduction, data display, and conclusion. Examination techniques of the validity of the data using triangulation techniques and sources. The results showed that an integrated thematic planning that teachers do already have the minimum criteria lesson planning. The implementation of integrated thematic learning has led to integrated thematic learning characteristics, including the integration of subjects using the Basic Competency (KD) subjects; each Basic Competency has its own material. On the learning activity which is implemented by the teacher, the scientific approach was implemented by the teacher with modern supporting media such as the use of LCD projector, CCTV camera, and learning aids.Penelitian ini bertujuan untuk mendeskripsikan perencanaan, pelaksanaan, dan penilaian pembelajaran tematik terpadu di SD Negeri Demangan Yogyakarta. Penelitian ini merupakan penelitian deskriptif kualitatif. Subjek penelitian ini adalah guru kelas, siswa kelas 2A, dan kepala sekolah. Teknik pengumpulan data yang digunakan adalah observasi, wawancara, dan dokumentasi. Data dianalisis menggunakan langkah-langkah reduksi data, display data, dan penarikan kesimpulan. Teknik pemeriksaan keabsahan data dengan menggunakan triangulasi teknik dan sumber. Hasil penelitian menunjukkan bahwa perencanaan tematik terpadu yang dilakukan guru sudah memuat kriteria minimal perencanaan pembelajaran. Pelaksanaan pembelajaran tematik terpadu sudah memunculkan karakteristik pembelajaran tematik terpadu, diantaranya menggunakan pemaduan mata pelajaran Kompetensi Dasar (KD) mata pelajaran, setiap KD memiliki materi tersendiri. Pada kegiatan pembelajaran yang dilaksanakan guru, pendekatan saintifik sudah dilaksanakan dengan media pendukung yang sudah modern seperti penggunaan LCD proyector, Kamera CCTV dan alat peraga pembelajaran.
Pengembangan Media Pembelajaran Berbasis Virtual Class Berbantuan Google Drive
Authors: Sohibun Sohibun , Ade Filza Yulina
Published: April 2018

University students become the main target of marketing of information technology developers. Based on the results of a survey with random sampling technique on users of wireless fidelity (wi-fi) service and internet service providers on smartphones, there are 98% of physics students use it and 80% of them actively use it to access various social media. Interactive learning media developed and accessible via smartphone but it is not widely used by lecturers and students yet. There is only 14.3% of lecturers who use e-learning. Virtual Class on e-learning is an online learning environment, in the form of web-based, portal or software. Learning in the real world, every participant both lecturers and students must meet the rules agreed upon during the college contract. One of the strategies to improve the independence of study of physics student is through learning media based on Virtual Class assisted by Google drive. Therefore, it is necessary to develop a lesson that can support conventional learning in the classroom. Mahasiswa menjadi sasaran utama marketing para pengembang teknologi informasi. Berdasarkan hasil survei yang dilakukan dengan teknik random sampling pada pengguna layanan wifi dan layanan internet provider pada gawai, terdapat 98% mahasiswa fisika menggunakannya dan 80% diantaranya aktif menggunakannya untuk mengakses berbagai media sosial. Media pembelajaran interaktif banyak dikembangkan dan dapat diakses melalui gawai. Akan tetapi, belum banyak digunakan dosen dan mahasiswa, hanya 14,3 % saja dosen yang menggunakan e-learning. Virtual Class pada e-learning merupakan lingkungan belajar online, berupa berbasis web, portal atau software. Pembelajaran di dunia nyata, setiap peserta baik dosen maupun mahasiswa harus memenuhi aturan yang disepakati saat kontrak kuliah. Salah satu strategi untuk meningkatkan kemandirian belajar mahasiswa fisika adalah melalui media pembelajaran berbasis Virtual Class berbantuan Google drive. Oleh karenanya, perlu dikembangkan pembelajaran yang dapat menunjang pembelajaran konvensional di kelas
Maximum Power Point Extraction in PV Array Under Partial Shading Conditions Using GWO-Assisted Beta Method
Authors: M. V. Rocha  , L. P. Sampaio  , S. A. O. da Silva
Published: April 2018

This paper presents a hybrid maximum power point tracking (MPPT) algorithm, which combines the grey wolf optimization (GWO) technique and Beta method for extraction of maximum power from a photovoltaic (PV) system operating under partial shading conditions. The proposed algorithm named GWO-Beta-based MPPT uses the GWO technique to achieve the global maximum power point (GMPP), while, simultaneously, the MPPT reference using Beta method is calculated according to the PV voltage and current at GMPP. After that, the MPPT algorithm is switched to operate only with the Beta method that keeps tracked on the MPP reference, guarantying the GMPP in that specific operation point. By means of computational simulation results, the performance of the proposed MPPT algorithm is evaluated taking into account the convergence speed and power oscillations to achieve the GMPP.
Modelling of Aggregated Power Output of Photovoltaic Power Generation in Consideration of Smoothing Effect of Power Output Fluctuation around Observation Point
Authors: T. Kato  , T. Murase  , M. Kurimoto  , Y. Manabe  , T. Funabashi
Published: April 2018

High penetration photovoltaic power generation system (PVS) may cause negative impacts on the frequency control of electric power system. In the impact assessment of high penetration PVS on the system frequency, the proper preparation of time-series data of aggregated PVS power output in electric power system service area is essential. However, the available data points are limited compared to the huge installation points of widely dispersed PVS in a power system service area. Therefore, this study proposes a modelling of aggregated PVS power output based on a low-pass filter (LPF) which is capable to take into account a smoothing effect of power output fluctuation around individual observation point. Then, the proposed model is applied to estimate the spatial average irradiance in the central region (called the Chubu region) in Japan by using the irradiance data observed at 61 points. The reduction in the short-cycle fluctuation is evaluated in comparison to the time-series data calculated by the simple average of 61 points data. Finally, the usefulness of proposed model is discussed in the situation that the aggregated PVS power output in electric power system service area must be curtailed due to the surplus power supply in the electric power system.
POLA PENGUSAHAAN KOMODITAS TANAMAN PANGAN PADA LAHAN KERING DITINJAU DARI PENERAPAN POLA TANAM DI KABUPATEN MOROWALI PROVINSI SULAWESI TENGAH
Authors: Noer Hasmari
Published: April 2018

AbstrakPenelitian ini dilakukan untuk mengetahui pola pengusahaan komoditas tanaman pangan pada lahan kering ditinjau dari penerapan pola tanam di Kabupaten Morowali Provinsi Sulawesi Tengah. Metode penelitian yang digunakan adalah metode survey. Lokasi penelitian adalah di Kabupaten Morowali Provinsi Sulawesi Tengah. Teknik penarikan sampel digunakan random sampling. Sampel penelitian berjumlah 120 responden yang tersebar di 3 kecamatan yakni Kecamatan Bungku Utara, Kecamatan Petasia dan Kecamatan Mori Atas Kabupaten Morowali Provinsi Sulawesi Tengah. Pengumpulan data melalui wawancara dengan menggunakan kuesioner dan observasi. Hasil dari analisis pola pengusahaan komoditas tanaman pangan pada lahan kering ditinjau dari pola tanam di Kabupaten Morowali Provinsi Sulawesi Tengah.akan diuraikan secara deskriptif. Hasil penelitian ini didapatkan pola pengusahaan komoditas tanaman pangan pada lahan kering ditinjau dari pola tanam adalah petani melakukan pola pertanaman sejenis, yaitu padi-padi-palawija, jagung-jagung-palawija, kedele-kedele-sayuran dan kacang-kacang-bera. Pola Tanam II petani melakukan pola tanam padi gogo-jagung-sayuran dan Pola Tanam III padi gogo-kedele-bera.Kata kunci : Tanaman pangan, lahan kering, pola tanamAbstractThe study was conducted to determine the pattern of utilization of food crops on dry land cropping patterns in terms of the application of Morowali district of Central Sulawesi  province. The method used is a survey method. The research location is in Central Sulawesi province Morowali. The sampling technique used random sampling. Study sample were 120 respondents spread across three districts namely North Bungku District, District and Sub Mori Petasia Top Morowali Central Sulawesi province. Data collection through interviews using questionnaires and observation. The results of the analysis of patterns of food crops cultivation in dryland cropping pattern in terms of Sulawesi  Morowali Tengah.akan described descriptively. The results of this research, the pattern of utilization of food crops in terms of dryland cropping farmers cropping patterns are similar, the ricepaddy-pulses, corn-crops-corn, soy and vegetable-soy-bean-bean-fallow. Cropping Patterns II farmers cropping upland ricemaize-vegetables and planting pattern III upland rice-soybean-fallow.Keywords: food crops, dryland cropping
ANALISA PSIKOMETRI TENTANG KETEGUHAN MORAL SEBAGAI BAGIAN DARI KONSTRUK MORAL MAHASISWA PRIA DAN WANITA USIA 17-23 TAHUN DI UNIVERSITAS PADJADJARAN
Authors: Joefiani Poeti
Published: April 2018

AbstrakBerdasarkan Lickona (1991), konsep moral merupakan interelasi antara pengetahuan, perasaan, dan tindakan moral. Poeti Joefiani (2013) menemukan keteguhan moral merupakan bagian dari konstruk moral. Nathan dkk (2011) dan Fumagalli (2010) mengungkapkan hubungan antara jenis kelamin dan moral. Oleh karena itu, pada studi ini peneliti bermaksud menganalisa reliabilitas dan validitas model konstruk moral berdasarkan jenis kelamin mahasiswa. Pengumpulan data, dilakukan dengan cross-sectional design. Subjek penelitian mahasiswa berusia 17-23 tahun di UNPAD, terdiri dari 1.200 wanita dan 362 pria yang dijaring berdasarkan multistage cluster sampling. Variabel moral meliputi pengetahuan, perasaan, keteguhan, dan tindakan moral diukur menggunakan self-report questionnaire tiga skenario masalah moral. Analisis statistik menggunakan multigroup confirmatory factor analysis (MGCFA). Hasil menunjukkan secara umum tidak terdapat perbedaan struktur moral antara pria dan wanita. Reliabilitas dan validitas menunjukkan kesamaan antar pria dan wanita.Kata kunci : pengetahuan moral, perasaan moral, keteguhan moral, tindakan moralAbstractAccording to Lickona (1991), moral is formed by the interrelation of knowledge, feelings and action. Poeti Joefiani (2013) has found that moral firmness is part of the moral constructs. Nathan et al., (2011) and Fumagalli (2010) has revealed relationship between gender and moral. Therefore, in this study researcher intended to analyze the reliability and validity of moral construct models based on gender. The research design of this study was a cross-sectional design. The respondents were 17-23 year- old students from Padjadjaran University, consisted of 1.200 females and 363 males. Sampling technique was a multistage cluster sampling. The research variables were moral knowledge, moral feeling, moral firmness, and moral action which measured by using three moral-related scenarios in social context. Statistical analysis used multigroup confirmatory factor analysis (MGCFA). In general, results shows that there is no significant difference in moral structure between male and female students. Reliability and validity shows similarities between male and female.Keywords: Moral knowledge, moral feeling, moral firmness, moral action
DIVERSITAS GENETIK KERABAT LIAR UBI JALAR IPOMOEA TRIFIDA (H.B.K.) G.DON. BERUMBI ASAL CITATAH JAWA BARAT BERDASARKAN KARAKTER KROMOSOM (Genetic Diversity Of Wild Relative Of Sweet Potato Tubered-Ipomoea Trifida (H.B.K.) G.don. Originated From Citatah West Java Based On Chromosome Characters)
Authors: Setiawati Tia
Published: April 2018

AbstrakKerabat liar ubi jalar Ipomoea trifida asal Citatah Jawa Barat potensial digunakan dalam program pemuliaan tanaman ubi jalar (Ipomoea batatas (L.) Lam.) Untuk mengetahui diversitas genetik I. trifida  dilakukan pengamatan terhadap karakter kromosom. Bahan tanaman yang digunakan  adalah 10 spesies I. trifida berumbi. Hubungan kekerabatan antar spesies diketahui melalui analisis klaster dan Analisis Komponen Utama/Principal Component Analysis (PCA). Hasil pengamatan menunjukkan pengujian pada 10 aksesi I. trifida berumbi dengan menggunakan 9 karakter kromosom menghasilkan jarak ketidakmiripan (Euclidean coeffisien) yang berkisar 1,75 – 6,22 dan menunjukkan diversitas yang luas. Dendogram yang dihasilkan pada jarak ketidakmiripan 5,23 menunjukkan terbentuknya 3 klaster utama. Analisis Komponen Utama (PCA) menghasilkan 2 komponen utama pertama (PC1 dan PC2) yang telah dapat menjelaskan 89,64% dari total variasi. Kata kunci : Ipomoea trifida, Analisis Klaster, Analisis Komponen UtamaAbstractWild relatives of sweet potato, Ipomoea trifida originated from Citatah West Java was potential use in plant breeding programs of Ipomoea batatas (L.) Lam. To determine the genetic diversity of I. trifida, observation on characters of chromosomes of I.trifida was conducted. Plant materials used ten accessions  of tubered-I. trifida. Relationship between species identified by cluster analysis and Principal Component Analysis (PCA). The results showed that the observation on the 10 accession of tubered-I. trifida using 9 characters chromosome produces dissimilarities distance (Euclidean coefficient) ranging from 1.75 to 6.22. Dendogram generated  at a dissimilarity distance of 5.23 showed the formation of three main clusters. Principal Component Analysis (PCA) produced first two principal component (PC1 and PC2), which has been able to explain 89.64% of the total variation.Keyword  : Ipomoea trifida, Clustering Analysis, Principal Component Analysis
PENYESUAIAN DIRI KOMUNITAS REMAJA SUKU PUNJAB DI KOTA MEDAN
Authors: Nur'aini Nur'aini , Siregar Juke Roosjati , Setiono Kusdwiratri , Agustiani Hendriati
Published: April 2018

AbstrakSecara umum penelitian dilakukan untuk menggali data terkait fenomena penyesuaian diri di lingkungan pendidikan pada kelompok remaja yang berasal dari etnik minoritas di kota Medan, dengan tujuan untuk mengidentifikasi kasus-kasus yang muncul di lingkungan pendidikan yang terkait dengan fenomena penyesuaian diri, khususnya pada komunitas remaja suku Punjab di kota Medan. Responden adalah komunitas remaja suku Punjab di kota Medan, yang berjumlah 60 orang. Tehnik pengumpulan data dilakukan melalui teknik observasi, wawancara dan angket sederhana. Teknik analisis data yang digunakan adalah teknik analisis kualitatif dan kuantitatif. Dari hasil survey yang telah dilakukan, maka diperoleh sebanyak 70% komunitas remaja minoritas suku Punjab mengalami masalah penyesuaian diri dengan teman sebayanya di lingkungan pendidikan. Adapun penyesuaian diri yang dimaksudkan dalam penelitian ini adalah kemampuan komunitas remaja suku Punjab dalam mereaksi perlakuan yang tidak menyenangkan dari teman sebayanya di lingkungan pendidikan, yang dapat diungkap melalui indikator; keadaan fisik, keagamaan, pergaulan dan partisipasi.Kata Kunci : Penyesuaian Diri, Remaja, Suku Punjab
Tumor ovárico benigno proliferante mucinoso de tipo endocervical con hiperplasia microglandular
Authors: López-Carpintero Nayara , Salazar Arquero Francisco Javier
Published: April 2018

ANTECEDENTES: La aparición más común de la hiperplasia microglandular es en el endocérvix, luego en sitios con epitelio glandular mucinoso; en el ovario es excepcional. Se ha descrito posterior a la exposición a la progesterona como anticonceptivo, sin antecedente de exposición hormonal y en mujeres posmenopáusicas. En 2014 la OMS clasificó los tumores mucinosos de ovario como: mucinosos fronterizos (borderline), seromucinosos fronterizos (tumores mucinosos de tipo endocervical-mülleriano) y carcinoma mucinoso.OBJETIVO: Exponer el diagnóstico de una tumoración ovárica benigna infrecuente, en una paciente que recibió estimulación hormonal con fines reproductivos.CASO CLÍNICO: Paciente de 38 años, con hallazgo ecográfico de formación quística de 25 x 33 mm de pared gruesa e irregular, con papila de 6 mm vascularizada y el resto de contenido quístico heterogéneo. La paciente había recibido hiperestimulación ovárica controlada en cuatro ocasiones, la última seis meses previos al hallazgo, momento en que recibía anticoncepción combinada, previa a un nuevo ciclo. Se le practicó anexectomía derecha y lavado peritoneal. El diagnóstico anatomopatológico fue de tumor mucinoso proliferante, de tipo endocervical, con hiperplasia microglandular y citología del líquido aspirado, inflamatoria. El perfil inmunohistoquímico fue: citoqueratina7 positiva y citoqueratina 20, CDX2 (proteína homeobox) y antígeno carcinoembrionario negativos. El anticuerpo monoclonal Ki-67 fue menor de 10%. Los receptores de estrógenos fueron focalmente positivos y los de progesterona positivos de forma difusa e intensa. La paciente evolucionó favorablemente después del tratamiento.CONCLUSIONES: La hiperplasia microglandular puede aparecer en tumores mucinosos benignos de ovario y hay que considerar su posible implicación hormonal.PALABRAS CLAVE: Neoplasias mucinosas del ovario; tumor mucinoso benigno; tumor de ovario; hiperplasia microglandular; antígenocarcinoembrionario.
Comparative chemical investigation and evaluation of antioxidant and tyrosinase inhibitory effects of Withania somnifera (L.) Dunal and Solanum nigrum (L.) berries
Authors: Hameed Abdul , Akhtar Naveed
Published: April 2018

In the present study, berries of two different species of Solanaceae family, Withania somnifera (WS) and Solanum nigrum (SN), were extracted in methanol and then fractionated with solvents, ranging from non-polar to polar, for their phytochemical profiling and investigation of antioxidant and tyrosinase enzyme inhibition capacity. The methanolic extract and n-hexane, ethyl acetate (WSEA, SNEA) and aqueous fractions were chemically analyzed and evaluated for biological activity. Total flavonoids and total phenolics were quantified in WSEA (96.91 ± 1.56 μg QE mg-1 sample and 178.45 ± 2.78 μg GAE mg-1 s ample, r esp.) and S NEA (89.58 ± 0.98 μg QE mg-1 sample and 120.15 ± 2.33 μg GAE mg-1 sample, resp.). HPLC-DAD analysis of ethyl acetate fractions of WS and SN measured 13.74 and 5.34 μg GAE mg-1 dry fraction and 3.72 and 3.41 μg QE mg-1 dry fraction, resp. WSEA and SNEA fractions showed the highest 2,2-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging, total antioxidant capacity and iron reducing power activity. The highest inhibition of tyrosinase enzyme was also exhibited by WSEA and SNEA (59.6 and 58.7 %) resp. This investigation justifies the medicinal value of W. somnifera and S. nigrum berry extracts as potential and readily available sources of natural antioxidants. Marked tyrosinase enzyme inhibition activity and antioxidant activity of both plant extracts might be due to polyphenols and flavonoids.
Advanced spectrophotometric chemometric methods for resolving the binary mixture of doxylamine succinate and pyridoxine hydrochloride
Authors: Katsarov Plamen , Gergov Georgi , Alin Aylin , Pilicheva Bissera , Al-Degs Yahya , Simeonov Vasil , Kassarova Margarita
Published: April 2018

The prediction power of partial least squares (PLS) and multivariate curve resolution-alternating least squares (MCR-ALS) methods have been studied for simultaneous quantitative analysis of the binary drug combination - doxylamine succinate and pyridoxine hydrochloride. Analysis of first-order UV overlapped spectra was performed using different PLS models - classical PLS1 and PLS2 as well as partial robust M-regression (PRM). These linear models were compared to MCR-ALS with equality and correlation constraints (MCR-ALS-CC). All techniques operated within the full spectral region and extracted maximum information for the drugs analysed. The developed chemometric methods were validated on external sample sets and were applied to the analyses of pharmaceutical formulations. The obtained statistical parameters were satisfactory for calibration and validation sets. All developed methods can be successfully applied for simultaneous spectrophotometric determination of doxylamine and pyridoxine both in laboratory-prepared mixtures and commercial dosage forms.
Efficacy of nucleoside analogues for hepatitis B virus-related liver failure: A network meta-analysis
Authors: Wu Jian , Yin Fang , Zhou Xinmin
Published: April 2018

The purpose of this study was to compare the efficacy of nucleoside analogues (NAs) in the treatment of HBV-related liver failure. The data of patients with HBV-related liver failure treated with nucleoside analogues were used to conduct a network meta-analysis. A total of 1660 patients from 12 articles about the efficacy of lamivudine, entecavir, telbivudine and tenofovir for HBV-related liver failure treatment were recruited in the study. The highest two- and three-month survival rate was recorded for patients using tenofovir. The end-stage liver disease (MELD) score and mortality in patients undergoing tenofovir treatment were the lowest. Patients treated with telbivudine had the highest one-month survival rate. Patients receiving enticavir therapy showed the lowest HBV DNA level. Our results indicate that tenofovir may be the best therapy for the treatment of HBV-related liver failure compared to other nucleoside analogues (including lamivudine, entecavir and telbivudine) and non-NAs treatment.
Mycotoxins – climate impact and steps to prevention based on prediction
Authors: Ksenija Nešić
Published: April 2018

Although mycotoxins occur worldwide and represent a global public health threat, their prevalence and quantities in food and feed may vary due to geographic and climatic differences. Also, in accordance with climate change, outside temperatures that are anticipated to rise and rainfall patterns modify the usual mycotoxicological scheme transforms and unexpectedly extreme events happen in practice more often. Such weather conditions increase fungal occurrence and mycotoxin concentrations in crops. Consequently, the risk to human and animal health grows, and strategies to alleviate adverse effects become more complex. This also elevates economic losses. Therefore, the task of mycotoxin prediction has been put in front of the multidisciplinary scientific community recently, and a targeted prevention has become more important. This paper is a review of the latest achievements in this field prepared with the aim to summarize and integrate available data.
An Insight into Histopathologic Examination as a Gold Standard for the Diagnosis of Chronic Apical Periodontitis
Authors: Monea Monica , Pop Anca Maria , Grozescu Veronica , Stoica Alexandra , Mocanu Simona , Moldovan Cosmin
Published: April 2018

Objective: The purpose of our study was to determine the level of correlation between histopathologic results after surgery for chronic apical periodontitis and the radiographic and clinical diagnosis. The status of gold standard technique of histologic examination was evaluated in the diagnosis of apical radiolucency in necrotic teeth.

Methods: Out of 154 patients with incorrect root fillings and apical radiolucency included in an endodontic retreatment protocol, 87 patients (108 teeth) were scheduled for apical surgery at 3-6 months control recall. Clinical and radiographic exams were completed prior to surgery and compared to the histological results of apical biopsies. The collected data were statistically analyzed with the SPSS version 20.0 and the Chi-square test was used to determine the associations between clinical and histologic diagnosis. A value of p <0.05 was considered statistically significant.

Results: There was a statistically significant difference between the number of cases diagnosed as granulomas or cysts during clinical and radiological evaluation compared to histologic evaluation of tissue samples, with 40.9% to 75.9% and 54.2% to 16.8% respectively (p<0.05).

Conclusions: The final diagnosis was obtained only after histologic examination of apical tissue samples, which means that the observations made based on radiologic investigations must be confirmed by biopsy.
Clinical and Therapeutic Trial for the Efficacy of Narrow Band - UVB Phototherapy versus Systemic Therapy in Moderate and Severe Atopic Dermatitis of the Adult
Authors: Fekete Gyula Laszlo , Fekete László
Published: April 2018

Objectives: The aim of this clinical and therapy study was to evaluate the efficacy of NB-UVB phototherapy versus systemic therapy in moderate-to-severe atopic dermatitis of the adult.

Material and methods: The subjects of the study were divided into two groups of 25 adult patients with moderate and severe atopic dermatitis according to the inclusion criteria. The first group of 25 patients were treated with systemic corticosteroids while the second group of 25 patients were treated with NB-UVB phototherapy. At the end of the study, after all the data were centralized, we performed a statistical analysis of the results, comparing the two groups as well as the efficacy of the different therapies.

Results: In group I the clinical efficacy of the systemic corticosteroid treatment was achieved, on average, at 4 weeks in patients with moderate atopic dermatitis and at 6 weeks in patients with severe atopic dermatitis. In group II the clinical effecacy of NB-UVB phototherapy was achieved, on average, at 6 weeks for patients with moderate atopic dermatitis and at 8 weeks for those with the severe form. In both groups, the total IgE serum levels were elevated at the beginning, and they became normal throughout the clinical improvement. Remarkable therapy-related side effects were found in the first study group.

Conclusion: We conclude that NB-UVB phototherapy had similar efficacy in treating moderate-to-severe atopic dermatitis with minimal side effects compared to systemic corticosteroid therapy.
Epidemiological Surveillance of Influenza Virus Matrix Gene in Pigs, in Lagos, Nigeria, 2015-2016
Authors: Anjorin Abdul-Azeez A. , Salu Olumuyiwa B. , Oyefolu Akeeb O.B. , Oke Bamidele O. , Ayorinde James B. , Orenolu Mercy R. , Maryam Abdullah A. , Roosevelt Anyanwu A. , Wellington Oyibo A. , Sunday Omilabu A.
Published: April 2018

The co-infection of different influenza A virus enable viral gene re-assortments especially in pigs that serve as mixing vessel with the possibility of emergence of novel subtypes. Such re-assortants pose serious public health threat, as epitomised by the emergence of pandemic influenza in 2009. In Nigeria, there is mixture of animal species and highly populated densities that can increase the risk of influenza virus endemicity, genetic reshuffling and emergence of future pandemic influenza viruses. Thus, this study was aimed at determining influenza virus disease burden in pigs. This study was a cross sectional molecular surveillance of influenza virus. A total of 194 pig nasal samples from reported cases and randomly sampled were collected from pig farms in Ojo and Ikorodu in Lagos State between October, 2015 and April, 2016. The samples were investigated for the presence of influenza virus matrix gene by Reverse Transcriptase Polymerase Chain Reaction and detected by gel electrophoresis. P-values were calculated using Chi-square and Fisher’s exact tests. The result showed that 25 (12.9%) samples were positive for influenza A virus, out of which, 20 (80%) were samples from Ojo while 5 (20%) were samples from Ikorodu. Epidemiological parameters for the sampled locations, methods either as reported case or randomised, and sex compared were significant at 95% confidence interval. This study determined influenza viral burden in pigs with a molecular prevalence of 12.9% to influenza A. It further confirmed the sub-clinical and clinical circulation of Influenza A virus in pigs in Ojo and Ikorodu in Lagos. Therefore, the detection of influenza A virus in commercial pigs in Nigeria accentuates the importance of continuous surveillance and monitoring of the virus in order to prevent the advent of virulent strains that may spread to Pig-handlers and the community at large.
Carbonaceous Soot from Thermal Decomposition of Kerosene: A Pioneering Report for Paint Preservation
Authors: Obidi Olayide F. , Okoli Onyiye V. , Nwachukwu Simon C. U.
Published: April 2018

Bacterial resistance to conventional paint biocides is widely documented. However, an investigation regarding the preservative potential of carbonaceous soot as a viable alternative is novel. Fresh paint samples (SA, SB and SC) were collected in duplicates from a reputable paint manufacturing company in Lagos, Nigeria. SA was produced with conventional paint biocide, SB and SC were without biocide. All samples were inoculated with 0.032 × 106 cfu/mL of Pseudomonas aeruginosa PA01 (NC 002516.2) previously isolated from spoilt paints and identified by the 16S rDNA analysis. SB was supplemented with crude soot (10 g/L of distilled water) at 200 mL v/v. The preservative efficiency of soot was investigated by monitoring the bacterial population (BP), optical density (OD600nm), viscosity (VIS), the transmittance (TR) and specific gravity (SG) of the samples bi-weekly for 14 weeks. BP increased drastically from 0.032-31.61 × 106 and from 0.032-112.93 × 106 in SA and SC respectively. In contrast, SB increased from 0.032-24.63 × 106 by week 4 but reduced from 24.63 – 10.95 × 106 by week 14. The OD of SA increased from 1.55 to 1.98 by week 8 and decreased to 1.74 by week 14. SB had a decrease from 1.60 to 1.49 by week 4 and increased to 1.63 by week 14, while SC increased from 1.59 to 2.54 by the 14th week.TR increased from 1.80 to 2.30 and 1.25 to 2.20 in SA and SC respectively. In contrast, TR decreased from 2.00 to 1.25 in SB. The viscosity and specific gravity values of all the samples decreased with time with the highest decrease observed in SC and the lowest in SB. The test crude soot showed preservative potential in paints.
Editorial 2018: The Croatian Journal of Fisheries: Ribarstvo 80th Anniversary
Authors: Matulić Daniel , Tomljanović Tea
Published: April 2018

The Croatian Journal of Fisheries (Croat J Fish) was launched 80 years ago, in 1938, as Ribarstvo, so the current issue of Croat J Fish celebrates this significant event. Since 1992, the Journal was issued quarterly on a regular basis under the name Ribarstvo. However, in 2012 the Journal changed its name to Croatian Journal of Fisheries: Ribarstvo to attract more international audiences. The scope of the Journal has not changed much during its development and has mainly focused on ichthyology, aquaculture, ecology, fish pathology, marine and inland waters and other issues related to fisheries. Nowadays, the Journal tends to be a highquality open-access scientific journal, visible online, of interest to a wide scientific community. Expanding the number of international associate editors also indicates this process. In the segment of publishing strategies, more effort is needed to increase citation activity of the Journal. The Editorial 2018 also provides information on the articles published and the list of reviewers who participated in the review process in 2017.
Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake.
Authors: Špoljar Maria , Dražina Tvrtko , Lajtner Jasna , Kovačević Goran , Pestić Ana , Matijašec Dora , Tomljanović Tea
Published: April 2018

Shallow lakes are strongly affected by global climate changes reflected in significant parameters of ecosystem deterioration, i.e. biodiversity decrease, and water turbidity. Zooplankton research in Škrčev kut oxbow lake (Krapina River watershed, NW Croatia, Europe) was conducted during the summer of 2012 and 2013 with the aim to determine the effect of inter-annual, short-timescale changes of hydrological regime on environmental conditions, macrophytes, zooplankton and fish assemblage within an oxbow lake in the temperate region. Within one-year period the water level increased by 2 meters. This caused a significant reduction of floating-leaved macrophytes (i.e. Nuphar lutea), while turbidity, ortho-phosphate and chlorophyll a concentrations increased. These altered ecological conditions were reflected in the shift from floating-leaved macrophytes at the lower water level to phytoplankton-dominated lake at the higher water level. Zooplankton underwent significant alteration in assemblage. The results suggest that fish preference suppressed cladocerans and enhanced the rotifer and copepod abundance. Our results indicate that even in a short-timescale zooplankton assemblage mediates in the modification of ecosystem functioning.
The occurrence of royal flagfin Aulopus filamentosus (Bloch, 1792) in Mersin bay (North-Eastern Mediterranean) Turkey
Authors: Erguden Deniz , Bayhan Yusuf Kenan , Erguden Sibel Alagoz , Altun Ayhan
Published: April 2018

Three specimens (1 male and 2 females) of royal flagfin Aulopus filamentosus (Bloch, 1792) were caught at a depth of 184 m off Erdemli, Mersin Bay (northeastern Mediterranean, Turkey) in June 2015. The present paper reports the first occurrence and is the confirmation of royal flagfin A. filamentosus from the northeastern Mediterranean Sea, Turkey. Since it has been recorded only once in the last sixty years, this species could be considered as exceptionally rare in the easternmost area of the Mediterranean Sea, Turkey.