bluuebunny/crossref_metadata_2025 huggingface dataset:
Immobilization of laccase onto porous polyvinyl alcohol/halloysite hybrid beads for dye removal
Authors: Chao Cong , Guan Huijuan , Zhang Jun , Liu Yang , Zhao Yafei , Zhang Bing
Published: November 2017

Laccase was immobilized in polyvinyl alcohol beads containing halloysite nanotubes (PVA/HNTs) to improve the stability and reusability of enzyme. The porous structure of PVA/HNTs beads facilitates the entrapment of enzyme and prevents the leaching of immobilized laccase as well. Halloysite nanotubes act as bridge to connect the adjacent pores, facilitating the electron transfer and enhancing the mechanical properties. PVA/HNTs beads have high laccase immobilization capacity (237.02 mg/g) and activity recovery yield (79.15%), indicating it can be used as potential support for laccase immobilization. Compared with free laccase, the immobilized laccase on hybrid beads exhibits enhanced pH tolerance (even at pH 8.0), good thermal stability (57.5% of the initial activity can be maintained at 75 °C), and excellent storage stability (81.17% of enzyme activity could be retained after storage at 4 °C for 5 weeks compared with that for free enzyme of 60%). Also, the removal efficiency for reactive blue can reach as high as 93.41% in the presence of redox mediator 2,2-azinobis(3-ethylbenzthiazoline-6-sulfonate), in which adsorption and degradation exist simultaneously. The remarkable pH tolerance, thermal and storage stability, and reuse ability imply potential application of porous PVA/HNTs immobilized enzyme in environmental fields.
Sharing Family Life Information Through Video Calls and Other Information and Communication Technologies and the Association With Family Well-Being: Population-Based Survey
Authors: Shen Chen , Wang Man Ping , Chu Joanna TW , Wan Alice , Viswanath Kasisomayajula , Chan Sophia Siu Chee , Lam Tai Hing
Published: November 2017

Background

The use of information and communication technologies (ICTs) for information sharing among family members is increasing dramatically. However, little is known about the associated factors and the influence on family well-being.

Objective

The authors investigated the pattern and social determinants of family life information sharing with family and the associations of different methods of sharing with perceived family health, happiness, and harmony (3Hs) in Hong Kong, where mobile phone ownership and Internet access are among the most prevalent, easiest, and fastest in the world.

Methods

A territory-wide population-based telephone survey was conducted from January to August 2016 on different methods of family life information (ie, information related to family communication, relationships with family members, emotion and stress management) sharing with family members, including face-to-face, phone, instant messaging (IM), social media sites, video calls, and email. Family well-being was assessed by three single items on perceived family health, happiness, and harmony, with higher scores indicating better family well-being. Adjusted prevalence ratios were used to assess the associations of sociodemographic factors with family life information sharing, and adjusted beta coefficients for family well-being.

Results

Of 2017 respondents, face-to-face was the most common method to share family life information (74.45%, 1502/2017), followed by IM (40.86%, 824/2017), phone (28.10%, 567/2017), social media sites (11.91%, 240/2017), video calls (5.89%, 119/2017), and email (5.48%, 111/2017). Younger age and higher education were associated with the use of any (at least one) method, face-to-face, IM, and social media sites for sharing family life information (all P for trend <.01). Higher education was most strongly associated with the use of video calls (adjusted prevalence ratio=5.61, 95% CI 2.29-13.74). Higher household income was significantly associated with the use of any method, face-to-face, and IM (all P for trend <.05). Sharing family life information was associated with a higher level of perceived family well-being (beta=0.56, 95% CI 0.37-0.75), especially by face-to-face (beta=0.62, 95% CI 0.45-0.80) and video calls (beta=0.34, 95% CI 0.04-0.65). The combination of face-to-face and video calls was most strongly associated with a higher level of perceived family well-being (beta=0.81, 95% CI 0.45-1.16).

Conclusions

The differential use of ICTs to share family life information was observed. The prevalence of video calls was low, but associated with much better family well-being. The results need to be confirmed by prospective and intervention studies to promote the use of video calls to communicate and share information with family, particularly in disadvantaged groups.
A Web- and Mobile-Based Map of Mental Health Resources for Postsecondary Students (Thought Spot): Protocol for an Economic Evaluation (Preprint)
Authors: Kaur Amandeep , Isaranuwatchai Wanrudee , Jaffer Aliya , Ferguson Genevieve , Abi-Jaoude Alexxa , Johnson Andrew , Hollenberg Elisa , Wiljer David
Published: November 2017

BACKGROUND

Youth demonstrate a low propensity to seek help for mental health issues and exhibit low use of health services despite the high prevalence of mental health challenges in this population. Research has found that delivering interventions via the internet and mobile devices is an effective way to reach youth. Thought Spot, a Web- and mobile-based map, was developed to help transition-aged youth in postsecondary settings overcome barriers to help-seeking, thereby reducing the economic burden associated with untreated mental health issues.

OBJECTIVE

This paper presents the protocol for an economic evaluation that will be conducted in conjunction with a randomized controlled trial (RCT) to evaluate the effectiveness and cost of Thought Spot compared with usual care in terms of self-efficacy for mental health help-seeking among postsecondary students.

METHODS

A partially blinded RCT will be conducted to assess the impact of Thought Spot on the self-efficacy of students for mental health help-seeking. Students from 3 postsecondary institutions in Ontario, Canada will be randomly allocated to 1 of 2 intervention groups (resource pamphlet or Thought Spot) for 6 months. The economic evaluation will focus on the perspective of postsecondary institutions or other organizations interested in using Thought Spot. Costs and resources for operating and maintaining the platform will be reported and compared with the costs and resource needs associated with usual care. The primary outcome will be change in help-seeking intentions, measured using the General Help-Seeking Questionnaire. The cost-effectiveness of the intervention will be determined by calculating the incremental cost-effectiveness ratio, which will then be compared with willingness to pay.

RESULTS

The RCT is scheduled to begin in February 2018 and will run for 6 months, after which the economic evaluation will be completed.

CONCLUSIONS

We expect to demonstrate that Thought Spot is a cost-effective way to improve help-seeking intentions and encourage help-seeking behavior among postsecondary students. The findings of this study will help inform postsecondary institutions when they are allocating resources for mental health initiatives.

CLINICALTRIAL

ClinicalTrials.gov NCT03412461; https://clinicaltrials.gov/ct2/show/NCT03412461 (Archived at WebCite at http://www.webcitation.org/6xy5lWpnZ)
DRAMATURGIA E PÓS-MODERNIDADE: A RAPSÓDIA COMO ESTRATÉGIA PÓS-MODERNA PARA O DRAMA
Authors: Sanches João Alberto Lima
Published: November 2017

O artigo discute estratégias de composição recorrentes nas dramaturgias contemporâneas, relacionando-as à noção de rapsódia, formulada pelo dramaturgo e teórico francês Jean-Pierre Sarrazac, e ao princípio de multiplicidade, abordado pelo escritor Ítalo Calvino no livro Seis Propostas para o próximo milênio. O artigo desenvolve uma associação entre multiplicidade, procedimentos rapsódicos de construção dramática e considerações sobre a pós-modernidade. Para isso, escritos do filósofo Jean-François Lyotard são utilizados como referência, e também a noção de princípio da pesquisadora e atriz Sônia Rangel.
O QUE O TEATRO SABE? APROXIMAÇÕES ENTRE TEATRO E FILOSOFIA PARA COMPREENDER O TEATRAR
Authors: Silva Carlos Eduardo
Published: November 2017

O presente artigo reflete sobre uma disciplina que se encarrega de pensar o ser do Teatro, abordando-o desde a Filosofia com o concurso da Ontologia que investiga os entes emergentes do fenômeno teatral e fomenta uma Base Epistemológica da concepção que orienta tais acontecimentos. Além disso, observa-se a relação e as mútuas implicações ocorridas entre essas duas áreas do saber. Para tanto, recorre-se a Krasner e Saltz, pelas intersecções que realizam entre Teatro e Filosofia; a Deleuze, em razão da sua concepção do pensamento filosófico em constante interação com a arte; a Jorge Dubatti, segundo a argumentação que realiza para justificar a criação da referida disciplina; a Bakhtin e Caballero, pela noção de liminaridade, como movimento de trânsito entre estados, paisagens conceituais, etc.; a Pareyson e sua compreensão de estética e poética; a Heidegger, cuja ontologia dedica-se ao entendimento do ente e do ser, que são aplicados ao Teatro; e Badiou, para tratar das aproximações possíveis entre Filosofia e Arte, especialmente, o Teatro. Por fim, chega-se às estruturas recorrentes que constituem a definição genética de Teatro.
L'IMPROVISATION ET LE JEU MASQUÉ DANS LA FORMATION DE L'ACTEUR
Authors: Freixe Guy
Published: November 2017

Cet article traite sur la pédagogie de l`acteur dont les techniques du masque et de l`improvisation sont les fondements et les instruments privilégiés pour établir le jeu. Cette formation a comme influence la filiation Jacques Copeau-Jacques Lecoq-Ariane Mnouchkine, dont les travaux privilégient le jeu, où l'homme agit et pense avec tout son corps, pouvant inventer avec le masque un théâtre poétique.
REALISASI PENGENDALI INTENSITAS CAHAYA LAMPU DENGAN KONTROL SUARA DAN GOOGLE ANDROID SPEECH RECOGNITION API
Authors: Hariyani Yuli Sun , Fitri Cucu , Hadiyoso Sugondo
Published: November 2017

Dalam kehidupan sehari-hari setiap orang tidak dapat lepas dari cahaya untuk melakukan berbagai aktivitas di ruangan. Namun cahaya di ruangan harus disesuaikan dengan kebutuhan aktivitas masing-masing untuk menghindari pemborosan energi listrik. Terkadang sebagian orang sering lupa dan malas untuk mematikan atau menyalakan lampu dalam keadaan tertentu karena saklar yang digunakan masih manual. Oleh karena itu dibutuhan saklar yang dapat dikendalikan dari jarak jauh. Penelitian ini merealisasikan sistem pengendali lampu jarak jauh berbasis suara yang didukung oleh google voice recognition engine dan menggunakan android , tidak hanya mematikan dan menghidupkan lampu, namun juga mengatur lampu dengan beberapa level intensitas cahaya. Arduino Uno R3 digunakan sebagai piranti pengendali dengan Bluetooth sebagai media komunikasi antara smartphone dan mikrokontroller. Berdasarkan pengujian sistem dan alat yang direalisasikan, untuk pengujian di dalam ruangan dengan penghalang, maksimal jangkauan control mencapai 10 meter dengan respon lampu rata-rata 1,426 detik.
ESTIMASI ARAH SUMBER SUARA BERBASIS GAUSSIAN MIXTURE MODEL
Authors: Safitri Irma
Published: November 2017

Estimasi arah sumber suara menjadi topik penting yang berhubungan dengan aplikasi robot, sistem sensor dan keamanan. Variasi kondisi ekperimen dalam melakukan estimasi tersebut akan menentukan nilai akurasi. Dalam penelitian ini, variasi terhadap temperatur dan waktu pantul diambil untuk dianalisa terhadap nilai akurasi estimasi arah sumber suara. Sinyal yang digunakan adalah sinyal binaural dengan menggunakan sinyal pengganggu white noise dan human speech like (HSL) noise untuk sudut azimuth bervariasi. Estimasi dilakukan dengan menggunakan metode Gaussian Mixture Model (GMM) untuk tipe horizontal plane dan horizontal â€“ vertical planes. Hasil eksperimen menunjukkan sudut azimuth yang dekat dengan pendengar akan menyampaikan sinyal suara lebih cepat daripada sudut yang jauh, sinyal dengan durasi waktu yang panjang yaitu 2000 milidetik akan memberikan akurasi estimasi yang lebih tinggi daripada durasi sinyal yang lebih pendek: 100, 500, dan 1000 milidetik. Selain itu, akurasi estimasi lebih tinggi untuk suara dengan white noise daripada suara dengan HSL noise. Hasil lainnya adalah estimasi memiliki performansi lebih tinggi untuk horizontal â€“ vertical planes daripada hanya kondisi horizontal plane. Estimasi mencapai 98,6% akurasi untuk horizontal plane dan 100% akurasi untuk horizontal-vertical planes.
PEMODELAN DISTRIBUSI TINGKAT IMBAL HASIL INDEKS HARGA DI TUJUH BURSA ASIA
Authors: Rikumahu Brady
Published: November 2017

This paper examines the return distributions of 7 markets in the Asian region, namely Hongkong, Indonesia, Malaysia, Korea, Japan, Shanghai, and Singapore, to find out whether the return distributions in those markets follow a specific distribution. Using data from January 2000 to September 2009, the return distributions of each market were constructed and was first fitted to the normal distribution to find out whether or not each market behaves according to the standard theory of finance and investment â€“ which stated that the financial time series follow a random walk â€“ and thus would fit the normal distribution. The result of fitting the return distributions of the 7 markets to normal distribution shows that none of the return distributions follows the normal distribution as evident from the leptokurtic phenomena marked by the excess kurtosis compared to the normal distribution curve and also from the fatter than normal distribution tails and the existence of returns that lie outside the area predictedby the normal distribution.The return distributions were then fitted to a series of theoretical probability distribution. Each of the distribution was fitted to the theoretical. The results are: the Hongkong and Shanghai markets follow the Laplace distribution while the other five markets: Indonesia, Malaysia, Korea, Japan, and Singapore follow the Johnson SU distribution.
Pengaruh Pembelajaran Kurikulum Berbasis Kompetensi Pada Mata Kuliah Jaringan Komputer (Studi Kasus : Program Studi Teknik Informatika-Universitas Semarang)
Authors: Handayani Sri
Published: November 2017

The even semester 2014/2015 Technical Information Engineering University of Semarang (USM) has been running the Competency Based Curriculum (CBC) in the management of learning. Conversions that occur in some subjects at an increase in scheduled meetings in the classroom or in the laboratory. Computer Networks is one of the subjects who experienced a conversion. In the curriculum in 2008, Computer Networking has a number of credits 3. From the 2 credits 3 credits are for credits 1 credits for theory and practical credits. While at the CBC in 2013, Computer Networking has 4 credits, with details of 2 credits 2 credits theory and practicum. As lecture and instructor Computer Network, researchers interested in studying the effect of applying the CBC in 2013 in the subje ct of Computer Network. Does the addition of meeting practical and theoretical material renewal in accordance with the expected competencies?. Researchers tried applying the CBC in 2013 by conducting action research. Implementation of the research was conducted during an ongoing lecture that even semester 2015/2016. The results of the study during the first half of researchers will compare with the achievements that never existed when the old curriculum still in use. The goals of this research is, subjects in the Computer Network has always been one of the subjects that the content of the material and its application in the lab was able to follow the needs of the workforce
Perancangan Buku Batik Plumpungan Salatiga Dengan Menggunakan Teknologi Augmented Realty Berbasis Android
Authors: Winata Ika Cahya
Published: November 2017

 Batik Indonesia telah ditetapkan oleh United Nations Educational, Scientific, and Cultural Organization (UNESCO) sebagai warisan kemanusiaan untuk budaya lisan dan non-bendawi pada tanggal 2 Oktober 2009. Pengakuan UNESCO ini meliputi teknik, teknologi serta motif batik Indonesia. Indonesia memiliki motif batik yang beragam, dan hampir disetiap daerah memiliki motif batik yang berbeda-beda. Batik Plumpungan Salatiga merupakan karya seni batik kontemporer yang didesain dari batu Prasasti Kota Salatiga. Batik Salatiga ini masih tergolong baru sehingga hanya dikenal oleh golongan tertentu saja. Untuk memperkenalkan batik Plumpungan Salatiga dibutuhkan media informasi yang dapat menarik masyarakat untuk lebih mengenal batik Plumpungan. Media buku dipilih sebagai sarana untuk memberikan informasi tentang batik Plumpungan Salatiga. Seiring dengan berkembangnya teknologi dan permasalahan yang terjadi, Peneliti menggunakan teknologi Augmented Reality sebagai metode dalam memberikan informasi dan menarik minat masyarakat untuk lebih mengenal dan mengetahui tentang batik Plumpungan yang dapat dijalankan pada smartphone Android. Objek penelitian ini adalah batik Plumpungan Salatiga. Metode Augmented Reality ini sudah diujikan kepada pemilik batik dan 20 responden masyarakat didapatkan hasil metode Augmented Reality dapat memberikan informasi mengenai pengaplikasian motif batik Plumpungan Salatiga pada objek 3D yang ditampilkan.

 
Carta aos Leitores
Authors: Leitores Carta Aos
Published: November 2017

Carta aos Leitores
A impressão dos jornais recifenses no estopim do Movimento Tenentista: uma análise das repercussões jornalísticas sobre o dia 05 de julho de 1922
Authors: Alfino Luiz Carlos dos P. Serpa
Published: November 2017

Os anos de 1920 representam o período mais conturbado da Primeira República (1889-1930), com graves problemas de ordem política e social. Um cenário em que o descontentamento militar já era resquício da sucessão de Floriano Peixoto por representantes dos grandes estados produtores (SP e MG), afastando da vida política nacional a cúpula do Exército. Estudar as repercussões das notícias relacionadas ao Estopim do Movimento Tenentista na imprensa recifense é o objetivo deste artigo. A pesquisa foi realizada na Fundação Joaquim Nabuco, com os principais jornais em circulação do período de janeiro a julho de 1922. A hipótese inicial que se apresenta é que a inexistência de uma imprensa oficial estatal possibilitou o uso da imprensa privada, utilizando-se do trabalho dos intelectuais para a construção de consensos e uma formação ideológica na sociedade.
04 O “DNA da Fotografia”: fotojornalismo de Paulo Moreira – uma história de pai para filhos
Authors: Venegas Soraya
Published: November 2017

Sem formação específica, começa-se na profissão de fotógrafo de imprensa geralmente pela direta inserção no mercado. Para muitos, os "verdadeiros” profissionais não vem da universidade, as são forjados nas redações, aprendem “na marra”, na “escola da vida”. Vários deles começaram como aprendizes, na reportagem ou no laboratório fotográfico. Ainda é comum a existência famílias de fotojornalistas e, assim, a atividade passa de pai para filho, quase como herança genética. Paulo Moreira, nascido em 1940, é um dos representantes da geração marcada pela falta de formação, pela luta pelos direitos profissionais e pela resistência ao regime militar. Atuante entre 1960-1990 é pai de três repórteres-fotográficos com mais de 20 anos de atividade profissional. Seu estilo, muitas vezes questionado pela “criatividade” e interação com o otografado, tem seguidores até hoje. E o cotidiano de sua família é transpassado por clicks que contam a história do fotojornalismoe do país.
01. Cursos de graduação em Radialismo no Brasil: trajetória e cenário
Authors: Prata Nair , Pessoa Sônia Caldas , Santos Maria Cláudia , Campelo Wanir
Published: November 2017

Visualizar o desenvolvimento e o cenário atual dos cursos de Radialismo no Brasil é o objetivo da pesquisa realizada entre fevereiro e dezembro de 2011 em Instituições de Ensino Superior (IES). Prestes a completar 50 anos de implantação no país, Radialismo (Rádio e TV), criado como habilitação do curso de Comunicação Social, passa por mudanças na nomenclatura e se adapta às novidades do mercado, incorporando a internet.
Eduardo Escorel e a política dos arquivos: notas sobre a trajetória de imagens de um cortejo fúnebre no Brasil de 1968.
Authors: Machado Patrícia , Blank Thais
Published: November 2017

Entrevista
Ficha Catalográfica
Authors: Pesquisadores de História da Mídia Rede Brasileira De
Published: November 2017

Ficha Catalográfica
Expediente
Authors: Pesquisadores de História da Mídia Rede Brasileira De
Published: November 2017

Expediente
01. La cultura escrita en España (1833-1936): balance y perspectivas
Authors: Botrel Jean-François
Published: November 2017

A partir dos cenários ideiais e do que já se conquistou, e tendo por base também possíveis perspectivas, propõe-se a defesa de uma visão mais ampla e ‘ecológica’ do que denominamos História da Cultura Escrita na Espanha do século 19. Uma visão nem espacial nem cronológica, nem pragmaticamente restringida e dinamicamente articulada com outros âmbitos da História Cultural, como as produções e as práticas, com uma persistente preocupação por chegar a conhecer o particular (mediante relatos individuais) e o próprio (a situação espanhola vs a estrangeira, sobretudo da Europa do Norte), e a generalizar a partir de uma visão comparada. A ilustrar tais opções e suas possíveis consequências, partindo de análises anteriores e do que se vem praticando desde o começo deste século, procurando abrir mão de desnecessárias repetições, é o que pretende, enfim, este paper.
11. Desdobramentos do Papel dos Agentes Formadores da Cadeia Produtiva em Publicações: um caso de Crowdfunding
Authors: Barcellos Marília de Araujo , Garcia Jaimeson Machado
Published: November 2017

O presente artigo aborda as diferentes etapas do processo editorial e o deslocamento nas funções dos profissionais envolvidos na realização de financiamento coletivo. O objetivo é refletir sobre desafios enfrentados na execução do trabalho editorial, no conjunto das especificidades surgidas quando se encontram articuladas ao sistema tradicional/impresso de produção, frente ao digital. O corpus utilizado é a autopublicação, por meio de crowdfunding, a partir de um recorte da plataforma Catarse. A metodologia incide no resgate do referencial teórico,– formulado por autores como Pierre Bourdieu e John Thompson, que circundam o conceito de campo –, bem como na realização de entrevista com Ricardo Tokumoto, autor do livro Ryotiras Omnibus. Os resultados apontam para a manutenção do sistema impresso, em que há o acúmulo e o deslocamento na função dos agentes ocupantes da cadeia editorial.
01. O resgate das Ciências Humanas no âmbito das Ciências da Comunicação
Authors: Fernandes Guilherme Moreira
Published: November 2017

Resenha
KARAKTERISTIK KETEBALAN EDIBLE FILM BERBAHAN DASAR BIOSELULOSA NATA DE SIWALAN DENGAN PENAMBAHAN GLISEROL
Authors: Salsabila Aufa , Ulfah Maria
Published: November 2017

Industri saat ini di dominasi bahan pengemas berbahan dasar plastik, sehingga mengakibatkan meningkatnya limbah plastik dan menyebabkan polusi lingkungan, mahal dalam daur ulang dan tercemarnya bahan pangan yang dikemas karena adanya zat-zat tertentu yang termigrasi kedalam bahan pangan tersebut. Edible film merupakan lapisan tipis dan transparan yang terbuat dari bahan yang dapat dimakan dan dapat langsung sekalian dimakan beserta produk pangannya. Salah satu bahan baku edible film adalah bioselulosa nata de siwalan, penambahan plasticizer gliserol digunakan untuk meningkatkan karakteristik edible film. Tujuan penelitian ini adalah untuk mengetahui konsentrasi gliserol yang paling tepat untuk mendapatkan karakteristik ketebalan edible film berbahan dasar bioselulosa nata de siwalan. Metode penelitian ini menggunakan Rancangan Acak Lengkap dengan empat perlakuan dan empat ulangan dengan penambahan gliserol 0%, 10%, 20%, 30%. Nilai ketebalan edible film yang dihasilkan dari keempat perlakuan berkisar 0 – 0,048 mm. Data analisis menggunakan analisis ragam (ANOVA) dan dilanjutkan uji Duncan dengan selang kepercayaan 1%, pemilihan perlakuan yang paling tepat adalah edible film dengan konsentrasi gliserol 30%.
ANALISIS KETERAMPILAN BERPIKIR KRITIS DAN METAKOGNITIF MAHASISWA PROGRAM STUDI PENDIDIKAN BIOLOGI
Authors: Budi M Ipah , Ghofar CW Azizul
Published: November 2017

Penelitian ini ditujukan untuk mengetahui pola keterampilan berpikir kritis danmetakognitif mahasiswa di Program Studi Pendidikan Biologi UniversitasPGRI Semarang. Penelitian ini melibatkan mahasiswa di semester 2 dansemester 4 yang terdiri dari 66 mahasiswa. Keterampilan berpikir kritis danmetakognitif diukur secara kuantitatif menggunakan tes essay yang dinilaidengan rubrik keterampilan metakognitif dan rubrik Hart untuk ketermpilanberpikir kritis. Data yang diperoleh selanjutnya dianalisis secara deskriptif dandilanjutkan dengan analisis korelasi product moment dilanjutkan dengananalisis regresi untuk menentukan pola hubungan dari keterampilan berpikirkritis dan metakognitif. Hasil penelitian menunjukkan bahwa sebaranketerampilan Keterampilan berpikir kritis dan metakognitif berkisar dalamrentang cukup. Disamping itu, ditemukan adanya hubungan yang positif antaraketerampilan berpikir kritis dan metakognitif dan pola garis regresi sebesar Y=22.380 + 0.659 X.
ANALISIS CONTENT KNOWLEDGE GURU BIOLOGI DAN HASIL BELAJAR KOGNITIF SISWA DALAM PEMBELAJARAN MATERI VIRUS
Authors: Setianingsih Setianingsih , Hartadiyati W.H Eny
Published: November 2017

Tujuan penelitian ini adalah untuk mengetahui content knowledge gurubiologi dan hasil belajar kognitif siswa dalam pembelajaran materi virus olehguru di salah satu Madrasah Aliyah Negeri (MAN) di Kota Semarang. Datadiperoleh dengan menggunakan metode observasi, wawancara, dandokumentasi. Teknik analisis data yang digunakan dalam penelitian ini adalahdeskriptif kualitatif untuk mengetahui Content Knowledge guru biologi dandeskriptif kuantitatif untuk mengetahui hasil belajar kognitif siswa. Hasil penelitian menunjukkan bahwa content knowledge guru biologi materi virusmeliputi aspek kesesuaian materi sudah sesuai dengan Silabus, KD(Kompetensi Dasar), indikator materi, dan tujuan pembelajaran; aspekkeluasan dan kedalaman materi virus terdiri dari pengertian virus, ciri-cirivirus dan klasifikasi virus, cara hidup virus, reproduksi virus, peranan virus,penyakit yang disebabkan oleh virus sampai pencegahan virus yang sudahsesuai dengan RPP, buku biologi sebagai sumber belajar yang merujuk padabuku Campbell sebagai referensi pembelajaran; aspek pengembangan materiguru terlihat dalam bentuk buku biologi yang digunakan, mediapembelajaran, internet sebagai sumber belajar dan seminar atau workshopyang diikuti untuk mengetahui perkembangan biologi khususnya materi virus.Hasil belajar kognitif siswa materi virus menunjukkan 100% siswa tuntasbelajar.Kata kunci : content knowledge guru biologi, hasil belajar kognitifsiswa.
KAJIAN NILAI KARAKTER PADA BAHAN AJAR IPA SMP DI JAWA TENGAH
Authors: Nurwahyunani Atip
Published: November 2017

Penelitian ini bertujuan mengkaji kelayakan media cetak IPA SMP yang beredar wilayah Kota Semarang, dan Jepara. Kajian studi kelayakan media cetak (buku text) mencakup kelayakan isi, kebahasaan, dan Penyajian berdasarkan nilai karakter. Penelitian ini menggunakan pendektakan deskriptif kualitatif, dengan mengumpulkan data dari hasil validasi dan wawancara. Hasil yang diperoleh pada penelitian ini adalah Secara umum Buku yang di gunakan di Kota Semarang dan Kabupaten Jepara pada mata pelajaran IPA kelas VIII tingkat SMP sudah sesuai. Hal tersebut berdasarkan pada hasil analisis dan pembahasan yaitu: 1) Need Assesment pada penilaian kelayakan bahan ajar dan pendidikan karakter yang dikembangkan oleh peneliti telah layak berdasarkan syarat kelayakan BSNP dan bisa digunakan untuk menganalisis bahan ajar. 2) Buku IPA SAINS BSE telah memiliki kelayakan konsep, kelayakan penyajian, baik penyajian bahasa maupun gambar sesuai dengan need assesment yang dikembangkan oleh peneliti. 3) Buku Sains BSE Pusat Perbukuan Departemen Pendidikan Nasional karya Teguh Sugiyarto IPA SAINS BSE dapat memfasilitasi siswa dalam penguatan pendidikan karakterKata kunci: buku teks IPA SMP, nilai karakter
The capability of minor quaternary benzophenanthridine alkaloids to inhibit TNF-α secretion and cyclooxygenase activity
Authors: Hošek Jan , Šebrlová Kristýna , Kaucká Petra , Peš Ondřej , Táborská Eva
Published: November 2017

Quaternary benzophenanthridine alkaloids are known to have a wide range of biological effects, including antimicrobial, antifungal, anti-inflammatory, and antitumour activities. However, only sanguinarine and chelerythrine have been studied intensively. The aim of this study was to evaluate the anti-inflammatory potential of the five minor quaternary benzophenanthridine alkaloids sanguilutine, sanguirubine, chelirubine, chelilutine, and macarpine in vitro and to compare them with more thoroughly studied sanguinarine and chelerythrine. Before making cell-based assays, the cytotoxicity of the alkaloids was evaluated. The anti-inflammatory potential of the chosen alkaloids was evaluated as for their ability to modulate the lipopolysaccharide-induced secretion of tumour necrosis factor α (TNF-α) in the macrophage-like cell line THP-1. The cyclooxygenase (COX)-1 and COX-2 inhibitory activities were also measured. The results indicate that the presence of a methylenedioxy ring attached at carbon (C)7-C8 is important for reducing the secretion of TNF-α. Interestingly, this effect did not show a simple dependence on concentration. The selected alkaloids showed little or no anti-COX activity. The results obtained from the present experiments may provide additional information useful in understanding the structure-to-activity relationship of the quaternary benzophenanthridine alkaloids. The anti-inflammatory potential and the cytotoxic effect are driven by the presence of a methylenedioxy ring attached at C7-C8 and C2-C3, respectively.
Metabolic and mineral conditions of retained placenta in highly productive dairy cows: pathogenesis, diagnostics and prevention – a review
Authors: Mordak Ryszard , Nicpoń Józef , Illek Josef
Published: November 2017

The time around calving in highly productive dairy cows is a critical period in terms of their metabolism, which is connected with high demands of the foetus as well as with the onset of lactation. Retained placenta in cows may have multifactorial aetiology, but in herds which are free from infectious diseases, the most important reasons are; periparturient metabolic changes and disturbances to the internal balance and stress. During the periparturient period, the most important factor causing immune suppression and hypotony of uterus in cows is metabolic stress due to hormonal and nutritional factors, including metabolic fluctuations, negative energy balance, as well as shortage of proteins, minerals, vitamins and antioxidants. This metabolic stress as a result of an imbalance in the internal metabolic homeostasis activates the hypothalamic-pituitary-adrenocortical axis (HPA) and increases serum corticosterid (cortisol) concentration, especially on the day of calving. Cortisol is a powerful immune suppressive factor that causes depression of leukocyte proliferation and their functions. The periparturient metabolic stress may also stimulate the production of catecholamines, especially adrenalin. Elevated levels of adrenalin activate adrenoreceptors of the myometrium, which in turn cause hypotony or atony of the uterus at calving in cows. Elevated levels of cortisol and adrenalin may significantly inhibit the rejection and expulsion of foetal membranes in cows, resulting in an increased incidence of their retention. These important mechanisms for placental retention in highly productive dairy cows often have primary nutritional metabolic aetiology, but they also occur during secondary metabolic disturbances and metabolic stress during calving. This metabolic and immunological aetiology and pathogenesis of retained placenta usually occur in highly productive periparturient cows on dairy farms in the absence of bovine infectious diseases, which can couse placentitis, stillbirth and the infectious origin of foetal membrane retention. The paper presents the most important metabolic, mineral and immunological disturbances as conditions for retained placenta in dairy cows. It also shows different methods of herd monitoring, important examples of clinical and laboratory diagnostics, and methods of nutritional and veterinary prevention of this health problem in dairy cows.
Parenteral iron administration in suckling piglets – a review
Authors: Svoboda Martin , Vaňhara Jonáš , Berlinská Jana
Published: November 2017

Parenteral iron administration has been a common practice for the prevention of iron deficiency in newborn piglets. The efficacy and safety of this method require reexamination due to the introduction of new genetic lines and management changes in swine production. The aim of this article was to review current knowledge on this method of anaemia prevention in piglets. Iron requirements, iron sources, and the mode of action, dosage, and negative effects of iron dextran injection are discussed. The paper also reviews methods for evaluating the efficacy of iron administration in piglets.
Effects of glycerol concentration on the motility of equine spermatozoa after thawing
Authors: Mráčková Miroslava , Horáčková Eliška , Vyvial Michal , Vinkler Antonín , Krisová Šárka , Bodeček Štěpán , Sedlinská Markéta
Published: November 2017

The aim of this study was to evaluate the effect of different glycerol concentrations on stallion sperm motility after thawing. For statistical analysis 228 ejaculates were used. The semen was filtrated to remove gel fraction; macroscopic and microscopic evaluation was done. After evaluation the ejaculates were centrifuged, the supernatant was removed and the spermatozoa were re-suspended in French diluent with different concentrations of glycerol (2.0; 2.5; 4.0 and 6.0%). The choice of concentration of glycerol for a particular ejaculate was completely random. The spermatozoa were packed into 0.5 ml straws and placed for 2 h in a fridge (4 °C). Then the straws were placed in liquid nitrogen vapor (-80 to -100 °C) and after 10 min plunged into liquid nitrogen and stored at -196 °C for at least 48 h. The selected straws were individually thawed in a 38 °C water bath for 30 s prior to post-freezing analysis. Two progressive motilities using phase contrast microscopy (magnification × 400) were recorded: motility II immediately after thawing and motility III after 2 h incubation in a 38 °C water bath. The Spearmen/Kendall rang correlation test was selected to prove whether there is a correlation between the selected indices (glycerol concentration and motility II and motility III). Nonparametric multiple group analysis (Steel-Dwass test) was applied for finding the differences between groups. The Spearman/Kendall rang correlation proved a relationship between motility II and glycerol concentration. It can be stated that in this study the best glycerol concentration for freezing equine spermatozoa is with a concentration of 4.0% glycerol.
Leiomyosarcoma of the ovary in a young female guinea pig – a case report
Authors: Lukášová Radka , Bártová Eva , Škorič Miša
Published: November 2017

This case report presents a one-year old pet female smooth-coated guinea pig with a diagnosis of leiomyosarcoma of the left ovary with locally aggressive behaviour. The animal had been showing lethargy and alopetic dermatosis for a few weeks. The mass in the area of the left ovary was suspected based on palpation, x-ray, ultrasonography of the abdominal cavity and the presence of the mass in the abdomen was confirmed by probatory laparotomy. Since the lesion was inoperable due to its size and infiltrative growth, the animal was euthanized. Leiomyosarcoma of the ovary with infiltrative growth into spleen and pancreas was diagnosed based on histopathological examination and the diagnosis was proved by immunohistochemical staining for the presence of smooth muscle actin. This is the first described case of this type of tumour in young intact female guinea pig. The case report could contribute to better understanding and knowledge of the occurrence of neoplastic changes of the ovary in guinea pigs especially for better treatment management and prevention of reproductive tract diseases.
Impacto de la migración del padre en los jóvenes: cuando la migración se convierte en abandono
Authors: Obregón-Velasco Nydia , Rivera-Heredia María Elena
Published: November 2017

La búsqueda del bienestar de la familia es una de las principales causas de la migración de México a Estados Unidos; los padres se ausentan para incrementar la calidad de vida de los integrantes de la familia. Sin embargo, esa ausencia física con frecuencia va acompañada de distanciamiento emocional, que puede acrecentarse al paso del tiempo. El objetivo de la presente investigación fue analizar el impacto de la ausencia y abandono que refieren los y las jóvenes de Cuitzeo, Michoacán, México, ante la migración de su padre. Para ello, se visitó una escuela pública de nivel medio superior, donde asistían 13 estudiantes que presentaban esta situación. Las técnicas de recolección de datos fueron entrevistas a profundidad, observación participante, charlas, talleres y apoyo psicológico, realizados dentro de la comunidad. Se encontró que las y los jóvenes describieron la partida de su padre en un primer momento con una perspectiva esperanzadora; sin embargo, al pasar el tiempo y darse cuenta de que su padre terminó por ausentarse, no solo física, sino también emocionalmente de la familia, los jóvenes interpretaron y significaron esa experiencia como una forma de abandono. Todos los participantes refirieron impactos negativos relacionados con la experiencia de migración de su padre, considerando su ausencia y posterior abandono como una forma de violencia por omisión de cuidados que está enraizada en las construcciones de género, donde a los varones de esa localidad se les fomenta su rol como proveedores de la economía y como padres poco involucrados en el cuidado y atención a los hijos. Archivo XML (SciELO)
Estructura factorial y consistencia interna del cuestionario de fantasías y situaciones sexuales en estudiantes de psicología de Monterrey, Nuevo León, MéxicoArchivo XML (SciELO)
Authors: Moral-de-la-Rubia José
Published: November 2017

Aunque existe un cuestionario de fantasías sexuales integrado por 18 contenidos y 10 situaciones con validez de contenido y especificidad para estudiantes de psicología, se desconocen sus propiedades psicométricas. El objetivo de esta investigación fue determinar su consistencia interna, estructura factorial e invarianza entre sexos. Se empleó una estrategia de muestreo por cuotas no proporcionales de sexo de 400 estudiantes de psicología de la Universidad Autónoma de Nuevo León, campus Monterrey, en México. Los ítems de contenidos tuvieron consistencia interna buena y su modelo de dos factores mostró buen ajuste en la muestra conjunta, pero propiedades de invarianza pobres entre sexos. El primer factor fue sobre fantasías heterosexuales y el segundo sobre fantasías homosexuales y pasividad. En mujeres el modelo fue unidimensional. Los ítems de situaciones tuvieron consistencia interna excelente y su modelo unidimensional mostró buen ajuste y propiedades de invarianza entre sexos aceptables. Se concluye que el cuestionario posee consistencia interna y validez estructural, aunque el modelo bifactorial de contenidos no tenga invarianza entre sexos.Archivo XML (SciELO)
Efecto de la transglutaminasa microbiana sobre las propiedades mecánicas de geles de carne de jaiba cocida
Authors: Hernández-Robledo Verónica , Uresti-Marín Rocío M , Martínez-Maldonado Miguel Ángel , Velazquez Gonzalo
Published: November 2017

La carne de jaiba cocida sometida a un ciclo de tres lavados puede gelificar, produciendo geles débiles. La adición de transglutaminasa (TGasa) microbiana puede mejorar las propiedades mecánicas de estos geles. El objetivo del presente trabajo fue determinar si la aplicación de un solo ciclo de lavado, combinado con la adición de la enzima TGasa microbiana, mejora las propiedades mecánicas de los geles de jaiba. La jaiba azul (Callinectes sapidus) se obtuvo de la Laguna Madre, Tamaulipas, México y se coció a 120 ºC por 20 min para separar manualmente la carne del exoesqueleto. La carne cocida se homogenizó en una cortadora de carne y se mezcló con 0 (control), 0.5 % y 1 % de TGasa microbiana. Posteriormente, se introdujo en tubos de acero inoxidable y se incubó a 40 ºC por 30 min antes de cocerla a 90 ºC por 15 min. También se obtuvieron geles mediante la cocción directa a 90 ºC por 15 min, sin incubación previa. Se evaluaron los cambios en el análisis del perfil de textura (APT) de los geles obtenidos. El empleo de un solo ciclo de lavado de la carne de jaiba fue suficiente para mejorar las propiedades mecánicas de los geles de jaiba y la adición de TGasa microbiana incrementó esas propiedades, especialmente cuando los geles se incubaron a 40 ºC antes de cocerlos a 90 ºC. Los resultados obtenidos indicaron que es factible obtener productos reestructurados a partir de carne de jaiba previamente cocida, si se emplea un solo ciclo de lavado y se adiciona la enzima TGasa microbiana.Archivo XML (SciELO)
Modelación matemática de las cinéticas de hidratación a diferentes temperaturas de cuatro variedades de frijol (Phaseolus vulgaris L) producidas en México
Authors: Ulloa José Armando , Rosas-Ulloa Petra , Ramírez-Ramírez José Carmen , Ulloa-Rangel Blanca Estela
Published: November 2017

La absorción de agua en las leguminosas durante el remojo afecta las subsecuentes operaciones de procesamiento y la calidad de producto final. Por ello, el modelado de transferencia de agua en las semillas durante el remojo resulta importante. En este trabajo se estudiaron las cinéticas de absorción de agua en frijol (Phaseolus vulgaris L), de las variedades Azufrado, Peruano bola, Mayacoba y Canario, a tres temperaturas (25 °C, 40 °C y 55 °C), a través de los modelos de Peleg y Sigmoidal. El tiempo para lograr el contenido de humedad de equilibrio dependió de la variedad de frijol y la temperatura de remojo, el cual puede reducirse desde un 45.5 % (Peruano bola), hasta un 60.9 % (Canario), elevando la temperatura de remojo de 25 ºC a 55 °C.  De acuerdo a los indicadores estadísticos de coeficiente de determinación, raíz cuadrada del error medio y chi-cuadrada, el modelo con mejor calidad de ajuste en la generalidad de las variedades y temperaturas de remojo fue el de Peleg. Los valores de k1 del modelo de Peleg para las distintas variedades de frijol estudiadas contra el recíproco de la temperatura se ajustaron adecuadamente a la ecuación de Arrhernius (R2 = 0.9190 - 0.9980). La energía de activación para la hidratación varió de 18.41 kJ / mol-1 a 50.18 kJ / mol-1, según la variedad de frijol. Los resultados obtenidos podrían ser útiles en futuros trabajos para el desarrollo de productos, propiedades de alimentos y diseño de procesos de la industria del procesamiento de frijol. Archivo XML (SciELO)
Ichneumonidae (Hymenoptera: Ichneumonoidea) de Escárcega, Campeche, México: nuevos registros de especies
Authors: García-Ramírez María De Jesús , Ruíz-Cancino Enrique , Coronado-Blanco Juana María , Khalaim Andrey Ivanovich
Published: November 2017

Los icneumónidos son avispas parasitoides importantes en la regulación de poblaciones de otros insectos y arañas en la naturaleza. En México se han reportado 1 301 especies de la familia Ichneumonidae, sin embargo, algunos estados del país, como Campeche, han sido poco estudiados. El objetivo de este estudio fue establecer nuevos registros de especies de icneumónidos en Escárcega, Campeche. Los ejemplares fueron capturados del 6 al 20 de mayo de 2014, con dos trampas Malaise, en la Unidad de Manejo y Conservación de Vida Silvestre (UMA) “Casados Ranch”. La determinación taxonómica se llevó a cabo en el Museo de Insectos de la Facultad de Ingeniería y Ciencias de la Universidad Autónoma de Tamaulipas; los organismos identificados se depositaron en la Colección de Insectos de la Universidad Autónoma de Campeche en Escárcega. Se determinaron 10 subfamilias, 17 géneros y 10 especies, de los cuales 7 subfamilias, 16 géneros (excluyendo a Eiphosoma) y 10 especies son nuevos registros para Campeche, lo que acrecentó el conocimiento de las especies de Ichneumonidae en esa región.
Effect of frying fat substitution by vegetable oil and energy concentration on diets for productive performance of broilers
Authors: Salinas-Chavira Jaime , Orduña-Hernández Héctor Manuel , Montaño-Gómez Martín Francisco , Infante-Rodríguez Fidel , Manríquez-Núñez Olga Maritza , Vázquez-Sauceda María De la Luz , Yado-Puente Rolando
Published: November 2017

En la dieta de pollos de engorde se adicionan lípidos para mejorar su eficiencia productiva, generalmente grasa de fritura (GF), reciclada de restaurantes, por tener menor costo que el aceite vegetal (AV). El objetivo de este trabajo fue evaluar el efecto de la sustitución de GF por AV en dietas estándar (DEE) y dietas altas en energía (DAE) sobre el comportamiento productivo de pollos de engorde. Se alimentó durante 42 d a 200 pollos mixtos ROSS, de un día de edad y peso promedio de 37.2 g ± 0.89 g. El estudio se realizó en dos fases de 21 d: inicio y acabado. Se usó un diseño experimental al azar con arreglo factorial 2 x 2 con la fuente de lípidos (GF y AV), laconcentración de energía (DEE y DAE) y su interacción como efectos principales. La energía metabolizable en la fase de inicio fue 2 994 kcal/kg y 3 013 kcal/kg, y en la fase de acabado fue 3 081 kcal/kg y 3 111 kcal/kg en DEE y DAE, respectivamente. La fuente de lípidos no influyó (P > 0.05) sobre las variables de estudio. En la fase de inicio, los pollos alimentados con la DAE ganaron más peso y mostraron mejor conversión alimenticia (P < 0.05) que los pollos en la DEE, aunque el consumo de alimento fue similar (P > 0.05). En la fase de acabado, los pollos alimentados con la DAE ganaron más peso (P < 0.05) y consumieron más alimento (P < 0.05) que los pollos alimentados con la DEE. No se observó efecto de la concentración de energía sobre la conversión alimenticia (P > 0.05). Se concluyó que la fuente de lípidos no influyó en los parámetros productivos, pero el incremento en concentración energética mejoró significativamente el comportamiento productivo de los pollos de engorde. Archivo XML (SciELO)
Contaminación por ruido en carreteras de acceso a la ciudad de Chihuahua
Authors: Olague-Caballero Cecilia Olivia , Wenglas-Lara Gilberto , Duarte-Rodríguez Jose Guillermo
Published: November 2017

La contaminación por ruido es un problema de continua preocupación pública, por lo que se dedican esfuerzos importantes para controlarlo. El tráfico vehicular es la mayor fuente de contaminación acústica en las áreas urbanas. Las principales variables que inciden en el ruido urbano son el tráfico rodado y su impacto según el uso de suelo colindante. El objetivo de esta investigación fue determinar el nivel de ruido que se genera en tres vías de alto tráfico vehicular en la ciudad de Chihuahua, Chihuahua, México: Chihuahua a Hermosillo, Sonora; Chihuahua a Ciudad Juárez, Chihuahua; y Chihuahua a Delicias, Chihuahua. Para ello, se seleccionaron 64 puntos de estudio. El nivel de ruido fue medido durante los periodos de máxima demanda vehicular. El índice utilizado fue el nivel de presión sonora continuo equivalente (Leq dB [A]), y la unidad de medida fue el decibelio (dB). Los resultados muestran que el nivel de ruido varió de 67.7 dB (A) a 75.5 dB (A), valores que se encuentran por arriba de los niveles de ruido permisibles, de acuerdo a los estándares internacionales. Se sugiere el uso de bermas, la optimización de la superficie de rodamiento y barreras de sonido como alternativas que se consideran adecuadas para mitigar el ruido en cada punto en que se exceden los niveles permitidos máximos en el día.