bluuebunny/crossref_metadata_2025 huggingface dataset:
A ilha de calor e a umidade relativa em Aracaju-Sergipe (Brasil). Intensidade e comportamento intradiurno
Authors: Anjos Max Wendell Batista dos , Ganho Nuno , Araújo Hélio Mário de
Published: July 2015

Este trabalho tem por objetivo analisar os contrastes topoclimáticos no espaço urbano e periurbano da cidade de Aracaju. Isto foi possível mediante o confronto dos dados de temperatura e umidade relativa entre as estações meteorológicas urbanas com a estação meteorológica de caráter mais periurbano. As frequências relativas de ocorrência de diferenças de temperatura máxima maiores que zero (%>0), superaram os 96% no centro cidade e com frequências de 100% durante os finais da manhã até parte da noite. Além disso, a estação do centro registrou em média 3,6ºC maior que a estação do aeroporto. Os resultados indicam evidências significativas das diferenças térmica e higrométrica entre a área urbana e periurbana, o que leva a fortes indícios de ocorrência da ilha de calor em Aracaju.
La alimentación en los viajes espaciales tripulados: desde el Programa Gemini hasta la ISS/Shuttle
Authors: Gomar-Serrano Juan Antonio , Soriano -Del Castillo José Miguel , Bilbao Cercós Laura
Published: July 2015

Los alimentos espaciales han tenido una gran importancia en el desarrollo de las misiones espaciales tripuladas ya que constituyen la única fuente de energía y nutrientes para el ser humano fuera del planeta Tierra. Dichos alimentos han experimentado una gran evolución desde el inicio del Programa Mercury hasta las actuales misiones a la International Space Station (ISS). En un primer momento eran diseñados para ofrecer una gran densidad energética y nutritiva y actualmente se da prioridad a las características organolépticas y psicológicas, ya que contribuyen a un mayor consumo y un mejor estado nutricional de los astronautas. El objetivo del presente estudio es hacer un análisis retrospectivo de las publicaciones hasta la fecha sobre alimentos espaciales para ver si los disponibles actualmente son apropiados para mantener un buen estado nutricional de los astronautas en el marco de una misión espacial tripulada al espacio profundo. Para la búsqueda de estos artículos se ha utilizado la base de datos de PubMed y de la web del Jet Propulsion Laboratory de la National Aeronautics and Space Administration (NASA), de los artículos publicados hasta el año 2012.
Kinetic Dynamics in Cellulase Hydrolysis of C.I. Sulfur Black 1 Dyed Cotton Fabric
Authors: Yao Jiming , Dou Chunxiao , Wei Sainan , Zheng Mingyuan
Published: July 2015

The enzymatic hydrolysis of cellulose by cellulase is one of the major steps in the processing of cellulosic fiber based textiles. The influence of dyes on cellulase performance for cellulosic fabrics has not been conclusively studied. However, cellulase inhibition by sulfur dyes in fiber was observed to some extent. In this paper, undyed and C.I. Sulfur Black 1 dyed cotton fabrics were both treated with acid cellulase L4. The hairiness removal percentage, protein adsorption on the fabric, and glucose content in the treatment bath were monitored to explore the interaction between cellulase and sulfur dyed fabric. It was concluded that dyed fabric had higher protein adsorption, and lower hairiness removal percentage and glucose content, than that of the undyed fabric.
Flocked Bio-Conversion Media for Ammonia/ Water Bioremediation I: Materials and Experimental Methodology
Authors: Kim Yong K. , Lewis Armand F. , Sun Yu
Published: July 2015

Flocked textile surfaces have been investigated as high surface area, bio-filter materials for bioremediation of low concentration ammonia contaminated water. These conditions are encountered in fish-growing tanks used in commercial closed-system (recirculating water) aquaculture (fish farming). Nitrosomas and Nitrobacter bacterial species were used for bio-conversion. Ammonia depletion rates (ADR) for various commercial and experimental bio-media materials were experimentally determined. Overall, ADR values of various bio-media materials were found to 1) be 1.5x and higher for flocked surface bio-media than for non-flocked bio-media, 2) decrease as the flow rate of ammonia-polluted water through the bio-media increases (this effect was not linear), and 3) generally increase as the bulk surface area per volume of the bio-media increases. These observations suggest opportunities for further study of flocked bio-media materials.
A Construção do Projeto Político Pedagógico: Contribuições da Pesquisa-Ação Colaborativa
Authors: Sarmento Dirléia Fanfa , Casagrande Cledes Antônio
Published: July 2015

O texto analisa o processo constitutivo do Projeto Político Pedagógico (PPP) de uma Secretaria Municipal de Educação, situada no Estado do Rio Grande do Sul (Brasil), enfatizando as contribuições da pesquisa-ação colaborativa enquanto postura que alimenta o compromisso político, o pensamento crítico e as relações cooperativas para a constituição de comunidades de aprendizagem. Articula as reflexões oriundas de uma análise meta-analítica do próprio processo investigativo com a constituição do Projeto em tela, tendo como protagonistas os profissionais da educação que atuam na Secretaria de Educação. Os achados (decorrentes da análise do conteúdo de documentos, dos registros de observações dos encontros formativos no Diário de Campo e das entrevistas) sinalizam para as seguintes contribuições da pesquisa-ação colaborativa para o processo em foco: a) o empoderamento e o protagonismo dos sujeitos envolvidos na construção do PPP; b) a reflexão sobre a própria práxis; c) a (re)construção de conceitos e a revisão de concepções através da investigação-ação-formação; d) a possibilidade de uma incursão aprofundada no fenômeno investigado na medida em que se dá continuidade ao movimento espiralado típico da pesquisa-ação. Destacamos a questão temporal da pesquisa, pois quando almejamos transformações é necessário um processo longo e constante de reflexão-ação-crítica. Assim, os impactos decorrentes da pesquisa-ação não são imediatos, mas expectáveis com o decorrer do tempo.  Tais impactos podem se constituir em fonte geradora de novas investigações.
FORMAÇÃO DE PROFESSORES DE EDUCAÇÃO INFANTIL: PERSPECTIVAS PARA PROJETOS DE FORMAÇÃO E DE SUPERVISÃO
Authors: Da Silva Rosangela Aparecida Galdi , Garms Gilza Maria Zauhy
Published: July 2015

Este texto discute o tema formação inicial e sintetiza pesquisa de Mestrado do Programa de Pós-Graduação em Educação da Faculdade de Ciências e Tecnologia – UNESP. O objetivo era investigar a problemática da formação inicial do professor de Educação Infantil no Curso de Pedagogia, a partir da Resolução CNE/CP nº. 1/2006. Como pesquisa bibliográfica e documental, com abordagem qualitativa, identificou os desafios postos aos profissionais e as políticas públicas e, ainda, a precariedade do Curso de Pedagogia. Além disso, evidenciou as contribuições das pesquisas acadêmicas no estado do conhecimento sobre Educação Infantil. Como resultado identificou necessidades formativas e indicou pressupostos para iluminar uma discussão curricular no que se refere à formação dos professores de Educação Infantil, com perspectivas para a realização de projetos de formação e de supervisão. http://dx.doi.org/10.14572/nuances.v26i0.2776
A BRINCADEIRA NA EDUCAÇÃO INFANTIL: IMPLICAÇÕES TEÓRICAS E PRÁTICAS PARA A INTERVENÇÃO DOCENTE
Authors: Silva José Ricardo , Lima José Milton de
Published: July 2015

O objetivo dessa pesquisa foi conhecer e intervir sobre a concepção e a prática de uma professora no emprego da brincadeira, em uma instituição de Educação Infantil. Utilizando a observação e a entrevista semiestruturada, buscamos identificar a concepção e a prática relacionada à brincadeira que os participantes da pesquisa apresentavam. Em seguida foram realizadas intervenções teóricas e práticas tomando como base a perspectiva histórico-cultural. A metodologia utilizada foi a pesquisa-intervenção, por possibilitar a transformação no lócus da pesquisa. A investigação apontou a presença da brincadeira espontânea e brincadeiras complexas nas propostas da educadora. As intervenções demonstraram a importância da atuação docente na ampliação da cultura lúdica das crianças e na qualidade do brincar. Segundo a educadora, as intervenções contribuíram na mudança de sua concepção em relação à brincadeira, no entanto, ainda apontou empecilhos que dificultam o emprego dessa atividade no dia a dia. http://dx.doi.org/10.14572/nuances.v26i0.2784
PERCEPÇÕES DOS PROFESSORES DOS ANOS INICIAIS DE ÁLVARES MACHADO SOBRE A UTILIZAÇÃO DOS SISTEMAS APOSTILADOS DE ENSINO
Authors: Da Silva Edimar Aparecido , Ferrari Leite Yoshie Ussami
Published: July 2015

O artigo, parte da dissertação de mestrado “Sistemas apostilados de ensinos: as percepções dos professores dos anos iniciais do Ensino Fundamental de Álvares Machado-SP” analisa as percepções dos professores dos Anos Iniciais do Ensino Fundamental, da Rede Municipal de Ensino de Álvares Machado-SP, sobre a utilização de um Sistema Apostilado de Ensino (SAE) na sala de aula. Sob uma abordagem qualitativa, a pesquisa constituiu-se como um estudo de caso, e a coleta de dados foi feita por meio de questionários aplicados a trinta e seis professores e interpretados metodologicamente a partir da “análise de conteúdo”. Os resultados indicaram que a maioria dos professores tem uma percepção positiva em relação à utilização do SAE. Recomenda-se aos elaboradores das políticas educacionais municipais, aos conselhos municipais, às instituições formadoras, aos gestores escolares e aos professores, que fortaleçam os espaços de discussões e debates para melhor definir as políticas públicas municipais, refletindo sobre as parcerias público-privadas. http://dx.doi.org/10.14572/nuances.v26i0.2819
PROCESSO DE INCLUSÃO ESCOLAR NO ENSINO DE FÍSICA: AS CONTRIBUIÇÕES DO USO DE OBJETOS EDUCACIONAIS
Authors: Melques Paula Mesquita , Junior Klaus Schlünzen , Araya Ana Maria Osorio
Published: July 2015

No presente trabalho é apresentada uma pesquisa de Mestrado que teve como objetivo investigar a contribuição do uso de Objetos Educacionais (OE) nas aulas de Física ao processo de inclusão. Para tanto, buscou-se estudar como os OE podem ser inseridos nas aulas de Física; analisar e selecionar OE que contemplam os conteúdos de Física e que podem contribuir com o processo de inclusão escolar; e ainda, investigar se os OE selecionados contribuem para a inclusão do aluno com deficiência intelectual no processo de ensino e aprendizagem de Física. A partir de uma abordagem qualitativa e com enfoque na pesquisa-intervenção, a pesquisa foi desenvolvida em uma escola da rede pública estadual de ensino de Presidente Prudente/SP. Entre os resultados alcançados, concluiu-se que o uso de OE contribuiu para o processo de inclusão escolar no ensino de Física no contexto desta pesquisa. http://dx.doi.org/10.14572/nuances.v26i0.2820
FUNDAMENTOS EPISTEMOLÓGIOS PARA UMA PESQUISA EM EDUCAÇÃO: APROXIMAÇÕES AO MATERIALISMO HISTÓRICO DIALÉTICO
Authors: Pelegrini Anderson De Oliveira , Viotto Filho Irineu Aliprando Tuim
Published: July 2015

Objetiva-se apresentar aspectos teórico-filosóficos e epistemológicos que fundamentaram uma pesquisa que acompanhou e analisou um Projeto de Intervenção, realizado junto a alunos de uma Escola Municipal de Ensino Fundamental de Presidente Prudente/SP, cuja finalidade situava-se em compreender o movimento histórico-social de construção de relações sociais no interior da escola e seus desdobramentos no processo de desenvolvimento da consciência dos estudantes, considerando os aportes do materialismo histórico dialético e da teoria histórico-cultural. Os resultados do trabalho indicaram possibilidades concretas de análise da realidade nas suas múltiplas determinações, em conformidade com os pressupostos do método materialista histórico dialético, considerando o movimento histórico-social de constituição das relações sociais na escola, assim como a identificação dos elementos teóricos de construção da consciência dos participantes do processo de intervenção. http://dx.doi.org/10.14572/nuances.v26i0.2824
The status of adolescent medicine: building a global adolescent workforce
Authors: Lee Lana , Upadhya Krishna K. , Matson Pamela A. , Adger Hoover , Trent Maria E.
Published: July 2015

Remarkable public health achievements to reduce infant and child mortality as well as improve the health and well-being of children worldwide have successfully resulted in increased survival and a growing population of young people aged 10–24 years. Population trends indicate that the current generation of 1.8 billion young people is the largest in history. However, there is a scarcity of dedicated resources available to effectively meet the health needs of adolescents and young adults worldwide. Growing recognition of the pivotal roles young people play in the cultures, societies, and countries in which they live has spurred an expanding global movement to address the needs of this special population. Building an effective global workforce of highly-skilled adolescent health professionals who understand the unique biological, psychological, behavioral, social, and environmental factors that affect the health of adolescents is a critical step in addressing the health needs of the growing cohort of young people. In this review, we aim to: 1) define a global assessment of the health needs for adolescents around the world; 2) describe examples of current training programs and requirements in adolescent medicine; 3) identify existing gaps and barriers to develop an effective adolescent health workforce; and 4) develop a call for targeted actions to build capacity of the adolescent health workforce, broaden culturally relevant research and evidence-based intervention strategies, and reinforce existing interdisciplinary global networks of youth advocates and adolescent health professionals to maximize the opportunities for training, research, and care delivery.
The Flipped Classroom: Fertile Ground for Nursing Education Research
Authors: Bernard Jean S.
Published: July 2015

In the flipped classroom (FC) students view pre-recorded lectures or complete pre-class assignments to learn foundational concepts. Class time involves problem-solving and application activities that cultivate higher-level cognitive skills. A systematic, analytical literature review was conducted to explore the FC’s current state of the science within higher education. Examination of this model’s definition and measures of student performance, student and faculty perceptions revealed an ill-defined educational approach. Few studies confirmed FC effectiveness; many lacked rigorous design, randomized samples, or control of extraneous variables. Few researchers conducted longitudinal studies to determine sufficiently trends related to FC practice. This study proves relevant to nurse educators transitioning from traditional teaching paradigms to learner-centered models, and provides insight from faculty teaching across disciplines around the world. It reveals pertinent findings and identifies current knowledge gaps that call for further inquiry.
DBSCANI: Noise-Resistant Method for Missing Value Imputation
Authors: Purwar Archana , Singh Sandeep Kumar
Published: July 2015

The quality of data is an important task in the data mining. The validity of mining algorithms is reduced if data is not of good quality. The quality of data can be assessed in terms of missing values (MV) as well as noise present in the data set. Various imputation techniques have been studied in MV study, but little attention has been given on noise in earlier work. Moreover, to the best of knowledge, no one has used density-based spatial clustering of applications with noise (DBSCAN) clustering for MV imputation. This paper proposes a novel technique density-based imputation (DBSCANI) built on density-based clustering to deal with incomplete values in the presence of noise. Density-based clustering algorithm proposed by Kriegal groups the objects according to their density in spatial data bases. The high-density regions are known as clusters, and the low-density regions refer to the noise objects in the data set. A lot of experiments have been performed on the Iris data set from life science domain and Jain’s (2D) data set from shape data sets. The performance of the proposed method is evaluated using root mean square error (RMSE) as well as it is compared with existing K-means imputation (KMI). Results show that our method is more noise resistant than KMI on data sets used under study.
Influence of the body weight on the onset and progression of puberty in boys
Authors: Tomova Analia , Robeva Ralitsa , Kumanov Philip
Published: July 2015

Unlike in girls, the data on the relationship between pubertal development and body weight in boys are controversial.

We measured the height, body weight, body mass index (BMI), pubic hair stages, testicular volume, penis length and circumference of 4030 boys, aged between 7 and 19 years. According to their body weight, the investigated children and adolescents were divided in four groups at each age: underweight boys (BMI <12th percentile), boys with normal weight (12th–84.99th percentile), overweight boys (85th–94.99th percentile) and boys with obesity (BMI ≥95th percentile), and their data were compared.

The onset of puberty occurred when the boys’ weight gained 40.33±9.03 kg (median 39.00) and BMI was 18.62±3.12 kg/m

The onset and progression of puberty in boys are in a significant positive relationship with weight and BMI. Moreover, in the overweight boys pubertal development begins and comes to the late stage earlier in comparison with normal weight children, whereas in those who are underweight a delay at every stage of the development is observed.
Commissive and Expressive Illocutionary Acts in Political Discourse
Authors: Mišić Ilić Biljana , Radulović Milica
Published: July 2015

Political discourse is primarily identified as political action, the discourse of deliberating which course of action to follow in accordance with specific political goals (Fairclough and Fairclough 2012: 1). A pragmatic analysis of various sub-genres of political discourse can identify the preference for particular speech acts. The first aim of this paper is to analyze commissive and expressive illocutionary acts in political speeches, as indicators of personal involvement of political speakers, notorious for vagueness and avoiding commitment. A corpus of Serbian, American and British political speeches that address the issue of economic standard of living has been examined to identify commissive illocutionary acts as indicators of politicians’ explicit commitment to a chosen course of action, and expressive illocutionary acts as indicators of politicians’ explicit attitudes to their own or other politicians’ chosen practices. The analysis classifies subtypes of commissives and expressives in the corpus and identifies illocutionary force indicating devices (IFIDs) that constitute them in English and in Serbian, after which the resulting classifications are compared and contrasted. The research results are aimed at explaining the hypothesis that a specific use/lack of commissives and expressives can be the politician’s strategy for adding credibility to their speeches, and in that way, swaying public opinion to serve the politician’s interest; conversely, establishing the relation between the use/lack of these illocutionary acts and the politician’s commitment to actions can be a method for exposing the politician’s lack of credibility and accountability.
Affordances and constraints: Second language learning in cleaning work
Authors: Strömmer Maiju
Published: July 2015

This paper examines opportunities for language learning in a cleaning job, which is a typical entry-level job for immigrants. An ethnographic case study approach is taken to investigate examples of the conditions that allow or prevent language learning for the focal participant, a sub-Saharan man who works as a cleaner in Finland. This case illustrates on a micro-scale the impact of the new economy on a worker in a company that has outsourced its cleaning services. Theoretically and methodologically, the study applies van Lier’s (
A Peircean typology of cultural prime symbols: Culture as category
Authors: Bonta Steven
Published: July 2015

Oswald Spengler first showed that every macroculture can be conceived of as an accretion of signs representing in various contexts a single abstract Prime Symbol. But this semiotic model of culture is not confined to the so-called “great civilizations”; it is applicable to every culture. In seeking a typology of Prime Symbols (and hence, a semiotic typology of cultures), we show that that the Peircean Categories Firstness, Secondness, and Thirdness (including the “degenerate” Categories Firstness of Secondness, Firstness of Thirdness, and Secondness of Thirdness) are exemplified in the great range of cultural semiotic types, and that, because of their universality and generality, these Categories are the best semiotic lens through which cultural Prime Symbols can be understood.
Transcriptomic Analysis of Musca domestica to Reveal Key Genes of the Prophenoloxidase-Activating System
Authors: Li Dianxiang , Liang Yongli , Wang Xianwei , Wang Lei , Qi Mei , Yu Yang , Luan Yuanyuan
Published: July 2015

The proPO system regulates melanization in arthropods. However, the genes that are involved in the proPO system in housefly Musca domestica remain unclear. Thus, this study analyzed the combined transcriptome obtained from M. domestica larvae, pupae, and adults that were either normal or bacteria-challenged by an Escherichia coli and Staphylococcus aureus mixture. A total of 54,821,138 clean reads (4.93 Gb) were yielded by Illumina sequencing, which were de novo assembled into 89,842 unigenes. Of the 89,842 unigenes, based on a similarity search with known genes in other insects, 24 putative genes related to the proPO system were identified. Eight of the identified genes encoded for peptidoglycan recognition receptors, two encoded for prophenoloxidases, three encoded for prophenoloxidase-activating enzymes, and 11 encoded for serine proteinase inhibitors. The expression levels of these identified genes were investigated by qRT-PCR assay, which were consistent with expected activation process of the proPO system, and their activation functions were confirmed by the measurement of phenoloxidase activity in bacteria-infected larvae after proPO antibody blockage, suggesting these candidate genes might have potentially different roles in the activation of proPO system. Collectively, this study has provided the comprehensive transcriptomic data of an insect and some fundamental basis toward achieving understanding of the activation mechanisms and immune functions of the proPO system in M. domestica.
Targeted Modification of Gene Function Exploiting Homology-Directed Repair of TALEN-Mediated Double-Strand Breaks in Barley
Authors: Budhagatapalli Nagaveni , Rutten Twan , Gurushidze Maia , Kumlehn Jochen , Hensel Goetz
Published: July 2015

Transcription activator-like effector nucleases open up new opportunities for targeted mutagenesis in eukaryotic genomes. Similar to zinc-finger nucleases, sequence-specific DNA-binding domains can be fused with effector domains like the nucleolytically active part of FokI to induce double-strand breaks and thereby modify the host genome on a predefined target site via nonhomologous end joining. More sophisticated applications of programmable endonucleases involve the use of a DNA repair template facilitating homology-directed repair (HDR) so as to create predefined rather than random DNA sequence modifications. The aim of this study was to demonstrate the feasibility of editing the barley genome by precisely modifying a defined target DNA sequence resulting in a predicted alteration of gene function. We used gfp-specific transcription activator-like effector nucleases along with a repair template that, via HDR, facilitates conversion of gfp into yfp, which is associated with a single amino acid exchange in the gene product. As a result of co-bombardment of leaf epidermis, we detected yellow fluorescent protein accumulation in about three of 100 mutated cells. The creation of a functional yfp gene via HDR was unambiguously confirmed by sequencing of the respective genomic site. In addition to the allele conversion accomplished in planta, a readily screenable marker system is introduced that might be useful for optimization approaches in the field of genome editing.
The Genetic Map Enters Its Second Century
Authors: Henikoff Steven
Published: July 2015

The Genetics Society of America (GSA) Medal is awarded to an individual for outstanding contributions to the field of genetics in the past 15 years. Recipients of the GSA Medal are recognized for elegant and highly meaningful contributions to modern genetics and exemplify the ingenuity of GSA members. The 2015 recipient is Steven Henikoff, whose achievements include major contributions to Drosophila genetics and epigenetics, Arabidopsis genetics and epigenetics, population and evolutionary genetics, genomic technologies, computational biology, and transcription and chromatin biology. Among these achievements, Henikoff elucidated the mechanism for position-effect variegation, revealed a central role for variant histones in nucleosome assembly at active genes, and provided new insights into genome evolution. He has also developed widely used computational tools for genome and protein analysis and new strategies for mapping chromatin-binding sites.
Science Translator: An Interview with Louisa Stark
Authors: Stark Louisa A
Published: July 2015

The Genetics Society of America’s Elizabeth W. Jones Award for Excellence in Education recognizes significant and sustained impact on genetics education. The 2015 awardee, Louisa Stark, has made a major impact on global access to genetics education through her work as director of the University of Utah Genetic Science Learning Center. The Center’s Learn.Genetics and Teach.Genetics websites are the most widely used online genetic education resources in the world. In 2014, they were visited by 18 million students, educators, scientists, and members of the public. With over 60 million page views annually, Learn.Genetics is among the most used sites on the Web.
Place and Role of Children’s Interests in Contemporary Educational Process / Mjesto i uloga dječjih interesa u suvremenom odgojno-obrazovnom procesu
Authors: Milić Saša , Gazivoda Nataša
Published: July 2015

The aim of this study was to determine the place and role of children's interests in the contemporary educational process. The paper is a synthesis of theoretical knowledge and the analysis of the results that we obtained in a research study. The study was conducted on a sample of 167 students, 165 teachers and 164 parents, adding up to a total of 496 respondents. In the study we used the descriptive method, interview as a research technique and questionnaire as a research instrument. The results showed that we inadequately incorporate the development of children's interests into the teaching process and do not encourage it.Key words: contents; learning; methods; teacher; teaching---Cilj ovog rada jest utvrditi mjesto i ulogu koju dječji interesi imaju u suvremenom odgojno-obrazovnom procesu. Rad predstavlja sintezu teorijskih spoznaja i analize rezultata do kojih smo došli provodeći istraživanje. Istraživanje je provedeno na uzorku od 167 učenika, 165 nastavnika i 164 roditelja, što ukupno čini 496 ispitanika. U istraživanju smo se koristili deskriptivnom metodom, anketiranjem kao istraživačkom tehnikom, odnosno anketnim upitnikom kao instrumentom istraživanja. Rezultati istraživanja su pokazali da se još uvijek u nedovoljnoj mjeri u nastavnom procesu ne inkorporira i ne potiče razvoj dječjih interesa.Ključne riječi: metode; nastava; nastavnik; sadržaji; učenje
Identification and Elimination of Several Misconceptions of University Level Students Regarding the Misconceptions in Science Course/Prepoznavanje i eliminacija nekih pogrešnih predodžbi koje imaju studenti u kolegiju Pogrešne predodžbe u prirodnim znanos
Authors: Dolu Gamze , Urek Handan
Published: July 2015

AbstractThe present study is based on identification and elimination of several misconceptions of university level students regarding chemistry topics. For this reason, the static-group pre-test-post-test design was implemented with 52 teacher candidates. Regarding the content of the study, the experimental group participants opted for “Misconceptions in Science” course whereas the control group selected “Physics in environment” course in terms of elective courses. Data was collected through a form which consisted of 3 open-ended statements during the research process. In addition, an evaluation form was prepared to determine the opinions of the experimental group on the course. As a result of the study, the pre-test analyses revealed several misconceptions which all the participants have, whereas the post-test results indicated that “Misconceptions in science” course was effective in the elimination of experimental group’s misconceptions. Also, the course was found to be necessary and efficient. Delayed post-test results justified the resistivity of the misconceptions of the experimental group members, although they had been performing their jobs as in-service science teachers.Key words: chemistry; conceptual change discussion.---SažetakOvo istraživanje temelji se na prepoznavanju i eliminaciji nekih pogrešnih predodžbi studenata o području kemije. Zbog toga je primijenjen i proveden dizajn s predtestom i posttestom na statičnoj skupini na uzorku od 52 buduća nastavnika. Što se tiče sadržaja istraživanja, ispitanici u eksperimentalnoj skupini odabrali su kolegij Pogrešne predodžbe u prirodnim znanostima, a ispitanici u kontrolnoj skupini odabrali su kolegij Fizika u okolini kao svoj izborni kolegij. Za vrijeme istraživanja podaci su prikupljeni s pomoću obrasca koji se sastojao od 3 tvrdnje otvorenog tipa. Osim toga, pripremljen je evaluacijski obrazac da bi se ispitalo mišljenje sudionika u eksperimentalnoj skupini o kolegiju. Rezultat istraživanja dobiven je analizom predtesta s pomoću koje se prepoznalo nekoliko pogrešnih predodžbi koje su imali svi sudionici, a rezultati posttesta pokazali su da je kolegij Pogrešne predodžbe u prirodnim znanostima bio učinkovit pri eliminaciji pogrešnih predodžbi sudionika u eksperimentalnoj skupini. Također se pokazalo da je kolegij potreban i učinkovit. Rezultati posttesta koji je proveden s vremenskim odmakom potvrdili su ukorijenjenost pogrešnih predodžbi kod sudionika u eksperimentalnoj skupini, iako su oni već obavljali svoj posao nastavnika predmeta prirodnih znanosti.Ključne riječi: rasprava o konceptualnoj promjeni; kemija
Generic Relationships of Zygopetalinae (Orchidaceae: Cymbidieae): Combined Molecular Evidence
Authors: Whitten Mark , Williams Norris , Dressler Robert , Gerlach Günter , Pupulin Franco
Published: July 2015

Se evaluaron las relaciones filogenéticas de la subtribu Zygopetalinae mediante análisis de parsimonia de datos combinados de secuencias de ADN de ITS nuclear 1 y 2 (incluyendo la región 5.8s y partes de las regiones adyacentes 18s y 26s), del intrón del plastidio trnL, del espaceador intergénico trnL-F y del matK del plastidio. El análisis de los tres juegos de datos separados mostró patrones muy congruentes y moderadamente sustentados, de modo que éstos fueron combinados en un solo análisis. El análisis combinado de 104 taxa internos y 2 externos produjo cladogramas de alta resolución. Zygopetalinae abarca un grado o clado de Zygopetalum (pseudobulbos prominentes; hojas a menudo plicadas, revolutas); un clado de Huntleya (pseudobulbos reducidos o ausentes; hojas conduplicadas), que incluye Dichaea, Huntleya, Chaubardia, y el complejo de Chondrorhyncha, además de Cryptarrhena, débilmente sustentada como grupo hermano del clado de Huntleya; y un grado de Warrea. Chondrorhyncha s.l. es polifilética; por ello, aquí se segregan 6 géneros como taxa monofiléticos (ver palabras clave).
Orchid conservation: where do we go from here?
Authors: Seaton Phillip
Published: July 2015

Faced with such a multitude of threats to the natural world, it is all-too-easy to become despondent. Yet the orchid community in general is becoming much more aware of the problems and, increasingly prepared to take action. Thus, the purpose of this paper is to focus on what can and is being done to conserve orchids.
Invasive orchids: weeds we hate to love?
Authors: Ackerman James
Published: July 2015

Rare species that show habitat specificity and an aversion to habitat disturbance may be common in the Orchidaceae (Tremblay et al. 1998; Bergman et al. 2006). Nonetheless, most orchids may not be in such a critical state and many are, quite frankly, weedy. We may learn much about rare species by asking what makes other orchids common and resilient or actually dependent on change. Most orchids do occur in ephemeral or frequently dis- turbed habitats (Ackerman 1983; Catling 1996) whether they are pastures, roadsides, citrus groves, coffee and tea farms, or simply as epiphytes whose substrates, by definition, are temporary and run the gamut from durable tree trunks to short-lived twigs (Johansson 1974).
Orchids of a regenerated tropical dry forest in the Cali river watershed, Municipality of Cali, Colombia
Authors: Orejuela Jorge
Published: July 2015

El bosque seco tropical regenerado en la cuenca media del Río Cali forma un corredor biológico de cerca de 100 hectáreas que conecta la ciudad de Cali con el Parque Natural Farallones de Cali. El Jardín Botánico de Cali, un espacio natural de bosque seco tropical regenerado de 12 hectáreas, forma parte de este corredor y su vegetación muestra una dominancia de especies pioneras de sucesión ecológica secundaria. Las especies que predominan son: “arrayán” (Myrcia popayanensis), Laurel Jigua (Cynammomum tripliner- ve), Sangregao (Crotón gossypifolius), Guácimo (Guazuma ulmifolia), Chiminango (Pithecellobium dulce) y Chagualo (Clusia sp). Un análisis preliminar de las orquídeas presentes en este corredor incluye especies que crecen bien en terrenos abiertos como Cyrtopodium paniculatum y Catasetum ochraceum y en aflora- mientos rocosos como Epidendrum xanthinum, Schomburgkia y Sobralia. Las especies epífitas del JB inclu- yen Dimerandra emarginata, Catasetum tabulare, Encyclia ceratistes, Encyclia sp), Bulbophyllum meriden- se, Cladobium, Epidendrum (3 spp), Maxillaria (2 spp), Lepanthes y Oncidium cartaginensis. Hay dos especies de vainillas que son propiamente especies trepadoras. Las especies típicamente terrestres incluyen los siguientes géneros: (Oeceoclades, Cleistes, Galeandra, Pelexia y Spiranthes. En un bosque seco tropi- cal de condiciones similares en la cuenca del Río Claro se encontró una especie de Coryanthes posiblemente nueva. La vegetación presente en el corredor biológico y el JBC es una regeneración de los últimos 70 años. El área había sido impactada severamente por procesos de agricultura extensiva, ganadería, proyectos viales y por incendios forestales. Las especies nativas de árboles así como las orquídeas presentes actualmente conforman un banco de germoplasma de gran valor particularmente desde la óptica de la restauración ecoló- gica del bosque seco tropical en laderas andinas. Esta flora de orquídeas es precisamente, la misma que alguna vez existía en los bosques donde hoy la ciudad de Cali se extiende y por tanto representa una ventana del pasado y un enorme potencial educativo para las generaciones presentes.
Orchid biogeography and rarity in a biodiversity hotspot: the Southwest Australian floristic region
Authors: Phillips Ryan , Brown Andrew , Dixon Kingsley , Hopper Stephen
Published: July 2015

Understanding the drivers of orchid diversification and rarity may prove crucial to their conservation. The Orchidaceae is characterised by the presence of mycorrhizal endophytes and a diversity of pollination syndromes (Rasmussen 1995, Jersakova et al. 2006). The prevalence of pollination by deceit and the spe- cialised mycorrhizal relationships in some taxa have been implicated in the diversification of the family (Cozzolino & Widmer 2005, Otero & Flanagan 2006). Furthermore, interactions with habitat speciali- sation may act in concert with these attributes to play a critical role in orchid diversification (Gravendeel et al. 2004). The influence of these factors in determin- ing intrinsic rarity in orchids remains poorly known.
Risk of extinction and patterns of diversity loss in Mexican orchids
Authors: Soto-Arenas Miguel , Solano Gómez Rodolfo , Hágsater Eric
Published: July 2015

La norma oficial mexicana (NOM-059-ECOL-2001) lista cerca de 200 especies de orquídeas en alguna categoría de riesgo (Extintas, En Peligro de Extinción, Amenazadas y Sujetas a Protección Especial). Construimos una base de datos que incluye la información más relevante para planear las estrategias de con- servación de estos taxa (nomenclatura, descripciones e ilustraciones para identificación, datos geográficos de todas las poblaciones conocidas, clima, hábitat, refugios, historia natural y ecología, características poblacio- nales, factores de riesgo, etc.). La información estará disponible través de la Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, México (CONABIO). Con esta base de datos y usando sistemas de información geográfica se detectaron las áreas de concentración de orquídeas en riesgo y como éstas se rela- cionan con las Áreas Naturales Protegidas y las Áreas Terrestres Prioritarias para la conservación. Se discuten distintos patrones de riesgo, de amenazas y de pérdida de diversidad. Es evidente que los efectos del cambio climático, combinados con el mal manejo de los sistemas en hábitats únicos, constituyen las mayores amena- zas. La erradicación de poblaciones de orquídeas en amplias zonas densamente pobladas y afectadas, espe- cialmente en Veracruz y Puebla, pueden representar una pérdida importante de la diversidad genética total de las especies. Se hizo un esfuerzo especial por determinar las tasas de extinción de orquídeas en México. Finalmente, y de manera conjunta con otros biólogos de la conservación se desarrolló un método para evaluar el riesgo de extinción en plantas que está siendo adoptado por las autoridades del país y su uso pretende ser obligatorio en el futuro para la inclusión en las distintas categorías de riesgo.
Ex situ conservation of tropical orchids in Ukraine
Authors: Buyun Lyudmyla , Cherevchenko Tetiana , Kovalska Lyudmyla , Long Vu Ngoc
Published: July 2015

The problem of biodiversity conservation of tropical floras having the global ecological, economical and social importance, has already exceeded the boundaries of individual countries. Successful conservation actions require joint efforts of scientists on the local, national, regional, and international levels (Wyse Jackson & Sutherland, 2000, Grodzynsky et al., 2001).
How does hybridization influence the decision making process in conservation? The genus Orchis (Orchidaceae) as a case history
Authors: Fay Michael , Smith R.J. , Zuideruin K , Hopper E. , Samuel R. , Bateman R.M. , Chase M. W.
Published: July 2015

Hybridization is a fundamental process in biology and can lead to new evolutionary lineages. However, if the parental taxa involved are rare, difficult decisi- ons may have to be made regarding the conservation of the biological process versus the conservation of the parental taxa. The genus Orchis in Europe is a good example of a group of species in which these types of questions arise as several of the species hybridize where they co-occur. The example used here relates to O. militaris, O. purpurea and O. simia in the anthropomorphic group (so called because the labellum has lobes thought to resemble arms and legs). All three species are widespread in Europe, al- though they are rare in large parts of their ranges, and they have substantial areas of overlap in distribution. All three are rare in Britain, occurring predominantly in south east England. Orchis militaris and O. simia and are only known from two and three natural sites in England, respectively. Orchis purpurea is less rare, but is still geographically localized.
Molecular identification and genetic studies in Peruvian Phragmipediums
Authors: Rolando Isaias , Rodríguez M. , Damian M. , Benavides J. , Manrique A. , Espinoza J.
Published: July 2015

Peru has inherited one of the greatest biodiversities of the planet. The orchid genus Phragmipedium has several representatives in the country. They are listed in Appendix 1 of CITES, restricted from international trade.
A form and checklist for the description of orchids in the field and laboratory work
Authors: Kirby Stephen , Muñoz Melania
Published: July 2015

Se creó un formulario para la toma de datos durante la descripción de orquídeas en el campo y en el laboratorio. Éste contempla las caracteristicas más importantes que deben ser anotadas para una posterior identificación de las especies con el uso de claves dicotómicas. Además, incluye listas de los téminos botá- nicos más comunes utilizados en la descripción de plantas y flores. Su utilidad es muy grande, tanto para afi- sionados como profesionales, para facilitar la toma de datos y para asegurar que ésta sea lo más completa y sistemática posible. El formulario está disponible en formato pdf en www.bosquedepaz.com
Effect of knowledge gain on species conservation status
Authors: Roberts David
Published: July 2015

Following the 2002 World Summit in Johannesburg, the Convention of Biological Diversity (CBD) called for a decrease in the rate of biodiversity loss by 2010 (www.biodiv.org/2010-target).
Molecular genetic diagnosis of the ‘taxonomically difficult’ Australian endangered orchid, Microtis angusii: an evaluation of the utility of DNA barcoding
Authors: Flanagan Nicola , Peakall Rod , Clements Mark , Otero Tupac
Published: July 2015

As species are the common currency for conserva- tion efforts, their accurate description is essential for efficient preservation of biological diversity. The use of DNA Barcodes, short DNA sequences that evolve fast enough to differentiate species, has been pro- posed both for the discovery of new species and the identification of previously described species.
Efecto del ácido indolbutírico (IBA) y 6-bencilaminopurina (BAP) en el desarrollo in vitro de yemas axilares de Encyclia microtos (Rchb.f.) Hoehne (Orchidaceae)
Authors: Condemarín-Montealegre Carlos , Chico-Ruíz Julio , Vargas-Arteaga Claudia
Published: July 2015

Encyclia microtos (Rchb.f.) Hoehne, is an endemic orchid that are distributed in the north of Peru (Tumbes and Piura) and it is being depredy illegally causing the extinction of the same one. With inter- est to maintain his conservation, is an alternative by means of the propagation in vitro. For that reason the objective of this research is to evaluate the indolbutiric acid effect (AIB) and 6-bencilaminopurine (BAP) in the development in vitro of axillar bud of E. microtos. The experience with plant of 120 days of age began, it was introduced in medium MS (Murashige and Skoog) suplement with sucrose, phytagel, AIB , BAP (sin- gle or combined) and adjusting to pH of 5.5. Nine treatments were made, in a rank of 0; 1 and 2 ppm (sin- gle or combined). The results showed that BAP (2 ppm) promoted the greater development of axillary buds with a rate of multiplication of the double of plant to the 90 days in which they were exposed to the growth regulators. To single concentrations of AIB (1 ppm and 2 ppm), promoted a better development of leaves, roots and length of the same ones.
Community involvment in orchid conservation
Authors: Dilley Andrew
Published: July 2015

In 2000 the Australasian Native Orchid Society, Victorian Group Inc. (ANOS Vic) made the decision to become proactive in orchid conservation. It was appar- ent that government organisations were over stretched when it came to devoting the resources needed to protect our native orchids and that as a society we could assist in many ways.
SEM and PCR study of mycorrhizal fungi isolated from the Australian terrestrial orchid: Prasophyllum
Authors: McQualter Emily , Cross Rob , McLean Cassandra , Ladiges Pauline
Published: July 2015

Most members of the genus Prasophyllum (Leek Orchids) are threatened and restricted in distribution in Australia. Prasophyllum species are obligate mycotrophic plants and current conservation proto- cols for terrestrial orchids in Australia require propa- gation with symbiotic mycorrhizal fungi. Unfortunately there is a paucity of knowledge regard- ing the mycosymbiont in this genus, hampering con- servation and re-introduction efforts.
Cores Project - Conservation of endangered orchids: an action plan for conservation of Brazilian orchids
Authors: Nicoletti Fraga Claudio , Murrieta Franca Rosa , Paes Jorge Eduardo , Bocayuva Melissa , De Araujo Constantino Pedro , Fontana André , Machado Simone , Saddi Eduardo , San Martín-Gajardo Ivonne , Simonelli Marcelo , Bernabe Fabio , Lanusse Anderson , Hardman Bernard
Published: July 2015

The Cores Project, intent to collect biological and antropic informations on nine species of orchids that are included on the official list of threatened species of Brazil (Cattleya schilleriana, Laelia fidelensis, L. lobata, L. grandis, L. jongheana, L. virens, L. perrini, L. tenebrosa and L. xanthina) aiming to revaluate its conservation status and elaborate an action plan to each one in particular.
Estudio de bacterias asociadas orquídeas (Orchidaceae)
Authors: Ramos Zambrano Emilia , Jiménez Salgado Teresita , Tapia Hernández Armando
Published: July 2015

México cuenta con 1 106 especies y subespecies de orquídeas distribuidas en 159 géneros, de las cuales 444 especies y subespecies son endémicas representan- do el 40% de los taxas registrados en el país. Esta diversidad constituye un enorme potencial ornamental, que hasta la fecha no se ha aprovechado en toda su magnitud por los mexicanos, especialmente por secto- res de la sociedad que cuentan con estos recursos fito- genéticos (Red de ornamentales 2004, Soto 1996).
Problemas fitosanitarios que amenazan la conservación de las orquídeas de Costa Rica
Authors: Rivera-Coto German , Corrales-Moreira Gilberto
Published: July 2015

Orchids from private collections, nurseries and wild areas, located in different ecological regions of Costa Rica, were studied in order to know the pests and diseases affecting them. 16 insect and two mite genera were identified as pests on different orchids and 28 pathogens were found as causal agents of infec- tious diseases. The most frequent pests were: Tenthecoris orchidearum, Stethobaris sp., Xylosandrus com- pactus, Pseudococcus longispinus, Diaspis boisduvalii and Tenuipalpus pacificus. The main diseases found were caused by: Phytophthora spp., Pythium spp., Fusariun oxysporum, Fusarium spp., Sclerotium rolfsii, Colletotrichum gloeosporioides, Sphenospora spp., Uredo spp., Cymbidium Mosaic virus and Odontoglossum Ring Spot Virus. This results demonstrate the diversity of organisms producing sanitary problems on orchids in Costa Rica, and suggests the inclusion of pest and diseases management in strate- gies for orchid conservation.
Symbiotic germination of threatened Australian terrestrial orchids and the effect of nursery potting media on seedling survivals
Authors: Wright Magali , Smith Zoe , Thomson Richard , Cross Rob
Published: July 2015

Since the early 1990s, the RBG has contributed to the conservation of Victoria’s Endangered orchids through its ex situ propagation program. Working cooperatively with the Victorian Department of Sustainability and Environment (DSE), the Melbourne Zoo, the Australasian Native Orchid Society, The University of Melbourne, RMIT University and Parks Victoria, research and development has lead to a greater understanding of Victoria’s terrestrial orchids and their associated mycorrhizal fungi, and assisted in the implementation of Recovery Plans.