bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance and Home Advantage in Handball
Authors: Pic Miguel
Published: September 2018

The main objective of this research was to delve into the concept of playing handball at home from a classical perspective of previous studies. The emergence of regularities or certain patterns of play can be explained by the location of matches. Through an observational methodology and a nomothetic, monitoring and multidimensional design, thirty-nine European elite handball matches were selected (N = 39). A mixed ‘ad hoc’ registration system was designed. Records were made of the last three minutes of home and visiting games of which images were available. Two observers with observational methodology experience participated in the study. The quality of the records was dealt with in an intraobserver and interobserver way. Two different techniques were applied for the treatment of the data: a) detection of behavioral patterns by Theme (p < .005) (Magnusson, 2000) and b) Chaid decision trees (p < .05) using SPSSv.24. The results showed the existence of T-patterns according to the location (different T-patterns: home: 1085; away: 1242) of the matches. The categories most involved in effective launches were unveiled. On the other hand, the Chaid model also showed the effect of location (p < .001): home-win (node 9) (n = 149, 69%), away-win (node 10) (n = 15, 16%) in handball. Crossing analysis offered enriched interpretations to advance in the home advantage concept. From this study, guidelines can be drawn that may help handball coaches to build training tasks as differences in behavioral patterns between home or away play in handball were identified. Thus, designing tasks considering a match location has requires specificity.
Changes of strength and maximum power of lower extremities in adolescent handball players during a two-year training cycle
Authors: Górski Michał , Starczewski Michał , Pastuszak Anna , Mazur-Różycka Joanna , Gajewski Jan , Buśko Krzysztof
Published: September 2018

The aim of the study was to investigate changes of strength and power of the lower extremities in adolescent handball players during a two-year training cycle. Thirty-one male handball players (age 16.0 ± 0.2 years, body mass 81.4 ± 9.7 kg, body height 188.2 ± 6.4 cm) took part in this study. All tests were conducted three times at the beginning of a one-year training programme. The maximum joint torque (JT) of flexors and extensors of the elbow, shoulder, hip, knee and trunk was measured under static conditions. Power of lower extremities was assessed with a repeated sprint ability (RSA) test on a cycloergometer and jump tests: akimbo counter-movement jump (ACMJ), counter-movement jump (CMJ) and spike jump tests on a force plate. Peak power (PP) increased from 914.8 ± 93.9 to 970.0 ± 89.2 and 1037.8 ± 114.4 W (p < 0.05) following the RSA test results. Maximum power increased significantly (p < 0.05) in ACMJ (1951.9 ± 359.7 to 2141.9 ± 378.5 and 2268.5 ± 395.9 W) and CMJ tests (2646.3 ± 415.6 to 2831.2 ± 510.8 and 3064.6 ± 444.5 W). Although significant differences in JT (p < 0.05) were observed during the two year period, their values related to body mass for the lower right extremity, sum of the trunk and sum of all muscle groups increased significantly between the first and the second measurement (from 13.7 ± 1.8 to 14.58 ± 1.99 N·m·kg-1, from 9.3 ± 1.5 to 10.39 ± 2.16 N·m·kg-1, from 43.4 ± 5.2 to 46.31 ± 6.83 N·m·kg-1, respectively). The main finding of the study is that PP in the RSA test and maximal power in the ACMJ and CMJ increase in relation to training experience and age in the group of youth handball players.
Detection and analysis of series arc using non-conventional methods in low-voltage switchboards
Authors: Wang Guoming , Kim Woo-Hyun , Ji Hong-Keun , Kil Gyung-Suk
Published: September 2018

Detection and analysis of series arc in low-voltage switchboards have significant meaning for preventing the electrical fires. However, the conventional current and voltage methods have low a sensitivity to sense the minute arc discharge, leading to the fail operation of arc fault circuit interrupter. Therefore, this paper dealt with the application of non-conventional methods, including the ultra-violet (UV), acoustic emission (AE), and transient earth voltage (TEV) sensor in arc detection, for the purpose of improving the detection sensitivity and reducing the potential electric fires. Three types of typical arc faults in low-voltage switchboards were simulated and the actual detection environment was configured. From the results, the wavelength of UV light emitted from arc was 200–400 nm and the arc-induced AE signal had a frequency range of 40–600 kHz. The TEV signals generated from three types of arc faults presented different frequency spectrums, based on which the time-frequency map was used to classify the fault type.
Hybrid MAC protocol for IEEE 802.11 wireless LANs with hidden node problem
Authors: Choi Woo-Yong
Published: September 2018

Combining the IEEE 802.11 basic MAC (medium access control) protocols, which are the DCF (distributed coordination function) and the PCF (point coordination function), we propose a hybrid MAC protocol to improve the performance of IEEE 802.11 wireless LANs and mitigate the hidden node problem.
Fast off grid compressed sensing ISAR imaging algorithm
Authors: Ping Cheng , Jiaqun Zhao
Published: September 2018

To solve the off grid problem in compressed sensing (CS) based inverse synthetic aperture radar (ISAR) imaging, a fast and accurate algorithm has been proposed in the paper. By jointly estimating the off grid error and the sparse solution, off grid ISAR imaging is transformed into a joint optimization problem. Interestingly, it can be solved efficiently through two least squares problems based on first order Taylor approximation. When applied to complex sinusoids and quasi real ISAR data, the proposed algorithm has got better results than the conventional algorithm. Therefore, it is a promising off grid CS based ISAR imaging algorithm.
Theory and Nonlinearity in The Time Traveler’s Wife: Reading in Light of Hayles’s Theory
Authors: Azar Fatemeh Ahmadi , Parvaneh Farid
Published: September 2018

This paper aims to focus on the subject of N. Katherine Hayles’s nonlinearity in Audrey Niffenegger’s The Time Traveler’s Wife as a postmodern work. Niffenegger published her debut novel, The Time Traveler’s Wife in 2003. This novel is a romance and science fiction which narrates the love story of Henry DeTamble – a man with genetic disorder that forces him to time travel unwillingly – and his artist wife, Clare Anne Abshire – who has to deal with his absence and dangerous experiences. Since Henry is a time traveler and experiences life in a non-linear manner, the main question of this research is that to what extent the characteristic of nonlinearity shapes the personality and un-consciences of Henry and Clare in a society which has been defined with Newtonian/Cartesian or linear thinking. To answer this question, N. Katherine Hayles’s Chaos theory can be applicable. Hayles considers nonlinearity as one of the most important and fundamental characteristics of chaotic systems. One of the findings of this research is the inapplicability of Newtonian thinking in post-modern literature.
How can Arts-Based Educational Research be Emancipatory? Insights from Three Research Projects
Authors: Harb Majed
Published: September 2018

In this article I discuss the nature of arts-based research. Based on what relevant research says, I acknowledge that this research approach is built on different assumptions and seeks to enhance people critical consciousness. Three arts-based research projects were reviewed. Findings indicate how artsbased research helps individuals understand their realities and move towards desired change.
Present state and applications of single drop microextraction for the determination of harmful organic compounds and pollutants
Authors: Zichová Silvia , Brisudová Adriana , Hrouzková Svetlana
Published: September 2018

Single drop microextraction (SDME) nowadays earns an increasing attention by scientists due to its simplicity, low cost and the need for only common laboratory equipment. This microextraction technique combines sample cleanup and pre-concentration of analytes in one step. Furthermore, a significant reduction in the amount of organic solvents needed comparing to standard LLE techniques places SDME into the position of environmental friendly extraction techniques. SDME is a straightforward technique in which a micro-drop of solvent is suspended from the tip of a conventional micro-syringe and then it is in a direct contact with a sample solution in which it is immiscible or it could be suspended in the headspace above the sample. The paper overviews developments of the state-of-the-art SDME techniques for the extraction of harmful organic compound and pollutants from environmental, food and biological matrices. Key extraction parameters essential for SDME performance were described and discussed.
The effect of 2-hydroxypropyl β-cyclodextrin on the stability of polyphenolic compounds from Moringa oleifera Lam leaf extracts in a natural low-transition temperature mixture
Authors: Karageorgou Ioanna , Grigorakis Spyros , Lalas Stavros , Makris Dimitris P.
Published: September 2018

Polyphenol extracts from Moringa oleifera leaves (MoL) were obtained with a glycerol-based low-transition temperature mixture (LTTM) and a combination of LTTM with 2-hydroxypropyl β-cyclodextrin (HP-β-CD). The extracts were maintained at 4, 22 and 50 °C for 18 days and the antiradical activity (AAR) was recorded to detect modifications in the antioxidant activity of the extracts. AAR displayed a constant decline at every temperature tested, following pseudo first-order kinetics and the decay constants suggested that the presence of HP-β-CD had a protective action, slowing down AAR decline. The analysis of the polyphenolic profiles using liquid chromatography-diode array-mass spectrometry revealed that after storage for 18 days at 50 °C, the major quercetin glycosides occurring in MoL were extensively degraded. Based on the detection of protocatechuic acid in the stored extracts, putative pathways of flavonol glycoside degradation were proposed. It was concluded that the decomposition of these components was mainly responsible for the AAR decline observed.
Modeling of the soybean oil bleaching and optimization of its conditions in the refining process for environmental interest
Authors: Henache Zahir , Boukerroui Abdelhamid , Kashi Imad
Published: September 2018

In this work, we propose mathematical models describing the soybean oil bleaching process as a function of its parameters (temperature: 80 – 120 °C, clay dosage: 0.25 – 2 %, contact time: 10 – 30 min). The crude soybean oil visible spectrum shows three values of maximum wavelength (λmax). A value at 426 nm corresponding to the chlorophyll-a, the values at 451 and at 479 nm were assigned to β-carotene pigment. The models were developed using multiple linear regression analysis (MLRA) and were performed with Matlab programming language. The input variables are the temperature (X1), the clay dosage (X2) and the contact time (X3). The output parameter is the bleaching capacity (Y in % uptake). Statistical analysis methods were used to analyze and to confirm the reliability of the selected models. The optimal bleaching conditions for the soybean oil were: temperature 100 °C; clay dosage 2 % w/w and contact time 30 min. The highest bleaching capacity was found to be 81.04 % at 426 nm, 90.60 % at 451 nm and 93.66 % at 479 nm. The developed models allowed predicting the bleaching capacity representing the removal of the β-carotene and chlorophyll-a pigments present in the crude soybean oil at each λmax. Also they allowed a better control of the most influencing parameters on the bleaching step and contribute to the optimization of the spent bleaching clay rejects by optimizing the amount of bleaching clay used in the refining process; consequently, to reduce risks of pollution.
On a new species of the genus Tetrabezzia Kieffer, 1917 from West Bengal, India, with a key to world species (Diptera: Ceratopogonidae)
Authors: Saha Poulami , Hazra Niladri
Published: September 2018

Adults of a new species of the genus Tetrabezzia Kieffer, 1917 are described and illustrated from India. Two species of this genus were previously known from the subcontinent and the Oriental region. Keys to the adult males and females of the world species are also provided.
Malacofauna of Selected Areas in Litovelské Pomoraví (Czech Republic)
Authors: Hlava J. , Hlavová A.
Published: September 2018

The molluscan diversity in the Litovelské Pomoraví Protected Landscape Area (PLA) (Moravia, Czech Republic) was studied. The PLA stretches on the territory of a river alluvial plain and is formed by the meandering river, complex of alluvial forests, meadows, and wetlands. It is part of the European network of nature protection areas Natura 2000. Altogether 10 450 specimens representing 107 mollusc species were found by means of hand collecting and sieving a litter layer during the sampling period April 2012–September 2015 at nine selected sampling sites. Computation of the Jaccard and Sörensen indices showed the degree of similarity between the individual locations based on the number of shared species. The principal component analysis based on known ecological characteristics clearly distinguished some locations and indicated the relationships between a particular molluscan group and a locality. The data availability and possibility to assess the succession over time is essential for later evaluation and mapping the natural processes or human impact at naturally important localities.
Quantification of Firmicutes, Actinobacteria, and Gammaproteobacteria from Bohemian Honey
Authors: Hroncová Z. , Konopásková K. , Volštátová T. , Killer J.
Published: September 2018

Honey, which has been used as an ancient remedy for infected wounds, has been shown in laboratory studies to have antimicrobial action against a spectrum of bacteria and fungi. Because very little quantitative information exists on the microbiota of honey, the aim of this study was to quantify the Actinobacteria, Firmicutes, and Gammaproteobacteria groups in samples of honeydew honey and blossom honey from six regions in the Czech Republic, using quantitative real-time PCR analysis with specific primers based on the 16S rRNA gene. Gammaproteobacteria and Firmicutes were clearly the most abundant, predominating Actinobacteria in both types of honey. Most of the Firmicutes were detected in samples from South Bohemia (mean gene copies per 1 g honey: 5.6 × 105) and Ústí nad Labem Region (3.7 × 105), which contained the lowest number of Gammaproteobacteria (15.5 × 103). The Actinobacteria were prevalent in samples from Plzeň (4.3 × 103) and Central Bohemia (5.4 × 103), where conversely the Firmicutes were least abundant. Honey thus contains bacterial species with probiotic activity and oligosaccharides which can act as prebiotics, suggesting that its incorporation into the human diet may potentially impart significant health benefits to consumers compared with ‘empty calories’ consumed as refined sugar.
Fuentes lingüísticas para el desarrollo de competencias comunicativas
Authors: Arias Bonilla Magdalena
Published: September 2018

Este artículo contiene una reflexión preliminar introducida a partir de unos interrogantes planteados con el interés de orientar el proceso de diseño curricular en lengua castellana y procurar el replanteamiento de las prácticas pedagógicas. En esa dirección se plantea un concepto del lenguaje y de la comunicación, se sugieren unas teorías lingüísticas recientes, a las luz de a cuales es posible tender el puente con teorías pedagógicas y de la didáctica para replantear la intervención docente en lenguaje y conducirla de una manera más productiva y menos rutinaria; y orienta acerca de la enseñanza de la gramática al servicio del desarrollo de las Competencias Comunicativas y en consecuencia a la formación de sujetos discursivos en condiciones de utilizar la lengua en cualquier situación de la vida social, laboral y familiar.
Apakah Pemaafan Berkorelasi Dengan Psychological Well-Being Pada Remaja yang Tinggal Di Panti Asuhan?
Authors: Astuti Windi , Marettih Anggia Kargenti Evanurul
Published: September 2018

This study aimed to determine the corelation between forgiveness to psychological well-being in teenagers whose living in orphanages. Subject were obtained 172 adolescents who live in three orphanages in Pekanbaru by using purposive sampling technique that is 172. The Data were collected by using Psychological Well-being scale (Ryff) with reliability coefficient (0,885) and Thompson Heartland Forgiveness Scale (HFS) with reliability coefficient (0,839). The data analysis showed that there is a significant corelation between forgiveness and psychological well-being in teenagers whose living in the orphanages, with R= 0,790, and p = 0,000 (p≤0,05). When teenagers willing to forgive themselves, the situation and others people, it will make the teenagers able to establish a good relationships and able to give meaning for their experienced during life in orphanage which is corelate in perceiving psychological well-being. The low level of forgiveness is corelate with high psychological well-being. To improve the level of psychological well-being, teenegers must have to continue improving his or her own forgiveness, whether for forgiveness of self, others, or the situation.
Sifat Fisika Kimia dan Organoleptik Cookies Beras Hitam (Oryza sativa L. indica)
Authors: Sih Pratiwi Eko Kanti
Published: September 2018

Black rice (Oryza sativa L.indica) is a dark black rice and useful as a super food good for health, because of its high fiber content. Utilization of black rice as a d product is still very minimal. The objective of this research is to know the physical and chemical properties of cookies with fortification of black rice flour. This research method used non factorial RAL (non factorial design) with five level: control (F0), fortification of black rice flour (F1, F2, F3 and F4 = 2,5%, 5%, 7,5% and 10 %). The results of physical analysis of color and brightness indicate that the the percentage of fortification of black rice flour, the brightness decreases, while the texture (hardness) is higher. The result of chemical consisting of water, ash, fat, protein and fiber content, in e with SNI quality of cookies, while for sensory (organoleptic) color test is getting brown (F4), harder texture (F4) with flavors acceptable to panelists rather sweet, somewhat savory typical cookies
Pemanfaatan Kulit Pisang (Musa paradisiaca) Menjadi Donat Tinggi Kalsium
Authors: Hartati Fadjar Kurnia
Published: September 2018

Tujuan dari penelitian ini adalah: memanfaatkan limbah kulit pisang menjadi salah satu produk pangan tinggi kalsium yaitu berupa donat dan mengetahui formulasi tepung terigu : kulit pisang yang tepat sehingga menghasilkan donat tinggi kalsium yang memiliki sifat organoleptik (rasa, keempukan dan warna) disukai .Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan 1 faktor yaitu formulasi tepung terigu : kulit pisang dimana masing-masing perlakuan diulang 9 kali. Perlakuannya adalah : K1 =  30%  :  30%; K2 =  40%  :  20% dan K3 = 50%  :  10%.Hasil penelitian menunjukkan bahwa perlakuan terbaik yaitu pada perlakuan formulasi tepung terigu : kulit pisang = 40% : 20%  yang menghasilkan nilai produk tertinggi yaitu sebesar 0,839. Adapun kandungan gizi donat kulit pisang (tiap 100 g bahan) yang paling disukai yaitu protein 18,56 g, karbohidrat 86,19 g dan kalsium 945,3 mg. Berdasarkan hal tersebut di atas maka donat dengan penambahan kulit pisang mempunyai banyak manfaat, diantaranya untuk menekan biaya produksi, mengurangi limbah kulit pisang, meningkatkan intake kalsium, dan yang pasti menyehatkan tubuh. Kandungan gizi yang terdapat dalam donat dengan menggunakan campuran kulit pisang lebih tinggi dibandingkan dengan donat pada umumnya,. Kata kunci : kulit pisang, donat, kalsiumTujuan dari penelitian ini adalah: memanfaatkan limbah kulit pisang menjadi salah satu produk pangan tinggi kalsium yaitu berupa donat dan mengetahui formulasi tepung terigu : kulit pisang yang tepat sehingga menghasilkan donat tinggi kalsium yang memiliki sifat organoleptik (rasa, keempukan dan warna) disukai .Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan 1 faktor yaitu formulasi tepung terigu : kulit pisang dimana masing-masing perlakuan diulang 9 kali. Perlakuannya adalah : K1 =  30%  :  30%; K2 =  40%  :  20% dan K3 = 50%  :  10%.Hasil penelitian menunjukkan bahwa perlakuan terbaik yaitu pada perlakuan formulasi tepung terigu : kulit pisang = 40% : 20%  yang menghasilkan nilai produk tertinggi yaitu sebesar 0,839. Adapun kandungan gizi donat kulit pisang (tiap 100 g bahan) yang paling disukai yaitu protein 18,56 g, karbohidrat 86,19 g dan kalsium 945,3 mg. Berdasarkan hal tersebut di atas maka donat dengan penambahan kulit pisang mempunyai banyak manfaat, diantaranya untuk menekan biaya produksi, mengurangi limbah kulit pisang, meningkatkan intake kalsium, dan yang pasti menyehatkan tubuh. Kandungan gizi yang terdapat dalam donat dengan menggunakan campuran kulit pisang lebih tinggi dibandingkan dengan donat pada umumnya,. Kata kunci : kulit pisang, donat, kalsium
ANALISIS YURIDIS PELUANG PARTISIPASI DESA ADAT DALAM PEMBENTUKAN HUKUM
Authors: Atu Dewi Anak Agung Istri Ari
Published: September 2018

The Participation formation of the law to be understood as law formation that involving the community in every stage process. Within formation of the law to involve formal actor and non formal actor. Formal actors are executive, legislative and judicative. Non formal actors are the communities and desa adat. In this research will be explained arrangement of the desa adat participation opportunity and the stage of desa adat participation. The research uses normative legal methods with statue approach and legal hermeneutic approach. The results of the research show that there is a clear arrangement about opportunities participation of desa adat in law formation. Arrangement opportunities participation in legal instruments have fulfilled the purpose of law and also philosophy, sociology and juridical. The forming of desa adat opportunities participation within law formation be at stage of ante legislative, legislative and post legislative.Keywords : Opportunity, Participation, Desa Adat, Formation of law.
A relação sociedade-natureza e a construção da ética do cuidado pelo turista
Authors: Alves Vitor João Ramos
Published: September 2018

Sendo o turismo uma prática complexamente transdisciplinar, que precisa ser observado como fenômeno econômico, social e também ambiental, buscou-se nesse artigo de revisão teórica compreender a responsabilidade do sujeito/turista para com a natureza, quando em viagem, a fim de propor a construção de uma Ética do Cuidado para com a relação Sociedade-Natureza. Para tal, propõe-se construir um apanhado teórico a respeito da transformação da natureza em mercadoria pela prática do turismo, analisar o cuidado e a ética com embasamentos relacionados à natureza, além de analisar o comportamento social do turista a fim de propor a construção da Ética do Cuidado. Nesse sentido, pode-se afirmar que a Ética do Cuidado e a socialização da natureza são, seguramente, as práticas mais imperativas a serem trabalhadas nos dias atuais, dado o nível de descuido que paira como uma ameaça sobre o Homem, originado pelo processo de globalização vigente.
Crecimiento urbano y desarrollo inmobiliario en Texcoco
Authors: Toscana Aparício Alejandra , Nieves Guevara Mayra
Published: September 2018

En México y América Latina el crecimiento urbano no planificado ha sido una tendencia que responde a la dinámica de las ciudades centrales y a la dinámica de la acumulación de capital, sin tener en cuenta los impactos ambientales y socioculturales en los espacios locales. Un caso relevante en la Zona Metropolitana de la Ciudad de México es el municipio de Texcoco, estado de México, en donde a partir de 2014 se inició la construcción del megaproyecto aeroportuario más importante del país que, aunado a la construcción de desarrollos inmobiliarios, traerá cambios drásticos en lo ambiental, no sólo por el aeropuerto sino por la concentración de población que demandará al gobierno local mayores servicios e infraestructura.
Sikap Remaja tentang Triad KRR (Seksualitas, Napza, HIV/AIS) di Kelompok PIK R tahap Tegar)
Authors: Sunarti Sunarti
Published: September 2018

Di Indonesia angka kejadian remaja yang mengalami kasus Triad KRR masih tinggi. Remajapernah melakukan seks bebas sebesar 35,9%; pengguna napza sebesar 45,04% dan terkena HIV/AIDS sebesar 45,9%. Tujuan penelitian ini adalah menggambarkan sikap remaja tentang Triad KRR (Seksualitas,Napza,HIV/ AIDS) di Kelompok PIK R Tahap Tegar Kota Blitar. Penelitian ini menggunakan desain penelitian deskriptif. Populasi dalam penelitian adalah seluruh remaja kelompok PIK R tahap tegar Kota Blitar sebanyak 47 remaja, dan besar sampel yang diambil adalah 47 orang menggunakan teknik total sampling. Pengumpulan data dilakukan dengan memberikan kuesioner closed-ended multiple choice questions. Waktu pengambilan data dilakukan selama 3 hari dengan teknik klasikal. Hasil penelitian menunjukkan bahwa remaja anggota PIK R Tahap Tegar di Kota Blitar mempunyai sikap positif tentang Triad KRR yaitu sebanyak 57,4%dan sikap negatif sebanyak42,6% (20 remaja). Sikap positif dipengaruhi oleh beberapa faktor diantaranya usia, pernah mendapat informasi tentang Triad KRR, sumber informasi, kegiatan PIK R yang pernah dilakukan. Sikap negatif dipengaruhi oleh lama remaja ikut kelompok PIK R dan pelaksanaan program PIK R di masing-masing tempat. Rekomendasi penelitian ini diharapkan dapat menjadi bahan evaluasi program sosialisasi yang telah diadakan oleh pembina Bapemas serta diharapkan hasil penelitian ini dapat dijadikan sebagai bahan untuk menyusun program lebih lanjut yang berkaitan tentang Triad KRR (Seksualitas,Napza, HIV/AIDS).
Hubungan Penggunaan Sosial Media dan Pengetahuan Seks Bebas pada Siswa/Siswi Usia 17-18 Tahun
Authors: Wahyuningtias Hesti , Wibisono Wahyu
Published: September 2018

Banyak faktor yang dapat mempengaruhi pengetahuan seks remaja (Siswa) salah satunya adalah sumber informasi berupa media sosial. Tujuan peelitian ini adalah untuk mengetahui hubungan antara penggunaan media sosial dengan pengetahuan seks siswa SMA PGRI TALUN Blitar. Jenis penelitian ini merupakan korelasional dengan rancangan Cross sectional. Populasi dalam penelitian ini adalah remaja SMA PGRI TALUN Blitar dengan sampel 28 siswa. Tehnik pengambilan sampel ang digunakan adalah Total Sampling. Uji statistik menggunakan Spearman Rank. Hasil penelitian menunjukan bahwa terdapat 85,7 % remaja yang menggunakan media sosial facebook dan instagram memiliki pengetahuan baik sebesar 71,4 % dan cukup sebesar 10,7%. Sedangkan dari 4 % remaja yang tidak menggunakan facebook dan instagram meiliki pengetahuan baik dan cukup masing-masing sebesar 7,1% dan 10,7%. Kesimpulan dari penelitian ini adalah adanya hubungan penggunaan media sosial dengan pengetahuan remaja tentang seks bebas di SMA PGRI TALUN Blitar (p = 0,000)
Análise fitossociológica de fragmentos florestais da reserva extrativista do Rio Cajari, norte da Amazônia (Phytosociological analysis of forest fragments of the cajari river extractive reserve, northern amazon)
Authors: Freitas João Da Luz , Silva Raullyan Borja Lima e , Santos Adriano Castelo dos , Cruz Júnior Francisco de Oliveira , Santos Erick Silva dos , Sardinha Maurício Alves
Published: September 2018

O objetivo deste estudo foi analisar a composição florística, diversidade, distribuição diamétrica e estrutura horizontal de fragmentos florestais de terra firme e várzea no trecho médio da Reserva Extrativista do Rio Cajari, município de Mazagão, estado do Amapá. As florestas apresentaram relevante riqueza e diversidade florística. Registraram-se 1068 indivíduos com DAP ≥ 9,5 cm, distribuídos em 29 famílias, 68 gêneros e 84 espécies. A distribuição diamétrica das árvores apresentou-se em forma de “J” invertido, conforme tendência natural das florestas heterogêneas. As famílias Fabaceae, Lecythidaceae, Malvaceae, Chrysobalanaceae e Lauraceae foram as mais representativas em número de espécies, sendo que as espécies com maior valor de importância foram Swartzia polyphylla, Caryocar glabrum, Hevea brasiliensis, Vatairea guianensis e Virola surinamensis. A ampliação dos estudos na Resex é necessária tanto para o auxílio na criação de seu plano de manejo quanto para a subsistência das populações que vivem dentro e no seu entorno. A B S T R A C T The objective of this study was to analyze the floristic composition, diversity, diametric distribution and horizontal structure of forest fragments of firm ground and lowland in the middle section of the Extractivist Reserve of the Cajari River, municipality of Mazagão, state of Amapá. The forests presented significant richness and floristic diversity. There were 1068 individuals with DBH ≥ 9.5 cm, distributed in 29 families, 68 genera and 84 species. The diametrical distribution of the trees was inverted "J", according to the natural tendency of the heterogeneous forests. The families Fabaceae, Lecythidaceae, Malvaceae, Chrysobalanaceae and Lauraceae were the most representative in number of species, being that the species with greater value of importance were Swartzia polyphylla, Caryocar glabrum, Hevea brasiliensis, Vatairea guianensis and Virola surinamensis. The expansion of the studies in Resex is necessary both for the aid in the creation of its management plan and for the subsistence of the populations that live inside and in its surroundings. Keywords: floristic composition, floristic diversity, species trees, horizontal structure.
A integração Metodológica de Modelos no Contexto dos Sistemas Ambientais (Methodological Integration of Models in the Context of Environmental Systems)
Authors: Silva Bruno Lopes , Soares Ilton Araújo
Published: September 2018

Objetivamos a partir do desenvolvimento deste trabalho propor uma metodologia de integração e articulação de diferentes modelos para análise de sistemas ambientais. Para colocar em prática essa proposta, adotamos como aporte teórico-metodológico principal as noções de modelagem sistêmica, cunhadas por Christofoletti (1999), enfatizando sobretudo, os modelos morfológicos, processuais e de dinâmicas evolutivas. A partir desse trabalho foi possível desenvolver uma proposta de integração desses três modelos para o estudo de bacias hidrográficas, bem como a sua utilização para a identificação de indicadores.A B S T R A C TWe aim to develop a methodology for the integration and articulation of different models for the analysis of environmental systems. In order to put this proposal into practice, we adopted the notion of systemic modeling, coined by Christofoletti (1999), as the main theoretical and methodological contribution, emphasizing above all the morphological, procedural and evolutionary dynamics models. From this work it was possible to develop a proposal to integrate these three models for the study of river basins, as well as their use for the identification of indicators.Keywords: modeling, indicators, hydrographic basin
TV Series in Turkish Foreign Policy: Aspects of Hegemony and Resistance
Authors: Constantinou Constantinos , Tziarras Zenonas
Published: September 2018

This article examines the ways in which (pop or) popular culture may fall within the context of foreign policy. More specifically, it situates our analysis against such backdrop by delving into how Turkey effectively exports pop culture, propaganda and positive images of itself via the use of television (TV) shows. To that end, notable Turkish soap operas market its ancient glorious past. Admittedly, these telenovelas form a salient cultural product export for Turkey as they reach diverse and far-away audiences – from Latin America to Russia, Central Asia, North Africa, the Middle East, and the Balkans, to merely name a few. Paradoxically, the frenzy has even reached places like Greece. Not to mention, Serbia or Israel, with the latter’s phenomenal success accompanied also with some backlash. Therefore, the current study seeks to better understand the magnitude alongside the impact of Turkey’s achievement given how it comprises a multi-million-dollar industry, by partially unearthing what makes Turkish TV series so powerful the world over. Further, this research firstly presents an analysis of the hegemonic efforts before presenting the limitations to its success by thoroughly covering the empirical data while, theoretically framing it.
Diversidad morfológica del chile piquín (Capsicum annuum L. var. glabriusculum) de Querétaro y Guanajuato, México
Authors: Ramírez Novoa Uriel Israel , Cervantes Ortiz Francisco , Montes Hernández Salvador , Raya Pérez Juan Carlos , Cibrián Jaramillo Angélica , Andrio Enriquez Enrique
Published: September 2018

En la presente investigación se analizó la variabilidad morfológica de 11 poblaciones de chile piquín silvestre (Capsicum annuum var. glabriusculum) de la Sierra Gorda y semidesierto de Querétaro (municipios de Arroyo Seco, Jalpan de Serra, Tolimán y Cadereyta de Montes) y Guanajuato (municipio de Xichú). La caracterización se realizó en invernadero del Instituto Tecnológico de Roque (ITR), Celaya, Guanajuato, México. Se registraron 44 caracteres en plántula, planta, floración, madurez de fruto y semilla. El análisis de componentes principales (CP), mostró que los tres primeros componentes explicaron 56.6% de la variabilidad morfológica total. El CP1 fue explicado por las características de peso (0.326), ancho (0.301) y longitud de fruto (0.271), densidad de hoja (0.277) y diámetro de semilla (0.297). En el CP2 las variables que más contribuyeron fueron el ancho (0.329) y pubescencia de hoja (0.317) y finalmente, en el CP3 la forma del fruto (0.344) y color de las anteras (-0.308) fueron los más importantes. Por otro lado, el análisis de conglomerados generó cuatro grupos, el grupo I incluyo las poblaciones G3 (Rosa de Castilla), G2 (Palmitas El Tanque), G1 (El Tanque), todas de la Sierra Gorda en Guanajuato. El grupo II, se conformó de la población Q7 (El Patol, Querétaro). El grupo III lo constituyó la población Q5 (Presa Jalpan, Querétaro) y finalmente, el grupo IV se integró por seis poblaciones, Q4 (San Antonio Tancoyol), Q8 (Higuerillas arroyo), Q6 (Higuerillas El Shote), Q2 (El Refugio solar-huerta), Q3 (Tancoyol carretera a Tancoyol) y Q1 (El Refugio El Chilar) del estado de Querétaro. La diversidad morfológica encontrada en esta especie nos refiere que debe conservarse esta planta nativa y que puede integrarse fácilmente en un programa de aprovechamiento sustentable de la flora de la región.
Calidad de sitio para Agave durangensis Gentry en la Sierra de Registrillo, Durango
Authors: Loera-Gallegos Héctor Manuel , Corral-Rivas José Javier , Montiel-Antuna Eusebio , Solis-Moreno Raúl , Chávez-Simental Jorge Armando , González- Cervantes Guillermo
Published: September 2018

El Agave durangensis Gentry, es un recurso natural que ha sido aprovechado de manera empírica por los pobladores de la zona semidesértica del estado de Durango. No se cuenta con elementos científicos y normativos que regulen u optimicen la cosecha de este producto; por lo tanto, contar con el presente, proporciona los instrumentos necesarios para el correcto aprovechamiento del agave. En la presente investigación se probó la factibilidad de cinco modelos matemáticos para determinar la calidad de sitio del A. durangensis en la zona semidesértica de la Sierra de Registrillo, municipio de Durango, México. La base de datos utilizada consistió en 204 pares de agaves dominantes en altura-edad, seleccionados de 180 sitios de muestreo en 1 000 m2 cada uno, tomados en el área de estudio a través de un muestreo sistemático. El ajuste de los modelos matemáticos se realizó por métodos de regresión no lineal ponderada para corregir el problema de heterocedasticidad de varianza observada en la relación altura dominante-edad. Los resultados del ajuste de las ecuaciones indican que el modelo de Chapman-Richards fue el que mejor determina la calidad de sitio. A partir del análisis realizado, se concluye que el uso de modelos de índice de sitio es factible para clasificar la productividad de los sitios de A. durangensis en el área de estudio. El modelo desarrollado proporciona ecuaciones compatibles de índice de sitio y crecimiento en altura dominante.
Comportamiento de mestizos de maíz en tres localidades del centro de México
Authors: Velázquez-Cardelas Gustavo Adrián , González-Huerta Andrés , Pérez-López Delfina de Jesús , Castillo-González Fernando
Published: September 2018

Para saber si existen alelos útiles en maíces nativos para su utilización en un nuevo programa por hibridación se evaluaron 52 mestizos formados con 26 colectas del Estado de México y Tlaxcala y dos cruzas simples del CIMMYT (CML246xCML242) y (CML457xCML459). Se incluyeron como testigos a H-40, tres híbridos experimentales y ambos probadores. El material genético fue evaluado en campo en una serie de experimentos en bloques completos al azar con dos repeticiones por sitio. Se registró rendimiento de grano (REND), vigor inicial (VIG), floraciones masculinas (DFM) y femenina (DFF), alturas de planta (ALP) y mazorca (ALM), aspectos de planta (ASP) y mazorca (ASM) y porcentajes de acame (PACA), ahijamiento (PHI), pudrición de mazorca (PMP) y plantas cuatas (PPC). Para tratamientos se determinaron diferencias altamente significativas en todas las variables. Entre hembras probadoras hubo diferencias altamente significativas para la mayoría de las variables, indicando que el comportamiento medio de cada mestizo se debió al aporte genético de una u otra de éstas. Entre criollos existieron diferencias altamente significativas en todas las variables, excepto en ASP y PACA, por lo que los maíces nativos tuvieron un comportamiento diferente en sus respectivos mestizos y existe diversidad genética entre ellos que puede aprovecharse en un nuevo programa de fitomejoramiento basado en hibridación. Los maíces nativos que formaron los mestizos con mayor rendimiento de grano fueron 22, 21, 9, 14, 20 y 26. Otras características importantes fueron porcentajes de acame y de pudrición de mazorca.
Temperaturas cardinales de desarrollo del teocintle (Zea spp.)
Authors: Aburto-Cansino Gloria Nazdira , Ruiz-Corral José Ariel , Sánchez González José de Jesús , González Eguiarte Diego Raymundo
Published: September 2018

El teocintle representa una fuente importante de genes para el mejoramiento del maíz (Zea mays L.); sin embargo, poco se ha avanzado en la caracterización de sus respuestas a diversas condiciones ambientales, incluyendo el desarrollo del teocintle en función de la temperatura, siendo ésta una variable clave para su adaptación y distribución. La temperatura base (Tb), temperatura óptima (To) y temperatura umbral máxima (Tu) son conocidas también como temperaturas cardinales del desarrollo y son particulares para cada especie, genotipo y etapa fenológica. El objetivo del presente estudio fue determinar las temperaturas cardinales de poblaciones de los teocintles Zea perennis, Zea diploperennis, Zea mays subsp. mexicana razas Chalco, Durango, Mesa Central y Nobogame y Zea mays subsp. parviglumis o raza Balsas. Se utilizaron datos de experimentos de campo realizados entre 1986 y 2005 donde se monitorearon datos de días a antesis (F), datos de temperatura y precipitación. Se utilizaron modelos lineales y curvilíneos para explicar la variación de la tasa de desarrollo de la etapa siembra-antesis (1/F) en función de la variación de la temperatura media (Tm) del período siembra-floración. Los resultados mostraron que la relación entre Tm y 1/F es descrita por una función curvilínea, ajustándose en todos los casos un modelo cuadrático-exponencial, con un valor de r2> 0.73. El valor de Tb varió de 8.02 a 14.31 °C, el de To entre 23.5 y 31.67 °C y el de Tu entre 29.43 y 40.61 °C. Se concluye que los valores de temperaturas cardinales del teocintle varían entre y dentro de razas, lo que indica adaptación a diversas condiciones térmicas para las razas de teocintle estudiadas.
Salinas: nueva variedad de frijol pinto para áreas de temporal de Guanajuato
Authors: Jiménez-Hernández Yanet , Montero-Tavera Víctor , Anaya-López José Luis , Jiménez-Galindo José Cruz , Herrera-Hernández Guadalupe , Guerrero-Aguilar Brenda Zulema , Acosta-Gallegos Jorge Alberto
Published: September 2018

Salinas es una variedad de frijol tipo pinto, de hábito indeterminado-postrado tipo III, fotoperiodo de día corto, madurez temprana, resistente a roya, tizón de halo y antracnosis, grano de oscurecimiento lento y de alta capacidad de hidratación. Fue desarrollada por el Programa de Frijol del Campo Experimental Bajío (CEBAJ). Se derivó de la retro-cruza de Pinto Saltillo// (Pinto Saltillo/97-RS-101) y su evaluación se inició como línea F9 desarrollada por selección de pedigrí. En generaciones posteriores se evaluó con base en rendimiento y resistencia a enfermedades en diferentes lugares del Altiplano Semiárido y del Centro de México. En tres años de prueba (2010- 2012) en ambientes de temporal mostró potencial de rendimiento similar y fue superior en resistencia a enfermedades a Pinto Saltillo. Salinas porta marcadores moleculares de genes asociados con la resistencia a roya (Ur3-Ur7, Ur9 y GB), antracnosis (Co1, Co12, Co2, Co4, Co42 y Co6) y tizón de halo (SR13, ST8, SAE15 y SW13) y en campo muestra resistencia a las razas de estas enfermedades prevalecientes en Guanajuato. También es resistente al virus del mosaico común (BCMV) debido a la presencia del gen I. Salinas produce grano de tamaño mediano de tipo pinto moteado (33 ±3 g 100 semillas-1). El rendimiento promedio en temporal depende del ambiente y del manejo agronómico, en las localidades de Guanajuato va de 622 kg ha-1 en San Luis de la Paz, hasta 3 209 kg ha-1en Salvatierra con fertilización y fecha de siembra óptimas.
Gacela H72: híbrido de maíz precoz para áreas de temporal y riego del Altiplano Central de México
Authors: Arellano Vázquez José Luis , Virgen Vargas Juan , Rojas Martínez Israel
Published: September 2018

Debido al cambio climático que se manifiesta en distribución irregular de la precipitación pluvial menor cantidad de ésta o su incidencia en temporal retrasado y mayor temperatura, surge el problema de falta de híbridos de maíz precoz sobre todo para regiones de bajo y mediano potencial productivo de la mesa central de México, las cuales cubren 1 200 000 ha de la superficie cultivada. El híbrido de maíz precoz Gacela H72, se generó para responder a esas condiciones del cambio climático, ya que es un híbrido doble de ciclo precoz y gran rusticidad, presenta crecimiento y desarrollo vigoroso en la etapa vegetativa inicial, por lo cual supera en porte de planta a otros híbridos de maíz durante los 30 días después de la emergencia, es tolerante a la sequía en etapa vegetativa y reproductiva y rinde bien en condiciones de baja fertilización química. Su rendimiento tiene un rango de 3 a 11 t ha-1 el cual supera a las variedades criollas 50% y a híbridos comerciales privados 20%. Presenta su periodo a espigamiento entre los 95 y 100 días a altitudes de 2 600 m donde otros híbridos y variedades lo alcanzan a 110 y 115 días. Es resistente al carbón de la espiga (Sphaceloteca reiliana) y a la pudrición de la mazorca (Fusarium spp.) y tiene calidad nixtamalera-tortillera. Gacela H72, por ser híbrido doble, posee progenitores de mayor productividad en semilla que otros híbridos, su progenitor hembra rinde 7.5 t ha-1 en Valles Altos, lo cual concede 25% más rentabilidad en la producción de semilla registrada y certificada respecto a otros híbridos. Su porte de planta facilita la siembra intensiva con 70 000 plantas ha-1 y con siembra a doble hilera a 100 000 plantas ha-1 se logran rendimientos de 10 a 11 t ha-1. La cosecha se realiza a 150 días con una humedad en grano de 25%, por lo que la mazorca debe someterse a un proceso de secado (14% humedad). En áreas de riego y buen temporal tiene potencial para la producción de forraje. El principal impacto económico del Gacela H72 es la diferencia de 3 a 4 t ha-1 sobre el rendimiento de la variedad criolla, lo cual representa de 12 000.00 a 16 000.00 pesos ha-1, lo que hace rentable la producción de maíz.
Evaluación de tres protocolos para la extracción rápida de ARN total de tejidos de Prosopis juliflora (SW)
Authors: Michel-López Claudia Yared , González-Mendoza Daniel , Zapata-Pérez Omar , Rubio-Piña Jorge , Cervantes-Díaz Lourdes , Bermúdez-Guzmán Manuel de Jesús
Published: September 2018

La extracción de ARN genómico de alta calidad para la amplificación por PCR, a partir de Prosopis spp., es complicada debido a la presencia de un alto porcentaje de metabolitos secundarios que se unen o coprecipitan con los ácidos nucleicos. En el presente estudio reportamos un protocolo modificado de sodio dodecil sulfato/fenol que incluye la eliminación de nitrógeno líquido en el proceso de maceración, β-mercaptoetanol en la extracción de tampón y paso de precipitación de etanol. Las proporciones de absorbancia A260/A280 del ARN aislado estaban en torno a 2 a 1.9, lo que sugiere que la fracción de ADN era pura y se puede usar para un análisis de PCR posterior. El ARN aislado por este protocolo es de calidad suficiente para aplicaciones moleculares; Esta técnica podría aplicarse a otros organismos que tienen sustancias similares que dificultan la extracción del ARN. Por último, esta propuesta representa una alternativa rápida, barata y eficaz para el aislamiento del ARN genómico de las hojas frescas de Prosopis spp., incluso en los laboratorios de baja tecnología.
Diversidad de chicharritas (Homoptera: Cicadellidae) colectadas en parcelas de chile en el norte-centro de México
Authors: Velásquez Valle Rodolfo , Reveles Torres Luis Roberto , Fernández Martínez Maihualy
Published: September 2018

El chile para secado (Capsicum annuum L.) es un cultivo importante en el norte centro de México donde las enfermedades virales y bacterianas transmitidas por chicharritas son emergentes; sin embargo, muy poco es conocido sobre la presencia y composición de las poblaciones de chicharritas en las parcelas de chile, por lo tanto, el propósito de este trabajo fue identificar los géneros de chicharritas en las parcelas comerciales de chile en los estados de Aguascalientes, Durango y Zacatecas. Se capturaron chicharritas por medio de una red entomológica en 57 parcelas comerciales de los estados mencionados. Se encontraron cicadelidos 86% de las parcelas muestreadas. Individuos pertenecientes a los géneros Aceratagallia spp., Acinopterus spp., Balclutha spp., Carneocephala spp., Circulifer spp., Cuerna spp., Dalbulus spp., Draeculacephala spp., Empoasca spp., Exitianus spp., Graminella spp., Graphocephala spp., Hordnia spp., Ollerianus spp., Scaphytopius spp., Stirellus spp. y Texananus spp., fueron identificados en las parcelas de chile.