bluuebunny/crossref_metadata_2025_split huggingface dataset:
Progressive Collapse Assessment of the Steel Moment-frame with Composite Floor Slabs Based on Membrane Action and Energy Equilibrium
Authors: Shi Fengwei , Wang Lai , Dong Shuo 
Published: May 2017

Background and Objective:
Progressive collapse resistance of the steel moment-frame with composite floor slabs can be assessed by sudden column loss scenarios. In order to investigate the progressive collapse-resistant capacity of the steel moment-frame with composite floor slabs, a simplified approach based on the theory of membrane action and energy equilibrium principle is presented, which assessed the behaviour of progressive collapse resistance of this frame subjected to the removal of a penultimate column via the static and dynamic analysis.

Mateial and Method:
The residual vertical bearing capacity model considering of the membrane action and tie force (TF) method of composite floor slabs is developed to evaluate the force mechanism of the composite floor slabs. An energy-based theoretical framework is proposed for calculating the maximum allowable dynamic demands based on the nonlinear static Pulldown analysis, which is used to explore the relationship between of dynamic and static response in the progressive collapse process. Furthermore, the finite element software SAP2000 is used to calculate the numerical example to verify the reliability of this simplified approach.

Results:
The results show that the composite floor slabs significantly improve the structural progressive collapse-resistant ability and this simplified approach evaluates the progressive collapse resistance of the whole structure effectively.

Conclusion:
The existence of the floor can increase the ductility of the structure, and increase the progressive collapse-resistant ability. The appropriate value of the DIF depends on the ductility and amount of inelastic action the structure would experience during the column removal scenario.
Pengembangan digital book interaktif mata kuliah pengembangan multimedia pembelajaran interaktif untuk mahasiswa teknologi pendidikan
Authors: Mawarni Sella , Muhtadi Ali 
Published: May 2017

Penelitian pengembangan ini bertujuan: (1) menghasilkan produk digital book interaktif yang didesain untuk mata kuliah Pengembangan Multimedia Pembelajaran Interaktif untuk mahasiswa Teknologi Pendidikan FIP UNY, dan (2) mengetahui tingkat kelayakan produk yang dikembangkan. Metode penelitian ini mengacu pada model pengembangan Allesi & Trollip yang dikelompokkan atas tiga prosedur pengembangan, yakni: (a) planning, (b) design, dan (c) development yang dilengkapi dengan komponen atribut mencakup standards, ongoing evaluation, dan project management. Penelitian ini menghasilkan produk digital book interaktif berupa Compact Disk (CD) berserta buku petunjuk. Hasil skor penilaian kelayakan produk melalui uji alpha pada ahli materi sebesar 3,39 (sangat layak) dan pada ahli media sebesar 3,54 (sangat layak). Selanjutnya pada uji betha kelompok kecil diperoleh skor hasil penilaian sebesar 3,64 (sangat layak) dan pada kelompok besar sebesar 3,37 (sangat layak). Penilaian kelayakan produk pada aspek pembelajaran didukung oleh perolehan rerata skor hasil belajar mahasiswa dan hasil unjuk kerja mahasiswa sesuai capaian pembelajaran.Kata kunci: digital book interaktif, multimedia pembelajaran interaktif, mahasiswa Teknologi Pendidikan DEVELOPING INTERACTIVE DIGITAL BOOK FOR "THE DEVELOPMENT OF INTERACTIVE MULTIMEDIA LEARNING COURSE" FOR EDUCATIONAL TECHNOLOGY STUDENTSAbstractThis developmental research aims to: (1) develop an interactive digital book designed for the Development of Interactive Multimedia Learning course for Educational Technology students in faculty of science education Yogyakarta State University, and (2) reveal the feasibility of the developed product. This study refers to the developmental phases developed by Allesi & Trollip that was grouped into three development procedures, consisting of: (a) planning, (b) design, and (c) development that was equipped with component attributes including standards, ongoing evaluation, and project management. This research has produced interactive digital book in the form of Compact Disk (CD) along with manual. The results of the feasibility assessment scores of products through alpha testing on materials experts are 3.39 (very decent), and the media expert of 3.54 (very decent). Later, the betha test in the small group obtained an assessments score of 3.64 (very decent) and in the large group of 3.37 (very decent). The assessment of the feasibility of the product in the learning aspect is supported by the cognitive learning outcomes and of students performance according to the learning outcomes.Keywords: interactive digital book, interactive multimedia learning, Educational Technology students
Pengembangan multimedia pembelajaran interaktif berbentuk game untuk menstimulasi aspek kognitif dan bahasa
Authors: Widyatmojo Galih , Muhtadi Ali 
Published: May 2017

Penelitian ini bertujuan untuk: (1) menghasilkan produk multimedia pembelajaran interaktif berbentuk game, (2) mengetahui kelayakan produk multimedia pembelajaran interaktif, (3) mengetahui kebermanfaatan produk multimedia pembelajaran interaktif berbentuk game untuk menstimulasi aspek kognitif dan bahasa anak TK Kelompok B. Penelitian ini merupakan penilitian dan pengembangan (R&D) diadaptasi dari model Alessi dan Trollip. Prosedur pengembangan meliputi tahap perencanaan, desain, dan pengembangan. Pada uji alpha dilakukan penilaian oleh 2 ahli materi dan 2 ahli media untuk mengetahui kelayakan produk. Selanjutnya pada uji beta dilakukan terhadap 18 anak kelompok B5 sebagai subjek uji coba di TK Negeri 2 Yogyakarta. Penelitian ini menunjukkan hasil sebagai berikut: (1) produk yang dihasilkan memiliki karakteristik sebagai berikut: game dapat digunakan untuk menstimulasi aspek kognitif dan bahasa yang sesuai dengan kurikulum sekolah, terdiri atas 4 jenis permainan, bersifat portable dan standalone, dapat berjalan dengan komputer spesifikasi rendah. (2) produk yang dihasilkan memenuhi kriteria sangat layak digunakan, (3) produk yang dihasilkan sangat layak digunakan untuk menstimulasi aspek kognitif dan bahasa anak TK Kelompok B ditinjau dari kebermanfaatan.Kata kunci: multimedia pembelajaran interaktif, game, kognitif dan bahasa DEVELOPING INTERACTIVE TEACHING MULTIMEDIA IN THE FORM OF GAMES TO STIMULATE THE COGNITIVE AND LINGUISTIC ASPECTS OF KINDERGARTEN STUDENTSAbstractThis research study is aimed to: (1) produce interactive teaching multimedia in the form of games kindergarten students, and (2) identify the appropriateness of the developed interactive teaching multimedia. (3) identify the usefulness of the the developed interactive teaching multimedia to stimulate the cognitive and linguistic aspects of group B.This study was a research and development (R&D) study adapting Alessi and Trollip’s model. The procedures of the study were planning, design, and development. In the alpha test, two materials experts and two media experts examined the product to determine its appropriateness. Then, in the beta test, 18 students of group B5 TK Negeri 2 Yogyakarta participated. The results of the study are as follows (1) The developed interactive teaching multimedia in the form of games have the following characteristics: the games can be used to stimulate the cognitive and linguistic aspects of the students, they match the school curriculum, there are four kinds of game, they are portable and standalone, and they can be operated by computers with low specifications. (2) The developed interactive teaching multimedia in the form of games fulfill the appropriateness criterion so that they are appropriate to be used, (3) the developed interactive teaching multimedia are useful to stimulate the cognitive and lingustic aspects of Group B kindergarten students, viewed from its usefulness.Keywords: interactive teaching multimedia, game, cognitive and linguistic
Changes in the buccolingual inclination of first molars with growth in untreated subjects: A longitudinal study
Authors: Sayania Bhavendrasinh , Merchant Mehreen , Josephs Philip , Chung Chun-Hsi 
Published: May 2017

ABSTRACTObjectives:To assess longitudinal changes in the buccolingual inclination of the maxillary and mandibular first molars in untreated male and female subjects.Materials and Methods:Forty-seven male and 48 female subjects whose longitudinal dental casts were available at ages 6–16 years, with normal maxillary and mandibular arch forms were included. The original casts at ages 6, 7, 8, 9, 10, 12, 14, and 16 years were digitized and standardized. Measurements were recorded as the differences in cusp heights in the vertical dimension for the mandibular and maxillary first molars using OrthoInsight software.Results:On average, for boys from age 6 to 16 years, both maxillary and mandibular first molars uprighted with age. Maxillary molars uprighted 0.403 mm on the left and 0.418 mm on the right; mandibular molars uprighted 0.441 mm on the left and 0.589 mm on the right. Similarly, for girls from age 6 to 16, both maxillary and mandibular molars uprighted with age. Maxillary molars uprighted 0.67 mm on the left and 0.574 mm on the right; mandibular molars uprighted 0.358 mm on the left and 0.329 mm on the right.Conclusions:Maxillary molars erupted with buccal crown inclination at age 6 in both boys and girls and uprighted lingually with growth. At age 16, maxillary molars were not completely upright but rather maintained some buccal crown inclination. Mandibular molars erupted with lingual crown inclination at age 6 and uprighted buccally with age. At age 16, mandibular molars were not completely upright but rather maintained some lingual inclination.
Effect of Different Protocols in Preconditioning With EDTA in Sclerotic Dentin and Enamel Before Universal Adhesives Applied in Self-etch Mode
Authors: Martini EC , Parreiras SO , Gutierrez MF , Loguercio AD , Reis A 
Published: May 2017

SUMMARY

Objectives:
The aim of this study was to investigate the effect of different protocols of 17% ethylene diamine tetra-acetic acid (EDTA) conditioning on the etching pattern and immediate bond strength of universal adhesives to enamel and sclerotic dentin.

Methods and Materials:
Forty bovine teeth with sclerotic dentin and 20 human third molars were randomly divided into eight groups resulting from the combination of the main factors surface treatment (none, two-minute EDTA conditioning manual application, 30-second EDTA manual application, 30-second EDTA sonic application) and adhesives systems (Scotchbond Universal Adhesive [SBU] and Prime & Bond Elect [PBE]). Resin-dentin and enamel-dentin bond specimens were prepared and tested under the microtensile bond strength (μTBS) and microshear bond strength (μSBS) tests, respectively. The etching pattern produced on the unground enamel and the sclerotic dentin surfaces under the different protocols and adhesive systems was evaluated under scanning electron microscopy.

Results:
For enamel, only the main factor adhesive was significant (p&lt;0.0001), with SBU showing the highest μSBS. In sclerotic dentin, the lowest mean was observed for the group without EDTA application and the highest mean in the group with EDTA application with the sonic device for 30 seconds. Regardless of the EDTA protocol, the highest means of μTBS were observed for SBU (p&lt;0.05).

Conclusions:
EDTA conditioning improves the bonding performance of universal adhesives in the self-etch mode on sclerotic dentin, mainly when applied for 30 seconds with the aid of a sonic device. EDTA pretreatment also improves the retentive etching pattern of enamel, but it does not result in higher enamel bond strength.
Specific Heat of Dy.40 Cu.37 Y.23 Amorphous Alloy at Low Temperatures
Authors: Mohammed K.A. 
Published: May 2017

The low temperature specific heat of the magnetic Dy0.40Cu0.37Y0.23 amorphous alloy have been investigated in the temperature range 2 to 50 K. The magnetic contributions to the specific heat, magnetic entropy changes, ordering temperatures and the effective magnetic spin have been estimated for this magnetic amorphous alloy. The magnetic specific heat show broad anomaly at a certain temperature, Tm of about 28 K. The value of Tm is higher than Tf (=23.5 K) determined from low field ac susceptibility measurements. The magnetic entropy changes between 0 K and Tm are estimated to be 84 % of the maximum theoretical value. The behaviors of this amorphous alloy agree quit well with those of condensed rare earth amorphous systems.
Effects of Second-Order Slip and Viscous Dissipation on the Analysis of the Boundary Layer Flow and Heat Transfer Characteristics of a Casson Fluid
Authors: Rahman Mohammad M. , Pop Ioan 
Published: May 2017

The aim of the present study is to analyze numerically the steady boundary layer flow and heat transfer characteristics of Casson fluid with variable temperature and viscous dissipation past a permeable shrinking sheet with second order slip velocity. Using appropriate similarity transformations, the basic nonlinear partial differential equations have been transformed into ordinary differential equations. These equations have been solved numerically for different values of the governing parameters namely: shrinking parametersuction parameterCasson parameterfirst order slip parametersecond order slip parameter Prandtl number and the Eckert number using the bvp4c function from MATLAB. A stability analysis has also been performed. Numerical results have been obtained for the reduced skin-friction, heat transfer and the velocity and temperature profiles. The results indicate that dual solutions exist for the shrinking surface for certain values of the parameter space. The stability analysis indicates that the lower solution branch is unstable, while the upper solution branch is stable and physically realizable. In addition, it is shown that for a viscous fluida very good agreement exists between the present numerical results and those reported in the open literature. The present results are original and new for the boundary-layer flow and heat transfer past a shrinking sheet in a Casson fluid. Therefore, this study has importance for researchers working in the area of non-Newtonian fluids, in order for them to become familiar with the flow behavior and properties of such fluids.
Comparison of Chemical Composition and Antioxidant Activity of Four Essential Oils Extracted from Different Parts of Juniperus excelsa
Authors: Al-Busafi Saleh N. , Al-Saidi Salim H. , Al-Riyami Amani I. , Al-Manthary Nawal S. 
Published: May 2017

The chemical contents and compositions of four essential oils extracted from leaves, branches, fruits and gum-resin of Juniperus excelsa from Jabal Al-Akhdhar in the Sultanate of Oman were studied using infra-red (IR) spectroscopy and gas chromatography-mass spectrometry (GC-MS). IR analysis revealed the presence of C-H, O-H, C=C and C=O functionality bonds with varied intensities. The GC-MS study showed the occurrence of 35 different monoterpenes of which 11 (31.43%) monoterpenes were shared by the four oils. α-Pinene was detected in branches and gum-resin oils as a major compound with different proportions (80.50% in gum oil and 79.03% in branches oil). The major component in leaf and fruit oils was the monoterpene limonene with proportions of 50.46% and 42.51%, respectively. Sesquiterpenes exist in leaf, branch and fruit essential oils but not in gum-resin oil. The essential oil of the leaves showed stronger antioxidant and radical scavenging activities than the other oils.
Comparative Study of Plasma Parameters in Olive Ridley (Lepidochelys Olivacea) and Hawksbill (Eretmochelys Imbricata) During Nesting
Authors: Alkindi A.Y.A. , Mahmoud I.Y. , Plude J.L. 
Published: May 2017

The aim of this study is to investigate the role of plasma level parameters during nesting activity and provide data potentially useful to future studies on the dynamics of reproductive and stress hormones in the most endangered sea turtle species in the world. Plasma parameters in the sea turtles, olive ridley (Lipodochelys oliveacea) and hawksbill (Eretmochelys imbricata) from Masirah Island, Oman, were analyzed relative to nesting stress. To date, no study has been conducted on plasma parameter levels in sea turtles during nesting. Field observations were conducted under ideal temperature conditions. At the time of sampling, there was no significant difference for cloacal, sand, air or water temperature for the two species. Electrolytes (Cl¯, Ca++, K+, Na+ and Mg++), cholesterol, urea, uric acid and osmolarity were measured during nesting. Both species were observed to spend between 1.5 and 2.00 hours on the nesting grounds. Some had successful oviposition and completed all nesting phases, while others with incomplete nesting phases failed to oviposit their eggs. Under both conditions, the turtles of both species had an exhaustive and stressful nesting exercise. Plasma parameter values, both intra-specifically and inter-specifically, were not significantly different for oviposited and non-oviposited turtles. This may indicate that both species have the same physiological adjustment relative to plasma parameters whether or not the turtles oviposited their eggs.
Thermal Effects on the Body mass, Transpiration rate, Feeding and Food Conversion of the Pillbug Armadillo officinalis (Isopoda, Oniscidea) Fed on the Dry Leaf of Punica Granatum
Authors: Youssef Abdelgader K. , Nair Achuthan 
Published: May 2017

Observations were made on the body mass; transpiration rate; assimilation efficiency; gross and net production efficiencies; feeding, assimilation, conversion and metabolic rates of the pillbug Armadillo officinalis Dumeril acclimatized at 14º and 21 °C for 15 days and fed on the dry leaf of Punica granatum (Pomegranate). A brief description is given on the chemical composition of P. granatum leaf. The difference in body mass increments of A. officinalis between the acclimatized temperatures was not significant (t = 1.09; p>0.05). However, significant differences were discernible on the transpiration rate (t = 9.53; p<0.01), moisture (t = 9.01; p<0.01), assimilation efficiency (t = 5.16; p<0.01), feeding (t = 3.76; p<0.05) and conversion (t = 2.58; p<0.05) rates between the woodlice acclimatized at 14º and 21 °C. Better feeding of P. granatum leaf by these animals was observed at 21° C, but better assimilation efficiency at 14 °C. Only 3.21% assimilated food at 14° C and 6.30% at 21 °C were converted into the production of new tissues. The food consumption of A. officinalis at 14º and 21° C was 2.05% and 3.79% body mass/day respectively. The effect of temperature on the activity of A. officinalis in the field is discussed.
Isolation of Aristolochic Acids from Aristolochia Bracteolata and Studies of their Antioxidant Activities
Authors: Al-Busafi Saleh , Al-Harthi Munir , Al-Sabahi Bushra 
Published: May 2017

The isolation and structural elucidation of aristolochic acid-A and aristolochic acid-D from Omani Aristolochia bracteolata plant is reported. Antioxidant activities of these two natural products were evaluated for their capacity to reduce Mo(VI) to Mo(V). The study revealed that aristolochic acid-D is more active than vitamin C while aristolochic acid-A has activity similar to vitamin C.
Minquartia guianensis Aubl.: USO, ECOLOGÍA Y MANEJO EN FORESTERÍA Y AGROFORESTERÍA
Authors: NEBEL Gustav 
Published: May 2017

La especie Minquartia guianensis Aubl se encuentra diseminada por todo el neotrópico bajo, donde crece en una variedad de hábitat. En las zonas inundables de la Amazonía peruana es un producto de mucha extracción y de gran importancia socioeconómica, especialmente porque este es muy apreciado para la construcción de casas. En bosques naturales, la especie hermafrodita floreció y dio fruto casi anualmente, y se observó la producción de abundante fruto en experimentos agroforestales de 6 años en adelante. Su regeneración en bosques naturales ocurrió principalmente bajo sombra. Las plantaciones en fajas agroforestales también mostraron un mejor establecimiento de la plántula y buen crecimiento bajo sombra parcial. Los árboles adultos arriba de 10 cm DAP mostraron baja densidad en bosques naturales inundables (casi de 1 - 4 árboles/ha). Un modelo de relación altura - DAP mostró alturas modestas de casi 29 m. Según un modelo de crecimiento de diámetro, de acuerdo a los datos de crecimientos de bosques naturales inundables, el crecimiento anual actual fue el más alto, de casi 25 cm DAP con 3,9 mm/año, mientras que el promedio de incremento anual culminó en 50 cm DAP con 2,7 mm/año. El punto ideal de volumen de producción que se alcanzó en 300 años fue de 70 cm DAP. En las fajas agroforestales donde la especie creció a plena luz, en tierra firme y en zonas inundables, se necesitaron casi 11 años para que se alcanzaran las alturas dominantes de 7 m y DAP de 8 - 9 cm. Sin embargo, se observó que durante un período largo de sequía algunas plantas de buen tamaño se secaban, sugiriendo que pueden ser susceptibles a la sequía y que deberían incluirse en sistemas agroforestales donde se trabaja con sombra parcial. La reducción de las poblaciones naturales de Minquartia guianensis Aubl. y el riesgo de empobrecimiento genético debido a la extracción excesiva, exige el establecimiento de sistemas de manejo adaptados y orientados hacia los bosques naturales y a las plantaciones agroforestales. En los bosques naturales, los métodos de silvicultura pueden ya sea aumentar la densidad de la planta o mejorar los índices de crecimiento. De cualquier manera, la gran demanda de madera de Minquartia guianensis nos sugiere que también es necesario establecer la especie en fajas agroforestales o en plantaciones.
COMERCIALIZACIÓN DE MASA Y «FRUTO VERDE» DE AGUAJE (Mauritia flexuosa L.f.) EN IQUITOS (PERÚ)
Authors: ROJAS-RUIZ Roberto , RUÍZ-PANDURO Gabriel , RAMÍREZ-MELÉNDEZ Pedro , SALAZAR-JARAMA Carlo F. , RENGIFO-SIAS Cléver , LLERENA-FLORES Charles , MARÍN-RÍOS Camilo , TORRES-NORIEGA Dervin , OJANAMA-VÁSQUEZ Julio , SILVANO-ALVÁN Wellington , MUÑOZ-ISUIZA Vanessa , LUQUE-SALINAS Hilter , VELA-GONZA Nino , DEL CASTILLO-FASABI Nelly , SOLIGNAC-RUIZ Jorge , LOPEZ-DE OLÍVEIRA Víctor R. , PANDURO-RUIZ Flor De María 
Published: May 2017

Este trabajo discute la comercialización de frutos de aguaje en forma de masa y«fruto verde» en la ciudad de Iquitos, Perú. Existen 11 mercados en la ciudad. En cuatro de ellos, es ofertada la masa; en dos, el «fruto verde» por 21 y 30 vendedoras, respectivamente. Ambas actividades son llevadas a cabo por mujeres mayores de 40 años, que tienen en promedio cuatro hijos y cuyas parejas, por lo general, no trabajan. Las comercializadoras de masa y «fruto verde» se dedican a esta actividad desde hace 20 años en promedio. Cabe indicar, sin embargo, que la persona más experimentada la realiza desde hace ya 50 años. Las vendedoras ofrecen sus productos durante todo el año, lo que representa un consumo mensual de 3 720 sacos, cantidad para la que se deben cortar aproximadamente 1 078 palmeras.De un saco de aguaje se obtienen en promedio 22 bolsas de masa y 16 bandejaspequeñas de «fruto verde». Esta cantidad rinde, en época de abundancia, utilidades superiores al salario mínimo de un obrero de la actividad privada. Asimismo, durante la época de escasez, el beneficio económico es mayor que el salario de un docente universitario estatal. Los frutos se exportan en cantidades mínimas a otras ciudades del Perú como Tarapoto, Pucallpa y Lima.Las vendedoras han desarrollado técnicas sencillas y rápidas para conocer la madurez fisiológica del fruto y el ecotipo ofertado.