1.
Certainty and the Linguistic Intervention Program in Foreign Language Learning
Eva Stranovská, Silvia Hvozdíková
American Journal of Educational Research. 2015 3 (6). doi: 10.12691/education-3-6-14
Keywords: Linguistic Intervention Program, certainty, foreign language
Abstract: The purpose of the research study was to investigate the dynamics and the stability of personal variable of certainty in foreign language learning through the tools of the Linguistic Intervention Program - LIP. The research study examined the effect the program had on certainty in foreign language performance as well as durability of the LIP on foreign language performance – one year after the program. The focus was drawn on two kinds of certainty: a) normal certainty I1 and pathological certainty I3. The Linguistic Intervention Program represented a method of active social learning, of self-directed learning, a set of specifically designed techniques and strategies of foreign language learning; for instance: cognitive, relaxation, cooperative, communicative techniques, and the techniques specifically designed for social perception and intercultural communication. The Linguistic Intervention Program emphasized on a natural way of learning foreign language. The research sample included 396 subjects - university students - studying various teaching programs at the of the Philosopher in the city of , . The research tool of Certainty-Uncertainty Scale served the purpose. The participating, first, second, and third-year students, enrolled for the seminars of foreign languages for specific academic purposes. The outcomes of the research showed remarkable findings of the variable certainty – normal and pathological; associated with the dynamics and the stability of foreign language performance through the means of the LIP. The results proved statistical significance in I1 and statistically significant higher score in time durability. The examined variable I3 was referred to as a relatively stabile characteristic in foreign language performance.
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2.
Teaching English Reported Speech to Engineering Students
Irina-Ana Drobot
American Journal of Educational Research. 2015 3 (6). doi: 10.12691/education-3-6-13
Keywords: ESP, ELT, tenses, visualization, activities
Abstract: The purpose of this paper is to underscore some common difficulties that Romanian engineering students face in learning English reported speech. The paper will consider situations in which students will need both to use and to understand reported speech, and will also suggest teaching activities that can help to improve students’ communications skills.
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3.
The Implementation of Generative Learning Model on Physics Lesson to Increase Mastery Concepts and Generic Science Skills of Vocational Students
Johar Maknun
American Journal of Educational Research. 2015 3 (6). doi: 10.12691/education-3-6-12
Keywords: the generative learning model, the mastery concepts, the generic science skills
Abstract: The weakness of learning process is one of the problems faced by the education world. The learning model used has not been able to make students become active in the learning process on physics lessons. One of the learning model has been developed is the generative learning model. The students are required prepare themselves mentally and for understanding the material information studied on the generative learning activity. The knowledge with the mental a connection has been produced from the concept formulation by the active students in the learning process. This study represents a quasi experimental research design is the randomized pretest-posttest control groups design. The generative learning model provides a better impact in increasing mastery concepts of physics for vocational students. Generic science skills were developed on the lesson of vocational physics, mass and unit topic as well as particle kinematics are direct observation techniques, large scale consciousness of nature’s objects, fluency using the symbolic language, proficiency perform logical inference, and proficiency make the mathematics modeling. The Generative learning model provides a better impact in increasing Generic Science Skills of Vocational Students.
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4.
Proximate Composition, Phenolic Contents and in vitro Antioxidant Properties of Pimpinella stewartii (A Wild Medicinal Food)
Arshad Mehmood Abbasi, Xinbo Guo
Journal of Food and Nutrition Research. 2015 3 (5). doi: 10.12691/jfnr-3-5-7
Keywords: nutrients, phenolics, antioxidant properties, Pimpinell stewartii, Himalayas, Pakistan
Abstract: Present study was intended to examine proximate nutritional and minerals composition, phenolic contents and in vitro antioxidant properties of Pimpinella stewartii, a commonly utilized species as medicinal and flavoring agent by the inhabitants of Pakistani Himalayas. Ethnomedicinal data were collected by semi structured interviews and questionnaires. Standard analytical methods were applied to determine nutrients, minerals and phenolic contents, where as free radical scavenging activities and total antioxidant properties were estimated by different assays. Results indicated that Pimpinella stewartii is an excellent source of carbohydrates, proteins and dietary fibers. Likewise, this specie also contains significant levels of K (6332 ± 56.1), Ca (3141 ± 47.0), Fe (1512 ± 18.7) and Mg (478.6 ±11.4) mg/kg. Comparatively, water extracts showed higher concentrations of phenolic contents than acetone extracts, showing significant difference (p<0.05). Flavonoid content was maximum in water extract at 98.67 ± 0.14 mg Rt Eq/100 g FW, followed by flavonols, total phenolics and ascorbic acid. Phosphomolibdenium complex assay (PMA) exhibited highly significant total antioxidant capacity at 86.26 ± 0.53 µM AAE/100g FW for acetone extract, followed by % DPPH radical scavenging activity (62.39 ± 0.40), whereas in water extracts measured levels were highest for ferrous ion chelating activity and ferric ion reducing antioxidant power (FRAP). Pimpinella stewartii was found rich source of nutrients and phenolic contents, and demonstrated significant in vitro antioxidant properties. Furthermore, in depth investigation of phytochemical profiling, in vivo antioxidant properties and biological activities could be useful to promote consumer health and prevention of degenerative diseases.
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5.
Proteomic Analysis of Human Breast Cancer Cells Treated with Monascus-Fermented Red Mold Rice Extracts
Chu-I Lee, Shu-Ling Hsieh, Chih-Chung Wu, Chun-Lin Lee, Yueh-Ping Chang, Jyh-Jye Wang
Journal of Food and Nutrition Research. 2015 3 (5). doi: 10.12691/jfnr-3-5-6
Keywords: Breast cancer cells, Monascuspurpureus, Proteomics, Red mold riceextracts
Abstract: Monascus-fermented red mold rice (RMR) extracts have recently been proved to possess anticancer activities, but the anticancer effect of breast cancer cells treated with RMR is not yet well understood. In an effort to identify proteins that may be involved in RMR-induced breast cancer cell death, we employed proteomic analysis coupled with LC-nanoESI-MS/MS on MCF-7 cells exposed to two RMR extracts, ethyl acetate extract (EAE) and ethanol extract (EE). Sixupregulated proteins were identified in EAE-induced MCF-7 cells, including glyceraldehyde-3-phosphate dehydrogenase, pyruvate dehydrogenase E1 component, heat shock 27 kDa protein 1, cathepsin D, protein disulphideisomerase A3, and prohibitin. The upregulated expression of other 4 proteins was seen in EE-induced MCF-7 cells, including alloalbuminvenezia, annexin A5, endoplasmic reticulum protein 29 isoform 1 precursor, and cellular retinoic acid binding protein 2. The same two down-regulated proteins were identified on cells after treatment with both extracts, dermcidin preproprotein and poly(rC) binding protein 1. These proteins have been implicated in proapoptotic regulation, stress modulation, tumor suppression, and survival factor activity. These analysescould provide valuable information for further exploration of RMR as a promising chemopreventive agent against breast cancer.
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6.
Assessment of Motor Fitness, Physical Fitness and Body Composition of Women Football Players at Different Levels of their Participation
Rajkumar Sharma
American Journal of Sports Science and Medicine. 2015 3 (2). doi: 10.12691/ajssm-3-2-4
Keywords: motor fitness, physical fitness, anthropometric characteristics, competitive levels
Abstract: Objective :Many of scientific investigations on women’s football specific to the topics of player characteristics has considerably increased in recent years due to the increased popularity of the women’s game in India and world. Therefore, the present investigation aim was to assess the different motor levels of women football players from various competitive levels i.e. motor fitness, physical fitness and body composition. Participants: Fifty women football players of three different competitive levels volunteered to participate in this study, were selected as the subjects from the state of Chhattisgarh. The age, height, weight, Body Mass Index, Explosive power of arms and shoulder, Explosive power of legs, speed., Agility and Cardiovascular endurance (PFI) were taken as a criterion measure for the present study. This investigation included National level (N= 17, age =21.29 ± 1.21 years, height=162 ± 0.06 cm, weight= 49.76 ± 3.21 kg ), Interuniversity level (N=17, age =20.53 ± 1.33 years, height=161 ± 0.03 cm, weight= 49.12 ± 2.57 kg), and state level N= 16, age =21.19 ± 1.38 years, height=161 ± 0.03 cm, weight= 48.38 ± 5.21 kg) women football player’s physical fitness, motor fitness and body composition were measured. Methods: All the subjects were asked to execute the physical performance tests Haward Step Test measure cardiovascular endurance), (Medicine Ball Throw measure explosive power of arms and shoulder), (Standing Broad Jump measure explosive power of legs ), ( Zig-Zag Run measure agility & speed) and (Shuttle Run measure agility). Age (years) of the participants was recorded from the academic record of the schools, were weights were measures by using a digital scale (Harpenden Balance Scale), Standing heights were measured with Harpenden portable stadiometer and. Body mass Index (BMI) was calculated as weight (kg) divided by the square of the height (m). To assess the motor fitness, physical fitness, and body composition of three different level women football players, means, standard deviations and F-ratios were computed. The level of significance was set at a p<0.05. The statistical package for social science (SPSS 16.0 version) software package was used to analyze the data. Results: Descriptive statistics resulted similarity in anthropometric characteristics of national level, inter- university level and state levels female Football players. One way analysis of variance (ANOVA) with physical fitness, motor fitness and BMI of women Football players of National, Inter-university and state level and motor fitness resulted in insignificant F-ratio for zigzag run (1.24), shuttle run (1.07), medicine ball throw(1.42) and standing broad jump(0.52). P.F.I.(1.73) and B.M.I.(0.93). Conclusion: Similarity was expressed by women Football players of national, inter-university and state levels in their selected anthropometric characteristic, Physical fitness and motor fitness components.
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7.
Quantitative Analysis of Alcoholic Drinks. Use of Calibration Curve Method to Determine the Alcoholic Degree of Samples of Paesanella, a Distillate of the Family of Grappa
Checchetti Andrea
World Journal of Chemical Education. 2015 3 (3). doi: 10.12691/wjce-3-3-3
Keywords: Spirit, “Grappa”, “Paesanella”, alcoholic degree, calibration line, UV/vis spectroscopy
Abstract: Within the framework of laboratory activities relating to the teaching programof a fifth-year class of a technical school in Italy, we have determined, by the means of a spectrophotometer UV/vis, the alcoholic degree of a series of samples of Paesanella, a distillate of the family of grappa. In this experiment of quantitative analysis the students prepared anaqueous solution of ethanol to draw, by means of measurements of absorbance, the calibration line. The students found, making use of EXCEL, the linear equation with which to calculate the alcoholic degree of the samples of Paesanella.
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8.
Qualitative Measurement of pH and Mathematical Methods for the Determination of the Equivalence Point in Volumetric Analysis
Andrea Checchetti, Jessica Lanzo
World Journal of Chemical Education. 2015 3 (3). doi: 10.12691/wjce-3-3-2
Keywords: measurement of pH, acid-base titrations, mathematical methods, chemistry experimentation
Abstract: In this article is presented a gradual path on the pH making use of the laboratory. The idea arises from the consideration that the laboratory does not have to be the place of the ritual repetition of standardized procedures, often carried out with materials and instruments prepared, but a method of approach to phenomena and situations that promote the active participation of students. We move from a qualitative measure of the pH of acidic solutions, basic and neutral, to quantitative measure of the equivalent point of an acid-base titration. The methodology used by the teachers is based on learning by doing: few notions of theory to learn the fundamental concepts and many laboratory activities that help the students to produce reports on their activity. The qualitative measurement of pH, using as an indicator the red onion of Tropea (Italy), was carried out in a lower secondary school, while the volumetric analysis has been at the center of lab activity addressed to fourth class of a technical institute. In particular, the attention has been focused on acid-base titrations and how to determine the equivalence point. In both school levels, the primary objective was the acquisition of the fundamental principles and practical skills relating to the methods of analysis. All activities have been selected and organized in order to constitute a valid and mutual integration with the theory, not only as a moment of experimental verification of what the students have learned in theory, but also, where possible, as a basic tool to derive laws, principles theoretical models starting from the experience.
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9.
Changes in Surface Properties and Dyeability of Polyethylene Terephthalate Fibre Pretreated with Selected Chlorinated Solvents
Oyeleke G.O., Popoola A.V., Adetuyi A.O.
Journal of Polymer and Biopolymer Physics Chemistry. 2015 3 (1). doi: 10.12691/jpbpc-3-1-2
Keywords: SEM, XRD, polyester, scission, dyeing, chlorinated solvents, fastness
Abstract: Scanning electron microscopy (SEM) and X- ray diffractometry (XRD) analyses has been used to investigate the structure of polyester fibre surface before and after treatment in some chlorinated solvents; perchloroethylene (PCE), trichloroethylene (TCE), 1,1- dichloroethylene (1,1-DCE) and tetrachloromethane (TCM) for different times in relaxed condition at room temperature. The results of the scanning electron micrographs did not show any observable internal damage in the fiber structure. On the surface however, several changes such as presence of micro voids, roughness and scissions of varying shapes, magnitudes and spacing density have been observed. The intensity of the diffracted peaks from the X- ray diffractographs of the treated fibre also showed a fall compared to the control one which may be accounted for in terms of the surface structural changes earlier on observed. The pretreatment of the polyester fibre with the chlorinated solvents was found to improve the dye uptake of all the treated fibres in the order of TCE > 1,1-DCE > PCE > TCM; this may be due to the large increase in the inter surface area swelling and greater segmental mobility of polymer molecules. TCE was found to be the best among the four solvents in terms of improvement in dye uptake. The improvement in the fastness properties (wash and light) of the pretreated fabrics was also observed. The chlorinated solvents used in this experiment caused structural differences on surface structures of the polyester fibres and these changes are very crucial to the behaviour of the polymer in fibre processing for other essential usage.
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10.
Using Chemical Modeling to Asses Water Quality in the Raigón Aquifer System in Southern Uruguay
Julia Torres, Lorena Gonzatto, César Goso, José Luis Fernández-Turiel, Marta Rejas, Maite García-Vallés, Carlos Kremer, Eduardo Kremer
Journal of Environment Pollution and Human Health. 2015 3 (2). doi: 10.12691/jephh-3-2-2
Keywords: Raigón aquifer system, groundwater, chemical modeling, speciation, trace elements
Abstract: The Raigón aquifer is an important groundwater system in southern Uruguay. The increasing use of groundwater resources in the last decades has provoked changes in the concentration of many elements which are strongly related to anthropogenic pollution sources. Concentration levels are useful to detect changes in reservoir status but it is also necessary to analyze their chemical significance in order to make an accurate assessment of the sources of contamination and the causes of changes. In this work we use the available thermodynamic data to calculate chemical speciation on these groundwater samples. Trace elements present as anions, in particular Se and Mo, are especially focused to show the chemical modeling possibilities. Both elements form anionic species, predominantly MoO42- and SeO42-. Results show that these anions interact in solution and are greatly influenced by the concentration of the abundant calcium ion. Localized changes in pH can strongly affect the situation. The same is observed with the pE parameter, but only in the case of Se. Chemical speciation of trace elements is in general highly dependent on pH, pE and concentration of major elements. In consequence, for a fixed analytical total concentration, these parameters can markedly change the situation, affecting the mobility, the bioavailability and environmental fate of these elements. The strategy employed in this work can also be extended to the study of many other environmental water scenarios.
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