bluuebunny/crossref_metadata_2025 huggingface dataset:
CONCEPÇÕES DE LICENCIANDOS DO CURSO DE CIÊNCIAS BIOLÓGICAS ACERCA DA CONTEXTUALIZAÇÃO NO ENSINO DE CIÊNCIAS
Authors: SIPEC I
Published: February 2020

A contextualização no ensino de Ciências se configura como uma prerrogativa para aaprendizagem dos conceitos trabalhados. No entanto, tal reconhecimento não implica quehaja um consenso quanto ao conceito de contextualização e, por conseguinte, suarealização na prática pedagógica. Assim, o presente estudo teve o objetivo de investigare analisar as concepções de graduandos do curso de Ciências Biológicas - Licenciatura,matriculados na disciplina de Instrumentação para o Ensino de Ciências em umaUniversidade Pública do Estado do Paraná. Os dados foram construídos mediante asrespostas dos participantes da pesquisa a um questionário dissertativo. A concepção datemática abordada não é clara para os licenciandos, visto que atribuem a contextualizaçãoao cotidiano imediato dos alunos.
Comparative and Experimental Studies for Evaluation of Paraloid B-72 in Traditional and Nano Forms for Joining of Pottery Samples
Authors: Ibrahim Mohamed Moustafa , Mohamed Wael Sabry , Mohamed Hamdy Mohamed
Published: February 2020

Many of the excavated pottery artifacts are suffering from different deterioration aspects. The pressure of burial environment is considered the most deteriorative agent for pottery in soil, which leads to damage of the artifact. Therefore, it is necessary to join these damaged parts to be suitable for museum display. The adhesive materials play a significant role in the joining processes of these artifacts. In this study, Paraloid B-72 in its traditional and nano form was prepared (50% in acetone) as adhesive for pottery artifacts. Twelve pottery tiles (14 ×4×1 cm) were prepared and then were adhered together with the adhesive in traditional and nano forms. The pottery samples were exposed to artificial aging as follows; accelerated heat-humid aging (temperature 100°C and 60% relative humidity) and light aging by U.V lamp for 100 hours. Visual assessment and several analytical techniques were used for the evaluation of the selected adhesive. The analytical techniques are transmission electron microscope (TEM), scanning electron microscope (SEM), color change and tensile strength. The results obtained from transmission electron microscope showed that grain size of nano paraloid was ranging from 33 to 51 nm where the particle size of the traditional paraloid was in the range between 103 to 150 nm. Visual assessment proved that nano paraloid had some simple changes in appearance. Scanning electron microscope revealed that the nano paraloid was more resistance for aging than traditional form. Color change revealed that nano paraloid gave the lowest level of total color differences (ΔE) after light, heat-humid and light-heat aging with 2.31, 3.26 and 4.60 respectively. The tensile strength revealed that nano paraloid gave highest tensile strength (81.3 N/mm2). According to these results, we recommend the use of nano paraloid in joining of archaeological pottery artifacts.
Numerical Study of Long Channel Carbon Nanotube Based Transistors by Considering Variation in CNT Diameter
Authors: Dehghani Sajjad
Published: February 2020

While much numerical studies have been done on short channel carbon nanotube field effect transistors (CNT-FETs), there are only a few numerical reports on long channel devices. Long channel CNT-FETs have been widely used in chemical sensors and biosensors as well as light emitters. Therefore, numerical study is helpful for a better understanding of the behavior of such devices. In this paper, we numerically analyze long-channel CNT-FETs by solving the continuity and charge equations self-consistently. To increase the accuracy of simulation, filed-dependent mobility is applied to the equations. Furthermore, a method is proposed to obtain the electrical current of transistors as a function of CNT diameter. Obtained results are in good agreement with the previous experimental data. It is found that compared to a CNT-based resistor, the dependence of current on diameter is much higher in a CNT-FET. Finally, reproducibility of transistors based on the arrays of random CNTs of 1-2 nm diameter in terms of the CNTs number is also investigated.
CHAPTER 1 Thermodynamics and Kinetics of the High Temperature Oxidation of Stainless Steels
Authors: Chandra-ambhorn Somrerk , Thublaor Thammaporn , Pascal Celine
Published: February 2020

This chapter introduces stainless steels and their classification for the high temperature applications. The enabling theories for the high temperature corrosion i.e. thermodynamics and kinetics are further addressed. The basic concept of thermodynamics is given and the stability of the formation of thermal oxide on stainless steel is exemplified. Types of defect in the oxide and Fick’s first law for the diffusion of defect though the oxide are introduced. Oxidation kinetics is explained with the emphasis on the derivation of the parabolic rate law.
Effectiveness of chest physiotherapy and pulmonary rehabilitation in patients with non-cystic fibrosis bronchiectasis: a narrative review
Authors: Annoni Sara , Bellofiore Angela , Repossini Elena , Lazzeri Marta , Nicolini Antonello , Tarsia Paolo
Published: February 2020

Respiratory physiotherapy and rehabilitation are important therapeutic options in non-cystic fibrosis bronchiectasis (NCFB). The aims of this review of clinical trials were to evaluate the safety and the effects on physiologic and clinical outcomes of airway clearance techniques (ACTs) and rehabilitation in NCFB patients, in comparison to usual care. The search was performed on March 2018 by using PubMed and PeDro databases. 33 studies were selected. The use of ACTs for NCFB were effective in increasing sputum volume although no benefit in quality of life (QoL) or pulmonary exacerbations were observed. There were no differences in effectiveness between the several techniques used. Humidification and saline inhalation were able to aid airway clearance. Hypertonic solution (HS) was more effective than isotonic solutions (IS) in improving expectoration and sputum viscosity. Pulmonary rehabilitation (PR) was found to be associated with short term benefits in exercise capacity, dyspnea and fatigue. Exercise training seems to improve quality of life and lower exacerbation rate, but long-term data are not available. Further studies are necessary to identify the most feasible long-term outcomes such as QoL and exacerbation rate.
تقييم التلوث الميكروبي لدجاج الشواية بمدينة جدة
Authors: إبراهيم إسماعيل شباج إبراهيم إسماعيل شباج
Published: February 2020

تضمن البحث تتبع التلوث الميكروبي في بعض عينات دجاج الشواية جمعت من اثني عشرة موقع يمدينة جدة تمثل ستة أحياء في جدة مرتين كل شهر لمدة ثلاثة أشهر. وجد أن متوسطات أعداد المجاميع الميكروبية (اليكتيريا الحية الكلية, والكوليفورم, الكلي والكوليفورم البرازي0‏ والسالمونيلا والاستافيلوكوكس) في العينات المأخوذة وقت الذروه كانت أقل من العينات المأخوذة وقت ركود البيع. كما وجدت أعلى متوسطات المجاميع الميكروبية المدروسة كانت في العينات المأخوذة وقت ركود البيع من المواقع الشعبية. وقد وجد أعلى متوسط لأعداد البكتيريا الكلية الحية في العينات المأخوذة في الشهر الثاني(11410‏ خلية/ جم) من حي الرحاب. كما كانت أعلى المتوسطات لمجموعة الكوليفورم الكلي (1400 خلية \جم) ومجموعة الكوليفورم البرازي (500 خلية \ جم) بين العينات المأخوذة من حي الرحاب في الشهر الأول. ومن ناحية أخرى, كانت متوسط اعداد العينات المأخوذة في الشهر الأول (1900 خلية \جم), تمثل أعلى المتوسطات لمجموعة السالمونيلا, بينما كان أعلى متوسط لمجموعة الاستافيلوكوكس (600 خلية \جم) من عينات حي النزهة في الشهر الثالث. وعليه يوصى بتناول وجبات دجاج الشواية مباشرة بعد الشراء أر حفظها بالتبريد لحين الاستخدام مع العناية باختيار أماكن الشراء, وذلك لتلافي حدوث العدوى أو التسمم الغذائي
Response of Four Lemon (Citrus limon L. Burm) Cultivars Cultured in vitro to
BAP, KIN and 2,4- D Combinations
Authors: Abdul Mohsin Radah Obiad Al Sayed Abdul Mohsin Radah Obiad Al Sayed
Published: February 2020

The present study was carried out in the lab. of plant tissue culture at King Abdulaziz University to
test the response of four lemon cultivars to micro-propagation using BAP, Kin and 2,4- D combinations. The
used explants in this study were intermodal segments and collected from the one year old lemon seedlings
which obtained from the Citrus Research Center, Najran, Saudi Arabia. The experiments were laid out in a
split plot design using 4 replicates. The results revealed that there were significant differences due to
genotypic and growth regulators effects and their interaction for all measured parameters except no of days to
buds sprouting. Explants of ‘Shehri’ registered maximum values of no. of days to buds sprouting with
0.5mg/l-1 Kin +0.5mg/l-1 2,4-D, % sprouted buds with 0.5mg/l-1 BAP, % dead shootlets with 2mg/l-1
BAP+0.5mg/l-1 2-,4- D and length of primary shoots (mm) 1mg/l-1 BAP+0.5mg/l-1 2-,4- D. Shoots of ‘AlnEurka’ formed the highest no. of leaves with 0.5mg/l-1 BAP+1mg/l-1 2-,4- D. Low responses were observed
for explants from ‘Shaary’, ‘Banzahir’ and ‘Aln-Eurka’ on culture medium supplemented with high
concentration of BAP alone or with combination of 2,4- D. There were observed no sprouted buds for
explants of ‘Shehri’ on culture medium complemented with high concentrations of Kin in combinations with
2,4- D. Lemon explants were successfully in vitro propagated using intermodal segments and combinations of
BAP, Kin and 2,4- D at low concentrations.
Effects of Various parameters on Radiative Transfer Theory Based Microwave
Emission Model
Authors: Mazen E. Assiri Mazen E. Assiri
Published: February 2020

This paper outlines research that is currently being carried out to model the interaction of
electromagnetic radiation with earth and atmosphere. Among many others, passive microwave (PM) imagery
represents a useful source of data for mapping Earth features. Since, signal of a microwave radiometer is
composed of surface and atmospheric contributions, for proper interpretation of the data these effects should
be quantified. This research presents analysis of radiative transfer model contributors, which include; the
ground based parameters, forest area, water area, and meteorological parameters. The principal objective of
this study is to analyze the degree to which brightness temperature can be affected by various earth and
atmospheric features. A sensitivity analysis is performed to test the contributing effects of various parameters
in radiative transfer theory based microwave emission model. The results of the study show that soil
temperature and forest stem volume are the main contributing parameters in estimating brightness
temperature values. The results further show that both the earthly located features and atmospheric
parameters are important factors that must be taken into account in the development and application of
radiative transfer theory based models
How European Governments Support European Start-Ups in Silicon Valley
Authors: Mingozzi Irene
Published: February 2020

The recipe for the creation of Silicon Valley is not clear nor easy. But it’s clear from the results that something big is happening here. How Silicon Valley became that critical in the global startup ecosystem? How can Europe be part of this innovation catalyzer? The European Governments have a clear strategy: building a “two-way bridge” supporting startups in both ways (going to Silicon Valley and coming back to Europe). This does not only offer a cutting-edge service for European startups, but also is remarkably improving the European innovation ecosystem avoiding the uncontrolled “human capital (and startups) flight” and attracting international capitals in Europe.
EXPRESSION AND ANALYSIS OF SEISMIC DISASTER INFORMATION BASED ON KML
Authors: Lin Y. X. , Wang S. T.
Published: February 2020

Abstract. The display and recognition of geographical features based on KML and Google Earth/Google Maps provide possibilities for the visualization and analysis of earthquake disasters. In this paper, compile and generate the corresponding point and face KML files of the disaster information of Guangxi Zhuang Autonomous Region in January through the Visual Basic custom script. The KML files realize information display, query and analysis in Google Earth,and combine with Arcgis's topography, elevation and image information of feature points to carry out multi-information source analysis and realize the interpretation and analysis of the current situation of earthquakes, which can provide some reference information for the monitoring and evaluation of earthquakes.
KARST ROCKY DESERTIFICATION ANALYSIS BASED ON HISTORICAL DISP DATA TAKE TWO REGIONS FOR EXAMPLE
Authors: Liu J. , Zhou G. Q. , Jia B. , Yue T. , Peng X. Y.
Published: February 2020

Abstract. Karst rocky desertification (KRD) is used to characterize the processes that transform a karst area covered by vegetation and soil into a rocky landscape almost devoid of soil and vegetation. This situation seriously affects and threatens the living environment and standards of local people, which results in a series of social problems. In view of the importance and harmfulness of KRD, many scholars have studied the spatial and temporal evolution of KRD and its driving forces. In this paper, the Visual Interpretation Marks of Rocky Desertification in Southwest China in 1960s are constructed by using the DISP image of the United States, combined with DEM data and Hydrogeological data. The area of rocky desertification in Guangnan and Funing counties, where rocky desertification is more serious, is about 2457.729 km2. The area of rocky desertification can be used as the basic data for studying the historical changes in southwestern China by researchers.
STUDY ON THE VARIATION OF SURFACE WATER BASED ON LANDSAT IMAGERY IN GUILIN
Authors: Lu X. J. , Wu C. L. , Yan H. B. , Huang Y. H. , Luo L. , Zhou B.
Published: February 2020

Abstract. Using remote sensing technology to study the distribution and change of surface water is an important application of remote sensing technology. It is also an important means of water resources protection. This paper takes the Lijiang River Basin in Guilin, Guangxi as the research object. Landsat satellite images were used as the data source. After classifying the images, the surface water distribution area of Lijiang River Basin in Guilin City was extracted, and the area change and its spatial distribution are compared. On this basis, combined with the actual situation in Guilin, the paper analyzes the causes of surface water distribution change in Lijiang river basin from two aspects of natural factors and human factors.
REMOTE SENSING RETRIEVAL OF SOIL MOISTURE IN GUANGXI BASED ON ATI AND TVDI MODELS
Authors: Lu X. J. , Zhou B. , Yan H. B. , Luo L. , Huang Y. H. , Wu C. L.
Published: February 2020

Abstract. In order to further to improve the monitoring accuracy of soil moisture spatial and temporal changes in Guangxi, this paper uses MODIS, Landsat8, ASTER GDEM data and measured relative soil moisture data as data sources. According to the design idea of complementary advantages, the EVI value of Landsat8 image is partitioned, and the relative soil moisture is inverted by ATI model method in the area of EVI≤0.33, and the relative soil moisture is inverted by TVDI model in the area of EVI>0.33. The apparent thermal inertia model (ATI) and the temperature vegetation drought index model (TVDI) was used to invert the relative soil moisture in Guangxi. The results show that the temporal variation of relative soil moisture in the study area in 2017 is the change cycle from rising to falling: the rising period is from January to July, and the falling period is from August to December, in which the relative soil moisture reaches the peak in July. The minimum value are December; the relative soil moisture in the north of Guangxi are generally higher than that in southern Guangxi. The correlation between the relative soil moisture value of the ATI model and the TVDI model partition retrieval and the measured relative soil moisture data is higher, and the relative soil moisture retrieval effects is better.
RESEARCH ON PM2.5 MASS CONCENTRATION RETRIEVAL METHOD BASED ON HIMAWARI-8 IN BEIJING
Authors: Luo F. L. , Jing J. L. , Wang A. N. , Liang L. S.
Published: February 2020

Abstract. This paper was based on Japan's new generation of geostationary satellite Himawari-8 2016 Aerosol Optical Depth (AOD) data and near-ground monitoring station PM2.5 mass concentration data, boundary layer height (BLH), relative humidity (RH), normalized vegetation index (NDVI) data to establish a multivariate linear regression model (MLR) and a geographically weighted regression model (GWR) in Beijing.This provided data and scientific basis for the treatment of air pollution.The results show that: (1) The fitting determination coefficient R2 of the MLR was 0.5244, indicating that there was a significant correlation between PM2.5 and AOD. After GWR model introduced BLH, RH and NDVI in turn, R2 increased from 0.3945 to 0.5403, indicating that the introduction of relevant influencing factors can improve the accuracy of the model, that was, PM2.5 was affected by BLH, RH and NDVI. (2) The regression coefficients of the MLR and GWR of the BLH, RH and NDVI were statistically analyzed. The regression coefficients of the two models were close to each other, but the standard deviation of the GWR regression coefficients was larger than the MLR, indicating that the local information of the GWR model was more abundant. It reflected the difference characteristics of the regression coefficients of each parameter.
CHARACTERISTIC OF DROUGHT AND FLOOD IN THE DIAN-QIAN-GUI KARST AREAS BASED ON TRMM-Z INDEX
Authors: Wang Y. F. , Liang L. S. , Jing J. L. , Luo F. L. , Wang A. N.
Published: February 2020

Abstract. In order to study the spatial and temporal variation of characteristics of drought and flood in Dian-Qian-Gui Karst Areas of China, TRMM 3B43 precipitation data from 1998 to 2017 and 72 rain gauge station data from 1998 to 2012 were used to verify the TRMM 3B43 data on monthly scale by correlation coefficient and relative deviation. The TRMM-Z index was taken as an index of drought and flood to quantitatively analyze the drought and flood characteristics. The results show that: (1) there was a significant positive correlation between TRMM 3B43 precipitation data and the measured data of meteorological stations on the monthly scale, with a correlation coefficient of 0.92, passing the significance test of 0.01 level. The calculated result of relative Bias is -0.058, indicating that TRMM 3B43 precipitation is slightly higher than the actual precipitation. (2) From 1998 to 2017, the TRMM-Z index in the research area fluctuated between −1.160 and 1.678, among which the Z index in July 1999 reached the maximum value of 1.678, and in February 2010 the Z index reached the minimum value of −1.160. (3) During the past 20 years, the flood months in the study areas were 47 months, accounting for 19.58% of the study time, and 40 months were drought months, accounting for 16.67% of the study time. Floods mainly occurred in the summer with abundant rainfall, while droughts mainly occurred in the winter with less rainfall. (4) Taking 2008–2009 as typical representative of drought and flood, the spatial variation of drought and flood were researched.
ESTIMATION OF OPTICAL PROPERTIES USING QAA-V6 MODEL BASED ON MODIS DATA
Authors: Zhan J. , Zhang D. J. , Zhang G. Y. , Wang C. X. , Zhou G. Q.
Published: February 2020

Abstract. Optical property parameters play an important role in ocean colour studies. As a key variable, the absorption coefficient is of great significance for calculating the content of each component in water and simulating the physical, chemical and biological properties of water. The inversion algorithms mainly include empirical model, semi-analytical model and neural network model. In this study, we focused on the QAA_V6, which is the newest version of Quasi-Analytical Algorithm (QAA). It is necessary to test the QAA_V6 model in different conditions. IOCCG data set is used to verify the accuracy of QAA_V6. Additionally, MODIS data of case 1 waters and case 2 waters were selected. After extraction and matching, the data was finally imported into QAA_V6 model to calculate the absorption coefficient with a R2 of 0.999 in both case 1 waters and case 2 waters, thus the QAA_V6 model showed a high accuracy and robust applicability in the inversion of inherent optical properties. Subsequently, it can be further verified for the waters in more complicated areas, providing a firm foundation for implementing QAA into the research of ocean colour remote sensing.
LAND USE/LAND COVER CHANGE AND ENVIRONMENTAL EFFECTS IN THE NORTHEASTERN QINGHAI-TIBET PLATEAU FROM 1980 TO 2015
Authors: Zhao J. Y. , Song Q. , Du M. , Li G. R. , Yang J.
Published: February 2020

Abstract. The Qinghai-Tibet Plateau ecosystem is sensitive and fragile, the grassland degradation and soil erosion in the plateau are still increasing. In this paper, we conducted a quantitative study to clarify the characteristics of land use/land cover change, the driving factors, and the environmental effects in the plateau. We focused on the northeastern Qinghai-Tibet Plateau as an example, and created land use change matrices and determined the relative change rate, vegetation cover, and environmental quality index using land use data and NDVI3g data from 1980 to 2015. The results show that there were significant differences in land use/land cover change in the study area around 2000, while the farmland did not increase significantly, and the water areas exhibited a decreasing trend initially followed by an increasing trend, the unused land first increased and then decreased, and residential areas increased significantly after 2000. The relative change rate of the grassland was the largest between 1980 and 2015, while most of the grassland was converted into farmland, residential land, and unused land. In addition, grassland degradation increased significantly. Considerable spatial heterogeneity in vegetation and land use/land cover was observed in the study area. The vegetation cover decreased in some areas due to the grassland degradation, however, the others areas showed improvements due to the influences of policies and climate change. The environmental index and ecological service value of the study area declined and the environment deteriorated during the study period.
THE TYPHOON DISASTER ANALYSIS EMERGENCY RESPONSE SYSTEM BASED ON UAV REMOTE SENSING TECHNOLOGY
Authors: Chen Q. J. , He Y. R. , He T. T. , Fu W. J.
Published: February 2020

Abstract. The satellite image data has some shortcomings such as poor timeless, incomplete disaster information and so on in the typhoon disaster analysis. Compared with the satellite image data, unmanned aerial vehicle (UAV) remote sensing technology has the characteristics of flexibility, convenience, high resolution and so on. It plays a great role in the aspect of obtaining the images and systematically analyze the disaster data. This research based on UAV technology to obtain the high resolution image data and complied the disaster thematic maps after interpretation, as well as determining the data model. Subsequently, determining the system used Html, Javascript and CSS to build the system framework. Combining with Postgre SQL database, Leaflet map module and Echarts diagram and other technologies to perform the feasibility analysis and the detailed design of the integrated system. Finally, it could accurately and comprehensively obtain the system’s disaster monitoring, the typhoon track display, the diagram statistics and visual analysis of the data processing, as well it could deeply analysis and management for the disaster information and assessment. The application shows that this system could provide the information support for future emergency rescue, which is of great significance for the monitoring and preventing the occurrence natural disasters in the future.
NEOTECTONIC SIGNIFICANCE REVEALED BY STREAM LENGTH – GRADIENT INDEX OF THE DAXI RIVER BASIN IN THE SOUTHERN MARGIN OF ORDOS, CHINA
Authors: Han L. , Du C. Y. , Liu Z. H.
Published: February 2020

Abstract. Since the late Cenozoic era, due to the impact of the Indo- Eurasian plate collision and the northeasterward compression of the Tibetan Plateau, a series of extensional sub-basins and tectonic belts have been formed at the periphery of the Ordos block. Watershed geomorphology plays an important role in studying the formation of rock uplift and river erosion, and are recording the surface evidence on landforms evolution. In this paper, twenty-eight sub-basins and tributaries around Daxihe River, locating at the southern margin of Ordos, were extracted from SRTM1 DEM data. Combined with Hack profile and related river parameters, the tectonic and geomorphic morphology were evaluated synthetically. The results show that (1) The mean SL of this area is 93.9, indicating that the tectonic activities are strong in Daxihe River Basin; (2) The SL values of the northern and southern are 58.9–152 and 66–137.4, respectively, showing that the uplift rate of eastern margin larger than the southern margin; (3) There are positive power functions between K and drainage area, also between landform relief and slope. This study plays an auxiliary role in regional geological background, structural activity analysis and disaster prediction.
ANALYSIS OF THE LOCATION OF NANNING LARGE-SCALE MALL BASED ON BP NEURAL NETWORK
Authors: Huang H. , Liu L. L.
Published: February 2020

Abstract. Site selection is a key first step in the operation of large-scale shopping malls, and most of the existing site selection methods lack practicality and efficiency. Therefore, it is necessary to carry out a scientific modeling of the site selection problem and provide effective reference information for site selection. With the development of machine learning algorithms, the modeling of such problems becomes more and more simple. In this paper, using matlab software as a tool, based on BP neural network algorithm, Nanning urban area is selected as the research object. After analyzing the influencing factors of location problem, the large-scale mall location analysis modeling is carried out. After repeated training and testing of the training data and the test data, the data for testing the usability is input into the model and applied for analysis. It turns out that the large-scale mall location analysis model is usable and can meet the site selection needs of the mall.
RESEARCH ON STUDENT BEHAVIOR INFERENCE METHOD BASED ON FP-GROWTH ALGORITHM
Authors: Li J. W. , Yu N. , Jiang J. W. , Li X. , Ma Y. , Chen W. D.
Published: February 2020

Abstract. How to use modern information technology to efficiently and quickly obtain the personalized recommendation information required by students, and to provide high-quality intelligent services for schools, parents and students has become one of the hot issues in college research. This paper uses FP-growth association rule mining algorithm to infer student behavior and then use the collaborative filtering recommendation method to push information according to the inference result, and then push real-time and effective personalized information for students. The experimental results show that an improved FP-growth algorithm is proposed based on the classification of students. The algorithm combines the student behavior inference method of FP-growth algorithm with the collaborative filtering hybrid recommendation method, which not only solves the FP-tree tree branch. Excessive and collaborative filtering recommendation algorithm data sparseness problem, can also analyze different students' behaviors and activities, and accurately push real-time, accurate and effective personalized information for students, to promote smart campus and information intelligence The development provides better service.
Application of Differentiated Teaching in Applied Sciences in Secondary Education
Authors: Antonios Plageras , Georgios Stamoulis , Konstantinos Kalovrektis , Apostolos Xenakis
Published: February 2020

Nowadays, differentiation in teaching is considered to be a given fact on all levels of education. Responding to the needs of all students in a class with various needs constitutes a major challenge. The weakness on the teacher’s part to deal with different students on different cognitive levels leads to their failure at school and to all the negative results that arise from it. Differentiated teaching and learning contributes to the dealing of the problem maintaining at the same time the respect to different levels of knowledge existing in the class and responds to the needs of every student.The present article presents a case study where a group of Technology teachers and an expert on the development of a curriculum developed and applied a differentiated learning environment of teaching on the third grade of secondary school in two secondary schools in Greece. This study proves that differentiated teaching has a positive impact on the involvement and motivation of students and improves their understanding difficult meanings of applied sciences.
A Cross-Cultural Comparison of Study Skills and Learning Strategies Between Saudi and American Students
Authors: Alasmari Nasser , Amri Zeineb
Published: February 2020

Study skills and learning strategies are essential in organizing and facilitating learning for academic purposes. Meanwhile, differences in the use of these skills among students coming from distinct cultures are usually based on stereotypes and prejudices.This paper examined the study skills and learning strategies of 236 university students coming from two universities in Saudi Arabia and in the USA by means of the Study and Learning Strategies Inventory (LASSI), a follow up interview and a study diary. To investigate differences in study skills and learning strategies’ use among university students, origin, as Saudi or American, was taken as the independent variable in this study. Results revealed that American students employ study skills and learning strategies other than those used by Saudi students when it comes to the cognitive skills. However, as far as the affective skills are concerned, both groups had difficulties. Such a finding suggests the possibility that study skills’ use varies across cultures. The results of this study could be implemented, first, in raising the awareness of students, teachers, policy makers and counselors about the role of culture in study skills and learning strategies’ use and second in offering training and counseling for incoming foreign university students.
Tackling Learning Difficulties With the Art of Dance and Movement in Preschool Age in the Greek School
Authors: Sakellariou Maria , Strati Panagiota , Mitsi Polyxeni
Published: February 2020

One of the main problems in the recent years that have been a matter of concern not only to teachers but also to other parties close to school life, is the treatment of children with learning disabilities. These difficulties act as an inhibiting factor in the educational progress of students and can even lead to social problems. This research work deals with the case study of students attending an integration section within a general class and their diagnosis’ states: Mixed Developmental Disorders, Hyperactivity and Dyspraxia of subtle and agile mobility. The survey was conducted in a kindergarten of the Region of Epirus during the school year 2017-2018. Dance, movement, musical and kinetic games as forms of artistic expression according to the New Curriculum of the Kindergarten, were used as tools throughout all of the Cognitive Domains of the programme. Our purpose was the development of corporal consciousness, strengthening self-confidence and self-esteem, preventing and addressing mental, emotional and psychosomatic problems, reducing hyperactivity and dyspraxia of subtle and agile mobility. Through choreographies, musical performances, taking on a role or contacting diverse materials, the pupil is free to express himself/ herself and has the ability and flexibility to move any way he/she desires. Body movement, motion coordination, and body image thematics can help achieve the developmental goals.
An Integrated Ulul-al-Bab Curriculum: It’s Qur’anic Perspective
Authors: Al hasani Syed Mahbubul Alam
Published: February 2020

This study aims to find out the importance of Ulul-al-Bab Curriculum and its relation to the Holy Qur’an. Producing a student with integrated holistic personality is the main focus of this curriculum. Therefore, it emphasizes on the secondary education system in several schools of Malaysia to prepare anUlul-al-Bab generation. The implementation of Ulul-al-Bab program is a new perception in Malaysia educational system. In particular, this program will help to produce Ulul-al-Bab generation with a three characteristics of Quranik, Ensiklopedik and Ijtihadik. Currently, Ministry of Education Malaysia is giving a lot of efforts to achieve the mission of the program. Thus, it is very important to look into this program since the aim of education and knowledge is to produce an individual who will serve for the human kind as well being a good (khalifah) vicegerent of Allah s.w.t. The aim of this paper to show the significance of new Ulul-al-Bab curriculum and it importance for the rest of the Muslim countries in the world.
Moderating Effect of Self-Esteem on the Relationship Between Optimism and Life Satisfaction in Final Year University Students
Authors: Agberotimi Samson F. , Oduaran Choja
Published: February 2020

This study examined the moderating effect of self-esteem on the relationship between optimism and life satisfaction in final year university students. A correlational survey design was utilized. Two hundred and twenty-three university final year students of a Nigerian university consisting of 124 males and 99 females aged 24.67±2.56 participated in the study. Data were collected with a structured self-report questionnaire containing satisfaction with life scale (α = .82), Rosenberg self-esteem scale (α = .86), and life orientation test – revised (α = .79). Data were analyzed with SPSS v.23 at 0.05 significant level. Self-esteem significantly moderated the relationship between optimism and life satisfaction as indicated by a significant increase in proportion of the variance in life satisfaction when the interaction term between optimism and self-esteem was added to the regression model [ΔR2 = .03, ΔF (1, 219) = 7.26, p < .008, b = .188, t(220) = 2.69, p < .01]. It was concluded that the predictive impact of optimism on life satisfaction of university final year students is enhanced by their self-esteem; thus, students should be exposed to environment and program that promotes the development of high self-esteem and optimistic life orientation to enhance their well-being.
Adoption of Mobile Phone Messages for Delivery and Newborn Care in Bangladesh
Authors: Alam Mafruha , Banwell Cathy , Olsen Anna , Lokuge Kamalini
Published: February 2020

In Bangladesh, mobile phones have been adopted as a health communication tool to improve maternal and child healthcare. To understand what works and what doesn’t work for mobile phone based messages around delivery, postpartum and newborn care in resource limited settings we interviewed 33 women who enrolled in an educational service that provides twice weekly voice or text messages to pregnant women and mothers of 0-11 month old babies and had participated in a survey. This follow up qualitative exploratory study showed that women appreciated receiving messages around newborn care and nutrition information over pregnancy messages. Women in low- income households faced challenges accessing messages on shared phones while those with low literacy and limited technological knowledge preferred to receive voice messages over text messages. Husband’s endorsement of the service improved women’s adoption of the messages. Knowledge on additional consultation service and information on how to enroll in the service for later pregnancies was found to be low. Some participants were reluctant to pay for educational messages and avoided the calls. Women’s healthcare practices suggested growing awareness on biomedical practices although women from low- income households were more likely to follow traditional unskilled birthing and newborn care practices at cultural influences unless experienced complications. Besides providing contextual messages, a holistic response is required that includes; training local birth attendants, sensitizing female family members who organize the home based deliveries, and establishing a subsidized referral system to improve birth related health outcomes in low- income households.
Five sesquiterpenes from the root Aucklandia lappa Decne.
Authors: Fuguan Chjuo , S Seesregdorj , Ya Gerelt-Od
Published: February 2020

The four sesquiterpenes calameone (1), dehydrocostus lactone (2), aristolone (3), alantolactone (4) and one triterpenoid α-amyrine (5), simple phenolic compounds such as 4-hydroxybenzaldehyde, (6), piceol (7), apocynin (8), dihydroconiferyl (9) and coniferyl (10) have been identified by using the proton and carbon NMR spectra which were isolated from a dichloromethane extract of the roots of Aucklandia lappa Decne. Their structures were established by the one‐and two‐dimensional NMR techniques including DEPT, COSY and HMBC spectroscopy. This work examined proton and carbon NMR data of calameone (1) and aristolone (3) for the first time, which had not yet been fully studied in previous literature.

Рүда ургамлын (Aucklandia lappa Decne.) терпент нэгдлийн судалгаа

Хураангуй: Рүда ургамлын үндэсний дихлорметаны ханднаас хроматографийн аргуудаар эвдесман хэлбэрийн сесквитерпен каламеон (1), аристолон (3), алантолактон (4), гвяан хэлбэрийн сесквитерпен дегидрокостасын лактон (2), тритерпеноид α-амурин (5) болон энгийн фенолт нэгдэл 4-гидроксибензальдегид (6), пицелол (7), апоцинин (8), дегидрокониферол (9), кониферол (10) зэрэг бодисыг химийн цэвэр байдалтай ялгав. Эдгээр бодисын бүтэц байгуулалтыг нэг болон хоёр хэмжээст ЦСР-ын DEPT, COSY, HMBC спектроскопийн аргаар таньж тодорхойлов. Урьд өмнө каламеон (1), аристолон (3) бодисуудын устөрөгч ба нүүрстөрөгчийн атомуудын химийн шилжилтийн утгуудад оноолт бүрэн хийгдээгүй байсан ба энэ хоёр бодисын оноолтыг гүйцээж хийв.

Түлхүүр үг: Терпеноид, сесквитерпент лактон, дегидрокостасын лактон, ЦСР.
Technological study of iron ore processing from Chandmani-Uul deposit by dry and wet magnetic separation
Authors: B Unursaikhan , D Baasanjav , N Sugir-Erdene , B Orgilbayar , S Sukhbat , Ts Soyolmaa , Ts Zagarzusem , E Otgonjargal
Published: February 2020

The iron ore sample is processed in laboratory conditions with methods of both dry and wet magnetic separation. The particle size of the processed sample was 1 mm electric power of dry magnetic separation 0.2A-0.6A, and the rotation number of the separation drum was chosen to be 32 per/min. The most suitable procedures to get standardized concentrate are optimized through considering the following facts that the duration of wet magnetic separation is 20, 30, 40, 50 minutes, classification yield is 43.50 %, 55.70%, 72.70%, 85.20% for 0.074 mm crushed particles, and the electric power is 1A-5A of the wet magnetic drum. As a result of this process, the initial Fe concentration of the primary ore has increased from 43.59% to 65.60% and the recovery arose to 96.93%. Therefore, the combination methods of dry and wet iron ore separation are applicable for processing of iron concentrate with higher pureness that meets the requirements of metallurgical industries.

Чандмань-Уул ордын төмрийн хүдрийг хуурай соронзон болон нойтон соронзон аргаар баяжуулах технологийн судалгаа

Хураангуй: Төмрийн хүдрийг лабораторийн нөхцөлд хуурай болон нойтон соронзон баяжуулалтын хосолсон аргаар баяжуулсан. Нойтон соронзон баяжуулалтын нунтаглалтын хугацаа 20, 30, 40, 50 мин, 0.074 мм-ийн ангилал харгалзан 43.5%, 55.7%,72.7%, 85.2%-тай байхад соронзон орны 1-5А гүйдлийн хүч зэргээс хамааруулан стандарт баяжмал гарган авах технологийн зохистой горимуудыг тогтоосон. Анхдагч хүдэр дэх төмрийн агуулга 43.59% байсан бол туршилт судалгааны үр дүнд төмрийн агуулга 65.60% болж 96.93%-ийн металл авалттай төмрийн баяжмал гарган авсан. Иймд хуурай, нойтон соронзон баяжуулалт хосолсон схемээр төмрийн хүдрийг баяжуулах нь цаашид металлургийн үйлдвэрийн шаардлага хангасан өндөр цэвэршилттэй төмрийн баяжмал гарган авах боломжтой гэж үзэв.

Түлхүүр үг: Төмрийн хүдэр, хуурай соронзон баяжуулалт, нойтон соронзон баяжуулалт, төмрийн баяжмал
Technological study on the Gravity Processing of Manganese Ore
Authors: Ts Zagarzusem , D Baasanjav , N Sugir-Erdene , B Orgilbayar , S Sukhbat , Ts Soyolmaa , B Unursaikhan , L Jargalsaikhan , E Otgonjargal
Published: February 2020

This study investigated the effectiveness of the gravity beneficiation method based on gravitation and centrifugal forces for manganese ore. Manganese ores from Unagad deposit, samples powders were analyzed for their element and mineralogical composition using inductively coupled plasma mass spectrometry (ICP-MS) and X-ray diffractometer (XRD). Mineralogy and petrographic analysis are presented the mineralogical compositions are hydro goethite, manganese minerals and magnetite, the gangue minerals are quartz, albite, orthoclase, microcline in manganese ore. Manganese mineral occurs white, improper shape particles, weak grained-aggregates associated in gangue minerals. The most important minerals consist of manganese minerals are hausmannite, pyrolusite, rhodochrosite, and manganosite. The composite of feed containing 17.31 % Mn and 36.3 % SiO2 was produced by a centrifugal concentrator in combination with the shaking table. In the experiment, a concentrate assaying 41.37% Mn was obtained from this composite with 11.9 % yields. In the next experiment, f80=0.074mm particle size feed ore was used in the MGS concentration test. A concentrate containing 38.33 % Mn with 26.57 % yields was produced in this experiment. The results showed that it is possible to obtain concentrate on the gravity processing of manganese ore that economically significant and meet standard requirements.

Манганы хүдрийг гравитацийн аргаар баяжуулах технологийн судалгаа

Хураангуй:  Энэхүү судалгааны ажлаар манганы хүдрийг хүндийн хүч болон төвөөс зугтах хүчний үйлчлэл дээр үндэслэн гравитацийн аргаар баяжуулах туршилт явуулав. Унагад ордын манганы хүдрийн дээжийн элементийн найрлагыг индукцийн холбоост плазмын масс спектрометр (ICP-MS), эрдсийн найрлагыг рентген дифрактометрийн аргаар тодорхойлсон. Минералоги, петрографийн шинжилгээгээр чулуулагт гидрогётит, манганы эрдсүүд, магнетит гэсэн хүдрийн эрдсүүд, кварц, альбит, ортоклаз, микроклин зэрэг хүдрийн бус эрдсүүд тодорхойлогдлоо. Хүдрийн бус эрдэс дотор манганы эрдэс нь цагаан өнгөтэй, зөв бус хэлбэртэй мөхлөгүүд мөн сул шигтгээлэг байдлаар тааралдаж байна. Манганы эрдсүүд нь гаусманит, пиролюзит, родохрозит, манганизит хэлбэрээр агуулагдсан байна. Манганы 17.31%, цахиурын ислийн 36.3% агуулгатай анхдагч хүдрийг төвөөс зугтах хүчний сепаратор болон ширээний хосолсон аргаар баяжуулахад баяжмалын агуулга Mn-41.37%, гарц 11.9% байв. Харин -0.074 мм фракцийн агуулга 80%-тай анхдагч хүдрийг хүндийн хүчний сепаратор (MGS)–аар баяжуулж, 38.33% -ийн манган агуулсан, 26.57% -ийн гарцтай баяжмал гарган авсан. Иймд манганы хүдрийг гравитацийн аргаар баяжуулахад стандартын шаардлага хангасан эдийн засгийн ач холбогдолтой бүтээгдэхүүн гарган авах боломжтойг тогтоов.

Түлхүүр үг: Манганы хүдэр, хүндийн хүчний сепаратор, төвөөс зугтах хүчний сепаратор, рентген - дифрактометр.
Characterization of mica from bodonchiin gol deposit (Mongolia)
Authors: Ts Zolzaya , G Oyun-Erdene , J Temuujin
Published: February 2020

Although there are many mica deposits in Mongolia, there is no substantial study of the composition of the mica and the chemical composition and on their utilization. In this work, we characterized the minerals composition of two different samples which was located on the surface (mica-1) and in 10 m depth from the surface (mica-2) of the Bodonchin river deposit from Altai sum, Khovd province (Mongolia). The main objective of this research work was to prepare nanoporous materials from clay minerals by a different acid leaching condition. In order to evaluate the leaching characteristics, the chemical composition, mineral composition, bonding characteristics and specific surface area of mica samples were determined by X-ray fluorescence, X-ray diffractometer, FTIR and BET method, respectively. The main chemical composition of mica sample-1 consists of silicon dioxide 45.68%, and aluminum oxide 31.22%, potassium oxide 10.51% while mica sample-2 contains silicon dioxide 45.2%, and aluminum oxide 38.5%, potassium oxide 10.31%, respectively. These samples also contained the lesser amount of iron and magnesium. The specific surface areas vary from 13.11 to 14.65 m2/g. The main mineral compound of both mica samples was muscovite (KAl2(AlSi3O10)(OH)2. There is negligible influence of the sample’s location on the chemical and mineralogical compositions of the mica.

Бодончийн голын гялтгануурын найрлага, шинж чанарын судалгаа

Хураангуй: Монгол оронд гялтгануурын орд газрууд цөөнгүй байдаг хэдий ч гялтгануурын нөөцийг нарийвчлан тогтоож, химийн найрлага болон эрдэс зүйн судалгааг хийсэн дорвитой судалгааны ажил төдийлөн байхгүй байна. Бид энэхүү судалгааны ажилдаа Ховд аймгийн, Алтай сумын Бодончийн голын гялтгануурын ордын ил газрын гадарга (гялтгануур-1) болон гүнийн (гялтгануур-2) гэсэн хоёр дээжийг сонгон авч шинж чанар, эрдэс бүрдэл зэргийг нарийвчлан судаллаа. Энэхүү судалгааны ажлын гол ач холбогдол нь өөрийн орны шаварлаг эрдсийг ашиглан шинэ материал гарган авах буюу өөрөөр хэлбэл, шаварлаг эрдсийг янз бүрийн нөхцөлд хүчлийн уусгалтанд оруулан нано нүх сүвэрхэг материал гарган авах ажлын үндсэн суурь судалгааны материал болох юм.Гялтгануурын дээжнүүдийн химийн найрлагыг рентгенфлуоросценц (XRF), эрдсийн найрлагыг рентгендиффрактометр (XRD), функциональ бүлгүүдийг нил улаан туяаны спектроскопийн арга (FTIR) болон нунтгийн хувийн гадаргуугийн талбайг багажит шинжилгээний аргаар (BET) тус тус тодорхойллоо.Химийн найрлагын хувьд гялтгануур-1 дээжинд цахиурын оксид 45.68%, хөнгөнцагааны оксид 31.22%, гялтгануур-2 дээжинд цахиурын оксид 45.2%, хөнгөнцагааны оксид 38.5% тус тус агуулагдаж байна. Мөн бага хэмжээний төмөр болон магни агуулсан байгааг тогтоолоо. Дээжнүүдийн хувийн гадаргуугийн талбай 13.11 - 14.65 м2/г байна. Гялтгануурын эрдсийн найрлагын судалгаагаар дээрхи 2 дээжинд голлон мусковитын (KAl2(AlSi3O10)(OH)2) төрлийн эрдэс байгааг тогтоолоо.

Түлхүүр үг: гялтгануур, мусковит, шаварлаг эрдэс, биотит .