bluuebunny/crossref_metadata_2025 huggingface dataset:
Conservation Design and Scenario for Flood Mitigation on Arui Watershed, Indonesia
Authors: Mahmud Mahmud , Kusumandari Ambar , Sudarmadji Sudarmadji , Supriyatno Nunuk
Published: January 2020

Flooding has been natural disaster in Indonesia and elsewhere. This research is designed to create scenarios and designs conservation to mitigate flooding disaster.  Data potential ,vulnerability, and duplicated river covering 0.25% of the targeted flooding area were collected and analysed. Five disain of conservation, natural river as control, river normalization, normalization with gabion stone, river straigtening, and straigtening with gabion stone, are proposed, and main targeted responses of these five scenarios are river current velocity. Effectiveness scenarios were analysed using Anova and Tukey test. The results showed that alignment with gabion stone was the most effective scenario for flooding mitigation since this was the most effective in increasing river current velocity. This could prevent riverbank occurrence of avalanche, accelerate river current, overcome flooding, and prevent future flooding. Other scenarios likes dead clicth ended-hallway, canalization, and riparian reclamation are also possible implemented.
Modernization of Agriculture and Use of Information and Communication Technologies by Farmers in Coastal Yogyakarta
Authors: Subejo Subejo , Untari Dyah Woro , Wati Ratih Ineke , Mewasdinta Gagar
Published: January 2020

In the development process, Information and Communication Technologies (ICTs), which also commonly referred to as electronic media or cyber media have been acknowledged as a new instrument that could facilitate the need of new information and innovation for rural people or farmers. However, several studies reported that extension and communication based-electronic media in developing countries encounter more problems rather than in developed countries. This research aims to investigate the ownership, access, utilization or functions of ICTs for obtaining information supporting the daily life of farmers and for promoting various farming activities in the coastal area of Kulon Progo Regency Yogyakarta. The research method of the study was a descriptive method that has been conducted by a mixed method. The study found that in line with modernization in agriculture, farmers have been using conventional and new electronic media including television, radio and mobile phone with function for getting new information. Conventional electronic media are still dominant while the use of new electronic media has been gradually increasing. Information gathered from ICTs includes social, cultural, economic, health and environmental issues. The use of new electronic media particularly the internet via smartphone has newly started to be utilized among farmers in the coastal farming area who intensively engaged in horticulture crops cultivation mainly for getting and exchange the market information. Information on technological innovation is still dominant among farmers. Better infrastructure and mobility access, improvement of telecommunication network and development of content and format of information provided by new media will be prospective in the future
Waste Scavenging and Its Contribution for Survival and Urban Recycling in Kota Kinabalu City, Sabah, Malaysia
Authors: Mapa Mohammad Tahir
Published: January 2020

High generation of solid waste has been identified as one factor contributing to the world’s environmental problems, and the decrease in suitable landfill sites and scarcity of natural resources is creating greater demand for remanufacturing and reuse. This study aims to examine the contribution and issues embedded in scavengers group to achieved high rate of recycling in waste management program. In order to answer the research objective, this research utilized in-depth interviews conducted with scavengers group. This study revealed scavenging activity is an important element in waste management with positive impact on the economic and environment. Therefore, to support this, the scavengers group need to be part of the government’s attempt to realise its recycling objectives.
The Role of Riverway in The Spreading of Vernacular Architecture in South Sumatra, Indonesia
Authors: Oktarini Maya Fitri
Published: January 2020

The development of past settlements was supported by riverways connecting many regions with ethnic diversities. Inter-ethnic dissemination and contact created new cultural combinations. In the southern part of Sumatra, there are two types of stilt houses: highland architecture and lowland architecture. Both architectures are developed by different ethnic groups spread along different riverways. This study focuses on identifying and analyzing the influence of the riverway in the typology of the vernacular stilt house. The architectural typology data was confirmed by field observations and interviews. The analysis was carried out through the Geographic Information System to correlate the influence of the riverway and the ethnic culture on the distribution of the architecture and its transformations. The results show that the river as a transportation route takes up a more dominant role in the spread of architecture than the boundary of the ethnic culture. The cultural significance shows that the highland architecture in the upstream area has a more original and simpler character than the lowland architecture in the downstream area. The riverway exposes diverse cultures to blend into more complex architecture.
Numerical prediction of the groundwater drawdown impact in Jakarta
Authors: Nursyriwan Iwan , Bisri Muhammad , Montarcih Lily , Suhartanto Ery
Published: January 2020

An excessive groundwater usage is happening in Jakarta, Indonesia, due to the population growth and industrial development so that it experiences a significant groundwater drawdown which could enhance the risk of seawater intrusion and land subsidence. Existing conditions in 2018 show that seawater intrusion occurred at the Western and Central coastal area and land subsidence happen in the Northern and Central part. This research, a numerical simulation, is conducted by modeling such causality during the critical period, the next 20 years. The result shows that for every groundwater drawdown of 10 m/year, it will cause intrusion 0.7 km/year in the Western and Central and 1.1 km/year in the Eastern area after 2028. The 10 m/year groundwater drawdown also results in land subsidence of 5.7 cm/year in the Northern and 2.5 cm/year in Central Jakarta. This result is useful as an input for groundwater management policies and to prevent the environmental impacts occurred at other large coastal cities.
Characterization of New Cellulose Fiber from the Molina (Lagenaria Siceraria) Plant
Authors: Saravanan N. , Sampath P.S.
Published: January 2020

This research explores the extraction and characterization of natural fiber from the agro-waste of Lagenaria siceraria (LS) plant stem (commonly known as bottle guard). The extracted fiber from the waste stems has high cellulose content (79.91 %) with good tensile strength (257–717 MPa) and thermal stability (withstand up to 339.1°C). The huge percentage of crystalline index (92.4%) with the crystalline size (7.2 nm) as well as low density (1.216 g/cm3) of the LS fiber renders their possibility to use as an effective reinforcement material in lightweight eco-friendly composites for various industrial applications.
A novel isolated 36-pulse AC-DC converter for line current harmonic mitigation
Authors: Abdollahi Rohollah
Published: January 2020

In this paper, a novel delta/tapped star transformer for 36-pulse AC-DC converter configuration is designed, modeled, simulated and developed to feed isolated DC varying loads. The proposed AC-DC converter is suitable for large current rating rectifiers such as electrowinning, electrochemical processes, induction heating, etc. Its main feature is its reduced kilovolt-ampere (kVA) rating. The circuit has been designed for retrofit applications, a delta/tapped star-connected transformer platform is also included in the converter. First, we have simulated the proposed scheme via Matlab/Simulink software supplying different load conditions. Then, it has been implemented based on the motivation we have gained throughout the simulation results. The results show significant improvement in power quality indices (according to the IEEE-519) at the point of connection to the utility. We achieve less than 4% of input current total harmonic distortion (THD) with our proposed configuration for supplying different load scenarios. Moreover, we achieve a satisfying power factor (almost unity) for DTCIMD operation. Also, a prototype of the proposed transformer-based 36-pulse ac–dc converter has been developed, and test results are presented to validate the developed design procedure and the simulation models of this ac–dc converter.
The relationship between the deformationand the indentationsize effect (ISE)
Authors: Petrík J. , Blaško P. , Mihaliková M. , Mikloš V.
Published: January 2020

The aim of the submitted work is to study the relationship between the local deformation and the Indentation Size Effect (ISE). A local value of reduction of the area (Z) was used as the measure of the deformation. Applied loads in the micro-hardness test ranged between 0.09807 N to 0.9807 N. The micro-hardness was measures on the cross section in the longitudinal axis of the fractured sample after the uniaxial tension test. The material of the sample was 99.5% aluminium. The influence of the load was also evaluated by Meyer's index n, PSR method and Hays therefore on the ISE statistically significant. The ISE is normal in the areas with high deformation, on the contrary, in areas with low deformation it has the "reverse" character. The difference between load independent "tru hardness" and measured micro-hardness HV0.05 increases with increasing deformation
Synthesis and characterization of gold nanoparticles on titanium dioxide for the catalytic photodegradation of 2,4-dichlorophenoxyacetic acid
Authors: Torres E. Romero , Arzaluz M. Gutiérrez , Alvarez V Mugica , Reyes L. González , Rodríguez M. Torres , Morales F.J. Tzompantzi , Flores C. Tzompantzi
Published: January 2020

The photocatalytic degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) using a Au/TiO2 catalyst and ultraviolet (UV) light energy source (9 mW/cm2) discussed. Gold nanoparticles were synthesized by controlled urea reduction and deposited on titanium dioxide (TiO2) by the deposition-precipitation method. The average size of the nanoparticles was 6-8 nm. X-ray diffraction (XRD) characterization confirmed that TiO2 was present in the anatase phase, whereas the presence and particle size of gold were determined by transmission electron microscopy (TEM). The results of the degradation showed that the activity of TiO2 was improved when Au nanoparticles were present on the surface. The reactions were performed at atmospheric pressure and room temperature.
Application of natural minerals for in-situ catalytic pyrolysis of orange peel
Authors: Vargas Daniela Xulú Martínez , Rangel Ladislao Sandoval , Maldonado Carolina Solís , De La Rosa Javier Rivera , Ortiz Carlos J. Lucio , Rivera Gloria Dimas , Delgado Norma A. Ramos , Domínguez Alberto Mendoza
Published: January 2020

Natural mineral catalysts dolomite and clinoptilolite were evaluated in their calcined and non-calcined form for application in the catalytic in-situ pyrolysis of orange peel. Biomass pyrolysis improved when using calcined catalysts, with an increase in biogas yields (5.4 and 5.2% increase for dolomite and clinoptilolite, respectively), while non-calcined catalysts promoted higher condensate yields with an increment of 21.3 and 16.2% for dolomite and clinoptilolite compared with the calcined catalyst tests. Characterization of the condensate fraction with GC-MS showed formation of less oxygenated organic molecules in the pyrolysis tests, with an increase of 66% and 139% in the relative areas of organic compounds with an atomic content lower than 20%, when calcined dolomite and clinoptilolite were used, respectively, compared with the non-calcined catalysts. A prominent formation of Limonene was also observed. Syngas analysis with GC-TCD showed calcined clinoptilolite promoted higher hydrogen contents, while calcined dolomite showed increased CO and CO2 production at the highest pyrolysis temperatures. The presence of catalyst almost always pro-moted higher primary gas generation when compared with the non-catalytic test. The kinetic study of the catalytic pyrolysis of orange peel showed calcination of the natural minerals promotes a decrease in the apparent activation energy and an increase in the kinetic constant of the process, which shows the promising application of natural minerals as catalysts for biomass pyrolysis applications.
Algorithms for the generation of autonomous routes
Authors: Urrea Claudio , Pascal José
Published: January 2020

In this work, the performance of two algorithms that allow a mobile robot to guide itself as it explores its surroundings is studied. For that purpose, the performance of harmonic potential fields and A* algorithms is considered. The algorithm offering the best service to a real mobile robot in its future implementation is selected based on test results. Initially, the robot would not know in which environment it is located, and would only obtain limited information about its surroundings by means of its sensors, thus implying that the robot has to trace the route dynamically from the motion starting point to the goal. To evaluate these algorithms, critical surroundings are assumed, which are formed by the possible U- and T-shaped structures that the robot could detect in an unknown environment. The evolution of the dynamic performance of these algorithms generates solutions that represent local minima between the robot and the point objective. The selection criterion of the best algorithm is mainly based on the ability to find the point objective in environments with strong local minima, which need to be solved by means of the studied algorithms to allow the robot to avoid and/or get out of complex structures. Finally, the efficiency of the algorithms in the calculation process, i.e., the time taken by them to reach the point objective satisfactorily, is analyzed and presented, considering that the shorter the time, the greater the selection weighting.
Synthesis of hybrid materials, immobilization of lipase in SBA-15 modified with CaO
Authors: Méndez J. C. , Arellano U. , Solís S. , Asomoza M. , Lara V. H. , Padilla A. J. , Wang J.A.
Published: January 2020

Mesoporous silica materials (SBA-15) doped with calcium (Ca) at 1, 3 and 5% w/w were synthesized in order to immobilize candida rugosa lipase (CRL), through the adsorption method. It was found that calcium (Ca) is present as CaO, highly dispersed on the surface of SBA-15, the specific area of SBA-15 decreases on incrementing CaO content. The environmental pH influences the adsorption of CRL due to the polarization of positive charges below the isoelectric point (IEP) whereas the Ca-SBA-15 materials present negative charges. The adsorption model proposed for CRL is about the accessible surface of the material, as this has a size of 7 nm and the Ca-SBA-15 present pores at an interval of 3 nm.
Design, construction and control of a SCARA manipulator with 6 degrees of freedom
Authors: Urrea Claudio , Cortés Juan
Published: January 2020

The design and implementation of a robot manipulator with 6 Degrees Of Freedom (DOF), which constitutes a physical platform on which a variety of control techniques can be tested and studied, are presented. The robot has mechanical, electronic and control systems, and the intuitive graphic interface designed and implemented for it allows the user to easily command this robot and to generate trajectories for it . Materializing this work required the integration of knowledge in electronics, microcontroller programming, MatLab/Simulink programming, control systems, communication between PCs and microcontrollers, mechanics, assembly, etc.
Escherichia coli bacteria inactivation employing ozone and ultraviolet radiation using a reactor with continuosly flowing water
Authors: Arias A. N. Hernández , Sierra B. Jaramillo , Méndez B. G. Rodríguez , Eguiluz R. Peña , Callejas R. López , Cabrera A. Mercado , Alvarado R. Valencia , Díaz D. Alcántara
Published: January 2020

The study on the inactivation of Escherichia coli (E. coli) bacteria in water flowing continuosly in a treatment system based on two different reactors is presented. The bacteria inactivation is achievedin a water volumer of 500 mL inoculated with an E. coli concentration of 1000-1100 ppm and, subsequently, transferred to a rectangular geometry reactor subjected to UV radiation with an energy per volume of 1.44 J/mL. Inactivation efficiency of E. coli bacteria in the water of 99.32% was attained in a total treatment time of 180 seconds.
CoMoW / Al2O3-MgO-Li2O Catalytic formulations for DBT hydrodesulphurization
Authors: Casados D.A. Solis , Blancas J. Blancas , Alarcón L. Escobar , Aguilar J. Escobar , Klimova T. , Zavala F. González
Published: January 2020

Low acidity catalytic formulations were prepared incorporating MgO and Li2O to the conventional CoMoW / Al2O3 catalysts. The CoMoW active phases were impregnates using an ammoniacal solution containing the metallic complexes as citrates. A high dispersion of the Co, Mo and W species in octahedral coordination, inhibiting the agglomeration towards phase like MoO3, WO3 and Co3O4, was attained. The obtained formulations preserve the catalytic activity in the hydrodesulphurization (HDS) reaction of dibenzothiphene (DBT), enhancing the selectivity towards the direct desulphurization route. The prepared formulations show a lower hydrogenation function due to its low acidity.
Performance enhancement of photovoltaic systems with passive lossless cuk converter using non linear controller
Authors: Kanimozhi K. , Rabi B. Raja Mohamed
Published: January 2020

The A soft switched Cuk converter with Improved Perturb and Observe (P&O) based Maximum power point Tracker (MPPT) that uses a HybridSliding Mode (HSM) Controller is proposed to enhance performance of Photovoltaic (PV) generator. Conduction losses, voltage stress, and switching losses are reduced in soft switched Cuk converter by introducing a snubber cell which in turn improves Cuk converter efficiency. Sliding Mode Controller (SMC) is implemented in an Analog-Digital way. The main benefit of the proposed solution is that it is possible to split the sliding Mode (SM) control equation in two terms: the first one is characterized  by a combination of signals  wich can be defined as fast and a second part obtained by a combination of signals which can be defined as slow. The slower term suits the digital implementation because it van be treated as a linear control which works on the low frequency range and faster term implemented in analog way. Performance analysis of the Passive soft switched Cukconverter and conventional converter is ilustrated by simulation and experimental methods for various irradiation changes. Peak power is harvested from PV panel and optimal operating point is detected using HSM based MPPT method. The prototype model developed with SMP085P module validates the performance of modified Cuk converter.
Grid connected DFIG based wind energy conversion system using nine switch converter
Authors: Datta Subir , Mishra J. P. , Roy A. K.
Published: January 2020

In this paper, an attempt is made to develop a speed sensor DFIG-based grid-connected Wind Turbine (WT) system with Nine switch converter (NSC) instead of Back-to-back converter (B2BC). The NSC the merits of reduced number of switching devices and cost, more efficient and reduced installation area over B2BC. a new control scheme, with the use of rotor speed sensors from generator, is proposed for NSC to track the maximum power point (MPP) by controlling the active power flow between rotor and grid under varying wind velocity at unity power factor (UPF). Furthermore, 120 o discontiunuous modulation scheme is also incorporated with proposed control scheme to minimize switching losses of the system. The complete study system has been simulated in MATLAB/simulink platform and all the simulation selults are analyzed in details to study the performance of the system. Simulation results ilustrate that the NSC based WT system and its proposed control scheme can work at its optimum power level for an extensive range of wind velocity and also competent to achieve independent control on flow of both active and reactive powers.
TRANSPORTASI PARA PEJUANG PADA MASA REVOLUSI FISIK DI BALI 1945-1950
Authors: Astika Pidada Ida Bagus
Published: January 2020

On behalf of the Indonesian nation IR. Sukarno who was accompanied by Drs. Mohammad Hatta on August 17th, 1945 proclaimed Indonesian independence on Jalan Pegangsaan Timur No. 56 Jakarta at 10:00 am. News of the proclamation of Indonesian independence was only heard in Bali on August 23rd 1945 since the return of Mr. I Gusti Ketut Puja from Jakarta. News of the proclamation arrived late in Bali due to lack of communication and transportation with the island of Java. At this time Japan was still showing an attitude of power in Bali, therefore on December 13th 1945 a general attack was carried out against Japanese protests throughout Bali. This attack turned out to be a failure because Japan had known in advance. Since it was impossible to get weapons in Bali, I Gusti Ngurah Rai and his friends finally went to Java to report on the situation in Bali and asked for weapons. After some time living on the island of Java on April 4th, 1946 I Gusti Ngurah Rai and his friends finally returned to Bali where it landed at Yeh Kuning. From here I Gusti Ngurah Rai continued his journey to the village of Munduk Malang. From the village of Munduk Malang, I Gusti Ngurah Rai carried out an attack on the Dutch / NICA ambushes around him. Due to the position of I Gusti Ngurah Rai headquarters and its troops being known by the Netherlands / NICA, it was decided to hold a "Long March" or also known as "The June-July Trip". Long March starts by walking from Bengkel Anyar Village by climbing Mount Batukaru to Mount Agung. The purpose of holding a long march is to increase the people's enthusiasm, divert Dutch attention to the east, and facilitate assistance from Java to Bali. In addition to the fighters using walking during the physical revolution in Bali to be able to connect with other fighters also used transportation. Transportation is used by fighters for long trips and when the situation is safe. Transportation that is used at this time besides walking also uses such as truck, sedan, pickup, bus, bicycle, dock, cart, and boat for the sea. With this means of communication between the fighters remain connected so that the struggle in Bali can last long enough to face the Netherlands / NICA.
MENINGKATKAN KESAN POSITIF PEMBACA TEKS PAKET PERJALANAN WISATA MELALUI KONJUNGSI
Authors: Adi Rajistha I Gusti Ngurah , Detrichyeni Winaya Made
Published: January 2020

Giving a positive impression in the text made is a basic thing to do in order to make readers feel comfortable reading texts given. However, not all writers can make texts that can express a positive impression. Application of grammatical cohesion, especially conjunction, is one of some ways that can be applied to reduce bounce rate to other websites. The aim of this research is to give a general overview of using conjunction in tour package texts by conveying semantic relation provided by all kinds of conjunctions. The data of this research were 41 tour package texts taken in the form of *.txt from a website named ganggabali.com. The data of this research were analyzed by applying the grammatical cohesion theory proposed by Halliday and Hasan (1976). The result of the analysis was presented by using formal and informal methods. This research shows all kinds of conjunction were applied to convey semantic relations among sentences in tour package texts. The use of the conjunctions, excluding other factors, can give readers a positive impression because by using conjunctions, the website owner can convey the semantic relation based on the kinds of conjunction applied.
Ageing in Southern Europe. Emerging Perspectives and Challenges for Sociology
Authors: Marcaletti Francesco , Iñiguez-Berrozpe Tatiana , Garavaglia Emma
Published: January 2020

The process of transitioning to an ageing population has occurred later, but nevertheless more intensely, in Southern Europe than in other regions. Consequently, these countries have been forced to politically, socially and economically adapt to this significant challenge. Sociologists play an important role in identifying and understanding social trends and issues, as well as in contributing to the design of public policies across Europe. However, research has tended to explore issues of ageing populations in Northern Europe, in spite of the notable demographic shifts and contextual specificities of Southern Europe. In response, this study has a dual objective: first, to collect the theoretical and methodological contributions of authors from or focusing on Southern Europe, and second to explore the originality of studies that belong to Southern European sociological traditions. In order to systematise the study, the theoretical paradigm of Marshall’s classification of social science theories in the field of ageing is used. Specifically, the present study incorporates the topics of active ageing, adult education and ageing at work as the main foci of analysis. The results of this theoretical study show that the sociology of Southern Europe can contribute significantly both to the issue of ageing and to public policies for its management, in the process providing a more holistic and human-centred approach.
EXPLORING ENGLISH TEACHERS' BELIEFS ON THEIR TEACHING PROFESSION
Authors: Fajrinur Fajrinur
Published: January 2020

The aim of this study is to explain the influence of the English teachers’ beliefs toward their teaching profession in Bireuen District, Aceh Province. This is a quantitative study which involved thirty English teachers as the respondents. These teachers teach at six high schools in Bireuen. The schools were purposively selected to cover the broad area of Bireuen District. Some of the schools were in the rural area, some are in the city. Five English teachers from each high school were randomly selected. The data collection was done using questionnaires. It can be concluded from the answer that in general the teachers have positive beliefs toward their profession, they satisfied with their job, they feel confidence about their job, it can also be seen from the answers that most teachers received appraisal and feedback from other teachers and most of the teachers believe that appraisal and feedback can increase teaching passion. Beliefs about overall job-related principles, job satisfaction, self-efficacy and appraisal and feedback give big influence toward their teaching profession as English teachers. This big influence is affecting teachers is various way. Beliefs appear to have the strongest impact on teacher learning, followed by changes in teacher behavior and last on students learning.
ACEHNESE ONOMATOPOEIAS: INVESTIGATING, LISTING, AND INTERPRETING THEIR MEANINGS
Authors: Muliawati Ida , Yusnida Dara
Published: January 2020

Sound-imitating words, called onomatopoeia, presents in most of languages in the world including Acehnese language, one of traditional languages in Indonesia, in which a great deal of onomatopoeias exist in it due to its unique constructions of onomatopoeia. This research aims at finding out kinds of Acehnese onomatopoeias understood and spoken among native Acehnese people by using Pidie dialect. Thus, five people in the Pidie Jaya regency were sorted out to be the subject informants by actualizing purposive and snowball technique. Moreover, a descriptive qualitative method was manifested in the research by actualizing some instruments to get the data such as structured interviewing and documentation. Hence, all of the data were interpreted in words by listing, transcribing their phonetics orderly, as well as describing both their function and meaning. A three-step analysis – data reduction, data verification, and data display-- was employed to describe the data gathered.  Result of the research reveals that Acehnese Onomatopoeias covers a wide range of expressions in sound-imitating words which are categorized into three big classes; Phonomimes which includes auditory impressions of various imitative sounds of nature; Phenomimes -- mimetic words to describe objects’ condition and human’s activities; and Psychomimes – symbolizing psychological state or inner feelings. Still, most of Acehnese onomatopeic words are in forms of repetition and nasalization which seems to be more unique compared to other languages.
THE PERCEIVED INFLUENCE OF PART-TIME TEACHING ON STUDENTS’ PERFORMANCE IN MICRO-TEACHING CLASS
Authors: Khasinah Siti , Masna Yuliar , Siregar Anita
Published: January 2020

The main objective of this study was to examine the perceived influence of part-time teaching on students’ performance in Micro-Teaching class. A quantitative research approach using questionnaire was carried out to get the view of thirty students of 2014 intake year of Department of English Language Education, Faculty of Tarbiyah and Teacher Training, Universitas Islam Negeri (UIN) Ar-Raniry Banda Aceh. The findings indicated that students were helped by having part-time teaching through developing skills and confidence, reducing anxiety and fear, developing ability of managing classroom, increasing ability in selecting teaching goals and in preparation of lesson plans, proper worksheet, assessment tools, instructional media, and teaching methods. In addition, it supported them to improve their ability in asking questions and speaking in front of groups as well as to use time effectively. To conclude, part-time teaching has increased students’ skills in micro-teaching class.
Phytochemical screening and evaluation of phytotoxic activity of Solanum lycocarpum (Solanaceae) ripe fruit
Authors: Mendes Iara Cotta , Amado Paula Avelar , Morais Melissa Grazielle , Lima Luciana Alves Rodrigues dos Santos
Published: January 2020

The Solanum lycocarpum species, belonging to the Solanaceae family, is popularly known as the wolf fruit and is used in folk medicine for the treatment of obesity, diabetes, and cholesterol reduction. Thus, the aim of this study was to perform phytochemical screening of the ethanol extract from the ripe fruit of S. lycocarpum to verify the presence of the main groups of secondary metabolites and to evaluate the phytotoxic effect on Lactuca sativa (lettuce) and Allium cepa (onion) seeds. The fruits of S. lycocarpum were collected, crushed and percolated with anhydrous ethanol and the solvent was dried in a rotatory evaporator to obtain the ethanol extract. In the phytotoxicity evaluation, the results showed that the ethanol extract was able to completely inhibit the growth of hypocotyl and radicle of L. sativa (lettuce) seeds in all concentrations tested. In A. cepa (onion) seeds, a concentration of 500 μg per plate was able to inhibit the growth of the hypocotyl and radicle by 100%. The metabolites detected in the extract were alkaloids, coumarins, flavonoids, and condensed tannins. The phytotoxic activity can be correlated to the presence of these compounds.
Preliminary Angiosperm Checklist in an Area South of the Madeira River, Manicoré, Amazonas, Brazil
Authors: Coelho Caroliny Almeida , Pereira Marta Regina Da Silva , Amorim Bruno Sampaio
Published: January 2020

Due to the large extent of the Amazon rainforest, research has historically focused on easily accessible locations. Thus, much of this region has little information available about its richness and plant distribution. Located south of the Madeira river, Municipality of Manicoré has a high number of phytophysiognomies, which may indicate the existence of a greater diversity of plant species. Therefore, from the compilation of previously collected records and based on botanical expeditions, this study evaluated the diversity and richness of angiosperms in Manicoré. We found 801 species, 409 genera and 106 families. Our data record 47 new occurrences for Amazonas State. Of these new occurrences, 12 are also the first record for the northern region. In addition, we have identified a new vine species of the genus Mandevilla Lindl. Given the well-known sample deficiency of the Amazon region, and considering the countless anthropogenic pressures that cities south of the Madeira river have been facing, knowledge of flora becomes increasingly urgent.
Honeybees and their products as bioindicators for heavy metal pollution in Malta
Authors: Borg Daniel , Attard Everaldo
Published: January 2020

In this study, honeybees, propolis, air, soil and plant samples were gathered from two contrasting sites Ħal Luqa (industrial area) and L-Imġarr (agricultural area) in mainland Malta. Superficial heavy metals were extracted from the samples and tested using microwave plasma-atomic emission spectrometry in order to determine the concentrations of Ag, As, Cd, Cr, Cu, Pb, Sn, Zn, Ni and Hg. The honeybee and propolis samples were digested using nitric acid and hydrogen peroxide and then ashed using a muffle furnace in order to prepare mineral solutions. Simultaneously the air samplers, soil and plant samples were washed using de-ionised water in order to extract the heavy metals settling on sample surfaces. Different methods of filtration were used in order to extract the metals from the surfaces of the samples. The most abundant metals in honeybees and propolis, and on plant and soil samples, were Sn and As (p<0.0001). In air samples0, the most abundant metal was Pb followed by Sn (p<0.05). These findings indicate that the honeybee and its propolis are good indicators for Sn and As contamination.
The influence of the partially europium substitution on the AC electrical properties of BiSr2CaCu2O6.5 ceramics
Authors: Özdemir Zeynep , Kılıç Mehmet , Karabul Yaşar , Erdönmez Seda , İçelli Orhan
Published: January 2020

In this work, EuxBi1-xSr2CaCu2O6.5 (where x = 0, 0.3, 0.5) samples were
prepared by solid-state reaction method and sintered at 950?C for 24 h. The
structural characterizations were done by X-ray diffraction, X-ray
fluorescence, scanning electron microscope and Fourier transformed infrared
spectroscopy. The thermal stability of the samples was also analysed by
thermogravimetric TG and DTA measurements. It was shown that
Eu0.5Bi0.5Sr2CaCu2O6.5 sample exhibited high dielectric constant and low
dielectric loss relative to BiSr2CaCu2O6.5 material. Thus, the dielectric
loss was lowered by heavy rare earth metal substitution on Bi-Sr-Ca-Cu-O
ceramics while the dielectric constant still remained high.
Temperature-dependent complex electrical modulus spectra obtained between
296 and 433K also revealed the temperature-activated relaxation process in
the materials which can be attributed to the Maxwell-Wagner type
polarization effect. Ultimately, it was suggested that the
Eu0.5Bi0.5Sr2CaCu2O6.5 ceramics may have a promising potential for
applications which require high dielectric constant with a low dielectric
loss.
Low-temperature impedance spectroscopic analyses of ceramic electrodes based on Mo and Co co-doped SnO2
Authors: Ferreira Diego , Vaz Isabela , Rubinger Rero , Buono Camila , Rocha Leandro , Ponce Miguel , Longo Elson , Simões Alexandre , Moura Francisco
Published: January 2020

Low resistive electrodes based on Co and Mo co-doped SnO2 were prepared by
the conventional solid-state reaction and sintered at 1250?C for 2 h.
Concentration of Co2O3 precursor was unchanged (1mol%), while MoO3 was
varied (0.25, 0.50 to 0.75mol%) to promote conductivity. The structural and
microstructural characterization revealed that the samples have a
rutile-type structure without secondary phases and large rutile grains with
low porosity. Electrical measurements on DC mode have shown a semiconductor
behaviour of the SnO2 samples doped with 0.25 and 0.75 at.% of Mo at
temperatures below 50K, indicating their suitability for low-temperature
electronic applications. Impedance measurements indicate reduced energy
barriers of less than 1meV formed between highly conductive crystallites for
the SnO2 samples doped with 0.25 and 0.75 at.% of Mo. The sample with Mo
content of 0.50 at.% presented a higher energy barrier at a few hundredths
of eV, with space charges at the crystallite boundaries.
Conservadorismo: ceticismo e anti-racionalismo político
Authors: Campos Pimentel Pablo Fernando
Published: January 2020

Este artigo procura apresentar uma visão qualificada acerca do ceticismo político em pensadores de tradição de língua inglesa denominados conservadores. Essa tradição de pensamento demonstra uma profunda desconfiança com respeito ao que é possível em termos de aprimoramento humano no que tange a esfera da política. É possível conceber esse ceticismo como herdeiro de um ceticismo epistemológico, como o de Hume. Perceberemos que o ceticismo e anti-racionalismo de Edmund Burke inspirou obras como a de Michael Oakeshott, que levanta a discussão a respeito de duas vertentes políticas, diferentes daquelas comumente debatidas, a saber, aquilo que este denominou política da fé e política do ceticismo. Delimitando, assim, os últimos quinhentos anos de história da Europa como sendo fruto da flutuação entre um polo e outro.
Novo horizonte do sistema de cognição ético-pragmático na atuação judicial
Authors: D'Oliveira Júlio César
Published: January 2020

O sistema de Justiça brasileiro está em crise e talvez uma das causas principais deste declínio seja o contínuo abandono da hermenêutica. O método interpretativo utilizado por grande parte dos operadores do Direito evidencia a valorização da letra fria da lei em detrimento das questões concretas acerca dos fatos e dos indivíduos envolvidos defasando a aplicação da norma numa dimensão humanitária. Com tal pressuposto, o instituto filosófico denominado Pragmatismo pode oferecer ao mundo jurídico ferramentas necessárias para a atuação de seus operadores sobre as questões essenciais dos problemas jurídicos fundamentais, dando-lhes, tanto quanto possível, uma resposta ou, ao menos, um caminho ético. Para tanto, o resgate da hermenêutica jurídica, com uma abordagem semiótica, é absolutamente imprescindível, dado o seu papel vetorial durante a fase cognitiva dos casos. Mas, antes deste procedimento cognitivo, sugerimos, nesta espécie de rito de ofício, a inserção do exercício mental de suspensão do juízo, denominado epokhé com o propósito de assear as vias interpretativas. Diante de um cenário no qual se percebe movimentos de judicialização extremada, a atuação judicial pode se valer do método proposto visando a orientação comportamental concreta ante os fenômenos, que objetam da simples metodologia oferecida pela razão dogmática, com excesso de teorias, por vezes longínquas da realidade. Enfim, o escopo deste artigo é oferecer, pareado com a revitalização da hermenêutica jurídica, elementos para melhor entendimento dos casos e proporcionar o desenvolvimento na aplicação da norma, com vistas à realidade dos fatos e evolução humanística da prática judicial.
Boêmios, como ele
Authors: Ferrara Lucrécia D`Alessio
Published: January 2020

O objetivo desse artigo é refletir sobre fragmento de um texto de Peirce apresentado pelo prof. Nathan Houser, tendo em vista apreender as possíveis relações que se apresentam entre a dimensão social do conhecimento, a lógica triádica que preside as categorias da experiência em suas distintas dimensões e o exercício excêntrico da produção cognitiva.
A IDEIA DE JUSTIÇA E O PENTECOSTALISMO ASSEMBLEIANO NO BRASIL
Authors: Washington James
Published: January 2020

Este artigo busca trabalhar de maneria teórica o conceito de justiça em John Rawls e Charles Taylor, entendendo este conceito, dentro da observância aos príncipios liberais da liberdade, igualdade e pluralidade. Diante disso, elencamos questões como consenso sobreposto, véu de ignorância e reconhecimento, como categorias chave para a nossa análise. Este tema guarda em si mesmo uma importância nos debates sobre o funcionamento da democracia contemporãnea, sem deixar de lado as implicações empíricas, trazendo com isso reflexões sobre a realidade brasileira. O caso brasileiro é apresentado com vista ao papel das igrejas pentecostais neste processo democrático liberal, em especial, colocamos o papel das Assembleias de Deus, bem como a luta travada entre as perpectivas religiosas e laicistas no mesmo cenário brasileiro.
O AMÁLGAMA ENTRE RELIGIÃO E POLÍTICA NA RÚSSIA
Authors: Neto Francisco Labriola
Published: January 2020

O estudo tem como objetivo analisar e reconhecer a simbiótica relação entre as dimensões religiosa e política na história russa e o quanto as nuances complexas desse processo nos fornecem valiosos subsídios para um estudo ainda mais amplo da existência de conexão dessas instâncias nas demais sociedades. Conquanto tenha havido um período de instauração ateísta oficial na Rússia, procurou-se distinguir fatos históricos e proceder-se à sua análise, de modo a visualizar claramente a interconexão das esferas religiosa e política e sua interdependência, nem sempre percebidas por uma simples análise perfunctória.
A FACE DO GOVERNANTE OPRESSOR: CARACTERIZAÇÕES IRÔNICAS DOS REIS ESTRANGEIROS EM DANIEL E ESTER
Authors: Ebinger Kenny Gomes , Silva Luciano Geraldo
Published: January 2020

Esse artigo se propõe a investigar a maneira pela qual Nabucodonosor e Assuero são caracterizados na narrativa dos livros de Daniel e Ester. Para isso, ele parte de uma perspectiva literária da narrativa bíblica e procura caracterizar os personagens por meio do seu discurso, ação, ponto de vista, destino e situações que enfrenta. O trabalho assume que a ironia cumpre um papel fundamental nas caracterizações de reis opressores e sintetiza as principais ironias encontradas em cada personagem. O trabalho conclui que caricaturar o opressor com ironia e comicidade é um ato de resistência.
A IMPORTÂNCIA DO MICROSCÓPIO ÓTICO NA REVOLUÇÃO CIENTÍFICA - DAS PRÁTICAS EDUCACIONAIS À REPRESENTAÇÃO MUSEOLÓGICA
Authors: Teles Nuno , Fonseca Maria João
Published: January 2020

ResumoNeste artigo é apresentada uma reflexão sobre os museus de ciência a partir da sua vertente educativa ligada às questões da representação museológica. Em discussão está a importância do microscópio como objeto de destaque museológico aliada ao seu contributo para o ensino das ciências. Numa primeira abordagem é feita uma contextualização histórica sobre a descoberta, desenvolvimento e importância deste instrumento, seguida de uma contextualização científica sobre a sua utilização como ferramenta de investigação e educação. Numa segunda abordagem serão apresentados os campos de aplicação deste equipamento como instrumento educativo ao longo do século XIX até ao século XXI. Como exemplos serão referidos três museus nacionais de ciência: Museu de História Natural e da Ciência da Universidade do Porto; Museu da Ciência da Universidade de Coimbra; e Museu Nacional de História Natural e da Ciência da Universidade de Lisboa. Palavras-chave: microscópio; educação; museologia; história da ciência. Abstract This article presents a reflection on the role played by science museums from an educational point of view in connection with issues pertaining to museological representation. In discussion is the importance of the microscope as an object of museological prominence allied to its contribution for science teaching. In a first approach, a historical contextualization on the discovery, development and importance of this instrument will be provided, followed by a scientific contextualization on its use as an educational and research tool. In a second approach the fields of application of the microscope as an educational instrument from the 19th century to the 21st century will be outlined. Three science museums in Portugal will be used as examples: the Natural History and Science Museum of the University of Porto, the Science Museum of the University of Coimbra and the National Museum of Natural History and Science of the University of Lisbon.Keywords: microscope; education; museology; history of science.
A legalização da “nova ordem” no ensino da enfermagem: quando os ventos sopraram a favor.
Authors: Lopes Roberlandia Evangelista , Nóbrega-Therrien Silvia Maria , Araújo Perpétua Alexsandra , Andrade Abigail de Paulo , Ponte Michelle Alves Vasconcelos
Published: January 2020

ResumoObjetivou-se detalhar a Lei no 775 de 1949, mais especificamente seu Decreto de no 27.496, de 14 de novembro de 1949, destacando elementos de formação da Enfermeira e do auxiliar de Enfermagem. Estudo histórico de natureza qualitativa. Optou-se pela História Cultural como referencial teórico-metodológico. O estudo possui parecer no 1.509.938. Pós-nova ordem, é inserido outra categoria profissional, sob a égide do discurso da carência de pessoal para cuidar dos enfermos. Pela proposta da nova ordem, os auxiliares de enfermagem iriam ser submetidas a uma formação mais curta, com programa de ensino bem mais elementar nos diversos campos de saúde, sobretudo, hospitalares. Logo, constata-se a necessidade de conhecer a história da profissão para entender aonde se chegou ou aonde se chegará. Palavras-chave: História; Memória; Educação em Enfermagem. Abstract The objective was to detail Law No. 775 of 1949, specifically its Decree No. 27,496 of November 14, 1949, highlighting elements of the nurse's and nurse's training. Historical study of a qualitative nature. Cultural history was chosen as a theoretical-methodological reference. The study has opinion no 1.509.938. Post-new order, another professional category is inserted, under the aegis of the discourse of the lack of personnel to care for the sick. By the proposal of the new order, the nursing auxiliaries would be submitted to a shorter formation, with a program of education much more elementary in the diverse fields of health, especially, hospital. Therefore, it is necessary to know the history of the profession in order to understand where one arrived or where one will arrive. Keywords: Story; Memory; Education in Nursing.