bluuebunny/crossref_metadata_2025 huggingface dataset:
The Pengaruh Penggunaan Jurnal Belajar Terhadap Hasil Belajar Mahasiswa Pendidikan Biologi STKIP-PI Makassar pada Mata Kuliah Perencanaan Pembelajaran
Authors: Syarif St Humaerah
Published: January 2019

This research was quasi experimental with the purpose to determine the influence of using study journal toward study outcome of biology education students of STKIP-PI Makassar in lesson plan course. The research design is prestest-posttest control group design. The populations were students of Biology Education Program who conducting lesson plan of biologi subject in even semester (VI) of academic year 2017/2018. This research used random sampling technique to chose a control and an experimental class. The data collected by pretest and posttest. The data was collected analyzed by using descriptive and inferential statistic. The result showed that the average score of experimental class is 80,42 and control class is 75,33, standard deviation are 8,03 and 9,67. The result of hypotheses testing use Independent Samples T-test with SPSS for windows 20 program to get significance value is 0,03. The significance value 0,003 < α= 0,05, so H0 was rejected and H1 was accepted. It is showed that using study journal give positive influence to study outcome of biology education students of STKIP-PI Makassar in lesson plan course.
Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials
Authors: Barbosa Marcela N. , Costa Maria J. F. , Barbosa Maricele N. , Fernandes Jr. Valter J. , Salazar-Banda Giancarlo R. , Coriolano Ana C. F. , Reyes-Carmona Álvaro , Rodríguez-Castellón Enrique , Araujo Antonio S.
Published: January 2019

The adsorption of carbon dioxide on amino silanes-functionalized MCM-41 and SBA-15 materials is reported. The functionalization of mesoporous silicas was made by post-synthesis method, by impregnation of 3-aminopropyltriethoxysilane. The obtained materials were characterized by X-ray diffraction, scanning and transmission electron microscopies, nitrogen adsorption-desorption and X-ray photoelectron spectroscopy measurements. The carbon dioxide adsorption capacities for the samples were carried out under ambient pressures. The obtained results evidenced that amino-silanes with a terminal amine (–NH2) were functionalized through covalent coupling of this group on the surface of the channels in the ordered mesoporous silica, meaning that the amine is anchored on the surface of the bigger pores of the MCM-41 and SBA-15 support. For functionalized materials, the CO2 adsorption capacity of the AMCM-41 increased from 0.18 to 1.1 mmol·g−1, whereas for ASBA-15, it was from 0.6 to 1.8 mmol·g−1. The Lagergren kinetic algorithms were applied in order to validate the obtained results, evidencing the enhanced carbon dioxide adsorption capacity and stability of the functionalized ordered mesoporous molecular sieves.
Intelligent Fault Diagnosis Techniques Applied to an Offshore Wind Turbine System **
Authors: Simani Silvio , Castaldi Paolo
Published: January 2019

The fault diagnosis of wind turbine systems represent a challenging issue, especially for offshore installations, thus justifying the research topics developed in this work. Therefore, this paper addresses the problem of the fault diagnosis of wind turbines, and it present viable solutions of fault detection and isolation techniques. The design of the so--called fault indicator consists of its estimate, which involves data--driven methods, as they result effective tools for managing partial analytical knowledge of the system dynamics, together with noise and disturbance effects. In particular, the suggested data--driven strategies exploit fuzzy systems and neural networks that are employed to determine nonlinear links between measurements and faults. The selected architectures are based on nonlinear autoregressive with exogenous input prototypes, as they approximate the dynamic evolution of the system along time. The designed fault diagnosis schemes are verified via a high--fidelity simulator, which describes the normal and the faulty behaviour of an offshore wind turbine plant. Finally, by taking into account the presence of uncertainty and disturbance implemented in the wind turbine simulator, the robustness and the reliability features of the proposed methods are also assessed. This aspect is fundamental when the proposed fault diagnosis methods have to be applied to offshore installations.
Epigenetic Factors in Late-Onset Alzheimer’s Disease: MTHFR and CTH Gene Polymorphisms, Metabolic Trans-sulfuration and Methylation Pathways, and B Vitamins
Authors: Román Gustavo C. , Mancera-Páez Oscar , Bernal Camilo
Published: January 2019

DNA methylation and other epigenetic factors are important in the pathogenesis of late-onset Alzheimer’s disease (LOAD).  Methylenetetrahydrofolate reductase (MTHFR) gene mutations occur in most elderly patients with memory loss.  MTHFR is critical for production of S-adenosyl-L-methionine (SAM), the principal methyl donor.  A common mutation (1364T/T) of the cystathionine-γ-lyase (CTH) gene affects the enzyme that converts cystathionine to cysteine in the trans-sulfuration pathway causing plasma elevation of total homocysteine (tHcy) or hyperhomocysteinemia – a strong and independent risk factor for cognitive loss and AD. Other causes of hyperhomocysteinemia include aging, nutritional factors, and deficiencies of B vitamins. We emphasize the importance of supplementing vitamin B12 (methylcobalamin), vitamin B9 (folic acid), vitamin B6 (pyridoxine), and SAM to patients in early stages of LOAD.
Using Optimization to Solve the Dilemma of a Municipal Solid Waste landfill in Delaware Running out of Capacity Faster than Predicted
Authors: Gronwald Frank , Chang Shoou-Yuh
Published: January 2019

Municipal landfills play a vital role in disposing of the solid waste from a community. One of the biggest challenges landfill management face is when the available storage space is being reduced faster than the rate that was planned for. This shortening of the landfill lifecycle impacted the city of Wilmington, Delaware when it was found that their landfill had lost 11 years of its projected lifespan and would reach fully capacity within the next decade. In order to remedy the situation six alternative solutions were devised, with each having different costs (capital, operating, and transport) and varying lengths of landfill extension. This research used the principle of optimization via a LINDO program to determine which solution would achieve the longest landfill extension for the minimum total cost. Other constraints placed on the program include reducing the waste being sent to the landfill and to achieve a minimum of 25 additional years for the landfill. The calculated solution produced a cost reduction of $232.64 million dollars and 3.2 additional years of operation from the option that was eventually chosen by the landfill authority.
Structural Perspective on Revealing and Altering Molecular Mechanisms of Genetic Variants Linked with Diseases
Authors: Peng Yunhui , Alexov Emil , Basu Sankar
Published: January 2019

Structural information of biological macromolecules is crucial and necessary to deliver predictions about the effects of mutations—whether polymorphic or deleterious (i.e., disease causing), wherein, thermodynamic parameters, namely, folding and binding free energies potentially serve as effective biomarkers. It is to be emphasized that the effect of a mutation depends on various factors, including the type of protein (globular, membrane or intrinsically disordered protein) and the structural context to which it occurs. Furthermore, due to the intrinsic plasticity of proteins, even mutations involving radical change of the structural and physico-chemical properties of the amino acids (native vs. mutant) can still have minimal effects of protein thermodynamics. However, if a mutation causes significant perturbation of either folding or binding free energies, it is quite likely to be deleterious. Mitigating such effects is a promising alternative to the traditional approaches of designing inhibitors. This can be done by structure-based in silico screening of small molecules for which binding to the dysfunctional protein restores its wild type thermodynamics. In this review we emphasize on the effects of mutations on two important biophysical characteristics, stability and binding affinity and how structures can be used for structure-based drug design to mitigate the effects of disease-causing variants on the above biophysical characteristics.
Catabolism of Fibromodulin in Developmental Rudiment and Pathologic Articular Cartilage Demonstrate Novel Roles for MMP-13 and ADAMTS-4 in C-Terminal Processing of SLRPs
Authors: Shu Cindy , Flannery Carl R , Little Christopher B , Melrose James
Published: January 2019

Cartilage regeneration requires a balance of anabolic and catabolic processes. This study examined the susceptibility of fibromodulin (FMOD) and lumican (LUM) to degradation by MMP-13, ADAMTS-4 and ADAMTS-5, the three major degradative proteinases in articular cartilage in osteoarthritis (OA). Immunolocalisation of FMOD and LUM in foot sections of developmental cartilages demonstrated prominent localisations in metatarsal and phalangeal foetal rudiment cartilages and growth plate. An MMP-13 neoepitope antibody (TsYG11) demonstrated localisation of MMP-13 cleaved FMOD in the hypertrophic chondrocytes of the metatarsal growth plate. FMOD was more prominently localised in the superficial cartilage of normal and fibrillated zones in OA cartilage, TsYG11 positive FMOD was located deeper in the cartilage samples. Ab TsYG11 also identified FMOD fragmentation in Western blots of extracts of normal and fibrillated cartilage and total knee replacement OA cartilage.  The C-terminal anti-FMOD used in this study (PR-184) failed to identify FMOD fragmentation due to C terminal processing, an equivalent Ab to the C-terminus of LUM (pAb PR-353) identified 3 prominent LUM fragments in OA human knee cartilages. In-vitro digestion of human knee cartilage with MMP-13, ADAMTS-4 and ADAMTS-5 generated equivalently sized FMOD fragments of 54, 45 and 32kDa to those in blots of OA cartilage, LUM was not less susceptible to fragmention in in-vitro digestions however Ab PR-353 detected N-terminally processed LUM fragments of 39, 38 and 22 kDa in 65-80 year old OA knee cartilage. FMOD and LUM were differentially processed during in-vitro digestions with MMP-13, ADAMTS-4 and ADAMTS-5 with FMOD susceptible to degradation by MMP-13, ADAMTS-4 and to a lesser extent ADAMTS-5 however LUM was less susceptible to fragmentation. FMOD was processed by MMP-13 in metatarsal and phalangeal foetal rudiment developmental cartilages and growth plate indicating a role in skeletogenesis.
Fundamentals of Logic, Reasoning, and Argumentation:  An Evidence-Supported Curriculum Targeting Scientific Literacy to Increase Public Understanding and Engagement in Science
Authors: Carroll La Shun L.
Published: January 2019

The American Academy of Arts and Sciences suggested the definition of science literacy emphasize how crucial understanding the scientific process and the ability to evaluate conflicting scientific evidence is.  The purpose of this article is to present an evidence-supported curriculum covering the fundamentals of logic, reasoning, and argumentation skills to address the emphasized basic knowledge, skills, and abilities required to be scientifically literate, which will prepare the public to understand and engage with science meaningfully.  An analytic-synthetic approach toward understanding the notion of public is taken using a theoretical biomimetics framework that identifies naturally occurring objects or phenomena that descriptively captures the essence of a construct to facilitate creative problem-solving.  In the present case, the problem being solved is how to reconcile what is meant by public, how it ought to be interpreted, the different levels of confidence in science that exist, and various understandings of science all with one another.  The results demonstrate there is an inherent denotative-connotative inconsistency in the traditional notion of public that can be explicated through the concept of a fractal allowing for comprehension of the relationship between public confidence in, and understanding of, science.
Depression, Acculturative Stress and Social Connectedness among International University Students in Japan: prevalence and correlation.
Authors: NGUYEN Minh Hoang , LE Tam Tri , MEIRMANOV Serik
Published: January 2019

(1) This study aimed to examine the prevalence of depression and its correlation with acculturative Stress and Social Connectedness among domestic and overseas students in Japan International University.
(2) Methods:
A Web-based survey was distributed among students of International University, which resulted in 263 responses. On the survey together with socio-demographic data, a nine-item tool from the Patient Health Questionnaire (PHQ-9), was used to measure the prevalence of Depression and its relationship with socio-demographic data, Social Connectedness Scale was used to measure Social Connectedness, and Acculturative Stress Scale for International Students (ASSIS) was used to measured acculturative stress.
(3) Results:
Depression was significantly high in international and domestic students (37.81% and 29.85% respectively). English language proficiency and students age (20 years old) showed a significant correlation with depression among domestic students (β=-1.63, p=0.038 and β=2.24, p=0.048). Stay length (third year) also displayed a significant correlation with depression among international students (β=1.08, p=0.032).
Among international and domestic students statistically significant positive correlation between depression and acculturative stress, negative associations of social connectedness with depression and acculturative stress were also found.
Suicidal or self-hurting ideation thoughts are found among around 20% of all students.
(4) Conclusions:
These findings indicate a relatively high prevalence of depression among students of International University, and overseas students are more affected. Depression, Acculturation stress and Social Connectedness show statistically strong intercorrelation, which highlights the need of host University to recognise the role of Acculturation and Social Connectedness in the development of Depression among students.
Evolution of Correlations of Many-Particle Quantum Systems in Condensed States
Authors: Gerasimenko Viktor
Published: January 2019

We review some new approaches to the description of the evolution of states of many-particle quantum systems by means of the correlation operators. Using the denition of marginal correlation operators within the framework of dynamics of correlations governed by the von Neumann hierarchy, we establish that a sequence of such operators is governed by the nonlinear quantum BBGKY hierarchy. The constructed nonperturbative solution of the Cauchy problem to this hierarchy of nonlinear evolution equations describes the processes of the creation and the propagation of correlations in many-particle quantum systems. Moreover, we consider the problem of the rigorous description of collective behavior of many-particle quantum systems by means of a one-particle (marginal) correlation operator that is a solution of the generalized quantum kinetic equation with initial correlations, in particular, correlations characterizing the condensed states of systems.
Bottom-Up Self-Assembled Supramolecular Structures Built by STM at Solid/Liquid Interface
Authors: Ferreira Quirina , Delfino Catarina , Morgado Jorge , Alcácer Luís
Published: January 2019

The development of organic devices has been focused in their miniaturization in order to obtain denser and faster electronic circuits. The challenge is to build the devices adding atom by atom or molecule by molecule until the desired structure is achieved. To do this job, techniques able to see and manipulate matter at this scale are needed. Scanning tunneling microscopy has been the selected technique by scientists to develop smart and functional unimolecular devices. This review article compiles the latest developments in this field giving examples of supramolecular systems monitored and fabricated at molecular scale by bottom-up approaches using STM at solid/liquid interface.
Improving the Supercritical CO2 Foaming of Polypropylene by the Addition of Fluoroelastomer as a Nucleation Agent
Authors: Yang Chenguang , Zhao Quan , Xing Zhe , Zhang Wenli , Zhang Maojiang , Tan Hairong , Wang Jixiang , Wu Guozhong
Published: January 2019

Polypropylene (PP) foam has a great deal of application since it normally exhibits non-uniform cell size distribution, low cell density, and cracked cells. In this study, a small amount of fluoroelastomer (FKM) was used as a nucleating agent to prepare well-defined microporous PP foam by supercritical CO2. It was observed that solid FKM was present as the nanoscale independent phase in PP matrix and the FKM could induce a mass of CO2 aggregation, which significantly enhanced the diffusion rate of CO2 in PP. The resultant PP/FKM foams exhibited much smaller cell size (～24 μm), and more than 16 times cell density (3.2×108 cells/cm3) as well as a much more uniform cell size distribution than that of the neat PP foam. PP/FKM foams possessed major concurrent enhancement in their tensile stress and compressive stress compared to neat PP foam. We believed that the added FKM played a key role in enhancing the heterogeneous nucleation, combined with the local strain field variation in the multiple-phase system, which was responsible for the considerably improved cell morphology of PP foaming. This paper provides a deep understanding of the scCO2 foaming behavior of PP in the presence of FKM.
A Systematic Review of Challenges in Research Supervision at South African Universities
Authors: Costa King
Published: January 2019

Postgraduate students in South Africa and other parts of the world, particularly in developing nations struggle to complete the research component of their studies. According to the National Development Plan ( 2013) it has become a requirement for South African institutions to play a pivotal role in knowledge production so as to transform South Africa from a resource-based economy towards a knowledge-based economy.  In pursuit of meeting this requirement and further to increase subsidy from the Department of Higher Education and Training (DHET), South African institutions of higher learning have been on the drive for recruiting postgraduate students en masse. One of the main problems facing South African institutions is that the number of students enrolled does not correspond to those who graduate at the end of the postgraduate programme study period.  This study is a systematic review of literature on challenges in postgraduate supervision and further proposes a possible solution.  Five South African institutions of higher learning’s postgraduate throughput data is carefully studied and substantiated by previous research on postgraduate supervision challenges on these particular institutions. Study findings present challenges related to research capacity development and burden of supervision at these institutions.  Collaborative methods of supervision such as the C.O.S.T.A model are hereby proposed as possible solutions to the current throughput problem in South Africa.
Wearables as Digital Evidence
Authors: Khairallah Tariq
Published: January 2019

Digital Evidence is considered as an important type of evidence in many legal cases. Many legislations have dedicated laws to the collection, handling and admissibility of digital evidence. New technologies and new devices are rapidly being developed, which creates new sources of digital evidence. This presents a challenge to law enforcement agencies and digital investigators to stay up to date with the rapid development in the digital field. This paper discusses a relatively new source of digital evidence which is the evidence extracted from Wearable devices. A Fitbit fitness tracker is one of the most common wearable devices used by many people today. This paper presents a case study whereby data extracted from a Fitbit was used as a digital evidence. The admissibility and the challenges of using Wearables as digital evidence is also discussed.
Giant Gastrointestinal Stromal Tumor of the Stomach
Authors: Çakır Tuğrul , Aslaner Arif , Eyvaz Kemal , Kazan Murat Kazım
Published: January 2019

Gastrointestinal stromal tumors are the mostly seen mesenchymal tumors of the gastrointestinal system and mostly seen at the stomach. We report a case of giant gastrointestinal stromal tumor of the stomach in a 71-year-old woman. The physical examination and radiological findings revealed that a giant mass occupied most of the abdominal cavity. The patient underwent an en-block resection of this giant mass with partial resection of the distal stomach and transverse colon and, reconstruction with gastro-jejunostomy and end-to end colo-colic anatomoses. The histopathologic diagnosis was revealed as gastrointestinal stromal tumor of the stomach. We suggest that complete surgical resection is the only effective radical treatment approach for giant gastrointestinal stromal tumors of the stomach.
Subjective Assessment of Sleep in Infantile Autism, Comparative Study
Authors: Alfonso-Alfonso Maydelin , Morales Chacon Lilia , Gonzalez-Naranjo Justa Elizabeth , Valiente Linares Ana Margarita
Published: January 2019

Sleep disturbances very common in children with autism. That is why it requires instruments that facilitate its evaluation. Goals: Perform the evaluation of sleep from a subjective prospect in a group of children with primary autism and compare to a control group, using the Sleep Habits in Children Survey (CSHQ), In order to determine sleep disturbances, according to the sub-scales results. Method: A prospective cross-sectional study of the sample was carried out. A group with primary Autism n = 21 was selected. For the assessment of the dream we chose (CSHQ). The differences between independent groups were calculated by applying a Mann Whitney U test (p <0.05). Results: The group of children with autism showed the highest values of the total scale (mean = 48.00) wish is congruent with a greate disfuntion of sleep, compared to the control group (mean = 36.47) for p = 0.00. Significant differences were found for all sub scales p = 0.00, with the exception of sub-scale number 7. Conclusions: There is a high presence of sleep disturbances in children with primary autism, which are related to multifactorial causes, with the exception of sleep breathing disorders that did not show statistically significant differences between groups.
Land Use Land Cover Changes and Their Impact on the Lake Ecosystem of the Central Rift Valley of Ethiopia
Authors: Elias Eyasu , Gessesew Weldemariam Seifu , Tesfaye Bereket , Girmay Wondewosen
Published: January 2019

LULC changes are major environmental challenges in many parts of the world which are adversely affecting ecosystem services. This study was aimed to analyze LULC changes in the ecological landscape of Ethiopia CRV areas from 1985 to 2015. Satellite images were accessed and pre-processing and classification is done. Major LULC types were detected and change analysis was executed. Nine LULC changes were successfully evaluated. The classification result revealed that in 1985, 44.34% of the land was covered with small scale farming followed by mixed cultivated/acacia (21.89%), open woodland (11.96%), and water bodies (9.77%). Whereas for the same study year open grazing land, forest, degraded savannah and settlements accounted the smallest proportion. Though the area varied among land use classes, the trend of share occupied by the LULC types in the study area remained the same in 1995 and 2015. Increase in small and large scale farming, settlements and mixed cultivation/acacia while a decrease in water bodies, forest, and open woodlands is noted. About 86.11% of the land showed major changes in land use/cover. Lastly, DPSIR framework analysis was done and integrated land use and development planning and policy reform are suggested for sustainable land use planning and management.
Effect of Plasma Nitriding on Fatigue Behavior of Ti-6Al-4V Alloy
Authors: de Castro Michele C. B. , Couto Antônio A. , Almeida Gisele F. C. , Massi Marcos , de Lima Nelson B. , da Silva Sobrinho Argemiro S. , Castagnet Mariano , Xavier Gleicy L. , Oliveira Rene R.
Published: January 2019

The Ti-6Al-4V alloy is widely used in the manufacture of components that should have low density, high corrosion resistance, and fatigue strength. The fatigue strength can be improved by surface modification. The aim of this study was to determine the influence of plasma nitriding on the fatigue behavior of Ti-6Al-4V alloy with a lamellar microstructure (Widmanstätten type). Nitriding was executed at 720 °C for 4 hours in an atmosphere with N2, Ar and H2. Samples microstructure characterization was carried out by X-ray diffraction analysis, optical microscopy and scanning electron microscopy. The average roughness of the specimens was determined, and fatigue tests were executed in a bending-rotating machine with reverse tension cycles (R= -1). X-ray diffraction analysis revealed the matrix phases α and β, and the phases Ɛ-Ti2N and δ-TiN in the nitrided alloy. A nitrogen diffusion layer was formed between the substrate and the titanium nitrides. Plasma nitriding resulted in an increase in low cycle fatigue strength, whereas at high cycles, both conditions exhibit similar behavior. The fracture surface of the fatigue tested specimens clearly revealed the lamellar microstructure. The fracture mechanism appears to be due to cracking at the interface of α and β phases of the lamellar microstructure.
Quality of Life: The Contribution of a Football Viewing Center to Noise Pollution in an Urban City
Authors: Abulude Francis Olawale , Fagbayide Samuel Dare , Akinnusotu Akinyinka
Published: January 2019

Noise pollution is an environmental problem due to its effect on hearing and other related health issues. The elevated noise levels above standard limits cause hearing loss and other attendant problems. In Nigeria, viewing centers where football matches are watched via satellite are known as ‘Mini Stadium’.  In this study, the noise pollution of a viewing center was assessed. To do this, five top teams each from the English Premier League (EPL), La Liga, Bundesliga, League 1, and Serie A were selected for the assessment. A sound level meter (GB: 2266204, made in China) was used for the monitoring. The range of noise levels in dBA showed as follow: EPL (56-108); La Liga (46-106); Bundesliga (54-102); Serie A (49-101); and Ligue 1 (54-101). The results when compared with the standard limits, it was observed that part of the results exceeded the limits, this means that the viewers and others within the viewing center may be prone to the hearing problem. It is recommended that acoustic insulators and hearing aids should be used to reduce the attendant problems associated with noise.
Exposure to Herbicides Primes P450-Mediated Detoxification of Helicoverpa armigera against Insecticide and Fungal Toxin
Authors: Sun Zhongxiang , Xu Cuicui , Chen Shi , Shi Qi , Wang Huanhuan , Wang Rumeng , Song Yuanyuan , Zeng Rensen
Published: January 2019

With the long-term and large-scale use, herbicides have been well known to influence tritrophic interactions particularly natural enemies of pests in agro-ecosystems. On the other hand, herbivorous insects, especially the generalist pests, have developed antagonistic interaction to different insecticides, toxic plant secondary metabolites and even heavy metals. However, whether exposure to herbicides would affect resistance of insects against insecticides is largely unknown, especially in agricultural pests. Here, we first reported that pre-exposure to two widely used herbicides butachlor and haloxyfop-methyl for 48 h can prime resistance of a generalist agricultural pest Helicoverpa armigera Hübner against insecticide methomyl and fungal toxin aflatoxin B1. In addition, there were no significant differences between control and herbicides-treated caterpillars on weight gain, pupal weight and pupation rates, suggesting that exposure to herbicides induce resistance of H. armigera accompanied with no fitness cost. Moreover, by determining detoxifying enzyme activities and toxicity bioassay with additional inhibitor of cytochrome P450 piperonyl butoxide (PBO), we showed that exposure to herbicides might prime P450-mediated detoxification of H. armigera against insecticide. Based on these results, we propose that exposure to herbicides primes resistance of H. armigera against insecticide by eliciting a clear elevation of predominantly P450 monooxygenase activities in midgut and fat body.
DIFRAKSI DAN EFEK SMILING PADA DATA SEISMIK
Authors: Gedo Sea Johannes , Massinai Muh. Altin , Aswad Sabrianto , Djajadihardja Yusuf Surachman
Published: January 2019

AbstrakDifraksi dan efek smiling merupakan artefak yang sering terdapat pada data seismik. Difraksi timbul pada data sebelum dilakukan proses migrasi sedangkan efek smiling timbul setelah dilakukan proses migrasi. Dalam penelitian ini akan dibahas efek smiling pada penampang hasil migrasi yang pada wilayah tersebut merupakan tempat terjadinya difraksi sebelumnya. Kata Kunci: Difraksi, Efek Smiling, MigrasiAbstractDiffraction and smiling are the two effects that often present in a seismic data. Diffraction occurs before the migration process, while the smiling occurs after the migration process. This research will discuss the effect of smiling on a cross section of the result of migration, which is the diffraction happened in an area of investigationKeywords: Diffraction, Smiling Effect, Migration
IDENTIFIKASI POLA SEBARAN INTRUSI BATUAN BAWAH PERMUKAAN MENGGUNAKAN METODE GEOMAGNET DI SUNGAI JENELATA KABUPATEN GOWA
Authors: Nurdin Nur Hidayat , Massinai Muh. Altin , Aswad Sabrianto
Published: January 2019

AbstrakPenelitian ini dilakukan di Sungai Jenelata, Kabupaten Gowa, Sulawesi Selatan mengunakan metode geomagnet . Tujuan dari penelitian ini yaitu mengidentifikasi struktur geologi bawah permukaan pada daerah penelitian. Jumlah titik pengukuran sebanyak 248 dengan area seluas 70 × 300 meter. Akuisisi data dilakukan dengan menggunakan satu alat magnetometer. Sementara pengolahan data menggunakan koreksi harian dan koreksi IGRF serta filter upward continuation. Pemodelan dilakukan dengan metode forward modeling dengan menggunakan perangkat lunak Mag2DC. Medan magnetik total berkisar antara 42.456 sampai 43.111,6 nT. Berdasarkan interpretasi kualitatif pada kontur anomali magnetik lokal didapatkan variasi nilai anomali antara -320 sampai 240 nT. Sedangkan interpretasi kuantitatif menunjukkan adanya batuan basalt dengan nilai suseptibilitas sampai SI, yang menerobos batuan pyroclastic dengan nilai suseptibilitas hingga SI dalam dalam bentuk dyke. Kata Kunci: Geomagnet, dyke, Suseptibilitas, Sungai Jenelata.AbstractThis research has been conducted using geomagnetic method at Jenelata River, Gowa regency, South Sulawesi. The purpose of this study is to identify subsurface geological structure of the study area. The number of measurement points as much as 248 points with area 70 × 300 meters. The process of data acquisition using a magnetometer. Data processing was carried out with the diurnal correction and IGRF correction and using filter upward continuation. Modelling conducted using forward modeling using the software Mag2DC. The total magnetic field ranges from 42,456 to 43,111.6 nT. Based on a qualitative interpretation obtain local magnetic anomaly contour variations values between -320 to 240 nT. While the quantitative interpretation indicates basalt rocks with susceptibility values  to SI, which breached pyroclastic rocks with susceptibility values to SI, in the form of dyke. Keywords: Geomagnetic, dyke, Susceptibility, Jenelata River
PERUBAHAN PENGGUNAAN LAHAN DI KECAMATAN SIRIMAU KOTA AMBON
Authors: M. Laka Beatus , Sideng Uca , - Amal
Published: January 2019

Penelitian ini bertujuan untuk mengetahui luasan masing-masing perubahan penggunaan lahan Kecamatan Sirimau dilihat dari citra satelit tahun 2006-2016, mengetahui agihan perubahan penggunaan lahan Kecamatan Sirimau dilihat dari citra satelit tahun 2006-2016, dan  untuk mengetahui Faktor-faktor apa saja yang mempengaruhi terjadinya perubahan penggunaan lahan di Kecamatan Sirimau.       Penelitian dilaksanakan pada bulan Maret-April 2016 di Kecamatan Sirimau Kota Ambon. Penelitian ini adalah penelitian survey karena sebagian besar data secara langsung diolah dengan menggunakan metode pengamatan dan pengukuran lapangan. Subjek penelitian ini adalah perubahan penggunaan lahan di Kecamatan Sirimau Kota Ambon. Pengambilan data dalam penelitian ini adalah menggunakan sistem informasi geografi (SIG). Teknik analisis data yang digunakan adalah analisis menggunakan SIG dan deskriptif, data yang diperoleh dari hasil analisis SIG di sajikan dalam bentuk peta overlay yaitu peta penggunaan lahan tahun 2006-2016 Kecamatan Sirimau Kota Ambon. Peta ini kemudian ditumpang tindih, kemudian menghasilkan peta baru dan tabel perubahan penggunaan lahan kemudian dijelaskan secara deskriptif. Selanjutnya data yang diperoleh dianalisis kembali dengan menggunakan teknik analisis spasial keruangan untuk memaparkan perubahan penggunaan lahan yang terjadi di Kecamatan Sirimau dalam kurun waktu sepuluh tahun dengan menggunakan software arcgis versi 10.3. Setelah itu data yang berupa peta perubahan penggunaan lahan tahun 2006 dan 2016 dianalisis untuk mengetahui berapa besar agihan perubahannya.        Berdasarkan hasil penelitian dapat ditarik kesimpulan bahwa perubahan luasan penggunaan lahan Kecamatan Sirimau Kota Ambon 10 tahun terakhir sangat besar untuk permukiman sebesar 1036,1 Ha dari tahun sebelumnya sebesar 966,9 Ha. Agihan perubahan penggunaan lahan Kecamatan Sirimau Kota Ambon 10 tahun terakhir mengarah ke selatan dan timur yaitu ke daerah pesisir pantai dan pegunungan, adapun perubahan penggunaan lahan kea rah timur di dominasi oleh perubahan dari lahan hutan dan lahan pertanian kering berubah ke lahan permukiman. Faktor-faktor yang mempengaruhi perubahan penggunaan lahan adalah tingginya tingkat laju pertumbuhan penduduk Kecamatan Sirimau yaitu sebesar 5,54% dengan kepadatan penduduk kurang lebih 1.925 orang/Km2.
IDENTIFIKASI KANDUNGAN UNSUR LOGAM BATUAN MENGGUNAKAN METODE XRF (X-RAY FLOURESCENCE) (STUDI KASUS: KABUPATEN BUTON)
Authors: . Jamaluddin , Umar Emi Prasetyawati
Published: January 2019

Tujuan dari penelitian ini adalah untuk menentukan konsentrasi unsur logam besi (Fe), Mangan Mn), and nikel (Ni). Metode yang digunakan dalam penelitian ini yaitu dengan metode X-Ray (Fluoresence (XRF). Hasil penelitian menunjukkan bahwa konsentrasi rata-rata unsur logam besi (Fe) pada sampel Buton 1, Buton 2, Buton 3 dan Buton 4 berturut-turut adalah 48.17 %, 49.49 %, 56.64 % dan 41.63 %. Mangan (Mn) 1.78 %, 1.81 %, 0.985 % dan 1.69 %. Nikel (Ni) 3.34 % , 3.18 %, 9.22 % dan 3.88 % . Dari  hasil  karakterisasi X-Ray Fluorenscence (XRF)  didapatkan besi (Fe) dominan  terkandung  dalam  sampel dengan  konsentrasi  sekitar  41.63%  sampai 56.64%. Bijih besi mengandung material magnetik berbasis besi (Fe) dalam bentuk mineral oksida besi yaitu Hematit (Fe2O3).
INVESTIGASI ZONA AKUIFER MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DI PANTAI PARANGLUHU KECAMATAN BONTOBAHARI, KABUPATEN BULUKUMBA
Authors: Wahyuni Wahyuni , . Jamaluddin , Aswad Sabrianto , Armin La Ode
Published: January 2019

Water is a natural resource that is essential for needs of living things, especially human beings. Most groundwater widely utilized because the standards compliance of clean water and proper use. However there is a difference in the conditions and quality of the groundwater in different areas, one of which on the territory of coastal zone that can store brackish ground water – salty. This is a lot going on in various parts of the territory of one of the coastal zone subdistrict of Bontobahari. Related conditions, this research was conducted with the aim to find out the characteristics of the aquifer and the salty soil water distribution in the region of coastal zone subdistrict of Bontobahari, Bulukumba. The methods used in this research is the geoelectric resistivity injection using the Schlumberger configuration. Based on the measurement and data processing, resisvity values of aquifer have about 29,4 – 36,1 Ωm and it can be found at a depth of 6,50 – 19,7 m.
The Effect of Method and Ripening Duration on the Content of β-Carotene of Fe’i Banana (Musa troglodytarum L.)
Authors: Leiwakabessy Fredy
Published: January 2019

Research was conducted to determine the effect of the method and duration of ripening on the content of β-carotene of Fe’i banana, as well as determine the method and duration of ripening is effective in maintaining the nutritional value of Fe’i Banana. Through laboratory experimental with randomized complete design consisting of 19 groups of treatments and three repetitions, the data obtained were analyzed using statistical tests ANOVA and continued with Duncan test. Results of the analysis showed that method ofripening statistically significant difference (p <0,05) on the content of β-carotene in the banana sticks sky. Long ripening length statistically significant difference (p <0, 05) on the content of β-carotene in the Fe’i Banana. Grilled ripening method is more effective against β-carotene content in the Fe’i Banana and takes1 0 minutes of ripening length more effectively on the content of β-carotene on a Fe’i Banana.
Genetic Diversity Analysis Using Resistance Gene Analog-Based Markers to Support Morphological Characterization of Shallots
Authors: Herlina Lina , Reflinur Reflinur , Nugroho Kristianto , Terryana Rerenstradika T. , Sobir Sobir , Maharijaya Awang , Wiyono Suryo
Published: January 2019

Shallot (Allium cepa var. aggregatum) is one of the most important vegetable crops grown in Indonesia. The limited knowledge available on the genetic diversity and the threat of plant disease have been major problems to maintain high shallot production in Indonesia. Development of molecular markers linked to disease resistance is required for molecular breeding activity in this crop. This study aimed to assess the genetic diversity at conserved domain of resistance gene analog (RGA) in a set of 36 Indonesian shallot genotypes to complement morphological characterization. Twelve morphological and fifteen molecular markers traits were investigated in an attempt to characterize and to discriminate the Indonesian shallots genotypes. Characterization at orphological level indicated that phenotypic variance was highest for total bulb weight (TWB, cv = 99.39%) and the least for the plant height (PH, cv = 28.16%). The correlation analysis between traits showed that TWB and number of bulb (NB), TWB and bulb weight per plant (WB), NB and WB, and WB and PH were positively correlated. Molecular analysis revealed a total of 1,512 alleles with an average of 1.946 alleles per locus. The Polymorphism Information Content (PIC) values ranged from 0.253 to 0.676 and six out of 15 RGA markers were highly informative with PIC values ≥0.50. Based on cluster analysis, the 36 Indonesian shallot genotypes were clearly discriminated into six major groups. These results revealed that the RGA-based markers could support the morphological characterization in evaluating the genetic diversity of shallots. 
De servidores públicos marajás a profissionais eficientes: uma genealogia das práticas de poder e resistência a partir de um grupo de discussão
Authors: Bretas Paula Fernandes Furbino
Published: January 2019

Objetivou-se neste artigo compreender como um grupo de discussão online foi produzido e transformado em práticas de poder e resistência em uma organização pública. Buscou-se desenvolver reflexões sobre as relações de poder e seus efeitos a partir do poder disciplinar, observando os regimes de verdade do Neoliberalismo e da Nova Gestão Pública como condições de emergência do grupo. Metodologicamente, seguiu-se as diretrizes da genealogia para fazer um estudo de caso qualitativo em uma perspectiva histórica. Alguns achados de pesquisa incluem os processos de subjetivação de trabalhadores despolitizados e a possibilidade de resistências multiformes que se transformam constantemente no jogo de poder.
A Compositional Rescaled Exponential Model for Multiphase-Production-Performance Analysis of Boundary-Dominated Gas/Condensate Reservoirs
Authors: Will Ryan , Sun Qian , Ayala Luis F.
Published: January 2019

Hydrocarbon-reservoir-performance forecasting is an integral component of the resource-development chain and is typically accomplished using reservoir modeling, by means of either numerical or analytical methods. Although complex numerical models provide rigorous means of capturing and predicting reservoir behavior, reservoir engineers also rely on simpler analytical models to analyze well performance and estimate reserves when uncertainties exist. Arps (1945) empirically demonstrated that certain reservoirs might decline according to simple, exponential, hyperbolic, or harmonic relationships; such behavior, however, does not extend to more-complex scenarios, such as multiphase-reservoir depletion. Because of this limitation, an important research area for many years has been to transform the equations governing flow through porous media in such a way as to express complex reservoir performance in terms of closed analytical forms. In this work, we demonstrate that rigorous compositional analysis can be coupled with analytical well-performance estimations for reservoirs with complex fluid systems, and that the molar decline of individual hydrocarbon-fluid fractions can be expressed in terms of rescaled exponential equations for well-performance analysis. This work demonstrates that, by the introduction of a new partial-pseudopressure variable, it is possible to predict the decline behavior of individual fluid constituents of a variety of gas/condensate-reservoir systems characterized by widely varying richness and complex multiphase-flow scenarios. A new four-region-flow model is proposed and validated to implement gas/condensate-deliverability calculations at late times during variable-bottomhole-pressure (BHP) production. Five case studies are presented to support each of the model capabilities stated previously and to validate the use of liquid-analog rescaled exponentials for the prediction of production-decline behavior for each of the hydrocarbon species.
Measuring Simplified Pore-Throat Angularity Using Automated Mathematical Morphology
Authors: Meyer Aurelien G.
Published: January 2019

Fluid flow in sedimentary rocks is controlled mainly by the morphology of pore-connecting throats. Pore throats (PTs) typically exhibit diverse converging/diverging morphologies such as biconic, parabolic, or hyperbolic geometries. These different geometries are defined by variable opening angle, or angularity, between the throat walls from the narrowest point of the throat toward the pore body. Importantly, each of these geometries imposes different constraints on fluid flow. However, current pore-level flow models usually favor simple cylindrical or biconic throat morphologies, in part because of the difficulty to extract the throat angularity from pore-space imagery. An image-analysis technique called mathematical morphology has been used to characterize porosity in laterally continuous pore networks (e.g., in sandstones) from thin-section microphotographs. This method allows the extraction of petrophysical parameters such as pore and throat diameters through successive image alterations—namely, erosion/dilation cycles using an expanding structuring element (SE). This study proposes a novel application of this technique and quantifies PT angularity. Angularity can be measured from the throat toward the pore body so that the true geometry—biconic, parabolic, or hyperbolic—can be recognized. The technique is tested on simple geometries to demonstrate the correctness of the mathematic equations involved. Because all equations assume perfect, nonpixelated geometries while images are composed of square pixels, the accuracy of measurements depends strongly on image resolution. Pixelation causes significant fluctuations of ±2 to 10° around the correct angularity values that decrease in amplitude as image resolution increases. Finally, potential implications of this parameter on fluid-flow modeling are discussed.
Usefulness of Airway Scope for Intubation of Infants with Cleft Lip and Palate–Comparison with Macintosh Laryngoscope: A randomized controlled trial
Authors: Okumura Yoko , Okuda Masahiro , (Boku) Aiji Sato , Tachi Naoko , Hashimoto Mayumi , Yamada Tomio , Yamada Masahiro
Published: January 2019

Background: Airway Scope (AWS) with its plastic blade does not require a head-tilt or separate laryngoscopy to guide intubations. Therefore, we hypothesized that its use would reduce the intubation time (IT) and the frequency of airway complication events when compared with the use of Macintosh Laryngoscope (ML) for infants with cleft lip and palate (CLP).
Methods: The parents of all patients provided written consents; we enrolled 40 infants with CLP (ASA-PS 1). After inducing general anesthesia using sevoflurane and rocuronium, we performed orotracheal intubations using either AWS (n = 20) or ML (n = 20), randomly. We define the duration between manual manipulation using cross finger for maximum mouth opening and the first raising motion of the chest following intubation by artificial ventilation as “IT;” further, the measured IT as primary outcomes. Airway complications were considered secondary outcomes. Moreover, we looked for associations between IT and the patient’s characteristics: extensive clefts, age, height, and weight. We used the Mann–Whitney test and Fisher’s exact probability test for statistical analysis; p < 0.05 was considered as statistically significant.
Results: The mean IT was 31.5 ± 8.3 s in AWS group and 26.4 ± 8.9 seconds in ML group. Statistical significant difference was not found in IT between the two groups. The IT of AWS group was statistically related to extensive clefts. Airway complications were detected in ML group.
Conclusion: AWS is useful for intubation of infants with CLP; it required IT similar to that required using ML, with a lower rate of airway complications.
Trial Registration
UMIN-CTR Registration number UMIN000024763
Registered 8 November 2016
Keywords: Airway Scope, Macintosh Laryngoscope, infant, intubation time