bluuebunny/crossref_metadata_2025 huggingface dataset:
A simplified PWM technique for PV fed Five-Level Five switch Multilevel Inverter
Authors: Algburi Ali Qasim Hussein , Rao P. V. Ramana
Published: April 2019

Bulk electrical power generation is generated using fossil fuels which emit huge pollution which is a global constraint today. Non-conventional sources of energy are the alternative energy sources for power generation. Non-conventional sources like PV (photo-voltaic) system are used as power source now-a-days. Multi-level inverters (MLI) are dominating inverter circuits giving out voltage with less distortion eventually reducing voltage stress on switches and size of filter. This paper presents a MLI structure with five switches giving out five-level output from the inverter. PV system is used as source and boost converter amplifies the PV output voltage to desired value. The paper presents a simplified PWM (pulse width modulation) technique for PV fed five switch five-level inverter. The proposed system is developed and results are obtained using MATLAB/SIMULINK software. Results are presented for the system considering R-load and RL-load conditions.
Power Quality Enhancement by Integrating Distributed Generation in Distribution System
Authors: Samala Mr. Rajesh Kumar , Rosalina Dr. K Mercy
Published: April 2019

This research is to enhance the quality of power by reduce real power loss in distribution system and enables voltage profile enhancement at each bus. This will achieve by integrating Distributed Generation (DG) in optimal place with suitable size. In order to overcome the disadvantage of sluggish convergence of conventional algorithms the BAT Algorithm (BA) is used. In this paper the week buses are finding by using Backward/Forward (BW/FW) sweep approach based on real power loss. Later by using BA approach determination of optimal capacity and location will be done. This optimal size and location will leads to great minimization in real power loss and improvement of voltage at each bus. In this research the wind energy and Photo Voltaic (PV) energies are consider as DGs. This research is to determine the advantage of the proposed analysis on IEEE-69 radial bus using MATLAB software. The results were evaluated with the GSA approach existing in literature. Finally simulation outcomes prove that the proposed approach performance is superior in enhancing the power quality by optimal placement of DG and capacity of the DG.
Justification of Statutory Service Life Extension of Locomotives on the Basis of Theory of Aging
Authors: Krashenin Oleksandr , Klymenko Oleksandr , Ponomarenko Olena , Yakovlev Serhii
Published: April 2019

The article is devoted to statutory service life extension of locomotives on the basis of mathematical methods and provisions of the following theories: reliability, games, probability, aging, pattern recognition, and others. Methods of reliability theory have been used to simulate a system of repairs and critical assessment of options for organization of maintenance and repair in excess of statutory service life of locomotives. Methods of game theory are used to determine the tactics of locomotive maintenance over normative term of use. Methods of probability theory and mathematical statistics are used for collecting and processing initial data, the laws of distribution of random variables of working properties and loads are determined in the calculation of the reliability of bearing structures of locomotives, as well as the effectiveness of replacing the old rolling stock with a new one. Methods based on the theory of aging to determine values of criteria for estimating boundary terms for various variants of the strategy of prolonging the operation of locomotives in excess of the normative term. Methods of pattern recognition theory are used to adjust the system of obtaining locomotives in excess of the normative lifetime.
Granger Causality Analysis on PLUS Highway Traffic Network
Authors: Asrah Norhaidah Mohd , Djauhari Maman Abdurachman , Khamis Azme , Salleh Rohayu Mohd , Avtar Sya Sya Syahira Muhammad Fitri Avtar
Published: April 2019

PLUS Malaysia Berhad (PMB) is the largest toll expressway operator in Malaysia and South East Asia. Based on this reputation, PLUS handled thousands of vehicles every day.  It covers the in-coming and out-coming traffic burdens from the northern areas to the southern areas. In order to manage these traffic burdens, toll plazas are located along this highway. Previous studies revealed that some of these toll plazas are important in managing the traffic burdens. This study analyze the importance of Skudai (SKD) toll plaza in Johor from 2009 until 2013. The causal relationship between SKD toll plaza with other toll plazas in Johor is studied to determine if there is any potential correlation or relationship of SKD with other toll plazas by using the Granger causality analysis. The findings show that there is a bidirectional Granger causality between SKD and Tangkak (TGK) as well as Machap (MAC) toll plazas. Meanwhile, there is only a unidirectional Granger causality between SKD and Yong Peng Utara (YPU) and Yong Peng Selatan (YPS) toll plazas. These results benefit the PLUS highway management to identify which potential toll plazas that can increase the traffic burden out from SKD toll plaza.
Modelling House Price Using Ridge Regression and Lasso Regression
Authors: Xin Seng Jia , Khalid Kamil
Published: April 2019

House price prediction is important for the government, finance company, real estate sector and also the house owner.  The data of the house price at Ames, Iowa in United State which from the year 2006 to 2010 is used for multivariate analysis. However, multicollinearity is commonly occurred in the multivariate analysis and gives a serious effect to the model. Therefore, in this study investigates the performance of the Ridge regression model and Lasso regression model as both regressions can deal with multicollinearity. Ridge regression model and Lasso regression model are constructed and compared. The root mean square error (RMSE) and adjusted R-squared are used to evaluate the performance of the models. This comparative study found that the Lasso regression model is performing better compared to the Ridge regression model. Based on this analysis, the selected variables includes the aspect of  house size, age of house, condition of house and also the location of the house.
Caputo-Fabrizio Time Fractional Derivative Applied to Visco Elastic MHD Fluid Flow in the Porous Medium
Authors: Uddin Salah , Mohamad M. , A. H. Mohamad M. , Sufahani Suliadi , Ghazali Kamardan M. , Ullah Mehmood Obaid , Wahid Fazli , Roslan R.
Published: April 2019

In this paper the laminar fluid flow in the axially symmetric porous cylindrical channel subjected to the magnetic field was studied. Fluidmodel was non-Newtonian and visco elastic. The effects of magnetic field and pressure gradient on the fluid velocity were studied by using a new trend of fractional derivative without singular kernel. The governing equations consisted of fractional partial differential equations based on the Caputo-Fabrizio new time-fractional derivatives NFDt. Velocity profiles for various fractional parameter a, Hartmann number, permeability parameter and elasticity were reported. The fluid velocity inside the cylindrical artery decreased with respect to Hartmann number, permeability parameter and elasticity. The results obtained from the fractional derivative model are significantly different from those of the ordinary model.
Numerical Study on the Effects of using Nanofluids in Pulsating Heat Pipe
Authors: Zufar M. , Gunnasegaran P. , Ching Ng K.
Published: April 2019

Pulsating Heat Pipe (PHP) is the next generation heat pipe that has a prospect in improving the heat transfer performance. The type of working fluid use in the PHP has a direct influence on the thermal performance. Incorporating nanofluid in PHP may greatly increase its thermal performance as compared to using base fluid (water). The current work focuses on the simulations of 2-dimensional flows in PHP using working fluids such as diamond, silver (Ag), silica oxide (SiO2) nanofluids and water. Constant heat flux and filling ratio of 50% were used throughout the study. From the results, it was found out that diamond nanofluid has the lowest thermal resistance value as compared to other working fluids. The effect of the number of PHP turns was studied and it was discovered that higher number of turns would produce lower thermal resistance value.
Low-load Efficiency Improvement of a Three-Phase Bidirectional Isolated DC-DC Converter (3P-BIDC) Via Enhanced Switching Strategy
Authors: S. Mohd Sharifuddin N. , M. L. Tana N. , Akagi H.
Published: April 2019

This paper presents the system design, operation and enhanced switching strategy of a three-phase bidirectional isolated dc-dc converter (3P-BIDC). The paper discusses the operating modes of the 3P-BIDC using phase-shift modulation (PSM), with analysis on its soft-switching characteristics. The phase-shift modulation is the simplest modulation technique that can be applied to the 3P-BIDC. However, it comes with the consequences of low efficiency performance in the low-load conditions. Therefore, this paper investigates the improvement in efficiency of the 3P-BIDC during low-load condition using an enhanced switching strategy combining burst-mode switching and phase-shift modulation. The model of a 700-V, 100-kW, 20-kHz 3P-BIDC and the enhanced switching strategy are verified via simulation using PSCAD. The simulation results shows that the combination of burst-mode and phase-shift modulation technique improves the efficiency of the 3P-BIDC at low-load conditions.
An Enhanced K-Means Clustering Algorithm for Pattern Discovery in Big Data Analysis of 3-Phase Electrical Quantities
Authors: Despa Dikpride , Forda Nama Gigih
Published: April 2019

The Unila Internet of Things Research Group (UIRG) was developed online monitoring of power distribution system based on Internet of Things (IoT) technology on Department of Electrical Engineering University of Lampung (Unila), has been running for several months, this system monitored electrical quantities of 3-phase main distribution panel of H-building. The measurement system involve multiple sensors such current sensors and voltage sensors, the measurement data stored in to database server and shown the information in a real-time through a web-based application.Main objective of this research was to capture, analyze, and identified the knowledge pattern of electrical quantities data measurements, using Cross-Industry Standard Process for Data Mining (CRISP-DM) data mining framework, for helping the stake holders to continuous improvement of the quality of electricity services, the initial research limited to total 770847 electrical quantities recorded data that save on database system, since 1 September - 31 October 2018, the dataset consist of 21 attribute electrical quantities such as; voltage, current, power factor values, energy consumption, frequency, on H building 3-Phase main panel control.Rapidminer as leading application on knowledge discovery application was used to analyze the big data, K-Mean cluster algorithm implemented to identify the data pattern, the result indicated that 3-Phase load was unbalanced, and Phase-0 was the most utilized phase, based on from total 5 cluster analysis result.
Identifying Arabica Raw Coffee Bean Varieties through Feature Extraction GLCM and Circularity
Authors: Agung Nugroho M. , Mediatrix Sebatubun Maria , . Sumiyatun
Published: April 2019

The morphology of raw coffee bean which has colour, texture, size and circularity features are used as standardization to calculate the price and the quality of the raw coffee bean. Meanwhile, coffee farmers have difficulties to distinguish the coffee varieties based on the features of raw coffee bean. Generally, the way of the distinguish the varieties of the coffee is through their own visual perception in form of the tree, leaves, and raw coffee bean. They find it difficult to distinguish the coffee varieties due to the similarity of the varieties forms and colours. This research proposes to solve the problem through the image processing method as the second opinion to help the coffee farmers in identifying the coffee varieties. The research is conducted in three steps processes: The first is pre-processing by cropping the image of raw coffee bean. The second is extracting the image feature of raw coffee bean with Gray Level Co-occurrence Matrices (GLCM) and circularity feature. The last is classifying the feature with multilayer perceptron. The results of the image processing method indicate that the accuracy is 90% with sensitivity is 90%, and 90% specific.
The Effectiveness of Islamic Work Value on Medical Career Planning Web Application for Analysis Anticipated Work-Family Conflict
Authors: Rahayuningsih Tri , Indra Zul , Febtriko Anip , Adi Putra Ardian , Nesyia Nasution Itto , Anggraini Rini , Hartati Rini
Published: April 2019

The dynamics of medical education continue to innovate and specialized, it requires the graduates to choose a career well. They should not only consideration of ability, but also could manage roles for responsibilities at work and family in future. Career planning in Bandura's Social Cognitive Theory includes personal value factors, which in this study are Islamic work values (IWV). Decisions on career choices can be strengthened by looking at the factors of anticipated work-family conflict (AWFC). Therefore, expert knowledge is used as a rule for web-based assessment and forecasting factors that could reduce conflict in the future. This study aimed to assist career development in the field of medicine in determine the priority role of work-family, by identified risk factors for possible anticipated work-family conflict based on Islamic work value, so that it could be taken decisions on career options using an expert systems. This research would be useful for psychology theoretically, as well as the used of information technology related to work-family conflict in web application. The result is SICES - AWFC software that is able to diagnose work-family conflicts (WFC) in the future and help medical students for career planning by considered Islamic work values.
Understanding the Meaning of Triangular Shape in Mosque Architecture in Indonesia
Authors: Jamaludin J. , Salura Purnama
Published: April 2019

This paper discuss the formal and symbolical meaning of triangular shape of contemporary mosque architecture in Indonesia, with case study the mosques designed by Ridwan Kamil in Jakarta and in rest area Km 88 toll road between Jakarta and Bandung. There was a question in the public whether the triangular shape was adequate to be used as a mosque building. This paper propose answers with the analitical descriptive to understand the symbolical meaning of triangle shape used Sundanese community culture, one of  Indonesian ethnics as representation. The paper used comparation and interpretation method to reveals the meaning of triangle shape in local culture and to find the connection to triangle shape in contemporary mosques architecture. The vernacular mosques in Indonesia known with their pyramid shape stacked roof with pointed roof in the peak. The pointed roof derived from the mountain that believed as the sacred place and used as symbol in the form of stacked roof of mosque. The finding of this paper is that triangular form can be accepted as mosque architectural form for the symbolical meaning derived from Sundanese culture. In the two mosques, this triangle shape enlarged and become praying room and as bridge to the God realm. The shape then achieved two purpose, as symbol of holy place and also fullfiled the function of praying room.
Free subgroups in k(x
1,...
,x

n
)(X;σ) and k(x,y)(k;σ)
Authors: Gonçalves Jairo Z.
Published: April 2019

Let k be a field, let

𝔄
1

{\mathfrak{A}_{1}}

be the k-algebra

k
⁢

[

x
1

±
1

,
…
,

x
s

±
1

]

{k[x_{1}^{\pm 1},\dots,x_{s}^{\pm 1}]}

of Laurent polynomials in

x
1

,
…
,

x
s

{x_{1},\dots,x_{s}}

, and let

𝔄
2

{\mathfrak{A}_{2}}

be the k-algebra

k
⁢

[
x
,
y
]

{k[x,y]}

of polynomials in the commutative indeterminates x and y. Let

σ
1

{\sigma_{1}}

be the monomial k-automorphism of

𝔄
1

{\mathfrak{A}_{1}}

given by

A
=

(

a

i
,
j

)

∈

G
⁢

L
s

⁢

(
ℤ
)

{A=(a_{i,j})\in GL_{s}(\mathbb{Z})}

and

σ
1

⁢

(

x
i

)

=

∏

j
=
1

s

x
j

a

i
,
j

{\sigma_{1}(x_{i})=\prod_{j=1}^{s}x_{j}^{a_{i,j}}}

,

1
≤
i
≤
s

{1\leq i\leq s}

, and let

σ
2

∈

Aut
k

⁢

(

k
⁢

[
x
,
y
]

)

{\sigma_{2}\in{\mathrm{Aut}}_{k}(k[x,y])}

. Let

D
i

{D_{i}}

,

1
≤
i
≤
2

{1\leq i\leq 2}

, be the ring of fractions of the skew polynomial ring

𝔄
i

⁢

[
X
;

σ
i

]

{\mathfrak{A}_{i}[X;\sigma_{i}]}

, and let

D
i
∙

{D_{i}^{\bullet}}

be its multiplicative group. Under a mild restriction for

D
1

{D_{1}}

, and in general for

D
2

{D_{2}}

, we show that

D
i
∙

{D_{i}^{\bullet}}

,

1
≤
i
≤
2

{1\leq i\leq 2}

, contains a free subgroup. If

i
=
1

{i=1}

and

s
=
2

{s=2}

, we show that a noncentral normal subgroup N of

D
1
∙

{D_{1}^{\bullet}}

contains a free subgroup.
On relations between weak and strong type inequalities for modified maximal operators on non-doubling metric measure spaces
Authors: Kosz Dariusz
Published: April 2019

In this article, we investigate a special class of non-doubling metric measure spaces in order to describe the possible configurations of

P

k
,
s

c

{P_{k,{\mathrm{s}}}^{{\mathrm{c}}}}

,

P

k
,
s

{P_{k,{\mathrm{s}}}}

,

P

k
,
w

c

{P_{k,{\mathrm{w}}}^{{\mathrm{c}}}}

and

P

k
,
w

{P_{k,{\mathrm{w}}}}

, the sets of all

p
∈

[
1
,
∞
]

{p\in[1,\infty]}

for which the weak and strong type

(
p
,
p
)

{(p,p)}

inequalities hold for the centered and non-centered modified Hardy–Littlewood maximal operators

M
k
c

{M^{{\mathrm{c}}}_{k}}

and

M
k

{M_{k}}

,

k
≥
1

{k\geq 1}

. For any fixed k we describe the necessary conditions that

P

k
,
s

c

{P_{k,{\mathrm{s}}}^{{\mathrm{c}}}}

,

P

k
,
s

{P_{k,{\mathrm{s}}}}

,

P

k
,
w

c

{P_{k,{\mathrm{w}}}^{{\mathrm{c}}}}

and

P

k
,
w

{P_{k,{\mathrm{w}}}}

must satisfy in general and illustrate each admissible configuration with a properly chosen non-doubling metric measure space. We also give some partial results related to an analogous problem stated for varying k.
Recent advances in the development of legumain-selective chemical probes and peptide prodrugs
Authors: Poreba Marcin
Published: April 2019

Legumain, which is also known as vacuolar processing enzyme (VPE) or asparaginyl endopeptidase (AEP), is a cysteine protease that was first discovered and characterized in the leguminous seeds of the moth bean in the early 1990s. Later, this enzyme was also detected in higher organisms, including eukaryotes. This pH-dependent protease displays the highest activity in acidic endolysosomal compartments; however, legumain also displays nuclear, cytosolic and extracellular activity when stabilized by other proteins or intramolecular complexes. Based on the results from over 25 years of research, this protease is involved in multiple cellular events, including protein degradation and antigen presentation. Moreover, when dysregulated, this protease contributes to the progression of several diseases, with cancer being the well-studied example. Research on legumain biology was undoubtedly facilitated by the use of small molecule chemical tools. Therefore, in this review, I present the historical perspectives and most current strategies for the development of small molecule substrates, inhibitors and activity-based probes for legumain. These tools are of paramount importance in elucidating the roles of legumain in multiple biological processes. Finally, as this enzyme appears to be a promising molecular target for anticancer therapies, the development of legumain-activated prodrugs is also described.
Parallelfedern als Führungsmechanik für Tastsysteme
Authors: Frühauf Joachim , Sorger Alexander
Published: April 2019

Parallelfedern eignen sich als Führungsmechanik für Tastsysteme der Oberflächen- und Profilmesstechnik. Der Aufbau realisierter Systeme (Gestell-Federn-Koppel) mit Federn aus Stahl oder Kunststoff (PET) wird beschrieben. Anschließend werden relevante Eigenschaften (z. B. Federkonstanten in z-Richtung und in den Querrichtungen y bzw. x, die Querabweichung und die Verkippung der Koppel bei Auslenkung um

Δ
z

\Delta z

und die Eigenfrequenz) theoretisch betrachtet und Messergebnisse vorgestellt. Es folgen relevante Betrachtungen für die Anwendung wie die Einstellung der Tastkraft und die Korrektur der Querabweichung, sowie als Beispiele die Messung eines Formprofils und eine Rauheitsmessung. Abschließend werden weitere Anwendungsaspekte vorgestellt.
Physiological and Behavioral Responses to Optogenetic Stimulation of PKD2L1+Type III Taste Cells
Authors: Wilson Courtney E. , Vandenbeuch Aurelie , Kinnamon Sue C.
Published: April 2019

Type III taste cells in mammalian taste buds are implicated in the detection and communication of sour and some salty stimuli, as well as carbonation and water. With this variety of proposed roles, it is unclear what information activated type III cells are communicating to the CNS. To better elucidate the role of type III cells in the taste bud, we use a type III cell-specific protein (polycystic kidney disease 2-like 1) to drive Cre-dependent expression of light-sensitive channelrhodopsin (Ai32) in mouse type III taste cells. Activation of these cells with light produces a taste nerve response in both the chorda tympani and glossopharyngeal nerves, and elicits a slight but significant aversion in two-bottle preference tests in both male and female mice. Unlike previous reports (Zocchi et al., 2017), our mice did not react to blue light stimulation with sustained drinking responses. These data suggest that type III cells are capable of communicating the presence of aversive stimuli in the oral cavity, which is in line with their responsiveness to sour and high concentrations of salt stimuli.
TAZE VE DONDURULMUŞ ELMALARDA VE ELMA POSASINDA POLİFENOL BİYOERİŞİLEBİLİRLİĞİNİN DEĞERLENDİRİLMESİ
Authors: KAMİLOGLU Senem
Published: April 2019

Elma taze tüketilebildiği gibi dondurulmuş elma gibi
çeşitli formlara işlenerek de tüketilebilmektedir. Elma işleme sonucu posa
olarak adlandırılan biyoaktif bileşenler açısından zengin bir atık ürün
oluşmaktadır. Bu çalışmada taze ve dondurulmuş elmalarda ve elma posasında
bulunan polifenollerin biyoerişilebilirliklerinin in vitro
gastrointestinal sindirim modeli kullanılarak değerlendirilmesi amaçlanmıştır.
Toplam fenolik madde, toplam flavonoid madde ve toplam antioksidan kapasiteki
değişimler spektrofotometrik yöntemlerle tespit edilmiş olup, polifenolik
bileşiklerin miktarının tespiti yüksek performanslı sıvı
kromatografisi–fotodiyot dizi dedektörü (HPLC–PDA) kullanılarak kromatografik
yöntemle yapılmıştır. İn vitro gastrointestinal sindirim simülasyonu
sonrasında HPLC–PDA ile belirlenen toplam biyoerişilebilir polifenol miktarları
göz önüne alındığında, dondurulmuş elma ve elma posasının taze elmalara kıyasla
%11–16 kadar daha fazla biyoerişilebilir polifenole sahip olduğu görülmüştür.
Sonuç olarak, bu çalışmada elde edilen bulgular gıda işlemenin sindirim
sırasında polifenollerin matriksten salınımını etkilediğini göstermiş olup,
sindirilmemiş örnekler için tespit edilen değerlerin biyoerişilebilirlik
değerlerinden farklı olabileceğine dikkat çekmiştir.
Keanekaragaman Spesies Mangrove dan Zonasi di Wilayah Kelurahan Mangunharjo Kecamatan Tugu Kota Semarang
Authors: Tefarani Rahmadyan , Tri Martuti Nana Kariada , Ngabekti Sri
Published: April 2019

Tugu sub-district has a mangrove ecosystem that is better than the other three sub-districts in Semarang City. The improvement of the mangrove ecosystem in Mangunharjo Village became the main of priority for mangrove rehabilitation This study aimed to determine the level of diversity of mangrove species found in the mangrove ecosystem of Mangunharjo Sub-District, Tugu District, Semarang City based on the zonation. The study was conducted in February-March 2018. Sampling using a combination method, that are systematic sampling with vegetation analysis techniques using quadrat sampling technique. There are three data collection stations determined based on the distance from the coastline to the mainland. Data were analyzed using quantitative descriptive statistics. The results showed that the diversity of mangrove species found in Mangunharjo Village had a low to moderate diversity level (0.72-1.32). The mangrove ecosystem in Mangunharjo is actually artificial ecosystem, with the type and number of mangroves dominated by Rhizophora mucronata and Avicennia marina. There are seven mangrove species found in the open zone, four species in the middle zone and four species in the land zone.

 

Kecamatan Tugu memiliki ekosistem mangrove yang masih baik dibandingkan dengan tiga kecamatan lainnya yang berada di Kota Semarang. Perbaikan ekosistem mangrove di Kelurahan Mangunharjo menjadi prioritas utama rehabilitasi mangrove. Penelitian ini bertujuan untuk menentukan tingkat keanekaragaman spesies mangrove yang terdapat di ekosistem mangrove Kelurahan Mangunharjo Kecamatan Tugu Kota Semarang berdasarkan zonasinya. Penelitian dilakukan pada bulan Februari–Maret 2018. Pengambilan sampel menggunakan metode kombinasi, yaitu antara systematic sampling dengan teknik analisis vegetasi menggunakan quadrat sampling technique. Terdapat tiga stasiun pengambilan data yang ditentukan berdasarkan jarak dari garis pantai hingga daratan. Data dianalisis secara statistik deskriptif kuantitatif. Hasil penelitian menunjukan bahwa keanekaragaman spesies mangrove yang terdapat di Kelurahan Mangunharjo mempunyai tingkat keanekaragaman rendah hingga sedang (0.72-1.32). Hal ini dikarenakan ekosistem mangrove wilayah Mangunharjo merupakan ekosistem buatan, dengan jenis dan jumlah mangrove yang dominasi oleh Rhizophora mucronata dan Avicennia marina.  Terdapat tujuh spesies mangrove yang ditemukan pada zona terbuka, empat spesies pada zona tengah dan empat spesies pada zona daratan.
PEMBUATAN APLIKASI SOAL BERBASIS ANDROID DI SD LABSCHOOL UNNES
Authors: Nugraheni Nursiwi , Sari Elok Fariha , Sismulyasih Nugraheti , Ansori Isa
Published: April 2019

Tujuan pengabdian ini adalah untuk membantu Guru SD Labschool UNNESdalam mengembangkan penilaian kognitif untuk latihan siswa mengunakan aplikasi berbasis android. Pelatihan ini diharapkan mampu menjawab kebutuhan guru SD dalam memodifikasi pembuatan soal di SD. Metode yang akan digunakan dalam pengabdian ini adalah metode pelatihan dengan ceramah dan diskusi dilanjutkan dengan workshop pembuatan soal latihan siswa mengunakan aplikasi berbasis android. Pendampingan oleh tim pengabdi dilakukan sampai dengan tahap pembuatan aplikasi soal berbasis android. Dari 4 kelompok yang dibuat, 3 kelompok diantaranya sudah berhasil membuat aplikasi penilaian berbasis android. Hal ini sesuai target pengabdi yaitu 75% peserta dapat membuat aplikasi soal berbasis android. Para peserta pengabdian dapat menerapkan dan mengembangkan ilmu pengetahuannya dalam pembelajarannya.
PENINGKATAN KOMPETENSI GURU DALAM SPEAKING ENGLISH FOR INSTRUCTIONAL PURPOSES UNTUK PENGAJARAN BILINGUAL DI SD ISLAM AL AZHAR 29 BSB SEMARANG
Authors: Fitriati Sri Wuli , Farida Alief Noor
Published: April 2019

Memperkuat Sejak tahun 2016, SD Islam Al Azhar 29 BSB Semarang merintis pengajaran bilingual (yaitu, pengajaran dalam dua bahasa, Bahasa Indonesia dan Bahasa Inggris) untuk mata pelajaran Matematika dan IPA. Tantangan utama program ini adalah kompetensi guru dalam berbahasa Inggris. Oleh karena itu, dibutuhkan pelatihan peningkatan kemampuan guru berbahasa Inggris, khususnya Speaking English for Instructional Purposes. Pelatihan yang bertujuan untuk mempersiapkan penyelenggaraan kelas bilingual ini dilaksanakan dalam lima kali pertemuan. Setiap pertemuan berlangsung selama 2 – 2,5 jam. Teknik kegiatan meliputi: pronunciation drills, group and class discussions, modelling, penyusunan skenario pengajaran (teaching scenario), dan microteaching. Peserta selalu antusias dalam setiap kegiatan. Setiap sesi microteaching berakhir, dilakukan refleksi. Feedback dari peserta lain terhadap guru yang melakukan microteaching sangat supportif dan konstruktif. Pada akhir pelatihan, terdapat peningkatan kompetensi guru-guru peserta pelatihan dalam menggunakan ungkapan-ungkapan bahasa Inggris untuk tujuan pengajaran. Mereka tampak lebih percaya diri dan lebih lancar berkomunikasi dalam bahasa Inggris. Pihak sekolah mengharapkan pelatihan berkelanjutan untuk menyukseskan program pengajaran bilingual di sekolah.
PENGEMBANGAN KEPROFESIAN BERKELANJUTAN DALAM PEMBUATAN PUBLIKASI ILMIAH MELALUI WORKSHOP DAN PENDAMPINGAN BAGI GURU SMA KOTA SEMARANG
Authors: Rusdarti Rusdarti , Slamet Achmad , Prajanti Sucihatiningsih Dian Wisika
Published: April 2019

Kualitas tenaga pendidik sebagai agen pembelajaran di satuan pendidikan, guru yang profesional diharapkan dapat meningkatkan mutu pembelajaran dan mutu pendidikan di Indonesia secara berkelanjutan. Peningkatan kualitas pendidikan merupakan suatu proses yang terintegrasi dengan proses peningkatan kualitas sumber daya manusia itu sendiri. Dalam rangka peningkatan kualitas SDM peran guru sebagai tenaga pendidik dituntut menjadi tenaga profesional. Pentingnya peran guru sangat menentukan berhasilnya usaha peningkatan mutu pendidikan, terutama pada jenjang pendidikan dasar dan menengah. Peran guru secara konkrit dijelaskan, bahwa guru lebih tepat memiliki falsafah dan tujuan pendidikan, kriteria keberhasilan pendidikan, ilmu dan teori pendidikan yang relevan, struktur pendidikan, kurikulum, organisasi dan kepemimpinan pendidikan maupun pembiayaan pendidikan. Kegiatan ini bertujuan untuk meningkatkan profesionalisme guru melalui pembuatan proposal penelitian tindakan kelas dan guru menjadi terbiasa melakukan karya pengembangan profesi melalui budaya meneliti dengn permasalahan di kelas yang dialami dan menulis di journal. Dalam upaya meningkatan profesionalisme dan meningkatkan budaya akademik, yang merupakan nilai-nilai budaya mutu. Hasil akhir adanya workshop dan pendampingan ini adalah guru dapat membuat penelitian tindakan kelas secara berkelanjutan dan dapat menulis karya pengembangan profesi untuk pengembangan diri tidak hanya PTK saja; Guru menguasai dan dapat memilih model-model pembelajaran sesuai kebutuhan dalam pembelajaran. Hal ini menunjukkan kegiatan pengabdian kepada masyarakat sudah dilaksanakan sesuai dengan tujuan dan harapan antara masyarakat sasaran yaitu para guru SMA Kota Semarang dengan pengabdi yang dapat meningkatkan profesionalisme guru dalam karya pengembangan profesi melalui workshop dan pendampingan pembuatan karya ilmiah pengembangan profesi dan pengembangan diri dari tim pengabdi merupakan hasil nyata oleh para guru yang mengikuti workshop dan pendampingan PKB
Determining radium-226 concentration from radon-222 emanation in building materials: a theoretical model
Authors: Barreto Rafael Carvalho , Perna Allan F. N. , Narloch Danielle C. , Del Claro Flavia , Correa Janine N. , Paschuk Sergei A.
Published: April 2019

It was developed an improved theoretical model capable to estimate the radium concentration in building materials solely measuring the radon-222 concentration in a confined atmosphere.This non-destructive technique is not limited by the size of the samples, and it intrinsically includes back diffusion.The resulting equation provides the exact solution for the concentration of radon-222 as a function of time and distance in one dimension.The effective concentration of radium-226 is a fit parameter of this equation.In order to reduce its complexity, this equation was simplified considering two cases:low diffusion in the building material compared to the air, anda building material initially saturated with radon-222.These simplified versions of the exact one dimension solution were used to fit experimental data.Radon-222 concentration was continuously measured for twelve days with an AlphaGUARD detector, located at the Laboratory of Applied Nuclear Physics at Universidade Tecnologica Federal do Parana (UTFPR).This model was applied to two different materials: cement mortar and concrete, which results were respectively (15.7 +- 8.3) Bq/kg and (10.5 +- 2.4) Bq/kg for the radium-226 effective concentration.This estimation was confronted with the direct measurements of radium in the same materials (same sources) using gamma-ray spectrometry, fulfilled at Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), which results were respectively (13.81 +- 0.23) Bq/kg and (12.61 +- 0.22) Bq/kg.
GALLIUM-67 CITRATE USED AS A TRACER OF ACETONE PRODUCTION ROUTE
Authors: Mesquita Carlos Henrique de , Calvo Wilson Aparecido Parejo , Aoki Pedro Eiti , Silva Valdir Cosmo da , Haraguchi Márcio Issamu , Velo Alexandre França , Alvarez Alexandre Gimenes , Hamada Margarida Mizue
Published: April 2019

In this work the pathway of the chemical product and the kinetics parameters were evaluated in a laboratory plant settled, using 0.4 GBq (10 mL) of 67Ga citrate as radiotracer and 18 NaI(Tl) radiation detectors.  The AnaComp program was used to estimate the kinetic para ameters of the acetone production. The yield of the acetone production was estimated by the percentage ratio between the areas under the curve (AUC) of the curve profiles of the final product compartment divided by the concentration found inside the chemical reactor whose result was 87% yield during the first 30 minutes of reaction.
Removal of cobalt from lubricant oil by the use of bentonite: equilibrium, kinetic and adsorption preliminary studies
Authors: CUCCIA VALERIA , SELES SANDRO ROGÉRIO NOVAES , LADEIRA ANA CLAUDIA QUEIROZ
Published: April 2019

Radionuclides may contaminate lubricant oils in nuclear power plants. In Brazil, this kind of waste has been stored in the generator’s facilities, awaiting treatment alternatives. This work intends to investigate a process to treat it for final deposition, using bentonite as sorbent material. This process will result in decontaminated oil, free from radiological control, and radioactive loaded sorbent, with considerable volume reduction of the radioactive waste. The study focuses in cobalt removal from a simulated oil waste (non-active). The production of the simulated waste is described. Bentonite was used for equilibrium time determination, kinetic and adsorption studies. Cobalt adsorption equilibrium was rapidly attained after 30 minutes. The data was used for modelling the system’s kinetic, applying the pseudo first and pseudo second order equation models. Experimental data fitted to pseudo second order model, supporting the assumption that the adsorption is due to chemisorption. Batch sorption tests were conducted and the results fitted to Langmuir and Freundlich sorption models. Both isotherm models chosen for this work did not fit to the experimental data. Thus, these are preliminary results and the studies must be repeated to evaluate data variability and better statistical inference. Other isotherm models must be evaluated to choose the best fitted one and describe the sorption of cobalt on bentonite in oil matrix. Even though, bentonite has considerable potential as sorbent for the removal of cobalt from lubricant oil. Finally, the results might be extended to other kinds of radioactive oils and radioactive organic wastes.
Remediation of Caldas site by natural attenuation
Authors: Chaves Renata Dias Abreu , Rodrigues Paulo Cesar Horta , Ladeira Ana Claudia Queiroz
Published: April 2019

Acid mine drainage (AMD) is one of the main environmental issue caused by chemical and bacterial oxidation of pyrite (FeS2) and other sulfite minerals when exposed to atmospheric conditions during mining. In Brazil, AMD occurs in a former uranium mine and contains radionuclides and other elements, which are precipitated from acidic water by liming. Due to the inefficiency of the treatment, contaminants overflow to the water reservoir of Indústrias Nucleares do Brasil – INB in Caldas. The multiplicity of interactions that can occur between the contaminants and the sediments of the reservoir requires a broader approach in order to understand the fixation and/or transport of these elements. In this work the natural remediation approach is reviewed and an initial chemical and radiochemical characterization of the reservoir sediments is presented. Uranium was determined by spectrophotometry, Ra-226, Ra-228 and Pb-210 by gamma spectrometry and zinc by ICP-OES. Twenty-six sediment samples were collected in the reservoir and a bathymetry survey by sonar was performed to determine the thickness of the sediment layer. All the data were processed using the ArcGIS program. To assess the potential mobility and bioavailability of contaminants and to study the role of bacterial sulfate reduction in the immobilization of these contaminants, Acid-volatile sulfide (AVS) analyzes will be performed as a further step.
Micro-homogeneity evaluation of a bovine kidney candidate reference material
Authors: Castro Liliana , Moreira Edson Gonçalves , Vasconcellos Marina Beatriz Agostini
Published: April 2019

The minimum sample intake for which a reference material remains homogeneous is one of the parameters that must be estimated in the homogeneity assessment study of reference materials. In this work, Instrumental Neutron Activation Analysis was used to evaluate this quantity in a bovine kidney candidate reference material. The mass fractions of 9 inorganic constituents were determined in subsamples between 1 and 2 mg in order to estimate the relative homogeneity factor (HE) and the minimum sample mass to achieve 5% and 10% precision on a 95% confidence level. Results obtained for HE in all the analyzed elements were satisfactory. The estimated minimum sample intake was between 2 mg and 40 mg, depending on the element.
The effect of gamma radiation on the structure of graphene oxide and graphene oxide functionalized with amino-PEG
Authors: SOARES Jaqueline Jamara SOUZA
Published: April 2019

The functionalization of graphene oxide (GO) with polyethylene glycol (PEG) has been widely used in drug delivery systems. This nanocomposite exhibits excellent stability in the presence of high concentrations of salts and proteins and shows to be less toxic than its raw form in vitro and in vivo. However, it must be sterilized before use in the medical field and the gamma irradiation shows a promising option for this purpose. Sterilization by ionizing energy through gamma rays, generated by Cobalt-60 self-disintegration, consists in exposing the materials to short electromagnetic waves. The irradiation process provides substantial advantages when compared to thermal and chemical processes such as more precise control of the process, production of products with superior qualities, lower energy consumption and less environmental pollution. In this work the effect of gamma radiation on the structure of GO and GO functionalized com Amino-PEG (GO-PEG-NH2) irradiated with different doses (15, 25, 35 and 50 kGy) and rate dose 7.31 kGy.h - 1 was evaluated. The analyses were performed by Fourier-transform infrared spectroscopy (FT-IR) and Raman spectroscopy. The results showed that the methods for the synthesis of GO and GO-PEG-NH2 was effective since there was confirmation of the surface oxidation of materials and functionalization with the PEG-NH2 and the sterilization by gamma radiation does not caused any defects on materials.
Concentrations of Se, Ba, Zn and Mn in Brazil nuts
Authors: Armelin Maria José Aguirre , Maihara Vera Akiko , Cozzolino Silvia M.F. , Silva Paulo S.C , Saiki Mitiko
Published: April 2019

The concentrations of Se, Ba, Zn and Mn were determined in samples of Brazil nuts collected in two ways: a) in a production farm predominantly for export and, b) in various points of sale from different regions of Brazil. Instrumental neutron activation analysis was the analytical technique used in this study. Results indicate that the concentrations of Se and Ba varied greatly among the Brazil nut samples analyzed. This large variability may be related to the soil characteristics from which the nuts were produced. An inverse correlation was observed between the concentrations of Se and Ba. On the other hand, the concentrations of Zn and Mn did not show significant differences among these samples.
Neutron Activation Analysis characterization procedures for fish consumed at São Paulo City
Authors: Tappiz Bruno , Moreira Edson Gonçalves
Published: April 2019

The characterization of edible tissues of fishes consumed by humans is very important for determination of several toxic and potentially toxic elements, ensuring the food safety. The Instrumental Neutron Activation Analysis (INAA) comparative method allows the determination of several of these elements, as well as others, for example of nutritional character. This study is part of an International Atomic Energy Agency (IAEA) technical cooperation project of Latin America and Caribbean countries to ensure the quality of food and biomonitoring of contaminants in shellfish and fishes. Ten specimens of 4 of the most consumed fish in São Paulo city: whitemouth croaker (Micropogonias Furnieri), smooth weakfish (Cynoscion learchus), common snook (Centropomus undecimalis) and Brazilian sardine (Sardinella brasiliensis) were analyzed. Complete procedures for analysis, which includes purchase in the largest warehouse in Latin America, transport to the laboratory, storage, freeze-drying, milling, weighting and others preparations of the subsamples, and the short irradiation parameters for the determination of Br, Cl, K, Mg, Mn and Na are reported. Results obtained under the same irradiation conditions for reference materials (oyster and mussel tissues) for macro and microelements are presented and are in agreement with their certificates, which indicate that the performed analyses were appropriate. Regarding to the mass fraction values obtained for the fish samples, they were in agreement with the literature.
Portable grazing exit X-ray fluorescence system using a low-power X-ray tube
Authors: Dos Santos Ramon Silva , De Oliveira Davi Ferreira , De Assis Joaquim Teixeira , Dos Anjos Marcelino José
Published: April 2019

In this work was developed a portable system of grazing exit X-ray fluorescence (geometric 90° - 0°) that can be applied in several areas science and technology. GE-XRF portable system is formed by a mini X-ray tube of low power (anode of Au) and a SiPIN detector. The reflectors used as sample support (sampler carrier) were quartz discs. The grazing exit angle was experimentally determined by measuring a cooper solution (10 μg.g-1). The accuracy of the system was checked using multielement reference solution as standard reference material. The relative errors between measured and certified values are in the range of 4 to 19%. The first results showed a background was drastically reduced at grazing exit angles, enabling trace elemental analysis. The system of GE-XRF proved to be quite stable and reproducible. This paper shows that it is possible to produce a portable system of grazing exit X-ray fluorescence compact, efficient, low-cost and easy-to-handle instrumentation using a low power X-ray tube and a SiPIN compact detector.
Thermoluminescent properties of LaAlO3:C crystals synthesized by solid state reaction applied to UV Dosimetry
Authors: Alves Neriene , Ferraz Wilmar Barbosa , Faria Luiz Oliveira
Published: April 2019

In this work, the thermoluminescent (TL) response of carbon doped lanthanum aluminate crystals grown by solid state reaction method was investigated.  Three syntheses using different combinations of Al2O3, La2O3 and 0.1 wt % of carbon atoms were conducted. The 1:1 mixture of aluminum and lanthanum oxide was mixed with 0.1wt.% carbon and annealed at 1700°C for two hours in a hydrogen atmosphere. The X-ray diffraction analysis revealed the formation of the rhombohedral LaAlO3 crystallographic phase. Ultraviolet-visible spectroscopies were obtained and F and F+ centers were identified ascribed.  Fourier transform infrared spectroscopic data show higher and lower frequencies assigned to AlO6 octahedra in LaAlO3. The UV irradiations were carried out using a commercial 8W UV lamp. Thermoluminescence measurements were performed at a Harshaw 4500 TL reader. The three syntheses were very efficient to obtain carbon doped LaAlO3 crystals with high thermoluminescent output, for low exposure rates of UVR fields.
Credible accounts
Authors: Bull Ray
Published: April 2019

This article examines research on cues to credibility, especially those within the content of what people say. It focuses both on valid cues and on the false beliefs that many people share about cues to truth/lies. Mention is made that liars try to appear truthful, and that some lawyers/advocates when cross-examining people try to make them seem like liars. What constitutes the good investigative questioning of people is then described, as is a recent recommendation of the United Nations.
On the meaning of Feifa Quanyi in Chinese legal language
Authors: Mannoni Michele , Cao Deborah
Published: April 2019

‘Illegal rights’ is an oxymoron in many European languages, including English. A new term feifa quanyi (illegal rights and interests) has appeared in recent times and is now being used increasingly in court decisions and litigation in China. In this study we use a semiotic and corpus-based approach to examine the Chinese legal texts and court decisions containing the phrase to ascertain the meanings of the phrase. The various implications of the analysis of this unique new legal usage are discussed in terms of the study of Chinese legal language with semiotic and corpus analysis.
Genetic Profiling of Non-Small Cell Lung Cancer at Development of Resistance to First- or Second-Generation EGFR-TKIs by CAPP-Seq Analysis of Circulating Tumor DNA
Authors: Otsubo Kohei , Sakai Kazuko , Takeshita Masafumi , Harada Daijiro , Azuma Koichi , Ota Keiichi , Akamatsu Hiroaki , Goto Koichi , Horiike Atsushi , Kurata Takayasu , Nakagaki Noriaki , Nosaki Kaname , Iwama Eiji , Nakanishi Yoichi , Nishio Kazuto , Okamoto Isamu
Published: April 2019

Patients with non-small cell lung cancer (NSCLC) treated with epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) eventually acquire resistance to these drugs. The identification of various resistance mechanisms for determination of subsequent treatment for these patients will require a method for simultaneous detection of multiple genetic alterations with high sensitivity. We performed cancer personalized profiling by deep sequencing (CAPP-Seq) with circulating tumor DNA obtained from patients with NSCLC who acquired resistance to first- or second-generation EGFR-TKIs. Plasma samples from 27 patients were analyzed, and 24 samples underwent CAPP-Seq successfully. Original activating EGFR mutations were detected in 23 patients, with the remaining patient showing MET amplification. With regard to known mechanisms of EGFR-TKI resistance, the T790M mutation of EGFR was detected in 17 of the 24 patients, MET amplification in 9 patients (6 of whom also harbored T790M), ERBB2 amplification in 2 patients (1 of whom also harbored T790M), and EGFR amplification in 4 patients (all of whom harbored T790M). Our results thus show that CAPP-Seq is applicable to clinical samples for the identification of multiple somatic mutations in circulating tumor DNA obtained from patients with NSCLC at the time of disease progression during treatment with first- or second-generation EGFR-TKIs. Patients positive for the T790M mutation of EGFR were also found to constitute a molecularly heterogeneous population.

Key Points

CAPP-Seq is applicable to clinical samples for the identification of multiple somatic mutations. The T790M mutation of EGFR is associated with amplification of MET, ERBB2, or EGFR in NSCLC patients resistant to EGFR-TKIs. T790M-positive patients are molecularly heterogeneous, and genetic alterations coexisting with T790M may differ between patients treated with first-generation or second-generation EGFR-TKIs.