bluuebunny/crossref_metadata_2025 huggingface dataset:
CdSe/CdS core/shell in polyacrylamide polymer matrix for Quantumdots Luminescent solar concentrator
Authors: Alkarem Eman abd
Published: August 2020

Luminescent solar concentrator (LSC) are used to enhance       photoresponsivity of solar cell. The Quantumdots luminescent solar concentrator (QDLSC) consists of CdSe/CdS core/shell nanoparticles embedded in polyacrylamide polymer matrix positioned on the top surface of the silicon solar cell. This procedure improves the conversion efficiency of the bare silicon solar cell. The conversion efficiency of the solar cell has increased from 7.3% to 10.3%.  this improvement is referred to the widening of the response spectral region window  of the a- Si. Solar cell.
Fabrication of Electroluminescence Device for PEDOT:PSS / ploy TPD/Eu2O3 Nanoparticles junction
Authors: Mohammed Hussein Riyadh
Published: August 2020

We manufactured the nanoparticles light emitting diode (NPs-LED) for organic and inorganic semiconductors to achieve electroluminescence (EL). The nanoparticles of Europium oxide(Eu2O3) were incorporated into the thin film layers of the organic compounds, poly(3,4,- ethylene dioxythiophene)/polystyrene sulfonic acid (PEDOT:PSS), N,N’–diphenyl-N,N’ –bis(3-methylphenyl)-1,1’-biphenyl 4,4’- diamine (poly TPD) and polymethyl methacrylate (PMMA), by the spin coating and with the help of the phase segregation method. The EL of NPs-LED, was study for the different bias voltages (20, 25, 30) V at the room temperature, from depending on the CIE 1931 color spaces and it was generated the white light at 20V, the orange light generation at 25Vand the red light at 30 V. That by benefit from transition between deep levels in energy gap for Eu2O3 NPs (surface state) and magnetic dipole states for Eu+ (5D0-3 and5L6 to 7F0-6). The Current – Voltage (I-V) Behavior demonstrate that the current comparative with the voltage was good and the knee voltage was 5 V. The EL spectrum shows a broad band emission, the range from EL 350 - 700 nm. Finally, the range of correlated color temperature (CCT) it was between (1200 to 4000).
Studying the Impact Strength of Layered Denture Base Resin
Authors: Hannon Samar abbas , Hussain Wafaa A. , Hussain Selma M.
Published: August 2020

This paper displays the effect of uncoated and coated chopped carbon fibers with alumina Al2O3 or Tri calcium phosphate (TCP) on the impact strength of acrylic poly methyl methacrylate (PMMA) denture base resin. To improve bonding between carbon fibers and coating materials powders, the surface of carbon fibers has been treated with Para amino benzoic acid (C9H10N2O3) and poly vinyl alcohol (PVA) was also used. The morphology of the coating layers has been examined by field emission scanning electron microscope (FE-SEM). From the results, PMMA reinforced with uncoated chopped carbon fiber has high impact strength value but still have bad aesthetic.  Samples prepared by coated carbon fiber with Al2O3 or TCP have high impact strength values when compared to control group with good aesthetic. Impact strength was increased in samples when PVA increased and fibers amount decreased.
Increasing the conversion efficiency of KTP crystal using the pump-power technique
Authors: Jamal Raied K. , Rustum Russul Khalil
Published: August 2020

In this study, the effect of pumping power on the conversion efficiency of nonlinear crystal (KTP) was investigated using laser pump-power technique. The results showed that the higher the pumping power values, the greater the conversion efficiency (η) and, as the crystal thickness increases within limitations, the energy conversion efficiency increases at delay time of (0.333 ns) and at room temperature. Efficiency of 80% at length of KTP crystal (L = 1.75 X 10-3 m) and Pin = 28MW, and also, compare the experimental results with numerical results by using MATLAB program.
Synthesis and spectroscopic study of highly fluorescent carbon dots derived from orange juice with Stilbene 420 dye
Authors: Mahmood Yazan Abdulmuttaleb , Chiad Bahaa T.
Published: August 2020

Highly-fluorescent Carbon Quantum Dots (CQDs) are synthesized in simple step by hydrothermal carbonization method of natural precursor such as orange juice as a carbon source. Hydrothermal method for synthesized CQDs requires simple and inexpensive equipment and raw materials, thus this method are now common synthesis method. The prepared CQDs have ultrafine size up to few nanometers and   several features such as high solubility in water, low toxicity, high biocompatibility, photo-bleaching resistant, Chemical inertness and ease of functionalization which qualifies it for use in many applications such as bio-imaging, photo-labeling and photo-catalysis.

       This research demonstrates the method of prepared highly fluorescence CQDs and also briefly introduce the most commonly used techniques for characterizing CQDs and the results obtained and studying their optical properties by adding Stilbene 420 dye in a method that changes the input power of used laser and prove that the output power intensity depends on the input power.
Evaluation of progesterone and progesterone receptor gene PROGINS polymorphism in the development of some forms of premenstrual syndrome
Authors: Pakharenko L. V.
Published: August 2020

One of the most common neuroendocrine syndromes in gynecology is premenstrual syndrome (PMS). The article is devoted to study of pro-gesterone level and frequency of polymorphic variants T1T2 of progesterone receptor gene PROGINS, as well as their possible relationship in patients with various forms of PMS. The object of the study were 50 women of reproductive age with diagnosis of PMS, including 25 women with edematous form of the disease, 25 – with neuropsychical form. Mild form of disease had 25 women, severe form – also 25 persons. Control group consisted of 25 women without diagnosis of PMS. Progesterone level was determined in blood serum twice in the first and second phase of menstrual cycle. Polymorphism T1T2 of progesterone gene receptor PROGINS was studied using polymerase chain reaction.We found hypoprogesteronemia of luteal phase of menstrual cycle in women with PMS, especially pronounced in persons with edematous and severe forms of the disease (p<0.05).Polymorphic variant T1T2 of gene PROGINS can be considered as a marker of development of PMS. T1T1 genotype was significantly as-sociated with development of edematous form (χ2=4.50; р=0.03) and its presence may indicate a tendency to develop of severe form of PMS (χ2=3.21; р=0.07). T2 allele can be considered as a protective mechanism for the appearance of PMS, particularly its edematous and severe forms, in which the presence of T2 allele reduces the risk of PMS, respectively 3.0 times (χ2=4.50; p=0.03, OR=0.20 95% CI 0.05–0.78; p=0.02) and 1,71 times (χ2=3.21, p=0.07, OR=0.27, 95% CI 0.08–0.95, p=0.04) compared with control group. Reduced blood level of progesterone in women with PMS correlated with the presence of T1T1 genotype of gene PROGINS. By edematous, neuro-psychical, severe and mild forms of PMS and the presence of T1T1 genotype there were significantly low levels of this hormone in the second phase of menstrual cycle (p<0.05) relative to women with the same genotype in the control group of. Furthermore, there was no statistically significant difference in progesterone level in women with T1T2 genotype in these groups compared with healthy women with same genotype (p>0.05)
The modern approaches for the assessment of fetal well-being
Authors: I. V. Lakhno
Published: August 2020

Fetal growth restriction is known as an intrauterine pathological condition that is associated with some diseases in a further lifetime. Fetal distress is a satellite of fetal growth restriction. Timely and true diagnosing of fetal distress is still an issue in perinatology. This case study showed that non-invasive fetal electrocardiography could contribute to better diagnosing of fetal distress. The variables of beat-to-beat variations, fetal heart rate variability and fetal autonomic brain age score should be investigated as the biophysical markers of fetal deterioration.
Analisa Pengaruh Temperatur dan Tekanan Injeksi Moulding terhadap Cacat Produk
Authors: Yanto Heri , Saputra Ihsan , Satoto Sapto Wiratno
Published: August 2020

Salah satu hal yang menjadi tolak ukur dalam menilai produktifitas dan efisiensi suatu industri adalah dengan melihat tingkat cacat produk yang terjadi dalam menghasilkan suatu produk. cacat produk yang sering terjadi antara lain, short moulding, warpage, sink mark, flow line, flashess, bubble, hole/gap, over moulding. Pada penelitian ini di kaji tentang pengaruh temperatur dan tekanan  pada mesin injeksi moulding berbahan plastic jenis (pvc compound),dengan melakukan analisa penyebab cacat produk  berdasarkan parameter temperatur dan tekanan pada barrel, Tujuan dari penelitian ini adalah untuk meminimalisir cacat produk yang dihasilkan mesin injection moulding dan mendapatkan setting parameter moulding yang tepat, Metode yang akan dilakukan yaitu memvariasikan setting termperatur dengan variabel bebas yaitu 150oC, 170oC, 190oC dan variable bebas pada tekanan 60 Mpa dan 100 Mpa, di lakukan proses secara bertahap sebanyak 3 kali running mesin dalam satu kali setting parameter untuk memastikan berapa banyak cacat produk. Dari hasil pengaturan parameter mesin injeksi moulding telah ditemukan parameter yang optimal dengan cacat produk yang paling sedikit pada variasi temperatur 170oC dan tekanan 60 MPa.
Perancangan Mula Klinik Apung untuk Pelayanan Kesehatan Masyarakat Lintas Hinterland Batam
Authors: Prasetyo Naufal A , Wiratno Satoto Sapto
Published: August 2020

Unjuk kerja armada terapung (kapal) secara dinamis bergantung pada perilaku dan respon hull terhadap kondisi perairan dimana armada/ kapal dioperasikan. Pada saat beoperasi, hull akan mengalami gerakan yang disebabkan kapal itu sendiri (maneuverability) maupun dari faktor luar (seakeeping). Faktor luar misalnya berupa cuaca buruk yang mengakibatkan terjadinya gelombang besar dapat membahayakan keselamatan kapal apabila kapal tidak mampu merespon gelombang tersebut. Untuk itulah kapal harus memiliki performa teknis yang memenuhi batasan kriteria. Armada klinik apung beroperasi di perairan dengan karakter gelombang dinamis memerlukan penilaian seakeeping (ketegaran kapal) sehingga layak secara teknis dan bisa menjadi sarana pelayanan kesehatan masyarakat yang handal dengan memperhatikan kenyamanan awak kapal dan pasien. Penilaian ketegaran fisik menggunakan pendekatan empiris yang mengacu pada batasan kriteria menurut kondisi laut dan skenario navigasi pelayaran. Penilaian kinerja seekeeping didasarkan pada osilasi respon dinamis kapal pada gelombang tak beraturan, sesuai dengan kondisi perairan.
Kipas Angin Pengikut Manusia Berdasarkan Wajah
Authors: Prasatia Wahyudi , Kamarudin Kamarudin
Published: August 2020

Kemajuan teknologi membuat kebutuhan terhadap sistem yang otomatis meningkat, salah satunya membuat kipas dapat tracking manusia secara otomatis. Pada penelitian ini bertujuan untuk mengembangkan sebuah sistem kipas yang dapat men-tracking manusia berdasarkan wajah dan dapat membedakan wajah dengan hambatan lain disekitarnya, sehingga manusia tidak perlu mengatur secara manual dalam mengarahkan kipas agar mendapat tiupan angin dari kipas. Untuk mendeteksi wajah manusia digunakan kamera dari smartphone android yang telah terintegrasi dengan metoda deteksi Haar Cascade yang tersedia pada library OpenCV. Sedangkan untuk melakukan tracking maka digunakan pengendali PID dengan dengan metode tuning Zigler Nichols yang terintegrasi dengan motor DC. Berdasarkan hasil percobaan sistem dapat melakukan tracking terhadap wajah manusia dengan rata-rata error sebesar 4.14%, sementara pengujian terhadap deteksi wajah mempunyai tingkat keberhasilan 100% dalam keadaan wajah frontal. Sementara sistem dapat men-tracking manusia berdasarkan wajah dengan keberhasilan 95%. Adapun kesalahan diakibatkan oleh sistem mekanik gearbox motor dc dan posisi hardware kamera yang tidak lurus terhadap objek wajah.
RANCANG BANGUN SISTEM PERENDAMAN SESAAT YANG DILENGKAPI DENGAN SENSOR LEVEL
Authors: Futra Asrizal Deri , Putra Iwa Tama , Risandriya Sumantri Kurniawan
Published: August 2020

Sistem Perendaman Sesaat (SPS) merupakan salah satu teknologi pada kultur jaringan tumbuhan dimana jaringan tumbuhan direndam secara berkala. Pada saat perendaman, media cair dialirkan dari wadah media cair ke wadah jaringan. Setelah proses perendaman selesai, media cair akan mengalir dengan sendirinya dari wadah jaringan ke wadahnya karena wadah media cair ditempatkan lebih rendah dibandingkan wadah jaringan. Sistem perendaman ini terdiri dari lima wadah media cair dan lima wadah jaringan yang dilengkapi dengan sensor level. Data waktu dan lama perendaman disimpan pada micro SD untuk melihat apakah SPS ini berjalan sesuai dengan waktu yang telah ditentukan. Pada saat proses perendaman, udara yang dialirkan menuju wadah media cair divariasikan 1 bar dan 1,5 bar untuk memindahkan air 254,5 ml yang ada dalam wadah media cair. Tekanan 1 bar sudah dapat mengalirkan media cair dari wadahnya ke wadah jaringan dan  menimbulkan gelembung-gelembung air yang lebih sedikit dibandingkan tekanan 1,5 bar. Dari hasil data rekaman pada micro SD didapatkan bahwa waktu perendaman pada SPS ini sesuai dengan waktu yang telah ditentukan.
ANALISIS PERBANDINGAN ALGORITMA NAIVE BAYES, J48,DAN RANDOM FOREST TREE DALAM PENINGKATAN LOYALITAS PELANGGAN UMKM DENGAN VOUCHER BELANJA
Authors: Cendana Maya , Permana Silvester Dian Handy
Published: August 2020

Teknologi informasi sudah digunakan sejak lama untuk bisnis UMKM. Banyak masyarakat yang memiliki bisnis UMKM menggunakan toko online untuk mempromosikan bisnisnya. Untuk dapat menarik pelanggan yang lama agar berbelanja kembali ke toko online, salah satunya dengan memberikan voucher belanja. Voucher belanja diberikan untuk pelanggan lama yang mempunyai potensial untuk berbelanja kembali ke toko online. Dalam menentukan pelanggan mana yang tepat dibutuhkan algoritma penambangan data untuk mencari informasi yang tepat di mana pelanggan tersebut dapat berbelanja kembali. Namun kesalahan memilih algoritma dapat mengakibatkan tidak optimalnya pendapatan yang diproyeksikan. Dalam penelitian ini akan menganalisis dan membandingkan algoritma Naive Bayes, J48, dan Random Forest Tree untuk studi kasus toko online. Penelitian ini melibatkan 7 kriteria yang akan digunakan untuk menjadi bahan dalam pengolahan data. Dari hasil penelitian ini didapatkan random forest tree adalah algoritma terbaik untuk menentukan potensial dari pelanggan toko online. Hasil penelitian ini digunakan untuk membantu proses pengambilan keputusan pemberian voucher belanja kepada pelanggan agar bisnis UMKM dapat berjalan dan mendapatkan keuntungan yang optimal.
AKSES KONTROL KOTAK KUNCI RUANG KELAS BERBASIS SMARTPHONE ANDROID
Authors: Arifin Muhammad , Firrizqi Egi Fazar , Sani Abdullah
Published: August 2020

Perkembangan Android menjadi sebuah sistem operasi pada smartphone sudah banyak digunakan hampir di seluruh penjuru dunia. Sistem operasi android ini juga merupakan merupakan sistem operasi berbiaya murah. Pemanfaatan sistem operasi android bersamaan dengan mikrokontroler mempunyai banyak kegunaan. Salah satu kegunaannya adalah diaplikasikan sebagai kotak tempat penyimpanan kunci sehingga dengan memanfaatkan sistem operasi android monitoring pengguna/peminjam kunci dapat dilakukan dengan mudah. Pengujian yang dilakukan pada perangkat yang dibuat meliputi pengujian aplikasi, pengujian aplikasi terhadap perangkat keras, dan pengujian tampilan data di website. Hasil dari pengujian fungsi menunjukkan bahwa kotak tempat penyimpanan kunci bekerja secara baik dan monitoring menggunakan website sudah bisa lakukan sehingga data dari monitoring yang didapat adalah real time.
MODIFIKASI MESIN MOTOR RODA DUASERI BEAT ESP 2017 HEMAT ENERGI DENGAN METODE STROKE UP DAN BORE UP
Authors: Faizin Kholis Nur , Aminudin Achmad
Published: August 2020

Penelitian ini dilatarbelakangi oleh persediaan bahan bakar minyak di Indonesia yang  semakin menipis, sedangkan kebutuhan masyarakat semakin meningat. Energi tersebut juga tidak dapat diperbarui. Butuh ribuan bahkan jutaan tahun waktu yang dibutuhkan alam untuk membentuk bahan bakar minyak tersebut. Salah satu upayanya adalah untuk mengurangi konsumsi bahan bakar minyak. Usaha penyusun dalam mendukung program penghematan tersebut adalah melakukan modifikasi terhadap kendaraan. Tujuan penelitian dari ini, yaitu ingin mengetahui cara memodifikasi mesin agar menjadi lebih hemat bahan bakar dan mengetahui cara agar tingkat kebisingan suara tidak lebih dari 90 dB. Penelitian ini menggunakan metode stroke up, bore up dan camshaft low profil, sehingga karakter mesin menjadi overstroke. Overstroke berarti jarak stroke lebih panjang dari bore. Kendaraan ini akan menghasilkan kelebihan tarikan awal yang cepat dan torsi yang besar dan kuat serta penggunaan bahan bakar dapat diminimalisir. Penelitian ini diharapkan mampu mengoptimalkan pembakaran di dalam ruang bakar sehingga mereduksi konsumsi bahan bakar dan kebisingan.
SIMULASI SISTEM KONTROL OTOMATIS BEBAN TIDAK SEIMBANG
Authors: Doringin Fanny J , Budiman Marson James , Walukow Stephy
Published: August 2020

Konsumen listrik daya besar atau konsumen yang memiliki gardu distribusi sendiri, seperti Hotel, Perkantoran, Pusat perbelanjaan, Industri, dll penginstalasiannya tersambung dengan listrik 3 fasa, yang meliputi fasa R, fasa S dan fasa T. Dalam perencanaan dan pemasangan instalasi listrik yang dilakukan oleh instalatir (Ahli kelistrikan) selalu mengacu pada rancangan beban yang tersambung di fasa R, S dan T, yang diusahakan seimbang (sama besar), akan tetapi pada pengoperasiannya (ON/OFF)  beban listrik  tidak dapat diatur keseimbangan bebannya pada setiap fasa, karena pengoperasian (ON/OFF) disesuaikan dengan kebutuhan dari peralatan  listrik yang terpasang pada masing-masing fasa, sehingga terjadi beban tidak seimbang. Akibat beban tidak seimbang di setiap fasa dapat menyebabkan terjadinya rugi-rugi daya listrik. Rugi-rugi daya listrik akan semakin besar, jika penambahan beban atau pengembangan instalasi listrik dilakukan tanpa memperhatikan rancangan awal pemasangan instalasi.

Dalam penelitian ini akan dibuat suatu simulasi sistem kontrol yang secara otomatis akan meminimalis terjadinya ketidak seimbangan beban atar fasa. Sistem kontrol akan bekerja secara otomatis untuk menyesuaikan beban antar fasa, dengan cara memindahkan beban yang terdeteksi besar di salah satu fasa ke fasa yang terdeteksi bebennya kecil, sampai terdeteksi bahwa beban pada fasa R, S dan T relative seimbang. Disamping itu, sistem kontrol ini juga dapat mendeteksi apabila terjadi satu atau dua fasa yang hilang (OFF), dimana sistem akan memberikan informasi kepada penggua berupa alarm, yang menunjuka bahwa telah terjadi kehilangan fasa, agar supaya pengguna dapat melakukan tindakan pemadaman listrik secara keseluruan untuk menghindari terjadinya rugi-rugi daya yang besar.

Metode yang digunakan dalam pembuatan sistem adalah metode riset dan pengembangan, dengan tahapan-tahapan mencakup studi literatur, studi lapangan untuk memperoleh data-data sehubunagn dengan pembuatan sistem. Tahapan selanjutnya adalah perancangan perangkat keras dan perangkat lunak yang disimulasikan melalui program Proteus. Tahap selanjutnya adalah melakukan uji coba kerja dari sistem kontrol berdasarkan algoritma sistem yang dibuat lewat simulasi program.

Dari hasil pengujian yang dilakukan, saat terjadi ketidak seimbangan beban, sebagai contoh beban yang terdeteksi pada Fasa R sebesar 2 Ampere, pada Fasa S sebasar 1.5 Ampere dan pada Fasa T sebesar 1 Ampere, maka sistem secara otomatis akan memindahkan salah satu jalur kelistrikan dari Fasa R ke salah satu jalur dari Fasa T, sehingga kelebihan beban yang ada pada Fasa R ditanggulangi oleh Fasa T. disamping itu saat terindikasi ada salah satu fasa yang hilang, maka sistem akan menginformasikan lewat idikator alaram dan tampilan di monitor LCD, bahwa ada fasa yang hilang.
EFFECT OF WELDING SEQUENCE ON MULTI PASS TEMPER BEAD WELDING JOINT OF PT .INKA BOGIE LRT ON DISTORCTION, MICRO STRUCTURE AND HARDNESS
Authors: Munir Moh M , Mukhlis Mukhlis , R Imam Khoirul , B Hendri , A M Syaiful , A Erdiyansyah , W Andi Ari
Published: August 2020

Bogie kereta api merupakan salah satu bagian yang sangat penting, karena bogie menahan beban yang ada pada suatu gerbong kereta api. Karena sifatnya yang sangat penting maka bogie kereta api harus memiliki sifat dan kekuatan yang baik. Bogie hasil proses fabrikasi dengan pengelasan, memerlukan proses annealing untuk mereduksi tegangan sisa yang terjadi. Proses annealing atau Post Weld Heat Treatment tersebut membutuhkan furnace yang besar, energi listrik yang besar, dan tentunya biaya jadi lebih mahal. Pada penelitian ini,   dilakukan alternative  proses  pengelasan dengan teknik  Temper bead welding, pada sambungan frame bogie plate to plate dan plate to round bar. Selain itu juga melakukan proses Post Weld Heat Treatment pada sambungan plate to plte, dan sequence of welding pada sambungan plate to round bar. Hasil penelitian menunjukkan, bahwa proses Temper bead welding yang dilakukan terhadap proses fabrikasi joint bogie LRT plate to plate dan joint plate to round bar, dapat menurunkan nilai kekerasan, namun belum menunjukkan perbedaan yang signifikan. Sedangkan proses Temper bead welding dapat menghasilkan distorsi yang paling kecil pada bogie LRT. Hasil pengukuran distrosi menujukan pengelasan sequence B menghasilkan distorsi paling besar, sedangkan variasi distorsi terkecil adalah varisi sequence C dengan temper bead welding.
PENGATURAN JAM KEDATANGAN TRUK DENGAN MENGGUNAKAN SHIPPING OPERATION DIAGRAM DI PT XYZ
Authors: Hendro Hendrastuti , Imdam Irma Agustiningsih , Anjarsari Justi
Published: August 2020

PT XYZ merupakan sebuah perusahaan yang bergerak dibidang komponen otomotif melakukan proses produksi berdasarkan pesanan dari pelanggan, maka ketepatan waktu pengiriman produk dan kualitas produk yang dihasilkan sangatlah penting. Permasalahan utama PT XYZ adalah adanya keterlambatan pengiriman produk. Permasalahan selanjutnya adalah adanya penumpukan produk jadi di area penyimpanan, serta jadwal pengiriman belum tersusun dengan baik. Tujuan penelitian adalah menentukan pola kedatangan truk yang tiba pada waktu yang sama, menghitung waktu pulling pada keterlambatan pengiriman, dan menentukan alat informasi agar jadwal pengiriman dapat tersampaikan dengan baik. Hasil penelitian yang diharapkan adalah mengatur jam kedatangan truk dengan menggunakan shipping operation diagram agar tidak terjadi keterlambatan pengiriman barang dan tidak ada penumpukan barang jadi di area penyimpanan.
METODE PENENTUAN RUGI-RUGI HISTERESIS PADA PENGATURAN MOTOR INDUKSI BERBASIS VECTOR CONTROL
Authors: Sandhi Novrian Eka , Purwanto Era , Happyanto Dedid Cahya , W.K. Ridwan , Toar Handri
Published: August 2020

Motor induksi tiga fasa memiliki banyak kelebihan dibandingkan dengan motor jenis arus searah. Keunggulan utama dari motor induksi di antaranya torsi yang besar dan kemudahan perawatan. Karena itu motor induksi sangat diandalkan sebagai penggerak utama di bidang industri maupun transportasi. Dalam meningkatkan kinerja operasi motor induksi, telah dikembangkan teknik pengemudian motor induksi yang berbasis vector control. Lewat teknik tersebut motor induksi dapat dioperasikan pada berbagai tingkat kecepatan. Sektor transportasi perkotaan juga mulai menggunakan motor induksi sebagai penggerak kendaraan jenis roda empat maupun roda dua. Dikarenakan kendaraan membawa sumber daya listrik dalam batere atau aki yang kuantitasnya terbatas maka riset vector control dewasa ini diarahkan pada pengingkatan skema pengendalian yang tujuan akhir menambah jarak tempuh dan umur pakai motor induksi. Di antara faktor yang menunjang keperluan tersebut adalah evaluasi rugi-rugi yang terjadi pada operasional motor induksi. Pada operasi kecepatan rendah, rugi histeresis sebagai akibat dari gejala magnetisasi inti stator menempati faktor yang dominan. Riset ini mengajukan suatu desain metode penetuan rugi histeresis pada motor induksi yang dikendalikan dengan teknik vector control lewat prosedur teknis yang sederhana dan aplikatif. Pada unit motor induksi yang digunakan sebagai bahan uji simulasi diperoleh nilai rugi besi PFe berkisar antara 2,55 x 10-8 hingga 1,09 x 103 Watt. Sedangkan nilai rugi histeresis Ph berkisar antara 2,07 x 10-8 hingga 5,15 x 102 Watt. Rasio rugi histeresis Ph terhadap rugi besi PFe antara 47,09 % hingga 81,18 %.
SISTEM PENDINGINAN AIR UNTUK PANEL SURYA DENGAN METODE FUZZY LOGIC
Authors: Loegimin Maruto Swatara , Sumantri Bambang , Nugroho Mochamad Ari Bagus , Hasnira Hasnira , Windarko Novie Ayub
Published: August 2020

Cahaya matahari merupakan salah satu bentuk energi dari sumber daya alam. Sumber daya alam matahari ini sudah banyak digunakan untuk memasok daya listrik di satelit komunikasi melalui sel surya. Sel surya ini dapat menghasilkan energi listrik dalam jumlah yang tidak terbatas langsung diambil dari matahari. Panel surya sendiri memiliki suhu maksimum body yang mana berpengaruh pada keluaran panel surya. Panel sel surya mengalami penurunan kemampuan dalam menghasilkan listrik bila terlalu panas atau melawati batas efektifitas.Oleh sebab itu, maka dikembangkan sistem cooling tower dengan metode fuzzy Logic melalui penelitian ini dengan tujuan untuk memaksimalkan efisiensi panel solar cell dalam menghasilkan listrik dan menganalisis sistem Panel Surya (Photovoltaic). Data yang dianalisis adalah: 1) Metode pendinginan panel surya menggunakan sistem cooling tower dengan metode fuzzy logic, 2) Efisiensi Panel Sel Surya dalam menghasilkan listrik , 3) Daya listrik yang dihasilkan oleh Panel sel surya.

Hasil dari penelitian ini menjelaskan bahwa penggunaan fuzzy logic dapat mengatur kecepatan air untuk pendinginan pada panel sehingga dapat dikatakan bahwa sistem pendingin untuk panel surya cocok digunakan di daerah tropis, karena sinar matahari sangat berlimpah dan terlebih lagi di area jalur khatulistiwa.
MODIFIKASI MESIN TRIM FORM PADA PROSES PENGEMASAN INTEGRATED CIRCUIT UNTUK PENURUNAN DAMAGED LEAD
Authors: Asaad Nur Sakinah , Purwanto Purwanto
Published: August 2020

Proses pengemasan Integrated Circuit (IC) pada kemasan Low Profile Quad Flat Package (LQFP) membutuhkan mesin trim form untuk pemotongan dambar dan pembentukan kaki IC sebelum dipisahkan dari lead frame. Salah satu urutan proses pada mesin trim form adalah offload yaitu penempatan IC ke dalam tray dengan modul pick and place termasuk didalamnya turn table dengan pergerakan buka tutup untuk menyesuaikan jarak antar kolom dari leadframe sebelum dipindahkan ke tray. Pergerakan buka tutup dari turn table ini berpengaruh terhadap cacat produksi damaged lead. Modifikasi ditujukan untuk deteksi dini misalignment sehingga mesin dapat berhenti otomatis dan mengurangi cacat produksi melalui penambahan dua sensor proximity pada turn table. Hasil penelitian menunjukkan penurunan error pada turn table sebesar 88% dan assembly yield mencapai 99.985% atau terjadi peningkatan sebesar 0.07%.
A nova reforma do Ensino Médio amparada pela lei 13.415 e suas ameaças para a disciplina de educação física
Authors: Rocha Bruna Beatriz da , Farias Marcio Norberto
Published: August 2020

Este estudo parte da preocupação com o debate sobre as mudanças propostas na reforma do Ensino Médio e seus possíveis impactos sobre a Educação Física. Nesse sentido, o recorte a ser realizado no trabalho busca esboçar uma interpretação sobre a lei 13.415 que se volta para o Ensino Médio em um processo que afeta a formação humana em meio às políticas educacionais e as propostas pedagógicas existentes. Pretende-se construir uma reflexão teórica para verificar a literatura produzida sobre o tema, especialmente aquelas obras que servem de subsídio para as proposta pedagógicas disponíveis dentro da Educação Física voltadas para o Ensino Médio. Com isso, espera-se obter respostas suficientes que contribuam para o esclarecimento do impacto da Nova Reforma do Ensino Médio em face de um contexto que tende a flexibilizar a educação o que se relaciona diretamente com a conjuntura capitalista do século XXI.
A pedagogia dos multiletramentos e a multiplicidade semiótica no texto infantil
Authors: Avelar Silva Natany , Ferreira Helena Maria
Published: August 2020

O presente artigo visa a discutir sobre possibilidades de uso de múltiplas semioses em retextualizações feitas por crianças em fase de alfabetização. Para tanto, o artigo traz estudos sobre o papel do professor alfabetizador no processo de produção de textos infantis e sobre os multiletramentos. O texto, que resulta de uma dissertação de mestrado, evidencia a abordagem dos textos infantis em uma perspectiva discursiva, que considera aspectos do processo dialógico do processo de alfabetização para além do estudo do sistema alfabético. Revela-se, com este estudo, que os recursos tecnológicos podem favorecer o processo de produção de textos infantis e contemplar  a interação entre sociedade e escola.

Palavras-chave: Produção de texto; Multiletramentos; Formação docente
Autobiografia como instrumento no processo identitário do docente: uma reflexão sobre vivências no Pibid
Authors: Vilela Jenifer Jully
Published: August 2020

Muito tem-se discutido acerca da importância do Programa Institucional de Bolsas de Iniciação à Docência, PIBID para a formação de professores, já que ele pretende promover a iniciação do licenciando no ambiente escolar da rede pública de ensino, além de aproximar o aluno com a prática docente (NÓVOA, 2013; ROMERO, 2017). Pensando nisso, por meio de uma autobiografia, abordo como o programa auxiliou em minha formação e as experiências que possibilitaram a construção e reflexão de minha identidade docente, enfatizando o meu desenvolvimento durante o período de licenciatura, uma vez que a prática docente está em consonância com a formação da identidade do indivíduo (HALL, 2006; BARCELOS, 2016). Nesse viés, Zabalza (2004), Nóvoa (2013), Barcelos (2016), asseveram que o professor se constrói a partir das experiências de acordo com o contexto em que ele se encontra e não somente embasado nos conteúdos propostos em cursos de formação. Inserindo-me nessa vertente de pesquisa, analiso como eu, estudante de Letras, avalio minha participação no PIBID, minhas contribuições participando no programa e dificuldades durante o trabalho. Além disso, analiso, por meio da Linguística Sistêmico Funcional (White e Martin, 2005) como signifiquei minhas experiências e desafios de acordo com o subsistema de atitude. Com a elaboração e análise da autobiografia pude perceber que a reflexão acerca da minha prática docente permitiu que eu ressignificasse minhas ações, transformasse minhas concepções sobre ensino-aprendizagem, percebesse e valorizasse a ajuda do outro, além de evidenciarem quanto o PIBID influenciou na minha identidade docente.
Analisis Efektivitas Penyaluran Zakat pada Rumah Zakat
Authors: Bahri Efri Syamsul , Arif Zainal
Published: August 2020

Rumah Zakat is a philanthropic institution that manages zakat and infaq/alms with an average amount of zakat and infaq/alms collection for 5 (five) years from 2015-2019 amounting to IDR176,298,735,332.80, and the average amount of distribution for 5 (five) years for the period 2015-2019 amounting to IDR152,627,321,395.80. The problem in this research is how is the effectiveness of zakat distribution and charity/alms house? The purpose of this study was to measure the effectiveness of the distribution of zakat and donations/charity at the Rumah Zakat. This research uses a literature study and quantitative method with the Allocation to Collection Ratio (ACR) ratio measurement model based on Zakat Core Principle (ZCP). The object used in this study is the financial statements of the Rumah Zakat for the period of 2010 to 2019. The results of the study show that distribution includes 8 asnaf, namely: fakir, miskin, Amil, Muallaf, Riqob, Ghorimin, Ibnu Sabil, and Fii Sabilillah, in four groups empowerment namely: Healthy Smiles, Champion Smiles, Independent Smiles, and Sustainable Smiles with an Integrated Community Development (ICD) approach that is aligned with the Millennium Development Goals (MDGs). Based on ZCP the effectiveness of distribution for 5 years of operation is 87% or included in the Effective category, where the Alocation to Collection Ratio (ACR) reaches 70-89%. That is, zakat and donation/alms are channeled to mustahik effectively. Suggestion from this research is that Rumah Zakat can increase the effectiveness of zakat distribution with an effectiveness level above 90% so that it is included in the Highly Effective category if ACR ≥ 90 percent)
Effects of bio-fertilizers (Bacillus lentus – Pseudomonas putida) and different rates of Triple Superphosphate fertilizers on some attributes of sugar beet (Beta Vulgaris L.)
Authors: EBRAHIM POUR MOKHTARI Negar
Published: August 2020

The aim of this study was to determine both combined and individual effects of phosphorus bio-fertilizers (Bacillus lentus – Pseudomonas putida). Additionally, the study also monitored the different effects of triple superphosphate fertilizers on agronomic and quantitative characteristics of sugar beet. The factorial experiment approach (RCB design) was used to conduct this experiment. Furthermore, cultivars 7233 and BR1were used as experimental materials to enhance the evaluation of the different fertilizer treatment. An evaluation of the experiments result showed minimal adverse effect, of application of phosphorous fertilizers to phosphorous rich soils. In particular, continued application of phosphorous fertilizer despite its improved values, will results into plant nutritional stress. In conclusion, this experiment results indicated that BR1 cultivar in comparison to 7233 cultivar BR1 had improved qualitative and quantitative characteristics like dry weight, leaf area, high sugar content and better tolerance to increased application of phosphorus fertilizer. Consequently, increased application of phosphorus fertilizers to phosphorus rich soils resulted to decreased yield output. However, biological fertilizer in comparison to its mineral counterpart had reduced impacts on the traits
A Choice Too Far: Transit Difficulty and Early High School Transfer
Authors: Stein Marc L. , Burdick-Will Julia , Grigg Jeffrey
Published: August 2020

The challenge of a long and difficult commute to school each day is likely to wear on students, leading some to change schools. We used administrative data from approximately 3,900 students in the Baltimore City Public School System in 2014–2015 to estimate the relationship between travel time on public transportation and school transfer during the ninth grade. We show that students who have relatively more difficult commutes are more likely to transfer than peers in the same school with less difficult commutes. Moreover, we found that when these students change schools, their newly enrolled school is substantially closer to home, requires fewer vehicle transfers, and is less likely to have been included among their initial set of school choices.
ANALISIS RASIO PROFITABILITAS PADA PT. BANK PEMBANGUNAN DAERAH SUMATERA BARAT CABANG PEMBANTU RSUP DR. M.DJAMIL PADANG
Authors: Marlius Doni , Mutia
Published: August 2020

This study aims to determine the level of bank health through the analysis of profitability ratios at PT. West Sumatra Regional Development Bank Branch Assistant M.UP Djamil Hospital. This research data collection was collected from field research conducted directly to the object of research and library research. While this research data analysis method uses qualitative and quantitative data analysis methods. Based on the results of this study the level of Operational Costs (BOPO) held from 2018-2019 has increased, so that it is efficient in increasing bank operations, being able to control operational costs. Net Profit Margin (NPM) owned is efficient in obtaining profits and has increased from 2018-2019, thereby increasing the company's ability to get profits. Return on Assets (ROA) owned is efficient in getting net profit before tax, although it has decreased slightly in 2019 compared to 2018. Return on Equity (ROE) owned is less efficient in getting net profit after tax and has decreased from 2018 - 2019.
Multi-Step Planning in the Brain
Authors: Miller Kevin , Venditto Sarah Jo
Published: August 2020

Decisions in the natural world are rarely made in isolation. Each action that an organism selects will affect the future situations in which it finds itself, and those situations will in turn affect the future actions that are available. Achieving real-world goals often requires successfully navigating a sequence of many actions. An efficient and flexible way to achieve such goals is to construct an internal model of the environment, and use it to plan behavior multiple steps into the future. This process is known as multi-step planning, and its neural mechanisms are only beginning to be understood. Here, we review recent advances in our understanding of these mechanisms, many of which take advantage of multi-step decision tasks for humans and animals.
“Justice for Native People, Justice for Native Me”: Using Digital Storytelling Methodologies to Change the Master Narrative of Native American Peoples
Authors: Fish Jillian , Counts Payton K.
Published: August 2020

Native American and Indigenous peoples are the original inhabitants of the U.S., including hundreds of tribes with distinct cultures and histories that inform their epistemological (i.e., ways of knowing) and ontological (i.e., ways of being) worldviews. Despite this, Western peoples continue to story the experiences of Native peoples for them, creating master narratives in which Native peoples are relics of the past, and impoverished, uneducated, drunkards in the present (Duran, 2019). Indeed, this is a longstanding effect of the colonial project that continues to erase the authentic, lived experiences of Native peoples, thus, limiting their self-understanding and future possibilities. To counter these enduring colonial narratives, it is critical Native peoples have access to both Native-centered and community-based spaces in which the complexities of Native identities and experiences can be voiced and storied. OrigiNatives sought to provide urban Native peoples in Minnesota a space that privileged their ways of knowing and being through digital storytelling workshops, in which Native peoples (n = 75) from 34 different tribal communities created original and authentic stories of their cultures, histories, and lives using digital media technologies. We review the process of creating and implementing OrigiNatives through partnerships with Native-serving organizations in Minnesota, highlighting implications digital storytelling methodologies have for challenging and resisting coloniality by empowering Native peoples to tell our stories, our way.
High trait self-control and low boredom proneness help COVID-19 homeschoolers
Authors: Martarelli Corinna , Pacozzi Simona , Bieleke Maik , Wolff Wanja
Published: August 2020

In response to the coronavirus disease 2019 (COVID-19) schools around the world have been closed to protect against the spread of coronavirus. In several countries, homeschooling has been introduced to replace classroom schooling. With a focus on individual differences, the present study examined 138 schoolers (age range = 6 to 21 years) regarding their self-control and boredom proneness. The results showed that both traits were important in predicting adherence to homeschooling. Schoolers with higher levels of self-control perceived homeschooling as less difficult, which in turn increased homeschooling adherence. In contrast, schoolers with higher levels of boredom proneness perceived homeschooling as more difficult, which in turn reduced homeschooling adherence. These results partially hold when it comes to studying in the classroom. However, boredom threatened adherence only in the homeschooling context. Our results indicate that boredom proneness is a critical construct to consider when educational systems switch to homeschooling during a pandemic.
Exogenous Melatonin Ameliorates Pontine Histoarchitecture and Associated Oxidative Damage in Sodium Fluoride Induced Toxicity
Authors: Ajoke Sulaimon Fatimo , Ayodeji Okesina Akeem , Leken Imam Abubakar , Yetunde Usman Ruqayyah , Abiodun Ibrahim-Abdulkareem Rukayat , Aminu Imam , Yetunde Adana Misturah , Monsur Shehu , Raheem Abioye Adesola ‘Idowu , Iyabo Ayuba Aishat , Salihu Ajao Moyosore
Published: August 2020

Background: Sodium fluoride (NaF) is a highly consumed food additive, that is capable of disrupting the activities of several brain areas. whether this compound affects the autonomic activities of the brain is unclear.
Objective: Therefore, the study was designed to investigate the ameliorative potentials of exogenous melatonin on sodium fluoride-induced pontine toxicity in adult male Wistar rats, as melatonin has been implicated to have a high concentration in the cerebrospinal fluid of injured brains.
Method: Thirty-two rats were randomly divided into 4 groups (n=8, per group). Groups I, II.III and IV received 0.2 ml of normal saline (NS), 500 ppm of sodium fluoride (NaF) via their drinking water, 10 mg/kg melatonin (MLT), and melatonin with sodium fluoride concurrently (MLT+NaF) respectively for fourteen days. At the end of these treatments, the rats were euthanized and brainstem tissues were excised for histological, histochemical, and biochemical analyses. 
Results: There were shreds of evidence of DNA fragmentation, vacuolation, dispersion of the Nissl bodies, and axonal disruption in the cells of the basilar pons of the sodium fluoride-treated animals; this was coupled with high concentrations of malondialdehyde and low-level concentrations of glutathione reductase. Melatonin, however, was observed to limit neuronal injury in the cells of the basilar pons in the experimental animals by reducing the extent of cells undergoing process pyknosis, chromatolysis, and demyelination. Also, melatonin was able to reduce the concentration of malondialdehyde and increase glutathione reductase activities in the pons.
Conclusion: This study revealed that sodium fluoride injured the pontine histoarchitecture, and induced oxidative damage which were ameliorated by exogenous melatonin treatments.
Wernekink commissure syndrome: clinico-radiological criteria
Authors: S Sheetal , S Amith Kumar , Thomas Reji
Published: August 2020

Introduction: Wernekink commissure syndrome is a rare midbrain syndrome selectively affecting the Wernekink commissure, characterized by bilateral cerebellar ataxia and eye movement disorders, especially internuclear ophthalmoplegia. This article aims at proposing clinico-radiological criteria for Wernekink commissure syndrome with review of the neural circuitary responsible, to aid in recognition and reporting.

Methods: This was a prospective study conducted at Department of Neurology, at Pushpagiri institute of medical sciences and research centre, Thiruvalla, Kerala, India, over a period of 5 years among patient with pure midbrain syndromes. All patients with pure midbrain infarction were studied. Subjects presenting with clinical features of Wernekink commissure syndrome were shortlisted and were assessed by investigators independently. Neuroradiology was assessed by investigators 1 and 2, independently. The demographic profile, risk factors, clinical features, neuroimaging findings and outcomes were analysed using SPSSv21.

Results: Details of 43 subjects with pure midbrain stroke were included in the study. 8 had clinical features of Wernekink commissure syndrome. The most common findings were bilateral ataxia and unilateral or bilateral internuclear ophthalmoplegia. None of our patients had palatal tremor. Unilateral caudal paramedical infarction was seen on MRI in 5 patients, whereas it was bilateral in 3 patients.

Conclusions: The proposed clinico-radiological criteria consisting of all of the essential criteria (Ipsilateral internuclear ophthalmoplegia, Unilateral or bilateral ataxia and Neuroradiological evidence of Caudal midbrain involvement) with or without one among the supportive criteria (Rubral Tremor, Palatal myoclonus) can safely point at a diagnosis of Wernekink commissure syndrome.
Performance Scrutiny of Nepal Electricity Authority using DuPont Analysis
Authors: Risal Nischal
Published: August 2020

The research paper aim to analyze the financial strength and weaknesses of NEA by using DuPont analysis. The descriptive and analytical research designs have been adopted in the research. The quantitative data has been obtained from annual reports of NEA. The study covers eight years period from 2011/12 to 2018/19. The study concludes despite being the sole distributor of the electricity in the country, the financial performance, measured in terms of ROE, of NEA is very poor in first five years (2010/11 – 2015/16) of the study period. The primary source of such poor performance was negative profit margin. Besides, NEA is also exposed to higher financial risk measured in terms of equity multiplier. However, both these measures, ROE and EM have improved in later two years (2016/17 – 2017/18) of the study period.
The COVID-19 Pandemic Impact on Cancer in Latin America
Authors: Restrepo Cesar , Restrepo Cesar
Published: August 2020

COVID-19 pandemic has introduced a shift in accepted and routine handling of elective cases in hospital
administration. This shift introduced a delay in the treatment of all non-COVID-19 cases, including cancer
patients. Usually, non-complicated cases of cancer do not require immediate surgery, but procrastination is
not an option. The pandemic is taking a longer time to be defeated as previously thought, and medical
infrastructure is overwhelmed in many countries. Therefore, procrastination for non-COVID-19 cases
became a reality. To this, we must add that there are specific cancer problems that require urgent resolution.
The problem is having a heavy toll on almost all the involved continents. South and Central America are no
exception. Unfortunately, South and Central America do not have all the resources available to the
developed world, and this makes the issue of timely cancer surgery even more troublesome. A distressed
hospital system needs a systematic approach to deliver cancer care in time. This paper has the intention to
show how a Central American country such as Panama dealt and is dealing with cancer surgery in the middle
of the severe limitations imposed by pandemics.
Image-Guided Percutaneous Biopsy for the Diagnosis of Musculoskeletal Tumors: An Analysis of 698 Cases and a Literature Review
Authors: Ruggieri Pietro , Trovarelli Giulia , Castaneda-Martinez Adriana Ivette , Pala Elisa , Cappellari Alessandro , Angelini Andrea , Berizzi Antonio , Ruggieri Pietro
Published: August 2020

Purpose: Incisional biopsy is still used to obtain material for a straightforward histological diagnosis in
musculoskeletal lesions. The aim of our study was to evaluate 1) the percentage of diagnostic procedures,
2) diagnostic accuracy, and 3) the incidence of complications after imaging-guided percutaneous biopsy
(PCB).
Case Series: This is a retrospective analysis of imaging-guided PCB performed between January 2016 and
September 2019 by fluoroscopy in bone lesions or under ultrasound-guidance in soft tissue lesions.
Specimens were classified as diagnostic or non-diagnostic according to the pathologist’s report; diagnostic
accuracy was determined by comparing histopathological results from biopsy and tumor resection. PCB
was diagnostic in 94% and 97% of cases, with a diagnostic accuracy for detecting tumor disease in soft
tissue and bone lesions of 98% and 100%, respectively. No complications were observed.
Discussion: The PCB is safe, minimally invasive, and cost-effective; thus, it should be the gold standard
for the diagnosis of musculoskeletal lesions.