bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH VARIASI TEMPERATUR PERLAKUAN PANAS AGING TERHADAP SIFAT MEKANIK ALUMINIUM AA 6061
Authors: Sidik Jaelani
Published: November 2019

Aluminium 6061 banyak digunakan dalam industri, baik industri otomotif, peralatan rumah tangga dan konstruksi. Dengan penggunaanya di berbagai bidang dengan karateristik yang berbeda, tentu diperlukan sebuah metode dalam meningkatkan nilai kekuatannya. Penelitian ini bertujuan untuk meningkatkan nilai kekuatan mekanik aluminium 6061. Perlakuan panas aging merupakan sebuah metode yang dapat meningkatkan nilai kekuatan mekanik. Variasi temperatur aging pada penelitian ini yaitu 175, 200 dan 225 dengan waktu tahan selama 1 jam dan didinginkan diudara terbuka. Kemudian dilakukan pengujian yang terdiri dari uji kekerasan, uji tarik dan uji impak. Hasil pengujian menunjukan bahwa perlakuan panas aging mempengaruhi sifat mekanik aluminium. Nilai kekerasan maksimum, kekuatan tarik maksimum dan harga impak tertinggi tercapai pada temperature aging 175°C dengan nilai masing-masing 31.66 HRB, 231.67 Mpa dan 0.0290 Kg.m/mm2. Namun semakin meningkatnya temperature aging, nilai kekerasan, nilai kekuatan tarik cenderung menurun. Penurun nilai sifat mekanik alumunium 6061 dikarenakan kondisi over aging pada suhu 200°C dan 225°C.
EFEK HEAT TREATMENT TERHADAP KEKUATAN IMPACT KOMPOSIT ALAM
Authors: Susanto Joko
Published: November 2019

Pembuatan komposit polyester-serat nanas dengan komposisi berat serat 2,5% dan 0% dengan panjang serat 1 cm dibuat berdasarkan standart ISO 179-1:2010 telah berhasil dilakukan. Hasil specimen sebelum dilakukan pengujian impact, terlebih dahulu dilakukan annealing selama 24 jam. Hasil pengujian kekuatan impact mengalami peningkatan dengan penambahan proses annealing dan penambahan berat serat .
PERFORMANCE DRIVE TRAIN HYBRID SYSTEM IN GOKART VEHICLES
Authors: Saputro Prasetyo Dono
Published: November 2019

Drive train (power transfer) is a mechanism that removes the power generated by the engine to drive the wheels of vehicle. Transmission system is one important component in the drive train, whose main function is to channel out of the engine torque to the drive wheel. Transmission system is divided into 3 kinds: manual gear transmission, transmission hydrodinamik, and continuously variable transmission (cvt). And transmission used in ic engines hybrid go-kart is a CVT. In the design of hybrid drive train system on go-kart vehicles produce an analysis of torque, traction, and speed, are able to produce hybrid vehicles go-kart. And obtained τmax = 144,79 (N.m) , τmin = 1,38(N.m), Ftraksi max = 723,94(N), F traksi min = 6,89 (N) , Pmax = 2312,6 watt , Pmin = 74,6 watt, α max = 6,07 (m/s2) , α min = 0,02 (m/s2), on Yamaha AL115S(5TL3) engine, while in DC motor obtained by τmax = 14,25 (N.m) , τmin = 6,72 (N.m), Ftraksi max = 71,27(N), F traksi min = 33,58 (N) , α max = 1,14 (m/s2) , α min = 0,53 (m/s2).
THE IMPLEMENTATION OF SYSTEM DYNAMICS IN HOSPITAL SERVICES FOR IMPROVING THE INPATIENT ROOMS UTILIZATION
Authors: Supriyanto Heri
Published: November 2019

Hospitals are an important part of the health system. This agency consists of several main services, namely Outpatient, Emergency, and Inpatient services. One type of main service that is quite complex and needs to be considered is service at inpatient installations. Regarding this inpatient service, hospitals must make a structural and functional utilization effort to be further improved by increasing the utilization of service space regarding the number of available beds. To measure the level of utilization of hospital facilities at inpatient services, hospital service indicators are needed to measure it. These indicators include BOR (Bed Ocupanccy Rate), which is the percentage of beds filled, LOS (Length of Stay), namely the average length of stay, TOI (Turn Over Interval), which is the average free time of bed, BTO (Bed Turn Over), namely the productivity of the bed. These indicators will be presented in graphical form, namely Barber Johnson Graph. From the values ​​produced by the hospital management, later it can be used as material for planning and decision-making in determining service facility policies in the future. The purpose of this study is to make modeling with a system dynamics so that the value of the indicator can have ideal parameter values. The result of this study is that a scenario is needed to increase the number of patient visits, because patient visits are too low. This is evidenced by the value of the BOR which is less than the ideal value. In addition, the duration of patient care, day of care was influenced by the variable number of patient visits. The results of the scenario show that in 2019 to 2030 the values ​​of BOR, LOS, TOI, and BTO were produced according to the ideal indicator value.

Keywords: Inpatients, Room Utilization, Service Indicators, System Dynamics.
THE IMPLEMENTATION OF HEART RATE SENSOR AND MOTION SENSORS BASED ON INTERNET OF THINGS FOR ATLETE PERFORMANCE MONITORING
Authors: Hidayat Muhammad Aksa , Sukaridhoto Sritrusta , Basuki Achmad , Al Rasyid Udin Harun , Aryanti Ika Fadhila , Prasetyo Agus
Published: November 2019

Indonesian achievements in the ASEAN Games continued to decline in achievement starting in 1962 with the acquisition of 51 medals and up to 2014 with the acquisition of 20 medals. The decline in achievement was due to the lack of athletic resources due to the absence of media that could record athletes' abilities in the field. Can record the athlete's performance before running, running and after running using the Heart Rate sensor and Motion Capture sensor. The results of the sensor recording will be stored in the database. This system applies the Internet of Things (IoT) concept, using raspberry pi, Arduino microcontroller, T34 polar heart rate sensor to capture and send heartbeat to receivers, gyro-based motion-capture sensors that named wear notch where this sensor serves to capture the movement of athletes, sensors communicate with the system using 4G connectivity, use MQTT as edge computing which acts as a communication medium from sensors to databases, Maria DB and influx DB as accumulation which plays a role in storing heart rate and athlete's movements that have been recorded by sensors, athlete performance monitoring platform with a heart rate sensor and athlete's motion capture is a web-based application that collaborates all processes from the sensor to the system. Sensor heart rate recording results are categorized good because the error margin is only 0.4%. Wearnotch sensor data can be stored in the database, and athletic data can be recorded before sports, while sports, and after sports in real-time
Evaluación de la calidad de agua para riego y aprovechamiento del recurso hídrico de la quebrada Togllahuayco
Authors: Quinteros Carabalí Joffre Alejandro , Gómez-García Javier , Solano Michelle , Llumiquinga Gabriela , Burgos Christian , Carrera-Villacrés David
Published: November 2019

El agua utilizada para riego con fines agrícolas tiene efectos importantes sobre la producción de cultivos, así como también sobre el deterioro químico del suelo. En este estudio se evalúa la cantidad y calidad de agua disponible para el riego de un cultivo sustentable de quinua en la quebrada Togllahuayco, parroquia Guangopolo, Ecuador. Esta quebrada dispone de un volumen de 23.347,95 m3 anuales de agua y solo requiere de 6.747,5 m3 anuales para el cultivo de quinua. Se tomaron muestras de agua y se midió la concentración de sodio, potasio, calcio, magnesio, carbonatos, bicarbonatos, sulfatos y cloruros y la conductividad eléctrica. Se calculó el índice de relación de adsorción de sodio (RAS). Se aplicó el método de Pearson entre las variables RAS y la conductividad eléctrica encontrándose una correlación. El RAS fue de 3,94 meq/L y la conductividad eléctrica (CE) de 324 uS/cm. El agua se encuentra en la clasificación C2S1 después de la aplicación del método de Richards; presenta un valor bajo de peligrosidad salina y un valor medio de peligrosidad sódica, considerándose apta para el riego. Los resultados de esta investigación son la base para el desarrollo de un plan de gestión sostenible de los recursos hídricos y manejo adecuado del suelo en la quebrada Togllahuayco. Además, se debe implementar un enfoque que permita la recuperación ecológica de la quebrada evitando la erosión y desgaste del suelo.
Veri Ambarı Projelerinde ETL Performansını Etkileyen Faktörlerin Belirlenmesi
Authors: ÇELEBİ Hazal , ÇAKMAK Ahmet Ferda
Published: November 2019

Bilgi, özel
bir amaca ulaşmak için verinin çeşitli analiz, dönüşüm ve gruplama
işlemlerinden geçirilerek, daha sonra kullanılmak üzere yöneticiler için hazır
ve faydalı bir hale getirilmiş şeklidir. Veri ambarı, farklı kaynaklarda
tanımlanmış verilerin, belirli aralıklarla aktarılarak standart bir format ile
tek bir ortamda tutulduğu ortamdır. Veri ambarının güncel olması oldukça
önemlidir. Veri ambarının güncelliği ise ETL süreci ile sağlanmaktadır.
ETL;  Çıkar(Extract), Dönüştür(Transform)
ve Yükle(Load) kelimelerinin baş harflerinden oluşmaktadır. Kullanılacak
verinin dış kaynaklardan çıkarılması, verinin iş süreçlerine göre
birleştirilmesi, dönüştürülmesi ve veri ambarına yüklenmesi sürecidir. Bu
sürecin başlangıç faaliyetlerinden biri en uygun ETL yazılımının seçimidir. Bu çalışmada
Veriambarı oluşturulmasında ETL yazılım aracı seçimini etkileyen ISO 25010
standardında yer alan faktörlerin ağırlıklandırılması ve yazılım araçları
arasında AHP yöntemi ile karar verilmesi amaçlanmaktadır.
Video Ders Uygulaması Sınıf Ortamında Dönüt-Düzeltmeye Zaman Ayırmak İçin Etkili Bir Yol Olabilir mi?
Authors: ÇALIŞKAN Muhittin , SERÇE Hüseyin , AYDOĞMUŞ Mevlüt
Published: November 2019

Bu eylem araştırmasında “Derslerimizde öğrenciden öğretmene,
öğretmenden öğrenciye bilgi akışını sağlayabilmek ve gerekli ise düzeltme
yapabilmek için nasıl zaman ayırabiliriz?” sorusuna cevap arandı. Dönüt ve
düzeltmeye zaman ayırmak için video ders uygulaması gerçekleştirildi. Bu
uygulamada neler olduğu rapor edilmeye çalışıldı. Araştırma özel öğretim
yöntemleri dersinde bu dersi alan öğrencilerle birlikte gerçekleştirildi. Uygulama
sekiz hafta sürdü. Sınıfta üç alandan (muhasebe ve finansman, adalet,
kuyumculuk teknolojisi) öğrenciler vardı. Her grup kendi alanından bir dersin
konusunu seçip video hazırladı. Her bir grubun videosunu dersten önce diğer iki
grup izledi. Derste, video hazırlayan grup, video izleyen gruplara konu ile
ilgili sorular sordu, cevaplara göre dönüt verdi, gerektiğinde düzeltmeler
yaptı. Sürecin etkililiği hakkında öğrencilerin görüşleri yazılı olarak alındı.
Ayrıca dersin sorumlu öğretim elemanı araştırma günlüğü tuttu. Veriler
tümevarım analizi ile analiz edildi. Araştırma sonunda, ön öğrenmelerin tam
olması şartıyla, hazır ve kısa videoların yaşantı zenginliği sağlaması
açısından dönem içerisinde bir ya da iki kez kullanılabileceği sonucuna
ulaşıldı.
Aplikasi Pengukuran Tahanan Pentanahan Untuk Pengamanan Tegangan Sentuh Dan Pelatihan Teknik Instalasi Listrik Bagi Masyarakat Desa Semparu Kecamatan Kopang Kabupaten Lombok Tengah
Authors: Muljono Agung Budi , Nrartha I Made Ari , Sultan Sultan , Ginarsa I Made , Sasongko Sudi Mariyanto Al
Published: November 2019

Electrical energy is one of the vital needs that cannot be separated from the needs of everyday life. In energy use, a protection in the electrical installation system is needed for safety related to electricity, among others, to avoid the danger of touch voltage. Protection intended in this electricity system is to provide a protection system to realize reliable and safe conditions, both for workers and the general public, in accordance with General Standard of Electrical Instalation PUIL 2011 and the Electricity Law of 2002. Activities are carried out in Semparu Village, Kopang District, Central Lombok Regency, through counseling, training and direct measurement of detainee detention. With the aim of providing installation techniques according to standards and grounding systems for security of installation of touch stresses that are harmful to human safety. Based on the results of the evaluation, the mean pretest score of 39.375 was 65.3 in the posttest mean or there was an increase in basic understanding and further participants by 72%. The results of the grounding resistance test at the village office in Semparu with the earth tester obtained a mean yield of 4.2 Ω with a post depth of 1.5 m with the wet soil type of the former rice field already in accordance with the PUIL 2011 standard which is smaller than 5 Ω
Sosialisasi Pemupukan Berimbang Spesifik Lokasi Untuk Tanaman Jagung Di Kabupaten Dompu
Authors: Susilowati Lolita Endang , Kusumo Bambang Hari
Published: November 2019

Farmers' understanding of how to fertilize efficiently and effectively is not yet fully mastered. Most farmers often fertilize crops beyond the recommended dosage. This community service aims to (1) increase farmers' understanding and knowledge of the quality of fertilizers and balanced fertilization technology to achieve the use of fertilizers that are relatively efficient, (2) disseminating balanced fertilization technology with the correct rules. This activity was started with an explanation of fertilizer and balanced fertilization technology, then continued with a balanced fertilization demonstration in Mumbu Village, Woja Subdistrict Dompu District in the planting season of MK 1 in 2018. As the target partner was the Bina Baru Farmer group, Mumbu Village, Woja Subdistrict, Dompu District and as a working partner is a local agricultural extension agent (PPL). The community service team acts as a facilitator, while the local PPL is tasked with assisting the farmers' demonstration activities. This community service activity uses a participatory approach starting from the beginning to the end of the activity in making decisions. The results of community service activities show as follows (1) there is an increase in farmers' understanding of the quality of fertilizers and determination of fertilizer application based on fertilizer quality in applying the site-specific balanced fertilization concept and (2) mastering the application of balanced fertilizer application technology with the 5 T. rule. The application of proven balanced fertilization technology can increase yields from 9 tons per ha (how to fertilize farmers) to 12 tons per ha
Nilai Tambah VCO Pada Unit Bisnis Agroindustri “Andana” di Kabupaten Lombok Utara
Authors: Tajidan Tajidan , Halil Halil , Efendy Efendy , Fernandez FX Edy
Published: November 2019

Community service aims to improve understanding and application of financial management in the "Andana" VCO agroindustry business unit, and measuring the performance of its financing. Community service is carried out using the literasi, tutorial and assistance method. Tutorial participants' understanding of financial management is measured from the results of the pre test and post test, while the application of financial management is assessed by financial inclusion, and financing performance is measured using a value added analysis tool. The results of community service activities show that financial management understanding has increased from 77,69 to 81,72 (from good to superior). The application of financial management leads to the application of financial inclusion, while the achievement of value added was IDR 83,200 / liter in June 2019 and IDR 95,681 / liter in July 2019
Pendampingan Usaha Beternak dan Pengolahan Daging Ayam Pada Kelompok Peternak Unggas Di Desa Truwai Kecamatan Pujut Kabupaten Lombok Tengah
Authors: Syamsuhaidi Syamsuhaidi , Permatasari Dwi Kusuma , Rozi Tapaul , Sukirno Sukirno , Firmansyah Firmansyah
Published: November 2019

Truwai village, Pujut subdistrict, Central Lombok, is a village that has been designated by government of West Nusa Tenggara provincy as Poultry Village in December 2014.  Truwai village has a strategic geographical position because it is close to the superior tourism area of Kuta and the Mandalika Special Economic Zone (KEK Mandalika).  Based on the potential of the Truwai village, the Truwai village government has a program to increase the efforts to raise domestic poultry and promote the processing of domestic poultry to produce a superior commodity from Truwai that can be used as a souvenir for tourists.  The assistance activities for poultry farming and chicken meat processing training in the Truwai village community aim to increase knowledge and skills in developing the business.  The assistance and training activities were carried out for 5 days in the form of discussions and training in making shredded meat, Truwai grilled chicken, chicken satay and sausage and nuggets.  The result of the activity showed the high enthusiasm of the community in following and processing chicken meat from the beginning to the packaging.  The community expects this assistance activities to continue to be skilled and able to market their products independently
Pengembangan Hortikultura Lahan Kering Berbasis Pertanian Organik Dengan Perbaikan Teknologi Budidaya Di Desa Kayangan Lombok Utara
Authors: Jayaputra Jayaputra , Parwata IGM Arya , Santoso Bambang Budi , Jaya Komang Damar
Published: November 2019

One important issue of agricultural development in the dry land area of North Lombok Regency is how to increase the Planting Index (IP) supported by the availability of sufficient water, especially for the development of horticultural commodities. The increase in the Planting Index is expected to lead to an increase in community welfare, specifically an increase in farmers' incomes. The development of horticulture is intended to provide added value to farmers' income by applying environmentally friendly Good Agricultural Practices with production management in accordance with the conditions of natural resources. One area of dry land that has sufficient potential for horticultural development in North Lombok Regency is Kayangan Village. Problems faced by dry land farmers include the level of knowledge and skills of farmers, especially in the management of horticultural commodities and the relatively low level of farmer participation. To overcome these problems, innovation technology transfer is needed through the development of environmentally friendly horticultural crops by regulating cropping systems and improving cultivation technology to increase farmers' incomes. Counseling and training, as well as demonstration plots for improved cultivation technology and regulation of horticultural cropping patterns were carried out during May-November 2019. Community service activities were considered quite successful in terms of the enthusiasm and perseverance of participants in participating in counseling and training, as well as demonstration plots (tomato plants, chili peppers, melons, intercropped tomatoes and pachoi). The results of the demonstration plot showed a significant increase both in crop productivity and increased income per unit area of arable land. On going assistance from all parties, especially the local government, is expected to sustainably develop horticultural commodities in order to increase the income of dry land farmers
A Simple Procedure for Extraction of Surface Protein of Salmonella Serotypes and Escherichia coli Strains Isolated from Poultry and Pigs
Authors: Quynh Lan Tran Thi , Da Linh Doan Thi , Truc Phuong Le Ho
Published: November 2019

Salmonella and E.coli possess different surface protein structures that can induce protective immune responses. Identification of these proteins capacitates development of diverse applications in prevention and diagnosis that contribute to effectively control disease-causing enterobacteria pathogens such as Salmonella and E.coli. A simple procedure for obtaining protein complexes of Salmonella serotypes and E.coli is performed in this study. A sonication process with heat treatment of whole bacteria induced the release of protein complexes. Concentration of the protein extract was quantified using protein quantification Kits-Rapid, and protein complex profile was obtained by SDS-PAGE (Sodium dodecyl sulfate polyacrylamide gel electrophoresis) and silver staining. The concentrations of protein ranged from 29.45 to 45.35 µg/mL in the  Salmonella protein extracts, and from 25.35 to 36.72 µg/mL in the E.coli protein extracts. Six major groups of proteins from E. coli (YfiO, NipB, OmpF, YfgL, Talc, YaeT) and four major groups of proteins from Salmonella (Flagellin, OmpA, Porin, SEF21) were preliminarily determined by a simple procedure of extraction based on the molecular weight.
Features of application of the methane-hydrogen fraction as fuel for thermal power plant boiler
Authors: Taymarov M. A. , Ilyin V. K. , Chiklyaev E. G. , Sungatullin R. G.
Published: November 2019

The methane-hydrogen fraction is a gaseous hydrocarbon by-product during oil processing for obtaining petroleum products. Until recently, the methane-hydrogen fraction was used as furnace oil in internal technological processes at a refinery. Some of the low-calorie methane-hydrogen fraction was burned in flares. Driven by the prospect of the methane-hydrogen fraction use as a fuel alternative to natural gas for burning in thermal power plants boilers, it became necessary to study the methane-hydrogen fraction combustion processes in large volumes. The conversion of ON-1000/1 and ON-1000/2 furnaces from the combustion of the methane- hydrogen fraction with combustion heat of 25.45 MJ/m3 to the combustion of the composition with combustion heat of 18.8 MJ/m3 leads to a decrease in temperature in the flame core for 100 °C as an average. The intensity of flame radiation on the radiant tubes decreases. Therefore, the operation of furnaces during combustion of methane-hydrogen fraction with a low heat of combustion at the gas oil hydro-treating unit is carried out only with a fresh catalyst, which allows lower flame temperatures in the burner.

The experiments to determine the concentration of nitrogen oxides NOx and the burning rate w of the methane-hydrogen fraction in the ON-1000/1 furnace and natural gas in the TGM-84A boiler, depending upon the heat of combustion Qnr were carried out. The obtained results showed that the increase in the hydrogen content Н2 from 10.05 % to 18.36% (by mass) results in an increase in the burning rate w by 45%. The burning rate of natural gas with methane CH4 content of 98.89% in the TGM-84A boiler is 0.84 m/s, i.e. it is 2.5 times lower than the burning rate of the methane- hydrogen fraction with H2 content of 10.05%. The distributions of heat flux from the flame qf over the burner height h in the TGM-84A boiler were obtained in case of natural gas burning and calculation of burning of the methane-hydrogen fraction with a hydrogen content of 10.05% and methane of 28.27%. The comparison of the obtained data shows that burning of methane- hydrogen fraction causes an increase in the incident heat flux qf at the outlet of the burner.
Method for control of the start-up regulating devicefor power transformers of the power supply system
Authors: Klimash V. S. , Tabarov B. D.
Published: November 2019

Three-phase thyristor switches are designed for pulsed formation of inrush currents of electrical equipment with their subsequent shunting in steady state operation. In transformer substations, they perform a bumpless turning on of a power transformer by connecting its primary winding first to two phases of the network at the moment of zero crossing by the phase voltage of the network third phase, and then to the network third phase at the moment of zero crossing by the line voltage of the other two network phases. In this case, the starting currents of the transformer almost immediately enter the steady state without the appearance of constant components in the magnetization currents and voltage drop. To expand the functionality of thyristor switches, it is proposed, in addition to bumpless turning on of a power transformer, to disconnect it without arcing between the contacts of electrical equipment, as well as to carry out continuous voltage regulation for consumers when voltage in the network changes. The proposed method and structure for its implementation on the basis of two three-phase thyristor reactor keys and a capacitor bank make it possible while changing the network voltage to stabilize the generated reactive power at the input of the substation without creating the current distortions in the power transformer and power transmission simultaneously with stabilizing the substation output voltage. Modeling and research of the start-regulating device as part of a transformer substation was carried out in the MatLab environment. The results of numerical experiments in stationary and dynamic modes of the substation operation showed the feasibility of using the developed technical solutions for the industrial power supply system.
Application of x-ray fluorescence spectrometry in assesment of ultrafiltration membrane surface condition at water pre- treatment units of thermal power plants
Authors: Veselovskaya E. V. , Voloshina E. N. , Lysenko S. E.
Published: November 2019

The objects of the study were the Doy Chemical hollow-fiber ultrafiltration membranes which were use for preparation of make-up water for the Novocherkasskaya Regional Thermal Power Plant (RTPP).

We tried out a possibility of applying the X-ray fluorescence spectrometry to study the condition of the spent non-recoverable ultrafiltration membranes in order to identify the causes of their irreversible destruction. The ARL Quant’X X-ray fluorescence energy dispersive spectrometer of Thermo Scientific (USA) was used in the study.

Thin cuts of the Doy Chemical hollow-fiber ultrafiltration membranes were used in the experiments, which had worked for more than three years in the field conditions of the feed water of the Don River, Russia.

The analysis of the obtained samples spectra allowed us to assume that the membranes were irreversibly contaminated by iron bacteria. Basing on the conclusions made during the analysis of X-ray fluorescence spectra we developed and tested in field conditions one of the optimization variants for technological pretreatment scheme. This scheme enables a significant increase in the service life of ultrafiltration membranes, even when the feed water is heavily contaminated by bacteria. Field tests of the modernized technology were carried out at Novocherkasskaya RTPP during 2016-2018 and showed a significant increase in the service life of the membrane modules. At the same time, the quality of the filtrate, productivity and pressure drops at the cascades of ultrafiltration units fully corresponded to the normative values even in conditions of deteriorated quality of the feed river water.

It has been proved that aggressive regeneration of ultrafiltration membranes that have worked for a long time under the conditions of feed water having increased values of the total microbial number and high values of permanganate oxidation does not allow one to restore their initial state. In this case the main cause of ultrafiltration membranes contamination is iron, which is present in colloidal and bacterial forms in the pores and on the membranes surfaces. In the conditions of the Novocherkasskaya RTPP, in addition to timely flushing and chemical regeneration of ultrafiltration membranes, the necessity of organizing a preliminary treatment of the feed water with reagents having a prolonged bactericidal effect is accepted.
Pengaruh Pemberian Jentik Nyamuk (Culex sp) Dan Cacing Sutera (Tubifex sp) Terhadap Pertumbuhan Ikan Cupang (Betta splendens)
Authors: Tarigan M. Rafii Ma'arif , Munir Masnadi
Published: November 2019

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian jentik nyamuk (Culex sp) dan cacing sutera (Tubifex sp) terhadap pertumbuhan ikan cupang (Betta splendens) dan melihat pertumbuhan ikan cupang dari parameter berat tubuh ikan dan panjang tubuh ikan. Metode yang digunakan adalah metode eksperimental dengan Rancangan Acak Kelompok Non Faktorial dengan taraf perlakuan pemberian cacing sutera 10 ekor, pemberian cacing sutera 12 ekor, pemberian jentik nyamuk 10 ekor dan pemberian jentik nyamuk 12 ekor. Jumlah ulangan 6, jumlah perlakuan 4, jumlah akuarium 24 buah, jumlah ikan keseluruhan 24 ekor. Paramater yang diamati adalah berat tubuh ikan dan panjang tubuh ikan cupang (Betta splendens). Data yang diperoleh dianalisis dengan analisis sidik ragam. Hasil Penelitian dari parameter pertumbuhan yang dihitung berupa pertambahan berat, dan pertambahan panjang yaitu pertambahan berat ikan cupang (Betta splendens) dari pemberian cacing sutera 10 ekor sebesar1,75 gr, dan panjang tubuh sebesar 3,05 cm, pemberian cacing sutera 12 ekor sebesar 2,55 gr dan panjang tubuh 3,25 cm, pemberian jentik nyamuk 10 ekor sebesar 3,44 gr dan panjang tubuh 4,31 cm, pemberian jentik nyamuk 12 ekor sebesar 4,85 gr dan panjang tubuh 6,12 cm. Perlakuan yang menggunakan pakan jentik nyamuk menghasilkan pertumbuhan paling tinggi dibandingkan perlakuan pemberian cacing sutera. Ini dikarenakan kandungan nutrisi yang terdapat pada jentik nyamuk lebih tinggi dibandingkan nutrisi pada cacing sutera.
Pengaruh Media Video Pembelajaran Terhadap Hasil Belajar Siswa Pada Sub Materi Spermatophyta di SMA Swasta Nurul Amaliyah Tanjung Morawa Tahun Pembelajaran 2015/2016
Authors: Tasmalina Tasmalina , Prabowo Pandu
Published: November 2019

Penelitian ini bertujuan untuk mengetahui pengaruh Media Video Pembelajaran terhadap hasil belajar siswa pada sub materi Spermatophyta di SMA Swasta Nurul Amaliyah Tanjung Morawa Tahun Pembelajaran 2015/2016. Sampel penelitian ini adalah seluruh siswa kelas X yang terdiri dari 2 kelas dengan jumlah siswa 82 orang yang dipilih satu kelas secara random sampling dan kelas yang terpilih adalah kelas X2 sebanyak 41 siswa. Sampel diberikan pengajaran menggunakan Media Video Pembelajaran dan Metode Quasi eksperimen atau yang disebut juga desain eksprimen semu. Hasil Penelitian menunjukkan bahwa Media Video Pembelajaran dapat meningkatkan hasil belajar siswa. Hal ini ditandai pada saat dilakukan pre-test, 88% siswa dinyatakan tidak tuntas. Dengan nilai tertinggi 80 sebanyak 5 orang siswa dan nilai terendah 50 sebanyak 5 orang siswa, dengan nilai rata-rata 66,51 dan standart deviasi 9,53. Setelah diberi pengajaran menggunakan Media Video Pembelajaran pada sub materi Spermatophyta (pada post-test) siswa yang mendapat nilai tertinggi 97 sebanyak 2 orang siswa dan nilai terendah 65  sebanyak 2 orang siswa. Maka siswa yang tuntas sebanyak 32 siswa (78%) dan 9 siswa (22%) tidak tuntas dengan nilai rata-rata 85,53 dan standart deviasi 8,38.Berdasarkan uji hipotesis didapat nilai thitung = 49,62 sedangkan nilai ttabel = 1,69 sehingga 49,62 > 1,69, dengan demikian Ha diterima dan H0 ditolak, dan dapat disimpulkan bahwa ada pengaruh yang signifikan penggunaan Media Video Pembelajaran terhadap hasil belajar siswa pada sub materi Spermatophyta di SMA Swasta Nurul Amaliyah Tanjung Morawa Tahun Pembelajaran 2015/2016.
Hubungan Gaya Kepemimpinan Tutor Dengan Efektifitas Tutorial Berdasarkan Persepsi Mahasiswa/I Fakultas Kedokteran Universitas Batam Tahun 2016
Authors: Batubara Saiful
Published: November 2019

Tutorial as the necessary main section for medical study process with KBK. The effective tutorial will bring the student to a certain learning condition with high order thinking in a condusive academic climate. To reach the effectiveness of tutorial, some supporting factors is needed such as, trustworthy between the member of the group, scenario or trigger, student participation and interaction, facilities available, also the tutor role. On PBL the tutor role as the facilitator is to ensure the group discussion’s proceed effectively, progressively as well as structurally. Commonly every tutor has it own leadership while proceeding discussion progress that will take effect to student effectiveness on giving opinion. This research is to show the relevance between tutor leadership and tutorial effectivity on student of medical faculty UNIBA academic year 2016. The method for this research is by using observational analytic with cross sectional approach on University Batam Medical Faculy with total sample 184 students and the sampling technique is by simple random sampling. The data analysis is by using Chi-square test. Based on Universitas Batam Medical Faculty student perception, that democratic leadership have a tutorial effectivity by 162 student (88%), authoritarian leadership have a tutorial effectivity by 8 student (4,3%) and freedom leadership have a tutorial effectivity by 11 student (6%). Statistic chi-square test result, show p-value by 0,001 (p < 0,05). Based on the research result, it concluded that there is a relevance between tutor leadership and tutorial effectivity based on Universitas Batam Medical Faculty student perception’s
Upaya Meningkatkan Hasil Belajar Siswa Dengan Menerapkan Pendekatan Kontekstual Dalam Pembelajaran IPA Pada Materi Pokok Bioteknologi di Kelas XI-1 SMP Negeri 5 Stabat TP.2016/2017
Authors: Rusli Rusli
Published: November 2019

Drs. Rusli, M.Pd., NIP. 196809302000121001, Master of SMP Negeri 5 Stabat, "Efforts to Improve Student Learning by Implementing Contextual Approach in Science Learning on Basic Matter of Biotechnology in Class IX-1 SMP Negeri 5 Stabat T.P. 2016/2017 ". Problem formulation: Is the application of contextual learning can improve student learning outcomes on science learning biotechnology main subject in class IX-1 SMP Negeri 5 Stabat T.P. 2016/2017. The purpose of this research is to know the improvement of student learning outcomes through the application of contextual approach on science learning biotechnology main subject in class IX-1 SMP Negeri 5 Stabat T.P. 2016/2017. The research procedure is carried out through two cycles with four stages: 1) planning; 2) action; 3) observation; 4) reflection; The unresolved problem is reflected as the teaching improvement material of the next cycle. The results of the classroom action research show the students' learning outcomes by applying contextual approaches have increased. This is seen in the average grade 74 (incomplete category) in the first cycle to 83 (complete category) in cycle II and the percentage of learning completeness classically increased from 53% in the first cycle to 87.5% in cycle II
Hubungan Reklame Rokok Dengan Perilaku Merokok Pelajar SMA Negeri 4 di Kota Pematangsiantar Tahun 2017
Authors: Daulay Maswan , Harahap Juliandi , Lubis Basyariah , Batubara Saiful
Published: November 2019

Merokok merupakan masalah yang belum bisa terselesaikan hingga saat ini. Merokok sudah melanda berbagai kalangan, baik anak-anak sampai orang tua, laki-laki maupun perempuan, terlebih pada pelajar-siswi SMU. Dari data World Health Organization (WHO) pada tahun 2014 menyebutkan bahwa merokok dapat membunuh hingga setengah dari pengkonsumsi rokok. Berdasarkan hasil Riskesdas tahun 2013, rata-rata perilaku merokok di Indonesia saat ini sebesar 29,3%. Proporsi perokok terbanyak terdapat di Kepulauan Riau dengan jumlah perokok setiap hari 27,2%. Proporsi merokok penduduk umur 15 tahun ke atas cenderung meningkat, dari tahun 2007 sebesar 34,2% meningkat menjadi 36,3% di tahun 2013 sedangkan untuk Jawa Tengah proporsi perokok usia di atas 10 tahun yang merokok setiap hari sebesar 22,9% dan perokok kadang-kadang sebesar 5,3% dengan jumlah batang yang dihisap dalam sehari pada saat ini sebesar 10,7% (Riskesdas, 2013). Munculnya budaya merokok dikalangan remaja diakibatkan oleh pergaulan dan terutama gencarnya iklan rokok yang mendorong remaja untuk merokok. Menurut Nurmayunita, dkk (2015) dalam penelitiannya yang berjudul hubungan antara pengetahuan, paparan media iklan dan persepsi dengan tingkat perilaku merokok pelajar SMK Kasatrian Solo Kartasura Sukoharjo dijelaskan bahwa pelajar yang jarang melihat iklan rokok justru lebih banyak memiliki tingkat perilaku merokok sedang sebesar 71,4% dibandingkan responden yang sering melihat iklan rokok malah lebih banyak pada tingkat perilaku merokok ringan sebesar 61,8%. Pada tahun 2014 Pemerintah Kota (Pemko) dan DPRD Medan sepakat dan resmi memberlakukan Peraturan Daerah (Perda) Kota Medan Nomor 3 Tahun 2014 tentang Kawasan Tanpa Rokok. Namun kenyataannya pengawasan dan pemberlakuan saksi di dalam perda ini masih sangat minim. Di Kota Pematansiantar tidak ditemukan data mengenai jumlah pasti perokok terutama dikalangan remaja, bahkan peraturan daerah terkait dengan pemasangan reklame rokok tidak tertulis karena reklame rokok yang dipajang di beberapa tempat khususnya di jalan utama atau protokol yang ada di Kota Pematangsiatar adalah salah satu pemasukan daerah, semakin banyak reklame rokok yang dipajang maka semakin banyak pemasukan daerah tersebut. SMA Negeri 4 Pematangsiantar adalah salah satu SMA favorit di Kota Pematangsiantar sehingga diasumsikan bahwa pengetahuannya lebih tinggi dari SMA lainnya dimana diasumsikan mereka akan lebih mengetahui tentang bahaya rokok bagi kesehatan dan menghindarinya sehingga peneliti berkeinginan meneliti di SMA tersebut. Berdasarkan latar belakang diatas maka peneliti tertarik untuk melakukan penelitian tentang hubungan reklame rokok dengan perilaku merokok pelajar SMA Negeri 4 di Kota Pematangsiantar
Cakupan Imunisasi Dasar Terhadap Standar Pelayanan Minimal di Puskesmas Desa Binjai Tahun 2018
Authors: Lukito Alamsyah
Published: November 2019

Penelitian ini bertujuan untuk mengetahui hasil cakupan imunisasi dasar terhadap standarpelayanan minimal di Puskesmas Desa Binjai tahun 2018. Untuk mengetahui distribusi frekuensiberdasarkan usia. Untuk mengetahui distribusi dan frekuensi berdasarkan jenis kelamin. Untukmengidentifikasi pencapaian cakupan imunisasi dasar terhadap standar pelayanan minimal diPuskesmas Desa Binjai tahun 2018. hasil penelitian di Puskesmas Desa Binjai diperoleh databahwa dari 94 orang, mayoritas respoden dengan jenis kelamin perempuan sebanyak 52 orang(55,3%), serta minoritas responden dengan jenis kelamin laki-laki sebanyak 42 orang (44.7%).cakupan imunisasi HB0 sebanyak 94 orang yaitu (100%) dengan target pencapaian standarpelayanan minimal 80 %. Cakupan imunisasi BCG sebanyak 94 orang yaitu (93,6 %) dengan targetpencapaian standar pelayanan minimal 90 %. Cakupan imunisasi DPT/HB1, DPT/HB2, DPT/HB3sebanyak 94 orang yaitu (100 %) dengan target pencapaian standar pelayanan minimal 95 %.Cakupan imunisasi Polio 4 sebanyak 94 orang (91,5 %) cenderung lebih rendah dari cakupanimunisasi Polio 1, Polio 2, Polio 3 yaitu 100 % dengan target pencapaian standar pelayananminimal 95 %. Cakupan imunisasi campak sebanyak 94 orang yaitu (95,7 %) dengan targetpencapaian standar pelayanan minimal 85 %. Dari hasil penelitian didapatkan kesimpulan bahwacakupan imunisasi dasar lengkap pada bayi usia 12-24 bulan di Puskesmas Desa Binjai tahun 2018telah mencapai target standar pelayanan minimal imunisasi yaitu >90%.
Pengaruh Pendekatan Student Centered Learning Terhadap Kemampuan Mengidentifikasi Tumbuhan di Hutan Taman Eden 100 Mahasiswa Pendidikan Biologi FKIP UISU Medan.
Authors: Nurhayati Nurhayati , Prabowo Pandu
Published: November 2019

Penelitian ini bertujuan untuk mengetahui adakah pengaruh Pendekatan Student Centered LearningTerhadap Kemampuan Mengidentifikasi Tumbuhan Di Hutan Taman Eden 100 Pada MahasiswaPendidikan Biologi FKIP UISU Medan. Penelitian ini dilaksanakan pada bulan Maret-Juni 2018.Penelitian ini menggunakan Metode Eksperiment Semu (Quasi experimen) dengan populasipenelitian adalah seluruh mahasiswa Pendidikan Biologi FKIP UISU Medan yang berjumlah 103mahasiswa yang kemudian dijadikan sampel sebanyak 21 mahasiswa semester 4 PendidikanBiologi dengan cara pengampilan sampel dengan teknik Non Probability sampling dengan carapertimbangan tertentu (sampling Purposive). Data yang dianalisis dalam penelitian ini adalahberupa test tertulis yaitu pre test dan post test pada materi vegetasi tumbuhan mata kuliah EkologiTumbuhan. Nilai rata-rata pre test sebelum pendekatan Student Centered Learning adalah 50,21dan standar deviasi 13,07 maka mahasiswa yang termasuk kategori baik sebanyak 3 orang(14,28%) dan 18 orang termasuk kategori kurang (85,71%). Dan rata-rata post test yang diperolehsetelah pendekatan Student Centered Learningyang diterapkan adalah 69,92 dan standar deviasiadalah 7,32 maka mahasiswa yang termasuk kategori baik sebanyak 14 orang mahasiswa (67%)dan 7 orang termasuk kategori kurang (33%). Berdasarkan uji hipotesis diperoleh thitung= 6,92sedangkan nilai ttabel= 1,72 jadi thitung> ttabel, maka Ha diterima dan H0 ditolak, dan dapatdisimpulkan bahwa ada pengaruh signifikan menggunakan Pendekatan Student CenteredLearningTerhadap Kemampuan Mengidentifikasi Tumbuhan Di Hutan Taman Eden 100 padaMahasiswa Pendidikan Biologi FKIP UISU Medan
Efektivitas Pengendalian Gulma Berdaun Sempit Dengan Menggunakan Herbisida Gus-Bensol (Garam, Urea, Sabun Colek, Bensin, Solar)
Authors: Manurung Saroha , Juanda Aulia , Wandani Suci
Published: November 2019

Herbisida Gus-Bensol merupakan pemberian nama dari suatu pencampuran lima bahan kimia yaitu garam, urea, sabun colek, bensin dan solar. Berdasarkan hasil uji awal yang dilakukan, herbisida Gus-Bensol memiliki potensi untuk dijadikan sebagai herbisida alternatif. Penelitian ini bertujuan untuk mengetahui pengaruh herbisida Gus-Bensol terhadap pengendalian gulma berdaun sempit dan tingkat kematian gulma di perkebunan kelapa sawit.Penelitian ini dilakukan pada areal praktek perkebunan kelapa sawit Lembaga Pendidikan Perkebunan (LPP) kampus Medan. Waktu penelitian dilakukan pada bulan Juni sampai dengan Agustus 2018. Penelitian menggunakan Rancangan Acak Kelompok (RAK) 2 faktorial, yang terdiri dari 4 perlakuan dan ulangan sebanyak 3 kali. Pengujian parameter disusun pada daftar sidik ragam dan dilakukan uji Beda Nyata Terkecil (BNT) dengan taraf 5% . Hasil penelitian menunjukan bahwa kandungan dalam herbisida Gus-Bensol dapat membunuh gulma berdaun sempit. tingkat keracunan gulma paling tinggi terdapat pada 7 Hari Setelah Aplikasi (HSA) pada perlakuan G1P3 : Imperata cylindrica + 75 ml / liter Gus-Bensol yaitu 70,88 % pada hari ke 7, G2P3 Setaria palmifolia + 75 ml / liter Gus-Bensol yaitu 70,65 % pada hari ke 7dan yang terkecil pada G1P0 Imperata cylindrica dan G2P0 Setariolia palmfolia yaitu 0,71 % (kontrol). Hal ini menunjukkan bahwa tingkat konsentrasi herbisida Gus-Bensol mempengaruhi besarnya tingkat kematian gulma berdaun sempit di perkebunan kelapa sawit. Daya racun yang ditimbulkan oleh herbisida Gus-Bensol bersifat kontak karena terlihat dari bercak-bercak dan terbakarnya bagian gulma yang terkena herbisida Gus-Bensol.
Sudut Pandang Indonesia atas Periode Kamp, 1942-1945
Authors: Arsa Dedi
Published: November 2019

Periode Jepang di Indonesia (1942-1945) bagi kebanyakan orang Eropa dan Indo-Eropa di Indonesia dikenang sebagai Periode Kamp, sebuah periode yang disebut-sebut sebagai periode yang “membingungkan sekaligus mengerikan”. Selama periode ini hampir seluruh orang Eropa dan Indo-Eropa yang ada di Indonesia dimasukkan ke dalam kamp-kamp tawanan/kerja paksa yang tersebar di berbagai tempat di Indonesia. Periode ini tampak begitu membekas dalam ingatan mereka, terutama bagi yang pernah merasakan langsung diinternir. Tulisan ini menelaah bagaimana pandangan (sudut pandang) orang Indonesia tentang interniran Eropa dalam kamp Jepang, dengan menelaah dua karya dengan topik tersebut yang ditulis orang Indonesia: sebuah otobiografi dengan tajuk Sebastian Tanamas, Tak Menggantang Asap: Otobiografi Seorang Pejuang dan Pengusaha Industri Kerajinan, dan sebuah roman berjudul Dan Perang pun Usai. Penyusunan tulisan ini menggunakan metode penyusunan yang dikenal pada umumnya dalam metode penyusunan sejarah modern, yaitu meliputi empat tahapan: heuristik berupa pengumpulan bahan/sumber, kritik sumber berupa kritik intern-ekstern, interpretasi, dan penulisan dalam bentuk historiografi.Kata kunci: Sudut pandang, Periode Kamp, Jepang.
Meningkatkan Aktivitas Belajar Ilmu Pengetahuan Sosial melalui Penerapan Strategi Injeksi pada Siswa Kelas IV SD Negeri 028228 Binjai TP 2016/2017
Authors: Ginting Diakoni
Published: November 2019

Ilmu Pengetahuan Sosial merupakan mata pelajaran yang mempersiapkan anak didik menjadi warga negara yang baik berdasarkan Pancasila dan UUD 1945, sehingga menumbuhkan dan  memiliki mental yang baik untuk dapat melaksanakan kegiatan pembangunan. Tujuan penelitian tindakan kelas ini secara khusus adalah untuk meningkatkan aktivitas belajar Ilmu Pengetahuan Sosial pada siswa Kelas IV SD Negeri 028228 Binjai dengan menggunakan strategi Injeksi. Penelitian tindakan kelas ini dilaksanakan dengan menggunakan dua siklus, sedangkan masing-masing siklus terdiri dari dua kali pertemuan. Data dalam penelitian ini berupa kegiatan guru, aktivitas belajar siswa, respons siswa dalam kegiatan belajar mengajar, dan hasil evaluasi belajar. Pengumpulan data dalam penelitian ini menggunakan observasi/pengamatan, angket, wawancara, dan dokumentasi. Hasil evaluasi menunjukkan terdapat kenaikkan yang tuntas belajar dari 25 siswa (65,79%) pada pra tindakan menjadi 30 siswa (78,95 %) pada Siklus I, dan menjadi 33 siswa (86,84%) pada Siklus II. Sedangkan yang belum tuntas belajar mengalami penurunan dari 13 siswa (34,21 %) pada pra tindakan menjadi 8 siswa (21,05%) pada Siklus I, dan menjadi 5 siswa (13,16%) pada Siklus II.Kata kunci: Strategi injeksi, aktivitas belajar, ilmu pengetahuan sosial.
Ahok dan Habib Rizieq Shihab dalam Isu Foto Hoax: Opini PGI dan HKBP di Kota Medan
Authors: Rozi Fakhrur , Firman Rizky N.
Published: November 2019

Kasus penistaan agama yang dilakukan oleh Basuki Tjahaja Purnama (Ahok) pada tahun 2016 menjadi isu nasional dan menimbulkan pro-kontra. Penelitian ini menggunakan metode deskriptif-kualitatif yang bertujuan mendeskripsikan kasus penistaan agama di media sosial yang melahirkan opini mayor dan opini minor di masyarakat. Artikel ini menguraikan opini minoritas lebih pada ormas agama Kristen tentang foto hoax Ahok dan Habieb Rizieq Shihab yang beredar di Instagram dengan Teori Spiral Keheningan. Penelitian ini menghasilkan temuan: Pertama, opini mayoritas terhadap foto hoax pada akun @aganharahap terkait mengakibatkan opini minoritas cenderung bungkam. Kedua, PGI dan HKBP menyadari sebuah foto hoax Ahok dan Habib Rizieq Shihab tidak memiliki unsur kebencian dan tidak perlu dikhawatirkan. Ketiga, bentuk perlawanan opini minoritas terlihat dalam Aksi Seribu Lilin untuk Ahok.Kata kunci: Opini publik, foto hoax, Instagram.
Upaya Peningkatan Hasil Belajar Siswa dengan Menggunakan Metode Team Games Tournament (TGT) pada Kompetensi Dasar Sumber Daya Alam dan Kegiatan Ekonomi Masyarakat di Kelas V SD Negeri 060924 Medan Amplas
Authors: Adewiyah Rabiatul
Published: November 2019

Penelitian ini bertujuan untuk meningkatkan hasil belajar siswa pada kompetensi dasar sumber daya alam dan kegiatan ekonomi masyarakat di kelas V SD Negeri 060924 Medan Amplas melalui penerapan metode team games tournament (TGT). Jenis penelitian yang dilakukan dalam penelitian ini adalah Penelitian Tindakan Kelas (PTK), penelitian ini dilakukan dalam dua siklus yang didalamnya terdapat empat tahapan utama, yaitu perencanaan, tindakan, pengamatan, dan refleksi. Berdasarkan analisis data yang telah dilakukan peneliti dalam penelitian ini, maka dapat ditarik kesimpulan sebagai berikut: 1) Penggunaan metode pembelajaran Team Games Tournament (TGT) pada mata pelajaran IPS pokok bahasan sumber daya alam dan kegiatan ekonomi masyarakat dapat meningkatkan hasil belajar siswa; 2) Dari pelaksanaan siklus I nilai rata-rata yang diperoleh siswa adalah 5,47 dan siswa yang tuntas adalah sebanyak 10 siswa atau 33,33%; dan 3) Hasil pelaksanaan siklus II nilai rata-rata yang diperoleh siswa adalah 7,25 dan jumlah siswa yang tuntas sebanyak 23 siswa atau 76,67%.Kata Kunci: Hasil Belajar, Metode Team Games Tournament.