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PENGARUH VARIASI DEBIT ALIRAN DAN PIPA ISAP (SECTION) TERHADAP KARAKTERISTIK POMPA SENTRIFUGAL YANG DIOPERASIKAN SECARA PARALEL ., Supardi; Renwarin, Max Millian
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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The pump is a machine used to raise the liquid from the surface of the low to the higher, or move the fluidfrom the high pressure. Plan and create a means of centrifugal pumps for water flow to the arrangement / circuitParallel to the needs of fluid mechanics lab in August 17, 1945 the University of Surabaya. Step experiment with agate valve openings 900, 700, 500, 350, with a maximum rotation 2580 RPM pump, get the planning andcharacteristics (Head, Capacity) of the two pumps are arranged in parallel. The influence of the suction pipediameter variations on these tests affect the capacity (Q). The larger the diameter of the suction pipe is used, thegreater the capacity of the water produced. The influence of variations in flow through the valve opening effect onHead (H). the smaller the aperture setting, the valve resulting Head Small increasingly.Keywords: Centrifugal Pumps, Suction Pipe, Valves, Head and capacity.

NOZZLE DAN SUDUT BUANG SUDU TERHADAP DAYA DAN EFISIENSI MODEL TURBIN PELTON DI LAB. FLUIDA ., Supardi; Prasetya, Endra
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Pelton turbine is one of the impulse turbines, wherein the turbine is able to transform the water potentialenergy into kinetic energy by using a nozzle. The water that comes out of the nozzle with high speed at atmosphericpressure hit the bucket which consists of two symmetrical parts. After hit the bucket, the direction of the flowvelocity change resulting in a change of momentum (impulse), consequently rotating turbine wheel generatesmechanical energy. As well as pelton turbine models in laboratory fluid which has been studied by R. HartonoTeguh in his finally task in 2006 on Experimental studies Determining Characteristics of Model Redesign Peltonturbine in Lab. Fluid. Assess experimental this time aimed at the development which also examines the peltonturbine models to determine the effect of variations in the diameter of the nozzle and the angle of the bucket waste ofthe generated power and efficiency. Variation used is the diameter of the nozzle 6 and 9 mm with exhaust bucketangle 145o, 165o, and 175o. Pelton turbine models that were tested using a single nozzle, with a number of buckets22 pieces, as well as using a runner diameter of 150 mm. Dimensional bucket used has several main dimensions,namely the width of the bucket 36 mm, bucket length 27 mm, bucket depth of 8.10 mm, bucket gap width of 10.8 mm,and the distance of the center beam bucket Valentine of 13.5 mm. From the data obtained by tests performed powerand the largest turbine efficiency at variation of 6 mm diameter nozzle at an angle of 175o bucket exhaust i.e. 38.76Watts with an efficiency of 82.80%. The largest generator power can be achieved in the variation of 6 mm diameternozzle at an angle of 175o bucket exhaust i.e. 10.4 Watt, while the best efficiency occurs at the nozzle 9 mm diametervariation with angle of 175o exhaust bucket that is 50.61%.Keywords: Pelton Turbine, and Power Efficiency

KAJI EKSPERIMENTAL PENGARUH VARIASI DIAMETER NOZZLE DAN DIAMETER RUNNER TERHADAP DAYA DAN EFISIENSI MODEL TURBIN PLETON ., Supardi; Pramana, Chandra
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 02 (2015): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Pelton turbine is one type of impulse turbine, type of water turbine which works to change the available whole energy of water such as pressure, potential, and speed into kinetic energy to rotate turbines. Runner whichconsist of a number of blades is the main component on Pelton turbine when the turbine rotates because the force ofwater at high speed out of nozzle. Impulse reactions occur because the water jets hit the blades causing torque ofturbine shaft causing runner will continue rotates for object hit the blades. Experimental assessment was conductedto investigate effect of nozzle diameter variations as a media to transmit water and runner diameter variations asthe main media for generating mechanical energy in power and efficiency of the Pelton Turbine models in FluidLaboratorium August 17, 1945 University of Surabaya as a prototype model of Micro Hydro Power Plant( MHPP ). Stages of research was done by designing and planning some variation of the nozzle diameter and runnerdiameter with reference using head and flow capacity of available water pump. Specified parameters and variablesused for experimental assessment is single nozzle with diameter 0,006 m and 0,009 m and runner with diameter 0,15m, 0,17 m and 0,19 m. Blades used half cylinder shape with the specifications, width 0,036 m, length 0,027 m, depth0,00081 m, blade gap width 0,001 m, and the distance of center water emmision to blade tip 0,00135 m. From thetest results, variations of nozzle with diameter 0,006 m and runner with diameter 0,15 m produces the largestturbine power 49,53 watt, the best turbine efficiency of 87,97%, and the largest generator power 10,56 watt.Meanwhile, the variation nozzle with diameter of 0,009 m and runner with diameter 0,15 m, generating the bestgenerator efficiency 52.43%. From the characteristics graph of Pelton turbines, found same trend with the theorythat the efficiency of the turbine decreasing after reaching the maximum efficiency speed ratio of 0,46 and higherturbine efficiency directly proportional to turbine power produced.Keyword : Pelton Turbine, Nozzle, Runner, Power, Efficiency

KAJI EKSPERIMENTAL PENGARUH VARIASI DIAMETER NOZZEL DAN JUMLAH SUDU TERHADAP DAYA DAN EFFISIENSI PADA PROTOTYPE TURBIN PELTON DI LAB. FLUIDA ., Supardi; Ridwan, Moh.
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Review of experimental effect of variations in the diameter of the nozzle and the amount of bucket on thepower and the efficiency on prototype pelton turbine in the Lab. Fluid. The aim of this study wants to know the effectof variations in the diameter of the nozzle and amount of the bucket to the power and efficiency of the existing peltonturbine prototype in the laboratory Fluid in the Pico-hydro scale. The steps in this research include the study ofliterature and field studies, designing, manufacturing of test equipment, testing, data analysis, and conclusions.Variation is done using nozzle diameter (dn) 6 mm and 9 mm, Î²2 at 165o, amount of bucket (Z) 12 units, 17 units,and 22 units. For the runner has a large diameter of 150 mm, while for the power plants or generators using spooland magnet on motorcycles. Results of this testing is the largest input power (Pin) at d 6 mm with a value of 46.81watts. The largest turbine power (Pt) and turbine efficiency (Î·t) at dnn = 6 mm with Z = 12 unit with value P= 40,34watt and Î·t =86,18 watt. The largest generator power (Pgen) at d = 6 mm with Z = 22 unit with value 9,6 watt,meanwhile for the largest generator efficiency (Î·genn) and the largest efficiency system (Î·sis) at d= 9 mm with Z = 22unit with value Î·gen = 54,24 % and Î·= 25,82 %.Keywords: Pelton Turbine, Bucket, Nozzle, Power and Efficiency

The Effect of Motivation and Leadership on Performance Through Productive Behavior ., Muhdar; ., Bagus; ., Supardi
International Journal of Social Science and Business Vol 2, No 4 (2018)
Publisher : Universitas Pendidikan Ganesha

This study is intended to analyze the influence of motivation and leadership on performance through productive behavior of case studies on Civil Servants (PNS) teachers in Kalibaru State Vocational School. The type of data used is primary data, obtained by interviewing and distributing questionnaires to the population of all Civil Servants teachers in the Kalibaru State Vocational School in amount 38 people. By using regression analysis, the results are obtained: (1). Motivation has a positive and significant influence on productive behavior, (2). Leadership has a positive and significant influence on performance, (3). Motivation has a positive and significant effect on performance through productive behavior, (4). Leadership has an influence on the performance of PNS teachers in Kalibaru State Vocational School, and (5). Productive behavior has an influence on the performance of PNS teachers in Kalibaru State Vocational School. From the results of the study it is expected that schools and principals pay more attention to and improve services to PNS teachers in motivating and leading teachers and providing positive behavior so that PNS teachers can work well, responsibly, comfortably and are able to improve school goals in accordance with the school's vision and mission

The Effect of The Work Environment on Front Office Employees' Performance at The Pacific Palace Hotel Batam Sagala, Rahel Natasya; Lubis, Arina Luthfini; ., Supardi
Jurnal Manajemen Pelayanan Hotel Vol 7 No 2 (2023): Jurnal Manajemen Pelayanan Hotel
Publisher : Akademi Komunitas MAPINDO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37484/jmph.070211

Moreover, the city of Batam is strategically located near two national borders, namely Singapore and Malaysia,this is a big opportunity in the tourism sector, especially in the world of hotels. This research aims to analyzewhether the work environment has an influence on the effectiveness of employee performance, especially inthe front office environment at the Pacific Palace Hotel Batam. The research method used is a quantitativeapproach with simple regression analysis techniques to assess the relationship between 2 variables, workenvironment variables (as independent variables) and employee performance (as dependent variables). Dataprocessing uses simple regression analysis which includes normality test, T test and F test, and R2 test usingSPSS statistical software. The results are valid. In the hypothesis test results, H1 is accepted, this can also beseen from the significance results in tcount which has a result of 0.01. Overall the research results show thatthe hopethesis test on the work environment as a variable (X) has a positive effect on employee performanceas a variable (Y) both partially and simultaneous. The result of the regression equation is Y = 21.098 + 0.752X.The coefficient of determination (R2) results were 74.6%, which means employee performance beinginfluenced by other variables outside of this research test. Therefore, it is important for hotel management toprioritize improving working environment conditions, including employee training and development, so thatmaintaining employee welfare through the work environment can improve employee performance resultswhich ultimately can maintain competitiveness in the competitive hospitality industry.

EVALUASI KERUSAKAN JALAN PADA PERKERASAN RIGID DENGAN MENGGUNAKAN METODE BINA MARGA (STUDI KASUS RUAS JALAN SEI DURIAN – RASAU JAYA km 21 + 700 S.D. km 24 + 700) ., Supardi
Jurnal Teknik Sipil Vol 13, No 1 (2013): Edisi Juni 2013
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v13i1.2077

Jalan Sei Durian?-?Rasau Jaya merupakan salah satu jalan provinsi yang mempunyaifungsi sebagai penghubung antara Kabupaten Kubu Raya dengan kabupaten-kabupatenlainnya. Jalan ini memegang peranan penting dalam memacu pertumbuhan ekonomi. Penelitianbertujuan untuk mengevaluasi jenis kerusakan, mengidentifikasi tingkat kerusakanjalan dan memberikan alternatif perbaikan kerusakan jalan. Tempat penelitianpada ruas jalan Sei Durian?-?RasauJaya dengan panjang jalan 3 km, jenis perkerasan kaku (rigid pavement),memiliki satu jalur lebar jalan 5 m. Metode penelitian Bina Marga. Jeniskerusakan yang terjadi terdiri dari 10 jenis, yaitu retak memanjang (200,8 m2),retak melintang (65,76 m2), punch-out (92,75 m2), lubang(84 m2), retak berkelok-kelok (19,25 m2), retak diagonal(15,62 m2), penurunan (20 m2), retak bersilang pelat pecah(3 m2), retak sudut (1,45 m2), dan gompal (0,135 m2).Total kerusakan seluas 502,765 m2 atau 3,35% dari luas total 15000 m2.Kerusakan paling dominan adalah retak memanjang 39,94%, punch-out 18,45%,lubang 16,71% dari total luas kerusakan. Perbaikan kerusakan dengan memperbaikispot-spot kerusakan pada stasiun tertentu dan bersifat pemeliharaanjalan rutin atau dengan cara rehabilitasi (peningkatan mutu dan kualitasjalan).Kata-kata kunci: evaluasikerusakan, perkerasan rigid,metode binamarga

Implementation of Economic Crime After The Provision of Law Number 11 of 2021 Concerning The Prosecutor ., Supardi
Pena Justisia: Media Komunikasi dan Kajian Hukum Vol. 21 No. 1 (2022): Pena Justisia
Publisher : Faculty of Law, Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/pj.v21i1.1940

The Criminalization of Economic Crimes occurred on May 11, 1995 which was marked by the birth of the Law on Economic Crimes (UUTPE). Since the birth of the law, the term "harming the economy" has emerged, which is similar to the element "harming the country's economy" in the Corruption Crime (TPK) offense. On December 31, 2021, the Prosecutor's Law (UUK) was promulgated which gives authority to investigate, investigate and prosecute cases of Economic Crimes (TPE), but in the explanation of Article 35 paragraph (1) letter k provides an interpretation of economic crimes such as the interpretation of "harmful" the country's economy” in the TPK. The use of the phrase "harming the country's economy" in the explanation of Article 35 paragraph (1) letter k of the UUK raises interpretation problems regarding the meaning of "harming the economy" as referred to in the UUPE which can have an impact on implementation in creating justice and legal certainty in handling TPE cases. Therefore, this study formulated the formulation of the problem as follows: (1) How to interpret the TPE regulated in the UUTPE (2) How to distinguish the TPE regulated in the UUTPE and UUTPK and (3) How to measure the authority of the Prosecutor's Office in handling TPE cases so as to create justice and legal certainty. The research method used is normative juridical, namely a method that refers to the applicable laws or regulations, legal theories or opinions of scholars. The research is based on secondary data, while the research specifications used are descriptive analytical. The data sources used consist of primary legal materials and secondary legal materials. The results of the study conclude that: (1) UUTPE has not been revoked and is still valid as ius constitutum, (2) The basic differences in the state economy between UUTPE and UUTPK are: TPE is more related to the world of trade and is not related to strategic policies of the central or regional government and (3) Based on Law Number 11 of 2021 concerning Amendments to Law Number 16 of 2004 the Prosecutor's Office has the authority to handle TPE cases, but the definition of the state economy according to the law is still confusing because it is equated with the meaning in the UUTPK

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