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OPTIMALISASI BIOGAS DARI KOTORAN SAPI DENGAN PENAMBAHAN BAHAN ORGANIK DARI LIMBAH PERTANIAN DAN PASAR
Agrisaintifika : Jurnal Ilmu - Ilmu Pertanian
Vol 6
, No 1
(2022)
Cow farm waste is one type of raw material that is commonly used in biogas formation technology. According to 1Wahyuni (2013), a cow can produce fresh waste between 20 to 29 kg/day. According to 2Kaharudin and Sukmawati (2010), biogas on a household scale with a number of livestock of 2-4 cows or a supply of dung of approximately 25 kg/day is sufficient to use a reactor tube with a capacity of 2500-5000 liters which can produce biogas equivalent to 2 liters of oil. land/day and is able to meet t...
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Contact stress analysis of a spur gear using Lewis and Hertz theory
The rapid development of the automobile and aircraft industries has made applying gear technology necessary. Gears offer the benefits of efficiency, reliability, simplicity and a higher speed ratio with power transmission. However, they cannot transmit power over a long period, are more expensive when compared to belts and chain drives and requires continuous lubrication. They are used for transmitting high load in gear tools. The gear teeth fail when subjected to a high load beyond a certain li...
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Investigation of heat treatment strategies for improvement of production capacity of coin stamping dies
This paper presents a study on the production capacity of stamping dies for minting coins under different heat treatment processes, particularly austenite temperatures, using a vacuum furnace. In the study, the specimen material was made from Bohler K340 steel. The first heat treatment strategy included heating the specimens to a stable austenite temperature at 1080°C, then holding for 120 minutes and cooling rapidly with gas quenching media with a pressure of 5 bar. Tempered treatment was perfo...
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Concept design and simulation analysis of floating water turbine
Al-Quraishi, Mohammed Baqer Zaki Yahya
; binti Mohd, Siti Syafiqah
; Sarip, Shamsul
; Binti Mohammad, Roslina
; Mad Kaidi , Hazilah
Researchers in Malaysia are attempting to advance and develop the renewable energy sector in response to increased emissions, fossil fuel exhaustion, and the need for electricity in remote areas. Water turbines are known to have a high potential for generating electricity. This paper aims to propose a new floating turbine concept and analyse it using Computational Fluid Dynamics. In the study, finding the idea started with infaring the market needs in Malaysia and transforming them into design r...
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Pengaruh Latihan Ladder Drill Icky Shufle dan Two Foot Lateral Hoop terhadap Peningkatan Kelincahan Pemain Sepak Bola Usia Dini
Journal of Education and Sport Science
Vol 3
, No 2
(2022)
Kurangnya kelincahan pemain SSB PS putra Ujungpangkah Gresik menyebabkan keseimbangan yang kurang optimal. Penelitian ini bertujuan untuk membuktikan pengaruh variasi ladder drill icky shuffle dan two foot lateral hoop terhadap kelincahan pemain sepak bola anak usia dini. Metode penelitian ini menggunakan pretest posttest control group design. Subyek penelitian ini adalah 18 pemain dari SSB PS putra Ujungpangkah Gresik. Berdasarkan hasil penelitian dapat disimpulkan bahwa terdapat pengaruh yang...
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Dampak Pandemic Covid terhadap Psikologis Atlet Puslatda Sepatu Roda Jawa Timur
Journal of Education and Sport Science
Vol 3
, No 2
(2022)
Pandemic covid 19 yang terjadi di Indonesia memiliki dampak besar bagi beberapa sektor, olahragapun tidak luput terkena imbas dengan adanya pandemic ini.. Penelitian ini dilakukan trehadap Atlet Puslatda Sepatu Roda Jawa Timur yang akan bersiap untuk menghadapi PON PAPUA 2020, mundurnya pelaksanaan PON menjadi 2021 dikarena kan tingginya kasus pada tahun 2020, dapat memberikan tekanan yang berlebih terhadap psikis atlet dan terbatasanya mobilitas dan ruang lingkup dikarena kebijakan yang diberla...
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PENGARUH KEKUASAAN TERHADAP PERUBAHAN LAHAN HUTAN DI SURAKARTA TAHUN 1900-1998
Keraton: Journal of History Education and Culture
Vol 4
, No 1
(2022)
Changes in forest land is a phenomenon that accompanies human history. The role of the ruler is in the spotlight when forest land in an area is degraded. One of the areas that is experiencing a narrowing of forest land is Surakarta. From the colonial period to the New Order, Surakarta experienced a change in the face of the city, especially the loss of forests in the region. The purpose of this study is to reveal the influence of the rulers in Surakarta during the period 1900 to 1998 on forest l...
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MENAPAKI JEJAK HADRAH FATTAHILLAH DI KARTASURA 1998-2019
Keraton: Journal of History Education and Culture
Vol 4
, No 1
(2022)
This research discusses about the journey of local Hadrah called Hadrah Fatahillah from Kartasura. The scope of this research started from 1998-2019. The problems that will be discusses start from the history of its establishment, the dynamics of of the journey and the existence of Hadrah Fatahillah. Based on the problems, this research used history research method start with theme or topic, source collection, source verification, interpretation of data and the last part is historiography. This...
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Studi Eksistensi Komunikasi Antarbudaya dalam Komunitas Seminari Menengah Wacana Bhakti
Keraton: Journal of History Education and Culture
Vol 3
, No 2
(2022)
Community life is living together with other people based on one bond, one calling, and one commitment. This study aims to determine whether community life at the Wacana Bhakti Intermediate Seminary can help seminarians get to know other cultures so that cultural exchanges occur in the community, as well as see if there are inaccurate perceptions among seminarians. The respondents of this study were seminarians (community members) in the Wacana Bhakti Minor Seminary starting from grade 1 to the...
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Perjuangan dan Kegigihan Nyai Ageng Serang dalam Perang Diponegoro Tahun 1825-1830
Keraton: Journal of History Education and Culture
Vol 3
, No 2
(2022)
This study aims to determine the form of struggle carried out by Nyai Ageng Serang, to find out the role of Nyai Ageng Serang in the Diponegoro war in 1825-1830 to find out how Nyai Ageng Serang was initially involved in the rebellion led by Prince Diponegoro. Research and writing about the persistence and struggle of Nyai Ageng Serang in the Diponegoro war in 1825-1830 using the Historical Research Method. From this research, it can be concluded that Nyai Ageng Serang is a female warrior figure...
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