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PEMBUATAN BIOETANOL DARI JERAMI PADI DENGAN BANTUAN ENZIM SELULASE DARI JAMUR TIRAM Setiawan, Hery; Kusumo, Ersanghono
Indonesian Journal of Chemical Science Vol 4 No 2 (2015)
Publisher : Indonesian Journal of Chemical Science

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Abstract

Kebutuhan energi fosil di Indonesia seperti bensin kian meningkat, sementara itu ketersediaan energi fosil berbanding terbalik dengan kebutuhannya, sehingga dibutuhkan sumber energi alternatif terbarukan seperti bioetanol. Indonesia merupakan penghasil beras besar di dunia yang memberikan limbah padat jerami padi yang sangat besar yaitu 180 juta ton bahan kering per tahun. Jerami padi ini mengandung sekitar 40% selulosa, 30% hemiselulosa dan 15% lignin. Kadar selulosa yang cukup tinggi ini dapat dikonversi menjadi bioetanol. Tujuan penelitian ini untuk mengetahui efektivitas rasio enzim selulase dari jamur tiram dengan jerami padi dalam proses hidrolisis untuk menghasilkan glukosa yang dapat dikonversi menjadi bioetanol. Jerami padi dijadikan serbuk kemudian dilakukan delignifikasi dengan larutan NaOH 0,01 M. Selanjutnya hidrolisis selulosa menjadi glukosa dengan variasi rasio substrat (gram) dengan enzim (mL) sebesar 0,06 g/mL, 0,08 g/mL, 0,10 g/mL, dan 0,20 g/mL diinkubasi 2 jam pada suhu 50 ºC. Hidrolisat paling baik pada rasio sebesar 0,10 g/mL menghasilkan kadar 0,2738 mg/20g substrat dianalisis glukosa dengan spektrofotometer UV-Vis serta dilanjutkan proses fermentasi dengan variasi waktu 3, 6, 9, dan 12 hari kemudian didestilasi. Hasil destilat hari ke-6 menghasilkan kadar etanol yang paling tinggi yaitu sebesar 1,7793%.
ANALISIS KOMPARASI PENDAPATAN USAHA DAN PROFITABILITAS PETERNAKAN AYAM BROILER POLA KEMITRAAN PADA BERBAGAI PERUSAHAAN INTI DI KECAMATAN GUNUNGPATI KOTA SEMARANG Kusuma, Alvian Prabandy; Setiawan, Hery; Ekowati, Titik
Animal Agriculture Journal Vol 3, No 1 (2014): Volume 3, Nomor 1, Tahun 2014
Publisher : Animal Agriculture Journal

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Abstract

ABSTRAKPerbedaan harga kontrak setiap perusahaan inti diduga mempengaruhi pendapatan dan profitabilitas para peternak plasma ayam broiler. Penelitian ini bertujuan untuk mengetahui dan menganalisis 1) Biaya produksi, penerimaan, dan pendapatan usaha peternakan ayam broiler; 2) Profitabilitas, feed conversion ratio (FCR), dan feed cost per gain (FC/G); serta 3) Perbandingan nilai pendapatan, profitabilitas, feed conversion ratio, dan feed cost per gain. Metode penelitian ini adalah metode studi kasus. Penentuan sampel dilakukan menggunakan metode sensus. Pengumpulan data terdiri dari data primer dan sekunder. Data dianalisis dengan uji F (serentak) dan One Way Anova menggunakan SPSS 16 for windows. Hasil dari penelitian ini menunjukkan bahwa 1). Pendapatan dinyatakan berbeda dikarenakan adanya perbedaan dari harga bibit, pakan, vitamin, obat, dan kimia (VOK), bonus prestasi, dan bonus harga pasar; 2). Profitabilitas dinyatakan menguntungkan kecuali PT. Mustika (4,50%) karena persentase profitabilitas di atas persentase suku bunga deposito Bank BRI sebesar 6,25%; 3). Para peternak plasma dari perusahaan inti PT. Mustika memiliki FCR tertinggi, yaitu 1,79, PT. Malindo memiliki FC/G tertinggi, yaitu 11.747,41, dan PT. Ganesa memiliki FCR dan FC/G yang terendah, 1,76 dan 11.431,94; dan 4). Hasil uji hipotesis menyatakan ada perbedaan antara pendapatan, profitabilitas, FCR, dan FC/G pada tingkat signifikansi α = 0,05 dan para peternak plasma dari PT. CIS mempunyai pendapatan yang paling baik serta PT. Ganesa mempunyai profitabilitas, FCR, dan FC/G yang paling baik.Kata kunci : ayam broiler; biaya produksi; penerimaan; pendapatan; profitabilitas ABSTRACTThe price difference of each company's core contract is expected to affect revenues and profitability of broiler breeders plasma. This study aims to identify and analyze 1) Production costs, revenues, and operating revenues broiler farm partnership; 2) Profitability, feed conversion ratio (FCR), and feed cost per gain (FC/G); and 3) Comparison of revenues, profitability, feed conversion ratio, and feed cost per gain. This research method was the case study method. Determination of the sample was performed using census method. The data collection consists of primary and secondary data. Data were analyzed with the test F (simultaneous) and One Way ANOVA using SPSS 16 for windows. The results showed that 1). Income expressed differently because of differences in the price of seed, feed, vitamins, drugs, and chemicals (VOK), performance bonuses, and bonus market price; 2) The profitability expressed profitable except PT. Mustika (4.50%) because percentage of profitability over the percentage of BRI deposit rate of 6.25 %; 3) Plasma farmers of the core companies of PT. Mustika has the highest FCR, PT. Malindo has FC/G high, and PT. Ganesha has the FCR and FC/G the lowest; and 4). The results of testing the hypothesis stating no difference between revenue, profitability, FCR, and FC/G at a significance level α = 0.05 and plasma farmers of PT. CIS has the most revenue as well as PT. Ganesha has profitability, FCR, and FC/G is best.Key words : broiler’s; production costs; revenue; income; profitability
Analisis Kegiatan Suami Dalam P4K Pada Kehamilan Risiko Tinggi Setiawan, Hery; Shaluhiyah, Zahroh; Mustofa, Syamsulhuda Budi
Jurnal Kesehatan Masyarakat (Undip) Vol 8, No 1 (2020): JANUARI
Publisher : Fakultas Kesehatan Masyarakat Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.618 KB) | DOI: 10.14710/jkm.v8i1.25673

Abstract

P4K sebagai program dalam menurunkan angka kematian ibu dan bayi. Kehamilan menjadi bagian dari fisiologis normal wanita yang tidak menutup kemungkinan dapat terjadi risiko tinggi sehingga perlu pemantauan intensif dengan bantuan suami. Penelitian ini bertujuan untuk menganalisis kegiatan suami pada P4K pada kehamilan risiko tinggi. Penelitian ini menggunakan pendekatan kualitatif dan subyek penelitian diambil dengan menggunakan purposive sampling yang berjumlah 4 orang dan teknik pengambilan data menggunakan indepth interview. Hasil penelitian menunjukkan sebagian besar subyek penelitian belum menyiapkan dengan baik P4K seperti jarang mendampingi istri dalam pemeriksaan kehamilan, biaya persalinan, belum adanya penyiapan calon donor darah, transportasi, pendampingan persalinan dan bahkan seluruh subyek penelitian belum menentukan alat kontrasepsi (KB) pasca persalinan.
DIGITAL TECHNOLOGY MEDIATES BUSINESS STRATEGIES AND JOB CREATION LAW TO MSME PERFORMANCE IN THE CULINARY SECTOR Setiawan, Hery; Santy, Yuyu Jahratu Noor; Fitriyani, Zenita Afifah; Huda, Khasbulloh
Jurnal Ilmiah Manajemen, Ekonomi, & Akuntansi (MEA) Vol 7 No 3 (2023): Edisi September - Desember 2023
Publisher : LPPM STIE Muhammadiah Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31955/mea.v7i3.3599

Abstract

The purpose of this study is to determine the direct and indirect influence on the business strategy variables and the Job Creation Law variable on the MSMEs Performance in the culinary sector which is mediated by the Digital Technology variable. The research method used is a quantitative method using the SmartPLS 3.2.8 program in analyzing the data, so that it can identify the relationship between variables. The research population is MSMEs in the culinary sector in Prajurit Kulon sub-district. By using the Slovin formula, a sample result of 83 was obtained. The data collection techniques used were observation, interviews and questionnaires. Data analysis was carried out using outer model test, innerl model test, and hypothesis test.The results of the study are suspected to have a direct influence on the variables of business strategy and the Job Creation Law on the Performance of MSMEs in the Culinary Sector mediated by digital technology. This research is expected to help improve the performance of MSMEs in the culinary sector in the Prajurit Kulon district, Mojokerto City, and can be a reference and study for research on digital technology that mediates business strategies and the Job Creation Law on MSME performance.
Gatekeeping konten viral media sosial (studi kasus harianjogja.com, jogja.tribunnews.com, & suarajogja.id) Setiawan, Hery; Handayani, Wuri
Lektur: Jurnal Ilmu Komunikasi Vol 5, No 4 (2022): Lektur: Jurnal Ilmu Komunikasi
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/lektur.v5i4.19182

Abstract

AbstrakPenelitian ini berusaha menjawab bagaimana aktivitas serta faktor pengaruh dari gatekeeping yang dilakukan media massa terhadap konten viral di media sosial. Metodologi studi kasus digunakan untuk menelusuri sistem kerja dan metode redaksi yang diterapkan oleh tiga media massa dari Yogyakarta. Data penelitian diperoleh melalui wawancara terhadap redaktur, asisten redaktur, uploader, dan reporter; serta dokumentasi pemberitaan. Peneliti menggunakan Teori Hierarki Pengaruh (Shoemaker Reese, 2014) untuk membahas aktivitas gatekeeping media massa di era internet serta faktor-faktor yang memengaruhinya. Hasil penelitian menunjukkan bahwa media massa masih memiliki peran dalam melakukan seleksi terhadap konten viral media sosial. Namun, peran tersebut tidak dilakukan secara ketat karena nyaris semua konten viral terpilih lolos begitu saja melewati gerbang keredaksian. Konten viral hanya dinilai secara berbeda berdasarkan sensitivitas informasi. Gatekeeping konten viral dipengaruhi oleh level institusi sosial (pasar pembaca dan perubahan teknologi media). Media sosial Twitter menjadi platform news-breaker tool andalan awak media karena unggul dari segi kecepatan dan kebaruan informasi.Kata kunci: gatekeeping, konten viral, media massa, teori hierarki pengaruh AbstractThis research was conducted to gain an understanding of the activity and influence factor of mass media gatekeeping toward social media viral content. Three Yogyakarta-based local online media were explored by the case study method. Research data was collected through interviews with the editor, assistant editor, uploader, and reporter; and news stories documentation. The hierarchy of influence theory (Shoemaker Reese, 2014) was applied as the main tool to analyze entire data. The result shows that mass media resist their role as a gatekeeper by selecting and fact-checking information. However, they do not carry out strictly as almost selected viral contents are able to pass the editorial gate without any reduction or rejection. Viral contents are considered based on their sensitivity. The gatekeeping of social media viral content is mainly influenced by the institutional level (market reader and technological shifting). Twitter is the favorite news-breaking tool for the rapidness of information updates.Keywords: gatekeeping, viral content, mass media, the theory of influence hierarchy
IMPACT STRENGTH OF HORIZONTAL BAMBOO FIBER AND IRON SAND WITH EPOXY MATRIX Novanda, Billy Putra; Ardianto, Haris; Setiawan, Hery
Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Vol 8 No 1 (2022): Vol 8 No 1 (2022): TEKNIKA STTKD: JURNAL TEKNIK, ELEKTRONIK, ENGINE
Publisher : Sekolah Tinggi Teknologi Kedirgantaraan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1112.229 KB) | DOI: 10.56521/teknika.v8i1.593

Abstract

Composite is a material composed of 2 materials, namely matrix and filler. Natural fibers, especially bamboo fibers and iron sand that are waste in Indonesia, have the potential to be developed as engineering materials for composite materials reinforced with natural materials. Therefore, the researcher used bamboo fiber and iron sand as a filler and epoxy resin as a matrix. The method used in this research is experimental. Impact test aims to determine the mechanical properties of the composite to be tested. In the manufacture of composite specimens, researchers used the hand lay-up method in accordance with the ASTM D 6110-10 standard. Meanwhile, to see the physical properties, researchers used macro photos to see the difference in composite fractures after impact testing. This study aims to determine the impact strength of horizontal bamboo fiber composites and iron sand with an epoxy matrix. The composite was made with fraction 1 (50% epoxy matrix and 50% horizontal bamboo fiber), fraction 2 (50% epoxy matrix and 50% iron sand), fraction 3 (50% epoxy matrix, 20% horizontal bamboo fiber and 30% iron sand ). The results of the charpy impact test showed that the impact strength of the composite fraction 1 was 50 KJ/m². for the composite test fraction 2 has an impact strength is 23 KJ/m². Meanwhile, fraction 3 produces an impact strength is 30 KJ/m². It can be seen from the results of the macro photo that the specimens of fractions 1 and 3 have fiber pull-outs, while for fraction 2 it can be seen that the sand grains absorb resin well.
Handling Cases of Bullying Practices in The School Environment in Terms of Criminal Law Dores, Dedi; Mubarok, M. Khusni; Setiawan, Hery; Kumala, Milka; Khilmi, Muhammad
International Journal of Sustainable Law Vol. 1 No. 1 (2024)
Publisher : Universitas Kristen Cipta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71131/642t3b02

Abstract

This research aims to find out what are the backgrounds of bulliying, law enforcement for perpetrators, protection for victims and how to find solutions so that bulliying cases do not mushroom in places that should be a place of knowledge. The research method used is normative research method using regulatory approach. Legal protection for victims of bullying crimes is regulated in Article 76C of the Child Protection Law No. 35 of 2014. This article contains content that prohibits violence against children. Legal protection against the perpetrators of bullying, where the perpetrator also has rights that are his rights, protection can be achieved by prioritizing differences in efforts to overcome the problem of bullying and by overriding criminal penalties, if diversion does not find an agreement, then specifically the perpetrators of child crimes are tried taking into account the principles contained in Law Number 11 of 2012 concerning the Juvenile Justice System. Crime prevention efforts can be divided into penal prevention (criminal law) and non eanal prevention (other than criminal law).
PERLINDUNGAN HAK KONSUMEN DALAM E-COMMERCE: PERSPEKTIF HUKUM EMPIRIS Setiawan, Hery; Alam, Moch. Ade Syukur Nur
Yuriska: Jurnal Ilmiah Hukum Vol. 15 No. 1 (2023): Februari
Publisher : Law Department, University of Widya Gama Mahakam Samarinda

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Abstract

Abstract Background: The development of modern technology is like two blades that require careful care from all angles. It cannot be denied that besides its advantages, the internet also has a number of unwanted and worrying side effects, such as pornography, fraud cases, and violent crimes, all of which originate in the online world. As a result, legal protection is needed for the rights of affected customers in e-commerce, as well as for the leakage of e-commerce consumer data. Research methods: This study uses a normative legal approach, in which the law under review conceptualizes the standards or norms adopted in society. In analyzing the problem, it is carried out by combining legal materials which are secondary data with primary data obtained in the field relating to the Protection of Consumer Rights Aggrieved in E-Commerce. Research result: Due to its cross-border nature, lack of face-to-face interaction between suppliers and customers, and reliance on online media, e-commerce is a unique type of commerce. Articles 30 and 46 of the ITE Law also provide guidelines in the event of a leak of e-commerce customer data and how legal protection can be exercised. To encourage consumer protection, Law Number 11 of 2008 concerning Information and Electronic Transactions (UU ITE) was passed. The ITE Law regulates all legal requirements for e-commerce transactions, including rights and responsibilities, torts, accountability, legal protection, legal remedies, and dispute resolution. The government needs to enact laws on personal data privacy because protecting online shoppers is not enough. Conclusion: The current positive laws (UU ITE and UU PK) are considered ineffective because consumers who are harmed by the use of their personal data for the purpose of providing benefits to certain companies are not clearly stated to be protected, so that protection against e-Trade consumer data leaks still needs to be legally strengthened by the passage of the Personal Data Protection Bill. Keywords: Legal Protection, Data Leakage, Consumers, E-Commerce. Abstrak Latar Belakang: Perkembangan teknologi modern seperti dua mata pisau yang membutuhkan perawatan yang cermat dari segala sudut. Tidak dapat disangkal bahwa selain kelebihannya, internet juga memiliki sejumlah efek samping yang tidak diinginkan dan mengkhawatirkan, seperti pornografi, kasus penipuan, dan kejahatan kekerasan, yang semuanya berasal dari dunia online. Akibatnya, perlindungan hukum diperlukan untuk hak-hak pelanggan yang terpengaruh dalam e-commerce, serta untuk pembocoran data konsumen e-commerce. Metode Penelitian: Kajian ini menggunakan pendekatan hukum normatif, dimana hukum yang ditinjau mengonseptualisasikan standar atau norma yang dianut dalam masyarakat. Dalam menganalisis permasalahan dilakukan dengan cara memadukan bahan-bahan hukum yang merupakan data sekunder dengan data primer yang diperoleh di lapangan yang berkaitan dengan Perlindungan Hak-Hak Konsumen Yang Dirugikan Di E-Commerce. Hasil Penelitian: Karena sifatnya lintas batas, kurangnya interaksi tatap muka antara pemasok dan pelanggan, dan ketergantungan pada media online, e-commerce adalah jenis perdagangan yang unik. Pasal 30 dan 46 UU ITE juga memberikan pedoman jika terjadi kebocoran data pelanggan e-commerce dan bagaimana perlindungan hukum dapat dilakukan. Untuk mendorong perlindungan konsumen, disahkan Undang-Undang Nomor 11 Tahun 2008 Tentang Informasi dan Transaksi Elektronik (UU ITE). UU ITE mengatur semua persyaratan hukum untuk transaksi e-commerce, termasuk hak dan tanggung jawab, perbuatan melawan hukum, pertanggungjawaban, perlindungan hukum, upaya hukum, dan penyelesaian sengketa. Pemerintah perlu menetapkan undang-undang tentang privasi data pribadi karena melindungi pembeli online saja tidaklah cukup. Kesimpulan: Hukum positif saat ini (UU ITE dan UU PK) dianggap tidak efektif karena konsumen yang dirugikan oleh penggunaan data pribadinya untuk tujuan memberikan keuntungan pada perusahaan tertentu tidak secara jelas dinyatakan dilindungi, sehingga perlindungan terhadap e- Kebocoran data konsumen perdagangan masih perlu diperkuat secara hukum dengan disahkannya RUU Perlindungan Data Pribadi. Kata Kunci: Perlindungan Hukum, Kebocoran Data, Konsumen, E-Commerce.
Analisis Perkiraan Umur Struktur Center Wing Box pada Pesawat Hercules C-130H Akibat Beban Lelah Aziz, Ali; Jusuf, Annisa; Rahardjo, Bambang; Putra, Ichsan Setya; Setiawan, Hery; Sugiono, Achmad
WARTA ARDHIA Vol. 48 No. 1 (2022)
Publisher : Sekretariat Badan Kebijakan Transportasi, Kementerian Perhubungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25104/wa.v48i1.442.43-52

Abstract

Failure of aircraft structural components has fatal consequences, namely the plane crash and will cause loss of life. There are many types of failures in aircraft structures, one of which is fatigue failure, which is often the leading cause of aircraft structural failures. Therefore, this study will determine the age of the center wing box (CWB) structure on the Hercules C-130H aircraft for the case of multiple-site damage crack propagation in the lower skin when experiencing fatigue loads. This research will be divided into four stages of analysis. The first stage is to determine the aerodynamic load received by the wing. Then followed by the second stage is to determine the stress distribution on the CWB structure using finite element analysis. Next, the third stage, namely making a stress spectrum based on the aircraft's flight history and analyzing crack propagation in the fourth stage. The analysis found that the maximum age of the CWB structure was 27,065 flight times or 50,070 flight hours. The age of the structure as a result of this analysis is of higher value than the statement by the aircraft manufacturing company, which is 40,000 flight hours.Kegagalan komponen struktur pesawat terbang memiliki konsekuensi yang sangat fatal, yakni kecelakaan pesawat tersebut dan akan menyebabkan hilangnya nyawa. Banyak jenis kegagalan pada struktur pesawat yang mempengaruhi keselamatan transportasi udara, salah satunya adalah kegagalan lelah (fatigue), yang seringkali merupakan penyebab utama terjadinya kegagalan struktur pesawat. Oleh karena itu, pada penelitian ini akan dilakukan penentuan umur dari struktur center wing box (CWB) pada pesawat Hercules C-130H untuk kasus perambatan retak jenis multiple-site damage di skin bawah ketika mengalami beban lelah. Penelitian ini akan terbagi menjadi empat tahap analisis. Tahap pertama adalah menentukan beban aerodinamik yang diterima sayap, kemudian tahap kedua menentukan distribusi tegangan pada struktur CWB menggunakan analisis elemen hingga. Dilanjutkan dengan tahap ketiga yaitu membuat stress spectrum berdasarkan riwayat penerbangan pesawat, dan yang terakhir pada tahap keempat adalah melakukan analisis perambatan retak. Setelah melakukan analisis didapatkan bahwa umur maksimal struktur CWB adalah 27.065 kali terbang atau 50.070 jam terbang. Umur struktur hasil analisis ini bernilai lebih besar jika dibandingkan dengan pernyataan perusahaan manufaktur pesawat terbang tersebut yaitu sebesar 40.000 jam terbang.
Development Of Two-Wheel Vehicle Security System Based On Internet Of Think Setiawan, Hery; Ariyadi, Tamsir; Ariandi, Muhamad; Paramitha, Nina
PROtek : Jurnal Ilmiah Teknik Elektro Vol 12, No 3 (2025): Protek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v12i3.9683

Abstract

Motorcycle theft and robbery have drastically increased the ease of losing motorcycles in public places, especially motorcycles that do not have more safety such as keyless in general. The current motorcycle security system still uses the key as the main security or uses additional security electronic devices such as an alarm that sounds if there is a hard touch on the motorcycle. However, security like this is not fully guaranteed that the motorcycle is safe. The problem of this research is how to design a security system based on RFID, GPS and telegram applications. The purpose of this research is to design a motorcycle security system based on RFID, GPS and telegram applications that can monitor and secure motorcycle vehicles and know the difference in distance between GPS coordinate points to facilitate detection of the location of our motorcycle and also to turn on the motorcycle electricity must scan the identity of the motorcycle owner. The research method consists of hardware and software design and testing of the RFID system, GPS testing, monitoring testing through the telegram application and testing the overall electric current. In the RFID distance test, the tag is perfectly read up to a distance of ± 3 cm with a success rate of 100%. However, at a distance of ±4 cm and above, the readings were inconsistent, and above ±5 cm, the tags were not read at all. GPS sensor testing was conducted to detect the location of the motorcycle based on latitude and longitude coordinates at several points. The difference between two points is calculated using the Euclidean distance formula, where the difference in latitude and longitude is converted into meters. For example, a 1-second latitude difference is equivalent to 30.92 meters, and a 2-second longitude difference is equivalent to 61.85 meters. By calculation, a distance difference of 69.14 meters is obtained between the two points. This shows that the GPS sensor can detect position differences with sufficient accuracy