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All Journal Teknika Jurnal Riset Mahasiswa Manajemen (JRMM) Jurnal Sains Teh dan Kina AGROVITAL : Jurnal Ilmu Pertanian Jurnal Ilmiah MEA (Manajemen, Ekonomi, dan Akuntansi)
Sugeng Haryanto
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Veterinary

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Effectiveness Comparison Between Mixture Of Carbide Waste And Aluminium Waste Upon Which Stabilization Of Ekspansive Soil Machfud Ridwan, ; Nur Andajani, ; Sugeng Haryanto,
Teknika Vol 8, No 2 (2007)
Publisher : Teknika

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Abstract

Tanah ekspansif adalah tergolong tanah yang mempunyai kemampuan untuk mengembang dan menyusut yang besar, sehingga akan sangat membahayakan apabila bangunan berdiri di atasnya. Untuk itu tanah tersebut perlu dilakukan perbaikan yaitu dengan stabilisasi tanah. Dalam penelitian ini dilakukan stabilisasi tanah ekspansif dengan Limbah Karbit dan Limbah Aluminium.Tujuan dari penelitian ini selain untuk pemanfataan limbah juga ingin mengetahui manakah yang lebih efektif dari kedua campuran tersebut apabila digunakan sebagai stabilisasi tanah ekspansif.Penelitian ini merupakan penelitian eksperimen yang dilakukan di Laboratorium Mekanika Tanah Jurusan Teknik Sipil FT- UESA. Dalam penelitian ini dilakukan 3 jenis test, yaitu test Atterberg Limit, Proctor Standart dan Swelling test. Sedangkan Jenis Campuran ada 2 macam, yaitu tanah dengan campuran Limbah Karbit; dan tanah dengan campuran Limbah Alumium. Persentase Limbah  diberikan pada masing-masing tanah adalah 0 %, 5 %, 10 %, 15 % dan 20 %. Sehingga keseluruhan benda uji ada 9 buah.Hasil yang didapat dari penelitian ini penambahan limbah Aluminium lebih efektif digunakan sebagai bahan stabilisasi pada tanah ekspansif dibandingkan dengan limbah Karbit. Limbah Aluminium 20 % yang ditambahkan pada tanah ekspansif dapat menyebabkan Potensial Swelling tanah ekspansif menurun sebesar 97.22 %, dan klasifikasi swellingnya menjadi tergolong rendah. Sedangkan limbah Karbit 20 % yang ditambahkan pada tanah ekspansif menyebabkan Potensial Swelling tanah ekspansif menurun sebesar 77.35 %, dan klasifikasi swellingnya tergolong tinggi. Ekspansive soil is inclusive of  a ground having ability for the swell and shrink of  big, so that will very dangerous if building stand up for it. For that the ground require to be a repair that is with the soil stabilization. In this research is done by stabilization of ekspansive soil with the Waste of Carbide and Aluminium Waste.Intention of this research besides for the exploiting of waste also wish to know which the more effective from second of the mixture if used as by stabilization of ekspansive soil. This research represent the experiment research done in Laboratory of Soil Mechanics of Majors of Technique of Civil FT- UESA. In this research is using by  3 testing type, that is test the Atterberg Limit, Proctor Standart and Swelling test. While Mixture Type there [is] 2 kinds of, that is soil  with the mixture of Carbide Waste; and soil with the mixture of Waste Alumium. Prosentase Waste passed to by each soil is 0 %, 5 %, 10 %, 15 % and 20 %. So that the overall of object test there [is] 9 fruit.Result got from this research is addition of Aluminium waste more is effective used as by a stabilization substance of at ekspansive soil compared to by a Carbide waste. Aluminium Waste 20 % what is enhanced at soil ekspansive can cause Potential Swelling ekspansive soil descend equal to 97.22 %, and klasifikasi swellingnya become pertained to by lower. While Carbide waste 20 % what is enhanced [at] soil  ekspansive cause Potential Swelling  ekspansive soil descecd equal to 77.35 %, and klasifikasi swellingnya pertained high
ANALISIS PEMBENTUKAN PORTOFOLIO SAHAM DENGAN MENGGUNAKAN MODEL INDEKS TUNGGAL (Studi Pada Perusahaan yang masuk dalam kelompok LQ-45 di Bursa Efek Indonesia) Erick Wisdha Eko Ibtadiyanto; Endi Sarwoko; Sugeng Haryanto
Jurnal Riset Mahasiswa Manajemen Vol. 1 No. 2 (2013): Oktober
Publisher : Fakultas Ekonomika dan Bisnis Universitas Kanjuruhan Malang

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Abstract

Penelitian ini bertujuan untuk mengetahui kombinasi portofolio saham yang masuk dalam kelompok LQ-45 dengan metode Indeks Tunggal. Penelitian ini menggunakan data sekunder yang diperoleh dari website Bursa Efek Indonesia dan www.finance.yahoo.com. Data yang digunakan dalam penelitian ini meliputi harga saham penutupan harian, indeks saham LQ-45 dan suku bunga Bank Indonesia. Sampel yang digunakan adalah saham-saham yang konsisten termasuk dalam daftar LQ-45 di Bursa Efek Indonesia selama tahun 2010-2012.Hasil penelitian  menunjukkan terdapat tujuh saham yang masuk sebagai portofolio optimal yaitu KLBF (Kalbe Farma tbk.) sebesar 16%, PGAS (Perusahaan Gas Negara tbk.) sebesar 11%, JSMR (Jasa Marga Persero tbk.) sebesar 13%, LPKR (Lippo Karawaci tbk.) sebesar 20%, SMGR (Semen Gresik Persero tbk.) sebesar 21%, INDF (Indofood Sukses Makmur tbk.) sebesar 8%, TLKM (Telekomunikasi Indonesia tbk.) sebesar 11%. Dalam penelitian ini juga menunjukkan bahwa dari portofolio yang telah dibentuk akan menghasilkan return sebesar 46,57% dengan risiko sebesar 6,72%.
LIMBAH CAIR TAHU DAN CUCIAN BERAS TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TOMAT (Lycopersicum esculentum Miil.) Indrawati Gelamona; Sofyan Samad; Shubzan A.M.; Hayun Abdullah; Sugeng Haryanto
AGROVITAL : Jurnal Ilmu Pertanian Vol 7, No 2 (2022): AGROVITAL VOLUME 7, NOMOR 2, NOVEMBER 2022
Publisher : Universitas Al Asyariah Mandar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35329/agrovital.v7i2.3687

Abstract

Tomato is a vegetable plant of the Solanaceae family that can grow in the middle plains and is about 3-4 months old. Biological, chemical and physical activities of soil with organic fertilizers. POC tofu liquid waste and rice water are given to increase production yields while reducing soil damage due to chemical fertilizers. The purpose of this study was the difference in tomato yield using tofu liquid waste POC and rice washing waste gave the best results for fruit. This study was a Randomized Block Design (RAK) with 15 experimental units consisting of 5 treatments and 3 replications. Based on the analysis of POC variance of tofu waste and rice washing waste on plant height variables, the number of primary, secondary branches, weight had a significant and very significant effect on flower and fruit variables. The results of the M2 treatment of rice washing waste produced the best results for all observation variables, namely plant height 79 cm, 2 primary branches, 13 secondary branches, 20 flowers, 14 fruits and 67 g. Rice washing waste contains elements of N, P, K and Ca which are easily absorbed by tomato plants.
Analisis kandungan teaflavin dan tearubigin pada teh hitam yang diolah melalui metode pelayuan kimia bertahap Shabri Shabri; Dr. Dadan Rohdiana; Hilman Maulana; Sugeng Haryanto; Muhammad Iqbal Prawira-Atmaja
Jurnal Penelitian Teh dan Kina Vol 21 No 1 (2018): Jurnal Penelitian Teh dan Kina
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v21i1.142

Abstract

The instability of tea shoots supply from the plantation to the factory was often a problem. In the flush season where tea shoots are abundant, an overcapacity often leads to the uncontrollable withering process. This problem was the cause of the decreased quality of black tea. Theaflavin (TF) and Thearubigin (TR) were chemical substances that positively correlated to the black tea quality. This research conducted to characterize TF and TR quality in two-stages chemical withering. This research treatment consists of two treatments, namely treatment A (plus season), treatment B (minus season), and one control/routine production (treatment C). Treatment A and B used 25 kg of fresh tea shoots to be withered, the first stage was to wither the leaves until it reached 60%, 65%, and 70% of water content. The second stage was to blended those leaves at the first stage and withered it until it reached about 54-56%. For treatment A and B, the enzymatic oxidation (fermentation) time used 90 minutes. Treatment C used 25 kg of fresh tea shot that processed as normal routine production of black tea orthodox-rotor vane process, with enzymatic oxidation time 110 minutes. Every treatment was repeated 3 times. Treatment A produced TF of 0,97% d.b and TR of 15,39 d.b. (ratio 1:15,97). And treatment C produced TF of 0,92% d.b and TR of 13,69% d.b. (ratio 1:14,82). It was concluded that two-stage chemical withering was able to maintain the chemical and organoleptic qualities of black tea.
Karakteristik nanopartikel ekstrak teh hijau dengan metode nano milling dan nano spray Shabri Shabri; Dr. Dadan Rohdiana; Hilman Maulana; Sugeng Haryanto; Muhammad Iqbal Prawira-Atmaja; Rachmat Mauludin; Muhammad Insanu; Asep W. Perdana
Jurnal Penelitian Teh dan Kina Vol 21 No 2 (2018): Jurnal Penelitian Teh dan Kina
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v21i2.146

Abstract

Nanoparticles for raw materials of phytopharmaca is a technology used to be able to increase the effectiveness and efficiency of phytopharmaca in its absorption as a therapeutic agent. This study useds steamed green tea polyphenol extract as raw material with two nanoparticle methods, first nano milling by Planetary Ball Milling (PBM) and the second using encapsulation method with Nano Spray Dryer (NSD). The characteristics of nanoparticles were then analyzed using Particle Size Analyzer (PSA) and X-Ray Difraction (XRD) to determine the size, size distribution, and type of crystals formed by the two methods. The results of PBM had not been able to meet the criteria for nanoparticles because they had a particle size that is >1 µm, whereas the NSD method produced 554.7 nm nanoparticles with an intensity of 86.9%. And the results of the XRD analysis showed that the two methods of making nanoparticles resulted in amorphous particles >50%.
Karakteritik sifat alir bubuk teh hijau yang diproses dengan metode penepung berbeda Mukhammad Iqbal Prawira-Atmaja; Sugeng Haryanto; Hilman Maulana; Shabri Shabri; Dr. Dadan Rohdiana
Jurnal Penelitian Teh dan Kina Vol 21 No 2 (2018): Jurnal Penelitian Teh dan Kina
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v21i2.147

Abstract

Recently, the public interest in green tea powder is increasing. Green tea powder is produced through the process stage: withering in hot steam, drying, and reducing size. The size reduction process on green tea powder is an important step because it will affect the characteristics of the powder flow properties. This study aims to determine the flow properties of green tea powder processed by different milling method. The milling method used are disc milling (DM) and stone milling (SM). Green tea powder was analyzed including moisture content, particle size distribution using dynamic laser scattering method, determined of bulk density (ρb), and tapped density (ρtap) to find out the Carr Index (CI) and Hausner Ratio (Hr). In addition, the lightness of color and shape and morphology of green tea powder were observed with SEM. The results showed that green tea powder produced from different milling methods have a Carr Index of 15 with “Good” flow properties. DM method produced darker green tea powder with L value (lightness) 49.91 and larger particle size (D50: 38.6 µm) compared with green tea powder produced by the SM method. Determination of flow properties of green tea powder can be applied for the utilization and development of food products and pharmaceutical products based on green tea powder.
FAKTOR-FAKTOR YANG BERPENGARUH TERHADAP KEPUTUSAN KONSUMEN DALAM MELAKUKAN PEMBELIAN SECARA ONLINE DI TOKO RAHMASASA COLLECTION PONOROGO Rima Millati; Harianto Respati; Sugeng Haryanto
Jurnal Ilmiah Manajemen, Ekonomi, & Akuntansi (MEA) Vol 8 No 3 (2024): Edisi September - Desember 2024
Publisher : LPPM STIE Muhammadiah Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31955/mea.v8i3.4612

Abstract

Belanja online telah menjadi pilihan utama bagi banyak pelanggan di era digital yang semakin maju, menawarkan kenyamanan dan aksesibilitas yang belum pernah ada sebelumnya. Namun, bengan banyaknya pilihan, penting bagi pelaku bisnis untuk memahami faktor-faktor yang mempengaruhi keputusan konsumen dalam melakukan pembelian. studi ini bertujuan untuk menganalisis pengaruh harga, kualitas produk, dan variasi produk terhadap keputusan konsumen dalam membeli secara online di toko koleksi rahmasasa, ponorogo. Pelanggan Toko Koleksi Rahmasasa diberikan kuesioner untuk diisi sebagai bagian dari pendekatan penelitian analisis kuantitatif. Temuan studi menunjukkan bahwa tiga faktor kunci sangat mempengaruhi keputusan konsumen: harga, keragaman produk, dan kualitas. Telah ditetapkan bahwa, dari ketiga hal tersebut, penetapan harga memiliki pengaruh terbesar. Hasil ini menunjukkan bahwa untuk menarik perhatian konsumen, metode pemasaran yang efektif harus mempertimbangkan harga yang kompetitif, menawarkan barang berkualitas tinggi, dan menawarkan variasi produk yang dapat diterima. studi ini memberikan wawasan berharga bagi pemilik bisnis dalam merumuskan kebijakan yang dapat meningkatkan kepuasan pelanggan dan kesetiaan konsumen di era digital.
Co-Authors Asep W. Perdana Dadan Rohdiana Endi Sarwoko Erick Wisdha Eko Ibtadiyanto Harianto Respati Hayun Abdullah Hilman Maulana Indrawati Gelamona Machfud Ridwan Muhammad Insanu Muhammad Iqbal Prawira-Atmaja Mukhammad Iqbal Prawira-Atmaja Nur Andajani Rachmat Mauludin Rima Millati Shabri Shabri Shabri Shabri Shubzan A.M. Sofyan Samad