KINERJA Jurnal Bisnis dan Ekonomi

1. REVITALISASI POTENSI SAUJANA BUDAYA KAWASAN PERDESAAN KREBET YOGYAKARTA BERBASIS PADA AKTIVITAS EKO-EKONOMI oleh Amiluhur Soeroso dan Y. Sri Susilo 2. PENGARUH GENDER SEBAGAI PEMODERASI PENGEMBANGAN MODEL PERILAKU KONSUMEN HIJAU DI INDONESIA oleh M.F. Shellyana Junaedi 3. IMPLEMENTASI DECISION TREE BERBASIS ANALISIS TEKNIKAL UNTUK PEMBELIAN DAN PENJUALAN SAHAM oleh FX. Satriyo Dwi Nugroho 4. MENJAGA VOLATILITAS NILAI TUKAR: FAKTOR PENDUKUNG PENGEMBANGAN BISNIS DI ASEAN oleh A. Ika Rahutami 5. ANALISIS PENGARUH SUMBERDAYA ORGANISASI, KEWIRAUSAHAAN, TEKNOLOGI DAN FOREX RATE TERHADAP KINERJA EKSPOR INDUSTRI TEKSTIL DAN PRODUK TEKSTIL ( TPT) INDONESIA oleh Dadjim Sinaga 6. PEMILIHAN RASIO KEUANGAN TERBAIK UNTUK MEMPREDIKSI PERINGKAT OBLIGASI: STUDI PADA PERUSAHAAN MANUFAKTUR YANG TERDAFTAR DI BEJ oleh Anna Purwaningsih 7. PENGARUH ATRIBUT PRODUK YANG DIPERTIMBANGKAN DALAM PEMILIHAN PRODUK DEPOSITO PERBANKAN TERHADAP KEPERCAYAAN DAN DAMPAKNYA PADA LOYALITAS NASABAH oleh Gunarto Suhard

The performance of Jatropha curcas Linn. Capsule Husk as feedstocks biogas in one phase anaerobic digestion

Jatropa curcas Linn. (JcL) capsule husk was not recommended as biogas feedstocks. However for biorefinery purpose, several technologies have been conducting to solve this problem. This research reported quantity and quality comparison of Dry Husk Jcl (DH-JcL) in one phase system of batch digester compare with semi continuous digester. HDPE drum of 80 L working volume used as digester with 40 days hydraulic retention time. Feeding of DH-Jcl and solvent water was mixed on concentration of 1: 8.Research conclusion showed that semi continuous digester was better than batch digester. Biogas quality showed that methanecontent can reach 66.61 % to 83.15 % and biogas quantity in semi continuous digester can reach 0.016 m3 · kg–1 DH JcL. Theresult was not in optimize condition yet because ratio number of volatile fatty acids/ alkalinity showed 0.5, it was indicatedunstable anaerobic degradation process of DH-JcL

Swelling potential of volcanic residual soils in Sumatra (Indonesia) in relation to environmental issues

Swelling potential characterization of clay-silt soil is an essential issue in stabilization, settlement, consolidation, and land suitability studies. This article attempts to explain the swelling characteristics of soils around the area of West Lampung, Lampung Province, Sumatra, Indonesia, in relation to environmental issues. An investigation in relation to the soil swelling potential was carried out using 15 disturbed soil samples collectd in the study area. The methods used were analyses of clay mineral geochemistry, physical characteristics, and the free swell ratio. These results showed that the soil in the study area was Quaternary tropical volcanic residual soil. These soils were formed in a proximal volcanic hydrothermal alteration environment. The soils of the study area have characteristics of high plasticity, a reddish-brown colour, and are clayey silt grained (MH) (USCS). The soils had loose physical characteristics in dry conditions; however, these soils tends to be plastic and sticky in wet conditions. Evidence of groove erosion was found at the soil surface. Based on XRD analysis, kaolinite, halloysite, and montmorillonite were types of clay minerals found in the soil. The soil had a clay content of 11.05–78.9%, a liquid limit value > 50%, a plasticity index value of 16.7–36.9%, a shrinkage value of 14.24–36.89%, a soil activity of 0.38–2.47; and an FSR value of 0.69–0.95. These characteristics have implications for swelling soil potential. The results showed that the soils in the study area had medium to very high swelling potential. These results suggest a risk of erosion in the area, which could cause soil degradation and a change in water quality. These soils are likely to affect land productivity and aquifer replenishment and will cause negative environmental and economic impacts. Thus, soil improvement techniques are needed. It is important to maintaining vegetative cover these soils and revegetation may be required

Prospect of Fe non-heme on coffee flour made from solid coffee waste: Mini review

Coffee flour (CF) from coffee pulp or husk, solid waste of coffee processing have launched in Canada since 2015. This product is claimed as certified of gluten-free, vegan, kosher, paleo, and non-GMO. Coffe flour is stated to contain three times Fe content than fresh spinach (Spinacia oleracea L.). Several receipts of cookies, donuts, and cakes using CF has been introduced as wheat flour substitution. However, the scientific publication of CF impact for health does not appear until August 2018 yet. A review has been carried out using data on Google with a maximum publication age of 15 yr. This Fe non-heme prospect is allegedly unable to be absorbed optimally by the organism. Coffee pulp and husk contain an inhibitor, such as caffeine, polyphenol, calcium, dietary fiber, manganese, magnesium, and zinc; which detain Fe absorption. On the other hand, the promoter/enhancer of Fe absorption such as vitamin C, vitamin A, and amino acid was decreased in CF processing. Several types of research have to be conducted to tackle this problem in Faculty of Medicine and Faculty of Agriculture and Animal Husbandry University Muhammadyah of Malang, Indonesia