113 research outputs found
Analisis Penerapan Prinsip Critical Non-Essentials Pada Astra Honda Authorized Service Station (AHASS) Di Kota Bogor
Problem utama yang dihadapi industri jasa adalah bagaimana mengurangi ketidaknyamanan konsumen ketika menunggu pelayanan, dan kondisi seperti ini juga dihadapi Astra Honda Authorized Service Station (AHASS) Bogor. Prinsip-prinsip Critical Non- Essentials digunakan untuk membantu dalam mengidentifikasi fasilitas penunjang yang dibutuhkan untuk membuat konsumen merasa lebih nyaman ketika menunggu sepeda motornya diperbaiki atau diservis. Tujuan penelitian ini adalah; 1) Mengidentifikasi kondisi konsumen ketika menunggu pelayanan di AHASS saat ini; 2) Menganalisis fasilitas yang dibutuhkan konsumen AHASS dengan mengaplikasikan prinsip-prinsip Critical Non-Essentials; 3) Memprediksi peningkatan Kenyamanan dan kepuasan konsumen. Sampel konsumen dari penelitian ini adalah konsumen yang datang ke AHASS dan bersedia antri menunggu pelayanan. Digunakan metode accidental sampling dalam menentukan responden yang akan menjadi sumber data atau informasi. Analisis statistik deskriptif dan tabulasi silang diterapkan untuk menentukan beberapa fasilitas prioritas utama yang dapat melengkapi yang ada, yang dapat membuat konsumen AHASS merasa senang sampai sepeda motor mereka selesai diperbaiki
Analisis Faktor Faktor yang Mempengaruhi Produksi Pembenihan Ikan Lele Dumbo (Clarias Gariepenus) di Kabupaten Wonogiri
This research are for: (1) To analysis the cost and income of Catfish hatchery farm in Wonogiri District. (2) To analysis the influence factors of Catfish hatchery production in Wonogiri District. (3) To analysis the efficiency level of feed production, natural food, and labour. The basic method of the research is description analysis method and the conduct of the research is using a census method. This research had conducted in the district of Wonogiri which consist of 45 respondents, analyzed data included hatchery income, R/C ratio, elasticity, efficiency, and multiple linier regression test. The result of the research showed that the relation between factors and hatchery of Dumbo Catfish production showed in multiple linier regression model, they are : LnP = 7.472 - 0.047LnX1 + 0.312LnX2 + 0.388LnX3 + 0.304LnX4 + 0.136LnX5 + 0.016LnX6 + 0.108LnD1 + 0.058LnD2. The result of the analysis showed the number of broodstock, feed, natural food, labour, hatchery technology and counseling which were significant influenced in Catfish hatchery production, meanwhile the land area and hatchery process were not really influences to the Catfish hatchery production. The result of the research had obtained the income of Catfish hatchery with the price of Rp. 2.369.533,-, value of R/C ratio was 2,67, feed production value, natural food, and labour were >1 which showed inefficient, the elasticity value of all independent variable was elastic
Pengaruh Komposisi Material Biokomposit dengan Matriks Polyester Berpenguat Serat Alam terhadap Kekuatan Mekanik dan Fisik
Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh komposisi serat alam dalam komposit polymer terhadap kekuatan lentur dan densitas dari biokomposit dengan matriks polyester berpenguat serat rami, serat bambu betung, dan serat tebu. Dilakukan pengujian mekanik berupa pengujian kekuatan lentur dan melakukan perhitungan densitas sebagai pengujian fisik. Komposisi matriks dengan penguat seratnya diatur sebesar 70% polyester dan 30% serat alam. Sebagai varibel yang digunakan pada penelitian ini adalah membuat dominasi komposisi jenis serat dalam bentuk jumlah berat yang yang terukur sehingga menghasilkan perbandingan jenis serat alam mana yang mempunyai nilai pengujian yang lebih baik. Dari hasil pengujian kekuatan lentur didapat bahwa biokomposit dengan dominasi serat tebu mempunyai nilai kuat lentur terbesar dengan 261,66 kg/cm2 sedangkan biokomposit yang didominasi rami dan bambu secara berurutan menghasilkan kuat lentur sebesar 101,465 kg/cm2 dan 185,89 kg/cm2 . Hasil perhitungan densitas menunjukkan densitas tertinggi dicapai oleh material biokomposit dengan dominasi komposisi serat rami ( 70% Polyester : 20% Serat Rami, 5%Serat Bambu 5%Serat Tebu) sebesar 1,049 g/cm3
Formula Optimization Of Lozenges Containing Alpinia Galanga (L.) Stuntz Rhizome Extract With A Combination Of Mannitol And Sucrose Sweeteners Using Simplex Lattice Design Method
Galangal (Alpinia galanga (L.) Stuntz) has many benefits for the health. Galangal is used as a tonic traditionally, but the dose is unknown, so it is necessary to be formulated. Lozenges was selected for the formulation of galangal because its practical and comfortable form. Taste is an important parameter for the lozenges so a mixture of mannitol and sucrose are used in this formulation. This research aims to optimize the lozenges formulation using a mixture of mannitol and sucrose with Simplex Lattice Design method. Galangal rhizome was extracted by maceration using 70% ethanol. Lozenges were made in three formulas, Formula A (100%: 0%), Formula B (50%: 50%), and Formula C (0%: 100%) with SLD in wet granulation method. Granule mass was sieved through the sieve no. 10 and dried in an oven at 60°C, then dried granule was mixed homogeneously with magnesium stearate-talk and tested for its physical properties include flow rate and compactibility. The granule was compressed into tablets and tested for its physical properties, including weight uniformity, hardness, friability, dissolving time, and tasting test. The data which was obtained were used to create a profile of physical properties of the granule and the taste of the tablet. Optimum formula was selected based on the highest total response. The tablet was created based on the optimum formula and tested physical properties of granule and tablets. The data was obtained and compared theoritically and statistically using the T-Test. The result showed that optimum formula of galangal rhizome extract lozenges is a formula with ratio 25% maintol : 75% sucrose. The optimum formula of the flow rate and granule compactibility and significantly different between verification and SLD calculations, while the dissolved time and the respon of tablets flavor are not significantly different. The dominant composition of sucrose can increase granule's compactibility response, dissolving time, and tasting test of lozenges, lowering the response speed of the flow of granules
Bacterial Cr (VI) Reduction and Its Impact in Bioremediation
Chromium is hazardous pollutant for ecosystem caused chromium especially inhexavalent form is very toxic, has high solubility and mobility, teratogenicity, mutagenicity andcarcinogenicity to living system related with its oxiding power. Remediation of soilcontaminated of heavy metals was important caused soil as medium for food producing.Conventional methods for heavy metals remediation consist of physical and chemical processbut these applications were costly and less effective. One of the remediation technologies is theusing living organisms such as microorganisms, because they have ability to reduce Cr(VI) intonon toxic form, Cr(III). The aims of this research were to evaluate the reduction activity ofrhizobacterial isolate and to identify the isolate which take a role in reducing chromiumabsorption by plant. The results showed that Isolate 39 was able to grow on LB mediumcontaining 200 ppm Cr(VI). Isolate 39 reduced Cr(VI) up to 15 ppm concentration level inminimal medium. Isolate 39 has ability to reduce Cr(VI) both at growing cells and resting cellsconditions up to 100% and 51% within 18 hours, respectively. Isolate 39 increased thephytostabilization ability of chromium by Zea mays at 30 days after seeding 3.8 timescompared than control. Based on physiological characteristics and partial sequencing of 16SrRNA gene, Isolate 39 was identified as Agrobacterium sp
Temporal Distribution of Sediment Yield From Catchments Covered by Different Pine Plantation Areas
Soil erosion and sedimentation are environmental problems faced by tropical countries. Many researches on soil erosion-sedimentation have been conducted with various results. Quantifying soil erosion-sedimentation and its temporal distribution are important for watershed management. Therefore, a study with the objective to quantify the amount of suspended sediment from catchments under various pine plantation areas was conducted. The research was undertaken during 2010 to 2017 in seven catchments with various percentage of pine coverage in Kebumen Regency, Central Java Province. The rainfall data were collected from two rainfall stations. A tide gauge was installed at the outlet of each catchment to monitor stream water level. The water samples for every stream water level increment were analyzed to obtain sediment concentration. The results showed that monthly suspended sediment of the catchments was high in January to April and October to December, and low in May to September. The annual suspended sediment fluctuated during the study period. Non-linear correlations were observed between suspended sediment and rainfall as well as suspended sediment and percentage pine areas. The line trend between suspended sediment and percentage of pine areas showed that the increase in pine areas decreased suspended sediment, with the slope of the graph is sharp at the percentage of pine areas from 8% to 40%, then is gentle for pine plantation areas more than 40%
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