Aplikasi Fosfin Formulasi Cair Terhadap Thrips Parvispinus Karny (Thysanoptera: Thripidae) Pada Bunga Potong Krisan

Chrysanthemum (Chrysanthemum indicum) as one of horticultural commodities has a good prospect to be developed as source of country revenue. The export of cut flowers of chrysanthemum from Indonesia tends to increase year by year. However, Thrips parvispinus Karny (Thysanoptera: Thripidae) which is major insect pest of chrysanthemum often attacks this flower in the field until postharvest causing the decrease of quality of flowers. The poor quality of cut flowers of chrysanthemum including the presence of T. parvispinus will be rejected by foreign businesses. Therefore, control measures of this insect pest by quarantine officers are important. Treatment can be done using liquified formulation phosphine fumigant. The objectives of this study were to determine the concentration of liquified formulation phosphine and exposure time which will were effectively kill T. parvispinus and to evaluate the quality of cut flowers of chrysanthemums treated with phosphine fumigant. T. parvispinus was exposed to liquied formulation phosphine at 9 concentrations (0, 25, 50, 75, 100, 125, 150, 175 and 200 ppm) with 3 exposure times (1, 3, and 6 hours). Moreover, validation test of concentration nd exposure time of liquified formulation phosphine on cut flowers of chrysanthemum was conducted to evaluate the quality of chrysanthemum cut flowers of treated with phosphine fumigant. Results showed that liquified formulation of phosphine at concentration of 200 ppm and on 1 hour of exposure time completely killed T. parvispinus by 100% mortality. At 200 ppm and exposure time until 6 hours did not affect the quality of cut flowers of chrysanthemum

Wettability Alteration Induced by Surface Roughening During Low Salinity Waterflooding

Wettability alteration during low salinity waterflooding (LSW) is expected to be one of the prominent reasons for enhanced oil recovery. However, the underlying mechanisms of improved oil recovery in sandstone during LSW are not entirely clear. Thus, a series of experiments was carried out to investigate the underlying mechanisms that drive the wettability alteration. FTIR spectroscopy was combined with thermogravimetric analysis to quantify the amount of adsorbed hydrocarbon components in sandstone with various clay contents. Afterward, the time-dependent contact angle in fabricated sandstone substrate (RMS roughness 9.911.31) was observed with various clay and brine contents to monitor the wettability alteration during LSW. The existence of divalent ions (Ca2+ and Mg2+) was found to stabilize the sandstone and prevent it from swelling. Surprisingly, with the presence of divalent ions, the rate of contact angle change was insignificant (, even though a reduction of divalent ions occurred and the rate of contact angle change with the sole presence of NaCl was notably altered (. Furthermore, the presence of higher clay content showed an increased contact angle alteration. We propose that these phenomena are partially driven by macroscopic phenomena of clay swelling, which leads to surface roughening and enhances the water-wetness

Life Cycle Assessment Pabrik Semen PT Holcim Indonesia Tbk. Pabrik Cilacap: Komparasi antara Bahan Bakar Batubara dengan Biomassa

PT. Holcim Indonesia Tbk. Pabrik Cilacap dengan kapasitas produksi 2,6 juta ton/tahun telah menggunakan sekam padi sebagai energi alternatif biomassa. Penggantian batubara dengan biomassa akan menimbulkan emisi dan dampak ke lingkungan. Penelitian ini bertujuan untuk mengevaluasi dampak lingkungan penggunaan batubara dan biomassa dengan menggunakan metode Life Cycle Assessment (LCA). Pendekatan cradle to gate digunakan untuk mengevaluasi 4 skenario penggunaan bahan bakar: (1) 100% batubara, (2) campuran 90% batubara dan 10% biomassa, (3) campuran 50% batubara dan 50% biomassa, (4) 100% biomassa, dengan basis 1000 kg produk semen. Langkah-langkah evaluasi mengacu pada ISO 14040 tahun 2006 yang terdiri dari: (1) pendefinisian tujuan dan ruang lingkup, (2) analisis inventori, (3) analisis/penakaran dampak, (4) interpretasi. Hasil analisis kontribusi dampak terhadap lingkungan dengan skenario 1, 2, 3, dan 4 diperoleh nilai kontribusi total berturut-turut 2,78 x10-1 Pt, 2,24 x10-1Pt, 1,57 x10-1Pt, dan 8,50 x10-2 Pt. Kategori dampak global warming, respiratory inorganic dan resources merupakan kontributor terbesar dari total dampak terhadap lingkungan. Analisis perbaikan dan rekomendasi mengurangi dampak yang terjadi yaitu mengganti angkutan truck pasir silika dengan kereta api, bahan bakar biomassa menggunakan miscanthus giganteus dan melakukan penghijauan. Kata kunci : PT Holcim Indonesia Tbk. Pabrik Cilacap, Life Cycle Assessment, Komparasi batubara dengan biomassa PT. Holcim Indonesia Tbk. Cilacap having capacity of 2.6 million ton/year uses rice husk as alternative fuels. The utilization of the rice husk will effect the environment. The aim of the study is to evaluate the effects of biomass utilization to environment using life cycle assessment (LCA) method. The “cradle to gate” approach was used to evaluate four scenarios of different fuel combinations: (1) 100% coal, (2) mixed fuel of 90% coal and 10% biomass, (3) mixed fuel of 50% coal and 50% biomass, (4) 100% biomass as primary fuels in the kiln for 1000 kg cement. Evaluation of environment impact related to each scenario was using ISO 14040 (2006) that consists of: (1) goal definition and scoping, (2) inventory analysis, (3) impact assessment, and (4) interpretation. Results showed by contribution analysis, the scenario 1, 2, 3, and 4, give 2.78 x10-1 Pt, 2.24 x10-1Pt, 1.57 x10-1Pt, and 8.50 x10-2 Pt respectively. It was also found that the global warming, respiratory inorganic and resources give significant impacts to the environment. It is suggested to replace silica tranportation using train, to utilize miscanthus giganteus and to grow plants or reforestry. Keywords: PT Holcim Indonesia Tbk Cilacap Plant, Life Cycle Assessment, Comparative Coal with Biomass

Studi Komparasi Sifat Fotokatalis Dan Aglomeritas Nanopartikel Tio2 Sebagai Pengaruh Dispersant Etilen Glikol Dan Triton X 100 Dalam Dirt-free Paint

Telah dilakukan penelitian untuk mengetahui pengaruh variasi dispersant terhadap stabilitas fotokatalis dan aglomeritas nanopartikel TiO2 sebagai optimasi dirt-free paint, yaitu bahan komposit cat yang mempunyai sifat anti noda dan mampu membersihkan dirinya sendiri (self-cleaning) dengan bantuan cahaya dan air. Dispersant yang digunakan Etilen Glikol dan Triton X 100. Komposisi massa TiO2 2% massa cat, dengan perbandingan anatase : rutile sebesar 90:10. Pengujian yang dilakukan meliputi uji DSC, XRD, FTIR, uji self-cleaning, dan SEM-EDX. Dari uji self-cleaning dengan dua macam pengotor, diperoleh hasil bahwa untuk pengotor lumpur, sampel terbaik adalah sampel dengan dispersant Etilen Glikol, dengan selisih luas pengotor 35,77%. Untuk pengotor pewarna makanan, sampel TiO2 dengan dispersant Triton X 100 memiliki selisih luas pengotor 17,64%. Hasil uji SEM-EDX menunjukkan ukuran partikel TiO2 rata-rata untuk cat tanpa dispersant adalah 132.02 nm, dan dengan dispersant Etilen Glikol menjadi 118.54 nm. Hasil pengujian menunjukkan bahwa bahan dispersant dapat menimbulkan sifat self cleaning, serta mampu mendispersikan TiO2 di dalam cat dengan baik

Mapping ergonomics application to improve SMEs working condition in industrially developing countries: a critical review

In industrially developing countries (IDC), small and medium enterprises (SMEs) account for the highest proprotion of employment. Unfortunately, the working conditions in SMEs are often very poor and expose employees to a potentially wide range of health and safety risks. This paper presents a comprehensive review of 161 articles related to ergonomics application in SMEs, using Indonesia as a case study. The aim of this paper is to investigate the extent of ergonomics application and identify areas that can be improved to promote effective ergonomics for SMEs in IDC. The most urgent issue found is the need for adopting participatory approach in contrast to the commonly implemented top-down approach. Some good practices in ergonomics application were also revealed from the review, e.g. a multidisciplinary approach, unsophisticated and low-cost solutions, and recognising the importance of productivity. The review also found that more work is still required to achieve appropriate cross-cultural adaptation of ergonomics application. Practitioner Summary: Despite continuous efforts in addressing ergonomics issues in SMEs of IDC, workers are still exposed to poor work conditions. We reviewed factual-based evidence of current ergonomics application to inform future strategies of ergonomics in IDC, using Indonesia as a case study

Berbagai kesenian sasak samawa mbojo

Buku berjudul “Berbagai Kesenian Sasak Samawa Mbojo”, berisi tentang ragam dan rupa kesenian tiga suku di NTB yang lahir dan mengakar dalam komunitas masyarakat pendukungnya masing-masing yang turut pula memperkaya khasanah kesenian nasional. Penulisan buku ini dilakukan untuk mencatat kembali, seni-seni berupa ragam tarian, musik, teater serta sastra tradisional yang pernah ada sebagai identitas bagi ke tiga suku tersebut

Risiko Pembiayaan Modal Kerja di Bank Jatim Syariah

The results showed that the risk management process of working capital financing at Bank Jatim Syariah consists of risk identification, risk analysis, risk control and risk evaluation. The main risks in working capital financing are credit risk, reputation risk, and liquidity risk. Bank Jatim Syariah mitigates credit risk by analyzing risk using six methods of Bank Jatim Syariah analysis, which are management analysis, financial analysis, character analysis, facility analysis, business environment condition analysis and collateral analysis or guarantee. After conducting this analysis, Bank Jatim Syariah uses 3R control, which is rescheduling, restructuring and reconditioning

Analisis Profil Konsumen Co-working Space Puco Rooftop Bali Menggunakan Peta Empati

Tujuan dari penelitian ini adalah untuk menganalisis dan mengidentifikasi profil konsumen Co-Working Space PUCO Rooftop. Penelitian ini memfokuskan kepada konsumennya dimana ingin mengetahui apa yang benar-benar dibutuhkan, diinginkan, dan dipikirkan oleh konsumen. Profil konsumen merupakan suatu cara agar lebih mempermudah perusahaan untuk menentukan siapakah segmen konsumen yang akan dilayani, menentukan bagaimana cara agar nilai yang dibuat sesuai dengan kebutuhan calon konsumen tersebut dan perusahaan bisa menyampaikan nilai secara efektif yang dimiliki untuk memenuhi kebutuhan konsumen tersebut. Metode penelitian yang digunakan pada penelitian ini yaitu metode penelitan deskriptif kualitatif yang melibatkan tiga informan atau narasumber yang merupakan member dari PUCO Rooftop. Teknik samplingnya yaitu purposive sampling, sedangkan untuk teknik pengumpulan data yaitu dengan metode wawancara yang menggunakan triangulasi sumber. Pada penelitian ini data narasumber diolah menggunakan tools Peta Empati yang terdiri dari terdiri dari See, Hear, Think & Feel, Say & Do, Pain, dan Gain. Peta empati dapat digunakan sebagai alat dalam menganalisis profil konsumen karena peta empati dapat menganalisis profil konsumen berdasarkankan pendekatan internal konsumen yang menjadi target dari pembagian indera-indera yang biasa digunakan oleh konsumen untuk memenuhi keinginannya mendapatkan produk sesuai harapan. Hasil dari penelitian ini yaitu bahwa dapat disimpulkan profil konsumen PUCO Rooftop yaitu ketertarikan akan harga yang murah dengan fasilitas yang memadai, temap yang memiliki design menarik dan juga memiliki suasana yang bisa memberikan ketenangan agar para member dapat melakukan pekerjaannya dengan lebih fokus. Kata kunci : Profil konsumen, Peta Empati, dan Co-Working Spac