Trial of Zeolite Application for Water Purification Utilized in Crumb Rubber Processing

The research was conducted at laboratory of 2nd Crop Production, Lampung State Polytechnic using water added to zeolit in rubber processing and crumb rubber quality testing in PKST Kedaton. PTP Nusantara VII. The most important things in crumb rubber processing are water utilizing in latex dilution. Using lot of water in latex dilution can be straight away on rubber quality such as colour index, PRI, ash content, and dinginess content. The experiment was conducted on factorial method with completely randomized block design consist of two factors (4 x 5 with 3 replications. The first factor is water application (A) with A1 = well deep water, A2 = river water, A3 = fond water and A4 = latex serum. The second factors is dosage of zeolit (Z) with Z0 = without zeolit, Z1 = 2, 50%, Z2 = 5.00%, Z3 =10.00% and Z4 = 15.00% on water dilution. The result of the experiment showed that zeolit can increase pH and DHL of water, and rubber weight, but no effect on dinginess content, PO/PRI, and volatile matter. Zeolit application until 10.00% on latex serum can maintain the colour value of rubber and the other quality was not shown any different

A Study on the Quality of Natural Flavoring Powder Processed From Shrimp Waste

This research aimed to determine the quality and the application of natural flavoring powder processed from shrimp waste. This study used a non factorial completely randomized design (CRD). The treatment was addition of wheat flour, consisted of 3 level, namely: without wheat flour added (R0), added with wheat flour 1:1 (R1), and added with wheat flour 1:2 (R2) and repeated in 3 replications. The result showed that the increasing wheat flour added at different ratio was affected to the quality of the flavoring powder based on the value of taste and odor. Flavoring powder of shrimp contained 17 amino acid, consisted of 9 essential amino acids and 8 non essential amino acids. The highest content of essential amino acid was leusin amounted of 0,362% and the highest content of non essential amino acid was glutamic acid amounted of 0,913%. Odor threshold value on the powder flavor of shrimp to taste was 8% at the ratio of 1: 8. Meanwhile, odor threshold value on the aroma of shrimp flavor powders were 12% in the ratio of 1: 9. The greater the ratio of dilution was formed, the lower shrimp taste and aroma in the shrimp flavor powder, even reduced to undetectable

Theeffect of Different Cooking Process of Common Carp Fish Meat (Leptobarbus Hoevenii) on Thequality of the Fish Abon Produced

The research was aimed to determine the shelf life of common carp (Leptobarbus hoevenii) fish abon in different processing method, namely steamed and presto. The results showed that the fish abon processed by presto was more preferred by consumers compared to that by steamed. The characteristics of the appearance of the fish abon presto was colored slightly brown, the texture was fibrous rather soft, the odor was fragrant and specific fish abon, and thetaste was delicious and specific abon fish.The chemical characteristic during storagefor 30 days was containing moisture (5.63%), ash (5.58%), fat (20.61%), protein (37.55%), and calcium (3769.58 mg/100g Ca). It also contained bacteria as TPC (total plate count) (4,07 x 104 sel/gram

Stabilizing the Hexagonal Close Packed Structure of Hard Spheres with Polymers : Phase diagram, Structure, and Dynamics

We study the phase behaviour of a binary mixture of colloidal hard spheres and freely-jointed chains of beads using Monte Carlo simulations. Recently Panagiotopoulos and coworkers predicted [Nat. Commun. 5, 4472 (2014)] that the hexagonal close packed (HCP) structure of hard spheres can be stabilized in such a mixture due to the interplay between polymer and the void structure in the crystal phase. Their predictions were based on estimates of the free-energy penalty for adding a single hard polymer chain in the HCP and the competing face centered cubic (FCC) phase. Here we calculate the phase diagram using free-energy calculations of the full binary mixture and find a broad fluid-solid coexistence region and a metastable gas-liquid coexistence region. For the colloid-monomer size ratio considered in this work, we find that the HCP phase is only stable in a small window at relatively high polymer reservoir packing fractions, where the coexisting HCP phase is nearly close packed. Additionally we investigate the structure and dynamic behaviour of these mixtures.Comment: 8 pages, 5 figure

Critical Casimir Forces and Colloidal Phase Transitions in a Near-Critical Solvent : A Simple Model Reveals a Rich Phase Diagram

From experimental studies it is well-known that colloidal particles suspended in a near-critical binary solvent exhibit interesting aggregation phenomena, often associated with colloidal phase transitions, and assumed to be driven by long-ranged solvent mediated (SM) interactions (critical Casimir forces), set by the (diverging) correlation length of the solvent. We present the first simulation and theoretical study of an explicit model of a ternary mixture that mimics this situation. Both the effective SM pair interactions and the full ternary phase diagram are determined for Brownian discs suspended in an explicit two-dimensional supercritical binary liquid mixture. Gas-liquid and fluid-solid transitions are observed in a region that extends well-away from criticality of the solvent reservoir. We discuss to what extent an effective pair-potential description can account for the phase behavior we observe. Our study provides a fresh perspective on how critical fluctuations of the solvent might influence colloidal self-assembly.Comment: 4 pages, 4 figure

Penguatan Kapabilitas Badan Penanggulangan Bencana Daerah (Bpbd) Provinsi Riau dalam Penanggulangan Kabut Asap Tahun 2015

Strengthening Capabilities Regional Disaster Management Agency of Riau Province (BPBD) in tackling the haze problem in 2015. The author identifies himself as the 2015 disaster Riau province experienced tremendous smog. In addition the haze itself from 1997 is always present in the province of Riau. BPBDs itself is a government agency engaged in the disaster area have an important role in disaster management, the reality is not able to cope with this disaster. The problem of this research is How the capabilities of regional disaster management agencies Riau Province in tackling the haze in 2015 ?, and what obstacles or barriers capability of disaster management agencies in the response area of Riau Province haze in 2015 ?. INIA research purposes dalah know the capabilities of local disaster management agency Riau Province in tackling the haze in 2015 and knowing the obstacles or barriers capability of disaster management agencies in the response area of Riau Province in 2015 smog.The research method in this thesis is qualitative research. In collecting the data, researchers use interviewing techniques, observation, and documentation. By using key informants as a source of information and use some of the questions the source of information by looking at the phenomena contained in the data legally.Based on these results it can be concluded that the regional disaster management capability Agency (BPBD) of Riau Province in tackling the haze in 2015 of the four criteria of capability administrations of three criteria is not going well. While a good run capability. While the four obstacles or barriers capabilities BPBDs Riau Province in tackling the haze in 2015 can be said to fully experience all obstacles