Feasibility study on utilization of palm fibre waste into fired clay brick

Malaysia is the second largest of palm oil producer after Indonesia, which contribute to 50 % of palm oil production. With this demand, the increasing of palm oil plantation over the years has led to the large production of agricultural waste, for example palm fibre waste. This study investigates different percentages of palm fibre (0 %, 1 %, 5 % and 10 %) to be incorporated into fired clay brick. Manufactured bricks were fired at 1 °C/min heating rate up to 1050 °C. The effects of manufacture bricks on the physical and mechanical properties of manufactured brick were also determined. All brick samples were tested due to the physical and mechanical properties which include dry density, firing shrinkage, initial rate of suction (IRS), water absorption, porosity and compressive strength. Findings show that increasing palm fibre waste affected the properties of brick, which decreased their density, besides increased firing shrinkage, IRS, water absorption, porosity and compressive strength. However, all the manufactured brick still followed the requirement

Dukungan Sosial Keluarga Pada Pasien Hipertensi

.Kasus hypertension, including diseases with high incidence enough. Factors that cause hypertension. Those who suffer from hypertension could be saved if an early check-up and subsequently make efforts to control it. Patients with hypertension need to do regular blood pressure checks at least once a month, and then try to reduce the intake of salt, fat and exercising regularly. To prevent and control hypertension needed family support. This study aims to describe social support for families in hypertensive patients in Puskesmas Kedungwuni I Pekalongan district in 2014. Design correlative descriptive study through a cross-sectional approach. The sampling technique in this research is cluster sampling with 30 respondents. Data collection tool using a questionnaire with univariate analysis. The result showed more than half the level of social support for families in the category enough that 17 respondents (56.7%), in either category, namely 10 respondents (33.3%), and in the category of less that 3 respondents (10%). We need a social support system or family who facilitate, motivate and support a healthy lifestyle and activities that are promotive and preventive well

A New Chaotic Map for Secure Transmission

The secure communication through synchronization between two identic chaotic systems have recently gained a lot of interest. To implement a robust secure system based on synchronization, there is always a need to generate new discrete dynamical systems and investigate their performances in terms of amount of randomness they have and the ability to achieve synchronization smoothly. In this work, a new chaotic system, named Nahrain, is proposed and tested for the possible use in secure transmission via chaos synchronization as well as in cryptography applications. The performance of the proposed chaotic system is tested using 0-1 test, while NIST suite tests are used to check the randomness statistical properties. The nonlinear control laws are used to verify the synchronization of master-slave parts of the proposed system. The simulation results show that Nahrain system has chaotic behavior and synchronizable, while the equivalent binary sequence of the system has excellent randomness statistical properties. The numerical results obtained using MATLAB for 0-1 test was 0.9864, and for frequency test was 0.4202, while for frequency test within a block was 0.4311. As a result, the new proposed system can be used to develop efficient encryption and synchronization algorithms for multimedia secure transmission applications

Corrosion study of pipeline material for seabed sediment in tropical climate

Corrosive environments such as marine sediments can cause corrosion to steel pipelines at any time when certain conditions are met. Seabed sediment could cause severe corrosion damage due to its corrosiveness to the pipelines buried under it. Many consequences could take place in case if there is incident in oil/gas pipelines. Successfully identifying elements of corrosion in marine sediment would enhance the future of steel structure protection and monitoring systems. This article focuses on the behaviour of corrosion rate of steel located near shore environment and the aim is to determine the effect of sediment on corrosion of steel. To investigate that, simulated near shore sediment conditions have been used where the steel coupons buried in sediments which have different characteristics. Weight loss technique has been implemented to determine the weight loss rate of the steel specimens. Based on the results of this study, metal weight loss increases as the duration of exposure to seabed sediment environment become longer. The sea sediment simulated condition has given significant levels of corrosion. Conclusively, the corrosion rate of steel in seabed sediment located in tropical region is complicated and further studies are suggested

The performance of modified jatropha-based nanofluid during turning process

The industry's extensive use of petroleum-based metalworking fluid (MWF) harms the environment and humans. The production of bio-based MWF, especially from crude jatropha oil (CJO), has therefore taken numerous initiatives. This aimed to formulate newly modified jatropha oil (MJO) with the addition of 0.05wt.% hBN and 0.05wt.% MoS2 as the nanofluid for MWF. The performance of the nanofluids was determined through the turning process in terms of cutting temperature, workpiece surface roughness, tool life and tool wear of the tool lubricated by the nanofluids. The performance of the nanofluid samples was compared with the synthetic ester (SE). From the results, after conducted 100mm axial cutting length MJO+hBN+MoS2 recorded the lowest in cutting temperature and surface roughness compared to all samples. The result shows that MJO+hBN+MoS2 has longer tool life (6500mm) compared to SE (6000mm). Abrasion and adhesion were observed as the dominant tool wear mechanism. In conclusion, MJO+hBN+MoS2 shows better machining performance and has the potential to be an environmentally friendly metalworking fluid

Seleksi Terbuka Camat Dan Lurah Secara Terbuka Yang Dilaksanakan Oleh Pemerintah DKI Jakarta Berdasarkan Peraturan Gubernur No. 19 Tahun 2013

Terpilihnya Gubernur DKI Jakarta pada periode 2012-2017 Jokowi dodo (Jokowi) dan wakilnya Basuki Tjahaja Purnama (Ahok) sebagai Kepala daerah akan berdampak pada kebijakan-kebijakan yang diputuskan. Dalam rangka membentuk kebijakan daerah yang bertujuan untuk meningkatkan pelayanan masyarakat, Gubernur DKI Jakarta Jokowi dodo membuat produk hukum berupa Peraturan Gubernur No. 19 Tahun 2013 tentang seleksi terbuka camat dan lurah atau lebih populer dengan istilah seleksi terbuka. Berdasarkan Peraturan Gubernur No.19 Tahun 2013 Seleksi Terbuka adalah proses pemilihan yang diumumkan secara luas melalui media bagi PNS yang memenuhi syarat untuk diangkat dalam Jabatan Camat atau Lurah. seleksi terbuka memiliki sisi positif yang diharapkan membawa dampak baik pada tata kelola pemerintahan daerah di lingkungan kecamatan dan kelurahan.1 Pertama, mendapatkan outcome yang positif yaitu terangkatnya PNS yang memiliki kompetensi dan profesionalitas yang memadai sesuai dengan jabatannya atau paling tidak memiliki rekam jejak yang baik. Kedua, dengan adanya seleksi terbuka persaingan positif akan terbuka. Tentu dengan adanya persaingan mendorong semangat bagi peningkatan kualitas. Ketiga, memperkuat sistem managemen karir berdasarkan merit sistem dimana terbuka peluang yang sama bagi setiap PNS untuk meningkatkan karir berdasarkan kompetensi yang dimilikinya. Disamping itu sistem seleksi terbuka yang diundangkan Jokowi tersebut memunculkan sejumlah permasalahan

Study of Fabricated Solar Dryer of Tomato Slices Under Jordan Climate Condition

The objective of the current study was to investigate experimentally, the performance of a fabricated solar dryer under Jordan climate condition during the summer of 2013. The temporal variations of temperature difference between absorber plate and ambient temperature were obtained in the results and its influence on the performance of solar flat plate collector was examined. The effects of absorber plate temperature, ambient temperature and wind heat transfer coefficient on the top heat loss coefficient were also investigated. The results showed that the efficiency of the collector ranging between 45 to 66 % which affected significantly by the amount of solar irradiation during the day. Only top heat loss was taken into considerations, since other losses were very small and might be negligible. Also the results confirmed that the performance of collector was maximum when the difference between plate and ambient temperatures was maximum. In addition, this work presented an indirect forced convection solar dryer, which consists of solar heater, fan and drying chamber. Fan was used to force the heated air through chamber to increase the drying rate. A 500 gram of tomatoes were dried to the final moisture content 28% from 95% (w.b). The experimental moisture ratios of the tomatoes were fitted to four mathematical drying models. Comparisons between these modes are sought using statistical analysis in the results. The fit quality obtained with each model was evaluated. After the comparison with the experimental obtained values, it was concluded that polynomial equation with second order represents the drying characteristics better than the other models by indicating high value of coefficient correlation (R2= 0.999564 ) and low values of other parameters( 2= 0.000203; RMSE= 0.01011; MBE= 0.000102 ) compare with other models. The effective moisture diffusivity was estimated using Fick\u27s second law and was m2/s with an average temperature of 306 K.Article History: Received January 14th 2017; Received in revised form April 28th 2017; Accepted June 10th 2017; Available onlineHow to Cite This Article: Olimat, A.N. (2017) Study of Fabricated Solar Dryer of Tomato Slices Under Jordan Climate Condition. International Journal of Renewable Energy Development, 6(2), 93-101.https://doi.org/10.14710/ijred.6.2.93-10