Selective Laser Sintering of Polymer Nanocomposites

This paper describes the fabrication and characterization of polymer nanocomposite (PNC) materials for use in the selective laser sintering (SLS) process. PNC materials are of great interest generally because of their excellent physical properties, and offer excellent potential in rapid manufacturing of structural polymeric parts. Three different nano additive materials have been used: cerium oxide IV, yttrium stabilized zirconia, and layered Hectorite clay. These materials have been used to reinforce PA6 polymer using solution blending and spray drying to create powder with particle sizes in the range of 5-40 µm. The mechanical properties and microstructure of the PNC materials have been evaluated and the results compared to those of unfilled polymer.Mechanical Engineerin

Information of Personality Disorder as a Negative Impact of Social Media Through Infographic for Teenagers

The development of current technology makes the flow of information is speeding up. Nowadays, people have a dependency on using social media leaning to increase. Most people utilize social media for communication, socialization, or just lifestyle. From the internet, we can get everything, start from information about the recipes to personal information about someone. This is possible because a lot of people want to share personal information on social media. All easiness which obtained from social media surely helps activity in our life. It has benefited and also has a disadvantage, if we ex-ploit it excessively one of the negative effects, we can receive is a personality disorder. Most people do not recognize this negative effect from social media utilize if we ignore this personality disorder, it can directly impact teen mental develop-ment. Therefore, it needs media that can inform recognize the initial stage of personality disorder that causes by social media exploitation. The qualitative methods were used in this study, whereas the collection of data is done through observation, interview, and literature study. The outcome data processing made into a reference for displaying information content on personality disorders. Communication design theory, visual communication design, infographics, illustrations, colors, typography, and layouts are the basis for infographic media design. Infographic visualization as visual communication media can deliver the information that is able to be accessed by the teen. The research result expected to be the aid that can help teens be wiser in social media utilization and exploitation. Keywords: Personality Disorder, Infographic, Social Medi

Influence of Panchagavya foliar spray on the growth attributes and yield of baby corn (Zea mays) cv. COBC 1

Field experiments were conducted at experimental farm, Faculty of Agriculture, Annamalai University, Chidambaram during July to September (2008) and January to March (2009) in two seasons to study the effect of foliar spray of Panchagavya on the growth and yield of Baby corn cv. COBC 1. The experiments were laid out in Randomized Block Design with fourteen treatments and replicated thrice. The treatments included foliar spray and inorganic nutrient application at various stages of baby corn. The results revealed that application of 100% recommended dose of fertilizers (RDF) [N150: P60 (P2O5): K40 (K2O)] and 4 sprays (15, 25, 35 and 45 DAS) of 3 % Panchagavya recorded the highest growth attributes and yield of fresh Baby corn and this was followed by application of recommended dose of fertilizers (100 %) along with 3 sprays (15, 25 and 35 DAS) of 3 % panchagavya during both the seasons. The least growth and yield parameter were recorded in 3 sprays of 4 % Panchagavya without use of inorganic fertilizers. The increase in growth and yield of baby corn was mainly attributed by greater availability of nutrients through soil application (100 % RDF) and foliar spray of panchagavya at various stages of crop growth

Penerapan Layanan Komputasi Awan untuk Sistem Manajemen Pengetahuan pada Institusi Pendidikan Tinggi

Komputasi Awan (Cloud Computing) menjadi sebuah teknologi yang memiliki sumberdaya komputasi powerfull dapat diterapkan bagi banyak organisasi dengan penggunaan skalabilitas dinamis sebagai sumber layanan virtual melalui internet. Dengan memanfaatkan layanan aplikasi berbasis cloud yang ditawarkan oleh penyedia memungkinkan bagi pengguna untuk melakukan proses bisnis ataupun layanan sistem informasi berupa aplikasi yang dapat diakses di mana saja, kapan saja oleh pemangku kepentingan institusi pendidikan tinggi. Penerapan Sistem Manajemen Pengetahuan (Knowledge Management System) merupakan salah satu sistem informasi strategis yang dapat meningkatkan daya saing (competitive advantages) bagi institusi pendidikan tinggi. Penggunaan layanan cloud computing dapat meningkatkan efisiensi biaya dan proses pengelolaan infrastruktur TI sesuai standar strategi implementasi TI institusi pendidikan tinggi

Observations of Multiple Surges Associated with Magnetic Activities in AR10484 on 25 October 2003

We present a multiwavelength study of recurrent surges observed in H{\alpha}, UV (SOHO/EIT) and Radio (Learmonth, Australia) from the super-active region NOAA 10484 on 25 October, 2003. Several bright structures visible in H{\alpha} and UV corresponding to subflares are also observed at the base of each surge. Type III bursts are triggered and RHESSI X-ray sources are evident with surge activity. The major surge consists of the bunches of ejective paths forming a fan-shape region with an angular size of (\approx 65\degree) during its maximum phase. The ejection speed reaches upto \sim200 km/s. The SOHO/MDI magnetograms reveal that a large dipole emerges east side of the active region on 18-20 October 2003, a few days before the surges. On October 25, 2003, the major sunspots were surrounded by "moat regions" with moving magnetic features (MMFs). Parasitic fragmented positive polarities were pushed by the ambient dispersion motion of the MMFs and annihilated with negative polarities at the borders of the moat region of the following spot to produce flares and surges. A topology analysis of the global Sun using PFSS shows that the fan structures visible in the EIT 171 A images follow magnetic field lines connecting the present AR to a preceding AR in the South East. Radio observations of type III bursts indicate that they are coincident with the surges, suggesting that magnetic reconnection is the driver mechanism. The magnetic energy released by reconnection is transformed into plasma heating and provides the kinetic energy for the ejections. A lack of a radio signature in the high corona suggests that the surges are confined to follow the closed field lines in the fans. We conclude that these cool surges may have some local heating effects in the closed loops, but probably play a minor role in global coronal heating and the surge material does not escape to the solar wind.Comment: Accepted for the Publication in ApJ; 25 pages, 10 Figures, and 1 Tabl

An evaluation of the depth of similarity between linear and non-linear wave theories

An evaluation of the wave behavior and the effects of kinematics and dynamic properties of wave particles on the submerged members of a jacket platform have been accomplished. The Stokes fifthorder and Airy wave theories have been employed to evaluate the kinematics and dynamic properties of wave particles. SAP2000 software was used to determine and evaluate the wave properties. The aim of this study is to model both theories and determining a depth of water, in which both theories indicate the same behavior. The study has found that the non-linear fifth-order theory shows similar behavior with the linear Airy wave theory from 10 meters below the SWL toward the sea floor with 99% of similarity

Isolasi dan Uji Kemampuan Rizobakteri Indigenous sebagai Agensia Pengendali Hayati Penyakit pada Tanaman Cabai

. Sejumlah cendawan patogen merupakan penyebab berbagai penyakit pada tanaman cabai (Capsicum annuum L.). Oleh karena fungisida sintetik berpengaruh negatif terhadap lingkungan, akhir-akhir ini penggunaan mikroorganisme antagonis sebagai agensia alternatif pengendali berbagai jenis patogen tanaman semakin banyak diteliti dan dikembangkan. Jenis mikroorganisme tersebut ialah bakteri rizosfir nonpatogenik yang mengolonisasi perakaran tanaman, dikenal sebagai plant growth promoting rhizobacteria. Berbagai jenis rizobakteri telah banyak digunakan untuk mengendalikan penyakit, di samping untuk memacu pertumbuhan tanaman. Tujuan penelitian ialah mengisolasi rizobakteri indigenous Sulawesi Tenggara dari perakaran tanaman cabai yang dieksplorasi dari Kabupaten Konawe, Konawe Selatan, Kendari, Muna, dan Buton serta menguji kemampuan isolat tersebut untuk menghambat pertumbuhan koloni cendawan patogen (Colletotrichum capsici dan Fusarium oxysporum) di laboratorium. Dari hasil penelitian diperoleh 20 isolat rizobakteri indigenous potensial (masing-masing 14 isolat P. fluorescens, dua isolat Serratia spp., dan empat isolat Bacillus spp.). Ke-20 isolat tersebut memiliki kemampuan menghambat pertumbuhan koloni patogen target (C. capsici dan F. oxysporum) dan berpotensi dikembangkan sebagai agensia hayati pada tanaman cabai