Magnesium (Mg) and its alloys has a potential for the application for bone implant material as it’s biocompatibility and mechanical properties that fit to natural bone. Mechanical properties of magnesium alloy may close to human bone once it composed and produced in a specific production route. Mechanical properties of Mg alloy may close to cancelluos bone. Fabrication of porous magnesium for bone scaffold material aims to reduce the rigidity and strength of the material with density that can be adjusted to the original nature of the bone. It forms interconected porosity, has physical and mechanical properties similar to cancelluos bone. In this paper we describe the production and characterization of porous magnesium material for the potential application as bone scaffold through powder metallurgy technique with pieces of Titanium wire space holder. Mg containing titanium pieces then compacted and sintered before immersed in hydrofluoride acid solution to form a porous structure of magnesium. Density and porosity, micro vickers hardness, micro structure test was performed to prove the evidence of porous structure inside the Mg metal. This results finds a good cooperation and has a potential application for the fabrication of an inter-connected porous magnesium samples for cancellous bone implant.Keyword: Porous Magnesium, cancellous bone, implant, bone scaffold, titanium wire

This paper will describe complete investigations of the analysis anchor strength for mooring of a floating breakwater in Senoro Field. The terminal has berthing facilities located in a water depth about 30 meters, with the wave height of 2.7 meters that made difficult for tanker to berth properly. The requirement for berthing ships must have minimum wave heights of 0.7 meters to 1.5 meters as a requirement [1]. Considering the previously mentioned, a floating breakwater has suggested for reducing wave height. The purpose of this final project is to determine the tension mooring line and anchor pile strength to withstand all possible working loads. Response amplitude operator (RAO) of floating breakwater is used to find the structure characteristic as a response due to wave action. Based on the study, wire rope mooring was chosen due to its safety factor passed API RP 2SK standard, such as the biggest tension is 1389,68 kN on line 1 and the smallest is 1157,72 kN on line 8. Calculate anchor pile strength with three types: spun piles, spun square piles, and triangular piles. Anchor pile could be installed depending on three main factors, uplift capacity, bearing capacity and pile in compression. Based on the analysis, uplift capacity result for pile F is 1960.1 kN, while uplift load result is 1958.47 kN, and pile in compression result is 4155 kN while allowable compression result is 5532 kN. For pile G, uplift capacity result is 1960.7 kN, while uplift load result is 1958.47 kN, and pile in compression result is 4599 kN, while allowable compression result is 7189 kN.

Electrical energy is needed and continues to increase in line with the population and economic growth, including in Lampung Province. Problems may occur once happen the rotating power outages, in this case the community uses candle or kerosene lamps. The use of candle or kerosene lamps may cause danger due to the combustion gas produced and a potential of fire. Therefore, it is necessary to make efforts to produce alternative energy sources in energy renewal, one of which is to build a salt water electrical energy source using the sea cell method, to build an energy independent village. Electricity through electrochemistry is one of the alternative electrical energy that can be generated by utilizing an oxidation-reduction process in which an electrochemical cell with a pair of Cu(Ag)-Zn electrodes is used. The electrodes are made of Cu fibers with a length of 2 m per strand as many as 25 strands and a Zn plate with dimensions of 10 cm long and 3.5 cm wide. Cu is coated with Ag metal using the electroplating method, while Zn metal is protected with Mg metal as a sacrificial anode. The electrical energy produced from this lamp is expected to be applied as renewable energy in a sustainable manner. The University of Lampung has a very good relationship with Ekoharjo village in Central Lampung district of Lampung Province.

The medical device market in Indonesia experiences growth every year, Indonesia implements imports of medical devices. Indonesia has many experts in the field of medical devices and their production processes, at university, research institutions and other government institutions. The government provides multi-year grants for research on biomaterials and medical devices. Materials to make medical devices are called biomaterials. Biomaterials can be defined as synthetic materials that interact directly with living bodies in the form of implants or as medical devices. Biomaterials can function to repair, replace, support and or restore parts of the human body. Biomaterials have undergone many developments, types of biomaterials, advanced biomaterials adapted to applications in the medical field. Biomaterials can be in the form of metals, ceramics, polymers or composites with research that continues to advance and be developed. This paper aims to highlight types and application of biomaterials in the medical field as well as the potential application of advanced biomaterials in the future.

Plat tulang berbahan logam merupakan implan ortopedi yang sangat sering digunakan karena sifat mekaniknya yang kuat. Penelitian ini bertujuan untuk melakukan analisis elemen hingga (FEM) berbasis data uji tekuk tiga titik sesuai standar ASTM F382-99. Dimensi plat yang digunakan adalah 120 mm x 14 mm x 5 mm (panjang x lebar x tebal) dan memiliki 6 dan 10 lubang baut. Beban yang diberikan pada analisis plat sebesar 986,89 N serta ukuran elemen 0,55 mm. Elemen hexahedron memiliki jumlah total elemen 62.179 untuk 6 lubang dan 62.960 elemen untuk 10 lubang. Selanjutnya, jumlah total elemen tetrahedron adalah 63.609 elemen untuk 6 lubang dan 64.822 elemen untuk 10 lubang. Perhitungan FEM untuk plat dengan 6 lubang dan 10 lubang menggunakan elemen hexahedron masing-masing menghasilan total deformasi 6,1963 mm dan 6,7852 mm. Selanjutnya, elemen tetrahedron untuk plat dengan 6 lubang dan 10 lubang menghasilkan total deformasi masing-masing sebesar 6,1762 mm dan 6,7651 mm. Berdasarkan data di atas, dapat disimpulkan bahwa perhitungan FEM untuk sampel plat tulang menggunakan elemen hexahedron lebih akurat dibanding tetrahedron.