Synthetic bone as a solution for halal bone grafts implantation: demand for bone graft has been increasing steadily

The use of allografted bone substance requires several considerations: pathological clearance to ensure that the bone is free from any disease or harmful bacteria or viruses, the method is legal, allografting is an acceptable culture in the society, etc. Regarding the use of xenografts, pig bones are the most similar to human bones among pigs, mice and rats. Therefore, pig bone is usually used as a model for studyng the molecular genetics of bone-related disorder or even for xenografting. Moreover, with regard to macro- and microstructure, composition and suitability for remodeling, again pig bone is the most similar to human bone among porcine, canine, sheep, goat and rabbit

Loss of Guide Vane Disposition on Francis Turbine of Unit 6 of the Hydroelectric Power Plant PLTA

Hydropower is a power plant (PLTA) that is very environmentally friendly because it is clean and does not pollute the environment compared to other plants. PLTA, one of which is located in Bengkulu Province, is a power plant that utilizes the potential energy of water. Where the source of the water propulsion produced for the process of generating electricity is from the Tes lake which is sourced from the Air Ketahun river and the Air Pauh river, Lebong Bengkulu. Where this PLTA uses a Francis type turbine with a horizontal position. PLTA has 7 turbine units, with units 1 and 2 being old units producing 2 x 600 KW of power, while units 3 – 7 producing 5 x 4400 KW of power, so the total installed power is 23,200 KW. One of the problems that often occurs in PLTA is the occurrence of disposition of the guide vane on the turbine, where this time we will find out the cause of the disposition and how to overcome it so that there is no disposition and find out the loss of disposition of the guide vane on the Francis unit 6 turbine at PLTA. With this research done, the disposition occurs, it is necessary to take corrective action so that the unit will stop operating and can affect the level of profitability of the company. So that the results of the unit's work if it operates 24 hours are approximately 82 million rupiah, repairs are carried out for 16 hours with a loss of approximately 55 million rupiah. The occurrence of disposition is caused by damage to the transrack so that large waste enters the turbine section. In order to prevent disposition, it is necessary to repair or replace the transrack at the inlet

Optimalisasi Operasi Mesin Cetak Pelet MKS-PLT15 Menggunakan Lagrange

Bengkulu Province from Kaur Regency to Moko-Moko Regency is directly adjacent to the Indian Ocean. So that many Bengkulu residents are fishermen and farmers. Of course, with abundant natural resources, there are some fish and agricultural products that have not been utilized optimally, for example, young fish on Bai Island which are still widely discarded and milled rice bran which is very cheap. On the other hand, there is a very big problem experienced by farmers or breeders in Bengkulu Province, namely the price of fish and poultry feed is very high, thus making fish and poultry farmers unable to survive because of the high cost of feed. To reduce the production cost of making pellets, a research was carried out on optimizing the operation of the pellet molding machine Type MKS-PLT 15 with dimensions of 340 x 150 x 325 mm, the power used was 450 watts and the voltage used was 220 v / 50 Hz. The research carried out looked at the machine operation at 25%, 50%, 75% and 100%, from the results of the research that had been carried out, it was found that the 25% machine operation cost of 6mm pellet printing was 0.00762 kwh/kg or Rp. 11.021/kg, machine operation 50% production cost 0.009901kwh/kg or Rp. 14.3039/kg machine operation 75% pellet production cost 0.01235kwh/kg or Rp. 17.842/kg while the machine operation is 100% pellet production cost of 0.01084 kwh/kg or Rp. 15.6605/kg. so that from the research carried out, it was found that the operation of the MKS-PLT15 pellet machine, the low production cost, was in machine operation 0-50% of the capacity of the pellet machine's ability to operate

ANALISIS TINGKAT KEPUASAN MAHASISWA TERHADAP PELAYANAN AKADEMIK DI FAKULTAS TEKNIK UNIVERSITAS BENGKULU

Pelayanan yang prima merupakan aspek penting penentu keberhasilan komersial, terutama pada organisasi yang bergerak dalam bidang jasa. Pelayanan yang prima menjadi ujung tombak dalam menangkap peluang dan memahami konsumen atau klien yang akan menggunakan jasa yang ditawarkan. Untuk menghasilkan lulusan yang berkualitas salah satu faktor yang mempengaruhi adalah pelayanan yang diterapkan dalam lingkungan fakultas dalam melayani pelanggan dimana dalam hal ini pelanggan tersebut adalah mahasiswa. Kepuasan terhadap layanan akademik merupakan hal yang perlu diperhatikan demi mencapai layanan yang berkulaitas yang menjamin kepuasan mahasiswa sebagai stakeholder utama dalam organisasi jasa pendidikan. Penelitian ini bertujuan untuk untuk (1) mengetahui tingkat kepuasan mahasiswa terhadap kualitas layanan akademik Fakultas Teknik Universitas Bengkulu dan (2) kualitas layanan akademik Fakultas Teknik Universitas Bengkulu. Jenis penelitian ini adalah penelitian kuantitatif dengan pendekatan survey analitik, yang menggambarkan keadaan melalui analisa data primer dan data sekunder, dan data yang telah terkumpul dalam bentuk angka-angka kemudian akan dihitung menggunakan aplikasi Statistical Product and Service Solution (SPSS), dan hasil dari analisa data, kemudian diuraikan secara diskripsi untuk mengetahui sejauh mana tingkat kepuasan mahasiswa terhadap kinerja pelayanan akademik di lingkungan FT UNIB

PENGUKURAN KESALAHAN GERAK SUMBU X DAN SUMBU Z BERDASARKAN HASIL CUTTING TEST MESIN BUBUT CNC INOVASI MENGGUNAKAN COORDINATE MEASURING MACHINE (CMM)

The innovation CNC lathe is one of the machine tools with two axis. The X and Y axis are very influential in producing precision products the axis on the lathe because the axis on the lathe is as a tool for driving the chisel. To determine the precision or not of the motion of the axis, it is necessary to do a cutting test (Cutting Test) then the results of the cutting test are measured for precision using a Coordinate Measuring Machine (CMM). In the cutting test, the ISO 13041-6-M4 Series is used. In this cutting test, a radius of 50 mm is used, the test object can be reused, but the programmed radius should not be more than ± 10% of the nominal radius. The circle deviation tolerance is 0.025 mm. From the measurements made, the largest error value is 1.825056 mm in the first measurement in the CW direction, while the smallest error value is 1.824025 mm in the three-way CCW measurement, the resulting deviation continues to increase along with the cutting direction. The magnitude of the deviation, and the motion between the X-axis and the Z-axis are not collaborating with each other and not constant. This is because from the starting point of the cut on the X axis to the Z axis the deviation is getting bigger. resulting in inaccurate results from the cutting test. From the cutting test and measurements made, it can be concluded that it is necessary to make improvements to the Z axis motion

CHARACTERIZATION OF WASTE PET POWDER AS ATOMIZATION PRODUCT

A nozzle of diameter 25 cm of a closed coupled type was set at an outlet gap 0,05 mm to atomize polyethylene terephthalate plastic wastes. Parameters of pressure and heating temperature were varied into 5 bar, 6 bar and 7 bar pressures, and at 275?C, 285?C and 295?C heating. A vessel to collect the product was 40 cm diametrally away from the nozzle mouth. The products were the form of powders, yarn and liquid. The powders were only 4,77%, 6,45% and 2,94% of each heating temperature aforementioned

Low temperature hydrothermal synthesis of calcium phosphate ceramics: Effect of excess Ca precursor on phase behaviour

1492-1500Low temperature hydrothermal exchange reaction has been used to synthesize calcium phosphate materials comprising hydroxyapatite and β-tricalcium phosphate using CaO and NH4H2PO4 as calcium and phosphorus precursors respectively. The effect of excess of calcium precursor on phase behaviour of these materials has been investigated by varying CaO content (0, 10 and 20 mole% excess of 0.1 mole CaO) in the suspension. The as-synthesized paste has been dried followed by calcination at 700-1200 ºC. Results show the formation of Ca-deficient apatite at the lower calcination temperature. Excess of CaO shifts the balance to hydroxyapatite formation at the higher calcination temperature such that β-tricalcium phosphate, β-tricalcium phosphate + hydroxyapatite and hydroxyapatite of higher purity are obtained with 0, 10 and 20 mole% excess CaO, respectively