Judul: Perancangan Mekanisme Sistem Penghisap pada Mesin Pemanen Udang dan Ikan
Abstrak: Fishery commodities have an important role in Indonesian economic. Commodity quality depends on several factors, for example harvesting process. So far, mechanism of fishery commodities harvesting is still it traditional way. Although recently there have been some mechanical shrimp harvesters, still is not widely used, not only because of the price but also the mechanical defect that becomes problem. The objective of this study is to design a vacuum system mechanism on the machine harvesters of shrimp and fish that can minimize the defect rate of harvested commodities. This vacuum system uses a reverse venturi mechanism, from a small hydraulic to a big hydraulic. The discharge during the process was relatively stable, ranging from 0.576 l/s - 0583 l/s. The most optimum combination for the positioning of inlet pipe and outlet pipe was a combination of top inlet and top outlet pipeline. It is not only affected by factors from the fluids flow itself but also by the commodity behavior. When the harvesting time occur the commodity congregate under the filter contained in the fish trap. From the performance test, the pecentage of rcommodities that were still alive was high which was 98.9%.
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Judul: Perancangan Mekanisme Hisap Vakum pada Mesin Pemanen Udang / Ikan Semi Kontinyu Tipe Vertikal
Abstrak: Products resulting from the fisheries sector is a good source of animal protein to meet the Indonesian people’s needs of nutritional and health. Some products that have a high protein value are shrimp and fish. The need for ease of getting farmed shrimp and fish in a pond increased, also include the harvesting results. Problems faced in fisheries harvesting is too much needed for resources and still lack of harvesting knowledge and skills. One way to minimize these problems is the use of mechanical harvester in harvesting pond. Another problems is that yields are still experiencing disability and high mortality rate. Design approach that taken are functional and structural design approach. From the results of the design will be carried out modeling and functional testing. Functional design is the design that has aspects related to the function and usefulness of each constituent element model of the commodities to be processed. Making models were created to test the success of harvesting systems that work in semi-continuous by vacuum suction mechanism. Because the model harvester shrimp / fish designed aiming to produce a work harvesting semi-continuous by vacuum suction mechanism. Measurements made in the form of rate water, time and speed of shrimp / fish down from the suction tank to the harvesting tank, the ratio number of the shrimp / fish in harvesting tank with shrimp / fish that are still left in the suction tank and pass rates of shrimp / fish alive. From the results obtained it can be seen the amount of shrimp that fell from suction tank to harvesting tank will vary for each time harvesting. The number of commodities that fall will be less and it could be more, depending on the time of harvesting. And the length of harvesting will make this harvester run semi-continuous.
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Judul: Dog Ticks Infestation and Its Correlation to Tick-Borne Diseases.
Abstrak: Ticks infestation on dog could lead to itchiness, anemia, skin disorders, and tick-borne diseases, such as Ehrlichiosis, Babesiosis, Anaplasmosis and Rocky Mountain Spotted Fever. Besides dogs, Ehrlichiosis were known to be zoonotic. Pre-mature stage tick life cycle that occur outside its host, will enhance contacts between ticks and human. The study of ticks infestation and tick-borne diseases on the dog is necessary, because it has not a lot of information about the diversity, prevalence and degree of ticks infestation in Indonesia. Ticks survey, included ticks sampling and dogs blood test were performed at Animal Police Directorate Security Agency (Baharkam) and Atang Sendjaja Air Force (ATS). Meanwhile ticks sampling also data of cases of ticks infestation and diseases transmitted obtained from 21 veterinary clinics in Bogor, Jakarta and Bandung. All ticks samples stored in bottles containing 70% alcohol for identification. Blood tests performed for Ehrlichiosis, Babesiosis and Anaplasmosis diagnosis. The identification results of the 950 ticks samples that obtained from 97 dogs of Baharkam, ATS and veterinary clinics in Bogor, Jakarta and Bandung, showed only one ticks species, Rhipicephalus sanguineus. This ticks belong to three-host tick, which require three hosts to complete its life cycle. Each ticks stage need a host, either same dog (if it is in place there is only one or a few dogs), as well as different dogs. Research in Baharkam conducted on 81 dogs (53 males and 28 females). The prevalence of dogs infested by ticks was 67.90%. The percentage of male dogs that infested by ticks are larger (69.81%) than female (64.29%). Based on Chi-Square test, there was no relationship between sex and breed of dog with degree of ticks infestation. Generally dogs infested with mild infestation category (41.98%), meanwhile moderate category was 18.52%, 2.47% high and 4.94% very high. The dog’s body region that the most infested by R. sanguineus was dog's back. Probably these body regions were be preferred because they are less accessible for the dog to remove them with its paws. Collection of ticks with tick-drag on Baharkam grass field showed positive results on the field that was more often used to practice by dogs. The samples that obtained was larvae stage ticks with density 152 larvae on 215m2 area of the field. Adult stage ticks and several adult females which laying eggs on the cage wall were obtained in the dog kennels. Whole of male and female ATS dogs infested with ticks (14 dogs). In general, dogs infested with very high infestation category was 64.29%, compared by high degree category (21.43%) and moderate (14.29%). Ticks predilection were found mostly on the dog’s head – neck. On ATS grass field did not reveal any ticks, but positively inside the kennels. It happens probably because dogs are rarely released from the kennel, so that the ticks was did drop-off inside the kennel. The total cases of ticks infestation of dogs at Bogor, Jakarta and Bandung veterinary clinics in 2008 until June 2013 as many as 731 cases. In general, there was an increases of the ticks infestation prevalence at three cities in that range
Keyword: Anaplasma, Babesia, Ehrlichia canis, Rhipicephalus sanguineus