Judul: Rancang bangun dan pemanfaatan programmable logic controller (PLC) untuk pengendalian budidaya tanaman secara hidroponik
Abstrak: Programmable logic controller merupakan suatu bentuk pengendali yang dapat diprogram untuk berbagai keperluan, prinsip dasar dari cara kerja PLC adalah dengan menyambung atau memutus aliran listrik kepada suatu instrumen. Pada penelitian ini akan merancang dan menguji kemarnpuan PLC dalam menangani multi input dan multi output (MIMO). Tugas yang diberikan adalah mengendalikan keasaman larutan nutrisi sesuai dengan rentang (selanjutnya akan disebut set point) nilai keasarnan yang ditetapkan, apabila larutan nutrisi dibawah set-point atau diatas set point maka akan diambil tindakan yang sesuai pada program. Jika nilai keasaman yang terukur sebesar 5,257 maka akan dikoreksi dengan membuka katup selenoid larutan basa sebanyak 75 kali sampai nilai keasaman tersebut menjadi 6,017 sesuai set point yang ditetapkan 6,000-6,500. Dan jika nilai keasaman larutan yang terukur 6,755, maka akan dikoreksi dengan membuka katup selenoid asam sebanyak 23 kali sehingga nilai keasaman larutan menjadi 6,505. Dalam
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Judul: Rancang Bangun dan Uji Teknis Sistem Kendali Berbasis PLC ( Programmable Logic Controller) pada Jaringan Irigasi Tetes Hidroponik Substrat untuk Bcrbagai Jenis dan Umur Tanaman
Abstrak: Dalam situasi krisis ekonomi seperti sekarang ini. sektor pertanian merupakan sektor yang mempunyai prospek yang lebih baik dibandingkan dengan sektor lain dan masih potensial untuk dikembangkan (Sugiyono, 1998). Pengontrolan secara otomatik dalam pelaksanaan irigasi tetes di dalam greenhouse pada tanaman hidroponik sangat membantu operator. Sistem otomatisasi dalam pelaksanaan irigasi tetes yang dapat mengontrol input dan output yang banyak dengan satu mekanisme pengontrolan salah satunya adalah menggunakan Programmable Logic Controller (PLC) yang biasa digunakan dalam bidang industri. Tujuan penelitian ini adalah untuk merancang dan melakukan pengujian secara teknis sistem kendali otomatis dengan PLC pada pemberian nutrisi jaringan irigasi tetes hidroponik substrat untuk berbagai jenis dan umur tanaman. yaitu tanaman mentimun (Cucumis sativus L.), dan tomat (Lycopersion esculentum Mill.) yang dibedakan pada umurnya. Penelitian mengenai sistem pengendalian muka air tanah dan kelembaban media tanam sudah banyak dilakukan. Ada beberapa macam sistem kendali yang digunakan. diantaranya sistem fuzzy yang diteliti oleh Priyatna (1998), sistem on-off dengan peraga digital oleh Setiawan, B.l (1983), tipe on-offunmk irigasi oleh Patappa, A.M (2001), serta tipe on-off berbasis PLC (Programmable Logic Controller) oleh Fardiani. Yani T. (2002).
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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