Judul: Pengembangan membran selulosa asetat dengan pengadukan ultrasonik dan tambahan PLURONIC F-127
Abstrak: Membran selulosa asetat (CA) dengan PLURONIC sebagai porogen dapat digunakan untuk proses pervaporasi metanol. Membran dibuat dengan metode pembalikan fase. Larutan diaduk menggunakan pengaduk ultrasonik dengan ragam waktu pengadukan selama 10, 16, 22, dan 28 jam dan dicetak di atas pelat kaca, kemudian direndam dalam air hangat pada suhu 60 ºC. Membran dianalisis dengan beberapa parameter, seperti nilai fluks air, faktor pemisahan, dan nilai indeks pemisahan pervaporasi (PSI). Morfologi membran dianalisis dengan mikroskop elektron payaran dan spektrofotometer inframerah Fourier tertransformasi. Nilai rerata fluks air membran CA murni dan CA-PLURONIC berturut-turut pada waktu pengadukan 10 jam adalah 4.40 dan 13.33 L/m2.jam; pada 16 jam adalah 4.01 dan 13.96 L/m2.jam; pada 22 jam adalah 7.82 dan 130.69 L/m2.jam; dan pada 28 jam 3.29 dan 35.35 L/m2.jam. Membran CA dan membran CA-PLURONIC pada waktu pengadukan 10 jam mengindikasikan nilai PSI yang lebih tinggi, berturut-turut 161.30 dan 186.29. Membran CA dan membran CA-PLURONIC dengan waktu pengadukan 22 jam menunjukkan nilai PSI yang paling rendah berturut-turut 143.20 and 128.68. Oleh karena itu membran dengan waktu pengadukan 22 jam merupakan membran yang kurang baik untuk pervaporasi.
Keyword: Cellulose acetate membrane, Pluronic F-127, Methanol pervaporation, Bogor Agricultural University, Institut Pertanian Bogor, IPB

Judul: Pervaporasi Metanol Menggunakan Membran Selulosa Asetat/Polivinil Pirolidon dan Natrium Dosesil Sulfat
Abstrak: Pervaporation membrane is one of alternative methods to purify methanol. Performance of the pervaporation is affected by its characteristics. Phase inversion technique was used for preparing the membrane. The membrane was prepared by mixing polymeric solution of cellulose acetate (CA) and sodium dodecyl sulfate (SDS) as template in acetone solution. Composition of CA was 17% w/v and composition of SDS were varied 0; 0.5; 1; 1.5; dan 2% w/v. The solution was stirred by ultrasonic for 10 and 20 hours and it was casted on the glass plate surface and then submerged it into water of 60 oC. The membrane was coated by polyvinyl pyrrolidon. The performance of pervaporation was evaluated through permeation flux and separation factor and then was calculated for its pervaporation separation index (PSI) value. In this research, permeation flux and separation factor were contradicted results, but PSI was proportional to the separation factor. High permeation flux and separation factor are desired in the performance of pervaporation. The results showed that methanol concentration from pervaporation product by CA membrane with SDS 2% b/v in 20 hours stirring by ultrasonic was 79% from feed solution of 60%. Therefore, this membrane is applicable for methanol pervaporation, but it still needs some improvements.
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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