Judul: Modifikasi Penukar Panas Model Pengering Hybrid Tipe Rak untuk Pengeringan Chip Mocaf
Abstrak: The main problems of previous experiment using rack type greenhouse effect dryer (GHE) equipment were low level of drying efficiency and high level of energy consumption, therefore the purposes of this experiment were to develop the design of heat exchanger and biomass stove from rack type GHE dryer and to develop the performance of hybrid rack type GHE dryer for drying mocaf chips. One of the developments of the design was the addition of circle type fins on heat exchanger as much as 9 fins per pipe. The dimension of each fin was 0.093 m x 0.063 m. Materials of the stove were bricks by dimension of 0.58 m x 0.58 m x 0.3 m (L x W x H). The drying experiment during daylight period using mocaf chips with capacity of 18.04 kg from moisture content of 69.88%db to 12.56%db needed 11.5 hours with drying temperature of 43.65C. The drying efficiency was 9.37%, thermal efficiency was 24.84% and specific energy consumption was 28.19 MJ/kg vapor. In the experiment capacity of 18.09 kg mocaf chips during daylight and night period from moisture content of 70.74%db to 13.76%db required drying time of 15 hours with drying temperature of 45.83C, drying efficiency was 6.79%, thermal efficiensy was 24.32%, and specific energy consumption was 32.80 MJ/kg vapor. This research resulted increased efficiency of 1.697% than previous design.
Keyword: Bogor Agricultural University (IPB), efficiency, stove, fin, mocaf chip

Judul: Rancang bangun dan Uji Kinerja Pengering  Singkong Efek Rumah Kaca (ERK)-Hibrid Tipe Rak dengan Turbin Ventilator untuk Sirkulasi Udara
Abstrak: Cassava is the fourth leading commodity after rice, wheat and corn. Market demand and high productivity of cassava make it as one of the potential export commodities. In case for export or industrial use fresh cassava must be processed first into semi-finished materials for added value. It will be better if the added value is left to the farmer. For the purpose, the farmer needs to be furnished with proper and affordable technology. This study aims to design, construct and testing a dryer which apply the principle of greenhouse effect by additional heating of biomass furnace. Dryer is designed with a capacity of 180 kilograms cassava from 65% wb moisture content up to 13% wb moisture content. Drying chamber has dimensions of 2 m x 1.5 m x 2.4 m (L x W x H) with 30 shelves. This dryer has a cross flow type heat exchanger and regulating the circulation of air using a turbine ventilator. On testing with the full capacity, the dryer can dried up 180 kg cassava chips from 61.31 %wb (158.53 %db) moisture content to 9.87 %wb (11.01 %db) moisture content. On these test the dryer has a total efficiency of 18.3%, energy share of solar energy 7.72% and biomass 92.28%, drying time is 49 hours at a rate of 4.50 %db/h. While testing with half capacity, was dried 95 kg cassava chips from moisture content of 69.47%wb (232.26 %db) to 8.81 %wb (9.67 %db), the total efficiency of the dryer was 14.84% with the share of energy from solar energy 7.31% and 92.69% of the biomass, drying time required is 28 hours with the drying rate 8.56 %db/h.
Keyword: 

Judul: Prevalensi Penyakit yang Disebabkan oleh Parasit Darah pada Anjing di Companion Veterinary Clinic, Melaka, Malaysia.
Abstrak: A disease caused by canine blood parasites (tick-borne diseases), is a condition when dog is bitten by a tick carrying pathogen. The aim of this study is to assess the prevalence of diseases caused by canine blood parasites (Anaplasmosis, Babesiosis and Ehrlichliosis) at Companion Veterinary Clinic, Melaka, Malaysia from August 2020 to July 2022. Secondary data of 103 infected dogs were taken from the medical record. Dogs at their puppy stage were more commonly diagnosed at 26.21%. Both males and females show almost same prevalence which is 52.43% and 47.57% respectively. Mongrel have a relatively higher prevalence compared to pedigree dogs but there is no breed predisposition. Multiple infections cases are more common than single infection cases. Canine tick-borne diseases show higher prevalence between intermonsoon season in Malaysia. The most common clinical signs shown by dogs are anorexia, inactivity and bleeding diatheses. For supporting diagnosis, anemia and thrombocytopenia can be observed from the patients’ complete blood count results, test kit will show positive when antibodies or antigens are detected and parasites can also be observed under microscope using blood smear. Prevalence of tick borne diseases will be influenced by both intrinsic (age, sex) and extrinsic factors (weather)., Penyakit yang disebabkan oleh parasit darah pada anjing (penyakit kutu) adalah kondisi akibat anjing yang digigit oleh patogen pembawa kutu. Tujuan dari penelitian ini adalah untuk menilai prevalensi penyakit yang disebabkan oleh parasit darah anjing (Anaplasmosis, Babesiosis dan Ehrlichliosis) di Companion Veterinary Clinic, Melaka, Malaysia dari Agustus 2020 hingga Juli 2022. Data sekunder diperoleh dari catatan medis 103 anjing yang terinfeksi. Anak anjing umumnya didiagnosa sebesar 26,21%. Baik anjing jantan maupun anjing betina menunjukkan prevalensi yang hampir sama yaitu masing-masing 52,43% dan 47,57%. Mongrel memiliki prevalensi yang relatif lebih tinggi dibandingkan dengan anjing pedigree tetapi tidak ada predisposisi ras. Kasus infeksi multipel lebih umum terjadi dibandingkan dengan kasus infeksi tunggal. Penyakit yang ditularkan melalui kutu anjing menunjukkan prevalensi yang lebih tinggi antara musim intermonsoon di Malaysia. Tanda-tanda klinis paling umum yang ditunjukkan oleh anjing adalah anoreksia, tidak aktif, dan diatesis berdarah. Untuk menunjang diagnosis, anemia dan trombositopenia dapat dilihat dari hasil hitung darah lengkap pasien. Test kit menunjukkan hasil positif bila antibodi atau antigen terdeteksi. Parasit juga dapat diamati di bawah mikroskop menggunakan apusan darah. Prevalensi penyakit kutu akan dipengaruhi oleh faktor intrinsik (umur, jenis kelamin) dan ekstrinsik (cuaca).
Keyword: blood parasites, canine, prevalence, tick-borne disease, parasit darah, anjing, prevalensi, kutu