Judul: Diferensial Leukosit Sapi BX yang Diberi Imbuhan Pakan Daun Katuk Di PT. Great Giant Livestock
Abstrak: Daun katuk memiliki beberapa senyawa aktif yang dapat mempengaruhi kondisi fisiologis di dalam jaringan, khususnya pada darah. Gambaran darah sapi BX yang diberi imbuhan pakan daun katuk ini belum pernah dilaporkan, sehingga perlu dilakukan penelitian untuk mengetahui kondisi gambaran deferensial leukositnya. Sebanyak 9 sapi BX dibagi menjadi 3 kelompok yaitu kelompok kontrol (tanpa penambahan ekstrak bubuk dan pellet katuk), kelompok perlakuan 1 (dengan penambahan ekstrak bubuk katuk), dan kelompok perlakuan 2 (dengan penambahan ektrak pellet katuk). Pengambilan sampel darah dilakukan setelah pemberian perlakuan selama tiga bulan dan dilakukan melalui vena coccigea. Hasil penelitian menunjukkan bahwa sapi dari semua kelompok perlakuan dan kontrol memiliki jumlah leukosit yang tidak berbeda secara signifikan dan persentase leukosit dalam kisaran normal. Perlakuan penambahan pakan ekstrak katuk dalam bentuk pellet berpengaruh terhadap peningkatan persentase limfosit namun menurunkan jumlah neutrofil dibanding dengan sapi yang diberi ekstrak katuk dalam bentuk serbuk maupun kontrol tanpa perlakuan. Perlakuan penambahan pakan ekstrak katuk dalam bentuk bubuk meningkatkan persentase eosinofil namun tidak mempengaruhi jenis leukosit lainnya. Pemberian imbuhan pakan daun katuk tidak mempengaruhi jumlah leukosit namun mempengaruhi persentase leukosit yaitu limfosit, neutrofil, dan eosinosfil sedangkan persentase monosit dan basofil tidak terpengaruhi.
Keyword: katuk leaf, leukocyte, brahman cross

Judul: Total dan Diferensiasi Leukosit Sapi Pejantan Unggul dengan Body Condition Scoring (BCS) Tinggi
Abstrak: Bull were sperm producer for artificial insemination. Physiological data such as leukocytes differentiation were important for supporting routine health monitoring. The objective of this study is to get the profile of leukocytes from high-level body condition scoring (BCS) of bull. The 30 blood samples of 3 breed bull (Simmental, Brahman, Friesian Holstein) were collected through coxygeal vein and calculated using microscope eye-piece camera instrument. The results showed that bull in A group (age <5 years) had higher total leukocytes than bull in B group (age >5 years). Average value of total leukocytes, eosinophil, neutrophil, basophil, lymphocyte, and monocyte of bull in A group were 7764 cell/μL, 411 cell/μL, 4150 cell/μL, 109 cell/μL, 2892 cell/μL, and 204 cell/μL consecutively. While the average value of total leukocytes, eosinophil, neutrophil, basophil, lymphocyte, and monocyte of bull in B group were 6832 cell/μL, 437 cell/μL, 3771 cell/μL, 71 cell/μL, 2363 cell/μL, and 192 cell/μL consecutively. Leukocytes morphology between breed and ages also shown the similar shape.
Keyword: Bogor Agricultural University (IPB), high-level bcs, leukocyte differentiation, bull

Judul: Pengembangan Sistem Rotasi Peta pada Perangkat Mobile tanpa Sensor Magnetometer
Abstrak: Due to the improvement of technology, the function of mobile phone has changed a lot. Nowadays, mobile phone is used not only for communication, but also to support the user’s activity. Many mobile phones now have Operating System (OS) and sensors like GPS and magnetometer. GPS is a sensor that can be used to identify any location, including the location of the user, while magnetometer can be used to identify direction. With data that come from GPS and magnetometer, we can build a navigation application that can rotate its map according to the rotation of the user. Meanwhile, in the Android Compability Definition Document point 1.6 until 2.2, Google have requirements for mobile phones to have GPS and magnetometer sensors if they want to use Android OS. But, since the release of 2.3.3 OS, Google has changed its requirements, allowing any mobile phones to have Android OS without having the magnetometer sensor. The objective of this research is to build an navigation application that can rotate without using magnetometer sensor. The value of the rotation degree is taken from last two position. To stabilize the value, Exponential Smoothing is used in filtering process. This system also use Haversine method to recognize whether the user is walking or driving/riding.
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