Judul: Perancangan Dan Pembuatan Alat Pemantau Detak Jantung Transmission Photoplethysmograph
Abstrak: Detak jantung merupakan indikator yang sangat berguna untuk menunjukkan kondisi kesehatan tubuh terutama jantung. Detak jantung sangat dipengaruhi oleh usia, dan beban kerya yang dilakukan. Ketika usia bertambah, detak jantung akan berkurang. Beban ketja meningkat maka detak jantung juga akan meningkat Timbulnya Detak jantung menunjukkan aktivitas jantung yang mengatur sirkulasi darah di dalam tubuh. Sehingga ketika teIjadi gangguan pada aktivitas jantuflg serta gangguan pada sirkulasi darah di dalam tubuh dapat diketahui dari detak jantung. Penelitian ini akan membuat sebuah alat pemantau detak jantung yang menggunakan metode optik dimana jaringan tubuh akan berperan sebagai filter sinar yang dipancarkan LED ultra merah. LED ultra merah memiliki daya pancaran yang lebih kuat dibanding LED merah biasa. Sinar merah yang dipancarkan dari SlImber cahaya LED, dilewatkan melalui jari tangan dan di baliknya terdapat photodioda yang akan menangkap cahaya yang diteruskan melalui jari tangan. SinyaJ yang ditangkap ini disaring dan dikuatkan
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Judul: Detection of Human Heart Rate Based on Changes in Skin Color Using Infrared Camera
Abstrak: Jantung merupakan salah satu organ tubuh yang paling penting. Secara medis, umumnya pengukuran detak jantung membutuhkan alat-alat seperti electrocardiograph (ECG), stetoskop, dan blood pressure measurement. Namun ketersediaan alat seperti ECG hanya tersedia di rumah sakit tertentu serta biaya pemeriksaan yang cukup tinggi. Metode lain yang dapat digunakan untuk mengukur denyut jantung adalah photoplethysmograph (PPG), yaitu mengukur perubahan volume darah di dalam suatu organ menggunakan sensor optik. Penelitian ini bertujuan untuk mendeteksi tingkat perubahan denyut jantung pada manusia menggunakan kamera inframerah dengan teknologi pengolahan citra serta mengetahui korelasinya terhadap pengukuran aktual. Alat yang digunakan adalah kamera inframerah berupa Kinect 360 dan pulse monitor untuk mendapatkan data denyut jantung. Peneitian ini dimulai dengan tahap pengambilan data. Data yang diambil berupa foto kondisi kulit subjek sebelum dan sesudah melakukan aktifitas fisik dan data denyut jantung subjek menggunakan metode step test. Tahap selanjutnya adalah pengolahan data yang dilakukan menggunakan regresi linier sederhana untuk mendapatkan tingkat korelasi antara hasil dari pengolahan citra yaitu reflektan inframerah dengan peningkatan denyut jantung. Hasil dari regresi linier sederhana menunjukkan perubahan reflektan inframerah yang cukup signifikan dengan rata-rata nilai korelasi mencapai 0.6. Hal ini menunjukkan adanya hubungan antara perubahan reflektan inframerah terhadap perubahan tingkat kelelahan sehingga metode deteksi peningkatan denyut jantung berdasarkan perubahan warna kulit menggunakan kamera inframerah dapat dilakukan, One of the essential organs is heart. Usually, for heart rate measurement we could use electrocardiograph (ECG), stethoscope, and blood pressure measurement. However, the ECG itself only could be found in certain hospitals and will cost a lot of money. Another method we could use for heart rate was photoplethysmograph, which measures the change of blood volume in an organ using the optic sensor. The objective of this research was to detect the change of human’s heart rate using infrared camera with image processing technology and to find out its correlation to actual measurements. The tools were used are infrared camera from Kinect 360 and pulse monitor to obtain the heart rate’s data. This research began with the data acquisition stage. The acquired data were images of subject skin condition before and after physical activity and heart rate’s data of subject using the step test method. The next stage was data processing which conducted by using simple linear regression to get the correlation level between the results of image processing i.e. infrared reflectance and the heart rate change. The results of simple linear regression shown that the change in infrared reflectance value was significant, which the average correlation value was 0.6. The result showed that there was a strong relationship between changes in infrared reflectance and heart rate change, therefore an infrared camera recommended to be used to detect heart rate change.
Keyword: heart rate, infrared camera, skin color

Judul: The effectiveness of entomopathogenic fungi, beauveria bassiana (Balsamo) vuillemin and lecanicillium lecanii (Zimm.) (Viegas) zare & gams against the asiatic corn borer, ostrinia furnacalis guenée (Lepidoptera: Crambidae).
Abstrak: This study was conducted at the Insect Pathology Laboratory, Plant Protection Department, Bogor Agricultural University, from March to September 2013. Tested insects,Ostrinia furnacalis, were collected from farmers cornfield in Dramaga, Bogor andthen reared in the laboratory. Isolates of Beauveria bassiana and Lecanicillium lecanii in this study were obtained from the collection of Insect Pathology Laboratory. Fungal suspension was innoculated to Tenebrio molitor adultsin order to increase the virulence after a long storage in the laboratory. Mycelia of the fungi from T. molitor cadavers were isolated and cultured on PDA (Potato Dextrose Agar) media, then colonies from PDA were subsequently transfered and maintained on rice media until± 21 days old. Fungi from this culture were used in this study. Bioassay were conducted with five levels of density, i.e. 105, 106, 107, 108 and 109 conidia/mL with ± 3 mL application volume for each treatment. Each treatment were made of four replicates. The number of larvae that were used for each replicate were 20 larvae, while the eggs treatment consistedof one egg mass per replicate. Probit analysis was used to analyze the mortality data and to estimate the value of LC. Result of this study indicated that B. bassiana with 109 conidia/mL caused 78.75% mortality of 2rd instar larvae, whereasthe same conidial density of L. lecanii caused 71.25% mortality. The value of LC50 were 1.39 x 106 conidia/mL for B. bassiana and 1.62 x 106 for L. lecanii; both LC values were calculated at 7 days observation. While 100% egg mortality was achieved by application of B. bassiana at 109 conidia/mL, the same degree of mortality could be achieved by L. lecanii at lower density,i.e. 108konidia/mL. Value of LC for both fungi against eggs at 3 days post treatment are 9.6 x 105 and 6.1 x 105 conidia/mL, respectively.
Keyword: conidia, density, eggs, larvae, mortality