Judul: Arsitektur Internet of Things Berbasis Protokol MQTT di Amazon Web Services
Abstrak: Penelitian ini berfokus pada pembuatan arsitektur Internet of Things (IoT) yang aman dan skalabilitas tinggi. Tujuan dari penelitian ini adalah menghasilkan arsitektur IoT yang dapat diterapkan pada node di lahan pertanian dengan bandwidth rendah . Arsitektur IoT dirancang menggunakan protokol Message Queuing Transport Telemetry (MQTT) yang disediakan oleh Amazon Web Services (AWS). Keluaran dari penelitian ini data yang dikirim dengan protokol MQTT keamanannya terjamin, tidak terjadi packet loss, mempunyai delay sebesar 156 ms tetapi mempunyai nilai overhead yang cukup besar karena payload yang dikirim mempunyai rentang ukuran 90 bytes sampai 150 bytes sedangkan header berukuran 40 bytes.
Keyword: aman, Amazon Web Services, bandwidth rendah, Internet of Things, Message Queuing Transport Telemetry

Judul: Comparative Analysis of MQTT and HTTP Protocol Performance on Air Quality Monitoring IoT Devices.
Abstrak: Kegiatan industri dan transportasi menghasilkan peningkatan konsentrasi materi partikulat yang berbahaya bagi kesehatan masyarakat. Pentingnya memasang alat pemantau udara untuk memantau dan memberikan data yang dibutuhkan untuk mengambil tindakan preventif untuk melindungi kesehatan masyarakat. Dalam upaya menjaga lingkungan, penting untuk membangun alat yang hemat sumber daya. Penelitian ini bertujuan membangun alat pemantau kualitas udara serta analisis konsumsi daya yang digunakan alat. Menggunakan konsep Internet of Things dan protokol komunikasi Message Queuing Telemetry Transport serta Hypertext Transfer Protocol untuk mengirim data, juga menggunakan sensor DSM501A kualitas udara dapat dipantau. Hasil penelitian ini berhasil membangun alat pemantauan kualitas udara menggunakan Internet of Things, mulai dari perancangan alat dan pengiriman data. Selain itu, dari pengujian protokol, QoS 0 memiliki delay dan penggunaan paling rendah baik pada jaringan WiFi dan GSM. Delay sebesar 238 ms dan daya 77,282 mA pada GSM, lalu delay 35 ms dan daya 71,641 mA pada WiFi. Pada semua protokol, semua data yang dikirim tidak menunjukkan adanya packet loss., Industrial and transportation activities result in increased concentrations of particulate matter that are harmful to public health. It is important to install air monitoring devices to monitor and provide data needed to take preventive measures to protect public health. In an effort to protect the environment, it is important to build resource-efficient devices. This research aims to build an air quality monitoring device and analyze the power consumption used by the device. Using the Internet of Things concept as well as Message Queuing Telemetry Transport and Hypertext Transfer Protocol, air quality can be monitored through sensor called DSM501A. The result of this study successfully built an air quality monitoring tool using Internet of Things, starting from tool design and data transmission. In addition, from both protocol testing, QoS 0 has the lowest delay and power usage on both WiFi and GSM networks. Delay of 238 milliseconds and power usage of 77,282 mA on GSM, then delay of 35 milliseconds and power usage of 71,641 mA on WiFi. In all protocols, all data sent showed no packet loss.
Keyword: HTTP, Internet of Things, MQTT, particulate matter, power consumption

Judul: Buprenorphine and Fischer-344 Rats Post-operative Stress Levels: Impact on Serum Corticosterone Levels.
Abstrak: The use of laboratory animals in experiment often requires surgical operations. Post-operative condition often associated with pain and stress. Preemptive analgesia and post operative treatment with buprenorphine can reduce post operative pain and stress and prevent prolonged pain. Therefore, the aim of the present study was to test the hypothesis that pre operative treatment of buprenorphine reduces stress and suppresses the pre-operative serum corticosterone levels in Fischer 344 rats. A total of 14 adult male Fischer 344 (F344/Sca) rats permanently catheterized in artery carotis communis were used. During 94 hour post-operatively the blood sample was collected at specific time point using Accusampler®, an automated blood sampling. Corticosterone levels were quantified with ELISA method using sheep polyclonal antibody to corticosterone. Buprenorphine is effective as pre-emptive analgesia in F344 strain. However the dose is higher than what has been reported in Sprague Dawley strain. Buprenorphine 1.0 mg/kg significantly suppressed serum corticosterone levels immediately after rats regain consciousness. Rats in buprenorphine 1.0 mg/kg group were protected from post operative body weight loss and reduced water intake compare to control, nutella, and buprenorphine 0.4 mg/kg group. Quantification of fecal corticosteroid metabolites failed to detect stress in present study.
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