Judul: A design of Arduino based monitoring and recording device for refrigerated
Abstrak: Refrigeration equipment in refrigerated transportation is built to function for long periods without attention. Air temperature monitoring during transportation takes place could detect whether the equipment was functioning correctly. The solution offered in this research was to design a device to monitor and record temperature during transportation. The aim of this study was to build a system and device prototype to monitor and record temperature of refrigerated transportation and to test the performance the designed device. The device use Arduino open source microcontroller platform as the basis. The data of the temperature stored inside SD eard as a log file to report the temperature history during transportation. The device Will transmit warning to drivers and related stakeholders. Warning activity occurred the fluctuation of the container temperature reach or exceed temperature maximum threshold. Several performance tests were done, included basic feature test, recording fest, and transportation simulation test. From the result, using accuracy formula, the temperature measurement relative accuracy level of the device is 80.19% and absolute average accuracy level is 1.6 °C in 8-10 °C temperature working range.
Keyword: Arduino, Microcontroller, Refrigerated transportation, Temperature recording, Agro industrial technology, System requite ment identification, Prototype development

Judul: Desain alat transportasi ikan segar berpendingin untuk pedagang ikan keliling
Abstrak: Deterioration of fish quality after catching is still quite high at about 27 percent. It caused by mishandling of fish during transportation from the fish auction to consumers. The mishandling of fish caused by transportation equipment that used by traders use styrofoam box and plastic buckets. The equipment is not effective to implement cold chain system. The transportation equipment is difficult to apply on a motorcycle so upset the balance of driving. This study aims to maintain the quality of fresh fish and facilitate the transport of fish for fish traders by motorcycle. To achieve these objectives is done by designing the fish refrigerated container Design steps of fish refrigerated container in this study includes the identification of user needs, determination of design criteria, conceptual design, design analysis, drafting, manufacture process and performance test. Identification of user needs carried out by determining the physical characteristics of fish and motorcycles, determine the trading activities, transportation equipment capacity and the duration of the transport process. Specified design criteria of refrigerated container are : (1) fish refrigerated container can maintain the fish temperature below 10 °C, (2) fish refrigerated container using thermoelectric cooler, (3) fish refrigerated container can maintain the fish quality, (4) fish refrigerated container compatible with a motorcycle, (5) fish refrigerated container could assist the fish trading. Functional design of refrigerated container are to maintain the fish temperature below 10 °C, to place the equipment of trading activities and set the refrigerated container on a motorcycle. The container was designed using alumuninum plat of 0.5 mm thick with 33 mm thick of polyurethane insulation. A thermoelectric cooler equipped with a heatsink and heat pipes were used for maintaining a lower temperature in the container and the motorcycle accu were used for power supply. As for fish traders, a pair of container was set on a motorcycle using a suspending frame. Design analysis showed that cooling load of refrigerated container was 11.21 Watts/container. Its derived from transmission load through walls was 7.24 Watt and air infiltration when opening and closing cap of refrigerated container was 3.97 Watts. Stress analysis of suspending frame showed that the stress distribution on suspending frame maximum was 8 x 106 N/m2 and yield strength values was 5.5 x 107 N/m2, while the maximum displacement occurring was 0.072 mm. Several performance tests were conducted using load and without load. Performance tests using load were carried out in actual tradings. Performance tests without load was conducted to determine the temperature of the fish storage and determine the COP of refrigerated container. Performance tests were carried by trader to determine the fish temperature, fish quality after transport activity and determine acceptance traders. In this study, also conducted economic studies for fish transportation. The performance test results showed that the refrigerated container could maintain the fish temperature below 3 0C for 3.8 hours. The container temperature without load reaches 11.1 0C to 15.5 0C for 120 minutes and the COP volue of refrigerated container was 0.33. Organoleptic value of fish after transport activities ranged from 7.1 to 7.3 and TPC value ranged from
Keyword: container transportation, thermoelectric cooler, fresh fish, polyurethane, fish traders

Judul: Keanekaragaman Jenis Lumut di Taman Hutan Raya Sesaot Kabupaten Lombok Barat, Provinsi Nusa Tenggara Barat
Abstrak: Kenaekaragaman lumutdi Taman Hutan Raya Sesaot Lombok Barat, Nusa Tenggara Barat memiliki 38 jenis, 13 family dan dua kelas. Keragaman lumut yang paling banyak ditemukan adalah di kawasan hutan primer yaitu ada 32 jenis, di hutan kawasan kebun buah adalah 15 jenis, dan di kawasan hutan tanaman ditemukan sebanyak 16 jenis. Ada tujuh jenis lumut yang terdapat di tiga kawasan yaitu lumut jenis Fissiden sp, Vescularia montagni, Lejeunea sp, Calymperes sp, Calymperes boulagi, Neckeropsis gracilenta, Barbella sp, Taxitithelium instratum dan jenis lumut yang paling banyak ditemukan adalah Lejeunea sp dari famili Lejeuneaceae dan kelasnya adalah Hepatice. Lumut yang paling sedikit ditemukan adalah Taxithelium sp, familinya adalah Sematophyllaceae, dan kelasnya adalah Musci. Calyptotherium sp., familinya adalah Entodontaceae, dan kelasnya adalah Musci, Plagiochila sp., familynya adalah Lophoziaceae, dan kelas Musci, dan Bazzania sp., familynya adalah Lepidoziaceae, dan kelasnya adalah Hepatice. Kondisi hutan berpengaruh terhadap pertumbuhan lumut dan peran ekologi lumut di dalam ekosistem hutan. Lumut juga termasuk tumbuhan perintis, itu terbukti dengan banyaknya lumut yang tumbuh pada pohon tumbang dan bekas tebangan hutan. Indeks nilai penting yang tertinggi terdapat di hutan tanaman yaitu di pada pohon Swietenia mahagoni dengan indeks nilai penting adalah 48.45% dan di kebun buah pada pohon Durio zibethinus dengan indeks nilai penting adalah 34.08%% dan indeks nilai penting tertinggi di hutan primer adalah 43.18% pada pohon Syzigium boerlager.
Keyword: Keanekaragaman, lumut, Sesaot