The Radiotherapy Unit at Andalas University Hospital (Unand Hospital), Padang City, has a brachytherapy facility with multichannel indexer technology of High Dose Rate on the Remote after Loading System type MicroSelectron HDR and has 6 channels. The radioactive source used is Iridium-192 or Ir-192, with an initial activity of about 12 Ci. This study uses a well-type chamber ionization detector to verify the brachytherapy source against HDR Ir-192. The well-type chamber detector measures the radiation dose given to the patient during the brachytherapy procedure. This study uses detectors to measure radiation dose at several points around the source. The study was conducted by verifying the activity of the radiation source in Ir-192 brachytherapy using a voltage of 200 V and 400 V. It was regulated using an electrometer connected to a detector. The results show that the well-type chamber detector could accurately verify the source of brachytherapy. In addition, the measured activity values are in accordance with those permitted in standardization in brachytherapy, which is around 10 to 12 GBq. Therefore, well-type chamber ionization detectors can effectively verify brachytherapy sources. Thus, proper radiation source verification is paramount to ensure patient safety and treatment effectiveness
{"title":"Verification of Brachytherapy Sources Against Ir-192 HDR Using Well Type Ionization Detectors at Universitas Andalas Hospital","authors":"Ramacos Fardela, Rika Analia, Atika Maulida, Suci Ramda Rena, Fiqi Diyona, Dedi Mardiansyah","doi":"10.20527/flux.v20i2.16727","DOIUrl":"https://doi.org/10.20527/flux.v20i2.16727","url":null,"abstract":"The Radiotherapy Unit at Andalas University Hospital (Unand Hospital), Padang City, has a brachytherapy facility with multichannel indexer technology of High Dose Rate on the Remote after Loading System type MicroSelectron HDR and has 6 channels. The radioactive source used is Iridium-192 or Ir-192, with an initial activity of about 12 Ci. This study uses a well-type chamber ionization detector to verify the brachytherapy source against HDR Ir-192. The well-type chamber detector measures the radiation dose given to the patient during the brachytherapy procedure. This study uses detectors to measure radiation dose at several points around the source. The study was conducted by verifying the activity of the radiation source in Ir-192 brachytherapy using a voltage of 200 V and 400 V. It was regulated using an electrometer connected to a detector. The results show that the well-type chamber detector could accurately verify the source of brachytherapy. In addition, the measured activity values are in accordance with those permitted in standardization in brachytherapy, which is around 10 to 12 GBq. Therefore, well-type chamber ionization detectors can effectively verify brachytherapy sources. Thus, proper radiation source verification is paramount to ensure patient safety and treatment effectiveness","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135134562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-08DOI: 10.20527/flux.v20i2.12810
Wenny Maulina, Totok Wicaksono, Agung Tjahjo Nugroho
Measurements of sound transmission loss have been successfully carried out on various thicknesses of nylon membrane as an absorbing material. Nylon membrane were prepared using hydrogen chloride (HCl) and acetyl aceton in the casting solution by phase inversion methods. Nylon membrane with different thickness used in this reseach were 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm. Measurement of sound transmission loss was carried out using a reverberation chamber with sound frequencies of 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz. The results show that, with the increase of thickness of nylon membrane, sound transmission loss of nylon membran was improved. The sound transmission loss of nylon membrane with thickness of 4 mm is the best, whose sound trasnmission loss was up to 46.39 dB at 4000 Hz. This nylon membrane is suitable for lightweight sound barriers and is promising and worthy of further study.
{"title":"Effect of Nylon Membrane Thickness on the Value of Sound Transmission Loss as an Alternative Insulation Material","authors":"Wenny Maulina, Totok Wicaksono, Agung Tjahjo Nugroho","doi":"10.20527/flux.v20i2.12810","DOIUrl":"https://doi.org/10.20527/flux.v20i2.12810","url":null,"abstract":"Measurements of sound transmission loss have been successfully carried out on various thicknesses of nylon membrane as an absorbing material. Nylon membrane were prepared using hydrogen chloride (HCl) and acetyl aceton in the casting solution by phase inversion methods. Nylon membrane with different thickness used in this reseach were 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm. Measurement of sound transmission loss was carried out using a reverberation chamber with sound frequencies of 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz. The results show that, with the increase of thickness of nylon membrane, sound transmission loss of nylon membran was improved. The sound transmission loss of nylon membrane with thickness of 4 mm is the best, whose sound trasnmission loss was up to 46.39 dB at 4000 Hz. This nylon membrane is suitable for lightweight sound barriers and is promising and worthy of further study.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135841121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The road crosses the North Bengkulu district to the Lebong district is one of the areas where landslides frequently occur in Bengkulu province. The occurrence of landslides can be caused by high rainfall, steep hillsides, high levels of soil vulnerability, and others. This study aims to map landslide-prone areas build on indicators of the natural frequency value (f0), the amplification value (A0), and the soil vulnerability value (Kg). Measurements from this study used the PASI Mod Gemini 2 Sn-1405 seismometer for ± 30 minutes at 25 measurement points. Geopsy software is used for microtremor data processing to obtain the H/V curve. The results obtained are dominant frequency values between 1.3 – 7.6 Hz, amplification factor values between 1.6 – 6.93, and seismic vulnerability index values 0,5 – 8. After getting the values of these parameters, a distribution map is made based on the values of each parameter, making distribution map using surfer software by merging the values of each parameter and the coordinates of the research location points. Based on the values of these parameters it can be concluded that the areas that have the potential for landslides are in the area of points T1, T6, and T25.
{"title":"Microzonation of Landslide Potential Areas Using the Microtremor Method in the North Bengkulu - Lebong Regency","authors":"Ardika Pratama Panjaitan, Ronni Saragih, Anggiat Hutahuruk, Suhendra Suhendra","doi":"10.20527/flux.v20i2.14957","DOIUrl":"https://doi.org/10.20527/flux.v20i2.14957","url":null,"abstract":"The road crosses the North Bengkulu district to the Lebong district is one of the areas where landslides frequently occur in Bengkulu province. The occurrence of landslides can be caused by high rainfall, steep hillsides, high levels of soil vulnerability, and others. This study aims to map landslide-prone areas build on indicators of the natural frequency value (f0), the amplification value (A0), and the soil vulnerability value (Kg). Measurements from this study used the PASI Mod Gemini 2 Sn-1405 seismometer for ± 30 minutes at 25 measurement points. Geopsy software is used for microtremor data processing to obtain the H/V curve. The results obtained are dominant frequency values between 1.3 – 7.6 Hz, amplification factor values between 1.6 – 6.93, and seismic vulnerability index values 0,5 – 8. After getting the values of these parameters, a distribution map is made based on the values of each parameter, making distribution map using surfer software by merging the values of each parameter and the coordinates of the research location points. Based on the values of these parameters it can be concluded that the areas that have the potential for landslides are in the area of points T1, T6, and T25.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136368337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This Study aims to determine the effect of the Sun's annual apparent motion on the oscillations of the Subuh prayer time, especially in the city of Pontianak. The research method used is the literature review or reference method. In the literature review, the things that were done included: looking for the schedule of the dawn prayer in the city of Pontianak over one year, knowing the geographical position of the city of Pontianak, the apparent annual motion of the Sun, and the effect of the annual apparent motion of the Sun on the initial oscillation of the Subuh prayer time. Apart from that, another thing done in the literature review was to look for the influence of the earth-sun distance on the oscillations of the dawn prayer time. The results showed that there were similarities between the oscillations of the annual apparent motion of the Sun and the oscillations of the dawn prayer time in the city of Pontianak. However, there is a time difference with an average of 41 days between the oscillation of the Sun's annual apparent motion and the oscillation of the time of the Subuh prayer. The results of the Study also show that the distance from the Earth to the Sun (aphelion and perihelion) affects the initial oscillation of the dawn prayer time. When the Earth is at the aphelion point, the time for the Subuh prayer falls later than usual. Meanwhile, when the Earth is at perihelion, the time for the dawn prayer falls faster than usual.
{"title":"The Effect of Annual Apparent Motion of the Sun on the Early Oscillation of Shubuh Prayer Time (Case Study of Pontianak City)","authors":"Asep Saefullah, Diana Ayu Rostikawati, Yuant Tiandho","doi":"10.20527/flux.v20i2.15899","DOIUrl":"https://doi.org/10.20527/flux.v20i2.15899","url":null,"abstract":"This Study aims to determine the effect of the Sun's annual apparent motion on the oscillations of the Subuh prayer time, especially in the city of Pontianak. The research method used is the literature review or reference method. In the literature review, the things that were done included: looking for the schedule of the dawn prayer in the city of Pontianak over one year, knowing the geographical position of the city of Pontianak, the apparent annual motion of the Sun, and the effect of the annual apparent motion of the Sun on the initial oscillation of the Subuh prayer time. Apart from that, another thing done in the literature review was to look for the influence of the earth-sun distance on the oscillations of the dawn prayer time. The results showed that there were similarities between the oscillations of the annual apparent motion of the Sun and the oscillations of the dawn prayer time in the city of Pontianak. However, there is a time difference with an average of 41 days between the oscillation of the Sun's annual apparent motion and the oscillation of the time of the Subuh prayer. The results of the Study also show that the distance from the Earth to the Sun (aphelion and perihelion) affects the initial oscillation of the dawn prayer time. When the Earth is at the aphelion point, the time for the Subuh prayer falls later than usual. Meanwhile, when the Earth is at perihelion, the time for the dawn prayer falls faster than usual.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136368329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.20527/flux.v20i2.15337
Yelfira Sari, Putri Ade Rahma Yulis
One of the practical and efficient products of biomass processing is briquettes. Briquettes are densified products in the form of cubic, prism, or cylindrical shapes. One of the biomass produced from abundant agricultural waste in Riau Province is coconut coir. This is because Riau Province is one of the largest coconut-producing regions in Indonesia. The utilization of coconut coir waste is currently still limited to crafts, fuel, and planting media. This study aims to produce briquettes from a waste of old coconut coir and young coconut coir with the stages of the research process including cleaning, drying, grinding, adding adhesive, and densification. The resulting briquettes were then subjected to laboratory tests to determine the physical characteristics of the briquettes based on SNI No. 1/6235/2000 and structural characteristics using SEM and TG/DTG. The results showed that laboratory tests for old coconut coir briquettes and young coconut coir based on water content were 28.11% and 29.72%; based on ash content are 1.59% and 2.21%; based on the carbon content are 25.10% and 24.94%, and the heating value is 3019.54 cal/g and 3137.03 cal/g. For SEM analysis, the surface morphology of the briquettes looked smooth and there was no fragmentation indicating that the biomass was perfectly bonded with the binder used. Meanwhile, in the TG/DTG analysis, the results showed that there had been a mass decrease of around 90% for old coconut coir briquettes and 78% for young coconut coir briquettes at a temperature of around 450oC
{"title":"Briket Sabut Kelapa (Cocos nucifera L.) sebagai Bahan Bakar Alternatif Berbasis Sumber Daya Alam Lokal/Coconut (Cocos nucifera L.) Coir Briquettes as an Alternative Fuel Based on Local Natural Resources","authors":"Yelfira Sari, Putri Ade Rahma Yulis","doi":"10.20527/flux.v20i2.15337","DOIUrl":"https://doi.org/10.20527/flux.v20i2.15337","url":null,"abstract":"One of the practical and efficient products of biomass processing is briquettes. Briquettes are densified products in the form of cubic, prism, or cylindrical shapes. One of the biomass produced from abundant agricultural waste in Riau Province is coconut coir. This is because Riau Province is one of the largest coconut-producing regions in Indonesia. The utilization of coconut coir waste is currently still limited to crafts, fuel, and planting media. This study aims to produce briquettes from a waste of old coconut coir and young coconut coir with the stages of the research process including cleaning, drying, grinding, adding adhesive, and densification. The resulting briquettes were then subjected to laboratory tests to determine the physical characteristics of the briquettes based on SNI No. 1/6235/2000 and structural characteristics using SEM and TG/DTG. The results showed that laboratory tests for old coconut coir briquettes and young coconut coir based on water content were 28.11% and 29.72%; based on ash content are 1.59% and 2.21%; based on the carbon content are 25.10% and 24.94%, and the heating value is 3019.54 cal/g and 3137.03 cal/g. For SEM analysis, the surface morphology of the briquettes looked smooth and there was no fragmentation indicating that the biomass was perfectly bonded with the binder used. Meanwhile, in the TG/DTG analysis, the results showed that there had been a mass decrease of around 90% for old coconut coir briquettes and 78% for young coconut coir briquettes at a temperature of around 450oC","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-13DOI: 10.20527/FLUX.V15I2.4355
S. T. M. Famani, Giner Maslebu, S. Trihandaru, M. Hidayatullah
Penjumlahan dosis radiasi pada lapangan foton dan elektron menyebabkan terjadi kelebihan dosisi (hot spot) di sisi lapangan foton dan kekurangan dosis (cold spot) di sisi lapangan elektron. Untuk itu, penelitian mengenai pengaruh jarak (gap) lapangan foton dan elektron terhadap distribusi dosis radiasi telah dilakukan dengan melakukan pengukuran dan perhitungan dosis radiasi serap dengan analisis menggunakan Dose – Volume Histogram (DVH) pada tahap Treatment Planning System (TPS) . Sampel yang digunakan dalam penelitian ini yaitu water solid phantom yang dipindai dengan detektor PTW (2D Array) menggunakan CT Simulator. Hasil pemindaian kemudian dikirim ke komputer TPS untuk dibuatkan variasi lapangan foton dan elektron dengan jarak antar lapangan 0 – 5 mm pada kedalaman tertentu dengan SSD 95 cm, 97,5 cm, 100 cm, 102,5 cm, dan 105 cm sehingga didapatkan distribusi dosis yang dapat dilihat pada DVH. Hasil analisis distribusi dosis pada DVH menunjukkan distribusi dosis yang menunjukkan keseragaman dosis antar dosis maksimum dan dosis minimum berturut-turut 7,5% dan -6,4% yaitu pada SSD 95 cm dan 97,5 cm dengan jarak (gap) antara lapangan foton dan elektron 3 mm. Namun secara klinis, SSD yang direkomendasikan untuk digunakan pada treatment , yaitu SSD 97,5 cm dengan jarak (gap) antar lapangan 3 mm. Hal ini menunjukkan bahwa jarak (gap) antara lapangan foton dan elektron mempengaruhi distribusi dosis berkas foton dan elektron.
{"title":"Analisis Efek Dosimetri dan Jarak dari Penggabungan Lapangan Foton 6 MV dan Lapangan Elektron 8 MeV pada Terapi Ca Mammae","authors":"S. T. M. Famani, Giner Maslebu, S. Trihandaru, M. Hidayatullah","doi":"10.20527/FLUX.V15I2.4355","DOIUrl":"https://doi.org/10.20527/FLUX.V15I2.4355","url":null,"abstract":"Penjumlahan dosis radiasi pada lapangan foton dan elektron menyebabkan terjadi kelebihan dosisi (hot spot) di sisi lapangan foton dan kekurangan dosis (cold spot) di sisi lapangan elektron. Untuk itu, penelitian mengenai pengaruh jarak (gap) lapangan foton dan elektron terhadap distribusi dosis radiasi telah dilakukan dengan melakukan pengukuran dan perhitungan dosis radiasi serap dengan analisis menggunakan Dose – Volume Histogram (DVH) pada tahap Treatment Planning System (TPS) . Sampel yang digunakan dalam penelitian ini yaitu water solid phantom yang dipindai dengan detektor PTW (2D Array) menggunakan CT Simulator. Hasil pemindaian kemudian dikirim ke komputer TPS untuk dibuatkan variasi lapangan foton dan elektron dengan jarak antar lapangan 0 – 5 mm pada kedalaman tertentu dengan SSD 95 cm, 97,5 cm, 100 cm, 102,5 cm, dan 105 cm sehingga didapatkan distribusi dosis yang dapat dilihat pada DVH. Hasil analisis distribusi dosis pada DVH menunjukkan distribusi dosis yang menunjukkan keseragaman dosis antar dosis maksimum dan dosis minimum berturut-turut 7,5% dan -6,4% yaitu pada SSD 95 cm dan 97,5 cm dengan jarak (gap) antara lapangan foton dan elektron 3 mm. Namun secara klinis, SSD yang direkomendasikan untuk digunakan pada treatment , yaitu SSD 97,5 cm dengan jarak (gap) antar lapangan 3 mm. Hal ini menunjukkan bahwa jarak (gap) antara lapangan foton dan elektron mempengaruhi distribusi dosis berkas foton dan elektron.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46378517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oyster Mushroom is one of the high-value consumption mushrooms. The development of mushroom experienced rapid growth marked by the increasing number of farmers breeding mushroom is directly proportional to number of mushroom food business. The process of mushroom cultivation in mushroom’s greenhouse depends on physical factors such as temperature, humidity, light, pH of planting medium, and air aeration. Watering activity is done if the condition and humidity of mushroom's greenhouse was dry, three times a day at the morning, afternoon and evening. If the conditions of temperature and humidity fluctuate in the current seasons, it is not enough to be sprayed. High temperature and humidity fluctuations disturbed harvest. The results of this research are realtime temperature and humidity control system, esp8266 12-F and DHT22 sensor to read humidity value that can do watering and keep humidity greenhouse. The best humidity limit is 65% and maximum is 80%. If the humidity condition reaches 65%, then esp8266 will activate the relay to turn on the DC pump machine and nozzle spray. If humidity reached 80%, then esp8266 will turn off the DC pump. 80% humidity limit setting to avoid mushrooms from getting too wet. Humidity conditions monitored with android smartphone in realtime.
{"title":"Sistem Pengendalian Suhu dan Kelembaban Kumbung Jamur Tiram secara Realtime Menggunakan Esp8266","authors":"Arafat Arafat, Desy Ika Puspitasari, Wagino Wagino","doi":"10.20527/flux.v1i1.5928","DOIUrl":"https://doi.org/10.20527/flux.v1i1.5928","url":null,"abstract":"Oyster Mushroom is one of the high-value consumption mushrooms. The development of mushroom experienced rapid growth marked by the increasing number of farmers breeding mushroom is directly proportional to number of mushroom food business. The process of mushroom cultivation in mushroom’s greenhouse depends on physical factors such as temperature, humidity, light, pH of planting medium, and air aeration. Watering activity is done if the condition and humidity of mushroom's greenhouse was dry, three times a day at the morning, afternoon and evening. If the conditions of temperature and humidity fluctuate in the current seasons, it is not enough to be sprayed. High temperature and humidity fluctuations disturbed harvest. The results of this research are realtime temperature and humidity control system, esp8266 12-F and DHT22 sensor to read humidity value that can do watering and keep humidity greenhouse. The best humidity limit is 65% and maximum is 80%. If the humidity condition reaches 65%, then esp8266 will activate the relay to turn on the DC pump machine and nozzle spray. If humidity reached 80%, then esp8266 will turn off the DC pump. 80% humidity limit setting to avoid mushrooms from getting too wet. Humidity conditions monitored with android smartphone in realtime.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43745301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gia Eka Negara, A. A. Harnawan, Septian Nur Listyaputra, Anjar Pribadi
Telah dilakukan pengembangan modul perangkat keras dan perangkat lunak untuk melakukan penghitungan jentik nyamuk aedes aegypti. Perangkat keras terdiri dari chamber yang digunakan sebagai media pengamatan dan penempatan jentik nyamuk yang dilengkapi dengan system pencahayaan berbasis Arduino UNO untuk mengatur intensitas cahaya pada chamber, ketika dilakukan proses pengambilan citra. Sistem pengambilan citra dilakukan menggunakan kamera dengan pengiriman data dilakukan secara nirkabel menggunakan jaringan WIFI. Perangkat lunak terdiri dari sistem perhitungan yang dibuat secara interface, dengan algoritma : input citra, crop citra, ubah bentuk citra dari RGB ke grayscale, graycale diubah ke citra biner menggunakan fungsi threshold, citra biner kemudian difilter untuk menghilangkan noise, kemudian dilakukan proses penghitungan objek. Proses penghitugan objek terdiri dari dua bagian yaitu ketika tidak ada penumpukan objek dan ada penumpukan objek. Ketika tidak ada penumpukan objek, penghitungan objek dilakukan dengan cara menghitung berapa banyak objek yang berwarna putih. Ketika terdapat penumpukan objek digunakan watershed algorithm yang berfungsi untuk memisahkan dua objek yang bertumpuk. Pada penelitian ini sampel jentik nyamuk aedes aegypti diperoleh dari Balai Litbangkes Tanah Bumbu. Sistem perhitungan jentik nyamuk telah diuji coba pada 10 buah sampel jentik nyamuk, yang masing-masing sampel terdiri dari 5, 10, 15, 20, 25, 30, 35, 40, 45 dan 50 jentik nyamuk. Berdasarkan hasil penambilan data diperoleh nilai persen kesalahan < 5%.
已经开发了用于计算埃及伊蚊蚊棒的硬设备模块和软设备。硬件包括一个用作蚊子追踪介质的腔室和一个配备了基于UNO Arduino的照明系统的位置，以在执行图像捕获过程时设置腔室上的光强度。图像捕获系统是使用具有使用WIFI网络的无线数据传输的相机来执行的。软件由一个基于接口的计算系统组成，该系统具有以下算法：图像输入、图像裁剪、将图像形式从RGB转换为灰度、使用阈值函数将[UNK]灰度转换为二进制图像、然后对二进制图像进行转换以消除噪声，然后执行对象计算过程。计算对象的过程由两部分组成，即当没有对象集合时和有对象集合时。当没有对象组时，对象的计算是通过计算有多少白色对象来完成的。当对对象进行分组时，会使用分水岭算法来分离累积的两个对象。在这项研究中，从Litbangkes Balai Land Bumbu获得了埃及伊蚊的蚊棒样本。蚊子遏制系统已经对10个蚊子遏制样本进行了测试，每个样本包括5个、10个、15个、20个、25个、30个、35个、40个、45个和50个蚊子遏制样品。[UNK]根据数据采集结果，获得的误差百分比值<5%。
{"title":"Co-Jec (Counting Object) Jentik Nyamuk Aedes Aegypti menggunakan Metode Pengolahan Citra Digital","authors":"Gia Eka Negara, A. A. Harnawan, Septian Nur Listyaputra, Anjar Pribadi","doi":"10.20527/FLUX.V1I1.6155","DOIUrl":"https://doi.org/10.20527/FLUX.V1I1.6155","url":null,"abstract":"Telah dilakukan pengembangan modul perangkat keras dan perangkat lunak untuk melakukan penghitungan jentik nyamuk aedes aegypti. Perangkat keras terdiri dari chamber yang digunakan sebagai media pengamatan dan penempatan jentik nyamuk yang dilengkapi dengan system pencahayaan berbasis Arduino UNO untuk mengatur intensitas cahaya pada chamber, ketika dilakukan proses pengambilan citra. Sistem pengambilan citra dilakukan menggunakan kamera dengan pengiriman data dilakukan secara nirkabel menggunakan jaringan WIFI. Perangkat lunak terdiri dari sistem perhitungan yang dibuat secara interface, dengan algoritma : input citra, crop citra, ubah bentuk citra dari RGB ke grayscale, graycale diubah ke citra biner menggunakan fungsi threshold, citra biner kemudian difilter untuk menghilangkan noise, kemudian dilakukan proses penghitungan objek. Proses penghitugan objek terdiri dari dua bagian yaitu ketika tidak ada penumpukan objek dan ada penumpukan objek. Ketika tidak ada penumpukan objek, penghitungan objek dilakukan dengan cara menghitung berapa banyak objek yang berwarna putih. Ketika terdapat penumpukan objek digunakan watershed algorithm yang berfungsi untuk memisahkan dua objek yang bertumpuk. Pada penelitian ini sampel jentik nyamuk aedes aegypti diperoleh dari Balai Litbangkes Tanah Bumbu. Sistem perhitungan jentik nyamuk telah diuji coba pada 10 buah sampel jentik nyamuk, yang masing-masing sampel terdiri dari 5, 10, 15, 20, 25, 30, 35, 40, 45 dan 50 jentik nyamuk. Berdasarkan hasil penambilan data diperoleh nilai persen kesalahan < 5%.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46900261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Iwan Sugriwan, Adi Ramdani, Arfan Eko Fahrudin, Suryajaya Suryajaya
Alat ukur kadar gas metana (CH4), suhu dan kelembaban telah dilakukan. Alat ukur ini dapat diaplikasikan di perkebunan kelapa sawit di lahan gambut. Alat ukur ini terdiri dari sensor TGS2611, sensor SHT11, catu daya, voltage follower, mikrokontroler ATMega8535 dan LCD karakter 16x2. Tegangan keluaran sensor TGS2611 dikondisikan dengan rangkaian voltage follower kemudian dihubungkan dengan ADC internal mikrokontroler ATMega8535. Persamaan karakteristik sensor TGS2611 ditentukan dengan cara mengambil beberapa data kadar gas metana dan tegangan keluaran sensor pada datasheet sensor TGS2611 kemudian dibuat grafik persamaan karakteristiknya, sehingga diperoleh persamaan karakteristik sensor V=0,544ln(x)-2,113, dengan V adalah tegangan keluaran sensor dan x adalah kadar gas metana (ppm). Sensor SHT11 merupakan sensor digital yang sudah terkalibrasi pabrik, sehingga sensor SHT11 bisa langsung dihubungkan dengan catu daya, lalu data dari sensor dihubungkan ke mikrokontroler ATMega8535. Data hasil pengukuran ditampilkan pada LCD karakter 16x2 dan ditampilkan pada komputer dengan program yang telah dibuat menggunakan Delphi 7.0. Data hasil pengukuran juga tersimpan dalam database. Hasil pengukuran yang dilakukan selama 2 hari dengan durasi pengukuran satu setengah jam pada hari pertama dan 2 jam pada hari kedua menyatakan bahwa keberadaan gas metana tidak terdeteksi di kebun kelapa sawit yang ditanam di lahan gambut. Pada hari pertama pengukuran nilai suhu udara berkisar antara 28,8 0C – 30 0C dan nilai kelembaban udara berkisar 87,6% - 89,6%. Pada hari kedua pengukuran nilai suhu udara berkisar antara 26,6 0C - 33,1 0C dan nilai kelembaban udara berkisar 85,1% - 88,4%.
{"title":"Pemanfaatan Sistem Alat Ukur Kadar Gas Metana (Ch4), Suhu dan Kelembaban pada Perkebunan Kelapa Sawit di Lahan Gambut","authors":"Iwan Sugriwan, Adi Ramdani, Arfan Eko Fahrudin, Suryajaya Suryajaya","doi":"10.20527/flux.v1i1.6157","DOIUrl":"https://doi.org/10.20527/flux.v1i1.6157","url":null,"abstract":"Alat ukur kadar gas metana (CH4), suhu dan kelembaban telah dilakukan. Alat ukur ini dapat diaplikasikan di perkebunan kelapa sawit di lahan gambut. Alat ukur ini terdiri dari sensor TGS2611, sensor SHT11, catu daya, voltage follower, mikrokontroler ATMega8535 dan LCD karakter 16x2. Tegangan keluaran sensor TGS2611 dikondisikan dengan rangkaian voltage follower kemudian dihubungkan dengan ADC internal mikrokontroler ATMega8535. Persamaan karakteristik sensor TGS2611 ditentukan dengan cara mengambil beberapa data kadar gas metana dan tegangan keluaran sensor pada datasheet sensor TGS2611 kemudian dibuat grafik persamaan karakteristiknya, sehingga diperoleh persamaan karakteristik sensor V=0,544ln(x)-2,113, dengan V adalah tegangan keluaran sensor dan x adalah kadar gas metana (ppm). Sensor SHT11 merupakan sensor digital yang sudah terkalibrasi pabrik, sehingga sensor SHT11 bisa langsung dihubungkan dengan catu daya, lalu data dari sensor dihubungkan ke mikrokontroler ATMega8535. Data hasil pengukuran ditampilkan pada LCD karakter 16x2 dan ditampilkan pada komputer dengan program yang telah dibuat menggunakan Delphi 7.0. Data hasil pengukuran juga tersimpan dalam database. Hasil pengukuran yang dilakukan selama 2 hari dengan durasi pengukuran satu setengah jam pada hari pertama dan 2 jam pada hari kedua menyatakan bahwa keberadaan gas metana tidak terdeteksi di kebun kelapa sawit yang ditanam di lahan gambut. Pada hari pertama pengukuran nilai suhu udara berkisar antara 28,8 0C – 30 0C dan nilai kelembaban udara berkisar 87,6% - 89,6%. Pada hari kedua pengukuran nilai suhu udara berkisar antara 26,6 0C - 33,1 0C dan nilai kelembaban udara berkisar 85,1% - 88,4%.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43234883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The fabrication of the ATMega16A-PU microcontroller-based the system turbidity sensor consists of sensor module Turbidity SKU:SEN0189 including with the signal conditioning, power supply unit, the ATMega16A-PU microcontroller module, LCD 16 x 2 character, and personal computer (PC). The measuring system is used to measure the quality of water on theriverMartapura South Kalimantan, Indonesia. The physical parameters that measured is the of water. The measuring of turbidity detected by the sensor through the light that traverse the suspended particles in water. The output signal from the sensor in from of the voltage signal is connectedwith ATMega16A-PU microcontroller viaport A0. The voltage signal output is inversely proportional to the turbidity. Theequation of sensor characteristic is obtained by comparing the measuring device with HACH DR 890 Colorimeter turbid meter gauge. The characteristic equation obtained is counted into five equations to get a small error value, where v1 = -0.0036k1 + 4.0834, v2 = -0.0024k2 + 3.9351, v3 = -0.003k3 + 4.1777, v4 = -0.0033k4 + 4.3355, v5 = -0.0034k5 + 4.4315, the five equations have different measurement ranges. The result of data measurement are displayed on the LCD 16 x 2 character and the personal computer (PC) with the Delphi.7 interface program. The advantages of personal computer (PC) interface are the data measurement result could monitor and stroge in excel and database format. The results of the measuring instrument show a difference of 1 NTU to 15 NTU with the largest deviation is ± 28.7 and a standard deviation of ± 4.57 in the range of 31 NTU to 510 NTU
基于系统浊度传感器的ATMega16A PU微控制器的制造包括传感器模块浊度SKU:SEN0189，包括信号调节、电源单元、ATMega16PU微控制器模块、LCD 16 x 2字符和个人电脑（PC）。该测量系统用于测量印度尼西亚南加里曼丹马尔塔普拉的水质。测量的物理参数是水的。传感器通过穿过水中悬浮颗粒的光来测量浊度。电压信号的传感器输入的输出信号通过端口A0与ATMega16A PU微控制器相连。电压信号输出与浊度成反比。通过与HACH DR 890色度计浊度计的比较，得出了传感器特性方程。将得到的特征方程计算为五个方程，得到一个小的误差值，其中v1=-0.0036k1+4.0834，v2=-0.0024k2+3.9351，v3=-0.003k3+4.1777，v4=-0.0033k4+4.3355，v5=-0.0034k5+4.4315，五个方程具有不同的测量范围。数据测量结果用Delphi.7接口程序显示在16x2字符的液晶显示器和个人电脑上。个人计算机（PC）接口的优点是数据测量结果可以用excel和数据库格式进行监测和存储。测量仪器的结果显示，差异为1 NTU至15 NTU，最大偏差为±28.7，标准偏差为±4.57，范围为31 NTU至510 NTU
{"title":"Sistem Alat Ukur Kekeruhan Berbasis Mikrokontroler ATMega16A-PU","authors":"Muhammad Mispu Ariadi, I. Sugriwan, A. Fahrudin","doi":"10.20527/flux.v1i1.6154","DOIUrl":"https://doi.org/10.20527/flux.v1i1.6154","url":null,"abstract":"The fabrication of the ATMega16A-PU microcontroller-based the system turbidity sensor consists of sensor module Turbidity SKU:SEN0189 including with the signal conditioning, power supply unit, the ATMega16A-PU microcontroller module, LCD 16 x 2 character, and personal computer (PC). The measuring system is used to measure the quality of water on theriverMartapura South Kalimantan, Indonesia. The physical parameters that measured is the of water. The measuring of turbidity detected by the sensor through the light that traverse the suspended particles in water. The output signal from the sensor in from of the voltage signal is connectedwith ATMega16A-PU microcontroller viaport A0. The voltage signal output is inversely proportional to the turbidity. Theequation of sensor characteristic is obtained by comparing the measuring device with HACH DR 890 Colorimeter turbid meter gauge. The characteristic equation obtained is counted into five equations to get a small error value, where v1 = -0.0036k1 + 4.0834, v2 = -0.0024k2 + 3.9351, v3 = -0.003k3 + 4.1777, v4 = -0.0033k4 + 4.3355, v5 = -0.0034k5 + 4.4315, the five equations have different measurement ranges. The result of data measurement are displayed on the LCD 16 x 2 character and the personal computer (PC) with the Delphi.7 interface program. The advantages of personal computer (PC) interface are the data measurement result could monitor and stroge in excel and database format. The results of the measuring instrument show a difference of 1 NTU to 15 NTU with the largest deviation is ± 28.7 and a standard deviation of ± 4.57 in the range of 31 NTU to 510 NTU","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41404178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：