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Efisiensi adalah kemampuan untuk melakukan sesuatu dengan cara yang tidak boros atau dengan hasil yang maksimal. Dalam konteks rumah hunian, efisiensi dapat diartikan sebagai kemampuan untuk menghemat sumber daya, seperti energi, air, dan uang. Smarthome adalah rumah yang dilengkapi dengan perangkat elektronik yang dapat dikendalikan secara otomatis menggunakan perangkat seluler atau komputer. Perangkat- perangkat tersebut dapat digunakan untuk mengontrol berbagai hal di rumah, seperti suhu, pencahayaan, keamanan, dan hiburan. Rumah hunian adalah bangunan yang berfungsi sebagai tempat tinggal atau hunian dan sarana pembinaan keluarga. Rumah hunian tidak hanya memenuhi kebutuhan fisik manusia, seperti tempat berteduh dari cuaca buruk, tetapi juga memenuhi kebutuhan psikologis manusia, seperti tempat untuk merasa aman, nyaman, dan betah. Secara fisik, rumah hunian harus memenuhi persyaratan keselamatan, kesehatan, dan kenyamanan. Rumah hunian harus kokoh dan tahan terhadap cuaca buruk, serta memiliki ventilasi dan pencahayaan yang baik. Rumah hunian juga harus bersih dan nyaman untuk dihuni. Secara psikologis, rumah hunian harus dapat memberikan rasa aman, nyaman, dan betah bagi penghuninya. Rumah hunian harus dapat menjadi tempat untuk beristirahat, berkumpul bersama keluarga, dan mengembangkan diri.

The purpose of this research is to examine several hypotheses regarding the relationships between accessibility, perceived price, facilities, visitor satisfaction, and revisit intention at Taman Safari Cisarua Bogor. This study involved 203 respondents residing in the Jakarta, Bogor, Depok, Tangerang, and Bekasi areas, with the requirement that respondents be at least 18 years old and have visited Taman Safari Cisarua Bogor at least once in the past three years. Data collection was conducted through surveys using questionnaires, and the data were analyzed using SPSS and Amos software. The results of the study indicate that perceived price and facilities have a positive and significant effect on visitor satisfaction. Additionally, accessibility and visitor satisfaction also have a positive and significant effect on revisit intention. However, the study found that accessibility does not have a positive and significant effect on visitor satisfaction, and facilities do not have a positive and significant effect on revisit intention.

Sectio caesarean is a surgical process involving an incision that is very risky and causes many complications for the human body. One of the complications caused by an intra-cesarean section is hypothermia. Hypothermia is a medical emergency that occurs when the body loses heat faster than it produces warmth. When the body temperature drops, the nervous system and other organs typically cannot function properly, which in turn affects the functioning of many other organs (Dafiani, 2021). This study aimed to determine the effect of a blanket warmer on the body temperature of intra-cesarean section patients to prevent hypothermia. This quantitative study used a quasi-experimental design (pre-test–post-test with a control group design). Data were collected on intra-section cesarean patients. As many as 35 respondents had been given non-pharmacotherapy therapy in the form of a blanket warmer. The results of the analysis showed that most pregnant women were aged 20–35 years in the no-risk group (91.4%), cesarean section with absolute indication (68.6%), and cesarean section duration < 60 minutes (57.1%). The minimum body temperature of 35.7°C before receiving a blanket warmer, and a maximum body temperature of 36.6°C after receiving one. After carrying out statistical tests using the Wilcoxon test, a P-value of 0.000, or ≤ 0.05, was obtained. In conclusion, blanket warmers influence the incidence of intra-cesarean hypothermia at SMC Telogorejo Hospital. Suggestions for further research include developing variables that can disrupt the thermoregulation system, as well as comparing the use of tools other than blanket warmers to prevent hypothermia before surgery.  

Pengukuran jarak yang akurat merupakan komponen kunci dalam berbagai aplikasi teknologi termasuk robotika, sistem keselamatan, dan kontrol industri. Penelitian ini bertujuan untuk mengevaluasi keakuratan pengukuran jarak benda menggunakan sensor ultrasonik HC-SR04 yang dikendalikan oleh mikrokontroler NodeMCU ESP8266. NodeMCU ESP8266 dipilih karena integrasi Wi-Fi yang memungkinkan data dikirim secara nirkabel ke server untuk analisis lebih lanjut. Metode penelitian ini meliputi pengujian sensor ultrasonik pada berbagai jarak dan kondisi lingkungan untuk mengetahui keakuratan dan konsistensi hasil pengukuran. Hasil pengujian menunjukkan bahwa akurasi sensor ultrasonik menurun seiring dengan bertambahnya jarak pengukuran. Selain itu, kondisi lingkungan seperti suhu, kelembaban, dan permukaan benda juga mempengaruhi keakuratan pengukuran. Oleh karena itu, diperlukan kalibrasi tambahan untuk memastikan ketepatan pengukuran dalam kondisi lingkungan yang bervariasi. Penelitian ini menyimpulkan bahwa sensor ultrasonik berbasis NodeMCU 8266 dapat digunakan sebagai solusi yang efektif untuk aplikasi pengukuran jarak, namun kalibrasi dan penyesuaian diperlukan untuk menjamin keakuratan data pada berbagai kondisi. Hasil ini memberikan kontribusi penting terhadap pengembangan sistem otomasi yang lebih cerdas dan responsif.

Temperature and humidity are inseparable from server rooms. This is important because server rooms consist of computers that provide services 24 hours a day without stopping. After collecting all the supporting data, the author found that the temperature was too high and the humidity did not meet the standard, causing the computer to not function properly. The author finally created a tool that can monitor the temperature and humidity in the server room and applied it to the server room of Roemani Muhammadiyah Hospital in Semarang. The tool works by reading the temperature and humidity using a DHT22 sensor. After the data is read, the ESP32 will process the data, which will then be sent to a database and stored. The data can be viewed directly from anywhere. The tool not only monitors but also performs other functions, such as turning on the AC/fan when the temperature rises above the predetermined limit and sending notifications via Telegram to the staff so that they can take further action.This device will help the staff because all information about temperature and humidity will be recorded well, so the staff does not need to check the server room all the time.

As time goes by, the rapid development of technology has brought various conveniences to people's daily activities.  An example of the continuation of technology is microcontrollers and electronic devices that can be connected to the network. One of them is the industrial sector in the PLTS plant at the 7 Mwp On-Grid PLTS Pt. Infrastructure Terbarukan Cemerlang Sengkol which has PV Box generating equipment that requires temperature and humidity control to determine the cause of corrosion that occurs in the PV Box.This study is intended as a solution in monitoring PV Box generating equipment. This technology development uses the Internet of Things (IoT) which combines the physical and virtual worlds. In this research, the method used is the experimental measurement method, making the system created more real and detailed. In research using DHT11 equipment which has the advantage of being able to estimate temperature and humidity. NodeMCU ESP32 as a microcontroller connected to the blynk platform via the internet functions to manage hardware, show evidence of sensors, secure data, depict data, and others. The results of the research on designing a temperature and humidity monitoring system at the 7 Mwp On-Grid PLTS Pt. Infrastructure Terbarukan Cemerlang Sengkol were successfully created and produced positive effects by being monitored using the blynk platform. This research was carried out in real time using a cell phone wherever you are. This research shows that temperature measurements from the DHT11 sensor obtained an average temperature of 31.78%, while the average humidity value was 85.96%, which indicates that the room being measured had high humidity. By considering these two findings, it can be concluded that the cause of corrosion in the room is high humidity and redox reactions from various substances in the environment.

Pencucian pakaian merupakan salah satu proses yang penting dalam kehidupan sehari-hari. Meskipun mesin cuci otomatis telah memberikan kemudahan dalam melakukan proses pencucian, penggunaan teknologi terbaru seperti kontrol logika fuzzy dapat meningkatkan kinerja mesin cuci pintar untuk mencapai hasil pencucian yang optimal. Penelitian ini bertujuan untuk mengimplementasikan kontrol logika fuzzy dengan metode Mamdani pada mesin cuci pintar guna meningkatkan efisiensi dan kualitas pencucian. Metode penelitian ini terdiri dari beberapa tahap, pertama, melakukan analisis terhadap variabel-variabel yang mempengaruhi proses pencucian, seperti beban pakaian, ketebalan pakaian, tingkat kekotoran, dan suhu air. Selanjutnya merancang sistem kontrol logika fuzzy Mamdani dengan menentukan fungsi keanggotaan untuk setiap variabel serta membuat aturan-aturan fuzzy untuk menghubungkan variabel input dan output dan yang terakhir melakukan evaluasi hasil pencucian terhadap variabel input yang telah ditentukan. Hasil penelitian menunjukkan bahwa implementasi kontrol logika fuzzy Mamdani pada mesin cuci pintar dapat meningkatkan kualitas pencucian yang signifikan dan adaptif dalam menentukan parameter-parameter pencucian dengan menghasilkan kualitas pencucian yang lebih bersih. Dengan demikian integrasi kontrol logika fuzzy Mamdani pada mesin cuci cerdas memiliki potensi meningkatkan kinerja pencucian secara keseluruhan. Kesimpulannya, penggunaan kontrol logika fuzzy Mamdani pada mesin cuci pintar merupakan langkah yang efektif untuk meningkatkan efisiensi dan efektivitas pencucian pakaian. Penelitian ini memberikan kontribusi dalam pengembangan teknologi mesin cuci pintar yang lebih adaptif dan ramah lingkungan, serta memberikan kontribusi penting dalam pengembangan teknologi dalam bidang kontrol logika fuzzy untuk aplikasi rumah tangga pintar lainnya.

Perkembangan teknologi membawa perubahan pada bidang edukasi, termasuk pada bidang edukasi lingkungan. Salah satu komunitas yang bergerak di bidang lingkungan yaitu Jepara Green Generation (Jegeg). Jegeg membutuhkan aplikasi yang memiliki fitur edukasi baik dalam bentuk artikel maupun video, fitur pengenalan tanaman, tempat wisata, tempat konservasi, serta informasi terkait kegiatan peduli lingkungan. Sehingga diperlukan suatu inovasi teknologi sebagai pemantik untuk meningkatkan kepekaan dan kesadaran masyarakat dengan keadaan lingkungan alam sekitarnya. Oleh karena itu, dibuatlah aplikasi Forestrytech yang menggunakan metode design thinking dan pengujian SEQ dan SUS dalam perancangan antarmuka. Aplikasi ini bertujuan untuk menyediakan pemantauan hutan secara real-time yang dapat diakses oleh masyarakat. ForestryTech, sebuah aplikasi pemantauan dan edukasi konservasi hutan berbasis PWA menggunakan algoritma CNN. Selain itu, juga dibuat prototipe alat monitoring hutan berbasis IoT menggunakan ESP32 yang dapat dipantau dan diakses melalui aplikasi. Sistem ini dapat membaca nilai suhu, kelembapan, tekanan udara, api, asap, dan kecepatan angin dengan akurasi yang baik.

Perkembangan teknologi membawa perubahan pada bidang edukasi, termasuk pada bidang edukasi lingkungan. Salah satu komunitas yang bergerak di bidang lingkungan yaitu Jepara Green Generation (Jegeg). Jegeg membutuhkan aplikasi yang memiliki fitur edukasi baik dalam bentuk artikel maupun video, fitur pengenalan tanaman, tempat wisata, tempat konservasi, serta informasi terkait kegiatan peduli lingkungan. Sehingga diperlukan suatu inovasi teknologi sebagai pemantik untuk meningkatkan kepekaan dan kesadaran masyarakat dengan keadaan lingkungan alam sekitarnya. Oleh karena itu, dibuatlah aplikasi Forestrytech yang menggunakan metode design thinking dan pengujian SEQ dan SUS dalam perancangan antarmuka. Aplikasi ini bertujuan untuk menyediakan pemantauan hutan secara real-time yang dapat diakses oleh masyarakat. ForestryTech, sebuah aplikasi pemantauan dan edukasi konservasi hutan berbasis PWA menggunakan algoritma CNN. Selain itu, juga dibuat prototipe alat monitoring hutan berbasis IoT menggunakan ESP32 yang dapat dipantau dan diakses melalui aplikasi. Sistem ini dapat membaca nilai suhu, kelembapan, tekanan udara, api, asap, dan kecepatan angin dengan akurasi yang baik.

Nyeri perut adalah rasa tidak nyaman pada area perut yang dirasakan secara tiba-tiba dikarenakan faktor pertahanan organ dalam tubuh untuk sebisa mungkin mencegah kerusakan pada organ-organ tertentu khususnya didalam perut. Salah satu manajemen nyeri non-farmakologis yang bisa digunakan untuk mengatasi masalah nyeri perut ini adalah dengan menggunakan terapi kompres hangat menggunakan buli-buli panas. Tujuan dari case report ini adalah untuk mengetahui pengaruh pemberian terapi kompres hangat terhadap penurunan skala nyeri pada pasien dengan abdominal pain. Metode yang digunakan dalam penelitian ini adalah studi kasus (case report). Sampel dalam case report ini adalah seorang pasien dengan keluhan utama nyeri perut yang sudah berlangsung berhari-hari, instrument dalam penelitian ini adalah Numeric Rating Scale, alat dan bahan yang digunakan adalah buli-buli dan air panas dengan suhu 40-45◦C. Hasil intervensi yang sudah dilakukan menunjukkan pada evaluasi 10 menit pertama terjadi penurunan skala nyeri menjadi 5, 10 menit kedua evaluasi didapatkan penurunan skala nyeri menjadi 4, dan evaluasi 10 menit ketiga skala nyeri tetap 4 dan dilakukan evaluasi 20 menit berikutnya terhitung 30 menit setelah pemberian analgesik didapatkan skala nyeri menjadi 3. Kesimpulan dari case report ini terdapat pengaruh pemberian terapi kompres hangat menggunakan buli-buli untuk menurunkan tingkat nyeri perut pasien.

Red rose (Rosa damascena Mill) is one of the plant that can be easily found in Indonesia. The corolla of red roses contains natural dyes, namely anthocyanins which can be used as food coloring and the function as antioxidants or counteract free radicals. The corrola of red roses is used as a raw material in distillation of rose water. Rose water distillation poduces is a dark red liquid. This liquid waste has not been utilized optimally. Therefore, that further research is needed to determine the chemical content in it. So that the expected outcome of this research is the best chemical and sensory analysis of red rose water distillation waste based on it's antioxidant activity. The research design used a 2 factor factorial completely randomized design (CRD). The first factor is the variation of the distillation method while the second factor is the heating temperature of the red rose water waste (heated waste). The optimal treatment result was a combination of steam distillation method variations and 70°C heating temperature with following results obtained : 77,32% RSH DPPH, 61,02% FRAP value, 71,20 mg/g vitamin C, 4,58 mg  total phenol.GAE/ g, pH 4,15, anthocyanin 121,93 mg/g, brightness 27,23 (*L), red-green chromatic 7,13 (*a), blue-yellow chromatic 7,54 (*b). Sensory analysis of color was 4.36 (deep red), other scents were 2.47 (slightly sour), rose aroma was 3.64 (strong), and overall preference was 3.75 (liked).

The cereal products available in the market mostly focus only on practicality and ignore the nutritional content. It is necessary to increase the nutritional content of these products by using local Indonesian raw materials such as sweet potatoes and corn.  The objectives of this study are: 1) to determine the effect of temperature and proportion of purple sweet potato flour and corn flour on the characteristics of cereals produced, 2) to assess the level of preference of panelists for the physical, chemical and sensory qualities of cereals produced. The study design used a factorial randomized design complete with a proportion treatment of purple sweet potato flour and corn. Test parameters include water content, degree of swelling, water absorption, texture, antioxidants, and sensory evaluation. The conclusion in this study is that the comparative treatment of purple sweet potato flour and corn and temperature did not have a real effect on water content, degree of development, water absorption index (IPA), water solubility index (IKA), texture and antioxidants but had an effect on sensory properties

The impact of LBW poses many risks regarding problems in the body's system due to unstable body condition which can cause death. The causes of LBW are due to fetal factors, placental factors and maternal factors. Preeclampsia is a problem of serious maternal factors and has a high level of complexity. The results of the preliminary study in 2021 totaled 34 people with preeclampsia and 60 cases of low birth weight babies. Research objective is to determine the effectiveness of compresses of warm water and hibiscus leaves in lowering the body temperature of toddlers in the Banua Lawas Health Center area. The research methods is Quasi-experimental research with a pre-test-post-test research design without a control group. A sample of 30 people were divided into warm water compress groups and hibiscus leaf compress groups. Collecting data by observing according to SOP (Standard Operating Procedure). Data analysis using wilxocon. Resulted that the mean temperature in the warm water compress group before being given was 36.9°C and after being given was 36.3°C (the difference was 0.58°C). The average temperature in the hibiscus leaf compress group before being given was 36.8 °C and after being given 36.1 °C (the difference was 0,33 °C). There is a difference between warm water compresses and hibiscus leaves in reducing temperature in toddlers with fever in the Banua Lawas Health Center area (p-value ˂ 0.000). Concluded that both types of compresses are effective in reducing body temperature in children with fever but warm water compresses are more effective than hibiscus leaf compresses.

This research highlights the comparison of the effectiveness of warm water tepid sponge compresses and fever plasters on body temperature in pre-school children with Febris at the Tanah Abang District Health Center, Jakarta, which will be carried out from December 2023 to January 2024. This research uses a quantitative approach with a Two research design Group Pretest Posttest. The sample for this research consisted of 32 pre- school children who would be divided into 2 groups, for each compress treatment with inclusion & exclusion criteria. The instrument used was an observation sheet in the form of a table check list regarding the SOP for implementing warm water tepid sponge compresses and fever plaster compresses. As well as an observation sheet in the form of a body temperature observation sheet before, during and after the warm water tepid sponge compress and fever plaster. Research Results Description of the temperature before and after using a warm water tepid sponge compress before it was 38,530C and after it was 37,370C and using a Plaster Compress before it was 38,350C and after it was 37,660C. The results of the dependent t statistical test showed that the warm water tepid sponge   had a p value of 0.000 and the Fever Plaster had a p value of 0.000, meaning that there was an effect of warm water tepid sponge compresses and fever plasters on body temperature in pre-school   children with Febris   at the Tanah Abang District Health Center, Jakarta. will be carried out in December 2023. The results of the independent T test show that the p value is 0.000, so there is a difference between the Warm water tepid sponge Compress group and the Fever Plaster group on the body temperature of pre-school children with fever at the Tanah Abang District Health Center and compresses using the warm water tepid sponge technique are more effective in reducing body temperature. The difference in degrees of reduction in body temperature is -0.481.

Snack bars are processed food products that shaped rectangular or like a bar. Snack bar in this study used ingredients of barley flour and mocaf. Barley is a potential ingredient as a source of dietary fiber and gluten-free mocaf can fix the texture of barley. One of the factors that affects the quality of the snack bar is the baking process. The purpose of this study was to determine the effect of temperature and baking time on the characteristics of physical, chemical, and sensory of the snack bar, and to determine best formulation of the temperature and baking time of the snack bar. The design applied was a completely randomized design with two factors consisting baking temperature of 130 and 160°C, and baking time of 20 minutes and 40 minutes. The results showed that baking time had a significant effect on the values of a and b, but not significant on the value of L. Baking temperature and time had a significant effect on the level of preference for texture, color, overall and on texture and color on sensory quality. However, it had no significant effect on aroma and taste. The baking temperature had a significant effect on the moisture content, but roasting time had no significant effect. The best snack bar was that baked at 160ºC, 20 minutes. The best formulation of snack bar contains nutrients, water content of 15%, ash of 1.906%, fat 19.447%, protein 21.012%, carbohydrates 42.635%, dietary fiber 11.262% and total calories 429 kcal.

Green mussels (Pernan viridis) are a marine resource that has good protein content. Of these advantages, there are disadvantages, namely the relatively short shelf life. The method used in this research is organoleptic testing (including texture, appearance, color and odor), pH and weight loss. The aim of this research is to determine the storage time of green mussels at room temperature. The results obtained in the organoleptic test where the appearance of the buffer lasted for 4 hours, the aroma for 4 hours, and the texture for 5 hours. The initial pH was found to be 7.14 after storage for 12 hours at room temperature, the pH was 6.53 and there was a decrease in weight loss of 11 g. From this research it was found that the longer the storage time, the quality of green mussels (verna piridis) will decrease.

Menurut data dari BPJS, kecelakaan kerja yang terjadi di Indonesia pada bulan Januari hingga November 2022 sebanyak 265.334 kasus. Jumlah ini meningkat 13,26 persen dibandingkan 234.270 kasus pada tahun 2021. Data tersebut menjadi peringatan keras bahwa pelaksanaan keselamatan dan kesehatan kerja (K3) harus semakin menjadi perhatian. UD Cantenan menggunakan beberapa mesin, bahan-bahan kimia dan suhu yang tinggi, dan hampir seluruh proses dilakukan masih secara manual tanpa alat bantu dan dioperasikan langsung. Berdasarkan obeservasi yang dilakukan terdapat 34 risiko kecelakaan kerja yang terdapat pada bagian proses produksi dan tercatat ada 14 kasus kecelakaan kerja yang terdapat pada bagian produksi di Ud Cantenan, data tersebut diambil dari bulan Febrari tahun 2020 hingga bulan Juli tahun 2023. Metode JSA digunakan untuk menentukan pekerjaan yang dianalisis serta mengidentifikasi risiko pada masing-masing pekerjaan, Metode FMEA difungsikan untuk mengidentifikasi tingkat risiko kecelakaan kerja yang mengukur dari aspek dampak, peluang kejadian dan pencegahaannya dilakukan, sedangkan metode FTA digunakan untuk mengdentifikasi potensi penyebab kecelakaan. Dari hasil analisis data diketahui bahwa 5 failure mode dengan nilai RPN terbesar yaitu, terkena tumpahan logam cair,, tergulung putaran chuck mesin turning, tersengat listrik, tergulung putaran mata pahat milling dan mata terkena sekrap logam sisa produksi, ke lima failure mode dengan nilai RPN tertinggi yaitu fm 14, fm 27, fm 31 dengan nilai RPN 75 dan fm 22, fm 28 dengan nilai RPN 64. Nilai RPN tertinggi nantinya akan dilakukan analisis FTA untuk mengetahui akar penyebab masalah dan diberikan rekomendasi untuk perbaikan, untuk FM 14, 21, dan 38 memiliki tiga akar masalah, sedangkan fm 27 dan 28 memiliki 4 akar masalah.

Fever is a condition where the body temperature increases from normal limits to a temperature of >38°C. Fever is a sign that body temperature has a process to fight infection, body temperature >37.5°C can be classified as fever which can be caused by auto-immunity and infection (Alwiyah et al, 2019). The aim of this research is to find out whether there is an effect of giving Aloe compresses. Vera on the body temperature of children in the working area of ​​the Kuma Health Center, Central Tabukan District, Sangihe Islands Regency.This research was conducted using a quasi-experimental method with a one group pretest and posttest design. Sampling used accidental sampling technique with 12 subjekts. The intervention was carried out by giving an Aloe Vera compress for 20 minutes, measuring body temperature using a digital thermometer. The data analysis used is the Wilcoxon statistical test.The results of this study showed that there was a decrease in body temperature in the subjekts after the Aloe Vera compress was applied. The results of the analysis using the Wilcoxon test obtained a P value = 0.002 where (a=<0.05).The conclusion of the research is that there is an effect of giving Aloe Vera compresses on body temperature in children in the working area of ​​the Kuma Health Center, Central Tabukan District, Sangihe Islands Regency. It is hoped that parents will gain new knowledge to treat fever in children, not only using pharmacological measures but also using Aloe Vera as initial treatment for children with fever.

Penelitian ini bertujuan untuk membuat dan menganalisis karakteristik nanokalsium dengan metode presipitasi dari limbah cangkang sotong. Presipitasi dilakukan menggunakan NaOH 3N. Selain itu penelitian ini dirancang untuk mengetahui kondisi optimum proses ekstraksi nanokalsium dari cangkang sotong melalui Response Surface Methodology(RSM) menggunakan desain faktorial dengan 30 perlakuan. Pengujian dilakukan untuk mengetahui pengaruh variabel bebas (konsentrasi pelarut, lama waktu ekstraksi dan suhu ekstraksi) terhadap respon kadar kalsium, derajat putih dan rendemen pada nanokalsium cangkang sotong.  Hasil Penelitian ini menunjukkan bahwa optimasi proses ekstraksi nanokalsium cangkang sotong dengan metode Response Surface Methodology (RSM) diperoleh pada perlakuan ekstraksi dengan konsentrasi HCl (X1) 2 N, waktu ekstraksi (X2) 1,5 jam dan suhu ekstraksi (X3) 93ºC, sedangkan nilai optimasi respon yang dihasilkan dari kadar kalsium (Y1) 58,2 x105mg/g, derajat putih (Y2) 97,53%  dan rendemen (Y3) 4,59 %.  Konsentrasi optimum ekstraksi nanokalsium cangkang sotong memiliki nilai derajat keinginan (desirability) 0,98

. Electrical energy is a primary need for every human being. Supercapacitors are sophisticated electrical energy storage devices that combine the advantages of conventional batteries and capacitors so that they have the ability to store energy better. The use of electrode materials is one of the factors that affect the effectiveness of supercapacitors, electrode materials can be made from polymeric materials, metal oxides, and porous materials such as activated carbon. Activated carbon is made through two main stages, namely the carbonization and activation stages. Bamboo charcoal is a solid product that uses bamboo raw materials through a carbonization process under high temperatures (high temperature charcoal). This research is a research using experimental method. From the research results, carbonized bamboo charcoal at temperatures of 300˚C, 350˚C, 400˚C, 450˚C and 500˚C has a higher electrical conductivity value as the carbonization temperature increases. So it can be concluded that the temperature in the carbonization process affects the electrical conductivity of bamboo charcoal.