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"ABSTRAKThis study discuss business plan rubber plantation at Bangka next year. The reason is the capital to start rubber plantation in medium-scale at Bangka are still relative low and could bring a high return for a long period. Author expects from this study, author can get a lot of good information about rubber plantation, and it will come from business entity and local farmer that have a great experience. Author also gets information from the books, newspaper, and internet, which discuss how to manage rubber plantation, so it can minimize the risk of failure. There is a good opportunity in the rubber plantations business, because a high demand for natural rubber this time, also many parts of the rubber plant itself, that can be used or sold, so the author can maximize the income from rubber plantations. To implement this agribusiness project, author will establish a new company with a core business as rubber plantation company called PT.Binex. The author expect in a long run this company could become go public company, that can contribute significant not only for Bangka?s rubber industry, but also for national rubber industry, so it could bring employment for Indonesian people, especially in Bangka. In addition, the company is expected to provide a high level of investment (ROI) for the shareholder, higher than deposit rate of return. At the beginning, the company will be run as a family business, so the main management functions will become a job desk for the members of the family. To maintain and develop the company, author will need a good business strategy with a high competitiveness, so can bring competitive advantage for the company. The growth strategies are divided into two parts, namely internal growth strategies and external growth strategies. Therefore, author will try to apply some of this business strategy which accordance for rubber plantation. The conclusion from this business plan is prospect of a rubber plantation business actually is still good, although there must be a tidal experienced for author at beginning. Author has a long-term plan to develop PT.Binex not only as a rubber plantation companies, but also develop into a company that able to process natural rubber latex and other parts of rubber plants into finished goods. Author also hopes the corn plant, which is an additional commodity crops for the company, can provide a significant contribution, so that companies can maximize profits. Therefore, the author will learn more about products based on rubber and corn, so can be developed and processed into more valuable products that can be directly sell to end consumer."

"Fenomena rewetting pada celah sempit persegi selama proses quenching berhubungan dengan manajemen termal ketika terjadinya suatu kecelakaan nuklir, baik kecelakaan karena kehilangan air pendingin maupun kecelakaan lain yang mengakibatkan lelehnya teras reaktor nuklir. Untuk itu perlu dilakukan penelitian tentang hal tersebut di atas agar didapatkan pemahaman yang benar tentang keselamatan reaktor nuklir dari sisi pendinginan khususnya fenomena rewetting di celah sempit persegi selama proses quenching dan juga dapat berguna bagi perbaikan desain reaktor generasi selanjutnya.Penelitian difokuskan pada penentuan suhu, waktu, dan kecepatan rewetting di celah sempit persegi berukuran 1 mm dengan 3 variasi suhu awal pelat persegi dan 3 variasi laju aliran air pendingin. Eksperimen dilakukan dengan menginjeksikan air pada laju aliran 0,1-0,3 liter/detik pada suhu air pendingin 85oC. Data transien suhu hasil pengukuran direkam melalui sistem akuisisi data. Data tersebut digunakan untuk mengetahui suhu transien pendinginan celah sempit persegi dan menentukan suhu, waktu, dan kecepatan rewetting dari proses quenching tersebut.Penelitian ini bertujuan untuk memperoleh data eksperimen perubahan suhu dinding pelat panas selama proses quenching pada celah sempit persegi, memahami fenomena rewetting pada proses quenching pada celah sempit persegi, dan mempelajari pengaruh suhu awal pelat panas dan laju alir air pendingin terhadap rewetting. Hasil yang diperoleh menunjukkan bahwa pada suhu 205°C dengan debit aliran 0,1-0,3 liter/detik, suhu rewetting terletak pada rentang 201,38-205°C, waktu rewetting terjadi pada 0 detik dan kecepatan rerata rewetting pada 0 meter/detik. Pada suhu 400°C dengan debit aliran 0,1-0,3 liter/detik, suhu rewetting terletak pada rentang 358,66-387,5°C, waktu rewetting terjadi pada 2,73-44,48 detik, dan kecepatan rewetting pada 0,0094-0,1037 meter/detik. Pada suhu 600°C dengan debit aliran 0,1-0,3 liter/detik, suhu rewetting terletak pada rentang 426,63-480,55°C, waktu rewetting terjadi pada 34,77-88,23 detik, dan kecepatan rerata rewetting pada 0,0025-0,0072 meter/detik.Dari penelitian ini menunjukkan suhu terjadinya rewetting akan meningkat seiring dengan kenaikan suhu permukaan pelat panas persegi. Pada suhu permukaan pelat panas persegi yang sama, semakin besar debit aliran air pendingin yang dilewatkan melalui celah sempit maka waktu dan kecepatan rewetting yang dibutuhkan untuk mendinginkan permukaan pelat persegi tersebut akan semakin cepat. Meningkatnya suhu pelat panas persegi bagian tengah pada suatu debit aliran yang sama akan menyebabkan semakin lamanya waktu yang dibutuhkan oleh air pendingin untuk melakukan rewetting. Dapat diperkirakan bahwa gelembung uap yang terbentuk akibat pemanasan pelat persegi tersebut bergerak ke atas dan mengakibatkan terjadinya counter current yang menghambat laju aliran air pendingin untuk melakukan pendinginan celah sempit persegi.

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Rewetting phenomena on a rectangular narrow gap during quenching process is related to thermal management when the occurrence of a nuclear accident due to loss of coolant accident or other kind of accidents resulting in core melted. In order to address the problem, it is crucial to conduct research to get a better understanding of nuclear safety reactor regarding to cooling especially in rewetting phenomena in a rectangular narrow gap during quenching process. The influence of the initial temperature of the hot plate and cooling water flow rate of rewetting was also observed.The study focused on determining the temperature, time, and velocity of rewetting in 1 mm narrow gap with 3 variations of the initial temperature of hot plates and 3 variations of the cooling water flow rate. Experiments were carried out by injecting water into the hot plate whose temperature ranging from 205 to 600°C at a flow rate 0.1-0.3 liters/sec to 85°C cooling water temperature. Data of transient temperature measurements were recorded using a data acquisition system in order to record the temperature, time, and velocity of rewetting during the quenching process.This study aims to understand the phenomenon of rewetting during the quenching process and to study the influence of the initial temperature of the hot plate and cooling water flow rate of rewetting on a rectangular narrow gap. The results shows that at 205°C with a flow rate 0.1-0.3 l/s, rewetting temperature range 201.38 - 205°C, rewetting time occurred at 0 second, and average rewetting velocity is 0 m/s. At 400°C with flow rates 0 - 0.3 l/s, rewetting temperature is 358.66 ? 387.5°C, the rewetting time is 2.73 ? 44.48 seconds, and average rewetting velocity is 0.0094 - 0.1037 m/s. At 600°C with flow rates from 0.1- 0.3 l/s, rewetting temperature range from 426.63 to 480.55°C, the rewetting time from 34.77 ? 88.23 seconds, and the average rewetting velocity from 0.0025 -0.0072 m/s.The results indicates that rewetting temperature will increase with rising temperature of rectangular hot plate. At the same temperature of hot plate, the greater flow rate of cooling water passed through a rectangular narrow gap the faster the resulted time and velocity of rewetting will be. Increasing the temperature of the hot plate on the center plate in a similar flow rate will cause the length of time required by the cooling water for rewetting. It is estimated that the amount of gas formed by heating a rectangular plate moved up and resulted a counter current that inhibits the cooling water flow rate in the cooling of rectangular hot plate."

"Untuk meningkatkan keselamatan termal pada saat terjadi kecelakaan akibat station blackout, vertical straight wickless-heat pipe pipa kalor lurus tanpa sumbu kapiler yang diletakkan secara vertikal diusulkan sebagai sistem pendingin pasif baru untuk pembuangan panas sisa hasil peluruhan di kolam penyimpanan bahan bakar bekas nuklir. Pipa kalor akan membuang panas peluruhan dari kolam penyimpanan bahan bakar bekas nuklir dan dapat menjaga sistem tetap aman. Tujuan penelitian ini adalah untuk menginvestigasi karakteristik, fenomena perpindahan kalor, dan unjuk kerja termal pipa kalor yang digunakan mencari pengaruh kecepatan pendinginan dengan besarnya kalor yang harus dibuang, menganalisis keserupaan dimensi dari pipa kalor yang digunakan, dan mengetahui teknologi pipa kalor yang dapat digunakan sebagai sistem keselamatan pasif di instalasi nuklir pada kondisi kecelakaan akibat station blackout. Investigasi secara eksperimen dilakukan dengan mempertimbangkan pengaruh tekanan awal pipa kalor, evaporator filling ratio, beban kalor evaporator, dan laju aliran pendingin di water jacket. Air pendingin disirkulasikan dalam water jacket sebagai penyerap kalor di bagian condenser. Simulasi dengan program perhitungan termohidraulika RELAP5/MOD3.2 dilakukan untuk mendukung dan membandingkan dengan hasil eksperimen yang didapatkan. Hasil eksperimen menunjukkan bahwa unjuk kerja termal terbaik pipa kalor didapatkan pada tahanan termal 0,016 C/W. Unjuk kerja termal terbaik didapatkan pada saat pipa kalor diberikan filling ratio 80 , tekanan awal terendah, laju aliran pendingin tertinggi, dan beban kalor evaporator tertinggi. Dari nilai tahanan termal tersebut didapatkan bahwa pipa kalor ini memiliki kemampuan memindahkan kalor 199 kali lebih besar jika dibandingkan dengan batang pejal tembaga dengan geometri yang sama. Model pipa kalor dalam simulasi dengan RELAP5/MOD3.2 dapat digunakan untuk mendukung investigasi secara eksperimen dalam memprediksi fenomena yang berlangung di bagian dalam pipa kalor. Analisis dimensi dan keserupaan pipa kalor yang didapatkan bisa digunakan untuk merancang pipa kalor lain dengan geometri yang berbeda namun tetap menghasilkan unjuk kerja termal yang sama. Kesimpulan investigasi yang dilakukan menunjukkan bahwa pipa kalor ini memiliki unjuk kerja termal yang tinggi dan dapat digunakan sebagai sistem pendingin pasif di kolam penyimpanan bahan bakar bekas nuklir pada saat terjadinya kecelakaan akibat station blackout.

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To enhance the thermal safety when station blackout accident occurs, a vertical straight wickless heat pipe is proposed as a new passive residual heat removal system in nuclear spent fuel storage pool. The heat pipe will remove the decay heat from nuclear spent fuel pool and keep the system safe. The objective of this research is to investigate the characteristics, heat transfer phenomena, and thermal performance of heat pipe, to analyse the effect of coolant flowrate against heat to be removed, analysing the dimensional similarity of heat pipe, and to know the heat pipe technology that could be used as passive safety system in nuclear installation during to station blackout accident. The experimental investigation was conducted to investigate the heat transfer phenomena and heat pipe thermal performance with considering the influence of heat pipe initial pressure, evaporator filling ratio, evaporator heat load, and coolant volumetric flow rate of water jacket. Cooling water was circulated in water jacket as condenser cooling system. A numerical simulation with nuclear reactor thermal hydraulic code RELAP5 MOD3.2 was performed to support and to compare with the experimental results. The experimental results showed that the best thermal performance was obtained at thermal resistance of 0.016 C W, with filling ratio of 80 , the lower initial pressure, higher coolant volumetric flow rate, and higher heat load of evaporator. From thermal resistance analysis, it is found that the heat pipe has the ability to remove heat 199 times greater than copper rod with the same geometry. The RELAP5 MOD3.2 simulation model can be used to support experimental investigation and to predict the phenomena inside the heat pipe. The dimensional analysis and similitude of the heat pipe can be applied to design the other heat pipe with different geometries with produces the same thermal performance. The conclusion of investigation showed that vertical straight wickless heat pipe has higher thermal performance and can be used as passive residual heat removal system of nuclear spent fuel pool when station blackout occurs."

"Plastik merupakan senyawa polimer hidrokarbon petrokimia yang memiliki nilai tambah dan densitas energi yang tinggi. Namun plastik yang tidak diolah dengan baik menyebabkan berbagai pencemaran lingkungan. Maka proses konversi plastik menjadi bahan kimia dengan nilai tambah melalui perengkahan dengan metode katalitik pirolisis dikembangkan. Dalam penelitian ini dilakukan sintesis zeolit H/ZSM-5 dengan metode hidrotermal dan Low Temperature Synthesis (LTS) yang selanjutnya dikarakterisasi menggunakan XRD, FTIR, SEM, BET dan TGA. Kemudian dilakukan perengkahan pada plastik jenis Low Density Polyethylene (LDPE) dengan teknik thermalgravimetrik dengan rasio campuran antara LDPE dan Katalis (9:1). Didapatkan hasil yang diurutkan sesuai performa H/ZSM-5 H2 (∆T50 = 20.46oC) > H/ZSM-5 H1 (∆T50 = 20.26oC) > H/ZSM-5 M (∆T50 = 16.55oC) . Energi aktivasi didapatkan dengan menggunakan persamaan Arrhenius dan Coats-Redfern dengan orde reaksi sama dengan satu. Didapatkan energi aktivasi untuk H/ZSM-5 H2 209 kJ/mol, H/ZSM-5 H1 271 kJ/mol, dan H/ZSM-5 M 277 kJ/mol.

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Plastic is a petrochemical hydrocarbon polymer compound that has a high added value and high energy density. However, plastic that is not treated properly causes a variety of environmental pollution. Then the process of converting plastics into chemicals with added value through cracking with the pyrolysis catalytic method was developed. In this research, the synthesis of zeolite H / ZSM-5 using the hydrothermal method and Low Temperature Synthesis (LTS) was then characterized using XRD, FTIR, SEM, BET and TGA. . Then cracking is done on plastic type Low Density Polyethylene (LDPE) with thermalgravimetric technique with a mixture ratio between LDPE and catalyst (9: 1). The results are sorted according to performance H / ZSM-5 H2 (∆T50 = 20.46oC) > H / ZSM-5 H1 (∆T50 = 20.26oC)> H / ZSM-5 M (∆T50 = 16.55oC). The activation energy is obtained using the Arrhenius and Coats-Redfern equations with a reaction order equal to one. Activation energy obtained for H/ZSM-5 H2 209 kJ / mol, H /ZSM-5 H1 271 kJ / mol, and H/ZSM-5 H1 277 kJ / mol."

"Current cascade solar desalination systems can convert sea water into fresh water, but they can only produce small quantities. To produce more fresh water, there is a solution that can be applied, i.e. modification of the existing desalination system by adding thermosyphons. The objective of this research is to design a cascade solar desalination system with integrated thermosyphons and to establish its ability to produce fresh water. The experimental study was conducted by adding an aluminum absorber plate as a heat absorber in the upper tub, and nine copper thermosyphons with each length of 60 cm in the bottom of the tub. Thermosyphons with an inclination angle of 15° were used as a solar energy absorber and heat enhancer for sea water. The experiment was performed with varying sea water flow rates of 3600, 7200, and 10800 mL/h, and levels of sea water in the upper tub of 2, 3, and 4 cm. To compare the amount of fresh water obtained from the utilization of the thermosyphons, we also used the cascade solar desalination system without the thermosyphons. The results show that the cascade solar desalination system with integrated thermosyphons was able to produce an average amount of fresh water of 38.6 mL/h, with an average daily thermal efficiency of 18.78%. On the other hand, the same system without the thermosyphons produced on average 9.9 mL/h of fresh water, with an average daily thermal efficiency of 8%. The results indicate that the use of thermosyphons in the cascade solar desalination system can increase fresh water productivity by up to 3.89 times, and increase the thermal efficiency of the system by up to 2.35 times."

"Pemahaman citra tubuh yang keliru tentang ?kurus itu indah? menjadi idaman bagi remaja puteri. Hal ini sering menjadi penyebab masalah, karena untuk memelihara kelangsingan tubuhnya dan ketakutan menjadi gemuk mendorong remaja untuk menerapkan pembatasan makanan yang berlebihan, sehingga kebutuhan gizinya tidak terpenuhi yang nantinya akan berakibat terjadinya kurang gizi. Tujuan penelitian ini adalah untuk mengetahui pengaruh citra tubuh terhadap perilaku makan dan Indeks Massa Tubuh (IMT) pada siswi SMA Negeri 12 Jakarta Timur kelas X dan XI tahun 2014. Penelitian ini dilakukan pada bulan April - Mei 2014 dengan desain cross sectional, sampel penelitian adalah 238 siswi. Hasil penelitian dengan menggunakan analisis jalur menyimpulkan bahwa terdapatnya pengaruh citra tubuh terhadap IMT melalui perilaku makan dan aktivitas fisik, membuktikan bahwa citra tubuh tidak langsung berpengaruh terhadap IMT, namun masih harus dilihat bagaimana perilaku makan serta aktivitas fisik yang dilakukan oleh responden. Oleh karena itu diperlukan adanya upaya untuk membangun keyakinan hidup sehat berkaitan dengan berat badan, bentuk tubuh, perilaku makan yang baik serta gizi seimbang. Selain itu, perlu diadakan kegiatan penyuluhan gizi secara berkala kepada remaja dengan materi penyuluhan tentang citra tubuh dan perilaku makan terutama tentang makanan yang seimbang dan berat badan yang ideal bagi remaja putri.

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"Thin is beautiful" is an erroneous understanding of body image that becoming a dream for every teenage girls right now. This is often the cause of problems, because to maintain her slimness and fear of becoming obese encourage teenagers to apply excessive dietary restrictions, so that their nutritional needs are not met which will be result in the occurrence of malnutrition. The aim of this study is to determine the influence of body image against eating behavior and body mass index (BMI) among 10th and 11th grades 12th East Jakarta States Senior High School?s female students in 2014. This study was conducted in April - May 2014, with cross sectional design, the study sample was 238 female students.

The results of this study using path analysis concluded that the presence of the influence of body image against BMI through eating behavior and physical activity, proved that the body image does not directly influence the IMT, but remains to be seen how eating behavior and physical activity undertaken by respondents. Therefore, efforts are required to empower our teenagers by challenging unhealthy beliefs they may have regarding weight, shape, and eating behavior. In addition, there should be regular nutrition counseling activities for teenagers with education material about body image and eating behavior, especially on a balanced diet and ideal body weight for teenage girls."

"Penelitian ini bertujuan untuk mengetahui pengaruh occupational self-efficacy, learning goal orientation, dan grit terhadap pembelajaran informal yang terjadi pada karyawan organisasi sektor publik khususnya pada instansi ABC. Partisipan penelitian ini adalah 172 pegawai instansi ABC. Data dikumpulkan dengan menggunakan alat ukur pembelajaran informal, occupational self-efficacy, learning goal orientation dan grit serta dianalisis menggunakan alat analisis SPSS versi 23. Hasil penelitian menunjukkan bahwa occupational self-efficacy memprediksi pembelajaran informal secara positif dan signifikan. Data juga menunjukkan bahwa learning goal orientation tidak memprediksi pembelajaran informal secara signifikan setelah mengontrol pengaruh occupational self-efficacy. Terakhir, grit memprediksi pembelajaran informal secara positif dan signifikan setelah mengontrol pengaruh dari occupational self-efficacy dan learning goal orientation. Selanjutnya, peneliti merancang sebuah program intervensi pelatihan daring untuk meningkatkan efikasi diri pegawai karena variabel occupational self-efficacy terbukti paling kuat memprediksi pembelajaran informal pegawai pada instansi ABC. Pelaksanaan pelatihan secara pelatihan daring diharapkan dapat menjadi sebuah alternatif bentuk pelatihan lain bagi instansi ABC untuk memperkaya desain pelatihan konvensional yang selama ini sudah dilakukan oleh instansi ABC, terutama selama pandemi COVID-19 ini.......This study aims to determine the effects of occupational self-efficacy, learning goal orientation and grit on employees informal learning that occur at ABC agencies. The participants were 172 employees from ABC agencies. Data were collected using informal learning, occupational self-efficacy, learning goal orientation and grit scales and analyzed using SPSS analysis tool. The results showed that occupational self-efficacy predicts informal learning positively and significantly. Data also showed that learning goal orientation does not significantly predict informal learning after controlling the effect of occupational self-efficacy. Finally, grit predicts informal learning positively and significantly after controlling the effect of occupational self-efficacy and learning goal orientation. Moreover, researcher designed an pelatihan daring intervention program to improve employee self-efficacy because the occupational self-efficacy variable was proven to be the strongest predictor of informal learning for the employees at the ABC agencies. It is hope that pelatihan daring can become an alternative training form for ABC agencies to enrich conventional training designs that have been carried out so far by the ABC agencies, especially during the COVID-19 pandemic."