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Abstrak :
Grain refinement is known to lead improvements in strength of material. A complete understanding of how refinement, grain size, and processing affect the corrosion resistance of low carbon steel has not yet been fully developed. Determining a definitive „grain size-corrosion resistance‟ relationship, if one exists, in inherently complex as the processing needed to achieve grain refinement also imparts other changes to the microstructure (such as texture, internal stress, and impurities segregation). This work evaluates how variation in grain size and processing impact the corrosion resistance of SS 400 Low Carbon Steel Structural Steel. SS 400 samples with a range of grain size ~8μm to ~10.5μm, were produced using Thermomechanically Processing (TMP) with multi pass reversible method in warm rolling. Hardness measurement, tensile testing, electrochemical polarization and hydrogen embrittlement (HE) studies have been carried out to assess the mechanical and corrosion behavior of the low carbon steel. By applying rolling deformation process in warm working temperature, low carbon steel will have fine ferrite grain structures made its mechanical properties increased, its corrosion rate decreased and also its ability to absorb hydrogen decreased. The applied mechanisms of pass deformation are reversible which are 20%, 20% +20%, 20% +20% +20% and 20% +20% +20% +20% with initial thickness ho 6 mm. By applying this mechanism, it is expected that fine ferrite grains will influence the corrosion rate of low carbon steel SS 400 structural steel.

Abstrak :
[ABSTRACT
Torus palatinus dan torus mandibularis merupakan eksositosis yang umum ditemukan pada ras Mongoloid, ras dominan di suku Indonesia barat, yang dapat dijadikan bahan identifikasi forensik. Pada beberapa studi, torus palatinus dan torus mandibularis memiliki hubungan bermakna, dimana hubungan ini dapat menjadi data tambahan untuk identifikasi forensik. Penelitian ini bertujuan menilai prevalensi torus palatinus dan torus mandibularis serta hubungan keduanya pada populasi Indonesia bagian barat. Penelitian ini dilakukan pada 274 Mahasiswa Baru Universitas Indonesia tahun ajaran 2014. Hasil penelitian prevalensi torus palatinus 77,4%, prevalensi torus mandibuaris 13,9%, dan ditemukannya torus palatinus dan torus mandibularis secara bersamaan sebesar 12,4% . Pada penelitian ini torus palatinus dan torus mandibularis tidak memiliki hubungan yang bermakna.

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ABSTRACT
Torus palatinus and torus mandibularis are common exocytosis found in Mongoloid race, the dominant inhibitant in west Indonesian tribes, that can be used as forensic identification subject. In numerous study, torus palatinus and torus mandibularis were found as significantly correlated, where as the correlation can be used as another forensic subject.. This study aim to investigate prevalence of torus palatinus, prevalence of torus mandibularis, and correlation between prevalence of torus palatinus and torus mandibularis in west Indonesian population. Sample of the study is 274 student of batch 2014 Univesitas Indonesia students. Result of the study found that prevalence of torus palatinus 77.4%, prevalence of torus mandibularis 13.9%, and prevalence of torus palatinus and torus mandibularis found simultanously is 12.4%. In this study torus palatinus and torus mandibularis shows unsignificant correlation;Torus palatinus and torus mandibularis are common exocytosis found in Mongoloid race, the dominant inhibitant in west Indonesian tribes, that can be used as forensic identification subject. In numerous study, torus palatinus and torus mandibularis were found as significantly correlated, where as the correlation can be used as another forensic subject.. This study aim to investigate prevalence of torus palatinus, prevalence of torus mandibularis, and correlation between prevalence of torus palatinus and torus mandibularis in west Indonesian population. Sample of the study is 274 student of batch 2014 Univesitas Indonesia students. Result of the study found that prevalence of torus palatinus 77.4%, prevalence of torus mandibularis 13.9%, and prevalence of torus palatinus and torus mandibularis found simultanously is 12.4%. In this study torus palatinus and torus mandibularis shows unsignificant correlation;Torus palatinus and torus mandibularis are common exocytosis found in Mongoloid race, the dominant inhibitant in west Indonesian tribes, that can be used as forensic identification subject. In numerous study, torus palatinus and torus mandibularis were found as significantly correlated, where as the correlation can be used as another forensic subject.. This study aim to investigate prevalence of torus palatinus, prevalence of torus mandibularis, and correlation between prevalence of torus palatinus and torus mandibularis in west Indonesian population. Sample of the study is 274 student of batch 2014 Univesitas Indonesia students. Result of the study found that prevalence of torus palatinus 77.4%, prevalence of torus mandibularis 13.9%, and prevalence of torus palatinus and torus mandibularis found simultanously is 12.4%. In this study torus palatinus and torus mandibularis shows unsignificant correlation, Torus palatinus and torus mandibularis are common exocytosis found in Mongoloid race, the dominant inhibitant in west Indonesian tribes, that can be used as forensic identification subject. In numerous study, torus palatinus and torus mandibularis were found as significantly correlated, where as the correlation can be used as another forensic subject.. This study aim to investigate prevalence of torus palatinus, prevalence of torus mandibularis, and correlation between prevalence of torus palatinus and torus mandibularis in west Indonesian population. Sample of the study is 274 student of batch 2014 Univesitas Indonesia students. Result of the study found that prevalence of torus palatinus 77.4%, prevalence of torus mandibularis 13.9%, and prevalence of torus palatinus and torus mandibularis found simultanously is 12.4%. In this study torus palatinus and torus mandibularis shows unsignificant correlation]

Abstrak :
Penelitian ini membahas komponen makna cerdas dan pintar dalam bahasa Indonesia. Kamus Besar Bahasa Indonesia KBBI digunakan sebagai korpus data dalam penelitian ini. Penelitian ini bertujuan untuk menentukan komponen makna cerdas dan pintar, dan relasi makna dari cerdas dan pintar. Teori yang digunakan untuk mencapai tujuan tersebut antara lain teori makna yang berdekatan, teori komponen makna, dan teori relasi makna digunakan untuk tercapainya tujuan tersebut. Hasil dari penelitian ini ditemukan bahwa cerdas memiliki 25 komponen makna, sedangkan pintar memiliki 39 komponen makna. Dari komponen makna ini diperoleh relasi makna antara cerdas dan pintar, yaitu relasi makna sinonim dekat. ......This research analyze component meaning of cerdas and pintar in Indonesian language. Kamus Besar Bahasa Indonesia KBBI is used as corpus data in this research. The aim of this research is to determine component meaning of cerdas and pintar, and to determine semantic relation between cerdas and pintar. To reach the objectives of the research, the researcher used component meaning theory, and semantic relation theory. The result of this research showed that cerdas has 25 component meaning while pintar has 39 component meaning. The result also showed that semantic relation between cerdas and pintar is a close synonym relation.