Bengkulu city is well-known as a high-risk area for an earthquake. One of the effects of the earthquake is liquefaction, the phenomenon in which the strength and stiffness of the soil are reduced by shock. The researchers measured the quantity of liquefaction by knowing the value of Vs30 values that can be obtained from the United States Geological Survey (USGS). In this study, however, we measured liquefaction based on the shear strain value (γ). Here, the shear strain values could be determined by measuring the seismic vulnerability index and the peak ground acceleration. The vulnerability index was obtained by measuring the resonance of the frequency and the amplification factor using a short period seismometer with 3 components (2 horizontal components and 1 vertical component), whereas the peak ground acceleration was obtained from the earthquake data that happened in Bengkulu City in 2000. The result showed that Vs30 and shear strain negatively correlated.

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Aspect ratio which is the ratio between the length and diameter of the fiber affects the sound absorption performance of the polymer reinforced natural fiber (ramie or bamboo fiber). The aim of this study is to choose the specific frequency –which is important for industrial application- to obtain an optimal sound absorption coefficient (α) by designing a certain aspect ratio.The acoustic was measured using impedance tube of The ASTM E- 1050=98 standard. Fiber length was 10 mm, while the diameter of the fiber was measured by using a digital optical microscope measurement with an average diameter of 110.4 microns. The morphology of the material was observed by using scanning electron microscope (SEM). Fourier Transform Infrared (FTIR) spectroscopy was used to identify the presence of certain functional groups in a molecule. The results indicated that the average of the sound absorption coefficient of the polymer reinforced ramie fiber reached 0,836 at low frequency of 125 Hz and 0,537 at medium frequency of 1000 Hz, and aspect ratio of 90, while the sound absorption coefficient of the polyester material reinforced bamboo fiber reached 0.973 at medium frequency of 1000 Hz.

Komposit merupakan salah satu material yang dikembangkan sebagai material penyerap suara. Sebelumnya sudah diteliti mengenai penguat dalam komposit penyerap suara menggunakan serat tandan kosong kelapa sawit. Akan tetapi, penelitian sebelumnya masih dilakukan penelitian untuk prosesnya dan belum diaplikasikan untuk penguat komposit penyerap suara. Sehingga dibuatlah penelitian yang bertujuan untuk mengetahui pengaruh proses alkalisasi pada serat tandan kosong kelapa sawit terutama pada pemisahan selulosa dari lignin serat tersebut. Penelitian ini menggunakan NaOH 2% sebagai pelarut pada proses alkalisasi serat tandan kosong kelapa sawit. Pengujian yang dilakukan yaitu uji FTIR pada serat tandan kosong kelapa sawit tanpa perlakuan dan dengan perlakuan alkalisasi. hasil uji FTIR menunjukkan serat tandan kosong kelapa sawit dialkalisasi secara kurang optimal dengan masih menyisakan sebagian kadar lignin yang ditunjukkan dengan masih terdapatnya peak gugus aromatik C=C pada rentang 1200-1300 cm-1 .

Muslims are taught to eat clean and safe food. Islam is very concerned about the source and cleanliness of food, how to cook, how to serve, how to eat to how to dispose of leftovers.  The concept of Islam in food is actually the same as the concept of Islam in other respects, namely the concept that maintains the safety of the soul, body, and mind.  Halal food is allowed because it benefits the mind and body.  Conversely, bad food is not allowed because it will damage the mind and body. The research method used was descriptive qualitative research methods. Data obtained from a variety of literature that discusses The Effects of Haram Food on Human Emotional and Spiritual Intelligence Levels, both in the form of books and journals. Data collection techniques by means of literature study, data analysis needed in library studies obtained from a number of references in the form of books, journals, encyclopedias, documents and others that are considered to have a relationship and can support the solution of existing problems.Data was analyzed by using qualitative data analysis techniques. Halal food and haram both have a big influence on someone's life, both influential for morals, peace of mind, and fulfillment of prayer. People who always fill themselves with halal food, then the morals will be good, his heart will be calm and his prayers will be answered. Conversely, people who fill themselves with haram food will be bad in character, their hearts will be sick, and their prayers will not answered.