Coffee is a drink that has deep meaning in the Islamic world, covering spiritual, health and social aspects. This study method uses a literature approach by collecting and analyzing the latest research regarding the role of coffee in the context of the sunnah, health benefits and social traditions among Muslims. The study results show that coffee is not only considered a halal drink and beneficial for health, but also as a symbol of brotherhood and strong cultural identity, strengthening social relations in various Muslim communities around the world.

Increased economic growth in the city of Parepare with the presence of buildings around the estuary. In general, the composition of concrete making materials is taken from good materials. The problem encountered in the field is that the quality of concrete in construction decreases due to brackish water, causing structural elements in the construction to become porous. Meanwhile, preventive measures are rarely or never taken. As a result, the construction life is very short. Brackish water is one of the causes of structural failure. This is due to the content of sulfate and chloride ions in water containing salt/salts that react with chemical elements in reinforcing steel resulting in corrosion of the reinforcement. The purpose of the study was to analyse the compressive strength of concrete with a mixture of clean water against the percentage of brackish water with a maintenance age of 7, 14, 21, and 28 days. The results showed that brackish water had an impact on reducing the compressive strength of concrete due to the high chemical content in brackish water such as Sulfate (SO²¯) of 52.5 in brackish water in Kenjeran and 62.5 in brackish water in mangrove. Dissolved Solids (TDS) of 15188 mg/l in kenjeran brackish water and 3436 mg/l in mangrove brackish water. Organic Content (KMnO) of 8.05 mg/l in kenjeran brackish water and 6.69 mg/l in mangrove brackish water is too high, so the chemical content contained in brackish water can damage the compounds in the cement content and decrease the strength of the materials contained in the concrete. In this case it can result in concrete having a very low durability.

Quick response code adalah matriks dua dimensi yang dapat menyimpan informasi dalam empat mode pengkodean berbeda. QR Code menawarkan kemudahan dan kecepatan dalam menyimpan dan mengakses informasi sehingga dalam implementasinya terbatas pada penyematan informasi singkat seperti kode produk, tautan  website ataupun kode pembayaran. Pada perkembangannya, QR Code seharusnya dapat mengubah kebiasaan manusia dalam menyimpan informasi akan tetapi hal ini sulit dilakukan karena QR Code memiliki batasan karakter bergantung pada metode pengkodean. Oleh karena itu tujuan dari penelitian ini adalah untuk mengoptimalisasi kapasitas informasi pada QR Code dengan mengkombinasikan  algoritma Huffman dan metode  Rivest Shamir Adleman. Hasil penelitian menunjukan bahwa metode yang diusulkan yaitu flowchart QR Code Generator dan QR Code Reader dapat mengoptimalisasi kapasitas informasi pada QR Code sebesar 81% . Hal ini menunjukan bahwa QR Code versi 40 dengan level L yang memiliki batasan 4296 karakter alfanumerik, dapat dioptimalkan sampai dengan 7775 karakter alfanumerik. Oleh karena itu kesimpulan dari penelitian ini adalah metode yang diusulkan yaitu flowchart QR Code Generator dan QR Code Reader tidak hanya dapat mengoptimalkan kapasitas informasi pada QR Code tapi juga dapat mengamankan informasi yang disematkan pada QR Code dengan tidak mengorbankan kecepatan pemrosesan saat pemindaian.