Judul: Pengaruh metode pengolahan terhadap kelarutan mineral keong mas (Pomacea canaliculata) dari perairan Situ Gede, Bogor
Abstrak: Pangan merupakan salah satu kebutuhan dasar manusia. Pemenuhan atas pangan yang cukup, bergizi, dan aman menjadi hak asasi setiap orang. Saat ini, Indonesia menghadapi masalah gizi kurang. Salah satu masalah gizi yaitu kekurangan asupan mineral, diantaranya anemia gizi besi dan osteoporosis. Pemenuhan kebutuhan mineral diperoleh dengan cara mengkonsumsi bahan pangan baik yang berasal dari nabati maupun hewani. Pada makanan nabati jumlah ketersediaan mineral lebih sedikit dibandingkan makanan hewani. Hal ini disebabkan adanya bahan pengikat mineral seperti serat dan asam fitat yang dapat mengganggu penyerapan mineral. Sumber mineral yang paling baik berasal dari makanan hewani, salah satunya adalah keong mas. Pada umumnya keong mas dikonsumsi setelah mengalami proses pengolahan. Metode pengolahan dapat mempengaruhi kelarutan mineral, sehingga dilakukan penelitian mengenai pengaruh metode pengolahan terhadap kelarutan mineral keong mas.
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Judul: Pengaruh metode pengolahan terhadap kandungan mineral keong ipong-ipong (Fasciolaria salmo)
Abstrak: Indonesia telah mencapai berbagai kemajuan dalam memerangi masalah gizi buruk, namun dibalik itu kasus kekurangan gizi mikro (terutama mineral) masih banyak ditemukan seperti osteoporosis dan anemia. Kekurangan gizi mineral ini dapat diatasi dengan cara mengkonsumsi makanan hasil laut. Makanan hasil laut merupakan sumber pangan yang kaya akan komponen mineral. Salah satu hewan avertebrata laut yang berpotensial memiliki kandungan mineral tinggi adalah keong ipong-ipong. Masyarakat kota Cirebon umumnya mengkonsumsi keong ipong-ipong setelah dilakukan proses perebusan sehingga perlu dilakukannya penelitian mengenai pengaruh metode pengolahan terhadap kandungan dan kelarutan mineral keong ipong-ipong.
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Judul: Algorithm construction of HLI hash function
Abstrak: Cryptography is a study of mathematical techniques related to aspects of information security regarding on confidentiality, data integrity, entity authentication, and data origin authentication. Data integrity is a service, which is associated with the conversion of data carried out by unauthorized parties. To maintain data integrity, one can use hash functions. An hash function is a computationally efficient function to map an arbitrary length bitstring to a fixed length bitstring called as hash value. The use of hash function in maintaining the information integrity and authentication is in digital signatures, virus protection, and software distribution. Illustration of the hash function in the integrity and authentication of information that is emailed as follow. The sender sends the information and hash value to the recipient. If the hash value of the information is equal to the hash value that is sent by the sender, then information has not been changed. Otherwise the information has been changed. An hash function has two properties, one way and collision resistance. An hash function is called one way if it is computationally infeasible to find any input such that when given any hash value . Meanwhile an hash function is called collision resistant if it is computationally infeasible to find any two inputs where such that . The purpose of this study is to construct a HLI hash function algorithm, to analyze the speed and security of the hash functions as a results of construction. Furthermore, it is to compare it with SWIFFT. Hash function is constructed based on the result of algebraic operations on modular polynomial ringwith . Modular polynomial ring noted as is a set of all polynomials of degree at most with coefficients in . can be represented as a set of integer vector of modulo in dimension . So, it is simple to implement in a computer. In vector operations, is lattice . Furthermore, alattice that is defined from certain polynomial ring is called ideal lattice. HLI hash function is consists of addition and multiplication algorithm in the ring. Addition algorithm consists of sumation operations of modulo and multiplication consists of multiplication operations of modulo . Generally, algorithm of HLI hash function consists of multiplication operations of modulo and addition operations of modulo . However, if the input is binary number then multiplication algorithm only consists of multiplication operation of modulo , so algorithm of HLI hash function consists of multiplication operations of modulo and addtion operations of modulo . An hash function is secured if it has two properties, i.e., one way and collision resistance. HLI hash function hash is one way, it is following the proof of Micciancio. It is has collision resistant because of polynomial is irreducible over and monic. Moreover, it is proved that for every unit vector , the vector is small vector. If the input of hash function is a binary number then HLI hash function only involves addition operations of modulo . So the time that used almost same with SWIFFT. The excellence of HLI hash function is the key size smaller than SWIFFT. This effect on
Keyword: hash function, modular polynomial ring, lattice