Judul: Perkecambahan dan Pertumbuhan Embrio Kelapa secara In vitro pada Media dengan Penambahan Bubuk Simplisia Daun Kelor dan Jarak.
Abstrak: Satu solusi yang diajukan untuk mengantisipasi permasalahan pengadaan bibit kelapa, khususnya kopyor adalah menggunakan teknik kultur embrio. Penelitian ini bertujuan menyelidiki pengaruh modifikasi media menggunakan bahan organik yang mengandung beragam senyawa, berupa dekoksi simplisia daun kelor dan daun jarak terhadap perkecambahan dan pertumbuhan embrio kelapa secara in vitro. Metode yang digunakan adalah dengan menambahkan bahan tersebut pada media kultur pada taraf yang diuji, yaitu 50 ppm, 100 ppm, dan 150 ppm dengan pembanding media Y3 modifikasi BAP 5ppm, menggunakan rancangan lingkungan percobaan acak lengkap (RAL) non-faktorial yang diulang sebanyak 10 kali ulangan. Hasil penelitian menunjukkan bahwa perlakuan tidak berpengaruh nyata pada laju perkecambahan dan pertumbuhan embrio kelapa, kecuali karakter panjang daun dan panjang akar. Terdapat kecenderungan berpengaruh terhadap pembentukan organ kecambah. Perlakuan modifikasi media kultur menggunakan simplisia daun jarak mengakibatkan perkecambahan embrio tidak membentuk akar lateral.
Keyword: bahan organik, bibit, kopyor, organ, senyawa

Judul: Pengaruh Penambahan Ekstrak Buah Pisang dan Daun Kelor ke dalam Media terhadap Pertumbuhan Embrio Kelapa (Cocos nucifera L.) secara In Vitro.
Abstrak: Kelapa merupakan komoditas penting di Indonesia maupun di dunia Internasional. Perbanyakan kelapa dapat dilakukan dengan pembiakan melalui metode kultur jaringan. Kultur embrio merupakan salah satu cara yang dapat digunakan dalam kultur jaringan. Tujuan penelitian ini adalah melihat pengaruh penambahan ekstrak buah pisang dan daun kelor ke dalam media untuk perkecambahan kelapa. Penelitian ini menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) faktor tunggal dengan 5 perlakuan, yaitu kontrol, penambahan ekstrak buah pisang 100 g L-1, ekstrak buah pisang 150 g L-1, ekstrak daun kelor 10 ml L-1, dan ekstrak daun kelor 20 ml L-1. Hasil penelitian ini menunjukan bahwa perlakuan kontrol memiliki hasil daya berkacambah paling tinggi namun tidak berbeda nyata terhadap waktu tumbuh dibanding perlakuan lainnya. Eksplan yang menghasilkan persentase akar dan plumula paling tinggi terdapat pada perlakuan kontrol namun tidak berbeda nyata dibanding pemberian ekstrak daun kelor 10 ml L-1. Pemberian ekstrak buah pisang ambon 100 g L-1 dan 150 g L-1 mengalami tingkat kematian dan browning paling tinggi. Pemberian ekstrak daun kelor 10 ml L-1 memiliki persentase panjang plumula paling tinggi pada 12 MST namun tidak berbeda nyata dibanding perlakuan kontrol dan pemberian ekstrak daun kelor 20 ml L-1.
Keyword: daun kelor, kelapa, kultur embrio, pisang

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