Judul: Studi Regenerasi Kentang (Solanum Tuberosum) Kultivar Desiree Secara In Vitro
Abstrak: Penelitian ini terdiri dari dari 2 jenis pereobaan. Percobaan pertama yaitu regenerasi tanaman dengan menggunakan eksplan daun. Percobaan kedua yaitu regenerasi dengan eksplan batang. Bahan tanaman yang digunakan adalah planlet kentang cv. Desiree yang berumur 2 bulan. Penelitian ini menggunakan rancangan acak lengkap yang terdiri dari dua faktor. Faktor pertama adalah 1M (0, 0.1, 0.2 mg/l) dan faktor kedua adalah SAP (0.5, 1.0, 2.0 ,3.0, 4.0 mg/l).
Keyword: 

Judul: Keragaan fenotipik daya regenerasi dan pengumbian beberapa kultivar kentang transgenik (Solanum tuberosum L.) secara in vitro
Abstrak: Penelitian ini dilakukan dengan tujuan mempelajari keragaan fenotip 15 kultivar kentang (11 transgenik dan 4 non transgenik) dalam hal daya regenerasi dan potensi pengumbiannya pada media kultur tertentu secara in vitro serta mutu umbi yang dihasilkan. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Lengkap satu faktor yaitu kultivar kentang. Terdapat dua macam percobaan yaitu Regenerasi Tunas dari Eksplan Daun Secara In Vitro (percobaan I) dan Pengumbian Mikro (Percobaan II). Pada percobaan I digunakan media MS di- tambah 21P 2 mg/1, GA3 0.1 mg/1, NAA 0.01 mg/1, sukrosa 21 dan agar-agar 7 g/1. Pada percobaan II digunakan media MS ditambah sukrosa 3% dan Ca-P 4 ppm untuk pertunasan dan media MS ditambah BAP 5 mg/1, CCC 600 mg/1 dan sukrosa 9% untuk pengumbian. Dari percobaan I diperoleh hasil bahwa sampai 12 MST perbedaan yang nyata dalam hal jumlah kalus rata-rata terdapat antara kultivar Nocksack non transgenik dengan kultivar-kultivar transgeniknya. Perbedaan ini diduga disebabkan oleh pengaruh faktor genetik (jenis isolat) yang mempengaruhi perimbangan zat pengatur tumbuh dalam sel. Setelah 12 MST semua kultivar yang diuji mampu membentuk tunas. Persentase pertunasan tertinggi dicapai oleh kultivar Desiree, Desiree 4060 KS dan Desiree 201 KR (100%), sedangkan persentase yang terendah terdapat pada kultivar EBA, EBA 201 KR dan Nocksack 201 KS (10%). Tidak terdapat perbedaan yang nyata dalam hal jumlah tunas antara kultivar-kultivar transgenik dengan kultivar-kultivar non transgeniknya kecuali antara Desiree 201 KS dengan Desiree dan Nocksack 201 KS dengan Nocksack. Sampai 12 MST kultivar Desiree 4060 KS mempunyai jumlah tunas rata-rata tertinggi (8.6/botol) dibanding kultivar-kultivar transgenik lainnya dan jumlah ini tidak berbeda nyata dengan kultivar non transgeniknya yaitu Desiree (9.8/botol). Sedangkan jumlah tunas rata-rata terendah terdapat pada kultivar EBA dan EBA 201 KR sebesar 0.1/botol. Tunas-tunas yang dihasilkan oleh berbagai kultivar kentang transgenik mempunyai penampakan fenotipik normal seperti kultivar non transgeniknya.
Keyword: 

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