Judul: Gambaran Gas-Gas darah akibat paparan perinhalasi SO2 (Sulfur dioksida) pada kelinci (Lepus spp.)
Abstrak: Penelitian ini bertujuan untuk mengetahui efek gambaran gas-gas darah (pCO2, PO2, pH) serta kadar hemoglobin pada kelinci lokal yang mengalami pemaparan gas SO2 (Sulfur dioksida). Kelinci di dibagi menjadi 4 kelompok yaitu, kelompok perlakuan dengan paparan SO2 100 ppm (A1), 200 ppm (A2), 300 ppm (A3) dan kelompok kontrol Biochamber (KC). Pemaparan SO2 dilakukan selama 2 jam sehari dan 5 hari dalam seminggu sampai timbul gejala klinis PPOK (Paru- paru Obstruksi Kronis). Pengambilan darah pada kelinci dilakukan setiap minggu melalui arteri auricularis di daerah telinga. Pengambilan darah digunakan untuk pemeriksaan nilai pCO2, pO2, pH dengan menggunakan Blood Gas Analyzer ABL 700 dan Hb menggunakan metode Sahli. Data yang diperoleh di analisis dengan sidik ragam (ANOVA) dan dilanjutkan dengan uji Duncan jika terdapat perbedaan antar perlakuan. Hasil perlakuan yang menunjukkan adanya peningkatan pH, dan rasio HCO3/CO2 serta penurunan pO2 dan Hb. Terjadi mekanisme kompensasi pada kelompok perlakuan walaupun berjalan secara perlahan. Kompensasi dilakukan oleh paru-paru dengan hiperventilasi dan ginjal dengan cara peningkatan ekresi bikarbonat untuk mengurangi konsentrasi bikarbonat plasma dalam tubuh.
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Judul: Gambaran darah pada kelinci penderita penyakit paru obstruksi kronis (PPOK) akibat paparan sulfur dioksida (SO2)
Abstrak: Penelitian ini bertujuan untuk mengetahui efek dari pemaparan SO2 yang menyebabkan terjadinya penyakit paru obstrukis kronis terhadap jumlah sel darah merah, kadar hemoglobin, nilai hamatokrit, dan jumlah sel darah putih. Penelitian ini menggunakan 20 ekor kelinci jantan yang dibagi kedalam lima kelompok. Kelompok pertama adalah kontrol kandang (kelinci tidak dipapar SO2 dan dimasukan ke dalam biochamber), A0 (kelinci tidak dipapar SO2), A1 (kelinci dipapar dengan SO2 100 ppm), A2 (kelinci dipapar dengan SO2 200 ppm), dan A3 (kelinci dipapar dengan SO2 300 ppm). Pemaparan dilakukan selama dua jam perhari, lima hari dalam satu minggu. Sampel darah diambil dari arteri auriuclaris setiap akhir minggu perlakuan. Data yang diperoleh diuji dengan uji sidik ragam (ANOVA) dan dilanjutkan dengan uji Tukey. Hasil penelitian menunjukan adanya peningkatan jumlah sel darah merah dan sel darah putih, serta menurunkan kadar hemoglobin dan nilai hematokrit.
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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