Judul: The Dynamic of HIV Virus Infection as a Result of Protease Inhibitor Therapy.
Abstrak: Acquired immunodeficiency syndrome (AIDS) is defined as symptoms of deterioration human immune system caused by human immunodeficiency virus (HIV). The virus damages the leucocytes; therefore, once a person infected by the HIV, his/her immune system will be paralyzed and eventually will not be able to survive from any disease. HIV is transmitted in many ways, such as having unsafe sex, using unsterilized syringe, blood transfusion, and many more. So far, there has not been discovered yet a way or a medicine that can totally cure this disease. However, reverse transcriptase inhibitor therapy, protease inhibitor, or combination of those two can decline the growth of virus inside the body of the infected person. Therefore, the immune system will be enhanced back to normal phase. In this paper, will analyze the effect of protease inhibitor therapy on the dynamics of virus inside the blood with different value of effectiveness. There are two mathematical models of protease inhibitor therapy to consider, i.e. perfect and imperfect protease inhibitor. The perfect protease inhibitor therapy hinders the virus to grow well and not to infect healthy leucocytes. On the other hand, the imperfect one cannot completely detained the virus growth.
Keyword: 

Judul: Comparison of HIV Model with and without Time Delay
Abstrak: Acquired immunodeficiency syndrome (AIDS) is the reduction of the human immune system. AIDS is caused by human immunodeficiency virus (HIV). No medicine has been found for this desease until recently. An AIDS therapy is usually performed with highly active antiretroviral therapy, namely reverse transcriptase inhibitors, protease inhibitors and combination of both. Various models have been developed to explain the immune system of patients with AIDS, namely the HIV, response and the time delay model. This paper discusses the comparison between the dynamics of the HIV virus, the dynamic response of protease inhibitors and dynamics of time delay. The dynamics model of HIV is influenced by the level of white blood cells produced and the rate of its death. Dynamics of protease inhibitors on the response and the time delay model is influenced by the death rate of infected white blood cells and the failure rate of treatment.
Keyword: 

Judul: Keanekaragaman jenis rumput laut di Pantai Jayanti kabupaten Cianjur Jawa Barat
Abstrak: Penelitian keanekaragaman jenis rumput laut di pantai Jayanti, Kabupaten Cianjur Jawa Barat dimulai dengan pengambilan spesimen pada bulan Agustus 1999 dan Januari 2000, dilanjutkan dengan pembuatan spesimen herbarium basah dan kering serta identifikasi. Dari hasil identifikasi didapatkan 51 jenis rumput laut meliputi 15 jenis Chlorophyta, 10 jenis Phaeophyta dan 26 jenis Rhodophyta Chlorophyta terdiri dari 8 marga yaitu: Anadyomene, Boergesenia, Boodlea, Caulerpa, Codium, Enteromorpha, Halimeda dan Ulva Phaeophyta meliputi 3 marga yaitu: Sargassum, Turbinaria dan Padina. Sedangkan Rhodophyta terdiri dari 16 marga yaitu: Acanthophora, Amansia, Amphiroa, Botryocladia, Chelosporum, Galaxaura, Gelidiella, Gigartina, Gracilaria, Hypnea, Jania, Laurencia, Merysthothecha, Peyssonnelia, Rhodymenia dan Spesies 1. Satu jenis Phaeophyta (Sargassum sp), empat jenis Rhodophyta (Botryocladia sp. Gigartina sp, Gracilaria sp.1 dan Gracilaria sp 2) belum teridentifikasi nama jenisnya, satu spesimen Rhodophyta (spesies 1) bahkan belum diketahui nama jenis maupun marganya. Hasil ini merupakan catatan baru dalam keanekaragaman ganggang di Indonesia terutama di pantai Jayanti.
Keyword: