Judul: Isolat bakteri salmonella dan leukosit dari anak-anak penderita diare di puskesmas Sindang Barang Bogor
Abstrak: Diarrhea is a disease that can cause death to children in developing countries. One of the bacteria which can cause diarrhea is Salmonella bacteria. This research intend to isolate and identify Salmonella sp. bacteria from faeces samples children diarrhea in Puskesmas Sindang Barang, Bogor. There are about 100 samples of faeces was taken with rectal swab method and saved in 1ml sterile buffer saline then isolated 24 – 48 hours in SSA. Blood samples were taken from finger then count the leucocytes with the Simmon method. From isolation method there are about eight isolates of Salmonella sp. bacteria suspects. Biochemical tests which are performed on this method are Metyl Red test, Voges Proskauer test, Urea test, H2S test, KCN test, citrate test, Indole test and gram stain. From biochemical test there are about five isolates which showed sign of physiological of Salmonella sp. bacteria. The leucocytes count varied from leucopenia to normal.
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Judul: Salmonella, leukosit, dan hematokrit dari penderita diare di Puskesmas Cangkurawok, Dramaga, Bogor
Abstrak: Salmonella is one of bacteria that can cause diarrhea with the infasive mechanism, which can influence the system immune. The objective of this research is isolating Salmonella from diarrhea’s faeces and knowing the number and differentiation of leucocyte, and hematocryte value of diarrhea patient. The faecal samples were isolated in SSA media. The identification of isolates based on gram staining and biochemical assay through MR (Methyl Red), VP (Voges Proskauer), urease, H2S, KCN, indole, and citrat. Hematogram analysis include hematocryt value, number of leukocytes, and calculated the percentage of leukocyte differentiation type. Five of 100 faecal samples showed that they had black colonies in SSA media. Then based on the biochemical assay, three of those samples had characteristic of Salmonella bacteria, positive result in MR and citrate, and negative in VP, urease, H2S, KCN, and indole. The patients who identified as Salmonella carrier had the normal hematocryt value, normal and low number of leucocyte, and the varying presentation of leucocyte differentiation.
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Judul: Pemodelan Nilai Opsi Tipe Eropa
Abstrak: Option is the right to sell or buy a specified quantity of some underlying asset by paying a specified exercise price, on or before an expiration date. There are two basic types of options, calls and puts. A call option is the right to buy and a put option is the right to sell the underlying asset. There are two types of options according to its execution time, i.e. American and European options. American options can be exercised at any time the holder wishes until the expiration date, while European options can only be exercised on the expiration date. Modelling of option price usually is done analytically by determining solution of differential equation that is satisfied by the price of derivative asset, known as Black-Scholes equation. Because option price is a reflection of present value of expectation of difference between the exercise price and the stock price at expiration date, so it is necessary to study the option price through the concept of present value, as an alternative way to model the option price. The result of this study shows that modelling of option price using differential equation method and present value approach give the same option price. Furthermore the results of ilustration give informations about the relation of the option price with its parameters as follow: First, increase in the current stock price causes the call option price also to increase, while the put option price, on the contrary, will decrease. Second, increase in the exercise price causes the call option price to decrease, while the put option price will increase. Third, the longer the expiration time the call option price will be higher, while the put option price doesn’t have the same tendency, but it depends on other parameters. Fourth, increase in the interest rate causes the call option price to increase, while the put option price will decrease. Finally, increase in the volatility causes the price of both call option and put option will increase.
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