Judul: Karakteristik Udara Atas Wilayah Bandar Udara Soekarno-Hatta Menggunakan Program RAOB Studi Kasus Tahun 2007-2008
Abstrak: This paper describes the upper air characteristic using the RAOB program. The focus is in significant level of upper air vertical stability, the significant level describe by Level of Free Convective (LFC), Lifting Condensation Level (LCL) and Convective Condensation Level (CCL). This research was using sounding data from Soekarno-Hatta air port at December 2007 to November 2008. The upper air characteristic is very different in every few month because the implication of seasonal change in object area. The comparison between rainy season (December-January-February) and dry season (June-July-August) had shown the different pattern of upper air characteristic and diurnal variation. The different amount of wet air for this two group of months was describe using cross section from RAOB program application
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Judul: Potensi Parameter Keluaran RAOB (Rawinsonde Observation Programs) sebagai Indikator Kunci dalam Analisis Curah Hujan
Abstrak: One of the weather elements that strongly influences human activity is rainfall. RAOB (Rawinsonde Observation Programs) is a tool in analyzing events related to rainfall. This study utilizes observational rainfall data over a period of one year, and radiosonde data series of 3 hours and 6 hours before the occurrence of rain obtained from NOAA (National Oceanic and Atmospheric Administration). This study aims to understand the technique of determining rainfall indicators and analyzed the output of RAOB program to determine RAOB index that affect the most to rainfall. It also aims to further screen the parameters into three main categories of rainfall events, namely, heavy, and light. This study reveals that Cap Strength, Vorticity Generation Parameter, and Total CAPE parameters collected 6 hours prior to the occurrence of heavy rainfall are potentially good predictors. The index of TQ calculated 3 hours prior to the occurrence of heavy rainfall is also a good potential predictor. For the occurrence of light rainfall, K-Index parameter obtained at 6 hours prior to the events is the only significant predictor. Meanwhile, important predictors obtained at 3 hours prior to the events are the Hybrid Microburst Index, Jefferson Index and K-Index. In addition, other potentially prospective indicators include 500 mb Wind speed, Strom Relative Helicity, and SWEAT Index. Mathematical relationships of rainfall data as dependent variable and the selected parameters strongly suggest the existence of linearity component in the relationships.
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Judul: Acute Oral Toxicity Lethal
Dose 50 (LD50) of Cayenne Pepper (Capsicum annuum) Infusion in DDY Strain
Mice (Mus musculus)
Abstrak: In recent years, there has been a growing interest in herbal remedies such as cayenne pepper which is known for its versatility beyond its culinary use. Cayenne pepper’s phytochemicals, including capsaicinoids, carotenoids, phenolic compounds, vitamins, and minerals, offer antioxidant, antimicrobial, and antiinflammatory properties, making it a valuable ingredient in various fields such as veterinary medicine, agro-food, cosmetics, and pharmaceuticals. However, concerns regarding the potential risks of cayenne pepper consumption as herbal medicine arise. This study aims to determine the acute oral toxicity lethal dose 50 (LD50) of cayenne pepper infusion in female DDY strain mice and its effects on the mice's organs. The research involved 20 DDY strain female mice divided into 4 groups which are control group (administered with distilled water) and treatment groups that are given cayenne pepper infusion at doses of 5, 10, and 15 g/kg BW orally. The observed variables included mortality, clinical symptoms, physiological responses, and organ weight. Acute toxicity testing indicated that the cayenne pepper infusion falls into the category of practically non toxic formulations. Administration of the cayenne pepper infusion up to a dose of 15 g/kg BW did not induce toxicity symptoms, such as clinically pathological symptoms, macro anatomical organ changes, or mortality nor affect both weight gain and loss.
Keyword: cayenne pepper, infusion, acute oral toxicity, DDY strain mice, herbal medicine