Judul: Uji Kemampuan Infusa Kayu Secang (Caesalpinia sappan L.)  sebagai Sediaan Analgesik pada Mencit (Mus musculus)
Abstrak: Pain becomes an unpleasant thing for everyone who feels it. With the development of the times, there are more people who use herbal plants as an alternative medicine. Sappan wood is one of the herbal plants which has analgesic properties. This research aims to investigate the effectiveness of sappan wood infusion as an analgesic in various doses in mice. Analgesic effectiveness test was carried out using the hot water immersion tail-flick test method. For the purpose of the study, it uses 25 male mice which were the negative control group, positive control group, infusion of sappan wood at doses of 1, 3, and 5 g/kg BW. Each experimental group consisted of 5 mice. The collected data were analyzed using analysis of variance (ANOVA) and continued with the Tukey test. The results showed that the infusion of sappan wood was able to provide an analgesic effect at the most effective dose at a dose of 1 g/kg BW. Compound in sappan wood that act as analgesics are flavonoids, alkaloids, and saponins. The conclusion of this study is that the infusion of sappan wood can be used as an alternative for safe and inexpensive analgesic preparations. Keywords: analgesic, herbal medicine, infusion, mice, sappan wood, Nyeri menjadi suatu hal yang tidak menyenangkan bagi setiap orang yang merasakannya. Semakin berkembangnya zaman, masyarakat semakin banyak memanfaatkan tanaman herbal sebagai pengobatan alternatif. Kayu secang merupakan salah satu tanaman herbal yang memiliki khasiat sebagai analgesik. Penelitian ini bertujuan untuk mempelajari efektivitas infusa kayu secang sebagai analgesik dalam berbagai dosis pada mencit. Uji efektivitas analgesik dilakukan melalui metode hot water immersion tail-flick test. Penelitian menggunakan 25 ekor mencit jantan yang dikelompokkan menjadi kelompok kontrol negatif, kontrol positif, infusa kayu secang dosis 1, 3, dan 5 g/kg BB. Setiap kelompok percobaan terdiri atas 5 ekor mencit. Hasil perolehan data dianalisis menggunakan analysis of variance (ANOVA) dan dilanjutkan dengan uji Tukey. Hasil penelitian menunjukkan bahwa infusa kayu secang mampu memberikan efek analgesik pada mencit dengan khasiat paling efektif pada dosis 1 g/kg BB. Senyawa dalam kayu secang yang berperan sebagai analgesik adalah flavonoid, alkaloid, dan saponin. Kesimpulan dari penelitian ini adalah infusa kayu secang mampu digunakan sebagai alternatif sediaan analgesik yang aman dan murah. Kata kunci: analgesik, infusa, kayu secang, mencit, obat herbal
Keyword: analgesik, infusa, kayu secang, mencit, obat herbal, analgesic, herbal medicine, infusion, mice, sappan wood

Judul: Effectiveness of Cinnamon (Cinnamomum burmanii) Infusion as an Analgesic Effects and Stamina Enhancer in Male Mice (Mus musculus)
Abstrak: Kayu manis merupakan tanaman herbal yang memiliki beragam khasiat bagi kesehatan. Penelitian ini bertujuan mempelajari efektivitas infusa kayu manis sebagai analgesik dan peningkat stamina tubuh hewan. Penelitian ini menggunakan 20 ekor mencit jantan galur Deutschland Denken Yoken yang dikelompokkan menjadi 4 kelompok perlakuan dengan tiap kelompok terdiri atas 5 ekor mencit. Kelompok perlakuan dibagi menjadi kelompok mencit kontrol dan mencit perlakuan yang diberi infusa kayu manis dengan dosis 1, 2, dan 4 g/kg BB. Perlakuan dilakukan secara peroral dengan 3 kali ulangan dengan selang waktu satu hari. Pengujian pada uji analgesik dengan metode tail immersion flick test dan uji stamina dengan metode forced swim test. Data yang diperoleh dianalisis menggunakan one way analysis of variance (ANOVA) yang dilanjutkan dengan uji Tukey. Hasil penelitian menunjukkan bahwa pemberian infusa kayu manis pada mencit jantan mampu memberikan efek analgesik pada dosis 4 g/kg BB dan mampu meningkatkan stamina pada dosis 2 dan 4 g/kg BB. Kesimpulan penelitian ini ialah kayu manis memiliki potensi sebagai analgesik dan peningkat stamina., Cinnamon is a herbal plant that has various health benefits. This research aims to study the effectiveness of cinnamon infusion on analgesic effects and to increase stamina for animals body. This study used 20 male mice of the Deutschland Denken Yoken strain which were grouped into 4 treatment groups with each group consisting of 5 mice. The treatment group was divided into control mice and treatment mice that were given cinnamon infusion at doses of 1, 2, and 4 g/kg BW. The treatment was carried out peroral with 3 repetitions with an interval of one day. The analgesic test uses the tail immersion flick test and the stamina test uses the forced swim test. The data obtained were analyzed using one way analysis of variance (ANOVA) followed by the Tukey test. The results of the study showed administrating cinnamon infusion to male mice was able to provide an analgesic effect at a dose of 4 g/kg BW and was able to increase stamina at a dose of 2 and 4 g/kg BW. The conclusion of this research is that cinnamon has the potential as an analgesic and stamina enhancer.
Keyword: kayu manis, stamina, analgesik, mencit, obat herbal

Judul: Kajian Atmosfer Bawah Wilayah Tropis dan Subtropis
Abstrak: Planetary Boundary Layer is the lowest part of the atmosphere directly affected by the earth’s surface and responds to surface forcings within a time period of hourly to daily. The thickness of boundary layer varies over space and time, ranging from hundreds of meters to a few kilometers. The objective of this study consist of the analysis of Boundary Layer based on diurnal and nocturnal vertical profiles of meteorological properties and identification of characteristics pertaining to tropical atmosphere (represented by Soekarno-Hatta (6.110S, 106.650E), Polonia (3.560N, 98.680E), and Da Nang (16.030N, 108.200E) stations) and subtropical atmosphere (represented by Perth (31.930S, 115.960E), Nanjing (32.000N, 118.800E), and Hakasskaja (43.780N, 87.620E) stations). Virtual potential temperature, specific humidity, wind speed and direction, atmospheric stability, and Bulk-Richardson number are used to estimate the boundary layer thickness. Vertical profile of the virtual potential temperature and specific humidity are used to determine the Mixed Layer heights during the day and Residual Layer heights during the night. On the other hand, the mean value of Turbulent Flow Thickness is derived from the vertical profile of the Bulk-Richardson number (RiB). Analytical results of this study revealed that Mixed Layer height in the tropical atmosphere varies in a range from 260 m to 1410 m, Residual Layer height varies in a range from 267 m to 925 m, whereas the Turbulent Flow Thickness variation is confined between 0 m to 335 m. In subtropical atmosphere Mixed Layer height varies in a range from 101 m to 1483 m, Residual Layer height varies in a range from 121 m to 1276 m, whereas the Turbulent Flow Thickness variation is confined between 0 m to 769 m. This study also revealed that, except during summer, Mixed Layer Heights in the tropics are normally higher than in the subtropics.
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