5 research outputs found
PEMBUATAN DAN KARAKTERISASI EMULSI KOSMETIK BERBAHAN BAKU VIRGIN COCONUT OIL (VCO)
A study about preparation and characterization of cosmetics emulsion
based Virgin Coconut Oil (VCO) has been done. The good emulsion must comply
the quality requirement of cosmetic (SNI 16-4399-1996) which includes
appearance, pH, viscosity and the Sun Protection Factor (SPF). Preparation of
cosmetic emulsion was done with various concentration of VCO 1-25% and
cosmetic emulsion without VCO as control. The cosmetic emulsions were
characterized included the emulsion stability by using pH test and viscosity test
during four weeks of storage, droplet size measurement test, phase separation by
centrifugation test and UV absorption to determine SPF values.
The result showed that the cosmetic emulsion can provide absorption of
UV C region. The increasing of VCO concentration in cosmetic emulsion
decreased pH and viscosity of the emulsion but increased droplet size and SPF
value. Stability test during storage showed that the pH of emulsion was stable and
the viscosity increased with the increasing of the storage time. Centrifugation test
showed no phase separation for all emulsions. Cosmetic emulsion with
concentration of VCO 7% has the best cosmetic emulsion with homogeneous
appearance, pH 6.94 to 6.96 and a viscosity of 295 poise, while the SPF criteria,
all emulsion cosmetic emulsions does not fulfilled that the quality requirement of
cosmetic in Indonesia
PELATIHAN �MENEMUKAN LANGKAH TERBAIKKU� UNTUK MENINGKATKAN KETERAMPILAN PENGAMBILAN KEPUTUSAN KARIR PADA SISWA MAN
The main objective of this research was to produce strong and elastic
cocofoam from a mixture of coconut fiber and latex compound. The preparation of
cocofoam was conducted by a mixing method. The coconut fiber was arranged in a
mold then sprayed by latex compound. The cocofoam was molded in 5, 10, and 15
cm thickness then vulcanized in an oven at temperature of 80oC. Characterizations of
produced cocofoam included mass density, tensile strength, elongation at break, fixed
CF5-1 � CF15-3 compression of 50 and 80%, microstructure analysis (SEM), and
cocofoam samples thermal stability test (TGA-DTA) respectively.
The results of the research showed that the best cocofoam vulcanization was
obtained from at the temperature of 80oC. The cocofoam in 5, 10, and 15 cm
thickness needed a vulcanization time of 4, 6 and 8 h, respectively. Cocofoam has a
mass density of 0.6032 � 0.8867 g/cm3, larger thatof polyurethane foam of 0.3580 �
0.4075 g/cm3. Means that cocofoam was heavier than polyurethane foam. The greater
the mass density of cocofoam, the greater the value of its tensile strength. The
elongation at break of cocofoam was influenced largely by the orientation of random,
wavy, and unevenly spreading fiber, so that the rupture of cocofoam occurred only in
the area that undergo a tension concentration and forces acting across longitudinal
section. The cocofoam have a fixed compression value of 50 and 80%, which are
larger than the compression value of polyurethane foam rubber, suggesting that
polyurethane foam rubber was more stable in sustaining a heavy weight as compared
with the cocofoams. Obsolescence test showed that the latex damaged and could no
longer sustain a weight after being heated at 105-115oC for 150 min. The
microstructure analysis showed that the whole surface of cocofoam has different
cavities and the latex compound served as an immiscible distributed adhesive. TGA
curve showed that the thermal property of cocofoam was influenced by the thermal
property of latex compound, that is, the preparation of cocofoam was limited by the
latex compound as a matrix. The increasing ratio of coconut fiber to latex compound
(CF5-1 = 10 : 25. CF5-2 = 20 : 55 and CF5-3 = 30/85) gave the width of endothermic
peak at DTA curve becoming greater and sharper, due to the greater ratio of the latex
compound bound the fiber
Surveilans Mers Under Investigated Case Rumah Sakit Penyakit Infeksi Prof. Dr. Sulianti Saroso Tahun 2014-2019
Latar Belakang: Middle East Respiratory Syndrome (MERS) adalah suatu strain baru dari virus corona. Surveilans kasus MERS terdiri atas surveilans di pintu masuk negara dan surveilans wilayah. Laporan surveilans MERS pada kasus MERS Under Investigated Case yang dirawat di Sulianti Saroso bertujuan untuk memberikan gambaran secara menyeluruh tentang pelaksanaan surveilans MERS dalam rangka kewaspadaan dini pada periode tahun 2014-2019. Metode: deskriptif, data sekunder, berjumlah 93. Hasil: Kecenderungan kasus MERS Under Investigated Case menurun. Jumlah kasus rawat inap MERS mayoritas pada usia diatas 45 tahun (82%), dan berdasarkan jenis kelamin lebih besar pada laki-laki (52%). Asal wilayah kasus sebesar 33% berasal dari luar wilayah Jabodetabek. onfirmasi jika hasil pemeriksaan laboratorium positif dan sepanjang tahun 2014-2019, hasil pemeriksaan laboratorium kasus MERS Under Investigated Case yang dirawat RSPI SS adalah negatif. Kesimpulan dan saran: Tidak ada kasus positif MERS, surveilans berkelanjutan disarankan sebagai upaya kewaspadaan dini penyakit new emerging dan re-emerging