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Pengaruh Ekstrak Daun Sirih (Piper betle Linn.) Terhadap Pertumbuhan Bakteri Streptococcus viridans Harlis, Harlis; Wahyuni, Indah
Biospecies Vol 1, No 1: Biospecies
Publisher : Biospecies

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Abstract

Penelitian ini dilakukan untuk melihat pengaruh dari ekstrak daun sirih terhadap pertumbuhan bakteriStreptococcus viridans penyebab penyakit karies gigi. Rancangan percobaan yang digunakan adalahRancangan Acak Lengkap (RAL) dengan 6 perlakuan konsentrasi (0%, 10%, 30%, 50%, 70% dan 90%).Pengamatan dilakukan terhadap diameter daerah hambat menggunakan kertas cakram. Berdasarkan hasilpenelitian diperoleh rata-rata diameter daerah hambat (zona hallow) tertinggi pada pemberian konsentrasi90%, tidak berbeda nyata dengan konsentrasi 50% dan 70%. Selanjutnya pemberian konsentrasi ekstrakdaun sirih 0% dan 10% memberikan hasil terendah terhadap diameter daerah hambat dan berbeda nyatadengan perlakuan lainnya. Konsentrasi ekstrak daun sirih 50%-90% merupakan konsentrasi yang terbaikdalam menghambat pertumbuhan bakteri Streptococcus viridans.
MOTION TRACKING IN MRI BY HARMONIC STATE MODEL: CASE OF LEFT HEART Wahyuni, Indah; Moyo, Egy Wisnu
UG Journal Vol 8, No 4 (2014)
Publisher : Universitas Gunadarma

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Abstract

We discuss about development of a new method of tracking closed contourwhich is based on a Harmonic State Model (HSM), in order to carry out thetracking of Left Ventricle (LV) during all the cardiac cycle. The Lionelsmethod provides us the trajectories of the I.V contour from the tracking ofmotion during the cardiac cycle, and information necessary to the analysisof the cardiac motion. Using the HSM model allows a robust and correctmodeling of closed contour. The application in simulation of Lionels methodgives satisfactory results. On the real data extracted from MRI sequences,the calculated trajectories, points of the LV contour throughout the cardiaccycle, allow to have a clearly visible difference between a healthy heart anda pathological heart.
BRYOPHYTES OF MOUNT PATUHA, WEST JAVA, INDONESIA GRADSTEIN, ROBBERT; KIEN–THAI, YONG; SULEIMAN, MONICA; PUTRIKA, AFIATRI; APRIANI, DIAN; YUNIATI, ENY; KANAK, FADZILAH AG.; ULUM, FUAD BAHRUL; WAHYUNI, INDAH; WONGKUNA, KANJANA; LUBOS, LESLEY C.; TAM, LUONG THIEN; PUSPANINGRUM, MIKA RIZKI; HJ. SERUDIN, MOHD RAWIYANI PG.; ZUHRI, MUSYAROFAH; MIN, NG AIK; JUNITA, NURLISMA; PASARIBU, NURSAHARA; KORNOCHALERT, SOONTHREE
REINWARDTIA Vol 13, No 2 (2010): Vol. 13 No. 2
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (648.544 KB) | DOI: 10.14203/reinwardtia.v13i2.2132

Abstract

GRADSTEIN, R. et al. 2010. Bryophytes of Mount Patuha, West Java, Indonesia. Reinwardtia 13(2): 107-123. - This paper presents the results of a two-day survey of the bryophyte flora of Mt. Patuha and its surroundings near Bandung, West Java, carried out in the framework of the 5th regional training course on bryophyte and lichen diversity and conservation organized by SEAMEO BIOTROP, Bogor, in July 2009. A total of 159 bryophyte species were identified, including 98 mosses, 60 liverworts, and 1 hornwort, representing almost 1/6 of the total bryophyte flora of Java. Three moss species, Bryohumbertia subcomosa (Dix.) J.-P. Frahm, Fissidens gymnogynus Besch. and F. polypodioides Hedw., and one liverwort, Lejeunea pectinella Mizut., are new additions to the Javanese flora. The bryophyte diversity of Mt. Patuha is well representative of the Malesian flora and is rich in uncommon species. However, the relatively poor representation of shade epiphytes and commonness of sun epiphytes and generalists reflect disturbance of the forest by anthropogenic activities. Careful attention should be given to conservation of the remaining natural forest in order to prevent further losses of the rich bryophyte diversity of the area.
An Investigation on Team Teaching Implemented by Local and Foreign Teachers in Teaching English at SMAN 1 Ketapang Sampang Wahyuni, Indah; Jarum, Jarum
A Journal of Culture, English Language Teaching, Literature & Linguistics. Vol 1, No 2 (2014): November 2014
Publisher : English Language Education Department, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2634.07 KB) | DOI: 10.22219/CELTICUMM.Vol1.No2.31-40

Abstract

An Investigation on Team Teaching Implemented by Local and Foreign Teachers in Teaching English at SMAN 1 Ketapang Sampang
THE EFFECT OF WORKING CAPITAL ON FIRM PERFORMANCE Wahyuni, Indah; Adi Wibowo, Seto Sulaksono
JOURNAL OF APPLIED MANAGERIAL ACCOUNTING Vol 2 No 2 (2018): JOURNAL OF APPLIED MANAGERIAL ACCOUNTING
Publisher : Pusat P2M Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jama.v2i2.946

Abstract

This study aims to examine the effect of working capital on firm performance. To implement the operating activities, the company should be able to manage good working capital. Good working capital management can help to enhance the firm performance in the eyes of investors. In this research, working capital is measured using working capital turnover, inventory turnover, days of supply, and cash conversion cycle as independent variables, while firm performance is measured using net profit margin as the dependent variable. The sample of this research is a manufacturing company listed in Indonesia Stock Exchange (IDX) period 2014-2016. Samples were taken by using purposive sampling and meeting the sample criteria. The anaysis technique used in this research is multiple regression analysis by using t test. The results of the study found that working capital turnover, days of supply, and cash conversion cycle negatively affect the performance of the company. While the variable of inventory turnover shows that inventory turnover has a positive effect on firm performance.
Pembuatan Karbon Aktif Dari Cangkang Kelapa Sawit Dengan Variasi Waktu Aktivasi Wahyuni, Indah; Fathoni, Rif'an
Jurnal Chemurgy Vol 3, No 1 (2019): Jurnal Chemurgy-Juni 2019
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v3i1.2776

Abstract

Cangkang kelapa sawit merupakan salah satu limbah padat dari komoditi perkebunan kelapa sawit. Salah satu produk yang dapat dibuat dari limbah cangkang kelapa sawit adalah karbon aktif yang bernilai ekonomis dan ramah lingkungan. Tujuan dalam penelitian ini yaitu untuk mengetahui Penelitian ini dillakukan untuk mengetahui pengaruh variabel waktu aktivasi terhadap analisa kadar air, zat mudah menguap, dan kadar abu pada karbon aktif. Pada penelitian ini digunakan variabel waktu aktivasi 2 jam dan 4 jam serta menggunakan NaOH 1 N. Hasil dari penelitian ini didapatkan kadar air sebesar 2,92%, Kadar Abu 1% dan  Hasil penelitian ini berupa karbon aktif yang memiliki kadar 2,92%, kadar abu 1%dan zat mudah menguap 3% pada saat watu aktivasi 2 jam. Didapatkan hasil analisa kadar air sebesar 4,3%, kadar abu 3 % dan zat mudah menguap 9% pada saat waktu aktivasi 4 jam.