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2013-05-08 08:51:40
Untag Telah Luluskan 35.000 Sarjana
2013-05-08 08:51:25
FKIP Untirta Gelar Gebyar Hardiknas 2013
2013-05-08 08:50:53
Hasil penelitian wajib disertai sosialisasi

Publikasi Penelitian Dosen

Logit Model to Predict Diabetes Mellitus in Employee
Abstrak

Diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia with disturbances of carbohydrate, fat and protein metabolism resulting from defects in insulin secretion, insulin action, or both. According to the data achieved from WHO, more than 220 million people in the world suffered from diabetes mellitus, where 17 million people are Indonesian (8.6% of Indonesia’s population) and we can say that after India, China, and USA, Indonesia is in the fourth order in the world. Diabetes mellitus patients commonly felt fatigue, itchy in the skin, paresthesia, blurry vision or other. If this disease develops, it will have an effect on complication such as the increasing risk of blindness, stroke, and death. And this condition could reduce the working productivity in companies employees. Thus, it is important to know the significant indicator to predict the probability of the existence of this disease using logistic regression or logit model. From the data analysis, we acheived logit model:

ln  = -3.925+0.718Xsex(1) – 2.991Xage(1) – 1.184Xage(2) – 0.719Xage(3) + 0.004Xtrigl + 0.057XBMI

This model significantly explained that diabetes disease in employees depends on sex, age, triglyceride, and BMI (Body Mass Index) or IMT.

Keywords: regression, logit, dabetes

Penulis : MOORDIANI , S.F., M.Sc., Apt. [PDF File] didownload : 2 x

PHYTOCHEMICAL SCREENING AND DETERMINATION OF ANTIOXIDANT ACTIVITY OF FRACTIONS FROM ETHANOL EXTRACT OF Phyllanthus acidus (L.) Skeels LEAF
Abstrak

Antioxidant inevitably play significant roles to inhibit the oxidation process due to free radical agents. These agents can stimulate a wide range of degenerative diseases, such as cancer, cardiovascular diseases and neurodegenerative diseases. Antioxidants can be derived from natural sources like plants. One of the plants used empirically as medicinal plant is ceremai (Phyllanthus acidus (L.) Skeel). Some investigations reported that the ceremai leaves contained phenolic compounds which were likely to possess antioxidant activity. This research was aimed to undertake phytochemical screening and determine antioxidant activity of ethanol extracts and its fractions from ceremai leaves.

The ethanol extract was prepared bu using continuous maceration method using hexane, ethyl acetate, and ethanol consecutively. Some proportion of the extract was used to screen its content phytochemically using Methodology for Analysis for Vegetable Drugs. Other proportion was fractionated using column chromatography. The antioxidant activities of the extract and its fractions resulted were evaluated using DPPH method.

The phytochemical screening revealed that the ethanol extract contained tannin, reducing substances, steroid glycosides and flavonol. The fractionation process produced five fractions where fraction no.3 had the highest antioxidant activity of all (IC50 = 35.62 µg/ml). The fractions from ethanol extract had good prospect as potent natural antioxidant agent.

Keywords: Phyllanthus acidus (L.) Skeel, ethanol extract, antioxidant, DPPH method

Penulis : MOORDIANI , S.F., M.Sc., Apt. [PDF File] didownload : 2 x

PERANCANGAN PENGENDALI PID PADA PRESSURE PROCESS RIG (38-714) BERBASIS MIKROKONTROLLER AVR ATMega8535
Abstrak

Pressure Process Rig (PPR) merupakan instrument yang digunakan untuk proses pengaturan presusure (tekanan) dan kecepatan aliran (flow) udara, pada proses pengendalian PPR Keberadaan pengendali pada tekanan dan kecepatan aliran udara memiliki nilai variable kendali dalam sebuah sistem proses yang memberikan kontribusi besar terhadap perilaku sistem. Tujuan dari penelitian ini akan dibahas perancangan pengendali PID digital berbasis mikrokontroller pada plant Pressure Process Rig 38-714, untuk mendapatkan respon sistem yang lebih baik dengan mengendalikan posisi bukaan aktuator yang berupa pressure control valve. Tuning parameter pengendali PID diperoleh dengan menggunakan grafik tuning PID controller yang dikembangkan oleh Ciancone dan Thomas E. Marlin.

 

Kata Kunci : Pressure Process Rig(38-714), PID,Mikrokontroller AVR ATMega8535.

 

Penulis : VECTOR ANGGIT PRATOMO , S.T, M.T [PDF File] didownload : 2 x

Determination of Fragments Size of pAcRP23 Plasmid Digested with Sal1
Abstrak
Penulis : MOORDIANI , S.F., M.Sc., Apt. [PDF File] didownload : 2 x

BAKTERI TANAH PENGHASIL SIKLODEKSTRIN GLIKOSILTRANSFERASE (CGTASE) DARI BEBERAPA LAHAN PERTANIAN DI BOGOR DAN SUMEDANG, JAWA BARAT, INDONESIA
Abstrak

Siklodekstrin glikosiltransferase (CGTase, EC No. 2.1.4.19) adalah enzim microbial yang mengkonversi pati menjadi siklodekstrin (CD). Karena sifatnya yang unik, CD banyak digunakan dalam beberapa industri, seperti farmasi, kimia, makanan dan kosmetik. CD juga dimanfaatkan dalam perlindungan lingkungan. Nilai komersial CD yang tinggi telah memotivasi banyak peneliti di seluruh dunia untuk menemukan mikroorganisme penghasil CGTase. Namun demikian, masih sedikit penelitian di Indonesia terkait hal ini. Penelitian ini bertujuan untuk menyeleksi mikroorganisme penghasil CGTase dari sampel tanah yang diambil dari beberapa lahan pertanian di daerah Bogor dan Sumedang, Jawa Barat, Indonesia. Media agar Horikoshi digunakan sebagai media seleksi. Dari proses ini diperoleh 6 isolat bakteri penghasil CGTase. Isolat-isolat tersebut dinamai TB-A, TB-B, TB-C, TB-D, JS-1 dan JS-3. Isolat-isolat dikarakterisasi dengan beberapa teknik pewarnaan dan biokimia. HAsil menunjukkan bahwa seluruh isolat adalah bakteri Gram positif dan diperkirakan termasuk dalam Grup 19 atau 20 berdasarkan skema determinasi Bergey’s. Analisis indeks aktivitas enzim dan pengukuran unit aktivitas enzim menunjukkan dua isolat dengan aktivitas CGTase tertinggi, yaitu JS-1 dan JS-3, dengan nilai indeks aktivitas CGTase masing-masing sebesar 1,67 dan 2,00, serta unit aktivitas enzim masing-masing sebesar 0,022 dan 0,016 U/mL.

 

Kata kunci: siklodekstrin glikosiltransferase (CGTase), siklodekstrin (CD), bakteri tanah, aktivitas enzim

Penulis : MOORDIANI , S.F., M.Sc., Apt. [PDF File] didownload : 2 x

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