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Search Results: 1 - 10 of 53 matches for " Yohanes Martono "
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Microencapsulation Stability of Stevia Leaf Extracts of Stevia rebaudiana Bert Using Inulin-Chitosan  [PDF]
Mutmainah Mutmainah, Yohanes Martono, Yuvianti Dwi Franyoto, Lia Kusmita
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105925
Abstract:
Extract of Stevia leaf of rebaudiana Bert has a content that is easily oxidized by the presence of light and heating so it is not stable during storage. A microencapsulation process is carried out which aims to protect the contents in the extract. This study aims to determine the effect of storage temperature on the physical stability of the microencapsulation of Stevia leaf of rebaudiana Bert with a combination of encapsulants inulin chitosan. A study was conducted to determine the effect of temperature on the mi-croencapsulation stability of Stevia leaf of rebaudiana Bert over a period of 1 month. Tests carried out on the microencapsulation of Stevia leaf of re-baudiana Bert include the examination of the physical parameters of the microcapsules, namely the microencapsulation yield, moisture content, sol-ubility, flow rate, non-encapsulated and encapsulated extracts content and determination of particle distribution and morphological form. The test results show that the storage temperature does not affect the microen-capsulation stability of Stevia leaf of rebaudiana Bert, because the SEM test results did not change i.e. the particle size distribution of 1 - 1000 μm. The average yield obtained from making microencapsulation of Stevia leaf extract of rebaudiana Bert was 98.20%. Storage temperatures of 5?C, 25?C and 40?C affect the physical stability of the microencapsulation of Stevia leaf extract of rebaudiana Bert due to changes in the profile of physical characteristics during storage.
Monthly Characteristic and Variability of Surface Wind Over the Indian Ocean
Martono
Makara Seri Sains , 2009,
Abstract: This research was conducted to understand monthly characteristic and variability of surface wind circulation over the Indian Ocean. The method used in this research was descriptive analysis. The data used was the monthly direction and velocity of surface wind obtained from the National Oceanic and Atmospheric Administration. The result showed that the monthly variability of surface wind circulation over the Indian Ocean is influenced by movement of the sun. The change in the variability of surfacewind circulation was more in the northern hemisphere, but vice versa surface wind circulation in the southern hemisphere was constant during the year. Generally, velocity of surface wind circulation was the greatest occurred in July and was the weakness occurred in April.
AN EXPERIMENT ON MOSQUITO CAPTURING TECHNIQUE USING A DEMOUNTABLE CAGE
Martono Martono
Bulletin of Health Research , 2012,
Abstract: Makalah ini melaporkan suatu eksperimen penangkapan nyamuk menggunakan demountable cage di sebuah danau di Banyuwangi Jawa Timur. Dari eksperimen itu terbukti bahwa perangkap yang kecil ternyata lebih praktis digunakan diban-ding yang besar. Lebih mudah dibongkar-pasang dan dibawa-bawa. Di samping itu tangan lebih mudai: menjangkau ke segala penjuru untuk menangkap nyamuk-nyamuk. Metode penangkapan ini dapat digunakan sebagai teknik sampling dalam mengukur tindakan pe-ngendalian larva, dalam mempelajari dinamika populasi, dan memeriksa ada tidaknya perkembang-biakan nyamuk.
DIRECT IMPACT OF AGRICULTURAL INSECTICIDE APPLICATION ON ANOPHELINE LARVAE POPULATION WITH SPECIAL REFERENCE TO AN. ACONITUS DONITZ IN RICE FIELD
Martono Martono
Bulletin of Health Research , 2012,
Abstract: Telah dilakukan tes kerentanan dan tes bioassay dengan Basudin 60 EC terhadap larva An. aconitus di desa Margopatut (300 meter di atas permukaan laut), sebelah timur kaki gunung Wilis, Kecamatan Sawahan, Kabupaten Nganjuk, pada bulan Juni 1983. Hasilnya menunjukkan bahwa larva An. aconitus sangat rentan terhadap insektisida tersebut. Tes bioassay juga membuktikan bahwa kematian 100% pada larva itu terjadi sesudah 24 jam sejak penyemprotan. Pengurangan jumlah larva pada sawah-sawah yang disemprot adalah 72%. Dari hasil penelitian ini jelas bahwa Basudin 60 EC dapat mengakibatkan pengaruh yang baik dalam penurunan jumlah larva An. aconitus di sawah-sawah.
ANALISIS PENGARUH PROFITABILITAS INDUSTRI, RASIO LEVERAGE KEUANGAN TERTIMBANG DAN INTENSITAS MODAL TERTIMBANG SERTA PANGSA PASAR TERHADAP "ROA" DAN "ROE" PERUSAHAAN MANUFAKTUR YANG GO- PUBLIC DI INDONESIA
Cyrillius Martono
Jurnal Akuntansi dan Keuangan , 2002,
Abstract: This study investigates four proxies of competitive ratios that being influence to the company profitability. These proxies are industry profitability, weighted leverage, weighted capital intensiveness, and market share. The sample employed in the present study consists of the 41 firms, which have been listed at Jakarta Stock Exchange since 1994. The annual financial report data employed spans the years 1994-1997. The t and F tests in multiple regression models are used to test hypotheses. Research findings show that: first, industry profitability, weighted leverage, and capital intensiveness are statistically significant to influence return on assets. Second, industry profitability, weighted leverage, and market share are statistically significant to influence return on equity. Third, regression model of ROE has R2 higher than regression model of ROA. This result indicates that ROE model is more robust than ROA model. Fourth, industry profitability is superior to predict return on assets, while weighted leverage is superior to predict return on equity. Abstract in Bahasa Indonesia : Studi ini meneliti empat proksi rasio-rasio persaingan yang mempengaruhi profitabilitas perusahaan. Proksi tersebut meliputi profitabilitas industri, rasio leverage keuangan tertimbang, rasio intensitas modal tertimbang dan pangsa pasar. Penelitian ini menggunakan data laporan keuangan perusahaan manufaktur yang go-public di Indonesia sejak 1994-1997 dengan total sampel per tahun sebanyak 41 perusahaan yang terdaftar di Bursa Efek Jakarta. Teknik analisis yang digunakan adalah analisis regresi berganda dengan menggunakan pooling data. Uji t dan uji F digunakan untuk menguji hipotesis penelitian. Hasil penelitian menunjukkan bahwa; pertama, tiga variabel, yaitu ROA industri, intensitas modal tertimbang, dan leverage keuangan tertimbang terbukti berpengaruh signifikan terhadap ROA perusahaan. Kedua, tiga variabel, yaitu ROE industri, leverage keuangan tertimbang, dan pangsa pasar terbukti berpengaruh signifikan terhadap ROE. Ketiga, berdasarkan nilai R2, hasil analisis regresi ROE lebih robust dibandingkan hasil analisis regresi ROA. Keempat, profitabilitas industri terbukti superior dalam menjelaskan ROA, sedangkan variabel yang superior dalam menjelaskan ROE adalah rasio leverage keuangan tertimbang. Kata kunci: Return on assets, return on equity, rasio industri.
STRATEGI PENINGKATAN KINERJA PROGRAM STUDI MELALUI OPTIMALISASI PERAN PIMPINAN
S. Martono
Jurnal Dinamika Manajemen , 2013,
Abstract: The objective of this study is to analyze the influence of leadership styles on an organizational culture, teamwork and organizational performance. Behavior and how a head department plays a role of a leader will determine people work quality. There are findings that in universities, not all leaders are able to comprehensively understand what program department scope’s is. The sample was determined by proportional random sampling totaled 139 people. The variables of study include leadership styles, teamwork, organizational culture, and organizational performance. Data were collected by questionnaires, analysis using Structural Equation Modeling (SEM). The results showed leadership style variable does not directly influence organizational performance of program department, but indirectly through the influence of organizational culture and teamwork. Teamwork variables impact directly or indirectly through organizational culture to organizational performance of program department. Suggestions from this research are there is a need to develop the leadership culture through example, attitude and behavior in utilizing existing resources in the faculties, program departments and unit program.
Pengaruh Budaya Etnis dan Perilaku Kewirausahaan Terhadap Kinerja Usaha Mikro Kecil Agribisnis di Provinsi Papua
Yohanes Rante
Jurnal Manajemen dan Kewirausahaan , 2010,
Abstract: The results of this study is also expected to examine the differences of ethnic and cultural influences entrepreneurial behavior on the performance of micro small agro-businesses and non-Papuans of Papua, which operates in various sectors of agribusiness, especially on increasing sales volume. The sample used in this study of 250 respondents, with the unit of analysis both business people and non-Papuan ethnic Papuans in the agribusiness sector. While the method is a method of analysis used Structural Equation Modelling (SEM), where this method see the relationship between variables, the indicators that make up the model. The results of this study can be concluded that: first, that ethnic culture has positive and significant impact on the performance of MSEs; second, ebtrepreneurial behavior has a positive abd significant influence on the performance of MSEs agribusiness; third, in general, all the variables and indicators have an influence on the performance of agribusiness SMEs showed significant and valid results, the performance of MSEs agribusiness Y (increased sales volume of business).
THE EFFECTS OF DIETARY FOOD FORTIFIED WITH VITAMIN B4 ON LIPID PROFILES IN SERUM AND LIVER TISSUE
Yohanes Buang
Makara Seri Kesehatan , 2010,
Abstract: The effects of dietary food fortified with vitamin B4 on lipid profiles in serum and liver tissue were studied. Rats were paired-fed a 0.25% vitamin B4 diet or a diet without vitamin B4 for 10 days. Serum lipid levels were measured using enzyme assay kits. Lipids of liver tissues were extracted and the lipid contents were determined. A piece of liver was prepared to determine the activities of fatty acid synthase (FAS) and fatty acid β-oxidation. The results showed that animals fed a food fortified with vitamin B4 had higher level of serum TG, PL, total cholesterol, and high density lipoprotein. Their increases were approximately by 74%, 20%, 27%, and 27%, respectively. The significant changes in liver lipid were only found in PL component. This treatment promoted FAS activity, but impaired the fatty acid β-oxidation. In conclusion: Dietary food fortified with vitamin B4 induces hypertriglyceridemia and liver PL level.
DIETARY FOOD FORTIFIED WITH OROTIC ACID AND LIVER FUNCTION
Yohanes Buang
Makara Seri Sains , 2011,
Abstract: The effects of dietary food fortified with orotic acid (1.0%) on liver function were studied in rats. The rats fed withorotic acid promoted liver triglyceride content markedly, that was 5-fold higher than that of the control. The livermalondialdehyde (MDA) content increased by 10%, but the gluthation peroxidase (GSH-Px) activity decreased by 50%.The serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities increased by 25% and 30%,respectively. Therefore, the decreased GSH-Px activity was associated with the promotions of AST, ALT, and the liverMDA levels. In conclusion: dietary orotic acid promotes lipid peroxidation but reduces the rate of the antioxidantenzyme. Therefore, dietary food fortified with orotic acid attenuates the liver function.
Augmented Reality sebagai Metafora Baru dalam Teknologi Interaksi Manusia dan Komputer
Kurniawan Teguh Martono
Jurnal Sistem Komputer , 2011,
Abstract: This paper contains about how the augmented reality technology used in new metaphors in computer interaction technology. Metaphor is one form of change. With changes in the field of interaction it will improve the user experience when operating the application. Augmented reality is the additional reality that is used to blend or combine objects in the virtual world with real-world environment. By using this technology are expected participation of users in interacting with existing applications, various fields such as military, health, education and other fields of applied science which has been implemented as part of augmented reality technology in its environment. Using augmented reality technology is expected to application users will feel the direct interaction process.
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