Garuda - Garba Rujukan Digital

All

ASEAN Journal on Science and Technology for Development

ajstd
Website

Published by Universitas Gadjah Mada

ISSN : 22249028 EISSN : 22249028 DOI : -

Core Subject : Science, Education, Engineering,

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Mathematics

The coverage is focused on, but not limited to, the main areas of activity of ASEAN COST, namely: Biotechnology, Non-Conventional Energy Research, Materials Science and Technology, Marine Sciences, Meteorology and Geophysics, Food Science and Technology, Microelectronics and Information Technology, Space Applications, and Science and Technology Policy, Infrastructure and Resources Development.

Arjuna Subject : -

Articles 477 Documents

18 19 20 21 22

Prothrombin-Sepharose-Purified Factor V and Its Role in Prothrombin Conversion T.C ONG
ASEAN Journal on Science and Technology for Development Vol. 3 No. 1 (1986): Vol. 3 No. 1 (1986)
Publisher : Universitas Gadjah Mada

Bovine Factor V isolated by the method of Esnouf and Jobin (1967) has been further purified by affiniy chromotgraphy through prothrombin-sepharose. Factor V bound quantitative to the prothrombin-sepharose column. There was a 2-fold increase in the average specific activity (260.000 units/mg protein) of the Factor V recovered. Recovery of total Factor V activity and total protein was about 95% and 90% respectively.

Development in The Analytical Gas Chromatography of Metal Dialkydithiophospate Complexes DR PHILIP J MARRIOT
ASEAN Journal on Science and Technology for Development Vol. 3 No. 1 (1986): Vol. 3 No. 1 (1986)
Publisher : Universitas Gadjah Mada

The gas chromotographic analysis of metal-containing compounds has been a small but reasonably active field for about 25 yeras. Analyses cover such as organometalics, metal complexes, and compounds such as hydrides and halides. Reviews of the fiels may be seen in the books by Moshier and Sievers (1), Guichon and Pommier (2) and Crompton (3), as well as the papers by Uden and Henderson (4) abd Rodrigues-Vasquez (5).

The Cardenolides of Thevetia Peruviana Grown in Malaysia IKRAM M SAID; ZARINA A RAHMAN
ASEAN Journal on Science and Technology for Development Vol. 3 No. 1 (1986): Vol. 3 No. 1 (1986)
Publisher : Universitas Gadjah Mada

The cardiac glycosides found in the seed kernels of Thevetia peruviana grown in Malaysia was investigated. Thevetin, a triglycoside, was separated into thevetin A and thevetin B by DCCC while the monoglycoasides obtained after incubation of the seeds were identified as nerlifolin, neriifolin monoacetate, and peruvoside.

Fungsi Associated with Ipil-Ipil (Leucaena Leucocephala) (Lam) De with Seeds and Their Control SEBASTIAN S QUINIONES
ASEAN Journal on Science and Technology for Development Vol. 3 No. 1 (1986): Vol. 3 No. 1 (1986)
Publisher : Universitas Gadjah Mada

Thirteen fungi were isolated from Leucaena seeds from different places in the philipines. These were; Fusarium moniliforme, F. solani, F. semitecctum, Botryodiplodia theobromae, Cephalosporium sp., Phoma sp., Phoma sp., Cladosporiumsp., Chaetomium sp., Chaetomiun sp., Penicilium sp. and Aspergilus flavus. C. graminiculo completely inhibits the germination of seeds once it has colonized the seeds.

PRESERVATION OF MILKS WITH ADDITION OF ANTIBACTERIAL AND AROMATIC SUPPLEMENTS PRODUCED IN JAPAN Tatik Khusniati
ASEAN Journal on Science and Technology for Development Vol. 25 No. 1 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)
Publisher : Universitas Gadjah Mada

The good antibacterial and aromatic supplements produced in Japan for preservation of milks at storage was investigated. Nineteen sweet and herb materials were made juices as supplements to preserve the milks. Bacterial counts, pH, protease activities and lipase activities of supplemented milks, and antibacterial activities of supplements were detected by total plate counts, glass electrode pH meter, azocasein, modified Dole extraction and turbidity methods. Eleven of nineteen milks added 10% of honey, garlic, ginger, horseradish, “sansho”, “yuzu”, green perilla, “nira”, green tea, bamboo leaf and “yomogi” were selected as good supplemented milks based on pH of these milks closed to pH of milks, the lower bacterial counts, protease activities and lipase activities of these milks than that without supplements, at 5 days before up to 10 days after use by date (P<0.05), consumed materials and antibacterial activities of these supplements in inhibiting Pseudomonas fluorescens P. 33 in the nutrient media.

AROMATIC PLANTS FROM VIETNAM, SOURCES OF PHENYLPROPANOID PRODUCTS FOR INDUSTRY Tran Minh Hoi
ASEAN Journal on Science and Technology for Development Vol. 25 No. 1 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)
Publisher : Universitas Gadjah Mada

Aromatic plants produce by vapour distillation or other processes essential oils which are products with high commercial value used in the natural product industries such flavour and fragrance, perfumes and cosmetics industries as well as pharmaceutical industry. The aim of this study was to characterise some aromatic plants from Vietnam through the chemical composition of their essential oils. We got interested in essential oils which contained a main component with high to ultra high content, susceptible to find an industrial use. For this study, a dozen of plants have been selected. The composition of their essential oils will be compared with those of the same plants, reported in the literature, from Vietnamese origin or from other countries.

SYNTHESIS OF FERRITE NANOPARTICLES WITH PROTEIN MOLECULES IMMOBILLIZED ON THEIR SURFACES Tran Hoang Hai; Le Hong Phuc; Doan Thi Kim Dung; Nguyen Thi Le Huyen; Bui Duc Long; Nguyen Tien Thang; Vu Van Do; Nguyen Thi Nhu Quynh; Masanori Abe
ASEAN Journal on Science and Technology for Development Vol. 25 No. 1 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)
Publisher : Universitas Gadjah Mada

The ferrite (a Fe3O4 – gFe2O3 mixed solution) fine particles, ~8 nm in size were synthesized from an aqueous solution. Trypsin, a proteolytic enzyme or a protein, was immobilized onto the surfaces of those particles during the synthesis process. The process was performed in the open air at a temperature as low as 4°C and on near-neutral condition of pH = 9, which is compatible with most of the bioactive molecules as well as trypsin. Therefore this technique is advantageous for preparing magnetite particles having biomolecules immobilized on their surfaces, which will be used for biomedical applications utilizing magnetic separation technique.

CAUSES OF TRACTOR BREAKDOWNS AND REQUISITE SOLUTIONS A CASE STUDY OF SMALL TRACTOR USE IN RIAU PROVINCE, INDONESIA Ujang Paman; S. Uchida; S. Inaba; T. Kojima
ASEAN Journal on Science and Technology for Development Vol. 25 No. 1 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)
Publisher : Universitas Gadjah Mada

A survey has been undertaken to look into the causes of tractor breakdowns on field operations and the main constraints associated with repair and maintenance, and to recommend a solution to the problems in Riau Province. The owners of sixty-two small tractors were interviewed, from three regencies chosen of the Province in 2003. As a result, the working capacity of the tractors was relatively high and the average annual use was relatively low compared to the national average. Most tractor operators did not have sufficient skill to operate tractors. The tractor breakdowns resulted from operators’ mistakes, fuel and oil defilement, rough field conditions, poor maintenance, intense use, and factory design. Inadequate repair shops, a lack of spare parts, and a shortage of mechanics in the local vicinity were the main factors curbing tractor repair. It was also found that inadequate finances led many farmers to ignore tractor maintenance. These suggest that tractor operators should be well trained and tractor-supporting facilities should be provided in rural areas. A mechanical extension officer and credit options should be made available for farmers.

A NEW INVESTIGATION OF VIETNAM’S BERYL Nguyen Van Binh; Nguyen Thi Hong
ASEAN Journal on Science and Technology for Development Vol. 25 No. 1 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)
Publisher : Universitas Gadjah Mada

The paper presents briefly new investigation of Vietnam beryl group, especially some characteristics of regional geology of Song Chay granite massif and new find of big crystals of beryl in them. The green beryl is found in quartz - mica - tourmaline, mica - feldspar – quartz pegmatite bodies in the south part of Song Chay granite - gneiss massif near Na Chi and Tan Nam villages, Quang Binh district, Ha Giang province.

ARTIFICIAL INTELLIGENT SYSTEM FOR MEASUREMENT OF HARMONIC POWERS Jovitha Jerome; P. Vinoth
ASEAN Journal on Science and Technology for Development Vol. 25 No. 1 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)
Publisher : Universitas Gadjah Mada

The importance of the electric power quality (PQ) demands new methodologies and measurement tools in the power industry for the analysis and measurement of the basic electric magnitudes necessary. This paper presents a new measurement procedure based on neural networks for the estimation of harmonic amplitudes of current/voltage and respective harmonic powers. The measurement scheme is built with two neural network modules. The first module is an adaptive linear neuron (ADALINE) that is the kernel part of estimation of complex harmonic coefficients of the current/voltage. The second module is feedforward neural network that obtains the harmonic active/reactive powers. In order to perform digital simulation the Feedforward and Adaline neural network tools were developed in LabVIEW. This measurement algorithm was tested for the practical cases and found to be robust, computationally fast and efficient.

Page 20 of 48 | Total Record : 477

18 19 20 21 22

Filter by Year

1984 2022

Filter By Issues

All Issue Vol. 39 No. 3 (2022): Land, Energy, and Water Resources Vol. 39 No. 2 (2022): Green Economy Vol. 39 No. 1 (2022): Community Resilience Vol. 38 No. 3 (2021): Embrace Potential Vol. 38 No. 2 (2021): Repurpose & Redefine Vol. 38 No. 1 (2021): A New Perspective on Development Vol. 37 No. 3 (2020): Movement Vol. 37 No. 2 (2020): The Perennial Quest Vol. 37 No. 1 (2020): Earth, Water & Fire Vol. 36 No. 1 (2019): Vol 36 No 1 (2019) Vol. 36 No. 3 (2019): Ahead of the Storm Vol. 36 No. 2 (2019): Across the Archipelago Vol. 35 No. 1-2 (2018): Extent of transfer of alien invasive organisms in South/Southeast Asia regio Vol. 35 No. 3 (2018): Developments in Nuclear Techniques in the Treatment of Cancer Vol. 34 No. 2 (2017): Vol 34 No 2 (2017) Vol. 34 No. 1 (2017): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 33 No. 2 (2016): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 33 No. 1 (2016): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 32 No. 2 (2015): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 32 No. 1 (2015): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 31 No. 2 (2014): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 31 No. 1 (2014): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 30 No. 1-2 (2013): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 29 No. 2 (2012): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 29 No. 1 (2012): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 28 No. 2 (2011): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 27 No. 1 (2010): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 26 No. 1 (2009): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 25 No. 2 (2008): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 25 No. 1 (2008): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 24 No. 1-2 (2007): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 24 No. 4 (2007): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 23 No. 1-2 (2006): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 23 No. 4 (2006): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 23 No. 3 (2006): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 22 No. 4 (2005): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 22 No. 3 (2005): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 21 No. 1 (2004): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 20 No. 3-4 (2003): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 20 No. 1 (2003): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 19 No. 2 (2002): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 19 No. 1 (2002): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 18 No. 2 (2001): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 18 No. 1 (2001): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 17 No. 2 (2000): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 17 No. 1 (2000): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 10 No. 2 (1993): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 8 No. 2 (1991): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 7 No. 1 (1990): ASEAN Journal on Science and Technology for Development Vol. 5 No. 2 (1988): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 5 No. 1 (1988): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 4 No. 2 (1987): Vol. 4 No. 2 (1987) Vol. 4 No. 1 (1987): ASEAN Journal on Science and Technology for Development (AJSTD) Vol. 3 No. 1 (1986): Vol. 3 No. 1 (1986) Vol. 2 No. 1 (1985): Vol. 2 No. 1 (1985) Vol. 1 No. 1 (1984): Vol. 1 No. 1 (1984) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kab. sleman, Daerah istimewa yogyakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA