Gadjah Mada University

About: Gadjah Mada University is a education organization based out in Yogyakarta, Indonesia. It is known for research contribution in the topics: Population & Adsorption. The organization has 17307 authors who have published 21389 publications receiving 116561 citations. The organization is also known as: University of Gajah Mada & Universitas Gadjah Mada.

Rapid and simultaneous multi-element analysis of atmospheric particulate matter using inductively coupled plasma mass spectrometry with laser ablation sample introduction

Abstract: A precise and accurate method of analysis using inductively coupled plasma mass spectrometry combined with laser ablation for direct solid sample introduction was developed for the determination of Na, Al, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Ag, Cd, Sb, Ce, W and Pb in atmospheric particulate matter. Analyte element calibration was performed easily using a standard filter sample prepared by dropping an aqueous standard solution on to the surface of the same type of membrane filter as used for collecting atmospheric particulate matter. The absolute limits of detection ranged from 1.2×10–3 ng for Ce and W to 56.6 ng for Na. For replicate determinations of the analyte elements, the repeatabilities were within 10% (as RSD), except for Al (11%), Cu (18.5%) and Ag (16%). The method was successfully applied to the determination of trace elements in atmospheric particulate matter collected in Tokyo, Japan. The analytical results were in good agreement with those obtained by the commonly used method of instrumental neutron activation analysis.

Adaptasi Bahasa dan Budaya Inventori Big Five

Abstract: The use of Big Five Personality taxonomy in psychology research gradually is getting more and more popular. The Big Five Personality Inventory (BFI) is utilized to predict consumptive behavior, entrepreneurship interest, customer satisfaction and organizational commitment. Some use the term Big Five Inventory and some use Five Factor Model. The items also vary in number. It may consist of 44 items, 50 items, 100 items, or even 300 items. The research aiming to adapt the Big Five Inventory into Indonesian language was conducted in two stages. The first consisted of a process of translating Oliver John’s Big Five Personality Scale of 44-item version and discussing the translation result. This stage was done by two Indonesian people with background of psychology who had lived in United States of America for more than five years. The discussion was mediated by a psychologist who earned Ph.D. in the US. The agreed translation result was retranslated into English by a professional translator who had no background of psychology. The result of this re-translation was then compared to the original BFI to see the similarity in meaning. The re-translation result indicated no differences in meaning compared to the original BFI. Subsequently, the BFI of Indonesian version was read by three lay-people in order to find out whether the translated items can be understood consistent with their meanings of its original source. The second stage was to test the Indonesian-version BFI to 790 people with different backgrounds of age, education and places of origin. Result of the first stage was presented in the format of a description of translation process. The second stage, which was a confirmatory factor analysis (CFA) resulted in two measuring models, namely M2 and M3. The M2 model consisted of 37 items whose quality was good enough, showing the score of λ ranging between 0.32 and 0.78 and the reliability α between 0.70 and 0.79. The M3 models consisted of 28 items with good quality, showing the score of λ between 0.43 and 0.80 and its reliability α between 0.70 and 0.79. In conclusion, items with lower loading factor indicate that sentences of the BFI translation must be corrected in the next research.