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Widyariset

widyariset
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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 14117932 EISSN : 24610976 DOI : -

Core Subject : Engineering,

Engineering

Widyariset is a scientific journal which publishes the results of research and development, assessment and systematic thinking about science and technology. The writers of the scientific papers in this journal come from researchers/researcher candidates from various institutions' research and development (R&D), and universities. Widyariset is published regularly three times a year: in April for the issue of Social Sciences and Humanities (IPSK), in August for the issue of Natural Sciences (IPA) and in December for the issue of Engineering Sciences (IPT).

Arjuna Subject : -

Articles 485 Documents

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EFFECT OF MIXING THE CALF FECES WITH COASTAL SANDYSOIL ON THE GROWTH OF CORN PLANT (Zea mays) Agung Prabowo; Soemitro Padmowijoto; Zaenal Bachruddin; Abdul Syukur
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

This research was intended to determine the effect of combination calf feces and coastal sandy-land on the growth of corn plant. This experiment was arranged in a 2x3x2 factorial pattern of completely randomized design. First factor was calf feces of with and without microbe treatment, second factor was three levels of feces incubation which were 0 day (I-0), 20 days (I-20), and 40 days (I-40), and third factor was fecal dosages of 15 ton/ha (D15) and 30 ton/ha (D30). Parameters of plant height, dry, and wet weight of roots and vegetative, chemical and physical properties of mixture of calf feces and coastal sandy-land were observed. The plant height was observed weekly. There was a signiﬁ cant difference (P<0.05) on combination of feces without and with microbe treatment,fecal incubation time and dosage on the plant height. There was a tendency of increasing fecal dosage and fecal incubation time on the increase of plant height. This study suggests that calf feces could improve the corn plant growth in coastal sandy-land.

Analysis of Businesses Satisfaction and Loyalty To The Service Quality of Agriculture Tool and Machinery Testing Dedy Wahyudi; Lilik Noor Yuliati
Widyariset Vol 18, No 2 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

System standardization in testing and monitoring agricultural machinery an attempt to anticipate the increasing use of agricultural machinerywho do not meet the technical and economical feasibility standards. At this time there are many agricultural machinery from foreign and domestic untested and not in accordance with the Indonesian National Standard (SNI). Agricultural Machinery Quality Testing Center (BPMA) is one organization that conducts testing agriculture machinery But since the beginning of the current set up has never conducted a survey on customer satisfaction. Yet over time, occurs complaints submitted by businesses agricultural machinery directed to the BPMA. This research examines the relationship between service quality, satisfaction and loyalty businesses that apply for testing equipment and agricultural machinery in the Ministry of Agriculture. Respondents were used in this study are the businesses that produce agricultural machinery as 88 respondents, that all respondents should be the following testing procedures from the beginning until the publication of the report of test results. Based on the results if the data using SEM-based variantis found that the quality of service (tangible, responsiveness, assurance, and empathy) a significant effect on customer satisfaction, and satisfaction significantly influence loyalty.

THE IMPACT OF TIMBER HARVESTING AND TPTJ (SELECTED LOGGING AND ROW PLANTING) SILVICULTURE SYSTEM ON SOIL CARBON CONTENT POTENCY IN TROPICAL FORESTS (CASE STUDY IN IUPHHK AREAS OF PT SARI BUMI KUSUMA CENTRAL KALIMANTAN) Almulqu A.A, Elias; Prijanto Pamoengkas
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Timber harvesting and TPTJ silvicultural treatment had signifi cant impact on carbon stocks in tropical natural forests. The objectives of this research were studying the impact of timber harvesting and TPTJ silvicul-tural system on carbon stock potency in the soil of tropical natural forests, and examining the characteristics of soil physical, chemical and biological properties in tropical natural forest and TPTJ logged over areas. This research was conducted in the IUPHHK of PT Sari Bumi Kusuma, Unit of Seruyan, Central Kalimantan province. Carbon stocks potency in the soil were measured in litter biomass, root biomass, and soil organic carbon, by using Brown equation (1997), where it was assumed that 50% of the biomass was carbon. Research results showed that wood harvesting and TPTJ treatment possessed signifi cant respond. Carbon stocks in TPTJ areas ranged between 93.3583–135.9631 tons of Carbon/ha, whereas carbon stock in primery forest was 122.7342 tons of Carbon/ha

STUDY OF ENHANCING STUDENT’S LEARNING ACHIEVEMENT BY THE USE OF PQ4R (PREVIEW, QUESTION, READ, REFLECT, RECITE,REVIEW) ELABORATION STRATEGIES METHOD IN THE ISLAMIC RELIGIOUS STUDY Feisal Ghozaly
Widyariset Vol 14, No 1 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

In general, teachers used to teach the Islamic Religious Education (PAI) in the conventional method of learning. This research aims to determine whether the use of PQ4R elaboration strategies methods in learning can enhance students’ learning achievement systematically in SMP Negeri 15 Mataram. This research used a descriptive approach seeking to examine moredeeply the use of PQ4R elaboration strategies methods. The results showed that the average score of the subjects increased ranging from 74.91 on the precondition capability to 82.08 on the first act, and increased to 85.25 in the second act, and rose again to 87.20 in the third act. Thus, PAI learning using PQ4R elaboration strategies methods are proven to improve student achievement.

PREPARATION OF NI-MO CATALYSTS USING THE PILLARED CLAY AS A SUPPORT FOR HYDRODESULFURIZATION OF COKER NAPHTHA Nino Rinaldi
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

On the preparation of the Ni-Mo catalysts, a high of surface area of the support was needed in order to achieve the well dispersion of Mo on the support. One of the promising ways is the use of pillared clays as the support. Therefore, the preparation of pillared clay for a support of Ni-Mo catalyst and its effect on the hydrodesulfurization (HDS) reaction for sulfur removal of Coker naphtha were studied. The effects of pH of the Mo impregnation solutions were also studied. The results show that the pillarization process on clay using Al-pillared is signiﬁ cantly increased the surface area. Moreover, with the pH of the impregnation solution of 10, Mo is higher dispersed on the pillared clay support compared to pH-1, and thus the HDS activity of NiMo pillared clay catalyst of pH-10 is also more active. However, the HDS activity of the present catalysts is still not good enough compared to the commercial NiMo catalyst.

PHYSICOCHEMICAL AND ORGANOLEPTIC CHARACTERISTICS OF RED GUAVA (Psidium guajava L.) JUICE INSTANT DRINK POW- DER PRODUCED USING FOAM-MAT DRYING METHOD Sandi Darniadi; Iyan Sofyan; Dede Z. Arief
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Powder product as instant drink from red guava (Psidium guajava L.) juice is more practicable to increase economic value. The objective of the research was to investigate physicochemical and organoleptic characteristics of red guava juice instant drink powder produced using foam-mat drying method. The results showed that red guava juice instant drink powder produced using foam-mat drying method had high yield with solubility was low, the brightness was high, the level of redness was high, the level of yellowish was low, sugar was high, and sensory properties were accepted by panelist.

TRANSLATION APPROACH OF ENGLISH METAPHORS INTO INDONESIAN (A CROSS CULTURAL UNDERSTANDING STUDY) Ade Mulyanah
Widyariset Vol 14, No 1 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

This descriptive qualitative research aims at classifying important aspects related to sociolinguistics in rendering English metaphors into Indonesian. The study touches on several aspects dealing cross cultural understanding in translating metaphors taken from novel, TV serial, text bookin 2008. The cultural aspect in metaphors is related to important aspect of metaphors, namely, point of similarity, image, and figurative language. There are four types of metaphors in the paper: closed similes, open similes, live metaphors, and dead metaphors. The research reveals that: (1) Translation of closed similes can be rendered by applying literal translation meaning the focus of translation is on linguistics point of view. Translating direct metaphors (similes) is easier to transferthan indirect comparison (‘live’ and ‘dead’ metaphors). Transferring open similes needs the knowledge of the source and target language culture due to the absence of the point of similarity in the sentence. While, translating “dead” metaphors can be more understandable than ‘live’ metaphors by considering topic, image, and figurative language in both languages. (2) The paper is also trying to perform the difficulties in rendering English metaphors into Indonesian occur due to lack of standard Indonesian equivalent.

ACIDITY AND ALKALINITY LEVEL OF MAYAN BAMBOO ACTIVATED CHARCOAL (MBAC) ON SATURATED VAPOR OF ACID CHLORIDE AND NATRIUM HYDROXIDE Novitri Hastuti; Gustan Pari; Dadang Setiawan; Mahpudin Mahpudin; Daud Mulia Godang
Widyariset Vol 1, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

The use of a strong acid and alkali gives some disadvantages such as large volume, needs washing process and expensive in cost. The use of activated charcoal as a solid catalyst has grown but its adsorption performance can be affected by the activation process. This study aimed to characterize Mayan bamboo activated charcoal/MBAC (Giganchlotoa robusta Kurz). Carbonization was carried out at temperature 500°C for 4-5 hours. The charcoal was activated by steam at temperature 800°C for 60 minutes and 90 minutes. Activated carbon from Mayan bamboo tested for its acidity and alkalinity by saturated vapor of HCl and NaOH in a desiccator for 5 days. Characterization of Mayan bamboo activated showed that the moisture content, ash content, volatile matter and fixed carbon met the Indonesian standards (SNI 06-3730-1995). For adsorption capacity of iodine only MBAC in activation time, 90 minutes met Indonesian standard. The crystallinity of MBAC in activation time 90 minutes is 47.58% higher than MBAC in activation time 60 minutes about 25.65%. Adsorption of saturated vapor of HCl and NaOH showed MBAC in activation time 60 minutes is more acidic whereas MBAC in activation time 90 minutes is more alkaline. MBAC is can be used as a solid catalyst for various applications.

INDONESIAN GINGER YIELD QUALITY AS THE BASIS FOR SALEABILITY OF GINGER OIL ON THE INTERNATIONAL MARKET Wahyu Susihono
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Ginger Rhizome is potential to be sold in form of ginger oil. The distillation process was needed to fi nd out the most profi table ginger to be sold in form of ginger oil. The research objectives are to fi nd out comparison of “rendemen” from rind and fl esh of gajah, emprit, and red ginger using water and steam distillation process with capacity: 5000 gram of raw materials. Characteristic test performed to fi nd out the feasibility of sales accordance with Essential Oil Association Standard. Result showed that the highest rendemen is red ginger rind: 1,102%, while the lowest is gajah ginger fl esh: 0,248%. Gajah ginger oil is not feasible to be sold in world market because of it soaping number that reached 25.52%.

THE EFFECTS OF POLITICAL INSTITUTION ON SOURCES OF ECONOMIC GROWTH: CASE OF DEVELOPING COUNTRIES Irwanda Wisnu Wardhana
Widyariset Vol 14, No 1 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

This research attempts to determine if political institutions has significant influences on sources of economic growth in developing countries. The research employs panel data of 65 developing countries by following the methodology of Pinto and Timmons. The results show that more democratic regime decreases investment rates; and increases foreign direct investment to GDP ratio. However, political institutions in developing countries bring insignificant effects to secondary enrollment rate, labor supply and trade to GDP ratio. This research enriches the empirical findings on interaction between political institutions and economic performance especially for the caseof developing countries.

Page 31 of 49 | Total Record : 485

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Pusbindiklat Peneliti-LIPI (The National Training and Education Center for Researchers Development – Indonesian Institutes of Sciences) Jl. Raya Bogor Km. 46, Cibinong Science Center Cibinong - Bogor 16911

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA