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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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SYNTHESIS OF PHENOLIC FORMALDEHYDE RESOLE RESIN AS WOOD ADHESIVE USING 13'0 OIL Siti Nurul Aisyiyah Jenie
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Resin jenis resol fenol/formaldehid memiliki aplikasi yang sangat luas dalam bidang teknik kimia, mulai dari insulasi termal hingga sebagai bahan adhesif dalam industri kayu. Resin ini memiliki keunggulan sifat fisis yaitu tingginya ketahanan terhadap kelembapan dan cuaca, yang selanjutnya berguna dalam penggunaan konstruksi luar dan lembap. Sekarang, telah dikembangkan teknologi-teknologi baru untuk memproduksi bahan adhesif kayu dari bio oil. Resole resin dibuat dengan mereaksikan antara fenol dengan formaldehid, di mance 50% dari fenol yang bereaksi disubstitusi oleh fraksi fenol/netral yang diekstraksi dari bio oil. Dalam penelitian ini, lima macam komposisi reaktan digunakan untuk membandingkan kualitas dan sifat fisis masingmasing resin. Setiap resin memperoleh perlakuan yang sama selama sintesis. Hasil dari penelitian ini kurang memuaskan, semua sampel gagal merekatkan kedua permukaan kayu. Akan tetapi, resin yang memiliki kualitas rendah ini dapat diatasi dengan beberapa modifikasi menggunakan bahan aditif.

THE POTENTIAL OF Paenibacillus spp. AS PLANT GROWTH PROMOTER IN TROPICAL PEAT ECOSYSTEM Andri Frediansyah; I Made Sudiana
Widyariset Vol 16, No 2 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Microbial activity in soil play key important role for maintaining ecosystem health. The objective of this research was to explore the potential of bacteria isolated from Kalampangan, Central Kalimantan tropical peat soil as biofertilizer agent. We found 4 isolates have ability to produce amylase and cellulose and have nirK gene as denitrify ability. Base on the 16S rDNA analyses and morphological observation, those bacteria were identified as Paenibacillus durum, Paenibacillus polymyxa, Paenibacillus macerans, and Paenibacillus azotofixans. P. polymyxa also can produce plant growth hormone (indole acetic acid), P. azotofixans contains ow gene indicating that the strain is able to solubilize calcium as well as alluminium phosphate. All strain excepted P. durum was also contains NifH gene indicating that this strain is able to fix N2. With these characteristics the fourth isolates of bacteria can be used as agents of biological fertilizers for peatland.

KARAKTERISTIK DAN PREFERENSI HABITAT KAKAKTUA SUMBA (Cacatua sulphurea citrinocristata) DI TAMAN NASIONAL LAIWANGI WANGGAMETI PROVINSI NUSA TENGGARA TIMUR Oki Hidayat; Kayat Kayat
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Sumba cockatoo (Cacatua sulphurea citrinocristata) is an endangered endemic bird, which requires a serious attention. Sumba cockatoo is protected by Government Regulation No.7/1999 and the Ministry of Forestry Regula- tion No. 350//Kpts-11/1997. The aim of this study was to determine the characteristics and habitat preferences of Sumba cockatoo at Laiwangi Wanggameti National Park (LWNP) of East Nusa Tenggara Province. Vegetation analysis by making plots of 2 km in length with a total of 20 plots per location was used to discover the habitat characteristics. Chi-square test was used to determine the preference of cockatoo habitat variable. The habitat preference was analyzed by Neu’s method. The result showed that the habitat of Sumba cockatoo at LWNP has a relatively good richness of species with relatively even numbers each (good evenness). The habitat variables at LWNP were at altitude with the range of 251–400 meters above the sea level and the grade of slopeness was rather steep i.e. 26–40 % whereas the rampnesss is at 3–8 %. The most preferred location of Sumba cockatoo was at Billa forest block.

WEIGHT GAIN AND HEALTH CONDITION OF PREGNANT MACACA FASCICULARIS AT PT BIO FARMA (PERSERO) Mieska Despitasari
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

produced vaccines. This research aims to study the increase in body weight and health condition of M. fascicularisin PT Bio Farma’s captivity. Nine M. fascicularis were grouped into three treatments of feeding trials with differentprotein levels. Data were analyzed by Analysis of Variance. Highest protein level showed the highest proteinintake (16,28±0,62%) with highest feeding efficiency (94,72±3,60%). It gave effect on the high total weight gain.M. fascicularis’ health condition was measured by total plasma protein and hemoglobin levels. The highest totalprotein plasma level has been performed by the objects who take the highest protein level. Results showed thatmonkeys’ hemoglobin levels were decreased -- except monkeys that take 12,91% protein level – this is the indicationof nutritional anemia during pregnancy.

PROYEKSI DATA MURID SMP MELALUI PENDEKATAN TEORI SISTEM MATEMATIKA DI PUSAT STATISTIK PENDIDIKAN, BALITBANG, DEPDIKNAS Ikrar Pramudya
Widyariset Vol 12, No 3 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

This study discusses the application of the mathematical system theory in projection of data, especially educational data. This study is done by doing discussion of relevant theory and the appropriate mathematical system models. The result of the study is the existence of mathematical system model fitting in with requirement of projection of data and projection technique for n variable done simultaneously. Excess from projection of data with this approach is a consistent result of calculation and measurable error ofp rojection.

POLA KOMUNIKASI PIMPINAN DAN PENELITI DALAM INSTITUSI PENELITIAN DAN PENGEMBANGAN (LITBANG) PEMERINTAH M. Bashori Imron
Widyariset Vol 13, No 1 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

Communication pattern is the circulation of information in a network of interdependent relationships with one another. Communication pattern is different in its implementation for the Management of Research and Development units derived from background research rather than researchers. Circulation of information from communications to the above, tend to be undertaken by a leader who belongs to the researchers. In contrast information from the communication down, tend to be undertaken by the leadership that does not come from a background of researchers. Emergence the different communication patterns among others, is also influenced by the encouragement of informal communications that are not structured and not fixed by the habits of the leadership itself. Communication processes are carried out continuously and continuous between leaders and researchers in reducing the differences will lead to convergence of communication that can form a patterned process of communication.

MICROENCAPSULATION OF PROBIOTIC Lactobacillus plantarum AND ANALYSIS OF ITS MANNOSE SPECIFIC ADHESIN GENE EXPRESSION Novik Nurhidayat
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Infectious disease remains as a prominent health problem and worsened by the emerging antibiotic resistance. Probiotic has been an alternatievly popular application. Lactobacillus plantarum mar8 isolated from tropical fruit showed a stable mannose specific adhesin (MSA) activity in term of competing for and inducing immunity to infecting pathogen. This research focused on coating the probiotic with dextrin in fruit juice using a spraydrying technique to produce microencapsulated probiotic. The microencapsulation using 5% dextrin in either passion fruit or orange juice produced more compact capsule and supported higher probiotic viability. The microencapsulated probiotic expressed MSA gene for at least 10 generation indicating conserved function of probiotic.

PENGARUH KARBON MONOKSIDA TERHADAP OZON PERMUKAAN Novita Ambarsari; Ninong Komala; Afif Budiyono
Widyariset Vol 13, No 3 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

Surface ozone is one of air pollutant that can be very dangerous for human health and many other aspects of the living things. The effect of carbon monoxide (CO) to surface ozone formation has been studied. We used Dasibi Monitor Ozone and Horiba Ambient Carbon Monoxide Monitor to measure surface ozone and carbon monoxide concentration at air pollution monitoring station belong to LAPAN Bandung along 2008. The result shows that carbon monoxide affecting 20%–80% formation of surface ozone with negative correlation. A normal photochemical reaction is the main factors. Daily variation of surface ozone shows lower concentration occur in the morning and night, and higher concentration occur in the evening. While, daily variation of CO shows maximum concentrationin the morning and night, and lower in the evening.

PENGARUH KETIDAKAMANAN KERJA, KEPUASAN KERJA TERHADAP INTENSI KELUAR KARYAWAN (Studi pada PT “X” di Semarang) Carina Phrita Lydiasari
Widyariset Vol 13, No 1 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

This research is about human resource, especially about turnover intention. This research was done on staf of Spinning PT “X” in Semarang city. The sample obtained 377 samples of staf. The sample selected by randomsampling use stratified random sampling.The analysing use multiple regresion and the hypothesis test use t-test for partial test and F test for Simultaneous test. Mediating analysing use path analysis. The result of the research show that the applicaton of job insecurity and job satisfaction have significant influence on turnover intentions that mediating by commitment organizational of spinning department both of partial and simultaneous.

ANALYSIS THE IMPACT OF PRODUCT QUALITY AND CUSTOMER SERVICE ON SATISFACTION AND LOYALTY OF PEST CONTROL OPERATORS IN PT BAYER INDONESIA Sugiarman Sugiarman; Rita Nurmalina; Kirbrandoko Kirbrandoko
Widyariset Vol 18, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

The aims of the research are to identify the important level of attributes of product quality and customer service on customer satisfaction and loyalty, to analyze the impact of product quality and customer service oncustomer satisfaction and loyalty, and to recommend the corporate strategy to PT Bayer Indonesia on customer satisfaction and loyalty. Types of research are descriptive and explanatory survey and the sampling method is convenientsampling. Unit of observation is two hundreds respon dents through the distribution of questionnaires to the pest control operators in Jakarta, Bandung, Semarang, Surabaya, Denpasar, Balikpapan, Medan, and Pekanbaru.Attributes and its influence was analyzed using Structural Equation Model (SEM). Respondents of the study are from Jakarta (46.0%), Bandung (2.5%), Semarang (3.0%), Surabaya (25.0%), Denpasar (5.5%), Balikpapan (2.5%), Pekanbaru (4.0%), Medan (8.5%), and Batam (3.0%). The score of importance level of product quality is for effectivity (91.6%), ease of use (96.1%), flexibility (96.8%), technical specification (95.3%), durability (94.3%), and prestige (97.1%), while for customer service is tangibles (88.6%), reliability (87.0%), responsiveness (89.0%), assurance (94.6%), and empathy (96.8%). The results of explanatory research are product quality (R2 = 0.788; p = 0.003) and customer service (R2 = 0.820; p = 0.001) influence significantly on customer satisfaction, whereas customer satisfaction influence significantly on customer loyalty (R2 = 0.946; p = 0.000). Pest control operators as the applicator of pesticides for urban pest from PT Bayer Indonesia have satisfaction on product quality (95.2%) and customer service (90.5%).

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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