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Published by Pusbindiklat Peneliti LIPI

ISSN : - EISSN : 24610976 DOI : 10.14203

Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics

Widyariset is a scientific journal which publishes the results of research and development, assessment, and systematic thinking about Natural Science.

Arjuna Subject : Umum - Umum

Articles 476 Documents

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DISTRIBUTION OF Salmonella SEROTYPE FROM SLAUGHTERHOUSE (RPH) AND CHICKEN ABATTOIR (TPA) IN BOGOR Widodo Suwito
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Salmonella serotypes are found at the slaughterhouse (RPH) and chicken abattoir (TPA). The aim of these re-search was to determination the distribution of Salmonella serotypes from the RPH and TPA. Total of 267 samples were to collected from RPH and TPA in Bogor. These samples consisted of 98 carcass, 16 ﬂ oors swab, 8 knife swab, 1 table swab, 13 tub water, 4 waste water, 37 mesenteric glands, 50 caecum, 38 faeces, and 2 chicken nuggets were analyzed for Sallmonella contents using biochemical reaction and serology. The research showed that RPH and TPA in Bogor were contaminated by Salmonella enteritidis, Salmonella schwarzengrund, Salmonella weltevreden,and Salmonella typhimurium. The distribution Salmonella serotype from RPH and TPA in Bogor occurred in the caecum, mesentery glands and carcass.

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.

THE EFFECT OF INDUCTOR RESISTANCE ON DEFIBRILLATION ENERGY FROM ELECTROCARDIOGRAPH ENDURANCE TEST SYSTEM Irawan Sukma; Siddiq Wahyu Hidayat; Wuwus Ardiatna
Widyariset Vol 3, No 1 (2017): Widyariset
Publisher : Pusbindiklat - LIPI

Electrocardiograph endurance test system has two work processes like defibrillator. Charging process produces energy stored in capacitor (ES) and discharges process produce defibrillation energy. Defibrillation energy without connect to electrocardiograph (E2) at test system is influenced by the resistance values of inductor (RL). In previous research, test system only produces E2 = 19,83 joule, this is caused by the inductor used with value RL = 72 Ω. The purpose of this research is to select inductor resistance value to get good and efficient value E2. Range value RLused in test system was 1–10 Ω, based on standar International Electrotechnical Commission (IEC) 60601-2-27 clause 201.8.5.5.2. Voltage measured in point 100 Ω every time interval (∆t) 0,02 ms obtained from multisim software simulation. The result of simulation indicated if peak voltage increased, then value RL was used approach zero. In other side, measured Voltage data was used as parameter to calculate total E2in every range of RLvalue, then result E2total was compared to ES value to get energy ratio value. Value RL= 1 Ω was the most efficient because has ratio energy value 98,45% with E2 = 393,80 joule, while energy ratio when RL= 10 Ω was not efficient because only had energy ratio value 89,58% with E2 = 358,33 joule.

ANALYSIS OF CLIMATE ANOMALY IMPACT OF LA-NINA 2010 ON EXPERIMENT FIELD SEMBAWA RESEARCH CENTER, SOUTH SUMATERA Jamin Saputra
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

La-Nina is an unusual climate changes that occurs in several years. The effect of climate anomaly on rubber plantation is very influential on rubber production. This research aims as analysis of La-Nina 2010 effects on experiment field Sembawa Research Centre. This research was carried out in experiment field Sembawa Research Centre at 2011. Research was conducted by analyzing the impact of rainfall in 2009 and 2010 on the availability of seed, reduction of tapping days, and rubber crop productivity. The results showed that the presence of La-Nina climate anomalies resulted in the availability of seed decreased by 50% for rootstock breeding. In addition, rubber production in the clones are susceptible to Colletotrichum leaf fall disease is reduced. Furthermore, tapping days were reduced 9 days because of the high intensity of rainfall. On the contrary, La-Nina caused a time delay of leaf fall sesion, so it did not give negative impact on productivity of Experiment Field Sembawa Research Centre. Attempts to reduce the impact of La-Nina climate anomalies have been done by planting specific location rubber clones, using rain guard technology, and giving extra fertilizer on the plants which are suffered by leaf fall disease.

PERANCANGAN TANGKI BIOGAS PORTABEL SEBAGAI SARANA PRODUKSI ENERGI ALTERNATIF DI PEDESAAN M. C. Tri Atmodjo; Dadang Rosadi; Hardoyo Hardoyo
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

The increasing price of fossil-based energy and the higher amount of its consumption amidst its limited source would be the main reasons to develop some alternative energy from renewable sources. One of such alternative energy sources is the one from biomass waste, which is easy to find in rural areas as well as in animal husbandry. This biogas portable tank is designed for 160 liters of volume and 75% of this volume is filled with slurry which composes 1 part of cow manure and 1 part of fresh water. The Hydrolysis Retention Time of this slurry is about 20 days and everyday 14.5 liters of old slurry is replaced with the new one and will produce biogas by about 0.56 until 0.68 cubic meters per day, equal to 0.26 kg of LPG. By the assumption that the price of LPG is Rp6,000 per kg and 30 days of operation in a month, the biogas portable tank would get revenue which can cover cost production of the tank in less than 2 years of operation. With its simple design, small scale and lower cost production, and operability, the biogas portable tank is suitable for the production process of biogas and for fulfilling energy needs in rural areas.

SEAGRASS ECOSYSTEM IN THE COASTAL AREA OF SOUTHERN KEI BESAR DISTRICT, SOUTHEAST MALUKU REGENCY, PROVINCE OF MALUKU, INDONESIA Marsya Jaqualine Rugebregt
Widyariset Vol 1, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

The aims of this research were to determine the seagrass bed coverage and its ecosystem condition. The research result obtained ten seagrass species, those are Cymodocea serullata, Cymodecea rotundata, Syringodium isotefilium, Halophila ovalis, Halophila minor, Enhalus acroides, Halodule pinifolia, Halodule uninervis, Thalassia hempirichii, and Thalossodenron ciliatum. The biggest percentage of seagrass coverage was found in Tamangil Nuhuten (50,75 %), followed by Tamangil Nuhuyanat (62,61%), Soindrat (51,53%), Ngafan (58,70%), dan Tutrean (57,15%).Water quality of this area was good for the life of seagrass.

UTILIZATION OF BIOFLOCS FROM NURSERY FOR FRESHWATER PRAWN (Macrobrachium rosenbergii) LARVAE REARING Asep Sopian; Ikhsan Khasani; Fajar A
Widyariset Vol 16, No 2 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

The Bioflocs technology development in the aquaculture industry is very prospective due to many inheren benefits, especially for water quality control and nutrition substitution. This study aims to determine the effect of media bioflocs nursery for freshwater prawn (Macrobrachium rosenbergii) larvae rearing. The experiment design with completely randomized design was used in the study with 3 treatments and 6 replications. The treatment used were: A. without bioflocs addition (control), B. the addition of 5 ml bioflocs, and C. the addition of 10 ml bioflocs. The 1st day old larvae was used in the study and reared on a 60 l conical fiberglass at 50 ind/l of density. The main parameters were larvae development or larval stage index (LSI) and survival rate (SR). Based on the result of statistical analysis showed that the addition of bioflocs affected survival rate significantly (p<0.05) and the best survival values generated by the addition biofloc treatment as much as 5 ml.

METODE PEMBUKTIAN KESAHIHAN HADIS Usman Usman
Widyariset Vol 12, No 3 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Everyone who will convey Tradition of The Prophet (hadits) must check his integrity so that not everybody can convey hadits. Appearance fake haditses push hadits experts to specify a method for proving hadits authenticity, by checking sanad (the transmission of hadits) and matan (text of hadits). Sanad and matan are two fundamental elements on every Hadits. There is a very tightly bearing that cannot be disassociated between sanad and matan. One saying can be called as Hadits, if founded the existence of transmission of rawi (transmitterr) which waschronically up to the first source (Prophet Muhamad). On the contrary, the network of carriers, though to Prophet, without existence of message (text) which informed can not be called as Hadits. Existence of method for proving hadits authenticity is expected to become reference for everyone wishing to convey hadits correctly.

THE POTENTIAL YIELD OF THREE NEW PADDY VARIETIES AT KEBON AGUNG – BANTUL Setyorini Widyayanti; Kristamtini Kristamtini; Sutarno Sutarno
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Food needs will increase every year due to population growth and changing patterns of food consumption, so it needs a good cultivation technology to increase the productivity and national food production. Some efforts have been done including the use of paddy new varieties (VUB). The purpose of this research was to investigate the yield of three new varieties of paddy rice fi eld in Imogiri, Bantul, Yogyakarta Province. The experiment was carried out in Jayan village, Kebon Agung, Imogiri, Bantul, Yogyakarta from August to November 2009. The experiment was arranged in a randomized block design with three new varieties of Inpari 1, Conde and Dodokan as treatments. Each treatment had three replicates and conducted in the total area of 3,000 m2. The results showed that Inpari 1 had the highest dry harvested grain crops (11.64 t / ha GKP), followed by Conde (11.28 t / ha GKP) and Dodokan (9.47 t / ha GKP), respectively.

GOOGLE INSIGHTS FOR SEARCH FEATURES ANALYSIS Moh. Muttaqin
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Google Insights for Search is a reliable application to know the search interests on Google search engine, furthermore this application usage can be developed to conduct the research of internet users searching behaviour. However, the limitations of tutorials that discuss this application’s features usage comprehensively resulted in some users unable to use it optimally. Google Insights for Search features analyzed by classifying the features group, list every feature, analyzed the variations of the value filled on these features and examined every link until the result page part to know its searching expandability. In this way, all the features functions and the optimal usage of Google Insights for Search will be explored.

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Contact Name
Andri Rahman

Contact Email
andri.agus.rahman@lipi.go.id

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widyariset@mail.lipi.go.id

Editorial Address
Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

Location
Kab. bogor,

Jawa barat

INDONESIA