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Search Results: 1 - 5 of 5 matches for " SISWO POLANDONO "
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Notes on Some Biological Aspects of Arctornis riguata Snellen (Lepidoptera: Lymantriidae)
HAYATI Journal of Biosciences , 2013,
Abstract: Arctornis riguata Snellen is one of lymantriids which attacked a vast range of mango trees in Probolinggo at the beginning of 2011. About 1.2% mango trees from nine sub-districts have been defoliated by the larvae of this species. The larvae of this genus have been reported to forage at Anacardiacea as well; however, they have never been reported to forage at cultivated mango trees in Indonesia. Since there is no biological information of this species, thus, a study on some biological aspects of this species is needed. This study was conducted in the field as well as in the laboratory during 4 months (March-July 2011). The diagnostic characters of this species are black scale at dorsal antenna on both male and female and slightly setae particularly at the costal angle of valve on the male genitalia. Life span of this species is in the range of 30-37 days. This study also found four natural enemies of A. riguata i.e.: Bleparipa sp. (Diptera: Tachinidae), Euagathis sp. (Hymenoptera: Brachonidae), Theronia sp. (Hymenoptera: Ichneumonidae), and Brachymeria lasus (Hymenoptera: Chalcididae). Moreover, a single fungal pathogen of this species also was identified, i.e. Isaria fumosorosea Wize. Having these results, we considered that to control A. riguata, one need to conserve the native natural enemies by manipulating their environment.
POLA PERUBAHAN MONO DAN DIASILGLISEROL DALAM REAKSI ETANOLISIS MINYAK SAWIT MERAH [Change Pattern of Mono and Diacylglycerol in Ethanolysis Reaction of Crude Palm Oil]
Asriani Hasanuddin,Mappiratu,Gatot Siswo Hutomo
Jurnal Teknologi dan Industri Pangan , 2003,
Abstract: The Changging Pattern of Mono and Diacylglycerol concentration as respon to Reaction time during ethanolysis of Crude Palm Oil was influenced by the ration of ethanol/CPO. By using the ration of 0.25-0.5, the changing pattern of MAG concentration followed the parabolic curve, while that of DAG. By using the ration of ethanol/CPO of 1.5, the change of MAG concentration followed polynomyal curve, while that of DAG followed hyperbolic curve. The changing pattern of MAG dan DAG concentration during ethanolysis reaction of crude palm oil may caused by difference of reactivity and position of fatty acid as well as reactivity of lipid group (TAG, DAG, and MAG)
Organic Fertilizer Production From Cattle Waste Vermicomposting Assisted By Lumbricus Rubellus
Siswo Sumardiono,R.P. Djoko Murwono
International Journal of Science and Engineering , 2011, DOI: 10.12777/ijse.v2i1.1235
Abstract: Composting is decomposition of compound in organic waste by specific treatment using microorganism aerobically. Natural composting for producing organic fertilizer from manure and market waste utilize long time processing and less equal to the market demand. Vermicomposting is a technique to produce high quality compos fertilizer from biodegradable garbage and mixture of red worm (Lumbricus Rubellus). In conventional compos production took 8 weeks of processing time, in vermicomposting only took half processing time of conventional technique. It is occurred by red worm additional ease cellulose degradation contain in manure which is could not decomposed with composting bacteria. The purposes of this research are to investigate the effect of manure comparison to red worm growth and to evaluate the effect of comparison between manure and market waste to red worm growth. This research was conducted by vary the weight of red worm (100 gr, 200 gr, 300 gr, 400 gr, 500 gr) and market waste addition (50 gr, 100 gr, 150 gr, 200 gr, 300 gr). Moreover, 3 kg of manure was mixed by various weight of red worm, while variation of market waste addition was involved 500 gr red worm and 3 kg manure mixture. Optimum increasing weight of red worm that was obtained by 100 gr red worm addition is 160 gr within 2 weeks. In added market waste variation, the highest increasing of red worm was resulted by 50 gr market waste addition, with 60 gr increasing weight of red worm. Production of casting fertilizer was highly effected by composition of used materials such as medium, manure and red worm comparison as well as market waste additional
Biogas Production Using Anaerobic Biodigester from Cassava Starch Effluent
S. Sunarso,B. Budiyono,Siswo Sumardiono
International Journal of Science and Engineering , 2010, DOI: 10.12777/ijse.v1i2.1230
Abstract: IKMs’ factory activity in Margoyoso produces liquid and solid wastes. The possible alternative was to use the liquid effluent as biogas raw material. This study focuses on the used of urea, ruminant, yeast, microalgae, the treatment of gelled and ungelled feed for biogas production, pH control during biogas production using buffer Na2CO3, and feeding management in the semi-continuous process of biogas production that perform at ambient temperature for 30 days. Ruminant bacteria, yeast, urea, and microalgae was added 10% (v/v), 0.08% (w/v), 0.04% (w/v), 50% (v/v) of mixing solution volume, respectively. The pH of slurry was adjusted with range 6.8-7.2 and was measured daily and corrected when necessary with Na2CO3. The total biogas production was measured daily by the water displacement technique. Biogas production from the ungelling and gelling mixture of cassava starch effluent, yeast, ruminant bacteria, and urea were 726.43 ml/g total solid and 198 ml/g total solid. Biogas production from ungelling mixture without yeast was 58.6 ml/g total solid. Biogas production from ungelling mixture added by microalgae without yeast was 58.72 ml/g total solid and that with yeast was 189 ml/g total solid. Biogas production from ungelling mixture of cassava starch effluent, yeast, ruminant bacteria, and urea in semi-continuous process was 581.15 ml/g total solid. Adding of microalgae as nitrogen source did not give significant effect to biogas production. But adding of yeast as substrate activator was very helpful to accelerate biogas production. The biogas production increased after cassava starch effluent and yeast was added. Requirement of sodium carbonate (Na2CO3) to increase alkalinity or buffering capacity of fermenting solution depends on pH-value
A. M. Meliala, SKM, DSP,Siswo Poerwanto, Msc, MPH
Media of Health Research and Development , 2012,
Abstract: Makalah ini akan mencoba menelaah ujud dan distribusi masalah kesehatan di beberapa propinsi di Indonesia, khususnya Irja, Maluku, Sulawesi, NTB, NTT dan Timtim. Dalam pembahasan disajikan faktor-faktor yang mempengaruhi situasi kesehatan di wilayah tersebut.
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