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BUANA SAINS

buanasains
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Published by Universitas Tribhuwana Tunggadewi

ISSN : 14121638 EISSN : 25275720 DOI : -

Core Subject : Science, Education,

Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics

BUANA SAINS p-ISSN : 1412-1638 | e-ISSN: 2527-5720 is a double-blind peer-reviewed, open-access journal, published by UNITRI PRESS. It publishes original and applied research in all areas of natural science. The Editorial goal is to provide a forum exchange and an interface between researchers and practitioners in any natural science related field.

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Articles 13 Documents

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Search results for , issue "Vol 7, No 2 (2007)" : 13 Documents clear

EVALUASI KAPASITAS SALURAN GUNA MENANGANI MASALAH BANJIR DI JALAN BENDUNGAN SUTAMI KOTA MALANG Suhudi Suhudi
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Pond that happened in Bendungan Sutami Street Malang City reached height of ± 50 cm and duration of the pond was ± 60 minutes. This condition resulted in broken traffic band and people took a longer other band. One of the generated impact of the existence of the pond was the damage on hard surface of the street. The final goal of this activity was in order that drainage network system can perform well in a long time according to the plan so that it can endure evaluated from construction facet and its function. The method used was by analysing flood discharge that happened (Qa) 0,3638 m3/s and channel capacity existing (Qke) 0,1268 m3/s, hereinafter evaluated and its result was that the existing channel is unable to conduct water well. The evaluation of channel capacity in handling the problem of flood can be conducted by dimension repeat channel. Dimension of channel plan in the form of square made from concrete coat with the width of channel base is (b) 0,35 m and the height of water surface is (h) 0,5 m, obtained plan channel capacity (Qkr) 0,3955 m3/s. Final result of analysis showed Qa < Qkr, the flood will not happen and capacity control (∆Q) = 8,7%

EFISIENSI PEMUPUKAN K DENGAN BOKASHI TINJA PADA CABAI BESAR Widowati Widowati; Astutik Astutik; Elisabeth Nogo
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Problem of feces closely related to environmental problems. Application of a proper feces handling technology is expected to lessen the negative environmental impact of feces. Objective of the research was to study the ability of feces bokashi in improving availability of soil K and K uptake by big chili. Twelve treatments comprising three levels of feces bokashi and four levels of KCl fertilizer applications were arranged in a factorial block design with there replicates. Results of the study showed that interaction of bokashi feces and KCl fertilizer influenced chili dry weight production. Application of 15 ton feces bokashi /ha combined with 350 ton KCl/ha yielded highest production of dry weight. Application KCl fertilizer significantly affected dry weight and fruit of crop. While application of feces bokashi did not significantly influence K uptake by chili, application of KCl fertilizer significantly influenced K upatek by chili. K fertilization efficiency of 133 % was obtained by application of 15 ton feces bokashi/ha combined with 350 kg KCl/ha

KAJIAN ZAT PENGATUR TUMBUH DALAM PERKEMBANGAN KULTUR JARINGAN KRISAN Astutik Astutik
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Alar accelerates the growth of aksiler shoots, shortens stem joint and strengthens the stem. Alar addition into the medium is assumed to be able to increase the success of Chrysanthemum tissue culture in quantity and quality. The objectives of this research were: (1) learning and finding the influence of Auksin, Sitokinin, and Alar on number of Chrysanthemum shoots produced. (2) producing a shorter plantlet having a big stem diameter until it is appropriate to be arranged as pot flower. The research used a factorial complete random design consisting of 3 factors. Factor I: Kinds of Auksin (4) are IAA, NAA, IBA, 2,4-D each with the same concentration of 0,1 mg/I. Factor II: Kinds of Sitokinin (2): 1 mg/I Benzylzdenine (BA) and 1 mg/I Kinetin. Factor III: Alar of 0 mg/I and 1 mg/I. Parameters observed when the shoot grows were leaf number, shoot number, plantlet height, stem diameter; when the root grows, root number, root length, and acclimatization success percentage. The results showed that (1) addition of Alar into Chrysanthemum micro-propagation medium had no influence on the shoot number. BA 1 mg/I produced a better shoot number (3,54 shoots/explant) by the 5th week of culture. (2) 1 mg/I Alar application combined with 1 mg/I BA and 0,1 mg/I IAA produced shorter plantlet, followed by the combination of 1 mg/I Kinetin and 0,1 mg/I IBA. (3) the use of 1 mg/I Alar combined with 1 mg/I BA and all kinds of Auksin produced bigger stem diameter plantlet. (4) (1 mg/I) Alar was good to produce Chrysanthemum flower for big stem and shorter plant

PRODUKSI DAN KECERNAAN IN-VITRO RUMPUT GAJAH PADA BERBAGAI IMBANGAN PUPUK NITROGEN DAN SULFUR Sri Susanti
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

The research was aimed to observe production and in-vitro digestibility of Elephant grass with different ratio N : S fertilizer. This research with experimental methods was executed in two phases. The first phase was Elephant grass cultivation with different ratio of N : S fertilizer. The second phase was measurement of in-vitro digestibility. Seven treatments and three blocks were arranged in a Randomized Block Design. The results showed that fertilization of S did not significantly affect production and digestibility of Elephant grass. Over application S fertilizer reduced in-vitro digestibility (dry matter / DM and organic matter / OM). The best of DM digestibility (62,59%) and OM digestibility (65,41%) were at ratio N : S fertililzer = 300 : 0

PEMANFAATAN PATI UBI JALAR SEBAGAI BAHAN BAKU PEMBUATAN PATI BERKATION DENGAN PROSES HIDROLISIS Nana Dyah Siswati; Siltje Rivana; Zuroida Novi A.
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Cationic starch is as modified starch that is used in paper industry as glue, additive and surface sizing agent. Modification of starch will happen under gelatinization temperature. To avoid the gelatinization an alkaline salt of Na2SO4 is need. This experiment was done by using sweet potato starch reacted with nitrogen containing dimethyl ammonium chloride. Effects of adding Na2SO4 at concentrations of 0,5, 1, 1,5, 2, 2,5% of the total material weight and at 40; 50; 60; 70;80 oC heating temperature were measured for this study. To indicate the best quality of cationic starch DS (Substitution Degree) standard grade available in paper industry between 0,02 – 0,04.was used. The best result was reached on concentration of 1% Na2SO4 and 40 oC heating temperature, the yield was 91,71% and DS grade was 0.036 (meeting the DS standard grade)

PERAN ASAM HUMAT DAN FULVAT DARI KOMPOS DALAM DETOKSIFIKASI ALUMINIUM PADA TANAH MASAM Imam Wahyudi
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

A study that was aimed to elucidate roles of Gliricidia sepium and Tithonia diversifolia composts and their extracted humic and fulvic acids on aluminum concentration in an Ultisol was conducted in a laboratory. Those composts and humic and fulvic acids extracted from them were mixed with soil and incubated for 90 days. Results of the study showed that the highest decrease in exchangeable Al concentration (90,5%) was observed for Tithonia fulvic acid treatment during 90 days, followed by Tithonia compost (88,4%), Gliricidia fulcic acid (82,3%), Gliricida compost (82,2%), Gliricidia humic acid (82,3%), and Tithonia humic acid (75,7%) treatments. In general, rate of change in exchangeable concentration was fast for the first 45 days, but it then slowed down during the second 45 days (45-90 days). This was particularly observed for humic and fulvic acid treatments, whereas compost treatment still showed subsequent decrease. It was concluded that roles of humic and fulvic acid in reducing exchangeable Al was only a short term, whereas compost played roles in a long term. In terms of capability in reducing exchangeable Al, Tithonia compost and its humic and fulvic acids was better than Gliricidia compost and its humic and fulvic acids

POTENSI TANAMAN MAKROHIDROFITA DAN SEMIHIDROFITA UNTUK REMEDIASI LIMBAH CAIR PABRIK TAPIOKA Eko Rini Indriyatie
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Potensial role of a macrohydrophyte plant (Veyivera zizanioides) and four semihydrophyte plants (Ipomoea aquatica, Cyperus iria, Commelina nudiflora, Oryza sativa) as remediators of liquid waste of tapioca industry was tested in a glasshouse for 35 days under conditions that resemble to wet and polyculture systems. Results dhowed that all type of plants grew normally on media containing tapioca liquid waste. Total biomass of Ipomoea aquatica and polyculture grown in wet conditions were 32,35 g and 38,44 g, respectively. This were higher than those of control (30,53 g and 36,39 g). Those of V. zizanioides, Cyperus iria, Commelina nudiflora and Oryza sativa were inversely observed. Hawever, V. zizanioides showed the highest tollerance index value (120,99%) compared to that of Ipomoea aquatica (91,21 %), Cyperus iria (56,62 %), Commelina nudiflora (89,63 %), Oryza sativa (83,13 %), and polyculture (62,25 %)

ANALISIS SOSIAL EKONOMI PERANAN PEREMPUAN PEDESAAN DI DALAM KELUARGA DAN MASYARAKAT Dina Novia Priminingtyas
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

This an explanatory research was aimed to describe roles of rural women eithin family and society at Mangunrejo village of Kepanjen District, Malang Regency. The Multiple Linear Regression Analysis showed that education and working time strongly vorrelated to. women’s income. Averages of women’s income contributed to 48,22% and single mother was able to gain 100%. It means that women’s income is not only secondary income but also primary income. Family has held importance key role to defence social stability, include women’s role in family, career and social activity. Women have to adaptate with their social environment to carry out their roles in family and social community to raise the family’s capital. Women’s roles are able to integrate to their hearth and behavior

PENGOLAHAN NUGGET KOMPOSIT DENGAN BAHAN BAKU AMPAS TAHU DAN DAGING IKAN HIU Wahyu Mushollaeni; Samsuri Tirtosastro
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

The aims of this research were to elucidate the best proportion of solid tofu’s waste and shark meats that produced composite nugget with better chemical, physical and organoleptical characteristics. Three treatments, i.e. nugget A (40% solid tofu’s wastes, 35% shark meats), B (50% solid tofu’s wastes, 25% shark meats), C (60% solid tofu’s wastes, 15% shark meats) were arranged in Completely Randomized Design with three replicates. Analysis factors were performed for water content, ash content, protein content, fat content, carbohydrate content, amino acid, calories and organoleptics (aromas and flavours). Results of this research showed that nugget composite type A posed the highest quality

PENDAPATAN USAHA PENGGEMUKAN SAPI POTONG DI DESA PACAR KELING KECAMATAN KEJAYAN KABUPATEN PASURUAN Asnah Asnah
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v7i2.194

Cut-cow fattening business has been developing for the last ten years due to increasing meat demand in line with increasing population. Such a business, however, is still faced by various constraints related to low capital from the breeders, lack of skills and experiences especially in cows’ health and weaknesses of local breeds. The aim of this research was to study the cost, revenue, income, efficiency and break even point of cut-cow fattening business. The study was conducted on farmers’ group of Sumber Rejeki, Pacar Keling, Kejayan District of Pasuruan Regency. The results showed that based on cots, revenue and income, the business was feasible as indicated by the revenue cost ratio of 1,2. The break even point of this business was 18,193 cows and Rp 10.107, 47/kg life weight

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