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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 510 Documents

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PERUBAHAN KONSENTRASI ALUMINIUM DAN SERAPAN FOSFOR OLEH TANAMAN PADA ULTISOL AKIBAT PEMBERIAN KOMPOS Imam Wahyudi
BUANA SAINS Vol 9, No 1 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

A glasshouse experiment was conducted to judge the beneficial effects of Gliricidia sepium and Tithonia diversifolia composts on plant growth improvement, P availability and reduction of aluminium concentration in an Ultisol. Thirteen treatments consisting of two composts, six rates of each compost (5, 7.5, 10, 20, 40 and 80 t/ha) and one control (no added compost) were arranged in a randomized block design with three replicates. Each mixture of compost and soil was placed in a pot containing 8 kg of soil, and maize of Srikandi cultivar was grown on it for 45 days. At harvest, plant P content, soil pH, and soil aluminium concentration were measured. Results of this study showed that application of Gliricidia and Tithonia composts significantly reduced Alo concentration, increased Alp content, increased soil pH, increased P availability, and increased P taken up by maize grown for 45 days. The optimum rate of both Gliricidia and Tithonia composts should be 45 t/ha. However, at the same rate, optimum production gained by application of Tithonia compost would be higher than that of Gliricidia. This was due primary to the difference contents of humid acid and fulvic acid of the composts

PENGARUH ENZIM BROMELIN DAN WAKTU INKUBASI PADA PROSES HIDROLISIS IKAN LEMURU MENJADI KECAP Taufik Iskandar; Desi Arena Widyasrini
BUANA SAINS Vol 9, No 2 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

The process of making fish ketchup used to take quite long time. There are many efforts to improve the technology; one of them is using proteolitic enzime as a catalist that has a function of breaking down protein into asam aminos. Anyway, the problem is that the pure proteolistic enzime costs very expensive. This research was trying to find the way to easily and less costly make proteolitic enzime, and highly to dissolve nitrogen as well. The extract of pineapples was then used in the hydrolisis process because it is known that it contains high quantity of bromelin enzime act as proteolitic enzime. A kind of fish called lemuru was choosen as a raw material of producing ketchup in this observation due to the high content of protein. The hydrolisis process is conducted in the room temperature by adding the extract of pineapples in some variety of concentration (6, 8, 10%) and using 8, 10, and 12 hours incubation time. The best result was at the concentration of 8% pineapple axtract and 10 hours incubation time. It produced totally 1,0233% nitrogen, contained of 0,86% dissolvent nitrogen, 27,5% dissolvent solid substance, 17% liquid volume and viscocity of 41,364%

PENGARUH SUBSTITUSI PENGGUNAAN TEPUNG KEONG MAS TERHADAP KONSUMSI PAKAN DAN KUALITAS PRODUKSI TELUR AYAM ARAB Akhadiah Afrila; Karunia Setyowati Suroto; Eka Fitasari
BUANA SAINS Vol 15, No 2 (2015)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v15i2.373

Pomacea canaliculata Lamarckis a land water snail,knowing as gold snail, that famously knowed as pestin the rice plant since 10 day age after transplanted. Harvest loss because this animal decreasing ricemild (gabah) range 16-40%. Arabian chicken (Gallus turcicus) basicly one ofnative chicken (buras) that already adapted it could be layed280 eggs and people consider that Arabian chicken egg is native chicken egg. The research was done to determine the precentage of gold snail powder (as alternative feed) that would give the best feed consumption andegg production quality. Field research used Completely Randomized Design replication with substitution of control feed with gold snail powder including P0 (basic/control feed without gold snail powder), P1 (97.5% control feed + 2.5% gold snail powder), P2 (95% control feed + 5% gold snail powder), P3 (92.5% control feed + 7.5% gold snail powder), and P4 (90% control feed + 10% gold snail powder), each treatments was repeatedly 5 times and if there were significant effect it would continued by Least Significant Different. The research showed that the using of gold snail powder doesn’t gives significant effect on feed consumption and FCR (feed convertion ratio). More higher of gold snail powder substitution couse the colour of egg yolk become tough, and also the egg heavy, egg diameter, and eggshell thickness become hight, but more highergold snail powdercousing the decreasing of egg yolk fat.10%.Gold snail powdersubstitution show the the best result on egg yolk colour, egg yolk fat, and higher eggsheel. It is suggested continued research usinggold snail powder more than 10% in feed formulation but giving attention on protein and energy balancing, and mineral content not decrease egg production.

EVALUASI SISTEM JARINGAN DRAINASE DI JALAN SOEKARNO HATTA MALANG Blasius Lobe Mato; Suhudi Suhudi
BUANA SAINS Vol 12, No 2 (2012)
Publisher : Universitas Tribhuwana Tunggadewi

Pond that happened in Soekarno Hatta Street Malang City reached height of ± 30 cm and duration of the pond was ± 25 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) 2,710 m3/s and channel capacity existing (Qke) 2,433 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) 1,10 m and the height of water surface is (h) 0,65 m, obtained plan channel capacity (Qkr) 2,895 m3/s. Final result of analysis showed Qa < Qkr, the flood will not happen and capacity control (∆Q) = 6,8%

KAJIAN HIDROLIS RUNTUHNYA EMBUNG JOHO DI KECAMATAN SEMEN KABUPATEN KEDIRI Suhudi Suhudi
BUANA SAINS Vol 8, No 2 (2008)
Publisher : Universitas Tribhuwana Tunggadewi

Dam Joho located in Kedak river with especial function as is ready standard water to resident in three villages. Execution of project of Dam Joho planned 210 calendar days at dry season, expected is final of December 2006 can finish. At mid of December happened rain with high intensity causing admission filling of water in accumulating basin sudden and happened by a problem of that is collapsing of Dam Joho. This Research aim to evaluate to collapse him of Dam Joho by comparing analysis charge floods of planning early and analysis charge floods pursuant to rainfall during 20 the last year. Besides, knowing stability storey; level of dam the at the of happened problem. Pursuant to information of executor contractor that face elevation irrigate moment happened to collapse him of Dam Joho is 510,30 m. Comparison of inflow discharge and outflow discharge can be obtained by interpolation, so that charge inflow obtained by 1,2249 multiplied with outflow discharge 139,603 m3/s, its result 171,003 m3/s at time period 193 year. Safety factor stability number of dam to stream of seepage and to slide evaluated in a condition face irrigate full in part of upstream of dam, exceeding from which is permitted so that happened to collapse him of Dam Joho

ANALISIS RESIDU PESTISIDA PADA JERUK MANIS DI KECAMATAN DAU, MALANG Astri Sumiati; Reza Prakoso Dwi Julianto
BUANA SAINS Vol 17, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi

Citrus is one type of fruit that is highly favored by the people. Citrus plants are vulnerable to pests and plant diseases that intensive use of pesticides in the field can not be avoided. Citrus fruits commonly consumed in the form of raw materials that need to be considered food quality and safety of citrus fruits to public health. This study aims to identify and analyze pesticide residues in citrus fruits in the district of Dau, Malang (a case study in the Village Tegalwaru subdistrict Dau, Malang) as one of the centers of citrus production in East Java with the use of pesticides are quite diverse. This research is a survey and observational with cross sectional approach. Data use of pesticides by farmers was measured by a survey conducted for the farmers and merchants. The sample was 3 kg of oranges produced by three farmers and 3 kg of oranges produced by 3 merchants Village Tegalwaru District of Dau, Malang where interviews illustrate the differences in the type and frequency of the use of pesticides during the growing season oranges, which is a high level (sample A ), medium (sample B) and low (sample C). The measurement results residues acephate, carbofuran, carbosulfan, diazinon, dimethomorp, fenobucarb, profenofos, pyrethrin everything is still below the Limit of Detection (LOD) testing in the laboratory PT. Angler Biochem Lab. In profenofos residue tests on samples found to be higher farmer is 0.108 ppm compared with a sample of traders is 0,050 ppm. The conclusions of this study are bauh oranges produced by farmers in the sub-district Tegalwaru Dau, Malang get evidence that pesticide residues are still below the prescribed MRL.

PEMANFAATAN BAGAS SEBAGAI CAMPURAN MEDIA PERTUMBUHAN JAMUR TIRAM PUTIH Kristianus Sunarjon Dasa; Astutik Astutik; Amir Hamzah
BUANA SAINS Vol 11, No 2 (2011)
Publisher : Universitas Tribhuwana Tunggadewi

Growth and development of white oyster mushroom are influenced by the mushroom seeds, planting substrate, environmental conditions, and media materials. A common type of media used is sawdust mushroom growers. Bagasse is a waste of sugar production as the highest cause of pollution (35%) but contains organic matter, minerals, crude fiber, crude protein and essential nutrients needed for growing oyster mushrooms. It is therefore necessary to study with the aim to determine the effect of bagasse as the mixed media production and quality of white oyster mushrooms. The experiment was conducted at PT Endang Mushroom, Tlogomas village, Lowok waru district, Malang city started from November until April 2011. The research used Completely Randomized Design with bagasse single-dose factor i.e. without bagasse/control (P0), 10% of bagasse (P1), 20% of bagasse (P2), 30% of bagasse (P3), and 40% of bagasse (P4). The observations made on the variables: time of fruit body appears, stalk length, stalk diameter, diameter of the hood, the number and weight of the wet weight of fruit. The results concluded that the use of bagasse as the mixture of sawdust medium effected on the growth of white oyster mushrooms. The addition of 40% bagasse was capable of producing fruit bodies appear as the fastest (28 days), the largest stem diameter (2.24 cm), the largest cap diameter (8.95 cm), the highest number of fruit (37.80 fruits) and wet weight reached 444.20 grams, of fruit bodies and wet weights did not differ erent as much as 30 % of bagasse

REDESAIN RUANG TERBUKA HIJAU TAMAN ALOK GALING DI KOTA SAMBAS Riyanto Djoko; A. Sudrajat
BUANA SAINS Vol 15, No 1 (2015)
Publisher : Universitas Tribhuwana Tunggadewi

Landscape can gives identity to a place, and hence diversity to the setting places of lives. Alok Galing Park as a Sambas’s area haven’t developed comprehensively yet. Considering proportion of functional and aesthetics aspects, which have ideal value in describing its development, hopped that Alok Galing Park become a harmony landscape as Sambas city’s indentity. The research goal is redesigning Alok Galing Park as city’s welcome area. The research was conducted by site-observation to collect data. Collected data consist of primary data include physical, biophysical, socio-cultural economic aespects, and secondary data that some relevant literatures. Data were analyzed descriptively. The results showed that redesigning Parks Alok Galing implemented by changing the land form which was originally seems like valleys into the hills. Ironwood (Eusideroxylon zwageri) is added as a city’s specific characteristic. Welcome Monument at the site will be retained in order to maintain the synergy between Saing Rambi Monument and Alok Galing Park. Several types of vegetation added like trees: Betel palm (Arace catechu), Auri (Acacia auriculiformis) and Japanese fern (Fellicium decipiens); shrubs: Skyflower (Duranta erecta) and Shoe flower (Hibiscus rosasinensis; groundcovers: Pinto nuts (Arachis pintoi) and Elephant grass (Pennisetum purpureum). Several site utilities such as plumbing installation, electrical and drainage network were added too

SEBARAN UNSUR HARA N, P, K DAN PH DALAM TANAH Bambang Siswanto
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Soil nutrient availability maps are needed to be used as a basis for managing fertilizer use, as well as soil acidity (pH) values. If the nutrient status of N, P, K and soil acidity is known, it is expected that the dosage of fertilization of each land can be done in accordance with thenutrient status. It can also reduce the cost of fertilization. This study aims to determine the factors of land affecting the distribution of nutrients N P K and soil pH. The research was conducted in Gugut Village, Rambipuji District, Jember from June to August 2016. The research was conducted by using free grid survey method with semi-detailed survey rate of 1: 25.000 scale. The distribution pattern of each nutrient status was analyzed by matrix method approach to find out the factors that most influence the distribution of nutrients N, P, K and pH. From the result of research, map of nutrient distribution of N, P, K is almost similar to the result of geological map overlay, landform, land use and altitude. According to Wilding and Drees (1983), the diversity of nutrient status can be due to differences in lithology / parent material, climate, erosion, biological influences, and hydrology. The N, P, K soil availability map only meets 32.76% of the elevation map section. Therefore, the temporal nutrient status mapping can not be generated based on existing land map units so it is advisable to use the rigid grid method. While soil pH maps are almost similar to overlays between geological maps, landforms, land use and climate.

ANALISIS PENDAPATAN DAN PERANAN WANITA DALAM USAHATANI TOMAT LAHAN KERING DI KABUPATEN GRESIK Ahmad Zubaidi; Astutik Astutik
BUANA SAINS Vol 10, No 2 (2010)
Publisher : Universitas Tribhuwana Tunggadewi

The aim of this research were a) To analysis influence of variable rent farm, price fertilize and labour fee to earnings of dry farming tomato. b) To study storey;level elegibility of dry farming tomato Countryside of Lasem District Of Sidayu Sub-Province of Gresik and c) To Analysis woman labour contribution and role of woman in decision making dry farming tomato. Methodologies used in this study approach qualitative and quantitative by applying case study strategy in this study. Data used in this analysis were with drawal of conclusion presented descriptively, and compilation of program by using method of Focus Group Discussion. Analysis and interprestasi result of research of solution and analysis, can be taken by conclusion that variable rent farm, price fertilize and labour fee by simultan have an effect on to earnings of tomato farming Countryside of Lasem District Of Sidayu Sub-Province of Gresik. And most having an effect on variable/signifikan to earnings of tomato variable rent farm count = 6,649 and value of P = 0,000) and also variable rent farm, price fertilize and labour fee give contribution 74,9% to earnings of farming tomato Countryside of Lasem District Of Sidayu, Sub-Province of Gresik while constribution woman labour activity of production of farming tomato in Countryside of Lasem equal to 54,14% and decision making which concerning tomato farming equal to 42,58

Page 28 of 51 | Total Record : 510

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