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1
Ezraneti, Riri. "Pengaruh merkuri nitrat [Hg (NO3)2] dengan konsentrasi berbeda terhadap benih ikan kakap putih (Lates calcarifer Bloch): histologi insang." Acta Aquatica: Aquatic Sciences Journal 3, no. 1 (April 27, 2016): 18. http://dx.doi.org/10.29103/aa.v3i1.333.
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Banyaknya industri yang berkembang dewasa menyebabkan meningkatnya kadar logam berat seperti merkuri dalam perairan. Penelitian ini bertujuan untuk mengetahui pengaruh [Hg (NO3)2] dengan konsentrasi yang berbeda terhadap benih ikan kakap putih (L. calcarifer): histologi insang. Dalam penelitian ini, ikan dipaparkan dengan konsentrasi 3,16 x 10-2 ppm, 9,99 x 10-2 ppm, 3,16 x 10-1 ppm dan 9,97 x 10-1 ppm. Total ikan yang digunakan untuk histologi adalah 15 ekor. Hasil penelitian menunjukkan bahwa semakin tinggi konsentrasi [Hg (NO3)2] maka kerusakan pada jaringan insang ikan juga akan meningkat dan mempercepat waktu kematian ikan. Kerusakan yang terjadi yaitu hipertropi dan hiperplasia pada sel epitel insang, fuse pada lamela sekunder dan haemorhage di insang pada konsentrasi [Hg (NO3)2] yang lebih tinggi.Many industries today lead to increased levels of heavy metals such as mercury in water. This research aims to determine the effect of different concentrations of [Hg (NO3) 2] to Asean Sea Bass (L. calcarifer): Gill Histology. In this study, this fishes was treated with 3,16 x 10-2 ppm, 9,99 x 10-2 ppm, 3,16 x 10-1 ppm, and 9,97 x 10-1 ppm. Total fishes used for histological study was 15 fishes. Results of this research showed that increasing the consentrations of the [Hg(NO3)2] will also increase the damage on the stomach structure and fasten the mortality time of the fish. Damage that occurs is hypertrophy and hyperplacia on epitel cells, fuse of secundary lamellae and haemorhage on gill that were exposed to high consentration of [Hg(NO3)2].
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Cahyanto, Tri, Tony Sudjarwo Sudjarwo, Rida Widayanti, and Mar’atus Shalikha. "PENGARUH AIR LIMBAH CELUPAN BATIK DI PARAKANNYASAG TASIKMALAYA TERHADAP PERTUMBUHAN KI APU (Pistia stratiotes L.)." Biota 3, no. 2 (August 8, 2017): 76. http://dx.doi.org/10.19109/biota.v3i2.1318.
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Batik industry produces waste water containing chromium which can be harmful for ecosystem and human health. There had been research aimed to find out the influence of batik dye waste water in Parakannyasag Tasikmalaya on the growth of Pistia stratiotes L. Material of P. stratiotes was obtained from Indihiang rice field, Tasikmalaya. Waste water was taken from disposal of home batik dye industry in Parakannyasag Tasikmalaya. Study design used a Complete Randomized Design (RAL) with 5 treatments (0%, 25%, 50%, 75% and 100%) and 5 replications. The growth parameter include root length, leaf number, leaf length, leaf width, leaf broad, stolon number, stolon length, fresh weight and calculated of Relative Growth Rate (RGR), Doubling Time (DT) and leaf chlorophyll content were observed, The result showed growth of P. stratiotes at 25% concentration of wastewater was root length 2,2 cm, leaf number 3,5 strands, leaf length 0,3 mm, leaf width 0,4 mm, leaf broad 1,7 mm, stolon number 1,3 pieces, stolon length 1,8 cm and fresh weight 4,4 g; At 50% consentration of waste water showed root length 11,2 cm, leaf number 5,7 strands, leaf length 0,39 mm, leaf width 0,17 mm, leaf broad 1,3 mm, stolon number 1,6 pieces, length of stolon 2,6 cm and fresh weight 3,6 g. At 75% of waste water consentration showed, root length 5,5 cm, lef number4,8 strands, leaf length -0,1 mm, leaf width 0,1 mm, leaf broad -0,4 mm, stolon number 1,1 pieces, stolon length 2,0 cm and fresh weight 3,0 g; At 100% consentration of waste water showed root length 6,6 cm, leaf number 3,8 strands, leaf length -0,3 mm, leaf width -0,2 mm, leaf broad -0,5 mm, stolon number 0,9 pieces, length 1,9 cm stolon and fresh weight 2,9 g. The highest RGR value at 25% of wastewater concentration demonstrated 0,02 g/day and the highest DT value at 75% concentration of waste water demonstrated 48,0 days. The highest growth of root organs occured at 50% concentration of waste water and caused in optimum growth of P. stratiotes.
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Rostiny, Rostiny, Eha Djulaeha, Nike Hendrijantini, and Agus Pudijanto. "The effect of combined Moringa oleifera and demineralized freeze-dried bovine bone xenograft on the amount of osteoblast and osteoclast in the healing of tooth extraction socket of Cavia cobaya." Dental Journal (Majalah Kedokteran Gigi) 49, no. 1 (December 5, 2016): 37. http://dx.doi.org/10.20473/j.djmkg.v49.i1.p37-42.
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Background: Alveolar bone has an important role in providing support to teeth and dentures. Loss of support caused by alveolar resorption will cause functional and aesthetic problems. Preservation socket using bone graft is one way to maintain the dimensions of the alveolar bone. Moringa oleifera leaf can increase the activity of bone graft in the formation of new bone. Purpose: This study was aimed to evaluate the effect of combined Moringa oleivera leaf extract and demineralized freeze-dried bovine bone xenograft (DFDBBX) towards the formation of osteoblasts and osteoclasts in the tooth extraction sockets of cavia cobaya. Method: This study used 28 cavia cobayas divided into four groups. The combination of Moringa oleifera leaf extract and DFDBBX was inducted into the sockets of lower incisor tooth with certain dose in each group, ointment 1 containing PEG (a mixture of PEG 400 and PEG 4000) for control group, ointment 2 containing Moringa oleifera leaf extract and DFDBBX and PEG (at active subtance consentration of 0.5%) for group 1, ointment 3 containing Moringa oleifera leaf extract and DFDBBX and PEG (at active substance concentration of 1%) for group 2, and Ointment 4 containing Moringa oleifera leaf extract and DFDBBX and PEG (at active substance consentration of 2%) for group 3. paraffin block preparations were made for histopathology examination using hematoxylin eosin staining. Result: The results showed that there were significant differences of the number of osteoblasts and osteoclasts in each treatment group (p <0.05). Conclusion: It can be concluded that the combination of Moringa oleifera leaf extract and DFDBBX at 2% cocentration can increase the number of osteoblasts and decrease osteoclasts in the healing of tooth extraction sockets of cavia cobaya.
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Dani, Edi Usman, Rustam Baraq Noor, and Mahdalena Mahdalena. "Pertumbuhan Bibit Stum Mini Tanaman Karet (Hevea brasiliensis Muell Erg) Klon GT 1 Pada Berbagai Media Tanam Dan Pemberian Konsentrasi Rootone-F." Agrifarm : Jurnal Ilmu Pertanian 1, no. 2 (September 22, 2017): 63. http://dx.doi.org/10.24903/ajip.v1i2.73.
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The research aimed to identify the growing of Hevea brasiliensis Muell Erg) Klon GT1 on the Plant Media and Application of Rootone-F Consentration, as well as its interaction, and to find the proper concentration of Rootone-F for Hevea brasiliensis Muell Erg) Klon GT1. The research lasted for four months, from Februari to Mei 2009, at the Village of Loa Bakung Sub District of Samarinda. The research employed Completely Randomized Design with Factorial 4 x 4 and three replications. The first factor was Plant Media (M): top soil (m0); top soil + gambut + sand (2:1:1) (m1); top soil + gambut (3:1) (m2); top soil + sand (3:1) (m3). And the second factor was Rootone-F Consentration (D): no Rootone-F (d0); 2,5 g/litre water (d1); 5 g/litre water (d2); 7,5 g/litre water (d3). Results showed that: (1) significant responses the plant media on the parameters of height plant, number of leaf at the stage of 60 and 90 old days and diameter of stem; (2) significant responses on the application of Rootone-F on the parameters of height plant, number of leaf at the stage of 60 and 90 old days and diameter of stem; (3) there was no significant responses on all parameters upon the interaction between plant media and Rootone-F application.
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Hidayah, Irma. "PENINGKATAN KADAR ASAM LAKTAT DALAM DARAH SESUDAH BEKERJA." Indonesian Journal of Occupational Safety and Health 7, no. 2 (December 28, 2018): 131. http://dx.doi.org/10.20473/ijosh.v7i2.2018.131-141.
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Fatigue is a protective mechanism of the body to avoid further damage resulting in the recovery after the break. It can occur because of a accumulation of lactic acid due to continuous muscle contraction. One of the jobs in Gunawangsa Tidar Superblock Apartment Project at PT. PP (Persero) Tbk. which can lead to fatigue is formwork jobs. The purpose of the study was to analyze the increased concentration of lactic acid in the blood after work on the formwork workers Gunawangsa Tidar Superblock Apartment Project at PT. PP (Persero) Tbk. This study was an observational study with cross-sectional study design. Data obtained by using interviews with questionnaires about sexs, ages, length of work, duration of work, duration of rest, work day and perception of heat exposure. Beside that, data wa collected by measuring lactic acid consentration in the blood with the Accutrend Plus Brand Roche to 30 formwork workers. The independent variable was working while dependent variable was concentration of lactic acid in the blood. Data were tested using Wilcoxon Signed Ranks Test. The results showed that the average concentration of lactic acid in the blood before and after work, namely 0.263 mmol/l and 0.883 mmol/l. Based on statistical test of Wilcoxon Signed Ranks Test, was obtained N Positive Ranks = 16 with Asymp. Sig. (2-tailed) = 0.001. The conclusion of this study that there is an increase in lactic acid consentration in the blood after work.Keywords: blood, fatigue, lactic acid
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Nugraha, Aditya Hikmat, Dietriech G. Bengen, and Mujizat Kawaroe. "Physiological Response of Thallasia hemprichii on Antrophogenic Pressure In Pari Island, Seribu Islands, DKI Jakarta." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 22, no. 1 (March 2, 2017): 40. http://dx.doi.org/10.14710/ik.ijms.22.1.40-48.
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Seagrass ecosystem is one of tropical marine ecosystem and have important function. The function of ecosystem like a feeding and nursery ground for marine biota. Antrophogenic pressure is one of threat for seagrass ecosystem sustainability. This research study about effect antropogenic pressure for seagrass Thallasia hemprichii physiology response in some different location at Great Barrier Pari Island. The physiology response study cover growth, heavy metal bioaccumulation and histology analysis. The result shows that growth of leaf and rhizome Thalassia hemprichii have positif correlation with nutrient consentration in environment. The highest growth of leaf Thalassia hemprichii at 2nd station (4.16 mm.day-1) and the highest growth of rhizome Thalassia hemprichii at 4th station (1.3 mm.day-1). Seagrass can accumulation heavy metal from environment. The highest heavy metal accumulation is Pb. Not correlation between heavy metal consentration in seagrass with heavy metal concentration from environment. Analysis histology result that not damage seagrass tissue in all research station. Keyword : Bioacumulation,Growth,Physiology,Seagrass, Thalassia hemprichiiSeagrass ecosystems is one of the tropical marine ecosystems that have important functions, among others as a feeding and nursery ground for marine life. Anthropogenic stress is one of the threats that may inhibit the survival of seagrass ecosystems. This study examines the effects of anthropogenic pressures on physiological responses of seagrass Thalassia hemprichii at several different locations in Pari Islands. Physiological responses studied were leaves and rhizome growth, bioaccumulation of heavy metals and histological tissue analysis on seagrass. The results showed that the growth response of seagrass has a positive correlation with the nutrients in the environment. Seagrass leaf growth is highest at Station 2 (4.16 mm.day-1) and rhizome growth is highest at Station 4 (1.3 mm.day-1). Seagrass accumulate heavy metals from the environment and accumulation of heavy metals is highest on Pb. There is no correlation between the concentration of heavy metals in the seagrass and environment. The results of histological analysis showed that there was no damage to the tissue of seagrass leaf and rhizome. Keywords : Bio-acumulation, Growth, Physiology, Seagrass, Thalassia hemprichii
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Mubarok, Ahmad Thoriq, and Kun Harismah. "Natural Moisturizer Based on Green Grass Jelly (Cyclea Barbata Miers) with Stevia Leaf Addition (Stevia Rebaudiana Bertoni)." Jurnal Dedikasi 17, no. 1 (May 25, 2020): 1. http://dx.doi.org/10.22219/dedikasi.v17i1.12060.
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Skin moisturizer is a chemical that can protect the skin from the sun. Natural ingredients that can be used as a moisturizer are Green Grass Jelly. Green Grass Jelly leaves contain antioxidants that can prevent skin aging. The purpose of this study was to analyze the application of Green Grass Jelly and Stevia as a facial moisturizing ingredient. The variables used in this study were Green Grass Jelly consentration of 2.5%, 5%, 7.5%, and 10%. And stevia benefits 0%, 5%, 7.5%, 10% and 12.5%. the method used is Green Grass Jelly extraction, stevia extraction and moisturizing preparations. The test used were homogeneity analysis, pH measurement, specific gravity, dispersion, emulsion reliability, and organoleptic. Based on SNI-16-4399-1996 all samples that have been made meet the existing standards and also suitable sample formulations are F(D) ie 2.5% Green Grass Jelly composition and 5% stevia.
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Yanda, Yusrian S. O., Fahrurrozi Fahrurrozi, and Supanjani Supanjani. "Growing Caisim (Brassica juncea L.) Using Elaeisponic Production System." Akta Agrosia 21, no. 2 (December 31, 2018): 29–32. http://dx.doi.org/10.31186/aa.21.2.1-4.
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Elaeisponic is new introducing growing technique to produce vegetables by planting it in the frond based of oil palm trees (Elaeis guineensis Jacq.). However, there was no previous report on vegetable production by using elaeisponic production system, including the use of foliar fertilizers. This study aimed to determine the optimum consentrations and frequency of foliar fertilization for caisim grown in elaesisponic production system. An experiment was conducted in oil palm plantation area by using a factorial randomized complete block design with three replicates. The first factor of treatment consisted of three levels of foliar fertilizer concentration, 1 g l-1, 2 g l-1 and 3 g l-1, and the second factor was application frequency of foliar fertilizer, 7 days after transplanting (DAT), 7, 14 DAT and 7, 14, 21 DAT. Crop responses were determined on leaf greenness (SPAD index), shoot fresh weight (g), root fresh weight (g), leaf area (cm2) and plant dry weight. Results indicated that both concentration of foliar fertilizer and frequency of application as wells as its interaction did not significatly affect leaf greenness, leaf area, shoot fresh weight, root fresh weight and plant dry weight of caisim plants. Further research should be addressed on optimizing the use of palm oil frond bases as growing medium for vegetable production. Keywords: Elaeisponic Production System; Brassica juncea L; Foliar Fertilizer; Frequency of Application.
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Ramayanti, Indri, Kamalia Layal, and Putri Utami Pratiwi. "Effectiveness Test of Basil Leaf (Ocimum basilicum) Extract As Bioinsecticide In Mosquito Coil to Mosquito Aedes aegypti Death." Journal of Agromedicine and Medical Sciences 3, no. 2 (July 20, 2017): 6. http://dx.doi.org/10.19184/ams.v3i2.5063.
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Aedes aegypti is the vector of Dengue Haemorhagic fever. One of the method to prevent the spread of dengue fever is vector control. Principal activity to control this vector might decrease their population as transmitter of disease. One way of controlling mosquitoes vectors is using a bioinsecticide from basil leaf. Basil leaf extract has bioinsecticide effect to Aedes aegypti because basil leaf has some active compounds, such as Flavonoid, Saponin, Tannin and essential oils. These compound are toxic to mosquitoes. The purpose of this study was to determine the effectiveness of basil leaf (Ocimum basilicum L.) extract as mosquito coil against Aedes aegypti. The design of this study is xperimental study with 450 subjects of Aedes aegypti. Subjects were divided into six groups. They were 0% (negative control), 25%, 50%. 70%, 90% extract and Transfluthrin 0,03% (positive control). Each group contained 25 mosquitoes. Observation were carried out for 60 minutes with 10 minutes intervals and three times of repetition. The Data were analyzed by probit to calculate the value of Lethal consentration. The result of Probit Analyze showed that LC50 was at a concentration of 41,81% and LC90 was at concentration of 101.66%. The results showed that the extract of basil leaf (Ocimum basilicum L.) effective as Aedes aegypti bioinsecticide in mosquito coil.
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Syahputra, Edy, and Djoko Prijono. "SEDIAAN INSEKTISIDA CALOPHYLLUM SOULATTRI: AKTIVITAS INSEKTISIDA DAN RESIDU TERHADAP LARVA CROCIDOLOMIA PAVONANA DAN KEAMANAN PADA TANAMAN." Jurnal Hama dan Penyakit Tumbuhan Tropika 7, no. 1 (March 4, 2007): 21–29. http://dx.doi.org/10.23960/j.hptt.1721-29.
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Insecticide Preparation of Calophyllum soulattri: Insecticidal and Residual Activity Against Crocidolomia pavonana and Its Savety on Crops. Bioassays were done using leaf-residual method with Crocidolomia pavonana larvae as test insect. The number of dead larvae was recorded daily and was analyzed using probit method. The results showed that methanol extract, and dichloromethane fraction of C. soulattri bark possessed strong lethal effect against C. pavonana larvae with LC50 of 0.15%, and 0.05%, respectively. Dichloromethane fraction of 21 EC and 21 WP sprayed in suspension consentration of 1% on potted broccoli plant had residual activity around 16%-26,7% with range of half-lives of 5.9-7.7 days. Dichloromethane fraction at concentration of 0.2% and 0.3% formulated as EC did not cause phytotoxic to broccoli, tomato, chilli, soybean, red bean, onion, cucumber, and maize. Concerning with this potency, further studies are needed to identify insecticidal compounds.
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Pawinru, Ardiansyah S., and Andi Izham. "The effect of submersion denture base acrylic resin in a betel leaf ekstract solution against growth candida albicans." Journal of Dentomaxillofacial Science 2, no. 3 (December 1, 2017): 183. http://dx.doi.org/10.15562/jdmfs.v2i3.632.
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Objective: Microorganisms are often found in the oral cavity is candida albicans approximately 40 % in the oral cavity. Candida albicans can penetrate the acrylic resin that can infect the soft tissue and is the cause of denture stomatitis therefore the disinfection pf denture base is an important factor that must be done. The purpose of the research is to determine how the effect of submersion denture base acrylic resin in a betel leaf exstract solution against growth candida albicans.Material and Methods: This research is an experimental laboratory with a longitudinal design (follow-up) study. The Sampling method used is Total Sampling. This study used a sample of 12 pieces of denture base material acrylic resin to be suspended candida albicans fungus for 1x24 hours at 37oC.Results: The number of candida albicans colonies n denture base acrylic resin which soaked betel leaf extract solution that the dilution 10-1with consentration 2.5% total colony count is 2 and the results 2.0 x 101 CFU/ml , on a control solution that the dilution 10-2 total colony 355 and the result 3.55x104 CFU/ml , that the dilution 10-3 total colony 62 and the result 6.2x104 CFU/ml.Conclusion: Betel leaf extract (piper linn) can inhibit the growth of candida albicans on denture base of acrylic resin, betel leaf extract (piper linn) 5% is a minimal anti-fungal power that can be used as a disinfectant solution in acrylic resin denture.
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Goroshko, Dmitrii L'vovich, Nikolay G. Galkin, Evgeniy Anatolievich Chusovitin, Sergei A. Kitan, Evgeniy Y. Subbotin, and Andrei V. Tupkalo. "Photoconductivity and Conductivity Processes in Si-Sn Films Grown on Si(100) Substrate at Room Temperature." Defect and Diffusion Forum 386 (September 2018): 95–101. http://dx.doi.org/10.4028/www.scientific.net/ddf.386.95.
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Photoresistors based on amorphous Si-Sn thin films (270-285 nm) with different concentration of tin were studied by spectral measurements of photoconductivity at room temperature and by low-temperature measurements of the Hall effect . Electrical contacts to the Si-Sn film was formed by aluminum layer deposition. When the Al contact is illuminated, the spectral sensitivity of the photoresistor with Sn consentration of 19% extends to 2060 nm due to Schottky barrier influence. It was proved that the Si-Sn alloy film provides photoresponse with cut-off energy of 0.98 eV that is close to the indirect band gap in the Si-Sn film. Three deep acceptor levels with activation energies of 90, 114, and 173 meV were found in the Si-Sn thin film (20% Sn) in the temperature range of 50 – 300 K. Sequential activation of the deep levels and their competition leads to a nonmonotonic change of the Si-Sn film conductivity (0.025 - 5.0 (Ω×cm)-1) and mobility of holes (100 – 500 cm2/(V·s)). The transition to the intrinsic conductivity region of the amorphous Si-Sn film was not observed up to room temperature.
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Ma'wa, Niswatul, and Mohammad Hoesain. "Pengaruh konsentrasi ekstrak daun mimba dan biji pinang terhadap mortalitas keong mas (Pomacea canaliculata L.)." Jurnal Proteksi Tanaman Tropis 1, no. 1 (January 8, 2020): 9. http://dx.doi.org/10.19184/jptt.v1i1.15580.
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The golden Apple Snail is one of the rice pest that damaging by shredding the leaves of young plant. The common control has some negative impacts on the environment, so that the application of phyto-moluscides becomes a solution forming environmentally friendly agriculture. Neem and areca nut are one of the raw materials that can be used to control golden apple snails. This study aims to determine the effect of the concentration of neem and areca leaf extracts so the result of the study can be information and recomendations for controlling golden apple snail. This study uses a factorial Completely Randomized Design method, the first factor is extract raw material consisting of neem leaf, areca nut, and combination, while the second factor is consentration 0.25 g/L, 0.50 g/L, 0.75 g/L and control, each treatment gets 3 replications. Extract was applied by direct aplication method. Observations are carried out every 12 hours for 96 hours after aplication. The observed variable is behavior change, inhibition of eating activity and golden snail mortality. Data was analyzed by ANOVA then continued whit Duncan’s advanced test. Based on the result on the parameters that have been tested, raw materials and concentration have the effect of changing behavior from the start of the aplication, inhibition of eating activity, even an increase in mortality of up to 100% in the treatment of areca extract and combination application.
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Titiresmi, Titiresmi, and Titin Handayani. "PENGUJIAN TOLERANSI MANGROVE MUDA TERHADAP CEMARAN MINYAK BUMI." Jurnal Teknologi Lingkungan 13, no. 3 (December 13, 2016): 261. http://dx.doi.org/10.29122/jtl.v13i3.1395.
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Percobaan dilakukan di Rumah Kaca Balai Teknologi Lingkungan, BPPT , PUSPIPTEK Serpong Tangerang pada tahun 2011 . Penelitian ini diambil pada empat spesies mangrove muda (Rhizophora mucronata , Bruguiera sp , Sonneratia sp , dan Avicenia sp ) untuk menentukan dampak subletal dan kelainan pertumbuhan dipengaruhi oleh empat konsentrasi minyak ( 0 % , 10 % , 20 % , dan 30 % ) . Pengukuran dicatat meliputi: survival persen , tingkat pertumbuhan , perkembangan daun , persen defoliasi , jumlah pengembangan cabang , dan setiap pola pertumbuhan yang tidak biasa yang mungkin telah berkembang sebagai akibat dari kontaminasi minyak . Hasil penelitian ini menunjukkan bahwa tidak ada yang signifikan relatif kecil minyak terpengaruh. The konsentrasi tertinggi minyak pengobatan tidak mempengaruhi mangrove muda sampai akhir percobaan ini . Rhizophora mucronata menunjukkan mampu menurunkan TPH tertinggi di antara empat spesies mangrove di semua konsentrasi minyak pengobatan. Pengamatan pada enam minggu menunjukkan rata-rata penurunan TPH 38,1 % dari konsentrasi minyak 10 % , 21,1 % dari konsentrasi minyak 20 % dan 21,1 % dari konsentrasi minyak 30 % . Sementara pengamatan pada minggu kedua belas menunjukkan rata-rata penurunan TPH 81,6 % dari konsentrasi minyak 10 % , 69 % konsentrasi minyak 20 % dan 66 % dari konsentrasi minyak 30 % . Hal ini menunjukkan bahwa bakau muda yang efektif untuk menurunkan hidrokarbon minyak bumi . Kata kunci : polusi minyak , fitoremediasi , bakau , Rhizophora mucronata , Bruguiera sp , Sonneratia sp, Avicenia sp. AbstractThe experiment were conducted at Green House of Environmental Institute of Technology, BPPT, PUSPIPTEK Serpong Tangerang in 2011. The study were taken on four species of young mangroves (Rhizophora mucronata, Bruguiera sp, Sonneratia sp, and Avicenia sp) in order to determine any sublethal impact and growth abnormalities affected by four consentration of oil (0%, 10%, 20%, and 30%). Measurements recorded include: percent survival, growth rate, leaf development, percent defoliation, number of developing branches, and any unusual growth patterns that may have developed as a result of oil contamination. The results of this study showed that no significant deferent of oil affected. The highest consentration of treatment oil was not affects to young mangrove until the end of this experiment.Rhizophora mucronata showed able to degrade TPH highest among the four mangrove species in all oil concentrations treatment.Observation onsix weeks showed an average of TPH reduction 38.1% of10% oilconcentration, 21.1% of 20% oil concentration and 21.1% of 30% oil concentration.While observations onthe twelfth weeksshowed an average of TPH reduction 81.6% of 10% oil concentration, 69% of 20% oil concentration and 66% of 30% oil concentration. It shows that young mangrove effective to degrade petroleum hydrocarbons. Keywords:oil polution, phytoremediation, mangrove, Rhizophora mucronata, Bruguiera sp, Sonneratia sp, Avicenia sp.
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Moch. Amin Alamsjah, Sri Subekti, Laksmi Sulmartiwi, Mardiah Rahma Umami,. "Bioaktivitas Minyak Atsiri Daun Bandotan (Ageratum conyzoides) Terhadap Respon Fisiologis (Glukosa Darah Dan Tachiventilasi) Ikan Koi (Cyprinus carpio) [Bioactivity Essential Oil Of Bandotan Leaf (Ageratum conyzoides) On Koi (Cyprinus carpio) Physiological Responses (Blood Glucose And Tachiventilation) ]." Jurnal Ilmiah Perikanan dan Kelautan 6, no. 1 (January 19, 2019): 81. http://dx.doi.org/10.20473/jipk.v6i1.11388.
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Abstract Koi (C. carpio) is one of famous ornamental fish in Indonesia. Fish often be subject of change or stessor like physical, chemical and biology on culture. Stress in fish caused released cortisol hormone and cathecolamine hormone. Cathecolamine increase glicogenolisis, cardiovascular regulation and respiration fungtion. Blood glucose and tachiventilation (opercular movement) can indicate stress respon in fish. Essential oil of A. conyzoides have central analgesic activity. Analgesic drugs in vertebrae can reduce stress in fish. Essential oil shown inhibitory effect of GABA transminase, an enzime GABA (gammaaminobutryic acid) degradation which can provoking sedation. Sedation effect in fish reduce blood glucose and tachiventilation. Potency bioactive essential oil of bandotan leaf compound haven’t been know in aquaculture. The potency based of LC50 (Lethal Consentration 50 %) value Purpose of this research determined effect of essential oil Ageratum conyzoides leaf on Koi (Cyprinus carpio) Phsycology Response (Blood Glucose and Tachiventilation) every 4 hours durung 24 hours and LC50-24 hours. Research was conducted at Laboratory of Faculty of Fisheries and Marine Airlangga University Surabaya. Research design used Completely Randomized Design and followed by Duncan's Multiple range test. Results of analysis of variance (ANAVA) from early observation and every 4 hours during 24 hours day showed that each treatment of essential oil Ageratum conyzoides leaf gave a significantly different effect on the blood glucose and tachiventilation (P <0.05). The highest average of blood glucose was found in D treatment at second observation (443,67 mg/dl) and the lowest was found in C treatment (60,67 mg/dl). The highest average of tachiventilation was found in D treatment at first observation (1730 bit/9 minute) and the lowest was found in A treatment (437,67 bit/9 minute) at early observation. LC50-24 hours essenial oil Ageratum conyzoides leaf is 34,047 ppm. Based on measurements of water quality, treatments was still viable and good to supported viability of Cyprinus carpio during research, water temperature range between 29-31oC, range of dissolved oxigen 4-6 mg/l, pH ranges 7,5-8,3 and 0,0060,27 mg/l on ammonia.
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Gusakova, E. A., and I. V. Gorodetskaya. "Somatic and behavioral reactions in rats under the modeling of the stress of “deficiency of time”." Proceedings of the National Academy of Sciences of Belarus, Medical series 16, no. 3 (September 16, 2019): 298–306. http://dx.doi.org/10.29235/1814-6023-2019-16-3-298-306.
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In experiments on 60 white outbred male rats, the effect of the stress of “deficiency of time” on somatic (relative masses of the adrenal glands, thymus and spleen, gastric mucosa, consentrations of corticosteroids and insulin in the blood) and behavioral (vertical and horizontal motor activity) indicators of stress-reactions, physical endurance of animals, thyroid function (serum concentration of total and free fractions of triiodothyronine and thyroxine, thyrotropic hormone) is considered.As a result of the study, it was found that the stress of “deficiency of time” causes an increase in the relative mass of the adrenal glands (by 31 %), a decrease in relative masses of the thymus and spleen (by 26 and 14 %), damage to the gastric mucosa (in 80 % rats with a severity 1 point in 20 % rats, 2 or 3 points in the remaining 60 % in the 1:1 ratio; a multiplicity of 2 hemorrhages per animal in 30 %, 3 in 40 % and 4 in 10 % rats, damage index is 4.7), changes in the serum concentration of corticosteroids (increase by 43 %) and insulin (decrease by 19 %) and leads to the activation of thyroid function (age concentration of total and free triiodothyronine and thyroxin increased by 18–32 %). Under the stress of “deficiency of time”, the horizontal locomotor activity and the physical endurance of animals increase, while their vertical locomotor and exploratory activity decreases. The proposed model allows studying the mechanisms of development of stress damage in order to develop new ways to limit the negative effects of emotional stress on human health.
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Mawuntu, Mayestic Silverly Chintami. "EFEKTIVITAS EKSTRAK DAUN SIRSAK DAN DAUN PEPAYA DALAM PENGENDALIAN Plutella xylostella L. (Lepidoptera; Yponomeutidae) PADA TANAMAN KUBIS DI KOTA TOMOHON." JURNAL ILMIAH SAINS 16, no. 1 (June 14, 2016): 24. http://dx.doi.org/10.35799/jis.16.1.2016.12468.
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ABSTRAK Tanaman Kubis merupakan salah satu tanaman yang banyak dibudidayakan di Kota Tomohon, Sulawesi Utara. Plutella xylostella L. adalah salah satu hama utama tanaman ini. Larva merusak tanaman saat berumur 2-6 minggu, dengan memakan permukaan bawah daun tanaman sampai pada kerusakan berat sehingga tanaman tidak dapat tumbuh normal ataupun dijual. Penelitian untuk mengetahui efektivitas pemberian ekstrak daun sirsak dan daun papaya terhadap mortalitas larva P. xylostella telah dilakukan dari bulan Juli sampai November 2015. Penelitian menggunakan Rancangan Acak Lengkap dengan 5 perlakuan konsentrasi yaitu Kontrol (0%), 5%, 10%, 15% dan 20%. Masing-masing dengan 5 ulangan. Hasil penelitian menunjukkan semakin tinggi konsentrasi ekstrak, semakin tinggi pula angka mortalitas larva P. xylostella. Dari hasil pengamatan menunjukkan pemberian ekstrak daun sirsak dan daun papaya efektif dalam mematikan larva hama P. xylostella dengan angka mortalitas tertinggi sebanyak 100% pada masing-masing perlakuan dengan konsentrasi ekstrak 20%. Kata Kunci : Tanaman Kubis; Insektsida nabati; Plutella xylostella THE EFFECTIVENESS OF EXTRACT SOURSOP LEAF AND PAPAYA LEAF IN CONTROL Plutella xylostella L. (Lepidoptera; Yponomeutidae) ON CABBAGE PLANTS IN TOMOHON CITY ABSTRACT Cabbagge is well-known plant that widely growth in Tomohon City, North Sulewesi. Plutella xylostella L. is one of the major pests on Cabbagge. Larvae damage the plant since 2-6 weeks old plants by eating the surface of the leaves until severe damages so the plants couldnot grow normally, neither to sell. The study was to verify effectivity of soursop leaves and papaya leaves ecstract to P. xylostella mortality that have been conducted from July to November 2015. The study used completely randomized design with 5 treatments and 5 replications with leaf ecstract consentrations used were 0% as control, 5%, 10%, 15% and 20%. The result from the observations showed that the test result of Soursop leaves and Papaya leaves ecstract showed a highly significant from each treatments to larvae mortality of P. xylostella. Higher concentrations of ecstract showed more higher mortality of P. xylostella larvae. This research also showed that rate number of P. xylostella mortality at each ecstract were at 20 % concentration of Soursop leaves and papaya leaves ecstract. Keywords : Cabbages; Biopesticides; Plutella xylostella
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Gogahu, Yelni, Song Ai Nio, and Parluhutan Siahaan. "Konsentrasi Klorofil pada Beberapa Varietas Tanaman Puring (Codiaeum varigatum L.)." Jurnal MIPA 5, no. 2 (August 2, 2016): 76. http://dx.doi.org/10.35799/jm.5.2.2016.12964.
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Tanaman puring memiliki varietas yang sangat banyak dan terdapat sekitar 260 varietas puring yang ada di Indonesia. Puring merupakan tanaman yang memiliki warna dan bentuk daun yang beragam seperti kuning, hijau, merah dan coklat sehingga tanaman puring dimanfaatkan sebagai tanaman hias warna-warni tersebut disebabkan karena adanya bermacam-macam pigmen warna didalam daun. Dalam proses fotosintesis klorofil atau pigmen hijau daun sangat diperlukan sehingga setiap daun sangat membutuhkan klorofil. Belum ada data yang menunjukkan apakah perbedaan dominansi warna pigmen daun juga mengandung perbedaan kandungan klorofilnya. Penelitian ini dilakukan untuk mengkaji pengaruh perbedaan warna daun pada 9 varietas dan perbedaan umur tanaman terhadap kandungan klorofil tanaman puring (puring cobra, puring spageti lokal, puring bor merah, puring jengkol, puring jempol, puring jet merah, puring kura-kura moncolor, puring bor cristata, puring lele) dan perbedaan umur daun tanaman terhadap kandungan klorofilnya. Hasil penelitian menunjukkan bahwa daun pada umur 3 bulan kandungan klorofilnya sama pada semua varietas baik kandungan konsentrasi klorofil total, klorofil a maupun klorofil b. Pada 3 varietas (puring cobra, puring spageti lokal dan puring bor merah) daun yang telah berumur 8 bulan mengandung konsentrasi klorofil total dan klorofil a yang berbeda antara daun muda dan daun tua sedangkan konsentrasi korofil b tidak berbeda pada semua varietas.Croton plants has so many varieties. Around 260 varieties of Croton plants are found in Indonesia. Croton plant is a plant with various color leaves such as yellow, green, red and brown which make Croton plant is used to be a house-plant. Those colors exist because of many color pigment in leaf. Every leaf needs chlorophyll or green pigment in photosynthesis process. There is no data that shows different color leaves contain different amount of chlorophyll. This research is done in order to find out the effects of difference in color leaves and plants age towards chlorophyll contents in Croton plants (puring cobra, puring spageti lokal, puring bor merah, puring jengkol, puring jempol, puring jet merah, puring kura-kura moncolor, puring bor cristata, puring lele) and different leaves age towards chlorophyll contents. The results showed that the leaf at the age of 3 months has the same chlorophyll contents whether in total chlorophyll, a chlorophyll ad b chlorophyll with the other varieties. The leaf in the age of 8 months in 3 varieties (puring cobra, puring spageti lokal dan puring bor merah) contains different consentration of total chlorophyll and a chlorophyll between young leaves and older leaves while the concentration of b chlorophyll does not differ at all varieties.
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Sulistyaningrum, Anna, Tri Yanto, and Rifda Naufalin. "Alteration of coconut sap quality due to the addition of natural preservatives." Jurnal Penelitian Pascapanen Pertanian 12, no. 3 (January 10, 2017): 137. http://dx.doi.org/10.21082/jpasca.v12n3.2015.137-146.
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<p>Coconut sap is easily fermented during storage, so it is necessary to add preservative. Farmers usually use a solution of lime with mangosteen rind to preserve the sap. The availability of these preservatives are limited, so many farmers used synthetic preservatives like sodium metabisulfite. Some natural preservatives that can be used as an alternative to extend the shelf life of coconut sap were betel leaves, clove leaves, guava leaves, secang wood, and tea leaves. These materials have bioactive components that possess antimicrobial activity.This research was aimed to 1) determine the effect of types and concentration of natural preservatives to preserve freshness of coconut sap and brown sugar qualities, 2) determine the effect of the storage time on the quality of coconut sap. The research consisted of two stages and used experimental method with Randomized Block Design. The treatment of first stage included the type of natural preservative (M), consentration of preservative (K), and storage duration (L), while the second stage consisted of the best three natural preservatives from first stage (S) and concentration of preservatives (R). The results of this research showed that the coconut sap that was added with clove leaves (M4) with concentration of 4.5% (K1) gave highest pH value, levels of sucrose, sensory value, and inhibition of both the storage of 4 and 8 hours, followed by guava leaves (M5) and mangosteen rind (M1). Brown sugar is added three types of preservatives showed that no difference on water content, ash content, reduction sugar and total sugar content. These parameters meet SNI standard, except ash content only mangosteen rind and clove leaf that meets SNI standard.</p><p> </p><p><strong>PERUBAHAN KUALITAS NIRA KELAPA AKIBAT PENAMBAHAN PENGAWET ALAMI</strong></p><p>Nira kelapa mudah terfermentasi selama penyimpanan, oleh karena itu diperlukan proses pengawetan. Petani biasanya menggunakan larutan kapur dengan kulit manggis untuk mengawetkan nira. Ketersediaan dari pengawet tersebut terbatas, sehingga banyak petani yang menggunakan bahan pengawet sintetis seperti natrium metabisulfit. Beberapa pengawet alami yang dapat dijadikan sebagai alternatif untuk memperpanjang umur simpan nira antara lain daun sirih, daun cengkeh, daun jambu biji, kayu secang, dan daun teh. Bahan-bahan tersebut memiliki komponen bioaktif yang mempunyai aktivitas antimikroba. Penelitian ini bertujuan untuk 1) mengetahui pengaruh jenis dan konsentrasi bahan pengawet alami dalam mempertahankan kesegaran nira dan kualitas gula merah, 2) mengetahui pengaruh lama penyimpanan terhadap kualitas nira kelapa. Penelitian ini terdiri dari dua tahap dan dilakukan dengan menggunakan metode eksperimen Rancangan Acak Kelompok (RAK). Perlakuan pada tahap pertama meliputi jenis pengawet alami (M), konsentrasi pengawet (K) dan lama simpan (L), sedangkan pada tahap kedua meliputi tiga jenis pengawet alami terbaik dari tahap pertama (S) dan konsentrasi pengawet (R). Hasil penelitian ini menunjukkan bahwa nira yang ditambah pengawet daun cengkeh (M4) dengan konsentrasi 4,5% (K1) memberikan nilai pH, kadar sukrosa, nilai sensori dan mempunyai daya hambat tertinggi baik pada penyimpanan 4 dan 8 jam, diikuti oleh pengawet daun jambu biji (M5) dan kulit manggis (M1). Gula merah yang ditambahkan dengan ketiga jenis pengawet terbaik tidak menunjukkan perbedaan terhadap kadar air, kadar abu, kadar gula reduksi dan kadar gula total. Ketiga parameter memenuhi standar SNI, kecuali kadar abu hanya pengawet kulit manggis dan daun cengkeh yang memenuhi standar SNI.</p>
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Widyati, Enny. "Memahami Komunikasi Tumbuhan-Tanah dalam Areal Rhizosfir untuk Optimasi Pengelolaan Lahan." Jurnal Sumberdaya Lahan 11, no. 1 (June 25, 2020): 33. http://dx.doi.org/10.21082/jsdl.v11n1.2017.33-42.
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<p><strong>Abstrak.</strong> Seperti halnya dunia manusia, tumbuhan juga mengembangkan sistem komunikasi untuk mencapai kesejahteraan hidupnya. Bahasa yang digunakan adalah senyawa kimia yang diproduksi oleh eksudat akar. Tumbuhan merupakan inisiator karena mereka yang memiliki tujuan untuk apa komunikasi dibangun. Tumbuhan mengeluarkan eksudat akar untuk memanggil atau untuk mengusir mikroba yang diinginkan. Tumbuhan mengirim surat undangan pada beberapa mikroba dengan mensekresikan eksudat akar. Untuk membangun asosiasi mikoriza tumbuhan mengeluarkan gula, asam amino dan strigolakton. Hal tersebut akan dibalas oleh fungi dengan mengeluarkan senyawa flavonoid yang menunjukkan spesifikasi jenis inang-mikoriza. Hadirnya senyawa flavonoid merupakan undangan bagi rhizobium pada tanaman legum untuk membangun asosiasi. Tumbuhan akan menyeleksi rhizobium yang akan diajak berasosiasi dengan mensekresikan senyawa kanavanin yang bersifat toksik. Kesalahan dalam mengeluarkan eksudat akar merupakan surat undangan yang keliru bagi tumbuhan. Dosis senyawa stigolakton yang terlalu rendah tidak akan dapat membentuk asosiasi mikoriza tetapi yang berkembang adalah patogen. Walaupun tumbuhan menghasilkan senyawa fitoantisipin untuk mencegah serangan patogen dan fitoaleksin ketika patogen sudah menginfeksi. Komunikasi akar dengan akar tumbuhan lain dilakukan dengan menghasilkan senyawa alelopati untuk membatasi pertumbuhan akar di sekelilingnya yang dianggap sebagai pesaing. Tanaman invasif atau gulma umumnya selain menghasilkan alelopati juga memproduksi katekin yang dapat membunuh mikroba menguntungkan pada tumbuhan setempat. Akibatnya tumbuhan lokal akan rentan terhadap serangan penyakit dan berujung pada kematian. Selain alelopati, untuk merespon kehadiran tetangganya tumbuhan juga menghasilkan senyawa glukosinolat yang jumlahnya makin meningkat sejalan dengan tingginya biodiversitas vegetasi. Senyawa ini merupakan senyawa beracun bagi patogen, sehingga tumbuhan yang dibudidayakan dengan pola monokultur menjadi rentan terhadap penyakit. Oleh karena itu agar tanah tetap memiliki kandungan senyawa glukosinolat yang memadai serta tetap memelihara kondisi rhizosfir yang dinamis perlu dilakukan pergiliran tanaman varietas lokal setelah beberapa rotasi tanaman.</p><p><em><strong>Abstract.</strong> Similar to human, plants also develop a communication system to achieve their prosperity. Plants utilize chemical compounds of their root exudates as the “languange”. Plants are the initiator of communications, since they define the purposes of building communication. Root exudates are released either to attract or to demenish the soil microbes target as an “invitation letter” to some microbes. To build a mycorrhizal association, for examples, plants issue sugars, amino acids and strygolactones to the rhizosphere. Fungi will reply the invitation by secreting flavonoid compounds that determine host-mycorrhizal specifications. The presence of flavonoids is another invitation to rhizobia to establish association in legume rhizosphere. Plants will select attracted bacteria to build the most host-specific rhizobium association by secreting canavanine compounds that are toxic to non-target rhizobia. Occasionally, an error happened in issuing invitation. When plant release strygolactone in a very low dosages, it will be failure to build mycorrhizal associations otherwise pathogen colonizations, although plants produce either phytoantisipine to prevent pathogens infection or phytoalexin to counter infected pathogens. Communication among roots of neighboring plants is conducted by producing allellopathy compound to limit root growth of the competitors. Invasive plants or weeds generally also produce catechine compounds over the allellophaty that will eliminate soil beneficial microbes of the indigenous plants. As a result, the native plants will be vulnerable to disease and lead to distinct. Responding to the presence of neighboring roots, plants also produce glucosinolate compounds. Glucocynolate consentration will be increased in line with the richness of vegetation biodiversity. These compounds are toxic to the pathogen, which is why plants cultivated in monoculture become more susceptible to disease. Furthermore, to improve soil glucocynolate and to manage the dynamics in the rhizosphere, need to a shift cultivation after several rotations of a commodity with the local varieties.</em></p>
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Setiawati, Wiwin, and Rini Murtiningsih. "Kompatibilitas Minyak Serai dengan Predator Menochilus sexmaculatus untuk Pengendalian Vektor Penyakit Virus Kuning." Jurnal Hortikultura 21, no. 4 (December 2, 2011): 344. http://dx.doi.org/10.21082/jhort.v21n4.2011.p344-352.
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Penggunaan insektisida kimia sintetis secara intensif di lapangan dapat mengurangi populasi musuh alami, sehingga mengakibatkan populasi hama meningkat. Bemisia tabaci merupakan salah satu hama penting pada tanaman cabai merah yang dapat menyebabkan kerusakan langsung dengan cara menghisap cairan tanaman dan tidak langsung menularkan penyakit virus kuning. Cara pengendalian yang ramah lingkungan merupakan faktor penting dalam menekan kehilangan yang diakibatkan oleh serangan B. tabaci. Penelitian bertujuan untuk mengetahui kompatibilitas insektisida nabati yang berasal dari minyak serai dengan predator Menochilus sexmaculatus dalam menekan populasi B. tabaci. Penelitian dilakukan di Laboratorium dan Rumah Kasa Balai Penelitian Tanaman Sayuran mulai bulan Juni sampai dengan Desember 2009. Penelitian menggunakan metode pencelupan (dipping method) untuk kutukebul, film kering (dry film), dan odor effect untuk predator M. sexmaculatus. Rancangan percobaan yang digunakan ialah acak kelompok terdiri atas enam perlakuan dan empat ulangan. Perlakuan yang digunakan ialah enam konsentrasi minyak serai yaitu 5.000, 4.000, 3.000, 2.000, 1.000, dan 0 ppm sebagai kontrol. Untuk menentukan nilai LC50 dan LT50 digunakan analisis Probit. Hasil penelitian menunjukkan bahwa aplikasi minyak serai pada konsentrasi 2.000-5.000 ppm efektif menekan populasi nimfa B. tabaci instar I dan II, sedangkan untuk instar III dan IV pada konsentrasi 3.000-5.000 ppm dengan nilai penekanan sebesar 92-98% bila dibandingkan dengan kontrol. Nilai LC50 untuk nimfa B. tabaci instar I-IV berturut-turut sebesar 1.266,48, 1.755,81, 2.305,46, dan 2.343,59 ppm. Pada konsentrasi 2.000 ppm, LT50 minyak serai untuk nimfa B. tabaci ialah sekitar 2,95 hari setelah perlakuan. Minyak serai yang aman untuk larva predator M. sexmaculatus ialah pada konsentrasi 1.000 ppm bila diaplikasikan secara kontak dan 1.000-2.000 ppm bila diaplikasikan sebagai odor effect. Minyak serai pada konsentrasi 1.000-5.000 ppm aman terhadap imago M. sexmaculatus. Konsentrasi 2.000 ppm minyak serai merupakan konsentrasi yang sesuai diaplikasikan sebagai insektisida alami untuk pengendalian B. tabaci, aman dan kompatibel dengan predator M. sexmaculatus. Berdasarkan hasil penelitian ini diketahui bahwa minyak serai dan M. sexmaculatus memiliki potensi dalam mengendalikan B. tabaci pada cabai.<br /><br /><br /><br />There is a tendency of diminishing the number of natural enemies caused by utilization of non-selective insecticides that lead to serious consequences for pest population dynamics. Bemisia tabaci is an extremely polyphagous pest that causes direct damage and can act as a viral vector on hot peppers causing yellow virus disease. The activity of natural enemies can be exploited by employing propers conservation and augmentation techniques. Natural enemies might play roles to control of B. tabaci on hot peppers. The study was conducted in the Laboratory and Screenhouse of IVEGRI from June to December 2009. The objective of this study was to determine compatibility of citronella oil with M. sexmaculatus to control B. tabaci. Dipping methods, dry film, and odor effect were used in this study. Randomized completely block design with six treatments and four replications was used in this study. The treatments were citronella oils at different consentration 5,000, 4,000, 3,000, 2,000, 1,000, and 0 ppm as a control and stages of B. tabaci (1st, 2nd, 3rd, and 4th instars) and M. sexmaculatus. Probit analysis was used to ditermine LC50 and LT50 value. The results indicated that citronella oils at concentration of 2,000-5,000 ppm was effective to control nymphs of B. tabaci at 1st and 2nd instar , while 3,000-5,000 ppm for 3rd and 4th instar. The first two nymphal stages were more susceptible to citronella oil compared to the third and fourth nymphal stage. LC50 value for first to fourth nymphal stage was 1,266.48; 1,755.81; 2,305.46, and 2,343.59 ppm respectively. The LT50 occurred at 2.95 days in all instar stages. Menochilus sexmaculatus predators were highly susceptible to the essential oil vapours and the selective toxicity ratio varied depending on the methods and stages. Citronella oil at 1,000-2,000 ppm was compatible with M. sexmaculatus larvae on odor effect and 1,000 ppm on dry film method. Menochilus sexmaculatus adult more tolerant to citronella oil compared to larvae stage at concentration 1,000-5,000 ppm. Concentration 2,000 ppm of citronella oil was the appropriate concentration applied as bioinsecticide for B. tabaci, safety and compatibility for M. sexmaculatus. Based on the study known citronella oil and M. sexmaculatus had potential to be incorporated in controlling B. tabaci on hot peppers.
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Ryabova, Ludmila I., and Marina E. Tamm. "Tm Doping of Lead Telluride." MRS Proceedings 301 (1993). http://dx.doi.org/10.1557/proc-301-225.
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ABSTRACTDoping with the rare earth elements is widely used for the improvement of parameters of the PbTe-based lasers. It has been found that Tm is a donor in PbTe, and the solubility of TmTe in PbTe does not exceed 7 - 8 mol.%. Electron concentration in obtained PbTe(Tm) crystals reaches 4.1020 cm-3 and depends on Tm content and on deviation from stoichiometry. The analysis of the magnetoresistance oscillation picture shows no variation of the energy spectrum parameters for Tm contents less than I at.%. The g-factor does not change as well. This may be due to a rather small exchange interaction between Tm atom, which is magnetic in both +2 and +3 valence states, and band electrons. The experimental data for PbTe(Tm) are compared with the properties of semimagnetic PbTe(Cr) with quite the same electron consentration value.
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Wahjono, Heru Dwi. "PEMANTAUAN KUALITAS UDARA DI WILAYAH SEKITAR SEMBURAN LUMPUR SIDOARJO." Jurnal Rekayasa Lingkungan 6, no. 1 (April 4, 2018). http://dx.doi.org/10.29122/jrl.v6i1.1908.
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Air quality changes due to the discharge gas in the vicinity of the location of bursts of mud in Sidoarjo disrupt the activities of people who live around. Concerns of the dangers caused by gas can increase the burden of the problems already experienced by them. Surveys measuring several parameters of gas in the villages around bursts mud needs to be done to provide clear information about the condition of air quality ambien. The measurement data processing and analysis results are expected to be used as an input when the decision is necessary to avoid another disaster due to the gas leak in that area.Keywords : Air Polution, Sidoarjo mudflow, Gas Consentration Monitoring, Bubble gas
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Kusumanegara, Kadek Seruni, Emma Rachmawati, and Ame Suciati Setiawan. "The difference of inhibitory zone between Katuk (Sauropus androgynous L. Merr.) leaf infusion and Roselle (Hibiscus sabdariffa L.) petals towards oral Candida albicans." Padjadjaran Journal of Dentistry 29, no. 2 (July 31, 2017). http://dx.doi.org/10.24198/pjd.vol29no2.13647.
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Introduction: Katuk (Sauropus androgynus L. Merr.) leaf and roselle (Hibiscus sabdariffa L.) are part of plants that have antifungal activity against Candida albicans. The purpose of this study was to examine the inhibitory zone of katuk leaf’s infusion compared to roselle petals towards the growth of oral Candida albicans. Methods: The research methods was experimental laboratory. Each of katuk leaf and roselle’s infusion were respectively made in four concentration, i.e 5, 10, 20, and 40%. The positive control was 2% ketoconazole, while negative control was sterile aquadest. Results: The result of the study showed that the mean of inhibitory zones of katuk leaf 5%, was 17.90±0.8 mm, katuk leaf of 10% was 19.67±1.78 mm, katuk leaf of 20% was 19.67±1.78 mm, and katuk leaf consentration of 40% was 22.93±1.00 mm, meanwhile the mean of inhibitions zones of roselle petals infusion of 5% shows its mean of 18.53±0.67 mm, roselle petals of 10% was 22.40±1.28 mm, roselle petals of 20% was 26.20±0.87 mm, and roselle petals of 40%was 29.47±2.87 mm. Conclusion: It can be concluded that the mean of inhibitions zones of katuk leaf’s infusion was smaller than roselle petals toward the growth of oral Candida albicans.
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Riza Linda, Widya Sri Rahayu Mukarlina. "Pertumbuhan Tanaman Selada (Lactuca sativa L. var. New Grand Rapids) menggunakan Teknologi Hidroponik Sistem Terapung (THST) Tanpa Sirkulasi dengan Penambahan Giberelin (GA3)." Jurnal Protobiont 7, no. 3 (October 11, 2018). http://dx.doi.org/10.26418/protobiont.v7i3.29084.
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Lettuce (Lactuca sativa L. var. New Grand Rapids) is a vegetable plant that has a contains high nutrients. Efforts that can increase the production of lettuce is using hydroponics technology and the addition of growth regulators is gibberellin (GA3). This research aims to determine the effect of addition of GA3 to gowth of lettuce using floating technology system of hydroponics without circulation. The research was conducted for four months from May to August 2017 in the Green House and Laboratory of Biology of the Faculty of Mathematics and Natural Sciences, Tanjungpura University Pontianak. This research used a completely randomized design with five treatments (K) and three repetitions. The treatments given is the addition of GA3 with different consentrations: K0 (Control), K1 (5 ppm), K2 (10 ppm), K3 (15 ppm), and K4 (20 ppm). The result showed that the addition of GA3 didn’t significant affect on the number of leaves, but showed a significantly affected the height, root lenght, leaf areas, and fresh weight.
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Tuna, Ismiranti D. A., Pemsi M. Wowor, and Henoch Awaloei. "Uji daya hambat ekstrak daun awar-awar (ficus septica burm.f) terhadap pertumbuhan bakteri staphylococcus aureus dan eschericia coli." Jurnal e-Biomedik 4, no. 2 (July 12, 2016). http://dx.doi.org/10.35790/ebm.4.2.2016.14656.
Full textAbstract:
Abstract: Awar-awar (Ficus septica Burm.F) is one of the plants that used by comunities. Based from the empiric data, this plant is believed have efficacy as a drug and could treat diseases. Staphylococcus aureus dan Eschericia coli are the most frequent causal organism in human bacterial infection. This study aimed to determine whether there is inhibition of leaf extract awar-awar against Staphylococcus aureus and Eschericia coli. This was a laboratory experimental with Kirby-Bauer pitting modification at Phytochemistry and Microbiology Laboratory of Sam Ratulangi University Faculty of Mathematics and natural Science. Awar-awar leaf extract was obtained from maceration process with 96% ethanol. Consentration of thick extract that was used were 100 mg/ml, 50 mg/ml, 25 mg/ml, 12,5 mg/ml. ciprofloxacin was used as positive control,and aquades was used as negative control. The result showed that the average of inhibition diemeters by awar-awar leaves were 100 mg/ml, 50 mg/ml, 25 mg/ml, 12,5 mg/ml respectively are 27,5 mm, 24,3 mm, 22,3 mm, 21,8 in Staphylococcus aureus, whereas in Eschericia coli were 24,8 mm, 21 mm, 18,3 mm, 17 mm. Conclusion: Awar-awar leaf extract has a potential inhibion effect on the growth of Staphylococcus aureus and Eschericia coli.Keywords: awar-awar leaves extract, staphylococcus aureus, eschericia coli, inhibition test. Abstrak: Tanaman awar-awar merupakan salah satu tanaman yang digunakan masyarakat untuk pengobatan. Berdasarkan data empiris, tanaman ini dipercaya memiliki khasiat sebagai obat dan bisa mengobati penyakit. Bakteri Staphylococcus aureus dan Eschericia coli merupakan penyebab infeksi utama pada manusia. Penelitian ini bertujuan untuk mengetahui ada tidaknya daya hambat ekstrak daun awar-awar terhadap bakteri Staphylococcus aureus dan Eschericia coli. Jenis penelitian ini ialah eksperimental laboratorium dengan modifikasi Kirby-Bauer sumuran di Laboratorium Fitokimia dan Mikrobiologi Fakultas MIPA Universitas sam Ratulangi. Ekstrak daun awar-awar diperoleh dari proses maserasi dengan etanol 96%. Konsentrasi ekstrak kental yang digunakan dalam penelitian ini ialah 100 mg/ml, 50 mg/ml, 25 mg/ml, 12,5 mg/ml. Siprofloksasin sebagai kontrol positif, dan akuades sebagai kontrol negatif. Hasil penelitian mendapatkan rata-rata diameter zona hambat ekstrak daun awar-awar konsentrasi 100 mg/ml, 50 mg/ml, 25 mg/ml, 12,5 mg/ml berturut-turut ialah 27,5 mm, 24,3 mm, 22,3 mm, 21,8 mm pada bakteri Staphylococcus aureus, sedangkan pada bakteri Eschericia coli ialah 24,8 mm, 21 mm, 18,3 mm, 17 mm. Simpulan: Ekstrak daun awar-awar berpotensi memiliki daya hambat terhadap pertumbuhan bakteri Staphylococcus aureus dan Eschericia coli. Kata kunci: ekstrak daun awar-awar, staphylococcus aureus, eschericia coli, uji daya hambat.