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Academic literature on the topic 'Lead consentrations'
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Journal articles on the topic "Lead consentrations"
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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.
Full textAbstract:
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.
Dissertations / Theses on the topic "Lead consentrations"
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Fox, Ian, and n/a. "A study of particulate matter pollutants in the Canberra air shed, including total suspended particles PM10, lead and polycyclic aromatic hydrocarbons." University of Canberra. Resource, Environmental & Heritage Sciences, 1998. http://erl.canberra.edu.au./public/adt-AUC20060710.125220.
Full textAbstract:
Methods for the determination of Polycyclic Aromatic Hydrocarbons (PAHs)
associated with suspended participate matter were developed with the aim of
determining airborne concentrations and to investigate seasonal trends. Other
associate pollutants such as Total Suspended Particulate matter (TSP), Particulate
Matter with an equivalent aerodynamic diameter less than 10 micrometres (PM10)
and lead concentration were also reviewed to determine trends. Motor vehicle
emissions appear to be the source of the PAHs and differences between the types
and concentrations of PAHs detected at central business district sites verses
suburban sites were noted. Wind erosion, biomass burning, motor vehicle emissions
and industrial processes are sources of particulate matter in the atmosphere. Lead
comes mainly from motor vehicles emissions in the ACT with some lead possibly
from the burning of lead contaminated fuel. TSP and lead concentrations have
decreased since air quality monitoring began in the early 1980s. PM10 concentration
may also have fallen but the data set for PM10s is to small to draw any firm
conclusions. Only TSP lead concentrations displayed a seasonal pattern. The ACT
air pollution Act 1984 has placed restriction on the burning of fuels to improve air
quality in the ACT. The air quality in regards to TSP and lead is improving.
However, the only strong links between the Act and decreased pollutant
concentrations is the introduction of unleaded petrol and the decrease of airborne
lead concentrations.