Showing 381 - 400 results of 810 for search '"nitrate"', query time: 0.05s Refine Results
  1. 381

    Ground Water Quality Determination of former Lake Haramaya, Haramaya District, Eastern Haranghe Zone, Oroma Regional State, Ethiopia by Zinabu Tebeje Zewdu

    Published 2013-07-01
    “…Based on TDS and hardness the samples were classified as fresh and very hard water. 33.3 percent of Fluoride (mg/l) and 66.67 percent of Nitrate (mg/l) results were higher than WHO recommended value with mean of 0.88 ± 0.18 and 17.6 ± 4.4 respectively. 66.7 percent of the turbidity was found to be above the WHO limit and 83.3 percent of the samples have total colifoms above the guideline value and it reveal the necessity of treatment before use. …”
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  2. 382

    Responses of endogenous proline in rice seedlings under chromium exposure by X.Z. Yu, M.R. Lu

    Published 2016-12-01
    “…Hydroponic experiments were performed to exam the dynamic change of endogenous proline in rice seedlings exposed to potassium chromate chromium (VI) or chromium nitrate chromium (III). Although accumulation of both chromium species in rice seedlings was obvious, more chromium was detected in plant tissues of rice seedlings exposed to chromium (III) than those in chromium (VI), majority being in roots rather than shoots. …”
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  3. 383

    Modulation of nitric oxide synthase activity in macrophages by P. G. Jorens, K. E. Matthys, H. Bult

    Published 1995-01-01
    “…NO decomposes into other nitrogen oxides such as nitrite (NO2−) and nitrate (NO3−), and in the presence of superoxide anion to the potent oxidizing agent peroxynitrite (ONOO−). …”
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  4. 384

    Examining the optimum concentrations of CuO, ZnO, TiO2, and GO in porous asphalt for urban surface runoff using response surface Methodology by Ramtin Sobhkhiz Foumani, Esmaeil Fatehifar, Taher Rajaee

    Published 2025-01-01
    “…Graphene oxide and titanium oxide asphalts reduced the levels of specific pollutants: phosphate, lead, zinc, nitrate, and TSS.…”
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  5. 385

    Spatial Distribution of Nitrogen on Grazed Karst Landscapes by Douglas G. Boyer, Ghiath A. Alloush

    Published 2001-01-01
    “…An estimated one-third of the region’s farms, cattle, and agricultural market value are located on karst terrain. Mean nitrate concentrations in several karst springs in southeastern West Virginia exhibit a strong linear relationship with the percentage of agriculture land cover. …”
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  6. 386

    Penggunaan Tetes Telinga Serum Autologous dengan Amnion untuk Penutupan Perforasi Membran Timpani by Hidayatul Fitria, Yan Edward

    Published 2012-07-01
    “…Salah satunya dengan mengkaustik tepi perforasi dengan menggunakan silver nitrat untuk membuat luka baru, kemudian digunakan amnion sebagai jembatan (bridge) dan faktor regulasi yang terdapat pada tetes telinga serum autologous. …”
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  7. 387

    Assessment of Near-Bottom Water Quality of Southwestern Coast of Sarawak, Borneo, Malaysia: A Multivariate Statistical Approach by Chen-Lin Soo, Cheng-Ann Chen, Shabdin Mohd-Long

    Published 2017-01-01
    “…Deterioration in coastal water quality has been observed in different regions of Sarawak corresponding to land use patterns in the region. Nevertheless, nitrate-nitrogen exceeded the guideline value at all sampling stations along the coastline. …”
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  8. 388

    Anion effect on obtaining nano-sized metal particules by reduction reaction by Sebati İlhan, Melda Bolat, Kadir Erol, Dursun Ali Köse

    Published 2022-06-01
    “…This work makes a research on the anion effects on the size mass nanoparticules of metals Cu(II), Ni(II), Co(II), Zn(II) and Mn(II) after reduction to nano size of sodium bor hidrur which belongs to salt of asetat and chlor, nitrate, sulfate. Depending on the radius ratios and solubility values of metal cations and anions, the nanoparticle obtained from Cu(CH3COO)2 salt has the smallest radius. …”
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  9. 389

    Surface Chemistry Aspects of Ion Exchange in Basic Copper Salts by Sebastian Skupiński, Marta Kalbarczyk, Daniel Kamiński, Marek Kosmulski

    Published 2024-12-01
    “…By contrast, attempts to convert brochantite into basic iodide, acetate, nitrate, or rhodanide in a similar way failed, that is, the powder after shaking with solutions containing excess corresponding anions still showed the powder X-ray diffraction pattern of brochantite. …”
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  10. 390

    Impacts of Effluents on the Limnology of a Tropical River, Southwestern Nigeria by Abeke Adedolapo Ayoade, A Olajumoke Olusegun

    Published 2013-07-01
    “…The mean biochemical oxygen demand (106.9 ± 58.25 mg/l), Nitrate (40 ± 30.8 mg/l), dissolved oxygen (4.2 ± 2.16 mg/l) and total suspended solids (124.02 ± 16.09 mg/l) were not within permissible standard limits suitable for aquatic life and domestic purposes. …”
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  11. 391

    2D Electrical Imaging Surveys for Leachate Plume Migration at an Old Dump Site in Ibadan South Western Nigeria: A Case Study by Dare Omolayo, Fatoba Julius Tope

    Published 2014-01-01
    “…All the traverses show areas of very low resistivity values ranging between 4 ohm-m and 13.8 ohm-m; in addition to this, the water samples collected from hand dug wells that surround the dump site show high total dissolved solids (TDS) with an average value of 2033 mg/L, high conductivity with an average value of 2868 mg/L, and high nitrate value (63 mg/L); these values are above the World Health Organization (WHO) permissible values. …”
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  12. 392

    Preparation and Characterization of Nickel Ferrite-SiO2/Ag Core/Shell Nanocomposites by I. G. Blanco-Esqueda, G. Ortega-Zarzosa, J. R. Martínez, A. L. Guerrero

    Published 2015-01-01
    “…Then, silver nanoparticles were incorporated by hydrolysis-condensation of tetraethyl orthosilicate, which contains silver nitrate on the surface of the nickel ferrite-SiO2 core/shell. …”
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  13. 393

    Green Synthesis of Trimetallic Nanocomposite (Ru/Ag/Pd)-Np and Its In Vitro Antimicrobial and Anticancer Activities by Shaimaa Hussein, Ayman M. Mahmoud, Hassan A. Elgebaly, Omnia Magdy Hendawy, Emad H. M. Hassanein, Shaima M. N. Moustafa, Nasser F. Alotaibi, Amr M. Nassar

    Published 2022-01-01
    “…In this study, we used the aqueous extract of garlic tunicate leaf to reduce a mixture of equal amounts of ruthenium chloride, silver nitrate, and palladium acetate for the biosynthesis of ruthenium/silver/palladium trimetallic nanocomposite (Ru/Ag/Pd)-Np. …”
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  14. 394

    Water quality assessment of Bone River using STORET method by Miftahul Khair Kadim, Nuralim Pasisingi

    Published 2024-12-01
    “…There were 12 water quality parameters measured: temperature, TSS, DO, pH, COD, BOD, nitrate, phosphate, ammonia, and the heavy metals (Pb, Cd, and Hg) concentration. …”
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  15. 395

    Growth Of black sea cucumber Holothuria atra in an integrated aquaculture system by Maureen Mercy Pattinasarany, Elizabeth Miklen Palinussa, Jolen Matakupan

    Published 2024-12-01
    “…Water quality parameters were measured in situ every day except for TOM, ammonia, and nitrate which were measured at the beginning, middle, and end of the study.  …”
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  16. 396

    Nitrogen Use Efficiency and Gaseous Nitrogen Losses from the Concentrated Liquid Fraction of Pig Slurries by G. L. Velthof, R. P. J. J. Rietra

    Published 2019-01-01
    “…The lowest apparent N recovery (ANR) in the pot experiment with grass was obtained for incorporated pig slurry (30–39%) and surface-applied MC (33–38%), while the highest ANRs were obtained for liquid ammonium nitrate (45–53%) and acidified MC (43–55%). It is concluded that MCs have a similar N fertilizer value as mineral N fertilizers if NH3 emission is reduced by incorporation or acidification.…”
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  17. 397

    The Use of a New Passive Sampler for Ozone and Nitrogen Oxides Monitoring in Ecological Effects Research by Franco De Santis, Tuncay Dogeroglu, Sabrina Menichelli, Caterina Vazzana, Ivo Allegrini

    Published 2001-01-01
    “…The diffusive sampler makes use of nitrite for ozone determination whereas for nitrogen oxides and nitrogen dioxide an active carbon tissue impregnated with sodium carbonate is used. Nitrate and nitrite, the formation of which is proportional to the pollutant concentration and sampling duration, are the two species analysed, respectively. …”
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  18. 398

    Studies of the Effect of Crosslinking in the Strongly Basic Anion Exchanger Dowex 1 and the HNO Concentration Employed on the Separation of the Sm–Nd Pair in the Polar Organic Solv... by Z. Hubicki, M. Olszak

    Published 2001-04-01
    “…The most effective results were obtained in the 90% v/v CH 3 OH–10% v/v 7 M HNO 3 system employing the anion exchanger Dowex 1 × 4 allowing 0.11 kg samarium(III) to be purified on 1 dm 3 ion exchanger in the nitrate form and leading to a decrease in the micro-component content to a value below 10 −3 %.…”
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  19. 399

    Bismuth Schiff base complex and its oxide nanoparticles as photocatalyst for the removal of dyes from water by Behrouz Shaabani, Shadi Soleimaninia

    Published 2025-01-01
    “…This work investigates the synthesis of bismuth complexes with the salicylidine Schiff base ligand of H2L through hydrothermal and solvothermal methods, the preparation of bismuth oxide nanoparticles from these complexes, and the synthesis of bismuth oxide nanoparticles from bismuth nitrate. To characterize the products, several techniques including infrared, UV–vis, X‐ray diffraction (XRD), energy‐dispersive X‐ray analysis, and scanning electron microscopy (SEM) have been used. …”
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  20. 400

    De Alessandri a Ibáñez: las relaciones económicas entre Chile y España en los años veinte (1920-1931) by Juan Luis Carrellán Ruiz

    Published 2015-01-01
    “…In the economic part, from the First World War the commercial scale was favourable to Chile and especially to the sales of his nitrate on the Spanish market, crucial moment for the discovery of much cheaper synthetic saltpeters. …”
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