Showing 581 - 600 results of 655 for search '"nitrate"', query time: 0.06s Refine Results
  1. 581

    Restructuring of small-scale constructed wetland systems and treatability of individual household wastewater through natural process by S. Mokatip, K. Chunkao, W. Wararam, S. Bualert, O. Phewnil, T. Pattamapitoon, N. Semvimol, P. Maskulrath, P. Rollap, S. Thaipakdee

    Published 2024-07-01
    “…The analysis parameters were the biological oxygen demand, total nitrogen, nitrate, total phosphorous and phosphate, and other parameters related to domestic wastewater treatment efficacy.FINDING: This study reveals that the domestic wastewater in Phetchaburi Province initially has a high organic content, leading to a biochemical oxygen demand: nitrogen: phosphorous ratio of 100:2.5:0.2 favoring anaerobic degradation. …”
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  2. 582

    Alterations in physicochemical parameters of water and the growth performance of juvenile beluga Huso huso in earthen ponds by Hashem Noferesti, Hojatollah Jafaryan, Rahman Patimar, Hossein Adineh

    Published 2024-06-01
    “…Water samples were collected weekly, and physicochemical parameters were analyzed using standard methods.Results and Discussion: Temperature (12.5 to 16.6°C), turbidity (0.50 to 50.92 NTU), dissolved oxygen (10.90 to 6.25 mg/L), pH (7.62 to 8.92), alkalinity (160 to 223 mg/L), phosphate (0.17 to 0.73 mg/L), nitrate (0.24 to 1.67 mg/L), and electrical conductivity (1240 to 1342 µmhos/cm) levels for the growth of beluga were within the optimal ranges. …”
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  3. 583

    A novel methodology for assessing the hygroscopicity of aerosol filter samples by N. Raparthi, A. S. Wexler, A. S. Wexler, A. S. Wexler, A. S. Wexler, A. M. Dillner

    Published 2025-02-01
    “…<p>Due to US regulations, concentrations of hygroscopic inorganic sulfate and nitrate have declined in recent years, leading to an increased importance of the hygroscopic nature of organic matter (OM). …”
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  4. 584

    One-Pot Synthesis and Enhanced Vis-NIR Photocatalytic Activity of NiTiO<sub>3</sub>/TiO<sub>2</sub> Templated by Waste Tobacco Stem-Silks by Weidong Yuan, Xiaohong Chen, Yi Zhao, Ying Fang, Han Zhang, Daomei Chen, Jiaqiang Wang

    Published 2025-01-01
    “…Herein, NiTiO<sub>3</sub>/TiO<sub>2</sub> was synthesized by using waste tobacco stem-silks as biotemplates and tetra-tert-butyl orthotitanate and nickel nitrate as precursors in a one-pot procedure. NiTiO<sub>3</sub>(1.0)/TiO<sub>2</sub>(TSS) with a mass percent of Ni 1.0% exhibited very high visible-light photocatalytic efficiency in photodegradation of tetracycline hydrochloride (TC), which is 8.0 and 2.3 times higher than TiO<sub>2</sub> prepared without templates and TiO<sub>2</sub>(TSS) prepared without Ni, respectively. …”
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  5. 585

    Role of Cylindrospermopsis sp. in vertical nitrogen changes observed in tropical oxidation wastewater treatment ponds by M. Srichomphu, O. Phewnil, T. Pattamapitoon, Ratcha Chaichana, K. Chunkao, W. Wararam, N. Dampin, P. Maskulrath

    Published 2024-01-01
    “…In the density of phytoplankton which were collected by measuring 20 liters of water and filtered using a 36-micron plankton net, calculated and counted under a high magnification microscope, as the species are classified according the taxonomy.FINDINGS: The results of the wastewater quality were as follows: the content of suspended solids was 65–81 milligram per liter, water temperature was 31.8–33.2°C, potential of hydrogen was 8.7–9.2, total nitrogen content was 4.0–5.3 milligram per liter, ammonium content was 0.03–0.06 milligram per liter, nitrate content was 0.09–0.12 milligram per liter, total phosphorus content was 0.9–1.3 milligram per liter, and phosphate content was 0.4–0.5 milligram per liter. …”
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  6. 586

    Temperature Sensitivity Response of Soil Enzyme Activity to Simulated Climate Change at Growth Stages of Winter Wheat by Yaokun Jiang, Bingbing Lu, Meng Liang, Yang Wu, Yuanze Li, Ziwen Zhao, Guobin Liu, Sha Xue

    Published 2025-01-01
    “…Above-ground biomass, soil total dissolved nitrogen, and nitrate nitrogen were identified as the primary factors influencing soil C, N, and P cycling enzyme Q<sub>10</sub>. …”
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  7. 587

    Physicochemical dataset from Lima and Douro estuaries (Northwest Portugal)Zenodo by Vânia Freitas, C. Marisa R. Almeida, Sabrina M. Rodrigues, Rúben Pereira, Ana M. Gorito, Jacinto Cunha, Diogo M. Silva, Alexandre van Heerden, Sandra Ramos

    Published 2025-04-01
    “…The dataset includes: a) in-situ vertical profiles of water physicochemical parameters (temperature, salinity, pH, turbidity, dissolved oxygen concentration and saturation) collected at 8 sampling stations along the Lima estuary (during both ebb and flood tides) and at 11 stations along the Douro estuary (during flood tides); and b) chemical analyses data, including nutrients (nitrate, nitrite, phosphate, ammonium, and silica), chlorophyll a, total particulate matter, particulate organic matter, and key metal (copper, zinc, cadmium, iron, nickel, lead, manganese, and chromium) concentrations. …”
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  8. 588

    Blending of Slow-Release N Fertilizer and Urea Improve Rainfed Maize Yield and Nitrogen Use Efficiency While Reducing Apparent N Losses by Jinjin Guo, Hanran Yang, Yong Yuan, Pengzhou Yin, Nv Zhang, Zhizhao Lin, Qichang Ma, Qiliang Yang, Xiaogang Liu, Haidong Wang, Fucang Zhang

    Published 2024-12-01
    “…A two-year field experiment with U (urea), S (slow-release N fertilizer), and SU (blending of S and U) under four N application levels (N1: 90 kg ha<sup>−1</sup>, N2: 120 kg ha<sup>−1</sup>, N3: 180 kg ha<sup>−1</sup>, N4: 240 kg ha<sup>−1</sup>) was conducted to investigate their effects on ammonia (NH<sub>3</sub>) volatilization, residual soil nitrate N (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mrow><mi mathvariant="normal">N</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow><mrow><mo>−</mo></mrow></msubsup><mo>-</mo><mi mathvariant="normal">N</mi></mrow></semantics></math></inline-formula>), yield, NUE, apparent N losses of rainfed maize. …”
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  9. 589

    Effects of fine particulate matter and its chemical constituents on influenza-like illness in Guangzhou, China by Keyi Wu, Weidong Fan, Jing Wei, Jianyun Lu, Xiaowei Ma, Zelin Yuan, Zhiwei Huang, Qi Zhong, Yining Huang, Fei Zou, Xianbo Wu

    Published 2025-01-01
    “…Methods: Daily data on ILI cases, PM2.5 levels, and specific PM2.5 constituents (black carbon [BC], chlorine [Cl−], ammonia [NH4+], nitrate [NO3−], and sulfate [SO42−]) in Guangzhou, China, were collected for the period of 2014–2019. …”
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  10. 590

    Marine sponge symbiotic bacterial bioremediation against heavy metal pollutants in tiger prawns; Penaeus monodon culture medium by I. Marzuki, I. Pratama, R. Asaf, A. Athirah, K. Nisaa, N. Nurbaya, M. Muslimin, N. Nurhidayah, S. Suwardi, A. Sahrijanna, K. Kamaruddin

    Published 2024-07-01
    “…The physical and chemical characteristics and parameters, such as dissolved organic matter, nitrite, nitrate, and ammonia contents, of the cultivation water were monitored over a 30-day period. …”
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  11. 591

    Association between PM2.5 components and poor ovarian response in assisted reproductive technology patients: A retrospective cohort study identifying sensitive exposure windows in... by Rui-Ling Liu, Zhi-Lei Xu, Yu-Ling Hu, Xing-Yu Lv, Quan-Zi Yao, Jia-Liang He, Li-Juan Fu, Li-Hong Geng, Tong Wang, Zhao-Hui Zhong, Yi-Jian Zhu, Yu-Bin Ding

    Published 2025-02-01
    “…Environmental factors, particularly various components of fine particulate matter (PM2.5) (i.e., sulfate [SO42-], nitrate [NO3-], ammonium [NH4+], organic matter [OM] and black carbon [BC]), are increasingly recognized as potential risk factors for poor ovarian response (POR) in fertility treatments. …”
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  12. 592

    Long-term exposure to PM2.5 and its constituents and visual impairment in schoolchildren: A population-based survey in Guangdong province, China by Jia-Hui Li, Hui-Xian Zeng, Jing Wei, Qi-Zhen Wu, Shuang-Jian Qin, Qing-Guo Zeng, Bin Zhao, Guang-Hui Dong, Ji-Chuan Shen, Xiao-Wen Zeng

    Published 2025-01-01
    “…Methods: We conducted a large cross-sectional population-based study to recruit 59,054 schoolchildren from four cities in Guangdong province, China, and used the ChinaHighAirPollutants (CHAP) dataset to estimate 3-year average concentrations of PM2.5 and its constituents (black carbon (BC), organic matter (OM), nitrate (NO3–), sulfate (SO42−) and ammonium (NH4+)) based on individuals’ home addresses. …”
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  13. 593

    ارزیابی شاخص مرکب DRASTIC و شاخص آسیب‌پذیری نیترات در آلودگی منابع آب زیرزمینی، مطالعه موردی: آبخوان دشت کرمان-باغین... by علی بختیاری زاده, محمد نجف زاده, صدیقه محمدی

    Published 2023-12-01
    “…لذا، در پژوهش حاضر نیز از پارامترهای کاربری اراضی و خطر بالقوه مرتبط با کاربری اراضی به‌ترتیب برای محاسبه شاخص DRASTIC مرکب یا Composite DRASTIC (CD) و شاخص آسیب‌پذیری نیترات (Nitrate Vulnerability Index) استفاده شد. شاخص CD با اضافه کردن پارامتر کاربری اراضی به شاخص DRASTIC و شاخص NVI، با ضرب نقشه رستر رتبه‌بندی خطر بالقوه مرتبط با کاربری اراضی در شاخص DRASTIC، به‌دست آمد. …”
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  14. 594

    Investigating the hatchability and nauplii biometry of Artemia franciscana in unconventional waters of Sistan region, Southeast Iran by Hashem Khandan Barani, Abdolali Rahdari, Narjes Sanchooli, Ali Khosravanizadeh

    Published 2024-03-01
    “…Water quality parameters including temperature, pH, salinity, ammonia, nitrate, nitrite, sulfate, hardness, Cl, Mg and Cu were recorded using standard methods during the experiment. …”
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  15. 595

    Upper-tropospheric pollutants observed by MIPAS: geographic and seasonal variations by N. Glatthor, G. P. Stiller, T. von Clarmann, B. Funke, S. Kellmann, A. Linden

    Published 2025-01-01
    “…<p>We present a global climatology of upper-tropospheric hydrogen cyanide (HCN), carbon monoxide (CO), acetylene (<span class="inline-formula">C<sub>2</sub>H<sub>2</sub></span>), ethane (<span class="inline-formula">C<sub>2</sub>H<sub>6</sub></span>), peroxyacetyl nitrate (PAN), and formic acid (HCOOH) obtained from observations of the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on board the Environmental Satellite (Envisat) between 2002 and 2012. …”
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  16. 596

    Nitrification and denitrification in pond by Yuni Puji Pujihastuti

    Published 2011-01-01
    “…Nitrogen anorganic consist of ammonia, ammonium, nitrit, nitrat and nitrogen. Degradation of process metabolic biota culture waste can biologically be nitrat compound one of the forms that are not toxic in the nitrification process.  …”
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  17. 597

    Pharmacological Management of Esophageal Food Bolus Impaction by Yasir Mohammed Khayyat

    Published 2013-01-01
    “…Several agents were identified including Buscopan, Glucagon, nitrates, calcium channel blockers, and papaveretum. …”
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  18. 598

    Nutrient removal efficiency by floating macrophytes; Lemna minor and Azolla pinnata in a constructed wetland by F.M. Muvea, G.M. Ogendi, S.O. Omondi

    Published 2019-10-01
    “…The concentrations of nitrites and nitrates increased over the experimental period in all the treatments (<em>Azolla pinnata</em>,<em> Lemna minor</em> and control), and the increase between the sampling occasions was statistically significant for the two nutrients (Nitrates: F=24.78, P= 0.00; Nitrates: F=198.26, P= 0.00). …”
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  19. 599

    Groundwater quality and associated health risks in the Eastern Region of Ghana by Thomas Acquah, Miriam Appiah-Brempong, Geophrey Kwame Anornu

    Published 2025-01-01
    “…Non-carcinogenic health risk to infants, children and adults through nitrates, iron, manganese and fluorides ingestion was also assessed. …”
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  20. 600

    Water Nutrition and Quality Considerations for Cattle by Matt Hersom, Sonja Crawford

    Published 2008-02-01
    “… AN-195, a 4-page factsheet by Matt Hersom and Sonja Crawford, discusses water quality management issues for cattle, how to estimate water intake, quality factors such as pH, salinity, nitrates and nitrites, and contaminants and toxic elements. …”
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