Showing 1,621 - 1,640 results of 3,087 for search '"nitrogen"', query time: 0.05s Refine Results
  1. 1621

    Structural, Surface and Catalytic Properties of Nano-Sized Ceria Catalysts by N.M. Deraz, A. Alarifi

    Published 2009-05-01
    “…These spherical substrates were examined using XRD and TEM methods, and by nitrogen adsorption studies at −196 °C. Subsequently, such cerium oxide particles prepared by calcination at 400–600 °C were used as catalysts for the conversion of isopropanol at 250–450 °C, using a flow method. …”
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  2. 1622

    ANALISIS KUALITAS GAS BUANG PADA STEAM BOILER BERBAHAN BAKAR BIO-SOLAR DAN BATU BARA by Moh. Rizal Ar Rasyid, Samsudin Anis, Susanto Susanto, Setio Wardana Danang

    Published 2024-12-01
    “…Steam boilers fueled by biodiesel and coal are one of the industrial activities that still produce exhaust emissions such as Total Particulate (PM), Sulfur Dioxide (SO2), Opacity, Nitrogen Oxide (NOx), and Carbon Monoxide (CO) which is very dangerous for public health and the environment. …”
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  3. 1623

    Thermal and calorimetric investigations of titania–silica composites by B Charmas, J Skubiszewska-Zięba, H Waniak-Nowicka

    Published 2017-09-01
    “…The porous structure of materials under investigations was characterized by the low-temperature nitrogen adsorption–desorption method as well as by power spectral density calculated from the calorimetric investigations of water confined in the pores. …”
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  4. 1624

    Study on The Influence of Direct Ground Liquid CO2 Injection on Soil Chemical Properties in Subsidence Areas under Shallow Buried Geological Conditions by Naifu Cao, Yuntao Liang, Gang Wang

    Published 2021-01-01
    “…By measuring the changes in the five indicators of soil air-dried and fresh sample including pH, available nitrogen, available potassium, water-soluble salt, and total organic carbon, the changes of pH and mineral content in the soil could be analyzed quantitatively and qualitatively at different time periods before and after CO2 injection. …”
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  5. 1625

    Relationship of Meteorological and Air Pollution Parameters with Pneumonia in Elderly Patients by Suleyman Serdar Tasci, Cemil Kavalci, Afsin Emre Kayipmaz

    Published 2018-01-01
    “…In this study, we aimed to evaluate the relationship between pneumonia and meteorological parameters (temperature, humidity, precipitation, airborne particles, sulfur dioxide (SO2), carbon monoxide (CO), nitrogen dioxide (NO2), nitrite oxide (NO), and nitric oxide (NOX)) in patients with the diagnosis of pneumonia in the emergency department. …”
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  6. 1626

    Recent Achievement in Gene Cloning and Functional Genomics in Soybean by Zhengjun Xia, Hong Zhai, Shixiang Lü, Hongyan Wu, Yupeng Zhang

    Published 2013-01-01
    “…Soybean is a model plant for photoperiodism as well as for symbiotic nitrogen fixation. However, a rather low efficiency in soybean transformation hampers functional analysis of genes isolated from soybean. …”
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  7. 1627

    A multi-spectral and hyperspectral image dataset for evaluating chemical traits and the water status of avocado, olive and grape through leaf dehydration under laboratory condition... by Juan Sebastian Estrada, Rodrigo Demarco, Ciarán Miceal Johnson, Matias Zañartu, Andres Fuentes, Fernando Auat Cheein

    Published 2025-01-01
    “…This work presents a dataset composed of multi-spectral images, hyper-spectral reflectance values, and measurements of weight, chlorophyll, and nitrogen content of leaves at five different drying stages, from avocado, olive, and grape trees, which are common crops in the Valparaíso region of Chile. …”
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  8. 1628

    Fabrication of Au-doped mesoporous TiO2 supported on g-C3N4 as an efficient light-assisted catalyst for oxidative desulfurization of model fuels with different sulfur content by Behzad Moeinifard, Alireza Najafi Chermahini

    Published 2025-02-01
    “…The Au-m-TiO2/g-C3N4 photocatalyst was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV–Vis diffusive reflectance spectra (UV–Vis DRS), high-resolution transmission electron microscopy (HR-TEM), Fourier transform infrared spectra (FT-IR), and nitrogen adsorption measurements. The removal efficiency of DBT was 98.7% under the optimized reaction conditions and under visible-light irradiation (λ > 400 nm).…”
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  9. 1629

    A review of metal catalysts for lithium-sulfur battery applications by Shuai Li

    Published 2025-01-01
    “…Metal compound catalysts refer to catalysts composed of compounds formed by metals and other elements (such as oxygen, nitrogen, sulfur, etc.), including metal oxides, metal nitrides, metal sulfides, etc. …”
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  10. 1630

    Synthesis and Properties of Anion Exchangers Derived from Chloromethyl Styrene Codivinylbenzene and Their Use in Water Treatment by Hesham A. Ezzeldin, Allen Apblett, Gary L. Foutch

    Published 2010-01-01
    “…These resulting ion-exchange polymers were characterized by a variety of techniques such as analytical titrations, nitrogen analysis, Fourier transform infrared spectroscopy and thermal gravimetric analysis. …”
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  11. 1631

    Effect of Surfactants on Gas Holdup in Shear-Thinning Fluids by Shaobai Li, Siyuan Huang, Jungeng Fan

    Published 2017-01-01
    “…Carboxylmethyl cellulose (CMC) solutions of 0.2 wt%, 0.6 wt%, and 1.0 wt% with sodium dodecyl sulfate (SDS) as the surfactant were used as the power-law (liquid phase), and nitrogen was used as the gas phase. Effects of SDS concentration, rheological behavior, and physical properties of the liquid phase and superficial gas velocity on gas holdup were investigated. …”
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  12. 1632

    An Investigation on Water Quality of Darlik Dam Drinking Water using Satellite Images by Erhan Alparslan, H. Gonca Coskun, Ugur Alganci

    Published 2010-01-01
    “…Next, an investigation was made by multiple regression analysis between the unitless planetary reflectance values of the first four bands of the June 2005 Landsat TM image of the dam and WQ parameters, such as chlorophyll-a, total dissolved matter, turbidity, total phosphorous, and total nitrogen, measured at satellite image acquisition time at seven stations in the dam. …”
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  13. 1633

    Selective and Accurate Determination Method of Propofol in Human Plasma by Mixed-Mode Cation Exchange Cartridge and GC-MS by Jae Sung Pyo

    Published 2016-01-01
    “…Propofol standard was quantified to evaluate possible loss due to the concentration processes, nitrogen gas and centrifugal vacuum. These two concentration processes resulted in notable decrease in the quantity of propofol, signifying avoiding any concentration processes during propofol quantification. …”
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  14. 1634

    Reduction of Fuel Consumption and Exhaust Pollutant Using Intelligent Transport Systems by Mostofa Kamal Nasir, Rafidah Md Noor, M. A. Kalam, B. M. Masum

    Published 2014-01-01
    “…Automobile emits a massive amount of pollutants such as Carbon Monoxide (CO), hydrocarbons (HC), carbon dioxide (CO2), particulate matter (PM), and oxides of nitrogen (NOx). Intelligent transport system (ITS) technologies can be implemented to lower pollutant emissions and reduction of fuel consumption. …”
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  15. 1635

    Synthesis and Characterization of a Magnetic Molecularly Imprinted Polymer by Suspension Polymerization for Selective Recognition of Dibenzothiophene from Gasoline Samples by Wanzhen Xu, Hui Li, Xiaoni Ni, Ningwei Wang, Yongsheng Yan, Chunxiang Li

    Published 2015-11-01
    “…The morphology, magnetic and adsorption properties of MMIP were characterized by Fourier transmission infrared spectrometry, scanning electron microscopy, magnetic measurements, thermogravimetric analysis and nitrogen adsorption. Isothermal absorption of DBT, kinetics of absorption and adsorption selectivity on MMIP were then evaluated. …”
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  16. 1636

    Summary and Analysis of Pollutant Emission and Anti-pollution Measures at Onshore Oil and Gas Terminals in the Pearl River Basin by CAO Baojiu, LI Guancheng, SHENG Wenlong, HOU Minchi, WANG Qiabin, LIU Qin

    Published 2023-01-01
    “…With the continuous exploitation of marine oil and gas resources in China,onshore oil and gas terminals are increasingly important as a processing and transportation hub for oil and gas exploitation.Three onshore terminals have been built in the Pearl River Basin so far.This paper analyzes the production process,pollutant emission and its environmental impact,and anti-pollution measures of onshore terminals in the Pearl River Basin,and then summarizes the environmental protection experience of onshore terminals.The results show that the main pollutants of onshore terminals are boiler exhaust and industrial wastewater,and the pollutant emission is moderate in quantity.Utilizing self-produced natural gas as the fuel for terminal heating and power generation systems can decrease the concentration of pollutants in the boiler exhaust with a milder impact on the environment.Nonetheless,it is still required to monitor the sulfur content of natural gas and adopt the low nitrogen combustion technology to decrease the oxynitride emission.For natural gas terminals with low sewage output,sewage can be reused after advanced treatment to accomplish zero sewage emission.For crude oil terminals with high sewage output,it is recommended to conduct multi-stage oil removal and then biological treatment to meet the emission standards.…”
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  17. 1637

    Optimising sunflower yields: insights from meta-analysis on fertilisation impact and planting strategies for enhanced crop productivity in China by Shun Li, Zongqing Liu

    Published 2025-01-01
    “…Utilising 41 studies and 392 pairs of observations based on four criteria, we found an overall 27% increase in sunflower yield with fertiliser application. Nitrogen (N), phosphorus (P), and potassium (K) individually applied raised yield by 23.37, 20.92, and 11.63%, respectively. …”
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  18. 1638

    DA AMOSTRAGEM À PURIFICAÇÃO: METODOLOGIAS E TÉCNICAS PARA AVALIAÇÃO DE SILOXANOS NO BIOGÁS by Carla M. B. Gomes, Cleuciane T. do Nascimento, Rodolfo A. Schaffner, Guilherme E. Q. Souza, Alessandra Freddo, Daiana G. Martinez, Helton J. Alves

    Published 2025-02-01
    “…Primarily composed by methane and carbon dioxide, biogas can also contain nitrogen, water vapor, oxygen, hydrogen sulfide, ammonia, hydrocarbons and siloxanes. …”
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  19. 1639

    Microwave-assisted synthesis and catalytic activity of nano-sized molybdenum carbide in naphthalene hydrogenation by Artur Aghoyan, Argam V. Akopyan, Gurgen Aleksanyan, Davit Davtyan

    Published 2025-02-01
    “…The catalysts were characterized by XRD, nitrogen adsorption-desorption, SEM, TEM, XPS, and NH3-TPD. …”
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  20. 1640

    EVALUATION OF WATER POLLUTION STATUS IN BAHLUI RIVER (IASI TOWN AREA) DUE TO DOMESTIC AND URBAN WASTEWATER TREATMENT ACTIVITIES by CARMEN ZAHARIA

    Published 2015-12-01
    “… This study presents some data about the water pollution status of Bahlui river in Iasi town area (two control sections) mainly due to domestic and urban wastewater treatment activities, considering especially some quality indicators (i.e. nitrogen-based nutrients, total phosphorus and sum organics content) evaluated for 2009-2010. …”
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