Showing 1,001 - 1,020 results of 1,341 for search '"column"', query time: 0.06s Refine Results
  1. 1001

    Development and Validation of an RP-HPLC Method for CB13 Evaluation in Several PLGA Nanoparticle Systems by J. Álvarez-Fuentes, L. Martín-Banderas, I. Muñoz-Rubio, M. A. Holgado, M. Fernández-Arévalo

    Published 2012-01-01
    “…Separation was achieved in a C18 column using a mobile phase consisting of two solvents: solvent A, consisting of acetonitrile : water : acetic acid (75 : 23.7 : 1.3 v/v), and solvent B, consisting of acetonitrile. …”
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  2. 1002

    Efficient removal of lead (II) from paint factory wastewater using Noug stalk activated carbon: A sustainable adsorption approach by Getasew Yirdaw

    Published 2025-02-01
    “…Further research is necessary to explore how the presence of other heavy metals may affect its performance and to investigate column adsorption techniques and regeneration processes after depletion.…”
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  3. 1003

    Shear properties of jointed dual-pylon of the cable-stayed bridge with separated unequal-width decks under asymmetric load by Chao Luo, Jingzhou Xin, Jiafeng Yang, Yan Jiang, Lei Huang, Jianting Zhou

    Published 2025-01-01
    “…Structural failure occurs when the load reaches 1.82 times the maximum shear stress at the tower column merging section, and the railway beam will experience severe cracking and stiffness degradation, ultimately leading to loss of bearing capacity. …”
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  4. 1004

    Characterization and Properties of Activated Carbon Prepared from Tamarind Seeds by KOH Activation for Fe(III) Adsorption from Aqueous Solution by Sumrit Mopoung, Phansiri Moonsri, Wanwimon Palas, Sataporn Khumpai

    Published 2015-01-01
    “…Fe(III) adsorption was carried out by 30 mL column with 5–20 ppm Fe(III) initial concentrations. …”
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  5. 1005

    Concrete reinforcement using composite fiberglass-based materials by Benzerga Ahmed Lamine, Amieur Mohamed, Rabehi Rachid

    Published 2023-09-01
    “…Additionally, these composite materials can be utilized for column containment as well as shear and bending reinforcement for beams. …”
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    Article
  6. 1006

    Determination of 19 polyphenolic compounds in tea by ultra-high performance liquid chromatography combined with quadrupole-time of flight mass spectrometry by Jian Li, Junmei Ma, Yan Zhang, Lei Zheng

    Published 2022-05-01
    “…Tea samples were extracted by 50% (V/V) ethanol, then separated by Waters Acquity BEH C18 column using a binary solvent system composed of acetonitrile and water (0.1% formic acid) by gradient elution. …”
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  7. 1007

    Isolation and Bioactivity Analysis of Ethyl Acetate Extract from Acer tegmentosum Using In Vitro Assay and On-Line Screening HPLC-ABTS+ System by Kwang Jin Lee, Na-Young Song, You Chang Oh, Won-Kyung Cho, Jin Yeul Ma

    Published 2014-01-01
    “…From the EA extract fraction (1.24 g), five phenolic compounds were isolated by the silica gel, octadecyl silica gel, and Sephadex LH-20 column chromatography. Based on spectroscopic methods such as 1H-NMR, 13C-NMR, and LC/MS the chemical structures of the compounds were confirmed as feniculin (1), avicularin (2), (+)-catechin (3), (−)-epicatechin (4), and 6′-O-galloyl salidroside (5). …”
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  8. 1008

    Facile Synthesis of Propranolol and Novel Derivatives by Vy Anh Tran, Nguyen Hai Tai Tran, Long Giang Bach, Trinh Duy Nguyen, Thi Thuong Nguyen, Tan Tai Nguyen, Thi Anh Nga Nguyen, The Ky Vo, Thu-Thao Thi Vo, Van Thuan Le

    Published 2020-01-01
    “…The isolation and purity of compounds were conducted using column chromatography and thin-layer chromatography. …”
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  9. 1009

    Computer simulation of the soil water regime under an apple orchard in a mountainous area (using the example of the leached chernozem of the experimental agricultural station Gorno... by Svetlana V. Baboshkina, Olga A. Elchininova, Alexander V. Puzanov, Tamara A. Rozhdestvenskaya

    Published 2025-01-01
    “…During hot and dry summer period the moisture deficiency in the soil was noted only in the upper twenty-centimeter soil column (14 mm). The moisture of the lower horizons, where the bulk of tree roots are concentrated, is satisfactory. …”
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  10. 1010

    Carbon dioxide fluxes and the dominant role of vegetation in recently created and reference Gulf Coast marshes by A. Muench, T. Elsey‐Quirk, J. R. White, R. D. DeLaune

    Published 2024-12-01
    “…Wetland loss due to anthropogenic and natural causes reduces the carbon (C) storage capacity and potentially releases previously fixed C in biomass and soil to the water column and atmosphere through decomposition. Coastal wetland restoration has the potential to mitigate some of the C losses depending on the balance of C fluxes. …”
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  11. 1011

    Determination of Curdlan Oligosaccharides with High-Performance Anion Exchange Chromatography with Pulsed Amperometric Detection by Lidong Cao, Huifang Tian, Miaomiao Wu, Hongjun Zhang, Puguo Zhou, Qiliang Huang

    Published 2018-01-01
    “…The optimized assay was performed on a CarboPac-PA100 analytical column (4 mm × 250 mm) using isocratic elution with water−0.2 M sodium hydroxide−0.5 M sodium acetate mixture (50 : 30 : 20, v/v/v) as the mobile phase at a flow rate of 0.8 mL/min. …”
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  12. 1012

    Aerosol Measurements over India: Comparison of MAX-DOAS Measurements with Ground-based (AERONET) and Satellite-based (MODIS) Data by Prithviraj Mali, Mriganka Sekhar Biswas, Steffen Beirle, Thomas Wagner, Shrivardhan Hulswar, Swaleha Inamdar, Anoop S. Mahajan

    Published 2023-11-01
    “…We utilized a profile retrieval algorithm to estimate the vertical profiles and vertical column densities of aerosols (AOD) using MAX-DOAS measurements of the oxygen dimer (O4) at ultraviolet and visible spectral regions. …”
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  13. 1013

    Antimicrobial and antiproliferative activity of biosynthesized manganese nanocomposite with amide derivative originated by endophytic Aspergillus terreus by Nashwa El-Gazzar, Reem Farouk, Nervana S. Diab, Gamal Rabie, Basel Sitohy

    Published 2025-02-01
    “…The most potent isolate was identified utilizing 18S rRNA and was applied to purify and separate their natural antimicrobial products by Flash column chromatography. In addition, the most potent product was identified based on instrumental analysis through Nuclear magnetic resonance (NMR), Fourier-transform infrared (FTIR), and Gas chromatography-mass spectrometry (GC.MS). …”
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  14. 1014

    Aerosol Opto-physical Properties: Temporal Variation, Aerosol Type Discrimination and Source Identification by Amol R. Kolhe, Gajanan Raghunath Aher, Pawan S. Soyam, Sachin D. Ralegankar, Sumita Kedia, Laxman M. Chaudhari, Vivek V. Antad, Sachin D. Ghude, Pramod D. Safai, Sanjay D. Chakane, Panuganti C. S. Devara

    Published 2022-08-01
    “…The AOD500 nm against AE440-870 nm contour density map analysis qualitatively characterizes different aerosol types prevalent in the atmospheric column. The weighted PSCF (WPSCF) analysis for AOD performed on a seasonal basis reveals the presence of possible contribution of long-range transported plumes of varied aerosols on different scales and types from a variety of emission sources from different regions.…”
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  15. 1015

    Separation of Inorganic Forms of Tellurium Using On-Site SPE Followed by ICP-MS or ICP-OES—The Right Solution for Water Monitoring by Katarzyna Kińska, Barbara Żelazko, Olga Gajewska, Magdalena Borowska, Monika Sadowska, Beata Krasnodębska-Ostręga

    Published 2025-01-01
    “…A simple procedure based on solid phase extraction (SPE) with the anionic exchange mechanism (SAX, involving commercially available columns), followed by their quantification with elemental techniques, has a high potential for implementation in routine analysis. …”
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  16. 1016

    Solid-State 13C NMR Spectroscopy Applied to the Study of Carbon Blacks and Carbon Deposits Obtained by Plasma Pyrolysis of Natural Gas by Jair C. C. Freitas, Daniel F. Cipriano, Carlos G. Zucolotto, Alfredo G. Cunha, Francisco G. Emmerich

    Published 2016-01-01
    “…In a typical configuration with a double-chamber reactor, N2 or Ar was injected as plasma working gas in the first chamber and natural gas was injected in the second chamber, inside the arc column. The solid residue was collected at different points throughout the plasma apparatus and analyzed by 13C solid-state NMR spectroscopy, using either cross polarization (CP) or direct polarization (DP), combined with magic angle spinning (MAS). …”
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  17. 1017

    Determination of Natural Capsaicin, Dihydrocapsaicin and Synthetic Capsaicin in Hot Pepper and Its Products by QuEChERS Combined with HPLC by CHENG Luyao, WEN Yajun, SHI Wenting, ZHOU Ziying, MA Liyan

    Published 2025-01-01
    “…An Agilent Eclipse Plus C18 column (150 mm × 4.6 mm, 5 μm) was used for separation, gradient elution was performed with a mobile phase comprising 0.4% phosphoric acid aqueous solution and 90% acetonitrile in water, and a fluorescence detector was used for detection. …”
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  18. 1018

    Evaluation of post-earthquake fractures according to anatomical body parts: A retrospective study by Muhammed Furkan Arpaci, Ferhat Tas, Gokce Bagci Uzun, Mehmet Akcicek, Feyza Inceoglu, Mine Argali Deniz, Emre Demirel, Hidir Pekmez

    Published 2024-04-01
    “…In the region of the most common fragmentary fracture type (48.9%); omos (3%), brachium (1%), thorax (15%), viscerocranium (7%) and neurocranium (3%), in oblique fractures (25.5%); pes (26%), in transverse fractures (20.4%); antebrachi (21%), manus (32%) and vertebral column (4%), in spiral fractures; pelvis (14%), femur (14%) and crus (57%) region. …”
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  19. 1019

    Leakage of Octyl(Phenyl)--Di-Isobutylcarbamoylmethylphosphine Oxide from a Macroporous Silica-Based Chelating Polymeric Adsorption Material and its Recovery by Some Selected Porous... by Anyun Zhang, Yuezhou Wei, Harutaka Hoshi, Mikio Kumagai, Yoshikazu Koma

    Published 2005-11-01
    “…The leakage behaviour of a neutral chelating agent, i.e. octyl(phenyl)- N,N -di-isobutylcarbamoylmethylphosphine oxide (CMPO), from its macroporous silica-based (CMPO/SiO 2 -P) extraction resin (a novel polymeric adsorption material developed in the MAREC process) and the recovery of CMPO by some selected polymer- and silica-based porous adsorbents were investigated by column operation in 0.01 M HNO 3 at 25°C or 50°C. …”
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  20. 1020

    Simple and Selective HPLC-UV/Vis Bioanalytical Method to Determine Aluminum Phthalocyanine Chloride in Skin Permeation Studies by Thaiene Avila Reis, Ana Elise Jaculi, Rubens da Costa Alves, Tais Gratieri, Ricardo Bentes Azevedo, Graziella Anselmo Joanitti, Guilherme Martins Gelfuso, Marcilio Cunha-Filho

    Published 2018-01-01
    “…A HPLC-UV/Vis method was developed using a normal-phase column operating at 30°C, an isocratic mobile phase of methanol : phosphoric acid (0.01 M) at 1.5 mL/min, and detection at 670 nm. …”
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