Showing 281 - 300 results of 2,510 for search '"Atom"', query time: 0.05s Refine Results
  1. 281

    Determination of Trace Amounts of Palladium in Water Samples by Graphite Furnace Atomic Absorption Spectrometry after Dispersive Liquid-Liquid Microextraction by Mohammad Reza Jamali, Yaghoub Assadi, Reyhaneh Rahnama Kozani

    Published 2013-01-01
    “…A simple, rapid, and powerful microextraction technique was used for determination of palladium (II) ion in water samples using dispersive liquid-liquid microextraction (DLLME) followed by graphite furnace atomic absorption spectrometry (GF AAS). The different variables affecting the complexation and extraction conditions such as extraction and disperser solvent type, extraction time, pH, and concentration of chelating agent were optimized. …”
    Get full text
    Article
  2. 282

    Inhibition of Anti-Reflection Film Cracks on Plastic Substrates Using Nanolaminate Layer Deposition in Plasma-Enhanced Atomic Layer Deposition by Chi-Chieh Wang, Cheng-Fu Wang, Meng-Chi Li, Li-Chen Su, Chien-Cheng Kuo

    Published 2024-12-01
    “…This study used plasma-enhanced atomic layer deposition (PEALD) to find the relationship between the intensity of XRD reflection peak and the root-mean-square surface roughness (σ<sub>RMS</sub>) of hafnium dioxide (HfO<sub>2</sub>) at different thicknesses by reducing the plasma power at different process temperatures. …”
    Get full text
    Article
  3. 283

    Dynamic tuning of terahertz atomic lattice vibration via cross-scale mode coupling to nanomechanical resonance in WSe2 membranes by Bo Xu, Zejuan Zhang, Jiaze Qin, Jiaqi Wu, Luming Wang, Jiankai Zhu, Chenyin Jiao, Wanli Zhang, Juan Xia, Zenghui Wang

    Published 2025-01-01
    “…Here, we demonstrate dynamic coupling between atomic lattice vibration and nanomechanical resonances in few-layer WSe2 NEMS. …”
    Get full text
    Article
  4. 284
  5. 285

    Comparison of Resin Infiltrant and Sealants on Pre-Cavitated Lesions in Primary Teeth: A Quantitative Analysis Using Atomic Absorption Spectrophotometry by Shailaben Chaudhary, Shobha Fernandes, Hardikkumar B. Patel, Priya Mishra, Nishan R. Patel, Yash Bafna, Miral Mehta

    Published 2024-12-01
    “…Aim: This study was conducted to analyze the effects of sealants and resin infiltrant on pre-cavitated lesions in primary teeth (AAS) using an atomic absorption spectrophotometer. Material and Method: Forty freshly extracted intact human primary molars were used for the study. …”
    Get full text
    Article
  6. 286
  7. 287

    Determination of the Levels of Selected Essential Metals in Sycamore (Ficus sycomorus L) Fruit and Seed Using Flame Atomic Absorption Spectrophotometry by Dessie Ashagrie Tafere, Minbale Admas Teshager

    Published 2023-01-01
    “…The concentration of macro (K, Ca, and Mg) and micro essential elements (Fe, Mn, Zn, and Cu) metals in sycamore fruit and seed samples was determined by using a flame atomic absorption spectrophotometer (F AAS). The wet digestion procedure was evaluated using the standard addition (spiking) method, and an acceptable percentage recovery was obtained in the range of 81–119 and 80–118 for the metals in fruit and seed samples, respectively. 0.5 g of oven-dried samples was digested using 10 mL of conc. …”
    Get full text
    Article
  8. 288

    A Green Preconcentration Method for Determination of Cobalt and Lead in Fresh Surface and Waste Water Samples Prior to Flame Atomic Absorption Spectrometry by Naeemullah, Tasneem Gul Kazi, Faheem Shah, Hassan Imran Afridi, Sumaira Khan, Sadaf Sadia Arian, Kapil Dev Brahman

    Published 2012-01-01
    “…After phase separation, based on the cloud point, the surfactant-rich phase was diluted with acidic ethanol prior to its analysis by the flame atomic absorption spectrometry (FAAS). The enhancement factors 70 and 50 with detection limits of 0.26 μg L−1 and 0.44 μg L−1 were obtained for Co and Pb, respectively. …”
    Get full text
    Article
  9. 289

    Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Silver after Solid-Phase Extraction with 2-Mercaptobenzothiazole Immobilized on Microcrystalline Naphthalene by Farid Shakerian, Ali Mohammad Haji Shabani, Shayessteh Dadfarnia, Mahdieh Shabani

    Published 2013-01-01
    “…A simple and sensitive solid-phase extraction (SPE) procedure combined with flame atomic absorption spectrometry (FAAS) was designed for the extraction and determination of trace amounts of silver. …”
    Get full text
    Article
  10. 290
  11. 291

    Suppressing Jahn-Teller distortion of MnO2 via B-Ni dual single-atoms integration for methane catalytic combustion by Huayu Gu, Fanyu Wang, Sai Chen, Jintong Lan, Jun Wang, Chunlei Pei, Xiao Liu, Jinlong Gong

    Published 2025-01-01
    “…Comprehensive analysis discovers that B atoms weaken the interaction between O and Mn atoms by forming bonds with lattice oxygen atoms. …”
    Get full text
    Article
  12. 292
  13. 293
  14. 294
  15. 295

    Ultrasound-Assisted Extraction of Micro- and Macroelements in Fruit Peel Powder Mineral Supplement for Osteoporosis Patients and Their Determination by Flame Atomic Absorption Spectrometry by Muhammad Saleem, Arjumand Iqbal Durani, Rima D. Alharthy, Mahmood Ahmed, Muhammad Imtiaz Shafiq, Abdul Hameed, Syed Mubasher Hussain, Waqas Bashir

    Published 2021-01-01
    “…The aim of this recent research was to quantify the micro- (Mn, Fe, Cu, and Zn) and macroelements (Mg, K, and Ca) in the peel powder of some common fruits (pomegranate, orange, lemon, mango, and grapefruit) by flame atomic absorption spectrometer (FAAS). The extraction of micro- and macroelements in peel powder was done by using dilute acids in an ultrasonic bath. …”
    Get full text
    Article
  16. 296

    Synthesis of Well-Defined Three-Arm Star-Branched Polystyrene through Arm-First Coupling Approach by Atom Transfer Radical Polymerization by Syed Shahabuddin, Fatem Hamime Ismail, Sharifah Mohamad, Norazilawati Muhamad Sarih

    Published 2015-01-01
    “…Here we describe a simple route to synthesize three-arm star-branched polystyrene. Atom transfer radical polymerization technique has been utilized to yield branched polystyrene involving Williamson coupling strategy. …”
    Get full text
    Article
  17. 297

    Preparation of Molecularly Imprinted Regenerated Cellulose Composite Membranes by Surface-Initiated Atom Transfer Radical Polymerization Method for Selective Recognition of Lysozyme by Chaoli Wang, Xiaoling Hu, Ping Guan, Danfeng Wu, Longfei Yang, Chunbao Du

    Published 2015-04-01
    “…Novel types of polymeric membranes containing molecular recognition sites for selective recognition of lysozyme (Lyz) have been prepared using a surface-initiated atom transfer radical polymerization approach. The surface compositions of the regenerated cellulose (RC) membranes before and after polymerization were characterized by X-ray photoelectron spectroscopy analysis, which demonstrated that the molecular imprinting layer was successfully fabricated onto the surface of RC membranes. …”
    Get full text
    Article
  18. 298
  19. 299

    Analisis Kandungan Timbal Pada Gorengan yang Dijual Sekitar Pasar Ulakan Tapakis Padang Pariaman Secara Spektrofotometri Serapan Atom by Angga Putra Perdana, Elmatris Sy, Eti Yerizel

    Published 2018-02-01
    “…Instrumen yang digunakan dalam penelitian ini adalah test kit timbal dan spektrofotmetri serapan atom. Hasil penelitian menunjukan bahwa dari 21 sampel uji didapatkan semua sampel (100%) mengandung timbal namun masih berada dibawah ambang batas yang telah ditetapkan oleh Kepala BPOM RI Nomor HK.00.06.1.52.4011 tahun 2009. …”
    Get full text
    Article
  20. 300