Showing 2,141 - 2,160 results of 2,195 for search '"Chemist"', query time: 0.09s Refine Results
  1. 2141

    Physiochemical Analysis of River Sutlej, Sindh and the Arabian Sea to Evaluate the Water Quality by Saima Anjum, Afroz Hussain Syeda, Mussarat Jabeen, Ansa Madeeha Zafar, Aqeela Shaheen, Muhammad Arshad

    Published 2023-06-01
    “…A variety of physicochemical parameters were measured in these samples, including pH (7.5 to 8.4), color (variable), odor, turbidity (7 NTU to 18 NTU), taste (salty/bitter), total dissolved solids (182 mg/L to 34768 mg/L), total soluble solids (52 mg/L to 1244 mg/L), EC (109 μS/cm to 51488 μS/cm), total hardness/Ca+2+Mg+2 (25 mg/L to 125 mg/L), total alkalinity or CO3-2, HCO3- (80 mg/L to 172 mg/L), exchangeable ions like Cl- (27 mg/L to 19742 mg/L), F- (0.3 mg/L to 1.29 mg/L), SO4-2 (30 mg/L to 2974 mg/L), PO4-3 (8 mg/L to 35 mg/L), NO2-2 (18 mg/L to 43 mg/L), Mn+2 (0.0002 mg/L to 0.63 mg/L), Cu (0.0005 mg/L to 0.08 mg/L), Cd+2 (0.0005 mg/L to 0.88 mg/L), Cr+3 (0.003 mg/L to 0.32 mg/L), Zn+2 (0.001 mg/L to 2.72 mg/L), Fe+2 (0.01 mg/L to 0.9 mg/L), Ni+2 (0.002 mg/L to 0.23 mg/L), Na+ (15 mg/L to 10157 mg/L), K+ (4.4 mg/L to 379 mg/L), Ca+2 (20 mg/L to 380 mg/L), Mg+2 (5.4 mg/L to 1584 mg/L) tested by standard methods reported in Association of Official Analytical Chemists (AOAC) with little modifications. Most of the parameters studied in these water samples were beyond the National Environment Quality Standard of drinking water guidelines for seawater, but within acceptable limits for rivers. …”
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  2. 2142

    Five undervalued edible species inherent to autumn-winter season: nutritional composition, bioactive constituents and volatiles profile by Tamara Fukalova Fukalova, María Dolores García Martínez, María Dolores Raigón

    Published 2021-11-01
    “…The proximate analysis was carried out by Association of Official Analytical Chemists methods. Total antioxidants were measured as 2.2-diphenyl-1-picrylhydrzyl hydrate (DPPH) and total polyphenols content via the Folin-Ciocalteu procedure. …”
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  3. 2143
  4. 2144

    Metal-Based Optical Probes for Live Cell Imaging of Nitroxyl (HNO) by Rivera Fuentes, Pablo Marcelo, Lippard, Stephen J.

    Published 2017
    “…Selective detection of HNO over NO has been a challenge for chemists, and several fluorogenic molecular probes have been recently developed with that goal in mind. …”
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  5. 2145
  6. 2146

    Electrocatalytic cycling of nicotinamide cofactors by Ralstonia eutropha soluble hydrogenase by Idris, Z

    Published 2012
    “…Dehydrogenases are of interest to chemists as they offer asymmetric catalysis to yield chiral products. …”
    Thesis
  7. 2147

    Molecular carbon allotropes: cyclo[n]carbons by Scriven, LM

    Published 2020
    “…Carbon allotropes built from rings of two-coordinate atoms, known as cyclo[n]carbons, have fascinated chemists for many years, but until now they could not be isolated or structurally characterised, due to their high reactivity. …”
    Thesis
  8. 2148

    Development of Infrared Spectroscopic Techniques for the Determination of Some Quality Parameters of Palm Oil by Moh, Felix Mee Ho

    Published 1998
    “…Conventionally, the analytical techniques used to analyze the quality parameters in palm oil are by wet chemical methods based on the American Oil Chemists' Society (AOCS) procedures which involve titration. …”
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    Thesis
  9. 2149

    Extraction optimization, characterization and evaluation of antioxidant and nutraceutical properties of date palm (Phoenix dactylifera l., variety Ajwa) kernel by Hosni, Suzziyana

    Published 2020
    “…Proximate analyses were done by methods described by Association of Official Analytical Chemists (AOAC) and mineral nutrients were assessed using inductively coupled plasma mass spectrometry (ICP-MS). …”
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    Thesis
  10. 2150

    Evaluation of mineral and near-infrared forecasting of wheat yield varieties using spectrophotometric techniques by H.A. Pardhe, N. Krishnaveni, B.K. Chekraverthy, S. Patel, S. Naveen, V. Rashmi, P.C. Govinden

    Published 2024-01-01
    “…To achieve these objectives, different spectrometric methods were employed to analyze the wheat samples.METHODS: Proximate and mineral quantification were carried out following standard Association of Official Analytical Chemists methods using ultraviolet-visible spectrophotometry, atomic absorption spectrometry, inductive coupled plasma-mass spectroscopy, and prediction was carried out using near-infrared spectra combined with chemometrics.FINDINGS: The samples had moisture content (1.1 - 4.5 percent), protein (18.0 - 22.6 percent), fat (0.3 - 0.6 percent), gluten (6.3 - 10.3 percent), fiber (0.3 - 1.4 percent), alcoholic acidity (0.04 - 0.08 percent), ash (0.9 - 1.7 percent), and carbohydrate (71.1 - 75.2 percent). …”
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  11. 2151

    Profile of stingless bee honey and microbiota produced in West Sumatra, Indonesia, by several species (Apidae, Meliponinae) by Sri Melia, Indri Juliyarsi, Yulianti Fitri Kurnia, Salam N. Aritonang, Rusdimansyah Rusdimansyah, Ade Sukma, Rizki Dwi Setiawan, Yudha Endra Pratama, Doni Supandil

    Published 2024-04-01
    “…The physicochemical properties (Association of Official Analytical Chemists), antioxidant activity (2,2-diphenyl-1-picrylhydrazyl technique), total phenols (Folin- Ciocalteu method), antimicrobial activity (Agar-Well diffusion test), total lactic acid bacteria, and microbiota diversity were measured in stingless bee honey samples. …”
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  12. 2152

    Optimized gating strategy and supporting flow cytometry data for the determination of the Ki-67 proliferation index in the diagnosis of myelodysplastic syndrome by Stefan G.C. Mestrum, Eline M.P. Cremers, Norbert C.J. de Wit, Roosmarie J.M. Drent, Frans C.S. Ramaekers, Anton H.N. Hopman, Math P.G. Leers

    Published 2022-04-01
    “…Therefore, these data are of relevance to internist-hematologists, clinical chemists with sub-specialization of hematology and hemato-oncology oriented researchers.…”
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  13. 2153

    Coexistence of Long-Range Magnetic Order and Magnetic Frustration of a Novel Two-Dimensional <i>S</i> = 1/2 Structure: Na<sub>2</sub>Cu<sub>3</sub>(SeO<sub>3</sub>)<sub>4</sub> by Emily D. Williams, Keith M. Taddei, Kulugammana G. S. Ranmohotti, Narendirakumar Narayanan, Thomas Heitmann, Joseph W. Kolis, Liurukara D. Sanjeewa

    Published 2024-02-01
    “…Among the most important factors influencing the development of quantum materials research is the ability of inorganic and materials chemists to grow high-quality single crystals. Here, the synthesis, structure characterization and magnetic properties of Na<sub>2</sub>Cu<sub>3</sub>(SeO<sub>3</sub>)<sub>4</sub> are reported. …”
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  14. 2154

    Droughts Are Not the Likely Primary Cause for <i>Abies sibirica</i> and <i>Pinus sibirica</i> Forest Dieback in the South Siberian Mountains by Nadezhda M. Tchebakova, Elena I. Parfenova, Elena V. Bazhina, Amber J. Soja, Pavel Ya. Groisman

    Published 2022-08-01
    “…Other causes and mechanisms should be further investigated, which would necessitate creating infrastructure that supports multi-disciplinary, inter-agency teamwork of plant physiologists, foresters, chemists, etc.…”
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  15. 2155
  16. 2156

    Transfer Learning: Making Retrosynthetic Predictions Based on a Small Chemical Reaction Dataset Scale to a New Level by Renren Bai, Chengyun Zhang, Ling Wang, Chuansheng Yao, Jiamin Ge, Hongliang Duan

    Published 2020-05-01
    “…Retrosynthetic analysis is a method employed by chemists to predict synthetic routes to target compounds. …”
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  17. 2157
  18. 2158

    The effect of glycated hemoglobin variability on the development of microvascular complications in patients with type 1 diabetes by L. L. Bolotskaya, Yu. Yu. Golubkina, A. A. Tolkacheva, L. N. Nikankina

    Published 2020-05-01
    “…Determination of HbA1c level is carried out using parameters certified in accordance with the National Standard for Glycohemoglobin Standardization (NGSP) or the International Federation of Clinical Chemists (IFCC). HbA1c variability was determinated by average current HbA1c, average of longitudinal HbA1c (from the manifestation to the last visit – 2019), median and maximum of difference in changes of HbA1c (median and max∆HbA1c). …”
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  19. 2159

    Library of UV-Visible Absorption Spectra of Rare Earth Orthophosphates, <i>Ln</i>PO<sub>4</sub> (<i>Ln</i> = La-Lu, except Pm) by Suchinder K. Sharma, Thomas Behm, Thomas Köhler, Jan Beyer, Richard Gloaguen, Johannes Heitmann

    Published 2020-07-01
    “…The information presented herein is expected to serve as a library of absorption spectra for geologists, physicists, material scientists, and chemists working in the field of rare earths.…”
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  20. 2160

    On the alleged anticancer efficacy of the phosphoethanolamine pill, weakness of scientific evidence and ethical concerns | Sobre a alegada eficácia anti-câncer da pílula de fosfoet... by Francisco José Roma Paumgartten

    Published 2016-08-01
    “…Anecdotal reports say that cancer patients improved after taking “synthetic phosphoethanolamine” (syn-PEA), anticancer pills produced and distributed by chemists from a Brazilian university. Notwithstanding the fact that syn-PEA pill inventors disseminated in the lay press the information that their drug is effective against different types of malignant tumors, they showed no clinical documentation or case reports to corroborate this statement. …”
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