Showing 8,521 - 8,540 results of 11,088 for search '"chemical"', query time: 0.13s Refine Results
  1. 8521

    Characteristics of Water Pollution and Evaluation of Water Quality in Subsidence Water Bodies in Huainan Coal Mining Areas, China by Xinyue Deng, Guangzhou Chen

    Published 2022-01-01
    “…Single-factor evaluation, comprehensive pollution index, the universal exponential formula of logarithmic power function, and membership degree method were used to evaluate the five important water quality indicators, namely total nitrogen, ammonia nitrogen, total phosphorus, dissolved oxygen, and chemical oxygen demand. The results showed that the total nitrogen pollution in the study area was more serious, most of the sites exceed class V standards of the surface water, S14 and S16 were heavily polluted. …”
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  2. 8522
  3. 8523
  4. 8524

    Peculiarities of identification and customs commodity examination of children’s goods by H. V. Tyshchenko, R. V. Kravchenko

    Published 2024-06-01
    “…State-of-the-art research methods, in particular, visual inspection, functional tests, measurement of geometric parameters, mechanical tests, chemical analysis of materials, technical expertise, safety tests, computer modeling and analysis, electrical and electronic tests, expert evaluation are used to establish indicators. quality and safety of goods and obtaining objective information. …”
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    Article
  5. 8525

    Comparing Circadian Dynamics in Primary Derived Stem Cells from Different Sources of Human Adult Tissue by Eve H. Rogers, Sandra A. Fawcett, Vanja Pekovic-Vaughan, John A. Hunt

    Published 2017-01-01
    “…The more primitive dental pulp-derived stem cells did not respond as well to the chemical synchronisation but showed temporal clock gene oscillations following rhythmic mechanical stretch, suggesting that incorporating temporal circadian information of different human adult stem cells will have profound implications in optimising tissue engineering approaches and stem cell therapies.…”
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    Article
  6. 8526

    Development and In Vitro Characterization of Hyaluronic Acid-Based Coatings for Implant-Associated Local Drug Delivery Systems by Svea Petersen, Sebastian Kaule, Michael Teske, Ingo Minrath, Klaus-Peter Schmitz, Katrin Sternberg

    Published 2013-01-01
    “…In this context, we investigated several plasma- and wet-chemical methods for the deposition of HA-based coatings with LDD function on polyamide 12 as a model implant surface, conventionally used for DCB. …”
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    Article
  7. 8527

    Evaluation of Polyethylene-Based Long Lasting Treated Bed Net Netprotect on Anopheles Mosquitoes, Malaria Incidence, and Net Longivity in Western Kenya by M. T. O. Odhiambo, O. Skovmand, J. M. Vulule, E. D. Kokwaro

    Published 2013-01-01
    “…We studied the effect on malaria incidence, mosquito abundance, net efficacy, net use rate, chemical analysis, and holes of a long lasting insecticide treated bed net (Netprotect) in western Kenya, 2007–2010. …”
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    Article
  8. 8528
  9. 8529

    Long-Term Biostability of Pet Vascular Prostheses by Florence Dieval, Foued Khoffi, Riaz Mir, Walid Chaouch, Didier Le Nouen, Nabil Chakfe, Bernard Durand

    Published 2012-01-01
    “…PET Vascular prostheses are susceptible to physical modification and chemical degradation leading sometimes to global deterioration and rupture of the product. …”
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    Article
  10. 8530

    Paleoproterozoic post-orogenic magmatism in southern Finland; geochemical, geochronological and Sr-Nd isotopic constraints on origin and magmatic evolution by Oliver Teräs, Kaisa Nikkilä, Perttu Mikkola, Anna Kotilainen, Olav Eklund, O. Tapani Rämö

    Published 2025-01-01
    “…These rocks have distinctive field, mineralogical, chemical, geochronological and isotopic characteristics compared to the other plutonic rocks in the area. …”
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    Article
  11. 8531
  12. 8532
  13. 8533

    Lake Uluabat Point Pollutant Sources and Pollution Loads by Saadet Hacısalihoğlu, Feza Karaer

    Published 2020-07-01
    “…The monitored parameters were suspended solids (SS), chemical oxygen demand (COD), biological oxygen demand (BOD), ammonium nitrogen (NH4-N), nitrate nitrogen (NO3-N), total nitrogen (TN), phosphate phosphorus (PO4-P) and total phosphorus (TP) parameters. …”
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  14. 8534
  15. 8535

    Investigating the Potential of Using Soya Beans Powder as a Natural Coagulant. by Imalingat, Gabriel

    Published 2023
    “…This is aimed at identifying Soya beans powder as a possible replacement for alum and other chemical coagulants in treating water. Laboratory scale studies using jar test experiments were performed water collected from the sedimentation tank whose source was River Rwizi with detention time of 2 hrs. to determine the effect of varied dosages from 5mg/l to 30mg/l for both soya beans powder and alum on coagulation. …”
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  16. 8536

    Assessment of the Effect of Rosemary on Tomato Preservation. by Nanyanzi,Teopista

    Published 2024
    “…Despite the nutritional and economic importance of tomatoes, significant post-harvest losses persist, exacerbated by concerns over synthetic chemical preservatives' environmental and health impacts. …”
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    Thesis
  17. 8537

    Antibacterial Properties of Phytochemicals Isolated from Leaves of Alstonia boonei and Aerial Parts of Ipomoea cairica. by Gumula, Ivan, Kyarimpa, Christine, Nanyonga, Sarah Kiwanuka, Kwesiga, George, Busulwa, George, Opio, Boniface, Heydenreich, Mathias, Omara, Timothy

    Published 2024
    “…Methods: The plant materials were separately extracted using a dichloromethane/methanol (1:1) solvent system and subjected to repeated chromatographic separation to isolate pure compounds. The chemical structures of the isolated compounds were determined through 1 H NMR, 13C NMR and 2D NMR (COSY, HSQC and HMBC). …”
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  18. 8538

    Investigating the Effect of Wood Charcoal Dust as Partial Replacement for Cement in Plain Concrete. by Akankunda, Lindah

    Published 2024
    “…The slump test results showed a decrease in workability as the WCD content increased, and the compressive strength declined with higher WCD replacement levels. Chemical analysis revealed that WCD contains pozzolanic materials, with a combined SiO₂, Al₂O₃, and Fe₂O₃ content of 20.69%. …”
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  19. 8539

    Determination of Optimum Quantity of Cassava Peel Ash (CPA) as Partial Replacement of Cement for Maximum Concrete Strength and its Cost Analysis. by Nasasira, Johnson

    Published 2024
    “…The cassava peels were sundried and burnt into ash in the furnace at 700-800oc and their chemical and physical properties were studied using the X-ray Fluorescence method which was found to contain elements such as calcium dioxide 85.677%, iron (iii) oxide 5.662%, silicon dioxide 3.517%, potassium oxide 1.731%, aluminum oxide 1.515% manganese(ii) oxide 0.803%, phosphorous pent oxide 0.456%, titanium oxide 0.310%, chromium (ii) oxide 0.143%, and magnesium oxide 0.109%. blended pastes containing OPC and 45 cubes were caster with cassava peel ash (CPA) at different percentage replacement, 0%, 5%, 10%, 15%, and 20% were investigated for consistency, initial and final setting time for the blended paste CPA- OPC pastes and dry density of cubes and compressive strength of grade 25 (C25) Concrete. …”
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  20. 8540

    Comparative Study on the Preservation Efficacy of Rosemary Extracts and Conventional Preservatives on Tomatoes. by Namanya, Jonan

    Published 2025
    “…Traditional preservation methods like synthetic chemical preservatives have been effective but raise health concerns. …”
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    Thesis