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  1. added 2018-06-09
    Phyto-Evaluation of Cd-Pb Using Tropical Plants in Soil-Leachate Conditions.Chuck Chuan Ng - 2018 - Air, Soil and Water Research 11 (1):1-9.
    Sources of soil contamination can exist in various types of conditions including in the form of semifluids. In this study, 3 different types of tropical plants, Acacia (Acacia mangium Willd), Mucuna (Mucuna bracteata DC. ex Kurz) and Vetiver (Vetiveria zizanioides L. Nash), were tested under different levels of soil-leachate conditions. The relative growth rate, metal tolerance, and phytoassessment of cadmium (Cd) and lead (Pb) accumulation in the roots and shoots were determined using flame atomic absorption spectrometry. Tolerance index, translocation factor, (...)
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  2. added 2018-06-09
    Tolerance Threshold and Phyto-Assessment of Cadmium and Lead in Vetiver Grass, Vetiveria Zizanioides (Linn.) Nash.Chuck Chuan Ng - 2017 - Chiang Mai Journal of Science 44 (4):1367-1378.
    Various types of plant species have been extensively used for heavy metals phyto-remediation without taking into consideration its tolerance threshold. In this study, Vetiver grass, Vetiveria zizanioides (Linn.) Nash was evaluated under five different sets of contaminated spiked cadmium (5Cd, 10Cd, 50Cd, 100Cd and 150Cd mg/kg) and lead (50Pb, 100Pb, 200Pb, 400Pb and 800Pb mg/kg) concentration levels in soil. The growth performance, metal tolerance and phyto-assessment of Cd and Pb in the roots and tillers were assessed using flame atomic absorption (...)
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  3. added 2018-06-09
    Heavy Metals Phyto-Assessment in Commonly Grown Vegetables: Water Spinach (I. Aquatica) and Okra (A. Esculentus).Chuck Chuan Ng - 2016 - Springerplus 1 (5):469.
    The growth response, metal tolerance and phytoaccumulation properties of water spinach (Ipomoea aquatica) and okra (Abelmoschus esculentus) were assessed under different contaminated spiked metals: control, 50 mg Pb/kg soil, 50 mg Zn/kg soil and 50 mg Cu/kg soil. The availability of Pb, Zn and Cu metals in both soil and plants were detected using flame atomic absorption spectrometry. The concentration and accumulation of heavy metals from soil to roots and shoots (edible parts) were evaluated in terms of translocation factor, accumulation (...)
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  4. added 2018-06-09
    Effects of Different Soil Amendments on Mixed Heavy Metals Contamination in Vetiver Grass.Chuck Chuan Ng - 2016 - Bulletin of Environmental Contamination and Toxicology 97:695-701.
    Three different types of low cost soil amendments, namely, EDTA, elemental S and N-fertilizer, were investigated with Vetiver grass, Vetiveria zizanioides (Linn.) Nash growing under highly mixed Cd–Pb contamination conditions. A significant increase (p < 0.05) in Cd and Pb accumulation were recorded in the shoots of all EDTA and N-fertilizer assisted treatments. The accumulation of Cd in 25 mmol EDTA/kg soil and 300 mmol N/kg soil showed relatively higher translocation factor (1.72 and 2.15) and percentage metal efficacy (63.25 % (...)
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  5. added 2018-06-09
    Phyto-Assessment of Soil Heavy Metal Accumulation in Tropical Grasses.N. G. Chuck - 2016 - Journal of Animal and Plant Science 26 (3):686-696.
    Tropical grasses are fast growing and often used for phytoremediation. Three different types of tropical grasses: Vetiver (V. zizanoides), Imperata (I. cylindrical) and Pennisetum (P. purpureum) tested in different growth media of spiked heavy metal contents under the glasshouse environment of RimbaIlmu for 60-day. The growth performance, metals tolerance and phyto-assessment of cadmium (Cd), lead (Pb), zinc (Zn) and copper (Cu) in shoots and roots were assessed using flame atomic absorption spectrometry (FAAS).Tolerance index (TI), translocation factor (TF), biological accumulation coefficient (...)
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  6. added 2018-06-09
    Phyto-Assessment of Soil Heavy Metal Accumulation in Tropical Grasses.Chuck Chuan Ng - 2016 - Journal of Animal and Plant Science 26 (3):686-696.
    Tropical grasses are fast growing and often used for phytoremediation. Three different types of tropical grasses: Vetiver (V. zizanoides), Imperata (I. cylindrical) and Pennisetum (P. purpureum) tested in different growth media of spiked heavy metal contents under the glasshouse environment of RimbaIlmu for 60-day. The growth performance, metals tolerance and phyto-assessment of cadmium (Cd), lead (Pb), zinc (Zn) and copper (Cu) in shoots and roots were assessed using flame atomic absorption spectrometry (FAAS).Tolerance index (TI), translocation factor (TF), biological accumulation coefficient (...)
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  7. added 2018-04-30
    Should the Historical Star-System in Chemical Education Be Replaced? [REVIEW]Joseph Earley - 2017 - Science & Education 26 (7-9):1075-1078.
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  8. added 2018-03-03
    Harvesting the Promise of AOPs: An Assessment and Recommendations.Annamaria Carusi, Mark R. Davies, Giovanni De De Grandis, Beate I. Escher, Geoff Hodges, Kenneth M. Y. Leung, Maurice Wheelan, Catherine Willet & Gerald T. Ankley - 2018 - Science of the Total Environment 628:1542-1556.
    The Adverse Outcome Pathway (AOP) concept is a knowledge assembly and communication tool to facilitate the transparent translation of mechanistic information into outcomes meaningful to the regulatory assessment of chemicals. The AOP framework and associated knowledgebases (KBs) have received significant attention and use in the regulatory toxicology community. However, it is increasingly apparent that the potential stakeholder community for the AOP concept and AOP KBs is broader than scientists and regulators directly involved in chemical safety assessment. In this paper we (...)
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  9. added 2017-11-13
    Configuración de la innovación docente y la aplicación del uso de las TIC en la enseñanza superior.Obdulio Italo Banda Marroquín - manuscript
    Las instituciones de educación superior, a fin de adaptarse a los requerimientos del entorno social, deben de aunar las tecnologías de la información y de la comunicación, en los procesos formativos.
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  10. added 2017-02-04
    Publishers_Save Authors' Time.Khaled Moustafa - 2017 - Science and Engineering Ethics (naa):1-2.
    Scientific journals ask authors to put their manuscripts, at the submission stage, sometimes in a complex style and a specific pagination format that are time consuming while it is unclear yet that the submitted manuscripts will be accepted. In the case of rejections, authors need to submit to another journal most likely with a different style and formatting that require additional work and time. To save authors’ time, publishers should allow authors to submit their manuscripts in any format and to (...)
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  11. added 2016-09-07
    Global Optimization Studies on the 1-D Phase Problem.Jim Marsh, Martin Zwick & Byrne Lovell - 1996 - Int. J. Of General Systems 25 (1):47-59.
    The Genetic Algorithm (GA) and Simulated Annealing (SA), two techniques for global optimization, were applied to a reduced (simplified) form of the phase problem (RPP) in computational crystallography. Results were compared with those of "enhanced pair flipping" (EPF), a more elaborate problem-specific algorithm incorporating local and global searches. Not surprisingly, EPF did better than the GA or SA approaches, but the existence of GA and SA techniques more advanced than those used in this study suggest that these techniques still hold (...)
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  12. added 2016-01-08
    A Sense So Rare: Measuring Olfactory Experiences and Making a Case for a Process Perspective on Sensory Perception.Ann-Sophie Barwich - 2014 - Biological Theory 9 (3):258-268.
    Philosophical discussion about the reality of sensory perceptions has been hijacked by two tendencies. First, talk about perception has been largely centered on vision. Second, the realism question is traditionally approached by attaching objects or material structures to matching contents of sensory perceptions. These tendencies have resulted in an argumentative impasse between realists and anti-realists, discussing the reliability of means by which the supposed causal information transfer from object to perceiver takes place. Concerning the nature of sensory experiences and their (...)
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  13. added 2014-09-17
    Heavy Metals Contamination in Greenhouse Soils and Vegetables in Guanzhong, China.Ling Liu - 2014 - Journal of Encapsulation and Adsorption Sciences 4:80-88.
    This study used a flame atomic absorption spectrometer (FAAS) and atomic fluorescence spec-trophotometer (AFS) to detect the concentrations of chromium (Cr), cadmium (Cd), lead (Pb), hy-drargyrum (Hg) and arsenic (As) in soils and three genotypes of vegetables in greenhouse, as well as analyzed the physical and chemical properties of soils, including soil pH, soil organic matter (OM), basic nutrients, electrical conductivity (EC) and cation exchange capacity (CEC) in Guan- zhong areas, Shaanxi province, China. The results showed that comparing to subsoil, (...)
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  14. added 2012-10-20
    Reducing Chemistry to Physics: Limits, Models, Consequences.Hinne Hettema - 2012 - Createspace.
    Chemistry and physics are two sciences that are hard to connect. Yet there is significant overlap in their aims, methods, and theoretical approaches. In this book, the reduction of chemistry to physics is defended from the viewpoint of a naturalised Nagelian reduction, which is based on a close reading of Nagel's original text. This naturalised notion of reduction is capable of characterising the inter-theory relationships between theories of chemistry and theories of physics. The reconsideration of reduction also leads to a (...)
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