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  • brain
  • Perhaps of more significance is the position of the Society of Nuclear Medicine Brain Imaging Council 6 that SPECT scans cannot detect brain abnormalities produced by chemicals. (aafp.org)
  • Although most tests for Multiple Chemical Sensitivity are inconclusive, it has been shown that by MRI (magnetic resonance imaging) that some with Multiple Chemical sensitivity have brain dysfunction (Heuser, Wojdani & Heuser 1992), which may be relevant to their condition. (multiplechemicalsensitivity.org)
  • although
  • Although this explanation may not fully apply to multiple chemical sensitivity, undoubtedly the discriminating physician must include the impact of psychosocial elements when evaluating these patients. (aafp.org)
  • simply
  • Multiple chemical sensitivity is not simply a medical concern of diagnosis and treatment, but it is becoming a major social and economic issue with a strong activist agenda. (aafp.org)
  • patients
  • During the past five years, we have seen a growing percentage of patients with previously diagnosed multiple chemical sensitivity or a similar diagnosis who had undergone SPECT scans. (aafp.org)
  • computational
  • The conclusion is that the classic single channel model for DPF simulation can for all practical conditions accommodate diffusive phenomena with no added computational cost and without significantly altering the structure of existing code implementations. (sae.org)
  • molecules
  • The unit is defined as the amount or sample of a chemical substance that contains as many constitutive particles, e.g., atoms, molecules, ions, electrons, or photons, as there are atoms in 12 grams of carbon-12 (12C), the isotope of carbon with standard atomic weight 12 by definition. (wikipedia.org)
  • Stereochemistry - study of the relative spatial arrangement of atoms that form the structure of molecules Surface science - study of physical and chemical phenomena that occur at the interface of two phases, including solid-liquid interfaces, solid-gas interfaces, solid-vacuum interfaces, and liquid-gas interfaces. (wikipedia.org)
  • Concepts
  • Furthermore, justifications to the multiple-choice tasks revealed lack of understanding of basic chemical concepts as well as language problems amongst learners as they could not clearly express their reasoning. (unisa.ac.za)
  • This time, the focus will be on ontological interpretation of highly relevant chemical concepts, in particular, the concept of the reactivity of a substance. (testmyprep.com)
  • atoms
  • They showed that chemical compounds do not consist of random clusters of atoms and functional groups, but are relatively stable systems that have an orderly, ie, invariant structure corresponding to the valence of the constituent atoms. (testmyprep.com)
  • The concept of a chemical structure could not be developed without the concept of valence, i.e. the ability of atoms of chemical elements to form a completely definite, and not any number of bonds, with atoms of other elements. (testmyprep.com)
  • atomic
  • These relative atomic masses were based on the stoichiometric proportions of chemical reaction and compounds, a fact that greatly aided their acceptance: It was not necessary for a chemist to subscribe to atomic theory (an unproven hypothesis at the time) to make practical use of the tables. (wikipedia.org)
  • Chemical bonding models are theoretical models used to explain atomic bonding structure, molecular geometry, properties, and reactivity of physical matter. (wikipedia.org)
  • predict
  • The following outline is provided as an overview of and topical guide to natural science: Natural science - a major branch of science that tries to explain, and predict, nature's phenomena based on empirical evidence. (wikipedia.org)
  • diffusion
  • In the present work we derive analytical solutions for the problem of convection, diffusion and chemical reaction in wall-flow monoliths. (sae.org)
  • Konstandopoulos, A. and Kostoglou, M., "Computationally Fast Implementations of Convection, Diffusion and Chemical Reaction Phenomena in Diesel Particulate Filters," SAE Technical Paper 2010-01-0890, 2010, https://doi.org/10.4271/2010-01-0890 . (sae.org)
  • temperature
  • cochrane you stopper kasigi, dynamite i reuse his Chemical Phenomena of Iron Smelting: An Experimental and Practical Examination of the Circumstances Which Determine the Capacity of the Blast Furnace, the Temperature of the Air, and the Proper Condition of the Materials to Be Operated Upon download book chairman. (vishaloberoi.org)
  • This phenomenon arises from a rapid temperature change. (wikipedia.org)
  • representation
  • The results revealed that most Grade 10 learners find it easy to identify pure elements and the solid state but find it difficult to negotiate between the three levels (macroscopic, sub-microscopic and symbolic) of chemical representation of matter. (unisa.ac.za)
  • It is therefore concluded that learners find it difficult negotiating the three levels of chemical representation of matter. (unisa.ac.za)
  • sampling techniques
  • The Fredrickson group has developed rare event sampling techniques for field-based simulations of phenomena including nucleation of ordered block copolymer mesophases and identification of kinetic pathways for defect elimination in directed self-assembly approaches to advanced semiconductor patterning (lithography). (ucsb.edu)
  • systems
  • Students of the Faculty receive in-depth knowledge in geology, economics, engineering mechanics, oil field chemicals and computer systems. (wikipedia.org)
  • implies
  • For example, the chemical equation 2 H2 + O2 → 2 H2O implies that 2 mol dihydrogen (H2) and 1 mol dioxygen (O2) react to form 2 mol water (H2O). (wikipedia.org)
  • show
  • Polyamidoxime (PAO) uranium adsorbents show such phenomena, as recent works articulate that the polymer binds uranium differently than the monomeric constituents. (rsc.org)
  • students
  • The implication of these results for students' cognitive load, and the need for textbook-users to explore alternative resources that depict phenomena in 2D or 3D representations are discussed. (rsc.org)
  • artificial
  • Tonic motion explained these phenomena as blood needed a natural or artificial path to flow when a part of the body is obstructed, injured, or swollen. (wikipedia.org)
  • works
  • Polyamidoxime (PAO) uranium adsorbents show such phenomena, as recent works articulate that the polymer binds uranium differently than the monomeric constituents. (rsc.org)