19 research outputs found

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    Conan Doyle's best books : in three volumes : illustrated : A study in scarlet and other stories.

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    Forms part of the Core Materials of the C. Frederick Kittle Collection of Doyleana at the Newberry Library.Contemporary blind-stamped dark gray cloth binding; Steele's portrait of Sherlock Holmes smoking a pipe, stamped in black and gold, and signed [by engraver?] "DD", in center of upper board.Vol. I, "A study in scarlet and other stories", has frontispiece photographic portrait of Conan Doyle, inscribed "Yours as of yore, Arthur Conan Doyle." Vols. II and III, "The sign of the four and other stories", and "The White Company. Beyond the city", respectively, contain black and orange frontispiece illustrations of Sherlock Holmes by Frederic Dorr Steele, one of which is dated 1903.Dummy contains frontispieces and title pages in orange and black from each v.; a list of stories contained in the three volumes; and excerpts from two works: p. 137-160 of "A study in scarlet"; and p. 49-72 of "The sign of the four."Publisher's dummy issued for the Sherlock Holmes ed. of "Conan Doyle's best books", a collection of 24 stories published as a 3 v. set by P.F. Collier & Son around 1904. Included in v. 1 of the set was an introduction by Dr. Harold Emery Jones, "The original of Sherlock Holmes."Mode of access: Internet.C. Frederick Kittle, M.D.

    Citation analysis of scientific categories

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    Databases catalogue the corpus of research literature into scientific categories and report classes of bibliometric data such as the number of citations to articles, the number of authors, journals, funding agencies, institutes, references, etc. The number of articles and citations in a category are gauges of productivity and scientific impact but a quantitative basis to compare researchers between categories is limited. Here, we compile a list of bibliometric indicators for 236 science categories and citation rates of the 500 most cited articles of each category. The number of citations per paper vary by several orders of magnitude and are highest in multidisciplinary sciences, general internal medicine, and biochemistry and lowest in literature, poetry, and dance. A regression model demonstrates that citation rates to the top articles in each category increase with the square root of the number of articles in a category and decrease proportionately with the age of the references: articles in categories that cite recent research are also cited more frequently. The citation rate correlates positively with the number of funding agencies that finance the research. The category h-index correlates with the average number of cites to the top 500 ranked articles of each category (R2=0.997). Furthermore, only a few journals publish the top 500 cited articles in each category: four journals publish 60% (σ=±20%) of these and ten publish 81% (σ=±15%)

    L-α-Glycerophosphocholine Contributes to Meat's Enhancement of Nonheme Iron Absorption

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    In this research, our aim was to isolate and characterize the substance known as “meat factor,” which is reported to enhance nonheme iron absorption. We used various analytical techniques, and the final step was a human study to measure the effect of a candidate compound on iron absorption. Lean beef was selected for study, as it is known to increase nonheme iron absorption. Cooked ground beef was homogenized and aliquots were taken through a simulated gastric and intestinal digestion. This was followed by purification using fast protein liquid chromatography. The fractions were collected and applied to a Caco-2 cell system designed to measure iron absorption using radioiron. Fractions with an enhancing effect were analyzed by mass spectrometry, nuclear magnetic resonance, and HPLC, and a proposed empirical formula was obtained for the substance in the most active fraction (C8H20 NO6P). Tandem mass spectrometry was used to identify the compound as L-α-glycerophosphocholine (L-α) by comparing the spectra against authentic material. We added a commercially available food grade source of L-α to vegetarian lasagna, with and without 100 mg ascorbic acid (a known enhancer of nonheme iron absorption), at the same enhancer:iron molar ratio (2:1), and fed meals to 13 women of child-bearing age with low iron stores. The nonheme iron was labeled with stable isotopes of iron to provide a total dose per meal of 10 mg iron, and absorption was measured from erythrocyte incorporation. Nonheme iron absorption from lasagna was increased by the addition of either ascorbic acid (P = 0.010) or L-α (P = 0.023). We have identified L-α as a component of muscle tissue that enhances nonheme iron absorption, and this finding provides new opportunities for iron fortification of foods
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