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  • Article
    Prajitno H, Kim J, Jeong MH, Choi SA, Hwang SM, Lee H, Jeong SK.
    Chemosphere. 2024 Nov;367:143642.
    The recent development of NH3 as a fuel has led to significant emissions of N2O, a major greenhouse gas. Direct catalytic N2O decomposition (de-N2O) is a promising technology for N2O emissions control because it effectively decomposes N2O at low temperatures without requiring reducing agents or producing other pollutants. In marine applications, to improve the flame properties, NH3 is often mixed with marine diesel oil, which contains sulfur. Although alkali-metal-doped Co-based catalysts show high de-N2O activity at low temperatures, their performance in the presence of SO2 has not been evaluated. In this study, we examined the effects of alkali metals on the Zn0.4Co2.6O4 spinel-structured catalyst for low-temperature de-N2O in the absence and presence of inhibitors (O2, H2O, and SO2). Incorporating alkali metals (Na, K, Rb, and Cs) significantly enhanced the catalytic activity of the Zn0.4Co2.6O4 spinel catalyst. Specifically, adding 1 wt% K reduced the light-off temperature from 271.7 °C to ∼150.0 °C at 60,000 h-1 gas hourly space velocity in the absence of inhibitors. The enhanced electronic properties resulting from the addition of alkali metals led to weakening of Co-O bonds, promoting the regeneration of active sites and thus enhancing catalytic activity. K served as sacrificial sites for sulfur adsorption, delaying deactivation of the 1K-Zn0.4Co2.6O4 spinel catalyst by SO2. The formation of bulk sulfates, surface sulfites, and CoSO4 was responsible for the deactivation by SO2. Mechanisms for the deactivation by SO2 and the promotion of SO2 resistance by K in the Zn0.4Co2.6O4 spinel catalyst are proposed.
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  • Article
    Nyangoh Timoh K, Bader G, Fauconnier A, Barrau V, Delmas V, Touboul C.
    PLoS One. 2015;10(12):e0143642.
    PURPOSE: To map the vascular anatomy of the obturator foramen using fixed anatomic landmarks.
    METHOD: Twenty obturator regions were dissected in 10 fresh female cadavers after vascular blue dye injection in five cadavers (50%). Furthermore, 104 obturator regions were reconstructed by angiotomodensitometry from 52 women under investigation for suspected arterial disease. The anatomy of the obturator region was mapped by measuring the distance of vascular structures from the middle of the two branches of the ischiopubic bone, which were used as fixed landmarks.
    RESULTS: The bifurcation of the obturator artery was at a mean (SD) distance of 30.0 mm (4.5) from the middle of the ischiopubic branch (MISP). The anterior branch of the obturator vessels was 15.2 mm (10.1) from the MISP. The posterior branch of the obturator vessels was 5.5 mm (4.0) and 23.6 mm (8.7) from the middle of the outer edge of the obturator foramen (MOE) and the MISP, respectively. Using 5° and 95° percentiles of these measurements we defined a central avascular triangle.
    CONCLUSIONS: Our data show that, beyond inter-individual variations, a central triangular avascular area can be identified in the obturator foramen between the posterior and anterior obturator artery using fixed landmarks.
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  • Article
    Mao Z, Gu X, Cao Y, Luo J, Zeng Q, Chen H, Jeppesen E.
    Sci Total Environ. 2021 Feb 20;756:143642.
    Across the globe, lake ecosystems are exposed to a variety of human disturbances. A notable example is shallow lakes where human-induced eutrophication or water level fluctuation may result in a switch from a clear-water, macrophyte-dominated state to a turbid, phytoplankton-dominated state. Yet, few investigations have described synchronous changes in biotic assemblage composition and food web framework under such a shift between alternative states. We used stable carbon and nitrogen isotopes to test the extent to which switching from macrophyte to phytoplankton dominance in Lake Gucheng, triggered by a water level increase, would alter ecosystem structure and change the basal resources supporting the food web. We found that invertebrates and fish compensated for a reduction of macrophyte and epiphyte resources by deriving more energy from the alternative pelagic energy channel, where benthic invertebrates act as crucial links between primary producers and higher consumers by transporting δ13C-depleted pelagic algae to the benthic zone. Although consumers can respond to large shifts in energy allocation and stabilize food web dynamics through their ability to feed across multiple energy pathways, our study suggest that energy subsidies may promote trophic cascades and enhance the stability of the turbid regime.
    Digital Access Access Options
  • Book
    Skidmore-Roth, Linda.
    Summary: "Choose the drug handbook trusted by nurses for over 35 years! Mosby's 2024 Nursing Drug Reference makes it easy to find the most vital information on the drugs you administer most frequently. More than 5,000 drugs are profiled -- including more than 25 new entries for drugs recently approved by the FDA. And no other drug guide places a higher emphasis on patient safety, with Black Box Warnings for dangerous adverse reactions, High Alerts for drugs with the greatest risk, and a focus on both common and life-threatening side effects. From nursing pharmacology expert Linda Skidmore-Roth, this perennial bestseller proves there is a difference in drug guides. More than 5,000 generic and trade-name drugs are profiled, covering almost every drug you will administer in practice or in clinicals. Alphabetical organization by generic name provides quick and easy access to specific drugs, with both trade and generic names listed in the index. Bolded coverage of IV drug administration highlights dosage and IV administration instructions, including safety considerations and Y-site, syringe, and additive compatibilities. Nursing Process steps are used as the framework for organizing all nursing care information. Complete pharmacokinetic information is summarized in a table and includes the mechanism and absorption of the drug as well as its action, duration, and excretion. Side effects information is organized by body system and identified as common or life threatening, showing signs to watch for during assessments. High Alert headers highlight drugs that pose the greatest risk if administered improperly. Black Box Warnings provide alerts to FDA warnings of dangerous or life-threatening drug reactions. Overview of drug categories explains the safe administration of common classes of drugs, as well as their common side effects and interactions. [...] NEW! Drug monographs for more than 25 newly released, FDA-approved medications equip you with the latest drug information including generic names, trade names, pronunciations, do-not-confuse drugs, action, uses, contraindications, precautions, dosages and routes, side effects, pharmacokinetics, interactions (including drug/herb, drug/food and drug/lab test), nursing considerations, treatment of overdose, patient/family teaching, and more. NEW! Several online-only drug monographs are added to the Evolve website, creating an overall total of more than 100 Evolve-only drug monographs for lesser-used medications." -- Provided by publisher.

    Contents:
    Individual drug monographs
    Appendixes: A. Selected new drugs
    B. Ophthalmic, nasal, topical, and otic products
    C. Vaccines and toxoids
    D. Recent FDA drug approvals.
    Digital Access ClinicalKey Nursing [2024]