Results 101 to 110 of about 388,475 (351)
Photoreductive Dissolution of Iron Oxides Trapped in Ice and Its Environmental Implications [PDF]
, 2010 The availability of iron has been thought to be a main limiting factor for the productivity of phytoplankton and related with the uptake of atmospheric CO_2 and algal blooms in fresh and sea waters. In this work, the formation of bioavailable iron (Fe(II)
Choi, Wonyong +4 more
core +1 more source
Selenium Oxyanion Uptake on Iron Oxides and Pyroaurites: Probing Mechanisms Using 18O Tracing [PDF]
, 2020 Philip Larese‐Casanova +7 more
openalex +1 more source
Iron Uptake Mechanisms of Pathogenic Bacteria.
Nippon Saikingaku Zasshi, 1996 鉄 (イオン) はほとんどの生物の生存と増殖に不可欠な元素である。しかし, 宿主生体における鉄は大部分が結合型やヘム鉄として存在し, 細菌が自由に利用できる遊離鉄は極めて少ない。これは有害な活性酸素の生成防止と共に細菌感染症に対する非特異的生体防御機構の一つとなっている。それ故, 宿主生体中で増殖し得る病原菌は何らかの巧妙な鉄獲得系を保持している筈である。鉄欠乏下に発現する2つの鉄獲得系が明かにされている: 1) Fe3+に高親和性の輸送キレート剤, シデロフォア (siderophore, siderochrome とも呼ばれる) を産生し, トランスフェリンやラクトフェリンに結合している鉄を奪い取り, そのコンプレックスに特異的なレセプターを介して鉄を取り込む系; 2) トランスフェリン ...
S, Yamamoto, S, Shinoda
openaire +3 more sources
Advanced Engineering Materials, EarlyView.This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert +7 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Microstructural evolution and hardness optimization along the cross‐section of friction stir welded AA6061/AlSi10MgMn joints, for electric vehicle battery housings, were investigated. Postweld aging between 170°C and 220°C enhances hardness uniformity within the nugget zone.
Emanuele Ghio, Emanuela Cerri
wiley +1 more source
Advanced Engineering Materials, EarlyView.Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel +6 more
wiley +1 more source
PLoS ONE, 2014 Bacterial pathogens require multiple iron-specific acquisition systems for survival within the iron-limiting environment of the host. Francisella tularensis is a virulent intracellular pathogen that can replicate in multiple cell-types.
Natalie Marie Pérez +1 more
doaj +1 more source
Studies on plants that hyperaccumulate copper, cobalt and nickel : their potential for use in phytomining and phytoremediation : a thesis presented in partial fulfillment of the requirements for the degree of Masterate of Science in Soil Science at Massey University [PDF]
, 1998 This thesis reviews three lines of research on hyperaccumulators to examine their potential for phytoremediation and phytomining. The first line of research was to test the affect of nutrient addition on biomass and nickel uptake by two nickel ...
Bennett, Frances Anneli
core
Advanced Engineering Materials, EarlyView.In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart +3 more
wiley +1 more source
PLoS Pathogens, 2018 Iron is essential for many cellular processes, but can generate highly toxic hydroxyl radicals in the presence of oxygen. Therefore, intracellular iron accumulation must be tightly regulated, by balancing uptake with storage or export.
Maria Fernanda Laranjeira-Silva +7 more
doaj +1 more source