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https://www.readbyqxmd.com/read/29783178/an-alternative-approach-for-nitrate-and-arsenic-removal-from-wastewater-via-a-nitrate-dependent-ferrous-oxidation-process
#1
Meilin Zhang, Yingfen Li, Xinxian Long, Yunxiao Chong, Guangwei Yu, Zihao He
Owing to the high efficiency of converting nitrate to nitrogen gas with ferrous iron as the electron donor, the process of nitrate-dependent ferrous oxidation (NDFeO) has been considered suitable to treat wastewater that contains nitrate but lacks organic matter. Meanwhile, arsenic immobilization often has been found during the NDFeO reaction. Thus, it was strongly expected that nitrate and arsenic could be removed simultaneously in co-contaminated wastewater through the NDFeO process. However, in the current work, arsenic was not removed during the NDFeO process when the pH was high (above 8), though the nitrate reduction rate was over 90%...
May 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29783177/evaluating-long-term-patterns-of-decreasing-groundwater-discharge-through-a-lake-bottom-permeable-reactive-barrier
#2
Timothy D McCobb, Martin A Briggs, Denis R LeBlanc, Frederick D Day-Lewis, Carole D Johnson
Identifying and quantifying groundwater exchange is critical when considering contaminant fate and transport at the groundwater/surface-water interface. In this paper, areally distributed temperature and point seepage measurements are used to efficiently assess spatial and temporal groundwater discharge patterns through a glacial-kettle lakebed area containing a zero-valent iron permeable reactive barrier (PRB). Concern was that the PRB was becoming less permeable with time owing to biogeochemical processes within the PRB...
May 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29783169/applying-multi-criteria-analysis-for-preliminary-assessment-of-the-properties-of-alginate-immobilized-myriophyllum-spicatum-in-lake-water-samples
#3
Jelena V Milojković, Jelena B Popović-Djordjević, Lato L Pezo, Ilija D Brčeski, Aleksandar Ž Kostić, Vladan D Milošević, Mirjana D Stojanović
The preliminary assessment of the properties of alginate immobilized aquatic weed Myriophyllum spicatum beads-MsAlg in a multi-element system of nine Serbian lakes water samples was done. Herein, the results obtained in the biosorption experiment with MsAlg contents of twenty-two elements analysed by inductively coupled plasma-optical emission spectrometry, biosorption capacity, element removal efficiency, total hardness (TH) and quality index of water (WQI) are presented. Scanning electron microscopy with energy dispersive X-ray spectroscopy was used for the characterization of M...
May 11, 2018: Water Research
https://www.readbyqxmd.com/read/29783045/factors-affecting-gene-expression-and-activity-of-heme-and-manganese-dependent-catalases-in-lactobacillus-casei-strains
#4
Annamaria Ricciardi, Rocco Gerardo Ianniello, Eugenio Parente, Teresa Zotta
Catalases reduce oxidative stress by degrading hydrogen peroxide to molecular oxygen and water. The presence of heme-dependent or manganese-dependent catalases was observed for a long time in lactic acid bacteria (LAB) but, to date, knowledge on the factors affecting gene expression and enzymatic functionality are limited to a very few strains. In this study, the effect of atmosphere of incubation (not aerated static growth vs aerated shaken growth) and supplementation with Fe2+ , hemin, Mn2+ or their combinations on the catalase production of respiration-competent strain Lactobacillus casei N87 was evaluated using a 24 factorial design...
May 8, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29782424/the-profile-of-serum-transferrin-isoforms-in-rheumatoid-arthritis
#5
Monika Gudowska, Ewa Gruszewska, Alicja Wrona, Ewa Gindzienska-Sieskiewicz, Izabela Domyslawska, Karina Lipartowska-Klimuk, Bogdan Cylwik, Stanislaw Sierakowski, Lech Chrostek
INTRODUCTION: Transferrin, a microheterogeneous iron-transporting N-glycoprotein, is an optimal model for the analysis of the glycosylation profile in rheumatoid arthritis. The aim of this study was to assess the transferrin isoforms profile in RA patients at the time of diagnosis and then look into the associations with disease activity. METHODS: Serum samples were collected from 48 patients with rheumatoid arthritis. The patients were males (6) and females (42) (age range: 33-85 years)...
May 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29782390/suspecting-hyperferritinemic-sepsis-in-iron-deficient-population-do-we-need-a-lower-plasma-ferritin-threshold
#6
Swarup Ghosh, Arun K Baranwal, Prateek Bhatia, Karthi Nallasamy
OBJECTIVES: Hyperferritinemia is being suggested to identify patients with sepsis-induced macrophage activation syndrome for early intervention. However, data among iron-deficient children are scarce. This study was planned to explore the biological behavior of plasma ferritin in children from communities with a high frequency of iron deficiency with septic shock and its association with the outcome. DESIGN: Prospective observational study. SETTING: Tertiary care teaching hospital in a low-middle income economy of South Asia...
May 18, 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29782267/-the-role-of-hepcidin-in-formation-of-anemia-of-chronic-disease-and-iron-deficiency-anemia-in-elderly-and-old-patients-with-chronic-heart-failure
#7
N I Solomakhina, E S Nakhodnova, V I Ershov, Y N Belenkov
BACKGROUND: Literature data on hepcidin (H) level - the main regulator of systemic iron homeostasis in patients with chronic heart failure (CHF) - are contradictory. Relationships of H with markers of inflammation elevated level of which is characteristic of CHF are insufficiently studied. The latter problem remains practically unexplored in elderly and very old patients with CHF. AIM: to study the role of H in formation of anemia of chronic disease (ACD) and iron deficiency anemia (IDA) in elderly and very old patients with CHF...
March 2018: Kardiologiia
https://www.readbyqxmd.com/read/29782248/-hepcidin-and-its-relationship-with-inflammation-in-old-and-older-patients-with-anemia-of-chronic-disease-associated-with-chf
#8
N I Solomakhina, E S Nakhodnova, E P Gitel, Y N Belenkov
BACKGROUND: Reported levels of hepcidin, the major regulator of systemic iron homeostasis in CHF patients, are controversial. Relationship of hepcidin with inflammation markers, which are typically increased in CHF, is understudied; this issue is practically unstudied in old and older CHF patients. AIM: To study the role of hepcidin in development of anemia of chronic disease (ACD) and the association of hepcidin with inflammation in old and older CHF patients. MATERIALS AND METHODS: Ninety old and older patients with IHD were evaluated...
2018: Kardiologiia
https://www.readbyqxmd.com/read/29782163/stoichio-kinetic-modeling-of-fenton-chemistry-in-a-meat-mimetic-aqueous-phase-medium
#9
Khaled Oueslati, Aurelie Promeyrat, Philippe Gatellier, Jean-Dominique Daudin, Alain Kondjoyan
Fenton reaction kinetics, which involved an Fe(II)/Fe(III) oxidative redox cycle, were studied in a liquid medium that mimics meat physicochemical conditions. Muscle antioxidants (enzymes, peptides and vitamins) were added one by one in the medium to determine their respective effects on formation of superoxide and hydroxyl radicals. A stoichio-kinetic mathematical model was used to predict the formation of these radicals. The difference between experimental and predicted results was mainly due to iron reactivity, which had to be taken into account in the model, and to uncertainties on some of the rate constant values introduced in the model...
May 21, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29782146/multiscale-interfacial-strategy-to-engineer-mixed-metal-oxide-anodes-towards-an-enhanced-cycling-efficiency
#10
Yue Ma, Cheuk-Wai Tai, Shaowen Li, Kristina Edstrom, Bingqing Wei
Interconnected macro/mesoporous structures of mixed metal oxide (MMO) are developed on nickel foam as free-standing anodes for Li-ion batteries. The sustainable production is realized via a wet chemical etching process with bio-friendly chemicals. By means of the divalent iron doping during an in-situ re-crystallization process, the as-developed MMO anodes exhibit the enhanced levels of cycling efficiency. Furthermore, this atomic-scale modification coherently synergies with the encapsulation layer across a micrometer scale...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29781764/charged-iron-particles-found-in-galactic-cosmic-rays-are-potent-inducers-of-epithelial-ovarian-tumors
#11
Birendra Mishra, Gregory W Lawson, Ryan Ripperdan, Laura Ortiz, Ulrike Luderer
Astronauts traveling in deep space are exposed to high-charge and energy (HZE) particles from galactic cosmic rays. We have previously determined that irradiation of adult female mice with iron HZE particles induces DNA double-strand breaks, oxidative damage and apoptosis in ovarian follicles, causing premature ovarian failure. These effects occur at lower doses than with conventional photon irradiation. Ovarian failure with resultant loss of negative feedback and elevated levels of gonadotropin hormones is thought to play a role in the pathophysiology of ovarian cancer...
May 21, 2018: Radiation Research
https://www.readbyqxmd.com/read/29781404/removal-of-iron-ore-slimes-from-a-highly-turbid-water-by-daf
#12
L M Faustino, A S Braga, G D Sacchi, W Whitaker, M A P Reali, L S Leal Filho, L A Daniel
This paper addresses Dissolved Air Flotation (DAF) process variables, such as the flocculation parameters and the recycle water addition, as well as the pretreatment chemical variables (coagulation conditions), to determine the optimal values for the flotation of iron ore slimes found in a highly turbid water sample from the Gualaxo do Norte River, a tributary of the Doce River Basin in Minas Gerais, Brazil. This work was conducted using a flotatest batch laboratory-scale device to evaluate the effectiveness of DAF for cleaning the water polluted by the Samarco tailings dam leakage and determine the ability of DAF to reduce the water turbidity from 358 NTU to values below 100 NTU, aiming to comply with current legislation...
May 21, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29781399/recovery-of-valuable-metals-from-polymetallic-mine-tailings-by-natural-microbial-consortium
#13
Narine Vardanyan, Garegin Sevoyan, Taron Navasardyan, Arevik Vardanyan
Possibilities for the recovery of non-ferrous and precious metals from Kapan polymetallic mine tailings (Armenia) were studied. The aim of this paper was to study possibilities of bioleaching of samples of concentrated tailings by the natural microbial consortium of drainage water. The extent of extraction of metals from the samples of concentrated tailings by natural microbial consortium reached 41 - 55% and 53 - 73% for copper and zinc, respectively. Metal leaching efficiencies of pure culture L. ferrooxidans Teg were higher namely 47- 93% and 73 - 81% for copper and zinc, respectively...
May 21, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29780819/a-comprehensive-review-of-the-pharmacologic-management-of-uterine-leiomyoma
#14
REVIEW
Terrence D Lewis, Minnie Malik, Joy Britten, Angelo Macapagal San Pablo, William H Catherino
Uterine leiomyomata are the most common benign tumors of the gynecologic tract impacting up to 80% of women by 50 years of age. It is well established that these tumors are the leading cause for hysterectomy with an estimated total financial burden greater than $30 billion per year in the United States. However, for the woman who desires future fertility or is a poor surgical candidate, definitive management with hysterectomy is not an optimal management plan. Typical gynecologic symptoms of leiomyoma include infertility, abnormal uterine bleeding (AUB)/heavy menstrual bleeding (HMB) and/or intermenstrual bleeding (IMB) with resulting iron-deficiency anemia, pelvic pressure and pain, urinary incontinence, and dysmenorrhea...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29780689/relationship-between-health-related-quality-of-life-and-respiratory-health-status-among-coal-based-sponge-iron-plant-workers-in-barjora-india
#15
Mousumi Biswas, Kaushik Chattopadhyay
Background: Many coal-based sponge iron plant workers have poor health-related quality of life in general, and specifically a poor respiratory health status. However, the relationship between their health-related quality of life and respiratory health status is unknown. Aim: This study investigated the relationship between health-related quality of life, measured using the EuroQol-5D (EQ5D), and respiratory health status, measured using the St. George's Respiratory Questionnaire (SGRQ), among coal-based sponge iron plant workers in Barjora, India...
2018: Journal of Public Health
https://www.readbyqxmd.com/read/29780531/iron-catalyzed-urea-synthesis-dehydrogenative-coupling-of-methanol-and-amines
#16
Elizabeth M Lane, Nilay Hazari, Wesley H Bernskoetter
Substituted ureas have numerous applications but their synthesis typically requires the use of highly toxic starting materials. Herein we describe the first base-metal catalyst for the selective synthesis of symmetric ureas via the dehydrogenative coupling of methanol with primary amines. Using a pincer supported iron catalyst, a range of ureas was generated with isolated yields of up to 80% (corresponding to a catalytic turnover of up to 160) and with H2 as the sole byproduct. Mechanistic studies indicate a stepwise pathway beginning with methanol dehydrogenation to give formaldehyde, which is trapped by amine to afford a formamide...
April 28, 2018: Chemical Science
https://www.readbyqxmd.com/read/29780118/a-10-year-follow-up-study-of-a-japanese-family-with-ferroportin-disease-a-mild-iron-overload-with-mild-hyperferritinemia-co-occurring-with-hyperhepcidinemia-may-be-benign
#17
Hisao Hayashi, Motoyoshi Yano, Naohito Urawa, Akane Mizutani, Shima Hamaoka, Jun Araki, Yuji Kojima, Yutaka Naito, Ayako Kato, Yasuaki Tatsumi, Koichi Kato
This is a 10-year follow-up study of a family with ferroportin disease A. The proband, a 59-year-old man showed no noteworthy findings with the exception of an abnormal iron level. The proband's 90-year-old father showed reduced abilities in gait and cognition; however, with the exception of his iron level, his biochemistry results were almost normal. Brain imaging showed age-matched atrophy and iron deposition. In both patients, the serum levels of ferritin and hepcidin25, and liver CT scores declined over a 10-year period...
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29779981/creation-of-a-new-hospital-service-for-iron-therapy
#18
REVIEW
Alessandra Livraghi, Alberto Martinasso, Jerard Seghatchian, Cesare Perotti
Iron deficiency anemia is one of the widespread forms of anemia worldwide with important consequences on public health in general and in the management of the hospital blood supply in particular. In this context we decided to "de novo"organize a new hospital service specifically dedicated to iron therapy to correctly diagnose iron deficiency anemia and support patients with the latest generation of i.v. iron formulation. We describe the organizational and educational solutions we adopted to start the new service...
April 19, 2018: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29779806/iron-absorption-from-beans-with-different-contents-of-iron-evaluated-by-stable-isotopes
#19
Márcia Varella Morandi Junqueira-Franco, José Eduardo Dutra de Oliveira, Marilia Regini Nutti, Helton Santos Pereira, José Luiz Vianna de Carvalho, Steven A Abrams, Camila Fernanda Cunha Brandão, Júlio Sérgio Marchini
BACKGROUND: The introduction of biofortified foods such as beans with higher iron content may be a useful tool in preventing iron deficiency. The biofortification aims to reach the root of the problem of malnutrition, targets the neediest population, uses embedded distribution mechanisms, is scientifically feasible and effective in terms of cost, and complements other ongoing interventions to control micronutrient deficiency. However, to ensure effectiveness, measurement of the absorption of minerals is essential...
June 2018: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29779660/in-vitro-analysis-of-cyanobacterial-nonheme-iron-dependent-aliphatic-halogenases-welo5-and-ambo5
#20
Xinyu Liu
Aliphatic carbon-halogen (C-X) bonds are prevalent in modern pharmaceuticals and bioactive natural products. Three distinct chemical strategies are known in Nature to generate these structural motifs. The first is via the nucleophilic substitution at a prefunctionalized electrophilic carbon center with a halide anion (X- ), known for the S-adenosyl-l-methionine-dependent halogenases. The second is via the electrophilic activation of an alkene or its equivalent by a halenium ion (X+ ) donor, known for the haloperoxidases and flavin-dependent halogenases...
2018: Methods in Enzymology
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