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https://www.readbyqxmd.com/read/29353188/mechanism-of-anaerobic-bio-reduction-of-azo-dye-assisted-with-lawsone-immobilized-activated-carbon
#1
Daniel Olivo-Alanis, Refugio Bernardo Garcia-Reyes, Luis H Alvarez, Alcione Garcia-Gonzalez
Lawsone redox (LQ) mediator was covalently bound to granular activated carbon (GAC) by Fischer esterification. A high LQ adsorption capacity on GAC was achieved (∼230 mg/g), and desorption studies showed strong chemical stability. Furthermore, kinetic experiments with solid-phase redox mediator (RM) and their controls (soluble RM, GAC and anaerobic sludge) were tested for decolorization of congo red dye at initial concentration of 175 mg/L. Benzidine, a by-product of complete congo red reduction, was also measured by HPLC analysis along the kinetic experiments...
January 9, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29352903/isolation-fine-structure-and-morphology-studies-of-galactomannan-from-endosperm-of-gleditsia-japonica-var-delavayi
#2
Mingzhe Sun, Yumeng Li, Tianxin Wang, Yanwei Sun, Xiyuan Xu, Zesheng Zhang
The water-soluble polysaccharides extracted from endosperm of Gleditsia japonica var. delavayi seeds (EGSP) were identified as galactomannan having the M/G ratio of 2.54-2.66 and a weight average molecular weight (Mw) of 1913 kDa. The molecular structure of EGSP was determined by periodate oxidation, Smith degradation, methylation, FTIR and NMR spectroscopy. The main chain is composed of β-1,4-d-mannopyranose and the branches composed of single α-1-d-galactopyranose. We had also established a model to speculate the fine structure of galactomannan molecules and given preliminary results...
March 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29351859/structural-and-immunological-characterization-of-hydroxyl-radical-modified-human-igg-clinical-correlation-in-rheumatoid-arthritis
#3
Sidra Islam, Abdul Rouf Mir, Mir Yasir Arfat, Farzana Khan, Masihuz Zaman, Asif Ali, Moinuddin
Structural alterations in proteins under oxidative stress have been widely implicated in the immuno-pathology of various disorders. This study has evaluated the extent of damage in the conformational characteristics of IgG by hydroxyl radical (OH) and studied its implications in the immuno-pathology of rheumatoid arthritis (RA). Using various biophysical and biochemical techniques, changes in aromatic microenvironment of the IgG and the protein aggregation became evident after treatment with OH. The SDS-PAGE study confirmed the protein aggregation while far ultraviolet circular dichroism spectroscopy (Far-UV CD) and fourier transform infrared spectroscopy (FTIR) inferred towards the alterations in secondary structure of IgG under OH stress...
January 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29351738/oscillometric-blood-pressure-by-age-and-height-for-non-overweight-children-and-adolescents-in-lubumbashi-democratic-republic-of-congo
#4
Emmanuel Kiyana Muyumba, Dophra Ngoy Nkulu, Clarence Kaut Mukeng, Jacques Mbaz Musung, Placide Kambola Kakoma, Christian Ngama Kakisingi, Oscar Numbi Luboya, Françoise Kaj Malonga, Justin Kalungwe Kizonde, Olivier Mukuku, Weili Yan
BACKGROUND: The diagnosis of hypertension in children is complex because based on normative values by sex, age and height, and these values vary depending on the environment. Available BP references used, because of the absence of local data, do not correspond to our pediatric population. Accordingly, our study aimed to provide the BP threshold for children and adolescents in Lubumbashi (DRC) and to compare them with German (KIGGS study), Polish (OLAF study) and Chinese (CHNS study) references...
January 19, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29351604/evaluation-of-results-based-financing-in-the-republic-of-the-congo-a-comparison-group-pre-post-study
#5
Wu Zeng, Donald S Shepard, Jean de Dieu Rusatira, Aaron P Blaakman, Bernice M Nsitou
Results-based financing (RBF) has been advocated and increasingly scaled up in low- and middle-income countries to increase utilization and quality of key primary care services, thereby reducing maternal and child mortality rates. This pilot RBF study in the Republic of the Congo from 2012 to 2014 used a quasi-experimental research design. The authors conducted pre- and post-household surveys and gathered health facility services data from both intervention and comparison groups. Using a difference-in-differences approach, the study evaluated the impact of RBF on maternal and child health services...
January 16, 2018: Health Policy and Planning
https://www.readbyqxmd.com/read/29351338/stockouts-of-hiv-commodities-in-public-health-facilities-in-kinshasa-barriers-to-end-hiv
#6
Tinne Gils, Claire Bossard, Kristien Verdonck, Philip Owiti, Ilse Casteels, Maria Mashako, Gilles Van Cutsem, Tom Ellman
Stockouts of HIV commodities increase the risk of treatment interruption, antiretroviral resistance, treatment failure, morbidity and mortality. The study objective was to assess the magnitude and duration of stockouts of HIV medicines and diagnostic tests in public facilities in Kinshasa, Democratic Republic of the Congo. This was a cross-sectional survey involving visits to facilities and warehouses in April and May 2015. All zonal warehouses, all public facilities with more than 200 patients on antiretroviral treatment (ART) (high-burden facilities) and a purposive sample of facilities with 200 or fewer patients (low-burden facilities) in Kinshasa were selected...
2018: PloS One
https://www.readbyqxmd.com/read/29351321/methylglyoxal-produces-more-changes-in-biochemical-and-biophysical-properties-of-human-igg-under-high-glucose-compared-to-normal-glucose-level
#7
Mohd Adnan Khan, Zarina Arif, Mohd Asad Khan, Moinuddin, Khursheed Alam
Hyperglycaemia triggers increased production of methylglyoxal which can cause gross modification in proteins' structure vis-a-vis function though advanced glycation end products (AGEs). The AGEs may initiate vascular and nonvascular pathologies. In this study, we have examined the biochemical and biophysical changes in human IgG under normal and high glucose after introducing methylglyoxal into the assay mixture. This non-enzymatic reaction mainly engaged lysine residues as indicated by TNBS results. The UV results showed hyperchromicity in modified-IgG samples while fluorescence data supported AGEs formation during the course of reaction...
2018: PloS One
https://www.readbyqxmd.com/read/29351199/biofilm-forming-potential-of-staphylococcus-aureus-isolated-from-clinical-mastitis-cases-in-new-zealand
#8
Shirli Notcovich, Gina DeNicolo, Steve H Flint, Norman B Williamson, Kristene Gedye, Alex Grinberg, Nicolas Lopez-Villalobos
Biofilm formation is of growing concern in human and animal health. However, it is still unclear how biofilms are related to mastitis infections in dairy cattle. In this study, a comparison between two tests for biofilm formation and the association between biofilm and the presence of genes associated with biofilm formation were investigated for 92 Staphylococcus aureus isolates from clinical mastitis cases. Congo red agar (CRA) and microtitre test assay (MTA) in vitro phenotypic tests were used to evaluate biofilm formation...
January 19, 2018: Veterinary Sciences
https://www.readbyqxmd.com/read/29350136/ecologic-features-of-plague-outbreak-areas-democratic-republic-of-the-congo-2004-2014
#9
Aaron Aruna Abedi, Jean-Christophe Shako, Jean Gaudart, Bertrand Sudre, Benoit Kebela Ilunga, Stomy Karhemere Bi Shamamba, Georges Diatta, Bernard Davoust, Jean-Jacques Muyembe Tamfum, Renaud Piarroux, Martine Piarroux
During 2004-2014, the Democratic Republic of the Congo (DRC) declared 54% of plague cases worldwide. Using national data, we characterized the epidemiology of human plague in DRC for this period. All 4,630 suspected human plague cases and 349 deaths recorded in DRC came from Orientale Province. Pneumonic plague cases (8.8% of total) occurred during 2 major outbreaks in mining camps in the equatorial forest, and some limited outbreaks occurred in the Ituri highlands. Epidemics originated in 5 health zones clustered in Ituri, where sporadic bubonic cases were recorded throughout every year...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29348658/novel-multifunctional-cheese-like-3d-carbon-bn-as-a-highly-efficient-adsorbent-for-water-purification
#10
Zhenya Liu, Yi Fang, Huichao Jia, Chong Wang, Qianqian Song, Lanlan Li, Jing Lin, Yang Huang, Chao Yu, Chengchun Tang
In this paper, a novel three dimensional carbon boron nitride (3D C-BN) was successfully prepared. The obtained material has porous cheese-like structure and pore size ranging from 2 nm to 100 nm. Attractively, the 3D C-BN, which combines the adsorption advantages of BN and carbon together, exhibits excellent adsorption properties for organic dyes, oils and heavy metal ions. The maximum removal capacities of 3D C-BN for methyl blue (MB) and congo red (CR) are 408 mg g-1 and 307 mg g-1, respectively...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29347965/characterization-of-highly-virulent-multidrug-resistant-vibrio-cholerae-isolated-from-a-large-cholera-outbreak-in-ghana
#11
Patrick Kwame Feglo, Miriam Sewurah
OBJECTIVE: The purpose of this study was to investigate the virulent factors of Vibrio cholerae which caused an unprecedented large cholera outbreak in Ghana in 2014 and progressed into 2015, affected 28,975 people with 243 deaths. RESULTS: The V. cholerae isolates were identified to be the classical V. cholerae 01 biotype El Tor, serotype Ogawa, responsible for the large cholera outbreak in Ghana. These El Tor strains bear CtxAB and Tcp virulent genes, making the strains highly virulent...
January 18, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29347953/effect-of-individual-and-community-level-bed-net-usage-on-malaria-prevalence-among-under-fives-in-the-democratic-republic-of-congo
#12
Lauren Levitz, Mark Janko, Kashamuka Mwandagalirwa, Kyaw L Thwai, Joris L Likwela, Antoinette K Tshefu, Michael Emch, Steven R Meshnick
BACKGROUND: Understanding the contribution of community-level long-lasting, insecticidal net (LLIN) coverage to malaria control is critical to planning and assessing intervention campaigns. The Democratic Republic of Congo (DRC), which has one of the highest burdens of malaria cases and deaths and has dramatically scaled up LLIN ownership in recent years thus it is an ideal setting to evaluate the effect of individual versus community-level use to prevent malaria among children under the age of 5...
January 18, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29340397/ligand-modification-of-uio-66-with-an-unusual-visible-light-photocatalytic-behavior-for-rhb-degradation
#13
Xixi Mu, Jifei Jiang, Fufang Chao, Yongbing Lou, Jinxi Chen
A series of isostructural UiO-66-X (X = H, NH2, Br, (OH)2, (SH)2) catalysts have been successfully synthesized by modifying different functional groups on the ligand. The effects of the ligand modification of UiO-66 were investigated for their photocatalytic activity of Rhodamine B degradation under visible light. Surprisingly, UiO-66-NH2 and UiO-66-(OH)2 which have narrow bandgaps and excellent visible light absorption do not show outstanding photocatalytic performances compared to UiO-66 and UiO-66-Br. Electrochemical test results indicated that the conduction band potential of UiO-66-X and the separation efficiency of electrons were quite important in these photocatalytic reactions, other than the electronic effect as reported...
January 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29340314/dnajb9-is-a-specific-immunohistochemical-marker-for-fibrillary-glomerulonephritis
#14
Samih H Nasr, Julie A Vrana, Surendra Dasari, Frank Bridoux, Mary E Fidler, Sihem Kaaki, Nathalie Quellard, Alexia Rinsant, Jean Michel Goujon, Sanjeev Sethi, Fernando C Fervenza, Lynn D Cornell, Samar M Said, Ellen D McPhail, Loren P Herrera Hernandez, Joseph P Grande, Marie C Hogan, John C Lieske, Nelson Leung, Paul J Kurtin, Mariam P Alexander
Introduction: Fibrillary glomerulonephritis (FGN) is a rare disease with unknown pathogenesis and a poor prognosis. Until now, the diagnosis of this disease has required demonstration of glomerular deposition of randomly oriented fibrils by electron microscopy that are Congo red negative and stain with antisera to Igs. We recently discovered a novel proteomic tissue biomarker for FGN, namely, DNAJB9. Methods: In this work, we developed DNAJB9 immunohistochemistry and tested its sensitivity and specificity for the diagnosis of FGN...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29339621/highly-enhanced-adsorption-of-congo-red-by-functionalized-finger-citron-leaf-based-porous-carbon
#15
Gui-Hua Zhao, Yao-Yao Fang, Wei Dai, Na Ma
A novel high-performance porous carbon material, lanthanum(III)-doped finger-citron-leaf-based porous carbon (La/FPC), has been synthesized and used as an adsorbent for anion dye Congo red (CR). The La/FPC was characterized by nitrogen adsorption and desorption isotherms, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The adsorption performance of CR by the FPC and La/FPC composites with different contents of lanthanum(III) were evaluated in fixed-bed breakthrough experiments and batch tests at room temperature (298 K)...
January 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29339118/aerobic-and-anaerobic-cellulose-utilization-by-paenibacillus-sp-caa11-and-enhancement-of-its-cellulolytic-ability-by-expressing-a-heterologous-endoglucanase
#16
Eun Sook Kim, Byeong-Soo Kim, Ki-Yeon Kim, Han-Min Woo, Sun-Mi Lee, Youngsoon Um
For cost-effective lignocellulosic biofuel/chemical production, consolidated bioprocessing (CBP)-enabling microorganisms utilizing cellulose as well as producing biofuel/chemical are required. A novel strain Paenibacillus sp. CAA11 isolated from sediment was found to be not only as a cellulose degrader under both aerobic and strict anaerobic conditions but also as a producer of cellulosic biofuel/chemicals. Paenibacillus sp. CAA11 secreted cellulolytic enzymes by its own secretion system and produced ethanol as well as short-chain organic acids (formic acid, acetic acid, lactic acid) from cellulose...
January 12, 2018: Journal of Biotechnology
https://www.readbyqxmd.com/read/29338352/anti-inflammatory-and-antioxidant-activities-of-rungia-congoensis-a-traditional-vegetable-consumed-by-yombe-people-from-kongo-central-area-dr-congo
#17
Paulin Mutwale Kapepula, Pacha Baku Ngumbi, Michel Kasongo Kawayidiko, Arthur Duki Mpanzu, Thierry Franck, Ange Mouithys-Mickalad, Michel Frédérich, Nadege Ngombe Kabamba, Christophe Masiala Tsobo
Rungia congoensis, a traditional vegetable from Kongo Central area (DR. Congo) was studied for establishing microscopic characters and characterised by chromatographic techniques and their in vitro biochemical activities against ROS production were evaluated in cellular models and on an enzyme, myeloperoxidase (MPO), involved in inflammation. Microscopically leaf can be characterised by non-glandular and glandular trichomes, sinuous anticlinal epidermal cells, diacytic stomata and helical vessels. Methanolic extract displayed high cellular antioxidant activity at the concentrations range of 0...
January 16, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29332551/how-narratives-of-fear-shape-girls-participation-in-community-life-in-two-conflict-affected-populations
#18
Marni Sommer, Miguel Munoz-Laboy, Emily Wilkinson Salamea, Johanna Arp, Kathryn L Falb, Nadine Rudahindwa, Lindsay Stark
Numerous social factors shape girls' lives in conflict-affected settings, affecting their vulnerability to gender-based violence (GBV). Qualitative research methods were used to examine spaces of perceived safety and risk for girls living in two conflict-affected populations: camps in Ethiopia hosting primarily South Sudanese and Sudanese refugees and communities in eastern Democratic Republic of Congo. Three major themes emerged: (a) challenges around caregiver-child communication regarding development, sex, and sexual violence; (b) a typology of safe/risky spaces; and (c) the influence of male-dominated spaces on experiences and fear of GBV...
June 1, 2017: Violence Against Women
https://www.readbyqxmd.com/read/29331784/degradation-of-dyes-by-peroxymonosulfate-activated-by-ternary-cofeni-layered-double-hydroxide-catalytic-performance-mechanism-and-kinetic-modeling
#19
Hanxuan Zeng, Weiqiu Zhang, Lin Deng, Jinming Luo, Shiqing Zhou, Xia Liu, Yong Pei, Zhou Shi, John Crittenden
Ternary CoFeNi-layered double hydroxide (CoFeNi-LDH) was synthesized and initially applied to activate peroxymonosulfate (PMS) for the degradation of Congo red (CR) and Rhodamine B (RhB). The results show that the CoFeNi-LDH/PMS system can efficiently degrade nearly 100% of 20 mg/L CR or 20 mg/L RhB within 6- and 10-min reaction times, respectively. And the catalyst exhibits higher degradation efficiency on CR than on RhB under identical conditions, which is confirmed by electron clouds of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) performed by DFT calculations...
January 4, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29331725/bivo4-n-rgo-nano-composites-as-highly-efficient-visible-active-photocatalyst-for-the-degradation-of-dyes-and-antibiotics-in-eco-system
#20
Brindha Appavu, Sivakumar Thiripuranthagan, Sudhakar Ranganathan, Elangovan Erusappan, Kathiravan Kannan
Herein, we report the synthesis of novel nitrogen doped reduced graphene oxide/ BiVO4 photo catalyst by single step hydrothermal method. The physicochemical properties of the catalysts were characterized using XRD, N2 adsorption-desorption, Raman, XPS, SEM TEM, DRS-UV and EIS techniques. The synthesized catalysts were tested for their catalytic activity in the photo degradation of some harmful textile dyes (methylene blue & congo red) and antibiotics (metronidazole and chloramphenicol) under visible light irradiation...
January 10, 2018: Ecotoxicology and Environmental Safety
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