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Cédric Van Goethem, Matthias Mertens, Francisco G Cirujano, Jin W Seo, Dirk De Vos, Ivo F J Vankelecom
Crosslinked PVDF-membranes are demonstrated to offer a viable alternative for centrifugation in the preparation of MOF-particles, thus realising new opportunities at lab-scale and continuous production at large-scale. The membranes combine extreme-pH with solvent stability, thus enabling application in any MOF synthesis, demonstrated here for ZIF-8, ZIF-67, HKUST-1, UiO-66 and MIL-53(Al).
June 18, 2018: Chemical Communications: Chem Comm
Rémy De Mil, Elodie Guillaume, Lydia Guittet, Olivier Dejardin, Véronique Bouvier, Carole Pornet, Véronique Christophe, Annick Notari, Hélène Delattre-Massy, Chantal De Seze, Jérôme Peng, Guy Launoy, Célia Berchi
BACKGROUND: Patient navigation programs to increase colorectal cancer (CRC) screening adherence have become widespread in recent years, especially among deprived populations. OBJECTIVES: To evaluate the cost-effectiveness of the first patient navigation program in France. METHODS: A total of 16,250 participants were randomized to either the usual screening group (n = 8145) or the navigation group (n = 8105). Navigation consisted of personalized support provided by social workers...
June 2018: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
Carlos Grandi, Ligia Nascente, Viviane Cardoso
AntecedentesSe ha observado que el aumento de nacimientos prematuros fue acompañado por una disminución en la mortalidad fetal.ObjetivoEvaluar la relación entre la mortalidad fetal y la prematurez en Argentina.Material y MétodosDiseño ecológico; la población incluyó a todos los nacidos vivos y muertos de Argentina entre 2003 y 2013.Variables Resultado: tasa de mortalidad fetal total (TMFT), tasa de mortalidad fetal por peso, razón de mortalidad fetal, tasa de mortalidad neonatal, tasa de mortalidad perinatal, tendencias de las tasas de mortalidad fetal específicas por edad gestacional (EG), y Prematurez (PP,<37+0 semanas)...
May 8, 2018: Revista de la Facultad de Ciencias Médicas
Siwar Chibani, Michael Badawi, Thierry Loiseau, Christophe Volkringer, Laurent Cantrel, Jean-François Paul
Radioactive gaseous ruthenium tetroxide (RuO4) can be released into the environment in the case of a severe nuclear accident. Using periodic dispersion corrected density functional theory calculations, we have investigated for the first time the adsorption behavior of RuO4 into prototypical porous materials, Metal-Organic Frameworks (MOFs) and zeolites, with the aim of mitigating ruthenium releases to the outside. For the MOFs, we have screened a set of six structures (MIL-53(Al), MIL-120(Al), HKUST-1(Cu), UiO-66(Zr), UiO-67(Zr) and UiO-68(Zr)), while for the zeolites two structures have been selected: mordenite (MOR) with Si/Al ratios of 11 and 5, and faujasite (FAU) with a Si/Al ratio of 2...
June 11, 2018: Physical Chemistry Chemical Physics: PCCP
Ayoub Abdullah Alqadami, Mu Naushad, Z A Alothman, Tansir Ahamad
In the present study, Fe3 O4 @AMCA-MIL-53(Al) nanocomposite was utilized for the adsorptive removal of highly toxic MB and MG dyes from aqueous environment. The batch adsorption tests were performed at different contact time, pH, Fe3 O4 @AMCA-MIL-53(Al) dose, initial concentration of dyes and temperature. The maximum adsorption capacity of MB and MG dyes onto of Fe3 O4 @AMCA-MIL-53(Al) using Langmuir equation was 1.02 and 0.90 m mol/g, respectively. The isotherm and kinetic studies revealed that adsorption data were well fitted to Langmuir isotherm and pseudo-first-order kinetics models...
June 6, 2018: Journal of Environmental Management
Zhiyong Lei, Alain van Mil, Junjie Xiao, Corina H G Metz, Esther C M van Eeuwijk, Pieter A Doevendans, Joost P G Sluijter
To understand and assess the roles of miRNAs, visualization of the expression patterns of specific miRNAs is needed at the cellular level in a wide variety of different tissue types. Although miRNA in situ hybridization techniques have been greatly improved in recent years, they remain difficult to routinely perform due to the complexity of the procedure. In addition, as it is crucial to define which tissues or cells are expressing a particular miRNA in order to elucidate the biological function of the miRNA, incorporation of additional stainings for different cellular markers is necessary...
June 2018: Biotechnology Reports
Myrthe A M van Delft, Marije K Verheul, Leonie E Burgers, Solbritt Rantapää-Dahlqvist, Annette H M van der Helm-van Mil, Tom W J Huizinga, René E M Toes, Leendert A Trouw
Objective: To better understand the contribution of autoantibodies in RA and the biology of their responses, we evaluated the avidity of the anti-carbamylated protein (anti-CarP) antibody response. Methods: The avidity of anti-CarP antibody, ACPA and anti-tetanus toxoid IgG were determined using elution assays. Anti-CarP IgG avidity was measured in sera of 107 RA patients, 15 paired SF and serum samples and 8 serially sampled sera before and after disease onset...
May 28, 2018: Rheumatology
Harina Amer Hamzah, William Gee, Paul Raithby, Simon Teat, Mary Mahon, Andrew David Burrows
The Mannich reaction of the zirconium MOF [Zr6O4(OH)4(bdc-NH2)6] (UiO-66-NH2, bdc-NH2 = 2-amino-1,4-benzenedicarboxylate) with paraformaldehyde and pyrazole, imidazole or 2-mercaptoimidazole led to post-synthetic modification (PSM) through C-N bond formation. The reaction with imidazole (Him) goes to completion whereas those with pyrazole (Hpyz) and 2-mercaptoimidazole (HimSH) give up to 41% and 36% conversion, respectively. The BET surface areas for the Mannich products are reduced from that of UiO-66-NH2, but the compounds show enhanced selectivity for adsorption of CO2 over N2 at 273 K...
May 29, 2018: Chemistry: a European Journal
Øyvind Omland, Harald William Meyer, Helle Lodberg Lauridsen, Jakob Hjort Bønløkke, David Lee Sherson
Asbestosis is interstitial lung fibrosis due to inhalation of asbestos fibres. Up to the ban of import in 1986, 0.7 mil tons had been used in Denmark. The diagnosis of asbestosis is a challenge because of long latency time and very few national occupational asbestos measurements. The cornerstone of exposure assessment is a thorough occupational history, investigation of asbestos content in products used, search for possible and relevant measurements of asbestos fibres in the air, and results of lung biopsies, if present...
May 28, 2018: Ugeskrift for Laeger
Aytekin Ünlü, Soner Yılmaz, Özlem Yalçın, Metin Uyanık, Patrizio Petrone, Rıza Aytaç Çetinkaya, İbrahim Eker, Murat Urkan, Taner Özgürtaş, İsmail Yaşar Avcı, Nazif Zeybek
INTRODUCTION: Hemorrhage is the leading cause of injury related pre-hospital mortality. We investigated worst case scenarios and possible requirements of Turkish Military. As we plan to use blood resources during casualty transport, the impact of transport related mechanical stress on PRBC (packed red blood cell) were analyzed. MATERIAL AND METHODS: The in vitro experiment was performed in the environmental test laboratories of ASELSAN®. Operational vibrations of potential casualty transport mediums such as Sikorsky Helicopters, Kirpi® Armoured Vehicle and NATO vibration standardsoftware MIL-STD-810G were recorded...
May 28, 2018: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
Han Bao, Tomoya Sakai, Issei Sato, Masashi Sugiyama
Multiple instance learning (MIL) is a variation of traditional supervised learning problems where data (referred to as bags) are composed of sub-elements (referred to as instances) and only bag labels are available. MIL has a variety of applications such as content-based image retrieval, text categorization, and medical diagnosis. Most of the previous work for MIL assume that training bags are fully labeled. However, it is often difficult to obtain an enough number of labeled bags in practical situations, while many unlabeled bags are available...
May 24, 2018: Neural Networks: the Official Journal of the International Neural Network Society
Chenlu Wang, Wei Zhou, Xiaoyan Liao, Xuemei Wang, Zilin Chen
Preparation of stir bar extraction (SBSE) device with high physical and chemical stability is important and challenging by date. A novel poly (ether ether ketone) (PEEK) tube with excellent mechanical property and chemical stability was firstly used as jacket of metal bar for preparation of stir bar. By employing covalent modification method, the inherent chemical resistant problem of PEEK which restricts the modification of sorbents was well solved. After functionalization, plenty of benzoic acid groups were formed onto the PEEK jacket...
September 26, 2018: Analytica Chimica Acta
Abneesh Srivastava, R Michael Verkouteren
Isotope ratio measurements have been conducted on a series of isotopically distinct pure CO2 gas samples using the technique of dual-inlet isotope ratio mass spectrometry (DI-IRMS). The influence of instrumental parameters, data normalization schemes on the metrological traceability and uncertainty of the sample isotope composition have been characterized. Traceability to the Vienna PeeDee Belemnite(VPDB)-CO2 scale was realized using the pure CO2 isotope reference materials(IRMs) 8562, 8563, and 8564. The uncertainty analyses include contributions associated with the values of iRMs and the repeatability and reproducibility of our measurements...
May 25, 2018: Analytical and Bioanalytical Chemistry
David Bartrés-Faz, Gabriele Cattaneo, Javier Solana, Josep M Tormos, Alvaro Pascual-Leone
BACKGROUND: The contribution of psychological factors to brain health and resilience remains poorly investigated. Furthermore, their possible interaction with 'classical' cognitive reserve (CR) estimates in predicting perceived mental health and cognitive status has not been specifically addressed. METHODS: We obtained data from 1081 adults responding to questionnaires on the three meaning in life (MiL) dimensions: purpose in life (PiL), sense of coherence (SoC), and engagement with life (EwL)...
May 24, 2018: Alzheimer's Research & Therapy
Tarek Alammar, Ihor Z Hlova, Shalabh Gupta, Viktor Balema, Vitalij K Pecharsky, Anja-Verena Mudring
Three metal-organic framework (MOF) compounds, Ln0.5Gd0.5{C6H3(COO)3}; Ln = Eu, Tb, and Dy with a MIL-78 structure, have been synthesized by a solvent-free mechanochemical method from stoichiometric mixtures of benzene 1,3,5-tricarboxylic acid, C6H3(COOH)3, also known as trimesic acid, and the respective lanthanide carbonates, Ln2(CO3)3·xH2O, Ln = Eu, Gd, Tb and Dy. MIL-78 (Ln0.5Gd0.5) shows the characteristic red, green, and yellow luminescence of Eu3+, Tb3+, and Dy3+, respectively. Efficient intramolecular energy transfer from the ligand triplet state to the excited states of Ln3+ ions can be observed...
May 23, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Teryn R Roberts, Megan J Neufeld, Michael A Meledeo, Andrew P Cap, Leopoldo C Cancio, Melissa M Reynolds, Andriy I Batchinsky
BACKGROUND: Management of hemostasis is a key challenge during extracorporeal life support (ECLS). Metal organic frameworks are being investigated for use as nitric oxide (NO) catalysts for incorporation into ECLS circuitry to prevent thrombosis at the blood-biomaterial interface. A specific metal organic framework, CuBTTri, has been shown to accelerate NO-release from bioavailable donors like S-nitrosoglutathione (GSNO). We hypothesized that CuBTTri would reduce thrombus formation in whole blood (WB) and inhibit platelet aggregation...
May 21, 2018: Journal of Trauma and Acute Care Surgery
Shuaihua Zhang, Qian Yang, Zhi Li, Wenjin Wang, Xiaohuan Zang, Chun Wang, Zhi Wang
A hybrid composite featuring an iron-based metal-organic framework Material of Institute Lavoisier-88(Fe) and graphene oxide (MIL-88(Fe)/GO) was synthesized and used as the solid-phase microextraction (SPME) coating. The SPME fiber was prepared by covalent bonding of the MIL-88(Fe)/GO composite onto the stainless steel substrate. The fiber had a good durability and allowed >100 replicate extractions. The developed method, which combined the MIL-88(Fe)/GO coated fiber based SPME with gas chromatography-flame ionization detection (GC-FID), achieved low limits of detection (0...
October 15, 2018: Food Chemistry
Pedro Fatela, Joana F Reis, Goncalo V Mendonca, Toma S Freitas, Maria J Valamatos, Janne Avela, Pedro Mil-Homens
No abstract text is available yet for this article.
June 2018: Journal of Strength and Conditioning Research
Marije K Verheul, Stefan Böhringer, Myrthe A M van Delft, Jonathan D Jones, William F C Rigby, Ryan W Gan, V Michael Holers, Jess D Edison, Kevin D Deane, Koen M J Janssen, Johanna Westra, Mikael Brink, Solbritt Rantapää-Dahlqvist, Tom W J Huizinga, Annette H M van der Helm-van Mil, Diane van der Woude, Rene E M Toes, Leendert A Trouw
OBJECTIVE: In rheumatoid arthritis(RA), the autoantibodies anti-citrullinated protein antibodies(ACPA) and rheumatoid factor(RF) are commonly used to aid RA diagnosis. Although these autoantibodies are mainly found in RA, their specificity is not optimal. It is therefore difficult to identify RA patients, especially in very early disease, based on the presence of ACPA and RF alone. Also, anti-carbamylated protein(anti-CarP) antibodies have diagnostic and prognostic value as the presence of anti-CarP antibodies associates with joint damage in RA patients and with future RA development in arthralgia patients...
May 21, 2018: Arthritis & Rheumatology
Weibin Liang, Lin Li, Jingwei Hou, Nicholas D Shepherd, Thomas D Bennett, Deanna M D'Alessandro, Vicki Chen
Composite membranes with defective metal-organic frameworks (MOFs) connect the emerging fields of MOF topological modification, MOF-polymer interfacial engineering and composite material functionalization. Although defective MOFs can be fabricated via thermal or chemical treatment, the relationship between hierarchical MOF structure and their performance in a polymeric membrane matrix has so far not been investigated. Here we show how a modulator fumarate-based MIL-53(Al) microwave synthesis process results in defective MOFs...
April 14, 2018: Chemical Science
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