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https://www.readbyqxmd.com/read/28643828/adaptability-of-the-metal-iii-iv-1-2-3-trioxobenzene-rod-secondary-building-unit-for-the-production-of-chemically-stable-and-catalytically-active-mofs
#1
Georges Mouchaham, Brian Abeykoon, Mónica Giménez-Marqués, Sergio Navalon, Andrea Santiago-Portillo, Maame Affram, Nathalie Guillou, Charlotte Martineau, Hermenegildo Garcia, Alexandra Fateeva, Thomas Devic
The use of a 5,10,15,20-tetrakis(3,4,5-trihydroxyphenyl)porphyrin has yielded a new MOF based on M-1,2,3-trioxobenzene chains that can be made of M = Zr(iv) or RE(iii) (RE = rare earth), showing a very high and limited chemical stability, respectively. The robust metallated Zr-analogue, Co-MIL-173(Zr), has proven to be a heme-like heterogeneous catalyst suitable for aerobic oxidation of hydrocarbons.
June 23, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28634762/rapid-preconcentration-of-viable-bacteria-using-magnetic-ionic-liquids-for-pcr-amplification-and-culture-based-diagnostics
#2
Kevin D Clark, Jeffrey A Purslow, Stephen A Pierson, Omprakash Nacham, Jared L Anderson
In this study, a series of magnetic ionic liquids (MILs) were investigated for the extraction and preconcentration of bacteria from aqueous samples. By dispersing small volumes (e.g., 15 μL) of MIL within an aqueous cell suspension, bacteria were rapidly extracted and isolated using a magnetic field. Of the seven hydrophobic MILs examined, the trihexyl(tetradecyl)phosphonium Ni(II) hexafluoroacetylacetonate ([P66614(+)][Ni(hfacac)3(-)]) MIL exhibited the greatest enrichment of viable Escherichia coli K12 when coupled with microbiological culture as the detection method...
June 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28634613/breathing-induced-new-phase-transition-in-an-mil-53-al-nh2-metal-organic-framework-under-high-methane-pressures
#3
Linius Bolinois, Tanay Kundu, Xuerui Wang, Yuxiang Wang, Zhigang Hu, Kenny Koh, Dan Zhao
The high pressure methane sorption tests on a flexible metal-organic framework [MIL-53(Al)-NH2] reveal a new phase transition to a large pore (lp) phase above 45 bar. The mixed-ligand strategy and pressure cycling tests are suggested to reduce the pressure requirement of such a phase transition for applications in natural gas storage.
June 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28633195/survival-of-patients-with-cancer-starting-chronic-dialysis-data-from-kidney-and-cancer-registries-in-lower-normandy
#4
Clémence Béchade, Olivier Dejardin, Simona Bara, Véronique Bouvier, Anne-Valérie Guizard, Rémy De Mil, Xavier Troussard, Guy Launoy, Thierry Lobbedez
AIM: Cancer and chronic kidney disease are known to be associated. The way in which a history of cancer can influence outcome in dialysis is not well described. This work aimed to evaluate survival of cancer patients starting chronic dialysis after their diagnosis of cancer. METHODS: We merged data from cancer registries and a dialysis registry, and explored patients' charts. RESULTS: Between January 2001 and December 2008, 74 patients with incident cancer in the two-counties-study-area (Calvados and Manche) started chronic dialysis after their diagnosis of cancer...
June 20, 2017: Nephrology
https://www.readbyqxmd.com/read/28630197/pharmacodynamics-of-cefepime-combined-with-tazobactam-against-clinically-relevant-enterobactereaceae-in-a-neutropenic-mouse-thigh-model
#5
Maria J Melchers, Anita C van Mil, Claudia Lagarde, Jan den Hartigh, Johan W Mouton
The lack of new antibiotics prompted the investigation of the combination of two existing agents cefepime, a broad-spectrum cephalosporin and tazobactam to broaden its efficacy against extended-spectrum beta-lactamase producing Enterobacteriaceae. We determined the pharmacokinetic and pharmacodynamic properties of the combination in a murine neutropenic thigh model in order to establishing its exposure- response relationships (ERR). The PK of cefepime was determined for five doses; that of tazobactam was determined in earlier studies (Melchers et al Antimicrob...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28628180/enhancing-the-biofuel-upgrade-performance-for-pd-nanoparticles-via-increasing-the-support-hydrophilicity-of-metal-organic-frameworks
#6
Qi Sun, Meng Chen, Briana Aguila, Nicholas Nguyen, Shengqian Ma
In this work, the influence of the hydrophilic/hydrophobic nature of metal-organic framework (MOF) materials on the catalytic performance of supported Pd nanoparticles for biofuel upgrade was studied. We show that the introduction of hydrophilic groups on a MOF can greatly enhance the performance of the resultant catalyst. Specifically, Pd nanoparticles supported on MIL-101-SO3Na with superhydrophilicity (Pd/MIL-101-SO3Na) far outperforms pristine MIL-101 and the benchmark catalyst Pd/C in the hydrodeoxygenation reaction of vanillin, a model component of pyrolysis oil derived from the lignin fraction...
June 19, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28626566/functional-metal-organic-framework-boosting-lithium-metal-anode-performance-via-chemical-interactions
#7
Wen Liu, Yingying Mi, Zhe Weng, Yiren Zhong, Zishan Wu, Hailiang Wang
Dendrite growth and low coulombic efficiency are two major factors that limit the utilization of Li metal electrodes in future generations of high-energy-density rechargeable batteries. This article reports the first study on metal-organic framework (MOF) materials for boosting the electrochemical performance of Li metal electrodes and demonstrates the power of molecular-structure functionalization for realizing desirable ion transport and Li metal nucleation and growth. We show that dendrite-free dense Li deposition and stable Li plating/stripping cycling with high coulombic efficiency are enabled by modifying a commercial polypropylene separator with a titanium-based MOF (NH2-MIL-125(Ti)) material...
June 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28620895/the-standardized-postoperative-checklist-for-bariatric-surgery-a-tool-for-safe-early-discharge
#8
Stefanie R van Mil, Lucia E Duinhouwer, Guido H H Mannaerts, L Ulas Biter, Martin Dunkelgrun, Jan A Apers
BACKGROUND: Morbidly obese patients are at higher risk of complications after surgery. In bariatric surgery, pre- and intra-operative checklists are commonly used to identify high-risk patients preoperatively, to decrease the number of postoperative complications. This pilot study evaluates the effect of a postoperative checklist in bariatric surgery, addressing regularly measured parameters, on the occurrence and early recognition of complications. METHODS: An in-house developed postoperative checklist was used on the first postoperative day after bariatric surgery and included information on nausea, pain, temperature, heart rate, and laboratory markers...
June 15, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28618664/an-epidemiological-approach-to-characterise-the-human-exposure-pathways-in-a-contaminated-estuarine-environment
#9
Ausenda Machado, Ana Paula Fernandes, Eleonora Paixão, Sandra Caeiro, Carlos Matias-Dias
This study's aim was to develop and implement an integrative epidemiologic cross-sectional study that allows identifying and characterising exposure pathways of populations living and working on the shores of a contaminated estuarine environment. Population residing in Carrasqueira, located on the Sado estuary with known contaminated areas was compared to another population on a noncontaminated estuary (Vila Nova de Mil Fontes - VNMF), considered a nonexposed population. Simple random samples of individuals were selected in each study population from the National Health Service Lists: 140 individuals were selected in Carrasqueira and 219 in VNMF...
June 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28618230/anti-mosquito-activity-of-a-titanium-organic-framework-supported-on-fabrics
#10
Reda M Abdelhameed, Omnia M H M Kamel, A Amr, Joao Rocha, Artur M S Silva
Waste swamps, stagnant water and poor hygiene practices result in the proliferation of mosquitoes that may cause transmissible and infectious diseases, such as malaria, typhoid, cholera, and Zikavirus sickness. Composites of the traditional natural fibres cotton, viscose and linen, and a Ti-bearing metal-organic framework, NH2-MIL-125, is very effective against mosquitoes, in the absence of any conventional insecticides. Prior to coating with NH2-MIL-125 crystals, the fabrics have been modified with 3-glycidyloxypropyltrimethoxysilane...
June 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28614433/diagnostic-labels-of-nanda-i-in-a-southern-region-of-spain
#11
Rafael González-Rodríguez, María de Los Ángeles Martelo-Baro, Pilar Bas-Sarmiento
Objective: to determine the incidence of NANDA-I diagnostic labels (North American Nursing Diagnosis Association-International) and to establish the distribution of cases of assistance and the associated labels, according to sociodemographic variables (age and sex). Method: descriptive, cross-sectional epidemiological study of labels of NANDA-I, under ecological design. The distribution of labels was analyzed according to sex and age; the corresponding frequencies were calculated and for each label the incidence were calculated rates with aggregate data from the attended cases...
June 8, 2017: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/28613247/thin-film-nanocomposite-membrane-filled-with-metal-organic-frameworks-uio-66-and-mil-125-nanoparticles-for-water-desalination
#12
Mohammed Kadhom, Weiming Hu, Baolin Deng
Knowing that the world is facing a shortage of fresh water, desalination, in its different forms including reverse osmosis, represents a practical approach to produce potable water from a saline source. In this report, two kinds of Metal-Organic Frameworks (MOFs) nanoparticles (NPs), UiO-66 (~100 nm) and MIL-125 (~100 nm), were embedded separately into thin-film composite membranes in different weight ratios, 0%, 0.05%, 0.1%, 0.15%, 0.2%, and 0.3%. The membranes were synthesized by the interfacial polymerization (IP) of m-phenylenediamine (MPD) in aqueous solution and trimesoyl chloride (TMC) in an organic phase...
June 14, 2017: Membranes
https://www.readbyqxmd.com/read/28612864/study-of-the-scale-up-formulation-ageing-and-ammonia-adsorption-capacity-of-mil-100-fe-cu-btc-and-cpo-27-ni-for-use-in-respiratory-protection-filters
#13
S Hindocha, S Poulston
The metal-organic frameworks (MOFs) MIL-100(Fe), Cu-BTC and CPO-27(Ni) were synthesised in 1 kg batches. The materials were then formed in two different industrially relevant ways. Firstly, dry granulation was used to produce pellets which were sieved to give material with a 300-1000 μm size, and the fines were subsequently recycled to mimic a large scale industrial process. Secondly, wet granulation with a polymer was used to produce granules which were again sieved to 300-1000 μm. XRD data shows that the structures of MIL-100(Fe) and CPO-27(Ni) remain intact during both forming processes, whilst Cu-BTC is shown to degrade during processing...
June 14, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28609616/facile-synthesis-of-potassium-poly-heptazine-imide-phik-ti-based-metal-organic-framework-mil-125-nh2-composites-for-photocatalytic-applications
#14
Nicolás Artemio Rodríguez, Aleksandr Savateev, Maria Alejandra Grela, Dariya Dontsova
Photocatalytically active composites comprising potassium poly(heptazine imide) (PHIK) and a Ti-based Metal-Organic Framework (MOF, MIL-125-NH2) are prepared in-situ by simply dispersing both materials in water. The driving forces of composite formation are the electrostatic interactions between the solids and the diffusion of potassium ions from PHIK to MIL-125-NH2. This mechanism implies that other composites of poly(heptazine imide) salts and different MOFs bearing positive surface charge can potentially be obtained in a similar fashion...
June 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28607404/effective-adsorption-and-removal-of-phosphate-from-aqueous-solutions-and-eutrophic-water-by-fe-based-mofs-of-mil-101
#15
Qiying Xie, Yan Li, Zhaoling Lv, Hang Zhou, Xiangjun Yang, Jing Chen, Hong Guo
Although many efforts have been devoted to the adsorptive removal of phosphate from aqueous solutions and eutrophic water, it is still highly desirable to develop novel adsorbents with high adsorption capacities. In this study, Fe-based metal-organic frameworks (MOFs), MIL-101 and NH2-MIL-101, are fabricated through a general facile strategy. Their performance as an adsorbent for phosphate removal is investigated. Experiments are performed to study the effects of various factors on the phosphate adsorption, including adsorbent dosage, contact time and co-existing ions...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606964/differences-in-the-symptomatic-phase-preceding-acpa-positive-and-acpa-negative-ra-a-longitudinal-study-in-arthralgia-during-progression-to-clinical-arthritis
#16
Leonie E Burgers, Hanna W van Steenbergen, Robin M Ten Brinck, Tom Wj Huizinga, Annette Hm van der Helm-van Mil
OBJECTIVE: Although anticitrullinated protein antibody (ACPA)-positive and ACPA-negative rheumatoid arthritis (RA) have different aetiopathology, the clinical presentation at the time of diagnosis is similar. This study evaluated whether there are phenotypic differences in the symptomatic pre-RA phase. METHODS: Patients with arthralgia included in the Leiden clinically suspect arthralgia cohort who developed arthritis during follow-up were studied (n=67). Symptoms at symptom onset, symptoms and signs at presentation with arthralgia and time to arthritis development were compared between ACPA-positive and ACPA-negative patients...
June 12, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28604907/solvent-dependent-selective-cation-exchange-in-anionic-frameworks-based-on-cobalt-ii-and-triphenylamine-linkers-reactor-dependent-synthesis-and-sorption-properties
#17
Oluseun Akintola, David Hornig, Axel Buchholz, Helmar Görls, Winfried Plass
Two cobalt(ii) coordination polymers with anionic networks of formulae {(Me2NH2)2[CoCl(ntb)]}n (JUMP-2) and {(Me2NH2)2[Co5(ntb)4(H2O)3(Me2NH)]}n (previously reported as MIL-144 by Livage et al., Microporous Mesoporous Mater., 2012, 157, 37) have been obtained via a solvothermal reaction of cobalt chloride and 4,4',4''-nitrilotribenzoic acid (H3ntb) in DMF employing two differently-sized reactors, while using the same absolute amount of reactants. Structure analysis revealed that JUMP-2 crystallized in the monoclinic space group P21/n and displays a two-dimensional (2D) network, which by topological analysis was characterized as a layered 3-connected hcb net...
June 12, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28602308/magnetic-ionic-liquids-as-extraction-solvents-in-vacuum-headspace-single-drop-microextraction
#18
María J Trujillo-Rodríguez, Verónica Pino, Jared L Anderson
A vacuum headspace single-drop microextraction method based on the use of magnetic ionic liquids (vacuum MIL-HS-SDME) for the determination of short chain free fatty acids is described for the first time. The basis of the method involves the use of a rod magnet to aid in maintaining a small microdroplet of magnetic ionic liquid (MIL) during headspace single-drop microextraction (HS-SDME). The application favors reduced pressure conditions inside the sampling vial while maintaining the MIL droplet in the headspace...
September 1, 2017: Talanta
https://www.readbyqxmd.com/read/28601249/the-2010-acr-eular-criteria-are-not-sufficiently-accurate-in-the-early-identification-of-autoantibody-negative-rheumatoid-arthritis-results-from-the-leiden-eac-and-espoir-cohorts
#19
Debbie M Boeters, Cécile Gaujoux-Viala, Arnaud Constantin, Annette H M van der Helm-van Mil
OBJECTIVES: The 2010 ACR/EULAR criteria were derived to classify rheumatoid arthritis (RA) earlier in time. Previous studies indeed observed that the 2010 criteria were fulfilled earlier than the 1987 criteria. This study determined whether the 2010 criteria perform equally in early classification of autoantibody-positive and autoantibody-negative RA. METHODS: From the total Leiden-EAC (n = 3448) and ESPOIR (n = 813) RA patients who fulfilled the 1987 RA criteria at 1 year but not at presentation were selected (n = 463 and n = 53, respectively), as these patients were classified with delay with the 1987 criteria...
April 29, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28599197/tomato-lycopersicon-esculentum-or-lycopene-supplementation-attenuates-ventricular-remodeling-after-myocardial-infarction-through-different-mechanistic-pathways
#20
Bruna L B Pereira, Patrícia P Reis, Fábio E Severino, Tainara F Felix, Mariana G Braz, Flávia R Nogueira, Renata A C Silva, Ana C Cardoso, Maria A M Lourenço, Amanda M Figueiredo, Fernanda Chiuso-Minicucci, Paula S Azevedo, Bertha F Polegato, Katashi Okoshi, Ana A H Fernandes, Sergio A R Paiva, Leonardo A M Zornoff, Marcos F Minicucci
The objective of this study was to evaluate the influence of tomato or lycopene supplementation on cardiac remodeling after myocardial infarction (MI). Male Wistar rats were assigned to four groups: the sham group (animals that underwent simulated surgery) that received a standard chow (S; n=18), the infarcted group that received a standard chow (MI; n=13), the infarcted group supplemented with lycopene (1 mg of lycopene/kg body weight/day) (MIL; n=16) and the infarcted group supplemented with tomato (MIT; n=16)...
June 1, 2017: Journal of Nutritional Biochemistry
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