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https://www.readbyqxmd.com/read/28531948/an-alternative-approach-to-risk-rank-chemicals-on-the-threat-they-pose-to-the-aquatic-environment
#1
Andrew C Johnson, Rachel L Donnachie, John P Sumpter, Monika D Jürgens, Claudia Moeckel, M Gloria Pereira
This work presents a new and unbiased method of risk ranking chemicals based on the threat they pose to the aquatic environment. The study ranked 12 metals, 23 pesticides, 11 other persistent organic pollutants (POPs), 13 pharmaceuticals, 10 surfactants and similar compounds and 2 nanoparticles (total of 71) of concern against one another by comparing their median UK river water and median ecotoxicity effect concentrations. To complement this, by giving an assessment on potential wildlife impacts, risk ranking was also carried out by comparing the lowest 10th percentile of the effects data with the highest 90th percentile of the exposure data...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28529799/new-m-m-3-arsenates-the-framework-structures-of-agm-3-haso4-2-m-3-al-ga-and-m-gaas2o7-m-na-ag
#2
Karolina Schwendtner, Uwe Kolitsch
The crystal structures of hydro-thermally synthesized silver(I) aluminium bis-[hydrogen arsenate(V)], AgAl(HAsO4)2, silver(I) gallium bis-[hydrogen arsenate(V)], AgGa(HAsO4)2, silver gallium diarsenate(V), AgGaAs2O7, and sodium gallium diarsenate(V), NaGaAs2O7, were determined from single-crystal X-ray diffraction data collected at room temperature. The first two compounds are representatives of the MCV-3 structure type known for KSc(HAsO4)2, which is characterized by a three-dimensional anionic framework of corner-sharing alternating M(3+)O6 octa-hedra (M = Al, Ga) and singly protonated AsO4 tetra-hedra...
May 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28529777/crystal-structures-of-titanium-aluminium-and-gallium-complexes-bearing-two-%C3%AE-2-ch3-units
#3
Tim Oswald, Mira Diekmann, Annika Frey, Marc Schmidtmann, Rüdiger Beckhaus
The isotypic crystal structures of two titanocene complexes containing an EMe3 unit (E = Al, Ga; Me = meth-yl) with two μ2-coordinating methyl groups, namely [μ-1(η(5))-(adamantan-1-yl-2κC(1))cycylo-penta-dien-yl]di-μ2-methyl-methyl-2κC-[1(η(5))-penta-methyl-cyclo-penta-dien-yl]aluminiumtitanium(III), [AlTi(CH3)3(C10H15)(C15H18)], and [μ-1(η(5))-(adamantan-1-yl-2κC(1))cycylo-penta-dien-yl]di-μ2-methyl-methyl-2κC-[1(η(5))-penta-methyl-cyclo-penta-dien-yl]galliumtitanium(III), [GaTi(CH3)3(C10H15)(C15H18)], are reported...
May 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28528059/diode-pumped-laser-for-lung-sparing-surgical-treatment-of-malignant-pleural-mesothelioma
#4
Servet Bölükbas, Christian Biancosino, Bassam Redwan, Michael Eberlein
Surgical resection represents one of the essential cornerstones in multimodal treatment of malignant pleural mesothelioma. In cases of tumor infiltration of the lung, lung-scarifying procedures such as lobectomies or pneumonectomies might be necessary to achieve macroscopic complete resection. However, this increases the morbidity of the patients because it leads to possible delay of the planned chemotherapy or radiotherapy. Innovative surgical techniques are therefore required to enable salvage of the lung parenchyma and optimization of surgical treatment...
June 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28527763/aluminium-resistant-plant-growth-promoting-bacteria-induce-overexpression-of-aluminium-stress-related-genes-in-arabidopsis-thaliana-and-increase-the-ginseng-tolerance-against-aluminium-stress
#5
Mohamed El-Agamy Farh, Yeon-Ju Kim, Johan Sukweenadhi, Priyanka Singh, Deok-Chun Yang
Panax ginseng is an important cash crop in the Asian countries due to its pharmaceutical effects, however the plant is exposed to various abiotic stresses, lead to reduction of its quality. One of them is the Aluminum (Al) accumulation. Plant growth promoting bacteria which able to tolerate heavy metals has been considered as a new trend for supporting the growth of many crops in heavy metal occupied areas. In this study, twelve bacteria strains were isolated from rhizosphere of diseased Korean ginseng roots located in Gochang province, Republic of Korea and tested for their ability to grow in Al-embedded broth media...
July 2017: Microbiological Research
https://www.readbyqxmd.com/read/28522427/association-of-chitosan-and-aluminium-as-a-new-adjuvant-strategy-for-improved-vaccination
#6
F Lebre, D Bento, J Ribeiro, M Colaço, G Borchard, M C Pedroso de Lima, O Borges
The use of particulate adjuvants offers an interesting possibility to enhance and modulate the immune responses elicited by vaccines. Aluminium salts have been extensively used as vaccine adjuvants, but they lack the capacity to induce a strong cellular and mucosal immune response. Taking this into consideration, in this study we designed a new antigen delivery system combining aluminium salts with chitosan. Chitosan-aluminium nanoparticles (CH-Al NPs) exhibited a mean diameter of 280nm and a positive surface charge...
May 15, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28516859/recombinant-esterase-from-corynebacterium-pseudotuberculosis-in-dna-and-subunit-recombinant-vaccines-partially-protects-mice-against-challenge
#7
Alexandre Antunes Brum, Andrea de Fatima Silva Rezende, Francisco Silvestre Brilhante, Thais Collares, Karine Begnine, Fabiana Kommling Seixas, Tiago Veiras Collares, Odir Antônio Dellagostin, Vasco Azevedo, Anderson Santos, Ricardo Wagner Portela, Sibele Borsuk
PURPOSE: We tested the efficacy of the esterase encoded by cp1002_RS09720 from Corynebacteriumpseudotuberculosis in recombinant subunit and DNA caseous lymphadenitis (CLA) vaccines. This target was predicted as one of the best CLA vaccine candidates by mature epitope density analysis. METHODOLOGY: Gene cp1002_RS09720 was cloned into two different vectors (pAE for subunit vaccine and pTARGET for DNA vaccine). Four groups of 15 mice each were immunized with the recombinant esterase rCP09720 associated with aluminium hydroxide adjuvant (G1), pTARGET/cp09720 DNA vaccine (G2), a naked pTARGET (G3) or PBS as a negative control (G4)...
May 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28516788/anti-oxidative-effect-of-resveratrol-on-aluminum-induced-toxicity-in-rat-cerebral-tissue
#8
M M H Zakaria, B Hajipour, R Estakhri, B M Saleh
INTRODUCTION: The direct protective effects of resveratrol against oxidative stress have been demonstrated in neuroglial cells, the mechanisms of these effects are not fully understood. The aim of this research was to study the effect of resveratrol on AL induced cerebral injury in rat. METHODS: We divided the groups as follows with 10 animals each: a) Group I - served as control receiving normal drinking water and diet ad libitum. b) Group II - animals were administered aluminum at a dose level of 100 mg/kg body weight for a period of 6 weeks daily through oral gavage...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28513480/highly-sensitive-and-scalable-aao-based-nano-fibre-sers-substrate-for-sensing-application
#9
L K Lim, B K Ng, C Y Fu, Landobasa Y M Tobing, D H Zhang
Well-ordered periodic nanostructures are excellent substrates for many surface-enhanced Raman spectroscopy (SERS) applications. Conventional fabrication approaches such as high precision electron beam lithography or focused ion beam produce high resolution nano-features with great reproducibility at the expense of low throughput. In this work, a highly sensitive and scalable AAO-nano-fibre (ANF) SERS substrate is demonstrated by optimising the second anodisation time of the standard two-step anodisation of aluminium and performing an additional wet etching step on the resulting AAO substrate...
May 17, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28513292/analysis-of-cutting-oil-emulsion-destabilization-by-aluminium-sulfate
#10
Nattawin Chawaloesphonsiya, Pascal Guiraud, Pisut Painmanakul
The destabilization mechanism of the high stable cutting-oil emulsion by aluminium sulfate (Al2(SO4)3) was investigated since it can affect properties of aggregates and following separation units. Al2(SO4)3 dosage and pH were key factors in the destabilization. The effective separation occurred when precipitated Al(OH)3 is dominated at the neutral pH of 6.5-7.0. The best separation can be achieved when solid flocs were formed at 1.0 mM, which exceeded the dosage from the CCC of 0.75 mM. Two different mechanisms were proved for the emulsion destabilization depending upon the Al(3+) concentration under this pH range...
May 17, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28508901/from-polyethylene-waxes-to-hdpe-using-an-%C3%AE-%C3%AE-bis-arylimino-2-3-5-6-bis-pentamethylene-pyridyl-chromium-iii-chloride-pre-catalyst-in-ethylene-polymerisation
#11
Chuanbing Huang, Shizhen Du, Gregory A Solan, Yang Sun, Wen-Hua Sun
Five examples of α,α'-bis(arylimino)-2,3:5,6-bis(pentamethylene)pyridyl-chromium(iii) chlorides (aryl = 2,6-Me2Ph Cr1, 2,6-Et2Ph Cr2, 2,6-i-Pr2Ph Cr3, 2,4,6-Me3Ph Cr4, 2,6-Et2-4-MePh Cr5) have been synthesized by the one-pot template reaction of α,α'-dioxo-2,3:5,6-bis(pentamethylene)pyridine, CrCl3·6H2O and the corresponding aniline. The molecular structures of Cr1 and Cr4 reveal distorted octahedral geometries with the N,N,N-ligand adopting a mer-configuration. On activation with an aluminium alkyl co-catalyst, Cr1-Cr5 exhibited high catalytic activities in ethylene polymerization and showed outstanding thermal stability operating effectively at 80 °C with activities up to 1...
May 16, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28499970/chitinase1-contributed-to-a-potential-protection-via-microglia-polarization-and-a%C3%AE-oligomer-reduction-in-d-galactose-and-aluminum-induced-rat-model-with-cognitive-impairments
#12
Qian Xiao, Weihua Yu, Qi Tian, Xue Fu, Xia Wang, Min Gu, Yang Lü
Chitinase activity is increased in Alzheimer's disease (AD). However, the role of chitinase1 in AD is unknown. We investigated the effects of chitinase1 on Alzheimer's pathology and microglia function. Artificial chitinase1 and chitinase inhibitor (chitinase-IN-2) were used to determine the effects of chitinase1 on inflammatory factors and β-amyloid (Aβ) oligomer deposition in D-galactose/AlCl3-induced rat model with cognitive impairments. Aβ-treated N9 microglia cells were analyzed to further verify whether the changes in inflammatory factors following chitinase1 treatment were associated with microglia alternative activation...
May 10, 2017: Neuroscience
https://www.readbyqxmd.com/read/28498660/a-self-assembled-ruthenium-ii-porphyrin-aluminium-iii-porphyrin-fullerene-triad-for-long-lived-photoinduced-charge-separation
#13
Agnese Amati, Paolo Cavigli, Axel Kahnt, Maria Teresa Indelli, Elisabetta Iengo
A very efficient metal-mediated strategy led, in a single step, to a quantitative construction of a new three-component multi-chromophoric system containing one fullerene monoadduct, one aluminium(III) monopyridylporphyrin, and one ruthenium(II) tetraphenylporphyrin. The Al(III) monopyridylporphyrin component plays the pivotal role in directing the correct self-assembly process, and behaves as the antenna unit for the photoinduced processes of interest. A detailed study of the photophysical behavior of the triad was carried out in different solvents (DCM, THF, Toluene) by stationary and time-resolved emission and absorption spectroscopy in the pico- and nanosecond time domains...
May 12, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28489062/ultrasound-transmission-tomography-for-detecting-and-measuring-cylindrical-objects-embedded-in-concrete
#14
Dalmay Lluveras Núñez, Miguel Ángel Molero-Armenta, Miguel Ángel García Izquierdo, Margarita González Hernández, José Javier Anaya Velayos
This study explores the feasibility of using transmission tomographic images based on attenuation measures in transmission to detect and estimate the most common materials that are embedded in concrete, reinforcements and natural and artificial voids. A limited set of concrete specimens have been made in which cylindrical objects such as bars/tubes of steel, PVC and aluminium have been embedded to analyse the effect of size and material. The methodology and scope of this study is presented and numerical simulations are carried out to optimize the emitter-receiver configuration and to understand the complex physical propagation phenomena of ultrasonic signals that travel through concrete with embedded inclusions...
May 10, 2017: Sensors
https://www.readbyqxmd.com/read/28487776/reversible-myocardial-injury-and-intraventricular-thrombus-associated-with-aluminium-phosphide-poisoning
#15
Abdelkader Jalil El Hangouche, Hala Fennich, Oumaima Alaika, Taoufiq Dakka, Zaineb Raissouni, Latifa Oukerraj, Nawal Doghmi, Mohamed Cherti
Aluminium phosphide (ALP) is widely used as a fumigant pesticide. In case of ALP poisoning, it is responsible for myocardial dysfunction, related to toxic myocarditis, and hemodynamic disorders. We report a case of a 28-year-old female who had intentionally ingested ALP and was admitted with cardiogenic shock. The transthoracic echocardiography (TTE) at the time of admission showed severe global myocardial hypokinesia with the presence of a giant left ventricular thrombus. Cardiovascular magnetic resonance (CMR) revealed extensive toxic myocarditis with a left ventricular systolic dysfunction...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28485735/the-mechanism-of-eccrine-sweat-pore-plugging-by-aluminium-salts-using-microfluidics-combined-with-small-angle-x-ray-scattering
#16
Alice Bretagne, Franck Cotot, Mireille Arnaud-Roux, Michael Sztucki, Bernard Cabane, Jean-Baptiste Galey
Aluminium salts are widely used to control sweating for personal hygiene purposes. Their mechanism of action as antiperspirants was previously thought to be a superficial plugging of eccrine sweat pores by the aluminium hydroxide gel. Here we present a microfluidic T junction device that mimics sweat ducts, and is designed for the real time study of interactions between sweat and ACH (Aluminium Chloro Hydrate) under conditions that lead to plug formation. We used this device to image and measure the diffusion of aluminium polycationic species in sweat counter flow...
May 9, 2017: Soft Matter
https://www.readbyqxmd.com/read/28479362/preparation-of-nanoemulsions-by-premix-membrane-emulsification-which-parameters-have-a-significant-influence-on-the-resulting-particle-size
#17
Sandra Gehrmann, Heike Bunjes
Oil-in-water emulsions with particle sizes smaller than 200 nm are interesting carrier systems for poorly water soluble drugs. Such emulsions can be produced by premix membrane emulsification. In this study, it was systematically investigated which process and formulation parameters have a strong influence on the resulting quality of a triglyceride emulsion. The influence of the pre-emulsion quality and the emulsifier concentration was examined. Also a design of experiments (DoE) approach was carried out: variables included were emulsifier (poloxamer 188, Tween 80, sucrose laurate), flow rate, cycle number and membrane material (polyester, nylon, cellulose acetate and aluminium oxide; pore sizes: 200 nm) and responses were d50-value and span for particle size and distribution width...
May 4, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28479095/delivery-of-immunoreactive-antigen-using-a-controllable-needle-free-jet-injector
#18
N Catherine Hogan, Melis N Anahtar, Andrew J Taberner, Ian W Hunter
Intradermal immunization of mice against hepatitis B surface antigen (HBsAg) using a novel real-time controlled jet injector was assessed by comparison with intradermal and subcutaneous injection of antigen using a 27G needle and syringe. Three doses of aluminium-absorbed HBsAg were delivered at 0, 14, and 28days. Antibodies to HBsAg were detected only in mice injected with antigen with antibody levels increasing with secondary injections. Mice vaccinated by intradermal injection using the jet injector or subcutaneous needle injection exhibited comparable immune responses at day 47...
May 4, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28470061/sunlight-induced-preparation-of-functionalized-gold-nanoparticles-as-recyclable-colorimetric-dual-sensor-for-aluminum-and-fluoride-in-water
#19
Anshu Kumar, Madhuri Bhatt, Gaurav Vyas, Shreya Bhatt, Parimal Paul
A sunlight induced simple green route has been developed for the synthesis of polyacrylate functionalized gold nanoparticles (PAA-AuNPs), in which poly(acrylic acid) functions as a reducing as well as stabilizing agent. This material has been characterized on the basis of spectroscopic and microscopic studies; it exhibited selective colorimetric detection of Al(3+) in aqueous media, and the Al(3+) induced aggregated PAA-AuNPs exhibited detection of F(-) with sharp color change and high selectivity and sensitivity out of a large number of metal ions and anions tested...
May 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28469821/evaluation-of-the-effect-of-three-innovative-recyling-methods-on-the-shear-bond-strength-of-stainless-steel-brackets-an-in-vitro-study
#20
Neeraj Gupta, Dilip Kumar, Aparna Palla
BACKGROUND: Orthodontists are commonly faced with the decision of what to do with debonded or inaccurately positioned brackets. An economical option to this dilemma is to recycle the brackets. Many recycling methods have been proposed, but the optimal bond strength of these recycled brackets needs further evaluation. Objectives: To evaluate and compare the effect of three recycling methods: (i) Sandblasting (ii) Sandblasting / direct flaming (iii) Sandblasting /direct flaming /acid bath solution on shear bond strength (SBS) of stainless steel brackets...
April 2017: Journal of Clinical and Experimental Dentistry
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