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Yang Xinchun - - 2014
The binary nano zero-valent iron/barium ferrite (NZVI/BFO) microfibers with uniform diameters and high porosity were prepared by the organic gel-thermal selective reduction process. The composite microfibers are fabricated from nano zero-valent iron and nano BaFe12O19 grains. The effects of pH, adsorbent dosage, and contact time on the adsorption of heavy ...
Du Xiongwei - - 2014
We have investigated the impact of aqueous suspension of single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) on performance of repeated PCR, and discussed their thermal impact on DNA characteristics. Both SWCNTs and MWCNTs are found significantly enhancing the specificity of the repeated PCR and capable of inhibition of ...
Lubasova D - - 2014
High bacterial filtration efficiency (BFE) filters, based on nanofibers derived from blends of grain proteins and poly-ethylene-oxide (PEO), were produced by an electrospinning process. Specifically, polymer blends consisting of purified soy flour/PEO with a ratio of 7/3 were spun into nanofibers and characterized. A new laboratory based experimental apparatus for ...
Rasappa Sozaraj - - 2014
The need for materials for high energy storage has led to very significant research in supercapacitor systems. These can exhibit electrical double layer phenomena and capacitances up to hundreds of F/g. Here, we demonstrate a new supercapacitor fabrication methodology based around the microphase separation of PS-b-PMMA which has been used ...
Kim Deok-Kee - - 2014
IrO2 nanodot (ND) growth by plasma enhanced atomic layer deposition as a charge storage layer has been investigated. As-deposited IrO2 NDs showed a high density of 2.38 x 10(12)/cm2 and a small mean diameter of 3.22 nm, and turned into a spherical shape with a large dot-to-dot separation after annealing. ...
Liu Haitao - - 2014
Ordered mesoporous silica was successfully synthesized by using different chain-length chiral anionic surfactants, N-acylalanine and N-acylvaline as templates, and N-trimethoxy silylpropyl-N, N, N-trimethyl ammonium (TMAPS) as a co-structure-directing agent (CSDA) under weakly acidic conditions. The synthesized products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen ...
Lee Sunwoo - - 2014
We investigate the dependence of charge carrier mobility by trap states at various interface regions through channel engineering. Prior to evaluation of interface trap density, the electrical performance in pentaene field effect transistors (FET) with high-k gate oxide are also investigated depending on four channel engineering. As a channel engineering, ...
Liu Li - - 2014
A novel Fe3O4@ZnS nanomaterial with fluorescent and superparamagnetic properties has been successfully fabricated via TOPO-TOP synthesis with an additional coordinating component (OAm). The adsorption of OAm on the preformed magnetite nanoparticles, which were prepared in phenyl ether with oleic acid and oleyl amine, played an essential role in directing the ...
Oh Sang Hoon - - 2014
Bulk-heterojunction organic solar cells (OSCs) based on poly(3-hexylthiophene) as a donor material and (6.6) phenyl-C61-butyric acid methyl ester as an acceptor material were investigated using a poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) buffer layer that was modulated with acetic acid. The 1.71 x 10(-1) omega x cm resistivity of the pristine PEDOT:PSS film ...
Deng Mengmeng - - 2014
Inkjet printing is a non-contact and low-cost method for high resolution deposition of nanomaterials and mass production of electro-devices. In this study, an environmentally friendly gold nanoparticles (AuNPs) ink was prepared and electrochemical electrodes were fabricated through inkjet printing technology. Electrochemical behaviors of the printed electrodes with different printing layers ...
Cao Yongqiang - - 2014
The high luminescent near infrared (NIR)--emitting CdTe nanocrystals (NCs) with 3-mercaptopropionic acid (MPA) as the stabilized molecules had been sucessfully fabricated by a facile and simple water-reflux method. By virtue of the characterizations for the as-prepared MPA-capped CdTe NCs, such as UV-Vis absorption, steady-state photoluminescence (PL), time-resolved PL spectra and ...
Yonezawa Tetsu - - 2014
Copper (Cu) fine particles were prepared by room-temperature hydrazine reduction of Cu oxide microparticles. In this study, to reveal the formation process of metallic Cu homogeneous fine particles from cupric oxide (CuO) microparticles, hydrazine was added to a CuO slurry at room temperature. The morphological changes in the product during ...
Li Menghua - - 2014
Hexagonal BN crystals have been synthesized from a facile one-step solid state reaction route by sodium tetraphenylborate, hydrazine, zinc powder and sulphur powder as the reactants. The SEM and TEM results showed the BN crystals had the morphology of one-dimensional rod-like shape and with diameters in the range of 100-200 ...
Ahmad Naushad - - 2014
This paper reports a large-scale synthesis of barium oxide nanorods (BaO-NRs) by simple solution method at a very low-temperature of - 60 degrees C. The as-grown BaO-NRs were characterized in terms of their morphological, structural, compositional, optical and thermal properties. The morphological characterizations of as-synthesized nanorods were done by scanning ...
Hazra Purnima - - 2014
This paper reports the temperature dependent electrical parameters of p-Silicon nanowires (SiNWs)/n-ZnO thin film based core-shell heterojunction diodes fabricated by conformally deposited zinc oxide (ZnO) by atomic layer deposition (ALD) technique on metal-assisted chemically etched SiNWs. The temperature-dependent current-voltage characteristics of the device have been estimated using the modified thermionic ...
Ranjithkumar V - - 2014
In this work, synthesis of activated carbon-Fe3O4 composites using activated carbon and iron benzoate/oxalate precursors by simple pyrolytic method and its utility for the removal of acid yellow dye from water are presented. Iron carboxylates held up into the pores of carbon dissociate at their decomposition temperatures form dispersed Fe3O4 ...
Ishihara Shinsuke - - 2014
A 1:3 molar complex of the fluoroalkyl side chain-substituted 2,6,10-tris-carboxymethoxy-3,7,11-tris(4,4,5,5,6,6,7,7,7-nonafluoroheptyloxy)triphenylene (TPF4) with the second generation dendron 3,5-bis(3,4-bis-dodecyloxybenzyloxy)-N-pyridin-4-yl-benzamide (DN) assembled through complementary hydrogen bonding to form a supramolecular columnar liquid crystal, which exhibited homeotropic alignment when sandwiched between octadecyltrichlorosilane (OTS)-coated or indium tin oxide (ITO)-coated glass plates due to specific interactions ...
Shen Xiaobing - - 2014
This study reports on the use of electrospun polyvinyl alcohol (PVA) nanofiber mats loaded with prazosin hydrochloride (PRH) as a transdermal drug delivery system, investigating the morphology of electrospun PVA nanofibers, the in vitro release characteristics of the drug from the as-spun fibers, and the influence of permeation enhancer (water-resoluble ...
Jiang Haiyun - - 2014
A superhydrophobic polypropylene (PP) coating on the surface of aluminum alloy coupons is unstable because of the existence of metastable state in curing process. Nano-titania particles were added into PP solution to form hierarchical micro- and nano-structures of PP coatings on the surface of aluminum alloy coupons. The morphology of ...
Ng B C - - 2014
Plasticized polymer electrolytes in this study are consist of biodegradable polycaprolactone (PCL) as a host, ethylene carbonate (EC) as a plasticizer, lithium triflate (LiSO3CF3) as salt and nanocomposite silicon dioxide (SiO2) as filler. Solution cast technique is used in the preparation of the plasticized polymer electrolytes. The electrical properties of ...
Orozco Victor H - - 2014
Carbon nanotubes (CNTs) and sepiolite (SEP) were modified in order to improve their compatibility with the polypropylene (PP) matrix. Carboxylic groups were introduced into the CNTs through an oxidative treatment and aliphatic chains were incorporated on SEP by ion exchange of a cationic surfactant. Maleic anhydride grafted polypropylene (PPgMA) was ...
Clemente Z - - 2014
The triazine class of herbicides includes the compounds ametryn, atrazine, and simazine, which are used to control weeds in plantations of crops such as maize, sorghum, and sugar cane. Despite their acceptance in agriculture, these herbicides can be dangerous to the environment, depending on their toxicity, the degree of contamination, ...
Francis Arul Prakash - - 2014
We have optimized a protocol for the preparation of bisdemethoxy curcumin analog nanoparticles (BDMCA-NP) by the solvent assisted process. The structural similarities between bulk and nano BDMCA were determined by Co-TLC, NMR and F-TIR. This shows that our synthesis protocol enhanced the dispersibility and reduce the size of BDMCA without ...
Le D T T - - 2014
Zinc oxide nanowires are integrated onto carbon microfibers using a two-step approach which includes electrochemical deposition of zinc and its thermal oxidation. Such nano-on-micro hybrid architecture is then used as resistive gas sensor. Some properties like mechanical flexibility, low cost and large-area fabrication make this design appealing for different applications. ...
Hu Wei-Chieh - - 2014
It is important to identify the dominant factors for governing the growth of carbon nanotubes (CNTs) and nano-onions (CNOs). A diffusion flame of a gas mixture of methane-ethylene was used as the carbon and heat sources and Ni as the catalyst for the synthesis of CNTs and CNOs. The effects ...
Kang Hungu - - 2014
Molecular-scale surface structures of self-assembled monolayers (SAMs) prepared by the adsorption of pentafluorobenzenethiols (PFBT) and pentachlorobenzenethiols (PCBT) on Au(111) were investigated by scanning tunneling microscopy (STM). High-resolution STM imaging revealed that PFBT SAMs on Au(111) have long-range ordered domains with a row structure at room temperature, whereas PCBT SAMs have ...
Prabu M - - 2014
Pulsed laser deposition method was employed to grow nanostructured Pb(Zr0.52Ti0.48)O3 (PZT) thin film on Si(100) substrate. The structural and morphological properties of the thin film were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM) respectively. Optical properties of PZT thin film were studied using spectroscopic ellipsometry (SE) and ...
Guo Lin - - 2014
A novel drug delivery system c(RGDyK)-modified Fe3O4 nanoparticles with high DOX load (R-DMP), which combines magnetic targeting, integrin alpha(v)beta3 targeting and high drug loading properties, was developed by chemical coupling both doxorubicin and peptide c(RGDyK) on the synthetic dual function magnetic nanoparticles (DMP) using a multi-hand cross-linker poly-L-glutamic acid. R-DMP ...
Jain K - - 2014
The present research work describes the formulation of arginine conjugated 3.0G Poly(propylene) imine (PPI) dendrimers, mimicking the surface structure of an endogenous angiogenesis-inhibitor endostatin; for tumor specific delivery of a model anticancer drug, doxorubicin hydrochloride (Dox). Synthesis of PPI dendrimers and conjugation of arginine to surface groups was confirmed by ...
Fatehi D - - 2014
Diagnosis of glioblastoma multiform (GBM) with MRI lacks molecular information and requires a biopsy for pathologic confirmation. The EGFRvIII, is a constitutively active mutant of the EGF receptor, identified in a high percentage of brain cancers and associated with increased invasiveness and resistance, making it a good target to improve ...
Kumar Brijesh - - 2014
We report the synthesis of high quality single crystalline ZnO nanowall networks (NNs) using ammonia solution etching of a ZnO nanowire-nanowall heterojunction (NNH) structure. Synchrotron X-ray diffraction revealed that the full-width-at-half-maximum of the ZnO (0002) peak in the ZnO NN sample was much narrower than that of the ZnO NNH ...
Hu Alice - - 2014
We report a facile two-step methodology; electrospinning followed by high temperature treatment, to produce manganese oxide-based nanofibers with well-controlled nanoscale architectures. Electrospinning of manganese acetate-based solution (MnOx precursor) has been utilized to fabricate meso-porous manganese oxide nanofibers. These fibers have diameters of about 200-300 nm and fiber mats have been ...
Lorenz Matthias M Organic and Biological Mass Spectrometry Group, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6131, - - 2014
Laser ablation provides for the possibility of sampling a large variety of surfaces with high spatial resolution. This type of sampling when employed in conjunction with liquid capture followed by nanoelectrospray ionization provides the opportunity for sensitive and prolonged interrogation of samples by mass spectrometry as well as the ability ...
Vijay Darshan D D National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, - - 2014
Isomeric cationic amphiphiles differing only in the orientation of the linker group have been demonstrated to possess dramatically changed gene transfer efficacies. Studies aimed at understanding structure-stability correlations of such isomeric cationic amphiphiles at the molecular level are yet to be undertaken. Such studies may throw significant new insights into ...
Korobushkin Daniil I DI A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninsky prospect, Moscow, 119071, - - 2014
Stable isotope analysis (SIA) is used widely for reconstructing trophic links of vertebrate and invertebrate animals. Soil macrofauna form a substantial food source for a range of predators including amphibians, reptiles, birds and mammals. SIA-based estimations of their trophic niches require knowledge on the full range of isotopic signatures of ...
Groenewold Gary S GS Idaho National Laboratory, 2351 North Boulevard, Idaho Falls, ID, 83415-2208, - - 2014
New approaches for forming anions are sought that have strong abundance and no isobaric overlap, attributes that are compatible with the measurement of isotope ratios. Fluoroanions are particularly attractive because fluorine is monoisotopic, and thus will not have overlapping isobars with the isotope of interest. Since many elements do not ...
Qi Peng P Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 HaiKe Rd, Pudong, 201203, Shanghai, - - 2014
Seeds of Vaccaria segetalis (Wang-Bu-Liu-Xing in Chinese) are mainly used in traditional Chinese medicine for the treatment of amenorrhea, breast infections, and edema. The study was designed to identify the components and metabolites of Wang-Bu-Liu-Xing. A novel methodology combining an adsorbent-separation strategy with analysis by liquid chromatography/quadrupole time-of-flight tandem mass ...
Ahn Insu I Korea Polar Research Institute, Incheon, 406-840, Korea; Department of Earth and Planetary Material Science, Tohoku University, Aramaki, Aoba, Sendai, Miyagi, 980-8578, - - 2014
Cryogenic trapping using molecular sieves is commonly used to collect O2 extracted from silicates for (17) O/(16) O and (18) O/(16) O analyses. However, gases which interfere with (17) O/(16) O analysis, notably NF3 , are also trapped and their removal is essential for accurate direct measurement of the (17) ...
Paine Martin R L MR ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, School of Chemistry, University of Wollongong, Wollongong, NSW, 2522, - - 2014
The worldwide generation of plastic electronic waste (e-waste) is reaching epic proportions. The presence of toxic brominated flame retardants (BFRs) within these materials limits their ability to be recycled, resulting in large amounts of e-waste reaching landfills. Liquid extraction surface analysis mass spectrometry (LESA-MS) employing a chip-based nanoelectrospray coupled to ...
Rondeau David D Institut d'Electronique et de Télécommunication de Rennes (IETR UMR CNRS 6164), Université de Rennes 1, Campus de Beaulieu, 263 Avenue du General Leclerc, 35042, Rennes Cedex, France; Université de Bretagne Occidentale, Département de Chimie, 6 avenue le Gorgeu, 29238, Brest Cedex 03, - - 2014
The internal energy deposition in ions that cross the desolvation region of an electrospray ionization (ESI) source affects the mass spectra that are obtained using in-source collision-induced dissociation (CID) or in tandem mass spectrometry (MS/MS) mode. It is thus important to evaluate the internal energy distributions of the ions in ...
Gallagher Richard R Oncology iMed DMPK, AstraZeneca UK Ltd., Alderley Park, Macclesfield, Cheshire, SK10 4TG, - - 2014
Improvements in the design of low-flow highly sensitive chromatographic ion source interfaces allow the detection and characterisation of drugs and metabolites from smaller sample volumes. This in turn improves the ethical treatment of animals by reducing both the number of animals needed and the blood sampling volumes required. A new ...
Pangavhane Sachinkumar Dagurao SD Department of Chemistry (A14/107), Faculty of Science, Masaryk University, Kamenice 753/5, Bohunice, 625 00, Brno, Czech - - 2014
Rare earth-doped sulphide glasses in the Ga-Ge-Sb-S system present radiative emissions from the visible to the middle infrared range (mid-IR) range, which are of interest for a variety of applications including (bio)-chemical optical sensing, light detection, and military counter-measures. The aim of this work was to reveal structural motifs present ...
Su Lijuan L Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260, - - 2014
Monitoring the concentrations of pharmaceuticals and personal care products (PPCPs) in wastewater is an integral step toward understanding the fate of these contaminants in wastewater treatment plants (WWTPs). This paper aims to develop a method that allows for the simultaneous analysis of multiple classes of PPCPs that can be used ...
Tomlinson G G Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), CH-8903, Birmensdorf, - - 2014
The use of stable nitrogen (N) isotope ratios (δ(15) N values) in dendroecological studies is often preceded by an extraction procedure using organic solvents to remove mobile N compounds from tree-rings. Although these mobile N compounds may be capable of distorting potential environmental signals in the tree-ring δ(15) N values, ...
Petrizzo Daniel A DA Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, Los Angeles, CA, 90095-1567, - - 2014
Rapid development of the CO2 'clumped-isotope' temperature proxy (Δ47 ) has involved both resource- and labor-intensive analytical methods. We report strategies for measuring Δ47 on a conventional mass spectrometer, with the usual CO2 set of three Faraday collectors while reducing the time devoted to standardization with temperature-equilibrated CO2 . We ...
Piper Thomas T German Sport University Cologne, Center for Preventive Doping Research - Institute of Biochemistry, Am Sportpark Müngersdorf 6, 50933, Köln, - - 2014
AICAR (5-aminoimidazole-4-carboxamide 1β-D-ribofuranoside) is prohibited in sport according to rules established by the World Anti-Doping Agency. Doping control laboratories identify samples where AICAR abuse is suspected by measuring its urinary concentration and comparing the observed level with naturally occurring concentrations. As the inter-individual variance of urinary AICAR concentrations is large, ...
Hu Zhe-Yi ZY University of Tennessee Health Science Center, College of Pharmacy, Department of Clinical Pharmacy, Memphis, TN, 38163, - - 2014
Clopidogrel (CLO) is a prodrug used to prevent ischemic events in patients undergoing percutaneous coronary intervention or with myocardial infarction. A previous study found ethyl clopidogrel (ECLO) is formed by transesterification of CLO when incubated with alcohol in human liver microsomes. We hypothesize that ECLO will be subject to further ...
El-Baba Tarick J TJ Department of Chemistry, Wayne State University, Detroit, MI, 48202, - - 2014
New inlet and vacuum ionization methods provide advantages of specificity, simplicity and speed for the analysis of synthetic polymers and polymer additives directly from surfaces such as fibers using mass spectrometry (MS) on different commercial mass spectrometers (Waters SYNAPT G2, Thermo LTQ Velos). We compare inlet ionization methods with the ...
Liao Debra D Department of Drug Metabolism and Pharmacokinetics, Takeda Pharmaceuticals International Co., 40 Landsdowne St., Cambridge, MA, 02139, - - 2014
Stepwise preparation of calibration standards and quality controls (QCs) is one of the most routine and laborious steps in bioanalysis. An alternative non-contact dispenser using low picoliter digitized dispensing technology is evaluated for its application in non-stepwise preparation of calibration curve and QCs in bioanalysis. Fluorescein was initially used to ...
Kahn Kevin K Carolina Headache Institute, 103 Market St, Chapel Hill, NC, 27516, USA, - - 2014
"Do I have a tumor?" This is a question in every person's mind when first confronted with a new-onset headache, a question that causes considerable anxiety among patients, leading them to seek medical evaluation. This publication reviews the current literature with respect to the epidemiology, pathophysiology presentation, and treatment of ...
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