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Fang Liu et al.
The Journal of chemical physics, 141(23), 234312-234312 (2014-12-22)
Ozonolysis of alkenes, a principle non-photolytic source of atmospheric OH radicals, proceeds through unimolecular decay of energized carbonyl oxide intermediates, known as Criegee intermediates. In this work, cold dimethyl-substituted Criegee intermediates are vibrationally activated in the CH stretch overtone region
King Lam Hui et al.
Molecular biology of the cell, 26(4), 685-695 (2014-12-19)
T-cells are critical for the adaptive immune response in the body. The binding of the T-cell receptor (TCR) with antigen on the surface of antigen-presenting cells leads to cell spreading and signaling activation. The underlying mechanism of signaling activation is
T P Vinod et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 15(14), 3026-3031 (2014-08-01)
Bottom-up synthesis offers novel routes to obtain nanostructures for nanotechnology applications. Most self-assembly processes are carried out in three dimensions (i.e. solutions); however, the large majority of nanostructure-based devices function in two dimensions (i.e. on surfaces). Accordingly, an essential and
S Quader et al.
Journal of controlled release : official journal of the Controlled Release Society, 188, 67-77 (2014-06-04)
The ubiquitin-proteasome system is central in the regulation of cellular proteins controlling cell cycle progression and apoptosis, drawing much interest for developing effective targeted cancer therapies. Herein, we developed a novel pH-responsive polymeric-micelle-based carrier system to effectively deliver the proteasome
Diana Guzman-Villanueva et al.
International journal of pharmaceutics, 473(1-2), 579-590 (2014-07-27)
The RNA interference (RNAi) constitutes a conservative mechanism in eukaryotic cells that induces silencing of target genes. In mammalians, the RNAi is triggered by siRNA (small interfering RNA) molecules. Due to its potential in silencing specific genes, the siRNA has
Yunpeng Huang et al.
Nanoscale, 6(18), 10673-10679 (2014-08-05)
In this work, we report the fabrication of low crystalline, few-layered MoS₂ nanosheet-coated electrospun SnO₂ nanotube (MoS₂/SnO₂) heterostructures with three-dimensional configurations by electrospinning combined with a one-step solvothermal approach. The morphologies and compositions of the as-prepared hybrid nanotubes were characterized
Sridhar Chinthakindi et al.
Journal of chromatography. A, 1423, 54-62 (2015-11-12)
Present study aimed at graphene surface modification to achieve selective analyte binding in dispersive solid phase extraction. Magnetic graphene - polystyrene sulfonic acid (MG-PSS) cation exchange nano-composite was prepared by non-covalent wrapping method. Composite was characterized by FT-IR and zeta
Yunpeng Huang et al.
Nanoscale, 7(44), 18595-18602 (2015-10-23)
Exploration of high-efficiency Pt-free electrochemical catalysts for hydrogen evolution reaction (HER) is considered as a great challenge for the development of sustainable and carbon dioxide free energy conversion systems. In this work, a unique hierarchical nanostructure of few-layered MoSe2 nanosheets
S D Turley et al.
Journal of lipid research, 19(7), 924-928 (1978-09-01)
A review of the 3 alpha-hydroxysteroid dehydrogenase method for determining the concentration of total bile acids in bile is described. The optimum conditions for the assay were established with respect to pH, temperature, incubation time, amount of NAD+, and units
Xiaolian Sun et al.
ACS nano, 8(8), 8438-8446 (2014-07-16)
Using positron emission tomography (PET) imaging to monitor and quantitatively analyze the delivery and localization of Au nanomaterials (NMs), a widely used photothermal agent, is essential to optimize therapeutic protocols to achieve individualized medicine and avoid side effects. Coupling radiometals
Tomáš Etrych et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 58, 1-12 (2014-03-19)
In this study, we describe the synthesis, physico-chemical characterisation and results of the in vitro and in vivo evaluation of the biological behaviour of N-(2-hydroxypropyl)methacrylamide-based (HPMA) copolymer conjugates bearing doxorubicin (DOX) partly bound via a pH-sensitive hydrazone and partly via
Shankha S Acharyya et al.
ACS applied materials & interfaces, 6(16), 14451-14459 (2014-08-02)
Three-dimensional (3D) raspberry-like CuCr2O4 spinel nanoparticles were prepared hydrothermally in the presence of cationic surfactant, cetyltrimethylammonium bromide (CTAB). Detailed characterization of the material was carried out by X-ray diffraction (XRD), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), X-ray photoelectron spectroscopy (XPS)
Nirmalya Bandyopadhyay et al.
European journal of medicinal chemistry, 89, 59-66 (2014-12-03)
The title monomeric Pd(II) compound, [Pd(L)(Cl)], was synthesized in moderate yield out of the reaction of equimolar proportion of Na2[PdCl4] and 3-[(5-bromo-2-hydroxy-benzylidene)-hydrazono]-butan-2-one oxime (LH) in tetrahydrofuran milieu. LH is a 1:1 Schiff-base condensate of 2,3-butanedionemonoxime monohydrazone and 5-bromosalicylaldehyde. [Pd(L)(Cl)] has
James Townsend et al.
ACS nano, 8(7), 6970-6978 (2014-06-21)
We report the fabrication of flexible chains of ferromagnetic Ni nanoparticles that possess the ability to adapt other than the typically observed rigid (nearly) straight configurations in the absence of an external magnetic field. The dynamic mobility of the ferromagnetic
Sobhi M Gomha et al.
Chemical biology & drug design, 86(5), 1292-1303 (2015-06-03)
Type 2 diabetes mellitus is a vast growing progressive disease that almost affects one person among every twelve globally. Regardless the availability of wide variety of oral hypoglycemics, only one-third of patients achieves proper glycemic control. With the advantage of
Hong Miao et al.
Nanoscale, 7(45), 19066-19072 (2015-10-31)
Herein, papain-functionalized Cu nanoclusters (CuNCs@Papain) were originally synthesized in aqueous solution together with a quantum yield of 14.3%, and showed obviously red fluorescence at 620 nm. Meanwhile, their corresponding fluorescence mechanism was fully elucidated by fluorescence spectroscopy, HR-TEM, FTIR spectroscopy
Wei Feng et al.
Scientific reports, 5, 17422-17422 (2015-12-04)
Photothermal cancer therapy has attracted considerable interest for cancer treatment in recent years, but the effective photothermal agents remain to be explored before this strategy can be applied clinically. In this study, we therefore develop flower-like molybdenum disulfide (MoS2) nanoflakes
Synthesis of Au, Ag and Au-Ag alloy nanoparticles in aqueous polymer solution.
Pal A, et al.
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 302(1), 51-57 (2007)
Jian Wang et al.
Nanoscale research letters, 10(1), 461-461 (2015-12-03)
Zn-doped NiO two-dimensional grainy films on glass substrates are shown to be an ammonia-sensing material with excellent comprehensive performance, which could real-time detect and monitor ammonia (NH3) in the surrounding environment. The morphology and structure analysis indicated that the as-fabricated
Peihong Deng et al.
Food chemistry, 180, 156-163 (2015-03-15)
The graphene-polyvinylpyrrolidone composite film modified acetylene black paste electrode (GR-PVP/ABPE) was fabricated and used to determine vanillin. In 0.1M H3PO4 solution, the oxidation peak current of vanillin increased significantly at GR-PVP/ABPE compared with bare ABPE, PVP/ABPE and GR/ABPE. The oxidation
G M Murphy et al.
Journal of clinical pathology, 23(7), 594-598 (1970-10-01)
The enzymatic technique using 3alpha-hydroxysteroid dehydrogenase for determining bile acids in blood has been modified by measuring the reduced nicotinamide adenine dinucleotide fluorimetrically. The increased sensitivity attained enables the concentration of total bile acids in serum to be estimated using
Rodolfo Cruz-Silva et al.
ACS nano, 8(6), 5959-5967 (2014-05-07)
Graphene oxide (GO) has recently become an attractive building block for fabricating graphene-based functional materials. GO films and fibers have been prepared mainly by vacuum filtration and wet spinning. These materials exhibit relatively high Young's moduli but low toughness and
Amr A Abdeen et al.
Tissue engineering. Part A, 20(19-20), 2737-2745 (2014-04-08)
The secretion of trophic factors that promote angiogenesis from mesenchymal stem cells (MSCs) is a promising cell-based therapeutic treatment. However, clinical efficacy has proved variable, likely on account of ill-defined cell delivery formulations and the inherent complexity of cellular secretion.
Tetsu Yonezawa et al.
Physical chemistry chemical physics : PCCP, 17(48), 32511-32516 (2015-11-26)
Metallic copper fine particles used for electro conductive pastes were prepared by the chemical reduction of cupric oxide microparticles in the presence of gelatin. After reduction, the fine particles were collected by decantation with pH control and washing, followed by
Casandra R Cox et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(39), 14057-14061 (2014-09-17)
Direct solar-to-fuels conversion can be achieved by coupling a photovoltaic device with water-splitting catalysts. We demonstrate that a solar-to-fuels efficiency (SFE) > 10% can be achieved with nonprecious, low-cost, and commercially ready materials. We present a systems design of a
Rui Gusmão et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(46), 16474-16478 (2015-10-08)
Fluorographane (C1 Hx F1-x+δ )n is a new member of the graphene family that exhibits hydrophobicity and a large band gap that is tunable based on the level of fluorination. Herein, sensing and energy applications of fluorographane are reported. The
Sajal Shrivastava et al.
Nanoscale, 7(46), 19663-19672 (2015-11-11)
Although real-time label-free fluorescent aptasensors based on nanomaterials are increasingly recognized as a useful strategy for the detection of target biomolecules with high fidelity, the lack of an imaging-based quantitative measurement platform limits their implementation with biological samples. Here we
K Pavić et al.
European journal of medicinal chemistry, 86, 502-514 (2014-09-10)
Novel primaquine semicarbazides 7a-l and ureas 9a-g with modified benzhydryl, trityl, phenyl or hydroxyalkyl substituents were prepared and evaluated for cytostatic and antioxidative activities. Two synthetic approaches for preparation of the title semicarbazides were applied, both having certain advantages. In
Qingtao Meng et al.
Organic & biomolecular chemistry, 13(10), 2918-2926 (2015-01-09)
Chemosensors play important roles in cation and anion recognition in biological, industrial, and environmental processes. Although many efforts have been made to develop artificial fluorescent receptors for Cu(2+) and S(2-), their applications in the detection in bulk solutions are limited.
Xin Tang et al.
PLoS computational biology, 10(6), e1003631-e1003631 (2014-06-06)
Traction forces exerted by adherent cells on their microenvironment can mediate many critical cellular functions. Accurate quantification of these forces is essential for mechanistic understanding of mechanotransduction. However, most existing methods of quantifying cellular forces are limited to single cells
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