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Showing 1-30 of 324 results for "676764" within Papers
Fumiki Yanagawa et al.
Advanced healthcare materials, 4(2), 246-254 (2014-08-15)
Photodegradable hydrogels have emerged as powerful platforms for studying and directing cellular behavior in a spatiotemporally controlled manner. Photodegradable hydrogels have previously been formed by free radical polymerizations, Michael-type addition reactions, and orthogonal click reactions. Here, an ester-activated photocleavable crosslinker
Tomoyuki Yokota et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(47), 14533-14538 (2015-11-11)
We report a fabrication method for flexible and printable thermal sensors based on composites of semicrystalline acrylate polymers and graphite with a high sensitivity of 20 mK and a high-speed response time of less than 100 ms. These devices exhibit
Elodie Alinat et al.
Journal of chromatography. A, 1387, 134-143 (2015-02-24)
Fine characterization of nitrocellulose (NC) remains a challenge, especially in forensic analysis, and a strategy consisting in obtaining representative fingerprints by a separation technique, as for proteins, is of prime interest. In this work, we first established that NCs (especially
Daishun Ling et al.
ACS nano, 8(8), 8027-8039 (2014-08-06)
Hepatocellular carcinoma (HCC) has one of the worst prognoses for survival as it is poorly responsive to both conventional chemotherapy and mechanism-directed therapy. This results from a lack of therapeutic concentration in the tumor tissue coupled with the highly toxic
Jacqueline M Morais et al.
International journal of pharmaceutics, 475(1-2), 393-400 (2014-09-03)
This study reports the release properties of the poorly water-soluble active vitamin E acetate from oil/water nanoemulsions containing canola oil, CremophorRH40(®) and Span80(®) prepared using a low energy emulsification method (EPI process). Drug release was measured via dialysis sac and
Juan Carlos Ramos et al.
Organic letters, 15(8), 1982-1985 (2013-04-20)
Two types of trans-THF cores, present in acetogenins, have been synthesized by an intramolecular iodoetherification reaction. The starting alkenol was obtained in a few steps from a chiral cis-diol resulting from microbial oxidation of bromobenzene. The cyclization gave complete stereoselectivity
Supriya Ravichandran et al.
Nanoscale, 7(47), 20042-20054 (2015-11-17)
The increasing use of nanoparticles (NPs) in technological applications and in commercial products has escalated environmental health and safety concerns. The detection of NPs in the environment and in biological systems is challenged by limitations associated with commonly used analytical
Dawei Qi et al.
Journal of chromatography. A, 1374, 273-277 (2014-12-06)
In this study, a novel fully automated on-line coupled liquid chromatography-gas chromatography (LC-GC) technique was reported and applied for the determination of organochlorine pesticide residues (OCPs) in tobacco and tobacco products. Using a switching valve to isolate the capillary pre-column
Seyedsina Moeinzadeh et al.
Tissue engineering. Part A, 21(1-2), 134-146 (2014-07-23)
An attractive approach to reduce the undesired side effects of bone morphogenetic proteins (BMPs) in regenerative medicine is to use osteoinductive peptide sequences derived from BMPs. Although the structure and function of BMPs have been studied extensively, there is limited
Tomáš Řezanka et al.
Phytochemistry, 110, 37-45 (2015-01-08)
This study describes the identification of regioisomers and enantiomers of triacylglycerols of C20 polyunsaturated fatty acids (PUFAs) in the alga Trachydiscus minutus cultivated at different temperatures using reversed- and chiral-phase liquid chromatography-mass spectrometry. The use of the two different phases
Salim Kemal Tuncer et al.
Turkish journal of medical sciences, 45(6), 1251-1255 (2016-01-19)
Urticaria is a vascular skin reaction characterized with papules and plaques. Neopterin is accepted as an immunologic marker and an indicator of activation of the immune system. Homocysteine and asymmetric dimethylarginine (ADMA) are the markers of increased vascular resistance. Alteration
Shun-ichi Funano et al.
The Analyst, 140(5), 1459-1465 (2015-01-20)
A single-step, easy-to-use enzyme immunoassay capillary sensor, composed of functional multilayer coatings, was developed in this study. The coatings were composed of substrate-immobilized hydrophobic coating, hydrogel coating, and soluble coating containing an enzyme-labeled antibody. The response mechanism involved a spontaneous
Direct functionalization of tetrahydrofuran and 1,4-dioxane: nickel-catalyzed oxidative C(sp3)-H arylation.
Dong Liu et al.
Angewandte Chemie (International ed. in English), 52(16), 4453-4456 (2013-03-21)
Lukasz Lamch et al.
Photodiagnosis and photodynamic therapy, 11(4), 570-585 (2014-12-03)
Searching for photodynamic therapy (PDT) - effective nanocarriers which enable a photosensitizer to be selectively delivered to tumor cells with enhanced bioavailability and diminished dark cytotoxicity is of current interest. The main objective of this study is to evaluate newly
Crispin Lichtenberg et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(44), 15797-15805 (2015-09-17)
The reactivity of the all-ferrous FeN heterocubane [Fe4 (Ntrop)4 ] (1) with i) Brønsted acids, ii) σ-donors, iii) σ-donors/π-acceptors, and iv) one-electron oxidants has been investigated (trop = 5H-dibenzo[a,d]cyclo-hepten-5-yl). 1 showed self-re-assembling after reactions with i) and proved surprisingly inert in reactions with ii)
Fanny Widjaja et al.
Journal of the American Society for Mass Spectrometry, 24(4), 469-480 (2013-01-25)
The reactivity of the three distonic isomers of the pyridine radical cation toward tetrahydrofuran is compared in solution and in the gas phase. In solution, the distonic ions were generated by UV photolysis at 300 nm from iodo-precursors in acidic
Antonella Mangraviti et al.
ACS nano, 9(2), 1236-1249 (2015-02-03)
Biodegradable polymeric nanoparticles have the potential to be safer alternatives to viruses for gene delivery; however, their use has been limited by poor efficacy in vivo. In this work, we synthesize and characterize polymeric gene delivery nanoparticles and evaluate their
Pei-Pei Zhang et al.
Journal of Asian natural products research, 15(5), 466-472 (2013-04-26)
One new lignan (7S,8R,7'R,8'R)-7-(3,4-methylenedioxyphenyl)-8,8'-dimethyl-8'-hydroxyl-7'-methoxyl-7'-(3',4'-methylenedioxyphenyl)-tetrahydrofuran (1), one new sesquiterpene 2-hydroxy-11,12-dehydrocalamenene (2), one new natural product erythro-1-(3,4-dimethoxyphenyl)-4-(3,4-methylenedioxyphenyl)-2,3-dimethyl-butane (3), and two known lignans (+)-anwulignan(erythro-1-(4-hydroxy-3-methoxyphenyl)-4-(3,4-methylenedioxyphenyl)-2,3-dimethyl-butane) (4) and ( - )-zuonin-A (5) were isolated from the stems of Schisandra glaucescens Diels. Their structures were elucidated by spectroscopic
Mohammed J Farooqi et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 153, 124-131 (2015-08-25)
Perylene diimide derivatives have attracted initial interest as industrial dyes. Recently, much attention has been focused on their strong π-π stacks resulting from the large PDI aromatic core. These PDI stacks have distinct optical properties, and provide informative models that
H Breithaupt et al.
Journal of chromatography, 230(1), 97-105 (1982-06-11)
A high-performance liquid chromatographic method for the determination of the anti-arrhythmic drug mexiletine in human plasma, urine, and cerebrospinal fluid is described. Following extraction with diethyl ether, mexiletine and the internal standard 4-methylmexiletine were derivatized with 2,4-dinitrofluorobenzene. Analyses were performed
Hyo Jin Kang et al.
Biosensors & bioelectronics, 67, 413-418 (2014-09-15)
Caspase-3 is an apoptotic cysteine protease and its aberrancy is highly implicated to numerous diseases thereby rendering caspase-3 activity as an important disease marker. Most caspase-3 sensors are caspase-3 substrates of which the fluorescence signals are turned on upon catalytic
Igor Otavio Minatel et al.
Journal of medicinal food, 17(10), 1134-1141 (2014-08-28)
Bioactive components in rice vary depending on the variety and growing condition. Fat-soluble components such as γ-oryzanol, tocopherols, tocotrienols, carotenoids, and fatty acids were analyzed in brown, sugary brown, red, and black rice varieties using established high-performance liquid chromatography (HPLC)
Daniel T Bowers et al.
ACS nano, 8(12), 12080-12091 (2014-11-27)
Oxygenation in tissue scaffolds continues to be a limiting factor in regenerative medicine despite efforts to induce neovascularization or to use oxygen-generating materials. Unfortunately, many established methods to measure oxygen concentration, such as using electrodes, require mechanical disturbance of the
Ahlam Alalwiat et al.
The Analyst, 140(22), 7550-7564 (2015-10-16)
A multidimensional mass spectrometry (MS) methodology is introduced for the molecular level characterization of polymer-peptide (or polymer-protein) copolymers that cannot be crystallized or chromatographically purified. It encompasses electrospray ionization (ESI) or matrix-assisted laser desorption ionization (MALDI) coupled with mass analysis
Tomáš Řezanka et al.
Phytochemistry, 104, 95-104 (2014-05-17)
Structured triacylglycerols (TAGs) were isolated from nine cultivated strains of microalgae belonging to different taxonomic groups, i.e. Audouinella eugena, Balbiania investiens, Myrmecia bisecta, Nannochloropsis limnetica, Palmodictyon varium, Phaeodactylum tricornutum, Pseudochantransia sp., Thorea ramosissima, and Trachydiscus minutus. They were separated and
Sonika Batra et al.
Biomedical chromatography : BMC, 28(6), 815-825 (2014-05-28)
Enantiomeric separation of racemic mexiletine and fluoxetine was achieved using three chiral derivatizing reagents (CDRs) based on (S)-naproxen. Diastereomers were synthesized by reaction of mexiletine or fluoxetine with the CDRs and were separated on a C18 column under reversed-phase conditions
Ahmad Aqel et al.
Journal of chromatographic science, 52(3), 201-210 (2013-02-21)
This paper describes the comprehensive fabrication of monolithic materials for use as stationary phases in capillary liquid chromatography. Several columns were synthesized in the confines of 320 µm i.d. fused-silica capillaries by single-step in situ copolymerization of benzyl methacrylate and
Huihui Ti et al.
Food chemistry, 178, 186-194 (2015-02-24)
The phytochemical profile and antioxidant activities of unprocessed and extruded milled fractions of black rice were investigated. Extrusion increased the free phenolics, anthocyanins and oxygen radical absorbance capacity (ORAC) and decreased the bound forms. The total phenolics, anthocyanins and ORAC
P Láng et al.
Journal of pharmaceutical and biomedical analysis, 102, 229-235 (2014-10-12)
The effects of solvents, temperature and humidity on the stability of a former drug candidate obtained from Sanofi (Hungary) were examined by a slurry equilibration method, variable temperature and humidity X-ray powder diffractometry (VT/VH-XRPD) and differential scanning calorimetry (DSC). The
Mathias Devreese et al.
Journal of chromatography. A, 1353, 106-113 (2014-03-25)
A specific and sensitive LC-MS/MS method was developed for quantitative determination of closantel in bovine and ovine colostrum and tank milk. Sample preparation consisted of extracting milk samples with acetonitrile/acetone (80/20, v/v) followed by SPE clean-up with Oasis mixed anion
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