keyword
MENU ▼
Read by QxMD icon Read
search

thermo activated

keyword
https://www.readbyqxmd.com/read/28937167/an-unsaturated-metal-site-promoted-approach-to-construct-strongly-coupled-noble-metal-hnb3o8-nanosheets-for-efficient-thermo-photo-catalytic-reduction
#1
Lijuan Shen, Yuzhou Xia, Sen Lin, Shijing Liang, Ling Wu
Creating two-dimensional (2D) crystal-metal heterostructures with an ultrathin thickness has spurred increasing research endeavors in catalysis because of its fascinating opportunities in tuning the electronic state at the surface and enhancing the chemical reactivity. Here we report a novel and facile Nb(4+)-assisted strategy for the in situ growth of highly dispersed Pd nanoparticles (NPs) on monolayer HNb3O8 nanosheets (HNb3O8 NS) constituting a 2D Pd/HNb3O8 NS heterostructure composite without using extra reducing agents and stabilizing agents...
September 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28933847/preparation-and-characterization-of-mucoadhesive-nanoparticles-for-enhancing-cellular-uptake-of-coenzyme-q10
#2
Ji-Soo Lee, Ji Woon Suh, Eun Suh Kim, Hyeon Gyu Lee
The mucoadhesive nanoparticles (NPs) for oral delivery of coenzyme Q10 (CoQ10) were prepared using natural mucoadhesive polysaccharides, chitosan (CS) and dextran sulfate sodium salt (DS) in order to improve the solubility, cellular uptake, thermo- and photo-stability of CoQ10. CoQ10-loaded NPs were prepared in the range of 340-450 nm with an entrapment efficiency of 60-98%. The mucoadhesiveness and cellular uptake of NPs were evaluated by measuring the amount of mucin adsorbed on NPs and CoQ10 absorbed in Caco-2 cells, respectively...
September 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28930445/thermo-responsive-and-active-functional-fiber-mats-for-cultured-cell-recovery
#3
Wilaiporn Graisuwan, Songchan Puthong, Hui Zhao, Suda Kiatkamjornwong, Patrick Theato, Voravee P Hoven
Thermo-responsive and active functional fiber mats were prepared from random copolymer of poly(pentafluorophenyl acrylate-co-N-isopropylacrylamide) (P(PFPA-co-NIPAM)), which was synthesized by a controlled radical polymerization process based on reversible addition-fragmentation chain transfer (RAFT). As reactive sites, pentafluorophenyl ester (PFP) groups were incorporated in the copolymer to allow for a multiple post-polymerization modification. UV-crosslinkable moieties were first introduced by partially reacting PFP groups in the copolymer with ortho-nitrobenzyl (ONB)-protected diamine...
September 20, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28920894/electro-thermal-equivalent-3d-finite-element-model-of-a-single-neuron
#4
I Cinelli, M Destrade, M Duffy, P McHugh
OBJECTIVE: We propose a novel approach for modelling the inter-dependence of electrical and mechanical phenomena in nervous cells, by using electro-thermal equivalences in finite element (FE) analysis so that existing thermo-mechanical tools can be applied. METHODS: First, the equivalence between electrical and thermal properties of the nerve materials is established, and results of a pure heat conduction analysis performed in Abaqus CAE Software 6.13-3 are validated with analytical solutions for a range of steady and transient conditions...
September 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28920603/controlling-cation-segregation-in-perovskite-based-electrodes-for-high-electro-catalytic-activity-and-durability
#5
REVIEW
Yifeng Li, Wenqiang Zhang, Yun Zheng, Jing Chen, Bo Yu, Yan Chen, Meilin Liu
Solid oxide cell (SOC) based energy conversion systems have the potential to become the cleanest and most efficient systems for reversible conversion between electricity and chemical fuels due to their high efficiency, low emission, and excellent fuel flexibility. Broad implementation of this technology is however hindered by the lack of high-performance electrode materials. While many perovskite-based materials have shown remarkable promise as electrodes for SOCs, cation enrichment or segregation near the surface or interfaces is often observed, which greatly impacts not only electrode kinetics but also their durability and operational lifespan...
September 18, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28920439/multi-material-3d-printing-of-graphene-based-electrodes-for-electrochemical-energy-storage-using-thermo-responsive-inks
#6
Victoria García Rocha, Esther Garcia-Tunon, Cristina Botas, Foivos Markoulidis, Ezra Feilden, Eleonora D'Elia, Na Ni, Milo Sebastian Peter Shaffer, Eduardo Saiz
The current lifestyles, increasing population and limited resources result in energy research being at the forefront of worldwide grand challenges, increasing the demand for sustainable and more efficient energy devices. In this context, Additive Manufacturing brings the possibility of making electrodes and electrical energy storage (EES) devices in any desired 3D shape and dimensions, while preserving the multifunctional properties of the active materials in terms of surface area and conductivity. This paves the way to optimized and more efficient designs for energy devices...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28920390/-advance-of-heterologous-expression-study-of-eukaryote-origin-laccases
#7
Na Ning, Huijun Tan, Xinxin Sun, Jinfeng Ni
Laccases are enzymes belonging to the group of multi-copper oxidases. These enzymes are widely distributed in insects, plants, fungi and bacteria. In general, laccases can oxidize an exceptionally high number of substrates, so they have broad applications in textile, pulp, food and the degradation of lignin. However, low yield, low activity and thermo-instability of laccase in nature limit the application of laccase. High efficient heterologous expression of the protein is an effective way for solving this problem...
April 25, 2017: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
https://www.readbyqxmd.com/read/28919927/characterization-of-a-heat-tolerant-chlorella-sp-gd-mutant-with-enhanced-photosynthetic-co2-fixation-efficiency-and-its-implication-as-lactic-acid-fermentation-feedstock
#8
Tse-Min Lee, Yu-Fei Tseng, Chieh-Lun Cheng, Yi-Chuan Chen, Chih-Sheng Lin, Hsiang-Yen Su, Te-Jin Chow, Chun-Yen Chen, Jo-Shu Chang
BACKGROUND: Fermentative production of lactic acid from algae-based carbohydrates devoid of lignin has attracted great attention for its potential as a suitable alternative substrate compared to lignocellulosic biomass. RESULTS: A Chlorella sp. GD mutant with enhanced thermo-tolerance was obtained by mutagenesis using N-methyl-N'-nitro-N-nitrosoguanidine to overcome outdoor high-temperature inhibition and it was used as a feedstock for fermentative lactic acid production...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28919530/coproduction-of-protease-and-mannanase-from-bacillus-nealsonii-pn-11-in-solid-state-fermentation-and-their-combined-application-as-detergent-additives
#9
Aditi David, Aditya Kumar, Steffy Angural, Deepak Kumar, Neena Puri, Naveen Gupta
Bacillus nealsonii PN-11 produces thermo-alkalistable mannanase and protease active in wide temperature and pH range. Optimization of coproduction of protease and mannanase from this strain and application of cocktail of these enzymes as detergent additives were studied. On optimization mannanase yield of 834Ug(-1) (11.12 fold increase) and protease yield of 70Ug(-1) (4.7 fold increase) could be obtained in a single fermentation. Purification and characterization of mannanase have been done earlier and protease was done during this study and has a molecular mass of 48kDa...
September 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28916302/high-pressure-tolerance-of-earthworm-fibrinolytic-and-digestive-enzymes
#10
Shin-Ichi Akazawa, Haruka Tokuyama, Shunsuke Sato, Toshinori Watanabe, Yosuke Shida, Wataru Ogasawara
Earthworms contain several digestive and therapeutic enzymes that are beneficial to our health and useful for biomass utilization. Specifically, earthworms contain potent fibrinolytic enzymes called lumbrokinases, which are highly stable even at room temperature and remain active in dried earthworm powder. However, the high-temperature sterilization method leads to the inactivation of enzymes. Therefore, we investigated the effect of high-pressure treatment (HPT) (from 0.1 MPa to 500 MPa at 25°C and 50°C) on the enzymatic activity of lumbrokinase (LK), α-amylase (AMY), endoglucanase (EG), β-glucosidase (BGL), and lipase (LP) of the earthworm Eisenia fetida, Waki strain, and its sterilization ability in producing dietary supplement...
September 12, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28914306/enhanced-intermediate-temperature-co2-splitting-using-nonstoichiometric-ceria-and-ceria-zirconia
#11
Zhenlong Zhao, Mruthunjaya Uddi, Nikolai Tsvetkov, Bilge Yildiz, Ahmed F Ghoniem
CO2 splitting via thermo-chemical or reactive redox has emerged as a novel and promising carbon-neutral energy solution. Its performance depends critically on the properties of the oxygen carriers (OC). Ceria is recognized as one of the most promising OC candidates, because of its fast chemistry, high ionic diffusivity, and large oxygen storage capacity. The fundamental surface ion-incorporation pathways, along with the role of surface defects and the adsorbates remain largely unknown. This study presents a detailed kinetics study of CO2 splitting using CeO2 and Ce0...
September 15, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28900235/neural-correlates-of-ambient-thermal-sensation-an-fmri-study
#12
Hajime Oi, Teruo Hashimoto, Takayuki Nozawa, Akitake Kanno, Natasha Kawata, Kanan Hirano, Yuki Yamamoto, Motoaki Sugiura, Ryuta Kawashima
An increasing number of biometeorological and psychological studies have demonstrated the importance and complexity of the processes involved in environmental thermal perception in humans. However, extant functional imaging data on thermal perception have yet to fully reveal the neural mechanisms underlying these processes because most studies were performed using local thermal stimulation and did not dissociate thermal sensation from comfort. Thus, for the first time, the present study employed functional magnetic resonance imaging (fMRI) and manipulated ambient temperature during brain measurement to independently explore the neural correlates of thermal sensation and comfort...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899487/discovery-cloning-and-characterisation-of-proline-specific-prolyl-endopeptidase-a-gluten-degrading-thermo-stable-enzyme-from-sphaerobacter-thermophiles
#13
Radhakrishna Shetty, Mike Vestergaard, Flemming Jessen, Per Hägglund, Verena Knorr, Peter Koehler, H S Prakash, Timothy John Hobley
Gluten free products have emerged during the last decades, as a result of a growing public concern and technological advancements allowing gluten reduction in food products. One approach is to use gluten degrading enzymes, typically at low or ambient temperatures, whereas many food production processes occur at elevated temperature. We present in this paper, the discovery, cloning and characterisation of a novel recombinant thermostable gluten degrading enzyme, a proline specific prolyl endoprotease (PEP) from Sphaerobacter thermophiles...
December 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28892754/metal-based-biologically-active-compounds-design-synthesis-dna-binding-and-antidiabetic-activity-of-6-methyl-3-formyl-chromone-derived-hydrazones-and-their-metal-ii-complexes
#14
Jessica Elizabeth Philip, Muhammad Shahid, M R Prathapachandra Kurup, Mohanan Puzhavoorparambil Velayudhan
Two chromone hydrazone ligands HL1 and HL2 were synthesized and characterized by elemental analyses, IR, (1)H NMR &(13)C NMR, electronic absorption and mass spectra. The reactions of the chromone hydrazones with transition metals such as Ni, Cu, and Zn (II) salts of acetate afforded mononuclear metal complexes. Characterization and structure elucidation of the prepared chromone hydrazone metal (II) complexes were done by elemental, IR, electronic, EPR spectra and thermo gravimetric analyses as well as conductivity and magnetic susceptibility measurements...
September 5, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28890985/size-dependent-abnormal-thermo-enhanced-luminescence-of-ytterbium-doped-nanoparticles
#15
Xiangshui Cui, Yao Cheng, Hang Lin, Feng Huang, Qingping Wu, Yuansheng Wang
Thermal quenching above 300 K is widely expected in photoluminescence. Luminescence quenching is usually ascribed to the non-radiative relaxation of excited electrons to the ground state of the activators, during which a high temperature always plays a role in pushing the excited electrons towards the quenching channels, leading to thermal quenching. For the lanthanide-doped nanoparticles, however, there is a special luminescence quenching channel that does not exist in their bulk counterparts, i.e., energy migration-induced surface quenching...
September 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28890781/thermo-responsive-cell-culture-carrier-effects-on-macrophage-functionality-and-detachment-efficiency
#16
Knut Rennert, Mirko Nitschke, Maria Wallert, Natalie Keune, Martin Raasch, Stefan Lorkowski, Alexander S Mosig
Harvesting cultivated macrophages for tissue engineering purposes by enzymatic digestion of cell adhesion molecules can potentially result in unintended activation, altered function, or behavior of these cells. Thermo-responsive polymer is a promising tool that allows for gentle macrophage detachment without artificial activation prior to subculture within engineered tissue constructs. We therefore characterized different species of thermo-responsive polymers for their suitability as cell substrate and to mediate gentle macrophage detachment by temperature shift...
January 2017: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/28888067/injectable-thermosensitive-alginate-%C3%AE-tricalcium-phosphate-aspirin-hydrogels-for-bone-augmentation
#17
Xiaoqian Fang, Lei Lei, Ting Jiang, Ying Chen, Yunqing Kang
In this study, an injectable and thermo-sensitive alginate/β-tricalcium phosphate hydrogel (TSAH/β-TCP) was prepared for aspirin release to a bone defect. Aspirin was dissolved into a mixture of poly(N-isopropylacrylamide) (PNIPAAm), an aminated alginate-g-PNIPAAm co-polymer, and β-TCP powders. Scanning electron microscopy showed that TSAH/β-TCP had an interconnected porous microstructure with a porosity of 86.78%. The cross-linked hydrogel released approximately 40% of the aspirin in the first 3 days and then slowly released the remainder...
September 9, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28880072/novel-smart-microreactors-equipped-with-responsive-catalytic-nanoparticles-on-microchannels
#18
Lei Zhang, Zhuang Liu, Lu-Yue Liu, Xiao-Jie Ju, Wei Wang, Rui Xie, Liang-Yin Chu
Nowadays efficient and reliable control of highly exothermic reactions to effectively prevent overheating or even explosions still remains a challenging task, although newly developed microreactor technology has shown promise. Here, we report a novel smart microreactor system equipped with responsive catalytic nanoparticles on microchannels for self-regulated control over highly exothermic reactions by responding to the reaction-generated heat. On the basis of shrinking/swelling behaviors of polymeric networks in the responsive catalytic nanoparticles, the smart microreactor could respond to the change of reaction temperature to tune the catalysis activity of catalytic particles in a thermo-feedback process...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28863814/multiple-mechanisms-of-regulation-of-transient-receptor-potential-ion-channels-by-cholesterol
#19
Sara L Morales-Lázaro, Tamara Rosenbaum
The transient receptor potential (TRP) family of ion channels is constituted by several nonselective cation channels that are activated by diverse stimuli and that function as polymodal receptors. TRP ion channels are expressed in neural and nonneural tissues where they play important roles in cell physiology. The activation of these ion channels is achieved through changes in temperature, osmolarity, voltage, pH, pressure, and by some natural or synthetic chemical compounds that directly bind to these proteins to regulate their activity...
2017: Current Topics in Membranes
https://www.readbyqxmd.com/read/28862294/design-preparation-and-characterization-of-moo3h-functionalized-fe3o4-sio2-magnetic-nanocatalyst-and-application-for-the-one-pot-multicomponent-reactions
#20
Mahtab Kiani, Mehrnoosh Hendijani, Mohammad Mohammadipour, Ali Zamanian
Molybdic acid-functionalized silica-based Fe3O4 nanoparticles (Fe3O4@SiO2-MoO3H) are found to be a powerful and magnetically recyclable nanocatalyst. The morphology and structure of this nanocatalyst were investigated by Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), thermo gravimetric analyses (TGA), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) techniques...
September 2017: Acta Chimica Slovenica
keyword
keyword
79022
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"