scholarly journals Correlative Probe and Electron Microscopy CPEM™ – The Novel Technology for 3D Material Surface Analysis

2019 ◽  
Vol 25 (S2) ◽  
pp. 430-431 ◽  
Author(s):  
Jan Neuman ◽  
Zdenek Novacek ◽  
Michal Pavera ◽  
Veronika Novotna
Keyword(s):  
Electron Microscopy ◽  
Surface Analysis ◽  
Material Surface ◽  
The Novel ◽  
Novel Technology

scholarly journals Effect of Hot-Water Blanching Pretreatment on Drying Characteristics and Product Qualities for the Novel Integrated Freeze-Drying of Apple Slices

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Hai-ou Wang ◽  
Qing-quan Fu ◽  
Shou-jiang Chen ◽  
Zhi-chao Hu ◽  
Huan-xiong Xie
Keyword(s):  
Electron Microscopy ◽  
Freeze Drying ◽  
Hot Water ◽  
The Novel ◽  
Rehydration Ratio ◽  
Drying Time ◽  
Drying Characteristics ◽  
Promising Alternative ◽  
Freeze Dried ◽  
Apple Slices

The effect of hot-water blanching (HWB) on drying characteristics and product qualities of dried apple slices with the novel integrated freeze-drying (NIFD) process was investigated by comparing with 3 different FD methods. Compared with the NIFD process without HWB pretreatment (VF-FD), the NIFD process with HWB pretreatment (HWB-VF-FD) resulted in a significantly higher mass loss and more sufficient freezing in vacuum-frozen samples, significantly higher rehydration ratio (RR), higher shrinkage ratio (SR), smaller Vitamin C (VC) content and lower hardness and better apparent shape in freeze-dried samples, and fewer change to the color of the dried or rehydrated samples (p<0.05). Compared with the conventional FD process with HWB pretreatment (HWB-PF-FD), HWB-VF-FD cost significantly less processing time and FD time and obtained significantly higher RR (p<0.05), almost the equivalent SR, VC content, and hardness, and similar appearance in dried samples. The microstructure of apple cell tissues was analyzed by transmission electron microscopy and scanning electron microscopy to interpret the above differences in drying characteristics and product qualities. The results suggested that the NIFD process of apple slices with HWB pretreatment was a promising alternative method to decrease drying time, achieve similar product quality, and simplify the process steps of the conventional FD technology.

Different polar-map patterns using the novel technology for myocardial perfusion imaging (MPI)

2016 ◽  
Vol 32 ◽  
pp. 113
Author(s):  
C. Scabbio ◽  
O. Zoccarato ◽  
C. Marcassa ◽  
D. Lizio ◽  
L. Leva ◽  
...  
Keyword(s):  
Myocardial Perfusion Imaging ◽  
Myocardial Perfusion ◽  
Perfusion Imaging ◽  
The Novel ◽  
Novel Technology ◽  
Polar Map

scholarly journals Luminescence Studies and Judd–Ofelt Analysis on SiO2@LaPO4:Eu@SiO2 Submicro-spheres with Different Size of Intermediate Shells

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiaowei Zhu ◽  
Kuisuo Yang ◽  
Anping Wu ◽  
He Bai ◽  
Jinrong Bao ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Photoelectron Spectroscopy ◽  
Optical Transition ◽  
Dipole Transition ◽  
Rare Earth Ions ◽  
Photoluminescence Intensity ◽  
The Novel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron

Abstract The novel submicro-spheres SiO2@LaPO4:Eu@SiO2 with core-shell-shell structures were prepared by connecting the SiO2 submicro-spheres and the rare earth ions through an organosilane HOOCC6H4N(CONH(CH2)3Si(OCH2CH3)3 (MABA-Si). The as-prepared products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy (IR). It is found that the intermediate shell of the submicro-spheres was composed by LaPO4:Eu nanoparticles with the size of about 4, 5–7, or 15–34 nm. A possible formation mechanism for the SiO2@LaPO4:Eu@SiO2 submicro-spheres has been proposed. The dependence of the photoluminescence intensity on the size of the LaPO4:Eu nanoparticles has been investigated. The intensity ratios of electrical dipole transition 5D0 → 7F2 to magnetic dipole transition 5D0 → 7F1 of Eu3+ ions were increased with decreasing the size of LaPO4:Eu nanoparticles. According to the Judd-Ofelt (J-O) theory, when the size of LaPO4:Eu nanoparticles was about 4, 5–7 and 15–34 nm, the calculated J-O parameter Ω2 (optical transition intensity parameter) was 2.30 × 10−20, 1.80 × 10−20 and 1.20 × 10−20, respectively. The increase of Ω2 indicates that the symmetry of Eu3+ in the LaPO4 lattice was gradually reduced. The photoluminescence intensity of the SiO2@LaPO4:Eu@SiO2 submicro-spheres was unquenched in aqueous solution even after 15 days.

Biomineralization of Electrospun Nano-HA/PHB GTR Membrane

2007 ◽  
Vol 330-332 ◽  
pp. 695-698 ◽  
Author(s):  
Dong Hua Guan ◽  
Chun Peng Huang ◽  
Ji Liu ◽  
Kun Tian ◽  
Lin Niu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Electrospinning Process ◽  
Nanometer Scale ◽  
High Porosity ◽  
The Novel ◽  
Mineral Crystal ◽  
Novel Technology ◽  
Air Jet

Poly 3-hydroxybutyrate (PHB) as a kind of polysaccharides has been proved promising for tissue engineering because of its biocompatibility and biodegradability. But its poor mechanical properties and hydrophilicity limit its application. In order to explore a new useful porch to improve the performance of PHB-based GTR membrane, membrane composed of nano-HA / PHB composite was manufactured through the air/jet electrospinning process which can potentially generate nanometer scale diameter fibers and enlarge surface area of materials while maintaining high porosity. Successively, the biomineralization behavior of the membrane in supersaturated calcification solution (SCS) was studied. The Results of this investigation show that the successfully manufactured porous nano-HA/PHB membrane has high activity in SCS and its ability of inducing the formation of mineral crystal in vitro than that of the unfilled PHB membrane. It can be concluded that the addition of nano-HA and the novel technology could improve the performance of the PHB-based GTR membrane.

Synthesis of a polyacrylamide hydrogel using CO2 at room temperature

2020 ◽  
Vol 98 (2) ◽  
pp. 66-73 ◽  
Author(s):  
Celia Ferrag ◽  
Maryam Abdinejad ◽  
Kagan Kerman
Keyword(s):  
Electron Microscopy ◽  
Photoelectron Spectroscopy ◽  
Value Added ◽  
Ionization Mass ◽  
Self Healing ◽  
The Novel ◽  
Polyacrylamide Hydrogel ◽  
Ambient Conditions ◽  
Novel Approach ◽  
Transmission Electron

Carbon dioxide (CO2) is an environmentally harmful “greenhouse gas” that is present in abundant quantities in the earth’s atmosphere. Thus, the sequestration and conversion of CO2 to value-added organic chemicals is of environmental and economical importance. In this proof-of-concept study, amine groups of acrylamide compounds were found to react with CO2 under ambient conditions to form a polyacrylamide hydrogel. This composite was characterized using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR) and electrospray ionization mass spectrometry (ESI–MS), which confirmed successful synthesis and demonstrated all characteristics representative of a typical hydrogel material. Rheology analyses further proved the formation of the hydrogel, as well as its self-healing nature. The novel approach proposed in this work can potentially be used in the construction of versatile amine-based gel materials for efficient CO2 utilization applications.

scholarly journals The Importance of Complementary Information Provided by Surface Analysis, Electron Microscopy and in situ Characterization of Nanoparticles

2010 ◽  
Vol 16 (S2) ◽  
pp. 408-409 ◽  
Author(s):  
DR Baer ◽  
JE Amonette ◽  
A Dohnalkova ◽  
MH Engelhard ◽  
S Kuchibhatla ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Surface Analysis ◽  
In Situ Characterization ◽  
Complementary Information

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

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