All-fiber optical measurer of mineral oil in water based on three-dimensional fluorescent light spectra

2000 ◽  
Author(s):  
Shuqing Zhang ◽  
Jinshan Shi
Keyword(s):  
Three Dimensional ◽  
Mineral Oil ◽  
Fluorescent Light ◽  
Light Spectra ◽  
Oil In Water ◽  
Fiber Optical ◽  
Water Based

WT-SVD Feature of Three Dimensional Fluorescence Spectra of Mineral Oil

2015 ◽  
Vol 52 (6) ◽  
pp. 063001
Author(s):  
田广军 Tian Guangjun ◽  
杨子臣 Yang Zichen
Keyword(s):  
Fluorescence Spectra ◽  
Three Dimensional ◽  
Mineral Oil

Study on Three-Dimensional Fluorescence Spectra of Oil Concentration in Water

2011 ◽  
Vol 322 ◽  
pp. 144-147
Author(s):  
Yu Tian Wang ◽  
Li Li Yang ◽  
Xin Qiong Lu
Keyword(s):  
Quantitative Analysis ◽  
Fluorescence Intensity ◽  
Fluorescence Spectra ◽  
Three Dimensional ◽  
Measurement Model ◽  
Excitation Wavelength ◽  
Experimental Basis ◽  
Oil In Water ◽  
Oil Concentration ◽  
Fluorescence Spectrometer

According to the Lambert-Beer laws, the fluorescence spectra of oil in water were investigated by measuring excitation-emission matrixes with FS920 fluorescence spectrometer. On the basis of the three-dimensional fluorescence spectra of oil in water, the excitation wavelength of 290nm and emission wavelength of 324nm were chosen for the quantitative analysis of oil in water. The results show that the concentration of oil in water is linearly proportional to the fluorescence intensity in the range of 1ppm-100ppm, and the measurement model of concentration is obtained with the linear correlation coefficient of 0.9993. The artificial samples has also been tested and the results are satisfactory. The recovery is in the range of 92%-106%. The research provides experimental basis for the quantitative analysis of multi-component oil in water.

Three-dimensional analysis on natural convection inside a T-shaped cavity with water-based CNT–aluminum oxide hybrid nanofluid

2019 ◽  
Vol 139 (3) ◽  
pp. 2089-2098 ◽  
Author(s):  
Mohammed A. Almeshaal ◽  
K. Kalidasan ◽  
Faouzi Askri ◽  
R. Velkennedy ◽  
Ali Sulaiman Alsagri ◽  
...  
Keyword(s):  
Natural Convection ◽  
Aluminum Oxide ◽  
Dimensional Analysis ◽  
Three Dimensional ◽  
Hybrid Nanofluid ◽  
Water Based

scholarly journals 3D tracking of extracellular vesicles by holographic fluorescence imaging

2020 ◽  
Vol 6 (45) ◽  
pp. eabc2508
Author(s):  
Matz Liebel ◽  
Jaime Ortega Arroyo ◽  
Vanesa Sanz Beltrán ◽  
Johann Osmond ◽  
Ala Jo ◽  
...  
Keyword(s):  
Extracellular Vesicles ◽  
Single Molecule ◽  
Three Dimensional ◽  
Super Resolution ◽  
Fluorescent Detection ◽  
Live Cells ◽  
Fluorescent Light ◽  
3D Tracking ◽  
Anisotropic Motion ◽  
Lag Times

Fluorescence microscopy is the method of choice in biology for its molecular specificity and super-resolution capabilities. However, it is limited to a narrow z range around one observation plane. Here, we report an imaging approach that recovers the full electric field of fluorescent light with single-molecule sensitivity. We expand the principle of digital holography to fast fluorescent detection by eliminating the need for phase cycling and enable three-dimensional (3D) tracking of individual nanoparticles with an in-plane resolution of 15 nm and a z-range of 8 mm. As a proof-of-concept biological application, we image the 3D motion of extracellular vesicles (EVs) inside live cells. At short time scales (<4 s), we resolve near-isotropic 3D diffusion and directional transport. For longer lag times, we observe a transition toward anisotropic motion with the EVs being transported over long distances in the axial plane while being confined in the horizontal dimension.

scholarly journals Preparation and Characterization of Water-Based Nano-Perfumes

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 981 ◽  
Author(s):  
Małgorzata Miastkowska ◽  
Elwira Lasoń ◽  
Elżbieta Sikora ◽  
Katarzyna Wolińska-Kennard
Keyword(s):  
Droplet Size ◽  
Interfacial Area ◽  
High Energy ◽  
Protective Role ◽  
Food Industries ◽  
Low Viscosity ◽  
Oil In Water ◽  
Water Based

The application of nanoemulsions as a novel delivery system for lipophilic materials, such as essential oils, flavors, and fragrances is one of the growing technologies used in cosmetic, pharmaceutical, and food industries. Their characteristic properties, like small droplet size with high interfacial area, transparent or semi-transparent appearance, low viscosity, and high kinetic stability, make them a perfect vehicle for fragrances, in the perfume industry. They could be a great alternative to water-based perfumes, without alcohol, and solve problems related to the oxidation and low bioavailability of fragrances with other non-alcoholic vehicles of perfumes like pomades or gels. The aim of our study was to develop stable Oil-in-Water (O/W) nanoemulsions that are compatible with selected fragrance compositions, without ethanol, polyols, and ionic surfactants, and to study their physicochemical, microbiological, and dermatological properties. The nano-perfume systems were obtained with a low-energy (Phase Inversion Composition; PIC) and with a high-energy (ultrasound, US) method, taking into account the possibility of moving from the laboratory scale to an industrial scale. The optimized nano-perfume formulations, prepared with different methods, yielded the same physicochemical properties (stability, medium droplet size of the inner phase, polydispersity, viscosity, surface tension, pH, density). Stable systems were obtained with a fragrance composition concentration within 6–15% range. These formulations had a low viscosity and a pH suitable for the skin. Moreover, the obtained results confirmed the protective role of nanoemulsions. The peroxide number measurement (POV) showed that the tested fragrance compositions had a high chemical stability. The results of the microbiological tests confirmed that the obtained products were free of microbiological contamination and were appropriately preserved. The dermatological test results confirmed the safety of the developed preparations.

Numerical Simulation of Synthetic Heat Transfer in Laminar Nanofluid in a Horizontal Pipe

2014 ◽  
Vol 936 ◽  
pp. 409-414
Author(s):  
Mohsen Mirzaei ◽  
Mostafa Jafari Gishin ◽  
Mohammad Abbaspour
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Convective Heat Transfer Coefficient ◽  
Three Dimensional ◽  
Oxide Nanoparticles ◽  
Aluminum Oxide Nanoparticles ◽  
Horizontal Pipe ◽  
Water Based ◽  
Solid Liquid ◽  
Good Agreement

In this study, the effect of solid-liquid volumetric ratio in laminar flow of nanofluid has been investigated numerically. The conservation equations are utilized in three dimensional elliptical forms for laminar and steady flow, and the effects of adding aluminum oxide nanoparticles to water based-fluid are studied. First, the influence of solid-liquid volumetric ratio on the secondary flow vortices, non-dimensional temperature is investigated for a flow with a fixed low Reynolds number and different Grashof numbers in a horizontal pipe. Then, the effect of variation in solid-liquid volumetric ratio on Nusselt number and convective heat transfer coefficient along the pipe is studied. The results of this study are in good agreement with the current literatures.

Microorganisms as a Replacement for Metal Working Fluids

2014 ◽  
Vol 966-967 ◽  
pp. 357-364 ◽  
Author(s):  
Marvin Redetzky ◽  
Andreas Rabenstein ◽  
B. Palmowski ◽  
Ekkard Brinksmeier
Keyword(s):  
Paradigm Shift ◽  
Microbial Growth ◽  
Microbial Contamination ◽  
Mineral Oil ◽  
Metal Working ◽  
Technical Performance ◽  
Cell Counts ◽  
Metalworking Fluid ◽  
Water Based ◽  
Lubrication Properties

Most of the several billion liters of metalworking fluid (MWF) used worldwide and annually are water-based and thus prone to a microbial contamination. The microbial growth leads to a deterioration and therefore to a loss of quality and technical performance. In most cases, biocides, which pose a potential risk to health and environment, are used to reduce the microbial load. To avoid these limitations, the paradigm shift of using microorganisms in a positive way in a manufacturing process as a lubricant is investigated in this paper. Some microorganisms are able to synthesize equivalent MWF components like e.g. fatty acids or sulfur compounds. Due to this fact, it is possible to create a regenerative system on a microbiological basis for the substitution of mineral oil containing MWF components. To demonstrate the lubrication potential of bacteria, preliminary investigations were conducted on a Brugger-tribotester. Against this background, the approach presented here intends to investigate the lubrication properties of special microorganisms and the influence of the microbial cell counts on the lubrication behavior respectively. The results of the tribological tests show that the microbial-suspensions exhibit Brugger-values as high as highly concentrated conventional MWF and indicate the potential to replace these respective components.

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