scholarly journals Fabrication of Water Absorbing Nanofiber Meshes toward an Efficient Removal of Excess Water from Kidney Failure Patients

Fibers ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 39 ◽  
Author(s):  
Mirei Tsuge ◽  
Kanoko Takahashi ◽  
Rio Kurimoto ◽  
Ailifeire Fulati ◽  
Koichiro Uto ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Blood Purification ◽  
Sodium Acrylate ◽  
Acid Form ◽  
Efficient Removal ◽  
New Approach ◽  
Sodium Carboxylate ◽  
Excess Water ◽  
Purification System ◽  
Specialized Equipment

Excellent water-absorbing nanofiber meshes were developed as a potential material for removing excess fluids from the blood of chronic renal failure patients toward a wearable blood purification system without requiring specialized equipment. The nanofiber meshes were successfully fabricated from poly(acrylic acid) (PAA) under various applied voltages by appropriately setting the electrospinning conditions. The electrospun PAA nanofibers were thermally crosslinked via heat treatment and then neutralized from their carboxylic acid form (PAA) to a sodium carboxylate form poly(sodium acrylate) (PSA). The PSA nanofiber meshes exhibited a specific surface area 393 times that of the PSA film. The PSA fiber meshes showed a much faster and higher swelling than its corresponding film, owing to the higher capillary forces from the fibers in addition to the water absorption of the PSA gel itself. The proposed PSA fibers have the potential to be utilized in a new approach to remove excess water from the bloodstream without requiring specialized equipment.

Control of Rate of Solute Transport in Newly Developed Portable Agar Gel Blood Purification System

1998 ◽  
Vol 2 (1) ◽  
pp. 67-70
Author(s):  
Akihiro C. Yamashita ◽  
Ryoichi Sakiyama ◽  
Hiroyuki Hamada ◽  
Kakuji J. Tojo
Keyword(s):  
Solute Transport ◽  
Blood Purification ◽  
Agar Gel ◽  
Purification System

A new approach to control and optimize the laser surface heat treatment of materials

2018 ◽  
Vol 262 ◽  
pp. 492-502 ◽  
Author(s):  
Sagar V. Telrandhe ◽  
Jayabalan Bhagyaraj ◽  
Sushil Mishra ◽  
Shyamprasad Karagadde
Keyword(s):  
Heat Treatment ◽  
Surface Heat ◽  
Laser Surface ◽  
New Approach

scholarly journals Magnetic separation-based blood purification: a promising new approach for the removal of disease-causing compounds?

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
I K Herrmann ◽  
A A Schlegel ◽  
R Graf ◽  
W J Stark ◽  
Beatrice Beck-Schimmer
Keyword(s):  
Magnetic Separation ◽  
Blood Purification ◽  
New Approach

On the Influence of a Heat Treat for an Aluminizing Progress Based on Al Microparticles Slurry for Model Ni and Ni20Cr. Experimental and Theoretical Approaches.

2012 ◽  
Vol 323-325 ◽  
pp. 373-379 ◽  
Author(s):  
B. Rannou ◽  
M. Mollard ◽  
B. Bouchaud ◽  
J. Balmain ◽  
G. Bonnet ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Substrate Surface ◽  
Single Step ◽  
Alloying Element ◽  
Aluminum Particles ◽  
New Approach ◽  
Theoretical Approaches ◽  
Barrier Coating ◽  
Coating Characteristics ◽  
Good Agreement

The use of thermal barrier coating systems allows superalloys to withstand higher operating temperatures in aeroengine turbines. Aiming at providing oxidation protection to such substrates, an aluminum-rich layer is deposited to form the α-Al2O3scale over which a ceramic layer (i.e. YSZ layer) is applied to provide thermal insulation. A new approach is now being investigated within the FP7 European project « PARTICOAT », in which a single step process is employed by applying micro-sized aluminum particles. The particles are mixed in a binder and deposited by brushing or spraying on the substrate surface. During a heat treatment, the particles sinter and oxidize to form a top coat composed of hollow con-joint alumina spheres and simultaneously, an Al-rich diffusion zone is formed in the substrate. For a better understanding of the diffusion / growth processes, preliminary tests were carried out on pure nickel and Ni20Cr model alloys prior to further application on commercial superalloys. The effect of the heat treatment on the coating characteristics (number of layers, thickness, composition, homogeneity, etc.) was particularly investigated to emphasize the mechanisms of diffusion governing the growth of the coatings. The establishment of the diffused layers occurred very readily even at intermediate temperatures (650 and 700°C). However, the layers formed did not match perfectly with the thermodynamic modeling because of the quick incorporation of Ni into molten Al at intermediate temperatures (650°C). In contrast, at higher temperatures (700 and 1100°C) the phases predicted by Thermocalc are in good agreement with the observed thickness of the diffused layers. The incorporation of Cr as an alloying element restrained Al ingress by segregation of Cr even at very low temperatures aluminizing temperatures (625°C).

scholarly journals Blood purification system for the chronic hepatic failure using urethanesheet embedded with powdered charcoal (UPC, BESPORETM)

1988 ◽  
Vol 21 (1) ◽  
pp. 55-59
Author(s):  
Hideki Kawanishi ◽  
Ryo Shinhara ◽  
Syuji Hoshino ◽  
Takahiro Bansyodani ◽  
Misaki Moriishi ◽  
...  
Keyword(s):  
Hepatic Failure ◽  
Blood Purification ◽  
Purification System

scholarly journals Highly efficient removal of ammonia nitrogen from wastewater by dielectrophoresis-enhanced adsorption

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5001 ◽  
Author(s):  
Dongyang Liu ◽  
Chenyang Cui ◽  
Yanhong Wu ◽  
Huiying Chen ◽  
Junfeng Geng ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Ammonia Nitrogen ◽  
Optimal Operation ◽  
New Method ◽  
Discharge Criterion ◽  
Efficient Removal ◽  
Metal Mesh ◽  
Emission Standard ◽  
New Approach ◽  
Enhanced Adsorption

A new approach, based on dielectrophoresis (DEP), was developed in this work to enhance traditional adsorption for the removal of ammonia nitrogen (NH3-N) from wastewater. The factors that affected the removal efficiency were systematically investigated, which allowed us to determine optimal operation parameters. With this new method we found that the removal efficiency was significantly improved from 66.7% by adsorption only to 95% by adsorption-DEP using titanium metal mesh as electrodes of the DEP and zeolite as the absorbent material. In addition, the dosage of the absorbent/zeolite and the processing time needed for the removal were greatly reduced after the introduction of DEP into the process. In addition, a very low discharge concentration (C, 1.5 mg/L) of NH3-N was achieved by the new method, which well met the discharge criterion of C < 8 mg/L (the emission standard of pollutants for rare earth industry in China).

Comparison Between the Sol-Gel Processes of Zirconia and those of Alumina

1988 ◽  
Vol 121 ◽  
Author(s):  
Alain C. Pierre ◽  
Donald R. Uhlmann
Keyword(s):  
Heat Treatment ◽  
Aluminum Hydroxide ◽  
Acid Content ◽  
Sol Gel ◽  
Aqueous Media ◽  
Excess Water ◽  
Zirconium Butoxide

ABSTRACTZirconia gels have been synthesized from zirconium butoxide in excess water with HNO3. The structure and characteristics of the gels have been studied as a function of the acid content, and the transformation during heat treatment has been followed up to 1150°C.From the results of a previous similar study on aluminum hydroxide gels, a comparison is made between the sol-gel processes of zirconia and those of alumina. A discussion of the differences of the aqueous media chemistry of Al and Zr, and gelation mechanisms, is presented.

Control of Rate of Solute Transport in Newly Developed Portable Agar Gel Blood Purification System

1998 ◽  
Vol 2 (1) ◽  
pp. 67-70 ◽  
Author(s):  
Akihiro C. Yamashita ◽  
Ryoichi Sakiyama ◽  
Hiroyuki Hamada ◽  
Kakuji J. Tojo
Keyword(s):  
Solute Transport ◽  
Blood Purification ◽  
Agar Gel ◽  
Purification System

scholarly journals New approach to heat treatment of spring steel

2021 ◽  
Vol 1178 (1) ◽  
pp. 012031
Author(s):  
J Kotous ◽  
P Salvetr ◽  
R Procházka
Keyword(s):  
Heat Treatment ◽  
Spring Steel ◽  
New Approach
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