G Glass Bead Tables | ScienceGate

SummaryDipyridamole (Persantin) is reported to prolong platelet survival and inhibit embolism in patients with prosthetic heart valves, but its mechanism of action is unknown. Fifty jxM dipyridamole failed to reduce the high percentage of platelets retained when heparinized human blood was passed through a glass bead column, but prolonged the inhibition of retention caused by disturbing blood in vitro. Possibly the prostheses act like disturbance. Although RA 233 was as effective as dipyridamole in inhibiting the return of retention, it was less effective in preventing the uptake of adenosine into erythrocytes, and more active in inhibiting ADP-induced aggregation and release. Thus there is no simple relation between these drug effects.

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Inhibition of Human and Animal Platelet Adhesiveness to Glass Bead Columns by Adenosine, Dipyridamole, Chlorpromazine and Acetylsalicylic Acid

Thrombosis and Haemostasis ◽

10.1055/s-0038-1648055 ◽

1976 ◽

Vol 36 (02) ◽

pp. 401-410 ◽

Cited By ~ 6

Author(s):

Buichi Fujttani ◽

Toshimichi Tsuboi ◽

Kazuko Takeno ◽

Kouichi Yoshida ◽

Masanao Shimizu

Keyword(s):

Guinea Pig ◽

Acetylsalicylic Acid ◽

Guinea Pigs ◽

Glass Bead ◽

Animal Species ◽

Inhibitory Effect ◽

Rabbit Platelet ◽

Platelet Adhesiveness

SummaryThe differences among human, rabbit and guinea-pig platelet adhesiveness as for inhibitions by adenosine, dipyridamole, chlorpromazine and acetylsalicylic acid are described, and the influence of measurement conditions on platelet adhesiveness is also reported. Platelet adhesiveness of human and animal species decreased with an increase of heparin concentrations and an increase of flow rate of blood passing through a glass bead column. Human and rabbit platelet adhesiveness was inhibited in vitro by adenosine, dipyridamole and chlorpromazine, but not by acetylsalicylic acid. On the other hand, guinea-pig platelet adhesiveness was inhibited by the four drugs including acetylsalicylic acid. In in vivo study, adenosine, dipyridamole and chlorpromazine inhibited platelet adhesiveness in rabbits and guinea-pigs. Acetylsalicylic acid showed the inhibitory effect in guinea-pigs, but not in rabbits.

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Non-Thrombogenicity of Clean Glass Revealed by Native Whole Blood Assay in Bead Columns

Thrombosis and Haemostasis ◽

10.1055/s-0038-1665319 ◽

1983 ◽

Vol 50 (04) ◽

pp. 814-820 ◽

Cited By ~ 1

Author(s):

J A Bergeron ◽

J M DiNovo ◽

A F Razzano ◽

W J Dodds

Keyword(s):

Whole Blood ◽

Glass Bead ◽

Factor Xii ◽

Platelet Factor ◽

Serotonin Content ◽

Whole Blood Assay ◽

Vascular Integrity ◽

Blood Assay ◽

Standard Contact ◽

Recalcification Time

SummaryThe previously described native whole blood assay for materials in solution or suspension has been adapted to materials in a bead column configuration. These experiments showed that the glass itself accounts for little or none of the high blood-reactivity observed with conventional glass bead columns. Columns composed solely of soft glass that was “cleaned” by heat treatment (500-595° C 18 hr, electric oven) were benign toward flowing native whole blood for all variables measured (platelet count and platelet-free plasma [C14]-serotonin content, platelet factor 3 and factor XII activities, and recalcification time) with the standard contact protocol. In addition, the effluent successfully maintained perfusion of the isolated kidney, a measure of the ability of platelets to support vascular integrity. Prolonged (30 min) normothermic contact with titrated whole blood increased the subsequent reactivity of initially clean glass toward whole blood albeit to a level much less than that of conventional glass bead columns.

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Study on the Glass Beads Refractive Index Testing Technology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.487.805 ◽

2012 ◽

Vol 487 ◽

pp. 805-809

Author(s):

Jun Ma ◽

Dong Hua Guo

Keyword(s):

Refractive Index ◽

Glass Bead ◽

Glass Beads ◽

Research Trend ◽

Future Research ◽

The Future ◽

Testing Technology ◽

At Home

this thesis discusses the main testing technologies at home and abroad relating to the glass bead refractive index, analyses the research emphases relating to the glass bead refractive index testing technology at present and point out the future research trend.

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A New Subperiosteal Glass Bead Inserter

American Journal of Ophthalmology ◽

10.1016/s0002-9394(14)76055-6 ◽

1985 ◽

Vol 99 (6) ◽

pp. 731 ◽

Cited By ~ 2

Author(s):

James W. Karesh ◽

Gustov A. Ay ◽

Paul Tittel

Keyword(s):

Glass Bead

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Effects of glass bead content and surface treatment on viscoelasticity of filled polypropylene/elastomer hybrid composites

Polymer International ◽

10.1002/(sici)1097-0126(199911)48:11<1068::aid-pi218>3.0.co;2-k ◽

1999 ◽

Vol 48 (11) ◽

pp. 1068-1072 ◽

Cited By ~ 30

Author(s):

J Z Liang ◽

R K Y Li ◽

S C Tjong

Keyword(s):

Surface Treatment ◽

Glass Bead ◽

Hybrid Composites

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The Influence of Surface Preparation of the Steel during the Renovation of the Car Body on Its Corrosion Resistance

Coatings ◽

10.3390/coatings11040384 ◽

2021 ◽

Vol 11 (4) ◽

pp. 384

Author(s):

Dariusz Ulbrich ◽

Jakub Kowalczyk ◽

Arkadiusz Stachowiak ◽

Wojciech Sawczuk ◽

Jaroslaw Selech

Keyword(s):

Corrosion Resistance ◽

Glass Bead ◽

Salt Spray ◽

Zinc Coating ◽

Surface Preparation ◽

The Other ◽

Average Thickness ◽

Spray Chamber ◽

Car Body ◽

Abrasive Blasting

The article presents the influence of the applied method used for removing the varnish coat on the corrosion resistance of the car body sheet. The tests were carried out on samples prepared from factory-painted car body elements with pearlescent, metallized and acrylic varnish. Removal of the varnish coat was performed by sandpaper grinding, glass bead blasting, disc blaze rapid stripping, soda blasting and abrasive blasting with plastic granules. The average thickness of the factory-painted coating depending on the type of lacquer ranged from about 99 to 140 µm. On the other hand, after removing the varnish, the thickness of the protective zinc coating ranged from 2 to 12.7 µm. The highest values of the zinc coating were obtained for samples in which the varnish was removed by the method such as soda blasting and abrasive blasting with plastic granules. For these two methods of surface preparation, the damage to the zinc layer protecting the steel against corrosion is the smallest and the percentage of zinc in the surface layer ranges from 58% to 78%. The final stage of the research was to test the samples after removing the varnish coat in a two-hour exposure to the corrosive environment in a salt spray chamber. Samples with the surface prepared by grinding with sandpaper reached the level of surface rusting Ri 5, while in the case of soda blasting and the use of plastic granules, no corrosion centers were observed on the surface of the car body sheet.

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Research on Particle Flow Erosion Precision Electroforming Technology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.771.75 ◽

2013 ◽

Vol 771 ◽

pp. 75-81

Author(s):

Nai Chang Dai ◽

Sheng Dong Yu

Keyword(s):

Mechanical Property ◽

Glass Bead ◽

Cathode Surface ◽

Special Functions ◽

Particle Flow ◽

Metallic Nickel ◽

Microscopic Structure ◽

Huge Amount ◽

Deposit Surface ◽

Particle Flows

t is possible to get electroforming deposit with numerous special functions by adoption of traditional electroforming technique, but in which there are defects such as uneven electroforming deposit and unstable performance, etc. In order to enhance the quality and speed of electroforming deposit, this article has proposed the particle flow erosion precision electroforming technology, particle flows such as huge amount of micro glass bead is used in the process of electro-deposit for erosion of electroforming deposit surface, so that micro glass beads continuously abrade and impact cathode surface. As indicated in electroforming test of metallic nickel, in comparison with traditional electroforming technology, particle flow erosion precision electroforming technology can effectively change the microscopic structure of electroforming deposit, refine grain and realize evener distribution of grains, so as to reduce the diffracted intensity of all crystal faces and enhance mechanical property of electroforming deposit.

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