Change in stresses in a glass strip and glass sheet under transverse and longitudinal cutting

1983 ◽  
Vol 40 (9) ◽  
pp. 457-460
Author(s):  
B. I. Pokrass ◽  
S. �. Umanskii ◽  
V. P. Kononko
Keyword(s):  
Glass Sheet ◽  
Glass Strip ◽  
Longitudinal Cutting

scholarly journals Adjustment of the methodology of the tetrazolium test for estimating viability of Eugenia uniflora L. seeds during storage

2014 ◽  
Vol 36 (3) ◽  
pp. 344-351 ◽  
Author(s):  
Daiana Karoline Kaiser ◽  
Laura Cristiane Nascimento de Freitas ◽  
Rubia Priscila Biron ◽  
Simone Cristina Simonato ◽  
Michele Fernanda Bortolini
Keyword(s):  
Seed Viability ◽  
Germination Test ◽  
Preparation Methods ◽  
Eugenia Uniflora ◽  
Paper Towel ◽  
Plastic Bags ◽  
Longitudinal Cutting ◽  
Direct Immersion ◽  
Tetrazolium Test

The study aimed to adjust the methodology of the tetrazolium test to estimate seed viability of Eugenia uniflora L. (Surinam Cherry). Seeds were collected in September 2012 and divided into four lots: freshly harvested (Lot I); stored in plastic bags in a refrigerator at 10 °C for: 15 days (Lot II); 30 days (Lot III); and 45 days (Lot IV). The freshly harvested seeds were preconditioned with direct immersion in water and wet paper towel, followed or not by longitudinal cutting. The seeds were immersed in a 0.1% tetrazolium solution for 4 hours at 30 °C. Appropriate soaking and preparation methods were applied to the seeds lots using three tetrazolium concentrations: 0.1; 0.5; and 1.0%; and four preconditioning periods (2, 4, 6 and 8 hours) at 30 °C. The viability results obtained by the tetrazolium test were compared with those of the germination test. Direct immersion of seeds in water for 24 hours at 25 °C, followed by a longitudinal cut was efficient for preconditioning the seeds. Seed staining with tetrazolium solution at a concentration of 0.5% for 2 hours at 30 °C can be used to estimate the viability of freshly harvested and stored Surinam Cherry seeds.

scholarly journals Kwestia chronologii, typologii i pochodzenia szklanej biżuterii z wczesnośredniowiecznego ośrodka grodowego w Gnieźnie

2020 ◽  
Vol 25 ◽  
pp. 247-289
Author(s):  
Joanna Sawicka
Keyword(s):  
Comparative Analysis ◽  
Chemical Composition ◽  
Glass Composition ◽  
Starting Material ◽  
14C Dating ◽  
Glass Strip ◽  
X Ray ◽  
General Manner ◽  
Physico Chemical ◽  
Early Settlement

The study presents 175 artefacts from the settlement center in Gniezno – beads and rings. The materials come from settlement levels from around the mid-10th to the 13th centuries. The latest chronological findings based on 14C dating have made it possible to refine the dating, especially of the early settlement levels of the stronghold, where the vast majority of glass artefacts come from. Threeba sic groups of beads have been distinguished based on the technique of their production – beads made of a drawing a tube, the technique of winding a glass strip, as well as casting and sintering. The results of 7 physico-chemical analyzes of the glass composition (performed with the X-Ray Fluorescence, XRF method) are presented. Physicochemical analyzes of the chemical composition of the tested beads made it possible to determine the technological group and the type of glass. An attempt was made to explain the origin of the starting material (glass) for jewelery. A comparative analysis made it possible to indicate in a general manner possible manufacturers and to outline the likely directions of the influx of these glass ornaments to Gniezno.

scholarly journals Guided Axon Outgrowth of Neurons by Real-Time Femtosecond Laser Penetration on a 4 μm Thick Thin-Glass Sheet

2021 ◽  
Author(s):  
Dian Anggraini ◽  
Xun Liu ◽  
Kazunori Okano ◽  
Yo Tanaka ◽  
Naoyuki Inagaki ◽  
...  
Keyword(s):  
Real Time ◽  
Microfluidic Device ◽  
Glass Sheet ◽  
Axon Outgrowth ◽  
Neuronal Regeneration ◽  
Thin Glass ◽  
Manipulation System ◽  
Micro Holes ◽  
Fs Laser ◽  
Guidance Molecule

Transplantation of scaffold-embedded guided neurons has been reported to increase neuronal regeneration following brain injury. However, precise axonal integration between host and transplant neurons to form functional synapses remains a major problem. This study aims to develop a real-time femtosecond (fs) laser penetration on a 4 μm thick thin-glass sheet to promote guided axon outgrowth influenced by molecular gradients in a microfluidic device. The device enables the introduction of the guidance molecule (i.e., netrin-1), neuronal culture, and manipulation by fs laser. After fabricating multiple micro-holes on the thin-glass sheet using fs laser, netrin-1 gradients with radial concentrations are generated in the chamber, affecting axon outgrowth and guidance. A majority of axons (~92%) experiences guided outgrowth with positive angular changes towards netrin-1 gradients. These results demonstrate the capability of the precise and real-time manipulation system based on a fs laser and a microfluidic device to control the growth of neurons.

scholarly journals Effect of Parameters of Isopipe on the Quality of Glass Sheet Produced from Overflow Fusion Process by Numerical Simulation

2017 ◽  
Vol 95 ◽  
pp. 10006
Author(s):  
Yansheng Hou ◽  
Jinshu Cheng ◽  
Junfeng Kang ◽  
Jingjing Cui ◽  
Xinjian Xue ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Glass Sheet ◽  
Fusion Process

Model of Drawing Thin Glass Sheet From A Rectangular Preform and Its Applications

1999 ◽  
pp. 329-336 ◽  
Author(s):  
Aleksandra D. Milutinović-Nikolić ◽  
Nadežda M. Talijan ◽  
Radoslav R. Aleksić
Keyword(s):  
Glass Sheet ◽  
Thin Glass

Alignment of Ag nanowires on glass sheet by dip-coating technique

2018 ◽  
Vol 735 ◽  
pp. 607-612 ◽  
Author(s):  
Jinyang Feng ◽  
Huida Xia ◽  
Fangfang You ◽  
Haibo Mao ◽  
Xiao Ma ◽  
...  
Keyword(s):  
Dip Coating ◽  
Glass Sheet ◽  
Coating Technique ◽  
Ag Nanowires ◽  
Dip Coating Technique

Optimization and Characterization of Aluminum Induced Texture Using Radio Frequency Power

2020 ◽  
Vol 835 ◽  
pp. 359-366
Author(s):  
Hazim E. Elsorogy ◽  
Ahmed G. Soliman ◽  
Mai M. Elshahidy ◽  
Amr E. Abdelhakeem ◽  
Nour M. Elmahdy
Keyword(s):  
Optical Absorption ◽  
Radio Frequency ◽  
Glass Sheet ◽  
Rf Power ◽  
X Ray Diffraction ◽  
Corning Glass ◽  
Soft Surface ◽  
Frequency Power ◽  
Dipping Time

The purpose of this study aims to investigate the surface morphology and roughness of Aluminum induced glass texturing (AIT) substrate after different surface treatments. Aluminum layers were deposited in thickness 370 nm and 240 nm on corning glass sheet using Radio Frequency (RF) power. The effect of different concentrations of hydrofluoric acid (HF), 4%, 5% and 6% on morphology, optical absorption and surface roughness of glass was described. The dipping time of coated glass sheet in HF for 2 min and 5 min created very rough and soft surface, respectively. Optical absorption of AIT substrate after dipping in HF was measured. The optimum texturing process achieved by deposition of aluminum layer 240 nm of thickness and dipping the substrate in 5% HF. The AIT substrate was characterized by low angle X-ray diffraction (XRD), ultraviolet-visible spectrophotometer (UV-VIS), stylus profiler and scanning electron microscope (SEM).

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