Chemistry

1509 Submissions

[3] viXra:1509.0275 [pdf] submitted on 2015-09-28 21:29:59

Effect of Processing Time and Concentration of Potassium Permanganate on Physico-Mechanical Properties of Denim Jeans During Stone Washing

Authors: Elias Khalil
Comments: 4 Pages.

Three 100% cotton denim jeans were treated with stone acid wash with the variation of processing time (1.5, 2 & 2.5 minutes) and concentration (1.5, 2 & 2.5g/l) of potassium permanganate after typical enzyme bleach wash. Various physical and mechanical properties (Hand feel, Weight, EPI, and PPI, Tensile strength, Shrinkage, Seam strength, Count & stiffness) were investigated before and after each treatment (concentration and respective time) according to standard test methods. It was found that change in processing time and concentration reveals big difference in various properties between treated and untreated garments.
Category: Chemistry

[2] viXra:1509.0176 [pdf] submitted on 2015-09-20 05:50:31

H2 Cars (Pem Hydrogen Fuel Cells)

Authors: Mahmoud Mohsen Ali Alsayes, Khaled Hazem Hamed Ahmed
Comments: 7 Pages.

For centuries the Energy crisis has been a curse that made Egypt and the world suffer in various ways. Energy is the backbone of many aspects of life; yet depending on fossil fuel as the main source of energy has numerous drawbacks like the high price, transportation, unavailability and pollution to the environment. This has led us to assign the design requirement of having a cheap, available rather than green fuel for cars. As a result, our PEM hydrogen fuel cells are the solution to the problem after making essential changes in order to increase its efficiency while decreasing the price, through using nickel as a catalyst, instead of platinum. Finally the test plan has assured that it meets the design requirements mentioned before, and unquestionably proved that our PEM fuel cell is the right and suitable solution for running vehicles.
Category: Chemistry

[1] viXra:1509.0167 [pdf] replaced on 2015-09-19 05:17:01

H2 Cars

Authors: Mahmoud Mohsen Alsayes, Khaled Hazem Hamed
Comments: 7 Pages.

For centuries the Energy crisis has been a curse that made Egypt and the world suffer in various ways. Energy is the backbone of many aspects of life; yet depending on fossil fuel as the main source of energy has numerous drawbacks like the high price, transportation, unavailability and pollution to the environment. This has led us to assign the design requirement of having a cheap, available rather than green fuel for cars. As a result, our PEM hydrogen fuel cells are the solution to the problem after making essential changes in order to increase its efficiency while decreasing the price, through using nickel as a catalyst, instead of platinum. Finally the test plan has assured that it meets the design requirements mentioned before, and unquestionably proved that our PEM fuel cells are the right and suitable solution for running vehicles.
Category: Chemistry