Hello! How do I clean molten glass inside the muffle furnace?

More Samah Dafalla's questions See All

How we can correct the slide?

i am doing research on E.feacalis that is grown in dentin and after that, we did a gram stain for the sample my Q first does the gram stain consider as reliable tool for testing and seeing the...

14 February 2021 6,697 1 View

Calculating the CFU?

i am constructing research for the antibacterial activity of the medication and I am testing it by %RCC, so my Q after I did 10 serial dilutions for the bacterial suspension can we do plating for...

04 February 2021 5,886 1 View

How to determine the types of gene resistance of beta-lactamase to perform to my samples by PCR?

Greet to everyone. I did antibiotic resistance by vitek2 compact and I found beta-lactamase resistance phenotypically in Gram-negative bacteria. How can I determine types of bet-lactamase genes to...

05 September 2020 8,898 5 View

Hi, I want to run simulation with YASARA for different part of my protein separately but I dont know how to run?

I am working on enzyme engineering and want to run the simulation for my enzyme the open and closed conformation to see the effect of the mutation on my enzyme as its located on the lid. However,...

10 May 2020 2,625 1 View

Are there any guidelines to choose antibiotic genes resistance for beta-lactam to do multiplex PCR?

I isolated some Gram-negative isolates that appear high resistance to most antibiotics. I want to do multiplex PCR to isolates for beta-lactam gene resistance. are there any recommendations to...

22 February 2020 4,842 6 View

Is there a way to transform a function of two variables into one variable?

Hello, Assume that I have Z=f(x)+g(y). Is there a way that I can write Z as a function of one variable w that relates f(w) and g(w)? Thanks in advance for your help,

29 August 2019 3,132 1 View

Does boiling method for extraction of bacterial DNA is suitable to obtain bacterial and plassmid DNA to work on antibiotic resistance genes?

I work on antibiotic resistance genes in bacteria. Resistance genes present on plasmid. I extract DNA using boiling method. Does this method suitable to obtain plasmid DNA to study resistance...

04 April 2019 6,639 15 View

Sample size in experimental probability?

according to the probability theory, suppose that we calculate the experimental probability of students who prefer mathematics and it was .70%from a sample of 20 students (14/20), is that correct...

06 January 2019 3,681 6 View

Is international journal of innovative research in information security a recognized journal? or it is a fake one?

I want to publish a paper at a journal but I am confused where my experience is not too good to differentiate between fake journals or not.

22 December 2018 4,472 2 View

What is the best taxon sampling that lead to draw a reliable conclusion about the floristic affinities of entire flora?

I'm interested in studying the phylogenetic affinities of the flora of arid, nearshore archipelago (less than 100 km from nearest mainland). 300 species fall in 129 genera were recorded, no...

18 September 2016 499 3 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

Glass fiber content in a gypsum board ?

Any idea on how to get the volumic ratio of glass fiber in a gypsum board ? Thank you for your help !

01 March 2021 2,501 3 View

Concrete compressive strength databases?

I am looking for datasets similar to this one: http://archive.ics.uci.edu/ml/datasets/Concrete+Compressive+Strength I am looking for concretes with different types of aggregates (Recycled,...

27 February 2021 6,801 3 View

How to properly calculate the fluid solid heat transfer between polypropylene matrix and glass fiber in a porous medium?

I'm building a cfx model of thermoplastic pultrusion process on ansys and i have a doubt on how is the proper way to set this parameter in a porous medium

24 February 2021 1,915 1 View

How to properly calculate Interfacial area density in a porous domain?which are possible value for glass fiber?

I'm doing a cfx simulation of a multiphase flow in pultrusion and i set the Interfacial Area density in the heat exchange of a porous medium in this way IAD=Total fiber lateral surface of fiber...

23 February 2021 6,043 1 View

How can I measure the thickness of thin layers deposited on textured glass susbtrates?

I want to measure the thickness of aluminum oxide and titanium oxide layers deposited on textured glass substates. The layer thicknesses are typically below 100nm.

21 February 2021 5,465 4 View

How can I measure the surface interaction or surface interfacial chemistry between polishing abrasives and upper surface of substrate ?

I am working on polishing abrasives. I need to do few characterizations ? which can provide the on time surface chemistry of substrate with polishing abrasive during optical polishing. I would...

18 February 2021 5,319 3 View

No title

The regenerated cellulose film was prepared by zinc chloride/H2O system. The zinc chloride had been washed away in the regeneration process, and the wet film which was not dried had uniform...

18 February 2021 9,538 1 View

Which is the best silane for making a borosilicate glass surface hydrophobic permanently? and what is the protocol?

Regarding my needs I am looking for a glass coating agent that makes the glass hydrophobic permanently

09 February 2021 3,924 5 View

Is 60%/40% a typical fiber-matrix ratio in vehicle GFRP/CFRP composites?

Quick question I couldn't easily find a definite answer, so I hope someone here could help. I've been looking for information about the ratio (by weight) of glass or carbon fiber to epoxy matrix...

04 February 2021 740 1 View

Vadim Verlotski

It's not working. The tube, whether made of ceramic or quartz glass, is damaged beyond repair and must be replaced.

Akhilesh Kumar Singh

What's the tube material and at what temperature the glass molten? You can try remove the tube and heat it in vertical position at temperature above the glass melting point. Hope it helps...

Samah Dafalla

The tube is supposed to be made of quartz and melted at a temperature of 800 degrees

Samah Dafalla For quartz based system, it will be difficult as it may have reacted chemically at 800 C. Try using HF acid to dissolve the glassy phase but take care as quartz is also soluble in HF. If it doesn't work, try the heating method above 800 C. Hope it works for you..