Sheet steel laser cutting?

If you have a laser cutting machine that can cut a steel sheet up to 10 mm thick, is it possible to cut a 20 mm steel sheet in two consecutive passes? If the answer is yes or no, why?

09 October 2019 9,277 3 View

Lubrication regimen in pin on disk test?

I know that a way to establish the lubrication regime in a pin on disk test is by measure the resistance between the pin and the disc. Some papers say that if the resistance is of 2 ohm, the...

05 June 2019 7,779 3 View

How to create a mechanical engineering graphical abstract ?

Hi People. Here in RG there is a similar question but for works in biology. Some of you know if is there any software available to design mechanical engineering graphical abstracts ? Something...

31 December 2018 3,415 2 View

Warm forging of SAE 1045 steel?

Hi People. I need to know the temperture range for making warm forging of SAE 1045 steel.

31 December 2018 4,546 0 View

Hot forging dies made by SAE H13 tool steel?

Please. I need to know what level of hardness provide a equilibrated behaviour between wear resistance and toughness. Also, if a ionic nitriding treatment reduce the friction factor between the...

10 November 2018 6,466 1 View

Redes neuronales artificiales?

09 October 2018 8,748 0 View

Turning of low carbon steel?

People. I need your colaboration. What value of hardness do you think is the minimal to not worsen the maquinability level of the steel? I work with steel of 0,1% C. I some of you have a paper, is...

08 September 2018 9,234 3 View

How do I assess ignition risk during magnesium turning?

Some people say that the risk is bigger when the chip particles size are 500 micrometers or minus? What is the reason of this size?

07 August 2018 7,570 0 View

Recrystallization temperature of one steel?

Please. I need information about the recrystallization temperature of SAE 1010 steel, and also the temperature range for warm forging.

05 June 2018 5,685 3 View

Testing methodology of surgical drills used in bone applications?

Hi People. I need your help in relation to obtain technical information about testing methodology of surgical drills used in bone applications. This information may be standards, papers, and so...

02 March 2018 2,232 6 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

To date, according to health authorities, 30% of the population's diseases are initiated by drinking water pollution. Do you know this problem?

The main studies are as follows: * regular and timely receipt of information about the state of the environment using automated systems (stationary and mobile); * operational analysis of the...

23 February 2021 912 5 View

Multinomial probabilities and confidence intervals - obtaining the CI of the reference category?

Hi, Some background to my question: I have fitted 1st order multinomial Markov models with covariates. Since all probabiilties (for each row of the transition matrix) sum to 1, I estimate only...

22 February 2021 2,541 4 View

What are some underexplored theories and concepts in Activated Carbon as A Water Filter?

Hi, me and my team mates are currently planning to pursue the topic of Activated Carbon from Coconut as a Water Filter. And we would like to ask for your suggestions and knowledge on what specific...

22 February 2021 6,569 3 View

How to extract water soluble amino compound from after aqueous work up?

4-Dimethyl amino pyridine is used in reaction.Product formed contains amino group along with amide & is highly water soluble. To remove 4-DMAP aqueous work up done. Please give solution. Thanks.

21 February 2021 1,883 1 View

What are some underexplored theories and concepts in Activated Carbon as A Water Filter?

Hi, me and my team mates are currently planning to pursue the topic of Activated Carbon from Coconut as a Water Filter. And we would like to ask for your suggestions and knowledge on what specific...

21 February 2021 7,561 4 View