How does an archaeologist think?

Every profession has its own way of how to solve a problem (see my article https://www.researchgate.net/publication/319644185_Thinking_like_an_engineer and my question...

11 December 2019 10,019 10 View

How to think like Sherlock Holmes?

The sheer number of publications and their breadth make it impossible to keep up and to know a little bit about everything. We are forced to be selective or to read scantly. Sherlock Holmes a...

02 March 2019 7,574 25 View

What does an engineer do? Alternatively, what is engineering?

It has been said scientists investigate what which already exists; Engineers create what which has never been. I am pondering the question "What is engineering?" It has been said that engineers...

01 February 2019 4,401 14 View

What is an acceptable (i.e. tolerable) failure rate for water main pipeline?

A key consideration in the design of a natural gas transmission pipeline is the location class of the pipeline. The location class is a geographic area along the pipeline classified primarily...

10 November 2018 4,776 3 View

What engineers know and how they know it?

10 November 2018 7,659 9 View

Which should come first at the university, teaching or research?

Fifty years ago if you had a problem you would run to the head of your department as she/he knew all. Industry and government agencies used to wheel them in when there was a problem; but not now....

09 October 2018 9,550 2 View

How you do the fracture mechanics or X-FEM analysis in Abaqus if you only have an input file (no CAE file)?

I have an Abaqus input file of a complex model. It is very time-consuming to create a CAE model. I am wondering how crack definition can be added to the input file. Material id gray cast iron and...

08 September 2018 7,842 5 View

How do you determine the Remaining Useful Life (RUL) of cast iron water mains?

In some cities water mains are made of grey cast iron and may be 150 year old. Some of these pipe show sign of distress in the form of corrosion. These are huge assets and cannot be replaced...

08 September 2018 7,940 0 View

Is there a validated diagnostic and prognostic of cast iron penstock valve for water mains?

Many big cities established their water supply and sewer systems very early during the last century. Many of the penstocks and pressure conduits are over 50 years old. Corrosion and erosion have...

08 September 2018 9,539 1 View

What is an engineering judgment?

02 March 2018 6,016 10 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...

02 March 2021 6,036 1 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View