Effect of rock abrasivity (los Angeles abrasion test) on wear rate of the drill bit during rock drilling?

As I have conducted los Angeles abrasion test in the laboratory. Three type s of sandstone of varying UCS of Medium grained SS 13 MPa, fune grained SS 17.5 MPa and fine grained SS (pink) 51 MPa....

02 March 2019 7,298 5 View

I have 500 data set, Is it ok to split the in to 60% for training and 40% for testing?

As I have 500 data set in my work. I have split the data in to 60% for training and 40% for testing the data set in ANN. Is it ok to run the data set in NN. Pls give reason behind this so it help...

31 December 2018 7,001 1 View

What is the major application of temperature measurement during drilling?

If we have measured bit rock interface temperature using thermocouple during drilling. By embedded the thermocouple in the rock sample. Then what is the major application for industry,...

07 August 2018 9,646 11 View

Comparison wear rate between fine-grained sandstone and medium grained sandstone?

for fine-grained sandstone the wear rate is 10 mg/sec (temperature produce during drilling is around 128 dec. centigrade) and Medium-grained sandstone the wear rate is 6.66 mg/sec (temperature...

04 May 2018 6,315 0 View

How the wear rate behaves with respect to drill bit diameter?

if the diameter of the drill bit increases with the same spindle speed, wear rate will increase or decrease. give reasons.

03 April 2018 3,570 4 View

When the drill bit diameter increases, specific energy is decreasing? what is the reason behind this?

drill bit diameter increases from smaller to bigger during drilling operation, mean while we have calculated the Specific energy. but when the drill bit diameter increases, specific energy...

02 March 2018 3,384 6 View

When drill bit diameter increases thrust also increasing?

As the drill bit diameter increases, thrust also increasing. What is major reason behind this. Why it is increasing and even for depth of drill also.

31 December 2017 7,900 4 View

What is the main reason when temperature increases during drilling with decreasing in specific energy?

During continues drilling operation, temperature goes on increases with decreasing in specific energy, what the main reason. What is the technical reason behind this.

11 December 2017 1,201 3 View

Application of temperature measurement during rock drilling in mining industries?

what is the major application (In Mining industry) of Experimental investigation to be carried out for rock core sample to measure the temperature during drilling operation. please give the the...

31 December 2016 4,529 0 View

What is the main scope of identifying temperature while drilling of rocks?

during rock drilling operation, in hole wall surface and hole bottom surface, there may be a maximum temperature induced. what is the main scope to measure such temperature. and application ...

09 October 2016 295 3 View

Guidelines for survey (question type) analysis?

Hi. Please tell me what guidelines should i need to follow for questionaries' type research work in India. It is not hospital based work, we are conduction basic institutional based qualitative...

03 March 2021 2,037 3 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View

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02 March 2021 3,060 3 View

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02 March 2021 932 1 View

APA 7th In-Text citations with two references with three authors with the same surname, but four different author?

I have an issue with APA 7th in-text citation. II have two papers where the first three authors are the same, and the fourth is different. I am using the Mendeley desktop app, and automatically it...

02 March 2021 790 3 View

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View

Where can I find life cycle inventory or assessment of non woven materials?

Dear network, I am looking for the LCA or LCI or at least the energy balances of the non woven fabrics process for my master project, in specific for natural fibers, yet I have found...

02 March 2021 9,662 1 View

Please suggest a good text book for "Research Methodology in Life Sciences". Which book would be good for PhD Scholars?

Please provide Book Title and author name

02 March 2021 9,059 3 View

How does Scientist/RG community evaluates a case study article and the impact of it on a researcher career?

An article that is published as a case study in the SJR listed journal. How much value is added to a researcher career? How it is evaluated by a scientific researcher/University admission...

02 March 2021 9,661 3 View