Duhallow Grey Geek

Duhallow Grey Geek I'm Tom Gillies. I'm a Business and Technical Analyst and I create IT training material from the Duhallow region of North Cork in the Republic of Ireland.

The Duhallow Grey Geek is the “business page” of Tom Gillies – that’s me! I describe myself as a “Grey Geek” because I live in the Duhallow region of North Cork in Ireland, and what hair remains is turning grey, so that created the name of my business: Duhallow Grey Geek. I create training courses and when the opportunity presents itself I work as a Business Analyst. My courses and the posts on th

is site reflect my interests, which are pretty varied. I have a degree in Chemical Engineering. My first job was with British Steel. After that, I moved to designing boilers, gasification plant and nuclear equipment for Foster Wheeler, and then I joined IBM UK. I spent many years working for IBM. It was a wonderful opportunity for personal growth. I have worked for all sorts of clients. My customers have ranged for vast corporations to tiny start-ups. I have worked for government departments, blue-chip corporations and start-ups. They are all interesting in their different ways and in their similarities! I worked for the British Steel Corporation during a difficult period, when they were both investing in new plant and closing down old plant. I have recently begun collating some of my experiences with coke ovens, blast furnaces and steel-making. My work at Foster Wheeler started out with gasification, using my experience of coke ovens, but soon expanded to include large-scale boilers and nuclear power. My department was also involved in renewable energy particularly wind turbines, and recycling technology. I live in rural Ireland. That’s a big change from the cities and towns where I grew up and spent most of my working career. I am interested in Autism, Hypnotism and Psychology. I like Motorcycles and especially two-strokes and oddities. When I make the time I try and improve my skill in the Russian Language. If you think I can help you with something, please do send me a message. I look forward to hearing from you!

My answer to "What are the properties of xylene?" https://www.quora.com/What-are-the-properties-of-xylene/answer/Tom-Gil...
06/11/2019

My answer to "What are the properties of xylene?" https://www.quora.com/What-are-the-properties-of-xylene/answer/Tom-Gillies?srid=ue4Gn

Tom Gillies's answer: Xylene is an "aromatic" chemical. Aromatic in the chemical sense that it contains a Benzene ring and aromatic in the general sense that it has a pleasant sweet smell. It consists of a bnezene ring with two attached methyl (CH3) groups. There are 3 isomers of xylene, known a...

My answer to "Is there any existing data on natural composites and their mechanical properties in detail?" https://www.q...
03/11/2019

My answer to "Is there any existing data on natural composites and their mechanical properties in detail?" https://www.quora.com/Is-there-any-existing-data-on-natural-composites-and-their-mechanical-properties-in-detail/answer/Tom-Gillies?srid=ue4Gn

Tom Gillies's answer: Yes, there are places where you can find data on the mechanical (and chemical) properties of natural composites. You will need to be careful about how you search for data for a number of reasons: 1. People may have different opinions on what is a "natural composite". 2. Th...

My answer to "What are the types of schema?2 https://www.quora.com/What-are-the-types-of-schema/answer/Tom-Gillies?srid=...
30/10/2019

My answer to "What are the types of schema?2 https://www.quora.com/What-are-the-types-of-schema/answer/Tom-Gillies?srid=ue4Gn

Tom Gillies's answer: You asked What are the types of schema? “Schema” is a word which is overloaded with meaning. That is to say, in the context of databases it has more than one meaning. The different meanings are incompatible and the one you want depends on context. Meanings or types I can th...

My answer to "Which ones are the most interesting facts about CO2, and why is that?" https://www.quora.com/Which-ones-ar...
28/10/2019

My answer to "Which ones are the most interesting facts about CO2, and why is that?" https://www.quora.com/Which-ones-are-the-most-interesting-facts-about-CO2-and-why-is-that/answer/Tom-Gillies?srid=ue4Gn -dioxide -critical-fluids

Tom Gillies's answer: I don't know about the "most interesting" properties of Carbon Dioxide but I find the physical properties: Melting Point and Boiling Point interesting, especially that Carbon Dioxide does not exist in liquid form below about 5 bars. This property (or properties) is illustra...

My answer to "Where can I find use cases for SQL commands, e.g., rank and dense rank (not just for those two)? I'm study...
14/10/2019

My answer to "Where can I find use cases for SQL commands, e.g., rank and dense rank (not just for those two)? I'm studying querying SQL 2016 but I want to know use cases." https://www.quora.com/Where-can-I-find-use-cases-for-SQL-commands-e-g-rank-and-dense-rank-not-just-for-those-two-Im-studying-querying-SQL-2016-but-I-want-to-know-use-cases/answer/Tom-Gillies?srid=ue4Gn

Tom Gillies's answer: The question was: Where can I find use cases for SQL commands, e.g., rank and dense rank (not just for those two)? I'm studying querying SQL 2016 but I want to know use cases. Hi Richard Uniacke, For the specific question, try these two links. II find that “sql server tutor.....

My answer to "Are the basic substances that make up all matter elements?" is basically "Yes", providing we limit ourselv...
09/09/2019

My answer to "Are the basic substances that make up all matter elements?" is basically "Yes", providing we limit ourselves to conventional chemistry. https://www.quora.com/Are-the-basic-substances-that-make-up-all-matter-elements/answer/Tom-Gillies?srid=ue4Gn

Tom Gillies's answer: You asked: “Are the basic substances that make up all matter elements?” Yes. If we turn that into a statement, then it makes a pretty good informal definition of an element, as: Elements are the basic substances that make up all matter. That’s one of the foundations of th...

My answer to "Where (if possible) can I find a database that contains a list of known chemical compounds (preferably in ...
24/08/2019

My answer to "Where (if possible) can I find a database that contains a list of known chemical compounds (preferably in JSON or CSV format)?" https://www.quora.com/Where-if-possible-can-I-find-a-database-that-contains-a-list-of-known-chemical-compounds-preferably-in-JSON-or-CSV-format/answer/Tom-Gillies?srid=ue4Gn

Tom Gillies's answer: The questioner asks: Where (if possible) can I find a database that contains a list of known chemical compounds (preferably in JSON or CSV format)? Put like that, I think you are going to be disappointed with the answers. I think you need to split your question into a numbe...

My answer to "How do you remove duplicates from a table in SQL with no primary key?". This is a really nasty situation. ...
08/08/2019

My answer to "How do you remove duplicates from a table in SQL with no primary key?". This is a really nasty situation. https://www.quora.com/How-do-you-remove-duplicates-from-a-table-in-SQL-with-no-primary-key/answer/Tom-Gillies?srid=ue4Gn

Tom Gillies's answer: The question was: How do you remove duplicates from a table in SQL with no primary key? There are some interesting and useful answers already. As others have said, you really shouldn’t get into this situation, but… I'm going to take a completely different approach to to so....

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