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Could you please look at the recent comment on Talk:Cracking (chemistry). I tried to address what appeared to be well-informed concerns. The main things that would be helpful are (i) to confirm that hydrocracking does not do HDS/HDN - those steps precede hydrocracking - right? and (ii) could you give a generic equation for a hydrocracking reaction. What about this:

C₂₄H₅₀ + H₂ → 2 C₁₂H₂₆

I know that this is simplistic, but it would give readers a sense for the role of H2 and the lowering of MW. But correct me if I am off base. Thanking you in advance for your help or advice or even scolding.--Smokefoot (talk) 03:51, 8 August 2014 (UTC)[reply]

I just created Archive6 of my Talk page which covers May 2012 through July 2014. mbeychok (talk) 17:18, 9 August 2014 (UTC)[reply]

Unforgetting L.A. edit-a-thon: Saturday, September 6 from 11am to 4pm

Dear fellow Wikipedian, You are invited to meet up with online magazine East of Borneo for an edit-a-thon to build a better history of art in Southern California. This next event in their Unforgetting L.A. series will take place on Saturday, September 6, 2014 from 11am - 4pm at the Armory Center for the Arts in Pasadena (map). Beginners welcome! Please RSVP here if you plan to attend. For more info, see eastofborneo.org/unforgetting. I hope to see you there! Calliopejen1 (talk) - via MediaWiki message delivery (talk) 19:39, 20 August 2014 (UTC)[reply] To opt out of future mailings about LA meetups, please remove your name from this list.

Hi, Mbeychok! I've seen that you are a chemical engineer. Therefore I think your feedback on the issue at Talk:Raoult's_law#Ternary_systems_vapour_pressures_deviation is useful.--5.15.57.134 (talk) 10:44, 4 September 2014 (UTC)[reply]

I agree that this might be too detailed (and technically worded) for this article. However, that was the only place relative volatility was mentioned, which seems like a relevant associated topic. I don't know what fields of study use that terminology to know whether they would be looking at this less technical article enough to want examples. But I do know the theoretical plate article is highly technical and provides no actual examples. On the other hand, fractional distillation is a common topic in college (and maybe even lower) that does not need those details. But the qualitative idea of needing more plates for separating materials that have closer boiling points is often discussed in lab texts and demonstrated, so it seems useful to have a single actual (quantitative) example of that idea here in the less technical article. DMacks (talk) 19:41, 29 September 2014 (UTC)[reply]

The subjects of industrial fractional distillation, theoretical plates and relative volatility all fall within the purview of Chemical Engineering. Although I am a longtime Fellow Member of the American Institute of Chemical Engineers, I have never heard of chemical engineering being a "common topic" at any educational institution other than a full-fledged university. Any university student working towards obtaining a B.S. in Chemical Engineering has knowledge of those subjects by about his/her junior year ... and they are not considered to be "highly technical".

It is unfortunate that the Fractional distillation article includes a section on chemistry laboratory fractional distillation in glassware as well as sections devoted to industrial fractional distillation towers and their design. Perhaps students working towards a degree in B.S. chemistry are not conversant with "relative volatility" or "theoretical plates". mbeychok (talk) 22:36, 1 October 2014 (UTC)[reply]

A tag has been placed on File:Catalytic Reformer Unit.jpg requesting that it be speedily deleted from Wikipedia. This has been done under section F3 of the criteria for speedy deletion, because it is an image licensed as "for non-commercial use only," "non-derivative use" or "used with permission," it has not been shown to comply with the limited standards for the use of non-free content. [1], and it was either uploaded on or after 2005-05-19, or is not used in any articles. If you agree with the deletion, there is no need to do anything. If, however, you believe that this image may be retained on Wikipedia under one of the permitted conditions then:

• state clearly the source of the image. If it has been copied from elsewhere on the web you should provide links to: the image itself, the page which uses it and the page which contains the license conditions.
• add the relevant copyright tag.

If you think this page should not be deleted for this reason, you may contest the nomination by visiting the page and clicking the button labelled "Contest this speedy deletion". This will give you the opportunity to explain why you believe the page should not be deleted. However, be aware that once a page is tagged for speedy deletion, it may be removed without delay. Please do not remove the speedy deletion tag from the page yourself, but do not hesitate to add information in line with Wikipedia's policies and guidelines. If the page is deleted, and you wish to retrieve the deleted material for future reference or improvement, then please contact the deleting administrator, or if you have already done so, you can place a request here. GZWDer (talk) 18:38, 31 January 2016 (UTC)[reply]

A file that you uploaded or altered, File:Tourette references 80.jpg, has been listed at Wikipedia:Files for discussion. Please see the discussion to see why it has been listed (you may have to search for the title of the image to find its entry). Feel free to add your opinion on the matter below the nomination. Thank you. Stefan2 (talk) 19:43, 13 March 2016 (UTC)[reply]

A file that you uploaded or altered, File:BriggsL.jpg, has been listed at Wikipedia:Files for discussion. Please see the discussion to see why it has been listed (you may have to search for the title of the image to find its entry). Feel free to add your opinion on the matter below the nomination. Thank you. Kelly ^hi! 09:29, 19 May 2016 (UTC)[reply]

… on the preceding User page. Cheers, User:Leprof_7272, Le Prof 73.210.155.96 00:57, 17 March 2017 (UTC) — Preceding unsigned comment added by 73.210.155.96 (talk) [reply]

The file File:GFImg33.png has been proposed for deletion because of the following concern:

Part of a series of similar images I am proposing for deletion. File is old and unused and falls under the "unencyclopedic" criteria for file deletion (something that is unlikely to be useful on any Wikimedia project). I'm concerned that these images may be WP:OR due to their naming: their only description is "Gordon Feric", whose initials correspond with the title. Without a meaningful description, they are useless and serve merely to direct users to Feric's website.

While all constructive contributions to Wikipedia are appreciated, pages may be deleted for any of several reasons.

You may prevent the proposed deletion by removing the {{proposed deletion/dated files}} notice, but please explain why in your edit summary or on the file's talk page.

Please consider addressing the issues raised. Removing {{proposed deletion/dated files}} will stop the proposed deletion process, but other deletion processes exist. In particular, the speedy deletion process can result in deletion without discussion, and files for discussion allows discussion to reach consensus for deletion. DrStrauss talk 21:10, 3 August 2017 (UTC)[reply]

The file File:GFImg34.png has been proposed for deletion because of the following concern:

Part of a series of similar images I am proposing for deletion. File is old and unused and falls under the "unencyclopedic" criteria for file deletion (something that is unlikely to be useful on any Wikimedia project). I'm concerned that these images may be WP:OR due to their naming: their only description is "Gordon Feric", whose initials correspond with the title. Without a meaningful description, they are useless and serve merely to direct users to Feric's website.

While all constructive contributions to Wikipedia are appreciated, pages may be deleted for any of several reasons.

You may prevent the proposed deletion by removing the {{proposed deletion/dated files}} notice, but please explain why in your edit summary or on the file's talk page.

Please consider addressing the issues raised. Removing {{proposed deletion/dated files}} will stop the proposed deletion process, but other deletion processes exist. In particular, the speedy deletion process can result in deletion without discussion, and files for discussion allows discussion to reach consensus for deletion. DrStrauss talk 21:10, 3 August 2017 (UTC)[reply]

The file File:GFImg35.png has been proposed for deletion because of the following concern:

Part of a series of similar images I am proposing for deletion. File is old and unused and falls under the "unencyclopedic" criteria for file deletion (something that is unlikely to be useful on any Wikimedia project). I'm concerned that these images may be WP:OR due to their naming: their only description is "Gordon Feric", whose initials correspond with the title. Without a meaningful description, they are useless and serve merely to direct users to Feric's website.

While all constructive contributions to Wikipedia are appreciated, pages may be deleted for any of several reasons.

You may prevent the proposed deletion by removing the {{proposed deletion/dated files}} notice, but please explain why in your edit summary or on the file's talk page.

Please consider addressing the issues raised. Removing {{proposed deletion/dated files}} will stop the proposed deletion process, but other deletion processes exist. In particular, the speedy deletion process can result in deletion without discussion, and files for discussion allows discussion to reach consensus for deletion. DrStrauss talk 21:10, 3 August 2017 (UTC)[reply]

He contributed a lot to Wikipedia!94.99.213.251 (talk) 07:28, 23 March 2018 (UTC)[reply]

The file File:Tourette references.jpg has been proposed for deletion because of the following concern:

Unused, low-res, no obvious use.

While all constructive contributions to Wikipedia are appreciated, pages may be deleted for any of several reasons.

You may prevent the proposed deletion by removing the {{proposed deletion/dated files}} notice, but please explain why in your edit summary or on the file's talk page.

Please consider addressing the issues raised. Removing {{proposed deletion/dated files}} will stop the proposed deletion process, but other deletion processes exist. In particular, the speedy deletion process can result in deletion without discussion, and files for discussion allows discussion to reach consensus for deletion. --Minorax^«¦talk¦» 04:16, 24 January 2023 (UTC)[reply]

The redirect Converting units by using dimensional analysis has been listed at redirects for discussion to determine whether its use and function meets the redirect guidelines. Anyone, including you, is welcome to comment on this redirect at Wikipedia:Redirects for discussion/Log/2023 May 13 § Converting units by using dimensional analysis until a consensus is reached. Mdewman6 (talk) 17:33, 13 May 2023 (UTC)[reply]