Categories
Ask Chemistry

Why are Tyrosine and Tryptophan considered hydrophobic?

Since Tyrosine and Tryptophan are amino acids, their polarity is determined on their side chains or R groups. If their R groups are polar, the amino acid is polar. Both Tyrosine and Tryptophan are listed as non-polar molecules. However, Tryptophan has nitrogen in its side chain and Tyrosine has oxygen, both of which have a […]

Categories
Ask Biology

Can viruses be reintroduced to humans from ice sheets?

A comment on reddit mockingly say because the ice is melting away due to global warming, this new virus came out of the melted ice sheets It has 60+ upvotes and no one replied Is it possible for viruses that are frozen in ice sheets to reinfect humans when they are melted?

Categories
Apple User Help

1 Mac Can’t ping another Mac

I’m trying to connect two Macs running Minecraft over a LAN server but the connection times out. I also tried pinging the host using terminal but it says that it timed out, too. I can ping this one just fine from a different Mac, and the one that I’m trying to connect to the LAN […]

Categories
Apple User Help

Preview shows logical page numbers only in thumbnail view

I have been noticing a weird quirk lately in Preview – on Mojave 10.14.6 – when viewing PDFs with logical page numbers (those that start with roman numerals and then switch to Arabic numbers). Preview recognizes that the file starts with logical page numbers but only in the left-hand thumbnail view and not in the […]

Categories
Apple User Help

Odd issue with same name files

I had a lot of junk files in my Desktop directory and i decided to select them all (Option+A) and create a new directory with those files (^+Option+N). I was surprised with a popup saying that i have files with the same name and asking me what to do. I promptly stopped and compared the […]

Categories
Apple User Help

MacBook freezes constantly but not in safe mode

This is a MacBook Pro, 13 inches, from 2016, running Mojave 10.14.3 First I noticed that the mouse moved in a jittery fashion, like if it bounced around the point I wanted it to be instead of simply being there. Then the computer became excessively slow. Opening a new tab to google the problem took […]

Categories
User Help Web Pro

infinite loader with console error on a page will harm SEO [duplicate]

I have a single page application where some of the category and brand pages are infinite load on the screen (those pages are older now no more available) I want to avoid them. should I use 404 not found page? instead of the loader.

Categories
Apple User Help

“[__NSDictionaryM setObject:forKey:]: object cannot be nil (key: _name)”

I recently wiped and reinstalled my MacOSx operating system due to repair corrupt files, too many old migrated, and unrepairable user permissions errors. I am the only user and have been the only user on all of my mac and apple devices. I still have a problem that no one at Apple can help me […]

Categories
User Help Web Pro

only loader (spinner) is loading when old page hit by user that harm SEO ! so what is best practice

we have built our eCommerce web site using angular single page application , we have implemented spinner control that runs until the page is responding with the expected content. the issue is we have some category pages which is crawl and index by google , and those pages are no longer available in the site […]

Categories
Apple User Help

How to change the order of the virtual desktops

Is it possible to change the order of the desktop assigned to each monitor? It used to be setup so that they where all in sequence, 1 (laptop), 2, 3 however after working in a remote location for a while and plugging back in the monitors it switched to 1 (laptop), 3, 2 and now […]