Domain Structure

I just implemented windows domain structure, can someone educate me on how to block USB & CD ROM Drives?
I need to block the use of these devices (need to implemnt this due to virus attacks) using GPO or a script but i need to know how or possible see a script. no jokes, professionals only

This knowledge base article explains how to block removable media via Group policies pretty well: http://support.microsoft.com/kb/555324 It involves importing a new administrative template but how to do that is explained here: http://www.microsoft.com/downloads/details.aspx?FamilyID=e7d72fa1-62fe-4358-8360-8774ea8db847&displaylang=en

Why different structure of domain names?
On some websites i can see: http://images.website.com Others do like: http://www.website.com/images What's the difference between the two?

Typically if you see something like "images.website.com", that means that they are hosting (or storing) the images on a separate web server. A server different from the one that is serving the actual pages and text. Companies do this to try to spread the processing needed to server up a web page. Many companies keep their images on servers hosted by an outside company (typically this is Akamai). That "image hosting" company will usually have server located throughout the country or throughout the world, with really fast connections to the Internet. This way when you go to http://www.website.com/homepage.htm, the text comes from the companies web server, but the images come from a server that is closer to you (hosted on one of those Akamai servers), so that the page loads really fast, and the company doesn't use their network bandwidth to send the images to you.

Can you please define: (1) tertiary structure, (2) domain, and (3) fold?
Also- what exactly are the differences between these terms. How are they connected/related?thanks.

1. Tertiary structure - the third level of structure for proteins, where a compleate polypeptide chain is correctly folded into part of a whole protein. 2. domain - a level of taxonomical classification above kingdom. 3 domains, archae, bacteria, and eukarya 3. Fold - a specific bond in a polypeptide chain that helps twista polypeptide into a specific shape in tertiary function. Examples include hydrogen bonding, van der Waals interactions, and disulfide bridges. Fold and tertiary structure are related, but i cannot find a correlation between those two and domain.

Domain structure folder question?
I have a site at http://www.xuzo.com and have made a test joomla instalation in this directory http://www.xuzo.com/test Now how can I get http://www.xuzo.com/test indexed and crawled by Google quickly?

This page titled "Google - Tips 'n' tricks, submission, listing and ranking" should tell you everything you need to know. http://www.entheosweb.com/website_promotion/google.asp

what are the jobs in the domain of chemistry related to the study of the atom and its structure?


X-ray crystalographer or academics.

compare and contrast the structure of B-cell receptors and T-cell receptors based on the following criteria.?
-Domain structure of receptors (intracellular vs extracellular) -variable and constant regions -interaction with antigen

both have extracellular antigen receptors both have similarly structured constant regions, and variable, and hypervariable regions. though the b cell is the only one that will undergo somatic hypermutation and clonal selection. the b cell needs the antigen presenting to it by the t cell. t cells can interact with anything, that wasn't coded for in the thymus (see t cell education!)

why is the structure of the plasma membrane basically the same among organisms of all 3 domains/ 5 kingdoms?
why is the structure of the plasma membrane basically the same among organisms of all 3 domains/ 5 kingdoms?

Probably because they all perform the same function of maintaining a barrier for the existence of osmotic gradients for all organisms. Also, they may share the same evolutionary roots and functions.

How do alpha helices form and why are they the predominent structure found in transmembrane domains?


Generally speaking, a helix is a very simple structural motif which helps the monomers (amino acids) be in a conformation with minimal energy penalties due to steric effects. The secondary structure of proteins depends on the amino acid sequence (primary structure) and the environment. The protein backbone has lots of peptides bonds and their NH and CO groups need to make as many hydrogen bonds as possible. In water you can have some H-bonds forming with water. However in a hydrophobic environment, such as the lipid bilayer, you can't have such H-bonds; all H-bonds have to come from peptide bonds and the system has to be such that no groups are left "facing" the lipids, without having an interacting partner. How could a peptide sequence cross the lipid bilayer? First of all it would require amino acids with hydrophobic side-chais interacting with the lipids-otherwise the energy penalty is huge. Still the backbone needs to form H-bonds. Since the groups can interact only with each other (not with the lipids) they have 2 options: either form an a-helix where hydrogen bonds form between the groups of amino acids which are very close in the primary sequence (2-3 positions away) or form a b-sheet barel; if a barel is not formed then the NH & CO groups at the edge of the sheet would not be satisfied. The latter requires many more amino acids. Thus, a-helix, is the predominant form because it requires the smallest number of amino acids to transverse the membrane without an energy penalty. Sorry for the bad answer but it's too late...

is it possible to have 7 electron groups in the lewis structure of an ion?
Consider [IF6]- of iodine hexafluoride ion. I tried drawing the lewis structure for the ion by determining A, N and S. A = 7 + 6(7) + 1 = 50 electrons N = 8 x 7 = 56 electrons S = 6 electrons = 3 bonds This is what I got: (please follow the link) http://i140.photobucket.com/albums/r29/firegonegray/iodinehexafluoride.jpg When asked about the electon domain group (also the electron group geometry), I noticed I have 7 electron groups, which is contradictory to the fact that the maximun number of electron groups is 6. have i done anything wrong?

it is not strict to the letter that "the maximum number of electron groups is 6". iodine has quite a large atomic size, so it can accommodate additional electrons. look at this: http://en.wikipedia.org/wiki/Image:Iodine-heptafluoride-3D-balls.png the geometry of [IF6]- is similar to that one except that one previously covalent bond is now a lone pair and thus will repel the other bonding pairs since the lone pair requires more space.

What are subgovernments, issue networks, and policy domains? How do they structure the interactions of policy?


Sadly, i think the answer is $$$$$$$$$$$$$$$$$ which affects everything in politics.