albertlee

thanks Dave. The disk scanner tells you the bad sectors and that's it, but I cant do anything about it.... My first priority is to recover my file, not to analyse the error of the HD... I am like 90% sure about the malfunction. It should be the physical damage...and I think there must be some programs which can mark those bad section of the HD so the OS wont place data in there. Any one knows such software? Secondly, refering to my first aim, what is the best file recovery software you know? please help thanks

thanks Dave. The disk scanner tells you the bad sectors and that's it, but I cant do anything about it.... My first priority is to recover my file, not to analyse the error of the HD... I am like 90% sure about the malfunction. It should be the physical damage...and I think there must be some programs which can mark those bad section of the HD so the OS wont place data in there. Any one knows such software? Secondly, refering to my first aim, what is the best file recovery software you know? please help thanks

Does any one know, or think, of any data recovery software better than GetDataBack? see info: http://www.runtime.org/downloads.htm because my HD has some sort of failure that from now on, every time I start the laptop, it never boot into Windows Xp Home as it usually does... I have managed to install another Xp onto the other partition of the same HD, and I can view the other failure partition, but for some of the folders ,when double-clicked, the computer says something like directory either damaged or corrupted or unreadable or something like that... therefore I try GetDataBack for FAT, but another problem is, it pops up alot of window saying blabla sector cannot be read or blabla block cannot be read... please help.... thanks

thanks Klaynos and Ryan, but.. to Klaynos, in my case, the MySQL database server is hardware entity which is not bound with the php server or simply on any client's computer..., therefore, the distance from client or php server to the database is the same basically. So, is there another explanation on this structure? btw, why is there less request from php than client side program to the database server? to Ryan, well, I was told that php-database will be faster than client-database..... Any one can help here?? thanks alot

Recently, I am told that, application server, like PHP, can handle more simultaneous responds from users to transact with database server, like MySQL...unlike clientside only program, MySQL only allows a few simultaneous connections to it... and more over, it is also more risky since MySQL database URL is exposed..... I am more concentrating on: why can, eg, php, transact with database more efficiently than clientside-only program<--> database server??? any explanation to this?? thanks

Alright... thx for all the helps!

oh..thanks... but, what is a "thermal equilibrium"?

but if there exists stronger intermolecular forces between water than air, shouldn't the kinetic energy of water molecule slow down, so lower temperature, as it fits into the kineitc theory of atoms? more over, what causes particles to move around? well, I know it's the heat energy, but how? electrons only move their orbits though..

We know that temperature indicates the overall kinetic energy of an object, like air, water, metal, etc... however, if air and water exist in room temperature, how come air remains gas while water remain liquid? doesn't that contradict the kinetic theory of atoms which the particles in liquid have less kinetic energy than particles in gas??

..ok.. if my question is unclear.. can any one at least explain to me what's "electro-deoxidation"?? thanks alot`

Well, why dont you compile your work before hand and save it to the USB disk? most certainly, every computer will have a java interpreter, if that computer can run an applet on IE.

I have read an article on this which I cant fully understand, but they mention that that typical electrolyte is used to cause something like electro-deoxidation of titanium oxide........ In such process, electrons are attracted to oxygen forming O2-, where it then goes to the anode and release the 2- to the electrode and bubble off.... can any one explain from this perspective?? thanks

FFC Cambridge process is latest process to turn TiO2 into pure Ti.. however, do you people know why molten CaCl2 is chosen as an electrolyte?

TiO2 + C + 2Cl --> TiCl2 + CO2 then TiCl2 + Mg --> Ti + MgCl2 above is the typical way of producing titanium... however, why not just react TiO2 with C, so the reaction looks like: TiO2 + C --> Ti + CO2... wouldnt the simpler method uses much less energy?? please help

thanks Borek....

Ryan, I cant understand the notation you use for both silver and gold...which contain Krypon and Xenon... maybe you can direct me to a brief easy website on this, so I can delve a bit myself? thx

this is abit confusing... if water is evaporated in room temp, then, its pressure does not equal to the ATM?

no ryan... the electrolyte will force the electrode of Mg to give away its electrons...and then Hydrogen will take those electrons and form H2... the Mg ions then attract Cl to form MgCl2... so, I see there's no extra electrons flowing... please help thx

but Ryan, Silver also has 1 electron in its outer shell, but it's so unreactive....

thx!~

Say, a battery using the electrolyte HCl, and eletrodes Mg, and Cu.. The Mg will decompose to Mg2+ and e-... the electrons bond with Hydrogen to form gas while Mg2+ bond with Cl- to become MgCl2... Ok, so how does that produce electricity? the electrons are used up to form various compounds... plz help

well,. boiling point indicates the amount of heat to change water from liquid into gas... I think evaporating is the same.... any help here?

I think acids are ionically bonded..., but I have never seen solid acids... any help? thx

????!! then why we call 100c the evaporating point? since even room temperature can evaporate as you say....

We know that Potassium is very reactive... so, is pure potasium bonded metalically? if so, then, how come it is very reactive? if not, what type of bonding?