* Posts by Chemist

1991 posts • joined 24 Mar 2010

Giant super-laser passes 500 TRILLION watts

Chemist
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Re: Let the water burn

Those are nuclear reactions !! NOT chemistry !!

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Chemist
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Re: Pulsed power...

All very well but it's not actually chemistry !

Chemistry doesn't involve converting one element to another

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Chemist
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Re: Pulsed power...

"Well I ass-u-me he means the lasers split the water into hydrogen & oxygen then ignite that.."

Oh good grief !

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Chemist
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Re: Pulsed power...

"Even ignite water."

Pray enlighten us all as to what water burns to ?

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Chemist
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"Except at the moment they fired it, right?"

At the moment they fired it it wasn't consuming any significant energy from the grid - that would have been built up over time into ( I presume) banks of capacitors

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Metro, that ribbon, shared mailboxes: Has Microsoft lost the plot?

Chemist
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Re: You think MS don't know this?

Whilst I accept that my work is not mainstream for many people adding together other users in academia, image processing and video it's clear to me that Linux is on the desktop if only in niche areas - not necessarily as easy for administrators I admit although I've never heard of any problems with print serving, file-sharing ( I have my own print/file/compute server)

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Chemist
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Re: You think MS don't know this?

"I even have Linux-on-the-desktop"

I know what you mean Trevor but it kind of gives the impression that business doesn't use Linux on the desktop. My last few years before I retired were spent using Linux workstations for heavyweight scientific purposes like protein modeling, quantum mechanics and 3D graphics and the company I worked for had 200 such systems spread around the world (and several 1024+ node Linux farms) - these were replacing SG workstations as the performance/cost was so much better.

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Is the Higgs boson an imposter?

Chemist
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Re: Observer effect?

"Mine is the one with cassettes of the original radio plays..."

Sadly, although I heard them all when first broadcast I don't have copies although I did record the more recent series. I esp. miss Peter Jones as the original voice of the guide.

Great, great idea and wonderful execution - all the time events have resonances with HHGG.

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Chemist
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"was that they'd demonstrated a sigma-5 level of probability"

that the signal wasn't just 'noise'

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Dell seeks Linux fans to try cut-price Ubuntu Ultrabook

Chemist
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Re: For that matter...

Always works with the distro's wifi drivers

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Chemist
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Re: For that matter...

"but stray away from the mighty brown distro and you're in for a painful time."

Absolute nonsense - never had a problem for years (~2000) using OpenSuse on lots of different hardware.

3G dongle, wifi, webcams USB headset, bluetooth, usb-serial convertors, epson scanner/printer, 3 lasers, vdpau graphics acceleration all worked - no fuss, no bother

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Judge: Patent litigants behave like animals

Chemist
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Re: Nice one judge

"Some of that is down to old-school (out of date) thinking on the part of synthetic and medicinal chemists"

Well I know what you mean but after 38 years of hoping that we'd be able to model reality sufficiently well to do most drug discovery in a computer I think we are still far from it.

The reasons are too many and varied for this forum but include :

1) The conformational flexibility of small molecules

2) The structural complexities of target molecules even when the structure is 'known' *

3) Even with a good structure to work with the reality is often far more complex with the target protein being actually in a different state or set of states in the physiological condition so that 'docking' of drug targets to the target is rendered useless.

4) Even if a set of algorithms could 'solve' 1 & 2 ALL the other criteria necessary for a safe, useful drug in terms of adsorption, metabolism, toxicity still need to be met - most drug leads fail here

* - the gold standard for structure determination is x-ray but this is done in the 'solid' state usually at low temperatures and that masks the kinetic and water effects seen in 'real ' situations.

I've seen vast advances in the area of computing being applies to medicinal chemistry but even in my own field of protein modeling there is still a LONG way to go.

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Chemist
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Re: Nice one judge

"Actually most drug discovery is done in software these days"

Total and utter bullshit !

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CERN catches a glimpse of Higgs-like boson

Chemist
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"How long 'til computers get that powerful?"

What makes you think it's not already happened ?

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Microsoft sets the price for a Windows 8 upgrade at $40

Chemist
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Re: I upgraded from Win 7 to openSUSE...

Why would I manually upgrade a kernel when the update mechanism will do it and the kernel modules for me - what would be the point ? I've never had a problem upgrading kernels probably for that reason and I never claimed that I (randomly ?) upgraded kernels manually - those days are over.

Drivers are NOT compiled into the kernel generally - they are loaded as modules when required and have been for years - look in /lib/modules/{kernel-version}/kernel/drivers/

I only research NEW and expensive hardware - everything else on 7 machines of wildly varying types and ages just works - I'm sorry if that fact upsets you.

I build all my own except laptops and they always work.

It IS the fault of the manufacturers - they don't release the necessary details in many cases which means supporting new hardware is a thankless task performed by some extremely talented and hard-working individuals who I thank daily and if it takes a while for a new driver I'm prepared to wait.

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Chemist
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Re: I upgraded from Win 7 to openSUSE...

"because you've not upgraded the Kernel when you know there will have been a problem."

I don't chose to upgrade I let the update mechanisms update when necessary I don't really understand what your point is ?.

As for none-working hardware if manufacturers chose not to provide drivers or give the necessary info then so be it . I'd always do a little research before spending any serious money.

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Chemist
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Re: I upgraded from Win 7 to openSUSE...

That's what I have Broadcom 4312 on a laptop - runs fine without any probs on OpenSuse 11.4

It's always better to check with a LiveCD of the distro if you can to spot any potential problems but I've not seen any for years

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Chemist
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Re: I upgraded from Win 7 to openSUSE...

On the contrary - 1 laptop, 1 netbook and 1 desktop running on wireless without ANY problems at all - the others are ethernet anyway. 1 3G dongle, 1 Epson scanner/printer, 3 serial-USB convertors, 1 Samsung laser - again NO problems. 2 built-in bluetooth and 1 USB bluetooth - no problems. 4 webcams - no problems

2 have Nvidia graphics again no problems - one running vdpau hardware acceleration which is needed really to playback 1080p/50 video

All are on OpenSuse 11.4 but in any case I've not had any serious problems for years

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Chemist
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Re: Drivers

Last laser I bought was a Samsung and it came with Linux drivers - I didn't use them as it was plug and play ( even networked Linux machines found the printer ) so it might be worth a Google.

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Chemist
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Re: I upgraded from Win 7 to openSUSE...

I've used Linux for years ( almost the beginning) on lots of hardware often with Nvidia hardware and I've NEVER had a problem when updating kernels. I've sometimes had to wait a while fort he newest hardware to be supported but that's often specific to a distro. On other occasions it was down to individual programs - so I bought a Canon D550 when it was new and had to wait ~10 days for RAW support !

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Chemist
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Re: I upgraded from Win 7 to openSUSE...

"and you don't have to mess around finding drivers."

7 recent Linux installs - NO drivers needed

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Reg hack attempts gutsiest expenses claim EVER

Chemist
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Douglas Adams as always ...

Bistromathematics - HHGG

(Something along the lines that mathematics done in seedy Italian restaurants have little relationship to mathematics anywhere else in the universe)

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Apple users get pricier hotel options from Orbitz

Chemist
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Re: <-- pint for the Linux dudes

"Linux - discounted real ale"

Homebrew here !

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Achtung Penguin! SUSE tunes up Linux for SAP

Chemist
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Re: Ausserdem

Well I use 11.4 at the moment on 6 machines and it's rock solid - I always try to stay 1 or two releases behind the most recent. I'm typing this on an Eeepc using 11.4.

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Chemist
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@Antoinette Lacroix

Well I read it as "Progress through OSS" although depending which bits you put in Google Translate it can be "Lead-free fuel by company"or "Free social fabric".

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Can't watch Flash vids in Firefox? It's not just you

Chemist
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Re: If it stops that damned Microsoft Cloud expanding banner ad...

There are ADVERTS on The Register pages - I didn't know that.

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US Navy buys Linux to guide drone fleet

Chemist
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Joke

Re: Yuk

"Any chemist with time on their hand can choose to kill lots of people"

I do it regularly just to keep my hand in !

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Chemist
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Re: Wrong focus (@M Gale)

Actually I think it's more like wishful-thinking

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Chemist
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Re: Wrong focus (@M Gale)

"but I know for a fact that Windows 7 is the most secure *off-the-shelf* OS ever built."

I find your omnipotence awesome !

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Chemist
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Re: Ironic

"yet there are huge chunks of Linux that are unreadable (Binary Blobs all over the kernel)."

WHAT !

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Chemist
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Re: Yuk

I've worked for pharma on many drug projects - whilst I'd be VERY upset if the only purpose was death it's not - ditto with Linux

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Windows 8: Not even Microsoft thinks businesses will use it

Chemist
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Re: Good thing for Linux

From the Microchip website

MPLAB® X IDE is a software program that runs on a PC (Windows®, Mac OS®, Linux®)

I've never had to "mess" with compilers just to run an application and Linux is all I use. From my 17 year experience of Linux, both at home and in research in a big pharma Linux has been a valuable desktop for years. Indeed at work, ~8 years ago, I only used Linux and Unix desktops as the extremely expensive protein modeling software programs were ONLY available for them.

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Chemist
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Re: The less

"The less intelligent people are, the more difficult it is for them to accept change."

The MORE intelligent people are the more they require progress NOT change"

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Small banking Trojan poses major risk

Chemist
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Re: As a 'Merkin I have yet to see true two factor authentication implemented

In UK NatWest use Debit Card+reader to authenticate any new on-line transfers via 2 factor.

Here in Switzerland UBS use same with special card + reader for actual login.

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Windows 8: We kick the tyres on Redmond's new tablet wheels

Chemist
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Re: Just Geddit People!

"regular folks and IT managers people think its so bad"

Strange then that we had several hundred installs in a major pharma that I worked for that were necessary because only Linux or Unix ran the necessary software and was stable enough to run for days on end at 100% cpu ( this is dual Xeon workstations I'm talking about - long before multiple cores )

"Ordinary " consumers will need to be able to buy PCs with Linux installed before it stands a chance there

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Chemist
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"their on-line bank only supports IE,"

Using only Linux and banking with 3 banks and 3 other financial institutions I'd be interested in knowing who the retard banks are. I've NEVER come across any site that insisted on IE and that include usage by friends and family who also use Linux.

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Chemist
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Re: "Failing that, there's always service packs"

"I expect somebody knows how to get Libre Office to print an address on an envelope and not across it."

Certainly I've never had any problems printing envelopes from Libre Office (although my Samsung laser, excellent in other ways, does tend to put a crease in the envelope)

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Chemist
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Re: *rolls eyes*

"you don't have to buy it"

Are you suggesting that in a year or two you'll be able to buy a PC without it ?. I build my own and only use Linux but for most people ...

(Unless it all goes pear-shaped)

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Chemist
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Re: The Year of Linux on the Desktop? Not yet.

Apart from any other considerations Linux on the desktop is only going to happen in appreciable numbers amongst non-technical or enthusiasts WHEN pre-loaded machines are readily available AND that's NOT going to happen due to pressure from Microsoft via discounts.

That said I use nothing else for all my computing ( 1 laptop, 1 netbook, 3 workstations and 1 server) and can do everything I want from editing 1080p/50 video, RAW photo manipulation, programming in a variety of languages, scientific modeling, pcb design and drafting and the usual browsing, writing and spreadsheets.

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Magnetic medicines hit the cancerous spot

Chemist
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Re: Dr Magneto will see you now.

A similar kind of approach has been used with antibodies to tumours with attached 'lethal' payloads. It's more specific and can 'auto-locate' all the tumour cells - but it's very expensive to generate the pure antibody and attach the payload. This approach looks a lot cheaper ( I wish) and even if not as specific might be a lot better than conventional treatment with cytotoxic agents.

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Trekkie wants to build USS Enterprise … in twenty years

Chemist
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Re: A journey to Alpha Centauri

"What kinetic energy?"

The kinetic energy of the mass at 0.1C + the relativistic extra kinetic energy due to the increase of the mass at 0.1C.

It's an absolutely enormous amount of energy - it's about 1E18 J to get a tonne to 0.1C

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Inside Nvidia's GK110 monster GPU

Chemist
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Re: Fermi, Tesla, and Maxwell would all want one

"Physicists (and not just physicists) always want more compute power than currently available."

Strongly agree !

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Pre-Pet Commodore micro up for grabs on eBay

Chemist
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Re: I remember a review ..

Could be - it was a LONG time ago - a different world

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Chemist
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I remember a review ..

in Practical Electronics or Wireless World where they jokes that there were a range of peripherals coming along like parallel ports, serial ports, memory expansion and space shuttles - I think MOS had some connection with Rockwell who were the main contractor for the shuttle.

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Fastest-ever hydrocarb scramjet hits Mach 8, doesn't explode

Chemist
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Re: More information:

"In terms of energy per kilogram, hydrogen is almost an order of magnitude"

Not as far as I know.

Hydrogen ~ 140 MJ/kg

Diesel ~ 45 MJ/kg

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Chemist
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Re: Backward step

Ethanol indeed but technically that's not a hydrocarbon. Hydrocarbons only have carbon and hydrogen but indeed that's semantics to a general audience

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Chemist
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Re: Backward step

"to productionise hydrogen in safer ways and wean us off our carbo"

Producing it safely is not the problem - getting the energy to produce it is.

Whatever way you make it needs energy - 2H2+O2 -> water +~~600kJ/mol So you need at least that and indeed a lot more to produce hydrogen gas. So >1MJ to produce about 70 litres of hydrogen gas.

Distribution and storage are also problems

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Chemist
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Re: Backward step

"Beer ... because it contains a hydrocarbon"

Well it might have a trace but I think you mean carbohydrate

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