ADVFN Logo

We could not find any results for:
Make sure your spelling is correct or try broadening your search.

Trending Now

Toplists

It looks like you aren't logged in.
Click the button below to log in and view your recent history.

Hot Features

Registration Strip Icon for default Register for Free to get streaming real-time quotes, interactive charts, live options flow, and more.

SAND Sandvine Corp.

123.00
0.00 (0.00%)
28 Mar 2024 - Closed
Delayed by 15 minutes
Share Name Share Symbol Market Type Share ISIN Share Description
Sandvine Corp. LSE:SAND London Ordinary Share CA8002131008 CMN SHS NPV
  Price Change % Change Share Price Bid Price Offer Price High Price Low Price Open Price Shares Traded Last Trade
  0.00 0.00% 123.00 - 0.00 00:00:00
Industry Sector Turnover Profit EPS - Basic PE Ratio Market Cap
0 0 N/A 0

Sandvine Corp. Share Discussion Threads

Showing 401 to 411 of 425 messages
Chat Pages: 17  16  15  14  13  12  11  10  9  8  7  6  Older
DateSubjectAuthorDiscuss
31/1/2024
19:51
Desert Wall: TED's Great Global Idea

Grupo GuitarLumber
25 Jul '09 - 07:28
0 3 0




Wall 'could stop desert spread'
By Jonathan Fildes
Technology reporter, BBC News, Oxford

waldron
17/7/2022
08:11
henryatkin
17 Jul '22 - 09:03 - 158461 of 158461
0 1 0
hosede ... way too pessimistic. Man repaired the hole in the ozone layer. Man went to the moon & back. Man built a thriving city in a desert & planted 170,000 trees last year

waldron
15/11/2021
10:14
courtesy of

partenope
6 Nov '21 - 12:06 - 23 of 25
0 2 0
Since it's the weekend I thought I would post this TED Talk featuring the Shell CEO Ben van Buerden. It features an hysterical, emotional young woman who says that he, van Buerden is one of the most evil men on the planet. It's worth a watch for that and also the American guy, an active investor, who managed to get Exxon to change three of its board using a much smaller stake than Dan Loeb's current position in Shell. This was about two weeks before Loeb made his holding known.

waldron
01/3/2021
14:18
Scientists Warn That Filling The Sahara With Solar Panels Is A Bad Idea

Meredith Poor Friday at 04:58 PM in Renewables

Meredith Poor

Power User
MP
Members
+ 702
779 posts

Friday at 04:58 PM

"Zhengyao Lu from Sweden’s Lund University and Benjamin Smith from Western Sydney University warned in a recent paper that turning the Sahara into a giant solar farm will have negative consequences for the global climate because of the way solar panels work.

Everyone knows the basics: photovoltaic panels absorb the energy of the sun. But just a step beyond these basics, we are reminded of the efficiency factor of solar panels, or the rate, at which it converts the energy it absorbs into electricity. The average to date is between 15 and 20 percent. So, 15-20 percent of the light solar panels absorb, they convert into electricity. The rest appears to be the problem, according to Lu and Smith."

Given that the Sahara is roughly 3000 miles across, it's worth pointing out that the largest 'reasonably sized' solar farm to meet global power production needs would be about 150 miles x 150 miles on a side. Any larger farm would generate power no one could use.

In any case, solar power farms would presumably be situated near their respective markets, so the Sahara would serve Europe and North Africa. Farms elsewhere would serve the southern countries in Africa. South America would have its own farms, as would North America. Sites in Asia might include the Gobi desert and certain parts of India. Australia has vast amounts of room, and might export power to countries like Singapore, Indonesia, and Malaysia.

Probably the largest economically rational site in the Sahara would be about 80 miles x 80 miles.

maywillow
18/11/2017
09:08
Aquifer alert: are we drilling to water disaster?
Nov 18 2017 09:00 Mandi Smallhorne

(iStock)
Related Articles
Why boreholes may be a really bad idea
Water crisis will be biggest challenge for Cape hoteliers - manager
SA could face water shortfall of 17% a year by 2030
Changing the way safe drinking water is bought and sold in Africa
Gigaba: Cape water crisis shows need for capable infrastructure
100 data science interns to tackle Cape Town water shortages


BURIED deep beneath Saudi Arabia are two fossil treasures: oil, of course, is one. Oil gave Saudi Arabia and other OPEC countries considerable leverage – remember the 1973 oil crisis?

Oil producing countries placed an embargo on oil supplies to the USA, the UK and other countries, including South Africa. By the end of the crisis, in March 1974, the global price of oil had quadrupled, from $3 a barrel to $12.

But Saudi Arabia feared that other countries might turn on it and exploit its weakness, an inability to feed its citizens. So in the 1980s, it decided to tap its other ‘fossil’ resource, water that had collected in an underground aquifer when the region was much wetter, some 20 000 years ago, to grow wheat and other crops.

After all, there were about 500 cubic kilometres of it under the desert, a staggering amount of water.

An estimated four-fifths of that is now gone, three decades or so later. With very little rainfall in the Wadi As-Sirhan basin where the crops are grown (100mm to 200mm annually), the aquifer has not recharged.

“A groundwater account is much like a bank account: if withdrawals exceed deposits, the account shrinks,” writes expert Sandra Postel in her 2017 book, Replenish. “Rarely monitored or regulated, groundwater depletion is the sleeping tiger of global water threats.”

It’s happening all over the world. The enormous Ogallala Aquifer is pumped to grow wheat in Great Plains states like Nebraska, Colorado, Kansas and Texas, producing altogether about one-sixth of the world’s grain. The water in the aquifer has been collecting since the end of the last Ice Age, around 15 000 years ago.

“By the beginning of the 21st century, a third of the world depended on aquifers for drinking water and farming. In China, plagued by drought, the North China Plain aquifer sustains 117 million people in Beijing and surrounding areas. […] aquifers in several of the world’s most productive, heavily populated regions are being drawn down at precipitous rates.

"NASA satellites, monitoring changes in Earth’s gravitational pull, found that 21 of the world’s 37 largest aquifers have passed the sustainable tipping point.”

When news broke that Beaufort West’s dam had run dry, the immediate response on a social media account I belong to was: why isn’t national government providing funds to drill boreholes? We do have large aquifer resources under the Karoo in the Karoo Basin, after all.

It’s a familiar response to water issues in a dry country – echoing Cape Town’s response to its crisis.

So here I am, banging on again about the realities of recharge: “…the recharge in the Karoo formations of South Africa varies between 2 and ∼5% of the annual rainfall”, that is 2% to 5% of an annual rainfall that ranges from 100mm a year in the more westerly and southerly parts to 500mm at best in the more north-east parts of the Central Karoo, and “recharge becomes negligible for rainfall lower than 400 mm” (Beaufort West gets about 160mm per annum, for example).

And that’s now: predictions are that climate change will bring with it significant decreases in rainfall for the Western Cape and Northern Cape; that includes much of the Karoo Basin.

Drill, baby, drill and forget about next year

So do we “drill, baby, drill”, and risk the fate of the Saudi and other global aquifers in pursuit of water now, and never mind next year or the year after?

I say No. Not No to ever drilling – No to doing it blind, risking a resource which could, in the immediate future (I’m thinking the next three decades) be a crucial insurance policy for a country facing hugely uncertain water prospects.

“Poor data is a key problem. Big projects to map groundwater reserves are still ongoing, but there are few measures of how many people are taking water out. The government has traditionally relied on people’s goodwill to hand over that information.

"There is no national control over the drilling of individual boreholes, unless a municipality has a specific bylaw to that effect. Legislation only kicks in when it comes to the industrial use of borehole water. In effect, anyone can drill a hole in the ground and suck up as much water as they want.”

This is too important to mess around with, to do piecemeal and without attention and study. We’ve in effect done it that way for long enough, and where has it got us? Let’s start by making sure we understand what we have and how it’s already being used.

But we also need to have an urgent, transparent, non-partisan and inclusive conversation about water – right now.

Let’s call on everyone (citizens and scientists alike) for thoughts, research, ideas, from the small-scale but effective – water harvesting and greywater use in every house and business – to grand schemes: can we find ways of artificially recharging aquifers, as some places globally are doing with recycled water, for instance?

Should we consider evacuating people from some of the harder-to-supply small towns? Is it at all feasible to direct precipitation from extreme weather events into potential storage spaces underground – and how safe would that be?

Only air is more important than water. In a rapidly changing environment, we simply cannot afford to get it wrong.

Mandi Smallhorne is a versatile journalist and editor. Views expressed are her own. Follow her on Twitter.

sarkasm
02/4/2017
13:04
Aramco, Adnoc, and Masdar partner on energy R&D
ABU DHABI, 1 hours, 10 minutes ago

Saudi Aramco has signed two separate agreements with Abu Dhabi National Oil Company (Adnoc) and with Masdar, Abu Dhabi’s renewable energy company, covering energy and technology collaboration, renewables, and carbon management.

Under the terms of the Memorandums of Understanding (MoU) between Saudi Aramco and Adnoc, the two companies will collaborate on identifying technologies that could deliver improved operational performance and efficiency across the oil and gas value chain.

The MoU was signed by Dr Sultan Ahmed Al Jaber, UAE Minister of State and Adnoc Group CEO and Amin H Nasser, president and CEO of Saudi Aramco.

Dr Al Jaber said: “We share many strategic objectives and increased cooperation between Adnoc and Saudi Aramco will further ensure our long term economic and energy resilience.”

“This agreement reinforces our renewed approach to partnerships, which are aimed at leveraging and building on existing industry expertise. Innovation and technology are critical to our growth strategy, and there is a strong focus on integrating new technologies into our upstream and downstream operations, as we work to harness maximum value,” he added.

Nasser said: “Saudi Aramco and Adnoc have a long history of enabling growth, development and innovation. Saudi Aramco's MOU with Adnoc will further strengthen and advance our joint goals for research and development in sustainable energy supply, development and management.

"Collaboration is crucial for success in achieving breakthroughs in our industry and we welcome Adnoc to be part of our network of collaborative relationships with leading energy companies and institutions."

Under the terms of the agreement of the MoU between Aramco and Masdar, the two companies will collaborate on sustainable development and renewable energy, in order to yield advancements in clean electricity generation, and carbon capture for Saudi Arabia, the UAE and the world.

The MoU was signed by Yasser Mufti, executive director for New Business Development at Saudi Aramco and Mohamed Jameel Al Ramahi, chief executive officer (CEO) of Masdar.

Mufti said: “Saudi Aramco welcomes the MoU with Masdar. We are embarking on an ambitious program in sustainable energy, including renewables and CO2 capturing and are also supporting the research and development efforts of various organizations and institutes in the Kingdom to promote renewables use in power generation and water desalination.”

This MoU, he added, “will facilitate cooperation in research and development, education and awareness, on the basis of each company’s experience in the development and deployment of sustainability programs.”

“This important agreement reflects the shared commitment of Masdar and Saudi Aramco to industry collaboration, which is essential in order to ensure that sustainable energy-based projects benefit from the best available technology, knowledge and skills,” said Al Ramahi.

“Working with Saudi Aramco will provide substantial insight into their unparalleled experience of deploying large-scale energy projects, while at the same time we are honoured to be able to share our own significant expertise as a first-mover in large scale commercial renewable energy development in the Middle East and international markets.

“The growth potential for renewables in Saudi Arabia is vast, and through our partnership we look forward to supporting the delivery of affordable and sustainable energy in the kingdom,” he added. – TradeArabia News Service

waldron
14/2/2014
10:16
SANDBANK PORTFOLIO RNS: SANDBANK PORTFOLIO RNS:
sandbank
14/3/2013
15:08
De-listed tomorrow from AIM
aishah
15/2/2013
14:10
Guess company will just kick in buy-backs as price falls
aishah
15/2/2013
12:40
Whether it's in an ISA or not doesn't affect it, it's the Toronto listing that qualifies it for the ISA.
b1ggles
15/2/2013
09:58
Ouch! ...de-listing from the UK.

UK holders well and truly screwed and scape goated here.

I can see this falling to all time lows by the time we get to the de-listing date.


Well miffed.

david_99
Chat Pages: 17  16  15  14  13  12  11  10  9  8  7  6  Older

Your Recent History

Delayed Upgrade Clock