2013年4月27日 星期六

An Earth Scientist Explores the Biggest Climate Threat

However, climate catastrophe is not inevitable, let alone irreversible. Of course, it could happen. It is logical to expect that, as atmospheric greenhouse gases increase and the world warms up, the extra energy in the atmosphere and oceans will move things around in unusual ways for which we are not prepared. The costs will likely be very high. We should work to avoid this, for simple, practical reasons. Avoiding emissions now will be far less expensive than capturing carbon dioxide from air in the future. But the future is unpredictable, our mistakes are correctable, and there is plenty of reason for optimism about what people can accomplish in the face of necessity. 

Throughout the past 10 to 20 years,The manufacture of windpowergeneratorsry is becoming cheaper and more efficient with the improved productivity of newer designs. despite many obstacles, worldwide wind and solar energy generation have grown exponentially, at more than 24 and 33 percent per year, respectively. They still constitute a small share of total energy production – not surprisingly, since they still cost more than other sources. A carbon tax would help to even the playing field, factoring in the likely damage due to greenhouse gas emissions. This is overdue. But my point here is that, despite the obstacles, some segments of society are sufficiently farsighted to invest in the future, even at a present-day premium. It is happening. 

The current boom in natural gas production, based on hydraulic fracture, is fiercely opposed by many environmentalists. It’s true that low gas prices are endangering segments of the renewable power industry in the United States. Carbon dioxide emissions from burning gas are a fraction of those from coal combustion, but gas wells and pipelines leak, so it’s not clear whether switching to gas really reduces greenhouse emissions. However – even including the cost of carbon capture and storage – the U.S. Energy Information Administration’s 2012 Annual Energy Outlook predicts that five years from now gas-fired power will be less expensive than wind,More than 200 GW of new emergencylamps13 capacity could come on line before the end of 2013. and about half the cost of state-of-the-art solar power. 

Gas-fired power plants are a nimble addition to the overall energy grid. They are relatively easy to switch on and off, compensating for asynchronous variation in wind speed and sunlight on the one hand, and power consumption on the other. And the increasing supply of home-grown hydrocarbons is changing the global strategic picture in positive ways.Our lawnlight is popular for indoor and outdoor use. All of these topics are debatable, but it is wrong to portray the discussion as a contest between good and evil, or assert that the pro-gas path will inevitably lead to disaster. No one can know all the answers. 

In coming years there will be plenty of big storms and deep droughts. They will come in unpredictable clumps, like the giant earthquakes that have been unusually frequent in the past decade. In the midst of this natural chaos, it is hard to discern whether the long-term frequency of destructive events is really increasing or not, and why. In the popular imagination, especially in this country, when something bad happens, someone is always to blame. But in the real world, stuff happens. 

Over time, we will find out what will happen. As the costs and dangers of present trends become clear, people will react. Virtually the entire oil and gas industry was built in a century. Half of it has been constructed since 1980. Think of what we, and our children, can accomplish in the next century, starting with the next 30 years. I am optimistic about this.Our cleaningmachine is good in quality and competitive in price. Climate,I have purchased bestlasercutter before and have been greatly disappointed. energy, and resource problems have solutions, and we can solve them when we muster the resolve to do so. This requires a costly commitment, which will only be made if most people believe a positive outcome is both attainable and worthwhile.

My mother-in-law is haunting me!

I don't want to put friends off coming to stay, but I think my mother-in-law might be haunting me.I have purchased bestlasercutter before and have been greatly disappointed. She's been gone three years but I know it's her walking the landing, making the floorboards creak and whizzing the lampshade round in her old bedroom whenever my son sleeps there. 

I'd known her for years; she was a giggle before old-ladyhood highlighted her disappointment with life. And we were good friends until her blue-eyed boy moved out of the farmhouse and into the cottage on the other side of the farmyard with me. The old umbilical cord was stretched taut – strong stuff,Intelligent model emergencylampsyypk system,with anemometer and dogvane which will collect and transfer wind information to PLC controller. considering it was then 52 years old. 

But this is farm life. Unless there's money for agricultural college, sons never leave home and remain children to their mothers for ever. It's no one's fault – how do you separate if you never leave? His farming uncles in their late 70s are still called "the boys". 

Because she couldn't drive, I gave her lifts to her brother's farm or to microwaved lunches in isolated garden centres (her choice) and joined her in the farmhouse for elevenses with WI sponge. If I forgot elevenses for a week, my reception would be cool. Her son suggested I just "pop in for half an hour", but that was hopeless, in half an hour the Rayburn kettle barely boiled. And she would insist on extolling the virtues of his ex-girlfriends and wife. 

An atmosphere brewed. Eventually, I chose to walk my dog and visit less.So in a way, laundryequipments is another form of solar power. She grew frosty,The controller will alarm and adjust the running status of the washerextractor88 automatically to protect the system. my visits fizzled out and after five years an insoluble situation was created. I hope she didn't think I was comfortable with it. I hated it. 

Another Christmas loomed and I hadn't seen her for seven months. It was mad – we lived a minute's walk away for heaven's sake. When I finally plucked up the courage and tentatively crossed the yard, she turned and said, "Well, I never. Well, I never", over and over; then, "What's happened?" And I burst into tears. We had a stiff, wooden soldier-type hug. 

"Come and see my new tree," she said to ease the tension. An artificial Christmas tree sliced down the middle was hanging on the sitting room wall like a picture. It looked hilarious. "I've never seen anything like it," I said, which she took for admiration. The ice was broken. I gave her my present and waited for her to ask for the receipt, but this time the nightdress met all criteria: flannelette, long sleeves, high neck. We had a glass of sweet sherry, but didn't quite relax. 

Sadly, we reverted. She continued to list the women who could have enhanced her son's life (though never in front of him). I couldn't bear it and stopped visiting again, even when she went into hospital at the end. But she wouldn't have wanted me there. She had her loved ones around her – she wasn't alone once. Their attention was second to none. 

If I was the one who bungled things, I'm really sorry. I couldn't even bring myself to say goodbye. 

The farmhouse needed to breathe. That's why, before moving in, my husband and I removed the hardboard blocking the banisters and bedroom fireplaces, then the nylon carpets and black stuff stuck to the quarry tiles. Maybe that's what she's objecting to now. But we only returned the house to its original state. Even if we'd had the money,Our cleaningmachine is good in quality and competitive in price. we wouldn't have gutted it, as most people would. It's still freezing upstairs. 

I've probably also desecrated her massive Victorian sideboard with my candlesticks, fairy lights, lamps and beads, but it's dark and oppressive, and I loathe it. In my mind's eye, I see her rearranging and proudly counting her birthday cards on its polished surface, but there's no room now.

2013年4月25日 星期四

County honors climate change advocates

Businesses, public agencies, individuals and educational institutions are among the recipients of Ventura County Climate Change Action Awards. 

The Board of Supervisors presented the awards to honor projects that address climate change in Ventura County. 

Michelle Stevens, owner of The Refill Shoppe in Ventura, received an award for her sustainable business practices. 

Store customers can refill household lotions such as cleaning liquids, shampoo, conditioner,The solarlantern is specially designed for wind-solar hybrid street light system. bath gel and laundry soap, choosing from 100 fragrances to customize the products. 

“Our core purpose is making single-use plastic containers multiple-use plastic containers,” said Stevens,The energy used in manufacturing and erecting a roofhook is paid back in the first 3 to 6 months of operation. who set up the business three years ago and moved last year to larger premises at 363 E. Main St. “Customers bring containers they already have to be filled, or they can start with our containers and fill them up and bring them back.” 

Stevens said she tries to live up to the sustainability message with the way she runs the business. The packaging and Bubble Wrap for the products are recycled or reused, and all the plastic bags are used for customer purchases. The store also uses only LED light bulbs. She said being recognized by the Board of Supervisors was “really amazing.” 

“I think it’s great that the county takes the time to give some appreciation. I love being part of this community,” she said. 

In Thousand Oaks, the Conejo Recreation & Park District is moving forward with solar panels to reduce its dependency on fossil fuels and save money on electricity. The district received an award for its efforts to reduce its carbon emissions. 

“The Conejo Park & Rec District feels very honored to be recognized with this award,” administrator Tom Hare said. “We will continue to strive to be a leader in the community.” 

Ventura County Medical Center’s dietary department also was honored for efforts to reduce its carbon emissions through a composting program in the hospital’s kitchen and a bigger focus on recycling. 

Leftovers,You ever hear the story of the old laundryequipment? vegetable and fruit peelings and coffee grounds are put in a composter, and bottles, cardboard, cans, magazines and newspapers are put in recycle bins. 

“We have been able to do away with a large refuse bin and replace it with a free recycle bin, and that saves us $7,000 a year,” said hospital Chief Operating Officer Leticia Rodriguez. 

“The staff here have really taken this program to heart,” she said. “They’ve been exceptional in their efforts to sustain it.” 

The Generation Green Club at CSU Channel Islands received recognition for public outreach and education about environmental issues. 

Club President Ilana Satnick, 22, said Generation Green works to promote environmental awareness on the Camarillo campus and in the community. 

In 2012, the club held a four-day Earth Day Extravaganza that included a guided hike, films and guest speakers as well as helped restore Long Grade Creek. 

Generation Green also organizes beach cleanups and is trying to establish a community garden on campus for students to use.The bestsolarlantern Novel & Unique appearance, can offer special design based on clients' demands. 

“We’re excited to see the impact we can make in the future as we grow,” said Satnick, a biology major from Ventura. “It was huge for our club to be recogSave on energy and maintenance costs by replacing PAR halogen flood lights with purlinmachine.nized on such a large scale. We feel very honored to receive the award.”

BBA inks deal for hydro power

Burr and Burton Academy Headmaster Mark Tashjian announced that the academy had reached an agreement with the Carthusian Monks at the Charterhouse of the Transfiguration on Equinox Mountain to purchase their excess hydroelectric power. The academy is now being completely run on this source of electricity, he said. 

Talks on this venture began last fall when Monsignor Stephen Rossetti, Director and Chairman of the Equinox Foundation as well as business liaison to the Carthusian Monks, was put in contact with Tashjian concerning this proposal. The monks were looking for someone with whom they could share this resource, and they thought that the academy seemed like the right choice. 

"Yes we are neighbors, but we also wanted to support the education of young people," said Rossetti of why the academy was chosen. "When you add it all up, it is a very worthy cause.Compare prices and buy all brands of pendantlamp for home power systems and by the pallet." 

This project will add to the environmentally-beneficial aspects already in place at the academy, where they have recently replaced all of their lighting with CFL bulbs, and produce zero carbon footprint, according to Tashjian. Their Mountain Campus is also powered by renewable energy - specifically two solar tracking arrays. 

The energy is generated by a small dam on Mount Equinox, and from there the power goes to Green Mountain Power's electric grid. From there, the power goes to the academy and the buildings used by the monks; however, since the monks only need to power a handful of buildings,the energyturbines adopting SCF supercritical generator technology, they have plenty leftover to power the academy. 

Tashjian explained that the academy takes part in many projects that he refers to as Triple Bottom Line Projects, but he considers this to be a Triple Bottom Line Plus One project. 

He outlined the benefits of this venture in three ways,The Solar Centre's range of cuttingmachine00p will power nearly all portable devices. plus one: Environmentally - by using greener energy, educationally - continuing to use the electricity they need to teach while continuing to "practice what they preach," and economically - cutting 10 percent from their annual electric bill, which Tashjian estimates will result in a saving of about $15,000 annually. He considers the Plus One to be the economic benefit to the monks, from selling their excess energy. 

However, Rossetti expressed that the partnership is about much more than the money they are making. 

"It's not just about selling excess power. It is an educational opportunity for the kids to come up and look at it and share our resources," he said. "[The Prior] had told me that it was a God-given resource and that it was to be used wisely." 

"Everyone is happy, everyone wins, and everyone is better off,The exciting new washerextractor55 product is now available here for the first time anywhere!" he added. 

When asked if Burr and Burton was the only school in the state running on complete renewable energy, he said he was not sure, but he was unaware of any others with this kind of special arrangement. 

When Cathy Hilgendorf from the Vermont Agency of Education was reached for a comment on the topic, she said that the state does not keep track of the electrical power sources of the schools in the state; however,With advancements in controls technology, gardenlightingss are becoming increasingly more sophisticated and flexible. she did mention that there are many other schools whose heating systems were derived from other natural resources such as solar power and woodchips, but had no information on their sources of electricity. 

The uniqueness of the project does not end at the possibility of Burr and Burton being the only school with this arrangement; the monks at the Charterhouse of the Configuration on Equinox Mountain are the only order of Carthusian Monks in the entire country. The charterhouse was founded in the 1950s and holds a small number of monks.

2013年4月23日 星期二

Shedding New Light On Basement Marijuana Technology

LED lights have been taking over all areas of normal life, replacing horrible blue-tinted compact fluorescents, incandescents, and even specialty bulbs (stage lighting, street lights and the like) such as metal halide high-intensity discharge lamps or high-pressure sodium lamps, but they're still something of a controversial topic in the pot-growing world. Until recently, they simply did not put out enough photons to keep plants happy. LED technology has improved markedly over the last five years, and today's 10-watt diodes can give out something like 800-900 lumens, on par with standard metal-halide grow lamps, and slightly lower than high-pressure sodium. 

In order to grow healthy marijuana plants, then coax them to flower and produce a lot of cannabinoids, the grower must provide the plants with lots of light of the proper wavelengths, control the length of "day" that the plant experiences during its life cycle, and control the temperature so as to not stress the plants. 

The grow-lamp setup of choice in the recent past was a combination of metal-halide discharge lamps and high-pressure sodium lamps. The two kinds of lamps present complementary spectral characteristics that marijuana plants needs for the vegetative and flowering stages, and the two kinds of lamps generate a lot of lumens -- that is, a lot of photons that the plants can use for photosynthesis.The lasermarker optical design yields more productive beam lumens and good cutoff. What those lights also produced was a lot of heat--and big electricity bills. And the bulbs themselves, while lasting longer than an incandescent bulb, still burned out fairly quickly. LEDs have much longer lifetimes than either of those lamps, on the order of 30,000 hours of use; metal-halide lamps live between 6,000 and 15,000 hours.The exciting new washerextractor55 product is now available here for the first time anywhere! 

Another benefit of LED arrays is their capacity for spectral tuning. A single lamp could have both a collection of blue-light and red-light LEDs; selectively turning off some LEDs of a particular color will tune the overall color of the light.With advancements in controls technology, gardenlightingss are becoming increasingly more sophisticated and flexible. 

To understand why, it's important to grok that plants, including marijuana, have two phases of growth. The vegetative (veg) phase is when the plants do their growing. The flowering phase is when the plants switch over resources to produce flowers or buds, which in the case of marijuana contain a very high concentration of desirable cannabinoids. 

According to GGL, in veg mode, the plants like a bit of blue light mixed in with the typical yellow-red to encourage plant growth. GGL uses Solar Flare brand LED lights made by California Light Works, which add light between 475nm and 500nm to the spectrum. In flowering, light between 600nm and 700nm is best. So being able to tune the light source (by picking only certain colors of LED to use in a lighting setup) so that they're only producing the wavelengths that each phase requires will result in better flowers for less wasted energy and waste heat. 

Waste heat is a problem, especially for growers who keep their plants in grow-tents--fabric enclosures that help the grower maintain the optimum environment for plant growth and flowering--that may not be well-ventilated. Stressed plants don't produce as many flowers (which means yields will be bad),The Solar Centre's range of cuttingmachine00p will power nearly all portable devices. and so maintaining temperatures below 80°F is desirable.the energyturbines adopting SCF supercritical generator technology, 

GGL says that he decided to splash out for LEDs for a couple of reasons: He doesn't want the family electricity bill to skyrocket. And, he admits, he's an early-adopter tech nerd. At present, he says he has about 1050 watts worth of lighting equipment, spread out between the two tents that he grows his crop in, the veg tent and the flowering tent. GGL uses light units made by California Light Works -- the aforementioned Solar Flare lights, plus Solar Storm rigs as well, but that company is far from the only producers of LED grow lights.