Tag: 上海狼族休闲

Insurance Inspections Underway

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Half-time: Fulham 0 Rotherham 1

first_imgMatt Derbyshire’s early goal meant Fulham were behind at the break in the relegation clash at Craven Cottage. The striker forced the ball in at the near post after Fulham failed to clear their lines, giving the Millers a third-minute lead.The Whites responded almost immediately when Matt Smith’s hooked volley from a corner was cleared off the line.But Derbyshire came close to doubling Rotherham’s lead on three occasions, forcing Marcus Bettinelli into two good saves before hitting the post just before the interval.Bryan Ruiz also went close for the home side, who were booed off at half-time. Fulham (4-4-2): Bettinelli; Richards, Turner, Burn, Husband; Tunnicliffe, Guthrie, Parker, Bryan; Smith, McCormackSubs: Kiraly, Hoogland, Stafylidis, Hutchinson, Woodrow, Rodallega, Kavanagh Follow West London Sport on TwitterFind us on Facebooklast_img read more

Mars Dry Areas More Extensive than Thought

first_imgIf Mars had oceans or lakes, it wasn’t for long, at least in the Syrtis Major region.  Results of observations of the thermal emission imaging system (THEMIS) aboard the 2001 Mars Odyssey reveal about four times as much olivine as previously recognized in the Nili Fossae adjacent to the Syrtis volcanic shield.  Olivine quickly degrades in the presence of water.  Philip R. Christensen, principal investigator, who published the results in the June issue of Geology,1 believes eruptive volcanoes were the primary source of the olivine-rich basalts, not intrusive processes like dikes or sills.    The report on Mars Daily says the area studied is 11 times larger than the big island of Hawaii.  Co-author Victoria Hamilton said that finding this much olivine in a “very old region of Mars” was intriguing, and suggests that this area of Mars, at least, “has not seen much water.”    Nevertheless, other areas look like something flowed.  Mars Express released an image of Ares Valles (near where the Mars Pathfinder rover landed) that looks like an extensive flood plain.  Perhaps volcanic heat melted frozen groundwater for a brief flooding episode some time long ago.Update 06/06/2005: [email protected] reported that this could explain the methane.  Rather than coming from living organisms, the methane could emerge from the olivine in a process called serpentinization.  Chris Oze (Dartmouth) said, “I’d love to see bugs, but you can’t just go on hope.  You have to consider the geological options.”  Apparently, it would not require that much olivine to do the job, and now there’s probably more around than first expected.1Hamilton and Christensen, “Evidence for extensive, olivine-rich bedrock on Mars,” Geology, Vol. 33, No. 6, pp. 433�436, doi: 10.1130/G21258.1.Even if Mars had lots of water, and even if its atmosphere was able to shield out the harmful radiation reaching the surface, it would not necessarily have had life.  This just erodes the hopes of astrobiologists even further.  About the only lively thing going on is the occasional dust devil passing by (see movie taken by Spirit).(Visited 7 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

Building a Low-Cost Zero-Energy Home

first_img Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and construction details. This article is only available to GBA Prime Members Let’s say that your goal is to build a simple net-zero-energy home for your family. You insist that the home be energy-efficient, and you plan to include a photovoltaic (PV) array that is large enough to balance your annual energy needs.Your main stumbling block is that your budget is very tight. Is your goal attainable?Perhaps. Many builders have managed to complete a net-zero home that costs only a little bit more than a conventional house. If you want to take a similar approach, consider the following principles. 1. For a zero-energy house, net metering must be available Aiming for the zero-energy target only makes sense if your local utility offers a net metering contract. If your utility won’t provide you with a one-for-one credit for the kilowatt-hours that your PV system delivers to the grid, it’s going to be very hard to hit net zero.So clearly, step one is to buy a building lot in a community where net metering is offered by the local utility. (Even if you take this step, there is no assurance that the local utility will honor the provisions of the net metering contract for the life of the house. But it’s still better to start out with a net metering contract than it is to build in a region of the country where utilities are hostile to residential PV.) 2. Use an energy modeling program to optimize your home’s specifications As you refine your design, you’ll need to consider a variety of tradeoffs. For example, which approach will save more energy on an annual basis: increasing the attic cellulose from R-38 to R-50, or adding $1,000 of PV modules to your solar array?The best software to help you answer this type of… center_img Start Free Trial Already a member? Log inlast_img read more

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