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Any Ideas for My Survey ?

Here's how to do it- Hello, sorry to bother you but please can you take a short survey? I need it for my research about "Recycling at homes". Thank you, shall we start? 1.) Do you recycle? 2.) Do you think you recycle enough in a week? 3.) What items do you recycle mostly? 4.) How many times do you think you recycle in a month? 5.) Do you recycle aluminium cans? Why/Why not? (This is if you are making a survey for street to street instead of door to door) 6.) Does everyone on your street recycle or only some? Hope this helps and good luck with your survey!

Any Ideas for My Survey ? 1

2. Dose anyone know what it means when your refrigerator starts to freeze up?

HERE'S THE ANSWER: All of the suggestions given regarding cleaning under and around the motor and fan and the the cooling coils would be accurate if the fridge was NOT cooling. Those issues cause the fridge to be unable to cool. The idea about the door seals is a good one but that issue would not have happened all at once. You have two issues that may be compounding one another... the refrigerator froze up in the first place... and it wo not un-freeze now. The refrigerator is made to cool, not freeze... but the difference beween ideal cold and freezing is only 8-10 degrees farenheit. The first thing you need to know before you go "trying" solutions like replacing parts is what caused the thermostatic control to go beyond it's setting in the first place. This may have been something as simple as someone not shutting the door all the way. To diagnose: Take everything, and I DO mean everything out of the fridge and freezer. You can place it in picnic coolers if need be while you work on the rest. Un-plug the fridge and pull it out from the wall. While you have it out it is always a good idea to clean under and around the coils and so on. Also empty and clean the freezer discharge tray. This is the plastic pan on the floor that catches the water when the unit self-defrosts. Check the hose that leads into this pan. Is it clogged with dust? Is there a gruesome booger like substance growing on or in it? (Slime mould) Any clog in this line will stop the self defrost from working and will cause a full fridge freeze-up. Allow the entire fridge to defrost COMPLETELY. Why? Because now that it HAS frozen it does not have a working thermostat. This is the second problem... You have reset the temp settings... but the dial you are setting, which is an adjustable thermostat, does not work right now because it is frozen solid. If any moisture at all is inside of it, that moisture has locked it in place because it is now ice or frost. Note: You may have broken it when you turned it if it was frozen. Once all ice is gone, pour a little warm water into the floor of the freezer. This should run right out the hose onto the floor. If not... wait until it does. Now the discharge line is thawed. Turn the thermostats to OFF. Plug the fridge. It should stay OFF. Un-plug. Hit the thermostats (one in the fridge, one in the freezer, with a hair dryer for just a mnute. Let cool. Plug in. It should stay OFF. (If not you have broken the thermostat by forcing when frozen) ) Then set to the NORMAL setting (usually highlighted on the dial) You should hear a distinct click and it should kick on. Then turn the freezer on the same way. . Let them run for a few hours to get to temp. You will want to use the time to go get a refrigerator thermometer from the local hardware or kitchen store. Actually any wall thermometer will do. Place in the fridge on the middle shelf. You will want a temp of right around 41 degrees for normal cooling. If it does not get that cool after four hours, adjust to the next colder setting. If after all this the unit works OK it was probably that someone leftthe door open, someone accidentally turned the thermostat all the way to coldest, something was blocking the defrost vent in the freezer, something was blocking the vents inside the fridge, or the defrost line was clogged.

3. Where can I find an over the door wreath hanger for a door three inches thick?

You must have a try first whether a streetcar runs along line there. Simply drilling a hole then if not and turning a plug and a screw purely. Dan can there a thread and the wreaths are pinned on. -

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Problems of Phased Array Ground Penetrating Radar Detection System
Although GPR has been widely used in hydrology, engineering, environment and other fields, many basic theoretical and technical problems have not been fundamentally solved, so the real advantages of GPR have not been brought into full play.The main problems existing in GPR technology include:1) The detection depth is shallow, and the contradiction between detection depth and resolution cannot be overcome. Increasing detection depth means sacrificing detection resolution;2) Multiple spread and other clutter jamming are serious, and there has been no good elimination method, which exists in radars at home and abroad;3) The influence of medium unevenness is great and can not be eliminated, resulting in difficulty in obtaining necessary velocity data;4) The data collection method of single sending and single receiving can provide limited information for post-processing and interpretation.The above problems are fatal defects for GPR. Although many geophysicists, electromagnetic experts and geophysical workers have done a lot of research and improvement on radar antenna design, signal processing and underground target imaging, these works are only partial modifications to the existing GPR system. In order to develop GPR technology, we must update our ideas and solve the problems from the fundamental principle.In view of this situation, experts proposed to develop a new GPR system - phased array GPR detection system in 1999.The basic research idea is to replace the current monopole radar antenna with the phased array radar antenna by using the relatively mature military phased array radar technology. Its purpose is to gather the electromagnetic wave into a narrow beam to transmit underground (or detection object) through the phased array technology, and receive the radar echo signal reflected by the target by using the multi-channel acquisition technology, The advanced data processing is carried out, and finally the three-dimensional image of the internal structure of the detection object is given.Development prospect of ground penetrating radar technologyIt is worth noting that at present, similar products have appeared in the market, such as RIS antenna array series of a company, but these products simply combine multiple monopole antennas into array antennas, which is essentially different from the idea of phased array ground penetrating radar.Because the phased array radar converges the electromagnetic wave into a narrow beam by controlling the phase delay of each channel, the energy is concentrated and the wave front diffusion is small. Therefore, the detection depth of the phased array radar is much larger under the condition of the same frequency and transmission power; On the contrary, under the same detection depth, phased array radar can improve the transmission power, so its resolution is much higher than the existing radar. In addition, since the spherical wave transmission is changed to beam transmission, the influence of medium heterogeneity is much smaller.Secondly, the phased array radar works in a continuous scanning mode and can scan in multiple directions. Therefore, the amount of information is much larger than that of the existing ground penetrating radar. For some special detection work, such as the quality detection of embankment cut-off wall, its role is unmatched by the existing ground penetrating radar (monopole antenna radar can not detect the joints, forks and other defects of embankment cut-off wall at all).Because phased array radar is a multi-channel received signal, multi-channel superposition can be carried out, just like the multiple coverage technology of reflection seismic exploration. Therefore, multiple interference can be greatly eliminated, which is difficult for existing radars. The antenna of high frequency (600mhz-1ghz) phased array ground penetrating radar can be made smaller, and its advantages are unmatched by the existing ground penetrating radar in shallow detection.At present, the system prototype has been completed. The carrier free pulse working system with center frequency of 900MHz is adopted, and the transmitting and receiving antennas are separated. 16 (4 × 4) Transmit channel forming, beam aggregation and scanning 16 (4) × 4) The channel receives the echo, and the optional scanning angles are - 36 °, - 24 °, - 12 °, 0 °, 12 °, 24 ° and 36 °.The software part of the system has rich data processing functions. The main conventional processing includes filtering, gain adjustment, static and dynamic correction, deconvolution, complex signal analysis, time-frequency analysis, etc., and multi-channel data processing, such as velocity analysis, superposition technology, coherence analysis technology, array signal processing, etc. And weak signal extraction, target automatic recognition and inversion interpretation under various clutter interference. A large number of field experiments on concrete detection in Yichang Three Gorges dam are carried out. The experimental results show that the spotlight scanning function of phased array radar has been realized, the penetration depth is greater than 1.5m and the resolution is higher than that of ordinary radar.Editing: hfy
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