You can identify nutsedge by the small tubers in the root ball. If you need to kill grass growing close to ornamental plants, you can apply a grass-specific herbicide that targets only grasses without harming garden plants. These products will kill most annual grasses, such as crabgrass and foxtails, as well as perennial grasses, such as nimblewill and quackgrass. Apply selective herbicide exactly as you would a broad-spectrum herbicide. Once the grass has appeared completely dead for several days, you can dig up the plant from your garden. Observe the grass over the next few days; it should begin to turn brown and die.
- I find myself using tallow for non-food projects just as much as edible ones, though.
- Englishman Joseph Priestley impregnated distilled water with APK T carbon dioxide.
- When caffeine is consumed, it antagonizes adenosine receptors; in other words, caffeine prevents adenosine from activating the receptor by blocking the location on the receptor where adenosine binds to it.
- This should remind you of some of the rate graphs from chemistry.
- At each chosen temperature you could also calculate its resistivity and work out the change in resistivity with temperature .
The specific heat will determine how fast a piece of meat cooks. Lean meat is said to be the lowest specific heat at about 0.85 kJ/kg/K whereas fatty meat is about 0.95 kJ/kg/K. Bone is much lower at about 0.60 kJ/kg/K but this depends on how dense the bone is. You may need to develop a method based on ones you may have used for measuring the specific heat of brass, or look at the procedures used in food technology laboratories. I would look at heating a chunk to say 100°C in a laboratory oven and then dropping it in to chilled water (why chilled?). You would need pieces of similar meat but cut to different thicknesses.
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This can be done with a sharp shovel, a pick and loppers. The inside of the grove is harder to dig out as some species can form a solid root mass if culms were growing very closely. First It is best to wait until spring when new shoots start rising and get to 2-6 feet tall. This means that many buds have activated, and the bamboo is expending its energy. The reason why I am writing this blog is because sometimes people have problems with certain types of bamboos. Some species of bamboo can become invasive if they are grown in the right climate/ conditions or if the owner of the property doesn’t understand or care about it.
They also measured the shielding of a big AC laboratory power supply which has a big transformer inside it. The major findings of his investigation suggested that resonant induction is more than 1000 times more efficient than normal induction at the same frequency . However, the drop-off rate between resonant and non-resonant circuits differs, contrary to his hypothesis. There is ample opportunity in such an EEI to propose and test various modifications to the setup – and which would provide an even richer set of data. This made a fabulous EEI and one that I enjoyed reading . If you are planning a career in physics or electrical engineering this is one prac you will do at university.
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You could investigate ways to improve the accuracy of the method, you could look at the relationship between the measurement of g and other variables . To get an “A” requires a carefully thought out plan of manipulating variables and detailed examination of all the uncertainties and errors you’ve coped with. Parachutes are not only used for sport but for dropping soldiers into war zones and delivering food and medicine to flood and drought ravaged countries. Even though they’ve been around for several hundred years it wasn’t until after WW2 that the apex vent was invented. You could do an EEI to find out how drop time is affected by mass, canopy area, size of apex vent, number or length of strings, canopy shape and so on.
In September 2010, Reactor 3 was partially fueled by mixed-oxides . It is estimated that the oxidation of zirconium by steam in Reactors 1–3 produced 800–1,000 kg (1,800–2,200 lb) of hydrogen gas each. The pressurized gas was vented out of the reactor pressure vessel where it mixed with the ambient air, and eventually reached explosive concentration limits in Units 1 and 3. Due to piping connections between Units 3 and 4, or alternatively from the same reaction occurring in the spent fuel pool in Unit 4 itself, Unit 4 also filled with hydrogen, resulting in an explosion. In each case, the hydrogen-air explosions occurred at the top of each unit, that was in their upper secondary containment buildings.