2013年11月23日 · Common to xylem sap in general: water, plant hormones, mineral nutrients like Na, Ca, P, nitrate. Do not confuse sap with various mucilages, resins and latex - this is the sticky stuff. Common to phloem sap in general: water, simple sugars, mineral nutrients.

2012年3月1日 · In general xylem does remain full of sap during winter months and water conduction can begin again in spring with little effort because of the cohesion tension theory that was mentioned. From what i understand the mechanism is a combination of osmotic root pressure and increased soil water pressure caused by higher soil water volume during late ...

2015年9月5日 · The flow of xylem sap in spring before the leaves have grown. Mar 1, 2012; Replies 6 Views 7K.

2016年11月29日 · How can we determine the system properties (natural frequencies & damping ratio ) practically using forced vibration? One way is to measure the phase angle, using the bode plot, the exciting frequency corresponding to 90 (deg) phase shift should be the natural frequency, are there any other...

2020年9月17日 · To me the expression "unitless" doesn't make sense at all. Any physical quantity has a unit. Though it can be "dimensionless" like an angle, which is the ratio of two lengths if measured in radians.

2011年11月16日 · Thanks for your replies, I agree that the video doesn't look quite right. I found a further reply by the author suggesting that the wick they hung from the top of the capillary tube was long enough so that a drop forming on the bottom of the wick would just touch the surface of the water below which would then draw out the water from the wick.

2014年7月8日 · The live loading of 100 pounds per square foot means that the entire walking surface is assumed to be loaded this amount.

2010年4月14日 · You've described the typical turbo-supercharger, which is of course exhaust driven. The other types are the positive displacement type (Roots, Lysholm, etc) and centrifugal impeller type (Paxton); both are shaft driven.

2003年5月9日 · Now of course, the theist would say "But god sent his wisdom through you to answer her prayers." But that is bs. I have been a non-believer before I learned sap, and god did not grant me with computer ability, I merely learned it on my own. She of course, after thanking jesus, decided to thank me for delivering the message.

2012年5月19日 · I have reviewed my input file and can not identify where I might have went wrong. c Cell Cards 1 1 -10.41 -1 -9 u=1 imp:n=1 $ Fuel Pellet