Seminar Topic on: Biological Effects of Ultrasound
122489
Apparantly, i heard that haveing too many ultrasounds when your pregnant can cause your baby to be left handed. I saw that on the new about 5 years ago.
77822
Hi!\nI change my field of study from physics to biophysics but still its a great pleasure to solve a problem in physics if you dont mind.\nWish to see your project.\nBye
360216
Interesting article on the effects of daycare and Preschool\n\nhttp://www.signonsandiego.com/uniontrib/20051101/news_1n1earlyed.html
211712
http://www.digitalnaturopath.com/cond/C383505.html\nhttp://www.motherhood.com.au/mother/postnatalProblems.htm\nGood Luck
90506
Humans can't output more than a watt or so of acoustical power (ref.). The resonant frequency of an elephant's head cavities would be related to a length no greater than its diameter, let's say about 2 feet or less, so about a few hundred Hz and up. At those frequencies one would expect the skin, fat and cranium to absorb a considerable percentage of incoming acoustical power. So this leaves maybe a few hundred milliwatts entering, say the ear. The extremely responsive parts of the ear could be permanently damaged. Other head parts will be thicker and more massive, resulting in much smaller response. Physical destruction of the brain seems very unlikely, but one couldn't rule out psychological damage.
536516
Hormonal activity is usually a negative feed back mechanism. You would think exercise would feed forward, though, as the rate would keep increasing. Not my area, though, so a functional biologist is needed here.
436326
You might try posting this question in the general biology area, it seems to get a bit more traffic than over here. Good luck.
176523
This is a great site for students:\nhttp://www.cancerquest.org/index.cfm?page=2225\n\nI have used it in my classroom to investigate the biology behind cancer! Hope it helps!
97004
You can try webmd.com   It may give you some information you are looking for.
262157
What you really need a SOUND Lecture.\n\n- Introduction to sound waves, review of basic physics. \n- Review of basic physics; vibrational systems.  \n- Vibrational systems. \n- Waves. \n- Waves, speed of sound. \n- Resonance, harmonic series on strings.  \n- Harmonic series in pipes, sympathetic vibrations.  \n- Hearing.  \n- Logarithms in music, pitch. \n\nand lots more... at\n\nhttp://www.physics.cornell.edu/courses/p204/lectures2006.html
497930
An  ultrasound is no problem.  They will want to do it on your skin and not through clothes, however.  Wear something you can just pull up or, as my doc want me to do, slip on the hospital gown so you don't get the gel on your clothes.  The gel just helps the sound waves glide smoothly into your abdomen.  Zero pain involved and as the others before me have said, Congratulations on your new baby!
162601
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20101/Bio%20101%20Lectures/DNA/dna.htm
443401
Echogenic just means that it's visible on ultrasound because it, or structures within it, reflect high frequency sound waves.\n\nThe most commoncause of this is a cyst or polycystic kidney disease but there are other differential diagnoses.
70160
good luck: http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPLANTANAT.html
369557
http://www.biologie.uni-hamburg.de/b-online/e02/form.htm
496016
Well the BBC tells us, in the UK scientists have applied for permission to create embryos by fusing human DNA with cow eggs.   That's interesting.\n   National Public Radio has an interesting article on the value of pomegranates, in which I learned new data.  NPR's All Things Considered program had an article called "Does Red Wine Fuel the Fountain of Youth?"  regarding testing wine consumption on mice.\n  The way sunshine changes human's lives is a subject newsworthy as well as well documented.  SAD (Seasonal Affective Disorder) affects a huge population and is especially newsworthy now due to the change from daylight savings time.  I've attached a link from the National Mental Health Association, but a dogpile.com search brought up lots of credible sources.  Good luck - if you have internet or library access you have the path to a paper with "Excellent" written in red across the top!
75337
I am a medical sonographer and have done many liver ultrasounds.  Not sure what your question is....I hope you get good results tomorrow!