Sentences with phrase «not at fertilization»

Women's bodies tell them at implantation that they are pregnant not at fertilization.

Not exact matches

Thirty years ago, when she was a medical student helping to create in - vitro fertilization babies at Toronto's East General Hospital, and never thought she'd be asked whether or not we should eat hamburgers made in test tubes.

Not all religions believe life begins at fertilization, some put it later, otherwise there are also issues of even internal to religions there are debates as to when life begins.

She had apparently got to the point where she honestly did not know that a child is the natural fruit of a union between a man and a woman: in her understanding «sex» is something done for pleasure, according to one's desires, whether lesbian or homosexual or whatever, and procreation an entirely different matter connected with options presented at various times, possibly involving in - vitro fertilization and test - tubes.

And when I was honest with myself, I had to admit that I don't know exactly when life begins (at fertilization?

Unfortunately, no matter how a child comes into the world, through the operation of natural causes, through in vitro fertilization, or eventually through cloning, we have not been and, no doubt, will not be «ravished with admiration at every childbirth in the world.»

@Rbnlegnd101 The logic is Cathlic church teaches life begins at conception, since conception / fertilization can still occur while using the birth control (implantation can not) that would be an ethical issue.

«There is substantial medical evidence that an unborn child is capable of experiencing pain at least by 20 weeks after fertilization, if not earlier,» states H.R. 36, introduced by Arizona Republican Trent Franks.

Dr. Fady Sharara and the staff at our Virginia fertility center not only offer patients success rates for in vitro fertilization (IVF) that consistently fall above the national average, but we also offer a unique 100 % IVF Refund Plan.

Our policy states that women who are active smokers may not participate in our in vitro fertilization program until they have quit smoking for at least six weeks.

Experiments in zero gravity with rats, quail eggs, jellyfish and wasps have not been promising for fertilization, implantation or gestation, with different problems arising within each species and at each stage.

Uller is at a loss to explain why fertilization does not occur without constant male companionship: «There's something missing, and what that is I can't say.»

When he tested soils from the experimental plots, he saw soil organic carbon concentrations rise gradually with increases in nitrogen fertilization at soil depths from 0 to 6 inches, although not at deeper ones.

For example, embryologist Jacques Cohen, scientific director at the Institute for Reproductive Medicine and Science of Saint Barnabas in Livingston, New Jersey, has developed a procedure called cytoplasmic transfer that shows promise for assisting women approaching their early forties who either can't get pregnant through in vitro fertilization or have embryos of such poor quality they don't survive.

Although the disease appears to be caused by a genetic defect, it doesn't run in families, suggesting that the mutation occurs randomly in egg or sperm cells or at some point after fertilization.

Although the statistics on the failure rate of human fertilization are not entirely robust, given the biological and ethical delicacy of conducting research in this area, the numbers consistently suggest that, at minimum, two - thirds of all human eggs fertilized during normal conception either fail to implant at the end of the first week or later spontaneously abort.

«Although the role of synergid cells has been identified, we did not exactly know how the persistent synergid cell is degenerated and induces the polytubey block mechanism upon successful fertilization,» says Daisuke Maruyama, an Assistant Professor at Nagoya University who is the first author and leader of this research.

«Our findings were quite surprising because females typically just select sperm from males of their own species during fertilization, an action that does not lead to long - term consequences because there is no gene flow between the species,» said Asher Cutter, associate professor of ecology and evolutionary biology at the University of Toronto.

Today, Roe said three outside labs have determined those two lines were not derived from cloned embryos, but instead came from embryos created by in vitro fertilization at MizMedi Hospital in Seoul, which collected oocytes for Hwang's research.

«But most men with fertility problems don't make viable sperm at all or make too little for even assisted fertilization to work,» he added.

Females are not just the arenas where fertilization occurs, they are active participants with seemingly unlimited potential to influence the outcome of sex in different ways, and at different points during the reproductive saga.

I'm a plant growing aquaticist — who does NOT use CO2 fertilization but whose tank is overrun with plants anyway — mainly because I use a wet - dry filtered reef tank with a closed top where the water is mixed with air in large quantities in the sump keeping the amount of CO2 and O2 at optimal levels.

These are all things that climate change model should take into account to arrive at better predictions of the future, but the full effects of this nitrogen fertilization aren't yet entirely clear.

Note 1: the NAS study includes ocean iron fertilization, which I haven't included in the above graphic because «previous studies nearly all agree that deploying ocean iron fertilization at climatically relevant levels poses risks that outweigh potential benefits.»

The point is that, not only will the biosphere expand by CO2 fertilization, but also the species, whether of plants or bacteria or phytoplankton, that fare better at higher atmospheric CO2 because they themselves are better at using it, those species will expand at the expense of those that don't like CO2 that much.

One is CO2 fertilization and the other is N fertilization... either or both could occur and would increase in general at the same time and amount wrt human fossil fuel burning.

As I understand it, tree ring widths are not 100 % correlated with temperature — we understand that, at the very least, they are affected by precipitation and fertilization.

Nitrogen could partially counterbalance O3effects on aboveground biomass when the levels of O3 were moderate, but at the same time O3 exposure reduced the fertilization effect of higher N availability.

«While I am happy to see profit - driven startups drive innovation, I think tying ocean fertilization to carbon credits was a sterling example of how not to govern climate engineering, and I am therefore concerned to see a closely linked organization at the center of a meeting on governance.

And taken globally, increases in tropical forest carbon may be at least partly explained not by carbon fertilization, but by a recovery of carbon after past disturbances such as fire (both natural and anthropogenic) and land clearing by humans even centuries earlier - a factor that will reduce sink strength over time as forests recover.

Nevertheless, in view of the serious risks we are presently taking with our global climate, I feel that considering iron fertilization as a possible means for purposeful co2 sequestration can not be entirely dismissed at this point.»

Research performed at Stanford and Oregon State Universities suggests that ocean fertilization may not be an effective method of reducing carbon dioxide in the atmosphere, a major contributor to global warming.

However, according to Professor Rosemary Rayfuse, an expert in International Law and the Law of the Sea at the University of New South Wales, Australia, who also attended the Woods Hole meeting, ocean fertilization projects are not currently approved under any carbon credit regulatory scheme and the sale of offsets or credits from ocean fertilization on the unregulated voluntary markets is basically nothing short of fraudulent.

92.2 Gt - C = 70 (preindustrial) +22.2 Gt - C to 80 Gt - C = 60 (preindustrial) +20 Gt - C while the absorption by terrestrial vegetation went up from 122.6 Gt - C = 120 (preindustrial) + 2.6 Gt - C to 123 Gt - C = 108.9 (preindustrial) + 14.1 Gt - C; the change from 2.6 to 14.1 reflects a reassessment of the fertilization by the additional CO2 in the air since the 277 ppm assumed for the «preindustrial», but is still a factor 2 or 3 lower than the observations between 1960 and 2010 related by the papers of Graven & Keeling, Myneni, Donohue, Pretzsch, Hansen and Sun referenced at the end of card n ° 1 (footnote 19).

say it has been predicted that «the average temperature in the semiarid northwest portion of China in 2050 will be 2.2 °C higher than it was in 2002,» and they report that based on the observed results of their study, this increase in temperature «will lead to a significant change in the growth stages and water use of winter wheat,» such that «crop yields at both high and low altitudes will likely increase,» by 2.6 % at low altitudes and 6.0 % at high altitudes... Even without the benefits of the aerial fertilization effect and the anti-transpiration effect of the ongoing rise in the air's CO2 content, the increase in temperature that is predicted by climate models for the year 2050, if it ever comes to pass, will likely lead to increases in winter wheat production in the northwestern part of China, not the decreases that climate alarmists routinely predict.»

Research performed at Stanford and Oregon State Universities, published in the Journal of Geophysical Research, suggests that ocean fertilization may not be an effective method of reducing carbon dioxide in the atmosphere, a major contributor to global warming.

Don't forget that Dr. Idso has been looking at the CO2 fertilization effect for decades and that's at least part of why the bristlecones were studied in the first place.