Types of Water Treatment

Water Conditioners is one of the most efficient water treatment method and the water which comes out from them has low sodium diets .it does not contain Lime scales Water which intakes appliances lasts for a longer period. It increases the efficiency of heat. It also the effectiveness of soap, it retains calcium and it is very good for health, it has low running cost. The disadvantage is that it wont treats any specific hard water problems.The water softeners takes off lime scale, it brings up heating efficiency and it increases the life span of clothes.

Activated carbon water filters are good in removing chlorine from the water and they are also efficient in removing organic efficiency. This filtration does not deal with microbes, sodium,nitrates,fluoridesandhardness.Ultraviolet water filters have maximum fabrication capacity and they kill 99% of the germs they are passing through. But these filters do not remove dead cells and do not kill other contaminants. Water Distillers takes away the natural water cycle processes. Distilled Water is very pure and it is free from all the impurities. It has low Filtration Capacity and high running cost.

Predisposing factors

Predisposing factors

The cause of monozygotic twinning is unknown. Fewer than 20 families have been described with an inherited tendency towards monozygotic twinning (people in these families have nearly a 50% chance of delivering monozygotic twins). Some evidence suggests that the environment of the womb causes the zygote to split in most cases.
Dizygotic twin pregnancies are slightly more likely when the following factors are present in the woman:
She is of African descent (especially Yoruba} Between the age of 30 and 40 years Greater than average height and weight Several previous pregnancies. Women undergoing certain fertility treatments may have a greater chance of dizygotic multiple births. This can vary depending on what types of fertility treatments are used. With in vitro fertilisation (IVF), this is primarily due to the insertion of multiple embryos into the uterus. Some other treatments such as the drug Clomid can stimulate a woman to release multiple eggs, allowing the possibility of multiples. Many fertility treatments have no effect on the likelihood of multiple births.
There is also speculation that the West African predisposition to twinning is due to the large amount of yams in their diet. These yams contain phytoestrogen, this natural hormone may stimulate the ovaries.

Miscarried twin

Miscarried twin

Occasionally, a woman will suffer a miscarriage early in pregnancy, yet the pregnancy will continue; one twin was miscarried but the other was able to be carried to term. Similar to vanishing twin.
Human twinsHistorically, about 1 in 80 human births (1.2%) has been the result of a twin pregnancy. The rate of twinning varies greatly among ethnic groups, ranging as high as about 6% for the Yoruba or 10% for a tiny Brazilian village (see [1]). The widespread use of fertility drugs causing hyperovulation (stimulated release of multiple eggs by the mother) has caused what some call an "epidemic of multiple births". In 2001, for the first time ever in the US, the twinning rate exceeded 3% of all births. Thus, approximately 6% of children born in the US in 2001 were twins.
Nevertheless, the rate of identical twins remains at about 1 in 250 across the globe, further suggesting that pregnancies resulting in identical twins occur randomly.
Multiple births Sometimes multiple births may involve more than two fetuses. If there are three, they are called triplets; four, quadruplets; five, quintuplets; six, sextuplets, seven, septuplets, eight, octuplets, and so on. Before the advent of ovulation-stimulating drugs, triplets were quite rare (approximately 1 in 8000 births) and higher order births so rare as to be almost unheard of. Multiple pregnancies are usually delivered before the full term of 40 weeks gestation: the average length of pregnancy is around 36 weeks for twins, 34 weeks for triplets and 32 weeks for quadruplets.