A new study in United Kingdom says if the pregnant women lack of vitamins and other micronutrients, the new birth would face risk of lower weight. The study also showed that supplement the micronutrient for pregnant women is also good for their bodies. Researchers from British Institute of Brain Chemistry and Human Nutrition Research Institutions had published the study on British Journal of Nutrition, according to a survey on the poorer parts in east London, 72% of the pregnant women lack of the micronutrient. Besides, they lack of iron, folic acid and other micronutrients needed by the body.

The researchers asked about local 400 pregnant women for this trial, they were divided into two groups, one group taken composite micronutrients tablets including vitamin D, iron, folic acid and other micronutrients while the other group didn’t do nothing. The results showed that the average weight of babies born by the pregnant women in the second group was lighter than the babies born by the test group. But the proportion of weight infants is higher. In addition, on health indicators related to these micronutrients, the pregnant women in the experimental group are better than the second group.

Bluff, one of the researchers, said low weight infants may lead to breathing difficulties and other diseases. What’s worse, the risk of suffering from heart disease is higher in adulthood.

A new LED design employs a handy combination of light and phosphors to produce light whose color spectrum is not so different from that of sunlight.

Light emitting diodes (LEDs) convert electricity into light very efficiently, and are increasingly the preferred design for niche applications like traffic and automobile brake lights. To really make an impression in the lighting world, however, a device must be able to produce room light. And to do this one needs a softer, whiter, more color balanced illumination.

The advent of blue-light LEDs, used in conjunction with red and green LEDs, helped a lot. But producing LED light efficiently at blue, red, and yellow wavelengths is still relatively expensive, and an alternative approach is to use phosphors to artificially achieve the desired balance, by turning blue into yellow light. Scientists at the National Institute for Materials Science and at the Sharp Corporation, in Japan, have now achieved a highly efficient, tunable white light with an improved yellow-producing phosphor . Their light yield is 55 lumens per watt, about twice as bright as commercially available products operating in the same degree of whiteness.