Vitawworth, a poultry expert at the University of Wisconsin, used the method of transplanting right ovary to make hens produce two eggs per day.
After years of research, Vitavos found that although there are many follicles in the ovary of hens, only the follicles in the left ovary can develop into eggs one by one, but the right ovary is already degraded and it has not been able to develop follicles into eggs. . This is why the hen can only produce one egg at a time. He then performed surgery on the hen and transplanted him with a right ovary. In this way, the follicles can develop into eggs one by one in the transplanted right ovary. Since then, hens can produce two eggs a day. What's more interesting is that these eggs are sometimes produced once.
After the hen has achieved two eggs per day by transplanting the right ovary, the egg production can be greatly increased.
Drop-in kitchen sinks, also called self-rimming sinks, overmount sinks, or top-mount sinks, are sink basins that install and sit on top of your kitchen counter. There is a visible rim or lip on the perimeter of the basin that rests just over the cut-out for the sink. Drop-in sinks are supported by this lip and a series of hidden clips that attach to the underside of the countertop.
The Advantages of Drop-In Sinks
Drop-in sinks have some clear advantages over other styles, especially in the kitchen.
Cost
They`re generally cheaper to buy and easier to install than undermount sinks. In fact, even weekend warriors and DIY newbies should have no problem installing a basic overmount sink. If cost is a consideration in your kitchen, an overmount sink with a do-it-yourself install is a great way to stay within budget.
Cleaning
While cleaning may not be your foremost concern when choosing a kitchen sink, it should be considered. After all, you`ll have to care for and maintain your sink regularly. The basin of an overmount sink is easier to clean than the basin of an Undermount Sink.
Protection
If you`ve got soft countertops, drop-in sinks can help protect the edges of the sink cutout.
- Marble and some specialty counter finishes benefit from the added protection provided by the lip of a drop-in kitchen sink basin. It prevents the build up of water on the surface edges of the stone through repeated exposure of use.
- If you have laminate countertops, drop-in sinks are the only option: the particle board below the laminate surface isn`t strong enough to support undermount sinks but plays well with self-rimming basin types.
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