We study the condition, on a connected and locally connected geometric morphism p : E → S, that the canonical natural transformation p∗ → p! should be (pointwise) epimorphic — a condition which F.W. Lawvere [11] called the ‘Nullstellensatz’, but which we prefer to call ‘punctual local connectedness’. We show that this condition implies that p! preserves finite products, and that, for bounded mo...

Background: Iron overload can cause many complications and damage many organs as well as physiologic functions. Consumption of phetochemicals and flavonoids with iron chelating ability, instead of synthetic iron chelators, can be less harmful and more effective. The aim of this review is to investigate hydrophilic phytochelators in iron overload condition. Methods: In this review, the possible ...

despite its matchless impact and age-old functioning in the establishment of peace all through the history, the theory of natural law remains neglected among the popular theories at the international level. domination of legal positivism, and schools of its like, has always blocked any natural healing to the ailing condition of the contemporary international system, hence some artificial and fe...

introduction ownership is an important element for sustainability development in natural resource management. rangelands vegetations are important factor for produce in traditional herding therefore recognition of different utilization methods and management of this vegetation resource production for animal grazing and rangelands condition is very important. so this research carried out in 2009...

In the vicinity of Svobodny in Amur Region, there are world’s largest natural gas processing and helium production enterprises. this regard, relevance an objective assessment environmental situation is especially important. work, author defines indicator properties Scots pine regeneration. He gives analysis undergrowth parameters areas with different degrees anthropogenic load. It established t...

The recognition of spatial structures is important for color constancy because we cannot identify an object's color under different illuminations without knowing which space it is in and how that space is illuminated. To show the importance of the natural structure of environments on color constancy, we investigated the way in which color appearance was affected by unnatural viewing conditions ...