In the identification process of weed materials available in "IRAN" herbarium, a specimen belonging to the genus Lactuca (Asteraceae) had the following characteristics: Plant annual, many stemmed from base; stem erect-slightly procumbent, slender, glabrous, whitish and leafy. Basal leaves dried; stem leaves ca. 7 × 0.5 cm, glabrous, linear-lanceolate, entire at margin, sessile, auriculate, auri...

Preface These are basically the lecture notes for the short course Applications of Combinatorics to 2012. With the objective of covering a full course on secret sharing, additional content will be added in subsequent versions of these lecture notes. Secret sharing, which was independently introduced in 1979 by Shamir [49] and Blak-ley [6], is one of the most widely studied topics in information...

These notes are based on research conducted at the University of Chicago. They represent a more self-contained version of a chapter from my dissertation [C1]. [Note added in 2006: Some of these ideas more recently appeared in [C2], [C3], and [C4].] The main result of [C1] established a normal form for a generic complex tangent of a real m-submanifold in a complex n-manifold, in the case m < n. ...

The first edition of Human Structure was published in 1972 for use as an anatomy text. Since then, most medical schools have significantly decreased the time allotted to gross anatomy. This new edition is designed to fit a shortened anatomy course. The outline is unchanged from the previous edition, with 57 short chapters organized in eight general sections. The first section, "General Introduc...

I have a family history of diabetes, so I try and control my sugar intake. I am having a lot of trouble figuring out how much sugar is the maximum amount of sugar to allow in my diet. I have read that "added sugar" intake should be limited to no more than ten percent of your daily calories, but I have no idea how to determine what amount of sugar in food is natural versus added. I assume that a...