All polymerizations were conducted in a water/DCM biphasic system in the presence of PEG−PBLG macroinitiators. [I] 0 = 0.5 mM except for the last three entries. ELG, γ-ethyl-L -glutamate; ZLL, e-carboxybenzyl-L -lysine. † Polymerization time reaching 98% monomer conversion. ‡ Obtained MW (designed MW*). § Synthesis of block copolymer through sequential monomer addition. [I] 0 = 1.0, 0.5, and 0.25 mM for the first, second, and third block, respectively. Song et al.

No abstract

Atomic force microscope (AFM) cantilever linear arrays are used for parallel dip‐pen nanolithography (DPN). Three different tip configurations are studied, all of which involve only a single feedback system in a conventional AFM instrument or an Nscriptor, a dedicated instrument designed for DPN. A simple and convenient tip–substrate alignment procedure provides centimeter‐scale, sub‐100 nm resolution patterning (see micrograph image).

Phytosterols are important micronutrients in human diets. Evidence has shown that phytosterols play an essential role in the reduction of cholesterol in blood and therefore decrease cardiovascular morbidity. In this study, the content and composition of phytosterols in different kinds of vegetable oils were analyzed, and the total phytosterol intake and contribution of foods to intake were estimated based on consumption data. The results showed that the phytosterol contents of rice bran oil, corn oil, and rapeseed oil were higher than those of other vegetable oils and the intake of phytosterol in the Chinese diet was about 392.3 mg/day. The main sources of phytosterols were edible vegetable oils (46.3%), followed by cereals (38.9%), vegetables (9.2%), nuts (2.0%), fruits (1.5%), beans and bean products (1.4%), and tubers (0.8%). Among all vegetable oils, rapeseed oil was the main individual contributor to phytosterol intake (22.9%), especially for the southern residents of China.