There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Polymer/layered silicate nanocomposites: a review from preparation to processing

介绍了Kirk—Othmer Encyclopedia of Chemical Technology（化工技术百科全书）（第五版）电子图书网络版数据库，并对该数据库使用方法和检索途径作出了说明，且结合实例简单地介绍了该数据库的检索方法。

Kirk-Othmer Encyclopedia of Chemical Technology数据库介绍及实例

Although conventional chemotherapy has been successful to some extent, the main drawbacks of chemotherapy are its poor bioavailability, high-dose requirements, adverse side effects, low therapeutic indices, development of multiple drug resistance, and non-specific targeting. The main aim in the development of drug delivery vehicles is to successfully address these delivery-related problems and carry drugs to the desired sites of therapeutic action while reducing adverse side effects. In this review, we will discuss the different types of materials used as delivery vehicles for chemotherapeutic agents and their structural characteristics that improve the therapeutic efficacy of their drugs and will describe recent scientific advances in the area of chemotherapy, emphasizing challenges in cancer treatments.

/pdf/controlled-drug-delivery-vehicles-for-cancer-treatment-and-1osv5b96qe.pdf

Controlled drug delivery vehicles for cancer treatment and their performance.

New polylactide (PLA)/layered silicate nanocomposites have been prepared successfully by simple melt extrusion of PLA and organically modified montmorillonite. The d spacings of both the organically modified montmorillonite and intercalated nanocomposites were investigated by wide-angle X-ray diffraction (WAXD) analysis, and the morphology of these nanocomposites was examined by transmission electron microscopy (TEM). Using oligo(e-caprolactone) (o-PCL) as a compatibilizer, the effect of compatibilizer in nanocomposites was investigated by focusing on two major aspects:  morphological analysis and mechanical property measurements. The intercalated nanocomposites exhibited remarkable improvement of materials properties in both solid and melt states as compared to that of PLA matrices without clay.

New Polylactide/Layered Silicate Nanocomposites. 1. Preparation, Characterization, and Properties

A hierarchical structure and properties of intercalated polypropylene/clay nanocomposites

Intercalated nanocomposites of polypropylene (PP)/clay (PPCNs) were prepared by a melt extrusion process using maleic anhydride modified PP (PP-MA) and organophilic clay The extent of intercalation of PP-MA chains in the space between silicate galleries increased with crystallization temperature Tc and decreased as clay content increased As compared to matrix PP-MA, the dispersed clay particles in the PP-MA matrix acted as a nucleating agent and lowered the spherulite dimension with increasing clay content as revealed by light scattering experiments and polarizing optical microscopy The PPCN crystallized at high Tc showed that a certain extent of segregation of the dispersed clay particles takes place around the boundary of the spherulites (interspherulite) Extensive intercalation occurred during crystallization, especially at high Tc due to the long time for full solidification of the melt The degree of intercalation of PP-MA chains in the silicate galleries strongly depends on the time in the molte

/pdf/influence-of-crystallization-on-intercalation-morphology-and-3pzwxnzzzl.pdf

Pralay Maiti

Papers

Controlled drug delivery vehicles for cancer treatment and their performance.

New Polylactide/Layered Silicate Nanocomposites. 1. Preparation, Characterization, and Properties

A hierarchical structure and properties of intercalated polypropylene/clay nanocomposites

Influence of Crystallization on Intercalation, Morphology, and Mechanical Properties of Polypropylene/Clay Nanocomposites

Dramatic Enhancements in Toughness of Polyvinylidene Fluoride Nanocomposites via Nanoclay‐Directed Crystal Structure and Morphology