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Core-crosslinked star polymers, which have polyethylene oxide (PEO) as a shell and cross-linked poly(2-[4'-iodobenzoyloxy]-ethyl methacrylate) (PIEMA) with benzophenone derivatives as a core, have been successfully synthesized by an “arm-first” method. PEO-b-PIEMA was prepared via atom transfer radical polymerization (ATRP) of 2-[4'-iodobenzoyloxy]-ethyl methacrylate (4-IEMA) with preformed PEO-Br as a macroinitiator. Core-crosslinked star polymers (CCSP) were efficiently synthesized by ultrafast carbonylation reactions under air by flash microwave irradiation in the presence of dicobalt octacarbonyl in 6 min. Gel permeation chromatography (GPC) trace of CCSP showed a drastic shift to a higher molecular weight when compared to precursor polymer, PEO-b-PIEMA diblock copolymer, indicating that the carbonylation reaction was fully progressed. The CCSP with benzophenone was successfully immobilized on a silicon wafer through a photochemical reaction under UV irradiation.
Purpose: With extended life expectancy, the mean age of patients at the time of diagnosis of colorectal cancer and its treatment, including radical resection, is increasing gradually. We aimed to evaluate the impact of age on postoperative clinical outcomes after a laparoscopic resection of colorectal cancers. Methods: This is a retrospective review of prospectively collected data. Patients with primary colorectal malignancies or premalignant lesions who underwent laparoscopic colectomies between January 2009 and April 2013 were identified. Patients were divided into 6 groups by age using 70, 75, and 80 years as cutoffs: younger than 70, 70 or older, younger than 75, 75 or older, younger than 80, and 80 or older. Demographics, pathological parameters, and postoperative clinical outcomes, including postoperative morbidity, were compared between the younger and the older age groups. Results: All 578 patients underwent a laparoscopic colorectal resection. The overall postoperative complication rate was 21.1% (n = 122). There were 4 cases of operative mortality (0.7%). Postoperative complication rates were consistently higher in the older groups at all three cutoffs; however, only the comparison with a cutoff at 80 years showed a statistically significant difference between the younger and the older groups. Conclusion: Age over 80 is a possible risk factor for postoperative morbidity after a laparoscopic resection of colorectal cancer.
The study of Eastern philosophy for building evacuation in the ‘Taoism' to explore the Western architects of the evacuation of the attributes listed in a lot of Louis I. Kahn's philosophy of building through the 'void' I can see the meaning of Louis I. Kahn and was to analyze the relationship between the Lao-tzu. The core of the Lao-tzu to have to go back to the fundamental norms against any of the artificial nature of the claims of the regression. This is Kahn's Salk Institute for Biological Studies show the nature of things through an inner court meeting with the root of the idea that you want to find the basis and the response will be returning to, in the pursuit of modern architecture by the uniformity of space Loss of response to the architecture of relativity, which in itself represents the center disposition in the internal space that will be raised a grade of rank and order to find the root of the construction of a series of action points to a natural end, that Lao-tzu And that the unity in the meeting said.