نتایج جستجو برای: پلیلاکتیک اسید pla

تعداد نتایج: 26418  

Journal: :Biomacromolecules 2006
Jinwen Zhang Long Jiang Linyong Zhu Jay-Lin Jane Perminus Mungara

Blends of soy protein (SP) and a semicrystalline polylactide (PLA) were prepared using a twin-screw extruder. The melt rheology, phase morphology, mechanical properties, water resistance, and thermal and dynamic mechanical properties were investigated on specimens prepared by injection molding of these blends. The melt flowability of soy-based plastics was improved through blending with PLA. Sc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه پلیمر و پتروشیمی ایران - پژوهشکده فرایند 1392

با توجه به اینکه استفاده از پلیمرهای بر پایه مشتقات نفتی که سرعت تخریب بسیار پایینی دارندآسیب های جدی به محیط زیست رسانده است؛ امروزه استفاده از پلیمرهای زیست تخریب پذیر که از منابع تجدیدشدنی به دست می آیند در صنایع مختلف بسیار مورد توجه قرارگرفته است.یکی از این پلیمرها، پلی لاکتیک اسید(pla) می باشد. هدف از این تحقیق بررسی اثر حضور ذرات نانورس و نشاسته ی اصلاح شده روی خواص پلی لاکتیک اسید شبکه ...

Journal: :Journal of Experimental Botany 2008
Jiyoung Seo Hyoung Yool Lee Hyunju Choi Yunjung Choi Yuree Lee Yong-Woo Kim Stephen Beungtae Ryu Youngsook Lee

Phospholipase A(2) (PLA(2)) catalyses the hydrolysis of phospholipids into lysophospholipids and free fatty acids. Physiological studies have indicated that PLA(2) is involved in stomatal movement. However, genetic evidence of a role of PLA(2) in guard cell signalling has not yet been reported. To identify PLA(2) gene(s) that is (are) involved in light-induced stomatal opening, stomatal movemen...

2010
Ashis K Mukherjee

Present study shows that non-covalent interaction of kaouthiotoxin (KTX) with their respective pohospholipase A(2) (PLA(2)) from the venom of N. kaouthia displayed marked synergism to exert cytotoxicity without altering the biochemical properties of PLA(2). For example, although NK-PLA(2) or KTX alone did not induce appreciable hemolysis of washed human erythrocytes; however, the hemolytic pote...

Mahsa Tabari, Mohadeseh Famil Zirak

Objective(s): Application of eco-friendly materials like poly lactic acid (PLA) is increasing, to reduce environmental pollutions. In this research, the effect of silicon dioxide 1%, 3% and 5% nanoparticles on morphological, mechanical and chemicals interaction (FTIR) of PLA film was studied. Materials and Methods: Scanning electron microscope (SEM) was used, ...

2012
Jie Xu Ji-Hui Zhao Ying Liu Nian-Ping Feng Yong-Tai Zhang

OBJECTIVE The purpose of this study was to develop an active targeting strategy to improve the therapeutic antitumor efficacy of oridonin (ORI), the main active ingredient in the medicinal herb Rabdosia rubescens. METHODS A modified spontaneous emulsification solvent diffusion method was used to prepare the ORI-loaded atactic poly(D,L-lactic acid) nanoparticles (ORI-PLA-NPs). Surface cross-li...

Journal: :Journal of animal science 2009
J P Wang J S Yoo J H Lee H D Jang H J Kim S O Shin S I Seong I H Kim

Ninety weanling pigs in Exp. 1 (6.27 +/- 0.73 kg; 21 d of age) and 96 growing pigs in Exp. 2 (21.73 kg +/- 1.29 kg; 56 d of age) were used in two 42-d experiments to evaluate the effect of phenyllactic acid (PLA) on growth performance, apparent total tract digestibility (ATTD) of DM and N, fecal pH value, microbial shedding, and blood profiles. In Exp. 1, the 3 dietary treatments were 1) negati...

2013
Hideto Mishina Kazuhiro Watanabe Shun Tamaru Yosuke Watanabe Daisuke Fujioka Soichiro Takahashi Koji Suzuki Takamitsu Nakamura Jun-ei Obata Kenichi Kawabata Yasunori Yokota Osamu Inoue Makoto Murakami Kohji Hanasaki Kiyotaka Kugiyama

Subject codes: [108] Other myocardial biology [145] Genetically altered mice, [151] Ischemic biology-basic studies In November 2013, the average time from submission to first decision for all original research papers submitted to Circulation Research was 14.6 days. ABSTRACT Rationale: Recent evidence indicates that the biological effects of secretory phospholipase A 2 s (sPLA 2) cannot be fully...

2014
Xiangrui Yang Shichao Wu Yange Wang Yang Li Di Chang Yin Luo Shefang Ye Zhenqing Hou

We present a dialysis technique to prepare the 10-hydroxycamptothecin (HCPT)-loaded nanoparticles (NPs) using methoxypolyethylene glycol-poly(D,L-lactide) (PEG-b-PLA) and PLA, respectively. Both HCPT-loaded PEG-b-PLA NPs and HCPT-loaded PLA NPs were characterized by differential scanning calorimetry (DSC), dynamic light scattering (DLS), transmission electron microscopy (TEM), scanning electron...

2017
Camila Macedo da Luz Matthew Samuel Powys Boyles Priscila Falagan-Lotsch Mariana Rodrigues Pereira Henrique Rudolf Tutumi Eidy de Oliveira Santos Nathalia Balthazar Martins Martin Himly Aniela Sommer Ilse Foissner Albert Duschl José Mauro Granjeiro Paulo Emílio Corrêa Leite

BACKGROUND Poly-lactic acid nanoparticles (PLA-NP) are a type of polymeric NP, frequently used as nanomedicines, which have advantages over metallic NP such as the ability to maintain therapeutic drug levels for sustained periods of time. Despite PLA-NP being considered biocompatible, data concerning alterations in cellular physiology are scarce. METHODS We conducted an extensive evaluation o...

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