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22.898 Aktuelle Fachpublikationen zum Thema temperature

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Stem cells in the development and differentiation of the human adrenal glands

18.10.2014 | Tadashi Terada, Microscopy Research and Technique, 2014

ABSTRACT There are no studies on stem cells (SCs) and development and differentiation (DD) of the human adrenal glands. The SCs in DD of the adrenal glands were herein investigated histochemically and immunohistochemically in 18 human embryonic adrenal glands at gestational week (GW) 7–40. At ...

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Biochemical and morphological alterations in the Achilles tendon of mdx mice

18.10.2014 | Andrea Aparecida Aro, Flávia Guerra, Marcelo Augusto Marretto Esquisatto, Wilson Romero Nakagaki, Laurecir Gomes, Ed ..., Microscopy Research and Technique, 2014

ABSTRACT Dystrophin‐deficient muscles have repeated cycles of necrosis and regeneration, being susceptible to injury induced by muscle contractions. Some studies have demonstrated that tendons are also affected in mdx mice, based especially on the changes in biomechanical properties arising ...

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Synthesis via ATRP, kinetics study and characterization (molecular‐morphological) of 3‐Arm star diblock copolymers of the (PS‐b‐P2VP)3 type

18.10.2014 | George Polymeropoulos, Dimitrios Moschovas, Anastasia Kati, Apostolos Karanastasis, Styliani Pelekanou, Panagiotis C ..., Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT The synthesis of five homopolymers (PS)3 and the corresponding diblock copolymer 3‐arm stars of the (PS‐b‐P2VP)3 type is reported through atom transfer radical polymerization. Such star homo‐ and copolymers are prepared without any addition of solvent (bulk polymerization). The ...

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RAFT polymerization kinetics and polymer characterization of P3HT rod–coil block copolymers

18.10.2014 | Melissa R. Kern, Stephen G. Boyes, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Here an in‐depth analysis of reversible addition–fragmentation chain transfer (RAFT) polymerization kinetics is reported in order to provide better definition of poly(3‐hexylthiophene) (P3HT) rod–coil block copolymers thru a more thorough understanding of the RAFT polymerization of ...

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Thieno[3,2‐b]thiophene‐substituted benzodithiophene in donor–acceptor type semiconducting copolymers: A feasible approach to improve performances of organic photovoltaic cells

18.10.2014 | Ji‐Hoon Kim, Hee Su Kim, Jong Baek Park, In‐Nam Kang, Do‐Hoon Hwang, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Thieno[3,2‐b]thiophene‐substituted benzo[1,2‐b:4,5‐b′]dithiophene donor units (TTBDT) serve as novel promising building blocks for donor–acceptor (D‐A) copolymers in organic photovoltaic cells. In this study, a new D‐A type copolymer (PTTBDT‐TPD) consisting of TTBDT and ...

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Numerical modeling of multilayer film coextrusion with experimental validation

18.10.2014 | James Champion, M. Kieran Looney, Mark J.H. Simmons, Polymer Engineering and Science, 2014

Computational fluid dynamics (CFD) using a finite volume technique and the volume of fluid method of interface tracking is used to model the production of polyester‐based multilayered films via coextrusion. Experimental methods encompass both overall flow validation and secondary layer thickness ...

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Solubilization of graphene flakes through covalent modification with well‐defined azido‐terminated poly(ε‐caprolactone)

18.10.2014 | Nabihah Abdullah, Kazuya Hatano, Daiki Ando, Masataka Kubo, Akira Koshio, Fumio Kokai, Journal of Applied Polymer Science, 2014

ABSTRACT A well‐defined poly(ε‐caprolactone) (PCL) with terminal azido group was prepared. Grafting‐on reaction between the azido‐terminated PCL (N3PCL) and ultrasonication‐assisted exfoliated graphene flakes (GF) was carried out to obtain PCL‐grafted‐GF (PCL‐g‐GF) which showed good ...

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pH‐sensitive keratin‐based polymer hydrogel and its controllable drug‐release behavior

18.10.2014 | Juhua Guo, Sujuan Pan, Xiaochun Yin, Yu‐Feng He, Tao Li, Rong‐Min Wang, Journal of Applied Polymer Science, 2014

ABSTRACT Using feather keratin as biocompatible and inexpensive natural biopolymer and methacrylic acid as a functional monomer, we prepared a pH‐sensitive feather‐keratin‐based polymer hydrogel (FKPGel) with grafted copolymerization. The obtained FKPGel was characterized by Fourier transform ...

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Preparation, swelling properties, and displacement performance of functional amphiphilic microspheres

18.10.2014 | Peng Zhang, Yuanjun Dong, Wenzhang Huang, Zhenfu Jia, Chengyu Zhou, Maolei Guo, Haiyang Yu, Journal of Applied Polymer Science, 2014

ABSTRACT Because polymers containing benzyl chloromethyl groups are easily modified for functional production, the dispersion polymerization of acrylamide, 4‐vinylbenzyl chloride, and N,N‐methylene bisacrylamide in dimethylformamide initiated with α,α‐azobisisobutyronitrile was carried out to ...

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Synthesis and effects of MDT silicone resin on PMPS‐based ablative composites

18.10.2014 | Qiuhong Mu, Dan Peng, Wei Ju, Fangzhi Zhang, Chengguo Wang, Journal of Applied Polymer Science, 2014

ABSTRACT A novel methylphenyl silicone resin, with M, D, and T units, was synthesized by cohydrolysis and cocondensation method from dimethyldimethoxysilane (Me2Si(OMe)2), phenyltrimethoxysilane (PhSi(OMe)3), hexamethyldisiloxane, and 1,3‐divinyl‐1,1,3,3‐tetramethyldisiloxane in toluene/water ...

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