anionic polymerization and anionic polymers
Biodegradable Dendrimers and Dendritic Polymers
... relation of biodegradability and biocompatibility, and its biological implications Tomalia and Newkome et al introduced well-defined and highly branched dendrimers [5, 15], and almost a decade later, ... Biodegradable Dendrimers and Dendritic Polymers 43 Dharap, S.S., Wang, Y., Chandna, P., 44 45 46 47 48 49 50 51 Khandare, J.J., Qiu, B., Gunaseelan, S., Stein, S., Farmanfarmaian, A., and Minko, T (2005) ... biodegradation and their biological implications 10.2.1 Is Biodegradation a Critical Measure of Biocompatibility? In the past, many polymers have been proven clinically safe For example, PEG and PLGA polymers...
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Báo cáo khoa học: The importance of polymerization and galloylation for the antiproliferative properties of procyanidin-rich natural extracts doc
... mean degree of polymerization and percentage of galloylation, with their antiproliferative potential and their scavenging capacity for hydroxyl and superoxide anion radicals Results and Discussion ... IVP, VIP and OWP) reduced proliferation of the carcinoma cell line HT29 dosedependently with IC50 values between 100 and 200 lm and IC80 values between 200 and 300 lm, whereas the IC50 and IC80 ... prevention or treatment and the degree of polymerization related to the bioavailability in the colon Procyanidins and monomeric catechins (Fig 1) are the main active polyphenols in grape and pine bark...
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Báo cáo khoa học: Branched chain mechanism of polymerization and ultrastructure of prion protein amyloid fibrils ppt
... mechanism of polymerization I V Baskakov The nucleation -polymerization model ThT lluorescence A elongation nucleation Time The branched chain mechanism ThT lluorescence B elongation and fragmentation ... kinetics of rPrP polymerization (A) The nucleation -polymerization model postulates that fibrillation consists of two consecutive stages: nucleation that accounts for a lag-phase and elongation (B) ... mechanism predicts that the length of the lag-phase and the polymerization rate are controlled by the r-value Schematic representation of four polymerization reactions that are carried out under...
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Báo cáo hóa học: " Core shell hybrids based on noble metal nanoparticles and conjugated polymers: synthesis and characterization" ppt
... by polymerization of adsorbed and solution-free monomers [45,46] and the reduction of Ag salts in polymer micelles [47] Both hydrophilic and hydrophobic polymers [48,49] have been tested and ... defined and stable polymeric shell Figure a: UV-Vis absorption spectra of samples Au@P (DMPAHCl) and Ag@P(DMPAHCl) and b: Ag, Au and Pt core shell in water suspensions image (yellow, pink and grey, ... contributions IV, IF and MVR carried out the synthesis and characterizations and drafted the manuscript, CC light scattering characterizations, CB and GP carried out XPS studies All authors read and approved...
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Báo cáo hóa học: " Facile Preparation of Crosslinked Polymeric Nanocapsules via Combination of Surface-Initiated Atom Transfer Radical Polymerization and Ultraviolet Irradiated " docx
... Chemicals Co Ltd., China) was dried over CaH2 and distilled under reduced pressure Triethylamine (TEA) and tetrahydrofuran (THF) were dried by CaH2 overnight, and then distilled under reduced pressure ... tetrahydrofuran (THF), ethanol, hydrofluoric acid, and other solvents used were all of analytical reagent grade and obtained from Tianjin Chemical Co., Tianjin, China, and were used without further purification ... collected by centrifugation, washed thoroughly with THF, and dried under vacuum Analysis and Characterization Elemental analysis (EA) of C, N, and H was performed on Elementar vario EL instrument...
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ADF/COFILIN ACTIVATION REGULATES ACTIN POLYMERIZATION AND TENSION DEVELOPMENT IN CANINE TRACHEAL SMOOTH MUSCLE
... essential for both the actin polymerization and depolymerization processes during cell movement: It binds to actin filaments and severs them, thereby promoting actin disassembly and the formation of ... to forskolin and isoproterenol in cultured human airway smooth muscle cells (95) Another study from Hellstrand and colleagues has shown that stretch induced actin polymerization and increased ... the interaction between LIMK and SSH Bernaard and colleagues proposed a reciprocal control of LIMK1 and SSH1L activity, and that SSH1L can directly dephosphorylate and regulate LIMK1 activity...
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DESIGN, SYNTHESIS AND PROPERTIES OF METAL COMPLEXES AND COORDINATION POLYMERS FOR 2+2 PHOTO CYCLOADDITION REACTIONS
... current and previous friends in Singapore, Anand, Durga, Deva, Gopal, Dr Vasu, Venu and many more for their help and association I want to pay my deep regards and gratitude to all my teachers and ... CPs and its photo reactivity which are synthesized from using Cd2+, 1,4-benzenedicarboxylate as linker and 4spy and its derivatives as photoreactive ligand Among these, the CP with 4spy ligand ... Mangayarkarasi for her great moral support and inspiration I thank Anjana for her direct and indirect motivation and support I would also thank all the past and present group members Dr Abdul, Dr...
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Fabrication of 3d metamaterials using two photon polymerization and selective silver electroless plating
... First and above all, I owe sincere and earnest thankfulness to my supervisor Dr Andrew Bettiol, for his advice, support, encouragement and crazy ideas throughout, and for the friendly and joyful ... can be seen that , and form a right-handed triplet of vectors in the case of ε > and µ > In contrast, when ε < and µ < , they are connected left-handedly, hence the term left-handed materials (LHMs) ... LCP (a) and RCP (b) The black and gray curves represent real and imaginary parts, xv respectively (c-e) The real (black) and imaginary (gray) parts of the permittivity ε, permeability μ, and the...
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Sustainable biocomposites from renewable resources and recycled polymers
... hemp, ramie and kenaf), leaf fibers (abaca, sisal and pineapple), seed fibers (coir, cotton and kapok), core fibers (kenaf, hemp and jute), grass and reed fibers (wheat, corn and rice)," and finally ... applications and the market of biopolymers, biofibers, and biocomposite materials are reported and analyzed The availability of current biofibers or natural fibers on the market are listed and compared ... reactive blending and in-situ copolymer formation To diversify the biopolymers from different resources and combine them with recyclable polymers from oil, we developed new biodegradable copolymers based...
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Báo cáo khoa học: Human anionic trypsinogen Properties of autocatalytic activation and degradation and implications in pancreatic diseases potx
... cationic trypsinogen and 33% anionic trypsinogen) or : (pathological mixture, 33% cationic trypsinogen and 67% anionic trypsinogen) Autoactivation experiments were carried out at pH 8.0 and pH 5.0 At ... Hu2) and pathological (33% Hu1–67% Hu2) mixtures of human trypsinogens at pH 8.0 in 50 lM Ca2+ (A) and pH 5.0 (B and C) Autoactivation experiments were carried out as in Fig 9A (A) and 10 (B and ... zymogen in 100 lL) were trichloroacetic acid-precipitated and analyzed by reducing SDS/PAGE (12%) and Coomassie Blue staining Bands A and B correspond to the two chains of doublechain trypsin(ogen),...
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Báo cáo khoa học: Cholesterol and its anionic derivatives inhibit 5-lipoxygenase activation in polymorphonuclear leukocytes and MonoMac6 cells pot
... two cell types, PMNL and MM6 Results Free cholesterol and its anionic derivatives inhibit cellular 5-LO product formation We determined the effect of free cholesterol, CS, CP and CA on LT production ... for an additional 10 The cells were then centrifuged and lyzed Membrane and cytosolic fractions were separated and analyzed by SDS ⁄ PAGE and western blotting technique The results are presented ... HCl and 200 ng of prostaglandin B1 (PGB1) were added This mixture was prepared and analyzed by HPLC as further described Determination of 5-LO product formation in cells PMNL (10 · 106) and MM6...
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Báo cáo khoa học: Aromatic amino-acid residues at the active and peripheral anionic sites control the binding of E2020 (AriceptÒ) to cholinesterases doc
... DDGBChE-AChE ¼ RTlnK¢I/KI, where K¢I and KI and are the dissociation constants for BChE and AChE, respectively [28] 0.29 lM and 7.1 lM for BChEs from equine [14] and rat plasma [15], respectively ... affected predominantly by replacement of the anionic subsite residue Trp86, and the peripheral anionic site residues, Asp74 and Trp286 Trp86 (Trp82 in BChE) and Ó FEBS 2003 Cholinesterase–E2020 interactions ... RTlnK¢I/KI, where K¢I and KI and are the dissociation constants for mutant and wild-type Mo AChE, respectively [28] Asp74 (Asp70 in BChE) are present in both AChE and BChE and Trp286 is replaced...
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Unique role of ionic liquid bminBF4 during curcumin–surfactant association and micellization of cationic, anionic and non ionic surfactant solutions
... effect and the attraction between the anionic SDS and the positively charged IL The cmc of TX100 in IL increases from 0.2 mM to 0.4 mM by Stokes’ shift measurement Along with an aryl and an eight ... V The excitation and emission slits width were nm The spectral data were collected using Fluorescence software and data analysis was made using OrginPro 6.0 software Results and discussion 3.1 ... with the highest affinity, followed by neutral TX100 and then anionic SDS This could be due to the electrostatic interactions between curcumin and the positive charge on the head group of CTAB present...
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Báo cáo khoa học: " A phase III trial comparing an anionic phospholipid-based cream and aloe vera-based gel in the prevention of radiation dermatitis in pediatric patients" pdf
... the analyses and drafted the manuscript CB, JS, PB and DP conducted patient exams and participated in data collection TD participated in the collection of data and data analyses CL and XX assisted ... triglycerides and phospholipids preserved with benzyl alcohol, methyl paraben, propyl paraben, and diaxolipinyl urea It was applied topically and liberally to the affected area with the bare hand Application ... satisfaction, roughness, and smoothness and examiner assessment of skin dryness, erythema, and peeling Methods This study was approved by the St Jude Institutional Review Board, and informed consent...
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Modeling and Simulation of Microbial Depolymerization Processes of Xenobiotic Polymers
... g (M ) (12.28) 297 298 12 Modeling and Simulation of Microbial Depolymerization Processes of Xenobiotic Polymers Equation (12.26) and the conditions (12.27) and (12.28) form an inverse problem ... Simulation of Microbial Depolymerization Processes of Xenobiotic Polymers 12.4.2 Analysis of Enzymatic PLA Depolymerization The experimental and analytical study of endogenous depolymerization is continued ... PLA before and after enzymatic degradation Residual amounts of PLA after incubation for and 67 h were 40% and 27%, respectively [17, 18] 301 12 Modeling and Simulation of Microbial Depolymerization...
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Oxo-biodegradable Polymers Present Status and Future Perspectives
... initiation and control, in Biodegradable Plastics and Polymers (eds K Doi and R Fukuda), Elsevier, Amsterdam, pp 79–91 28 Jakubowicz, I (2003) Polym Degrad Stab., 80, 39–43 29 Weiland, M., Daro, A., and ... Haines, J.R and Alexander, M (1974) Appl Environ Microbiol., 28, 1084–1085 Heat, D.J., Lewis, C.A., and Rowland, S.J (1997) Org Geochem., 26, 769–785 Albertsson, A.-C., Andersson, S.O., and Karlsson, ... eco-compatible products and applications References Guillet, J.E (1995) Plastics and the environment, in Degradable Polymers: Principles and Applications, (eds G Scott and D Gilead), Chapman &...
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Tài liệu Chapter 7: Dimerization, oligomerization and polymerization of alkenes and alkynes pptx
... oligomerization and polymerization of alkenes and alkynes 7.4 247 Alkyne reactions Oligomerization and polymerization of terminal alkynes may provide materials with interesting conductivity and (nonlinear) ... Areneethynylene polymers can be prepared in the palladium-catalysed copolymerization of diiodoarenes and acetylene gas in an aqueous medium Dimerization, oligomerization and polymerization of alkenes and ... with hexane, and the aqueous sulfolane phase with the rest of the products, the catalyst and the ammonium bicarbonate is Dimerization, oligomerization and polymerization of alkenes and alkynes...
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Tài liệu ORGANIC CHEMICALS AND POLYMERS pdf
... 18 4.5 Polyester PET 20 4.6 Polyamide and special polymers 22 Organic chemicals and polymers Plastics have become an indispensable material in everyday life and are used in a wide variety of technical ... Spheripol® process for the production of polypropylene homopolymers plus random and heterophasic copolymers Bulk polymerisation of polypropylene and novel polyolefins In 2005 Uhde signed a contract ... Fibres, films, bottles, medical applications Caustic soda Hydrogen Polymers Other chemical fields Polymers Polypropylene Homopolymers Copolymers Polyethylene High-density polyethylene (HDPE) Medium-density...
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Đề tài " Branched polymers and dimensional reduction " pptx
... Branched polymers and dimensional reduction By David C Brydges and John Z Imbrie* Abstract We establish an exact relation between self-avoiding branched polymers in D + continuum dimensions and the ... self-avoiding loops and vesicles [Car01] depend on a reduction of branched polymers to the zerodimensional iϕ3 theory BRANCHED POLYMERS AND DIMENSIONAL REDUCTION 1029 Our Theorems 1.1 and 1.3 provide ... configurations available to dimers and trimers is indeed π, 4π /3, respectively, in d = and 2π, 6π , respectively, in d = For larger values of N , BRANCHED POLYMERS AND DIMENSIONAL REDUCTION 1023...
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