Shuhei Otsuki, Kosuke Nakagawa, Tomohiko Murakami, Shunsuke Sezaki, Hideki Sato, Masakazu Suzuki, Nobuhiro Okuno, Hitoshi Wakama, Kunihiro Kaihatsu, Masashi Neo,
Meniscal injury is a severe impediment to movement and results in accelerated deterioration of the knee joint.To evaluate the effect of a novel meniscal scaffold prepared from polyglycolic acid coated with polylactic acid/caprolactone on the treatment of meniscal injury in a mini pig model.Controlled laboratory study.The model was established with a 10-mm resection at the anterior medial meniscus on both knee joints. A scaffold was implanted in the right knee joint. The meniscal scaffold was inserted ...
Tópico(s): Polymer Surface Interaction Studies
2019 - SAGE Publishing | The American Journal of Sports Medicine
Richard M. Laine, Rita Baranwal, T. Hinklin, David R. Treadwell, Anthony C. Sutorik, Clint R. Bickmore, Kurt F. Waldner, Siew Siang Neo,
Tópico(s): Catalysis and Oxidation Reactions
1998 - Trans Tech Publications | Key engineering materials
How‐Ghee Ang, Kim-Seng Chan, Gaik‐Khuan Chuah, Stephan Jaenicke, Sock-Kim Neo,
Temperature-programmed decomposition has been used to determine the energetics of metalcarbonyl bond dissociation in the surface-mediated decarbonylation of Mo(CO)6 adsorbed on alumina, magnesia, silica, titania, zirconia and zinc oxide. To estimate the influence of the surface microstructure, the reaction was studied on a conventional silica gel and on MCM-41, a silica with uniform cylindrical mesopores. Activation energies for successive decarbonylation steps were calculated from the temperature ...
Tópico(s): Mesoporous Materials and Catalysis
1995 - Royal Society of Chemistry | Journal of the Chemical Society. Dalton transactions
Produção Nacional
Revisado por pares
Núbia Azevedo, José Carlos Marques,
... Torcida no Matchday do estádio do clube, a Neo Química Arena, e questionar o quão acessível seria o ...
Tópico(s): Business and Management Studies
2022 - UNIVERSIDADE FEDERAL DE MINAS GERAIS | FuLiA / UFMG
Produção Nacional
Revisado por pares
Fillipe Soares Romano, Roberto Paolo Vico, Ricardo Ricci Uvinha,
... sport mega-events in São Paulo, namely, the Neo Química Arena. Noteworthy findings demonstrate a discrepancy between the ...
Tópico(s): Physical Education and Sports Studies
2023 - SAGE Publishing | Local Economy The Journal of the Local Economy Policy Unit
Chin Yong Neo, Jianyong Ouyang,
Tópico(s): Advanced Photocatalysis Techniques
2012 - Elsevier BV | Electrochimica Acta
S. H. Goh, S.Y. Lee, Kok Siong Siow, M. K. Neo,
The miscibility behaviour of poly(chloromethyl methacrylate) (PCMMA) with various polymethacrylates was examined by differential scanning calorimetry and for lower critical solution temperature behaviour. PCMMA is miscible with poly(methyl methacrylate) (PMMA), poly(ethyl methacrylate) (PEMA), poly(n-propyl methacrylate) (PnPMA), poly(isopropyl methacrylate) (PiPMA) and poly(tetrahydrofurfuryl methacrylate) (PTHFMA), but is immiscible with poly(n-butyl methacrylate) (PnBMA). Blends of PCMMA with PMMA and ...
Tópico(s): Polymer Science and PVC
1990 - Elsevier BV | Polymer
Shuhei Otsuki, Kuniaki Ikeda, Kei Tanaka, Yoshinori Okamoto, Shunsuke Sezaki, Masashi Neo,
Partial meniscectomy, which is generally used for the treatment of meniscal tears, can lead to knee joint osteoarthritis. To prevent this important complication, attempting to restore normal knee joint kinematics and biomechanical forces after partial meniscectomy is essential. Implantation of a meniscal scaffold can be useful in this regard, improving the function of the meniscus on knee joint biomechanics after partial meniscectomy. Use of meniscal scaffolds would have specific clinical merit ...
Tópico(s): Polymer Surface Interaction Studies
2022 - Elsevier BV | Arthroscopy Techniques
Tao He, Fabio di Lena, Kang Chi Neo, Christina L. L. Chai,
Well-defined pH-responsive polymer nanoparticles were prepared in water directly after a simple dialysis procedure without the process of self-assembly from branched copolymers. The branched AB diblock copolymers of poly(ethyleneglycol methacrylate/dimethylamino ethyl methacrylate) (P(PEGMA/DMA)) and poly(ethyleneglycol methacrylate)/diethylamino ethyl methacrylate) (P(PEGMA/DEA)) have been synthesized using a one-pot atom-transfer radical polymerization (ATRP) approach in presence of a bifunctional ...
Tópico(s): Block Copolymer Self-Assembly
2011 - Royal Society of Chemistry | Soft Matter
Tong Neo Choo, Robert M. Waymouth,
The copolymerization of ethylene with 1,5-hexadiene or 1-hexene was studied with the series of ansa-metallocenes Me2Si(Cp)(9-Flu)ZrCl2 (1), Me2Si(1-Ind)(9-Flu)ZrCl2 (3), and Me2Si(9-Flu)2ZrCl2 (4). 1,5-Hexadiene, a monomer which requires two insertion events to be cyclopolymerized, when copolymerized with ethylene using 3/MAO, gave a copolymer with a novel architecture. When compared with the copolymerization of 1-hexene with ethylene, the observed striking differences between the two copolymers provided ...
Tópico(s): Carbon dioxide utilization in catalysis
2002 - American Chemical Society | Journal of the American Chemical Society
Liuqun Gu, Boon Siong Neo, Yugen Zhang,
Gold(III) chloride catalyzed direct amination of arenes with azodicarboxylates was developed. The new catalytic system was active to a broad range of substrates, and the reaction was carried out under mild conditions. It represents the first catalytic system for the direct amination of electron-deficient arenes with azodicarboxylates to the best of our knowledge. This reaction provides an important approach for the synthesis of heterocyclic compounds in pharmaceutical and chemical industries.
Tópico(s): Asymmetric Hydrogenation and Catalysis
2011 - American Chemical Society | Organic Letters
S. Basurto, Daniel Miguel, Daniel Moreno, Ana G. Neo, Roberto Quesada, Tomás Torroba,
Push-pull chromophores based on 1-dicyanomethylene-2-chloro-3-aminoindene are readily synthesized. These compounds undergo dramatic colour changes in the presence of metal cations as a result of the interaction of the amino substituent with the analytes. One of these compounds is a selective copper(ii) colorimetric probe in acetonitrile solution, displaying a dramatic colour change upon coordination of the amine group to the metal centre. These compounds are also selective cyanide sensors in acetonitrile ...
Tópico(s): Analytical Chemistry and Sensors
2009 - Royal Society of Chemistry | Organic & Biomolecular Chemistry
Raj K. Chadha, John E. Drake, M. K. Neo,
Tópico(s): Vanadium and Halogenation Chemistry
1984 - Elsevier BV | Journal of Organometallic Chemistry
Dan Daniel, Chee Leng Lay, Anqi Sng, Coryl Jing Jun Lee, Darren C. J. Neo, Xing Yi Ling, Nikodem Tomczak,
There is a huge interest in developing superrepellent surfaces for antifouling and heat-transfer applications. To characterize the wetting properties of such surfaces, the most common approach is to place a millimetric-sized droplet and measure its contact angles. The adhesion and friction forces can then be inferred indirectly using Furmidge’s relation. While easy to implement, contact angle measurements are semiquantitative and cannot resolve wetting variations on a surface. Here, we attach a ...
Tópico(s): Fluid Dynamics and Thin Films
2019 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Ming Hui Chua, Tao Tang, Kok‐Haw Ong, Wei Teng Neo, Jian Wei Xu,
Electrochromic (EC) materials exhibit colour changes between coloured and colourless states, or between two or more coloured states in response to an external electrical bias. The reversible colour changes of the EC materials are attributed to changes in their absorption behaviors in the UV–visible–near-infrared (NIR) region as a consequence of electrochemical oxidation and reduction. The clear understanding of the underlying fundamental principles of EC materials and their devices allows the colour- ...
Tópico(s): Conducting polymers and applications
2019 - Royal Society of Chemistry | RSC smart materials
Clarissa Z. Y. Koh, Kum C. Hiong, Celine Y. L. Choo, Mel V. Boo, Wai Peng Wong, Shit F. Chew, Mei Lin Neo, Yuen K. Ip,
A Dual-Domain Carbonic Anhydrase (DDCA) had been sequenced and characterized from the ctenidia (gills) of the giant clam, Tridacna squamosa, which lives in symbiosis with zooxanthellae. DDCA was expressed predominantly in the ctenidium. The complete cDNA coding sequence of DDCA from T. squamosa comprised 1,803 bp, encoding a protein of 601 amino acids and 66.7 kDa. The deduced DDCA sequence contained two distinct α-CA domains, each with a specific catalytic site. It had a high sequence similarity ...
Tópico(s): Chemical synthesis and alkaloids
2018 - Frontiers Media | Frontiers in Physiology
Dileep Kumar, Kian‐Eang Neo, Malik Abdul Rub,
Abstract The present work concerns with the effect of alkanediyl-α,ω-bis(dimethylcetylammonium bromide) gemini surfactants on the reaction rate of ninhydrin with glycyl-glycine. The spectra showed peaks at 400 nm and 570 nm in aqueous and aqueous–micellar media indicating the formation of the same product. Under pseudo-first-order conditions of excess ninhydrin, the reaction followed an irreversible first- and fractional-order kinetics with respect to [Gly-Gly] and [ninhydrin]. Also, the rate constants ( ...
Tópico(s): Photochemistry and Electron Transfer Studies
2016 - De Gruyter | Tenside Surfactants Detergents
Dileep Kumar, Kian‐Eang Neo, Malik Abdul Rub,
Abstract The effect of gemini (16‐ s ‐16, s = 4, 5, 6) surfactants on the reaction rate of ninhydrin with [Cu(II)‐Gly‐Tyr] + complex was determined using a spectrophotometric technique. The ninhydrin concentration was kept in excess in order to maintain pseudo‐first‐order conditions. The reaction followed irreversible first‐ and fractional‐order kinetics with respect to [Cu(II)‐Gly‐Tyr] + and [ninhydrin], respectively. It is found that gemini surfactants effectively catalyze the reaction. The rate constants ( ...
Tópico(s): Photochemistry and Electron Transfer Studies
2015 - Wiley | Journal of Surfactants and Detergents
Dileep Kumar, Kian‐Eang Neo, Malik Abdul Rub,
In the present study, we have reported the interaction between copper(II) complex of glycylphenylalanine, [Cu(II)-Gly-Phe]+, and ninhydrin in aqueous–micellar solutions of gemini surfactants (16-s-16, s = 4, 5, 6). The reaction showed first- and fractional-order dependencies, respectively, on [complex] and [ninhydrin]. The surfactants used in this reaction are a dicationic gemini and its catalytic behavior was also seen on the reaction rate. It is found that dicationic gemini surfactants are more effective ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2015 - Elsevier BV | Journal of Molecular Liquids
Stefano Marcaccini, Ana G. Neo, Carlos F. Marcos,
Herein we report a novel, diastereoselective, one-pot, two-step, sequential synthesis of highly functionalized natural product-like spiropyrrolidinochromanones. The process consists of an Ugi four-component condensation of 3-formylchromones with amines, isocyanides, and glyoxylic acids followed by a nucleophilic conjugate addition and intramolecular cyclization. The experimental simplicity and tolerance to a wide variety of substituents makes this method suitable for combinatorial synthesis.
Tópico(s): Oxidative Organic Chemistry Reactions
2009 - American Chemical Society | The Journal of Organic Chemistry
Han Vinh Huynh, Tiong Cheng Neo, Geok Kheng Tan,
Mixed dicarboxylato−bis(carbene) complexes of palladium(II) have been prepared by reacting cis-diiodo-bis(N,N'-dimethylbenzimidazolin-2-ylidene)palladium(II) (cis-A) with AgO2CR, where R = CH3, CF3, and CF2CF3. In this manner, cis-diacetato-bis(N,N'-dimethylbenzimidazolin-2-ylidene)palladium(II) (1), cis-di(trifluoroacetato)-bis(N,N'-dimethylbenzimidazolin-2-ylidene)palladium(II) (2), and cis-di(pentafluoropropionato)-bis(N,N'-dimethylbenzimidazolin-2-ylidene)palladium(II) (3) were obtained. Complexes ...
Tópico(s): Catalytic C–H Functionalization Methods
2006 - American Chemical Society | Organometallics
Han Vinh Huynh, Joanne Hui Hui Ho, Tiong Cheng Neo, Lip Lin Koh,
Reaction of N,N′-dimethylbenzimidazolyl iodide (A) with Pd(OAc)2 in DMSO gives selectively trans-bis(N,N′-dimethylbenzimidazoline-2-ylidene) palladium(II) diiodide (trans-2) in 77% yield. The selective formation of the trans-coordination isomer and thus the cis–trans rearrangement is driven by the insolubility of trans-2 in DMSO. X-ray single-crystal diffraction analysis and 13C NMR spectroscopy confirm the trans-geometry of the square planar Pd(II) complex. Catalytic studies show that cis-1 and trans- ...
Tópico(s): Synthetic Organic Chemistry Methods
2005 - Elsevier BV | Journal of Organometallic Chemistry
Yuki Honda, Masakazu Nanba, Kazunori Miyakawa, Misao Kubota, Masayoshi Nagao, Yoichiro Neo, Hidenori Mimura, Norifumi Egami,
We have developed a highly sensitive, compact image sensor that comprises a field emitter array (FEA) and a high-gain avalanche-rushing amorphous photoconductor target, with the ultimate aim of developing an ultrahighly sensitive, compact, high-definition television camera. Double-gated FEs have an advantage of having a compact electron beam focusing system; however, image intensities reproduced by the sensor were nonuniform due to low electron beam current. Furthermore, the simulated electron beam ...
Tópico(s): Semiconductor materials and devices
2016 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Electron Devices
Ana G. Neo, A. Serrano, Carmen López, Luís Castedo, Gabriel Tojo,
... Analogue of the Antitumor Agent CC-1065Ana G. Neo†, Antonio Pérez, Carmen López, Luis Castedo, and Gabriel Tojo*View Author Information Departamento de Química Orgánica y Unidad Asociada al CSIC, Universidad de ...
Tópico(s): Microbial Natural Products and Biosynthesis
2009 - American Chemical Society | The Journal of Organic Chemistry
Rajinikanth Ps, Neo Woei Keat, Sanjay Garg,
The main objective this study is to prepare and evaluate the selfnanoemulsifying drug delivery (SNEDDS) system in order to achieve a better dissolution rate of a poorly water soluble drug valsartan. The present research work describes a SNEDDS of valsartan using labrasol, Tween 20 and Polyethylene glycol (PEG) 400. The pseudo-ternary phase diagrams with presence and absence of drug were plotted to check for the emulsification range and also to evaluate the effect of valsartan on the emulsification ...
Tópico(s): Analytical Chemistry and Chromatography
2012 - | International Journal of Drug Delivery
Philip Karlsson, Neo B. Esbjörnsson, Krister Holmberg,
Micrometer-sized aluminum particles used as pigments in silver inks and coatings are reactive in water-based formulations. This leads to hydrogen gas evolution in the paint containers and loss of the silvery appearance of the coating. The protection of aluminum pigments from water is called inhibition and it was shown in earlier work that anionic surfactants of the phosphate ester type are effective as inhibitors, forming a protective bilayer on the aluminum pigment surface. In this work, the protection ...
Tópico(s): Photopolymerization techniques and applications
2009 - Elsevier BV | Journal of Colloid and Interface Science
G. L. Bansal, Weibiao Zhou, Philip J. Barlow, Hui-Ling Lo, Fung-Leng Neo,
The stability of refined, bleached and deodorised (RBD) palm olein was studied under both repeated frying and controlled heating conditions. Two different frying foods i.e. chicken nuggets and French fries were used to evaluate the oil performance under various frying conditions. Thermo-oxidative alterations were measured through various physical and chemical parameters. Total polar compounds (TPC), polymeric triglycerides (PTG), blueness (b∗ value), chroma (C∗ value), refractive index and viscosity ...
Tópico(s): Coconut Research and Applications
2009 - Elsevier BV | Food Chemistry
Wee Koon Neo, Mary B. Chan‐Park,
Abstract Summary: A novel experimental set‐up has been devised to measure simultaneously, in real time, the conversion and shrinkage of multi‐acrylates during photopolymerization. The data show that the current practice of assigning the excess volume entirely as excess free volume is inappropriate as this leads to an increasing fractional free volume with conversion. We propose to partition the excess volume into free and occupied volume components. The new model produces satisfactory results. Experimental ...
Tópico(s): Advanced Polymer Synthesis and Characterization
2005 - Wiley | Macromolecular Rapid Communications
Tong Neo Choo, Robert M. Waymouth,
The copolymerization of ethylene with 1,3-butadiene was studied with the series of ansa-metallocenes Me2Si(Cp)(9-Flu)ZrCl2 (1), Me2Si(1-Ind)(9-Flu)ZrCl2 (2), and Me2Si(9-Flu)2ZrCl2 (3) with methylaluminoxane (MAO) as cocatalyst. The catalyst 2/MAO yields a cyclocopolymer composed of two ethylene monomer units for every one butadiene in a novel periodic architecture of 1,2-enchained cyclopentane units separated by three methylenes. The high butadiene content in the copolymer and the high selectivity ...
Tópico(s): Catalytic Alkyne Reactions
2003 - American Chemical Society | Journal of the American Chemical Society
Enols are used for the first time in a condensation with aldehydes and isocyanides to selectively give three- or pseudo-four-component adducts, depending on the reaction conditions. These new transformations have proven to be a convenient alternative for the synthesis of biologically relevant pyrrolidinones containing peptidic or pseudo-peptidic groups on carbon 3. More importantly, this work attests to the utility of heterocyclic enols containing conjugated electron-withdrawing groups as useful ...
Tópico(s): Synthesis and biological activity
2018 - American Chemical Society | Organic Letters