bluuebunny/crossref_metadata_2025_split huggingface dataset:
Recommendations for the care of oral involvement in patients with systemic sclerosis
Authors: Alantar Alp , Cabane Jean , Hachulla Eric , Princ Guy , Ginisty Danielle , Hassin Michel , Sorel Marc , Maman Louis , Pilat Aurélie , Mouthon Luc 
Published: April 2011

AbstractObjectiveTo review the literature and collect expert advice for proposing preventive and curative treatments of mouth and dental involvement in patients with systemic sclerosis (SSc; scleroderma).MethodsThe literature pertaining to mouth and/or dental involvement related to SSc was reviewed, and recommendations were developed according to the suggestions of a French multidisciplinary working group of experts and validated by a lecture committee.ResultsDentists face 3 main issues in caring for SSc patients: oral mucosa involvement, manducatory apparatus and mouth involvement responsible for limitations in mouth opening, and treatment‐related adverse events. An increased risk of tongue carcinoma has been noted. In patients with severe limitation in mouth opening (<30 mm), recommended treatments are a specific mouth‐opening rehabilitation program, flexible sectional dentures, and splint therapy. Indications for dental implants depend on the severity of SSc, comorbidities, and/or ongoing bisphosphonate treatment. Prevention of mouth infections and caries implies patient education and teaching about mouth and dental hygiene, periodontal maintenance, and treatment of sicca syndrome. Cessation of tobacco use is mandatory. Patient‐tailored rehabilitation may improve limitations in mouth opening. Systematic dental panoramic radiography allows for the early detection of dental caries.ConclusionPrevention of oral and dental complications is a major issue in patients with SSc. Dental treatment should be tailored to limitations in mouth opening, disease severity, and ongoing treatments.
Original Supercritical Water Device for Continuous Production of Nanopowders
Authors: Demoisson Frédéric , Ariane Moustapha , Piolet Romain , Bernard Frédéric 
Published: April 2011

AbstractWell‐crystallized ZnO, ZrO2, TiO2, CeO2, Y2O3 and La2O3 nanoparticles are synthesized under supercritical water conditions (T > 647 K and P > 22.1 MPa) using a home‐made continuous process. At room temperature, metallic salts with or without aqueous hydroxide solution (KOH or NaOH) are pressurized to 25–30 MPa. Then, the reactant(s) is/are rapidly heated to 673–773 K by mixing with the supercritical water in a patented reactor. Residence time is in the range from 2 to 8 s. XRD, TEM and surface area analyses highlight the production of pure and well‐crystallized nanoparticles with a uniform size distribution.
Solvent Participation in a One‐Pot Glycosylation Strategy (SPOG)
Authors: Chao Chin‐Sheng , Yen Yu‐Fang , Hung Wei‐Cheng , Mong Kwok‐Kong Tony 
Published: April 2011

AbstractSolvent participation in a one‐pot glycosylation strategy (SPOG) was developed on the basis of the low concentration β‐selective glycosylation method. This strategy enables the production of a β‐glycosidic bond in a one‐pot oligosaccharide synthesis without or with minimal use of any C‐2 participating function.
Organocatalytic Stereoselective Direct Aldol Reaction of Trifluoroethyl Thioesters
Authors: Rossi Sergio , Benaglia Maurizio , Cozzi Franco , Genoni Andrea , Benincori Tiziana 
Published: April 2011

AbstractThe first organocatalytic, stereoselective and direct aldol reaction of activated thioesters with aldehydes has been accomplished. The trichlorosilyl ketene thioacetal generated in situ by adding a tertiary amine to a trifluoroethyl thioester in the presence of tetrachlorosilane is activated by catalytic amounts of an enantiomerically pure biheteroaromatic phosphine oxide to react with different aldehydes, coordinated to as well as activated by the chiral cationic hypervalent silicon species. Starting from a variety of readily available thioesters, this Lewis acid‐mediated Lewis base‐catalyzed transformation allows the direct synthesis of syn‐β‐hydroxy thioesters in up to 95% ee.
WNT10A and isolated hypodontia
Authors: Kantaputra Piranit , Sripathomsawat Warissara 
Published: April 2011

AbstractWNT10A has been associated with various syndromes with ectodermal dysplasia from severe autosomal recessive SchÖpf–Schulz–Passarge syndrome to odonto‐onycho‐dermal dysplasia and autosomal dominant hypodontia. We report WNT10A mutations in an American family of which four members are affected with isolated hypodontia or microdontia. Here we demonstrate that in addition to MSX1, PAX9, AXIN2, and EDA, mutations in WNT10A can cause isolated hypodontia. © 2011 Wiley‐Liss, Inc.
Presenting physical characteristics, medical conditions, and developmental status of long‐term survivors with trisomy 9 mosaicism
Authors: Bruns Deborah 
Published: April 2011

AbstractMuch of the available literature on individuals with trisomy 9 mosaicism focuses on reports concerning results of prenatal testing or fetal autopsy with limited reports of long‐term survivors. Data from the Tracking Rare Incidence Syndromes (TRIS) project offer the largest series to date examining the presenting physical characteristics and medical conditions at birth for 14 individuals. Results indicated the presence of low set ears and microcephaly for some children in the sample. Cardiac anomalies were reported along with feeding and respiratory difficulties in the immediate postnatal period. In addition, developmental status data indicated a wide range in functioning level with examples of demonstrated skills provided. Implications for professionals caring for patients with trisomy 9 mosaicism are offered. © 2011 Wiley‐Liss, Inc.
Somatic/gonadal mosaicism in a syndromic form of ectrodactyly, including eye abnormalities, documented through array‐based comparative genomic hybridization
Authors: Filho Aguinaldo Bonalumi , Souza Josiane , Faucz Fábio Rueda , Sotomaior Vanessa Santos , Dupont Barbara , Bartel Frank , Rodriguez Reycel , Schwartz Charles E. , Skinner Cindy , Alliman Sarah , Raskin Salmo 
Published: April 2011

AbstractSplit hand/foot malformation (SHFM) is characterized by underdeveloped or absent central digital rays, clefts of hands and feet, and variable syndactyly of the remaining digits. SHFM is a heterogeneous condition caused by abnormalities at one of multiple loci, including SHFM1 (SHFM1 at 7q21–q22), SHFM2 (Xq26), SHFM3 (FBXW4/DACTYLIN at 10q24), SHFM4 (TP63 at 3q27), and SHFM5 (DLX1 and DLX 2 at 2q31). SHFM3 is unique in that it is caused by submicroscopic tandem chromosome duplications of FBXW4/DACTYLIN. In order to show that array‐based comparative genomic hybridization should be considered an essential aspect of the genetic analysis of patients with SHFM, we report on a family with two brothers who have ectrodactyly. Interestingly, both also have ocular abnormalities. Their sister and both parents are healthy. DNA of all five family members was analyzed using oligonucleotide‐based DNA microarray and quantitative PCR. The two affected brothers were found to have a small duplication of approximately 539 kb at 10q24.32. The patients' sister and father do not have the microduplication, but qPCR showed that mother's DNA carries the duplication in 20% of blood lymphocytes. In this family, two children were affected with ectrodactyly having a duplication over the SHFM3 locus. The mother, who shows no clinical features of ectrodacytyly, is a mosaic for the same duplication. Therefore, we demonstrate that somatic/gonadal mosaicism is a mechanism that gives rise to SHFM. We also suggest that ocular abnormalities may be part of the clinical description of SHFM3. © 2011 Wiley‐Liss, Inc.
Modeling the compressive stress–strain response of polymeric foams
Authors: Spathis G. , Kontou E. 
Published: April 2011

AbstractThe mechanical behavior of cellular materials appears to have, for both open and closed cells, similar characteristics. The compressive stress–strain diagram contains a nearly elastic regime; this leads to a limit load, followed by a plateau extending to a strain of about 50% on average. All of the main features of this curve are related to the material's microstructure. In this study, taking into account the complex deformation mechanisms occurring in a cellular material under external loading, we introduced a statistical micromechanics model. The geometry of our analysis was based on a previous study, where the deformation of the individual struts was connected to the macroscopic deformation tensor. Assuming further that deformation was separated into elastic and viscoplastic parts and following a specific kinematic procedure, we simulated the compressive stress–strain response, the rate dependence, and the loading–unloading behavior of polymeric foam materials. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Novel feature of nano‐titanium dioxide on textiles: Antifelting and antibacterial wool
Authors: Montazer Majid , Pakdel Esfandiar , Behzadnia Amir 
Published: April 2011

AbstractIn this study, the antifelting and antibacterial features of wool samples treated with nanoparticles of titanium dioxide (TiO2) were evaluated. To examine the antifelting properties of the treated samples, the fabric shrinkage after washing was determined. The antimicrobial activity was assessed through the calculation of bacterial reduction against Escherichia coli (Gram‐negative) and Staphylococcus aureus (Gram‐positive) bacteria. TiO2 was stabilized on the wool fabric surface by means of carboxylic acids, including citric acid (CA) and butane tetracarboxylic acid (BTCA). Both oxidized samples with potassium permanganate and nonoxidized wool fabrics were used in this study. The relations between both the TiO2 and carboxylic acid concentrations in the impregnated bath and the antifelting and antibacterial properties are discussed. With increasing concentration in the impregnated bath, the amount of TiO2 nanoparticles on the surface of the wool increased; subsequently, lower shrinkage and higher antibacterial properties were obtained. The existence of TiO2 nanoparticles on the surface of the treated samples was proven with scanning electron microscopy images and energy‐dispersive spectrometry. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Effect of Ni2+ as a codopant on the structure, morphology, and conductivity of nanostructured polyaniline
Authors: Jiang Man , Zhu Shibu , Zhou Zuowan , Zhao An , Lu Jun 
Published: April 2011

AbstractOne‐dimensional nanostructures of polyaniline (PANI) doped with (1S)‐(+)‐10‐camphorsulfonic acid (D‐CSA) alone and with NiCl2 as a codopant were synthesized via in situ polymerization. PANI nanofibers with diameters of about 200 nm were formed when PANI was doped with D‐CSA only. When NiCl2 was added as a codopant, the morphology of PANI obviously changed. The effects and related mechanisms were investigated by Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, inductively coupled plasma–atomic emission spectroscopy, and X‐ray diffraction, and the results indicated that Ni2+ destroyed the micelles' structure by chemical conjunction with SO3H groups in camphorsulfonic acid (CSA) molecules, which were the key component in forming the CSA–aniline micelles. The combination between Ni2+ and SO in CSA with a lower addition of Ni2+ led to a reduction of CSA doping to PANI, but a higher loading of Ni2+ brought about the direct doping of Ni2+ to PANI, which caused a higher degree of doping and oxidation. The conductivity of PANI increased almost linearly with increasing Ni2+. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Physical and mechanical properties of thermostatic fabrics treated with nanoencapsulated phase change materials
Authors: Choi Kyeyoun , Cho Gilsoo 
Published: April 2011

AbstractTextiles treated with nanoencapsulated phase change materials (nanoPCMs) were used to examine their suitability as clothing materials to prepare thermostatic clothes for absorbing or releasing heat according to heat fluctuation between the body and the environment. To this end, the physical and mechanical properties of fabrics treated with nanoPCMs, such as nano‐nonadecane and nano‐octadecane, were evaluated after we confirmed the morphology and thermal efficiency of the nanoPCMs. The nanoPCMs were almost spherical, with an irregular size distribution between 200 and 400 nm. The heat of fusion and peak temperature of melting for nano‐nonadecane, nano‐octadecane, and a balanced mix were measured at 102.6 J/g and 33.6°C, 144.7 J/g and 29.8°C, and 137.4 J/g and 31.8°C, respectively. However, the heat of fusion of the vapor‐permeable and water‐repellant (VPWR) fabrics treated with the nanoPCMs were only 6.8, 4.0, and 3.6 J/g, respectively, because the weight of fabric was added per unit area. The air permeability of the specimens without nanoPCMs was the lowest; that of the VPWR fabrics with nanoPCMs was relatively higher. The water vapor transmission of the VPWR fabrics with nanoPCMs was higher than the fabric without nanoPCMs, and the water resistance decreased in the same order. Compared to the mechanical properties of the fabric without nanoPCMs, the stiffness and roughness of the fabrics with nanoPCMs were improved, but the resilience and smoothness of the fabrics were slightly decreased. Consequently, the physical and mechanical properties of VPWR fabrics with nanoPCMs were superior to those of the fabric without nanoPCMs. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Dielectric relaxation analysis of biopolymer poly(3‐hydroxybutyrate)
Authors: Hanafy Taha A. , Elbanna Khaled , El‐Sayed Somyia , Hassen Arafa 
Published: April 2011

AbstractPoly(3‐hydroxybutyrate), PHB, is a widely distributed carbon storage polymer among prokaryotes including Rhizobium. Capacities of Rhizobium etli R13 to produce the bioplastic during growth on media with different carbon sources appeared to be specific carbon‐source. In fed batch fermentation, R. etli R13 resulted in cell dry weight 6.2 g/L and PHB 51.4%. Gas chromatography‐mass spectrometry and gel permeation chromatography analysis revealed that PHB produced from R. etli R13 was solely composed of 3‐hydroxybutyric acid and the molecular mass of the purified PHB was 3.4 × 105 Da with polydispersity 1.47. Dielectric relaxation of PHB has been studied in the temperature and frequency ranges 300–440 K and 10 kHz–4 MHz, respectively. A clear dielectric α and ρ‐relaxation processes are observed in these studied ranges of temperature and frequency. The first process is due to the dipole relaxation in the crystalline phase of PHB. The second one is due to the space‐charge formation or Maxwell‐Wagner‐polarization. The α‐relaxation process has been investigated by semiempirical Havriliak‐Negami relaxation function. The activation energy (Ea) and the relaxation time (τ0) are calculated using the Arrhenius equation. The dielectric relaxation strength (Δε) is strongly temperature dependent. The calculated values of Ea for ac conductivity, ln(σ), of PHB provide information about the presence of electronic conduction. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Preparation and characteristic of lactose‐oleoylchitosan and the application of its self‐aggregates as drug delivery system
Authors: Zhang Shanshan , Li Yanyan , Ren Guodong , Chen Xiguang , Meng Xiangjun 
Published: April 2011

AbstractAmphiphilic polymers lactose‐oleoylchitosan (Lac‐OCH) with different degree of substitution (DS) of lactose were prepared. The chemical structure of the new chitosan derivative was tested and verified. The rheological features including solubility and viscosity of Lac‐OCH were investigated. The introduction of hydrophilic group lactose could improve the solubility of the polymer and Lac‐OCH was soluble in acetic acid solution under pH 7.0. The viscosity of Lac‐OCH decreased a little along with the increasing of DS of lactose. Lac‐OCH with high DS, middle DS, and low DS of lactose possessed small critical aggregation concentration value, and the critical aggregation concentration value rised along with the increasing of DS of lactose. However, the affect was not obvious. In brief, the CAC values were 0.0325, 0.0340, and 0.0344 mg/mL corresponding to the samples of low DS, middle DS, and high DS. Lac‐OCH, obtained by hydrophilic modified using lactose, could also form self‐assembled nanoparticles by oil/water (O/W) emulsification method comparing with OCH. The Lac‐OCH nanoparticles showed dense, axiolitic texture, and the average diameter was approximate 200 nm. The sustained‐release characteristics of Lac‐OCH nanoparticles were studied using Doxorubicin as model drug. The results revealed the promising potential of amphiphilic Lac‐OCH as drug carrier. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Preparation and characterization of polyurea/polyurethane double‐shell microcapsules containing butyl stearate through interfacial polymerization
Authors: Lu Shaofeng , Xing Jianwei , Zhang Zhaohuan , Jia Gaopeng 
Published: April 2011

AbstractDouble‐shell microcapsules containing butyl stearate were prepared through interfacial polymerization. The outer shell is polyurea formed through polymerization of toluene‐2,4‐diisocyanate (TDI) and diethylene triamine, and the inner shell is polyurethane (PU) formed through polymerization of TDI and polypropylene glycol 2000 (PPG2000). Styrene maleic anhydride copolymer was used as emulsifier. The effects of core to monomer ratio and dosage of PPG2000 on core content and encapsulation efficiency of microcapsules were investigated. The core content has a maximum at core to monomer ratio of 3–4, and the encapsulation efficiency has a maximum value of 95% at core to monomer ratio of 2. The prepared microcapsules were smooth and compact and have an obvious latent heat of 85 J/g. The shell structure of microcapsules was polyurea and PU. The average diameter of the microcapsules was 1–5 μm. The stabilities of the double‐shell microcapsule, such as anti‐ethanol wash and antiheat properties are obviously improved than those of single‐shell microcapsule. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Effect of MWCNTs irradiation grafting treatment on the surface properties of PBO fiber
Authors: Zhang Chunhua , Yuan Wenjing , Wang Shengrui , Liang Xifeng 
Published: April 2011

AbstractThe aim of this article is improved the surface properties of Poly[p‐phenylenebenzobisoxazole] (PBO) fiber with epichlorohydrin hybridized carboxylic multi walled carbon nanotubes (MWCNTs‐Ecp) grafting by using γ‐ray irradiation technology. The surface chemical properties, the surface morphology, the amount of the grafted MWCNTs on PBO fiber and the surface free energy of PBO fibers have been analyzed. The results show that MWCNTs‐Ecp have been grafted on the surface of PBO fiber by γ‐ray irradiation treatment. The surface chemical inertness and the surface smoothness of PBO fiber are significantly improved by grafting MWCNTs‐Ecp chains, the amount of the grafted MWCNTs on PBO fiber is about 11.9%, and the surface free energy of PBO fiber has an increase of 42.6% by generating some active groups such as COOH, OH, and CCl on the surface of PBO fiber. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Synthesis and characterization of mesoporous carbon with narrow pore size distribution derived from rare earth–macromolecule complexes
Authors: Li Yanqiu , Li Kaixi 
Published: April 2011

AbstractMesoporous carbon with narrow pore size distribution was novelly derived from rare earth–macromolecule complexes, which were formed by the coordination between grafted novolac‐type phenolic resin and rare earth ions (Ce3+). The as‐made resins or carbons were characterized by infrared spectrum, thermogravimetry, carbon tetrachloride adsorption, nitrogen adsorption, and scanning electron microscope. The results showed that the rare earth–macromolecule complexes were formed successfully, which could promote the dispersion of rare earth elements in the precursor and further control the pore structure and pore size distribution of as‐made mesoporous carbon during steam‐activation process. The as‐made mesoporous carbon exhibited typical mesoporous structure and relatively narrow pore size distribution, and the mesoporosity of it was up to 88%. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Polyurethane membranes with tunable surface properties for biomedical applications
Authors: Ignacio Carlos , Gomes Igor A. S. , Oréfice Rodrigo L. 
Published: April 2011

AbstractThe use of surfaces with tunable properties triggered by external stimuli is effective in controlling the interactions between biomaterials and biological entities, such as proteins and cells. The goal of this work is to prove that the presence of poly‐n‐isopropylacrylamide (P‐N‐IPAAm) chains grafted onto polyurethane (PU) membranes and used for medical wound dressings can allow the behavior of the surfaces to be shifted from hydrophobic to hydrophilic by reducing the temperature to values lower than the low critical solution temperature (LCST) of the polymer, which is close to 32°C. The manipulation of this behavior can then be used to control cell and protein adhesion on the surface. Grafting of P‐N‐IPAAm was accomplished by treating the surface of polyurethane membranes with ultraviolet (UV) radiation, followed by polymerizing the isopropylacrylamide from the modified surfaces. The wettability of the surfaces was studied using contact angle measurements as a function of temperature. Infrared spectroscopy was also used to characterize these modified surfaces. The ability of the grafted surfaces to allow adsorption of proteins was evaluated as a function of temperature. The results showed that the amount of proteins adsorbed on the polyurethane membranes could be radically changed by altering the temperature above or below 32°C. In vivo biocompatibility tests were performed on P‐N‐IPPAm samples, and no indication of toxicity was noted after 7 days of implantation. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Synthesis and properties of polyurethane‐urea‐based liquid bandage materials
Authors: Choi Soo‐Jeong , Lee Jung‐Hee , Lee Young‐Hee , Hwang Dae‐Youn , Kim Han‐Do 
Published: April 2011

AbstractTo obtain ideal liquid bandage polymer materials, a series of polyurethane‐urea dispersions were synthesized from 4,4′‐diisocyanato dicyclohexylmethane (H12MDI) and ethylene diamine with different molar ratio of polyol blend [polyethylene glycol (PEG, Mn = 2000 g/mol)/hydroxy terminated poly(dimethylsiloxane) (PDMS, Mn = ∼ 550 g/mol)] and acetone/ethanol as a solvent. The effect of PDMS content in PEG/PDMS on the viscosity, mechanical properties, water contact angle/surface energy, insolubility in water (%), water absorption (%), equilibrium water content (%), and water vapor transmission rate (g m−2 day−1) of polyurethane‐urea films was investigated. As PDMS content increased, the water contact angle, insolubility in water, and tensile strength/elastic recovery of film sample increased; however, the surface energy, water absorption (%), equilibrium water content (%), and water vapor transmission rate (g m−2 day−1) of film sample decreased. By a wound‐healing evaluation using a full‐thickness rat model experiment, it was found that a wound covered with a typical polyurethane‐urea liquid bandage film (PD2 sample) was filled with new epithelium without any significant adverse reactions. These results suggest that the polyurethane‐urea‐based liquid bandages (samples: PD2 and PD3) prepared in this study may have high potential as new wound dressing materials, which provide and maintain the adequate wet environment required to prevent scab formation and dehydration of the wound bed. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011