bluuebunny/crossref_metadata_2025_split huggingface dataset:
Deinococcus–ThermusGroup
Authors: Battista John R 
Published: July 2016

AbstractTheDeinococcus–Thermusgroup represents an ancient lineage that contains some of the most conspicuous species within the domainBacteria. The group is distinguished by species that resist the lethal effects of exposure to ionising radiation and ultraviolet light, and by species that thrive at high temperature.Deinococcus–Thermusis comprised of two orders, theDeinococcalesand theThermales. The mostly mesophilic species ofDeinococcalesdemonstrate uncommon resistance following exposure to electromagnetic radiations, tolerating doses that normally destroy vegetative bacteria. TheThermalesare thermophilic with optimal growth at temperatures between 60 and 80 °C, but show no evidence of resistance to electromagnetic radiation. Despite these striking and distinctive phenotypic differences, 16S ribosomal ribonucleic acid sequences verify that members of these orders are specifically related to each other.Key ConceptsSpecies within theDeinococcus–Thermusgroup exist over a wide geographic distribution within the natural and built environments.All species within theDeinococcus–Thermusgroup are specifically related to each other through their 16S rRNA sequences.Members of theDeinococcalesandThermalesshare only three phenotypic characteristics: all are nonmotile, none form endospores and all utilise menaquinone 8 as their major respiratory lipoquinone.Members of theDeinococcalesare aerobic, chemoorganotrophic and display respiratory metabolism. Other chemotaxonomic characteristics of this order are more varied than might be expected for closely related species.Most members of theDeinococcalesdisplay extreme resistance to the lethal effects of ionising radiation and UV light; there is a subset of species that are substantially less resistant to these agents.Members of theThermalesare thermophilic or slightly thermophilic rods. Optimal growth temperature for the type strains within the order falls between 60 and 70 °C, but there is considerable variation in growth temperature among nontype species.Most members of theThermalesare aerobic chemoorganotrophs reported to grow between pH 5.0 and 10.5 with optimal growth between pH 6 and 7. In the presence of an appropriate electron acceptor, some species will grow anaerobically.Members of theThermalesare routinely isolated from hydrothermal features worldwide at freshwater and marine sites, including deep sea hydrothermal vents.
System identification of a class of Wiener systems with hysteretic nonlinearities
Authors: Radouane Abdelhadi , Giri Fouad , Ikhouane Faycal , Ahmed‐Ali Tarek , Chaoui Fatima‐Zahra , Brouri Adil 
Published: July 2016

SummaryExisting works on Wiener system identification have essentially been focused on the case where the output nonlinearity is memoryless. When memory nonlinearities have been considered, the focus has been restricted to backlash like nonlinearities. In this paper, we are considering Wiener systems where the output nonlinearity is a general hysteresis operator captured by the well‐known Bouc–Wen model. The Wiener system identification problem is addressed by making use of a steady‐state property, obtained in periodic regime, referred to as ‘hysteretic loop assumption’. The complexity of this problem comes from the system nonlinearity as well as its unknown parameters that enter in a non‐affine way in the model. It is shown that the linear part of the system is accurately identified using a frequency method. Then, the nonlinear hysteretic subsystem is identified, on the basis of a parameterized representation, using a prediction‐error approach. Copyright © 2016 John Wiley & Sons, Ltd.
Active and Recyclable Polyethylene‐Supported Iridium‐(N‐ Heterocyclic Carbene) Catalyst for Hydrogen/Deuterium Exchange Reactions
Authors: Romanenko Iuliia , Norsic Sébastien , Veyre Laurent , Sayah Reine , D'Agosto Franck , Raynaud Jean , Boisson Christophe , Lacôte Emmanuel , Thieuleux Chloé 
Published: July 2016

AbstractThe multistep synthesis of a polyethylene‐supported iridium(III)‐(N‐heterocyclic carbene) hydrogen/deuterium exchange catalyst was performed starting from an iodo‐polyethylene obtained via catalyzed polyethylene chain growth (CCG) on magnesium. Unique thermomorphic polyethylene properties give the possibility to perform catalytic hydrogen/deuterium exchange reactions at 100 °C in the homogeneous phase with simple catalyst separation as a precipitate at room temperature. The catalytic activity of the polymer‐supported catalyst was compared with that of its monomeric analogue. The catalytic studies showed that the supported catalyst exhibits similar profiles and turnover numbers as homogeneous counterparts without deactivation.magnified image
Influence of Nano‐Sized Calcium Carbonate on Adhesion of HDPE/ Cross‐Linked High Density Polyethylene Multilayer Structures
Authors: Dastjerdi Javad , Garmabi Hamid 
Published: July 2016

AbstractNovel composites of silane cross‐linked high‐density polyethylene (PEX) reinforced by nanosized calcium carbonate (NCC) were welded to high‐density polyethylene (HDPE) using lamination method. The effects of NCC content on interfacial interactions of the bilayer structures were studied through morphological, mechanical, and thermal observations. Scanning electron microscopy (SEM) micrographs indicated that transcrystalline layer could be generated by adding NCC up to 5 wt%, which improves crystallinity in the interfacial region; however, incorporation of 10 wt% NCCs restricted lamellar alignments and did not change interfacial crystallinity. Impact resistance synergy was also observed in multilayer structures containing transcrystalline layer. The results showed improvement of peel energy of neat PEX up to 50% by addition of 5 wt% NCCs which is attributed to transcrystallization and chain attraction on the nanofiller's surface. The adhesion of layers promoted generally by annealing because of increasing possibility of interfacial interactions via chain mobility.
Dual energy X‐ray absorptiometry spine scans to determine abdominal fat in postmenopausal women
Authors: Bea J.W. , Blew R.M. , Going S.B. , Hsu C.‐H. , Lee M.C. , Lee V.R. , Caan B.J. , Kwan M.L. , Lohman T.G. 
Published: July 2016

AbstractBody composition may be a better predictor of chronic disease risk than body mass index (BMI) in older populations.ObjectivesWe sought to validate spine fat fraction (%) from dual energy X‐ray absorptiometry (DXA) spine scans as a proxy for total abdominal fat.MethodsTotal body DXA scan abdominal fat regions of interest (ROI) that have been previously validated by magnetic resonance imaging were assessed among healthy, postmenopausal women who also had antero‐posterior spine scans (n = 103). ROIs were (1) lumbar vertebrae L2‐L4 and (2) L2‐Iliac Crest (L2‐IC), manually selected by two independent raters, and (3) trunk, auto‐selected by DXA software. Intra‐class correlation coefficients evaluated intra and inter‐rater reliability on a random subset (N = 25). Linear regression models, validated by bootstrapping, assessed the relationship between spine fat fraction (%) and total abdominal fat (%) ROIs.ResultsMean age, BMI, and total body fat were 66.1 ± 4.8 y, 25.8 ± 3.8 kg/m2 and 40.0 ± 6.6%, respectively. There were no significant differences within or between raters. Linear regression models adjusted for several participant and scan characteristics were equivalent to using only BMI and spine fat fraction. The model predicted L2‐L4 (Adj. R2: 0.83) and L2‐IC (Adj. R2: 0.84) abdominal fat (%) well; the adjusted R2 for trunk fat (%) was 0.78. Model validation demonstrated minimal over‐fitting (Adj. R2: 0.82, 0.83, and 0.77 for L2‐L4, L2‐IC, and trunk fat, respectively).ConclusionsThe strong correlation between spine fat fraction and DXA abdominal fat measures make it suitable for further development in postmenopausal chronic disease risk prediction models. Am. J. Hum. Biol. 28:918–926, 2016. © 2016Wiley Periodicals, Inc.
Assessment of cardiovascular risk factors in a Roma community from Southwestern France
Authors: Papon Catherine , Delarche Nicolas , Le Borgne Christophe , Bauduer Frédéric 
Published: July 2016

AbstractObjectivesRoma from Central‐Eastern Europe experience a reduced life expectancy in comparison with the general population. Predisposing cardiovascular risk factors could be the underlying reason for this. Here for the first time epidemiologic data on the distribution of cardiovascular risk factors in a subgroup of French Roma has been presented.MethodsA descriptive epidemiological field survey was conducted in the Manouche community of Pau, Southwestern France. Fifty participants were included (17 men and 33 women) all living in caravans. A questionnaire to ask for demographic and health information was used, and biometric measurements were took in order to assess cardiovascular risk factors.ResultsOur sample included 18% diabetics, 32% people suffering from hypertension, 28% subjects with hypercholesterolemia, and 34% smokers. The prevalence of overweight and obesity was, respectively, 40% and 38% and that of abdominal obesity 64%. These frequencies were about twice those found in the general French population.ConclusionAlthough our sample was of limited size, our data suggest that French Manouches express a high‐risk profile regarding cardiovascular disease, as has been reported for Roma from various countries. Both intrinsic and environmental factors may explain this.
Sulfoxid‐gelenkte C‐H‐Kupplungsreaktionen: Eine alte funktionelle Gruppe lernt neue Tricks
Authors: Pulis Alexander P. , Procter David J. 
Published: July 2016

AbstractSulfoxide sind klassische funktionelle Gruppen zur Lenkung der stöchiometrischen Metallierung und Funktionalisierung von C‐H‐Bindungen. Neuerdings machen Sulfoxide durch die Entwicklung moderne Synthesemethoden, die auf ihrer einzigartigen Reaktivität beruhen, wieder auf sich aufmerksam, so etwa kürzlich bei der katalytischen C‐H‐Aktivierung durch Koordination eines internen Sulfoxids an ein Metall oder die Wirkung eines externen Sulfoxidliganden. Außerdem können Sulfoxide Nukleophile und Elektrophile einfangen und Sulfoniumsalze ergeben, die anschließend die Bildung von C‐C‐Bindungen auf Kosten von C‐H‐Bindungen ermöglichen. Dieser Aufsatz fasst eine Renaissance der Sulfoxide zusammen, die auf der Anwendung dieser vielseitigen Gruppe bei der Lenkung von C‐H‐Funktionalisierungen zurückzuführen ist.
On‐Demand Dissolution of a Dendritic Hydrogel‐based Dressing for Second‐Degree Burn Wounds through Thiol–Thioester Exchange Reaction
Authors: Konieczynska Marlena D. , Villa‐Camacho Juan C. , Ghobril Cynthia , Perez‐Viloria Miguel , Tevis Kristie M. , Blessing William A. , Nazarian Ara , Rodriguez Edward K. , Grinstaff Mark W. 
Published: July 2016

AbstractAn adhesive yet easily removable burn wound dressing represents a breakthrough in second‐degree burn wound care. Current second‐degree burn wound dressings absorb wound exudate, reduce bacterial infections, and maintain a moist environment for healing, but are surgically or mechanically debrided from the wound, causing additional trauma to the newly formed tissues. We have developed an on‐demand dissolvable dendritic thioester hydrogel burn dressing for second‐degree burn care. The hydrogel is composed of a lysine‐based dendron and a PEG‐based crosslinker, which are synthesized in high yields. The hydrogel burn dressing covers the wound and acts as a barrier to bacterial infection in an in vivo second‐degree burn wound model. A unique feature of the hydrogel is its capability to be dissolved on‐demand, via a thiol–thioester exchange reaction, allowing for a facile burn dressing removal.
Genetic Incorporation of a Reactive Isothiocyanate Group into Proteins
Authors: Xuan Weimin , Li Jack , Luo Xiaozhou , Schultz Peter G. 
Published: July 2016

AbstractMethods for the site‐specific modification of proteins are useful for introducing biological probes into proteins and engineering proteins with novel activities. Herein, we genetically encode a novel noncanonical amino acid (ncAA) that contains an aryl isothiocyanate group which can form stable thiourea crosslinks with amines under mild conditions. We show that this ncAA (pNCSF) allows the selective conjugation of proteins to amine‐containing molecular probes through formation of a thiourea bridge. pNCSF was also used to replace a native salt bridge in myoglobin with an intramolecular crosslink to a proximal Lys residue, leading to increased thermal stability. Finally, we show that pNCSF can form stable intermolecular crosslinks between two interacting proteins.
Controlling Spatial Heat and Light Distribution by Using Photothermal Enhancing Auto‐Regulated Liposomes (PEARLs)
Authors: Ng Kenneth K. , Weersink Robert A. , Lim Liang , Wilson Brian C. , Zheng Gang 
Published: July 2016

AbstractPhotothermal therapy (PTT) is enhanced by the use of nanoparticles with a large optical absorption at the treatment wavelength. However, this comes at the cost of higher light attenuation that results in reduced depth of heating as well as larger thermal gradients, leading to potential over‐ and under‐treatment in the target tissue. These limitations can be overcome by using photothermal enhancing auto‐regulating liposomes (PEARLs), based on thermochromic J‐aggregate forming dye–lipid conjugates that reversibly alter their absorption above a predefined lipid phase‐transition temperature. Under irradiation by near‐infrared light, deeper layers of the target tissue revert to the intrinsic optical absorption, halting the temperature rise and enabling greater light penetration and heat generation at depth. This effect is demonstrated in both nanoparticle solutions and in gel phantoms containing the nanoparticles.
A Halogen‐Bond‐Induced Triple Helicate Encapsulates Iodide
Authors: Massena Casey J. , Wageling Nicholas B. , Decato Daniel A. , Martin Rodriguez Enrique , Rose Ariana M. , Berryman Orion B. 
Published: July 2016

AbstractThe self‐assembly of higher‐order anion helicates in solution remains an elusive goal. Herein, we present the first triple helicate to encapsulate iodide in organic and aqueous media as well as the solid state. The triple helicate self‐assembles from three tricationic arylethynyl strands and resembles a tubular anion channel lined with nine halogen bond donors. Eight strong iodine⋅⋅⋅iodide halogen bonds and numerous buried π‐surfaces endow the triplex with remarkable stability, even at elevated temperatures. We suggest that the natural rise of a single‐strand helix renders its linear halogen‐bond donors non‐convergent. Thus, the stringent linearity of halogen bonding is a powerful tool for the synthesis of multi‐strand anion helicates.
Zirconocene‐Mediated Carbonylative Coupling of Grignard Reagents
Authors: Moss Melissa , Han Xinping , Ready Joseph M. 
Published: July 2016

AbstractOrganozirconocenes are versatile synthetic intermediates that can undergo carbonylation to yield acyl anion equivalents. Zirconocene hydrochloride ([Cp2ZrHCl]) is often the reagent of choice for accessing these intermediates but generates organozirconocenes only from alkenes and alkynes. This requirement eliminates a broad range of substrates. For example, organozirconocenes in which the zirconium center is bonded to an aromatic ring, a benzylic group, or an alkyl group that possesses a tertiary or quaternary carbon atom α to the carbon–zirconium bond can not be formed in this way. To provide more generalized access to acyl zirconium reagents, we explored the transmetalation of Grignard reagents with zirconocene dichloride under a CO atmosphere. This protocol generates acyl zirconium(IV) complexes that are inaccessible with the Schwartz reagent, including those derived from secondary and tertiary alkyl and aryl Grignard reagents.
Sigmatropic Rearrangement of Vinyl Aziridines: Expedient Synthesis of Cyclic Sulfoximines from Chiral Sulfinimines
Authors: Moragas Toni , Liffey Ryan M. , Regentová Dominika , Ward Jon‐Paul S. , Dutton Justine , Lewis William , Churcher Ian , Walton Lesley , Souto José A. , Stockman Robert A. 
Published: July 2016

AbstractA novel rearrangement of 2‐vinyl aziridine 2‐carboxylates to unusual chiral cyclic sulfoximines is described herein. The method allows the synthesis of substituted cyclic sulfoximines in high yields with complete stereocontrol, and tolerates a wide substrate scope. A one‐pot process starting directly from sulfinimines provides access to complex chiral sulfoximines in only two steps from commercially available aldehydes. A mechanistic hypothesis and synthetic application in the formal synthesis of trachelanthamidine, by transformation of a cyclic sulfoximine into a pyrroline, is also disclosed.
A Single Fluorescent Probe to Visualize Hydrogen Sulfide and Hydrogen Polysulfides with Different Fluorescence Signals
Authors: Chen Wei , Pacheco Armando , Takano Yoko , Day Jacob J. , Hanaoka Kenjiro , Xian Ming 
Published: July 2016

AbstractHydrogen sulfide (H2S) and hydrogen polysulfides (H2Sn, n>1) are endogenous regulators of many physiological processes. In order to better understand the symbiotic relationship and cellular cross‐talk between H2S and H2Sn, it is highly desirable to develop single fluorescent probes which enable dual‐channel discrimination between H2S and H2Sn. Herein, we report the rational design, synthesis, and evaluation of the first dual‐detection fluorescent probe DDP‐1 that can visualize H2S and H2Sn with different fluorescence signals. The probe showed high selectivity and sensitivity to H2S and H2Sn in aqueous media and in cells.
Thermally stable bromobutyl rubber with a high crosslinking density based on a 4,4′‐bismaleimidodiphenylmethane curing agent
Authors: Sathi Shibulal Gopi , Jang Jun Yeol , Jeong Kwang‐Un , Nah Changwoon 
Published: July 2016

ABSTRACTThe development of thermally stable bromobutyl rubbers has been a challenge in rubber chemistry and engineering. In this circumstance, 4,4′‐bismaleimidodiphenylmethane (BMI) was newly applied as a novel crosslinking agent for thermally stable brominated isobutylene–isoprene rubber (BIIR) with a high crosslinking density. With oscillating disk rheometry and differential scanning calorimetry, the curing characteristics of BIIR were systematically investigated with respect to the content of BMI. We found that BMI alone could crosslink BIIR at higher temperature, and a corresponding possible chemical reaction mechanism was proposed. With the introduction of zinc oxide, the curing reaction of BIIR with BMI was significantly accelerated, and the resulting vulcanizate provided a higher state of curing with excellent overcure reversion stability even at a temperature of 190 °C for 2 h. The content of the dicumyl peroxide (DCP) reaction accelerator was also optimized to be BMI/DCP = 1:0.05 on the basis of considerations of the curing rate, scorch safety, maximum rheometric torque, and reversion resistance at 160 °C. Compared with the conventional sulfur‐cured BIIR, the BMI‐cured BIIR exhibited a higher crosslinking density with a superior low compression set property at elevated temperatures and an excellent thermal stability. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44092.
Non‐isothermal crystallization kinetics of cork‐polymer composites for injection molding
Authors: Magalhães da Silva Sara P. , Lima Paulo S. , Oliveira José M. 
Published: July 2016

ABSTRACTThe non‐isothermal crystallization behavior of cork–polymer composites (CPC) based on polypropylene (PP) matrix was studied. Using differential scanning calorimetry (DSC), the crystallization behavior of CPC with 15 wt % cork powder at different cooling rates (5, 10, 15, and 20 °C/min) was studied. The effect of a coupling agent based on maleic anhydride was also analyzed. A composite (PPg) containing polypropylene grafted maleic anhydride (PPgMA) and PP was prepared for comparison purposes. Crystallization kinetic behavior was studied by Avrami, Ozawa, Liu, and Kissinger methods. The Ozawa method fails to describe the behavior of these composites. Results show that cork powder surface acts as a nucleating agent during non‐isothermal crystallization, while the addition of PPgMA decreases the crystallization rate. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44124.
Trajectory Tracking Control of XY Table Using Sliding Mode Adaptive Control Based on Fast Double Power Reaching Law
Authors: Wang Haoping , Zhao Xuankai , Tian Yang 
Published: July 2016

AbstractCurrently, high velocity and precision are the main developing directions of the XY table. However, the nonlinear effects of friction at low speed deteriorate the precision of the XY table servo system. As a result, it is very important to design a control method to carry out friction compensation and trajectory tracking. In this paper, dual sliding mode state observers are used to estimate these immeasurable parameters in the dynamic LuGre model, and the Lyapunov function is used to design the adaptive update law. In addition, fast double power reaching law has the advantage of improving the global asymptotic convergence rate and overcoming these disadvantages where traditional sliding mode control reaching law causes severe chattering. Simulation results that compare the proposed method with exponent sliding mode control and PID control, demonstrate that the fast double power sliding mode control guarantees position and speed signals, tracking the desired references asymptotically.
Synchronization Criteria for Complex Dynamical Networks with State and Coupling Time‐Delays
Authors: Kazemy Ali 
Published: July 2016

AbstractThis paper is concerned with the problem of synchronization of complex dynamical networks with state and coupling time‐delays. Therefore, larger class and more complicated complex dynamical networks could be considered for the synchronization problem. Based on the Lyapunov‐Krasovskii functional, some delay‐independent and delay‐dependent criteria are obtained and formulated in the form of linear matrix inequalities (LMIs) to ascertain the synchronization between each node of the complex dynamical network. The effectiveness of the proposed method is illustrated using some numerical simulations.
Preparation, characterization and luminescence properties of a new hydrous red phosphor CaB3O5(OH):Eu3+ with different morphologies
Authors: Huang H.S. , Tang A.J. , Yang C. , Jin H.F. 
Published: July 2016

AbstractA new borate phosphor CaB3O5(OH):Eu3+ with different morphologies was synthesized using a hydrothermal method and its luminescence properties were studied. The effects of surfactants on the crystal structures, morphologies and luminescence properties of the samples were studied. The results showed that the surfactants play an important role in controlling the morphology and improving the luminescence properties of phosphors. The luminescence intensity and R/O(I615/I592) value were enhanced for the prepared sample by adding PEG4000. The prepared sample exhibited a higher R/O than some anhydrous calcium borate phosphors, indicating that this product could serve as a new potential red phosphor.