bluuebunny/crossref_metadata_2025_split huggingface dataset:
3D Metamorphic Stretchable Microphone Arrays
Authors: Biswas Shantonu , Reiprich Johannes , Cohrs Thaden , Arboleda David T. , Schoeberl Andreas , Mozafari Mahsa , Schlag Leslie , Stauden Thomas , Pezoldt Joerg , Jacobs Heiko O. 
Published: August 2017

AbstractThis article describes the realization of a metamorphic microphone array. The array morphs from a concave to a planar and then to a convex shape. The morphing array enables a better (12×) sound source localization when compared to existing static and planar arrangements. To enable the realization, a novel stretchable (elongated up to 320% of the original length) printed circuit board fabrication process is reported. The fabrication process enables high‐temperature processing, alignment, and registration. Moreover, conventional and otherwise rigid surface mount devices (SMDs) can be used. The process allows the researcher to increase the number of devices (30 SMDs) and interconnects (60 in total) to the required level. As electrical connections, a polyimide‐cladded metal track design is reported; the design sustained 11 050 stretch and release cycles. Moreover, 3D reinforcement frames are reported as an effective measure to shield the SMD components from high levels of stress. The resulting products are millimeter‐thin stretchable rubber‐embedded and electrically interconnected electronic structures with mechanical rubber‐membrane‐like properties. Morphology changes involve deflation and inflation of the membrane to bulge inward or outward. Finally, the use of 3D‐shaped chaperon is discussed to provide additional shape control.
N2‐Selective Autocatalytic Ditriazolylation Reactions of Cyclopropenones and Tropone with N1‐Sulfonyl‐1,2,3‐triazoles
Authors: Li Long‐Hai , Jiang Yu , Hao Jian , Wei Yin , Shi Min 
Published: August 2017

AbstractN2‐Selective autocatalytic ditriazolylation reactions of cyclopropenones and tropone with N1‐sulfonyl‐1,2,3‐triazoles are reported for the first time. In contrast to previous methods for preparing N2‐substituted bis(1,2,3‐triazolyl) compounds, the present reaction achieved ditriazolylation in one step under simple and user‐friendly conditions with a wide substrate scope. A plausible mechanism has been proposed relying on preliminary mechanistic investigations.magnified image
Enzymatische Synthese von Psilocybin
Authors: Fricke Janis , Blei Felix , Hoffmeister Dirk 
Published: August 2017

AbstractPsilocybin ist der psychotrope, vom Tryptamin abgeleitete Naturstoff der Psilocybe‐Fruchtkörper, der so genannten “Zauberpilze”. Obwohl dessen Struktur seit 60 Jahren bekannt ist, blieb die enzymatische Grundlage ihrer Biosynthese ungeklärt. Wir charakterisierten vier Psilocybin‐Biosyntheseenzyme, nämlich i) PsiD, welches zu einer neuen Klasse pilzlicher l‐Tryptophan‐Decarboxylasen gehört, ii) PsiK, welches den Phosphotransfer‐Schritt katalysiert, iii) die Methyltransferase PsiM, welche einen wiederholten N‐Methyltransfer als abschließenden Biosyntheseschritt katalysiert, sowie iv) PsiH, eine Monooxygenase. In einer kombinierten Reaktion mit PsiD, PsiK und PsiM wurde Psilocybin vom 4‐Hydroxy‐l‐tryptophan ausgehend nach einer schrittökonomischen Route synthetisiert. Angesichts des wieder aufkommenden pharmazeutischen Interesses an Psilocybin könnten unsere Ergebnisse die Grundlage für dessen biotechnologische Produktion schaffen.
Preparation of poly(NaSS‐co‐HEMA) self‐supporting nanofiltration membrane with high cationic permselectivity by electrospinning
Authors: Ni Henmei , Zhou Jinhui , Yang Yadong , Ji Jie , Wu Min 
Published: August 2017

ABSTRACTA crosslinked nanofibrous cation exchange membrane with high ion permeability and robust mechanical properties was fabricated by electrospinning. Copolymer, poly(sodium styrene sulfonate‐co‐2‐hydroxyethyl methacrylate), was selected as the electrospun material. Fourier transform infrared spectroscopy, 1H‐nuclear magnetic resonance, and scanning electron microscopy were employed to characterize the copolymer and nanofibrous mat. After a series of preliminary experiments, the proper solvents and their ratio, H2O/tetrahydrofuran/N,N′‐dimethylformamide (2/1/3 vol/vol/vol), was selected and the electrospinning optimal parameters were determined by orthogonal experiments. Formaldehyde vapor was employed to crosslink the mat. It was observed that the water sorption decreased from 47.9% to 18.4% as the crosslinking time increased from 20 to 32 h. The robust mat with the high tensile strength of 4.85 MPa and 40% elongation at break was obtained at 28 h. The permselectivities of Na+, K+, and Ca2+ were 89%, 85%, and 81%, respectively. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45541.
Frequency Interval Gramians Based Structure Preserving Model Order Reduction for Second Order Systems
Authors: Haider Shafiq , Ghafoor Abdul , Imran Muhammad , Malik Fahad Mumtaz 
Published: August 2017

AbstractA new structure preserving model order reduction technique for second order systems in limited frequency interval is presented. Frequency limited Gramians (FLGs) and corresponding continuous time algebraic lyapunov equations (CALEs) are developed. For solution of CALEs and Cholesky factorization of FLGs, computationally efficient approximation scheme is proposed. Multiple transformations based on balancing of frequency limited position or velocity Gramians are defined in order to compute Hankel singular values (HSVs). Frequency limited second order balanced truncation based on magnitudes of HSVs is performed for order reduction. Moreover, stability conditions for reduced order models (ROMs) are stated and algorithms for achieving stability in ROMs are proposed. Results are compared with existing technique to certify the usefulness of the proposed technique.
Perceptions of voluntary consent among jail diverted veterans with co‐occurring disorders
Authors: Trojano Max L. , Christopher Paul P. , Pinals Debra A. , Harnish Autumn , Smelson David 
Published: August 2017

This study assessed perceptions of voluntary consent among 69 veterans who enrolled in a “jail diversion” program for co‐occurring disorders. Perceptions were measured using modified items from the MacArthur Perceived Coercion and Negative Pressure Scales. A majority reported that they “chose to” (88.4%) or “felt free to” (85.5%) enroll. Most reported having “control over” (69.6%) and “more influence than anyone else” regarding (60.9%) their participation. About half reported that enrollment was “their idea” (49.3%). Fewer reported perceptions of negative pressure, including the feeling that someone “talked them into” enrolling (24.6%), “threatened them with the maximum criminal punishment” (13.0%), “offered or promised them something” (5.8%), or “forced” them to enroll (5.8%). Nobody felt “tricked, lied to, or fooled into” participating. Total negative pressure scores were higher in those with combat experience, U = 406.50, p = .016. Although potentially inappropriate pressures were reported, these data suggest that the majority perceived enrollment as voluntary.
Parallel DNA Synthesis on Poly(ethylene terephthalate)
Authors: Holden Matthew T. , Carter Matthew C. D. , Ting Shannon K. , Lynn David M. , Smith Lloyd M. 
Published: August 2017

AbstractThe fabrication of DNA arrays directly on aminolyzed sheets of poly(ethylene terephthalate) (PET) is described. Array surfaces typically employ bifunctional linkers or layers of covalently attached polymers to provide substrate hydroxy groups as synthesis attachment points. An amine treatment is used here to expose hydroxy groups on films of PET. These hydroxy groups can then be used to couple phosphoramidites and initiate the array synthesis without further functionalization steps. Arrays fabricated on these substrates with a maskless array synthesizer are tolerant of the high number of chemical exposure steps required to synthesize relatively long oligonucleotides. The results might be of the greatest use to the synthetic biology community, for whom a flexible and robust substrate could enable new strategies to enhance the throughput of oligonucleotide synthesis.
MnAl Layered Double Hydroxide Nanoparticles as a Dual‐Functional Platform for Magnetic Resonance Imaging and siRNA Delivery
Authors: Zuo Huali , Chen Weiyu , Li Bei , Xu Kewei , Cooper Helen , Gu Zi , Xu Zhi Ping 
Published: August 2017

AbstractMultifunctional nanoparticles for cancer theranosis have been widely explored for effective cancer detection and therapy. In this work, dually functionalised manganese‐based layered double hydroxide nanoparticles (Mn‐LDH) were examined as an effective anticancer drug/gene delivery system and for T1‐weighted magnetic resonance imaging (MRI) in brain cancer theranostics. Such Mn‐LDH have been shown to accommodate dsDNA/siRNAs and efficiently deliver them to Neuro‐2a cells (N2a). Mn‐LDH have also shown high biocompatibility with low cytotoxicity. Importantly, the cell‐death siRNA (CD‐siRNA) delivered with Mn‐LDH more efficiently kills brain cancer cells than the free CD‐siRNA. Moreover, Mn‐LDH can act as excellent contrast agents for MRI, with an r1 value of 4.47 mm−1 s−1, which is even higher than that of commercial contrast agents based on Gd complexes (r1=3.4 mm−1 s−1). Altogether, the high delivery efficacy and MRI contrast capability make dual‐functional Mn‐LDH potential bimodal agents for simultaneous cancer diagnosis and therapy.
Self‐Templating Construction of Hollow Amorphous CoMoS4 Nanotube Array towards Efficient Hydrogen Evolution Electrocatalysis at Neutral pH
Authors: Wang Weiyi , Ren Xiang , Hao Shuai , Liu Zhiang , Xie Fengyu , Yao Yadong , Asiri Abdullah M. , Chen Liang , Sun Xuping 
Published: August 2017

AbstractEnvironmentally friendly electrochemical hydrogen production needs the development of earth‐abundant catalyst materials for the hydrogen evolution reaction with high activity and durability at neutral pH. In this work, the self‐templating construction of a hollow amorphous CoMoS4 nanotube array on carbon cloth (CoMoS4 NTA/CC) is reported, using hydrothermal treatment of a Co(OH)F nanowire array on CC in (NH4)2MoS4 solution. When used as a 3D electrode for hydrogen evolution electrocatalysis, the resulting CoMoS4 NTA/CC demonstrates superior catalytic activity and strong long‐term electrochemical durability in 1.0 M phosphate buffer solution (pH=7). It shows small onset overpotential of 21 mV and requires low overpotentials of 104 and 179 mV to drive geometrical current densities of 10 and 50 mA cm−2, respectively. Density functional theory calculations suggest that CoMoS4 has a more favorable hydrogen adsorption free energy than Co(OH)F.
Small‐Molecule‐Induced Soluble Oligomers of α‐Synuclein with Helical Structure
Authors: Fonseca‐Ornelas Luis , Schmidt Carla , Camacho‐Zarco Aldo R. , Fernandez Claudio O. , Becker Stefan , Zweckstetter Markus 
Published: August 2017

AbstractAccumulation of α‐synuclein (αSyn) aggregates constitutes the hallmark of synucleinopathies including Parkinson's disease. However, many steps from the innocuous, monomeric αSyn toward misfolded oligomers and fibrillar species remain unclear. Here, we show that αSyn can form in solution α‐helical oligomers, which are off‐pathway to fibrillization, through interaction with the tetrapyrrole phthalocyanine tetrasulfonate. Chemical cross‐linking combined with mass spectrometry reveals a large number of intermolecular cross‐links along the entire αSyn sequence in the phthalocyanine tetrasulfonate‐stabilized αSyn oligomers. Our study suggests that stabilization of structured oligomers by small molecules provides a viable strategy to interfere with αSyn fibrillization.
Classifying malwares for identification of author groups
Authors: Hong Jiwon , Park Sanghyun , Kim Sang‐Wook , Kim Dongphil , Kim Wonho 
Published: August 2017

SummaryMalwares are growing exponentially in number, and authors of malwares are continuously releasing new ones. Malwares developed by the same author group might have similar signatures. For a number of applications including digital forensic and law enforcement, such characteristics can be used to determine which author group is likely to have released a given malware. In this paper, we describe a new type of classification that identifies which group of authors is most likely to have developed a given malware. We identify and verify a set of various features obtained through static and dynamic analyses of malwares and exploit them for classification. We evaluate our approach through extensive experiments with a real‐world dataset labeled by a group of domain experts. The results show that our approach is effective and provides good accuracy in malware classification.
Venipuncture Procedures: Sources of Human Peripheral Blood Cells, Serum, and Plasma
Authors: Bierer Barbara E. , Strober Warren 
Published: August 2017

AbstractPeripheral blood is the chief source of mononuclear cells (lymphocytes and monocytes) for immunologic studies of humans. This appendix presents protocols for obtaining blood by simple venipuncture when relatively small amounts of blood (10 to 100 ml) are necessary or by lymphapheresis when large amounts (300 to 5000 ml) are necessary. Cells collected by these procedures can be further separated by techniques described in Chapter 7. © 2017 by John Wiley & Sons, Inc.
High‐Dimensional Single‐Cell Analysis with Mass Cytometry
Authors: Brodie Tess Melinda , Tosevski Vinko 
Published: August 2017

AbstractMass cytometry is an analytical technology that combines the sample preparation workflow typical of flow cytometry and the detection capacity of atomic mass spectroscopy, allowing for highly multiplexed measurements of protein or nucleic acid targets on single cells. In 2014, the mass cytometer was adapted for the acquisition of samples from microscopy slides (termed imaging mass cytometry), greatly increasing the applicability of this technology. By using antibodies (or other probes) labeled with purified metal isotopes, the mass cytometer is able to detect up to 50 different parameters (current practical limit) at the single‐cell level, enabling a deep and thorough profiling of individual cells in terms of their cell surface protein phenotype, physiological state, proliferation potential, and many other cell states or features. © 2017 by John Wiley & Sons, Inc.
Nomenclature and Serology of HLA Class I and Class II Alleles
Authors: McCluskey James , Kanaan Carmel , Diviney Mary 
Published: August 2017

AbstractThis overview presents nomenclature and serology information on human leucocyte antigens, or HLA molecules, which are encoded by a cluster of genes linked on the short arm of chromosome 6. This region is known as the major histocompatibility complex and codes for class I and class II molecules, which are distinguished from each other based upon their structure, tissue distribution, and source of peptide antigen, as well as upon their interactions with T cell subsets. © 2017 by John Wiley & Sons, Inc.
Scalable intraband wavelet‐based coding scheme for irregular meshes
Authors: Toueti Marouen , Ouled Zaid Azza 
Published: August 2017

SummaryThis paper describes a novel scalable 3D triangular mesh coding method based on wavelet transform and successive approximation quantization. The algorithm efficiently exploits the intracorrelations between wavelet coefficients independently in each subband. Non‐significant wavelet coefficients are clustered, in a per bit‐plane manner, by using an octree‐based approach. An hierarchical bitstream is then generated allowing to gradually decode the 3D mesh at the desired quality or resolution representation. Our proposal can be executed on arbitrary topology meshes by using irregular wavelet decomposition. Objective and subjective quality evaluation on representative 3D meshes shows that the proposed codec provides competitive compression results when compared to the state‐of‐the‐art. Furthermore, it fits well to applications that require fast interactive handling of highly detailed 3D meshes, over networks with limited and/or variable bandwidth.
Absence of Notch1 in murine myeloid cells attenuates the development of experimental autoimmune encephalomyelitis by affecting Th1 and Th17 priming
Authors: Fernández Miriam , Monsalve Eva M. , López‐López Susana , Ruiz‐García Almudena , Mellado Susana , Caminos Elena , García‐Ramírez José Javier , Laborda Jorge , Tranque Pedro , Díaz‐Guerra María José M. 
Published: August 2017

AbstractInhibition of Notch signalling in T cells attenuates the development of experimental autoimmune encephalomyelitis (EAE), a mouse model of multiple sclerosis. Growing evidence indicates that myeloid cells are also key players in autoimmune processes. Thus, the present study evaluates the role of the Notch1 receptor in myeloid cells on the progression of myelin oligodendrocyte glycoprotein (MOG)35‐55‐induced EAE, using mice with a myeloid‐specific deletion of the Notch1 gene (MyeNotch1KO). We found that EAE progression was less severe in the absence of Notch1 in myeloid cells. Thus, histopathological analysis revealed reduced pathology in the spinal cord of MyeNotch1KO mice, with decreased microglia/astrocyte activation, demyelination and infiltration of CD4+ T cells. Moreover, these mice showed lower Th1 and Th17 cell infiltration and expression of IFN‐γ and IL‐17 mRNA in the spinal cord. Accordingly, splenocytes from MyeNotch1KO mice reactivated in vitro presented reduced Th1 and Th17 activation, and lower expression of IL‐12, IL‐23, TNF‐α, IL‐6, and CD86. Moreover, reactivated wild‐type splenocytes showed increased Notch1 expression, arguing for a specific involvement of this receptor in autoimmune T cell activation in secondary lymphoid tissues. In summary, our results reveal a key role of the Notch1 receptor in myeloid cells for the initiation and progression of EAE.
Catalytic Reduction of Bisulfite by Myoglobin/Surfactant Films
Authors: Abdelatty Radalla , Rahman Md. Hafizur , Ryan Michael D. 
Published: August 2017

AbstractThe voltammetry of bisulfite at a film formed with myoglobin was studied in aqueous solutions. A broad wave was observed for the reduction of bisulfite. Using controlled potential electrolysis, the reduction at potentials positive of the FeII/FeI wave formed dithionite exclusively. As the potential approached the region for the FeII/FeI reduction, bisulfite was reduced primarily to HS−. Even at the negative potentials, some dithionite was still formed, which could then be electrochemically reduced to thiosulfate. Analysis of the formation of HS−, dithionite and thiosulfate during the electrolysis was consistent with the parallel formation of HS− and dithionite, the latter of which was reduced to thiosulfate. Thiosulfate was verified by chemical analysis of the products from controlled potential electrolysis of the solution, and dithionite was observed spectroscopically using spectroelectro−chemistry.
Photocatalytic activity of erbium‐doped CeO2 enhanced by reduced graphene Oxide/CuO cocatalyst for the reduction of CO2 to methanol
Authors: Shi Sheng‐Jie , Zhou Shan‐Shan , Liu Shou‐Qing , Chen Zhi‐Gang 
Published: August 2017

A series of erbium‐doped CeO2 composites loaded with reduced graphene oxide (rGO, denoted as Er‐doped CeO2/rGO) were prepared via a hydrothermal method. The crystal structures, morphological characteristics, and surface physicochemical properties of the as‐prepared Er‐doped CeO2/rGO composites were characterized through X‐ray diffraction, transmission electron microscopy, Raman spectroscopy, ultraviolet–visible diffuse reflection spectroscopy, and X‐ray photoelectron spectroscopy. The photocatalytic activities of the composite samples were further evaluated by reducing CO2 to methanol. Results show that erbium (III) doping caused a red shift of the response spectrum from 392 nm to 451 nm, and that rGO loading induced a response spectrum shift to 467.9 nm. The corresponding reduction yields of CO2 to methanol approached 42.5 and 135.6 μmol g−1cat h−1 for Er‐doped CeO2/CuO and Er‐doped CeO2/rGO/CuO catalysts under similar conditions in 5 h, respectively. Accordingly, rGO enhances significantly the yield of the photocatalytic reduction of CO2 to methanol. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 655–662, 2018
Assimilation efficiency of sediment-bound PCBs ingested by fish impacted by strong sorption
Authors: Fadaei Hilda , Williams Ernest , Place Allen R. , Connolly John P. , Ghosh Upal 
Published: August 2017

Abstract

Uptake of polychlorinated biphenyls (PCBs) by fish is controlled by the bioavailability of ingested PCBs in the gut and the freely dissolved concentration in the water moving across the gills. The prediction of bioaccumulation in fish relies on models that account for these exposure routes; however, these models typically do not account for incidental ingestion of sediment by fish, which is not well studied. The literature values for the PCB assimilation efficiency in the gut have been reported for compounds in food matrices and not associated with sediment particles. It is also unclear how mitigation strategies that alter PCB bioavailability in sediments affect predictions made by the bioaccumulation models when sediment ingestion is involved. To test the bioavailability of PCBs from treated and untreated sediments, dietary assimilation efficiencies were measured for 16 PCB congeners in mummichogs (Fundulus heteroclitus) that were fed 4 experimental diets. Diets consisted of PCB-spiked earthworms, spiked untreated sediment mixed with earthworms, spiked activated carbon-treated sediment mixed with earthworms, and spiked activated carbon mixed with earthworms. Assimilation efficiencies were determined by calculating the ratio of PCB mass in the fish tissue to the PCB mass in the food after a pulse feeding experiment. Assimilation efficiencies of PCBs associated with earthworm diet were similar to the values reported in the literature. Fish that were fed the PCB-spiked untreated sediment and activated carbon particles exhibited the highest and lowest assimilation efficiencies, respectively, over a wide KOW range. Assimilation efficiencies of sediment-bound PCBs were significantly reduced (31–93% reduction for different congeners) after amendment with activated carbon. The present study indicates that assimilation of PCBs can be reduced by sorption to black carbon. Environ Toxicol Chem 2017;36:3480–3488. © 2017 SETAC
No evidence that kin selection increases the honesty of begging signals in birds
Authors: Bebbington Kat , Kingma Sjouke A. 
Published: August 2017

AbstractProviding plausible mechanisms to explain variation in the honesty of information communicated through offspring begging signals is fundamental to our understanding of parent–offspring conflict and the evolution of family life. A recently published research article used comparative analyses to investigate two long-standing hypotheses that may explain the evolution of begging behavior. The results suggested that direct competition between offspring for parental resources decreases begging honesty, whereas indirect, kin-selected benefits gained through saving parental resources for the production of future siblings increase begging honesty. However, we feel that evidence for a role of kin selection in this context is still missing. We present a combination of arguments and empirical tests to outline alternative sources of interspecific variation in offspring begging levels and discuss avenues for further research that can bring us closer to a complete understanding of the evolution of offspring signaling.