bluuebunny/crossref_metadata_2025_split huggingface dataset:
Compact ultra‐wideband bandpass filter with notch band based on the impedance matching method
Authors: Trabelsi Mohamed , Taibi Abdelkader , Slimane Abdelhalim , Saadi Abdelhalim A. , Tahar Belaroussi Mohand , Raskin Jean‐Pierre 
Published: June 2016

ABSTRACTIn this work, a new ultra‐wideband (UWB) bandpass filter (BPF) with notch band (NB) at 5–6 GHz is presented. The design is performed using the impedance matching method based on optimization of objective function defined in the frequency range 3.1–10.6 GHz. The filter structure is composed of uniform transmission line loaded, at its center, with stepped impedance stub to generate two transmission zeros at cutoff frequencies, and uniform transmission line stub for NB purpose. The fabricated filter has a compact size of 306.17 mm2 and fulfills the UWB BPF specifications with a sharp selectivity and an efficient cancellation of two Wireless Local Area Network frequencies (5.2 and 5.8 GHz). © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2176–2178, 2016
Single‐/Dual‐FBG‐based gain controller of gain‐clamped L‐band erbium‐doped fiber amplifier with high gain and flatness
Authors: Jiuru Yang , Xiangyu Meng , Chunyu Liu 
Published: June 2016

ABSTRACTIn this letter, we report a novel fiber Bragg grating (FBG)‐based gain controller to simultaneously flatten and clamp the gain spectrum of a long‐wavelength‐band (L‐band) erbium‐doped fiber amplifier (EDFA). Respectively, the single‐ and dual‐FBG schemes are experimentally conducted and investigated in terms of flatness and dynamic stability with various central wavelengths. The results show that, under a suitable central wavelength of FBGs, the high average gain (over 22 dB) and ±0.1 dB stability in ∼30 dBm dynamic range is together guaranteed in our designed amplifier. In gain‐flatness, dual‐FBG scheme presents a smaller fluctuation (∼0.93 dB) in the range of 1570–1610 nm by accurately adjusting the voltage of PZT driver. Comparatively, single‐FBG scheme is more practical and controls the gain‐fluctuation of EDFA below 1.62 dB in the whole L‐band. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2168–2171, 2016
A microstrip antenna based on a standing‐wave fractal geometry for CubeSat applications
Authors: Ángel Figueroa‐Torres Cruz , Luis Medina‐Monroy José , Lobato‐Morales Humberto , Arturo Chávez‐Pérez Ricardo , Calvillo‐Téllez Andrés 
Published: June 2016

ABSTRACTA planar antenna based on the open‐loop standing‐wave radiator following a fractal design is presented in this paper. The proposed antenna operates at 2.45 GHz with circular polarization and directional radiation, and is designed over an FR‐4 substrate. Design methodology and optimization of the structure are detailed. Simulated and experimental results are presented with good agreement between them. Due to its radiation characteristics, reduced dimensions, and low weight, the proposed antenna is an excellent candidate for CubeSat applications. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2210–2214, 2016
Construction material mountable UHF RFID tag antenna
Authors: Jayawardana Devaka , Kharkovsky Sergey , Liyanapathirana Ranjith 
Published: June 2016

ABSTRACTThis article presents a tag antenna for radio frequency identification (RFID)‐based wireless structural health monitoring systems. An ultra‐high frequency (UHF) microstrip patch tag antenna is designed with a new generation RFID tag chip for the Australian UHF RFID frequency band. Simulation studies with optimized slits demonstrate the ability of the antenna to tolerate the influence of construction materials such as concrete and metal on its resonant frequency, maximum gain, and read range. Noncontact measurement of the resonant frequency and experimental verification of the maximum gain of the fabricated tag antenna show good agreement with simulated performance. Read range measurements are conducted to verify the performance of the tag antenna on metal structures. It is also shown that the proposed tag antenna can be easily modified to operate in other UHF RFID frequency bands. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2231–2237, 2016
Dual‐band bandstop filter with tunable lower stopband based on double‐layer structure
Authors: Chen Zhi‐Han , Zhang Shi‐Xuan , Chu Qing‐Xin 
Published: June 2016

ABSTRACTA novel reconfigurable dual‐band bandstop filter (DBBSF) with tunable lower stopband is presented. This DBBSF is a double‐layer structure composed of a pair of quarter wavelength (λ/4) open‐end resonators on the top layer and a pair of novel slot‐shaped structures occupying the bottom layer. Two varactors embedded in the λ/4 resonators are utilized to adjust the center frequency of the first stopband. Without increasing size, a fixed stopband located at 2.76 GHz is produced by the slot‐shaped defected ground structure (DGS). Both stopbands are independent of each other thus great design flexibility can be obtained. For demonstration, a prototypical filter is implemented with tunable lower stopband of 1.47–1.84 GHz (22.4%) and a fixed upper stopband at 2.76 GHz. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2273–2276, 2016
The in‐phase reflection bandwidth theoretical limit of artificial magnetic conductors based on transmission line model
Authors: Xie Yunsong , Fan Xin , Chen Yunpeng , Wilson Jeffrey D. , Simons Rainee N. , Xiao John Q. 
Published: June 2016

ABSTRACTBased on the transmission line model, the in‐phase reflection (IPR) bandwidth theoretical limit using a function of permeability (μ) and thickness (h) of the substrate as well as center frequency of IPR (f) was expressed. An experimental design strategy was further derived from this function for creating novel artificial magnetic conductors (AMCs). To date, they have successfully designed, simulated, and experimentally verified this proposed strategy with various AMCs, where the bandwidth ratio to the theoretical limit can be achieved by as high as 98.5%. This newly proposed theoretical limit function was further evaluated in two‐ways, (1) our theoretical limit was compared with previously reported literature values, and (2) literature values were recalculated using our function. Herein, it was concluded that their IPR bandwidth theoretical limit function provided most restrictive and accurate value, and their AMC design strategy has showed evident advantages over literature. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2257–2261, 2016
Investigation of influence of particle characteristics on the non‐coaxiality of anisotropic granular materials using DEM
Authors: Jiang Mingjing , Sima Jun , Li Liqing , Zhou Chuangbin , Cui Liang 
Published: June 2016

SummaryAs a result of deposition process and particle characteristics, granular materials can be inherently anisotropic. Many researchers have strongly suggested that the inherent anisotropy is the main reason for the deformation non‐coaxiality of granular materials. However, their relationships are not unanimous because of the limited understanding of the non‐coaxial micro‐mechanism. In this study, we investigated the influence of inherent anisotropy on the non‐coaxial angle using the discrete element method. Firstly, we developed a new discrete element method approach using rough elliptic particles and proposed a novel method to produce anisotropic specimens. Secondly, the effects of initial specimen density and particle characteristics, such as particle aspect ratio Am, rolling resistance coefficient β, and bedding plane orientation δ, were examined by a series of biaxial tests and rotational principal axes tests. Findings from the numerical simulations are summarized as follows: (1) the peak internal friction angle ϕp and the non‐coaxial angle i both increase with the initial density, Am and β, and they both increase initially and then decrease with δ in the range of 0–90°; (2) among the particle characteristics, the influence of Am is the most significant; and (3) for anisotropic specimens, the non‐coaxial angle can be calculated using the double slip and rotation rate model. Then, an empirical formula was proposed based on the simulation results to depict the relationship between the non‐coaxial angle and the particle characteristics. Finally, the particle‐scale mechanism of non‐coaxiality for granular materials was discussed from the perspective of energy dissipation. Copyright © 2016 John Wiley & Sons, Ltd.
Design and implementation of application programming interface for Internet of things cloud
Authors: Hou Lu , Zhao Shaohang , Li Xing , Chatzimisios Periklis , Zheng Kan 
Published: June 2016

SummaryInternet of things (IoT) technologies have developed rapidly to provide various applications and services, which benefit much on both industrial production and human lives. Meanwhile, with the deployment of cloud computing, the requirements of computing and storage capabilities of IoT can be well supported. The well‐designed application programming interfaces (APIs) are needed to offer good services of IoT cloud. APIs serve as the endpoints of services and offer convenient ways for either developers to design applications or vendors/OEMs to manufacture devices. In this paper, the design and implementation of APIs for IoT cloud is presented in detail. Taking the large number of resource‐constrained IoT devices into account, we propose the different kinds of APIs with different application protocols. APIs offer integrations between server‐side applications and client‐side applications or devices; thus, the specific implementation of APIs on these three parts are presented. Finally, a number of experiments are conducted to evaluate the performance of the designed APIs, and the result analysis is given as well. Copyright © 2016 John Wiley & Sons, Ltd.
Structure of the sirtuin‐linked macrodomain SAV0325 from Staphylococcus aureus
Authors: Appel C. Denise , Feld Geoffrey K. , Wallace Bret D. , Williams R. Scott 
Published: June 2016

AbstractCells use the post‐translational modification ADP‐ribosylation to control a host of biological activities. In some pathogenic bacteria, an operon‐encoded mono‐ADP‐ribosylation cycle mediates response to host‐induced oxidative stress. In this system, reversible mono ADP‐ribosylation of a lipoylated target protein represses oxidative stress response. An NAD+‐dependent sirtuin catalyzes the single ADP‐ribose (ADPr) addition, while a linked macrodomain‐containing protein removes the ADPr. Here we report the crystal structure of the sitruin‐linked macrodomain protein from Staphylococcus aureus, SauMacro (also known as SAV0325) to 1.75‐Å resolution. The monomeric SauMacro bears a previously unidentified Zn2+‐binding site that putatively aids in substrate recognition and catalysis. An amino‐terminal three‐helix bundle motif unique to this class of macrodomain proteins provides a structural scaffold for the Zn2+ site. Structural features of the enzyme further indicate a cleft proximal to the Zn2+ binding site appears well suited for ADPr binding, while a deep hydrophobic channel in the protein core is suitable for binding the lipoate of the lipoylated protein target.
Calcium Complexes Having Different Amidinate Ligands ‐ Synthesis and Structural Diversity
Authors: Anga Srinivas , Bhattacharjee Jayeeta , Banerjee Indrani , Nayek Hari Pada , Panda Tarun K. 
Published: June 2016

AbstractA one‐pot reaction of α‐diimine ligand 1,4‐disubstituted diazabutadienes (DAD) with potassium benzyl and anhydrous calcium iodide in 1:1:1 molar ratio afforded unprecedented 3‐phenylprop‐2‐ene‐di‐amido calcium compound [κ2‐(THF)4Ca{DippNC(=CHPh)CH2NDipp}] (1) (Dipp = 2,6‐diisopropylphenyl) in good yield. The solid‐state structure of the compound 1 revealed the formation of dianionic 3‐phenylprop‐2‐ene‐di‐amido ligand having an exocyclic olefinic bond derived from neutral α‐diimine fragment. However, analogous reactions with three different carbodiimides (RN=C=NR; R=Cy, iPr and tBu) with alkyl potassium and anhydrous calcium diiodide yielded corresponding homoleptic calcium compounds with amidinato ligand [κ2‐(THF)2Ca{RN=C(CH2Ph)NR}2] [R=Cy (2), iPr (3) and tBu (4)]. A separate reaction of DAD ligand, LiCH2SiMe3 and anhydrous ZnCl2 in diethylether solvent produced tri‐coordinated zinc compound [κ2‐ {DippN=C(CH2SiMe3)CH2NDipp}Zn[κ1‐{DippN=C(CH2SiMe3)CH2N‐Dipp}] (5) having amidinato moieties in the zinc coordination sphere in high yield. Molecular structures of compounds 2–5 in their solid states were also established.
Comparing Nucleophilicity of Heavier Heteroleptic Amidinato‐Amido Tetrelylenes: An Experimental and Theoretical Study
Authors: Parvin Nasrina , Pal Shiv , Rojisha Vallyanga Chalil , De Susmita , Parameswaran Pattiyil , Khan Shabana 
Published: June 2016

AbstractIn our previous communication we have reported the isolation and reactivity of heteroleptic three coordinated silylene, LSi(2,6‐iPr2C6H3NPPh2) [L= PhC(NtBu)2] (2). Here we report the isolation of analogous germylene and stannylene, LGe(2,6‐iPr2C6H3NPPh2) (6) and LSn(2,6‐iPr2C6H3NPPh2) (7) from the reaction of 2,6‐iPr2C6H3N(Li)PPh2 (1) with LGeCl (4) and LSnCl (5), respectively. Both compounds are characterized by multinuclear NMR spectroscopy, EI‐mass spectrometry, and single crystal X‐ray diffraction studies. The comparison of the molecular orbitals and the molecular electrostatic potential (ESP) maps on the van der Waal's surface of the atoms in silylene (2), germylene (6), and stannylene (7) indicate that nucleophilicity of the group‐14 atom reduces from silylene to stannylene. The Si‐center is more nucleophilic than P‐center in 2, whereas Ge and P‐ centers have similar nucleophilicity in 6 and Sn‐center is much less nucleophilic than P‐center in 7. The global minimum of the ESP of 2 is in the direction of the lone pair on Si, whereas the global minimum of the ESP of 6 and 7 is located above 2,6‐iPr2‐C6H3 ring on the N‐atom and in the opposite direction of the P‐center. This is supported by the observation that silylene 2 forms complex with AuCl by coordinating with Si‐center, whereas germylene 6 and stannylene 7 do not form the analogous adducts.
Selective Catalytic Reduction of NO by NH3 over Photocatalysts (Photo‐SCR): Mechanistic Investigations and Developments
Authors: Yamamoto Akira , Teramura Kentaro , Tanaka Tsunehiro 
Published: June 2016

AbstractThis account describes the work of our group in the selective catalytic reduction of nitrogen oxides (NOx) with ammonia over heterogeneous photocatalysts (photo‐SCR) in the past 16 years. We have found that the photo‐SCR proceeds over heterogeneous photocatalysts using a gas flow reactor, elucidated the reaction mechanism under UV‐ and visible‐light irradiation by spectroscopic and kinetic studies, and developed a highly active photo‐SCR system by improving the photocatalyst material itself and the reaction system with several approaches based on the reaction mechanism.
Translating the epitranscriptome
Authors: Hoernes Thomas Philipp , Erlacher Matthias David 
Published: June 2016

RNAmodifications are indispensable for the translation machinery to provide accurate and efficient protein synthesis. Whereas the importance of transfer RNA (tRNA) and ribosomal RNA (rRNA) modifications has been well described and is unquestioned for decades, the significance of internal messenger RNA (mRNA) modifications has only recently been revealed. Novel experimental methods have enabled the identification of thousands of modified sites within the untranslated and translated regions ofmRNAs. Thus far,N6‐methyladenosine (m6A), pseudouridine (Ψ), 5‐methylcytosine (m5C) andN1‐methyladenosine (m1A) were identified in eukaryal, and to some extent in prokaryal mRNAs. Several of the functions of these mRNA modifications have previously been reported, but many aspects remain elusive. Modifications can be important factors for the direct regulation of protein synthesis. The potential diversification of genomic information and regulation of RNA expression through editing and modifying mRNAs is versatile and many questions need to be addressed to completely elucidate the role of mRNA modifications. Herein, we summarize and highlight some recent findings on various co‐ and post‐transcriptional modifications, describing the impact of these processes on gene expression, with emphasis on protein synthesis.WIREs RNA2017, 8:e1375. doi: 10.1002/wrna.1375This article is categorized under:RNA Structure and Dynamics > RNA Structure, Dynamics, and ChemistryTranslation > Translation MechanismsRNA Processing > RNA Editing and Modification
Nickel(II), Cadmium(II), and Copper(II) Complexes Based on Ditopic Terpyridine Derivative Ligand: Syntheses, Crystal Structures, and Luminescent Properties
Authors: Zhang Ai‐Jiang , Chen Chang‐Juan , Lou Dong‐Yang , Miao Yu‐Hang , Qiao Chen‐Xu , Hu Jiang‐Bo 
Published: June 2016

AbstractThree complexes with the ditopic ligand 4′‐[4‐(quinolin‐8‐yloxymethyl)phenyl]‐2,2′:6′,2′′‐terpyridine (abbreviated as L), [Ni(L)2](CH3COO)2 (1), [Cd(L)2](ClO4)2 (2), and [Cu2(L)2](ClO4)4·4DMF (3), were synthesized and characterized by elemental analysis, IR spectroscopy, and structurally analyzed by X‐ray single‐crystal diffraction. Interestingly, in complexes 1 and 2, two ligands adopt a tridentate chelating pattern where the oxaquinoline group is non‐coordinated and coordinate with one MII ion (M = Ni for 1, M = Cd for 2) to form a mononuclear unit. In complex 3, two ligands bridge two CuII ions by pyridyl N atoms, ethereal O atoms, and quinolyl N atoms in a head‐to‐tail mode to generate a dinuclear [Cu2L2] unit. Moreover, extended 1D and 2D supramolecular architectures are further constructed in 1–3 by multiple secondary interactions such as aromatic stacking and hydrogen bonding. Notably, the structural diversity of complexes 1–3 can be properly assigned to the central metal ions that have distinct coordination preferences. In addition, luminescent properties of the ligand and complex 2 were also investigated.
The interaction between anxiety sensitivity and cigarette smoking level in relation to sleep onset latency among adolescent cigarette smokers
Authors: Bilsky Sarah A. , Feldner Matthew T. , Knapp Ashley A. , Babson Kimberly A. , Leen‐Feldner Ellen W. 
Published: June 2016

ABSTRACTCigarette smoking during adolescence is linked to a number of sleep disturbances and has been consistently linked to sleep onset latency among adults. However, little research has examined factors that may influence the relation between cigarette smoking level and sleep onset latency among adolescents. One factor that may be particularly important in this regard is anxiety sensitivity (AS). The current study examined whether cigarette smoking level interacted with AS in its association with sleep onset latency among 94 adolescent (Mage = 15.72) cigarette smokers. As hypothesized, AS interacted with smoking level to relate to sleep onset latency, even after controlling for age and gender. This relation was specific to sleep onset latency as opposed to other types of sleep disturbances, and that adolescents who smoked at higher levels tended to go to sleep later and wake up later than adolescents who smoked at relatively lower levels.
Clinical Issues‐July 2016
Authors: Burlingame Byron L. 
Published: June 2016

This MonthWearing ring dosimetersKey words: dosimeter, ring dosimeters, finger dosimeters.Reporting a retained surgical item (RSI)Key words: reportable event, retained surgical item, RSI, retained foreign object, counts.Definition of an implantKey words: implant, implant documentation.Determining whether RN first assistants (RNFAs) must maintain CNOR certification to practiceKey words: CNOR, CRNFA, RNFA, first assistant, RN first assistant.Definition of personal protective equipment (PPE)Key words: personal protective equipment, PPE, surgical attire, removing PPE.
APOE ε4 carriers may undergo synaptic damage conferring risk of Alzheimer's disease
Authors: Sun Xiaoyan , Dong Chuanhui , Levin Bonnie , Crocco Elizabeth , Loewenstein David , Zetterberg Henrik , Blennow Kaj , Wright Clinton B. ,   Alzheimer's Disease Neuroimaging Initiative
Published: June 2016

AbstractIntroductionPathogenesis of Alzheimer's disease (AD) in apolipoprotein E ε4 (APOE ε4) carriers remains unclear. We hypothesize that APOE isoforms have differential effects on synaptic function.MethodsWe compared levels of CSF neurogranin (Ng) between APOE ε4 carriers and noncarriers in 399 subjects with normal cognition, mild cognitive impairment (MCI), and AD. We examined associations between Ng levels and age, education, gender, CSF‐Aβ42, and tau protein.ResultsNeurogranin levels were significantly higher in APOE ε4 carriers compared to APOE ε4 noncarriers with MCI. Levels of Ng between the APOE ε4 carriers and APOE ε4 noncarriers with AD did not differ. Ng levels were correlated with MMSE and levels of tau and Aβ42.DiscussionSignificantly higher CSF Ng levels in APOE ε4 carriers with MCI may reflect synaptic injury underlying early cognitive impairment. Neurogranin may be an early biomarker of AD and important for disease diagnosis and timing of intervention in APOE ε4 carriers.
Association of sociodemographic and clinical factors with spirituality and hope for cure of ostomized people
Authors: Moreira Carmelita Naiara de Oliveira , Marques Camila Barbosa , Silva Marcial Alexandre Pereira da , Pinheiro Fernanda Augusta Marques , Salomé Geraldo Magela 
Published: June 2016

Abstract
Objective To evaluate the sociodemographic and clinical factors related to patients with intestinal stoma and correlate them to the health locus of control, spirituality and hope for a cure.
Method This study was conducted at the Polo of Ostomized Patients of the city of Pouso Alegre, Minas Gerais. Participants were 52 patients with intestinal stoma. The scale for Health Locus of Control, the Herth Hope Scale, and the Self-rating Scale for Spirituality were used for data collection.
Results The patients were aged up to 50 years, with the following means: Herth Hope Scale: 17.53; Self-rating Scale for Spirituality: 19.33. With regard to marital status, single people had a mean of 21.00 for the Herth Hope Scale. Retired ostomized patients had a mean of 20.53 for the Herth Hope Scale, of 10.38 for the Self-rating Scale for Spirituality, and of Scale for Health Locus of Control, of 18.79. The patients whose cause of making the stoma was neoplasia attained a mean of 19.43 for the Self-rating Scale for Spirituality. Regarding the character of the stoma, the mean for the Herth Hope Scale was 18.40. In the ostomized individuals who lived with the stoma for less than four years the means for the Herth Hope Scale, Self-rating Scale for Spirituality, and Scale for Health Locus of Control were 17.39, 20.35, and 23.09, respectively. Patients who did not participate of an association or support had means for the Herth Hope Scale, Self-rating Scale for Spirituality, and Scale for Health Locus of Control of 19.08, 17.25, and 20.63 respectively.
Conclusion Ostomized patients believe they can control their health and that those involved in their care and rehabilitation can contribute to their improvement.