bluuebunny/crossref_metadata_2025_split huggingface dataset:
Direct and iterative methods for interval parametric algebraic systems producing parametric solutions
Authors: Skalna Iwona , Hladík Milan 
Published: January 2019

SummaryThis paper deals with interval parametric linear systems with general dependencies. Motivated by the so‐called parameterized solution introduced by Kolev, we consider the enclosures of the solution set in a revised affine form. This form is advantageous to a classical interval solution because it enables us to obtain both outer and inner bounds for the parametric solution set and, thus, intervals containing the endpoints of the hull solution, among others. We propose two solution methods, a direct method called the generalized expansion method and an iterative method based on interval‐affine Krawczyk iterations. For the iterative method, we discuss its convergence and show the respective sufficient criterion. For both methods, we perform theoretical and numerical comparisons with some other approaches. The numerical experiments, including also interval parametric linear systems arising in practical problems of structural and electrical engineering, indicate the great usefulness of the proposed methodology and its superiority over most of the existing approaches to solving interval parametric linear systems.
Eigenvector sensitivity under general and structured perturbations of tridiagonal Toeplitz‐type matrices
Authors: Noschese Silvia , Reichel Lothar 
Published: January 2019

SummaryThe sensitivity of eigenvalues of structured matrices under general or structured perturbations of the matrix entries has been thoroughly studied in the literature. Error bounds are available, and the pseudospectrum can be computed to gain insight. Few investigations have focused on analyzing the sensitivity of eigenvectors under general or structured perturbations. This paper discusses this sensitivity for tridiagonal Toeplitz and Toeplitz‐type matrices.
A prehistoric case of developmental defects of the spine in a young adult female from the Atacama Desert
Authors: Arriaza Bernardo , Standen Vivien , Soto Leonardo , Aravena Natalia 
Published: January 2019

AbstractWe report the case of a female individual from an archaeological site from the Late Intermediate Period (ca. 1000–1400 AD) of the Azapa Valley in the far north of Chile. The spine presents several pathologies, including a triple hemivertebrae involving T7, T8, and T10 and the fusion of axis‐C3. We consider that these bone anomalies could be related to Klippel–Feil syndrome.
Efficient and Recyclable RuCl3 ⋅ 3H2O Catalyst Modified with Ionic Diphosphine for the Alkoxycarbonylation of Aryl Halides
Authors: Zhou Qing , Liu Lei , Guo Wen‐Di , Liang Wen‐Yu , Lu Yong , Liu Ye 
Published: January 2019

AbstractA series of ionic (mono‐/di‐)phosphines (L2, L4, and L6) with structural similarity and their corresponding neutral counterparts (L1, L3, and L5) were applied to modulate the catalytic performance of RuCl3 ⋅ 3H2O. With the involvement of the ionic diphosphine (L4), in which the two phosphino‐fragments were linked by butylene group, RuCl3 ⋅ 3H2O with advantages of low cost, robustness, and good availability was found to be an efficient and recyclable catalyst for the alkoxycarbonylation of aryl halides. The L4‐based RuCl3 ⋅ 3H2O system corresponded to the best conversion of PhI (96 %) along with 99 % selectivity to the target product of methyl benzoate as well as the good generality to alkoxycarbonylation of different aryl halides (ArX, X=I and Br) with alcohols MeOH, EtOH, i‐PrOH and n‐BuOH. The electronic and steric effects of the applied phosphines, which were analyzed by the 31P NMR for 1J31P‐77Se1J measurement and single‐crystal X‐ray diffraction, were carefully co‐related to the performance RuCl3 ⋅ 3H2O catalyst. In addition, the L4‐based RuCl3 ⋅ 3H2O system could be recycled successfully for at least eight runs in the ionic liquid [Bmim]PF6.
Identification and functional analysis of three new anthocyanin R2R3‐MYB genes in Petunia
Authors: Zhang Hechen , Koes Ronald , Shang Hongquan , Fu Zhenzhu , Wang Limin , Dong Xiaoyu , Zhang Jing , Passeri Valentina , Li Yanbang , Jiang Hui , Gao Jie , Li Yanmin , Wang Huijuan , Quattrocchio Francesca M. 
Published: January 2019

AbstractWe identified three novel members of the R2R3‐MYB clade of anthocyanin regulators in the genome of the purple flowering Petunia inflata S6 wild accession, and we called them ANTHOCYANIN SYNTHESIS REGULATOR (ASR). Two of these genes, ASR1 and ASR2, are inactivated by two different single base mutations in their coding sequence. All three of these genes are absent in the white flowering species P. axillaris N and P. parodii, in the red flowering P. exserta, and in several Petunia hybrida lines, including R27 and W115. P. violacea and other P. hybrida lines (M1, V30, and W59) instead harbor functional copies of the ASR genes. Comparative, functional and phylogenic analysis of anthocyanin R2R3‐MYB genes strongly suggest that the ASR genes cluster is a duplication of the genomic fragment containing the other three R2R3‐MYB genes with roles in pigmentation that were previously defined, the ANTHOCYANIN4‐DEEP PURPLE‐PURPLE HAZE (AN4‐DPL‐PHZ) cluster. An investigation of the genomic fragments containing anthocyanin MYBs in different Petunia accessions reveals that massive rearrangements have taken place, resulting in large differences in the regions surrounding these genes, even in closely related species. Yeast two‐hybrid assays showed that the ASR proteins can participate in the WMBW (WRKY, MYB, B‐HLH, and WDR) anthocyanin regulatory complex by interacting with the transcription factors AN1 and AN11. All three ASRs can induce anthocyanin synthesis when ectopically expressed in P. hybrida lines, but ASR1 appeared to be the most effective. The expression patterns of ASR1 and ASR2 cover several different petunia tissues with higher expression at early stages of bud development. In contrast, ASR3 is only weakly expressed in the stigma, ovary, and anther filaments. The characterization of these novel ASR MYB genes completes the picture of the MYB members of the petunia anthocyanin regulatory MBW complex and suggests possible mechanisms of the diversification of pigmentation patterns during plant evolution.
Determining thermo‐mechanical properties of polydimethylsiloxanes from their strain‐induced spectral fingerprints
Authors: Anwer Ahmed Abdul Wadood , Naguib Hani E. 
Published: January 2019

ABSTRACTAdaptive properties and complex shapes of modern day soft matter components create a challenge for materials applications where mechanical properties of intricate fabricated components cannot be determined from conventional invasive and destructive mechanical tests. In particular, challenges arising from variable mechanical properties of polydimethylsiloxanes (PDMSs) constantly attract wide‐scale attention in the fields of material sciences, biological systems, and microfluidics. Herein, a noninvasive and nondestructive strain‐induced infrared spectroscopic method (S‐FTIR) is developed. S‐FTIR is a method that maps thermo‐mechanical response of PDMS to its strain‐induced spectral fingerprint. From the results of this study, strong correlations of up to 95% between spectral fingerprint of PDMS and its corresponding nonlinear thermo‐mechanical response is seen. Given the nature of these results, it is expected that S‐FTIR will provide an interesting new analytical approach to understand soft materials and allow for the characterization of micro and nanoscale devices composed of these polymeric materials as well. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 359–367
A practical method for efficient and optimal production of Seleno‐methionine‐labeled recombinant protein complexes in the insect cells
Authors: Wenzel Sabine , Imasaki Tsuyoshi , Takagi Yuichiro 
Published: January 2019

AbstractThe use of Seleno‐methionine (SeMet) incorporated protein crystals for single or multi‐wavelength anomalous diffraction (SAD or MAD) to facilitate phasing has become almost synonymous with modern X‐ray crystallography. The anomalous signals from SeMets can be used for phasing as well as sequence markers for subsequent model building. The production of large quantities of SeMet incorporated recombinant proteins is relatively straightforward when expressed in Escherichia coli. In contrast, production of SeMet substituted recombinant proteins expressed in the insect cells is not as robust due to the toxicity of SeMet in eukaryotic systems. Previous protocols for SeMet‐incorporation in the insect cells are laborious, and more suited for secreted proteins. In addition, these protocols have generally not addressed the SeMet toxicity issue, and typically result in low recovery of the labeled proteins. Here we report that SeMet toxicity can be circumvented by fully infecting insect cells with baculovirus. Quantitatively controlling infection levels using our Titer Estimation of Quality Control (TEQC) method allow for the incorporation of substantial amounts of SeMet, resulting in an efficient and optimal production of labeled recombinant protein complexes. With the method described here, we were able to consistently reach incorporation levels of about 75% and protein yield of 60–90% compared with native protein expression.
Characterizing molecular flexibility by combining least root mean square deviation measures
Authors: Cazals Frédéric , Tetley Romain 
Published: January 2019

AbstractThe root mean square deviation (RMSD) and the least RMSD are two widely used similarity measures in structural bioinformatics. Yet, they stem from global comparisons, possibly obliterating locally conserved motifs. We correct these limitations with the so‐called combined RMSD, which mixes independent lRMSD measures, each computed with its own rigid motion. The combined RMSD is relevant in two main scenarios, namely to compare (quaternary) structures based on motifs defined from the sequence (domains and SSE) and to compare structures based on structural motifs yielded by local structural alignment methods. We illustrate the benefits of combined RMSD over the usual RMSD on three problems, namely (a) the assignment of quaternary structures for hemoglobin (scenario #1), (b) the calculation of structural phylogenies (case study: class II fusion proteins; scenario #1), and (c) the analysis of conformational changes based on combined RMSD of rigid structural motifs (case study: one class II fusion protein; scenario #2). Based on these illustrations, we argue that the combined RMSD is a tool of choice to perform positive and negative discrimination of degree of freedom, with applications to the design of move sets and collective coordinates. Executables to compute combined RMSD are available within the Structural Bioinformatics Library (http://sbl.inria.fr).
Valeriana jatamansi: An herbaceous plant with multiple medicinal uses
Authors: Jugran Arun K. , Rawat Sandeep , Bhatt Indra D. , Rawal Ranbeer S. 
Published: January 2019

Valeriana jatamansi Jones (Family: Caprifoliaceae), a high value medicinal plant, was distributed in many countries of Asia. The species possesses important valepotriates and is a good source of flavones or flavone glycosides, lignans, sesquiterpenoids or sesquiterpenoid glycoside, bakkenolide type sesquiterpenoids, phenolic compounds, terpinoids, etc. The use of the species in traditional and modern medicines is well known. For instance, V. jatamansi is very important for its insect repelling and antihelmethic properties. Similarly, sedative, neurotoxic, cytotoxic, antidepressant, antioxidant, and antimicrobial activities of the species in various ailments in the indigenous system of medicine, particularly in Asia, are reported. This review focuses on the detailed phytochemical composition, medicinal uses, and pharmacological properties of V. jatamansi along with analysis of botanical errors in published literature and reproducibility of the biomedical researches on this multipurpose herbaceous species.
Global output feedback control for a class of nonlinear systems with unknown homogenous growth condition
Authors: Zhai Junyong , Karimi Hamid Reza 
Published: January 2019

SummaryThis paper investigates the problem of global control for a class of nonlinear systems via output feedback. The system nonlinearities satisfy the homogenous growth condition with unknown growth rate. First, a homogenous observer is constructed for estimating the system state. Then, two novel dynamic gains are presented to deal with the unknown growth rate. Subsequently, by adding a power integrator technique, a dynamic output feedback controller is designed to guarantee that all the signals of the closed‐loop system are bounded and the system states globally converge to origin. Finally, an example is provided to illustrate the validity of the proposed control scheme.
Exploration and assessment of the motivators of social sustainability in healthcare supply chains: Multistake holder's perspective
Authors: Hussain Matloub , Khan Mehmood , Ajmal Mian 
Published: January 2019

AbstractThe purpose of this paper is to propose a framework for the identification, categorization, and prioritization of social sustainability motivators across four main stakeholders of healthcare supply chains. A survey tool is initially used for the identification of motivators of social sustainability that are relevant to the healthcare supply chain. The exploration phase identified 34 motivators that were grouped to introduce a hierarchal framework. Finally, an analytical hierarchy process (AHP) is utilized to prioritize the criteria and subcriteria of motivators of social sustainability.The results of this study identified five main categories (Organizational Practice, Media and Reputation, Excellence and Awards, Technology and Innovation, and Attitude) and 34 subcategories. The AHP results assigned the highest priority to Media and Reputation and Organizational Practice. The framework developed in this study provides healthcare professionals with a structured approach that will be helpful in the acceptance of social sustainability across the chain. The proposed approach can be adapted to the healthcare industry in different contexts, and the study findings can provide insights and guidelines for the effective adoption of sustainability, in general, and social sustainability across different supply chains, in particular.Most of the previous research did not explore the various motivators across healthcare supply chains in terms of relevance and priority. There is also a lack of conceptual and structured approaches for identifying and prioritizing the motivators of social sustainability.
The Microwave‐Assisted Hydrothermal Synthesis of CoV2O6 and Co3V2O8 with Morphology Tuning by pH Adjustments for Supercapacitor Applications
Authors: Teng Yifei , Li Yingdi , Yu Deyang , Meng Ya'nan , Wu Yunpeng , Zhao Xudong , Liu Xiaoyang 
Published: January 2019

AbstractVanadium‐based metal oxides have attracted widespread attention as a promising candidate for electrode materials owing to the novel morphologies and the wide range of practical applications. In this work, the microwave‐assisted hydrothermal synthesis method was used for the first time to synthesize CoV2O6 micron blocks and Co3V2O8 nanoparticles. Briefly, heating the solution to 100 °C and adjusting the pH can result in desired micro blocks and nanoparticles within 10 min. After systematic characterization of material structures and morphologies, the resulted two materials were further fabricated to electrodes, and thoroughly characterized their electrochemical performances. The test results showed that both the two cobalt vanadates had a great potential as supercapacitor electrode materials. Moreover, by adjusting the pH of the solution, the type and morphology of the synthesized product could be precisely controlled, which could largely affect the electrochemical properties of the materials.
High‐Efficient Visible‐Light Response and Photoelectrochemical Performance of Nanotube‐Sheet Composite Fabricated by Ultrathin Porphyrin Nanosheet and TiO2 Nanotubes
Authors: Zhao Fenfen , Ke Weiquan , Peng Zhiqin , Wan Junmin , Hu Zhiwen 
Published: January 2019

AbstractHere we report a high‐efficiency visible‐light responsive tube‐sheet nanocomposite (Zn‐TCPP NS/TNTs) fabricated by an improved hydrothermal method. The characterization results give deep insights into the structures and interaction between the TNTs and Zn‐TCPP NS. The composites consisting of 5% Zn‐TCPP NS show a marvelous photocatalytic performance for the initial high concentration MB solution (30 mg/l) under visible light, which was about 2 times more than that of the pure TNTs. The electrochemical impedance spectroscopy of the 5% Zn‐TCPP NS/TNTs composites are obviously lower than that of the 1% Zn‐TCPP NS/TNTs composites and pure TNTs, and the photocurrent of the 5% Zn‐TCPP NS/TNTs composites is 3.8 times than the pure TNTs. The reason is that,on one hand, the TNTs can be activated by sun light, and generate photoexcited electron‐hole pairs, which can react with H2O and O2 to produce ⋅OH and ⋅O2− radicals, resulting in degradation of waste water. On the other hand, the reaction scheme has a little changed when the TNTs modified by Zn‐TCPP NS.
Mn(OAc)3‐Mediated Regioselective C‐H Phosphonylation of Indolizines with H‐Phosphonates
Authors: Yu Yue , Yue Zhongbao , Ding Liu‐gang , Zhou Yong , Cao Hua 
Published: January 2019

AbstractA range of indolizines and H‐phosphonates smoothly underwent Mn(OAc)3‐mediated C‐H phosphonylation procedure to afford the phosphorylated indolizines in good to excellent yields with high regioselectivities. Mechanistic studies have been conducted to clarify the radical pathway.
CPMD Investigations of the Improved Energetic Performance for Lithium Amidoborane doped RDX
Authors: Wang Kun , Wu Pan Pan , Zhang Tian Tian , Liu Dian Kai , Dai Chao Hua , Zhang Jian Guo , Yu Xue Bin 
Published: January 2019

AbstractWe always pursue improved energetic performances such as high formation enthalpies, moderate sensitivities and stabilities for all energetic compounds. 1,3,5‐trinitroperhydro‐1,3,5‐triazine (RDX) is a very classic high‐energy explosive which has been applied in both military and civilian fields broadly, whose combustion properties can be enhanced by introducing hydrogen‐storage compounds such as Lithium amidoborane (LAB). Here we apply CPMD method to study how LAB affects a traditional nitramine explosive (RDX) in a simulated detonation. The theoretical results show there are abundant exothermic reactions caused by the introduction of LAB, which suggests hydrogen‐storage material is a prospective assistant ingredient for composite explosives.
Dynamically Switchable Multicolor Electrochromic Films
Authors: Li Na , Wei Pingping , Yu Linan , Ji Junyi , Zhao Jiupeng , Gao Chuanbo , Li Yao , Yin Yadong 
Published: January 2019

AbstractThe dynamic optical switch of plasmonic nanostructures is highly desirable due to its promising applications in many smart optical devices. To address the challenges in the reversibility and transmittance contrast of the plasmonic electrochromic devices, here, a strategy is reported to fabricate color switchable electrochromic films through electro‐responsive dissolution and deposition of Ag on predefined hollow shells of Au/Ag alloy. Using the hollow Au/Ag alloy nanostructures as stable seeds for site‐specific deposition of Ag, elimination of the random self‐nucleation events is enabled and optimal reversibility in color switching is allowed. The hollow structure further enables excellent transmittance contrast between the bleached and colored states. With its additional advantages such as the convenience for preparation, high sensitivity, and field‐tunable optical property, it is believed that this new electrochromic film represents a unique platform for designing novel smart optical devices.
Seismic response of isolated bridge with high damping rubber bearings
Authors: Okui Yoshiaki , Nakamura Keisuke , Sato Takashi , Imai Takashi 
Published: January 2019

AbstractKurita‐Albrecht Best Scientific Paper Award – Steel at 12th Japan German Bridge Symposium, September 2018 in MunichThe temperature dependence of the mechanical behaviour of high damping rubber bearings (HDRBs) was investigated by way of cyclic loading tests at different ambient temperatures. As the number of loading cycles increased, so the difference between the ambient and internal temperatures of HDRBs increased due to self‐heating, especially in subzero environments. It was found that the mechanical behaviour of HDRBs is governed by their internal temperatures, not by the ambient temperatures. A simple method for estimating the internal temperature is proposed. Previous cyclic loading tests results at different ambient temperatures have been re‐examined based on the internal temperatures obtained from the proposed internal temperature estimation method. The temperature dependence of HDRBs is summarized in terms of the internal temperatures. The conventional temperature dependence based on the ambient temperature may underestimate the seismic response of bridges with HDRBs, especially for subzero environments.
Developmental cascades of internalising symptoms, externalising problems and cognitive ability from early childhood to middle adolescence
Authors: Flouri Eirini , Papachristou Efstathios , Midouhas Emily , Ploubidis George B. , Lewis Glyn , Joshi Heather 
Published: January 2019

AbstractBackground:Cognitive ability and problem behaviour (externalising and internalising problems) are variable and inter-related in children. However, it is not known if they mutually influence one another, if difficulties in one cause difficulties in the other, or if they are related only because they share causes.Methods:Random-intercept cross-lagged models adjusted for confounding were fitted to explore this in 17,318 (51% male) children of the UK’s Millennium Cohort Study at ages 3, 5, 7, 11 and 14 years. Externalising and internalising problems were assessed using the parent-reported Strengths and Difficulties Questionnaire. Cognitive ability was measured using standardised scores of age-appropriate validated cognitive ability assessments. Where multiple cognitive assessments were available a single score was derived using principal components analysis.Results:There was much evidence for cross-domain longitudinal effects in childhood, especially for cognitive ability (on both internalising and externalising problems and in both males and females) and externalising problems (on internalising problems in both genders and cognitive ability in males). Bidirectional effects were childhood-limited, gender-specific and less consistent. The consistent bidirectional associations were, in males, between externalising problems and cognitive ability, and, in females, between externalising and internalising problems (although the effects of internalising problems were weak). In adolescence, only externalising problems had cross-domain effects such that, in both genders, they were associated with lower cognitive ability in subsequent measurements and increased levels of internalising problems.Conclusions:In either childhood or adolescence, reducing behavioural problems could have both emotional and cognitive benefits. In childhood, improving cognitive skills could reduce both emotional and behavioural problems.