bluuebunny/crossref_metadata_2025 huggingface dataset:
The Stiffness-Threshold Conflict in Polymer Networks and a Resolution
Authors: Zhou Yifan , Zhang Wenlei , Hu Jian , Tang Jingda , Jin Chenyu , Suo Zhigang , Lu Tongqing
Published: September 2019

Stiffness and fatigue threshold are important material parameters in load-carrying applications. However, it is impossible to achieve both high stiffness and high threshold for single-network elastomers and single-network hydrogels. As the polymer chain length increases, the stiffness reduces, but the threshold increases. Here, we show that this stiffness-threshold conflict is resolved in double-network hydrogels, where the stiffness depends on the short-chain network, but the threshold depends on the long-chain network. Experimental data in the literature have shown that the stiffness of the hydrogels is inversely proportional to chain length of the short-chain network. In this paper we measure the threshold of PAAm-PAMPS hydrogels with five different chain lengths of the long-chain network. We find that the threshold is proportional to 1/2 power of the chain length of the long-chain network. The resolution of the conflict enables the design of elastomers and hydrogels to achieve both high stiffness and high threshold.
Faraday induction from point-charge fields
Authors: Redinz José Arnaldo
Published: September 2019

Interpreting Faraday's law of induction has been a challenge for students, because this law involves abstract and sophisticated concepts such as the magnetic flux, given by a surface integral, and the electromotive force, given by a line integral. Besides that, Faraday's law is not clear with respect to the sources of the different fields of force, electric and magnetic, involved simultaneously in the phenomenon of induction. We discuss Faraday's electromagnetic induction through the magnetic and electric fields of point-charges in a quasistatic regime. From this perspective, we show that the results of Faraday's experiments that led to the discovery of electromagnetic induction can be understood in terms of the electric acceleration and velocity fields of point charges.
Zero range potential approximation in quantum scattering problems
Authors: Popovicz Seidel Eliton , Arretche Felipe
Published: September 2019

This article presents the Zero Range Potential (ZRP) approximation as an alternative to treat quantum scattering problems. The main focus is to provide an undergraduate-level derivation of the ZRP boundary condition that describes the interaction between an electron and a potential, using the spherical-potential-well analytical solutions. The validity of the approximation is discussed qualitatively and quantitatively. Finally, the ZRP approximation is applied to the scattering of an electron by an atom, comparing the results obtained with modern experimental measurements.
Learning to read recycles visual cortical networks without destruction
Authors: Hervais-Adelman Alexis , Kumar Uttam , Mishra Ramesh K. , Tripathi Viveka N. , Guleria Anupam , Singh Jay P. , Eisner Frank , Huettig Falk
Published: September 2019

Reading co-opts existing cortical visual feature representation without destruction.
BAP1 regulates epigenetic switch from pluripotency to differentiation in developmental lineages giving rise to BAP1-mutant cancers
Authors: Kuznetsov Jeffim N. , Aguero Tristan H. , Owens Dawn A. , Kurtenbach Stefan , Field Matthew G. , Durante Michael A. , Rodriguez Daniel A. , King Mary Lou , Harbour J. William
Published: September 2019

BAP1 regulates developmental switch in lineages commonly affected by BAP1-mutant cancers.
SLC36A1-mTORC1 signaling drives acquired resistance to CDK4/6 inhibitors
Authors: Yoshida Akihiro , Bu Yiwen , Qie Shuo , Wrangle John , Camp E. Ramsay , Hazard E. Starr , Hardiman Gary , de Leeuw Renée , Knudsen Karen E. , Diehl J. Alan
Published: September 2019

We identified unique molecular mechanisms of resistance to CDK4/6 inhibitors, an area of intense biomedical investigation.
Immune correlates of the Thai RV144 HIV vaccine regimen in South Africa
Authors: Gray Glenda E. , Huang Ying , Grunenberg Nicole , Laher Fatima , Roux Surita , Andersen-Nissen Erica , De Rosa Stephen C. , Flach Britta , Randhawa April K. , Jensen Ryan , Swann Edith M. , Bekker Linda-Gail , Innes Craig , Lazarus Erica , Morris Lynn , Mkhize Nonhlanhla N. , Ferrari Guido , Montefiori David C. , Shen Xiaoying , Sawant Sheetal , Yates Nicole , Hural John , Isaacs Abby , Phogat Sanjay , DiazGranados Carlos A. , Lee Carter , Sinangil Faruk , Michael Nelson L. , Robb Merlin L. , Kublin James G. , Gilbert Peter B. , McElrath M. Juliana , Tomaras Georgia D. , Corey Lawrence
Published: September 2019

In South Africans, the RV144 HIV vaccine regimen elicited robust immune responses that have been associated with vaccine efficacy.
Infections with
Arsenophonus
Facultative Endosymbionts Alter Performance of Aphids (Aphis gossypii) on an Amino-Acid-Deficient Diet
Authors: Tian Pan-Pan , Chang Chun-Yan , Miao Ning-Hui , Li Meng-Yue , Liu Xiang-Dong
Published: September 2019

The facultative endosymbiont
Arsenophonus
plays an important role in regulating reproduction through son killing, enemy resistance, and the dietary breadth of its insect hosts. In this study, we found
Arsenophonus
could alter aphid performance on the amino-acid-deficient diets.
Arsenophonus
infection increased aphid requirements for the amino acid Phe, but decreased requirements for the Leu. Cotton and cucumber leaves contained drastically different titers of free amino acids Phe and Leu, and aphids living on these two plants were infected with different incidences of
Arsenophonus
. We hypothesize that host specialization or the host plant range of aphids may be mediated by
Arsenophonus
.
Loci Encoding Compounds Potentially Active against Drug-Resistant Pathogens amidst a Decreasing Pool of Novel Antibiotics
Authors: Basalla Joseph , Chatterjee Payel , Burgess Elizabeth , Khan Mahnur , Verbrugge Emily , Wiegmann Daniel D. , LiPuma John J. , Wildschutte Hans
Published: September 2019

Carbapenem-resistant
P. aeruginosa
is difficult to treat and has been deemed by the World Health Organization as a priority one pathogen for which antibiotics are most urgently needed. Although metagenomics and bioinformatic studies suggest that natural bacteria remain a source of novel compounds, the identification of genes and their products specific to activity against MDR pathogens remains problematic. Here, we examine water-derived pseudomonads and identify gene clusters whose compounds inhibit CF-derived MDR pathogens, including carbapenem-resistant
P. aeruginosa
.
Expression of the Nontypeable Haemophilus influenzae Type IV Pilus Is Stimulated by Coculture with Host Respiratory Tract Epithelial Cells
Authors: Mokrzan Elaine M. , Johnson Taylor J. , Bakaletz Lauren O.
Published: September 2019

The type IV pilus (Tfp) of nontypeable
Haemophilus influenzae
(NTHI) mediates adherence, colonization, motility, and biofilm formation, and the major protein subunit, PilA, is a promising vaccine candidate. Thus, it is crucial to understand how Tfp expression is regulated within the microenvironments of the human nasopharynx, which NTHI colonizes asymptomatically, and the more distal regions of the respiratory tract where NTHI-induced diseases occur.
A Universal Stress Protein That Controls Bacterial Stress Survival in Micrococcus luteus
Authors: Havis Spencer , Bodunrin Abiodun , Rangel Jonathan , Zimmerer Rene , Murphy Jesse , Storey Jacob D. , Duong Thinh D. , Mistretta Brandon , Gunaratne Preethi , Widger William R. , Bark Steven J.
Published: September 2019

Bacteria tolerate severe external stresses, including antibiotics, through a nonreplicative persistent (NRP) survival state, yet the proteins regulating this survival state are largely unknown. We show a specific universal stress protein (UspA616) controls the NRP state in
Micrococcus luteus
. Usps are widely conserved across bacteria, but their biological function(s) has remained elusive. UspA616 inactivation renders
M. luteus
susceptible to stress: bacteria die instead of adapting through the NRP state. UspA616 regulates malate synthase and isocitrate lyase, glyoxylate pathway enzymes important for chronic
Mycobacterium tuberculosis
infection. These data show that UspA616 regulates NRP stress survival in
M. luteus
and suggest a function for homologous proteins in other bacteria. Importantly, inhibitors of UspA616 and homologs may render NRP bacteria more susceptible to stresses, including current antibiotics.
Whole-Genome Sequence of Salmonella enterica subsp. diarizonae Serovar 61:k:1,5,(7) Strain 1569 (14PM0011), Isolated from German Sheep
Authors: Busch Anne , Tomaso Herbert , Methner Ulrich
Published: September 2019

Here, we report the draft genome sequence of
Salmonella enterica
subsp.
diarizonae
serovar 61:k:1,5,(7) strain 1569, alternatively named 14PM0011, which is a common serovar in German sheep that is unrepresented in the databases and considered and described as being host adapted with low virulence.
Complete Genome Sequence of
Lysinibacillus
sp. Strain SGAir0095, Isolated from Tropical Air Samples Collected in Singapore
Authors: Wong Anthony , Junqueira Ana Carolina M. , Uchida Akira , Purbojati Rikky W. , Houghton James N. I. , Chénard Caroline , Clare Megan E. , Kushwaha Kavita K. , Putra Alexander , Gaultier Nicolas E. , Premkrishnan Balakrishnan N. V. , Vettath Vineeth Kodengil , Heinle Cassie E. , Drautz-Moses Daniela I. , Schuster Stephan C.
Published: September 2019

Lysinibacillus
sp. strain SGAir0095 was isolated from tropical air samples collected in Singapore, and its complete genome was sequenced with a hybrid strategy using single-molecule real-time sequencing and short reads. The genome consists of one chromosome of 4.14 Mbp and encompasses 3,885 protein-coding genes, 39 rRNAs, and 101 tRNAs.
Draft Genome Sequence of Lactobacillus crispatus Strain V4, Isolated from a Vaginal Swab from a Young Healthy Nonmenopausal Woman
Authors: Clabaut Maximilien , Boukerb Amine M. , Racine Pierre-Jean , Pichon Chantal , Kremser Coralie , Queiroz Aïna , Karsybayeva Madina , Redziniak Gérard , Chevalier Sylvie , Feuilloley Marc G. J.
Published: September 2019

Lactobacillus crispatus
strain V4 was isolated from a vaginal swab from a healthy nonmenopausal 35-year-old French woman. We report here its draft genome sequence of 2,091,889 bp, with an average G+C content of 37.02%.
Complete Genome Sequences of Four Salmonella enterica Strains Associated with Pistachios Assembled Using a Combination of Short- and Long-Read Sequencing
Authors: Haendiges Julie , Gonzalez-Escalona Narjol , Miller Jesse D. , Hoffmann Maria
Published: September 2019

Here, we report the genomes of two
Salmonella enterica
subsp.
enterica
serovar Montevideo strains (CFSAN005645 and FCC0123) and two
Salmonella enterica
subsp.
enterica
serovar Senftenberg strains (FSW0104 and CFSAN087304) isolated from pistachios. The genomes were closed using a hybrid assembly method using short- and long-read sequencing technology.
Foot-and-Mouth Disease Virus Serotype A Genome Sequence from Kenya in 2016
Authors: Palinski Rachel M. , Sangula Abraham , Gakuya Francis , Bertram Miranda R. , Pauszek Steven J. , Hartwig Ethan J. , Smoliga George R. , Obanda Vincent , Omondi George , VanderWaal Kimberly , Arzt Jonathan
Published: September 2019

We report the genome sequence of a foot-and-mouth disease virus (FMDV) serotype A topotype Africa isolate collected from bovine vesicular epithelium from Kenya in 2016. This novel sequence updates the knowledge of FMDV diversity in eastern Africa and has important implications for FMDV epidemiology and molecular analyses.
Complete Genome Sequence of Escherichia coli Myophage Mansfield
Authors: D’Souza Genevieve M. , Klotz Kathryn , Moreland Russell , Liu Mei , Ramsey Jolene
Published: September 2019

Mansfield is a PB1-like
Escherichia
bacteriophage with a 68,120-bp genome and a predicted 3,673-bp direct terminal repeat. This myophage encodes 105 proteins, for which 32 functions were predicted.
Medical devices that look like medicines: safety and regulatory concerns for children in Europe
Authors: Huijghebaert Suzy , De Bruyne Pauline , Allegaert Karel , Vande Velde Saskia , De Bruyne Ruth , Van Biervliet Stephanie , Van Winckel Myriam
Published: September 2019

Introduction

Medical devices (MedDevs) and medicines are assessed (and monitored) differently before and after launch. There are products for repeated oral ingestion that are marketed in the European Union as MedDevs.

Objectives and methods

To illustrate the consequences of these differences in assessment, we compared the leaflet information of three MedDevs with the standards for medicines and with published evidence at launch. As examples, gelatin tannate (GT), its combination with tyndalised probiotics (TP) (GTTP) for diarrhoea and a gel containing hyaluronic acid (HA)/chondroitin sulfate (CS)/poloxamer (Pol407) (HACSPol) for gastro-oesophageal reflux disease were examined.

Results

Applying standards for medicines, product composition is insufficiently defined in the MedDev leaflet (eg, plant origin, polymerisation grade, dose and ratio of the relevant constituents). As no age limit is mentioned in the leaflets, all 3 products allow use in children from birth onwards, although published clinical documentation in children was poor (GT) or lacking (GTTP and HACSPol). MedDev leaflets do not mention adverse events (AEs), while literature search suggests safety concerns such as tannic acid (TA) cytotoxicity, potentially more diarrhoea/AEs with TP, use of doses higher than established safe (TA and HA) and lack of chronic toxicity studies for oral Pol407. None refers to interactions with medicines, although some ingredients may affect medicine absorption.

Conclusion

Although these MedDevs require repeated oral intake as do medicines, their assessment and monitoring differ significantly from the standards for medicines. Compared with medicines, MedDevs for repeated oral use are poorly labelled and rely on very limited clinical information at market release.
Combination of high-resolution cone beam computed tomography and metal artefact reduction software: a new image fusion technique for evaluating intracranial stent apposition after aneurysm treatment
Authors: Yuki Ichiro , Ishibashi Toshihiro , Dahmani Chihebeddine , Kato Naoki , Ikemura Ayako , Abe Yukiko , Otani Katharina , Kodama Tomonobu , Kan Issei , Nishimura Kengo , Murayama Yuichi
Published: September 2019

We introduce a new imaging technique to improve visualisation of stent apposition after endovascular treatment of brain aneurysms employing high-resolution cone beam CT and three-dimensional digital subtraction angiography. After performing a stent-assisted coil embolisation of brain aneurysm, the image datasets were processed with a metal artefact reduction software followed by the automated image fusion programmes. Two patients who underwent aneurysm coiling using a Neuroform stent were evaluated. The reconstructed 3D images showed a detailed structure of the stent struts and identified malappositions of the deployed stents. Case 1 showed good apposition on the outer curvature side of the carotid siphon, while the inner curvature side showed prominent malapposition. Case 2, with multiple aneurysms, showed good apposition on both outer and inner curvature sides, although inward prolapse of the struts was observed. This new imaging technique may help evaluate stent apposition after the endovascular aneurysm treatment.
Maternal and neonatal outcomes in women with history of coronary artery disease
Authors: Cauldwell Matthew , Steer Philip J , von Klemperer Katherine , Kaler Mandeep , Grixti Sarah , Hale Joanna , O'Heney Josie , Warriner David , Curtis Stephanie , Mohan Aarthi R , Dockree Samuel , Mackillop Lucy , Head Catherine E G , Sterrenberg Monique , Wallace Suzanne , Freeman Leisa J , Patridge Gemma , Baalman Jelle H , McAuliffe Fionnuala M , Simpson Margaret , Walker Niki , Girling Joanna , Siddiqui Farah , Bolger Aidan P , Bredaki Foteini , Walker Fiona , Vause Sarah , Gatzoulis Michael A , Johnson Mark R , Roberts Anna
Published: September 2019

Background

Pregnancy outcomes in women with pre-existing coronary artery disease (CAD) are poorly described. There is a paucity of data therefore on which to base clinical management to counsel women, with regard to both maternal and neonatal outcomes.

Method

We conducted a retrospective multicentre study of women with established CAD delivering at 16 UK specialised cardiac obstetric clinics. We included pregnancies of 24 weeks’ gestation or more, delivered between January 1998 and October 2018. Data were collected on maternal cardiovascular, obstetric and neonatal events.

Results

79 women who had 92 pregnancies (94 babies including two sets of twins) were identified. 35.9% had body mass index >30% and 24.3% were current smokers. 18/79 (22.8%) had prior diabetes, 27/79 (34.2%) had dyslipidaemia and 21/79 (26.2%) had hypertension. The underlying CAD was due to atherosclerosis in 52/79 (65.8%), spontaneous coronary artery dissection (SCAD) in 11/79 (13.9%), coronary artery spasm in 7/79 (8.9%) and thrombus in 9/79 (11.4%).

There were six adverse cardiac events (6.6% event rate), one non-ST elevation myocardial infarction at 23 weeks’ gestation, two SCAD recurrences (one at 26 weeks’ gestation and one at 9 weeks’ postpartum), one symptomatic deterioration in left ventricular function and two women with worsening angina. 14% of women developed pre-eclampsia, 25% delivered preterm and 25% of infants were born small for gestational age.

Conclusion

Women with established CAD have relatively low rates of adverse cardiac events in pregnancy. Rates of adverse obstetric and neonatal events are greater, highlighting the importance of multidisciplinary care.
Cyclic coverings of virtual link diagrams
Authors: Kamada Naoko
Published: September 2019

A virtual link diagram is called mod [Formula: see text] almost classical if it admits an Alexander numbering valued in integers modulo [Formula: see text], and a virtual link is called mod [Formula: see text] almost classical if it has a mod [Formula: see text] almost classical diagram as a representative. In this paper, we introduce a method of constructing a mod [Formula: see text] almost classical virtual link diagram from a given virtual link diagram, which we call an [Formula: see text]-fold cyclic covering diagram. The main result is that [Formula: see text]-fold cyclic covering diagrams obtained from two equivalent virtual link diagrams are equivalent. Thus, we have a well-defined map from the set of virtual links to the set of mod [Formula: see text] almost classical virtual links. Some applications are also given.
Embryonic Iridium nanoclusters (n=3–13): A molecular dynamics computer simulation
Authors: El-bayyari Zuheir , Hamad Bothina
Published: September 2019

The determination of the physical and chemical properties of small nanoparticles plays a fundamental role in homogeneous and heterogeneous catalysis since a large number of the surface atoms of these nanoparticles can be exposed to chemical reactions, as well as in chemisorption, solid state physics, laser physics, crystal growth, epitaxy and surface science in general as most recent experimental and theoretical investigations have been disclosed. An empirical many-body Potential Energy Function (PEF) incorporating two-plus three-body atomistic potential derived by fitting experimental data pertaining to bulk Iridium has been applied to study the structural stability and energetics of Iridium nanoparticles of Irn([Formula: see text]–13). A constant temperature Molecular Dynamics (MD) technique is employed in the simulations. It is found that the energetically most stable structures of Iridium nanoparticles are in three-dimensional distorted compact forms close to symmetric geometries with the MD technique. The theoretical predictions are compared to the available theoretical and experimental literature data for binding energies, bond lengths and the most stable nanocluster geometry.
A vortex identification method based on strain and enstrophy production invariants
Authors: Kareem Waleed Abdel
Published: September 2019

A new vortex identification method is proposed for extracting vortical structures from homogeneous isotropic turbulence. The method is compared with other identification schemes such as the high rotational method ([Formula: see text]), the vorticity magnitude method ([Formula: see text]), the negative eigenvalue method ([Formula: see text]) and the normalized vorticity method ([Formula: see text]). A new normalization method based on the probability distribution function (PDF) of the identification invariants is also introduced. In addition, a modification for the discriminant criterion known as the [Formula: see text] method is carried out and it is denoted as the modified delta method ([Formula: see text]). The velocity of the isotropic turbulent field is simulated using the lattice Boltzmann method with resolution [Formula: see text]. The new identification method depends on the higher-orders of the invariants of the velocity gradient tensor as well as the strain rate and the enstrophy production terms. The elongated tube-like vortices are extracted successfully using the new method and several features of the vortices are demonstrated and compared with the vortical structures that are extracted using the [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] identification methods. The recommended normalization method enabled the justification of the visualization threshold value to be within the order of unity and the threshold value [Formula: see text] is used in all identification methods. A remarkably similar geometrical worm-like vortices are extracted and a high similarity between the identification methods is observed and statistically studied.
Human-Vehicle Collision Detection Algorithm Based on Image Processing
Authors: Qu Huiyan , Li Wenhui , Zhao Wei
Published: September 2019

In recent years, with the growth of China’s economy and the development of the automobile manufacturing industry, the number of various vehicles has continuously increased, and the incidence of traffic accidents has also increased. Especially in traffic blind areas, right-turning areas of vehicles, etc., traffic accidents such as vehicle collisions are extremely easy to occur, which poses a serious threat to people’s lives and property, and is extremely harmful. Therefore, related research on collision detection of people and vehicles has been traffic-safe and has received extensive attention from field researchers. At present, the research on human-vehicle collision detection is to detect human-vehicle collision accidents by tracking the track of vehicles and pedestrians, but there are problems such as poor tracking effect, low accuracy of collision discrimination and complex algorithms. Aiming at these problems, this paper studies the human-vehicle collision detection algorithm based on image processing. Through the image processing of traffic monitoring video, the vehicle and pedestrian contour information is extracted. Based on this, a mathematical model for collision detection is constructed to realize human-vehicle collision detection. The results show that the proposed method can effectively distinguish the collision between pedestrians and vehicles, and the algorithm for image processing is simpler than the traditional tracking algorithm, and the time is shorter. The results show that the image-based collision detection algorithm based on image processing can effectively and quickly identify the traffic accidents in which people and vehicles collide, and then can issue alarm signals in time, shortening the accident processing time and reducing the accident time. The possibility of a secondary accident has a high practicability in the detection of traffic accidents in which people and vehicles collide.
Key Algorithms of Video Target Detection and Recognition in Intelligent Transportation Systems
Authors: Pan Qingchao , Zhang Haohua
Published: September 2019

With the popularization of video detection and recognition systems and the advancement of video image processing technology, the application research of intelligent transportation systems based on computer vision technology has received more and more attention. It comprehensively utilizes image processing, pattern recognition, artificial intelligence and other technologies. It also involves processing and analyzing the video image sequence collected by the detection system, intelligently understanding the video content and making processing, and dealing with various problems such as accident information judgment, pedestrian and vehicle classification, traffic flow parameter detection, and moving target tracking. It promotes intelligent transportation systems to be more intelligent and practical, and provides comprehensive, real-time traffic status information for traffic management and control. Therefore, the research on the method of traffic information detection based on computer vision has important theoretical and practical significance. The detection and recognition of video targets is an important research direction in the field of intelligent transportation and computer vision. However, due to the background complexity, illumination changes, target occlusion and other factors in the detection and recognition environment, the application still faces many difficulties, and the robustness and accuracy of detection and recognition need to be further improved. In this paper, several key problems in video object detection and recognition are studied, including accurate segmentation of target and background, shadow in complex scenes; accurate classification of extracted foreground targets; and target recognition in complex background. In response to these problems, this paper proposes a corresponding solution.
Efficient and Robust Approach for Heartbeat Detection of ECG Signal
Authors: Ahmed Anas Fouad , Ahmed Mohammed Abdulmunem , Bierk Hussain Mustafa
Published: September 2019

This paper introduces an efficient and robust method for heartbeat detection based on the calculated angles between the successive samples of electrocardiogram (ECG) signal. The proposed approach involves three stages: filtering, computing the angles of the signal and thresholding. The suggested method is applied to two different types of ECG databases (QTDB and MIT-BIH). The results were compared with the other algorithms suggested in previous works. The proposed approach outperformed the other algorithms, in spite of its simplicity and their fast calculations. These features make it applicable in real-time ECG diagnostics systems. The suggested method was implemented in real-time using a low cost ECG acquisition system and it shows excellent performance.
Multi-tribrackets
Authors: Nelson Sam , Pauletich Evan
Published: September 2019

We introduce multi-tribrackets, algebraic structures for region coloring of diagrams of knots and links with different operations at different kinds of crossings. In particular, we consider the case of component multi-tribrackets which have different tribracket operations at single-component crossings and multi-component crossings. We provide examples to show that the resulting counting invariants can distinguish links which are not distinguished by the counting invariants associated to the standard tribracket coloring. We reinterpret the results of [S. Nelson and S. Pico. Virtual tribrackets, preprint (2018), arXiv:1803.03210] in terms of multi-tribrackets and consider future directions for multi-tribracket theory.
Hawking radiation may violate the Penrose cosmic censorship conjecture
Authors: Hod Shahar
Published: September 2019

We analyze the Hawking evaporation process of Reissner–Nordström black holes. It is shown that the characteristic radiation quanta emitted by the charged black holes may turn near-extremal black-hole spacetimes into horizonless naked singularities. This analysis therefore reveals the intriguing possibility that the semi-classical Hawking evaporation process of black holes may violate the fundamental Penrose cosmic censorship conjecture.
On n-absorbing and strongly n-absorbing ideals of amalgamation
Authors: Issoual Mohammed , Mahdou Najib , Moutui Moutu Abdou Salam
Published: September 2019

Let [Formula: see text] be a commutative ring with [Formula: see text]. Let [Formula: see text] be a positive integer. A proper ideal [Formula: see text] of [Formula: see text] is called an n-absorbing ideal (respectively, a strongly n-absorbing ideal) of [Formula: see text] as in [D. F. Anderson and A. Badawi, On [Formula: see text]-absorbing ideals of commutative rings, Comm. Algebra 39 (2011) 1646–1672] if [Formula: see text] and [Formula: see text], then there are [Formula: see text] of the [Formula: see text]’s whose product is in [Formula: see text] (respectively, if whenever [Formula: see text] for ideals [Formula: see text] of [Formula: see text], then the product of some [Formula: see text] of the [Formula: see text]s is contained in [Formula: see text]). The concept of [Formula: see text]-absorbing ideals is a generalization of the concept of prime ideals (note that a prime ideal of [Formula: see text] is a 1-absorbing ideal of [Formula: see text]). Let [Formula: see text] be a ring homomorphism and let [Formula: see text] be an ideal of [Formula: see text] This paper investigates the [Formula: see text]-absorbing and strongly [Formula: see text]-absorbing ideals in the amalgamation of [Formula: see text] with [Formula: see text] along [Formula: see text] with respect [Formula: see text] denoted by [Formula: see text] The obtained results generate new original classes of [Formula: see text]-absorbing and strongly [Formula: see text]-absorbing ideals.
Noetherian domains in which every ideal is isomorphic to a trace ideal
Authors: Mimouni A.
Published: September 2019

This paper seeks an answer to the following question: Let [Formula: see text] be a Noetherian ring with [Formula: see text]. When is every ideal isomorphic to a trace ideal? We prove that for a local Noetherian domain [Formula: see text] with [Formula: see text], every ideal is isomorphic to a trace ideal if and only if either [Formula: see text] is a DVR or [Formula: see text] is one-dimensional divisorial domain, [Formula: see text] is a principal ideal of [Formula: see text] and [Formula: see text] posses the property that every ideal of [Formula: see text] is isomorphic to a trace ideal of [Formula: see text]. Next, we globalize our result by showing that a Noetherian domain [Formula: see text] with [Formula: see text] has every ideal isomorphic to a trace ideal if and only if either [Formula: see text] is a PID or [Formula: see text] is one-dimensional divisorial domain, every invertible ideal of [Formula: see text] is principal and for every non-invertible maximal ideal [Formula: see text] of [Formula: see text], [Formula: see text] is a principal ideal of [Formula: see text] and every ideal of [Formula: see text] is isomorphic to a trace ideal of [Formula: see text]. We close the paper by examining some classes of non-Noetherian domains with this property to provide a large family of original examples.
SBA-15 Templated Mesoporous Graphitic C3N4for Remarkably Enhanced Photocatalytic Degradation of Organic Pollutants under Visible Light
Authors: Liu Hongjin , Wu Haining , Lv Jun , Xu Guangqing , Chen Xing , Zhang Xinyi , Wu Yucheng
Published: September 2019

Organic pollutants in water have been threatening public and environmental health. Developing efficient and sustainable photocatalysts working for degradation of organic pollutants under visible light becomes a big challenge. In this paper, high-efficiency visible light driven catalyst ordered mesoporous graphite nitride carbon (mpg-C3N4) was prepared by using SBA-15 as template and dicyandiamide (C2H4N4) as precursor. The specific surface area of mpg-C3N4can be increased remarkably as compared to that of the bulk graphite nitrite carbon (g-C3N4) by adjusting the ratio of SBA-15 to dicyandiamide. Photocatalytic performance of mpg-C3N4were evaluated systematically by degradation of Rhodamine B (RhB), malachite green (MG) and tetracycline hydrochloride (TC) under visible light irradiation. The results showed that the mpg-C3N4(1:0.5) has the highest photocatalytic activity and stability and the degradation rate is for RhB, MG and TC are all more than seven times that of bulk g-C3N4. After five recycling runs, the mpg-C3N4(1:0.5) remains high photocatalytic activities for the degradation of MG (94%) and TC (81%), respectively. Additionally, radical trapping experiments certified that the main active species are [Formula: see text] and h[Formula: see text], while the role of [Formula: see text]OH is irrelevant in the reaction processes. This work provides a promising pathway to prepare metal-free photocatalyst for degradation of organic pollutants under visible light irradiation.
Surfactant PVA-Stabilized Co–Mo Nanocatalyst Supported by Graphene Oxide Sheets Toward the Hydrolytic Dehydrogenation of Ammonia Borane
Authors: Zhao Xin , Ke Dandan , Han Shumin , Li Yuan , Zhang Hongming , Cai Ying
Published: September 2019

By adding surfactant polyvinyl alcohol (PVA) and controlling the preparation process, we successfully synthesized Co–Mo catalysts. For further improving the dispersion, reduced graphene oxide sheets as catalyst carrier were introduced to synthesize Co–Mo@rGO composite catalyst as highly efficient catalysts for hydrolytic dehydrogenation of ammonia borane. The introduction of Mo for preparing Co–Mo@rGO catalyst helped to form alloy catalyst with better structure, better dispersity and smaller particle size. When the molar ratio of Co and Mo was 0.75:0.25, the bimetallic composite catalyst exhibited superior activity with TOF value of 16.29[Formula: see text]mol[Formula: see text]. The activation energy of the reaction was calculated to be 43.72[Formula: see text]kJ[Formula: see text][Formula: see text]. Furthermore, the reusability tests reveal that waxberry-like Co–Mo still show good catalytic activity with 80.3% of their initial activity in five successive runs. The enhanced catalytic activities were due to the synergistic interaction between graphene sheets and waxberry-like Co–Mo NPs, which was beneficial to improve the dispersion and stability of bimetallic NPs. Also, ligand effects on the formation of waxberry-like structure and amorphous state further promoted the catalytic activity.
Synthesis of Trilaminar Core–Shell Au/α-Fe2O3@SnO2Nanocomposites and their Application for Nonenzymatic Dopamine Electrochemical Sensing
Authors: Zhang Sai , Yue Shijun , Li Jiajia , Zheng Jianbin , Gao Guojie
Published: September 2019

Au nanoparticles anchored on core–shell [Formula: see text]-Fe2O3@SnO2 nanospindles were successfully constructed through hydrothermal synthesis process and used for fabricating a novel nonenzymatic dopamine (DA) sensor. The structure and morphology of the Au/[Formula: see text]-Fe2O3@SnO2 trilaminar nanohybrid film were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The electrochemical properties of the sensor were investigated by cyclic voltammetry and amperometry. The experimental results suggest that the composites have excellent catalytic property toward DA with a wide linear range from 0.5[Formula: see text][Formula: see text]M to 0.47[Formula: see text]mM, a low detection limit of 0.17[Formula: see text][Formula: see text]M (S/[Formula: see text]) and high sensitivity of 397.1[Formula: see text][Formula: see text]A[Formula: see text]mM[Formula: see text][Formula: see text]cm[Formula: see text]. In addition, the sensor exhibits long-term stability, good reproducibility and anti-interference.
A new topological duality for n × m-valued Łukasiewicz–Moisil algebras
Authors: Figallo Aldo V. , Pascual Inés , Pelaitay Gustavo
Published: September 2019

In 2000, Figallo and Sanza introduced [Formula: see text]-valued Łukasiewicz–Moisil algebras which are both a particular case of matrix Łukasiewicz algebras [W. Suchoń, Matrix Łukasiewicz Algebras, Rep. Math. Logic 4 (1975) 91–104] and a generalization of [Formula: see text]-valued Łukasiewicz–Moisil algebras. It is worth noting that unlike what happens in [Formula: see text]-valued Łukasiewicz–Moisil algebras, generally the De Morgan reducts of [Formula: see text]-valued Łukasiewicz–Moisil algebras are not Kleene algebras. Furthermore, in [C. Sanza, [Formula: see text]-valued Łukasiewicz algebras with negation, Rep. Math. Logic 40 (2006) 83–106] an important example which legitimated the study of this class of algebras is provided.

In this paper, we continue the study of [Formula: see text]-valued Łukasiewicz–Moisil algebras (or [Formula: see text]-algebras). More precisely, we determine a new topological duality for these algebras. By means of this duality we characterize the congruences and specially the maximal congruences on [Formula: see text]-algebras. Then these characterizations allow us to assert that [Formula: see text]-algebras are semisimples and obtain a new description of subdirectly irreducible [Formula: see text]-algebras.
Linear time algorithm for dominator chromatic number of trestled graphs
Authors: Arumugam S. , Raja Chandrasekar K.
Published: September 2019

A dominator coloring (respectively, total dominator coloring) of a graph [Formula: see text] is a proper coloring [Formula: see text] of [Formula: see text] such that each closed neighborhood (respectively, open neighborhood) of every vertex of [Formula: see text] contains a color class of [Formula: see text] The minimum number of colors required for a dominator coloring (respectively, total dominator coloring) of [Formula: see text] is called the dominator chromatic number (respectively, total dominator chromatic number) of [Formula: see text] and is denoted by [Formula: see text] (respectively, [Formula: see text]). In this paper, we prove that the dominator coloring problem and the total dominator coloring problem are solvable in linear time for trestled graphs.
Flood-Risk Analysis on Terrains under the Multiflow-Direction Model
Authors: Lowe Aaron , Agarwal Pankaj K.
Published: September 2019

An important problem in terrain analysis is modeling how water flows across a terrain and creates floods by filling up depressions. In this article, we study a number of
flood-risk
related problems: Given a terrain Σ, represented as a triangulated
xy
-monotone surface with
n
vertices, a rain distribution
R
, and a volume of rain ψ, determine which portions of Σ are flooded. We develop efficient algorithms for flood-risk analysis under the multiflow-directions (MFD) model, in which water at a point can flow along multiple downslope edges and which more accurately represent flooding events.

We present three main results: First, we present an
O
(
n
log
n
)-time algorithm to answer a
terrain-flood
query: if it rains a volume ψ according to a rain distribution
R
, determine what regions of Σ will be flooded. Second, we present a
O
(
n
log
n
+
nm
)-time algorithm for preprocessing Σ containing
m
sinks into a data structure of size
O
(
nm
) for answering
point-flood
queries: Given a rain distribution
R
, a volume of rain ψ falling according to
R
, and point
q
∈ Σ, determine whether
q
will be flooded. A point-flood query can be answered in
O
(|
R
|
k
+
k
2
) time, where
k
is the number of maximal depressions in Σ containing the query point
q
and |
R
| is the number of vertices in
R
with positive rainfall. Finally, we present algorithms for answering a
flood-time query
: given a rain distribution
R
and a point
q
∈ Σ, determine the volume of rain that must fall before
q
is flooded. Assuming that the product of two
k
×
k
matrices can be computed in
O
(
k
ω
) time, we show that a flood-time query can be answered in
O
(
nk
+
k
ω
) time. We also give an α-approximation algorithm, for α > 1, which runs in
O
(
n
log
n
log
α
ρ)-time, where ρ is a variable on the terrain that depends on the ratio between depression volumes. We implemented our algorithms for computing terrain and point-flood queries as well as approximate flood-time queries. We tested the efficacy and efficiency of these algorithms on three real terrains of different types (urban, suburban, and mountainous.)
In-body devices: The future of medicine
Authors: Vasisht Deepak , Zhang Guo
Published: September 2019

In the "near" future, devices inside the body will help with endoscopies, biopsies, and even treatment of cancer and Parkinson's disease. What does it take to create such tiny devices fit for operation inside the human body?
Evolving intelligent devices for the future via named data networking
Authors: Zhang Zhiyi , Lu Edward , Guan Yu , Li Tianxiang , Ma Xinyu , Kong Zhaoning , Zhang Lixia
Published: September 2019

As the numbers and capabilities of networked devices continue to grow, they will play an increasingly important role in daily life. Ensuring security and usability will be the first and foremost challenge; Named Data Networking can help address this challenge through localized trust, usable security, and autoconfiguration.
Protecting privacy and open competition with Almond: An open-source virtual assistant
Authors: Lam Monica S. , Campagna Giovanni , Xu Silei , Fischer Michael , Moradshahi Mehrad
Published: September 2019

Will Alexa and Google Assistant become the duopoly platforms on which consumers reach web services and IoTs verbally? With open and collaborative research, we can build the best open-source virtual assistant to ensure choice, privacy, and open competition.
Consumer Behaviour through the Eyes of Neurophysiological Measures: State-of-the-Art and Future Trends
Authors: Cherubino Patrizia , Martinez-Levy Ana C. , Caratù Myriam , Cartocci Giulia , Di Flumeri Gianluca , Modica Enrica , Rossi Dario , Mancini Marco , Trettel Arianna
Published: September 2019

The new technological advances achieved during the last decade allowed the scientific community to investigate and employ neurophysiological measures not only for research purposes but also for the study of human behaviour in real and daily life situations. The aim of this review is to understand how and whether neuroscientific technologies can be effectively employed to better understand the human behaviour in real decision-making contexts. To do so, firstly, we will describe the historical development of neuromarketing and its main applications in assessing the sensory perceptions of some marketing and advertising stimuli. Then, we will describe the main neuroscientific tools available for such kind of investigations (e.g., measuring the cerebral electrical or hemodynamic activity, the eye movements, and the psychometric responses). Also, this review will present different brain measurement techniques, along with their pros and cons, and the main cerebral indexes linked to the specific mental states of interest (used in most of the neuromarketing research). Such indexes have been supported by adequate validations from the scientific community and are largely employed in neuromarketing research. This review will also discuss a series of papers that present different neuromarketing applications, such us in-store choices and retail, services, pricing, brand perception, web usability, neuropolitics, evaluation of the food and wine taste, and aesthetic perception of artworks. Furthermore, this work will face the ethical issues arisen on the use of these tools for the evaluation of the human behaviour during decision-making tasks. In conclusion, the main challenges that neuromarketing is going to face, as well as future directions and possible scenarios that could be derived by the use of neuroscience in the marketing field, will be identified and discussed.
RAGE is a Potential Cause of Onset and Progression of Nonalcoholic Fatty Liver Disease
Authors: Asadipooya Kamyar , Lankarani Kamran B. , Raj Rishi , Kalantarhormozi Mohammadreza
Published: September 2019

Objective. Fatty liver is a rising global health concern, significantly increasing the burden of health care cost. Nonalcoholic fatty liver disease (NAFLD) has a correlation with metabolic syndrome and its complications. Method. We reviewed the literature regarding the mechanisms of developing NAFLD through AGE-RAGE signaling. Results. NAFLD, metabolic syndrome, and production of advanced glycation end-products (AGEs) share many common risk factors and appear to be connected. AGE induces production of the receptor for AGE (RAGE). AGE-RAGE interaction contributes to fat accumulation in the liver leading to inflammation, fibrosis, insulin resistance, and other complications of the fatty liver disease. The immune system, especially macrophages, has an important defense mechanism against RAGE pathway activities. Conclusion. Soluble form of RAGE (sRAGE) has the capability to reduce inflammation by blocking the interaction of AGE with RAGE. However, sRAGE has some limitations, and the best method of usage is probably autotransplantation of transfected stem cells or monocytes, as a precursor of macrophages and Kupffer cells, with a virus that carries sRAGE to alleviate the harmful effects of AGE-RAGE signaling in the settings of fatty liver disease.
Intermittent Claudication in Physiotherapists’ Practice
Authors: Spannbauer Anna , Chwała Maciej , Ridan Tomasz , Berwecki Arkadiusz , Mika Piotr , Kulik Anita , Berwecka Małgorzata , Szewczyk Maria T.
Published: September 2019

Intermittent claudication is a symptom of atherosclerosis of the lower limbs (peripheral arterial disease (PAD)) and is characterized by pain and cramps of lower limb muscles during exercise. Claudication leads to a reduction in physical activity of patients. PAD is a systemic disease. Atherosclerotic lesions located in the arteries of the lower limbs not only pose the risk of the ischemic limb loss, but above all, they are an important prognostic factor. Patients with claudication are at significant risk of cardiovascular complications such as infarcts or strokes. Comprehensive rehabilitation of patients with intermittent claudication based on the current TASC II (Inter-Society Consensus for the Management of Peripheral Arterial Disease) guidelines, ESC (European Society of Cardiology) guidelines, and AHA (American Heart Association) guidelines includes supervised treadmill training, training on a bicycle ergometer, Nordic Walking, resistance exercises of lower limb muscles, and exercises of upper limbs. A trained, educated, and motivated patient has a chance to improve life quality as well as life expectancy.
Successful Clipping of a Giant Anterior Inferior Cerebellar Artery Aneurysm with Combined Transpetrosal Approach
Authors: Nguyen The-Hao , Pham Van-Thanh-Cong , Pham Quynh-Trang , Nguyen Si Anh Hao , Tran Nhu Phong , Vo Hoang-Long
Published: September 2019

Background. The anterior inferior cerebellar artery (AICA) aneurysms are rare lesions whose treatment can be challenging. There are only a few previous reports of surgical treatment for such lesions. Objectives. We present a case of a basilar-AICA aneurysm undergoing surgery with the combined transpetrosal approach. Case Description. A 58-year-old female patient presented clinical signs including headache, diplopia, and right hemiparesis. The radiological imaging showed a basilar-AICA aneurysm measuring 25 × 19 mm. The patient was operated via left combined transpetrosal approach. The outcome was graded mRankin 1. Follow-up computerized tomographic angiography showed no aneurysmal residual and total preservation of basilar artery. Discussions. Surgical indication’s purposes were aneurysmal elimination and reduction of mass effect. Combined transpetrosal approach: proximal segment control and enough space for clipping manipulation. Clipping techniques: Temporary clip for aneurysmal collapsing, “orienting clip”. Conclusion. Giant basilar-AICA aneurysm is very rare lesion. Combined transpetrosal approach is appropriate for surgical clipping. Good surgical outcome is achieved with complete elimination of aneurysm.