bluuebunny/crossref_metadata_2025_split huggingface dataset:
Excitons with Reverse Rectifying Characteristics for Superior Solar Photocatalysis
Authors: Samadi‐Maybodi Abdolraouf , Reza Shariati Mohammad 
Published: May 2018

AbstractThis study demonstrates an inverted energy‐gradient hybrid nanoparticle architecture that supports the formation of 2D excitons in the nanoshell domain. The developed geometry places a wide‐gap semiconductor quantum dot (ZnS, Eg= 3.68 eV) at the core of the nanocomposite particle in order to funnel the photoinduced energy into the low‐gap (CdS, Eg= 2.42 eV) shell layer. This inverted band regime helps to extract the photogenerated excitons into the shell and hence increases the exciton transport quantum efficiency, hereby leading to the superior photocatalytic efficiency for photoredox reactions over the nanohybrid. To demonstrate bandgap engineering and photoinduced charge carrier delocalization, we employed steady‐state and time‐resolved emission and absorption techniques in the presence and absence of an electron quencher (4‐nitrophenol) and hole quencher (4‐methoxyphenol). The significant suppression of band‐edge emissions and the decrement of the fluorescence lifetimes demonstrated the key role of nanoshell on the transfer of photogenerated charge carriers from core to the surface of the photocatalyst. Detailed investigations of the photocatalytic activity of ZnS@CdS and kinetic study of the reactions were also carried out under solar radiation. The contribution of O2•− and •OH to photocatalytic reactions revealed respectively via luminol chemiluminescence and terephthalic acid photoluminescence techniques.
Selective Cu2+ Ion Sensing by Nanoaggregates of Pyridyl‐2,6‐bis(3‐allylsalicylaldehyde)hydrazone
Authors: Rai Abhishek , Tripathi Kamini , Kumar Sonkar Avinash , James Tony D. , Yashaswee Saurabh , Kumar Trigun Surendra , Mishra Lallan 
Published: May 2018

AbstractPyridyl‐2,6‐bis(3‐allylsalicylaldehyde) hydrazone (PYAL) forms nanoaggregates (nPYAL) in THF:water (10:90,v/v) with enhanced emission. The nanoagregates display selective and reversible detection of Cu2+ ions with concomitant changes in their morphology and sizes. The detection of Cu2+ ions in human melanoma MDA MB 435 s cell lines using nPYAL has been demonstrated.
Luminescent Anticancer Acenaphtho[1, 2‐b]quinoxaline: Green Synthesis, DFT and Molecular Docking Studies, Live‐Cell Imaging and Reactivity towards Nucleic Acid and Protein BSA
Authors: De Sourav , Subran Sunisha Kottukulam , Ramasamy Selva kumar , Banerjee Subhasis , Paira Priyankar , Kalleshappa Ashok Kumar Somanahalli 
Published: May 2018

AbstractA series of acenaphtho[1, 2‐b]quinoxaline derivatives 3 a‐3 j were prepared using single step condensation of acenaphthoquinone with different o‐phenylene diamine derivatives on water under sonication. Interaction of 9‐fluoro acenaptho[1, 2‐b]quinoxaline (3 g) with calf‐thymus DNA has been explored by using absorption and emission techniques. The compound 3 g cleave DNA oxidatively without any exogenous additives. The protein binding ability has been observed by quenching of tryptophan emission in the presence of 3 g using bovine serum albumin (BSA) as model protein. The DNA and protein docking study suggests that most of the quinoxaline derivatives interact with DNA through the minor groove and occupies the active site of the protein favorably by hydrogen bonding. The density functional calculations carried out on 3 a‐3 j have shown that electron‐rich regions in the highest occupied orbital are localized on the quinoxaline moiety. Live‐cells imaging result showed the clear evidence of strong cellular uptake of compound 3 g in HeLa cell line. The MTT assay concluded that compounds:9,10‐dichloroacenaptho[1, 2‐b]quinoxaline (3 d), 9‐bromoacenaptho[1, 2‐b]quinoxaline (3 e), 3 g and 9‐chloro‐10‐fluroacenaptho[1, 2‐b]quinoxaline (3 j) were exhibited highly selective cytotoxicity profiles in two cancer cell lines such as MCF‐7 and HeLa with respect to normal HEK‐293. Among them, compound 3 g displayed high potency and selectivity in all the cell lines.
Green Synthetic Approach for the Construction of 3,5‐Disubstituted 1,2,4‐Oxadiazoles and Ataluren Analogues from Dithioesters Using Water
Authors: Swarup Hassan A. , Chaithra Nagaraju , Mantelingu Kempegowda , Rangappa Kanchugarkoppal S. 
Published: May 2018

AbstractAn innovative green synthesis of 3,5‐disubstituted 1,2,4‐oxadiazoles from dithioesters using water as a solvent. This approach becomes more interesting because it undergoes nucleophilic substitution–dehydration–intramolecular cyclization in a single step to give 3,5‐disubstituted 1,2,4‐oxadiazoles in good to excellent yields under transition‐metal free conditions and allows wide functional group tolerance. This green protocol leads to synthesis of a drug lead molecule, Ataluren and their analogues.
Using Bispyrene Fluorescence Probe for Determining the Multiple States of Organogel
Authors: Liang Yong , Tang Jun , Wang Xiang , Zhao Siqi , Luo Ting , Shuai Cijun , Jiang Jinzhi , Cai Jianfeng , Xu Hai 
Published: May 2018

AbstractA bispyrene fluorescence probe with the cavitand linkage (compound 1) was synthesized, which was proved to be a versatile platform due to the ability of adopting two spatially well‐defined conformations: a closed vase and an expanded kite. vase‐1 was switched to kite‐1 upon addition of TFA or cooling, whereas kite‐1 was isomerized to vase‐1 in the presence of NEt3 or through heating. The interconversion in this molecular switch was tightly associated with the change of fluorescence as we found that changing the temperature and pH of the system‐ a bispyrene compound 1 and gelator 2 led to the sol ‐ gel transformation and reversible intramolecular excimer emission. Briefly, the results show that the fluorescence decreases in the gelation phase and is enhanced in the solution due to variations in temperature and pH. we thus concluded that 1 could be a useful fluorescence probe to determine the multiple states of organogel.
Lattice‐Defect‐Induced Piezo Response in Methylammonium‐Lead‐Iodide Perovskite Based Nanogenerator
Authors: Dhar Joydeep , Sil Sayantan , Hoque Nur A. , Dey Arka , Das Sukhen , Ray Partha P. , Sanyal Dirtha 
Published: May 2018

AbstractMethylammonium lead iodide (MAPbI3), a hybrid perovskite has become the semiconductor for case studies in several material properties due to its multi‐faceted electronic application. Other than photovoltaics, generation of piezoelectricity from hybrid perovskites has been reported previously, though its origin remained unsubstantiated. In this report, MAPbI3 with different degrees of crystal defects as determined by positron annihilation spectroscopy are developed through ball‐mill grinding procedure and utilized to fabricate flexible piezoelectric nanogenerators. We have demonstrated that at room temperature the lattice defects play the pivotal role in governing the ionic polarization which in principle governs the piezo‐effect in MAPbI3. The best device performance is exhibited by maximum defect containing sample having significant amount of Pb2+ defects. A device fabricated with 5 wt% PDMS composite produces piezo‐voltage of more than 100 V with a maximum power density of 0.3 mW/cm3 and can illuminate commercially available 30 blue light emitting diodes.
Comparative analysis of various models of Rogowski coil for very fast transient study
Authors: Hu Chen , Li Hong‐bin , Jiao Yang , Zhang Zhu , Li Kun 
Published: May 2018

Switching operations of the disconnecting switch (DS) within high‐voltage gas‐insulated substations generate very fast transient electromagnetic interferences. Fast front pulses induced by these interferences produce high‐level transient currents that can lead to disturbed voltage output of Rogowski coil current transformers (RCTs). Predicting the transient characteristics of RCTs requires the implementation of accurate simulation models of the Rogowski coil. Concentrating on the DS operation process, this paper analyzes the performance of the lumped parameter model (LPM) and the distributed parameter model (DPM) available in the literature by means of comparisons in the time domain and frequency domain between two models, as well as comparisons between simulation results and measurement results in terms of the waveform properties and the distribution of amplitude. It is confirmed that the simulation results based on the DPM show better agreement with the measurements than those based on the LPM. It is also indicated that the maximum amplitude of the RCT output is approximately 580 mV with the dominant frequency of 2 MHz during the fast transient. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Combination vinblastine, prednisolone and toceranib phosphate for treatment of grade II and III mast cell tumours in dogs
Authors: Olsen Jaime A. , Thomson Maurine , O'Connell Kathleen , Wyatt Ken 
Published: May 2018

AbstractThis retrospective study evaluates the progression‐free interval and survival outcomes of 40 canine (Canis familiaris) patients with Patnaik grade II and III mast cell tumours treated with combination vinblastine, prednisolone and toceranib phosphate from 2011 to 2015. Patients were subdivided into three groups; patients who received neoadjuvant therapy for poorly operable lesions, patients who received adjuvant therapy following surgical resection and patients being palliated for gross metastatic disease. Median survival time (MST) for the neoadjuvant group was not reached. Median survival time for the remaining groups was 893 days and 218 days, respectively. This combination demonstrated response in 90% (26/29) patients with measurable disease. The predominant side effects related to this chemotherapy combination were gastrointestinal in origin. Further prospective studies are required to further validate the efficacy of this treatment protocol.
How Was the Power of the Criminal Corpse Harnessed in Early Modern England?
Authors: Tarlow Sarah , Battell Lowman Emma 
Published: May 2018

AbstractDuring the age of spectacular punishment, the bodies of those who threatened the State or social order were subject to highly visible symbolic justice. The executions and dead bodies of traitors in particular were put at the centre of acts of theatre. At the same time, new discourses around the dead body were taking shape at this time: especially discourses about anatomy and medicine; and a new theology that came to dominate British religion after the Reformation and altered profoundly the relationship between the living and the dead.
Hanging in Chains
Authors: Tarlow Sarah , Battell Lowman Emma 
Published: May 2018

AbstractFor a minority of convicted murderers the decision was taken to gibbet their body rather than send it for dissection. This chapter reviews what was involved practically in gibbeting a body (or ‘hanging in chains’ as it was known), including the locations chosen, and the technology of the gibbet. Three cases of hanging in chains are discussed: two in England and one in Canada. The Canadian one is especially interesting as it is a rare incidence of a woman being gibbeted (no women are known to have been gibbeted in Britain during this period). Finally, some enduring myths of the gibbet are described.
Seeking the Physical Remains of the Criminal Corpse
Authors: Tarlow Sarah , Battell Lowman Emma 
Published: May 2018

AbstractIn the first of two chapters considering the legacy of the criminal corpse we examine what happened to the physical remains of criminal bodies—partial and fragmented as they were by the end of their post-mortem punishments. Very few remains received any sort of burial, but a number were put to use as mounted skeletons or anatomical preparations for educational purposes. Other remains were curated as macabre souvenirs. Other uses included modelling for artists, experimental subjects for galvanism or phrenology; and the medicinal use of body parts in both orthodox and folk medicine.
Energy vs. QoX Network- and Cloud Services Management
Authors: Blanco Bego , Liberal Fidel , Lassila Pasi , Aalto Samuli , Sainz Javier , Gribaudo Marco , Pernici Barbara 
Published: May 2018

AbstractNetwork Performance (NP)- and more recently Quality of Service/Experience/anything (QoS/QoE/QoX)-based network management techniques focus on the maximization of associated Key Performance Indicators (KPIs). Such mechanisms are usually constrained by certain thresholds of other system design parameters. e.g., typically, cost. When applied to the current competitive heterogeneous Cloud Services scenario, this approach may have become obsolete due to its static nature. In fact, energy awareness and the capability of modern technologies to deliver multimedia content at different possible combinations of quality (and prize) demand a complex optimization framework.It is therefore necessary to define more flexible paradigms that make it possible to consider cost, energy and even other currently unforeseen design parameters not as simple constraints, but as tunable variables that play a role in the adaptation mechanisms.In this chapter we will briefly introduce most commonly used frameworks for multi-criteria optimization and evaluate them in different Energy vs. QoX sample scenarios. Finally, the current status of related network management tools will be described, so as to identify possible application areas.
Traffic Management for Cloud Federation
Authors: Burakowski Wojciech , Beben Andrzej , van den Berg Hans , Bosman Joost W. , Hasslinger Gerhard , Kertesz Attila , Latre Steven , van der Mei Rob , Pflanzner Tamas , Poullie Patrick Gwydion , Sosnowski Maciej , Spinnewyn Bart , Stiller Burkhard 
Published: May 2018

AbstractThe chapter summarizes activities of COST IC1304 ACROSS European Project corresponding to traffic management for Cloud Federation (CF). In particular, we provide a survey of CF architectures and standardization activities. We present comprehensive multi-level model for traffic management in CF that consists of five levels: Level 5 - Strategies for building CF, Level 4 - Network for CF, Level 3 - Service specification and provision, Level 2 - Service composition and orchestration, and Level 1 - Task service in cloud resources. For each level we propose specific methods and algorithms. The effectiveness of these solutions were verified by simulation and analytical methods. Finally, we also describe specialized simulator for testing CF solution in IoT environment.
Efficient Simulation of IoT Cloud Use Cases
Authors: Markus Andras , Marques Andre , Kecskemeti Gabor , Kertesz Attila 
Published: May 2018

AbstractIn the paradigm of Internet of Things (IoT), sensors, actuators and smart devices are connected to the Internet. Application providers utilize the connectivity of these devices with novel approaches involving cloud computing. Some applications require in depth analysis of the interaction between IoT devices and clouds. Research in this area is facing questions like how we should govern such large cohort of devices, which may easily go up often to tens of thousands. In this chapter we investigate IoT Cloud use cases, and derive a general IoT use case. Distributed systems simulators could help in such analysis, but they are problematic to apply in this newly emerging domain, since most of them are either too detailed, or not extensible enough to support the to be modelled devices. Therefore we also show how generic IoT sensors could be modelled in a state of the art simulator using our generalized case to exemplify how the fundamental properties of IoT entities can be represented in the simulator. Finally, we validate the applicability of the introduced IoT extension with a fitness and a meteorological use case.
Scalable Traffic Quality and System Efficiency Indicators Towards Overall Telecommunication System’s QoE Management
Authors: Poryazov Stoyan , Saranova Emiliya , Ganchev Ivan 
Published: May 2018

AbstractConceptual and analytical models of an overall telecommunication system are utilized in this chapter for the definition of scalable indicators towards Quality of Service (QoS) monitoring, prediction, and management. The telecommunication system is considered on different levels – service phase, service stage, network, and overall system. The network itself is presented in seven service stages – A-user, A-terminal, Dialing, Switching, B-terminal Seizure, B-terminal, and B-user, each having its own characteristics and specifics. Traffic quality indicators are proposed on each level. Two network cost/quality ratios are proposed – mean and instantaneous – along with illustrative numerical predictions of the latter, which could be useful for dynamic pricing policy execution, depending on the network load. All defined indicators could be considered as sources for Quality of Experience (QoE) prediction.
The Value of Context-Awareness in Bandwidth-Challenging HTTP Adaptive Streaming Scenarios
Authors: Liotou Eirini , Hoßfeld Tobias , Moldovan Christian , Metzger Florian , Tsolkas Dimitris , Passas Nikos 
Published: May 2018

AbstractVideo streaming has become an indispensable technology in people’s lives, while its usage keeps constantly increasing. The variability, instability and unpredictability of network conditions pose one of the biggest challenges to video streaming. In this chapter, we analyze HTTP Adaptive Streaming, a technology that relieves these issues by adapting the video reproduction to the current network conditions. Particularly, we study how context awareness can be combined with the adaptive streaming logic to design a proactive client-based video streaming strategy. Our results show that such a context-aware strategy manages to successfully mitigate stallings in light of network connectivity problems, such as an outage. Moreover, we analyze the performance of this strategy by comparing it to the optimal case, as well as by considering situations where the awareness of the context lacks reliability.
Conceptual and Analytical Models for Predicting the Quality of Service of Overall Telecommunication Systems
Authors: Poryazov Stoyan , Saranova Emiliya , Ganchev Ivan 
Published: May 2018

AbstractThis chapter presents scalable conceptual and analytical performance models of overall telecommunication systems, allowing the prediction of multiple Quality of Service (QoS) indicators as functions of the user- and network behavior. Two structures of the conceptual presentation are considered and an analytical method for converting the presentations, along with corresponding additive and multiplicative metrics, is proposed. A corresponding analytical model is elaborated, which allows the prediction of flow-, time-, and traffic characteristics of terminals and users, as well as the overall network performance. In accordance with recommendations of the International Telecommunications Union’s Telecommunication Standardization Sector (ITU-T), analytical expressions are proposed for predicting four QoS indicators. Differentiated QoS indicators for each subservice, as well as analytical expressions for their prediction, are proposed. Overall pie characteristics and their causal aggregations are proposed as causal-oriented QoS indicators. The results demonstrate the ability of the model to facilitate a more precise dynamic QoS management as well as to serve as a source for predicting some Quality of Experience (QoE) indicators.
An analytic superfield formalism for tree superamplitudes in D=10 and D=11
Authors: Bandos Igor 
Published: May 2018

Abstract

Tree amplitudes of 10D supersymmetric Yang-Mills theory (SYM) and 11D supergravity (SUGRA) are collected in multi-particle counterparts of analytic on-shell superfields. These have essentially the same form as their chiral 4D counterparts describing

$$ \mathcal{N}=4 $$

N
=
4

SYM and

$$ \mathcal{N}=8 $$

N
=
8

SUGRA, but with components dependent on a different set of bosonic variables. These are the D=10 and D=11 spinor helicity variables, the set of which includes the spinor frame variable (Lorentz harmonics) and a scalar density, and generalized homogeneous coordinates of the coset

$$ \frac{\mathrm{SO}\left(D-2\right)}{\mathrm{SO}\left(D-4\right)\otimes \mathrm{U}(1)} $$

SO

D
−
2

SO

D
−
4

⊗
U

1

(internal harmonics).
We present an especially convenient parametrization of the spinor harmonics (Lorentz covariant gauge fixed with the use of an auxiliary gauge symmetry) and use this to find (a gauge fixed version of) the 3-point tree superamplitudes of 10D SYM and 11D SUGRA which generalize the 4 dimensional anti-MHV superamplitudes.
Lattice black branes: sphere packing in general relativity
Authors: Dias Óscar J. C. , Santos Jorge E. , Way Benson 
Published: May 2018

AbstractWe perturbatively construct asymptotically$$ {\mathrm{\mathbb{R}}}^{1,3}\times {\mathbb{T}}^2 $$ℝ1,3×T2black branes with multiple inhomogeneous directions and show that some of them are thermodynamically preferred over uniform branes in both the microcanonical and canonical ensembles. This demonstrates that, unlike five-dimensional black strings, the instability of some unstable black branes has a plausible endpoint that does not require a violation of cosmic censorship.
Defunctioning Stomas Result in Significantly More Short‐Term Complications Following Low Anterior Resection for Rectal Cancer
Authors: Emmanuel Andrew , Chohda Ezzat , Lapa Christo , Miles Andrew , Haji Amyn , Ellul Joe 
Published: May 2018

AbstractBackgroundStudies suggest that defunctioning stomas reduce the rate of anastomotic leakage and urgent reoperations after anterior resection. Although the magnitude of benefit appears to be limited, there has been a trend in recent years towards routinely creating defunctioning stomas. However, little is known about post‐operative complication rates in patients with and without a defunctioning stoma. We compared overall short‐term post‐operative complications after low anterior resection in patients managed with a defunctioning stoma to those managed without a stoma.MethodsA retrospective cohort study of patients undergoing elective low anterior resection of the rectum for rectal cancer. The primary outcome was overall 90‐day post‐operative complications.ResultsTwo hundred and three patients met the inclusion criteria for low anterior resection. One hundred and forty (69%) had a primary defunctioning stoma created. 45% received neoadjuvant radiotherapy. Patients with a defunctioning stoma had significantly more complications (57.1 vs 34.9%, p = 0.003), were more likely to suffer multiple complications (17.9 vs 3.2%, p < 0.004) and had longer hospital stays (13.0 vs 6.9 days, p = 0.005) than those without a stoma. 19% experienced a stoma‐related complication, 56% still had a stoma 1 year after their surgery, and 26% were left with a stoma at their last follow‐up. Anastomotic leak rates were similar but there was a significantly higher reoperation rate among patients managed without a defunctioning stoma.ConclusionPatients selected to have a defunctioning stoma had an absolute increase of 22% in overall post‐operative complications compared to those managed without a stoma. These findings support the more selective use of defunctioning stomas.Study registrationRegistered at www.researchregistry.com (UIN: researchregistry3412).