bluuebunny/crossref_metadata_2025_split huggingface dataset:
An evidence‐based approach to object pose estimation from LiDAR measurements in challenging environments
Authors: Phillips T. G. , McAree P. R. 
Published: April 2018

AbstractThis paper addresses the problem of estimating object pose from high‐density LiDAR measurements in unpredictable field robotic environments. Point‐cloud measurements collected in such environments do not lend themselves to providing an initial estimate or systematic segmentation of the point‐cloud. A novel approach is presented that evaluates measurements individually for the evidence they provide to a collection of pose hypotheses. A maximum evidence strategy is constructed that is based in the idea that the most likely pose must be that which is most consistent with the observed LiDAR range measurements. This evidence‐based approach is shown to handle the diversity of range measurements without an initial estimate or segmentation. The method is robust to dust. The approach is demonstrated by two pose estimation problems associated with the automation of a large mining excavator.
Synthesis of Zn Modified Carbon Nitrides Heterogeneous Catalyst for the Cycloaddition of CO2 to Epoxides
Authors: Wang Xin , Liu Mengshuai S. , Yang Li , Lan Jianwen W. , Chen Yanglin L , Sun Jianmin M. 
Published: April 2018

AbstractVarious Zn modified carbon nitride (Zn‐C3N4) were facilely prepared by one‐step thermal polymerization method, and were successfully used for the chemical fixation of CO2 to epoxides producing cyclic carbonates in the presence of KI co‐catalyst. The combination of binary heterogeneous Zn‐C3N4 and KI exhibited efficient catalysis for the coupling of CO2 and epoxides. The effects of different reaction parameters, including reaction temperature, CO2 pressure, reaction time, and catalyst loading on activities were discussed. The yield of propylene carbonate (PC) could reach 99% under the optimized reaction conditions (130 oC, 2 MPa, 5 h) without additional solvent used, and the selectivity was above 99%. The catalysts showed good recycle performance and versatility for the cycloaddition of CO2 to various epoxides. The possible reaction mechanism over Zn‐C3N4/KI catalytic system was proposed. The developed Zn‐C3N4/KI catalysts exhibited attractive application as simple, effective and ecofriendly alternative catalysts for CO2 effective utilization.
Synthesis of a Series of 2‐Aminodiarylsulfones by Brønsted Acid Mediated Regioselective Fries Type Rearrangement of N‐Alkyl‐N ‐arylbenzenesulfonamides
Authors: Debnath Sudarshan , Mondal Shovan 
Published: April 2018

AbstractA new series of 2‐aminodiarylsulfones have been prepared from N‐alkyl‐N‐arylbenzenesulfonamides by Fries‐type rearrangement. Some aspects like regioselectivity, high yields and short reaction times make this rearrangement much more attractive. The structures of the 2‐aminodiarylsulfones are confirmed from single crystal XRD analysis.
Visible Light‐Driven Biginelli Reaction over Mesoporous g‐C3N4 Lewis‐Base Catalyst
Authors: Devthade Vidyasagar , Kamble Gopichand , Ghugal Sachin G , Chikhalia Kishor H. , Umare Suresh S 
Published: April 2018

AbstractIn current work, we explore a new catalytic approach to multicomponent Biginelli condensation using mesoporous graphitic carbon nitride (mpg‐C3N4) as heterogeneous Lewis‐base catalyst. Present protocol provides solvent free, mild reaction condition, optimal yield and easy separation of catalyst. This method also offers ample yield of pure products within very short reaction time. Heterogeneously dispersed mpg‐C3N4 catalyst is stable and recyclable with consistent catalytic activity under visible light irradiation.
Scope and Limitations of Leuckart‐Wallach‐Type Reductive Amination: Chemoselective Synthesis of Tertiary Amines from Aldehydes under Neat Conditions
Authors: De Aramita , Ghosal Nirnita Chakraborty , Mahato Sachinta , Santra Sougata , Zyryanov Grigory V. , Majee Adinath 
Published: April 2018

AbstractWe have developed a convenient method to synthesize tertiary amines selectively with a variety of aldehydes and primary amines using commercially available formic acid as reducing agent. In our methodology we have shown that we can prepare a variety of tertiary amines by changing both the amines as well as aldehydes. Clean reaction, operational simplicity, easily accessible reactants, metal and solvent‐free and environmentally friendly reaction conditions are the notable advantages of this procedure.
Tunable Magnetism in Nanoporous CuNi Alloys by Reversible Voltage‐Driven Element‐Selective Redox Processes
Authors: Quintana Alberto , Menéndez Enric , Isarain‐Chávez Eloy , Fornell Jordina , Solsona Pau , Fauth François , Baró Maria Dolors , Nogués Josep , Pellicer Eva , Sort Jordi 
Published: April 2018

AbstractVoltage‐driven manipulation of magnetism in electrodeposited 200 nm thick nanoporous single‐phase solid solution Cu20Ni80 (at%) alloy films (with sub 10 nm pore size) is accomplished by controlled reduction‐oxidation (i.e., redox) processes in a protic solvent, namely 1 m NaOH aqueous solution. Owing to the selectivity of the electrochemical processes, the oxidation of the CuNi film mainly occurs on the Cu counterpart of the solid solution, resulting in a Ni‐enriched alloy. As a consequence, the magnetic moment at saturation significantly increases (up to 33% enhancement with respect to the as‐prepared sample), while only slight changes in coercivity are observed. Conversely, the reduction process brings Cu back to its metallic state and, remarkably, it becomes alloyed to Ni again. The reported phenomenon is fully reversible, thus allowing for the precise adjustment of the magnetic properties of this system through the sign and amplitude of the applied voltage.
Revealing the Double‐Edged Sword Role of Graphene on Boosted Charge Transfer versus Active Site Control in TiO2 Nanotube Arrays@RGO/MoS2 Heterostructure
Authors: Quan Quan , Xie Shunji , Weng Bo , Wang Ye , Xu Yi‐Jun 
Published: April 2018

AbstractCharge separation/transfer is generally believed to be the most key factor affecting the efficiency of photocatalysis, which however will be counteracted if not taking the active site engineering into account for a specific photoredox reaction. Here, a 3D heterostructure composite is designed consisting of MoS2 nanoplatelets decorated on reduced graphene oxide‐wrapped TiO2 nanotube arrays (TNTAs@RGO/MoS2). Such a cascade configuration renders a directional migration of charge carriers and controlled immobilization of active sites, thereby showing much higher photoactivity for water splitting to H2 than binary TNTAs@RGO and TNTAs/MoS2. The photoactivity comparison and mechanistic analysis reveal the double‐edged sword role of RGO on boosted charge separation/transfer versus active site control in this composite system. The as‐observed inconsistency between boosted charge transfer and lowered photoactivity over TNTAs@RGO is attributed to the decrease of active sites for H2 evolution, which is significantly different from the previous reports in literature. The findings of the intrinsic relationship of balanced benefits from charge separation/transfer and active site control could promote the rational optimization of photocatalyst design by cooperatively manipulating charge flow and active site control, thereby improving the efficiency of photocatalysis for target photoredox processes.
Defective N/S‐Codoped 3D Cheese‐Like Porous Carbon Nanomaterial toward Efficient Oxygen Reduction and Zn–Air Batteries
Authors: Zhu Jiawei , Li Wenqiang , Li Shuaihu , Zhang Jian , Zhou Huang , Zhang Chengtian , Zhang Jianan , Mu Shichun 
Published: April 2018

AbstractDeveloping a facile and cost‐efficient method to synthesize carbon‐based nanomaterials possessing excellent structural and functional properties has become one of the most attractive topics in energy conversion and storage fields. In this study, density functional theory calculation results reveal the origin of high oxygen reduction reaction (ORR) activity predominantly derived from the synergistic effect of intrinsic defects and heteroatom dopants (e.g., N, S) that modulate the bandgap and charge density distribution of carbon matrix. Under the guidance of the first‐principle prediction, by using ultralight biomass waste as precursor of C, N, and S elements, a defect‐rich and N/S dual‐doped cheese‐like porous carbon nanomaterial is successfully designed and constructed. Herein, the intrinsic defects are artfully generated in terms of alkaline and ammonia activation. The electrochemical measurements display that such a material owns a comparable ORR activity (E1/2 = 0.835 V) to the commercial Pt/C catalyst, along with splendid durability and methanol tolerance in alkali media. Furthermore, as cathode catalyst, it displays a high Zn–air battery performance. The excellent ORR activity of the catalyst can be attributed to its unique 3D porous architecture, abundant intrinsic defects, and high‐content active heteroatom dopants in the carbon matrix.
Nanostructured Li3V2(PO4)3 Cathodes
Authors: Tan Huiteng , Xu Lianhua , Geng Hongbo , Rui Xianhong , Li Chengchao , Huang Shaoming 
Published: April 2018

AbstractTo further increase the energy and power densities of lithium‐ion batteries (LIBs), monoclinic Li3V2(PO4)3 attracts much attention. However, the intrinsic low electrical conductivity (2.4 × 10−7 S cm−1) and sluggish kinetics become major drawbacks that keep Li3V2(PO4)3 away from meeting its full potential in high rate performance. Recently, significant breakthroughs in electrochemical performance (e.g., rate capability and cycling stability) have been achieved by utilizing advanced nanotechnologies. The nanostructured Li3V2(PO4)3 hybrid cathodes not only improve the electrical conductivity, but also provide high electrode/electrolyte contact interfaces, favorable electron and Li+ transport properties, and good accommodation of strain upon Li+ insertion/extraction. In this Review, light is shed on recent developments in the application of 0D (nanoparticles), 1D (nanowires and nanobelts), 2D (nanoplates and nanosheets), and 3D (nanospheres) Li3V2(PO4)3 for high‐performance LIBs, especially highlighting their synthetic strategies and promising electrochemical properties. Finally, the future prospects of nanostructured Li3V2(PO4)3 cathodes are discussed.
A Host‐Configured Lithium–Sulfur Cell Built on 3D Nickel Photonic Crystal with Superior Electrochemical Performances
Authors: Lin Shengxuan , Yan Yang , Cai Zihe , Liu Lin , Hu Xiaobin 
Published: April 2018

AbstractThe insulator of the sulfur cathode and the easy dendrites growth of the lithium anode are the main barriers for lithium–sulfur cells in commercial application. Here, a 3D NPC@S/3D NPC@Li full cell is reported based on 3D hierarchical and continuously porous nickel photonic crystal (NPC) to solve the problems of sulfur cathode and lithium anode at the same time. In this case, the 3D NPC@S cathode can not only offer a fast transfer of electron and lithium ion, but also effectively prevent the dissolution of polysulfides and the tremendous volume change during cycling, and the 3D NPC@Li anode can efficiently inhibit the growth of lithium dendrites and volume expansion, too. As a result, the cell exhibits a high reversible capacity of 1383 mAh g−1 at 0.5 C (the current density of 837 mA g−1), superior rate ability (the reversible capacity of 735 mAh g−1 at the extremely high current density of 16 750 mA g−1) with excellent coulombic efficiency of about 100% and an excellent cycle life over 500 cycles with only about 0.026% capacity loss per cycle.
Synchrotron‐Based X‐ray Absorption Fine Structures, X‐ray Diffraction, and X‐ray Microscopy Techniques Applied in the Study of Lithium Secondary Batteries
Authors: Li Weihan , Li Minsi , Hu Yongfeng , Lu Jun , Lushington Andrew , Li Ruying , Wu Tianpin , Sham Tsun‐Kong , Sun Xueliang 
Published: April 2018

AbstractOwing to the recent advance of third‐generation synchrotron radiation (SR) sources, SR‐based X‐ray techniques have been widely applied to study lithium‐ion batteries, lithium–sulfur batteries, and lithium–oxygen batteries to solve material challenges. SR‐based techniques provide high chemical and physical sensitivity and a comprehensive picture of material structure and reaction mechanisms. An in‐depth understanding of batteries is imperative for the development of future energy storage devices with enhanced electrochemical performance to meet societies' growing need for devices with high energy density. Here, recent progress in the application of SR techniques for lithium secondary batteries with a focus on several techniques, including X‐ray absorption fine structure, synchrotron X‐ray diffraction, and synchrotron X‐ray microscopy techniques is reviewed. The working principle for all characterization techniques is introduced to provide context for how the technique is used in the field of energy storage. Through discussing the utilization of SR techniques in different directions of batteries, including electrodes, electrolytes, and interfaces, the practical application strategies of techniques in batteries are clarified. By summarizing and discussing the application of SR techniques in batteries, the aim is to highlight the crucial role of SR characterization in the development of advanced energy materials.
α‐Electrophilic Reactivity of Nitronates
Authors: Tabolin A. A. , Sukhorukov A. Yu. , Ioffe S. L. 
Published: April 2018

AbstractChemistry of covalent nitronates regarding nucleophilic addition to C=N bond is described. Various types of electrophilic activation of nitronates and stability of formed products are discussed with main attention paid to authors’ work in the area.
An intelligent method for wind power forecasting based on integrated power slope events prediction and wind speed forecasting
Authors: Li Fudong , Liao Huan‐yu 
Published: April 2018

In this paper, we study an intelligent wind power prediction method by taking the prediction time horizons and prediction accuracy into account. The wind power slope events are defined, and multiple support vector machines are applied to the classification of slope down/up events for multistep‐ahead scenarios. The wind speed series are decomposed by using the maximum overlap discrete wavelet transform (MODWT), and each decomposed signal is forecast using an adaptive wavelet neural network (AWNN) individually. The network is trained for wind speed prediction up to 24 h ahead. Based on slope events forecasting and wind speed forecasting, an improved radial basis function neural network (RBFNN) is proposed to predict wind power up to 24 h ahead. The proposed model is tested by using wind power data collected from a real wind farm. The analysis results validate that both the prediction time horizons and the prediction accuracy are guaranteed, and the proposed method can be applied to the optimal scheduling of wind farms 1 day in advance. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
GDPR puts vendor contracts in the security spotlight
Authors: Brook David 
Published: April 2018

However, this needn't be an onerous task. In fact, as David Brook of Turnstone Services points out, successful contract reviews can bring broader benefits. Each contract term relating to data security can be clarified and strengthened as part of a tighter, more comprehensive IT security policy. The EU's General Data Protection Regulation (GDPR), which is about to come into force, requires the contracts between an IT department and its suppliers to be reviewed and updated. 1 However, successful contract reviews can bring broader benefits – and to IT security in particular.
ASYMMETRIC EXCHANGE RATE PASS-THROUGH IN U.S. IMPORTS OF COCOA
Authors: LUCKSTEAD JEFF 
Published: April 2018

AbstractBoth the autoregressive distributed lag (ARDL) and the nonlinear ARDL frameworks are applied to model U.S. imports of cocoa beans from Côte d'Ivoire, Ghana, and the Dominican Republic (more than 90% of U.S. cocoa imports originate from these three countries). The results provide evidence of nonlinear and asymmetric pass-through of exchange rates, regional quality difference, and imperfect competition in U.S. cocoa imports. Furthermore, a rise or fall in U.S. income leads to an increase or decrease in U.S. cocoa imports.
Effects of body fat mass and therapeutic weight loss on vitamin D status in privately owned adult dogs
Authors: Hookey Tabitha J. , Backus Robert C. , Wara Allison M. 
Published: April 2018

AbstractMore than one-third of humans and companion dogs in Western societies are overweight or obese. In people, vitamin D deficiency is widespread and associated with obesity, a now recognised inflammatory state. Low vitamin D status occurs in dogs with inflammatory conditions, but its relationship with obesity has not been investigated. In otherwise healthy privately owned adult dogs of ideal body condition (control,n7) and dogs with overweight to obese body condition (treatment,n8), serum 25-hydroxyvitamin D (25(OH)D) concentration and body composition as inferred from2H-labelled water dilution space were evaluated. Subsequently, the dogs were transitioned to a commercial canine therapeutic weight-loss diet; control dogs were fed to maintain body weight and treatment dogs were energy-restricted to achieve a safe weight-loss rate. Thereafter, serum 25(OH)D concentration was re-evaluated 8 weeks after diet transition, and at the study end, which was 6 months or when ideal body condition was achieved. At study end, body composition analysis was repeated. Initial body condition scores and percentage body fat were positively correlated (ρ = 0·891;P< 0·001). However, percentage body fat and serum 25(OH)D concentration were not significantly correlated. Final serum 25(OH)D concentrations were greater (P< 0·05) than initial concentrations for control and treatment groups, indicating a diet but not weight-loss effect on vitamin D status. These findings suggest that vitamin D status of dogs is not affected by obesity or loss of body fat with therapeutic weight reduction.
Recent changes in reproductive phenology of a K-selected aquatic insect predator, Belostoma flumineum Say (Heteroptera, Belostomatidae)
Authors: Kight S.L. , Coffey G.L. , Tanner A.W. , Dmytriw M.P. , Tedesco S.L. , Hoang J. , Aboagye A.K. 
Published: April 2018

AbstractThe timing of critical events like mating, migration, and development has noticeably and recently shifted in many populations of diverse organisms. Here, we report a change in the breeding phenology of giant waterbugs, Belostoma flumineum Say (Heteroptera, Belostomatidae), in the northeastern United States. Waterbugs collected in 2005 and 2006 exhibited previously typical patterns of mating and reproduction: two annual reproductive peaks in which overwintered adults mated in the spring and young adults from a new generation mated in the fall. In 2012 and 2015, despite similar sampling effort, we detected no fall breeding activity in the study area. Reproductive behaviour under controlled laboratory conditions was also different between the earlier (2005 and 2006) and recent (2012 and 2015) years: waterbugs collected in recent years exhibited significant delays in reproduction (>30 days) under similar photoperiod and thermal conditions. We discuss potential causes of this dramatic change in reproductive behaviour, such as climate change, as well as possible negative impacts of the absence of fall reproduction on populations of B. flumineum in the study region.
Improving the rhinomanometry technique using benzoin tincture
Authors: Arslan F , Yıldızoğlu Ü , Durmaz A , Çetinkaya S 
Published: April 2018

AbstractObjective:In order to achieve a faster and more reliable anterior rhinomanometric evaluation, nasal skin was prepared using benzoin tincture solution, which provides simpler and better adhesion of the foam tape to the nasal skin.Method:Two consecutive anterior rhinomanometry measurements were made, one with and one without benzoin tincture application.Results:The average time taken to perform classic foam tape anterior rhinomanometry without benzoin tincture application was 281.32 seconds, and the average coefficients of variation for the right and left passages were 7.48 and 7.59 per cent, respectively. When benzoin tincture was used, the average time taken for completion of the tests was 121.24 seconds, and the average coefficients of variation for the right and left passages were 2.17 and 2.32 per cent.Conclusion:The use of benzoin tincture to clean the nasal skin before placing foam tape shortens the procedure duration and significantly increases test reliability.
Post-operative course prediction during endoscopic sinus surgery in patients with chronic rhinosinusitis
Authors: Tsuzuki K , Hashimoto K , Okazaki K , Sakagami M 
Published: April 2018

AbstractObjective:This study aimed to analyse findings of functional endoscopic sinus surgery to estimate the post-operative course of patients with chronic rhinosinusitis.Methods:From 2007 to 2015, 291 adult patients with bilateral chronic rhinosinusitis, divided into eosinophilic chronic rhinosinusitis (n= 210) and non-eosinophilic chronic rhinosinusitis (n= 81) groups, who underwent primary functional endoscopic sinus surgery were enrolled. Functional endoscopic sinus surgery findings, scored as operating score, were analysed in relation to pre-operative olfactory recognition threshold and sinonasal computed tomography imaging score, as well as post-operative endoscopic appearance.Results:Operating scores in eosinophilic chronic rhinosinusitis were significantly worse than those in non-eosinophilic chronic rhinosinusitis. The anterior ethmoid sinus and superior meatus were predominantly inflamed. Operating score significantly correlated with pre-operative olfaction recognition threshold, computed tomography score and pre-operative endoscopic appearance score. In eosinophilic chronic rhinosinusitis, higher operating scores were related to post-operative deterioration of endoscopic appearance score.Conclusion:The operating score reflects the course following functional endoscopic sinus surgery. Patients with more severe operative findings require longer post-operative treatment.
Factors influencing horizontal gene transfer in the intestine
Authors: Zeng Ximin , Lin Jun 
Published: April 2018

AbstractAntibiotic resistance (AR) is ancient. Use of antibiotics is a selective driving force that enriches AR genes and promotes the emergence of resistant pathogens. It also has been widely accepted that horizontal gene transfer (HGT) occurs everywhere and plays a critical role in the transmission of AR genes among bacteria. However, our understanding of HGT processes primarily build on extensivein vitrostudies; to date, there is still a significant knowledge gap regardingin situHGT events as well as the factors that influence HGT in different ecological niches. This review is focused on the HGT process in the intestinal tract, a ‘melting pot’ for gene exchange. Several factors that potentially influencein vivoHGT efficiency in the intestine are identified and summarized, which include SOS-inducing agents, stress hormones, microbiota and microbiota-derived factors. We highlight recent discoveries demonstrating that certain antibiotics, which are widely used in animal industry, can enhance HGT in the intestine by serving as DNA-damaging, SOS-inducing agents. Despite recent progress, research onin vivoHGT events is still in its infancy. A better understanding of the factors influencing HGT in the intestine is highly warranted for developing effective strategies to mitigate AR in animal production as well as in future agricultural ecosystems.