bluuebunny/crossref_metadata_2025 huggingface dataset:
Plasmonic Implanted Nanogrooves for Optical Beaming
Authors: Daniel Salman , Bawuah Prince
Published: January 2019

Surface plasmon polaritons are electromagnetic surface waves, which, due to their nanoscale nature, are efficiently used for modifying an output of optical field through a metallic nanoslit, e.g., extraordinary optical transmission and beaming of light. Herein, the phenomenon of optical beaming by employing a regular array of semicylinder-shaped grooves around a nanoslit has been investigated based on numerical simulations. By analyzing the behavior of Poynting vectors in near surroundings of the slit, we have successfully demonstrated that grooves which are embedded on the layer at the exit side of the slit produce enhanced directionality of the output light than the unembedded ones. In case of semicylinder-shaped grooves, the calculated intensity of the output beam was 1.5-times, at near and far distances, higher than that of the grating grooves. Our analysis shows that positioning of the groove right at the exit of the slit is crucial for the enhancement of the beaming effect. This is due to the conversion of surface plasmon polaritons into a freely propagating field and the possible excitation of localized surface plasmons because of the presence of nanogroove. Furthermore, the proposed geometries are made of Aluminum, which is a plasmonic material and commonly applied for the fabrication of optical nanostructures. Manipulating of light (beaming, focusing/guiding, and splitting) by nanoslit can be beneficial to several applications such as nano-resolution optical imaging, sensors, and plasmonic circuits.
PERK Signaling Regulates Extracellular Proteostasis of an Amyloidogenic Protein During Endoplasmic Reticulum Stress
Authors: Romine Isabelle C. , Wiseman R. Luke
Published: January 2019

The PERK arm of the unfolded protein response (UPR) regulates cellular proteostasis and survival in response to endoplasmic reticulum (ER) stress. However, the impact of PERK signaling on extracellular proteostasis is poorly understood. We define how PERK signaling influences extracellular proteostasis during ER stress using a conformational reporter of the secreted amyloidogenic protein transthyretin (TTR). We show that inhibiting PERK signaling impairs secretion of destabilized TTR during thapsigargin (Tg)-induced ER stress by increasing its ER retention in chaperone-bound complexes. Interestingly, PERK inhibition increases the ER stress-dependent secretion of TTR in non-native conformations that accumulate extracellularly as soluble oligomers. Pharmacologic or genetic TTR stabilization partially restores secretion of native TTR tetramers. However, PERK inhibition still increases the ER stress-dependent secretion of TTR in non-native conformations under these conditions, indicating that the conformation of stable secreted proteins can also be affected by inhibiting PERK. Our results define a role for PERK in regulating extracellular proteostasis during ER stress and indicate that genetic or aging-related alterations in PERK signaling can exacerbate ER stress-related imbalances in extracellular proteostasis implicated in diverse diseases.
Carbon fiber based electrochemical sensor for sweat cortisol measurement
Authors: Sekar M. , Pandiaraj M. , Bhansali S. , Ponpandian N. , Viswanathan C.
Published: January 2019

This study examines the use of a conductive carbon fiber to construct a flexible biosensing platform for monitoring biomarkers in sweat. Cortisol was chosen as a model analyte. Functionalization of the conductive carbon yarn (CCY) with ellipsoidal Fe2O3 has been performed to immobilize the antibodies specific to cortisol. 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and N-Hydroxysuccinimide (NHS) chemistry has been used to immobilize the antibodies onto the Fe2O3 modified CCY. Crystallinity, structure, morphology, flexibility, surface area, and elemental analysis were studied using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, Field emission scanning electron microscopy with energy dispersive X-ray spectroscopy (FE-SEM/EDS) and Brunauer–Emmett–Teller (BET) analysis. Mechanical properties of the fiber such as tensile strength, young’s modulus have also been investigated. Under optimal parameters, the fabric sensor exhibited a good linearity (r2 = 0.998) for wide a linear range from 1 fg to 1 μg with a detection limit of 0.005 fg/mL for the sensitive detection of cortisol. Repeatability, reliability, reproducibility, and anti-interference properties of the current sensor have been investigated. Detection of cortisol levels in human sweat samples has also been investigated and the results were validated with commercial chemiluminescence immunoassay (CLIA) method.
Effects of transcranial direct current stimulation on the cognitive control of negative stimuli in borderline personality disorder
Authors: Schulze Lars , Grove Maren , Tamm Sascha , Renneberg Babette , Roepke Stefan
Published: January 2019

Borderline personality disorder (BPD) is characterized by impairments in the cognitive control of negative information. These impairments in cognitive control are presumably due to blunted activity of the dorsolateral prefrontal cortex (dlPFC) along with enhanced activations of the limbic system. However, the impact of an excitatory stimulation of the dlPFC still needs to be elucidated. In the present study, we therefore assigned 50 patients with BPD and 50 healthy controls to receive either anodal or sham stimulation of the right dlPFC in a double-blind, randomized, between-subjects design. Participants performed a delayed working memory task with a distracter period during which a grey background screen, or neutral, or negative stimuli were presented. This experimental paradigm was first evaluated in a pilot study with 18 patients with BPD and 19 healthy controls. In both studies, patients with BPD showed an impairment of cognitive control when negative distracters were presented in the delay period of a working memory task. However, excitatory stimulation of the right dlPFC did not ameliorate cognitive control of negative stimuli in BPD, which raises questions about the specific role of the right dlPFC for the understanding of BPD psychopathology. Methodological limitations are discussed.
In vivo assessment of increased oxidation of branched-chain amino acids in glioblastoma
Authors: Suh Eul Hyun , Hackett Edward P. , Wynn R. Max , Chuang David T. , Zhang Bo , Luo Weibo , Sherry A. Dean , Park Jae Mo
Published: January 2019

Altered branched-chain amino acids (BCAAs) metabolism is a distinctive feature of various cancers and plays an important role in sustaining tumor proliferation and aggressiveness. Despite the therapeutic and diagnostic potentials, the role of BCAA metabolism in cancer and the activities of associated enzymes remain unclear. Due to its pivotal role in BCAA metabolism and rapid cellular transport, hyperpolarized13C-labeled α-ketoisocaproate (KIC), the α-keto acid corresponding to leucine, can assess both BCAA aminotransferase (BCAT) and branched-chain α-keto acid dehydrogenase complex (BCKDC) activities via production of [1-13C]leucine or13CO2(and thus H13CO3−), respectively. Here, we investigated BCAA metabolism of F98 rat glioma modelin vivousing hyperpolarized13C-KIC. In tumor regions, we observed a decrease in13C-leucine production from injected hyperpolarized13C-KIC via BCAT compared to the contralateral normal-appearing brain, and an increase in H13CO3−, a catabolic product of KIC through the mitochondrial BCKDC. A parallelex vivo13C NMR isotopomer analysis following steady-state infusion of [U-13C]leucine to glioma-bearing rats verified the increased oxidation of leucine in glioma tissue. Both thein vivohyperpolarized KIC imaging and the leucine infusion study indicate that KIC catabolism is upregulated through BCAT/BCKDC and further oxidized via the citric acid cycle in F98 glioma.
A search for tiny dragons (Dracunculus medinensis third-stage larvae) in aquatic animals in Chad, Africa
Authors: Cleveland Christopher A. , Eberhard Mark L. , Thompson Alec T. , Garrett Kayla B. , Swanepoel Liandrie , Zirimwabagabo Hubert , Moundai Tchonfienet , Ouakou Philippe T. , Ruiz-Tiben Ernesto , Yabsley Michael J.
Published: January 2019

Dracunculus medinensis, or human Guinea worm (GW), causes a painful and debilitating infection. The global Guinea Worm Eradication Program (GWEP) has successfully reduced human GW cases from 3.5 million in 21 countries in 1986 to only 30 cases in three remaining countries in 2017. Since 2012, an increase in GW infections in domestic dogs, cats and baboons has been reported. Because these infections have not followed classical GW epidemiological patterns resulting from water-borne transmission, it has been hypothesized that transmission occurs via a paratenic host. Thus, we investigated the potential of aquatic animals to serve as paratenic hosts forD.medinensisin Chad, Africa. During three rainy and two dry season trips we detected no GW larvae in 234 fish, two reptiles and two turtles; however, seven GW larvae were recovered from 4 (1.4%) of 276 adult frogs. These data suggest GW infections may occur from ingestion of frogs but the importance of this route is unknown. Additional studies are needed, especially for other possible routes (e.g., ingestion of fish intestines that were recently shown to be a risk). Significantly, 150 years after the life cycle ofD.medinensiswas described, our data highlights important gaps in the knowledge of GW ecology.
MOF-derived Materials for Extremely Efficient Electrocatalysis
Authors: Song Zhongxin , Zhang Lei , Zheng Matthew , Sun Xueliang
Published: January 2019

Metal–organic frameworks (MOFs) represent a class of crystalline porous materials constructed by periodic arranging of metal clusters and organic ligands. Their crystalline nature, structural diversity, and permanent porosity enable MOFs to be a highly versatile platform for various potential applications. This chapter will review recent achievements of MOF-based materials in electrocatalysis toward the reactions of oxygen reduction, water splitting, and CO2 reduction. Typical MOF-derived micro/nano-structures and the specific active sites involved in determining catalytic activity are particularly emphasized. Finally, the major challenges and research opportunities, future trends, and prospects associated with MOF-derived materials for electrocatalysis are discussed.
Intercalation-based Layered Materials for Rechargeable Sodium-ion Batteries
Authors: Kumar Das Bijoy , Gopalan R.
Published: January 2019

Rechargeable sodium-ion batteries (SIBs) are becoming more popular day-by-day as an alternative to lithium-ion batteries (LIBs) due to their low cost and on par high specific energy. However, a lack of suitable electrode materials is a major problem with its commercialization. Layered materials are the most promising electrodes and are extensively used for SIBs. In this chapter, a brief history of SIB development and its working principle are discussed. In addition, the electrochemical reactions, mechanism of structure evolution, stability and challenges of layered electrode materials are also discussed. The full cell developments of SIBs based on layered electrode materials are briefly mentioned.
Lyophilization of chemiluminescent substrate reagents for high-sensitive microchannel-based lateral flow assay (MLFA) in point-of-care (POC) diagnostic system
Authors: Ghosh Sthitodhi , Ahn Chong H.
Published: January 2019

A new method towards successful lyophilization and reconstitution of chemiluminescent substrate while restoring the substrate functionality is reported in this work.
New method for detection of T4 polynucleotide kinase phosphatase activity through isothermal EXPonential amplification reaction
Authors: Chen Huinan , Wang Zihan , Chen Xu , Lou Kai , Sheng Anzhi , Chen Tianshu , Chen Guifang , Zhang Juan
Published: January 2019

A new method has been developed for the sensitive detection of T4 PNKP activity based on the isothermal EXPonential amplification reaction.
Stoichiometry-controlled inversion of circularly polarized luminescence in co-assembly of chiral gelators with an achiral tetraphenylethylene derivative
Authors: Li Pengyu , Lü Baozhong , Han Dongxue , Duan Pengfei , Liu Minghua , Yin Meizhen
Published: January 2019

A supramolecular circularly polarized luminescence (CPL) system was constructed based on the co-gelation of an achiral tetraphenylethylene derivative and chiral organic gelators of glutamic acid in chloroform. And the handedness of CPL can be inverted by stoichiometric ratio.
An intramolecular C(sp3)–H imination using PhI–mCPBA
Authors: Bose Anima , Maiti Saikat , Sau Sudip , Mal Prasenjit
Published: January 2019

Development of sustainable methods for the activation of less reactive undirected C(sp3)–H bonds is challenging but desired in organic synthesis. The present manuscript demonstrates selective activation of acidic C(sp3)–H groups for a dehydrogenative C–H imination reaction by 4H elimination using PhI (10 mol%)–mCPBA as an organocatalyst.
Electrochemical oxidative C–H/N–H cross-coupling for C–N bond formation with hydrogen evolution
Authors: Yu Yi , Yuan Yong , Liu Huilin , He Min , Yang Mingzhu , Liu Pan , Yu Banying , Dong Xuanchi , Lei Aiwen
Published: January 2019

We herein report an electrochemical oxidative C–H/N–H cross-coupling reaction in an undivided cell.
A novel basic matrix protein of Pinctada fucata, PNU9, functions as inhibitor during crystallization of aragonite
Authors: Kong Jingjing , Liu Chuang , Yang Dong , Yan Yi , Chen Yan , Liu Yangjia , Zheng Guilan , Xie Liping , Zhang Rongqing
Published: January 2019

The injection of dsRNA of PNU9 could lead to the overgrowth of nacreous lamellas and the matrix membrane.
Effect of trap states on photocatalytic properties of boron-doped anatase TiO2 microspheres studied by time-resolved infrared spectroscopy
Authors: Du Yijie , Wang Zhuan , Chen Hailong , Wang Hao-Yi , Liu Gang , Weng Yuxiang
Published: January 2019

The photocatalytic hydrogen and oxygen evolution switching effect in the water splitting of two boron-doped anatase TiO2 microspheres was elucidated from the viewpoint of trap states.
A computational study on ligand assisted vs. ligand participation mechanisms for CO2 hydrogenation: importance of bifunctional ligand based catalysts
Authors: Mandal Shyama Charan , Rawat Kuber Singh , Pathak Biswarup
Published: January 2019

Bifunctional aminomethyl based Mn(i) catalysts favour a revised Noyori type mechanism for the CO2 hydrogenation reaction.
Towards direct enzyme wiring: a theoretical investigation of charge carrier transfer mechanisms between glucose oxidase and organic semiconductors
Authors: Bagdžiūnas Gintautas , Ramanavičius Arūnas
Published: January 2019

We have evaluated charge transfer between enzyme glucose oxidase (GOx) and organic semiconductors, both of which were applied in the design of amperometric glucose biosensors.
Evaluation of spin-flip scattering in chirality-induced spin selectivity using the Riccati equation
Authors: Nürenberg Daniel , Zacharias Helmut
Published: January 2019

We apply a model to search for spin-flips in spin-selective electron transport in chiral molecules.
Three-dimensionally patterned Ag–Pt alloy catalyst on planar Si photocathodes for photoelectrochemical H2 evolution
Authors: Lim Sung Yul , Ha Kyungyeon , Ha Heonhak , Lee Soo Youn , Jang Min Seok , Choi Mansoo , Chung Taek Dong
Published: January 2019

Three-dimensionally patterned Ag–Pt alloy catalyst improves a junction quality of electrolyte/SiOx/Si photocathodes for H2 evolution.
Underpinning transport phenomena for the patterning of biomolecules
Authors: Pereiro Iago , Cors Julien F. , Pané Salvador , Nelson Bradley J. , Kaigala Govind V.
Published: January 2019

Factoring transport kinetics into patterning of biomolecules will be key to enhance precision and quantitation in surface assays for biology and medicine.
Switching the substrate preference of fungal aryl-alcohol oxidase: towards stereoselective oxidation of secondary benzyl alcohols
Authors: Serrano Ana , Sancho Ferran , Viña-González Javier , Carro Juan , Alcalde Miguel , Guallar Victor , Martínez Angel T.
Published: January 2019

Using PELE computational simulations the ability to deracemize secondary benzylic alcohols was introduced (by I500M/F501W double mutation) in stereoselective AAO.
Recent advances in self-assembled amidinium and guanidinium frameworks
Authors: White Nicholas G.
Published: January 2019

Recent advances in amidinium and guanidinium-containing hydrogen-bonded framework materials are highlighted.
p-Type dye-sensitized solar cells based on pseudorotaxane mediated charge-transfer
Authors: Bouwens Tessel , Mathew Simon , Reek Joost N. H.
Published: January 2019

We report the synthesis of dyes with recognition sites that facilitate pseudorotaxane formation and implementation into a p-type DSSC where the ring acts as a redox mediator.
How charges separate: correlating disorder, free energy, and open-circuit voltage in organic photovoltaics
Authors: Mroczek Débora P. , Lankevich Vladimir , Bittner Eric R.
Published: January 2019

In this paper, we discuss our recent efforts to correlate the role of density of states, entropy, and configurational and energetic disorder to the open-circuit voltage, VOC, of model type-II organic polymer photovoltaics.
Probing solvation and reactivity in ionized polycyclic aromatic hydrocarbon–water clusters with photoionization mass spectrometry and electronic structure calculations
Authors: Xu Bo , Stein Tamar , Ablikim Utuq , Jiang Ling , Hendrix Josie , Head-Gordon Martin , Ahmed Musahid
Published: January 2019

Synchrotron based mass spectrometry coupled with theoretical calculations provides insight into polycyclic aromatic hydrocarbon water interactions.
Stevioside attenuates isoproterenol-induced mouse myocardial fibrosis through inhibition of the myocardial NF-κB/TGF-β1/Smad signaling pathway
Authors: Wang Jia , Shen Wei , Zhang Jun-Yan , Jia Chang-Hao , Xie Mei-Lin
Published: January 2019

Stevioside attenuates isoproterenol-induced mouse myocardial fibrosis, and its mechanisms are associated with the increments of antioxidant ability, PPARγ activation, and Smad7 expression, which cause a synergistic inhibition of the NF-κB/TGF-β1/Smad signaling pathway.
Influence of daily fresh pear consumption on biomarkers of cardiometabolic health in middle-aged/older adults with metabolic syndrome: a randomized controlled trial
Authors: Navaei Negin , Pourafshar Shirin , Akhavan Neda S. , Litwin Nicole S. , Foley Elizabeth M. , George Kelli S. , Hartley Shannon C. , Elam Marcus L. , Rao Sangeeta , Arjmandi Bahram H. , Johnson Sarah A.
Published: January 2019

Previous research suggests potential for fresh pears as a functional food for promoting cardiometabolic health.
Protein–polyphenol interactions enhance the antioxidant capacity of phenolics: analysis of rice glutelin–procyanidin dimer interactions
Authors: Dai Taotao , Chen Jun , McClements David Julian , Hu Peng , Ye Xiaoqin , Liu Chengmei , Li Ti
Published: January 2019

Rice glutelin and procyanidins are often used in functional foods as sources of plant-based proteins and polyphenols, respectively, but little is currently known about the interactions between them.
Engineering enzymatic cascades for the efficient biotransformation of eugenol and taxifolin to silybin and isosilybin
Authors: Lv Yongkun , Xu Sha , Lyu Yunbin , Zhou Shenghu , Du Guocheng , Chen Jian , Zhou Jingwen
Published: January 2019

A highly efficient enzymatic cascade, which does not produce any harmful byproduct, was engineered for the biotransformation of eugenol and taxifolin to silybin and isosilybin.
Multifunctional luminescent coordination polymers based on tricarboxylic acid for the detection of 2,4-dinitrophenol and iron(iii) and aluminum(iii) ions
Authors: Arici Mürsel
Published: January 2019

2D Zn(ii)-coordination polymer exhibited highly sensitive and selective detection towards DNP, Fe3+ and Al3+ ions in the presence of other interfering compounds through luminescence quenching and enhancement, respectively.
Revisiting the fluoride binding behaviour of dipyrrolylquinoxaline in aqueous medium: a copper ion mediated approach
Authors: Das Rituraj , Sarma Plaban J. , Borborah Abhishek , Bharati Sudhangshu P. , Mahanta Sanjeev P.
Published: January 2019

An ion detection methodology employing synergistic interaction between copper(ii) ions and fluoride with 2,3-dipyrrol-2′-yl-quinoxaline (SR1) is investigated with a particular target to detect fluoride in an aqueous environment.
A new class of supramolecular liquid crystals derived from azo calix[4]arene functionalized 1,3,4-thiadiazole derivatives
Authors: Sharma Vinay S. , Shah Akshara P. , Sharma Anuj S.
Published: January 2019

A new class of bowl-shaped supramolecular liquid crystals (LCs) is described derived from calix[4]arene substituted with 1,3,4-thiadiazole derivatives, inbuilt with Schiff base and ester on the lower rim and with an azo group on the upper rim with an alkyl side chain (–OC3H7, –OC8H17).
A novel approach to white-light emission using a single fluorescent urea derivative and fluoride
Authors: Takahashi Masaki , Enami Yusuke , Ninagawa Hayato , Obata Makoto
Published: January 2019

First observation of white fluorescence using a single fluorescent urea derivative and fluoride.
A colorimetric and “off–on” fluorescent Pd2+ chemosensor based on a rhodamine-ampyrone conjugate: synthesis, experimental and theoretical studies along with in vitro applications
Authors: Mondal Sanchita , Manna Saikat Kumar , Pathak Sudipta , Masum Abdulla Al , Mukhopadhyay Subrata
Published: January 2019

We successfully designed and developed a rhodamine based “turn-on” chemosensor L for the detection of Pd2+ ions down to 1.19 × 10−5 M (11.9 μM).
Solid-state growth of Ag nanowires and analysis of the self-growing process on a bio-polymer chitosan film
Authors: Chevva Harish , Chandran Rakkiyappan , LaJeunesse Dennis , Wei Jianjun
Published: January 2019

This research is the first to report the growth mechanism of AgNWs in the solid state on a chitosan polymer film with respect to factors such as oxidative etching, Cl− ions and time.
Synergistic effect between copper and different metal oxides in the selective hydrogenolysis of glucose
Authors: Liu Chengwei , Zhang Zhaonan , Zhai Xuefeng , Wang Xianzhou , Gui Jianzhou , Zhang Chenghua , Zhu Yulei , Li Yongwang
Published: January 2019

The coordination of copper and different acid/basic sites could promote the selective hydrogenolysis of glucose to polyols.
Multiscale honeycomb-structured activated carbon obtained from nitrogen-containing mandarin peel: high-performance supercapacitors with significant cycling stability
Authors: Chinnadurai Deviprasath , Kim Hee-Je , Karupannan Senthil , Prabakar Kandasamy
Published: January 2019

Electrochemical kinetics on symmetrical supercapacitors fabricated from mandarin peel biomass-activated carbon.
Novel phenyl-substituted pyrazinoporphyrazine complexes of rare-earth elements: optimized synthetic protocols and physicochemical properties
Authors: Kosov A. D. , Dubinina T. V. , Borisova N. E. , Ivanov A. V. , Drozdov K. A. , Trashin S. A. , De Wael K. , Kotova M. S. , Tomilova L. G.
Published: January 2019

Novel synthetic protocols based on both template and direct methods were developed for phenyl-substituted pyrazinoporphyrazine complexes of rare-earth elements.
A versatile strategy to fabricate magnetic dummy molecularly imprinted mesoporous silica particles for specific magnetic separation of bisphenol A
Authors: Wang Yafei , Tian Mengjie , Yu Kai , Li Leyan , Zhang Zulei , Li Lei
Published: January 2019

m-DMIMSP showed an ordered mesoporous structure, favorable magnetic property, good accessibility and affinity, and excellent binding selectivity towards BPA.
Multi-layer graphene as a selective detector for future lung cancer biosensing platforms
Authors: Kovalska E. , Lesongeur P. , Hogan B. T. , Baldycheva A.
Published: January 2019

Multilayer graphene can be used to detect volatile organic compounds, with enhanced selectivity and sensitivity through surface patterning.
Two-dimensional honeycomb borophene oxide: strong anisotropy and nodal loop transformation
Authors: Zhong Chengyong , Wu Weikang , He Junjie , Ding Guangqian , Liu Yi , Li Dengfeng , Yang Shengyuan A. , Zhang Gang
Published: January 2019

Strong anisotropy and a nodal loop in honeycomb borophene oxide and its topological transformation under strain.
The roles of Lewis acidic additives in organotransition metal catalysis
Authors: Becica Joseph , Dobereiner Graham E.
Published: January 2019

We present recent advances in prominent organotransition metal-catalysed reactions in which Lewis acid cocatalysts are employed to increase catalyst activity or selectivity. The roles of Lewis acids are discussed.
Effects of water absorption of soybean seed on the quality of soymilk and the release of flavor compounds
Authors: Li Xingfei , Liu Xu , Hua Yufei , Chen Yeming , Kong Xiangzhen , Zhang Caimeng
Published: January 2019

The water absorption of soybeans during soaking is directly related to the quality characteristics and the flavor properties of soybeans for processing.
Microfiltration of raw soy sauce: membrane fouling mechanisms and characterization of physicochemical, aroma and shelf-life properties
Authors: Guo Hao , Huang Jun , Zhou Rongqing , Wu Chongde , Jin Yao
Published: January 2019

Membrane fouling mechanisms and characterization of physicochemical, aroma and shelf-life properties of soy sauce subjected to refinement.
Understanding thermal decomposition kinetics of flame-retardant thermoset polylactic acid
Authors: Li Yihan , Qiang Zhe , Chen Xie , Ren Jie
Published: January 2019

The Flynn–Wall–Ozawa method was applied to study the local activation energy of flame retardant thermoset PLA, and the results showed that with an increase of conversion of thermal degradation, the local activation energy was increased slowly.
Bi-functional titanium-polydopamine-zinc coatings for infection inhibition and enhanced osseointegration
Authors: Wang Lei , Shang Xifu , Hao Yuefeng , Wan Guoyang , Dong Lijun , Huang Degang , Yang Xin , Sun Junying , Wang Qiang , Zha Guochun , Yang Xing
Published: January 2019

The ideal orthopedic implant coating is expected to both inhibit microbial infection and promote osseointegration.
Comparison of hypoglycemic effects of ripened pu-erh tea and raw pu-erh tea in streptozotocin-induced diabetic rats
Authors: Ding Qianzhi , Zheng Wei , Zhang Bowei , Chen Xiaojuan , Zhang Jie , Pang Xu , Zhang Yong , Jia Dexian , Pei Surui , Dong Yuesheng , Ma Baiping
Published: January 2019

Ripened Pu-erh tea showed stronger anti-diabetic effect than raw Pu-erh tea and showed probiotic role to some beneficial gut bacteria.
Convenient pH-responsive removal of Acid Black 1 by green l-histidine/iron oxide magnetic nanoadsorbent from water: performance and mechanistic studies
Authors: Qurrat-ul-Ain Qurrat-ul-Ain , Khatoon Jaweria , Shah Muhammad Raza , Malik Muhammad Imran , Khan Iffat Abdul Tawab , Khurshid Sumaira , Naz Raheela
Published: January 2019

Effective and eco-friendly separation of Acid Black 1 dye from water by electrostatic adsorption onto reusable Histidine-Fe3O4 nanoparticles, credited to their pH-responsiveness.
Production of rhamnolipids with different proportions of mono-rhamnolipids using crude glycerol and a comparison of their application potential for oil recovery from oily sludge
Authors: Zhao Feng , Jiang Hao , Sun Huichun , Liu Chang , Han Siqin , Zhang Ying
Published: January 2019

Oil recovery from oily sludge is positively related to the proportion of mono-rhamnolipids.
Effectively enhanced structural stability and electrochemical properties of LiNi0.5Mn1.5O4cathode materialsviapoly-(3,4-ethylenedioxythiophene)-in situcoated for high voltage Li-ion batteries
Authors: Liu JinFeng , Chen YuFang , Xu Jing , Sun WeiWei , Zheng ChunMan , Li YuJie
Published: January 2019

PEDOT coating on LNMO surface effectively improves it's the crystal structure stability and electrochemical properties.
Exploring the temperature effect on hole transport properties in organic bulk heterojunctions
Authors: Li Bixin , Zhang Shiyang , Li Xianglin
Published: January 2019

The hole transport in organic bulk heterojunctions shows a transition from a mobility model to a trapping model with increasing temperature.
Recent progress in flexible non-lithium based rechargeable batteries
Authors: Liu Yang , Sun Zehang , Tan Ke , Denis Dienguila Kionga , Sun Jinfeng , Liang Longwei , Hou Linrui , Yuan Changzhou
Published: January 2019

This review elaborately summarizes the latest progresses in flexible non-lithium rechargeable batteries including flexible electrode construction, separators, solid electrolyte synthesis, full battery design, packaging and optimization.
Electro-assisted selective uptake/release of phosphate using a graphene oxide/MgMn-layered double hydroxide composite
Authors: Lai Yi-Ting , Liu Wei-Ting , Chen Lih-Juann , Chang Min-Chao , Lee Chi-Young , Tai Nyan-Hwa
Published: January 2019

This study demonstrates a continuously tunable ultra-efficient phosphate uptake-release technique with electro-assistance using the proposed GO/MgMn-LDH-300 composites electrode.
Biomass-derived solar-to-thermal materials: promising energy absorbers to convert light to mechanical motion
Authors: Luo Xiongfei , Ma Chunhui , Chen Zhijun , Zhang Xinyue , Niu Na , Li Jian , Liu Shouxin , Li Shujun
Published: January 2019

Biomass-derived solar-to-thermal materials were developed and utilized for driving a Stirling engine.
Insight into different-microstructured ZnO/graphene-functionalized separators affecting the performance of lithium–sulfur batteries
Authors: Shi Nianxiang , Xi Baojuan , Feng Zhenyu , Wu Fangfang , Wei Denghu , Liu Jing , Xiong Shenglin
Published: January 2019

A multifunctional separator composed of different dimensional ZnO and graphene is fabricatedviaa vacuum filtration method, which can provide sufficient active sites to adsorb polysulfides, thus enhancing the cycling stability and rate performance of lithium–sulfur batteries.
Hydrogel hybrid porcine pericardium for the fabrication of a pre-mounted TAVI valve with improved biocompatibility
Authors: Guo Gaoyang , Jin Wanyu , Jin Linhe , Chen Liang , Lei Yang , Wang Yunbing
Published: January 2019

Hydrogel/porcine pericardium hybrid provides a more biocompatible biomaterial for the pre-mounted TAVI valve.
Synergistic antitumor efficacy of hybrid micelles with mitochondrial targeting and stimuli-responsive drug release behavior
Authors: Chen Zhoujiang , Zhang Zhanlin , Chen Maohua , Xie Songzhi , Wang Tao , Li Xiaohong
Published: January 2019

The term synergism means that the overall therapeutic benefits should be greater than the sum of the effects of individual agents and that the optimal therapeutic efficacy can be achieved at reduced doses.
Self-constructing giant vesicles for mimicking biomembrane fusion and acting as enzymatic catalysis microreactors
Authors: Liu Shengda , An Guo , Xu Jiayun , Li Xiumei , Wang Tingting , Fan Xiaotong , Hou Chunxi , Luo Quan , Liu Junqiu , Han Yanqiu
Published: January 2019

HP5 vesicles were constructed to mimic the process of biomembrane fusion, and they acted as biocatalysis microreactors induced by fusion.
Synthesis, self-assembly behaviours and multivalent glycosidase inhibition effects of a deoxynojirimycin modified perylene bisimide derivative
Authors: Li Juan-Juan , Wang Ke-Rang , Li Ren-Feng , Yang Jian-Xing , Li Min , Zhang Hong-Xin , Cao Zhi-Ran , Li Xiao-Liu
Published: January 2019

A self-assembled multivalent glycosidase inhibitor based on perylene bisimide-deoxynojirimycin conjugates was constructed, inhibited α-mannosidase and exhibited a Ki value of 38 nM, increased approximately 2763-fold compared with the control drug (miglitol).
Template synthesis of defect-rich MoS2-based assemblies as electrocatalytic platforms for hydrogen evolution reaction
Authors: Kagkoura Antonia , Tzanidis Iordanis , Dracopoulos Vassilios , Tagmatarchis Nikos , Tasis Dimitrios
Published: January 2019

Template-assisted growth of defect-rich MoS2 nanostructures gave rise to enhanced hydrogen evolution reaction activity.
Bis(6-diphenylphosphinoacenaphth-5-yl)telluride as a ligand toward coinage metal chlorides
Authors: Do Truong Giang , Hupf Emanuel , Lork Enno , Mebs Stefan , Beckmann Jens
Published: January 2019

The nature of the Te–Cu and Te–Ag interactions in the complexes (6-Ph2P-Ace-5-)2Te·CuCl and (6-Ph2P-Ace-5-)2Te·AgCl was investigated.
Correction: Protic additives determine the pathway of CdSe nanocrystal growth
Authors: Kirkwood Nicholas , Boldt Klaus
Published: January 2019

Correction for ‘Protic additives determine the pathway of CdSe nanocrystal growth’ by Klaus Boldt et al., Nanoscale, 2018, 10, 18238–18248.
Photochemical benzylic bromination in continuous flow using BrCCl3 and its application to telescoped p-methoxybenzyl protection
Authors: Otake Yuma , Williams Jason D. , Rincón Juan A. , de Frutos Oscar , Mateos Carlos , Kappe C. Oliver
Published: January 2019

Photochemical benzylic bromination in flow using BrCCl3, which is compatible with electron-rich aromatics, allowing in situ p-methoxybenzyl bromide formation and PMB-protection.
Achieving efficient and robust catalytic reforming on dual-sites of Cu species
Authors: Ma Kui , Tian Ye , Zhao Zhi-Jian , Cheng Qingpeng , Ding Tong , Zhang Jing , Zheng Lirong , Jiang Zheng , Abe Takayuki , Tsubaki Noritatsu , Gong Jinlong , Li Xingang
Published: January 2019

This paper describes how Cu+ species act as electrophilic sites to facilitate the adsorption and activation of formate and restrict the Ostwald ripening of Cu species, leading to an efficient and robust steam reforming of bio-DME.
A dynamic preferred direction model for the self-organization dynamics of bacterial microfluidic pumping
Authors: Svenšek Daniel , Pleiner Harald , Brand Helmut R.
Published: January 2019

We set up a continuum model capable of describing the pumping self-organization mechanism of the bacteria and quantifying it to the extent that an agreement with the experimentally observed channel width dependence of the pumping is reached.
A Li–O2 battery cathode with vertical mass/charge transfer pathways
Authors: Huang Zhaoming , Deng Zhe , Shen Yue , Chen Wanqi , Liu Wei , Xie Meilan , Li Yankai , Huang Yunhui
Published: January 2019

An oxygen cathode with a rolled vertical CNT film configuration is proposed for advanced Li–O2 batteries.
KRAS-mutant colon cancer cells respond to combined treatment of ABT263 and axitinib
Authors: Wang Guihua , Huang Ying , Wu Zhipeng , Zhao Chunmei , Cong Hui , Ju Shaoqing , Wang Xudong
Published: January 2019

Significant challenges to develop selective and effective pharmacological inhibitors for important oncoproteins like RAS continue impeding the success to treat cancers driven by such mutations. In the present study, the ABT263 and axitinib combination imposed synergistic effects on RAS-mutant colon cancer cells. The combination inhibited in vitro and in vivo growth of the cancer cells by enhancing apoptosis. Furthermore, AKT and Wnt/β-catenin signaling pathways were slightly down-regulated by the combination in KRAS-mutant colon cancer cells. The current results indicate that oncogene addiction can be targeted for therapy in colon cancer cells harboring the RAS-mutant. Therefore, targeting oncogene addiction can be a viable strategy for treating refractory cancers driven by important oncogenes, such as KRAS, which are otherwise difficult to be targeted by small molecules.
Design and development of angularly stable and polarisation rotating FSS radome based on substrate‐integrated waveguide technology
Authors: Varikuntla Kushna Kanth , Singara Velu Raghavan
Published: January 2019

In this paper, the design of a novel polarisation rotating frequency selective surface (FSS) radome is presented based on substrate integrated waveguide (SIW) technology. The proposed radome consists of an FSS core with Y‐shaped slots on either side of the substrate and surrounded by metallic vias. The primary function of the core is to select the linear polarisation from the impinging electromagnetic (EM) wave and to rotate the wave into 90° clockwise direction in the X‐band regime. The radome structure shows a relative bandwidth of 13.2% from 9.2 GHz to 10.5 GHz with impedance matching better than −10 dB and the insertion loss (IL) better than 0.5 dB. The proposed structure shows very stable resonance performance with sharp band edge characteristics compared to the existing FSS radomes. Also, the conformal analysis of the proposed structure has been carried out to study its behaviour for real‐time radome applications. Finally, to prove the efficacy of the proposed structure, a prototype has fabricated and measured its performance in a free space measurement setup. A good agreement is observed between the experimental and simulated results. Furthermore, the conversion of E‐field pattern to H‐field pattern and vice‐versa is proved from the experimental verification.
Cognitive radar antenna selection via deep learning
Authors: Elbir Ahmet M. , Mishra Kumar Vijay , Eldar Yonina C.
Published: January 2019

Direction‐of‐arrival (DoA) estimation of targets improves with the number of elements employed by a phased array radar antenna. Since larger arrays have high associated cost, area and computational load, there is a recent interest in thinning the antenna arrays without loss of far‐field DoA accuracy. In this context, a cognitive radar may deploy a full array and then select an optimal subarray to transmit and receive the signals in response to changes in the target environment. Prior works have used optimisation and greedy search methods to pick the best subarrays cognitively. In this study, deep learning is leveraged to address the antenna selection problem. Specifically, they construct a convolutional neural network (CNN) as a multi‐class classification framework, where each class designates a different subarray. The proposed network determines a new array every time data is received by the radar, thereby making antenna selection a cognitive operation. Their numerical experiments show that the proposed CNN structure provides 22% better classification performance than a support vector machine and the resulting subarrays yield 72% more accurate DoA estimates than random array selections.
Artificial neural network modelling of cold‐crack resistance of high strength low alloy steel 950A
Authors: Manivelmuralidaran Velumani , Senthilkumar Krishnasamy
Published: January 2019

The objective of the study is to predict the cold cracking resistance of high strength low alloy 950A welded joints using an artificial neural network (ANN) model. A bead on plate welding is carried out using the gas metal arc welding process. The identified process parameters for the ANN are preheating temperature, oxide particle content, and heat input. The impact strength of the weld metal is considered as the output parameter. A feed‐forward back propagation model with ten neurons in the hidden layer is developed to predict the impact strength of the weld metal. The neural network model is created, trained, and tested with a set of experimental data. The proposed model correctly predicted the impact strength of the given input parameters. The predicted value of the impact strength is in agreement with the experimental data. The error percentage between the predicted and observed values is <5% and the root mean square error value is 2.2%. Sensitivity analysis is performed to identify the significance of input parameters. It is evident that the preheating temperature contributes 50.04%, oxide particles content contributes 37.15%, and heat input contributes 12.81% to impact strength.
State‐variable and cyclic‐averaging analysis of bidirectional CLLC resonant converters
Authors: Farias Martins Lais , Stone David A. , Foster Martin P.
Published: January 2019

The study proposes the application of state variable and cyclic‐averaging modelling techniques for analysis of bidirectional, dual active bridge, CLLC resonant converters. The techniques are applied for converters operating under single phase‐shift modulation in forward and reverse modes and the equation description is obtained for both models. The design of the converter is presented and the simulation results obtained are compared to a Spice‐based simulation to verify the accuracy of the proposed models. Results show the models are suitable to represent the behaviour of CLLC converters under single phase‐shift modulation. In addition, when using the cyclic‐averaging technique integration is not required to solve the model, which results in a considerably rapid analysis when compared to the execution times of state variable and Spice‐based models.
Meteoroid-stream complex originating from comet 2P/Encke
Authors: Tomko D. , Neslušan L.
Published: January 2019

Aims. We present a study of the meteor complex of the short-period comet 2P/Encke.

Methods. For five perihelion passages of the parent comet in the past, we modeled the associated theoretical stream. Specifically, each of our models corresponds to a part of the stream characterized with a single value of the evolutionary time and a single value of the strength of the Poynting–Robertson effect. In each model, we follow the dynamical evolution of 10 000 test particles via a numerical integration. The integration was performed from the time when the set of test particles was assumed to be ejected from the comet’s nucleus up to the present. At the end of the integration, we analyzed the mean orbital characteristics of those particles that approached the Earth’s orbit, and thus created a meteor shower or showers. Using the mean characteristics of the predicted shower, we attempted to select its real counterpart from each of five considered databases (one photographic, three video, and one radio-meteor). If at least one attempt was successful, the quality of the prediction was evaluated.

Results. The modeled stream of 2P approaches the Earth’s orbit in several filaments with the radiant areas grouped in four cardinal directions of ecliptical showers. These groups of radiant areas are situated symmetrically with respect to the apex of the Earth’s motion around the Sun. Specifically, we found that showers #2, #17, #156, #172, #173, #215, #485, #624, #626, #628, #629, #632, #634, #635, #636, and #726 in the IAU-MDC list of all showers are dynamically related to 2P. In addition, we found five new 2P-related showers in the meteor databases considered.
Extended stellar systems in the solar neighborhood
Authors: Meingast Stefan , Alves João , Fürnkranz Verena
Published: January 2019

We report the discovery of a large, dynamically cold, coeval stellar stream that is currently traversing the immediate solar neighborhood at a distance of only 100 pc. The structure was identified in a wavelet decomposition of the 3D velocity space of all stars within 300 pc of the Sun. Its members form a highly elongated structure with a length of at least 400 pc, while its vertical extent measures only about 50 pc. Stars in the stream are not isotropically distributed but instead form two parallel lanes with individual local overdensities, that may correspond to a remnant core of a tidally disrupted cluster or OB association. Its members follow a very well-defined main sequence in the observational Hertzsprung–Russel diagram and also show a remarkably low 3D velocity dispersion of only 1.3 km s−1. These findings strongly suggest a common origin as a single coeval stellar population. An extrapolation of the present-day mass function indicates a total mass of at least 2000 M⊙, making it larger than most currently known clusters or associations in the solar neighborhood. We estimated the age of the stream to be around 1 Gyr based on a comparison with a set of isochrones and giant stars in our member selection and find a mean metallicity of [Fe/H] = −0.04. This structure may very well represent the Galactic disk counterpart to the prominent stellar streams observed in the Milky Way halo. As such, it constitutes a new valuable probe to constrain the Galaxy’s mass distribution.
Research on the Influence of Piston Constraint on the Temperature Field of Multi-disc Clutch
Authors: Zhang Jie , Zhang Tieshan
Published: January 2019

The two-dimensional finite element model of multi-disc clutch friction pair was established by Abaqus simulation software, and the contact pressure of the friction surface under different piston constraints was calculated and analyzed. Considering contact pressure as the main heat-generating factor, the two-dimensional heat conduction process was numerically discretized by the implicit difference method. Then the temperature model of the multi-disc clutch friction pair was programmed in Matlab. The bench test verified the correctness of the temperature model. It is found that the temperature field between components is different and shows uneven distribution under the actual constraint. The local temperature of the component near the concentrated load is the highest, in which the radial temperature difference is the largest. The arrangement in which the piston pressure is concentrated in middle diameter produces the lowest temperature and the smallest radial temperature difference, which can effectively avoid thermal deformation of the component due to uneven temperature distribution.
Hydroponic System with Automated Hydrolysis Using Renewable Energy Self-Sustainable
Authors: Jaimes Felipe , Collazos Brayan , Arce Emerson , Chauca Mario
Published: January 2019

Implement a system in which the variables of temperature, humidity, luminosity, CO2 and PH developing it in a crop hydroponic that guarantees the survival of the plant. In addition to monitoring and controlling pests that could affect the plant. Through an automated system with renewable energy. Obtaining energy with solar and wind panels. Also accumulate rainwater for watering the plants. Thus achieving a self-sustainable system, with better quality products and cultivate all kinds of food on any day of the year.
Network Traffic Lights with Telemetry and Wireless Connectivity Perimeter
Authors: Víctor España , Eddy Chuchon , David Caytuiro , Advincula Iván , Chauca Mario
Published: January 2019

The following research document seeks to show an alternative to vehicle control systems using existing technologies to develop a system that is efficient and reliable. The creation and operation of a traffic light network will be presented, which will be located in an area where there is traffic congestion. The following network will reorganize, optimize, and measure the vehicular flow in real time. In some countries, intelligent traffic lights have been implemented, with which they have obtained satisfactory benefits by improving the vehicular flow of the places where these systems are located; for this reason we consider it necessary to use smart traffic lights in our country.
Geometry Modeling of Truss Structure for a Space Deployable Parabolic Cylindrical Antenna
Authors: Dong Bo , Zhang Han , Zhang Yiqun , Li Na
Published: January 2019

To meet the requirements for larger aperture and high storage rate deployable antenna in the space missions, a geometry modeling design scheme for parabolic cylindrical antenna was proposed based on module connection. The scheme raised in this paper realized geometry modeling for different aperture of antenna utilizing several kinds of modules. According to the shape feature of mesh surface of the parabolic cylindrical antenna, the schematic design for module division was carried out in the parabolic direction and baseline. The number of modules and the size of links were calculated meanwhile. The validity of the scheme was proved by numerical analysis for the deployable process.
Actualités du séquençage d’ADN
Authors: Jordan Bertrand
Published: January 2019

The planned acquisition of Pacific Biosciences by Illumina could signal a big change in the DNA sequencing landscape, and provides the incentive for an update on a field that still has a number of players and could be disrupted by innovative technologies.