bluuebunny/crossref_metadata_2025 huggingface dataset:
Apolipoprotein A-IV binds αIIbβ3 integrin and inhibits thrombosis
Authors: Xu Xiaohong Ruby , Wang Yiming , Adili Reheman , Ju Lining , Spring Christopher M. , Jin Joseph Wuxun , Yang Hong , Neves Miguel A. D. , Chen Pingguo , Yang Yan , Lei Xi , Chen Yunfeng , Gallant Reid C. , Xu Miao , Zhang Hailong , Song Jina , Ke Peifeng , Zhang Dan , Carrim Naadiya , Yu Si-Yang , Zhu Guangheng , She Yi-Min , Cyr Terry , Fu Wenbin , Liu Guoqing , Connelly Philip W. , Rand Margaret L. , Adeli Khosrow , Freedman John , Lee Jeffrey E. , Tso Patrick , Marchese Patrizia , Davidson W. Sean , Jackson Shaun P. , Zhu Cheng , Ruggeri Zaverio M. , Ni Heyu
Published: August 2018

Platelet αIIbβ3 integrin and its ligands are essential for thrombosis and hemostasis, and play key roles in myocardial infarction and stroke. Here we show that apolipoprotein A-IV (apoA-IV) can be isolated from human blood plasma using platelet β3 integrin-coated beads. Binding of apoA-IV to platelets requires activation of αIIbβ3 integrin, and the direct apoA-IV-αIIbβ3 interaction can be detected using a single-molecule Biomembrane Force Probe. We identify that aspartic acids 5 and 13 at the N-terminus of apoA-IV are required for binding to αIIbβ3 integrin, which is additionally modulated by apoA-IV C-terminus via intra-molecular interactions. ApoA-IV inhibits platelet aggregation and postprandial platelet hyperactivity. Human apoA-IV plasma levels show a circadian rhythm that negatively correlates with platelet aggregation and cardiovascular events. Thus, we identify apoA-IV as a novel ligand of αIIbβ3 integrin and an endogenous inhibitor of thrombosis, establishing a link between lipoprotein metabolism and cardiovascular diseases.
Jungle Express is a versatile repressor system for tight transcriptional control
Authors: Ruegg Thomas L. , Pereira Jose H. , Chen Joseph C. , DeGiovanni Andy , Novichkov Pavel , Mutalik Vivek K. , Tomaleri Giovani P. , Singer Steven W. , Hillson Nathan J. , Simmons Blake A. , Adams Paul D. , Thelen Michael P.
Published: August 2018

Tightly regulated promoters are essential for numerous biological applications, where strong inducibility, portability, and scalability are desirable. Current systems are often incompatible with large-scale fermentations due to high inducer costs and strict media requirements. Here, we describe the bottom-up engineering of ‘Jungle Express’, an expression system that enables efficient gene regulation in diverse proteobacteria. This system is guided by EilR, a multidrug-binding repressor with high affinity to its optimized operator and cationic dyes that act as powerful inducers at negligible costs. In E. coli, the engineered promoters exhibit minimal basal transcription and are inducible over four orders of magnitude by 1 µM crystal violet, reaching expression levels exceeding those of the strongest current bacterial systems. Further, we provide molecular insights into specific interactions of EilR with its operator and with two inducers. The versatility of Jungle Express opens the way for tightly controlled and efficient gene expression that is not restricted to host organism, substrate, or scale.
Reflection of near-infrared light confers thermal protection in birds
Authors: Medina Iliana , Newton Elizabeth , Kearney Michael R. , Mulder Raoul A. , Porter Warren P. , Stuart-Fox Devi
Published: August 2018

Biologists have focused their attention on the optical functions of light reflected at ultraviolet and human-visible wavelengths. However, most radiant energy in sunlight occurs in ‘unseen’ near-infrared (NIR) wavelengths. The capacity to reflect solar radiation at NIR wavelengths may enable animals to control heat gain and remain within their critical thermal limits. Here, using a continent-wide phylogenetic analysis of Australian birds, we show that species occupying hot, arid environments reflect more radiant energy in NIR wavelengths than species in thermally benign environments, even when controlling for variation in visible colour. Biophysical models confirm that smaller species gain a greater advantage from high NIR reflectivity in hot, arid environments, reducing water loss from compensatory evaporative cooling by up to 2% body mass per hour. These results highlight the importance of NIR reflectivity for thermal protection, which may become increasingly critical as the frequency of extreme climatic events increases.
Imaging the nanoscale phase separation in vanadium dioxide thin films at terahertz frequencies
Authors: Stinson H. T. , Sternbach A. , Najera O. , Jing R. , Mcleod A. S. , Slusar T. V. , Mueller A. , Anderegg L. , Kim H. T. , Rozenberg M. , Basov D. N.
Published: August 2018

Vanadium dioxide (VO2) is a material that undergoes an insulator–metal transition upon heating above 340 K. It remains debated as to whether this electronic transition is driven by a corresponding structural transition or by strong electron–electron correlations. Here, we use apertureless scattering near-field optical microscopy to compare nanoscale images of the transition in VO2 thin films acquired at both mid-infrared and terahertz frequencies, using a home-built terahertz near-field microscope. We observe a much more gradual transition when THz frequencies are utilized as a probe, in contrast to the assumptions of a classical first-order phase transition. We discuss these results in light of dynamical mean-field theory calculations of the dimer Hubbard model recently applied to VO2, which account for a continuous temperature dependence of the optical response of the VO2 in the insulating state.
Water chemistry reveals a significant decline in coral calcification rates in the southern Red Sea
Authors: Steiner Zvi , Turchyn Alexandra V. , Harpaz Eyal , Silverman Jacob
Published: August 2018

Experimental and field evidence support the assumption that global warming and ocean acidification is decreasing rates of calcification in the oceans. Local measurements of coral growth rates in reefs from various locations have suggested a decline of ~6–10% per decade since the late 1990's. Here, by measuring open water strontium-to-alkalinity ratios along the Red Sea, we show that the net contribution of hermatypic corals to the CaCO3 budget of the southern and central Red Sea declined by ~100% between 1998 and 2015 and remained low between 2015 and 2018. Measured differences in total alkalinity of the Red Sea surface water indicate a 26 ± 16% decline in total CaCO3 deposition rates along the basin. These findings suggest that coral reefs of the southern Red Sea are under severe stress and demonstrate the strength of geochemical measurements as cost-effective indicators for calcification trends on regional scales.
Realization of vertical metal semiconductor heterostructures via solution phase epitaxy
Authors: Wang Xiaoshan , Wang Zhiwei , Zhang Jindong , Wang Xiang , Zhang Zhipeng , Wang Jialiang , Zhu Zhaohua , Li Zhuoyao , Liu Yao , Hu Xuefeng , Qiu Junwen , Hu Guohua , Chen Bo , Wang Ning , He Qiyuan , Chen Junze , Yan Jiaxu , Zhang Wei , Hasan Tawfique , Li Shaozhou , Li Hai , Zhang Hua , Wang Qiang , Huang Xiao , Huang Wei
Published: August 2018

The creation of crystal phase heterostructures of transition metal chalcogenides, e.g., the 1T/2H heterostructures, has led to the formation of metal/semiconductor junctions with low potential barriers. Very differently, post-transition metal chalcogenides are semiconductors regardless of their phases. Herein, we report, based on experimental and simulation results, that alloying between 1T-SnS2 and 1T-WS2 induces a charge redistribution in Sn and W to realize metallic Sn0.5W0.5S2 nanosheets. These nanosheets are epitaxially deposited on surfaces of semiconducting SnS2 nanoplates to form vertical heterostructures. The ohmic-like contact formed at the Sn0.5W0.5S2/SnS2 heterointerface affords rapid transport of charge carriers, and allows for the fabrication of fast photodetectors. Such facile charge transfer, combined with a high surface affinity for acetone molecules, further enables their use as highly selective 100 ppb level acetone sensors. Our work suggests that combining compositional and structural control in solution-phase epitaxy holds promises for solution-processible thin-film optoelectronics and sensors.
Co-activation of super-enhancer-driven CCAT1 by TP63 and SOX2 promotes squamous cancer progression
Authors: Jiang Yuan , Jiang Yan-Yi , Xie Jian-Jun , Mayakonda Anand , Hazawa Masaharu , Chen Li , Xiao Jin-Fen , Li Chun-Quan , Huang Mo-Li , Ding Ling-Wen , Sun Qiao-Yang , Xu Liang , Kanojia Deepika , Jeitany Maya , Deng Jian-Wen , Liao Lian-Di , Soukiasian Harmik J. , Berman Benjamin P. , Hao Jia-Jie , Xu Li-Yan , Li En-Min , Wang Ming-Rong , Bi Xin-Gang , Lin De-Chen , Koeffler H. Phillip
Published: August 2018

Squamous cell carcinomas (SCCs) are aggressive malignancies. Previous report demonstrated that master transcription factors (TFs) TP63 and SOX2 exhibited overlapping genomic occupancy in SCCs. However, functional consequence of their frequent co-localization at super-enhancers remains incompletely understood. Here, epigenomic profilings of different types of SCCs reveal that TP63 and SOX2 cooperatively and lineage-specifically regulate long non-coding RNA (lncRNA) CCAT1 expression, through activation of its super-enhancers and promoter. Silencing of CCAT1 substantially reduces cellular growth both in vitro and in vivo, phenotyping the effect of inhibiting either TP63 or SOX2. ChIRP analysis shows that CCAT1 forms a complex with TP63 and SOX2, which regulates EGFR expression by binding to the super-enhancers of EGFR, thereby activating both MEK/ERK1/2 and PI3K/AKT signaling pathways. These results together identify a SCC-specific DNA/RNA/protein complex which activates TP63/SOX2-CCAT1-EGFR cascade and promotes SCC tumorigenesis, advancing our understanding of transcription dysregulation in cancer biology mediated by master TFs and super-enhancers.
Printing two-dimensional gallium phosphate out of liquid metal
Authors: Syed Nitu , Zavabeti Ali , Ou Jian Zhen , Mohiuddin Md , Pillai Naresh , Carey Benjamin J. , Zhang Bao Yue , Datta Robi S. , Jannat Azmira , Haque Farjana , Messalea Kibret A. , Xu Chenglong , Russo Salvy P. , McConville Chris F. , Daeneke Torben , Kalantar-Zadeh Kourosh
Published: August 2018

Two-dimensional piezotronics will benefit from the emergence of new crystals featuring high piezoelectric coefficients. Gallium phosphate (GaPO4) is an archetypal piezoelectric material, which does not naturally crystallise in a stratified structure and hence cannot be exfoliated using conventional methods. Here, we report a low-temperature liquid metal-based two-dimensional printing and synthesis strategy to achieve this goal. We exfoliate and surface print the interfacial oxide layer of liquid gallium, followed by a vapour phase reaction. The method offers access to large-area, wide bandgap two-dimensional (2D) GaPO4 nanosheets of unit cell thickness, while featuring lateral dimensions reaching centimetres. The unit cell thick nanosheets present a large effective out-of-plane piezoelectric coefficient of 7.5 ± 0.8 pm V−1. The developed printing process is also suitable for the synthesis of free standing GaPO4 nanosheets. The low temperature synthesis method is compatible with a variety of electronic device fabrication procedures, providing a route for the development of future 2D piezoelectric materials.
Single-bubble water boiling on small heater under Earth’s and low gravity
Authors: Elele Ezinwa , Shen Yueyang , Tang John , Lei Qian , Khusid Boris
Published: August 2018

Today’s trends for enhancing boiling heat transfer in terrestrial and space applications focus on removal of bubbles to prevent formation of a vapor layer over the surface at high overheat. In contrast, this paper presents a new boiling regime that employs a vapor–air bubble residing on a small heater for minutes and driving cold water over the surface to provide high heat flux. Single-bubble boiling of water was investigated under normal gravity and low gravity in parabolic flights. Experiments demonstrated a negligible effect of gravity level on the rate of heat transfer from the heater. Due to self-adjustment of the bubble size, the heat flux provided by boiling rose linearly up with increasing heater temperature and was not affected by a gradually rising water temperature. The fast response and stable operation of single-bubble boiling over a broad range of temperatures pave the way for development of new devices to control heat transfer by forming surface domains with distinct thermal properties and wettability. The bubble lifetime can be adjusted by changing the water temperature. The ability of heating water on millimeter scales far above 100 °C without an autoclave or a powerful laser provides a new approach for processing of biomaterials and chemical reactions.
A tRNA-based multiplex sgRNA expression system in zebrafish and its application to generation of transgenic albino fish
Authors: Shiraki Tomoya , Kawakami Koichi
Published: August 2018

The CRISPR/Cas9 system can be introduced into zebrafish as transgenes. Namely, expression of single-guide RNA (sgRNA) and controlled expression of Cas9 in transgenic zebrafish enables the study of gene functions in specific cell types. This transgenic CRISPR/Cas9 approach would be more useful if multiple sgRNAs could be expressed simultaneously since we could knock-out a gene more efficiently or disrupt multiple genes simultaneously. Here we describe a novel system to express multiple sgRNAs efficiently in zebrafish, that relies on the endogenous tRNA processing machinery. We cloned nine endogenous zebrafish tRNA genes, fused them to sgRNAs, and demonstrated that an active sgRNA can be produced from a precursor transcript containing either of these tRNAs. To show a proof of principle, we constructed transgenic fish expressing Cas9 under the control of the ubiquitin promoter and a single transcript containing three distinct sgRNAs, that targeted the slc45a2 (albino) gene, fused to tRNAs under the control of the U6 promoter. We found that the Tg(ubb:SpCas9,u6c:3xslc45a2-sgRNA) harbored mutations in all of the target sites in the albino gene and showed nearly complete albino phenotypes, which were amenable to imaging experiments. Thus, the tRNA-based multiplex sgRNA expression system should facilitate gene knock-out studies in transgenic zebrafish.
Ultracompact Graphene-Assisted Tunable Waveguide Couplers with High Directivity and Mode Selectivity
Authors: Meng Yuan , Hu Futai , Shen Yijie , Yang Yuanmu , Xiao Qirong , Fu Xing , Gong Mali
Published: August 2018

Graphene distinguishes itself as a promising candidate for realizing tunable integrated photonic devices with high flexibility. We propose a set of ultracompact tunable on-chip waveguide couplers with mode-selectivity and polarization sensitivity around the telecom wavelength of 1.55 μm, under the configuration of graphene-laminated silicon waveguides patterned with gold nanoantennas. Versatile couplings can be achieved in a widely tunable fashion within a deep-subwavelength area (210 × 210 nm2), by marrying the advantages of tight field confinement in plasmonic antennas and the largely tunable carrier density of graphene. Incident light signals can be selectively coupled into different fundamental modes with good mode quality and high directionality exceeding 25 dB. Design scenarios for asymmetric couplings are presented, where the operation wavelength can be tuned across a 107-nm range around 1.55 mm by altering the chemical potential of graphene from 0 to 1.8 eV. Furthermore, the proposed schemes can be leveraged as mode-sensitive on-chip directional waveguide signal detectors with an extinction ratio over 10 dB. Our results provide a new paradigm upon graphene-assisted tunable integrated photonic applications.
Visual percepts modify iconic memory in humans
Authors: Sugita Yoichi , Hidaka Souta , Teramoto Wataru
Published: August 2018

Our visual system briefly retains a trace of a stimulus after it disappears. This phenomenon is known as iconic memory and its contents are thought to be temporally integrated with subsequent visual inputs to produce a single composite representation. However, there is little consensus on the temporal integration between iconic memory and subsequent visual inputs. Here, we show that iconic memory revises its contents depending upon the configuration of the newly produced single representation with particular temporal characteristics. The Poggendorff illusion, in which two collinear line segments are perceived as non-collinear by an intervening rectangle, was observed when the rectangle was presented during a period spanning from 50 ms before to 200 ms after the presentation of the line segments. The illusion was most prominent when the rectangle was presented approximately 100 to 150 ms after the line segments. Furthermore, the illusion was observed at the center of a moving object, but only when the line segments were presented before the rectangle. These results indicate that the contents of iconic memory are susceptible to the modulatory influence of subsequent visual inputs before being translated into conscious perception in a time-locked manner both in retinotopic and non-retinotopic, object-centered frames of reference.
GM1 ganglioside prevents axonal regeneration inhibition and cognitive deficits in a mouse model of traumatic brain injury
Authors: Benady Amit , Freidin Dor , Pick Chaim G. , Rubovitch Vardit
Published: August 2018

Traumatic Brain Injury (TBI) is one of the most common causes of neurological damage in young populations. It has been previously suggested that one of the mechanisms that underlie brain injury is Axonal Outgrowth Inhibition (AOI) that is caused by altered composition of the gangliosides on the axon surface. In the present study, we have found a significant reduction of GM1 ganglioside levels in the cortex in a closed head traumatic brain injury model of a mouse, induced by a weight drop device. In addition, axonal regeneration in the brains of the injured mice was affected as seen by the expression of the axonal marker pNF-H and the growth cones (visualized by F-actin and β-III-tubulin). NeuN immunostaining revealed mTBI-induced damage to neuronal survival. Finally, as expected, spatial and visual memories (measured by the Y-maze and the Novel Object Recognition tests, respectively) were also damaged 7 and 30 days post injury. A single low dose of GM1 shortly after the injury (2 mg/kg; IP) prevented all of the deficits mentioned above. These results reveal additional insights into the neuroprotective characteristics of GM1 in prevention of biochemical, cellular and cognitive changes caused by trauma, and may suggest a potential intervention for mTBI.
Ultra-Wideband Impulse Radar Through-Wall Detection of Vital Signs
Authors: Liang Xiaolin , Deng Jianqin , Zhang Hao , Gulliver Thomas Aaron
Published: August 2018

This paper presents a new system for the detection of human respiration behind obstacles using impulse ultra-wideband (UWB) radar. In complex environments, low signal-to-noise ratios (SNRs) as they can result in significant errors in the respiration, heartbeat frequency, and range estimates. To improve the performance, the complex signal demodulation (CSD) technique is extended by employing the signal logarithm and derivative. A frequency accumulation (FA) method is proposed to suppress mixed products of the heartbeat and respiration signals and spurious respiration signal harmonics. The respiration frequency is estimated using the phase variations in the received signal, and a discrete short-time Fourier transform (DSFT) is used to estimate the range. The performance of the proposed system is evaluated along with that of several well-known techniques in the literature.
Theoretical Methods for Attosecond Coupled Electron-nuclear Dynamics In Molecular Photoionization
Authors: Palacios Alicia , Sanz-Vicario José Luis , Martín Fernando
Published: August 2018

This chapter focuses on theoretical methods that have been especially designed to describe time–resolved coupled electron-nuclear dynamics resulting from the interaction of molecules with XUV attosecond pulses. These pulses inevitably lead to ionization of the molecule, so that any meaningful theoretical description of the ensuing dynamics must be based in the solution of the time–dependent Schrödinger equation by explicitly including (i) electronic and nuclear degrees of freedom, and (ii) a description of the electronic continuum of the system. The chapter starts with a description of full dimensional ab initio methodologies, which are only feasible for diatomic molecules, but provide a benchmark for applications in more complex targets. Then the performance of these methods is illustrated for three different systems in a variety of physical scenarios: two–photon resonant ionization and high-harmonic generation in H2+, laser–induced Rabi flopping in multi–photon ionization of H2, and dissociative ionization of N2 within an attosecond XUV–pump/IR–probe scheme. For large molecules, the description of the ionization process requires more approximate methods and nuclear dynamics can only be incorporated by adopting classical or semi–classical approaches. The chapter concludes with a brief description of the latter methods and their performance in investigating the coupled electron and nuclear dynamics induced by attosecond pulses in the amino acid glycine.
How Nuclear Motion Affects Coherent Electron Dynamics in Molecules
Authors: Robb Michael A. , Jenkins Andrew J. , Vacher Morgane
Published: August 2018

Knowledge about the electron dynamics in molecules is essential for our understanding of chemical and biological processes. Because of their light mass, electrons are expected to move on the attosecond (1 as = 10− 18 s) timescale. The first synthesis of attosecond pulses in 2001 has opened up the possibility of probing electronic motion on its intrinsic timescale. Excitation or ionisation of a molecule with such a short pulse leads to the coherent population of several electronic states, called an electronic wavepacket. The interference between electronic states in such a superposition, alternating between constructive and destructive, leads to oscillating motion of the electron cloud. This purely quantum process relies on the coherence of the electronic wavepacket. A fundamental challenge is to understand to what extent the electronic wavepacket retains its coherence, i.e., how long the oscillations in the electron cloud survive, in the presence of interactions with the nuclei of the molecule. To address this question, we have developed semi-classical and quantum mechanical methods to simulate the dynamics upon ionisation of polyatomic molecules. The chapter contains a review of the theoretical methods we have developed and some applications illustrating new important physical insights about the predicted decoherence process.
SERS-based quantification of albuminuria in the normal-to-mildly increased range
Authors: Stefancu Andrei , Moisoiu Vlad , Bocsa Corina , Bálint Zoltán , Cosma Daniel-Tudor , Veresiu Ioan Andrei , Chiş Vasile , Leopold Nicolae , Elec Florin
Published: August 2018

We developed a SERS-based method for the screening of albuminuria in the sub-microalbuminuria interval. We show the potential of SERS for absolute quantification of albumin.
A naphthalene-based fluorescent probe with a large Stokes shift for mitochondrial pH imaging
Authors: Lin Bo , Fan Li , Ge Jinyin , Zhang Wenjia , Zhang Caihong , Dong Chuan , Shuang Shaomin
Published: August 2018

A naphthalene-based fluorescent pH probe with a pKa of 8.8 for imaging mitochondrial pH changes in live cells.
Rapid screening of anti-tumor metastasis drugs targeting integrin macrophage antigen-1 using immobilized cell capillary electrophoresis
Authors: Wu Ruijun , Li Cong , Sun Xiaozhi , Zhang Sufang , Liang Chunsu , Jiang Yong , Hu Xin , Yan Youqi , Ling Xiaomei
Published: August 2018

In this research, a method called immobilized cell capillary electrophoresis was established under approximately physiological conditions for rapid screening of anti-tumor metastasis drugs targeting MAC-1.
Portable and laboratory analytical instruments for the study of materials, techniques and environmental impacts in mediaeval mural paintings
Authors: Costantini Ilaria , Castro Kepa , Madariaga Juan Manuel
Published: August 2018

An overview concerning the study of mediaeval wall paintings published in the last 20 years was described and a change in the use of diagnostic techniques has been emphasized. Indeed, actually they are used especially for the study of decay products with the aim of suggesting the best conservation method.
Structure and properties of [(4,6-tBu2C6H2O)2Se]2An(THF)2, An = U, Np, and their reaction with p-benzoquinone
Authors: Myers Alexander J. , Rungthanaphatsophon Pokpong , Behrle Andrew C. , Vilanova Sean P. , Kelley Stephen P. , Lukens Wayne W. , Walensky Justin R.
Published: August 2018

The synthesis and characterization of U(iv) and Np(iv) selenium bis(phenolate) complexes are reported.
Spider prey-wrapping silk is an α-helical coiled-coil/β-sheet hybrid nanofiber
Authors: Addison B. , Onofrei D. , Stengel D. , Blass B. , Brenneman B. , Ayon J. , Holland G. P.
Published: August 2018

Solid-State NMR results on 13C-Ala/Ser and 13C-Val enriched Argiope argentata prey-wrapping silk show that native, freshly spun aciniform silk nanofibers are dominated by α-helical (∼50% total) and random-coil (∼35% total) secondary structures, with minor β-sheet nanocrystalline domains (∼15% total).
Aligning self-assembled perylene bisimides in a magnetic field
Authors: Draper Emily R. , Wallace Matthew , Honecker Dirk , Adams Dave J.
Published: August 2018

Directional dependent photoresponsive perylene bisimide thin films can be made by aligning and drying under a magnetic field. This can be monitored by NMR and small angle neutron scattering and assessed by imaging and electrochemical techniques.
Coordination supramolecules with oxazoline-containing ligands
Authors: Huang Yong-Qing , Sun Wei-Yin
Published: August 2018

This highlight focuses on the recent development of oxazoline-based discrete coordination complexes and coordination polymers.
Q-model of electrode reactions: altering force constants of intramolecular vibrations
Authors: Matyushov Dmitry V. , Newton Marshall D.
Published: August 2018

Vibrational force constants of molecules can be altered in electrode reactions. A theory is formulated accounting for such effects in terms of non-parabolic free energy surfaces.
From strong to weak NF bonds: on the design of a new class of fluorinating agents
Authors: Setiawan Dani , Sethio Daniel , Cremer Dieter , Kraka Elfi
Published: August 2018

The first quantitative description of the NF bond strength based on local vibrational stretching NF force constants determined with CCSD(T).
From 3D to 2D zeolite catalytic materials
Authors: Přech J. , Pizarro P. , Serrano D. P. , Čejka J.
Published: August 2018

Research activities and recent developments in the area of three-dimensional zeolites and their two-dimensional analogues are reviewed.
Azobenzene-based solar thermal fuels: design, properties, and applications
Authors: Dong Liqi , Feng Yiyu , Wang Ling , Feng Wei
Published: August 2018

This review provides a state-of-the-art account on azobenzene-based solar thermal fuels from their fundamentals to advanced photoactive storage materials and new perspectives on the future scope, opportunities and challenges.
Surface hydroxylation induced by alkaline-earth metal doping in NiO nanocrystals and its application in achieving a wide temperature operation window for preferential CO oxidation
Authors: Li Huixia , Li Liping , Fang Shaofan , Wang Jianghao , Chen Shaoqing , Huang Xinsong , Leng Zhihua , Li Guangshe
Published: August 2018

A series of Pt/Ni1−xMgxO catalysts with a low Pt loading of 0.5 wt% are prepared by multistep co-precipitation and annealing processes followed by wet impregnation.
Erasable memory properties of spectral selectivity modulated by temperature and bias in an individual CdS nanobelt-based photodetector
Authors: Tong Tao , Wang Shujuan , Zhao Jie , Cheng Baochang , Xiao Yanhe , Lei Shuijin
Published: August 2018

Single CdS nanobelt-based photodetectors show an ultra-high response to light close to the bandgap energy at large bias, and moreover their spectral response range selectivity to above- and below-bandgap light can show an reversable memory by temperature-writing and bias-erasing.
Active tuning of the Fano resonance from a Si nanosphere dimer by the substrate effect
Authors: Huang Yingcong , Yan Jiahao , Ma Churong , Yang Guowei
Published: August 2018

The phase transition of VO2 has been used in the active tuning of the Fano resonance from a Si nanosphere dimer by the substrate effect.
Mesoporous Fe-based spindles designed as catalysts for the Fischer–Tropsch synthesis of C5+ hydrocarbons
Authors: Zhang Yulan , Lin Xizhu , Li Xinjun , Wang Chenguang , Long Qiong , Ma Longlong
Published: August 2018

Novel active phase assembled mesoporous spindles are designed. This unique structure avoids metal-support interactions and displays high C5+ selectivity.
Superhydrophobic plasmonic nanoarchitectures based on aluminum hydroxide nanotemplates
Authors: Yoon Daesung , Chae Songhwa , Kim Wook , Lee Donghun , Choi Dukhyun
Published: August 2018

Superhydrophobic plasmonic nanostructures are developed by cost-effective and scalable template-based nanolithography, finally providing high SERS signals (enhancement factor ≈106).
Accurate and sensitive single-cell-level detection of copy number variations by micro-channel multiple displacement amplification (μcMDA)
Authors: Li Junji , Lu Na , Tao Yuhan , Duan Mengqin , Qiao Yi , Xu Yuming , Ge Qinyu , Bi Changwei , Fu Jiye , Tu Jing , Lu Zuhong
Published: August 2018

An improved multiple displacement amplification (MDA) approach realized by compressing the geometry of the reaction vessel exhibits high performance for single-cell-level CNV detection.
Experimental evidence for the formation of cationic intermediates during iodine(iii)-mediated oxidative dearomatization of phenols
Authors: Tang Ting , Harned Andrew M.
Published: August 2018

Hammett analysis reveals iodine(iii)-mediated oxidative dearomatization reactions proceed through cationic intermediates and not direct nucleophilic attack on an activated phenol.
Synthesis of two novel [18F]fluorobenzene-containing radiotracersviaspirocyclic iodonium ylides and positron emission tomography imaging of translocator protein (18 kDa) in ischemic brain
Authors: Fujinaga Masayuki , Kumata Katsushi , Zhang Yiding , Hatori Akiko , Yamasaki Tomoteru , Mori Wakana , Ohkubo Takayuki , Xie Lin , Nengaki Nobuki , Zhang Ming-Rong
Published: August 2018

A new radiotracer for imaging TSPO:Ki, 0.70 nM and no radiolabeled metabolite in the brain.
Synthesis of macrocyclic precursors of the vioprolides
Authors: Butler Eibhlin , Florentino Lucia , Cornut Damien , Gomez-Campillos Gonzalo , Liu Hao , Regan Andrew C. , Thomas Eric J.
Published: August 2018

Convergent syntheses have been developed of macrocycles that may be useful for the synthesis of vioprolide D. Preliminary studies have also been carried out into the introduction of the thiazoline and (E)-dehydrobutyrine components.
Robust cobalt perforated with multi-walled carbon nanotubes as an effective sensing material for acetone detection
Authors: Zhang Rui , Zhang Ming , Zhou Tingting , Zhang Tong
Published: August 2018

A robust Co3O4-decorated MWCNT-based sensing platform exhibits selective response/recovery acetone behavior at a low working temperature of 120 °C.
Self-discharge rates in cells have a critical effect on the cycle life of parallel lithium-ion batteries
Authors: An Fuqiang , Zhao Hongliang , Li Ping
Published: August 2018

More than two parameters are adopted to sort lithium ion cells (LICs) for better performance in the production process, such as capacity, open-circuit voltage (OCV), direct current resistance (DCR),et al.
Two one-dimensional arrays of naphthyl and anthryl groups along peptide nanotubes prepared from cyclic peptides comprising α- and β-amino acids
Authors: Tabata Yuki , Uji Hirotaka , Imai Tomoya , Kimura Shunsaku
Published: August 2018

A novel cyclic hexapeptide composed ofl-α-naphthylalanine,d-α-anthrylalanine, and four β-alanines (CP6) is synthesized and its molecular assembly into peptide nanotubes (PNTs) and the electronic properties arising from one-dimensional arrays of aromatic groups along the PNTs are investigated.
Correction: Seedless assembly of colloidal crystals by inverted micro-fluidic pumping
Authors: Niu Ran , Palberg Thomas
Published: August 2018

Correction for ‘Seedless assembly of colloidal crystals by inverted micro-fluidic pumping’ by Ran Niu et al., Soft Matter, 2018, 14, 3435–3442.
Electrospun fluorescent sensors for the selective detection of nitro explosive vapors and trace water
Authors: Wu Wandan , Shi Naien , Zhang Jun , Wu Xiaodong , Wang Tao , Yang Lei , Yang Rui , Ou Changjin , Xue Wei , Feng Xiaomiao , Xie Linghai , Huang Wei
Published: August 2018

Electrospun composite fluorescent sensors for selective discrimination of nitro explosives and trace water were developed.
Nitrogen- and sulfur-enriched porous carbon from waste watermelon seeds for high-energy, high-temperature green ultracapacitors
Authors: Thangavel Ranjith , Kannan Aravindaraj G. , Ponraj Rubha , Thangavel Vigneysh , Kim Dong-Won , Lee Yun-Sung
Published: August 2018

Electrochemical ultracapacitors exhibiting high energy output and an ultra-long cycle life, utilizing green and sustainable materials, are of paramount importance for next-generation applications.
Sub-monolayer control of the growth of oxide films on mesoporous materials
Authors: Weng Zhihuan , Chen Zhi-hui , Qin Xiangdong , Zaera Francisco
Published: August 2018

Mixed oxide surfaces were developed via the atomic layer deposition of a variety of oxide thin films on mesoporous materials.
Identifying and controlling phase purity in 2D hybrid perovskite thin films
Authors: Hu Yinghong , Spies Laura M. , Alonso-Álvarez Diego , Mocherla Priyanka , Jones Harry , Hanisch Jonas , Bein Thomas , Barnes Piers R. F. , Docampo Pablo
Published: August 2018

Improved phase purity in 2D hybrid perovskite thin films with horizontal crystal orientation was achieved through slow crystallization employing lead-complexing solvent additives.
A facile method for scalable synthesis of ultrathin g-C3N4 nanosheets for efficient hydrogen production
Authors: Zhang Jian-Hua , Hou Ya-Jun , Wang Su-Juan , Zhu Xunjin , Zhu Cheng-Yi , Wang Zheng , Li Chao-Jie , Jiang Ji-Jun , Wang Hai-Ping , Pan Mei , Su Cheng-Yong
Published: August 2018

Scalable production of ultrathin g-C3N4 nanosheets for efficient water splitting by the aid of kitchen-available melamine foam (MF).
Efficient non-fullerene organic solar cells employing sequentially deposited donor–acceptor layers
Authors: Zhang Jiangbin , Kan Bin , Pearson Andrew J. , Parnell Andrew J. , Cooper Joshaniel F. K. , Liu Xiao-Ke , Conaghan Patrick J. , Hopper Thomas R. , Wu Yutian , Wan Xiangjian , Gao Feng , Greenham Neil C. , Bakulin Artem A. , Chen Yongsheng , Friend Richard H.
Published: August 2018

A new fabrication method via sequentially depositing donor and acceptor layers can push the power conversion efficiency of organic solar cells based on non-fullerene acceptors to over 10%.
Inverse-vulcanization of vinyl functionalized covalent organic frameworks as efficient cathode materials for Li–S batteries
Authors: Jiang Qiang , Li Yusen , Zhao Xinxin , Xiong Peixun , Yu Xiang , Xu Yunhua , Chen Long
Published: August 2018

A mesoporous imine COF with densely arranged vinyl groups (COF-V) was inverse-vulcanized with sulfur and used as an efficient cathode material for Li–S batteries.
Polyoxomolybdate-derived carbon-encapsulated multicomponent electrocatalysts for synergistically boosting hydrogen evolution
Authors: Liu Xiong , Ni Kun , Wen Bo , Niu Chaojiang , Meng Jiashen , Guo Ruiting , Li Qi , Li Jiantao , Zhu Yanwu , Wu Xiaojun , Zhao Dongyuan , Mai Liqiang
Published: August 2018

A polyoxomolybdate-derived N-doped carbon-encapsulated multicomponent electrocatalyst (MoO2–Ni@NC) with nanowire structure exhibits high efficiency and acid-stable hydrogen evolution reaction performance.
n-Type organic electrochemical transistors: materials and challenges
Authors: Sun Hengda , Gerasimov Jennifer , Berggren Magnus , Fabiano Simone
Published: August 2018

The rise of n-type organic electrochemical transistors (OECTs): from materials to applications.
Controlling excimer formation in indolo[3,2,1-jk]carbazole/9H-carbazole based host materials for RGB PhOLEDs
Authors: Zhao Chenyang , Schwartz Thomas , Stöger Berthold , White Fraser J. , Chen Jiangshan , Ma Dongge , Fröhlich Johannes , Kautny Paul
Published: August 2018

Excimer formation in indolo[3,2,1-jk]carbazole based host materials is controlled by molecular design and the developed materials are employed in efficient red, green and blue PhOLED devices.
Performance analysis of free space optical communication traffic integrated with passive optical network
Authors: Yeh C.H. , Chow C.W. , Gu C.S. , Guo B.S. , Cheng Y.J. , Chen J.H.
Published: August 2018

In this Letter, a hybrid 10 Gbit/s on–off keying free space optics and passive optical network (FSO‐PON) system is proposed and demonstrated. The experimental received sensitivities are −18 and −20 dBm at the back to back (BtB) and after 25 km fibre transmission, respectively, with 5 m free space traffic link. In the proposed analysis, FSO‐PON system can support 32 and 16; and 8 and 4 remote optical wireless units for free space communication at BtB and after 25 km fibre link, respectively, when the free space transmission lengths are 150 and 300 m.
Experimental and numerical investigation of a turbulent lobed diffuser jet: application to residential comfort
Authors: Bennia Abderazak , Loukarfi Larbi , Khelil Ali , Mohamadi Said , Braikia Mohamed , Naji Hassan
Published: August 2018

In this work, we present an experimental and numerical study of a turbulent jet from a lobed diffuser, applied to residential comfort. The main aim is the improvement of the air diffusion efficiency, of the ventilation driving flow in the occupancy zone, with least cost. The experiments have been conducted in a room where the dimensions enable a better execution in the conditions of free and hot vertical jet at unfavorable pushing forces. The room has been isolated from the environment during experiments. The temperature difference between the jet and the environment has been controlled by readjusting the blowing jet temperature. Consequently, the jet's Archimedes number is kept constant during tests. The installation includes a hot air blowing diffuser oriented from top to bottom. The temperatures and velocities of the flow have been measured by a multi-functional thermo-anemometer. The probe is supported by a stem that is guided vertically and horizontally in order to sweep a maximum space. The numerical study has been carried out using the Fluent code (V.6). The numerical results obtained with the turbulence model (RNG k-ε) turned out to be in a good accordance with the experimental results.
An adaptive LQR controller based on PSO and maximum predominant frequency approach for semi-active control scheme using MR damper
Authors: Kumar Gaurav , Kumar Ashok , Jakka Ravi S.
Published: August 2018

In the linear quadratic regulator (LQR) problem, the generation of control force depends on the components of the control weighting matrix R. The value of R is determined while designing the controller and remains the same later. Amid a seismic event, the responses of the structure may change depending the quasi-resonance occurring between the structure and the earthquake signal. In this situation, it is essential to update the value of R for conventional LQR controller to get optimum control force to mitigate the vibrations due to the earthquake. Further, the constant value of the weighting matrix R leads to the wastage of the resources using larger force unnecessarily where the structural responses are smaller. Therefore, in the quest of utilizing the resources wisely and to determine the optimized value of the control weighting matrix R for LQR controller in real time, a maximum predominant period τpmax and particle swarm optimization-based method is presented here. This method comprises of four different algorithms: particle swarm optimization (PSO), maximum predominant period approach τpmax to find the dominant frequency for each window, clipped control algorithm (CO) and LQR controller. The modified Bouc-Wen phenomenological model is taken to recognize the nonlinearities in the MR damper. The assessment of the advised method is done on a three-story structure having a MR damper at ground floor subjected to three different near fault historical earthquake time histories. The outcomes are equated with those of simple conventional LQR. The results establish that the advised methodology is more effective than conventional LQR controllers in reducing inter-story drift, relative displacement, and acceleration response.
Separation and identification of polar polyphenols in oily formulation using high-performance thin-layer chromatography and mass spectroscopy techniques
Authors: Fadel Ophélie , Gomes Rodrigues Donatien , Girard Luc , Bauduin Pierre , Rossignol-Castera Anne , L’Hermitte Annabelle , Gaillard Jean-Charles , Diat Olivier
Published: August 2018

In cosmetics, there is some interest to solubilized polar antioxidant molecules in oil. This is a matrix that can indeed protect these fragile molecules against oxidation and that makes possible the polar antioxidants transfer through the epidermis in order to be delivered within the dermis. Varying the oil formulation allows the achievement of a high content of antioxidants in a natural vegetable oil using an oleo-eco extraction process. However, it was necessary to characterize this content using quantitative and efficient methods such as High-Performance Thin-Layer Chromatography technique. The aim of this work was to develop a method of antioxidant’s characterization with this technique without a preliminary re-extraction of the antioxidants.
Contrôle spatio-temporel de la lumière en milieux complexes
Authors: Mounaix Mickaël , Defienne Hugo , Gigan Sylvain
Published: August 2018

La diffusion de la lumière est souvent considérée comme un obstacle en optique, dont on souhaite s’affranchir. Alors que c’était encore inconcevable au début du siècle (il y a à peine 15 ans !), il est désormais possible de manipuler la lumière cohérente multidiffusée dans des échantillons complexes grâce aux modulateurs spatiaux de lumière. Cette nouvelle thématique, dite du « contrôle du front d’onde », s’avère très prometteuse pour l’imagerie en profondeur, mais également pour le contrôle de l’interaction lumière-matière en milieu désordonné.
Palladium(0)-Catalyzed Diastereoselective (3+2) Cycloadditions of Vinylcyclopropanes with Sulfonyl-Activated Imines
Authors: Vitale Maxime , Ling Johanne , Laugeois Maxime , Ratovelomanana-Vidal Virginie
Published: August 2018

We report herein a palladium(0)-catalyzed (3+2)-cycloaddition process between vinylcyclopropanes and cyclic or acyclic sulfonylimines. This reaction, which operates under low catalyst loading and practical reaction conditions, gives access to a wide variety of N-heterocyclic derivatives in good to excellent yields and high levels of diastereoselectivity.
Effect of Heat Shock on the Expression of Urokinase-Type Plasminogen Activator Receptor in Human Umbilical Vein Endothelial Cells
Authors: Fukao Hideharu , Hagiya Yasuhiro , Ueshima Shigeru , Okada Kiyotaka , Takaishi Tomaoki , Izaki Sellichi , Matsuo Osamu
Published: August 2018

We investigated the effect of heat shock on the fibrinolytic potential of human umbilical vein endothelial cells (HUVECs) in culture. When cultured at 43° C, the mRNA for heat shock protein 70 (HSP70) was dramatically induced within 120 min with a maximal induction of more than 90-fold compared with that in HUVECs cultured at 37° C. The level of urokinase-type plasminogen activator (u-PA) receptor (u-PAR) mRNA increased up to 2.2-fold in response to heat shock, which was associated with the increased u-PA binding and cell-surface u-PA activity determined by adding exogenous u-PA to acid-treated HUVECs. The increased u-PAR mRNA returned to normal level when HUVECs were further incubated at 37° C for 180 min, and this decline was not affected in the presence of actinomycin D. Though the secreted antigens for tissue-type plasminogen activator (t-PA) and type 1 plasminogen activator inhibitor (PAI-1) in the conditioned medium (CM) of HUVECs were simultaneously increased at 43° C during this period, the increase in the levels of t-PA (about 26.6-fold at 120 min) was greater than that of PAI-1 (1.8-fold at 120 min). The fibrinolytic activity of CM obtained from HUVECs at 43° C was significantly enhanced up to 3-fold, indicating that heat shock induced hyperfibrinolytic states in HUVECs. The secretion of u-PA into CM was also enhanced by heat shock. These results suggested that human endothelial cells respond to hyperthermia by inducing HSP70 followed by hyperfibrinolytic states with the enhanced expression of u-PAR as well as that of t-PA and u-PA.
Morphological Effects of Heat Stress on Cattle Kidney
Authors: Akosman Murat , Türkmenoğlu İsmail , Demirkan Aysun , Özdemir Vural , Akalan Mehmet
Published: August 2018

Introduction Cattle kidney is an interesting organ because of its individual morphological structure and the mobility of the left kidney. The effects of heat stress on animal yield have been previously researched. However, no data could be obtained during the literature research about the effects of heat stress on the morphological structure of cattle kidneys.

Materials and Methods In the present study, morphometric measurements were performed on the left and right kidneys of male and female Holstein cattle. The kidney samples were collected in the summer and winter seasons to assess the effects of heat stress. A scale, water overflow, and a Mitutoyo CDN-P20PMX caliper (Mitutoyo Corporation, Kanagawa, Japan) were used to obtain the morphological structural data of the total kidney, and stereological sampling methods with microscopy were performed to investigate the glomerulus density per unit area and the diameter of the glomerulus.

Results Morphological changes on the kidneys were observed after the measurements.

Conclusion It can be said that heat stress may cause morphologic changes on cattle kidneys.
Impact of the New American Hypertension Guidelines on the Prevalence of Postpartum Hypertension
Authors: Pudwell Jessica , Saade George , Smith Graeme
Published: August 2018

Cardiovascular disease (CVD) is the leading cause of death and disability among women, with more than half occurring in individuals with hypertension. New blood pressure criteria for the diagnosis of hypertension from the American College of Cardiology/American Heart Association recognize that there is no specific blood pressure threshold that is associated with vascular disease. We performed a secondary analysis of two published postpartum databases (the Pre-Eclampsia New Emerging Team [PE-NET] cohort and the Maternal Health Clinic [MHC] cohort) to determine the impact of the change in blood pressure criteria on the diagnosis of hypertension. The prevalence of hypertension in women with uncomplicated pregnancies (PE-NET control) was 22% compared with 56.4% in those who have had a pregnancy complicated by preeclampsia (PE, PE-NET patient) and 67.2% in those referred to the MHC due to a pregnancy complicated by any of the hypertensive disorders of pregnancy. It is well established that certain complications in pregnancy can reliably identify women with risk factors for future CVD. Thus, pregnancy and the postpartum afford a new opportunity for cardiovascular risk screening that could lead to lifestyle modification and therapeutic intervention. Applying the new guideline criteria at least doubles the prevalence of women with hypertension postpartum.
Perspektiven MSU
Authors: Brakutt Andrea
Published: August 2018

Die Ergebnisse einer Umfrage unter Physiotherapeuten belegt: Mehr als 50 % sehen
in der Anwendung des Muskuloskeletalen Ultraschalls (MSU) positive Auswirkungen
auf ihre Arbeit mit den Patienten und eine Verbesserung der Therapie. Die
Autorin stellt die Perspektiven für den zukünftigen Einsatz vor.