bluuebunny/crossref_metadata_2025_split huggingface dataset:
Could resistance to lactate accumulation contribute to the better swimming performance ofBrycon amazonicuswhen compared toColossoma macropomum?
Authors: Ferreira Marcio S. , Aride Paulo H.R. , Val Adalberto L. 
Published: October 2018

BackgroundIn the wild, matrinchã (Brycon amazonicus) and tambaqui (Colossoma macropomum) rely strongly on their swimming capacity to perform feeding, migration and reproductive activities. Sustained swimming speed in fishes is performed almost exclusively by aerobic red muscles. The white muscle has high contraction power, but fatigue quickly, being used mainly in sprints and bursts, with a maximum duration of few seconds. The Ucrit test, an incremental velocity procedure, is mainly a measure of the aerobic capacity of a fish, but with a high participation of anaerobic metabolism close to the velocity of fatigue. Our previous study has indicated a high swimming performance of matrinchã (Ucrit) after hypoxia exposure, despite increased levels of lactate in plasma. In contrast, tambaqui with high lactate levels in plasma presented very low swimming performance. Therefore, we aimed to study the resistance of matrinchã and tambaqui to the increased lactate levels in muscle over an incremental velocity test (Ucrit). As a secondary aim, we analyzed the differences in anaerobic metabolism in response to environmental hypoxia, which could also support the better swimming performance of matrinchã, compared to tambaqui.MethodsWe measured, over incremented velocities in both species, the metabolic rate (the oxygen consumption by the fish; MO2), and the concentrations of lactate and nitrites and nitrates (NOx) in muscles. NOx was measured as an indicator of nitric oxide and its possible role in improving cardiorespiratory capacity in these fishes, which could postpone the use of anaerobic metabolism and lactate production during the swimming test. Also, we submitted fishes until fatigue and hypoxia (0.5 mg L−1) and measured, in addition to the previous parameters, lactate dehydrogenase activity (LDH; the enzyme responsible for lactate production), since that swimming performance could also be explained by the anaerobic capacity of producing ATP.ResultsMatrinchã exhibited a better swimming performance and higher oxygen consumption rates. Lactate levels were higher in matrinchã only at the moment of fatigue. Under hypoxia, LDH activity increased in the white muscle only in tambaqui, but averages were always higher in matrinchã.Discussion and conclusionsThe results suggest that matrinchã is more resistant than tambaqui regarding lactate accumulation in muscle at the Ucrit test, but it is not clear how much it contributes to postpone fatigue. The higher metabolic rate possibly allows the accumulated lactate to be used as aerobic fuel by the matrinchã, improving swimming performance. More studies are needed regarding matrinchã’s ability to oxidize lactate, the effects of exercise on muscle acidification, and the hydrodynamics of these species, to clarify why matrinchã is a better swimmer than tambaqui.
Differential effects of alcohol on associative versus item memory
Authors: Maylor Elizabeth A. , Long Hannah R. , Newstead Rhianne A. 
Published: October 2018

SummaryAlcohol has detrimental effects on a range of cognitive processes, the most prominent being episodic memory. These deficits appear functionally similar to those observed within the normal aging population. We investigated whether an associative memory deficit, as found in older adults, would also be evident in young adults moderately intoxicated by alcohol. Participants were shown unrelated word pairs and then tested on both their item recognition (old/new item?) and associative recognition (intact/recombined pair?). Half the participants were under the influence of alcohol whereas the other half were sober. Alcohol impaired memory performance but significantly more so for associative than for item memory. Moreover, within the alcohol group, the associative memory deficit was significantly related to the amount of alcohol consumed. The findings suggest that not all aspects of episodic memory are equally impaired by alcohol, which may have practical implications for criminal investigations involving eye witnesses who have consumed alcohol.
Single Silicon Nanowire‐Based Fluorescent Sensor for Endogenous Hypochlorite in an Individual Cell
Authors: Cao Xingxing , Mu Lixuan , Chen Min , Bu Congcong , Liang Sen , She Guangwei , Shi Wensheng 
Published: October 2018

AbstractAs a prototype of a single‐cell detecting technique, a single silicon nanowire‐based (SiNW‐based) fluorescent sensor for endogenous hypochlorite in a macrophage is constructed. The fluorescent sensor for hypochlorite is prepared by decorating a near‐infrared dye, IR780 onto the surface of SiNWs. The sensor exhibits high sensitivity and linear dependence of the fluorescence intensities on the hypochlorite concentrations. With the help of micromanipulation and laser scanning confocal microscopy, detection of endogenous hypochlorite in a single macrophage is realized by penetrating the single SiNW‐based sensor into individual cells. The current SiNW‐based sensor will possess potential value in revealing the role of hypochlorite in physiology and pathology. Such single‐cell detecting techniques can be expanded to other fields. This work will open a new door to a variety of novel studies by combining the strengths of single‐cell detecting techniques with biology.
Hydrogel Electrolytes for Flexible Aqueous Energy Storage Devices
Authors: Wang Zifeng , Li Hongfei , Tang Zijie , Liu Zhuoxin , Ruan Zhaoheng , Ma Longtao , Yang Qi , Wang Donghong , Zhi Chunyi 
Published: October 2018

AbstractHydrogel materials are receiving increasing research interest due to their intriguing structures that consist of a crosslinked network of polymer chains with interstitial spaces filled with solvent water. This feature endows the materials with the characteristics of being both wet and soft, making them ideal candidates for electrolyte materials for flexible energy storage devices, such as supercapacitors and rechargeable batteries that are under intensive studies nowadays. More importantly, the highly abundant and tunable chemistries of these hydrogels allow the introduction of novel functionalities into the existing hydrogels so that it is possible to fabricate unprecedented energy storage devices with additional functions. Here, the state‐of‐the‐art advances of the hydrogel materials for flexible energy storage devices including supercapacitors and rechargeable batteries are reviewed. In addition, devices with various kinds of functions, such as self‐healing, shape memory, and stretchability, are also included to stress the critical role of hydrogel materials. Furthermore, the challenges embedded in the current technologies are also highlighted and discussed with the hope to continually boost future research for the fast‐developing field.
Thermally Responsive Microfibers Mediated Stem Cell Fate via Reversibly Dynamic Mechanical Stimulation
Authors: Zhang Jianguang , Cheng Chong , Cuellar‐Camacho Jose Luis , Li Mingjun , Xia Yi , Li Wenzhong , Haag Rainer 
Published: October 2018

AbstractThe role of mechanical forces is crucial for stem cell adhesion, viability, proliferation, self‐renewal, and differentiation. The relationship between the natural extracellular matrix mechanics and cell behavior is dynamic, such as compressive stress from skeletal muscle contraction. Thus, relatively little is known about how stem cells respond to reversibly dynamic mechanical stimulation (RD‐MS) in a 3D fiber network. Here, thermosensitive electrospun microfibrous cross‐linked hydrogels are investigated from variants of polycaprolactone and poly(N‐isopropylacrylamide) in which the mechanosensing can be in situ thermo‐induced switched from stiff (37 °C) to soft (25 °C) for multiple cycles. It is found that human mesenchymal stem cells seeded in bioengineered fibrillar microenvironments with multicyclic RD‐MS result in an increased cell spreading area and polarization. This 3D cell shape deformation can ultimately alter the intracellular signaling related to the differentiation. Combining with mechanosensing computer simulations, a positive correlation between the elongated morphology and the cycles of RD‐MS is predicted, suggesting that the cell polarization is proportional to dynamic changes of local stiffness and geometric fiber density of the fiber network. This study reveals RD‐MS as a key design parameter for biomaterial scaffolds as well to control cell behavior in tissue engineering applications.
Heterostructures of MOFs and Nanorods for Multimodal Imaging
Authors: Zhang Hongyu , Hao Changlong , Qu Aihua , Sun Maozhong , Xu Liguang , Xu Chuanlai , Kuang Hua 
Published: October 2018

AbstractMultifunctional heterostructures fabricated by assembling individual components are identified as a potential theranostic tool in biological fields, representing a strategy of great significance. Herein, heterodimers of the zeolitic imidazolate framework (ZIF)‐8 and gold nanorods (Au NRs) are designed and synthesized for collaborative photothermal treatment and chemotherapy triggered by near‐infrared (NIR) light. Furthermore, Ag2S, Ag2Se, upconversion fluorescent nanoparticles, and doxorubicin hydrochloride loaded into the ZIF‐8 are released after intravenous injection. This release is attributed to the pH‐responsive system, which simultaneously enabled computed tomography, photoacoustic, and NIR fluorescence imaging for tumors. Under NIR irradiation using an 808 nm laser, the tumor can be completely eliminated in vivo through multimodal imaging‐guided chemophotothermal treatment. Overall, the present study makes several noteworthy contributions to the efficient diagnosis and treatment of cancer using the metal‐organic framework‐assisted heterodimer as a versatile nanoplatform.
N‐Doped Carbon‐Coated Ni1.8Co1.2Se4Nanoaggregates Encapsulated in N‐Doped Carbon Nanoboxes as Advanced Anode with Outstanding High‐Rate and Low‐Temperature Performance for Sodium‐Ion Half/Full Batteries
Authors: Hou Bao‐Hua , Wang Ying‐Ying , Liu Dao‐Sheng , Gu Zhen‐Yi , Feng Xi , Fan Haosen , Zhang Tuofeng , Lü Changli , Wu Xing‐Long 
Published: October 2018

AbstractTransition metal selenides have been attracting significant attention owing to their high conductivity and theoretical capacity. In this article, the N‐doped carbon (NDC)‐coated Ni1.8Co1.2Se4nanoparticles encapsulated in NDC nanoboxes are prepared from the bi‐metal organic framework (Ni3[Co(CN)6]2·6H2O, Ni‐Co BMOF) after the selenization reaction and carbon coating. When used as an anode material for sodium‐ion batteries, the prepared anode material delivers excellent rate performance (211 and 153 mA h g−1at ultrahigh current densities of 30 and 50 A g−1, respectively) and good cycling performance (379.3 mA h g−1at 0.5 A g−1after 100 cycles). More importantly, it also exhibits superior sodium‐ion full cell (SIFC) performance when coupled with a high‐voltage Na3V2(PO4)2O2F cathode recently self‐made by the authors. The fabricated SIFC gives an energy density up to 227 W h kg−1and the capacity retention of above 97.6% even after 60 cycles at 0.4 A g−1in a voltage range of 1.2–4.3 V at 25 °C. Moreover, the low‐temperature (from 25 to −25 °C) Na‐storage performance of the fabricated SIFC is also studied.
Advanced Carbon for Flexible and Wearable Electronics
Authors: Wang Chunya , Xia Kailun , Wang Huimin , Liang Xiaoping , Yin Zhe , Zhang Yingying 
Published: October 2018

AbstractFlexible and wearable electronics are attracting wide attention due to their potential applications in wearable human health monitoring and care systems. Carbon materials have combined superiorities such as good electrical conductivity, intrinsic and structural flexibility, light weight, high chemical and thermal stability, ease of chemical functionalization, as well as potential mass production, enabling them to be promising candidate materials for flexible and wearable electronics. Consequently, great efforts are devoted to the controlled fabrication of carbon materials with rationally designed structures for applications in next‐generation electronics. Herein, the latest advances in the rational design and controlled fabrication of carbon materials toward applications in flexible and wearable electronics are reviewed. Various carbon materials (carbon nanotubes, graphene, natural‐biomaterial‐derived carbon, etc.) with controlled micro/nanostructures and designed macroscopic morphologies for high‐performance flexible electronics are introduced. The fabrication strategies, working mechanism, performance, and applications of carbon‐based flexible devices are reviewed and discussed, including strain/pressure sensors, temperature/humidity sensors, electrochemical sensors, flexible conductive electrodes/wires, and flexible power devices. Furthermore, the integration of multiple devices toward multifunctional wearable systems is briefly reviewed. Finally, the existing challenges and future opportunities in this field are summarized.
Advanced Materials for Next‐Generation Spacecraft
Authors: Levchenko Igor , Bazaka Kateryna , Belmonte Thierry , Keidar Michael , Xu Shuyan 
Published: October 2018

AbstractSpacecraft are expected to traverse enormous distances over long periods of time without an opportunity for maintenance, re‐fueling, or repair, and, for interplanetary probes, no on‐board crew to actively control the spacecraft configuration or flight path. Nevertheless, space technology has reached the stage when mining of space resources, space travel, and even colonization of other celestial bodies such as Mars and the Moon are being seriously considered. These ambitious aims call for spacecraft capable of self‐controlled, self‐adapting, and self‐healing behavior. It is a tough challenge to address using traditional materials and approaches for their assembly. True interplanetary advances may only be attained using novel self‐assembled and self‐healing materials, which would allow for realization of next‐generation spacecraft, where the concepts of adaptation and healing are at the core of every level of spacecraft design. Herein, recent achievements are captured and future directions in materials‐driven development of space technology outlined.
Aromatic‐Diimide‐Based n‐Type Conjugated Polymers for All‐Polymer Solar Cell Applications
Authors: Yang Jing , Xiao Bo , Tang Ailing , Li Jianfeng , Wang Xiaochen , Zhou Erjun 
Published: October 2018

AbstractAll‐polymer solar cells (all‐PSCs) have attracted immense attention in recent years due to their advantages of tunable absorption spectra and electronic energy levels for both donor and acceptor polymers, as well as their superior thermal and mechanical stability. The exploration of the novel n‐type conjugated polymers (CPs), especially based on aromatic diimide (ADI), plays a vital role in the further improvement of power conversion efficiency (PCE) of all‐PSCs. Here, recent progress in structure modification of ADIs including naphthalene diimide (NDI), perylene diimide (PDI), and corresponding derivatives is reviewed, and the structure–property relationships of ADI‐based CPs are revealed.
Nanoenvelopes: Wrapping a Single‐Walled Carbon Nanotube with Graphene using an Atomic Force Microscope
Authors: Hu Xiao , Wei Hang , Liu Jia , Zhang Jian , Chi Xiannian , Jiang Peng , Sun Lianfeng 
Published: October 2018

AbstractEngineering the morphology and structure of low‐dimensional carbon nanomaterials is important to study their mechanical and electrical properties and even superconductivity. Herein, first the techniques that are used to engineer carbon nanotubes, including manipulation, morphology modification, and fabrication of complex nanostructures, are reviewed. This is followed by a summary of the methods applied to fabricate graphene nanostructures, such as heterostructures and nanoenvelopes of graphene. Lastly, an insight into the applications of low‐dimensional‐carbon‐based electronics is given, such as carbon nanotube (CNT) transistors, graphene‐based nanoenvelopes, and graphene‐contacted CNT field‐effect transistors (FETs), which are promising components in future electronics.
Circularly Polarized Luminescent Carbon Dot Nanomaterials of Helical Superstructures for Circularly Polarized Light Detection
Authors: Zheng Hongzhi , Ju Bo , Wang Xiaojun , Wang Wenhui , Li Minjie , Tang Zhiyong , Zhang Sean Xiao‐An , Xu Yan 
Published: October 2018

AbstractCircularly polarized luminescent carbon dot nanomaterials of self‐organized helical superstructures based on cellulose nanocrystals enable strong, right‐handed, and multicolor tunable circularly polarized luminescence with extraordinary dissymmetry factors up to −0.74. The effects of emission intensity and carbon dots loading on the strength of the right‐handed circularly polarized luminescence are experimentally observed and theoretically explained. Potentials of the carbon dots–cellulose nanomaterials for circularly polarized light detection are demonstrated.
The Renaissance of Luminescent Solar Concentrators: The Role of Inorganic Nanomaterials
Authors: Mazzaro Raffaello , Vomiero Alberto 
Published: October 2018

AbstractWhile luminescent solar concentrators (LSCs) have a simple architecture—a transparent matrix embedding a luminescent fluorophore coupled with solar cells at the lateral side of the LSC slab—multiple paths for possible light losses exist. These are inherently interconnected, and in the past, limited the interest in this device, due to the gap between the theoretical possibilities and experimental achievements. This gap was a result, primarily, of the optical features of the luminescent dyes, since conventional organic luminophores are affected by limited performance in LSC devices. The rise of a wide portfolio of optically active inorganic nanomaterials in the last decade provides an alternative to organic dyes and has lead to a renaissance in the role of LSCs among the unconventional solar energy conversion devices. This paper reviews the latest results in the development of LSCs based on different classes of nanomaterials, focusing on the specific features and critically analyzing the pros and cons of the proposed structures. Particular attention is devoted to the role of the luminescence properties, e.g., the Stokes shift and the photoluminescence quantum yield, with respect to the performance of the LSC device. Future challenges to the successful employment of these devices for building integrated photovoltaics are also discussed.
Selective Nitrogen‐Atom Transfer Driven by a Highly Efficient Intersystem Crossing in the [CeON]+/CH4 System
Authors: Zhou Shaodong , Sun Xiaoyan , Yue Lei , Guo Cheng , Schlangen Maria , Schwarz Helmut 
Published: October 2018

AbstractThe thermal gas‐phase reactions of [CeON]+ with methane have been explored by FT‐ICR mass spectrometry and high‐level quantum‐chemical calculations. Nitrogen‐atom transfer from the cluster ion to methane was observed as the only reaction channel. Based on computational work, the neutral molecule formed corresponds to either CH2NH2 or CH3NH. In addition to a rather weak OCe+−N bond, this reaction benefits from a highly efficient intersystem crossing. Mechanistic aspects and the associated electronic origins are discussed, and a detailed comparison of [CeON]+, [CeO]+, [CeN]+, [CeO2]+, and atomic N in their reactions with CH4 is given.
Polymeric Acidic Ionic Liquid‐Functionalized SBA‐15 as a Solid Catalyst for Production of Low‐Calorie Structured Lipids
Authors: Xie Wenlei , Zhang Chi , Wang Hongyan 
Published: October 2018

AbstractThe aim of this study is to develop a clean and environmentally friendly process for production of low‐calorie structured lipids in accordance with the requirement of cleaner production and sustainable developments. To achieve this, polymeric acidic ionic liquid (IL)‐functionalized SBA‐15 catalysts were prepared by surface grafting copolymerization of IL 1‐propylsulfonate‐3‐vinylimidazolium hydrogen sulfate onto the SBA‐15 support using azobisisobutyronitrile (AIBN) as an initiator. The as‐prepared solid catalysts were fully characterized using several techniques. Results demonstrated that the polymeric acidic IL was successfully tethered on the SBA‐15 silica, and the mesoporous structure of the SBA‐15 support remained intact after the grafting copolymerization. The solid catalyst showed high activities in the soybean oil acidolysis with capric and caprylic acids. The acidolysis products were analyzed by a gas chromatographic method, and the incorporation of medium‐chain fatty acids into soybean triacylglycerols was 53.4% over this solid catalyst. Furthermore, the solid catalyst could be recycled several times without appreciable loss of its activity.
Evaluation of the attractant effect and lipid profile modulation of natural fixed oils on the medfly Ceratitis capitata (Wiedemann)
Authors: Rosa Antonella , Piras Alessandra , Carta Gianfranca , Solari Paolo , Crnjar Roberto , Masala Carla 
Published: October 2018

AbstractThe Mediterranean fruit fly, Ceratitis capitata (Wiedemann, 1824; Diptera: Tephritidae), is a polyphagous pest in horticulture, mainly targeting Citrus fruits. Natural essential and fixed oils are currently under investigation for their broad‐spectrum in pest control. To gain better knowledge about medfly behavior and biochemistry, we examined with behavioral and biochemical assays, the effects on C. capitata from six natural fixed oils obtained from vegetable (five) or animal (one) matrices using the eco‐friendly supercritical CO
2 extraction. Oils were obtained at 250/300 bar and 40°C from the seeds of Laurus nobilis and Citrus paradisi, the fruits of Myristica fragrans and Pistacia terebinthus, wheat germ, and mullet roes (marine oil). Behavioral experiments were performed by means of two‐choice tests to analyze the oil attractant effect compared with control (water or standard diet). The fatty acid composition of oils and the total lipid and fatty acid profile of medflies were characterized by chromatographic techniques. Behavioral bioassays showed that fixed oil obtained from M. fragrans (nutmeg butter) was more attractive than other oils. Medflies fed (24 hr) on marine oil showed significant changes in the total lipid and fatty acid profile induced by oil ingestion without toxic effects. However, 56% mortality was observed in insects fed on M. fragrans oil and no biochemical changes ascribable to oil ingestion were detected in the medflies that survived. Our results advance knowledge about the behavioral and biochemical response of medflies to fixed oils and will be potentially useful in developing new pest management strategies.
The Design of a Coprime‐Factorized Predictive Functional Controller for Unstable Fractional Order Systems
Authors: Sanatizadeh Mahsa , Bigdeli Nooshin 
Published: October 2018

AbstractIn this paper, a new approach, called coprime‐factorized predictive functional control method (CFPFC‐F) is proposed to control unstable fractional order linear time invariant systems. To design the controller, first, a prediction model should be synthesized. For this purpose, coprime‐factorized representation is extended for unstable fractional order systems via a reduced approximated model of unstable fractional order (FO) system. That is, an approximated integer model of fractional order system is derived via the well‐known Oustaloup method. Then, the high order approximated model is reduced to a lower one via a balanced truncation model order reduction method. Next, the equivalent coprime‐factorized model of the unstable fractional‐order plant is employed to predict the output of the system. Then, a predictive functional controller (PFC) is designed to control the unstable plant. Finally, the robust stability of the closed‐loop system is analyzed via small gain theorem. The performance of the proposed control is investigated via simulations for the control of an unstable non‐laminated electromagnetic suspension system as our simulation test system.