bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparative analysis of the demographic parameters of seven spotted ladybird beetle (Coleoptera: Coccinellidae) reared on various host aphid species
Authors: Farooq Muhammad , Zhu Xun , Shakeel Muhammad , Iftikhar Ayesha , Shahid Muhammad Rafiq , Saeed Nadia , Arain Muhammad Shahid 
Published: January 2020

Background
The demographic parameters of the predacious seven spotted ladybird beetle Coccinella septempunctata Linnaeus (Coleoptera: Coccinellidae) reared on the following four host aphid species were compared: Rhopalosiphum padi Linnaeus (Hemiptera: Aphididae), Rhopalosiphum maidis Fitch (Hemiptera: Aphididae), Sitobion avenae Fabricius (Hemiptera: Aphididae), and Schizaphis graminum Rondani (Hemiptera: Aphididae).

Methods
The developmental period, fecundity, adult preoviposition period, total preoviposition period and population parameters were evaluated based on the two-sex age-stage life table. The duration of the developmental stages and the population parameters were calculated with the TWOSEX-MSChart program, whereas population size was projected based on the two-sex age-stage life table data with the TIMING-MSChart program.

Results
The intrinsic rate of increase (r) was the highest in the R. padi predators (0.1946 per day), followed by the S. graminum (0.1435 per day), S. avenae (0.1400 per day), and R. maidis (0.1180 per day) predators. The differences in the net reproductive rate (R0) and the finite rate of increase (λ) when C. septempunctata was reared on the four aphid species were consistent with the r values. This trend was reversed for the mean generation time (T), which ranged from 29.02 days for the lady beetles reared on R. padi to 39.75 days for the lady beetles reared on R. maidis. Interestingly, R. padi was the most suitable host, while the congeneric R. maidis was the least suitable. The results of this study may be useful for future investigations regarding the ecological effects of predatory species and the mass-production of C. septempunctata in the laboratory for an augmentative release of an aphid predator.
Identification of key biomarkers and immune infiltration in the synovial tissue of osteoarthritis by bioinformatics analysis
Authors: Cai Weisong , Li Haohuan , Zhang Yubiao , Han Guangtao 
Published: January 2020

Background
Osteoarthritis (OA) is the most common chronic degenerative joint disease and is mainly characterized by cartilage degeneration, subcartilage bone hyperplasia, osteophyte formation and joint space stenosis. Recent studies showed that synovitis might also be an important pathological change of OA. However, the molecular mechanisms of synovitis in OA are still not well understood.

Objective
This study was designed to identify key biomarkers and immune infiltration in the synovial tissue of osteoarthritis by bioinformatics analysis.

Materials and Methods
The gene expression profiles of GSE12021, GSE55235 and GSE55457 were downloaded from the GEO database. The differentially expressed genes (DEGs) were identified by the LIMMA package in Bioconductor, and functional enrichment analyses were performed. A protein-protein interaction network (PPI) was constructed, and module analysis was performed using STRING and Cytoscape. The CIBERSORT algorithm was used to analyze the immune infiltration of synovial tissue between OA and normal controls.

Results
A total of 106 differentially expressed genes, including 68 downregulated genes and 38 upregulated genes, were detected. The PPI network was assessed, and the most significant module containing 14 hub genes was identified. Gene Ontology analysis revealed that the hub genes were significantly enriched in immune cell chemotaxis and cytokine activity. KEGG pathway analysis showed that the hub genes were significantly enriched in the rheumatoid arthritis signaling pathway, IL-17 signaling pathway and cytokine-cytokine receptor interaction signaling pathway. The immune infiltration profiles varied significantly between osteoarthritis and normal controls. Compared with normal tissue, OA synovial tissue contained a higher proportion of memory B cells, naive CD4+ T cells, regulatory T cells, resting dendritic cells and resting mast cells, while naive CD4+ T cells, activated NK cells, activated mast cells and eosinophils contributed to a relatively lower portion (P > 0.05). Finally, the expression levels of 11 hub genes were confirmed by RT-PCR.

Conclusion
The hub genes and the difference in immune infiltration in synovial tissue between osteoarthritis and normal controls might provide new insight for understanding OA development.
Three Electron Reversible Redox Reaction in Sodium Vanadium Chromium Phosphate as a High‐Energy‐Density Cathode for Sodium‐Ion Batteries
Authors: Zhao Yongjie , Gao Xiangwen , Gao Hongcai , Jin Haibo , Goodenough John B. 
Published: January 2020

AbstractA sodium‐ion battery operating at room temperature is of great interest for large‐scale stationary energy storage because of its intrinsic cost advantage. However, the development of a high capacity cathode with high energy density remains a great challenge. In this work, sodium super ionic conductor‐structured Na3V2−xCrx(PO4)3 is achieved through the sol–gel method; Na3V1.5Cr0.5(PO4)3 is demonstrated to have a capacity of 150 mAh g−1 with reversible three‐electron redox reactions after insertion of a Na+, consistent with the redox couples of V2+/3+, V3+/4+, and V4+/5+. Moreover, a symmetric sodium‐ion full cell utilizing Na3V1.5Cr0.5(PO4)3 as both the cathode and anode exhibits an excellent rate capability and cyclability with a capacity of 70 mAh g−1 at 1 A g−1. Ex situ X‐ray diffraction analysis and in situ impedance measurements are performed to reveal the sodium storage mechanism and the structural evolution during cycling.
3D‐Printed Structure Boosts the Kinetics and Intrinsic Capacitance of Pseudocapacitive Graphene Aerogels
Authors: Yao Bin , Chandrasekaran Swetha , Zhang Haozhe , Ma Annie , Kang Junzhe , Zhang Lei , Lu Xihong , Qian Fang , Zhu Cheng , Duoss Eric B. , Spadaccini Christopher M. , Worsley Marcus A. , Li Yat 
Published: January 2020

AbstractThe performance of pseudocapacitive electrodes at fast charging rates are typically limited by the slow kinetics of Faradaic reactions and sluggish ion diffusion in the bulk structure. This is particularly problematic for thick electrodes and electrodes highly loaded with active materials. Here, a surface‐functionalized 3D‐printed graphene aerogel (SF‐3D GA) is presented that achieves not only a benchmark areal capacitance of 2195 mF cm−2 at a high current density of 100 mA cm−2 but also an ultrahigh intrinsic capacitance of 309.1 µF cm−2 even at a high mass loading of 12.8 mg cm−2. Importantly, the kinetic analysis reveals that the capacitance of SF‐3D GA electrode is primarily (93.3%) contributed from fast kinetic processes. This is because the 3D‐printed electrode has an open structure that ensures excellent coverage of functional groups on carbon surface and facilitates the ion accessibility of these surface functional groups even at high current densities and large mass loading/electrode thickness. An asymmetric device assembled with SF‐3D GA as anode and 3D‐printed GA decorated with MnO2 as cathode achieves a remarkable energy density of 0.65 mWh cm−2 at an ultrahigh power density of 164.5 mW cm−2, outperforming carbon‐based supercapacitors operated at the same power density.
Highly Flexible Fabric‐Based Organic Light‐Emitting Devices for Conformal Wearable Displays
Authors: Yin Da , Chen Zhi‐Yu , Jiang Nai‐Rong , Liu Yue‐Feng , Bi Yan‐Gang , Zhang Xu‐Lin , Han Wei , Feng Jing , Sun Hong‐Bo 
Published: January 2020

AbstractOrganic light‐emitting devices on fabrics (Fa‐OLEDs) are outstanding candidates for high‐quality wearable displays. High flexibility and conformality to clothes deformations are required for Fa‐OLEDs to keep wearing comfort during body movement. However, it is a great challenge to realize an ultrathin planarization layer with ultrasmooth surface simultaneously on the rough surface of fabrics for Fa‐OLEDs fabrication. Here, a template‐stripping process is employed to fabricate both ultrathin and ultrasmooth planarization layers for highly flexible and efficient Fa‐OLEDs. The thickness of the planarization layer is as small as 3 µm while its surface roughness is only 0.6 nm. The planarization process is insensitive to the textures and morphology of fabrics. As a result, the Fa‐OLEDs show excellent electroluminescent performance and flexibility. The maximum current efficiency of 78 cd A−1 is comparable with that of the conventional planar devices. The variation of current efficiency is as small as 8% after 1000 times of bending with 1 mm bending radius, which is the best bending stability of the flexible Fa‐OLEDs reported to date. The Fa‐OLEDs are successfully used as conformal wearable displays by sewing on clothes and keep working well with a series of arm movements.
Dual‐Mode Wearable Strain Sensor Based on Graphene/Colloidal Crystal Films for Simultaneously Detection of Subtle and Large Human Motions
Authors: Xu Hua , Zhang Ming Kun , Lu Yi Fei , Li Jia Jia , Ge Si Jia , Gu Zhong Ze 
Published: January 2020

AbstractWearable strain sensors with high sensitivity and broad sensing ranges to detect both subtle and large human motion are highly desirable in health monitoring systems. Here, a novel, dual‐mode strain sensor based on the reduced graphene oxide (rGO)/polydimethlsiloxane (PDMS) film adhered to micropatterning elastomer colloidal crystal film is proposed to realize these goals. The rGO/PDMS film is designed for detecting subtle human motion via its resistance change, while the colloidal crystal film is used for detecting large human motion via its simple colorimetric changes or reflection peak shifts and simultaneously as a microstructured substrate for graphene film to improve their sensitivity. Investigation of their detection ability displays that the colloidal crystal film exhibits a wide sensing range up to 68.2% strain and the rGO/PDMS film demonstrates a high gauge factor value of 4.78 within 30% strain with rapid response time and excellent reversibility. Such superior performance endows the dual‐mode sensor for detecting various large human joint movements and subtle human physiological motions. This research provides new insights into the design and fabrication of high‐performance strain sensor for full‐range human motions' detection and the proposed sensor has great potential for application in human motion recognition and healthcare monitoring.
Steric Poly(diarylfluorene‐co‐benzothiadiazole) for Efficient Amplified Spontaneous Emission and Polymer Light‐Emitting Diodes: Benefit from Preventing Interchain Aggregation and Polaron Formation
Authors: Bai Lubing , Sun Chen , Han Yamin , Wei Chuanxin , An Xiang , Sun Lili , Sun Ning , Yu Mengna , Zhang Kangning , Lin Jinyi , Xu Man , Xie Linghai , Ling Haifeng , Cabanillas‐Gonzalez Juan , Song Ling , Hao Xiaotao , Huang Wei 
Published: January 2020

AbstractThe effect of introducing side‐chain steric hindrance on the optoelectronic properties of the well‐studied green light emitting polymer (poly(9,9‐di‐n‐octylfluorene‐alt‐benzothiadiazole), F8BT) is investigated by means of replacing the 9,9‐dioctylfluorene unit by two novel steric hindrance functionalized monomers, namely, poly(9,9‐diarylfluorene‐alt‐benzothiadiazole) (FDFBT) and poly(9,9‐diarylfluorene‐4‐carbazole‐alt‐benzothiadiazole) (FCzBT). Bathochromic shifts of the optical spectra concomitant with enhanced photoluminescence quantum yields and improved film morphologies are found on the novel copolymers compared to F8BT. Femtosecond transient absorption spectroscopy demonstrates how steric hindrance effect in the novel copolymers manifests into enhanced stimulated emission and longer excited state lifetimes, associated with the suppression of polaron formation, all these being favorable features for light amplifying applications. Consequently, random lasing emission is achieved in films based on these copolymers with a threshold of three times lower than that of F8BT (22.95 µJ cm−2 for F8BT; 6.36 µJ cm−2 for FDFBT and 8.44 µJ cm−2 for FCzBT). Polymer light‐emitting diodes based on the novel copolymers exhibit performances comparable to the best reported on fluorene‐based devices. All of these results manifest the great potential of these novel copolymers for the application in the field of light‐emitting devices.
Van der Waals Heterostructures with Tunable Tunneling Behavior Enabled by MoO3 Surface Functionalization
Authors: Wang Yanan , Xiang Du , Zheng Yue , Liu Tao , Ye Xin , Gao Jing , Yang Hang , Han Cheng , Chen Wei 
Published: January 2020

AbstractHeterostructures of 2D materials represent a powerful material platform that has essentially defined the technological foundation for all modern electronic and optoelectronic devices. Although most of the reported heterostructures devices exhibit extraordinary electronic and optoelectronic properties, they depend on the proper combination of selected materials, which limits the broad tunability of the devices. Herein, it is demonstrated that a vertical van der Waals heterostructures (vdWHs) device, which is composed of MoS2 and MoTe2, can function as a backward tunneling diode, photovoltaic cell, and photodetector through surface functionalization of MoO3. The realization of this backward tunneling diode is attributed to the band alignment variation from type II to type III via in situ MoO3 functionalization. Furthermore, the power conversion efficiency of this vdWHs based photovoltaic device is significantly enhanced by nearly four times, benefiting from the more efficient photocarrier separation after MoO3 decoration. The enhanced photovoltaic effect can be retained even after air exposure, revealing the excellent air stability. Meanwhile, the modified vdWHs device exhibits the photodetecting property with photocurrent responsivity of around 2 A W−1 and external quantum efficiency about 400%. This work promises surface functionalization as an effective approach to broaden the device functionality of 2D heterostructures in electronics and optoelectronics.
Noninterference Revealing of “Layered to Layered” Zinc Storage Mechanism of δ‐MnO2 toward Neutral Zn–Mn Batteries with Superior Performance
Authors: Jiang Yuqi , Ba Deliang , Li Yuanyuan , Liu Jinping 
Published: January 2020

AbstractMnO2 is one of the most studied cathodes for aqueous neutral zinc‐ion batteries. However, the diverse reported crystal structures of MnO2 compared to δ‐MnO2 inevitably suffer a structural phase transition from tunneled to layered Zn‐buserite during the initial cycles, which is not as kinetically direct as the conventional intercalation electrochemistry in layered materials and thus poses great challenges to the performance and multifunctionality of devices. Here, a binder‐free δ‐MnO2 cathode is designed and a favorable “layered to layered” Zn2+ storage mechanism is revealed systematically using such a “noninterferencing” electrode platform in combination with ab initio calculation. A flexible quasi‐solid‐state Zn–Mn battery with an electrodeposited flexible Zn anode is further assembled, exhibiting high energy density (35.11 mWh cm−3; 432.05 Wh kg−1), high power density (676.92 mW cm−3; 8.33 kW kg−1), extremely low self‐discharge rate, and ultralong stability up to 10 000 cycles. Even with a relatively high δ‐MnO2 mass loading of 5 mg cm−2, significant energy and power densities are still achieved. The device also works well over a broad temperature range (0–40 °C) and can efficiently power different types of small electronics. This work provides an opportunity to develop high‐performance multivalent‐ion batteries via the design of a kinetically favorable host structure.
Understanding Li‐Ion Dynamics in Lithium Hydroxychloride (Li2OHCl) Solid State Electrolyte via Addressing the Role of Protons
Authors: Song Ah‐Young , Turcheniuk Kostiantyn , Leisen Johannes , Xiao Yiran , Meda Lamartine , Borodin Oleg , Yushin Gleb 
Published: January 2020

AbstractLow‐melting‐point solid‐state electrolytes (SSE) are critically important for low‐cost manufacturing of all‐solid‐state batteries. Lithium hydroxychloride (Li2OHCl) is a promising material within the SSE domain due to its low melting point (mp < 300 °C), cheap ingredients (Li, H, O, and Cl), and rapid synthesis. Another unique feature of this compound is the presence of Li vacancies and rotating hydroxyl groups which promote Li‐ion diffusion, yet the role of the protons in the ion transport remains poorly understood. To examine lithium and proton dynamics, a set of solid‐state NMR experiments are conducted, such as magic‐angle spinning 7Li NMR, static 7Li and 1H NMR, and spin‐lattice T1(7Li)/T1(1H) relaxation experiments. It is determined that only Li+ contributes to long‐range ion transport, while H+ dynamics is constrained to an incomplete isotropic rotation of the OH group. The results uncover detailed mechanistic understanding of the ion transport in Li2OHCl. It is shown that two distinct phases of ionic motions appear at low and elevated temperatures, and that the rotation of the OH group controls Li+ and H+ dynamics in both phases. The model based on the NMR experiments is fully consistent with crystallographic information, ionic conductivity measurements, and Born–Oppenheimer molecular dynamic simulations.
3D Vertically Aligned Li Metal Anodes with Ultrahigh Cycling Currents and Capacities of 10 mA cm−2/20 mAh cm−2 Realized by Selective Nucleation within Microchannel Walls
Authors: Gao Xuejie , Yang Xiaofei , Adair Keegan , Li Xiaona , Liang Jianwen , Sun Qian , Zhao Yang , Li Ruing , Sham Tsun‐Kong , Sun Xueliang 
Published: January 2020

AbstractAlthough metallic lithium is regarded as the “Holy Grail” for next‐generation rechargeable batteries due to its high theoretical capacity and low overpotential, the uncontrollable Li dendrite growth, especially under high current densities and deep plating/striping, has inhibited its practical application. Herein, a 3D‐printed, vertically aligned Li anode (3DP‐VALi) is shown to efficiently guide Li deposition via a “nucleation within microchannel walls” process, enabling a high‐performance, dendrite‐free Li anode. Moreover, the microchannels within the microwalls are beneficial for promoting fast Li+ diffusion, supplying large space for the accommodation of Li during the plating/stripping process. The high‐surface‐area 3D anode design enables high operating current densities and high areal capacities. As a result, the Li–Li symmetric cells using 3DP‐VALi demonstrate excellent electrochemical performances as high as 10 mA cm−2/10 mAh cm−2 for 1500 h and 5 mA cm−2/20 mAh cm−2 for 400 h, respectively. Additionally, the Li–S and Li–LiFePO4 cells using 3DP‐VALi anodes present excellent cycling stability up to 250 and 800 cycles at a rate of 1 C, respectively. It is believed that these new findings could open a new window for dendrite‐free metal anode design and pave the way toward energy storage devices with high energy/power density.
Selective steam reforming of n‐dodecane over stable subnanometric NiPt clusters encapsulated in Silicalite‐1 zeolite
Authors: Zhang Bofeng , Tian Yajie , Chen Dali , Li Ling , Li Guozhu , Wang Li , Zhang Xiangwen , Liu Guozhu 
Published: January 2020

AbstractMultimetallic nanocatalysts have attracted increasing attention for steam reforming owing to highly exposed active sites, but often suffering from severe sintering. Herein, we design subnanometric Ni‐Pt bimetal clusters (ca. 1.7 nm) encapsulated in Silicalite‐1 zeolite (2Ni0.5Pt@S‐1) through ligand‐stabilized method to prevent sintering by fixing the metal into microporous channels. In the steam reforming of n‐dodecane test, 2Ni0.5Pt@S‐1 gave an excellent activity and stability with a decrease of conversion only 4% at 600°C for 4 hr, which was about a quarter that of 2Ni0.5Pt/S‐1 synthesized by co‐impregnation method, ascribing to superior sinter‐resistance of encapsulation structure. Moreover, 2Ni0.5Pt@S‐1 exhibited a higher H2 selectivity up to 69.9% than that of 2Ni0.5Pt/S‐1 (64.4%), owing to suppressed methanation reaction based on subnanometric clusters. Shape‐selective steam reforming of n‐dodecane and ofm‐xylene was also observed, because of m‐xylene could hardly diffuse into the zeolite channels due to its bulky molecular size, further preventing potential deactivation by tars in reforming process.
Kontinuierliche Extraktion benachbarter Metalle im Durchstrombetrieb – ein disruptiver ökonomischer Ansatz zur In‐situ‐Rohstoffgewinnung auf Asteroiden?
Authors: Hessel Volker , Tran Nam Nghiep , Orandi Sanaz , Asrami Mahdieh Razi , Goodsite Michael , Nguyen Hung 
Published: January 2020

AbstractUm eine In‐situ‐Rohstoffgewinnung (ISRU) auf Asteroiden zu realisieren, muss zunächst das Gewichts/Kosten‐Problem gelöst werden. Dafür wird es nötig sein, von Grund auf neue Technologien zu entwickeln. Basierend auf diesem Ansatz diskutiert dieser Aufsatz, inwiefern chemische Prozessintensivierung bei der Entwicklung disruptiver Technologien und Geschäftsmodelle im Bereich der ISRU helfen kann und inwiefern hiervon auch bestehende “Erd”‐Industrien und Raumfahrt‐Start‐Ups profitieren können. Die betrachtete disruptive Technologie ist die kontinuierliche Lösungsmittel‐basierte Mikroflow‐Extraktion, und als weiteres disruptives Element wird die Verwendung ionischer Flüssigkeiten diskutiert. Bei der untersuchten Weltraumtechnologie handelt es sich um den zukünftigen Asteroidenbergbau, und der Fokus liegt auf dem finalen Schritt: der Aufreinigung der abgebauten und ausgelaugten Metallmischung. Der ökonomische Schlüsselschritt wird definiert als die Reduktion der Menge des beim Asteroidenbergbau verwendeten Wassers. Dieser Aufsatz diskutiert die Effizienz und den Umfang möglicher Wege zur Wassereinsparung bis hin zum technologischen Limit der aktuell effizientesten Erd‐basierten Prozessintensivierungen in diesem Bereich und deren physikalische Limitierungen.
Low‐Fouling Fluoropolymers for Bioconjugation and In Vivo Tracking
Authors: Fu Changkui , Demir Baris , Alcantara Sheilajen , Kumar Vinod , Han Felicity , Kelly Hannah G. , Tan Xiao , Yu Ye , Xu Weizhi , Zhao Jiacheng , Zhang Cheng , Peng Hui , Boyer Cyrille , Woodruff Trent M. , Kent Stephen J. , Searles Debra J. , Whittaker Andrew K. 
Published: January 2020

AbstractThe conjugation of hydrophilic low‐fouling polymers to therapeutic molecules and particles is an effective approach to improving their aqueous stability, solubility, and pharmacokinetics. Recent concerns over the immunogenicity of poly(ethylene glycol) has highlighted the importance of identifying alternative low fouling polymers. Now, a new class of synthetic water‐soluble homo‐fluoropolymers are reported with a sulfoxide side‐chain structure. The incorporation of fluorine enables direct imaging of the homopolymer by 19F MRI, negating the need for additional synthetic steps to attach an imaging moiety. These self‐reporting fluoropolymers show outstanding imaging sensitivity and remarkable hydrophilicity, and as such are a new class of low‐fouling polymer for bioconjugation and in vivo tracking.
Adaptive finite time high‐order sliding mode observer for non‐linear fractional order systems with unknown input
Authors: Fanaee Navid 
Published: January 2020

AbstractIn the present study, the concept of homogeneity is extended for fractional‐order systems by applying Caputo's derivative definition. Then, a fractional‐order high‐order sliding mode observer is proposed for a class of nonlinear fractional‐order single input–output systems. The asymptotic stability of the observer is analyzed and its finite‐time stability is derived through homogeneity property followed by obtaining a bound for its convergence time. To improve performance and reduce the chattering phenomenon, a tuning rule is presented through Lyapunov stability criterion using finite dimensional approximation of diffusive representation of the system. Finally the efficiency of the proposed method is investigated through two simulation examples.