bluuebunny/crossref_metadata_2025 huggingface dataset:
P‐8.4: A Novel Non‐barrier‐film Quantum Dot Diffusion Plate in Backlight System
Authors: Liu Xiaodong , Zhu Xinyuan , Guo Junqiu , Ji Honglei , Huang Haitao
Published: October 2019

Compared with traditional LED backlight source, the quantum dot‐based backlight module has recently attracted extensive interest owing to their wider color gamut. Generally, quantum dots are sensitive to the external environment, and quantum dots in current commercial quantum dot film are usually protected by two barrier film layers to isolate the influence of external factors such as water and oxygen. In this report, a new quantum dot plate strategy was developed by a three‐layer co‐extrusion method without the use of any expensive barrier film. Quantum dots were homogeneous embedded in the polymeric matrix of the middle layer, and the upper and lower layer act as protective layers to avoid the destruction of external environment to quantum dots. Reliability tests demonstrate that this non‐barrier‐film quantum dot plate shows satisfactory stability comparable to the high‐barrier‐material‐based quantum dot films under conditions of blue‐LED irradiation, high temperature and high humidity.
P‐8.6: Research on Multifunctional Integrated Diffusion Plate in Backlight System
Authors: Ji Honglei , Guo Junqiu , Huang Haitao , Liu Xiaodong , Sun Pei
Published: October 2019

As one of key components of LCD device, backlight module can provide homogenized and high‐brightness light source for LCD panel. Generally, optical material in conventional straight down type backlight module include one diffusion plate and several functional optical films to further increase the homogenization of light source and the brightness of LCD panel. However, such multi‐film structure greatly increases not only the assemble complexity but also the cost of LCD device. Thus, it is desirable to integrate the multiple functions of these optical films in backlight module on single optical plate.

In this report, we design and prepare a new composite optical plate that combining the diffusion with brightness‐enhancement functions. Firstly, optical plate with three layers was prepared by a co‐extrusion method, the upper surface of first layer was imprinted with prisms to enhance the brightness, and the third layer was added light diffusion particles to homogenize the light. In order to further increase the brightness‐enhance effect, another brightness enhance film was then bonded on the surface of the first layer of the optical plate.

Obviously, the application of this multi‐functional composite optical plate will greatly reduce assembly complexity of LCD panel, improve the assembly efficiency and save the equipment investment and labour force, which finally reduces the cost of the whole backlight module. Therefore, the prepared composite optical plate meets the requirement of automatic manufacturing engineering and low cost of the backlight module industry, and has broad application prospects.
P‐9.2: Role of interlayers in inorganic perovskite thin films LEDs
Authors: Choi Won-Chul , Kanwat Anil , Moyen Eric , Jang Jin
Published: October 2019

Here, we report on the reduction of the exciton quenching in inorganic perovskite thin films based LEDs. Using a poly (ethylene oxide) (PEO) interlayer between the perovskite film and the electron transport layer (ETL) results in a 5‐fold improvement of the photo‐luminescence (PL) intensity. Without the interlayer, LEDs do not turn on, while when using an interlayer those exhibit a maximum current efficiency (CE) of 0.8 cd/A with a maximum luminescence (Lmax) of 1300 cd/m2. Moreover, after optimizing thickness of the ETL, moreover, the inorganic PeLEDs exhibit a CE of 7.7 cd/A and a Lmax of 11,300 cd/m2.
P‐9.3: The representation of monochromatic blue Micro‐LED arrays with 1984 ppi
Authors: Guo Enqing , Mi Lei , Wang Yan , Chen Bo , Tian Wenya , Liu Haiyan , Li Qing , Wang Chenggong , Xing Rubo
Published: October 2019

Blue InGaN/GaN Micro‐LED arrays based on silicon and sapphire substrates were fabricated respectively. The LED chips with 12.8 µm pixel pitch share a common n contactor in a 960*540 LED array. The driving current for a single LED chip with 8 µm mesa reaches as large as 20 mA, which indicates its current density is much larger than that of LEDs even in high power lighting application. Meanwhile, the reverse leakage current of a single 8µm size LED chip under ‐5V bias is below 10 pA, which falls within the range of a normal leakage current level for InGaN/GaN LED. The heat pressing bonding process between LED array and test backplane was also carried out for I‐V‐L test. The test results of LED arrays were presented.
P‐9.4: Hybrid Full Color Micro‐LED Displays with Quantum Dots
Authors: Wei Feng , Li Shang , Bai Xue , Liu Zhaojun
Published: October 2019

We propose a full color displays with high brightness blue Micro‐LED array, using red and green photoluminescence quantum dot as the color conversion material, and successfully begin this study with using a Mini‐LED array to excite red and green quantum dot to form a red and green picture.
P‐9.8: Voltage Controllable Multicolor Light‐emitting Diodes
Authors: Ren Beitao , Jiang Le , Fan Bowen , Yeung Fion , Kwok Hoi-Sing , Li Guijun
Published: October 2019

In this work, we demonstrate a light‐emitting diode with voltage‐controlled multicolor electroluminescence. The emission color can be finely tuned by the applied voltage, corresponding to a color change from red to orange, yellow and finally to green. Voltage‐controlled red‐green multicolor electroluminescence can take place in either the CsPbBr3 or CdSe QDs, depending on the ratio of the recombination zone between these two materials.
P‐9.9: Research on The New Display Technology ‐ Inkjet‐Printed Quantum Dot Display with Blue OLEDs
Authors: Li Dongze , Hu Zhiping , Peng Wenxiang , Zhang Shijie , Li Yuanyuan , Chen Shu-jhih , Lee Chia-Yu
Published: October 2019

Colloidal quantum dot (QD) display is expected to be promising technology for the next generation display due to the advantages of QDs. In this work, we designed and fabricated 6.6 inch inkjet printed red QD‐OLED device, 3‐stack blue OLEDs (BOLEDs) with top‐emission structure acted as backlight. Red QD layer acted as converted materials, which exhbitted high quantum efficiency, high luminance, high color purity and improved wide viewing angle of output emission. We believe that inkjet‐printed QD color convert layer with AMOLEDs would be promising candidate for next generation display in the near future.
P‐11.8: DCI‐P3 Representation by Using Nano‐IPS Technology
Authors: Kim Kyungil , Choi JongJin , Park YongHak , Shin JongSuk , Lee Dong-Jin , Kim GwangTae , Park JeongKi
Published: October 2019

DCI‐P3 color space for digital movie projection is replacing Adobe RGB color space in Wide Color Gamut (WCG) monitor market. Nano‐IPS technology can achieve DCI‐P3 color space by using new advanced phosphors which can enlarge red and green color coordinates in LED backlight unit. This technology does not need to use WCG color filter panel, but need to use general high transmittance color filter panel.
P‐11.9: Study on process conditions of planarization layer in FFS mode using a‐IGZO TFTs
Authors: Yuan Chun-Ge , Shi Yu , Huang Qiao , Li Zhu-Hui , Wang Kai-Jun , Zhang Li , Chen Shu-Jhih , Lee Chia-Yu
Published: October 2019

The the polymer film on array (PFA) as planarization layer is important in FFS(Fringe‐Field Switching) and COA(Color filter on Array)display mode,according to its liquid crystal alignment is horizontal. The planarization serves not only as a smooth surface for device build‐up,but also it can reduce parasitic capacitance between metal layers. In this paper,we found that the planarization layer is easily deamged by subsequent processes because it is organic. It found that when the silicon oxide (SIOx)as passivation layer slowly deposited on the common ITO upon planarization layer , the planarization layer would be damaged seriously.And the demage degree is related to siloxane content in PFA and subsequent layer incluse the common ITO electrode thickness and and passivation layer's process parameters and materials between common electrode and pixel electrode.
P‐11.11: The Study of Solving the Film Peeling in the Application of the LCD Technology
Authors: Li Ting , Tan Li , Chen Luqin , Li Xiaohu , Jiang Wei
Published: October 2019

An effective way to solve film peeling has been proposed in this paper. The stress change of ITO film surface structure caused by helium treatment has been discussed. Annealing of pixel ITO after the date process and changing the ratio of SiH4:NH3 flow rate can improve the interface stress and peeling. When the ratio of SiH4:NH3 is 0.188, the samples without spot mura has good performance.
P‐11.13: The Development of 27inch TFT LCD Large Size Outdoor Application
Authors: Qiang He , Yewen Wang , Chun Ye , Aishi Chen , Shengping Shi , Yanting Duan , Wei Ding , Jiacheng Xu , Zhijun Wang
Published: October 2019

This paper introduces the development and performance of 27 inch TFT LCD FHD GDM vertical screen for outdoor which was successfully fabricated with IGZO process. A systematic research of properties, problems and the corresponding solutions of developing large size professional display applied outdoor is demonstrated. Moreover, the application of IGZO‐TFT device in professional display will become prosperous.
P‐11.15: The Influence of chiral dopant on the Rewriting Speed of Optically Driving Liquid Crystal Display
Authors: Sang J. X. , Sun J. T. , Liu Y. , Zhang Y. H.
Published: October 2019

For a liquid crystal display device, like optically driving liquid crystal display (ODLCD), the response time plays a crucial role. In this paper, a new method is proposed to increase the rewriting speed of ODLCD. With chiral dopant mixing with the liquid crystal 5CB, the rewriting time can be increased by 1.5 times.
P‐13.1: Large‐Size Curvature Laminated Transparent Touch Display Vehicle Window in Rail Transit
Authors: Yali Jia , Sansan Ding , Peng Gao , Yuanmu Zhong , Yuwen Liu , Lin Lu , Yinmao Wang , Benhua Wu
Published: October 2019

Compared with the traditional window glass products, this paper provides a transparent touch display window with transparent display technology and capacitive touch technology, which shows the feasibility of the future vehicle window products for the first time. This paper systematically studies the system integration and application of transparent display, touch panel as well as traditional window glass. It solved the laminate technology and packaging technology problems of the large size curvature laminate "rigid + soft + rigid" without the defects such as the laminate bubbles and display defect. The experimental results of the fatigue load test, thermal shock and vibration test, and the reliability test fully meet the specifications of rail transit.
P‐13.3: The Analysis and Improvement of Dim Dark Line Caused By Vth Drift in AMOLED Full Contact Test
Authors: Yu AI , Xuewu XIE , Yuqing PENG , Xinzhu WANG
Published: October 2019

In this paper we investigated the dim dark line in AMOLED full contact test. The influence of EL aging and Vth drift were analyzed and compared, and the conclusion that Vth drift was the main reason which caused the dim dark line was achived. We also provided a solution that connecting the ESD ring to the ESD line in low voltage instead of connecting it to the VDD line in high voltage, and the dim dark line was eliminated effectively.
P‐13.10: The Influence of Refractive Index of ITO Thin Film on CIE Coordinate in White Organic Light‐Emitting Diodes
Authors: Duan Tingyuan , Huang Junsong , Zhu Ruhui , Zou Qinghua , Ren Jun , Ye Lankai
Published: October 2019

This paper mainly studies that CIE coordinate is closely related to characteristics of ITO film in WOLED. The thickness, extinction coefficient, refractive index and crystallinity of ITO have been tested, showing great relevance to CIE coordinate, among which the refractive index is the most major factor affecting the CIE coordinate.
P‐14.1: Solution‐Processed Light‐Emitting Diodes Based on Quasi‐Two‐Dimentional Perovskite
Authors: Wu Yongwei , Jiang Pei , Yang Guang , He Bo , Yin Yongming , Duan Miao , Lee Chia-Yu , Eric  , Chen Shu-Jhih , Zhou Hang , Zhang Shengdong
Published: October 2019

In this paper, solution‐processed quasi‐two‐dimentional perovskite LEDs (PeLEDs) with narrow green emission (FWHM = 22 nm) are successfully realized. The PeLEDs with TPBi as electron transporting‐materials (ETMs) exhibit a peak external quantum efficiency of 0.5% and the maximum brightness reaching 425 cd m‐2.
P‐14.2: Stretchable Transparent Electronic Circuit without Resistance Variation at 150% Strain Using Printing and Transfer Fabrication
Authors: Chen Xiaolian , Yuan Wei , Nie Shuhong , Guo Wenrui , Lin Yong , Su Wenming , Cui Zheng
Published: October 2019

A stretchable electronic circuit has been fabricated by electroplating Cu in imprinted grooves and transferred onto a stretchable substrate. The stretchable conductive trackes has fine dimensions down to 9 µm in width and excellent conductivity (<0.1 Ω/□ in sheet resistance). It demonstrates an outstanding stretchable performance, having no resistance variation at the strain of 150%. Moreover, the conductive circuits are of high transparency (82%) as well, because of the fine line dimension. Such stretchable circuits may have potential applications in stretchable micro‐LED or mini‐LED displays.
P‐15.2: A Study for Easy and Quick White Balance Adjustment in Laser Display Production
Authors: Hieda Keisuke , Maruyama Tomoyuki , Narusawa Fumio
Published: October 2019

White balance adjustment is crucially important but time‐consuming work in display production. In this paper, we point out challenges in white balance adjustment process and discuss how they can be resolved using the Discrete Centroid Wavelength Method, which was newly developed for laser‐display measurement.
P‐15.3: The Importance of Centroid Wavelength for the Image Quality Evaluation of Laser Displays
Authors: Hieda Keisuke , Maruyama Tomoyuki , Narusawa Fumio
Published: October 2019

The accuracy of a measurement method for the chromaticity and photometric quantity of laser displays using centroid wavelengths was experimentally verified. This method allows more accurate optical evaluation of laser displays in principle than the method using peak wavelengths which has been commonly known in the laser industry.
P‐16.2: Research on Capacitance of OGS Touch Panel Pattern
Authors: Zhang Xinxiu , Guo Zongjie , Xie Xiaodong , Xu Zouming , He Min , Ji Qiang
Published: October 2019

This essay mainly studied the capacitance of OGS touch panels of two different sensor patterns. First, the effects of channel width on capacitance are researched. And then the contributions of dummy layers to the capacitance are further explored. In the experiment, the pattern pitch is 4*4mm, and take the areas of channel as variables. In order to obtain the self‐capacitance and mutual‐capacitance of pattern channel, the simulations are performed by Q3D Extractor software.
P‐16.3: Research of the influence of OGM pattern design structure on capacitance
Authors: Qin Zeng , Zong-jie Guo , Tao-feng Xie , Qing-pu Wang , Wei Zhang , Bao-ran Li , Wen-jin Fan
Published: October 2019

This paper aims to research the influence of the metal mesh pattern design structure on capacitance. Firstly, the capacitance data of different pattern design products are collected. Through the Minitab analysis, it is presented that the Tx/Rx channel area, the Tx&Rx overlap area and the space size are significant factors for capacitance. Furthermore, three groups of experiment were designed, and the following conclusions were drew: the capacitance is positively correlated with the mesh width, negatively correlated with the space size, positively correlated with the mesh area of channel region.The research results have an important guiding role for OGM pattern design and touch‐related issue analysis.
P‐16.4: ESD mechanism research of capacitive touch display module
Authors: Zhang Wei , Guo Zong-jie , Xie Tao-feng , Fan Wen-jin , Wang Qing-pu , Zeng Qin , Wang Xian-hua , Wu Qi-di
Published: October 2019

The capacitive touch display module has a failure phenomenon after the Air ESD 10KV evaluation, and the ESD capability value of the touch panel sensor is 20KV. Based on this issue, this article studies the structure of the touch display module and analyzes the main factors affecting the ESD failure of touch display module products. At first, compared with other ESD OK products in terms of design and process parameters, it is found that the LCM does not fully cover the touch panel traces. In the next, we compare the difference between the touch display module and the touch panel, and the touch display module has conductive materials such as backlight iron parts. Then, we give the ESD mechanism analysis according to product differences, and four groups of experiments are designed to verify the ESD capability value. The results show that during the ESD test of the product, the touch panel traces that have not been effectively protected is discharged with the nearby LCM conductive materials, resulting in the breakdown of the traces. By an insulation film attached to the touch panel's sensor traces, We can increase the antistatic ability value of touch display module to 20KV.
Oxygen Vacancy‐Engineered PEGylated MoO3−x Nanoparticles with Superior Sulfite Oxidase Mimetic Activity for Vitamin B1 Detection
Authors: Chen Yuan , Chen Tongming , Wu Xiaoju , Yang Guowei
Published: October 2019

Sulfite oxidase (SuOx) is a molybdenum‐dependent enzyme that catalyzes the oxidation of sulfite to sulfate to maintain the intracellular levels of sulfite at an appropriate low level. The deficiency of SuOx would cause severe neurological damage and infant diseases, which makes SuOx of tremendous biomedical importance. Herein, a SuOx mimic nanozyme of PEGylated (polyethylene glycol)‐MoO3−x nanoparticles (P‐MoO3−x NPs) with abundant oxygen vacancies created by vacancy‐engineering is reported. Their level of SuOx‐like activity is 12 times higher than that of bulk‐MoO3. It is also established that the superior increased enzyme mimetic activity is due to the introduction of the oxygen vacancies acting as catalytic hotspots, which allows better sulfite capture ability. It is found that vitamin B1 (VB1) inhibits the SuOx mimic activity of P‐MoO3−x NPs through the irreversible cleavage by sulfite and the electrostatic interaction with P‐MoO3−x NPs. A colorimetric platform is developed for the detection of VB1 with high sensitivity (the low detection limit is 0.46 µg mL−1) and good selectivity. These findings pave the way for further investigating the nanozyme which possess intrinsic SuOx mimicing activity and is thus a promising candidate for biomedical detection.
Room‐Temperature Liquid Metal Confined in MXene Paper as a Flexible, Freestanding, and Binder‐Free Anode for Next‐Generation Lithium‐Ion Batteries
Authors: Wei Chuanliang , Fei Huifang , Tian Yuan , An Yongling , Zeng Guifang , Feng Jinkui , Qian Yitai
Published: October 2019

Exploring flexible lithium‐ion batteries is required with the ever‐increasing demand for wearable and portable electronic devices. Selecting a flexible conductive substrate accompanying with closely coupled active materials is the key point. Here, a lightweight, flexible, and freestanding MXene/liquid metal paper is fabricated by confining 3 °C GaInSnZn liquid metal in the matrix of MXene paper without any binder or conductive additive. When used as anode for lithium‐ion cells, it can deliver a high discharge capacity of 638.79 mAh g−1 at 20 mA g−1. It also exhibits satisfactory rate capacities, with discharge capacities of 507.42, 483.33, 480.22, 452.30, and 404.47 mAh g−1 at 50, 100, 200, 500, and 1000 mA g−1, respectively. The cycling performance is obviously improved by slightly reducing the charge–discharge voltage range. The composite paper also has better electrochemical performance than liquid metal coated Cu foil. This study proposes a novel flexible anode by a clever combination of MXene paper and low‐melting point liquid metal, paving the way for next‐generation lithium‐ion batteries.
Recent Progress and Development in Inorganic Halide Perovskite Quantum Dots for Photoelectrochemical Applications
Authors: Liang Junhui , Chen Da , Yao Xin , Zhang Kaixiang , Qu Fengli , Qin Laishun , Huang Yuexiang , Li Jinghong
Published: October 2019

Inorganic halide perovskite quantum dots (IHPQDs) have recently emerged as a new class of optoelectronic nanomaterials that can outperform the existing hybrid organometallic halide perovskite (OHP), II–VI and III–V groups semiconductor nanocrystals, mainly due to their relatively high stability, excellent photophysical properties, and promising applications in wide‐ranging and diverse fields. In particular, IHPQDs have attracted much recent attention in the field of photoelectrochemistry, with the potential to harness their superb optical and charge transport properties as well as spectacular characteristics of quantum confinement effect for opening up new opportunities in next‐generation photoelectrochemical (PEC) systems. Over the past few years, numerous efforts have been made to design and prepare IHPQD‐based materials for a wide range of applications in photoelectrochemistry, ranging from photocatalytic degradation, photocatalytic CO2 reduction and PEC sensing, to photovoltaic devices. In this review, the recent advances in the development of IHPQD‐based materials are summarized from the standpoint of photoelectrochemistry. The prospects and further developments of IHPQDs in this exciting field are also discussed.
Single‐Cell Biodetection by Upconverting Microspinners
Authors: Ortiz‐Rivero Elisa , Prorok Katarzyna , Skowickł Michal , Lu Dasheng , Bednarkiewicz Artur , Jaque Daniel , Haro‐González Patricia
Published: October 2019

Near‐infrared‐light‐mediated optical tweezing of individual upconverting particles has enabled all‐optical single‐cell studies, such as intracellular thermal sensing and minimally invasive cytoplasm investigations. Furthermore, the intrinsic optical birefringence of upconverting particles renders them light‐driven luminescent spinners with a yet unexplored potential in biomedicine. In this work, the use of upconverting spinners is showcased for the accurate and specific detection of single‐cell and single‐bacteria attachment events, through real‐time monitoring of the spinners rotation velocity of the spinner. The physical mechanisms linking single‐attachment to the angular deceleration of upconverting spinners are discussed in detail. Concomitantly, the upconversion emission generated by the spinner is harnessed for simultaneous thermal sensing and thermal control during the attachment event. Results here included demonstrate the potential of upconverting particles for the development of fast, high‐sensitivity, and cost‐effective systems for single‐cell biodetection.
Barcoding Amino Acids for Mutation Screening in Amyloid Beta Peptides
Authors: Hoang Phuong , Khashab Niveen M.
Published: October 2019

Amino acid (AA) substitutions are directly correlated with specific pathologies such as Alzheimer's disease, making their rapid screening and detection critical to treatment and scientific study. A proof‐of‐concept implementation of the label‐free and noninvasive Raman spectroscopy technique for the detection of AA substitutions in primary peptide fragments is demonstrated. By encoding the Raman “fingerprint” of individual AAs into binary formats called optical identification tags (OITs), a library of identifiers is created, which can then be used for detecting mutations. When the recorded Raman signal is enhanced by using surface‐enhanced Raman scattering substrate, the mutation screening strategy can detect a single point missense mutation in an 11‐AA peptide fragment of amyloid beta Aβ(25–35) and a frameshift mutation in a 42‐AA fragment Aβ(1–42) down to picomolar concentrations. The combination of high sensitivity and simple operation makes the use of OITs a promising approach for high‐throughput automated screening.
Atomic Layer Deposition of Functional Layers in Planar Perovskite Solar Cells
Authors: Brinkmann Kai Oliver , Gahlmann Tobias , Riedl Thomas
Published: October 2019

Within less than a decade of development, perovskite solar cells (PSCs) have reached efficiency levels that trigger the question about commercialization of the technology. However, the steadily increasing efficiency of PSCs is still accompanied by concerns of long‐term stability and open questions about upscaled manufacturing. Atomic layer deposition (ALD) is a technique that can provide unique contributions to both issues. On top of that, ALD is an enabling technology to unlock novel options regarding device architecture and processing that are not achievable by other coating techniques. As such, ALD has enjoyed some notable recent interest from the community of perovskite photovoltaics. Herein, the current state of the art in ALD‐grown functional charge transport layers for PSCs is highlighted. The most urgent scientific issues that have to be tackled are emphasized and opportunities for further research are outlined.
Mechanisms and functional impact of Group I metabotropic glutamate receptor modulation of excitability in mouse MNTB neurons
Authors: dos Santos e Alhadas Éverton , Correa Ana Maria Bernal , Naves Ligia Araújo , Kushmerick Christopher
Published: October 2019

We examined effects of Group I metabotropic glutamate receptors on the excitability of mouse medial nucleus of the trapezoid body (MNTB) neurons. The selective agonist, S‐3,5‐dihydroxyphenylglycine (DHPG), evoked a dose‐dependent depolarization of the resting potential, increased membrane resistance, increased sag depolarization, and promoted rebound action potential firing. Under voltage‐clamp, DHPG evoked an inward current, referred to as IDHPG, which was developmentally stable through postnatal day P56. IDHPG had low temperature dependence in the range 25–34°C, consistent with a channel mechanism. However, the I‐V relationship took the form of an inverted U that did not reverse at the calculated Nernst potential for K+ or Cl−. Thus, it is likely that more than one ion type contributes to IDHPG and the mix may be voltage dependent. IDHPG was resistant to the Na+ channel blockers tetrodotoxin and amiloride, and to inhibitors of iGluR (CNQX and MK801). IDHPG was inhibited 21% by Ba2+ (500 μM), 60% by ZD7288 (100 μM) and 73% when the two antagonists were applied together, suggesting that KIR channels and HCN channels contribute to the current. Voltage clamp measurements of IH indicated a small (6%) increase in Gmax by DHPG with no change in the voltage dependence. DHPG reduced action potential rheobase and reduced the number of post‐synaptic AP failures during high frequency stimulation of the calyx of Held. Thus, activation of post‐synaptic Group I mGlu receptors modifies the excitability of MNTB neurons and contributes to the reliability of high frequency firing in this auditory relay nucleus.
Maps on positive cones in operator algebras preserving power means
Authors: Molnár Lajos
Published: October 2019

In this paper we consider power means of positive Hilbert space operators both in the conventional and in the Kubo–Ando senses. We describe the corresponding isomorphisms (bijective transformations respecting those means as binary operations) on positive definite cones and on positive semidefinite cones in operator algebras. We also investigate the question when those two sorts of power means can be transformed into each other.
Factor analysis to investigate genotype and genotype × environment interaction effects on pro-vitamin A content and yield in maize synthetics
Authors: Mengesha Wende , Menkir Abebe , Meseka Silvestro , Bossey Bunmi , Afolabi Agbona , Burgueno Juan , Crossa Jose
Published: October 2019

Vitamin A Deficiency (VAD) is a major public health problem in Sub-Saharan Africa affecting 33 million preschool-age children. Enrichment of maize varieties with provitamin A could provide sustainable and affordable solution to VAD. This study was conducted to understand the extent of GEI effects on both grain yield and provitamin A content in 21 maize synthetics and identify synthetics combining stable performance with high level provitamin A content across diverse environments in West Africa. Combined analysis of variance found significant (p < 0.01) GEI effects that prompted further investigation of the GEI magnitude using mixed model with factor analysis. Factors 1 and 2 explained 71% of the total variability. G5, G4, G12, G18, G2 and G14 were broadly adapted to a range of environments and considered the most stable and high yielding. G8, G1, and G10 were specifically adapted to a group of environments. Whereas, G21, G19 and G17 were found to be the worst and unstable genotypes. G4 combined stable performance with high provitamin A content, whereas G20 and G18 were stable but had low provitamin A contents. Three genotypes, G4, G12 and G14 were found to combine stability with high provitamin A contents. These genotypes can be recommended for production in the low-land tropics of West and Central Africa with similar environments.
Certain algebraic structures associated with a double fuzzy topological space
Authors: Vivek S. , Mathew Sunil C.
Published: October 2019

The algebraic structures of the families of fuzzy sets that arise out of various notions of openness and closedness in a double fuzzy topological space are investigated. The collection of these families forms a bounded, associative lattice. The zero divisors and zero-divisor graph of this lattice are also identified.
Plasmalogen deficiency and neuropathology in Alzheimer's disease: Causation or coincidence?
Authors: Senanayake Vijitha , Goodenowe Dayan B.
Published: October 2019

Causation of Alzheimer's disease (AD) is not well understood. It is necessary to look beyond neuropathology to identify the underlying causes of AD and many other common neurological diseases. Lipid abnormalities are well documented in the preclinical phases of many neurological diseases including AD. Here, we use AD as an example to examine the role of lipid abnormalities as an underlying cause of neurodegeneration. Role of lipids, particularly phospholipids, in the optimal function of the nervous system, impact of the aberrations of phospholipid metabolism on β‐amyloid deposition and cholinergic neuronal function, epidemiological evidence on the association of phospholipids with AD, and preliminary data on the possible modulation of risk factors of AD by phospholipids are examined. Implications of these findings on diagnosis and prevention are also discussed.
Light automation for aircraft fuselage assembly
Authors: Trabasso L. G. , Mosqueira G. L.
Published: October 2019

The ever-growing need to improve manufacturing processes has led recently to an increase in the number of automation solutions used to assemble aircraft structural elements. A process of interest to this industry is the alignment of fuselage sections, which is currently done either manually or by complex, expensive automated systems. The manual method introduces a significant production delay and most automated systems have limited flexibility. This article presents an integration solution implemented in an alternative low-cost, high-flexibility alignment robotic cell. The performance of an optical coordinate measuring machine (CMM) as feedback source for the adaptive control of a conventional industrial manipulator is assessed. Laser interferometry readings are used as reference. The contribution of the work lies in the execution of experiments based on the EN ISO 9283 standard (Manipulating industrial robots - performance criteria and related test methods) to determine the adequacy of the commercial off-the-shelf system to the tolerances and requirements of the fuselage alignment process at hand. The optimal configuration of the integrated system attained the nominal alignment position with an average accuracy of 0.16mm and

$0.004^\circ$

, partially meeting the required tolerances, and the obtained values are nearly 16x better compared to a baseline, open-loop manipulator. These results serve as reference for the aerospace industry in the development of the next generation of tools and automated assembly processes.
Triple-sequential defibrillation for refractory ventricular fibrillation in a 24-year-old male out of hospital cardiac arrest
Authors: Bignucolo Adam , Parent Adam , Dube Mark , Kusnierczyk John , Ansell Dominique , Ohle Robert
Published: October 2019

Refractory ventricular fibrillation encountered during cardiac arrest has a mortality rate of 97%.1 As per the advanced cardiac life support (ACLS) guidelines, the management algorithm of ventricular fibrillation consists of chest compressions, epinephrine, defibrillation, and anti-arrhythmics.2 There have been reports describing the use of the fast-acting selective β-blocker, esmolol, and dual-sequential defibrillation in the management of ventricular fibrillation that is refractory to standard ACLS. We present a case of a 24-year-old male who had an out-of-hospital cardiac arrest, with refractory ventricular fibrillation despite high-quality cardiopulmonary resuscitation (CPR) and ACLS management. Along with standard ACLS, triple-sequential defibrillation was used to achieve return of spontaneous circulation (ROSC) after 82 minutes of downtime. An electrocardiogram (ECG) after ROSC showed an ST-elevation myocardial infarction (MI), and the patient underwent angiography showing a 100% occlusion of his left anterior descending artery. Following management of his coronary artery disease, he was discharged from the hospital 16 days later and was neurologically intact.
Supporting researchers through full-service hotline and consultation services: Success in simplicity, customization, and staffing
Authors: Brouwer Rebecca Namenek , Miller Emily , Patil Sunita , Swamy Geeta K. , Moen Rebbecca , McMillan Amanda , Boulware L. Ebony
Published: October 2019

Navigating the research domain at an academic medical center can be challenging, even for seasoned investigators. To address this, Duke University launched two initiatives: (1) a research navigation “hotline” to provide brief assistance with a variety of research questions; and (2) researcher onboarding and consultation, a one-to-one tailored offering to ensure that researchers are equipped to navigate research resources and processes effectively. The services are provided by the myRESEARCHnavigators (MRN) team, funded by Duke’s CTSA. The diverse scientific backgrounds of the six team members align well with those of the research community, allowing for a good match between the researcher and MRN team member. The MRN team answers approximately 30 questions per month, and has provided consultations to almost 400 researchers. Both services receive high satisfaction ratings (4 or 5 stars [out of 5 stars] given to 90% of hotline answers, and 99% of researcher onboarding/consultation sessions). As of July 2019, the School of Medicine has determined that the consultations are critical to their mission and have made them a requirement for new research faculty. The team will continue marketing both services to encourage adoption.
Implication of Burn Disaster Planning and Management: Coverage and Accessibility of Burn Centers in Belgium
Authors: Al-Shamsi Mustafa , Jennes Serge
Published: October 2019

Introduction:

Burn disasters represent a real challenge to burn centers worldwide. Several burn disasters with a considerable number of casualties happened in Belgium in the past. The positioning of burn centers is a significant issue to account for in a burn disaster preparedness and response. The objectives of this study are to identify the geographic coverage and accessibility of the burn centers in Belgium in the realm of a burn disaster scenario.

Method:

Cross-sectional secondary analysis was performed using data from the Belgian Burn Association and Belgian Department of the Statistic. Data were analyzed using ArcGIS, a geographic information system tool to identify the coverage of burn centers within half an hour driving time, and access time of both populations in the districts and the disaster-prone areas to the individual burn centers.

Results:

Around 7.3 million (65%) people are covered by a half an hour driving time window from the burn centers. However, the accessibility to the individual burn centers is varied across different regions and provinces.

Conclusion:

There is a slightly over-supply of burn centers in the mid part of the country, contrasted by an under-supply and poor accessibility for the population living near the borders, particularly in the south part of the country. This study would provide a benchmark for stakeholders in Belgium and other industrial countries to consider the coverage and accessibility of the burn centers as part of preparation and planning for burn disasters in the future.
Iterative value models generation in the engineering design process
Authors: Bertoni Marco , Bertoni Alessandro
Published: October 2019

Value models are increasingly discussed today as a means to frontload conceptual design activities in engineering design, with the final goal of reducing cost and rework associated with sub-optimal decisions made from a system perspective. However, there is no shared agreement in the research community about what a value model exactly is, how many types of value models are there, their input–output relationships and their usage along the engineering design process timeline. Emerging from five case studies conducted in the aerospace and in the construction equipment industry, this paper describes how to tailor the development of value models in the engineering design process. The initial descriptive study findings are summarized in the form of seven lessons learned that shall be taken into account when designing value models for design decision support. From these lessons, the paper proposes a six-step framework that considers the need to update the nature and definition of value models as far as new information becomes available, moving from initial estimations based on expert judgment to detailed quantitative analysis.
FIRST STEPS IN THE ARCHAEOLOGY OF ASSYRIA: BOTTA'S LETTERS AND THE “EXCAVATION HOUSE” AT KHORSABAD
Authors: Genç B.
Published: October 2019

Paolo Emilio Botta, who was sent to Mosul as the French Consul in 1842, explored at Kuyunjik and Nebi Yunus and then began investigating ancient stone foundations at Nebi Yunus. Muhammed/Mehmed Pasha and local religious leaders, who were worried that the tomb of prophet Yunus (Jonah) and a local mosque would be destroyed by the excavations, opposed these investigations and the work stopped as a result. After Nebi Yunus, Botta started to work at Kuyunjik in December 1842. While his workers were busy at Kuyunjik, someone from the village of Khorsabad talked about stones with inscriptions and reliefs on them on top of a hill. After three months of exhaustive work at Kuyunjik, on March 20th, 1843 Botta sent a group of workers to Khorsabad for excavation. However, problems arose about Botta's work in Mosul. The Pasha of the province in particular created obstructions. We have done research in the Ottoman Archives of the Prime Ministry of Turkey on Botta's excavation permits and documents, the obstructions created by the Pasha of Mosul, the details of the story of Botta's experiences at Khorsabad and the relevant correspondence. In these archives we have found documents about the problems Botta experienced at Khorsabad, the conditions for excavation permits and the construction of an excavation house, the plan of the excavation house mentioned by Botta, which was drafted like a fortress next to the village houses and sent to Istanbul, as well as petitions of the villagers opposing Botta's work and his excavation house. Here, we attempt to re-read Botta's excavation seasons, permits and the problems he encountered through the documents in the Ottoman Archives in order to understand how this period is to be understood. Through these documents and correspondence, we were able to study the problems that arose between the Ottoman State and France as a result of Botta's excavations at Khorsabad.
Crevasse initiation and history within the McMurdo Shear Zone, Antarctica
Authors: Kaluzienski Lynn , Koons Peter , Enderlin Ellyn , Hamilton Gordon , Courville Zoe , Arcone Steven
Published: October 2019

While large-scale observations of intensified fracture and rifting can be observed through remote-sensing observations, understanding crevasse initiation may best be achieved with small-scale observations in which crevasses can be directly observed. Here we investigate the kinematic drivers of crevasse initiation in the McMurdo Shear Zone (MSZ), Antarctica. We delineated 420 crevasses from ~95 km of 400 MHz frequency ground-penetrating radar data and compared these data with kinematic outputs derived from remotely-sensed ice surface velocities to develop a statistical method to estimate crevasse initiation threshold strain rate values. We found the MSZ to be dominated by simple shear and that surface shear strain rates proved best for predicting crevasse features, with regions of higher shear strain rate more likely to have a greater number of crevasses. In the surveyed portion of our study region, values of shear strain rate and vorticity rate derived from the MEaSUREs2 velocity dataset range between 0.005–0.020 and 0.006–0.022 a−1, respectively, with crevasses located at ≥0.011 and ≥0.013 a−1. While threshold values from this study cannot be directly applied to other glacial environments, the method described here should allow for the study of shear margin evolution and assessment of localized damage and weakening processes in other locations where in situ data are available.
Parent and Child Factors Predicting Early Intervention Choices of Australian Parents of Children With Autism Spectrum Disorder
Authors: Carlon Sarah , Carter Mark , Stephenson Jennifer , Sweller Naomi
Published: October 2019

Extant research addressing implicit factors related to intervention decisions made by parents of children with autism spectrum disorder (ASD) is limited and findings have been inconsistent. In the present study, 74 parents of preschoolers with ASD were surveyed regarding intervention use. The possible relationships between implicit parent factors (education level, age, causal beliefs about ASD, complementary and alternative medicine [CAM] use, and family income) and child factors (time since diagnosis, and perceived severity of ASD), and the number and type of interventions used were examined. Consistent with previous research, only a small number of significant relationships were found, including that family income, parent use of CAM, mother’s education, parent belief in an unknown aetiology of ASD, and time since child’s diagnosis were all related to the number of interventions used. Some specific findings of previous research were not replicated in the present study (e.g., neither beliefs in environmental aetiology of ASD nor parent education levels were related to the use of specific CAM interventions), indicating that factors affecting decision-making may not be consistent across samples. Nevertheless, future research including an expanded range of possible implicit factors with more diverse samples may provide a more accurate predictive model of parent decision-making.
DNA methylation and one-carbon metabolism related nutrients and polymorphisms: analysis after mandatory flour fortification with folic acid
Authors: Steluti Josiane , Palchetti Cecília Zanin , Miranda Andreia Machado , Fisberg Regina Mara , Marchioni Dirce Maria
Published: October 2019

There is a growing research interest in determining whether changes in the global status of DNA methylation are related to the environment, in particular, to one-carbon metabolism. So, our aim was to investigate the effect of dietary methyl-group donor intake (methionine, folate, choline, betaine, vitamins B2, B6 and B12), biomarkers (total folate, unmetabolised folic acid (FA), 5-methyltetrahydrofolate, homocysteine, vitamins B6 and B12 concentrations) and genetic variants (polymorphisms involved in one-carbon metabolism) on global DNA methylation in a population exposed to mandatory flour fortification with FA. A cross-sectional study of health and living conditions was conducted among a representative sample of residents in São Paulo, Brazil. The mean of global DNA methylation was lower in young people than in adults and the elderly (P = 0·049). No differences between genotypes of polymorphism and global DNA methylation mean were identified. We observed that the increase in betaine intake led to an absolute change in percentage of DNA methylation (β = 0·0005, P = 0·024) using multiple regression. Betaine intake alone was associated with an absolute change in percentage of global DNA methylation. The study did not find an association between global DNA methylation and folate status even in a population exposed to mandatory flour fortification with FA.
Investment Shocks and Asset Prices: An Investment-Based Approach
Authors: Garlappi Lorenzo , Song Zhongzhi
Published: October 2019

We propose a new approach, based on investment data, to determine firms’ return exposure to investment-specific technology (IST) shocks. When applied to U.S. data, we find that, in contrast to the pattern estimated from empirical IST proxies, value firms have higher exposure to IST shocks than growth firms. When applied to simulated data from existing theoretical models, our approach reveals that existing empirical findings may result from measurement errors in the IST proxies. Importantly, our simulation analysis uncovers the key role played by investment data in determining the economic mechanism through which IST shocks affect cross-sectional asset prices.
A socio-economic study of Fasciola infections in cattle and sheep at the Etoudi slaughterhouse, Yaoundé, Cameroon
Authors: Takang E.E. , LeBreton M. , Ayuk C.E. , MacLeod E.T.
Published: October 2019

A cross-sectional socio-economic study of fascioliasis in livestock was carried out at the Livestock Development Cooperation (SODEPA) slaughterhouse in Etoudi, Yaoundé during the periods covering the beginning and late dry season in the northern and eastern regions of Cameroon. A total of 768 cattle and 267 sheep were inspected for the presence of Fasciola species. The overall infection rate in cattle and sheep was 18% (n = 767) and 27% (n = 267), respectively. For the animals that were Fasciola positive, a total of 267.86 kg of liver in cattle was condemned, resulting in a loss of US$1124, while a total of 57 kg of liver was condemned from the sheep population, amounting to a loss of US$114. A total of US$76,097 was determined as losses incurred from condemnation of liver for both cattle and sheep per annum based on the total number slaughtered each year. The findings indicate that fascioliasis is present in cattle and sheep slaughtered in Cameroon and that it causes great economic losses due to condemnation of liver. The local climatic conditions, husbandry systems and the presence of snails (intermediate hosts) are probably the main factors influencing the incidence of the disease and may account for the epidemiological significance found in this study.