bluuebunny/crossref_metadata_2025_split huggingface dataset:
A compact gate driver with bifunctional capacitor for in‐cell touch mobile display
Authors: Shen Shuai , Liao Congwei , Yang Jiwen , Jiao Hailong , Zhang Shengdong 
Published: March 2021

AbstractA thin‐film transistors (TFTs) integrated gate driver circuit with bifunctional capacitors for in‐cell touch with horizontal blanking display mode is proposed in this paper. The coupling capacitor, which conventionally enables low‐level‐maintaining parts in display periods, is reused to store transfer charges during touch detection periods. Consequently, only nine TFTs and two capacitors are used for a single stage of the proposed gate driver for in‐cell touch display. Furthermore, the bifunctional capacitor scheme not only avoids the driving TFT from long‐time voltage stress but also suppresses the transfer charges leakage effectively. Therefore, the variation ratios of rising/falling time between adjacent gate driver stages are suppressed within 6%. For a 5.7‐in. display with HD+ resolution, the layout of a single gate driver stage is 623 μm (width) × 171 μm (height). The proposed gate driver circuit has been prepared with the state‐of‐the‐art hydrogenated amorphous silicon (a‐Si:H) TFT manufacturing process. The measured results verified the circuit functions. The gate driver output waveforms are well maintained and being almost independent of touch detection time interval from 100 to 300 μs.
A new method to estimate planktonic oxygen metabolism using high‐frequency sensor measurements in mesocosm experiments and considering daytime and nighttime respirations
Authors: Soulié Tanguy , Mas Sébastien , Parin David , Vidussi Francesca , Mostajir Behzad 
Published: March 2021

AbstractUnderstanding how aquatic ecosystems respond to perturbations has emerged as a crucial way to predict the future of these ecosystems and to assess their capacity to produce oxygen and store atmospheric carbon. In this context, in situ mesocosm experiments are a useful approach for simulating disturbances and observing changes in planktonic communities over time and under controlled conditions. Within mesocosm experiments, the estimation of fundamental parameters such as gross primary production (GPP), net community production (NCP), and respiration (R) allows the evaluation of planktonic metabolic responses to a perturbation. The continuous estimation of these metabolic parameters in real time and at high frequency is made possible by employing noninvasive automated sensors in the water column. However, some uncertainties and methodological questions about the estimation of daytime respiration remain to be addressed for this method, and notably to address the fact that respiration could be significantly higher during the day than during the night. In this study, data from two in situ mesocosm experiments performed in fall and spring in a coastal Mediterranean area were used to develop a new method of estimating daytime respiration, and in turn daily GPP, R, and NCP, by considering the maximum instantaneous R, and that takes into account the variability of the coupling between day–night and dissolved oxygen cycles. This new method was compared with the Winkler incubation technique and with another existing method. Results showed that using this existing method, daytime R was significantly underestimated relative to estimates obtained with the newly proposed method.
Optimal recording electrode placement for radial motor nerve conduction study using extensor indicis muscle: Cadaver and electrophysiological studies
Authors: Kwon You Ha , An Hyonggin , Kim Dong Hwee 
Published: March 2021

AbstractIntroduction/AimsThe aim of this study was to determine the optimal combination of active (E1) and reference (E2) recording electrode placements for the radial motor nerve conduction study recording over the extensor indicis muscle using surface electrodes.MethodsThirty‐six upper limbs from 18 fresh frozen cadavers were dissected to determine the midpoint of the extensor indicis muscle. Radial nerve conduction study was performed in 112 arms of 56 healthy subjects. Six combinations of three E1 and two E2 sites were studied. The stimulation site was 8 cm proximal to the E1 electrode.ResultsThe optimal combination of placement sites for the E1 and E2 electrodes to provide the largest amplitude is E1 electrode at the distal 1/4 point of the forearm length and E2 electrode at the extensor indicis tendon point in the wrist.DiscussionOptimal recording electrode placement may increase the accuracy and reproducibility of radial motor nerve conduction studies.
Cerium doped ZIF nanoparticles and hydroxyapatite co‐deposited coating on titanium dioxide nanotubes array exhibiting biocompatibility and antibacterial property
Authors: Zhang Ziqi , Zhang Yan , Liu Yingqi , Zhang Siqi , Yao Kaida , Sun Yueqiu , Liu Yang , Wang Xiangzhi , Huang Weimin , Lu Jun 
Published: March 2021

AbstractCerium has been used as an implanted alloy additive for many years for it can enhance the mechanical properties of the alloy and restrain the corrosion of the implant. Moreover, cerium oxide nanoparticles are often used as an antibacterial material. However, there were few researches focusing on the antibacterial properties of Ce3+ and Ce4+ ions, instead of their corresponding oxide, as potential antibacterial coatings. Thus in this work, we loaded Ce ions into the porous structure of the ZIF‐8 nanoparticles and co‐deposited them with hydroxyapatite as a composite coating onto anodized titanium dioxide nanotubes array in order to test whether it can improve the anti‐corrosion and antibacterial properties of the materials without affecting the biocompatibility.
Accelerating block coordinate descent for nonnegative tensor factorization
Authors: Man Shun Ang Andersen , Cohen Jeremy E. , Gillis Nicolas , Thi Khanh Hien Le 
Published: March 2021

AbstractThis paper is concerned with improving the empirical convergence speed of block‐coordinate descent algorithms for approximate nonnegative tensor factorization (NTF). We propose an extrapolation strategy in‐between block updates, referred to as heuristic extrapolation with restarts (HER). HER significantly accelerates the empirical convergence speed of most existing block‐coordinate algorithms for NTF, in particular for challenging computational scenarios, while requiring a negligible additional computational budget.
The microbiome(s) and cancer: know thy neighbor(s)
Authors: González‐Sánchez Paloma , DeNicola Gina M 
Published: March 2021

AbstractThe human microbiome is essential for the correct functioning of many host physiological processes, including metabolic regulation and immune responses. Increasing evidence indicates that the microbiome may also influence cancer development, progression, and the response to therapy. Although most studies have focused on the effect of the gut microbiome, many other organs such as the skin, vagina, and lungs harbor their own microbiomes that are different from the gut. Tumor development has been associated with dysbiosis not only in the gut but also in the tissue from which the tumor originated. Furthermore, the intratumoral microbiota has a distinct signature in each tumor type. Here, we review the mechanisms by which the organ‐specific microbiome can contribute to carcinogenesis: release of toxins that cause DNA damage and barrier failure; alteration of immune responses to create a local inflammatory or immunosuppressive environment; and regulation of nutrient levels in the tumor microenvironment through metabolite production and consumption. Solving the puzzle of how the microbiome influences the carcinogenesis process and treatment response requires an understanding of the two ways the microbiome can interact with cancer cells and the tumor microenvironment: through systemic effects exerted by the gut microbiota and local effects of the intratumoral microbiota. © 2021 The Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
Influence of Ga back grading on voltage loss in low‐temperature co‐evaporated Cu(In,Ga)Se2 thin film solar cells
Authors: Yang Shih‐Chi , Ochoa Mario , Hertwig Ramis , Aribia Abdessalem , Tiwari Ayodhya N. , Carron Romain 
Published: March 2021

AbstractThe performance of Cu(In,Ga)Se2(CIGS) solar cells is limited by the presence of the highly recombinative CIGS/Mo interface. The recombination at the CIGS/Mo interface is influential for the open circuit voltage (VOC) in high quality CIGS absorbers with increased charge carriers diffusion length. A quantitative understanding of the role of the Ga back grading height (ΔGGI) in suppressing back interface recombination is needed. In this work, we take advantage of a low temperature process to modify theΔGGI while keeping the composition in the notch and front regions almost unchanged. Improvement in bothVOCdeficit and time‐resolved photoluminescence lifetime are observed with increasingΔGGI. With a combination of back surface modification experiments and numerical simulations, we quantify a voltage loss in ungraded devices of approximately 100 mV solely from the back interface recombination. Nice agreement between simulation and experimental data is reached while constraining the values of possible diffusion lengths. Our results suggest that aΔGGI of about 0.50 is required to effectively suppress the back interface recombination, highlighting the importance of grading control in high‐performance CIGS solar cells and devices.
A computational perspective of novel N‐heterocyclic silylenes using density functional theory
Authors: Hassanpour Akbar , Poor Heravi Mohammad Reza , Kheirollahi Nezhad Parvaneh Delir , Hosseinian Akram , Ahmadi Sheida 
Published: March 2021

AbstractIn this theoretical survey, we inspect substituent effects of two fused benzene, pyrrole, phosphole, furan, and thiophene rings on the stability, polarity, charge distribution, nucleophilicity, electrophilicity, and aromaticity of singlet (s) and triplet (t) silylenes, at density functional theory (DFT). Singlet silylenes as ground state exhibit more stability than their corresponding triplet congeners. In contrast to previous reports on Hammick carbenes, here higher thermodynamic stability (singlet‐triplet energy difference or ΔEs‐t = Et − Es) is considered for silylene situated between two sulfur heteroatoms of two substituted thiophene rings, in a “chair” arrangement in the direction of the silylenic center. Regardless of how arranged, the order of stabilizing effect for fused rings is thiophene > furan > pyrrole > phosphole > benzene. The substituted Hammick silylenes with two fused heterocyclic rings show more stability than synthesized silylenes by Denk and Kira. Also, higher kinetic stability (the frontier molecular orbitals energy difference or ΔEHOMO‐LUMO) is revealed by silylene situated between two oxygen heteroatoms of two substituted furan rings, in a “W” arrangement to the divalent center. The scrutinized singlet structures display wider band gap than their triplet states. Every triplet silylene shows higher nucleophilicity (about 1/5 times) than its corresponding singlet state. Commonly, six‐membered aromatic N‐heterocyclic silylenes (NHSis) show higher N and lower ω than that of five‐membered aromatic NHSis. The highest N and the least ω character is anticipated for the substituted pyrrole NHSis in either “W” arrangement or “chair” orientation toward the silylenic center, among the fused species.
Staying for the benefits: Location‐specific insider advantages for geographically immobile students in higher education
Authors: Mærsk Eva , Sørensen Jens F.L. , Thuesen Annette A. , Haartsen Tialda 
Published: March 2021

AbstractIn the youth mobility research, young people's geographical immobility is often associated with negative connotations. This paper challenges this discourse by analysing the location‐specific insider advantages (LSIAs) of geographically immobile young adults in higher education institutions (HEI). We use data from a survey of students in two locations in Denmark: the peripheral city of Esbjerg and the metropolis of Copenhagen. We categorise students with diverse geographical mobility backgrounds into four (im)mobility types: ‘local stayers’, ‘regional commuters’, ‘regional in‐movers’, and ‘distant in‐movers’. The paper explores LSIAs across (im)mobility type and location type. We find that immobile students are more likely to have a connection to, and experience with, the local labour market, to be satisfied with their social life, and to live with their parents compared with their geographically mobile peers. However, the advantages differ in type and amount between the peripheral and the urban case locations. We conclude that immobility should be (re)framed as an advantageous strategy for some young adults in early higher education.
Removal of fluoride and arsenic from groundwater by hybrid Al–Fe electrocoagulation: Adsorption isotherm and kinetics study of single and binary component systems
Authors: Nyangi Magori J. , Chebude Yonas , Kilulya Kessy F. , Minu Andrew 
Published: March 2021

AbstractThis study reports on the adsorption isotherm and kinetics of arsenic and/or fluoride by the hybrid iron–aluminum electrocoagulation in a batch reactor. The experiments were performed at a condition of current densityJ = 9.9 mAcm−2; time = 50 min; and pH = 7.5, at variable initial concentrations. The flocs surfaces were characterized using Fourier transform infrared spectroscopy and X‐ray powder diffraction that revealed presence of AlAsO4·2(H2O), AlF2OH, and FeOOAs. Adsorption of fluoride and arsenic in both systems followed Freundlich and Langmuir models. The adsorption processes for fluoride and arsenic were spontaneous and physical in nature with monolayer maximum adsorption capacities of 76.4 and 1.14 mg/g, respectively in single systems. In a binary component system, the adsorption capacity of arsenic was 0.06 mg/g while that of fluoride became 75.6 mg/g as evaluated using extended Langmuir and extended Freundlich models. Moreover, the kinetics of fluoride and/or arsenic adsorption followed the pseudo second‐order model. The remediation of fluoride and arsenic from water by Al–Fe oxyhydroxide were found to be through ionic exchange and electrostatic attraction, respectively.
Economic model predictive control of nonlinear systems using a linear parameter varying approach
Authors: Karimi‐Pour Fatemeh , Puig Vicenç , Ocampo‐Martinez Carlos 
Published: March 2021

AbstractThis article proposes an economic model predictive control (EMPC) approach for linear parameter varying (LPV) systems. An efficient implementation of the associated MPC optimization problem is introduced based on transforming the LPV model into a linear time‐varying one by using an estimation of the scheduling variables along the prediction horizon. This estimation is based on the optimal states/inputs determined from the solution of the previous optimization problem while running the receding horizon strategy. Using this approach, the solution of the proposed LPV‐based EMPC scheme would be possible by solving a series of quadratic programming problems at each time instant. This approach allows reducing the computational burden compared with the solution of a nonlinear optimization problem that would result naturally from the LPV‐based formulation. The stability of the proposed approach is guaranteed by forcing the terminal state to converge towards the optimal equilibrium/working point of the system. Moreover, the terminal constraint is relaxed by using a constraint set around the terminal state instead of a constraint value and adding a penalty on the terminal state into the cost function. Besides, strict dissipativity is established as a sufficient condition to prove stability. Finally, the effectiveness of the LPV‐based EMPC strategy is shown by controlling a small‐scale pasteurization system in simulation. The comparison between the proposed control approach and standard MPC approaches is performed. Results show the advantages of the proposed LPV‐based EMPC controller in terms of economic cost minimization.
Adaptive decentralized finite‐time tracking control for uncertain interconnected nonlinear systems with input quantization
Authors: Sun Haibin , Hou Linlin 
Published: March 2021

AbstractCompared with the previous references, very few results are available to study control scheme directly for interconnected nonlinear systems (INSs) with strongly interconnected terms described by unknown state‐dependent‐nonlinear functions and input quantization in the finite‐time control literature. In this article, an adaptive decentralized finite‐time tracking control (ADFTTC) algorithm is developed to address the system output tracking problem for a class of INSs with input quantization and strongly interconnected terms. To reduce the computation complexity, the neural network technique is employed to reconstruct the derivative of virtual control laws in each step. By employing adding a power integrator technique, an adaptive decentralized finite‐time tracking controller is constructed, which guarantees all signals in the closed‐loop systems converge to a neighborhood of the origin. Moreover, the developed controller avoids the “singularity” and “explosion of complexity” problems in the recursive design scheme. An example of an inverted pendulum confirms the ADFTTC scheme.
Runoff responses to climate change in China's Buyuan River Basin
Authors: Yuan Xu , Lu Ying , Jiang Li , Liang Siqi , Jiang Yongjian , Xiao Fujin 
Published: March 2021

AbstractClimate change has affected the dynamics of the water cycle and its consequent effects on water resources in many regions. The Buyuan River, the largest tributary of the Upper Mekong River, is one of the regions with the strongest climate change in the Mekong River Basin, and its cross‐border impact on water resources has received increasing attention. However, few studies have focused on the runoff responses to future climate change in the Buyuan River Basin (BRB). In this study, the MIKE SHE model was applied to estimate the runoff of the BRB, based on climate‐change scenarios from the Beijing Climate Center Climate System Model (BCC‐CSM1‐1) under two Representative Concentration Pathways (RCPs). The simulations predicted a slight decrease in the mean annual runoff of the BRB under the RCP4.5 and RCP8.5 scenarios (2020–2049) compared with the reference period (1959–2012), with an increase in the magnitude of inter‐annual variation, leading to increased deficit and surplus during dry and wet years. The simulations predicted the earlier maximum monthly runoff and a more evenly distributed annual distribution of the runoff under RCP4.5 and RCP8.5 scenarios as compared to the reference period. The arrival of the flood season in the BRB was advanced by a month under future climate‐change scenarios. The results showed that the average annual runoff of the BRB does not change significantly under future climate‐change scenarios. However, there are obvious changes in the inter‐annual and intra‐annual distribution of the runoff.
Seismic performance of precast posttensioned concrete frame under low reversed cyclic loading
Authors: Hu Xiang , Xue Weichen , Liao Xiandong 
Published: March 2021

SummaryA precast posttensioned (PT) concrete frame, which consists of PT composite beams, precast columns, and cast‐in‐place (CIP) core regions, was developed as an emulative structure in this paper. Cyclic loading tests were conducted on two 1/3‐scale frames, including a precast frame and a CIP control specimen, to investigate the seismic performance. The axial compression ratios of the specimens were 0.4 and 0.3 for the interior and exterior columns, respectively. The test results showed that the precast frame failed in mixed sidesway mechanism which was similar to that of the CIP control specimen. The hysteresis loops of both the precast and CIP frames were pinched but relatively plump, which exhibited good energy dissipation. The loading capacity of the precast frame was comparable to that of the CIP control specimen, and the deviation of average value was less than 5%. The average ductility of the roof, first interstory, and second interstory of the precast frame was 4.18, 4.24 and 4.18, respectively, which was approximate to that of the CIP control specimen. The stiffness degradation of the precast frame was also found to be quite similar to that of the CIP control specimen. Based on the test results, a degenerated four‐linear restoring force model was developed.
Unilateral uterine torsion in two non‐gravid bitches: Imaging and histological features
Authors: Cordella Alessia , Mezzalira Giorgia , Negro Linda , Bertolini Giovanna 
Published: March 2021

AbstractA four‐year‐old nulliparous Labrador Retriever bitch and a seven‐year‐old nulliparous crossbreed bitch were referred for weakness and vomiting. Ultrasonographic examination revealed in both cases a large abdominal mass‐lesion with corpuscular fluid content; computed tomography examination revealed in both cases the uterine origin of the lesions, with findings consistent with torsion. Surgery confirmed the uterine torsion upon the ovarian pedicle in both cases, and at histological examination both presented a uterine polyp associated with haemorrhage and necrosis of the uterine wall. Both patients were released in good clinical conditions.
Indirekte Zuggurtungsosteosynthese bei isolierter Tuberculum-majus-Fraktur
Authors: Franz Alexander , Hinz Maximilian , Beitzel Knut , Imhoff Andreas 
Published: March 2021

ZusammenfassungTuberculum-majus-Frakturen machen etwa 20 % der proximalen Humerusfrakturen aus und sind häufige Begleitverletzungen bei glenohumeralen Luxationen. Während isolierte, nichtdislozierte Frakturen konservativ behandelt werden können, sind dislozierte Frakturen durch ihre Auswirkung auf die Biomechanik des Schultergelenks, insbesondere aufgrund der Beeinträchtigung der Rotatorenmanschette, als Indikation zur operativen Versorgung anzusehen. Während die meisten operativen Ansätze eine direkte Zuggurtungs- oder Plattenosteosynthese der Fraktur fokussieren, ist in manchen Fällen auch eine indirekte Zuggurtungsosteosynthese mittels Knochenankerfixationstechnik möglich. Dieser Artikel soll einen solchen Fall beschreiben sowie die Vor- und Nachteile der indirekten Zuggurtung gegenüber anderen Versorgungstechniken diskutieren.
Traumatische posteriore Luxation als seltene Ursache einer multidirektionalen Schulterinstabilität im Profisport
Authors: J. Ehmann Yannick , Burger Daniel , Hinz Maximilian , Imhoff Andreas B. , Siebenlist Sebastian 
Published: March 2021

ZusammenfassungDie multidirektionale Instabilität der Schulter als Folge einer traumatischen posterioren Luxation ist selten und in der Literatur nur unzureichend beschrieben. Hier präsentiert wird der Fall eines 28-jährigen Anschiebers aus dem deutschen Bob-Olympia-Kader, der eine weichteilige multidirektionale Instabilität in Folge einer traumatischen posterioren Luxation beim Mountainbiken erlitt. Die Stabilisierung des Schultergelenks erfolgte arthroskopisch mittels kombinierter anteriorer und posteriorer Labrumrefixation.
On the Role and Applications of Electron Magnetic Resonance Techniques in Surface Chemistry and Heterogeneous Catalysis
Authors: Chiesa Mario , Giamello Elio 
Published: March 2021

AbstractSome relevant aspects of Electron Paramagnetic Resonance (EPR) applied to the fields of surface chemistry and heterogeneous catalysis are illustrated in this perspective paper that aims to show the potential of these techniques in describing critical features of surface structures and reactivity. Selected examples are employed covering distinct aspects of catalytic science from morphological analysis of surfaces to detailed descriptions of chemical bonding and catalytic sites topology. In conclusions the pros and cons related to the acquisition of EPR instrumentations in an advanced laboratory of surface chemistry and heterogeneous catalysis are briefly considered.Graphic Abstract