bluuebunny/crossref_metadata_2025_split huggingface dataset:
El anhelo del hielo
Authors: López Cortez Solimán 
Published: March 2022

El texto propuesto por el artista multimedia y fundador del Harddiskmuseum, Solimán López, es un extracto de su reciente ensayo artístico “el ojo sincrónico”. Dicho ensayo (será publicado en abril 2020) plantea un recorrido ideológico y personal sobre diferentes tecnologías implantadas en el siglo XXI y cómo estás están afectando de manera notable a las estructuras del arte contemporáneo, el pensamiento crítico, la sociología, la psicología e incluso la biología. En esta publicación para la revista Contemporânea, la mirada se centra en el concepto de “virrealidad” propuesto por el artista para definir una nueva percepción del mundo que ya no está solamente construida por los parámetros ofrecidos por las experiencias sensoriales “tradicionales” como son la visión, la percepción, el gusto, el tacto u otras, sino que a estas, se suman los datos ofrecidos por las nuevas tecnologías y el nuevo imaginario mental producido por estas.
Impact of COVID 19 on the Production of Sardines in Bulan, Sorsogon, Southern Luzon, Philippines
Authors: B. Mendoza, Jr. Antonino , M. Nieves Plutomeo 
Published: March 2022

Sardine fishery is a multimillion industry in Bulan, Sorsogon. It provides opportunity of the smallholders catching fish but also through various interventions across supply chain that include boat and net repairman, traders, brokers, wholesalers, retailers and labors, transportation, processing and canning. The study recorded that sardine’s production in Bulan, Sorsogon was not significantly affected by COVID 19 pandemics with a monthly average production of 16mt and an estimated annual production of 1,887mt but this had reduced income of small-scale sardine fishermen and operators around 40%. Income reduction was attributed mostly to strict implementation of movement and mass gatherings. The research team also identified that limited transport mechanism to local markets and Metro Manila and suburbs along with the social distancing contributed much to the drop of farm gate price of sardine. It was estimated that PhP 11M lost occurred to the total annual income of sardine fishers and operators due to the pandemic.
Effect of Soybean Crop Residue Incorporation, Biofertilizers on Nutrient Uptake, Yield of Chickpea (Cicer arietinum L.)
Authors: Dhegavath Swetha , Anjaiah T. , Sharma S. H. K. , Chauhan Sreedhar 
Published: March 2022

The investigation was laid out on clay loam soil at Agricultural Research Station, Adilabad during rabi, 2020 with the aim to understand the chickpea crop performance with residue incorporation and use of biofertilizers along with varied NP recommended doses (0,50,75 and 100%). Results, revealed that, i.e., application of fertilizers i.e., 20:50:20 kg ha-1 N: P2O5:K2O recorded significantly higher grain yield (2558 kg ha-1) and stover yield (3255 kg ha-1) among all the treatments. Significantly superior nitrogen content (3.49 %), P content (0.53%), K content (1.62 %) and S content (0.34 %) by grain were observed with full dose of NPK application. Nutrient uptake of N (104.47 kg ha-1), P (15.29 kg ha-1), K (47.95 kg ha-1) and S (10.13 kg ha-1) by grain at harvest.
Evaluation of Sedation and Monitoring for Gastrointestinal Endoscopy among Gastrointestinal Endoscopy Practitioners in Nigeria
Authors: Wakama Itekena E. , A. Ijah Rex Friday Ogoronte , Madubuike Chinyere O. 
Published: March 2022

Background: Several guidelines have been developed for the practice of gastrointestinal endoscopy. The rationale for sedation in gastrointestinal endoscopy is the alleviation of pain/discomfort and anxiety experienced by patients during the procedure. The aim of this study was to evaluate the use of sedation for gastrointestinal endoscopy among practitioners of gastrointestinal endoscopy at a conference in Nigeria.
Materials and Methods: A cross-sectional descriptive study was carried out among gastrointestinal endoscopy practitioners. The study setting was the 13th annual general meeting and scientific conference of the Society for Gastroenterology and Hepatology in Nigeria (SOGHIN) that held in Port Harcourt Nigeria from 26th to 30th of July 2021.
Results: A total of one hundred and four (104) respondents participated in the study. Fifty-two (50.0%) respondents carried out ≥15 upper gastrointestinal endoscopies per month in their centre. It was the opinion of 36 (34.6%) respondents that ≥15 lower gastrointestinal endoscopies per month were being done in their centre. Twenty-six (25%) respondents used the drug midazolam for sedating patients for upper gastrointestinal endoscopy, and another 26 (25%) use diazepam and pentazocine. Under-sedation was a problem for 44 (42.3%) respondents occasionally led to aborting the procedure. There was significant relationship between achievement of ≥ 90% sedation
adequacy and the type of personnel administering the drug (P=0.000).
Conclusion: Although better sedation has been reported to be achieved with the use of midazolam, there was no uniformity in the practice of sedation for gastrointestinal endoscopy among the respondents.
Pain Sensitization as a Potential Mediator of the Relationship Between Sleep Disturbance and Subsequent Pain in Rheumatoid Arthritis
Authors: Song Jing , Muhammad Lutfiyya N. , Neogi Tuhina , Dunlop Dorothy D. , Wohlfahrt Alyssa , Bolster Marcy B. , Bingham Clifton O. , Clauw Daniel J. , Marder Wendy , Lee Yvonne C. 
Published: March 2022

ObjectiveMany patients with rheumatoid arthritis (RA) experience sleep disturbances, commonly attributed to joint pain. Sleep disturbances could also influence pain. One mechanism may be through dysregulated pain processing, manifested by enhanced pain sensitivity. The present study was undertaken to examine the role of pain sensitization, measured by quantitative sensory testing (QST), as a mediator in the pathway of sleep disturbance leading to subsequent pain.MethodsWe used longitudinal data from 221 patients with active RA who were followed for 12 weeks after initiating a disease‐modifying antirheumatic drug. Baseline QST included pressure pain thresholds at articular (wrists, knees) and nonarticular (trapezius, thumbnails) sites, temporal summation (TS) at the wrist and forearm, and conditioned pain modulation (CPM). Baseline sleep disturbance and subsequent pain intensity were assessed using the Patient‐Reported Outcomes Measurement Information System (PROMIS). We evaluated correlations between sleep disturbance, QSTs, and subsequent pain intensity. Mediation analyses separately assessed each QST as a mediator, adjusting for baseline confounding factors.ResultsSleep disturbance was correlated with all QST measures except wrist TS and CPM. Sleep disturbance significantly predicted subsequent pain (coefficient for a meaningful increase of 5 units in sleep disturbance = 0.32 (95% confidence interval 0.11, 0.50) in multiple regression. QST mediated 10–19% of this effect.ConclusionPain sensitization may be one mechanism through which sleep disturbance contributes to pain. The small magnitude of association indicates that unmeasured pathways may contribute to this relationship. Intervention studies are needed to establish causality and determine whether improving sleep can improve pain in patients with RA.
Demonstration of Neuromodulation‐inspired Stashing System for Energy‐efficient Learning of Spiking Neural Network using a Self‐Rectifying Memristor Array
Authors: Cheong Woon Hyung , Jeon Jae Bum , In Jae Hyun , Kim Geunyoung , Song Hanchan , An Janho , Park Juseong , Kim Young Seok , Hwang Cheol Seong , Kim Kyung Min 
Published: April 2022

AbstractNeuromorphic engineering aims to mimic brain functions to achieve energy‐efficient artificial intelligence. Since researchers have indicated that memristors can mimic synapses and neurons, various studies have demonstrated the operation of neural networks using memristive dot product engine (MDPE) hardware. However, although several feasible implementations of synapse and neuron behaviors have been reported, few studies have demonstrated the system‐level energy‐efficient operation on the hardware. This work proposes a novel system inspired by the neuromodulation of the brain, referred to as a “stashing system.” In the system, the trained synapses are stashed temporarily during the training of the spiking neural network and then merged for inferencing. The software simulation first confirmed the working principle of the stashing system. Then, a hardware demonstration is performed at an integrated 32 × 32 MDPE embodying a self‐rectifying and electroforming‐free memristor cell to validate the system. The results confirm that energy consumption in the memristor array is reduced by 37% for the unsupervised learning of the MNIST dataset.
Irregular Microdome Structure‐Based Sensitive Pressure Sensor Using Internal Popping of Microspheres
Authors: Jung Young , Choi Jungrak , Lee Wookjin , Ko Jong Soo , Park Inkyu , Cho Hanchul 
Published: March 2022

AbstractModifying the surface morphology of an elastomer surface into 3D microstructures is crucial for various soft sensor applications. However, processes based on typical mold microfabrication and elastomer casting remain the dominant methodologies. This study demonstrates a novel strategy for generating 3D and irregular microdome structures for flexible pressure sensors through the internal popping of microspheres. When thermal treatment is applied to a composite film composed of microspheres and an elastomer matrix, the microspheres expand, and irregular microdome structures are generated. This composite film with an irregular microdome structure is utilized as a piezoresistive pressure‐sensing film. The sensor shows high sensitivity (−50.45 kPa−1) owing to the heterogeneous contact change between the irregular microdome structure and a laser‐induced graphene electrode; it also exhibits a short response time (τ10‐90% ≈ 39 ms), excellent repeatability, and high reliability. The sensor is applied in a fingertip‐shaped pressure sensor to detect the blood pulse on the index finger and on electronic skin to recognize soft objects. Furthermore, a pressure sensor array that enables various functions such as drawing, multitouch, and deep learning‐based motion control, is demonstrated.
Stretchable Triboelectric Self‐Powered Sweat Sensor Fabricated from Self‐Healing Nanocellulose Hydrogels
Authors: Qin Ying , Mo Jilong , Liu Yanhua , Zhang Song , Wang Jinlong , Fu Qiu , Wang Shuangfei , Nie Shuangxi 
Published: April 2022

AbstractThough visualizing perspiration constituents is crucial for physiological evaluation, inadequate material healing and unreliable power supply methods restrict its applications. Herein, a fully flexible self‐powered sweat sensor is fabricated from a cellulose‐based conductive hydrogel to address these issues. The hydrogel electrode is composed of a cellulose nanocomposite polymerized in situ with polyaniline and cross‐linked with polyvinyl alcohol/borax. The cellulose nanocomposites furnish the sweat sensor with tensile and electrical self‐healing efficiencies exceeding 95% within 10 s, a stretchability of 1530%, and conductivity of 0.6 S m−1. The sweat sensor quantitatively analyzes Na+, K+, and Ca2+ contents in perspiration, to sensitivities of 0.039, 0.082, and 0.069 mmol–1, respectively, in real time via triboelectric effect and wirelessly transmits the results to a user interface. This fabricated sweat sensor with high flexibility, stability, and analytical sensitivity and selectivity provides new opportunities for self‐powered health monitoring.
Biodiversity Benefits for Size Modulation of Metal Nanoparticles to Achieve In Situ Semi‐Oxidation toward Optimized Electrocatalytic Oxygen Evolution
Authors: Zhang Jia , Sun Rong‐Zhi , Zhang Xue‐Feng , Wu Jun‐Xi , Dou Yu‐Hai , Zhu Xuan‐Yi , Yu Li‐Hong , Guo Lu‐Yao , Liu Min‐Ling , Guo Lin , Cao Li‐Ming , He Chun‐Ting , Chen Xiao‐Ming 
Published: March 2022

AbstractBiodiversity endows similar species with subtle differences in composition, microstructure, and surface chemistry, making biomass a promising precursor to control the resulting active structure for heterocatalysis. Here, it is shown that Tremella fuciformis (Tfu), possessing an abundant porous structure and favorable metal affinity, is favorably serves as a precursor for confining uniform metal nanoparticles, by comparing the chemical characteristics of six varieties of agarics. The modest size of Co in the Tfu derived composite, Co@NPC‐Tfu (NPC = N, P co‐doped carbon), is suitable for in situ semi‐oxidation during oxygen evolution reaction (OER), forming a stable core‐shell structure of Co3O4@Co. Thus, Co@NPC‐Tfu can be used as a state‐of‐the‐art electrocatalyst for OER with an overpotential of 213.6 ± 4.1 mV at 10 mA cm−2, and a significant turnover frequency of 3.21 s−1 at 300 mV, benefitting from the optimum trade‐off between the atom utilization and electrical conductivity. Operando spectroscopy and theoretical calculations unveil the occupied state modulation of the robust carbon‐bonded POx groups, which optimizes the intermediate adsorption to accelerate OER kinetics. Moreover, Tfu derived Ni@NPC‐Tfu can be also prepared as a high‐performance hydrogen evolution reaction electrocatalyst, which can be utilized for efficient overall water splitting coupled with Co@NPC‐Tfu.
Hydrogen‐Bond‐Assisted Solution Discharge in Aprotic Li–O2 Batteries
Authors: Xiong Qi , Li Chaole , Li Ziwei , Liang Yulong , Li Jianchen , Yan Junmin , Huang Gang , Zhang Xinbo 
Published: April 2022

AbstractSurface discharge mechanism induced cathode passivation is a critical challenge that blocks the full liberation of the ultrahigh theoretical energy density in aprotic Li–O2 batteries. Herein, a facile and universal concept of hydrogen‐bond‐assisted solvation is proposed to trigger the solution discharge process for averting the shortcomings associated with surface discharge. 2,5‐Di‐tert‐butylhydroquinone (DBHQ), an antioxidant with hydroxyl groups, is introduced as an exemplary soluble catalyst to promote solution discharge by hydrogen‐bond‐assisted solvation of O2− and Li2O2 (OH···O). Thus, a Li–O2 battery with 50 × 10−3 m DBHQ delivers an extraordinary discharge capacity of 18 945 mAh g−1 (i.e., 9.47 mAh cm−2), even surpassing the capacity endowed by the state‐of‐the‐art reduction mediator of 2,5‐di‐tert‐butyl‐1,4‐benzoquinone. Besides, an ultrahigh Li2O2 yield of 97.1% is also achieved due to the depressed reactivity of the reduced oxygen‐containing species (O2−, LiO2, and Li2O2) by the solvating and antioxidative abilities of DBHQ. Consequently, the Li–O2 battery with DBHQ exhibits excellent cycling lifetime and rate capability. Furthermore, the generalizability of this approach of hydrogen‐bond‐assisted solution discharge is verified by other soluble catalysts that contain OH or NH groups, with implications that could bring Li–O2 batteries one step closer to being a viable technology.
Dynamic Investigation of Battery Materials via Advanced Visualization: From Particle, Electrode to Cell Level
Authors: Zeng Cheng , Liang Jianing , Cui Can , Zhai Tianyou , Li Huiqiao 
Published: April 2022

AbstractLi‐ion batteries, the most‐popular secondary battery, are typically electrochemical systems controlled by ion‐insertion dynamics. The battery dynamics involve mass transport, charge transfer, ion–electron coupled reactions, electrolyte penetration, ion solvation, and interfacial evolution. However, it is difficult for the traditional electrochemical methods to capture the accurate and individual details of the dynamic processes in “black box” batteries; instead, only the net result of multi‐factors on the whole scale. Recently, different advanced visualization techniques have been developed, which provide powerful tools to track and monitor the internal real‐time dynamic processes, giving intuitive details and fine information at various scales from crystal lattice, single particle, electrode to cell level. Here, the recent progress on the investigation of electrochemical dynamics in battery materials are reviewed, via developed techniques across wide timescales and space‐scales, including the dynamic process inside the active particle, kinetics issues at the electrode/electrolyte interface, dynamic inhomogeneity in the electrode, and dynamic transportation at the cell level. Finally, the fundamental principles to improve the battery dynamics are summarized and new technologies for future more stringent conditions are highlighted. In prospect, this review opens sight on the battery interior for a clearer, deeper, and more thorough understanding of the dynamics.
A New Rapid Microfluidic Detection Platform Utilizing Hydrogel‐Membrane under Cross‐Flow
Authors: Nash Adrian T. , Foster Daniel A. N. , Thompson Shyan I. , Han Seungyoon , Fernandez Madison K. , Hwang Dae Kun 
Published: March 2022

AbstractHydrogel‐based biosensing, based on antigen–antibody binding, has been utilized for various biomedical applications such as cancer monitoring. Hydrogels offer highly sensitive detection with the prevention of nonspecific binding because of 3D porous structure and hydrophilicity. However, these hydrogel‐based biosensing platforms require a time scale of hours to complete immunoassays because binding events are diffusion‐limited, where target biomolecules must diffuse into and throughout the 3D porous network. Here, a new rapid microfluidic platform is introduced utilizing a cross‐flow induced advective‐transportation of targets into a hydrogel membrane with fluorescent reporting. This flow enhanced delivery of target analytes significantly reduces their detection time to under 15 min. This flow effect is also numerically investigated on the detection process. Both numerical and experimental results show an exponential decrease in the detection time. More importantly, the cross‐flow configuration in our platform provides an additional size‐based filtration feature that effectively selects against larger components in a blood sample, such as red blood cells, during the detection process. This addition, not seen in conventional biosensing platforms, eliminates the need for blood sample prefiltration.
Mixed Ionic and Electronic Conducting Eutectogels for 3D‐Printable Wearable Sensors and Bioelectrodes
Authors: Picchio Matías L. , Gallastegui Antonela , Casado Nerea , Lopez‐Larrea Naroa , Marchiori Bastien , del Agua Isabel , Criado‐Gonzalez Miryam , Mantione Daniele , Minari Roque J. , Mecerreyes David 
Published: April 2022

AbstractEutectogels are a new class of soft ion conductive materials that are attracting attention as an alternative to conventional hydrogels and costly ionic liquid gels to build wearable sensors and bioelectrodes. Herein, the first example of mixed ionic and electronic conductive eutectogels showing high adhesion, flexibility, nonvolatility, and reversible low‐temperature gel transition for 3D printing manufacturing is reporting. The eutectogels consist of choline chloride/glycerol deep eutectic solvent, poly(3,4‐ethylenedioxythiophene): lignin sulfonate, and gelatin as the biocompatible polymer matrix. These soft materials are flexible and stretchable, show high ionic and electronic conductivities of 7.3 and 8.7 mS cm−1, respectively, and have high adhesion energy. Due to this unique combination of properties, they could be applied as strain sensors to precisely detect physical movements. Furthermore, these soft mixed ionic electronic conductors possess excellent capacity as conformal electrodes to record epidermal physiological signals, such as electrocardiograms and electromyograms, over a long time.
Wearable Multifunctional Graphene‐Based Aerogel/Spacer Fabric Composites for Sensing and Impact Protection
Authors: Wang Shu , Ning Huiming , Liu Feng , Hu Ning , Zhang Hao , Zou Rui , Wen Jie , Huang Kaiyan , Wu Xiaopeng , Song Zengrui , Xiang Chenxing , Wang Ziying 
Published: March 2022

AbstractA multifunctional composite composed of a spacer fabric and a porous graphene‐based aerogel is proposed for sensing and impact protection applications. The combination of the mechanical properties of the spacer fabric and the electrical properties of the graphene‐based aerogel provides a versatile composite material with a strain sensitivity of 1.48, a temperature sensitivity of −0.004 °C−1, and a protection factor of 45%. The material is also lightweight, hydrophobic, and thermally insulating. It is therefore suitable for both high‐temperature (nearly 180 °C) and low‐temperature applications. Consequently, the developed multifunctional composite has potential for use as a building material and as a smart cushion for healthcare.
Ruthenium‐Catalyzed C7‐Formylmethylation or Sequential Acetalization of Indolines with Vinylene Carbonate in Different Solvents
Authors: Liu Min , Yan Kelu , Wen Jiangwei , Shang Wenda , Sui Xinlei , Wang Xiu 
Published: April 2022

AbstractThe ruthenium‐catalyzed C7‐formylmethylation or sequential acetalization of indolines with vinylene carbonate has been realized under simple and easy‐to‐operate reaction systems. Several preliminary mechanistic studies and derivatization reactions for the conversion of formylmethyl group were also performed. This transformation offers an alternative approach for the direct conversion of C(sp2)−H to formylmethyl or corresponding acetal structure.magnified image
1,2‐Dialkylation of 1,1‐Arylboryl Alkenes Via Borata‐Alkene Intermediate
Authors: González Sara , Salvado Oriol , Fernández Elena 
Published: April 2022

AbstractWe describe here the conjugate addition of tert‐butyllithium to vinyl systems of boronic esters to generate a borata‐alkene intermediate, followed by a sequential SN2 reaction with alkyl halides, at room temperature. We envisioned this goal through engaged C(sp3) chemical entities avoiding metal catalysts, additives, radical initiators or specific irradiation. This reaction guarantees that the new tetrasubstituted carbon formed retains all the C atoms from the three starting materials involved in the assembly.magnified image
Coding‐Feeding Metasurface for Diffusion and Dual‐Band Emission
Authors: Huang Guo Shuai , Li Si Jia , Li Zhuo Yue , Liu Xiao Bin , Ji Di Liao Ri , Cao Xiang Yu 
Published: April 2022

AbstractAs 2D metamaterials, metasurfaces are well known due to the distinctive manipulation of the amplitude, phase, polarization, and propagation for electromagnetic (EM) waves. However, the existing metasurfaces are mainly designed to control the incident waves. Herein, a coding‐feeding metasurface (CFMS) with two functions of dual‐band emission and diffusion for incidences simultaneously is proposed. The zigzag emission patch and two arc‐split triangle patches for polarization conversion are nested together on a shared aperture of a unit cell for CFMS. The genetic optimization algorithm is introduced for diffusion. A prototype is fabricated and measured to validate the proposed CFMS with dual‐function. The experimental results agree well with the simulated data, which verify the diffusion and emission for CFMS. The CFMS with the lightweight, compact, and low profile has the potential applications in imaging, detection, and wireless communication systems for stealth aircraft.