bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chemical Group Substitution Enables Highly Efficient Mn4+Luminescence in Heterovalent Systems
Authors: Ming Hong , Zhao Yifei , Zhou Yayun , Molokeev Maxim S. , Wang Yuanjing , Song Enhai , Zhang Qinyuan 
Published: March 2023

AbstractDefects are a double‐edged sword for heterovalent metal‐ion doping phosphors. Along with the luminescence tunability of phosphors bestowed by defects, their expected luminescence efficiency would also be inevitably lowered due to the presence of these quenching sites. Herein, a chemical group substitution strategy is proposed, where inorganic polyhedrons act as the smallest chemical units during the structural evolution of the doping process. Such a method can not only effectively prevent the defect generation for charge compensation in heterovalent doping systems, but also facilitate the incorporation of activators into the matrix, leading to extremely high luminescence efficiency. The concept is first confirmed energetically favorable by first‐principles simulations. As a robust experimental proof, two newly reported Mn4+‐incorporated hexavalent organic‐inorganic hybrid oxyfluorides (TMA)2BO2F4:Mn4+(where TMA stands for tetramethylammonium, and B = W6+or Mo6+) present high quantum efficiency (up to 94.4%) and short lifetime (down to 2.26 ms) that are superior to the commercial red phosphor K2SiF6:Mn4+(≈84.8%, ≈8.06 ms). Utilizing the differences in decay lifetimes and thermal quenching behaviors of (TMA)2BO2F4:Mn4+and K2SiF6:Mn4+, a time‐ and temperature‐resolved single‐color multiplexing mode with high‐safety and easy‐access is developed for information security. This work offers an effective strategy to manipulate defect generation in luminescent materials.
Experimental and First‐Principles Study of Visible Light Responsive Memristor Based on CuAlAgCr/TiO2/W Structure for Artificial Synapses with Visual Perception
Authors: Liu Xiaoyan , Yu Jinghao , Ye Pengfei , Gu Liang , Qin Haiming , Wang Ning , Li Hang , Wang Yu , Zhang Miaocheng , He Nan , Wan Xiang , Lian Xiaojuan , Hu Er‐Tao , Tong Yi , Wang Lei 
Published: March 2023

AbstractThe development of vision bionic systems is indispensable for the perception, memory, and processing of optical signals, which promotes the exploration of efficient visual perception systems. In this work, a simple and novel two‐terminal optoelectronic memristor based on the CuAlAgCr/TiO2/W (CTW) structure is prepared, where the CuAlAgCr high‐entropy alloys are employed as the top electrode for the first time. Before annealing, the CTW optoelectronic memristor exhibited fascinating performance, including uniformly distributed operating voltage, reliable data retention, and a higher switching ratio. Moreover, the optoelectronic memristor can be reversibly switched between volatile and nonvolatile memories by adjusting compliance currents. The CTW optoelectronic memristor annealed in air exhibits various artificial synaptic functions, such as short‐term memory, optical learning, and forgetting behavior under the illumination of the laser. The photo‐response current is increased from nano‐ampere to micro‐ampere level. Furthermore, a logic function unit based on CTW optoelectronic memristor is proposed, which realizes “AND” operation. Furthermore, first‐principles calculations of the CTW structure are performed to describe the influence of photocarriers on the barrier height at the CuAlAgCr‐TiO2 interface, revealing the working mechanism of the CTW optoelectronic memristor. This work has greatly facilitated the development of optically operated artificial synaptic devices and vision bionic systems.
Lithiated Copper Polyphthalocyanine with Extended π‐Conjugation Induces LiF‐Rich Solid Electrolyte Interphase toward Long‐Life Solid‐State Lithium‐Metal Batteries
Authors: Wang Haonan , Cheng Hang , Li Dinggen , Li Faqiang , Wei Ying , Huang Kai , Jiang Bowen , Xu Henghui , Huang Yunhui 
Published: March 2023

AbstractThe composition of the solid electrolyte interphase (SEI) is crucial to stably operate solid‐state batteries based on lithium‐metal anodes. In this work, the redox state of the PVDF‐b‐PTFE (PVT) solid polymer electrolyte is regulated by introducing fully conjugated copper polyphthalocyanine metal (CuPcLi), improving the electron transfer kinetics to accelerate the decomposition of fluorinated ingredients. As a result, an effective SEI with enriched lithium fluoride forms in situ at the Li/electrolyte interface, which enhances the Li‐ion transport kinetics and regulates the lithium deposition behavior, delivering ultra‐stable lithium plating/stripping performance over 2000 h in the Li//Li half‐cell. In addition, the chemisorption between Cu2+and O atoms from TFSI−restrains the movement of anions in the electrolyte, and the CuPcLi improves the lithium ion release, exhibiting a high lithium‐ion conductivity of 0.8 mS cm−1and a high lithium‐ion transference number of 0.74. As a result, the solid polymer electrolyte of PVT‐10CuPcLi paired with LiFePO4delivers fantastic cyclic performance with a capacity retention of 92% even after 1000 cycles at 1 C at room temperature. When paired with high‐voltage LiNi0.6Co0.2Mn0.2O2(NCM622) cathode, the cells can be operated at 1 C with superior capacity retention over 88% after 300 cycles.
Freestanding‐Mode Tribovoltaic Nanogenerator for Harvesting Sliding and Rotational Mechanical Energy
Authors: Dong Sicheng , Bu Tianzhao , Wang Zhaozheng , Feng Yuan , Liu Guoxu , Zeng Jianhua , Wang Zhihao , Cao Jie , Zhang Zhi , Liu Feng , Zhang Chi 
Published: March 2023

AbstractA series of direct‐current tribovoltaic nanogenerators (TVNGs) with high current density have been developed for energy harvesting and mechanical sensing recently, but the lead wires that need to be connected to two relatively moving parts have greatly restricted the application of TVNG. Herein, a freestanding‐mode TVNG (FTVNG) is proposed based on metal, p‐type silicon (p‐Si), and n‐type silicon (n‐Si). As the freestanding part of metal simultaneously rubs against p‐Si and n‐Si, opposite direct current (DC) outputs can be generated, thus forming a DC output from p‐Si to n‐Si in the external circuit. Resulting from the distinctive structure, FTVNGs are applicable for harvesting energy from moving objects without attached wires. Additionally, by using steel needles to precisely control the actual contact area, the electrical output characteristics and influence laws of the tribovoltaic effect under different working parameters such as area and speed are studied. Moreover, FTVNG is integrated into the traditional rolling bearing as a triboelectric bearing, realizing energy recovery from the rotational motion of mechanical parts and speed sensing, which demonstrates the great application potential of TVNG in basic components and parts.
Polymerized Thermally Activated Delayed‐Fluorescence Small Molecules: Long‐Axis Polymerization Leads to a Nearly Concentration‐Independent Luminescence
Authors: Li Xue , Yan Libing , Liu Shen , Wang Shumeng , Rao Jiancheng , Zhao Lei , Tian Hongkun , Ding Junqiao , Wang Lixiang 
Published: March 2023

AbstractNowadays numerous thermally activated delayed fluorescence (TADF) polymers have been developed for PLEDs to realize high device performance and tunable emission colors. However, they often possess a strong concentration dependence on their luminescence including aggregation‐caused quenching (ACQ) and aggregation‐induced emission (AIE). Herein, we first report a nearly concentration‐independent TADF polymer based on the strategy of polymerized TADF small molecules. It is found that when a donor‐acceptor‐donor (D‐A‐D) type TADF small molecule is polymerized through its long‐axis direction, the triplet state is distributed along the polymeric backbone to effectively suppress the unwanted concentration quenching. Unlike the short‐axis one with an ACQ effect, the photoluminescent quantum yield (PLQY) of the resultant long‐axis polymer remains almost unchanged with the increasing doping concentration. Accordingly, a promising external quantum efficiency (EQE) up to 20 % is successfully achieved in a whole doping control window of 5–100 wt. %.
C‐Bound or O‐Bound Surface: Which One Boosts Electrocatalytic Urea Synthesis?
Authors: Liu Yingying , Tu Xiaojin , Wei Xiaoxiao , Wang Dongdong , Zhang Xiaoran , Chen Wei , Chen Chen , Wang Shuangyin 
Published: March 2023

AbstractThe electrocatalytic C−N coupling from carbon dioxide and nitrate under ambient conditions is kind of sustainable and promising alternative method for urea synthesis. To date, the influence of catalyst surface properties on molecular adsorption configuration and electrocatalytic urea synthesis activity is unclear. In this work, we proposed that the urea synthesis activity is closely linked with the localized surface charge on bimetallic electrocatalysts, it is found that a negatively charged surface induces C‐bound path and boosts urea synthesis. The urea yield rate can reach 13.1 mmol g−1 h−1 on negatively charged Cu97In3‐C, which is about 13 times that of positively charged Cu30In70‐C counterpart with O‐bound surface. This conclusion also applies to Cu−Bi and Cu−Sn systems. The molecular modification shifts the surface of Cu97In3‐C to positively charged state, which leads to a sharp decline in urea synthesis performance. We demonstrated that the C‐bound surface is more favorable than O‐bound one to boost electrocatalytic urea synthesis.
Development of polypyrrole/Ni(OH)2‐NiOcore‐shell nanocomposite as an optoelectronic device
Authors: Alruqi Mansoor , Rabia Mohamed , Elsayed Asmaa M. , Hanafi Hassan A. , Shaban Mohamed , Abdel Hamid Mostafa M. 
Published: March 2023

AbstractPolypyrrole (Ppy) and Ppy/Ni(OH)2‐NiO nanocomposite are prepared through the in situ polymerization oxidation reaction (on glass), in which the composite is formed through the oxidation of NiSO4. The prepared materials were characterized to reveal their morphology, chemical structure, and optical properties. The Ppy and Ppy/Ni(OH)2‐NiO have average particle sizes of 160 and 250 nm, respectively. Moreover, the bandgap values are 1.70 and 1.44 eV, respectively. Through the composite, the polymer acts as a shell (40 nm), while the Ni(OH)2‐NiO is the core. Analysis of the Ppy illustrates that the crystalline nature of the polymer increases after the composite formation, in which the pure Ppy has no sharp peaks, while the characteristic two peaks are formed after the composite formation. Moreover, a hexagonal Ni(OH)2is confirmed inside the composite. The applications of the glass/Ppy and glass/Ppy/Ni(OH)2‐NiO are carried out as optoelectronic devices, in which the testing is carried out under light/dark and monochromatic wavelengths light, theJphvalues are 0.12 and 0.85 mA·cm−2, respectively. The photoresponsivity (R) for the composite optoelectronic is 12.5 mA·W−1while the detectivity (D) is 2.79*1011 Jones.
Pitfalls and potentials in simulation studies: Questionable research practices in comparative simulation studies allow for spurious claims of superiority of any method
Authors: Pawel Samuel , Kook Lucas , Reeve Kelly 
Published: March 2023

AbstractComparative simulation studies are workhorse tools for benchmarking statistical methods. As with other empirical studies, the success of simulation studies hinges on the quality of their design, execution, and reporting. If not conducted carefully and transparently, their conclusions may be misleading. In this paper, we discuss various questionable research practices, which may impact the validity of simulation studies, some of which cannot be detected or prevented by the current publication process in statistics journals. To illustrate our point, we invent a novel prediction method with no expected performance gain and benchmark it in a preregistered comparative simulation study. We show how easy it is to make the method appear superior over well‐established competitor methods if questionable research practices are employed. Finally, we provide concrete suggestions for researchers, reviewers, and other academic stakeholders for improving the methodological quality of comparative simulation studies, such as preregistering simulation protocols, incentivizing neutral simulation studies, and code and data sharing.
Cottonseed hydrolysate supplementation alters metabolic and proteomics responses in Chinese hamster ovary cell cultures
Authors: Dhara Venkata Gayatri , Kumar Swetha , DeVine Lauren , Naik Harnish Mukesh , Cole Robert Norman , More Abbie J. , Lau Eduardo Catchon , Betenbaugh Michael J. 
Published: March 2023

AbstractHydrolysates are used as media supplements although their role is not well characterized. In this study, cottonseed hydrolysates, which contained peptides and galactose as supplemental substrates, were added to Chinese hamster ovary (CHO) batch cultures, enhancing cell growth, immunoglobulin (IgG) titers, and productivities. Extracellular metabolomics coupled with tandem mass tag (TMT) proteomics revealed metabolic and proteomic changes in cottonseed‐supplemented cultures. Shifts in production and consumption dynamics of glucose, glutamine, lactate, pyruvate, serine, glycine, glutamate, and aspartate suggest changes in tricarboxylic acid (TCA) and glycolysis metabolism following hydrolysate inputs. Quantitative proteomics revealed 5521 proteins and numerous changes in relative abundance of proteins related to growth, metabolism, oxidative stress, protein productivity, and apoptosis/cell death at day 5 and day 6. Differential abundance of amino acid transporter proteins and catabolism enzymes such as branched‐chain‐amino‐acid aminotransferase (BCAT)1 and fumarylacetoacetase (FAH) can alter availability and utilization of several amino acids. Also, pathways involved in growth including the polyamine biosynthesis through higher ornithine decarboxylase (ODC1) abundance and hippo signaling were upregulated and downregulated, respectively. Central metabolism rewiring was indicated by glyceraldehyde‐3‐phosphate dehydrogenase (GAPDH) downregulation, which corresponded with re‐uptake of secreted lactate in the cottonseed‐supplemented cultures. Overall, cottonseed hydrolysate supplementation modified culture performance by altering cellular activities critical to growth and protein productivity including metabolism, transport, mitosis, transcription, translation, protein processing, and apoptosis.Highlights
Cottonseed hydrolysate, as a medium additive, enhances Chinese hamster ovary (CHO) cell culture performance.
Metabolite profiling and tandem mass tag (TMT) proteomics characterize its impact on CHO cells.
Rewired nutrient utilization is observed via glycolysis, amino acid, and polyamine metabolism.
Hippo signaling pathway impacts cell growth in the presence of cottonseed hydrolysate.
Multimodal peptide ligand extracts parvovirus from interface in affinity aqueous two‐phase system
Authors: Joshi Pratik U. , Kroger Stephanie M. , Zustiak Silviya P. , Heldt Caryn L. 
Published: March 2023

AbstractAqueous two‐phase systems (ATPS) have found various applications in bioseparations and microencapsulation. The primary goal of this technique is to partition target biomolecules in a preferred phase, rich in one of the phase‐forming components. However, there is a lack of understanding of biomolecule behavior at the interface between the two phases. Biomolecule partitioning behavior is studied using tie‐lines (TL), where each TL is a group of systems at thermodynamic equilibrium. Across a TL, a system can either have a bulk PEG‐rich phase with citrate‐rich droplets, or the opposite can occur. We found that porcine parvovirus (PPV) was recovered at a higher amount when PEG was the bulk phase and citrate was in droplets and that the salt and PEG concentrations are high. To improve the recovery, A PEG 10 kDa‐peptide conjugate was formed using the multimodal WRW ligand. When WRW was present, less PPV was caught at the interface of the two‐phase system, and more was recovered in the PEG‐rich phase. While WRW did not significantly increase the PPV recovery in the high TL system, which was found earlier to be optimal for PPV recovery, the peptide did greatly enhance recovery at a lower TL. This lower TL has a lower viscosity and overall system PEG and citrate concentration. The results provide both a method to increase virus recovery in a lower viscosity system, as well as provide interesting thoughts into the interfacial phenomenon and how to recover virus in a phase and not at the interface.
Understanding the context of suicide in master's level counselling programmes in Australia
Authors: Howell Priyani 
Published: March 2023

AbstractThe purpose of this study was to understand the context of suicide in master's level counselling courses in Australia. The sample comprised courses accredited by the Australian Counselling Association (ACA) and the Psychotherapy and Counselling Federation of Australia (PACFA). A mixed methods content analysis was used to identify the explicitness of suicide in these courses and identify themes that emerged during the analysis. The sample consisted of 405 units of study contained in 26 courses. Suicide was explicit in 23 units in 17 courses. Suicide content was overshadowed by cultural diversity, ethics, morality and philosophy, research and self‐awareness, which was explicit in all 26 courses.
Antibacterial Potent of Acetylated and Non‐Acetylated Clove Bud Essential Oils and Their Main Compounds
Authors: Achraf Abdou , Fatima Ezzahra Maaghloud , Fatima Zahra Moukhfi , Abdoullah Bimoussa , Nour‐Eddine Chadli , Abdelhakim Elmakssoudi , Jamal Jamal Eddine , Mohamed Dakir 
Published: March 2023

AbstractClove bud is a medicinal plant used traditionally in Asia for the treatment of various disease. Previously, Clove oil is a potential source of an antimicrobial compounds especially vis‐a‐vis bacterial pathogens. However, the compound responsible for this activity remains to be investigated. Essential oil (EO) clove, acetylated essential oil clove, eugenol, and acetyleugenol were evaluate as an antibacterial potential agent against Staphyloccocus aureus (SE), Escherichia coli (EC) and Pseudomonas aeruginosa (PA). Essential oil containing eugenol was extracted from buds of Eugenia caryophyllata commonly named clove (Syzygium aromaticum (L.) (Family Myrtaceae) by a simple hydrodistillation. The analysis of the essential oils (EOs) using gas chromatography‐mass spectrometry (GC‐MS) shows eugenol as the major constituent with 70.14 % of the total. The Eugenol was isolated from the EO using chemical treatment. Afterwards, the EO and eugenol were converted to acetylated EO and acetyleugenol, respectively using acetic anhydride. The antibacterial result revealed that all compounds showed a strong activity against the three strains. The Staphyloccocus aureus and Pseudomonas aeruginosa were extremely sensitive against eugenol with an inhibition diameters of 25 mm. The MIC values of eugenol versus S. aureus and P. aeruginosa were 0.58 and 2.32 mg/mL, respectively, while the MIB values were 2.32 mg/mL and 9.28 mg/mL.
Floral Pollen Bioactive Properties and Their Synergy in Honeybee Pollen
Authors: Velásquez Patricia , Muñoz‐Carvajal Eduardo , Grimau Lissette , Bustos Daniela , Montenegro Gloria , Giordano Ady 
Published: March 2023

AbstractHoneybee pollen (HBP) is a mixture of floral pollen collected by honeybees near the hive. It is characterized by a composition rich in phenolic compounds, carotenoids and vitamins that act as free radicals scavengers, conferring antioxidant and antibacterial capacity to the matrix. These bioactive properties are related to the botanical origin of the honeybee pollen. Honeybee pollen samples were collected from different geographical locations in central Chile, and their total carotenoid content, polyphenols profile by HPLC/MS/MS, DPPH radical scavenging capacity, and antimicrobial capacity against S. pyogenes, E. coli, S. aureus, and P. auriginosa strains were evaluated. Our results showed a good carotenoids content and polyphenols composition, while antioxidant capacity presented values between 0–95 % for the scavenging effect related to the botanical origin of the samples. Inhibition diameter for the different strains presented less variability among the samples, Furthermore, binary mixtures representing the two most abundant species in each HBP were prepared to assess the synergy effect of the floral pollen (FP) present in the samples. Data shows an antagonist effect was observed when assessing the carotenoid content, and a synergy effect often presents for antimicrobial and antioxidant capacity for bee pollen samples. The bioactive capacities of the honeybee pollen and their synergy effect could apply to develop new functional ingredients for the food industry.
Derivatization of Mirror‐Image l‐Nucleic Acids with 2′‐OMe Modification for Thermal and Structural Stabilization
Authors: Dantsu Yuliya , Zhang Wen 
Published: March 2023

AbstractTo further expand the functionality and enhance the stability of mirror‐image nucleic acids as advanced agents for basic research and therapeutic design, we have synthesized 2′‐deoxy‐2′‐methoxy‐l‐uridine phosphoramidite and incorporated it into l‐DNA and l‐RNA by solid‐phase synthesis quantitatively. We found that the thermostability of l‐nucleic acids is dramatically improved after introducing the modifications. Moreover, we successfully crystallized both l‐DNA and l‐RNA duplexes containing the 2′‐OMe modifications and sharing identical sequences. Crystal structure determination and analysis revealed the overall structures of the mirror‐image nucleic acids, and for the first time it was possible to interpret the structural deviations caused by 2′‐OMe and 2′‐OH groups in the oligonucleotides, which are very similar. This novel chemical nucleic acid modification has the potential to be used to design nucleic acid‐based therapeutics and materials in the future.
Complicated appendicitis, acute pancreatitis, pleural effusion, and sinus bradycardia in a COVID‐19 patient
Authors: Hatami Danial , Alavi Seyed Mohamamd Amin 
Published: March 2023

AbstractThis study shows that complicated appendicitis and acute pancreatitis could occur during a COVID‐19 infection, since the same gastrointestinal manifestations are notable in all aforementioned diseases. Sinus bradycardia is a side effect of remdesivir. Both COVID‐19 infection and remdesivir therapy can elevate liver transaminases.
Sodium Insertion into Fe[Fe(CN)6] Framework Prepared by Microwave‐Assisted Co‐Precipitation
Authors: Maroni Fabio , Li Min , Dongmo Saustin , Gauckler Cornelius , Wohlfahrt‐Mehrens Margret , Giorgetti Marco , Marinaro Mario 
Published: March 2023

AbstractPrussian blue analogues (PBAs) are interesting materials for Na electrochemical insertion, owing to their ease of synthesis, rigid open framework and large interstitial space. In this work, iron hexacyanoferrate nanoparticles, FeIII[FeIII(CN)6], also known as Berlin green (BG), where both Fe centers are in the Fe(III) configuration, have been synthesized by an easy microwave assisted co‐precipitation method, with an average particle size of around 44 nm. The BG nanoparticles exhibited a 120 mAh g−1 specific capacity with a capacity retention of 84.8 % over 100 cycles at 20 mA g−1 current and up to 80 mAh g−1 at 10 C rate. The initial charge and discharge processes were fully investigated by ex‐situ X‐ray absorption spectroscopy (XAS). The XAS results reveal that there is some irreversibility in the initial electrochemical processes and the Fe−C and Fe−N bond lengths change during the first charge/discharge cycle. This effect was attributed to BG electrode activation processes, and partly explained the observed capacity fading.