bluuebunny/crossref_metadata_2025_split huggingface dataset:
Knowledge, Awareness, & Attitude towards Implant Therapy for Replacing Missing Teeth: A Cross Sectional Survey from Northern West Bengal, India
Authors: Akram Washim , Sinha Arindam , Pal Moumita , Nagaraj E. , Kondody Rony T. 
Published: July 2022

Aims: The purpose is to assess the awareness, knowledge & attitude towards implant therapy for replacing missing teeth.
Material & Methods: This cross-sectional study was conducted in Department of Dentistry of Malda Medical College & Hospital, Malda, West Bengal, over a period of July 2019 to July 2021. A total of 1200 partial or complete edentulous patient, age above 15 years were selected. A standardized 9 close ended questions were asked to patients. The data were collected in tabular form and statistically analyzed by Chi-Square test.
Results: We found that 22.83% (274) were aware about dental implant therapy, among them male were 13%(156) and female were 9.83%(118). The difference between male and female awareness were statistically highly significant (p<.001). The major source of information regarding implant was dentist (55.83%). Only 8.08% (97) were interested in implant therapy in near future, among them 5.08%(61) male and 3%(36) were female. The difference were statistically non significant (p=0.62). Major reason for not opting implant therapy was high cost (32.76%).
Conclusion: Within limitation of the study we concluded very less awareness (22.83%) regarding implant therapy among the Malda Population. So there is need for bringing more awareness program brought by various Government & Public organization to educate the general population
Horizontes futuros em uma revolta escrava no sul do Brasil
Authors: Mügge Miquéias H. 
Published: July 2022

Resenha de:
PEDROSO, Wagner de Azevedo. Nazário e um plano de rebelião escrava na Aldeia dos Anjos: “os brancos eram uns pelos outros, por isso os negros também deviam fazer o mesmo”. Porto Alegre: Editora Coragem, 2020. 167 p.
Photon‐Pen Writing for Metal Oxide‐Based Versatile Nanosensors
Authors: Bae Garam , Kim Minji , Jang Moonjeong , Kwon Yeong Min , Yim Soonmin , Song Wooseok , Myung Sung , Lee Sun Sook , Hasan Tawfique , An Ki‐Seok 
Published: July 2022

AbstractLow‐temperature processes and simplification of lithographic techniques are key challenges for the fabrication of solution‐processed metal oxide‐based nanodevices. Recent breakthroughs in location‐specific synthetic methodologies involving inkjet printing and photon‐activation routes have enabled lithography‐free and bottom‐up fabrication of such devices. However, a revolutionary strategy to resolve room‐temperature direct fabrication of metal oxide‐based materials still remains elusive. Here, a pertinent route enabling wafer‐scale, location‐specific direct‐writing, termed “photon‐pen writing (PPW),” of functional metal oxide‐based devices is proposed. Using PPW, fabrication of elaborate patterns of metal oxides is demonstrated through location‐specific dechlorination and subsequent oxidation via thermal energy transfer of a focused infrared laser in ambient environment. By tailoring process parameters, precise manipulation of the chemical and structural features of the PPW‐produced metal‐oxide patterns are demonstrated. The versatility of the PPW process by realizing a highly sensitive, stable, uniform, and wafer‐scale nanosensor array for gas and light detection using PPW‐ZnO channel and PPW‐ITO electrodes is demonstrated, with 4.1% of response at 50 ppb NO2 and 2.93 ± 0.23 µA of photocurrent for 0.76 mW cm−2, 254 nm UV light. A new route toward wafer‐scale production of bespoke nanosensor arrays onto single chip for next‐generation nanoelectronics is introduced.
Durability Improvement of Breeze‐Driven Triboelectric‐Electromagnetic Hybrid Nanogenerator by a Travel‐Controlled Approach
Authors: Luo Yingjin , Chen Pengfei , Cao Leo N. Y. , Xu Zijie , Wu Ying , He Gaofa , Jiang Tao , Wang Zhong Lin 
Published: July 2022

AbstractTriboelectric nanogenerator (TENG), as an emerging technology for distributed energy harvesting, provides a promising energy solution for self‐powered environmental monitoring. However, the abrasion of triboelectric materials lowers the output performance of TENGs, severely limiting their practical applications. Herein, a novel travel‐controlled approach, by combining a gear train and cam switch, is proposed to reduce the mechanical wear. The automatic switching between the contact and non‐contact modes can be achieved in a tunable frequency, showing excellent electrical stability by maintaining 90% of electric outputs after continuous operation for 80 h (1 920 000 cycles). Meanwhile, based on the structural optimization, the power density per unit wind speed of the travel‐controlled TENG (TC‐TENG) is doubled as compared with that of previous related works. Moreover, by integrating the triboelectric‐electromagnetic hybrid device with an energy management circuit, a self‐powered close‐looped environmental monitoring and alarming system are demonstrated. Under breezy conditions (below 3 m s−1), the system can detect the environmental information continuously and steadily, and transmit it wirelessly to a mobile device. This work renders a novel approach to reducing the wear in TENGs toward self‐powered wireless sensing systems, showing broad application prospects in distributed unmanned environmental monitoring, smart farming, and Internet of Things.
Emergent Magnetic Fan Structures in Manganite Homojunction Arrays
Authors: Guasco Laura , Khaydukov Yury , Kim Gideok , Keller Thomas , Vorobiev Alexei , Devishvili Anton , Wochner Peter , Christiani Georg , Logvenov Gennady , Keimer Bernhard 
Published: July 2022

AbstractDevices with tunable magnetic noncollinearity are important components of superconducting electronics and spintronics, but they typically require epitaxial integration of several complex materials. The spin‐polarized neutron reflectometry measurements on La1−xSrxMnO3 homojunction arrays with modulated Sr concentration reported herein have led to the discovery of magnetic fan structures with highly noncollinear alignment of Mn spins and an emergent periodicity twice as large as the array's unit cell. The neutron data show that these magnetic superstructures can be fully long‐range ordered, despite the gradual modulation of the doping level created by charge transfer and chemical intermixing. The degree of noncollinearity can be effectively adjusted by low magnetic fields. Notwithstanding their chemical and structural simplicity, oxide homojunctions thus show considerable promise as a platform for tunable complex magnetism and as a powerful design element of spintronic devices.
Volatile Organic Compound Sensing Array and Optoelectronic Filter System using Ion‐Pairing Dyes with a Wide Visible Spectrum
Authors: Kim Donghyun , Hwang Ki‐Seob , Koh Won‐Gun , Lee Chanmin , Lee Jun‐Young 
Published: July 2022

AbstractAn ideal dye‐based sensing array has essential design requirements, including facile preparation methodology, tolerance to water vapor, a broad range of color‐responsive changes, and a simple readout system. Here, a brief synthetic route is developed for ion‐pairing dyes exhibiting unusual chromatic changes across the entire visible spectrum. It requires only mixing and precipitation under mild conditions. The dyes are applied to a sensing array containing 12 sensing elements with different initial states. Owing to the numerous color variations of the dyes, the color map generated by the array is highly simple yet sufficiently accurate to distinguish among the different functional groups (such as amines, aldehydes, and carboxylic acids) as well as carbon chain lengths. Principle component analysis (PCA) demonstrates that volatile organic compounds (VOCs) can be well classified according to the color changes of the sensing array. The ion‐pairing dyes are embedded into 3D stacked nanofibers via electrospinning, and function as effective harmful‐gas (e.g., formaldehyde) sensors with sub‐ppm theoretical detection limits (0.15 ppm). Finally, the 3D stacked nanofibers can be employed in an optoelectronic filter system that automatically checks for formaldehyde in the surroundings and also confirms the effective removal of the detected formaldehyde by the gas filter cartridge.
Self‐Sacrificially Degradable Pseudo‐Semiconducting Polymer Nanoparticles that Integrate NIR‐II Fluorescence Bioimaging, Photodynamic Immunotherapy, and Photo‐Activated Chemotherapy
Authors: Tang Dongsheng , Yu Yingjie , Zhang Jinbo , Dong Xiying , Liu Chaoyong , Xiao Haihua 
Published: July 2022

AbstractSemiconducting polymers (SP) hold great promise for cancer phototherapy due to their excellent optical properties; however, their clinical application is still hampered by their poor biodegradability. Herein, a self‐sacrificially biodegradable pseudo‐semiconducting polymer (PSP) for NIR‐II fluorescence bioimaging, photodynamic immunotherapy, and photoactivated chemotherapy (PACT) is reported. The PSP can further co‐assemble with an amphiphilic polyester with pendant doxorubicin (DOX) in its side chains via reactive oxygen species (ROS)‐responsive thioketal linkages (PEDOX), which are denoted as NP@PEDOX/PSP. The NP@PEDOX/PSP can accumulate at tumor sites and generate ROS for photodynamic immunotherapy as well as near‐infrared‐II fluorescence (NIR‐II) for bioimaging upon irradition at 808 nm. The ROS could break up thioketal linkages in PEDOX, resulting in rapid doxorubicin (DOX) release for PACT. Finally, both PEDOX and PSP are degraded sacrificially by intracellular glutathione (GSH), resulting in the dissociation of NP@PEDOX/PSP. This work highlights the application of self‐sacrificially degradable PSP for NIR‐II fluorescence bioimaging, photodynamic immunotherapy, and PACT in cancer therapy.
FeNi@N‐Doped Graphene Core–Shell Nanoparticles on Carbon Matrix Coupled with MoS2 Nanosheets as a Competent Electrocatalyst for Efficient Hydrogen Evolution Reaction
Authors: Shah Sayyar Ali , Xu Li , Sayyar Rani , Khan Iltaf , Yuan Aihua , Shen Xiaoping , Li Xiaohong , Ullah Habib 
Published: July 2022

AbstractSynthesis of noble‐metal‐free electrocatalysts for green hydrogen production is crucial to overcoming the energy demand of modern society. One of the most competitive and alternative noble‐metal‐free electrocatalysts for hydrogen evolution reaction (HER) is molybdenum disulfide (MoS2)‐based composites. Herein, it is shown that MoS2 nanosheets grow on FeNi@N‐doped graphene nanoparticles/N‐doped carbon matrix (FeNi@NG/NCM@MoS2), using the hydrothermal method. FeNi@NG/NCM@MoS2 hybrid displays outstanding HER performance with a low overpotential of 79 mV at 10 mA cm−2, a small Tafel slope of 40.2 mV dec−1, and high durability. First‐principles density functional theory simulations confirm the electron transformation from FeNi alloy to NG surface of FeNi@NG particle and subsequently further transfer to MoS2 nanosheets, which decrease the Gibbs free energy (ΔGH* ≈ −0.08 eV) and local work function for enhanced HER activities. This work highlights the understanding of electron transfer in demonstrating the kinetic reaction of the HER process and offers a new avenue for constructing efficient MoS2‐based electrocatalysts.
Robust Deposition of Sub‐Millimeter WSe2 Drive Ultrasensitive Gate‐Tunable 2D Material Photodetectors
Authors: Yang Mengmeng , Luo Zhongtong , Gao Wei , Zhang Menglong , Huang Le , Zhao Yu , Yao Jiandong , Wu Fugen , Li Jingbo , Zheng Zhaoqiang 
Published: July 2022

Abstract2D semiconductors are regarded as the potential channel materials for high‐performance integrated optoelectronics. However, the absence of an effective photoconductive gain mechanism and the adverse effects from traditional SiO2 substrate prevent the further breakthrough of the photosensitivity of 2D semiconductors‐based photodetectors. Here, an ingenious out‐of‐plane heterostructure is proposed for boosting the photosensitivity. Sub‐millimeter scale (>700 µm) tri‐layer WSe2 with high quality and uniformity is robustly deposited and integrated with 2D photosensitive channels for gate‐tunable photodetection. The WSe2 with naturally passivated surface can not only serve as a substrate passivation layer to mitigate the detrimental substrate effects, but also introduces vertical built‐in fields, which efficiently separates the photogenerated carriers and produces high photoconductive gain. Under gate voltage modulation, the proposed InSe photodetector exhibits a series of excellent performances, including responsivity of 112 A W−1, detectivity of 8.6 × 1012 Jones, light on/off ratio of 1.3 × 104 and rise/decay time of 29.1/15.3 ms. More inspiringly, this heterostructure scheme is universally applicable to 2D WS2 photodetector and also significantly improves its photosensitivity, demonstrating broad applicability. This research will provide helpful guidance for the design and optimization of customizable optoelectronic devices based on 2D semiconductors.
Triangular Micro‐Grating via Femtosecond Laser Direct Writing toward High‐Performance Polarization‐Sensitive Perovskite Photodetectors
Authors: Tian Xiaoyu , Wang Ruonan , Xu Yalun , Lin Qianqian , Cao Qiang 
Published: July 2022

AbstractThanks to attractive properties, such as defect tolerance, broad bandgap tunability, high quantum yields, and large absorption coefficient, perovskites have emerged as a star material in the past decade. Meanwhile, optical nano/microstructures made of perovskites offer a facile and efficient strategy to improve light‐harvesting performance and sensitivity of polarization. However, there is no low‐cost, high‐accuracy, and reproducibility technique for large‐scale fabrication of perovskite nano/microstructures. Here, femtosecond laser direct writing technique is introduced to fabricate FAPbI3 perovskite micro‐grating. Based on precise spatial and power control of femtosecond laser, micro‐grating with different structure parameters (period and depth) can be processed and investigated. Triangular micro‐grating of perovskite exhibits excellent emission properties (up to 67 times enhancement) owing to low reflectance and high absorption intensity. Strikingly, the outstanding performance of perovskite triangle grating photodetectors is obtained. The responsivity and detectivity reach 11.7 A W−1 and 7.8 × 1012 Jones, which are ≈3 and 12 times larger than the control devices; they also exhibit lower noise and decent polarization sensitivity. Taking the advantages of low cost, high accuracy, and reproducibility, the femtosecond laser direct writing technique endows perovskite materials with micro‐photonic concept and remarkably enhances the devices’ performance.
A Sphingolipid Fatty Acid Constituent Made by Alkyne trans‐Hydrogenation: Total Synthesis of Symbioramide
Authors: Radkowski Karin , Fürstner Alois 
Published: July 2022

AbstractA scalable approach to (2R)‐hydroxyoctadec‐3‐enoic acid ((−)‐2) is reported, which is the fatty acid constituent of numerous sphingolipids of biological significance. Key to success was the chemoselective trans‐hydrogenation of a functionalized propargylic alcohol precursor with [Cp*RuCl]4 as the catalyst, followed by lipase‐catalyzed resolution of the racemic product. (−)‐2 then served the shortest total synthesis of the marine natural product symbioramide known to date.magnified image
Cobalt‐Catalyzed Selective Transformation of Levulinic Acid and Amines into Pyrrolidines and Pyrrolidinones using Hydrogen
Authors: Pan Yixiao , Luo Zhenli , Yang Ji , Han Jiahong , Yang Jianbo , Yao Zhen , Xu Lijin , Wang Peng , Shi Qian 
Published: July 2022

AbstractCobalt‐catalyzed selective transformation of levulinic acid and primary amines into pyrrolidines and pyrrolidinones under H2has been developed. The catalyst system consisting of Co(NTf2)2, 1,1,1‐tris(di(4‐methoxyphenyl)phosphinomethyl) ethane ((p‐anisyl)triphos) and Me3SiOTf works well for the synthesis of pyrrolidines via reductive amination/cyclization/deoxygenative reduction of amide, and using Co(NTf2)2/1,1,1‐tris(diphenylphosphinomethyl) ethane (triphos) as the catalyst under reduced hydrogen pressure results in exclusive formation of pyrrolidinones. Both aryl and alkyl primary amines are suitable substrates, and a variety of functional groups are tolerated. Meanwhile, 4‐oxo‐4‐arylbutanoic acids, 5‐oxohexanoic acid, 6‐oxoheptanoic acid, 2‐formylbenzoic acid, 2‐acetylbenzoic acid and 2′‐acetyl‐[1,1′‐biphenyl]‐2‐carboxylic acid are also applicable, allowing for convenient access to cyclic amines and lactams with different ring size.magnified image
Efficient and Durable Sodium, Chloride‐doped Iron Oxide‐Hydroxide Nanohybrid‐Promoted Capacitive Deionization of Saline Water via Synergetic Pseudocapacitive Process
Authors: Zhao Jingxuan , Wu Bingyao , Huang Xinwei , Sun Yang , Zhao Zhibo , Ye Meidan , Wen Xiaoru 
Published: July 2022

AbstractRecently, the rational design and development of efficient faradaic deionization electrodes with high theoretical capacitance, natural abundance, and attractive conductivity have shown great promise for outstanding capacitive deionization (CDI)‐based desalination applications. Herein, the construction of novel FeOOH hybrid heterostructures with Na and Cl dopants (e.g., Na‐FeOOH and Cl‐FeOOH) via a robust hydrothermal strategy is reported, and an asymmetric CDI cell (Na‐FeOOH//Cl‐FeOOH) comprising Na‐FeOOH and Cl‐FeOOH working as the cathode and anode, respectively, is assembled. The multiple coupling effects of the specific structural features (e.g., enriched porosity, hierarchical pore alignment, and highly open crystalline framework), enhanced electrochemical conductivity, and optimized ion‐transfer property endow the FeOOH hybrid electrode with improved electrochemical performance. Impressively, the Na‐FeOOH//Cl‐FeOOH cell demonstrates a superior salt adsorption capacity (SACNaCl) of 35.12 mg g−1 in a 500 mg L−1 NaCl solution, a faster removal rate, and remarkable cycling stability. Moreover, the pseudocapacitive removal mechanism from the synergetic contribution of the Na‐FeOOH cathode and Cl‐FeOOH anode account for the significant desalination promotion of the Na‐FeOOH//Cl‐FeOOH cell.
Achieving purely organic room temperature phosphorescence in aqueous solution
Authors: Sun Hao , Zhu Liangliang 
Published: July 2022

AbstractPurely organic room temperature phosphorescence (RTP) materials have aroused increasing interests in recent years and have been widely applied in anti‐counterfeiting, biological imaging, sensing, etc. Currently, these materials can be efficiently developed in crystalline states and amorphous polymer‐doped systems. However, achieving organic RTP in solution, especially in water solution, is still a formidable challenge. Recently, reports on aqueous phase RTP have been increasing and some feasible design strategies have been proposed; however, related investigations are still limited and there is a lack of systematic reviews. Therefore, we summarized the recent cases of aqueous phase organic RTP emission with primarily focusing on the RTP properties and efficient design strategies (e.g., forming nanoparticles from phosphorescent molecules and macrocyclic supramolecular assembly). Moreover, promising applications of the aqueous phase organic RTP emission in bio‐imaging and sensing were discussed. Some detailed perspectives concerning materials design and application were provided with the hope to provide inspiration for the future development of aqueous phase organic RTP.
Whither chemical engineering?
Authors: Ramkrishna Doraiswami , Braatz Richard D. 
Published: July 2022

AbstractThe 1988 Amundson Report on research needs in chemical engineering encouraged the pursuit of frontier areas in chemical engineering with the warning, however, that attention to core areas must be preserved. Indeed, the strong core base in chemical engineering during the latter half of the 20th century enabled chemical engineers to contribute extensively to many areas outside of the traditional. The depth of such involvement has led researchers to confront questions much more engaging to the field of application. This effort has led to adopting and cultivating expertise more native to the field of application than to secure chemical engineering as a discipline. It therefore seems appropriate to ask if the warning voiced in the Amundson Report needs to be reiterated. If chemical engineering research must leave a strong trail of fundamental understanding through developed methodologies to ensure continuing progress, then this article yields considerable scope for discussion.
Comparative analytical performance of multiple plasma Aβ42 and Aβ40 assays and their ability to predict positron emission tomography amyloid positivity
Authors: Zicha Stephen , Bateman Randall J. , Shaw Leslie M. , Zetterberg Henrik , Bannon Anthony W. , Horton Wesley A. , Baratta Mike , Kolb Hartmuth C. , Dobler Iwona , Mordashova Yulia , Saad Ziad S. , Raunig David L. , Spanakis Emmanouil (Manos) , Li Yan , Schindler Suzanne E. , Ferber Kyle , Rubel Carrie E. , Martone Robert L. , Weber Christopher J. , Edelmayer Rebecca M. , Meyers Emily A. , Bollinger James G. , Rosenbaugh Erin G. , Potter William Z. ,   Alzheimer's Disease Neuroimaging Initiative (ADNI),   Foundation for the National Institutes of Health (FNIH) Biomarkers Consortium Plasma Aβ as a Predictor of Amyloid Positivity in Alzheimer's Disease Project Team
Published: July 2022

AbstractIntroductionThis report details the approach taken to providing a dataset allowing for analyses on the performance of recently developed assays of amyloid beta (Aβ) peptides in plasma and the extent to which they improve the prediction of amyloid positivity.MethodsAlzheimer's Disease Neuroimaging Initiative plasma samples with corresponding amyloid positron emission tomography (PET) data were run on six plasma Aβ assays. Statistical tests were performed to determine whether the plasma Aβ measures significantly improved the area under the receiver operating characteristic curve for predicting amyloid PET status compared to age and apolipoprotein E (APOE) genotype.ResultsThe age and APOE genotype model predicted amyloid status with an area under the curve (AUC) of 0.75. Three assays improved AUCs to 0.81, 0.81, and 0.84 (P < .05, uncorrected for multiple comparisons).DiscussionMeasurement of Aβ in plasma contributes to addressing the amyloid component of the ATN (amyloid/tau/neurodegeneration) framework and could be a first step before or in place of a PET or cerebrospinal fluid screening study.Highlights
The Foundation of the National Institutes of Health Biomarkers Consortium evaluated six plasma amyloid beta (Aβ) assays using Alzheimer's Disease Neuroimaging Initiative samples.
Three assays improved prediction of amyloid status over age and apolipoprotein E (APOE) genotype.
Plasma Aβ42/40 predicted amyloid positron emission tomography status better than Aβ42 or Aβ40 alone.