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An efficient Boron Source Activation Strategy for the Low‑Temperature Synthesis of Boron Nitride Nanotubes

Nano-Micro Letters 2025年第1期17卷 548-558页

作者： Ying Wang Kai Zhang Liping Ding Liyun Wu Songfeng e Qian He Nanyang Wang Hui Zuo Zhengyang Zhou Feng Ding Yue Hu Jin Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materialsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093People’s Republic of China School of electronic Information and Artificial Intelligence Shaanxi University of Science&TechnologyXian 710000People’s Republic of China College of Bioresources Chemical and Materials engineering Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325000People’s Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518000People’s Republic of China College of Chemical and Molecular engineering Peking UniversityBeijing 100871People’s Republic of China

Lowering the synthesis temperature of boron nitride nanotubes(BNNTs)is crucial for their *** primary reason for adopting a high temperature is to enable the effective activation of highmelting-point solid *** this study,we developed a novel approach for efficiently activating boron by introducing alkali metal compounds into the conventional MgO–B *** approach can be adopted to form various low-melting-point AM–Mg–B–O growth *** growth systems have improved catalytic capability and reactivity even under low-temperature conditions,facilitating the synthesis of BNNTs at temperatures as low as 850℃.In addition,molecular dynamics simulations based on density functional theory theoretically demonstrate that the systems maintain a liquid state at low temperatures and interact with N atoms to form BN *** findings offer novel insights into the design of boron activation and are expected to facilitate research on the low-temperature synthesis of BNNTs.

关键词： Boron nitride nanotubes Low-temperature Boron activation Density functional theory

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Conversion of Solar energy to Fuels by Inorganic Heterogeneous Systems

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催化学报 2011年第6期32卷 879-890页

作者： Kimfung LI david MARTIN Department of Chemical engineering University College LondonTorrington PlaceLondonWC1E 7JEUK

Over the last several years,the need to find clean and renewable energy sources has increased rapidly because current fossil fuels will not only eventually be depleted,but their continuous combustion leads to a dramatic increase in the carbon dioxide amount in *** of the Sun's radiation can provide a solution to both *** fuel can be generated by using solar energy to split water,and liquid fuels can be produced via direct CO2 *** would create an essentially free carbon or at least carbon neutral energy *** this tutorial review,the current progress in fuels' generation directly driven by solar energy is *** mechanisms are discussed with suggestions for future research.

关键词：固体超强碱氧化钙硝酸钾氧化铝氧化锆氢氧化钾硝酸钙

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Cytoplasmic dynein-2： from molecules to human diseases

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Frontiers in Biology 2013年第1期8卷 119-126页

作者： Vidyalakshmi RAJAGOPALAN Jonathan P. D'AMICO david e. WILKeS Department of Biological Sciences Indiana University South Bend South Bend IN 46634-7111 USA

The dynein motor protein family is involved in a wide variety of functions in eukaryotic cells. The axonemal dynein class and cytoplasmic dynein-1 subclass have been well characterized. However, the cytoplasmic dynein-2 subclass of the family has only recently begun to be understood. We describe the entire dynein family but focus on cytoplasmic dynein-2. Dynein-2 consists of a heavy, an intermediate, a light intermediate, and a light chain. The complex appears to function primarily as the retrograde motor for intraflagellar transport. This process is important for the formation and maintenance of cilia and flagella. Additionally, dynein-2 has roles in the control of ciliary length and in non-ciliary functions. Mutations in the human dynein-2 heavy chain lead to cilia-related diseases.

关键词： cilia dynein flagella intraflagellar transport microtubule

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Finding your scientific story by writing backwards

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Marine Life Science & Technology 2022年第1期4卷 1-9页

作者： david J.S.Montagnes e.Ian Montagnes Zhou Yang Department of evolution Ecologyand BehaviourUniversity of LiverpoolBioSciences BuildingLiverpoolL697ZBUK Private Office 31 Baldwin StreetPort HopeONL1A 1S3Canada School of Biological Sciences Nanjing Normal UniversityNanjing210023China

To succeed,a scientist must write *** guidance exists on writing papers that follow the classic Introduction,Methods,Results,and Discussion(IMRaD)***,we fill a critical gap in this pedagogical *** offer guidance on developing a good scientific *** valuable—yet often poorly achieved—skill can increase the impact of a study and its likelihood of acceptance.A scientific story goes beyond presenting *** is a cohesive narrative that engages the reader by presenting and solving a problem,with a beginning,middle,and *** create this narrative structure,we urge writers to consider starting at the end of their study,starting with writing their main conclusions,which provide the basis of the Discussion,and then work backwards:Results→Methods→refine the Discussion→Introduction→Abstract→*** this brief and informal editorial,we offer guidance to a wide audience,ranging from upper-level undergraduates(who have just conducted their first research project)to senior scientists(who may benefit from re-thinking their approach to writing).To do so,we provide specific instruction,examples,and a guide to the literature on how to“write backwards”,linking scientific storytelling to the IMRaD structure.

关键词： Scientific narrative Scientific pedagogy Scientific writing Story-telling Writing structure

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Hepatic manifestations of non-steroidal inflammatory bowel disease therapy

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World Journal of Hepatology 2015年第27期7卷 2716-2728页

作者： Robert Hirten Keith Sultan Ashby Thomas david e Bernstein Division of Gastroenterology North Shore University Hospital--Long Island Jewish Medical Center

Inflammatory bowel disease(IBD) is composed of Crohn's disease and ulcerative colitis and is manifested by both bowel-related and extraintestinal manifestations. Recently the number of therapeutic options available to treat IBD has dramatically increased, with each new medication having its own mechanism of action and side effect profile. A complete understanding of the hepatotoxicity of these medications is important in order to distinguish these complications from the hepatic manifestations of IBD. This review seeks to evaluate the hepatobiliary complications of non-steroid based IBD medications and aide providers in the recognition and management of these side-effects.

关键词： Hepatotoxicity Adverse drug reactions Drug induced

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PRISMS-Fatigue computational framework for fatigue analysis in polycrystalline metals and alloys

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npj Computational Materials 2021年第1期7卷 349-360页

作者： Mohammadreza Yaghoobi Krzysztof S.Stopka Aaditya Lakshmanan Veera Sundararaghavan John e.Allison david L.McDowell Materials Science and engineering University of MichiganAnn ArborMIUSA Woodruff School of Mechanical engineering Georgia Institute of TechnologyAtlantaGAUSA Aerospace engineering University of MichiganAnn ArborMIUSA School of Materials Science and engineering Georgia Institute of TechnologyAtlantaGAUSA

The PRISMS-Fatigue open-source framework for simulation-based analysis of microstructural influences on fatigue resistance for polycrystalline metals and alloys is presented *** framework uses the crystal plasticity finite element method as its microstructure analysis tool and provides a highly efficient,scalable,flexible,and easy-to-use ICMe community *** PRISMS-Fatigue framework is linked to different open-source software to instantiate microstructures,compute the material response,and assess fatigue indicator *** performance of PRISMS-Fatigue is benchmarked against a similar framework implemented using *** indicate that the multilevel parallelism scheme of PRISMS-Fatigue is more efficient and scalable than ABAQUS for large-scale fatigue *** performance and flexibility of this framework is demonstrated with various examples that assess the driving force for fatigue crack formation of microstructures with different crystallographic textures,grain morphologies,and grain numbers,and under different multiaxial strain states,strain magnitudes,and boundary conditions.

关键词： fatigue alloys grain

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effects of cowpea(Vigna unguiculata) root mucilage on microbial community response and capacity for phenanthrene remediation

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Journal of environmental Sciences 2015年第7期27卷 45-59页

作者： Ran Sun Richard W.Belcher Jianqiang Liang Li Wang Brian Thater david e.Crowley Gehong Wei State Key Laboratory of Crop Stress Biology in Arid Areas College of Life Sciences Northwest A&F University Department of environmental Sciences University of California at Riverside

Biodegradation of polycyclic aromatic hydrocarbons（PAHs） is normally limited by their low solubility and poor bioavailability. Prior research suggests that biosurfactants are synthesized as intermediates during the production of mucilage at the root tip. To date the effects of mucilage on PAH degradation and microbial community response have not been directly examined. To address this question, our research compared 3 cowpea breeding lines（Vigna unguiculata） that differed in mucilage production for their effects on phenanthrene（PHe） degradation in soil. The High Performance Liquid Chromatography results indicated that the highest PHe degradation rate was achieved in soils planted with mucilage producing cowpea line C1, inoculated with Bradyrhizobium, leading to 91.6% PHe disappearance in 5 weeks. In root printing tests, strings treated with mucilage and bacteria produced larger clearing zones than those produced on mucilage treated strings with no bacteria or bacteria inoculated strings. experiments with14C-PHe and purified mucilage in soil slurry confirmed that the root mucilage significantly enhanced PHe mineralization（82.7%）, which is 12% more than the control treatment without mucilage. The profiles of the PHe degraders generated by Denaturing gradient gel electrophoresis suggested that cowpea C1, producing a high amount of root mucilage, selectively enriched the PHe degrading bacteria population in rhizosphere. These findings indicate that root mucilage may play a significant role in enhancing PHe degradation and suggests that differences in mucilage production may be an important criterion for selection of the best plant species for use in phytoremediation of PAH contaminated soils.

关键词： Bioremediation Mucilage Phytoremediation PAH mineralization Rhizosphere

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Limited recovery following acellular nerve allograft reconstruction in major peripheral nerve injuries

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Plastic and Aesthetic Research 2023年第1期10卷 676-679页

作者： david Chi Anna Rose Johnson Susan e.Mackinnon Division of Plastic and Reconstructive Surgery Department of SurgeryWashington University School of MedicineSaint LouisMO 63110USA

Recent studies suggest that acellular nerve allografts(ANA)have similar efficacy as nerve autografts in certain applications of nerve ***,multiple studies also demonstrate the limitations of nerve allografts,resulting in poor patient *** submission discusses a recent case series of patients who failed allograft use with subsequent histologic analyses of these *** on the treatment of nerve gaps are presented,drawing from our current understanding of allograft and autograft utility in *** taken into account include recipient critical nerve function,existent nerve gap,and nerve diameter.

关键词： Nerve reconstruction peripheral nerve acellular nerve allograft nerve autograft

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Therapeutic potential of exercise-hormone irisin in Alzheimer's disease

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Neural Regeneration Research 2025年第6期20卷 1555-1564页

作者： eunhee Kim Rudolph eTanzi Se Hoon Choi Genetics and Aging Research Unit MassGeneral Institute for Neurodegenerative DiseaseDepartment of NeurologyMassachusetts General HospitalHarvard Medical SchoolCharlestownMAUSA McCance Center for Brain Health Massachusetts General HospitalBostonMAUSA

Irisin is a myokine that is generated by cleavage of the membrane protein fibronectin type Ⅲ domain-containing protein 5(FNDC5) in response to physical exercise. Studies reveal that irisin/FNDC5 has neuroprotective functions against Alzheimer's disease, the most common form of dementia in the elderly, by improving cognitive function and reducing amyloid-β and tau pathologies as well as neuroinflammation in cell culture or animal models of Alzheimer's disease. Although current and ongoing studies on irisin/FNDC5 show promising results, further mechanistic studies are required to clarify its potential as a meaningful therapeutic target for alleviating Alzheimer's disease. We recently found that irisin treatment reduces amyloid-β pathology by increasing the activity/levels of amyloid-β-degrading enzyme neprilysin secreted from astrocytes. Herein, we present an overview of irisin/FNDC5's protective roles and mechanisms against Alzheimer's disease.

关键词： Alzheimer's disease exercise fibronectin typeⅢdomain-containing protein 5(FNDC5) irisin

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Instance Segmentation of Characters Recognized in Palmyrene Aramaic Inscriptions

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Computer Modeling in engineering & Sciences 2024年第9期140卷 2869-2889页

作者： Adéla Hamplová Alexey Lyavdansky TomášNovák Ondrej Svojše david Franc Arnošt Veselý Czech University of Life Sciences in Prague(CULS) Faculty of Economics and ManagementDepartment of Information EngineeringPrague16500Czech Republic National Research University Higher School of economics(HSe) Faculty of HumanitiesInstitute for Oriental and Classical StudiesMoscow101000The Russian Federation

This study presents a single-class and multi-class instance segmentation approach applied to ancient Palmyrene inscriptions,employing two state-of-the-art deep learning algorithms,namely YOLOv8 and Roboflow *** goal is to contribute to the preservation and understanding of historical texts,showcasing the potential of modern deep learning methods in archaeological *** research culminates in several key findings and scientific *** comprehensively compare the performance of YOLOv8 and Roboflow 3.0 in the context of Palmyrene character segmentation—this comparative analysis mainly focuses on the strengths and weaknesses of each algorithm in this *** also created and annotated an extensive dataset of Palmyrene inscriptions,a crucial resource for further research in the *** dataset serves for training and evaluating the segmentation *** employ comparative evaluation metrics to quantitatively assess the segmentation results,ensuring the reliability and reproducibility of our findings and we present custom visualization tools for predicted segmentation *** study advances the state of the art in semi-automatic reading of Palmyrene inscriptions and establishes a benchmark for future *** availability of the Palmyrene dataset and the insights into algorithm performance contribute to the broader understanding of historical text analysis.

关键词： Optical character recognition instance segmentation Palmyrene ancient languages computer vision

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