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ti_(3)C_(2)t_(x)/SnO_(2)P–N heterostructure construction boosts room-t.m.erature detecting formaldehyde

Rare metals 2024年第1期43卷 267-279页

作者： yue Zhang ming-yue Wang Xiao-Guang San Yan-Bai Shen Guo-Sheng Wang Lei Zhang Dan meng College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142China Institute for Superconducting and Electronic materials(ISEm) Australian Institute for Innovative Materials(AIIM)University ofWollongongWollongongNSW2500Australia College of Resources and Civil Engineering Northeastern UniversityShenyang 110819China

Formaldehyde is a common atmospheric pollutant produced in industrial production and daily ***,the traditional semiconductor formaldehyde gas sensor cannot work at room t.m.erature,which limits its practical ***,developing high-performance gas sensors for rapidly and accurately detecting formaldehyde at room t.m.erature is an important *** this study,ti_(3)C_(2)tx/SnO_(2)heterostructures were constructed,which could selectively detect formaldehyde at room t.m.erature with a response value of 29.16%(10×10^(-6)).In addition,the sensor shows a remarkable theoretical detection limit of 5.09×10^(-9)and good longterm *** functional theory(DFt)simulations reveal that SnO_(2)nano spheres provide the majority of adsorption sites that strongly interact with ***,ti_(3)C_(2)t_(x)acting as a conductive layer facilitates the transfer of charge carriers so that they show a sensing response to formaldehyde at room ***,the formation of p-n heterostructures between SnO_(2)and ti_(3)C_(2)t_(x)boosts the Schottky barrier at the interface,which is the critical factor in enhancing the sensing properties by turning the Schottky barrier upon introducing formaldehyde *** perspective is expected to provide instructive guidance for utilizing mXene/metal oxide nanocomposites to improve the gas sensing performance at room t.m.erature.

关键词： ti_(3)C_(2)t_(x)/SnO_(2)nanocomposites p-n heterostructures Formaldehyde sensing Room t.m.erature DFt calculations

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Natural products inspired[3+2]cycloaddition enables efficient construction of hydroxylated tetrahydrofuran acetals and concise syntheses of lignans

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Science China Chemistry 2024年第7期67卷 2306-2313页

作者： Dong-yue Cai Weiming Shi Zhao-Hui Jin Zhi-Xiang Yu Jin-Xin Zhao Jian-min yue State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China University of Chinese Academy of Sciences Beijing 100049China Beijing National Laboratory for molecular Sciences(BNLmS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking UniversityBeijing 100871China

mimicking biosynthetic pathways of hongkonoids led to the development of a new Cu(Ⅰ)-catalyzed[3+2]cycloaddition ofα-hydroxyketone andβ-keto enol ethers,affording tetrahydrofuran acetals in a highly diastereoselective manner and 100%at.m.*** studies on the mechanism disclosed a concerted but asynchronous michael addition/aldol *** the same importance,this methodology provides a practical biomimetic approach for one-step construction of the dibenzylbutyrolactol lignan backbone starting from two phenyl propane derivatives,opening up a powerful new approach for lignan synthesis,which is showcased by succinct total syntheses of two biologically important aryltetralin-type lignans,β-apopicropodophyllin and *** the mild and operationally simple conditions,the developed chemistry might have a promising prospect in potential industrial applications.

关键词： [3+2]cycloaddition transition-metal catalysis tetrahydrofuran lignans natural products

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Progress,implications,and challenges in using humanized immune syst.m.mice in CAR-t therapy-Application evaluation and improvement

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Animal models and Experimental medicine 2024年第1期7卷 3-11页

作者： Hanwei yue Lin Bai NHC Key Laboratory of Human Disease Comparative medicine Institute of Laboratory Animal SciencesCAMS and PUMCChao-yang DistrictBeijingChina

In recent years,humanized immune syst.m.HIS)mice have been gradually used as models for preclinical research in pharmacotherapies and cell therapies with major breakthroughs in t.m.r and other fields,better mimicking the human immune syst.m.and the t.m.r immune microenvironment,compared to traditional immunodeficient *** better promote the application of HIS mice in preclinical research,we se-lectively summarize the current prevalent and breakthrough research and evaluation of chimeric antigen receptor(CAR)-t cells in various antiviral and antit.m.r *** exploring its application in preclinical research,we find that it can better reflect the actual clinical patient condition,with the advantages of providing high-efficiency detection indicators,even for progressive research and *** believe that it has better clinical patient simulation and promotion for the updated design of CAR-t cell therapy than directly transplanted immunodeficient *** characteristics of the main models are proposed to improve the use defects of the existing models by reducing the limitation of antihost reaction,combining multiple models,and unifying sources and organoid *** study of relapse and toxicity after CAR-t treatment also provides more possibilities for application and development.

关键词： antit.m.r antiviral CAR-t humanized immune syst.m.model humanized mice preclinical research

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QCD sum rule study of J^(P)=1^(±)exotic states with two heavy quarks in the molecular picture

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Chinese Physics C 2024年第6期48卷 31-37页

作者： t.m.Aliev S.Bilmis m.Savcı Department of Physics Middle East Technical UniversityAnkara06800Turkey tUBItAK ULAKBIm Ankara06510Turkey

In this study,the spectroscopic parameters of exotic molecular states composed of mesons containing two heavy quarks(scalar-axial and pseudoscalar-axial meson combinations)are investigated within the QCD sum *** findings reveal that.m.lecular states containing charm quarks do not form bound states,whereas states with b-quarks can form exotic molecular *** observation has significant implications for understanding the structure of these exotic states.

关键词： QCD sum rules exotic mesons molecular states

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Analysis of strong decays of SU(3)partners ofΩ(2012)baryon

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Chinese Physics C 2024年第8期48卷 34-41页

作者： t.m.Aliev S.Bilmis m.Savci Department of Physics Middle East Technical UniversityAnkara 06800Turkey tUBItAK ULAKBIm Ankara 06510Turkey

We est.m.te the coupling constants and decay widths of the SU(3)partners of theΩ(2012)hyperon,as discovered by the BELLE Collaboration,using the distribution amplitudes of the octet baryons within the light cone sum rules *** study includes a comparison of the obtained results for the relevant decay widths with those derived within the framework of the flavor SU(3)*** observe a good agreement between the predictions of both ***,our result on the decay width ofΩ→ΞK is compatible with the existing experimental result within the uncertainties of the model *** results can provide helpful insights for determining the nature of the SU(3)partners of theΩ(2012)baryon.

关键词： coupling constants light cone sum rule hyperon

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Natural marmatite photocatalyst for treatment of mineral processing wastewater to help zero wastewater discharge

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Journal of Environmental Sciences 2024年第8期142卷 83-91页

作者： meirong Wu Wei Sun Xiangsong meng Jianhua Kang yue Yang School of minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing mineral Resources Central South UniversityChangsha 410083China

mineral processing wastewater(mPW)with large discharge and high toxicity affects environmental safety,and the realizing zero discharge of mPW is of great significance for reducing environmental pollution,saving water resources,and promoting the sustainable development of the mining *** this study,we reported natural marmatite(Nm)as a low-cost and efficient photocatalyst for the treatment of mPW to help zero wastewater *** photocatalytic activity of Nm was evaluated by the removal of total organic carbon(tOC)from mPW under visible-light illumination,and the opt.m.l degradation conditions were *** showed that superoxide free radicals(^(·)O_(2)^(-))were the dominant active species responsible for organic pollutants degradation,and 74.25%tOC removal was obtained after 120 min reaction under the opt.m.m treatment ***,the wastewater treated by Nm photocatalysis can be reused in the flotation syst.m.without adverse impact on the product *** on these findings,a model of zero wastewater discharge for flotation with the help of photocatalytic treatment was established,it indicated that the water of the whole syst.m.can be balanced without affecting the ore dressing index,which showed that visible light-driven photocatalyst has a promising application prospect in the treatment and recycling of industrial wastewater.

关键词： Natural mineral Photocatalysis Industrial wastewater Wastewater recycling Water balance

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Structure and immunomodulatory activity of Lentinus edodes polysaccharides modified by probiotic fermentation

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Food Science and Human Wellness 2024年第1期13卷 421-433页

作者： Jingjing Liang meina Zhang Xiaohan Li Yuan yue Xiaowei Wang mengzhen Han tianli yue Zhouli Wang Zhenpeng Gao College of Food Science and Engineering Northwest A&F UniversityYangling 712100China Xi'an GaoXin No.1 High School Xi'an 710065China

Plant-based fermentations provide an untapped source for novel biotechnological *** this study,a probiotic named Lactobacillus ferment.m.21828 was introduced to ferment Lentinus *** were extracted from fermented and non-fermented *** and purified via DEAE-52 and Sephadex *** components designated F-LEP-2a and NF-LEP-2a were analyzed by Ft-IR,HPGPC,HPAEC,SEm,GC-mS and *** results revealed that probiotic fermentation increased the molecular weight from 1.16×10^(4) Da to 1.87×10^(4) Da and altered the proportions of glucose,galactose and mannose,in which glucose increased from 45.94%to 48.16%.methylation analysis and NmR spectra indicated that F-LEP-2a and NF-LEP-2a had similar linkage ***,their immunomodulatory activities were evaluated with immunosuppressive ***-LEP and F-LEP improved immune organ indices,immunoglobulin(Ig G and Ig m)and cytokines concentrations;restored the antioxidation capacity of liver;and maintained the balance of gut.m.crobiota.F-LEP displayed better moderating effects on the spleen index,immunoglobulin,cytokines and the diversity of gut.m.crobiota than NF-LEP(200,400 mg/kg).Our study provides an efficient and environment-friendly way for the structural modification of polysaccharides,which helps to enhance their biological activity and promote their wide application in food,medicine and other fields.

关键词： Lentinus edodes polysaccharide Lactobacillus ferment.m.fermentation Structural analysis Immunoregulatory activity Nuclear magnetic resonance

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An unusual cause of myocardial infarction in an elderly man

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Journal of Geriatric Cardiology 2024年第8期21卷 826-827页

作者： Shing Ching Chiu Sun yue Division of Cardiology Department of Medicine and GeriatricsUnited Christian HospitalHong KongChina

Cardiac involvement in eosinophilic granulomatosis with polyangiitis (EPGA) is increasingly recognized,but it is unusual to be the initial *** report a case of vasculitic myocardial infarction (mI) and cardiogenic shock in an elderly man caused by EPGA.A 73-year-old man presented with acute chest pain radiating to back for two *** has a history of ast.m. and allergic rhinitis for more than ten years well controlled by inhaled *** electrocardiogram showed sinus rhyt.m.right bundle-branch block and anterolateral St-segment *** had elevated troponin t of 548 ng/L (reference:tine kinase of 454 IU/L (reference:39–308 IU/L)。

关键词： infarction involvement elevated

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Hybrid pedestrian positioning syst.m.using wearable inertial sensors and ultrasonic ranging

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Defence technology（防务技术） 2024年第3期33卷 327-338页

作者： Lin Qi Yu Liu Chuanshun Gao tao Feng yue Yu School of Communication and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic UniversityHong Kong 999077China

Pedestrian positioning syst.m.PPS)using wearable inertial sensors has wide applications towards various emerging fields such as smart healthcare,emergency rescue,soldier positioning,*** performance of traditional PPS is limited by the cumulative error of inertial sensors,complex motion modes of pedestrians,and the low robustness of the multi-sensor collaboration *** paper presents a hybrid pedestrian positioning syst.m.using the combination of wearable inertial sensors and ultrasonic ranging(H-PPS).A robust two nodes integration structure is developed to adaptively combine the motion data acquired from the single waist.m.unted and foot.m.unted node,and enhanced by a novel ellipsoid constraint *** addition,a deep-learning-based walking speed est.m.tor is proposed by considering all the motion features provided by different nodes,which effectively reduces the cumulative error originating from inertial ***,a comprehensive data and model dual-driven model is presented to effectively combine the motion data provided by different sensor nodes and walking speed est.m.tor,and multi-level constraints are extracted to further improve the performance of the overall *** results indicate that the proposed H-PPS significantly improves the performance of the single PPS and outperforms existing algorit.m. in accuracy index under complex indoor scenarios.

关键词： Pedestrian positioning system Wearable inertial sensors Ultrasonic ranging Deep-learning Data and model dual-driven

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Cortical Organoid-on-a-Chip with Physiological Hypoxia for Investigating tanshinone IIA-Induced Neural Differentiation

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Research 2024年第3期2023卷 457-468页

作者： yue Zhi Yujuan Zhu Jinglin Wang Junqi Zhao Yuanjin Zhao Department of Rheumatology and Immunology Nanjing Drum Tower HospitalClinical Medical College of Traditional Chinese and Western MedicineNanjing University of Chinese MedicineNanjing210023China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China Shenzhen Research Institute Southeast UniversityShenzhen518038China

Cortical organoids represent cutting-edge models for mimic human brain development during the early and even middle stage of pregnancy, while they often fail to recreate the complex microenvironmental factors, such as physiological hypoxia. Herein, to recapitulate fetal brain development, we propose a novel cortical organoid-on-a-chip with physiological hypoxia and further explore the effects of tanshinone IIA (tan IIA) in neural differentiation. the microfluidic chip was designed with a micropillar array for the controlled and efficient generation of cortical organoids. With low oxygen, the generated cortical organoids could recapitulate key aspects of early-gestational human brain development. Compared to organoids in normoxic culturing condition, the promoted neurogenesis, synaptogenesis and neuronal maturation were observed in the present.m.crosyst.m. suggesting the significance of physiological hypoxia in cortical development. Based on this model, we have found that Chinese herbal drug tan IIA could promote neural differentiation and maturation, indicating its potential therapeutic effects on neurodevelopmental disorders as well as congenital neuropsychiatric diseases. these results indicate that the proposed biomimetic cortical organoid-on-a-chip model with physiological hypoxia can offer a promising platform to simulate prenatal environment, explore brain development, and screen natural neuroactive components.

关键词： promoted herbal cutting

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