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Point Cloud Classification Using Content-Based Transformer via Clustering in Feature Space

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 231-239页

作者： Yahui liu {1. Tian Yisheng Lv lingxi li Fei-Yue wang the State Key Laboratory for Management and Control of Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190 the School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100190 IEEE the Transportation and Autonomous Systems Institute(TASI)and the department of Electrical and Computer Engineering Purdue School of Engineering and TechnologyIndiana University-Purdue University Indianapolis(IUPUI)Indianapolis 46202 USA

Recently, there have been some attempts of Transformer in 3D point cloud classification. In order to reduce computations, most existing methods focus on local spatial attention,but ignore their content and fail to establish relationships between distant but relevant points. To overcome the limitation of local spatial attention, we propose a point content-based Transformer architecture, called PointConT for short. It exploits the locality of points in the feature space(content-based), which clusters the sampled points with similar features into the same class and computes the self-attention within each class, thus enabling an effective trade-off between capturing long-range dependencies and computational complexity. We further introduce an inception feature aggregator for point cloud classification, which uses parallel structures to aggregate high-frequency and low-frequency information in each branch separately. Extensive experiments show that our PointConT model achieves a remarkable performance on point cloud shape classification. Especially, our method exhibits 90.3% Top-1.accuracy on the hardest setting of ScanObjectN N. Source code of this paper is available at https://***/yahuiliu99/PointC onT.

关键词： Content-based Transformer deep learning feature aggregator local attention point cloud classification

Giant negative electrocaloric effect measured by indirect method in X-ray irradiated P(VDF-TrFE)films

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Journal of Materiomics 2024年第3期10卷 624-631页

作者： Bo li {1. Yang Hong Zhang Jiajia Zhang Qianjin wang Weishu liu department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenGuangdong 518055China Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and TechnologyShenzhenChina College of Physics and Electronic Information Yunnan Normal UniversityYunnan Kunming 650500China The Science and Technology on Reliability Physics and Application of Electronic Component Laboratory China Electronic Product Reliability and Environmental Testing Research InstituteGuangzhou 510610China

Flexible solid-state cooling devices with high efficiency are attracted to ferroelectric polymers with excellent negative electrocaloric(EC)*** is challenging to obtain a large negative EC effect in ferroelectric polymers due to the lack of tunable techniques.A giant negative EC response was obtained in the poly(vinylidene fluoride-trifluoroethylene)copolymers(P(VDF-TrFE),70/30,in mole ratio)irra-diated with high-energy *** irradiated P(VDF-TrFE)films showed an adiabatic temperature change of-1..5 K at 40 MV/m under a dose of 5 Mrad(1.Mrad=1.^(4) J/kg)obtained by the indirect *** significant negative EC effect is attributed to the enhancement of crystalline due to the entry of polymer molecules into the amorphous to crystalline structure and the reduction of heat ca-pacity due to the increase of *** addition,X-ray irradiation improves the dielectric coefficient from 1. to *** research indicates that irradiation can modify the negative EC properties of ferro-electric polymers for solid-state cooling.

关键词： Negative electrocaloric effects X-rays radiation P(VDF-TrFE)films

Importance of oxygen-containing functionalities and pore structures of biochar in catalyzing pyrolysis of homologous poplar

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Chinese Journal of Chemical Engineering 2024年第1期65卷 200-211页

作者： li Qiu Chao li Shu Zhang Shuang wang bin li Zhenhua Cui Yonggui Tang Obid Tursunov Xun Hu School of Material Science and Engineering University of JinanJinan 250022China Joint International Research Laboratory of Biomass Energy and Materials College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013China Shandong BASAN Graphite New Material Plant Zibo 255311China department of Power Supply and Renewable Energy Sources National Research University TIIAMETashkent 100000Uzbekistan

Biochar and bio-oil are produced simultaneously in one pyrolysis process,and they inevitably contact and may interact,influencing the composition of bio-oil and modifying the structure of *** this sense,biochar is an inherent catalyst for *** this study,in order to investigate the influence of functionalities and pore structures of biochar on its capability for catalyzing the conversion of homologous volatiles in bio-oil,three char catalysts(600C,800C,and 800AC)produced via pyrolysis of poplar wood at 600 or 800℃or activated at 800℃,were used for catalyzing pyrolysis of homologous poplar wood at 600℃,*** results indicated that the 600C catalyst was more active than 800C and 800AC for catalyzing cracking of volatiles to form more gas(yield increase by 40.2%)and aromatization of volatiles to form more light or heavy phenolics,due to its abundant oxygen-containing functionalities acting as active *** developed pores of the 800AC showed no such catalytic effect but could trap some volatiles and allow their further conversion via sufficient ***,the interaction with the volatiles consumed oxygen on 600C(decrease by 50%),enhancing the aromatic degree and increasing thermal *** dominance of deposition of carbonaceous material of a very aromatic nature over 800C and 800AC resulted in net weight gain and blocked micropores but formed additional *** in situ diffuse reflectance infrared Fourier transform spectroscopy characterization of the catalytic pyrolysis indicated superior activity of 600C for removal of -OH,while conversion of the intermediates bearing C=O was enhanced over all the char catalysts.

关键词： Poplar wood Catalytic pyrolysis Char catalyst Volatile-char interaction Bio-oil

DNA bridging of FOXP3 ladder-like multimer: Unveiling a novel transcriptional regulation paradigm

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The Innovation 2024年第3期5卷 15-16页

作者： Ying Lu Lanfang li Hanting Yang {1. li Zuoyun wang Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education Shanghai Xuhui Central Hospital and School of Basic Medical SciencesFudan UniversityShanghai 200032China Institute for Translational Brain Research State Key Laboratory of Medical NeurobiologyMOE Frontiers Center for Brain ScienceDepartment of NeurologyZhongshan HospitalFudan UniversityShanghai 200032China Center for Immune-Related Diseases at Shanghai Institute of Immunology Department of Immunology and MicrobiologyShanghai Jiao Tong University School of MedicineShanghai 200025China

In the latest issue of Nature,Zhang et *** a novel ladder-like structure of FOXP3-DNA interaction involving FOXP3 multimerization and remote DNA bridging through a com{1.ation of biochemistry,structural biology,cell biology,and bioinformatics analyses.1.In this commentary,we highlight their key findings and provide our insights into the research paradigm for further exploration of a novel transcriptional regulation mode as well as a therapeutic strategy from the structural aspects of the FOXP3 complex(Figure 1..

关键词： FOXP3 bridging

Long-wave infrared emission properties of strain-balanced InAs/In_(x)Ga_(1.x)As_(y)Sb_(1.y)type-Ⅱsuperlattice on different substrates

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Rare Metals 2024年第7期43卷 3194-3204页

作者： Chao Shi Xuan Fang Hong-bin Zhao Deng-Kui {1. Xi Chen Dan Fang Dong-Bo {1. Xiao-Hua {1. Jin-Hua li State Key Laboratory of High Power Semiconductor Lasers School of PhysicsChangchun University of Science and TechnologyChangchun 130022China State Key Laboratory of Advanced Materials for Smart Sensing China General Research Institute for Nonferrous MetalsBeijing 100088China department of Opto-Electronic Information Science School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China

High-performance type-Ⅱsuperlattices ofⅢ-Ⅴsemiconductor materials play an important role in the development and application of infrared optoelectronic *** the quality of epitaxial materials and clarifying the luminescent mechanism are of great significance for practic al applic *** this work,strain-balanced and high-quality In As/In_(x)Ga_(1.x)As_(y)Sb_(1.y)superlattices without lattice mismatch were achieved on InAs and GaSb substrates *** grown on In As substrate could exhibit higher crystal quality and surface flatness based on high-resolution X-ray diffraction(HRXRD)and atomic force microscopy(AFM)measurements'***,the strain distribution phenomenon from geometric phase analysis indicates that fluctuations of alloy compositions in superlattices on GaSb substrate are more *** addition,the optical properties of superlattices grown on different substrates are discussed *** of the difference in fluctuations of element composition and interface roughness of superlattices on different substrates,the superlattices grown on In As substrate would have higher integral intensity and narrower full-width at half maximum of long-wave infrared ***,the thermal quenching of emission intensity indicates that the superlattices grown on the In As substrate have better recombination ability,which is beneficial for increasing the operating temperature of infrared optoelectronic devices based on this type of superlattices.

关键词： Photoluminescence Alloy compositions fluctuations InAs(Sb)/In_(x)Ga_(1.x)As_(y)Sb_(1.y) Type-Ⅱsuperlattice Substrate

An improved installation of 2-hydroxy-4-methoxybenzyl(iHmb)method for chemical protein synthesis

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Chinese Chemical Letters 2024年第5期35卷 145-150页

作者： Ying li Long-Jie {1. Yong-Kang Zhou Jun liang bin Xiao Ji-Shen Zheng The First Affiliated Hospital of USTC MOE Key Laboratory for Membraneless Organelles and Cellular DynamicsDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China department of {1. University of Science and Technology of ChinaHefei 230027China

The 2-hydroxy-4-methoxybenzyl(Hmb)backbone modification can prevent amide bond-mediated sidereactions(e.g.,aspartimide formation,peptide aggregation)by installing the removable Hmb group into a peptide bond,thus improving the synthesis of long and challenging peptides and ***,its use is largely precluded by the limited Hmb’s installation *** this report,an improved installation of Hmb(iHmb)method was developed to achieve the flexible installation and the convenient removal of *** iHmb method involves two critical steps:(1.oxidative diazotization of the readily installed 2-hydroxy-4-methoxy-5-amino-benzyl(Hmab)to give 2-hydroxy-4-methoxy-5-diazonium-benzyl(Hmdab)by combining soamyl nitrite(IAN)/HBF_(4),and(2)reductive elimination of Hmdab to give the desired Hmb by 1.2-ethanedithiol(EDT).The iHmb method enables the installation of Hmb at any primary amino acid including the highly sterically hindered amino acids(e.g.,valine and isoleucine).The practicality and utility of the iHmb method was demonstrated by one-shot solid-phase synthesis of a challenging aspartimide-prone peptide,the mirror-image version of a hydrophobic peptide and a long-chain peptide up to ***,the iHmb method can be utilized to facilitate chemical protein ligation,as exemplified by the synthesis of the single-spanning membrane protein *** iHmb method expands the toolkit for peptide synthesis and ligation and facilitates the preparation of peptides/proteins.

关键词： Chemical protein synthesis Solid-phase peptide synthesis Removable backbone modification 2-Hydroxy-4-methoxybenzyl(Hmb)group Aspartimide-prone peptides Difficult peptides Membrane proteins

Efficacy and safety of Huzhang Granule,a compound Chinese herbal medicine,for acute gouty arthritis:A double-blind,randomized controlled trial

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Journal of Integrative Medicine 2024年第3期22卷 270-278页

作者： Hao wang Si-ting Chen Xiao-jie Ding Le Kuai {1.ang Hua Xin {1. Yi-fei wang Ming Zhang bin {1. Rui-ping wang Mi Zhou department of Dermatology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China Institute of Dermatology Shanghai Academy of Traditional Chinese MedicineShanghai 201203China department of Dermatology the Affiliated Hospital of Jiangxi University of Chinese MedicineNanchang 330000Jiangxi ProvinceChina Shanghai Skin Disease Hospital School of MedicineTongji UniversityShanghai 200443China Institute of Dermatology School of MedicineTongji UniversityShanghai 200443China

Background:Acute gouty arthritis(AGA)is an inflammatory joint disease with a high *** medical interventions,including nonsteroidal anti-inflammatory drugs,colchicine and glucocorticoids,can have serious adverse *** Granule(HZG),a compound Chinese herbal medicine,has been used to treat AGA for more than 30 years with satisfactory effects and no significant adverse ***,the efficacy and safety of HZG in AGA patients remains ***:The present investigation was designed to examine the efficacy and safety profile of HZG in managing AGA ***,setting,participants and interventions:The current study was conducted as a noninferiority,randomized controlled clinical trial on 1.0 eligible enrolled *** were randomly assigned into the HZG and etoricoxib *** were administered for 5 d,during which the HZG group received HZG and placebo etoricoxib,while the etoricoxib group received etoricoxib and placebo HZG in the same ratio(1.1..Main outcome measures:The primary outcome was pain experienced by the patient in the gout-afflicted joint from days 2 to 5 of the treatment *** pain level was measured via a visual analogue scale,ranging from 0 mm to 1.0 *** secondary outcomes comprised joint tenderness and swelling,reduction of inflammatory biomarkers,and the patient’s and investigator’s global evaluations of therapeutic ***:The mean reduction in pain was-51.22 mm(95%confidence interval[CI],[-53.42,-49.03]mm)for the HZG and-52.00 mm(95%CI,[-54.06,-49.94]mm)for the etoricoxib *** mean difference between the two groups was 0.78 mm(95%CI,[-2.25,3.81.mm).All additional efficacy endpoints,covering decreased inflammation and pain relief,yielded compelling proof of *** in the HZG group exhibited a comparatively lower rate of adverse events compared to those in the etoricoxib group(4.44%vs 1..33%;P≤0.05).Conclusion:HZG and etoricoxib groups demons

关键词： Acute gouty arthritis Huzhang Granule Randomized controlled trial Blind

The Effectiveness of Psychotherapy on Posttraumatic Stress Disorder in Soldier:A Systematic Review

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International Journal of Mental Health Promotion 2024年第7期26卷 499-516页

作者： Wencen Lan bin {1. Gai li Jianming liu School of Physical Education Central China Normal UniversityWuhan430079China

The objective of this systematic review is to examine the effectiveness of psychotherapy in treating Post-Traumatic Stress Disorder(PTSD)in military ***,Web of Science,The Cochrane library,EBSCO and CNKI databases were searched from 1.January,2000 to November 2022 for Randomized Controlled Trials(RCTs)on psychotherapeutic interventions for military *** physical Therapy Evidence Database(PEDro)scale was used to evaluate the quality of the *** researchers conducted literature screening,data extraction,and risk bias assessment in accordance with inclusion and exclusion ***,49 RCTs were included,involving a total of 5073 veterans,retired and active military from four *** average score on the PEDro scale was *** primary psychotherapeutic modalities for military PTSD intervention include Cognitive-Behavioral Therapy,Exposure Therapy,Mindfulness interventions,psychotherapy based on new technological tools,and other emerging psychotherapeutic *** review highlights that Cognitive Processing Therapy(CPT)and Prolonged Exposure Therapy(PET)stand out as the primary psychotherapeutic modalities for treating PTSD in military *** cases where CPT and PET yield limited benefits,Mindfulness interventions emerge as effective ***,considering the diverse needs and high dropout rates in the military,population,the review suggests using web-based,computer,and virtual reality technology tools as supplements to first-line treatments(CPT/PET)to enhance overall intervention *** the advancement of future psychotherapeutic initiatives,there is a pronounced emphasis on prioritizing proven first-line interventions,CPT and PET while also recognizing the potential of mindfulness-based interventions as credible *** tandem with this,the active integration of technological tools is advocated to amplify the therapeutic impact of conventional psychological treatment modalities.

关键词： Soldiers psychotherapy cognitive behavior therapy exposure therapy post-traumatic stress disorder mindfulness intervention

Photochromic radical states in 3D covalent organic frameworks with zyg topology for enhanced photocatalysis

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National Science Review 2024年第7期11卷 177-188页

作者： Tian-Tian Ma Guo-Zhang Huang Xiao-Han wang Yan {1.ang Run-Han {1. bin wang Su-Juan Yao Jia-Peng {1.ao Shun-{1. {1. Yong Yan Ya-Qian Lan School of chemistry South China Normal University department of {1. Guangdong Provincial Key Laboratory of Catalytic Chemistry Southern University of Science and Technology

Covalent-organic frameworks（COFs） with photoinduced donor-acceptor（D-A） radical pairs show enhanced photocatalytic activity in principle. However, achieving long-lived charge separation in COFs proves challenging due to the rapid charge recom{1.ation. Here, we develop a novel strategy by com{1.ing[6 + 4] nodes to construct zyg-type 3D COFs, first reported in COF chemistry. This structure type exhibits a fused Olympic-rings-like shape, which provides a platform for stabilizing the photoinduced D-A radical pairs. The zyg-type COFs containing catalytically active moieties such as triphenylamine and phenothiazine（PTZ） show superior photocatalytic production rates of hydrogen peroxide（H2O2）. Significantly, the photochromic radical states of these COFs show up to 400% enhancement in photocatalytic activity compared to the parent states, achieving a remarkable H2O2synthesis rate of 3324 μmol g-1.-1. which makes the PTZ-COF one of the best crystalline porous photocatalysts in H2O2production. This work will shed light on the synthesis of efficient 3D COF photocatalysts built on topologies that can facilitate photogenerating D-A radical pairs for enhanced photocatalysis.

关键词： 3D covalent-organic frameworks photochromic radical states donor and acceptor hydrogen peroxide photocatalysis