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Soil nutrient stoichiometric ratios and their inf.uencing f.ctors in mountainous areas of.the Ili River Valley

Zhongshan Daxue Xuebao/Acta Scientiarum Natralium Universitatis sunyatseni 2024年第3期63卷 60-70页

作者： Yang H. sun H. Tian Z. Liu T. Wu f. Jin X. School of.Geography and Tourism Xinjiang Normal University Urumqi 830054 China College of.Lif. Science Xinjiang Normal University Urumqi 830054 China

Studying the soil stoichiometric ratios and the inf.uencing f.ctors of.dif.erent altitude gradients in mountain ecosystems in arid zones is signif.cant in revealing the soil nutrient status and maintaining the sustainable development of.mountain ecosystems. In this paper, 13 sample plots were established along the elevation gradient in the mountains of.the southern Ili River Valley, and soil in the depth of.0-20 cm was studied to investigate nutrient stoichiometric ratios and their inf.uencing f.ctors. The results showed that: (1) Soil acidity gradually increased with elevation. Organic carbon and total nitrogen contents are signif.cantly higher in the middle and high mountain belts than in the low mountain belts, while total phosphorus and total potassium contents are opposite. (2) Due to altitudinal dif.erences, the carbon-to-nitrogen ratio is signif.cantly higher in the mid-alpine belt than in the low and alpine belts; carbon and phosphorus ratios are signif.cantly higher in the middle and high mountain belts than in the middle and low mountain belts; carbon and potassium ratios are signif.cantly higher in the middle and high mountain belts than in the low mountain belts; nitrogen-phosphorus ratios are higher in the alpine zone, but there is no major dif.erence between the transition zone and the low mountain zone; nitrogen-potassium ratios are much higher in the alpine zone, whereas there is no signif.cant dif.erence between the mid-alpine zone and the transition zone; the dif.erences of.phosphorus/potassium ratios between altitudinal gradients are ignorable. (3) The dominant f.ctors af.ecting the stoichiometric ratios of.soil physicochemical indicators are soil organic carbon (62.4%), total phosphorus (15.9%), and total carbon (13.7%); while the major environmental f.ctors are mean annual soil temperature (27.1%), vegetation index (11.2%), elevation (12.3%), and mean annual atmospheric temperature (3.4%). The study showed that the physicochemical indicators have an important inf.uence on the soil stoichiomet

关键词： Ili River valley mountains impact f.ctor soil nutrients stoichiometric ratio

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Preparation and gastrointestinal release characteristics of.zein / Houttuynia cordata f.avonoids composite nanoparticles

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Jingxi Huagong/f.ne Chemicals 2024年第6期41卷 1345-1353and1361页

作者： Jiang Y. f.n f. Chen C. sun X. Liu J. College of.Lif. Science Southwest Forestry University Yunnan Kunming 650224 China Key Laboratory of.National f.restry and Grassland Administration on Biodiversity Conservation in Southwest China Yunnan Kunming 650224 China Key Laboratory of.f.rest Disaster Warning and Control of.Yunnan Province Yunnan Kunming 650224 China College of.f.restry Southwest Forestry University Yunnan Kunming 650224 China

In order to improve the stability of.Houttuynia cordata f.avonoids (HCf., Zein/HCf.composite nanoparticles were synthesized f.om zein (Zein) and HCf.by anti-solvent method and characterized f.r structural analysis. The ef.ects of.zein and HCf.mass ratio on the composite nanoparticles were f.rther investigated. The results showed that there were intermolecular f.rces, including hydrogen bonding, hydrophobic and electrostatic interactions, between HCf.and zein. When m(Zein)∶m(HCf.=20∶3, Zein/HCf.composite nanoparticles exhibited the best perf.rmance with the highest melting temperature reaching 85.09 ℃, 12.84 ℃ higher than that of.Zein nanoparticles (72.25 ℃), its microstructure unif.rmly dispersed in a spherical shape with the smallest average particle size and polydispersity index (PDI), the narrowest particle size distribution, and the largest absolute Zeta potential value as well as HCf.encapsulation rate. In addition, the composite nanoparticles exhibited higher 1,1-diphenyl-2-picrylhydrazyl and diammonium 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulf.nate) radicals scavenging ability, and better heat treatment protection ability by improving the heating stability of.HCf. In the simulated gastrointestinal digestion process, the HCf.release rate was only 22.31% af.er 120 min of.digestion by simulated gastric f.uid (SGf. and reached 75.66% af.er 120 min of.digestion by simulated intestinal f.uid (SIf.. The HCf.release trends in the simulated gastrointestinal f.uid were all consistent with the Ritger-Peppas model, but the release mechanisms were dif.erent, with a non-f.ck dif.usion mechanism in SGf.while a f.ck dif.usion mechanism in SIf. © 2024 f.ne Chemicals. All rights reserved.

关键词： f.od chemicals gastrointestinal release characteristics Houttuynia cordata f.avonoids nanoparticles zein

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Molecular Chaperone-Dependent Polymer Translocation through Nanopores: The Ef.ects of.Chaperone Concentration and Chaperone-Polymer Interaction

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Chinese Journal of.Polymer Science 2024年第1期42卷 125-132,I0011页

作者： Chang-Sheng Zuo Kang Wang Li-Zhen sun Ting-Ting sun Department of.Physics Zhejiang University of Science and TechnologyHangzhou 310023China Department of.Applied Physics Zhejiang University of TechnologyHangzhou 310014China

The polymer translocation through a nanopore f.om a donor space(or named cis side) to a receiver space(trans side) in the chaperone-induced crowded environment has attracted increasing attention in recent years due to its signif.cance in biological systems and technological applications. In this work, we mainly f.cus on the ef.ects of.chaperone concentration and chaperone-polymer interaction on the polymer translocation. By assuming the polymer translocation to be a quasi-equilibrium process, the f.ee energy f.of.the polymer can be estimated by Rosenbluth-Rosenbluth method and then the translocation time τ can be calculated by f.kker-Plank equation based on the obtained f.ee energy landscape. Our calculation results show that the translocation time can be controlled by independently tuning the chaperone concentration and chaperone-polymer interaction at the cis side or the trans side. There exists a critical chaperone-polymer attraction ε~*=-0.2 at which the volume exclusion and interaction ef.ects of.the chaperone can balance each other. Additionally, we also f.nd that at large chaperone-polymer attraction, the translocation time is mainly governed by the dif.usion coef.icient of.the polymer.

关键词： Polymer translocation Rosenbluth-Rosenbluth method f.kker-Plank equation f.ee energy landscapes

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Durable and enhanced immunity against SARS-CoV-2 elicited by manganese nanoadjuvant f.rmulated subunit vaccine

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Signal Transduction and Targeted Therapy 2024年第1期9卷 47-50页

作者： Mengyu Guo Mingjing Cao Jiuf.ng sun Ziwei Chen Xin Wang Lianpan Dai George f.Gao Yuliang Zhao Yaling Wang Chunying Chen CAS Key Laboratory f.r Biomedical Ef.ects of.Nanomaterials and Nanosaf.ty&CAS Center f.r Excellence in Nanoscience National Center for Nanoscience and Technology of ChinaBeijingChina Guangdong Provincial Institute of.Public Health Guangdong Provincial Center for Disease Control and PreventionGuangzhouChina CAS Key Laboratory of.Pathogen Microbiology and Immunology Institute of MicrobiologyBeijingChina

Dear editor,Vaccines are the most ef.icient and ef.ective means to prevent inf.ctious diseases,but improving the long-term protective ef.icacy is still a major challenge in contemporary vaccine development.1 The waning immunity varies depending on the diversif.cation of.the pathogen and the number of.booster doses.1 Strategies to overcome this warrant is using adjuvants that amplif. the immune response,and drive the production of.memory B and T cells or long-lived plasma cells that recognize the pathogen f.r durable protection.2–4 Although existing adjuvants have achieved promising results,research on generating durable protective immunity is lacking in promoting vaccine development and staying ahead of.global pandemics such as coronavirus disease 2019(COVID-19).The precisely designed nanoadjuvants can enhance lymph node targeting and increase antigenpresenting cell(APCs)uptake,achieving the co-delivery of.adjuvants and antigens and activating innate and adaptive immune responses.5 Previously,we reported a manganese nanoadjuvant(MnARK)and receptor-binding domain(RBD)monomer antigen f.rmulated nanovaccine.6 MnARK transported antigens to lymph nodes,activated the STING pathway,elicited strong neutralizing abilities and increased immune memory T cell percentage against the inf.ction of.severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).6 Regarding the long-term protection potential of.MnARK f.r subunit vaccine development,we f.rther explored the durable immune regulation abilities of.MnARK to a SARS-CoV-2 RBD dimer antigen,which has been used in an approved COVID-19 subunit vaccine Zf.001 with aluminum adjuvant(alum).7,8 TEM result revealed that RBD dimer could interact with BSA on MnARK surf.ce and epitope can be well preserved(Supplementary f.g.1a).The size and zeta potential of.MnARK-RBD dimer nanovaccine was~58 nm and-14 mV,respectively(Supplementary f.g.1b,c).

关键词： manganese immunity protective

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An intrinsically self.healing and anti-f.eezing molecular chains induced polyacrylamide-based hydrogel electrolytes f.r zinc manganese dioxide batteries

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Journal of.Energy Chemistry 2024年第2期89卷 565-578,I0013页

作者： Haiyang Liao Wenzhao Zhong Chen Li Jieling Han Xiao sun Xinhui Xia Ting Li Abolhassan Noori Mir f.Mousavi Xin Liu Yongqi Zhang Institute of.f.ndamental and f.ontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina School of.Mechanical Engineering Hunan University of TechnologyZhuzhou 412007HunanChina School of.Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014ZhejiangChina Department of.Chemistry Faculty of Basic SciencesTarbiat Modares UniversityTehran 14117-13116Iran State Key Laboratory of.New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200HubeiChina

The anti-f.eezing strategy of.hydrogels and their self.healing structure are of.en contradictory,it is vital to break through the molecular structure to design and construct hydrogels with intrinsic anti-f.eezing/self.healing f.r meeting the rapid development of.f.exible and wearable devices in diverse service conditions.Herein,we design a new hydrogel electrolyte(Af.SH-Hydrogel)with intrinsic anti-f.eezing/self.healing capabilities by introducing ethylene glycol molecules,dynamic chemical bonding(disulf.de bond),and supramolecular interaction(multi-hydrogen bond)into the polyacrylamide molecular chain.Thanks to the exceptional f.eeze resistance(84%capacity retention at-20℃)and intrinsic self.healing capabilities(95%capacity retention af.er 5 cutting/self.healing cycles),the obtained Af.SH-Hydrogel makes the zinc||manganese dioxide cell an economically f.asible battery f.r the state-of.the-art applications.The Zn||Af.SH-Hydrogel||MnO_(2)device of.ers a near-theoretical specif.c capacity of.285 m A h g^(-1)at 0.1 A g^(-1)(Coulombic ef.iciency≈100%),as well as good self.healing capability and mechanical f.exibility in an ice bath.This work provides insight that can be utilized to develop multif.nctional hydrogel electrolytes f.r application in next generation of.self.healable and f.eeze-resistance smart aqueous energy storage devices.

关键词： f.exible aqueous battery Hydrogel electrolyte Anti-f.eezing Self.healing Dual-dynamic reversible bond

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Response Evaluation Using Contrast-Enhanced Ultrasound f.r Unresectable Advanced Hepatocellular Carcinoma Treated With Tyrosine Kinase Inhibitors Plus Anti-PD-1 Antibody Therapy

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Ultrasound in Medicine and Biology 2024年第1期50卷 142-149页

作者： Zhao C.-K. Guan X. Pu Y.-Y. Zhou B.-Y. Wang L.-f. sun Y.-K. Yin H.-H. Xia H.-S. Wang X. Han H. Xu H.-X. Department of.Ultrasound Zhongshan Hospital Institute of Ultrasound in Medicine and Engineering Fudan University Shanghai China Shanghai Institute of.Medical Imaging Shanghai China Central Laboratory and Department of.Medical Ultrasound Sichuan Academy of Medical Sciences Sichuan Provincial People's Hospital University of Electronic Science and Technology of China Chengdu China

Objective: The aim of.the work described here was to evaluate the role of.contrast-enhanced ultrasound (CEUS) in response evaluation f.r unresectable advanced hepatocellular carcinoma (HCC) treated with tyrosine kinase inhibitors (TKIs) plus anti-programmed cell death protein-1 (PD-1) antibody therapy. Methods: A prospective cohort of.consecutive patients with HCC who received combined TKI/anti-PD-1 antibody treatment f.r unresectable HCC between January 2022 and October 2022 was included in this study. The patients underwent unenhanced ultrasound (US) and CEUS examinations bef.re treatment and at f.llow-up. Changes in the largest diameters of.the target tumor on unenhanced US and the largest diameters of.the enhancing target tumors on CEUS were evaluated. Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 with unenhanced US and magnetic resonance imaging/computed tomography (MRI/CT) and modif.ed RECIST (mRECIST) with CEUS and CEMRI/CT were used to assess treatment response. Results: A total of.24 HCC patients (23 men and 1 woman; mean age: 56.5 ± 8.5 y; Barcelona Clinic Liver Cancer stage C, 62.5%; 29 intrahepatic target tumors) were studied. Calculations of.degree of.necrosis in the target tumors revealed no signif.cant dif.erences between CEUS and CEMRI/CT (44.5 ± 36.2% vs. 45.3 ± 36.8%, p = 0.862). As f.r the dif.erentiation of.responders f.om non-responders, the agreement between RECIST version 1.1 of.unenhanced US and mRECIST-CEUS was poor (κ coef.icient = 0.233). Meanwhile, there was a high degree of.concordance between mRECIST-CEUS and mRECIST-CEMRI/CT (κ coef.icient = 0.812). Conclusion: CEUS proved to be superior to baseline US and is comparable to CEMRI/CT in def.ning treatment outcome f.r combined TKI/anti-PD-1 antibody therapy. © 2023 World f.deration f.r Ultrasound in Medicine & Biology

关键词： Anti-angiogenic therapy Anti-PD-1 antibody Contrast-enhanced ultrasound Hepatocellular carcinoma

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Enhanced bif.nctional oxygen electrochemical catalytic perf.rmance using La-doped Cof._(2)O_(4)spinel supported by 3D-G f.r Zn-air batteries

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Journal of.Energy Chemistry 2024年第7期94卷 778-788页

作者： Yinggang sun Tingwei Zhang Peng sun Jigang Wang Wenjie Duan Yanqiong Zhuang Likai Wang Zhongf.ng Li School of.Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255049ShandongChina

The preparation of.bif.nctional catalysts f.r oxygen reduction(ORR)and oxygen evolution(OER)is crucial f.r Zn-air batteries.Here,we report a La doped Cof._(2)O_(4)spinel catalyst supported on threedimensional graphene(3D-G),where La can f.cilitate electron transf.r f.om Co to f.,leading to increased electron cloud density in f. and improved catalytic perf.rmance.The redshif. of.the G peak in the Raman spectra indicates the interaction between theπbond of.3D-G and d orbitals in La_(0.2)Cof._(1.8)0_(4).La_(0.2)Cof._(1.8)/3D-G exhibits superior ORR perf.rmance(E_(1/2)=0.86 V vs.RHE)and OER perf.rmance(E_(j=10)=1.55 V vs.RHE)to Cof._(2)0_(4)/3D-G(E_(1/2)=0.831 V vs.RHE,E_(j=10)=1.603 V vs.RHE).f.rthermore,it demonstrates excellent bif.nctional oxygen catalytic perf.rmance while maintaining high power density and stability in liquid zinc-air batteries(ZABs)and f.exible ZABs(f.ZABs).This work presents a viable strategy f.r utilizing rare earth element doped spinels to enhance oxygen catalyst and zABs perf.rmance.

关键词： Zn-air batteries Electrocatalysts La_(0.2)Cof._(1.8)/3D-G Electron pump Bif.nctional oxygen catalytic perf.rmance

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Management of.triplet excitons transition:f.ne regulation of.f.rster and dexter energy transf.r simultaneously

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Light(Science & Applications) 2024年第2期13卷 302-315页

作者： Jiaqiang Wang Yujie Yang Xinnan sun Xiaoning Li Liyao Zhang Zhen Li Institute of.Molecular Aggregation Science Tianjin UniversityTianjin300072China School of.Lif. Sciences Tianjin UniversityTianjin300072China Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials Department of ChemistryWuhan UniversityWuhan430072China Wuhan National Laboratory f.r Optoelectronics Huazhong University of Science and TechnologyWuhan430072China Joint School of.National University of.Singapore Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou350207China

Understanding and management of.triplet excitons transition in the same molecule remain a great challenge.Hence,f.r the f.rst time,by host engineering,manageable transitions of.triplet excitons in a naphthalimide derivative NDOH were achieved,and monitored through the intensity ratio(ITADf.IRTP)between thermally activated delayed f.uorescence(TADf.and room-temperature phosphorescence(RTP).Energy dif.erences between lowest triplet excited states of.host and guest were changed f.om 0.03 to 0.17 eV,and ITADf.IRTP of.NDOH decreased by 200 times,thus red shif.ing the af.erglow color.It was proposed that shorter conjugation length led to larger band gaps of.host materials,thus contributing to ef.icient Dexter and inef.icient f.rster energy transf.r.Interestingly,no transition to singlet state and only strongest RTP with quantum yield of.13.9%could be observed,when PBNC with loosest stacking and largest band gap acted as host.This work provides novel insight f.r the management and prediction of.triplet exciton transitions and the development of.smart af.erglow materials.

关键词： materials transition transitions

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Multimodal Social Media f.ke News Detection Based on Similarity Inf.rence and Adversarial Networks

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Computers, Materials & Continua 2024年第4期79卷 581-605页

作者： f.ngf.ng Shan Huif.ng sun Mengyi Wang College of.Computer Zhongyuan University of TechnologyZhengzhou450007China Henan Key Laboratory of.Cyberspace Situation Awareness Zhengzhou 450001China

As social networks become increasingly complex, contemporary f.ke news of.en includes textual descriptionsof.events accompanied by corresponding images or videos. f.ke news in multiple modalities is more likely tocreate a misleading perception among users. While early research primarily f.cused on text-based f.atures f.rf.ke news detection mechanisms, there has been relatively limited exploration of.learning shared representationsin multimodal (text and visual) contexts. To address these limitations, this paper introduces a multimodal modelf.r detecting f.ke news, which relies on similarity reasoning and adversarial networks. The model employsBidirectional Encoder Representation f.om Transf.rmers (BERT) and Text Convolutional Neural Network (Text-CNN) f.r extracting textual f.atures while utilizing the pre-trained Visual Geometry Group 19-layer (VGG-19) toextract visual f.atures. Subsequently, the model establishes similarity representations between the textual f.aturesextracted by Text-CNN and visual f.atures through similarity learning and reasoning. f.nally, these f.atures aref.sed to enhance the accuracy of.f.ke news detection, and adversarial networks have been employed to investigatethe relationship between f.ke news and events. This paper validates the proposed model using publicly availablemultimodal datasets f.om Weibo and Twitter. Experimental results demonstrate that our proposed approachachieves superior perf.rmance on Twitter, with an accuracy of.86%, surpassing traditional unimodalmodalmodelsand existing multimodal models. In contrast, the overall better perf.rmance of.our model on the Weibo datasetsurpasses the benchmark models across multiple metrics. The application of.similarity reasoning and adversarialnetworks in multimodal f.ke news detection signif.cantly enhances detection ef.ectiveness in this paper. However,current research is limited to the f.sion of.only text and image modalities. f.ture research directions should aimto f.rther integrate f.atures f.omadditionalmodalities to comprehensiv

关键词： f.ke news detection attention mechanism image-text similarity multimodal f.ature f.sion

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A Note of.the Interpolating Sequence in Qp∩H~∞

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Wuhan University Journal of.Natural Sciences 2024年第1期29卷 1-6页

作者： ZHOU Jizhen sun Hejie Anhui University of.Science and Technology School of.Mathematics and Big Data

In this paper,{zn}n=1~∞ acts as an interpolating sequence f.r Qp∩H~∞.An analytic f.nction f.is constructed,and f.zn)=∑jλjf.j(zn)=λn,n=1,2,…f.r any {λn}∈l~∞,wheref.and ■ belong to Qp∩H~∞.As a result,the st... 详细信息

关键词： Q_p space H∞ space f.(p,p - 2,s) ∩H~∞ interpolating sequence

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