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Developing water quality retrieval models with in situ hyperspectral data in Poyang Lake,China

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Geo-Spatial Information Science 2016年第4期19卷 255-266页

作者： Fangyuan Chen di xiao Zhuochao Li School of Resource and Environmental Sciences Wuhan UniversityWuhanChina State-owned Assets Supervision and Administration Commission of Caidian district WuhanChina

Applying remote sensing techniques to develop the retrieval models and further to obtain the spatiotemporal information of water quality parameters is necessary for understanding,managing,and protecting lake *** study aimed to calibrate and validate the retrieval models for estimating the concentrations of chlorophyll a(C_(CHL)),suspended particulate matter(C_(SPM)),and dissolved organic carbon(C_(DOC))with the in situ hyperspectral measurements in Poyang Lake,China in 2010 and *** model calibration and validation results indicated that:(1)for C_(CHL)retrieval,significantly strong and moderate correlations existed between the measured and estimated values(with the correlation coefficient r=0.92 and r=0.76)using the exponential model and the three-band model,respectively,with biased estimation observed for the exponential model;(2)for retrieving C_(SPM),there was a strong correlation between the measured and estimated values(r=0.95)using the exponential model;and(3)no significant correlation between measured and estimated C_(DOC)values was found with our developed *** work is needed to allow the water quality of Poyang Lake to be accurately and steadily estimated,especially for C_(CHL)and C_(DOC).

关键词： Chlorophyll a suspended particulate matter dissolved organic carbon exponential model three-band model remote sensing reflectance

Chloride anion-induced dimer capsule based on a polyfluorinated macrocycle meta-WreathArene

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Chinese Chemical Letters 2023年第7期34卷 137-140页

作者： Shu Niu Hongyan xiao xiao-di Yang Huan Cong Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistrySchool of Future Technology.University of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100190China Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBejing 100190 China Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese MedicineShanghai University of Traditional Chinese MedicineShanghai 200438China

[1_n]metacyclophanes are a class of important building blocks for supramolecular assembly of artificial capsules. Herein we present the preparation and properties of a novel polyfluorinated macrocycle metaWreath Arene, a C_(2)-symmetrical [14]metacyclophane. Adopting a cone conformation in acetone solution,the macrocycle can form dimer capsules through hydrogen bonds induced by chloride anions. Each dimer capsule consists of two meta-Wreath Arene and two chloride anions, and has been unambiguously characterized both in solution and in solid state.

关键词： Macrocycle Metacyclophane Anion Assembly Capsule

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煤表面含氧官能团吸附氮化物的模拟计算研究

原子与分子物理学报 2025年第2期42卷 1-7页

作者：孙潇镝唐克王聚财富添洪新辽宁工业大学化学与环境工程学院锦州121001

煤表面六种常见的官能团结构单元包括酚羟基Ph-OH、羧基-COOH、羰基-C=O、醚键-O-、醇羟基R-OH和烷基R,采用巨正则蒙特卡洛(GCMC)和密度泛函理论(DFT)从原子层面模拟计算煤表面官能团对苯胺、吡啶、喹啉三种典型氮化物的吸附性能.通过... 详细信息

煤表面六种常见的官能团结构单元包括酚羟基Ph-OH、羧基-COOH、羰基-C=O、醚键-O-、醇羟基R-OH和烷基R,采用巨正则蒙特卡洛(GCMC)和密度泛函理论(DFT)从原子层面模拟计算煤表面官能团对苯胺、吡啶、喹啉三种典型氮化物的吸附性能.通过计算分析前线轨道、吸附能及分子间吸附距离等参数,探究三种氮化物在煤表面不同官能团上的吸附机理,结果表明煤表面模型上各官能团对三种氮化物的吸附强弱顺序均为:-COOH>R-OH>Ph-OH>-C=O>-O->R,三种氮化物在煤表面官能团的吸附强弱顺序为:吡啶>喹啉>苯胺.

关键词：煤官能团氮化物模拟吸附

Secure hash function based on chaotic tent map with changeable parameter

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High Technology Letters 2012年第1期18卷 7-12页

作者： Li Yantao xiao di Deng Shaojiang College of Computer Science Chongqing UniversityChongqing 400044P.R.China

A new algorithm for a novel hash function, based on chaotic tent map with changeable parameter, is proposed and analyzed. The one dimensional and piecewise tent map with changeable parameters decided by the position index of blocked messages is chosen, and blocked massages translated into ASCII code values are employed as the iteration time of the chaotic tent map. The final 128-bit hash value is generated by logical XOR operation on intermediate hash values. Theoretical analysis and computer simulation indicate that the proposed algorithm can satisfy the performance requirements of hash function.

关键词： chaos the tent map hash function changeable parameter

Unconventional Fluorescent and Multi-responsive Polysiloxane:Synthesis,Characterization and Biological Applications

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Chinese Journal of Polymer Science 2024年第5期42卷 579-590,I0006页

作者： xiao-di Li Shu-Sheng Li Xu-Bao Jiang xiao-Li Zhu Xiang Zheng Kong College of Chemistry and Chemical Engineering University of JinanJinan250022China College of Chemical Engineering Tianjin UniversityTianjin300072China Foshan(Southern China)Institute for New Materials Foshan528200China

Owing to their high significance in fundamental study and diverse applications,stimuli-responsive and fluorescent polymers,particularly those with cluster-triggered emission(CTE)featured by non-conjugated chromophores,have drawn tremendous attention in recent *** this work,fluorescent and multi-responsive polysiloxane(FRPS)was synthesized by hydrolytic condensation polymerization of 3-aminopropyl methyl diethoxysilane(APMS)with 3-(N-isopropyl propionamide)iminopropyl methyl diethoxysilane(APMS-NIP),which was formed in situ through aza-Michael addition between APMS and N-isopropyl *** was not only highly sensitive to temperature,pH and CO_(2) in water,but also showed an enhanced and stimuli-adjustable fluorescence *** effects of monomer feeding,pH and CO_(2) on its lower critical solution temperature and fluorescent property were *** fluorescence emission was ascribed to CTE *** addition,FRPS was shown to be highly potential as physiological indicator for cell imaging,and for controlled release and trace detection of *** study provides therefore a type of stimuli-responsive and fluorescent material for potential applications in biomedical fields,and it is also of great significance for understanding of the fluorescence mechanism of polysiloxane-based stimuli-responsive polymers.

关键词： Polysiloxane Multi-responsiveness Cluster-triggered emission Cell imaging Controlled drug release

Clinical significance of breast cancer susceptibility gene 1 expression in resected non-small cell lung cancer:A meta-analysis

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World Journal of Clinical Cases 2021年第30期9卷 9090-9100页

作者： Yang Gao xiao-di Luo xiao-Li Yang Dong Tu Department of Cardiothoracic Surgery 920^(th)Hospital of Joint Logistics Support Force of People’s Liberation Army of ChinaKunming 650032Yunnan ProvinceChina

BACKGROUND The clinical significance of breast cancer susceptibility gene 1(BRCA1)in nonsmall cell lung cancer(NSCLC)patients undergoing surgery remains unclear up to *** To explore the relation of BRCA1 expression with clinicopathological characteristics and survival in patients with resected *** EMBASE,PubMed,Web of Science,and The Cochrane Library databases were searched to identify the relevant *** assess the correlation between the expression of BRCA1 and clinicopathological characteristics and prognosis of patients with resected NSCLC patients,the combined relative risks or hazard ratios(HRs)with their corresponding 95%confidence intervals[CIs]were *** Totally,11 articles involving 1041 patients were included in the *** results indicated that the expression of BRCA1 was significantly correlated with prognosis of resected *** BRCA1 expression signified a shorter overall survival(HR=1.60,95%CI:1.25-2.05;Pdisease-free survival(HR=1.78,95%CI:1.42-2.23;Pdicates a poor prognosis in resected NSCLC ***1 might serve as an independent biomarker to predict clinical outcomes and help to customize optimal adjuvant chemotherapy for NSCLC patients who had received surgical therapy.

关键词： Breast cancer susceptibility gene 1 Non-small cell lung cancer Clinico-pathological characteristics Prognosis Surgery Meta-analysis

Adaptive image encryption scheme based on chaotic map

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High Technology Letters 2013年第1期19卷 76-81页

作者：邱劲 Liao xiaofeng xiao di Xiang Tao College of Computer Science and Engineering Chongqing University College of Computer and Information Science Southwest University

Most of the existing image encryption schemes with the substitutlon-chltuslon structure are not secure and efficient. In this letter, a chaos-based pseudo-random bit generator with good statistical properties is proposed, where a simple post-processing by compressing is employed. A new adaptive image encryption scheme with the substitution-diffusion architecture is designed using the new pseu- do-random bit generator. In the scheme, the session key for the pseudo-random bit generator is dependent on the content of the image which ensures that the scheme can effectively resist knownplaintext and chosen-plaintext attacks. Theoretical analysis and computer simulation indicate that the proposed algorithm is efficient and highly secure.

关键词： image encryption chaotic map substitution-diffusion chaotic key stream

Ag^(+)、Zn^(2+)、Cr^(3+)改性Y型分子筛吸附脱除喹啉的模拟计算研究

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原子与分子物理学报 2025年第1期42卷 61-68页

作者：孙潇镝唐克高畅富添王聚财洪新辽宁工业大学化学与环境工程学院锦州121001 葫芦岛市应急管理局葫芦岛125000

首先考察了吸附时间对三种改性Y型分子筛AgY、ZnY、CrY吸附脱除模拟燃料中喹啉的影响,结果发现三种分子筛对喹啉的吸附容量和去除率大小顺序均为:AgY>CrY>ZnY.运用Materials Studio软件,采用巨正则蒙特卡洛(GCMC)和密度泛函理论(DFT)对... 详细信息

首先考察了吸附时间对三种改性Y型分子筛AgY、ZnY、CrY吸附脱除模拟燃料中喹啉的影响,结果发现三种分子筛对喹啉的吸附容量和去除率大小顺序均为:AgY>CrY>ZnY.运用Materials Studio软件,采用巨正则蒙特卡洛(GCMC)和密度泛函理论(DFT)对改性Y型分子筛吸附喹啉机理进行了模拟计算研究,得出以下结论:模拟计算AgY、ZnY、CrY的比表面积和孔体积与其低温N2吸附-脱附表征结果基本一致,并且发现改性Y型分子筛的吸附脱氮能力与比表面积和孔体积关系不大;以Fukui函数为基础,采用Mulliken和Hirshfeld两种布局数分析方法模拟计算了三种改性Y型分子筛的相对亲电性并分析Lewis酸强弱,其Lewis酸大小顺序为:AgY>CrY>ZnY;对三种改性分子筛进行了前线轨道分析,其化学吸附活性大小为AgYCrY>ZnY,模拟计算所得各种结果与实验结果顺序完全一致.

关键词： Y型分子筛改性吸附喹啉模拟

Decoy-state method for quantum-key-distribution-based quantum private query

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Science China(Physics,Mechanics & Astronomy) 2022年第4期65卷 41-48页

作者： Bin Liu Shuang Xia di xiao Wei Huang Bingjie Xu Yang Li College of Computer Science Chongqing UniversityChongqing 400044China Science and Technology on Communication Security Laboratory Institute of Southwestern CommunicationChengdu 610041China

The quantum private query(QPQ)is a quantum solution for the symmetrically private information retrieval *** study the security of quantum-key-distribution-based QPQ with weak coherent *** result shows that multiphoton pulses have posed a serious threat to the participant’s privacy in QPQ *** we propose a decoy-state method that can help the honest participant detect the attack by exploiting multiphoton pulses and improving the key distillation process to defend against such *** analysis demonstrates that our decoy-state method significantly improves the security of the QPQ with weak coherent pulses,which solves a major obstacle in the practical application of the QPQ.

关键词： quantum private query symmetrically private information retrieval quantum key distribution decoy state weak coherent pulse

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