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Spatial and temporal transferability of Degree-Day Model and Simplified Energy Balance Model:a case study

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Research in Cold and Arid Regions 2020年第2期12卷 95-103页

作者： huilin li State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China Tianshan Glaciological Station Chinese Academy of SciencesLanzhouGansu 730000China

Glacier mass balance, the difference between accumulation and ablation at the glacier surface, is the direct reflection of the local climate regime. Under global warming, the simulation of glacier mass balance at the regional scale has attracted increasing interests. This study selects Urumqi Glacier No. 1 as the testbed for examining the transferability in space and time of two commonly used glacier mass balance simulation models: i.e., the Degree-Day Model(DDM) and the simplified Energy Balance Model(s EBM). Four experiments were carried out for assessing both models’ temporal and spatial transferability. The results show that the spatial transferability of both the DDM and s EBM is strong, whereas the temporal transferability of the DDM is relatively weak. For all four experiments, the overall simulation effect of the s EBM is better than that of the DDM. At the zone around Equilibrium line Altitude(ELA), the DDM performed better than the s ***, the accuracy of parameters, including the lapse rate of air temperature and vertical gradient of precipitation at the glacier surface, is of great significance for improving the spatial transferability of both models.

关键词： Degree-Day Model Simplified Energy Balance Model temporal and spatical transferability Urumqi Glacier No.1

Blockchain-based continuous data integrity checking protocol with zero-knowledge privacy protection

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Digital Communications and Networks 2022年第5期8卷 604-613页

作者： Yiting Huang Yong Yua huilin li Yannan li Aikui Tian School of Computer Science Shaanxi Normal UniversityXi'an710062China School of Cyber Science and Technology Beihang UniversityBeijing100191China School of Computing and Information Technology University of WollongongWollongongNSW2522Australia School of Computer Science and Technology Shandong University of TechnologyZibo255000China

The cloud computing technology has emerged,developed,and matured in recent years,consequently commercializing remote outsourcing storage *** increasing number of companies and individuals have chosen the cloud to store their ***,accidents,such as cloud server downtime,cloud data loss,and accidental deletion,are serious issues for some applications that need to run around the *** some mission and business-critical applications,the continuous availability of outsourcing storage services is also necessary to protect users'outsourced data during ***,ensuring the continuous availability of data in public cloud data integrity auditing protocols leads to data privacy issues because auditors can obtain the data content of users by a sufficient number of storage ***,protecting data privacy is a burning *** addition,existing data integrity auditing schemes that rely on semi-trusted third-party auditors have several security problems,including single points of failure and performance *** deal with these issues,we propose herein a blockchain-based continuous data integrity checking protocol with zero-knowledge privacy *** realize a concrete construction by using a verifiable delay function with high efficiency and proof of retrievability,and prove the security of the proposal in a random oracle *** proposed construction supports dynamic updates for the outsourced *** also design smart contracts to ensure fairness among the parties ***,we implement the protocols,and the experimental results demonstrate the efficiency of the proposed protocol.

关键词： Continuous availability Verifiable delay function Zero-knowledge privacy Blockchain

Chemical Characteristics and Environmental Significance of Fresh Snow Deposition on Urumqi Glacier No.1 of Tianshan Mountains, China

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Chinese Geographical Science 2010年第5期20卷 389-397页

作者： li Zhongqin li huilin DONG Zhiwen ZHANG Mingjun The State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering Research Institute/Tianshan Glaciological Station Chinese Academy of Sciences Lanzhou 730000 China College of Geography and Environment Science Northwest Normal University Lanzhou 730070 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

Ice and snow chemistry of alpine glaciers is crucial for the research of regional atmospheric environment change. Fresh snow samples were weekly collected from Urumqi Glacier No.1 in the Tianshan Mountains, Xin- jiang, China, and the chemical characteristics and seasonal variations of major ions, mineral dust, δ18O and trace metals were measured. Results show that the concentrations of major ions in the snow are Ca2+ > SO42-> NH4+ > NO3-> Cl-> Na+ > Mg2+ > K+, in which Ca2+ is the dominant cation, and SO42-is the dominant anion. All major ions have close positive correlations with each other except NO3-. δ18O shows positive correlation with air temperature change during the study period. Mineral dust particle and major ionic concentrations in fresh snow have obvious seasonal change, with high concentration in spring but low concentration in summer and autumn, which indicates that the chemical mass input from Asian dust activity to snow is very significant. Temporal changes of trace metals in fresh snow, e.g., Cd, Pb, Zn, Al, Fe, have shown that human-induced pollution of central Asian region also has large contribution to the snow chemistry on alpine glaciers of the Tianshan Mountains.

关键词： Urumqi Glacier No. 1 fresh snow snow chemistry Tianshan Mountains

Investigation the improvement of high voltage spinel liNi_(0.5)Mn_(1.5)O_(4) cathode material by anneal process for lithium ion batteries

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Green Energy & Environment 2021年第1期6卷 114-123页

作者： Chao Gao Haiping liu Sifu Bi huilin li Chengshuai Ma School of Marine Science and Technology Harbin Institute of TechnologyWeihai264209China School of Materials Science and Engineering Harbin Institute of TechnologyWeihai264209China

The spinel liNi_(0.5)Mn_(1.5)O_(4)(LNMO)has been attracted great attention as lithium ion cathode material due to its high voltage and large energy ***,the practical application of LNMO is still limited by poor cycling ***,to improve the cycling stability of spinel LNMO,it was treated with anneal process at 900℃for 2 h after prepared by traditional solid-state method(LNMO-A).LNMO-A sample presented better electrochemical property especially under high rate,with capacity of 91.2 mAhg^(-1) after 1000 cycles under 10 *** superior electrochemical property was ascribed to the anneal process,resulting a stable crystal structure,indicated by XRD and Raman results of electrodes after 1000 cycles under 10 C and the longer solid-solution reaction,revealed by in-situ *** addition,the optimized particle size,micro morphology and the larger BET area surface induced by the recrystallization in anneal process also contributes to its superior electrochemical ***'s more,the thin layer,which interacted LNMO-A particles with each other,induced by particles remelting in anneal process is also beneficial for its excellent electrochemical *** study not only improved the electrochemical properties by anneal process,but also revealed the origins and mechanisms for its improvement.

关键词： High voltage liNi_(0.5)Mn_(1.5)O_(4) Anneal process Crystal structure stability Cycling stability In-situ XRD

A state of art review on time series forecasting with machine learning for environmental parameters in agricultural greenhouses

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Information Processing in Agriculture 2024年第2期11卷 143-162页

作者： Gedi liu Keyang Zhong huilin li Tao Chen Yang Wang National Innovation Center for Digital Fishery China Agricultural University100083 BeijingChina Key Laboratory of Smart Farming Technologies for Aquatic Animal and livestock Ministry of Agriculture and Rural AffairsChina Agricultural University100083 BeijingChina Beijing Engineering and Technology Research Center for Internet of Things in Agriculture China Agricultural University100083 BeijingChina College of Information and Electrical Engineering China Agricultural University100083 BeijingChina Department of Chemical and Process Engineering University of SurreyGU27XH GuildfordUnited Kingdom

Agricultural greenhouse production has to require a stable and acceptable environment,it is therefore essential for future greenhouse production to obtain full and precisely internal dynamic environment *** modeling based on machine learning methods,e.g.,intelligent time series prediction modeling,is a popular and suitable way to solve the above *** this article,a systematic literature review on applying advanced time series models has been systematically conducted via a detailed analysis and evaluation of 61 pieces selected from 221 *** historical process of time series model application from the use of data and information strategies was first ***,the accuracy and generalization of the model from the selection of model parameters and time steps,providing a new perspective for model development in this field,were compared and ***,the systematic review results demonstrate that,compared with traditional models,deep neural networks could increase data structure mining capabilities and overall information simulation capabilities through innovative and effective structures,thereby it could also broaden the selection range of environmental parameters for agricultural facilities and achieve environmental prediction end-to-end optimization via intelligent time series model based on deep neural networks.

关键词： Horticultural greenhouse environment Time series algorithms Prediction Deep neural networks

Glacier Volume Calculation from Ice-Thickness Data for Mountain Glaciers—A Case Study of Glacier No. 4 of Sigong River over Mt. Bogda, Eastern Tianshan, Central Asia

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Journal of Earth Science 2014年第2期25卷 371-378页

作者： Puyu Wang Zhongqin li Wenbin Wang huilin li Feiteng Wang State Key Laboratory of Cryospheric Sciences Tianshan Glaciological Station Cold and Arid Region Environment and Engineering Research Institute Chinese Academy of Sciences College of Geography and Environment Science Northwest Normal University

The determination of total glacial volume is important for the observation of climatic change and its consequences such as global sea-level rise. The tongue area of Glacier No. 4 of Sigong River over Mt. Bogda, eastern Tianshan was surveyed by ground-penetrating radar （GPR） and real time kinematic （RTK）-global positioning system （GPS） during the summer campaign 2009. In order to calculate the glacier volume, both co-kriging algorithm and estimation based on the theory of perfectly plastic material were employed. Results indicated that the ice-thickness distribution of the investigated glacier ranges from 0 to 105.0 m, with the mean thickness of 27.6 m in 2009. The corresponding ice volume was -0.076 km3 （-0.068 km3 water equivalent）. The bedrock topography shows more undulating than the glacier surface. The difference of the calculated ice volume in this study and the estimated value from the empirical formula is large. Therefore, it is urgent to validate the applicability of the ex- isting empirical formula.

关键词： ice volume ice-thickness GPR Glacier No. 4 of Sigong River Tianshan.

Effects of the incorporation amounts of CdS and Cd(SCN_(2)H_(4))_(2)Cl_(2)on the performance of perovskite solar cells

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International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 283-291页

作者： Jihong Zheng liangxin Zhu Zhitao Shen Fumin li Lanyu ling huilin li Chong Chen Henan Key Laboratory of Photovoltaic Materials Henan UniversityKaifeng 475004China School of Physics and Electronics Henan UniversityKaifeng 475004China

An excellent organolead halide perovskite film is important for the good performance of perovskite solar cells(PSCs).However,defects in perovskite crystals can affect the photovoltaic properties and stability of solar *** solve this problem,this study incorporated a complex of Cd S and Cd(SCN_(2)H_(4))_(2)Cl_(2)into the CH_(3)NH_(3)Pb I_(3)active *** effects of different doping concentrations of Cd S and Cd(SCN_(2)H_(4))_(2)Cl_(2)on the performance and stability of PSCs were *** showed that doping appropriate incorporation concentrations of Cd S and Cd(SCN_(2)H_(4))_(2)Cl_(2)in CH_(3)NH_(3)Pb I_(3)can improve the performance of the prepared solar *** specific,Cd S and Cd(SCN_(2)H_(4))_(2)Cl_(2)can effectively passivate the defects in perovskite crystals,thereby suppressing the charge recombination in PSCs and promoting the charge extraction at the TiO_(2)/perovskite *** to the reduction of perovskite crystal defects and the enhancement of compactness of the Cd S:Cd(SCN_(2)H4)_(2)Cl_(2):CH_(3)NH_(3)Pb I_(3)composite film,the stability of PSCs is significantly improved.

关键词： perovskite solar cells charge extraction defect passivation incorporation concentration

Integrated top-down and bottom-up proteomics mass spectrometry for the characterization of endogenous ribosomal protein heterogeneity

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Journal of Pharmaceutical Analysis 2023年第1期13卷 63-72页

作者： Ying Zhang Qinghua Cai Yuxiang Luo Yu Zhang huilin li School of Pharmaceutical Sciences Sun Yat-sen UniversityGuangzhou510006China Henan Engineering Laboratory for Mammary Bioreactor School of Life SciencesHenan UniversityKaifengHenan475004China The Shennong Laboratory Zhengzhou450002China Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical SciencesSun Yat-sen UniversityGuangzhou510006China

Ribosomes are abundant,large RNA-protein complexes that are the sites of all protein synthesis in *** in ribosomal proteins(RPs),including proteoforms arising from genetic variations,alternative splicing of RNA transcripts,post-translational modifications and alterations of protein expression level,have been linked to a diverse range of diseases,including cancer and *** characterization of ribosomal proteoforms is challenging but important for the discovery of potential disease biomarkers or protein *** the present work,using *** 70S RPs as an example,we first developed a top-down proteomics approach on a Waters Synapt G2 Si mass spectrometry(MS)system,and then applied it to the HeLa 80S *** results were complemented by a bottom-up *** total,50 out of 55 RPs were identified using the top-down *** these,more than 30 RPs were found to have their N-terminal methionine *** modifications such as methylation,acetylation,and hydroxylation were also observed,and the modification sites were identified by bottomup *** a HeLa 80S ribosomal sample,we identified 98 ribosomal proteoforms,among which multiple truncated 80S ribosomal proteoforms were observed,the type of information which is often overlooked by bottom-up *** their relevance to diseases is not yet known,the integration of topdown and bottom-up proteomics approaches paves the way for the discovery of proteoform-specific disease biomarkers or targets.

关键词： Ribosomal proteins Top-down MS Bottom-up MS Proteoforms

Spatial variability of glacial changes and their effects on water resources in the Chinese Tianshan Mountains during the last five decades

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Journal of Arid Land 2015年第6期7卷 717-727页

作者： WANG Puyu li Zhongqin HUAI Baojuan WANG Wenbin li huilin WANG lin State Key Laboratory of Cryospheric Sciences/Tianshan Glaciological Station Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences College of Geography and Environmental Science Northwest Normal University

Changes in glaciers in the Chinese Tianshan Mountains have been analyzed previously. However, most previous studies focused on individual glaciers and/or decentralized glacial basins. Moreover, a majority of these studies were published only in Chinese, which limited their usefulness at the international level. With this in mind, the authors reviewed the previous studies to create an overview of glacial changes in the Chinese Tianshan Mountains over the last five decades and discussed the effects of glacial changes on water resources. In response to climate change, glaciers in the Tianshan Mountains are shrinking rapidly and are ca. 20% smaller on average in the past five decades. Overall, the area reduction of glacial basins in the central part of the Chinese Tianshan Mountains is larger than that in the eastern and western parts. The spatial differentiation in glacial changes are caused by both differences in regional climate and in glacial factors. The effects of glacial changes on water resources vary in different river basins due to the differences in glacier distribution, characteristics of glacial change and proportion of the glacier meltwater in river runoff.

关键词： Chinese Tianshan Mountains climate change glacial change regional differences water resources