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多情景视角下丝绸之路经济带沿线省份碳达峰预测

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生态经济 2025年第1期41卷 80-88页

作者：张朝辉张靖雅于师琪石河子大学经济与管理学院新疆石河子832000

基于碳达峰碳中和目标的战略背景,结合“共建绿色丝绸之路”的时代倡议,考虑丝绸之路经济带国内沿线省份的产业发展态势,运用STIRPAT拓展模型,构建碳排放量与各影响因素的预测模型,进一步设置不同情景模式,预测丝绸之路经济带沿线省份2... 详细信息

基于碳达峰碳中和目标的战略背景,结合“共建绿色丝绸之路”的时代倡议,考虑丝绸之路经济带国内沿线省份的产业发展态势,运用STIRPAT拓展模型,构建碳排放量与各影响因素的预测模型,进一步设置不同情景模式,预测丝绸之路经济带沿线省份2021—2040年的碳达峰趋势。结果表明:(1)能源消耗水平对碳排放的影响最大,是影响丝绸之路经济带沿线省份碳达峰的最重要因素。(2)技术突破模式下,丝绸之路经济带沿线省份在2030年实现碳达峰,峰值4808.43×106吨;政策调控和数字经济模式下,丝绸之路经济带沿线省份在2035年实现碳达峰,峰值分别为5519.46×106吨和4988.32×106吨;基准模式下,丝绸之路经济带沿线省份未能实现碳达峰。(3)内蒙古、陕西和新疆是碳达峰重点关注区,应加快政策落地、加大技术突破、加强数字经济,确保如期实现碳达峰。

关键词：绿色丝绸之路经济带技术突破数字经济碳达峰情景预测

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A new construction for involutions over finite fields

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Frontiers of Mathematics in China 2022年第4期17卷 553-565页

作者： zhaohui zhang Qunying LIAO College of Mathematical Science Sichuan Normal UniversityChengdu610066China

In 2020,Niu et al.[***.,2020,12(2):165–185]studied the fixed points of involutions over the finite field with *** paper further discusses the relationship between the fixed points set and the non-fixed points set of two involutions f_(1)(x)and f_(2)(x)over the finite field F_(q),and then obtains a necessary and sufficient condition for that the composite function f_(1)■f_(2)(x)is also an involution over F_(q).In particular,a special class of involutions over some finite fields is determined completely.

关键词： Permutation polynomial involution fixed point non-fixed point

Targeting prion-like protein spreading in neurodegenerative diseases

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Neural Regeneration Research 2018年第11期13卷 1875-1878页

作者： zhaohui zhang Shuke Nie Liam Chen Department of Neurology Renmin HospitalWuhan University Department of Pathology Johns Hopkins University School of Medicine

The infectious template-mediated protein conversion is a unique mechanism for the onset of rare and fatal neurodegenerative disorders known as transmissible spongiform encephalopathies, or prion diseases, which affect humans and other animal species. However, emerging studies are now demonstrating prion-like mechanisms of self-propagation of protein misfolding in a number of common, non-infectious neurodegenerative diseases such as Alzheimer＇s disease and Parkinson＇s disease. It has been proposed that distinct and unrelated proteins（beta-amyloid, tau, α-synuclein, TAR DNA-binding protein 43 and huntingtin, etc.） associated with common neurodegenerative disorders can seed conversion and spread via cellto-cell transfer, sustaining the transmission of neurotoxic agents along a stereotypic route, sharing features at the heart of the intrinsic nature of prions. Here we review the most recent development on both the molecular mechanisms underlying the pathogenesis of prion-like neurodegenerative diseases as well as innovative methods and strategies for potential therapeutic applications.

关键词： prion-like synuclein tau TAR DNA-binding protein 43 beta-amyloid Parkinson's disease frontotemporal dementia amyotrophic lateral sclerosis Alzheimer's disease neurodegeneration

Recovery of Chitin and Protein from Shrimp Head Waste by Endogenous Enzyme Autolysis and Fermentation

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Journal of Ocean University of China 2019年第3期18卷 719-726页

作者： GUO Na SUN Jianan zhang zhaohui MAO Xiangzhao College of Food Science and Engineering Ocean University of China Qingdao 266003 China Laboratory for Marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China

The industrial processing of shrimp produces massive quantities of solid waste that is a notable source of animal protein, chitin, carotenoids, and other bioactive compounds that are not appropriately utilized. In the present study, chitin and protein extraction from shrimp head with autolysis and fermentation using Bacillus licheniformis were investigated. The results showed that when shrimp heads were autolyzed with a natural pH at 50℃ for 4 h, the total amino acid nitrogen in the supernatant was 5.01 mg mL^-1. Then, when a 50%(v/m) inoculum of the hydrolysate was incubated at 60℃ for 10 h, a deproteinization rate of 88.3% could be obtained. The fermented supernatant was processed into a dry protein powder, while the residues were demineralized by 10% citric acid for chitin. The recovered protein powder contained 5.5% moisture, 11.5% ash, and 66.7% protein, while the chitin contained 3.5% moisture, 2.1% ash, and 3.1% protein. In addition, amino acids, minerals, heavy metals, the degree of acetylation, microstructure, and Fourier-transform infrared(FT-IR) spectroscopy results were analyzed. Furthermore, the statistics of the large scale trial after treatment with 20 kg of shrimp heads were analyzed. Thus, this work made the shrimp waste utilization environmentally sound and valuable.

关键词： shrimp head waste endogenous enzyme autolysis fermentation chitin

Purification and Characterization of an Alkaline Protease from Micrococcus *** from the South China Sea

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Journal of Ocean University of China 2017年第2期16卷 319-325页

作者： HOU Enling XIA Tao zhang zhaohui MAO Xiangzhao College of Food Science and Engineering Ocean University of ChinaQingdao 266003P.R.China

Protease is wildly used in various fields,such as food,medicine,washing,leather,cosmetics and other industrial *** this study,an alkaline protease secreted by Micrococcus NH54PC02 isolated from the South China Sea was purified and *** growth curve and enzyme activity curve indicated that the cell reached a maximum concentration at the 30 th hour and the enzyme activity reached the maximum value at the 36 th *** protease was purified with 3 steps involving ammonium sulfate precipitation,ion-exchange chromatography and hydrophobic chromatography with 8.22-fold increase in specific activity and 23.68% increase in the *** molecular mass of the protease was estimated to be 25 k Da by SDS-PAGE *** optimum temperature and p H for the protease activity were 50℃ and pH 10.0,*** protease showed a strong stability in a wide range of pH values ranging from 6.0–11.0,and maintained 90% enzyme activity in strong alkaline environment with p H *** trials indicated that the protease might be serine *** it also possessed the characteristic of metalloprotease as it could be strongly inhibited by EDTA and strongly stimulated by Mn^(2+).Evaluation of matrix-assisted laser desorption ionization/time-of-flight MS(MALDI-TOF-TOF/MS) showed that the protease might belong to the peptidase S8 family.

关键词： purification characterization protease Micrococcus sp. the South China Sea

Anomalous sound propagation due to the horizontal variation of seabed acoustic properties

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Science China(Physics,Mechanics & Astronomy) 2004年第5期47卷 571-580页

作者： LI Zhenglin zhang Renhe PENG zhaohui LI Xilu National Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China National Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China National Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China National Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China

The sound propagation in shallow water is greatly influenced by the acoustic properties of seabed. An anomalous transmission loss was observed in an experiment, and a range dependent bottom model with horizontal variation of seabed acoustic property is proposed and could be well used to explain the anomalous phenomena. It is shown that the horizontal variation of bottom properties has a great effect on underwater sound propagation, and it should be given much attention in sound propagation and geoacoustic inversion problems.

关键词： sound propagation, bottom acoustic property, horizontal variation.

Electrochemical Sensor for Sensitive Determination of Ga（III） Ion Based on β-Cyclodextrin Incorporated Multi-walled Carbon Nanotubes and Imprinted Sol-gel Composite Film

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Chinese Journal of Chemistry 2012年第2期30卷 377-385页

作者： Hu,Yufang zhang,zhaohui zhang,Huabin Luo,Lijuan zhang,Minglei Yang,Xiao Yao,Shouzhuo College of Chemistry and Chemical Engineering Jishou UniversityJishouHunan 416000China State Key Laboratory of Chemo/Biosensing and Chemometrics ChangshaHunan 410082China

A novel sensor for detection of trace gallium ion [Ga（III）] was created by stepwise modification of a gold electrode with fl-cyclodextrin （β-CD）/multi-walled carbon nanotubes （MWCNTs） and an ion imprinted polymer （IIP）. The sensor surface morphology was characterized by scanning electron microscopy. The electrochemical performance of the imprinted sensor was investigated by cyclic voltammetry, differential pulse voltammetry and chronoamperometry. The sensor displayed excellent selectivity towards the target Ga（III） ion. Meanwhile, the introduced MWCNTs displayed noticeable catalytic activity, and fl：CD demonstrated significant enrichment capacity. A linear calibration curve was obtained covering the concentration range from 5.0 × 10 8 to 1.0 × 10-4 moloL-1, with a detection limit of 7.6× 10 9 mol·L-1. The proposed sensor was successfully applied to detect Ga（III） in real urine samples.

关键词： ion imprinted electrochemical sensor multi-walled carbon nanotubes β-cyclodextrin Ga(III)-8- hydroxyquinoline complex

Predicting vibration signals of automobile engine using chaos theory

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Science China(Physics,Mechanics & Astronomy) 2004年第z1期47卷 93-98页

作者： LIU Chun zhang Laibin WANG zhaohui School of Mechanical and Electronic Engineering University of Petroleum Beijing 102249 China School of Mechanical and Electronic Engineering University of Petroleum Beijing 102249 China School of Mechanical and Electronic Engineering University of Petroleum Beijing 102249 China

Condition monitoring and life prediction of the vehicle engine is an important and urgent problem during the vehicle development process. The vibration signals that are closely associated with the engine running condition and its development trend are complex and nonlinear. The chaos theory is used to treat the nonlinear dynamical system recently. A novel chaos method in conjunction with SVD (singular value decomposition)denoising skill are used to predict the vibration time series. Two types of time series and their prediction errors are provided to illustrate the practical utility of the method.

关键词： engine, chaos, prediction, vibration series, singular value decomposition.

Application of an Improved ISODATA Method to Pipeline Leak Detection

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Petroleum Science 2007年第2期4卷 97-104页

作者： Hu Jinqiu zhang Laibin Wang zhaohui Liang Wei School of Mechanical and Electronic Engineering China University of Petroleum Beijing 102249 China

Increasingly serious leak problem in pipeline transportation has not only affected the operation of pipelines but also caused loss of precious resource and environmental damage. Based on the analysis of the occurrence of negative pressure waves and the unsupervised learning of pattern recognition, the Interactive Self-organizing Data Analysis Technique Algorithm （ISODATA） method was used to classify the negative pressure waves and then the states of pipelines could be determined. K L transformation was used to eliminate the correlativity of feature parameters and to reduce the dimensionality of feature vector space to speed up calculation. Experimental results validated the accuracy and practical value of this method.

关键词： Negative pressure wave ISODATA leak detection K_L transformation