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Assessment of river basin habitat quality and its relationship with disturbance factors: A case study of the Tarim River Basin in Northwest China

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Journal of Arid Land 2022年第2期14卷 167-185页

作者： HE bing chang Jianxia guo Aijun WANG Yimin WANG Yan LI Zhehao State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China Xi'an University of TechnologyXi'an 710048China

The status of regional biodiversity is determined by habitat *** effective assessment of habitat quality can help balance the relationship between economic development and biodiversity ***,this study used the InVEST model to conduct a dynamic evaluation of the spatial and temporal changes in habitat quality of the Tarim River Basin in southern Xinjiang Uygur Autonomous Region of China by calc ulating the degradation degree levels for habitat types that were caused by threat factors from 1990 to 2018(represented by four periods of 1990,2000,2010 and 2018).Specifically,we used spatial autocorrelation analysis and Getis-Ord Gi*analysis to divide the study area into three heterogeneous units in terms of habitat quality:cold spot areas,hot spot areas and random *** index,population density,gross domestic product(GDP),altitude and distance from water source(DWS)were then chosen as the main disturbance *** correlation and spatial regression models were subsequently used to analyze the influences of disturbance factors on habitat *** results demonstrated that the overall level of habitat quality in the TRB was poor,showing a continuous degradation *** intensity of the negative correlation between habitat quality and Hemeroby index was proven to be strongest in cold spot areas,hot spot areas and random *** spatial lag model(SLM)was better suited to spatial regression analysis due to the spatial dependence of habitat quality and disturbance factors in heterogeneous *** analyzing the model,Hemeroby index was found to have the greatest impact on habitat quality in the studied four periods(1990,2000,2010 and2018).The research results have potential guiding significance for the formulation of reasonable management policies in the TRB as well as other river basins in arid areas.

关键词： habitat quality biodiversity InVEST model spatial heterogeneity spatial lag model human activities Tarim River Basin

Efficient and simple synthesis of B_(2)O_(3)-Al_(2)O_(3)nanocomposites assisted by deep eutectic solvent for production of 5-hydroxymethylfurfural from glucose

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Nano Research 2025年第1期18卷 236-248页

作者： Yuchen Wang Kai Rong Shanlei chang Youxing Fang Shaojun Dong State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China College of Chemistry Jilin UniversityChangchun 130012China

The catalytic conversion of glucose to high valueadded platform chemical 5-hydroxymethylfurfural(HMF)is a promising biorefinery process,and alumina-boria catalysts are considered to be green and mild solid acid catalysts for this catalytic ***,compared to the common synthesis methods with complicated steps,we reported a simple and efficient strategy to prepare B_(2)O_(3)-Al_(2)O_(3)nanocomposites by calcining cost-effective glucose-urea deep eutectic solvent(DES)solution containing the *** prepared B_(2)O_(3)-Al_(2)O_(3)nanocomposites exhibited an open three-dimensional skeleton and two-dimensional porous lamellar substructure,endowing them with a high specific surface area(228.27 m2/g).The introduction of boron changed the ratios of different aluminum species(AlⅣ,AlⅤ,and AlⅥ)and borate species(BO3 and BO4),thus further affecting the acidity and the types of acid sites of the *** prepared B_(2)O_(3)-Al_(2)O_(3)bifunctional acid catalysts possessing abundant Lewis acid sites and adjustable Brønsted acid sites showed complete glucose conversion and 55.38%of HMF yield under the optimum *** study proposed a concise method to synthesize alumina-boria solid acid catalysts assisted by glucose-urea *** hope to extend the application and prospect of this efficient and simple synthesis strategy.

关键词： 5-hydroxymethylfurfural(HMF) deep eutectic solvent glucose alumina-boria acid catalyst

Investigation on Dephosphorization of Stainless Steel

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Journal of Iron and Steel Research International 2000年第2期7卷 50-54页

作者： JIANG guo-chang guo Shu-qiang ZHANG Xiao-bing ZHUANG Yun-qian XU Kuang-di Shanghai University

The principle of the dephosphorization for stainless steels differs from that of other low alloy steels, which should not only decrease phosphorous content efficiently but also keep the concentration of Cr almost lossless. In these cases, two techniques can be selected. The strategy for oxidational dephosphorization is illustrated in terms of “the selective oxidation among elements ［Cr］, ［P］ and ［C］. So there are two critical W［C］ values. If the real W［C］ locates between these two critical values, the dephosphorization process will be optimized. The optimized region deduced theoretically coincides with the reported range very well. The experiment of reductional dephosphorization was carried out in a sealed reactor. The dephosphorization degree reached 55.4 %—78.0 % when the original phosphorous content was 0.04 %—0.05 %. The processing parameters and the way to avoid pollution were suggested. So this process seems to be possibly adopted in industrial scale.

关键词： dephosphorization stainless steels refining

Interconnections between diabetic corneal neuropathy and diabetic retinopathy:diagnostic and therapeutic implications

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Neural Regeneration Research 2025年第8期20卷 2169-2180页

作者： Mingyi Yu Faith Teo En Ning chang Liu Yu-Chi Liu Tissue Engineering and Stem Cell Group Singapore Eye Research InstituteSingapore Yong Loo Lin School of Medicine National University of SingaporeSingapore Department of Cornea and External Eye Disease Singapore National Eye CenterSingapore Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore

Diabetic corneal neuropathy and diabetic retinopathy are ocular complications occurring in the context of diabetes *** corneal neuropathy refers to the progressive damage of corneal *** retinopathy has traditionally been considered as damage to the retinal ***,growing evidence suggests that diabetic retinopathy is a complex neurovascular disorder resulting from dysfunction of the neurovascular unit,which includes both the retinal vascular structures and neural *** retinopathy is one of the leading causes of blindness and is frequently screened for as part of diabetic ocular ***,diabetic corneal neuropathy is commonly overlooked and underdiagnosed,leading to severe ocular surface *** studies have found that these two conditions tend to occur together,and they share similarities in their pathogenesis pathways,being triggered by a status of chronic *** review aims to discuss the interconnection between diabetic corneal neuropathy and diabetic retinopathy,whether diabetic corneal neuropathy precedes diabetic retinopathy,as well as the relation between the stage of diabetic retinopathy and the severity of corneal *** also endeavor to explore the relevance of a corneal screening in diabetic eyes and the possibility of using corneal nerve measurements to monitor the progression of diabetic retinopathy.

关键词： cornea corneal nerves diabetes diabetic corneal neuropathy diabetic retinopathy retina

Research Progress in Preparation and Application of Photonic Crystals

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Chinese Journal of Mechanical Engineering 2023年第3期36卷 1-17页

作者： Xiaoren Lv bing Zhong Yanfei Huang Zhiguo Xing Haidou Wang Weiling guo Xueting chang Zhinan Zhang School of Mechanical Engineering Shenyang University of TechnologyShenyang 110870China National Key Laboratory for Remanufacturing Army Armored Forces AcademyBeijing 100072China Institute of Marine Materials Science and Engineering Shanghai Maritime UniversityShanghai 200135China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Photonic crystals are periodic structural materials that have an impact on the propagation properties of *** to their excellent optical,electrical and magnetic properties,their advantages and potential for applications in the above areas are gradually ***,an increasing number of researchers have focused on photonic *** this paper,the characteristics of biological photonic crystal structures,such as those found in butterfly wings,sea mouse bristles,peacock feathers,melon jellyfish epidermal cells,and weevil exoskeletons,are *** preparation methods of photonic crystals are systematically summarized(including the template method,self-assembly technology,electron beam evaporation coating technology,chemical vapor deposition technology,femtosecond laser two-photon technology,spin coating technology,and a variety of technology mixing),and the characteristics,advantages,and disadvantages of the different methods are ***,the development of photonic crystals in the field of sensors,solar cells,filters,and infrared stealth is discussed,demonstrateing the great development potential of photonic *** is concluded that the realization of photonic crystals with high precision,high sensitivity,angle independence,and large-area uniform preparation is a key problem requiring urgent ***,photonic crystals have potential development prospects in the fields of equipment stealth,new concept weapons,production,an daily life.

关键词： Photonic crystal Preparation Application

Intercalation assisted liquid phase production of disulfide zirconium nanosheets for efficient electrocatalytic dinitrogen reduction to ammonia

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Green Energy & Environment 2023年第4期8卷 1174-1184页

作者： Yangshuo Li Huiyong Wang bing chang Yingying guo Zhiyong Li Shamraiz Hussain Talib Zhansheng Lu Jianji Wang Henan Key Laboratory of Green Chemistry Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiangHenan453007China School of Environment Henan Key Laboratory for Environmental Pollution ControlKey Laboratory for Yellow River and Huai River Water Environment and Pollution ControlMinistry of EducationHenan Normal UniversityXinxiangHenan453007China School of Physics Henan Normal UniversityXinxiangHenan453007China

Disulfide zirconium(ZrS_(2)) is a two-dimensional(2D) transition metal disulfide and has given rise to extensive attention because of its distinctive electronic structure and ***,mass production of high quality of ZrS_(2)nanosheets to realize their practical application remains a ***,we have successfully exfoliated the bulk ZrS_(2)powder with the thickness of micron into single and few-layer nanosheets through liquid-phase exfoliation in N-methylpyrrolidone(NMP) assisted via aliphatic amines as *** is found that the exfoliation yield is as high as 27.3%,which is the record value for the exfoliation of ZrS_(2)nanosheets from bulk ZrS_(2)powder,and 77.1% of ZrS_(2)nanosheets are 2-3 *** molecular geometric size and aliphatic amine basicity have important impact on the ***,the ZrS_(2)nanosheets have been used as catalyst in the electrocatalytic dinitrogen reduction with the NH3yield of 57.75 μg h^(-1)mg_(cat.)^(-1),which is twice that by ZrS_(2)nanofibers reported in literature and three times that by the bulk ZrS_(2)***,the liquid phase exfoliation strategy reported here has great potential in mass production of ZrS_(2)nanosheets for high activity electrocatalysis.

关键词： Disulfide zirconium Liquid-phase exfoliation Aliphatic amines Electrocatalytic dinitrogen reduction Ammonia

Garnet-type solid-state electrolytes:crystal structure,interfacial challenges and controlling strategies

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Rare Metals 2023年第10期42卷 3177-3200页

作者： Ting-Ting Wu Sijie guo bing Li chang-Yu Shen Xian-Hu Liu An-Min Cao National Engineering Research Center for Advanced Polymer Processing Technology Key Laboratory of Advanced Material Processing&Mold(Ministry of Education)Zhengzhou UniversityZhengzhou450002China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(CAS)Beijing100190China University of Chinese Academy of Sciences Beijing100049China

All-solid-state batteries(ASSBs) hold great promise for next-generation energy storage technologies owing to their advantage in different aspects such as energy density,safety,and wide temperature ***,the use of solid-state electrolytes(SSEs) instead of liquid ones meanwhile brings serious concerns related to the point-to-point contact between SSEs and electrodes,which is known to result in high interface resistance and inhomogeneous distribution of charges during the Li^(+)plating/stripping process,eventually leading to a premature failure of *** review focuses on the garnet-type SSEs in the formula of Li_(7)La_(3)Zr_(2)O_(12)(LLZO),and discusses the structure-performance relationship of this ceramic electrolyte in detail to achieve a clear understanding of its Li^(+)transmission ***,the challenges of cubic phase LLZO(c-LLZO) for their application in solidstate batteries(SSBs) are demonstrated by the Li/LLZO interface,which features the importance of Li metal wettability and dendrite suppression for sustainable ***,this review summarizes the recent research strategies to combat these contact issues at the Li/LLZO interface,highlighting the essential role played by surface modification of LLZO *** the obtained insights,perspectives for future research on LLZO to accelerate its potential development of SSBs in commercialized applications are also provided.

关键词： Solid-state electrolytes(SSEs) Garnet-type electrolytes Li^(+)ion conductivity Interface engineering Lithium dendrites

Structural Determination of a New La(Ⅲ) Coordination Polymer with Pseudo-merohedral Twinning Structure

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Chinese Journal of Structural Chemistry 2015年第6期34卷 938-944页

作者： ZHANG Rong-Hua ZHAO Dan LI Fei-Fei FAN Yun-chang LIU bing-guo Department of Physics and Chemistry Henan Polytechnic University

Hydrothermal reaction of benzene-1,2,4,5-tetracarboxylic （Btec） dianhydride with La203 lead to a new organometallic compound, [La2（betc）（Hbtec）（H20）3][HCONH（CH3）2] （1）. Single-crystal X-ray diffraction analysis reveals that it crystallizes in monoclinic space group P21/n that mimics orthorhombic space group Pnma （viz. pseudo-merohedral twinning structure） with a = 7.6002（16）, b = 18.954（4）, c = 18.213（4） A., β = 90.121（3）°, V= 2623.5（9） A3, Z = 4, Mr= 907.21, Dc = 2.297 g/cm3, F（000） = 1752, μ（MoKa） = 3.32 mm^-1, R = 0.0575 and wR = 0.0956. The structure of I featres a 3-D framework constructed by La（III） cations, btec^4- ligands, Hbtec^3- ligands and coordinated water molecule. All of the La（III） cations are 10-coordinated by O atoms into 1-D infinite chains, which are further interconnected by C atoms of btec ligands to form a 3-D framework.

关键词： organometallic btec pseudo-merohedral twinning

气相色谱法测定人参中十六种有机氯含量的不确定度评定

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人参研究 2020年第4期32卷 17-21页

作者：宋莹莹徐芳菲郭畅冰娄子恒曹志强吉林人参研究院吉林通化134001

目的对气相色谱法测定人参中十六种有机氯农药残留的方法进行不确定度评定。方法按照《中国药典》2015年版第一增补本人参项下有机氯类农药残留量的测定方法,对人参禁用的十六种有机氯农药进行检测,根据JJF 1059.1—2012《测量不确定度... 详细信息

目的对气相色谱法测定人参中十六种有机氯农药残留的方法进行不确定度评定。方法按照《中国药典》2015年版第一增补本人参项下有机氯类农药残留量的测定方法,对人参禁用的十六种有机氯农药进行检测,根据JJF 1059.1—2012《测量不确定度评定与表示》中有关规定,建立了不确定度评定的数学模型,对实验过程中不确定来源进行分析,并对评定过程中应注意的一些问题进行初步探讨。结果该研究测定过程所产生的测量不确定度主要来源于回收率和重复性试验,其他因素影响很小,在实验过程中应给予格外重视并加以控制。结论本评估方法可为气相色谱法检测多组分农药残留量的不确定度评估提供依据。

关键词：气相色谱仪人参不确定度