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Lipid droplets in the nervous system:involvement in cell metabolic homeostasis

Neural Regeneration Research 2025年第3期20卷 740-750页

作者： Yuchen Zhang Yiqing Chen Cheng Zhuang Jingxuan Qi Robert Chunhua Zhao Jiao Wang school of Life Sciences Shanghai UniversityShanghaiChina school of Medicine Shanghai UniversityShanghaiChina Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic MedicinePeking Union Medical CollegeBeijingChina Center of Excellence in Tissue Engineering Chinese Academy of Medical SciencesBeijingChina Beijing Key Laboratory of New Drug development and Clinical Trial of Stem Cell Therapy BeijingChina

Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous *** droplet formation begins with the synthesis of neutral lipids in the endoplasmic ***,lipid droplets were recognized for their role in maintaining lipid metabolism and energy homeostasis;however,recent research has shown that lipid droplets are highly adaptive organelles with diverse functions in the nervous *** addition to their role in regulating cell metabolism,lipid droplets play a protective role in various cellular stress ***,lipid droplets exhibit specific functions in neurons and glial *** of lipid droplet formation leads to cellular dysfunction,metabolic abnormalities,and nervous system *** review aims to provide an overview of the role of lipid droplets in the nervous system,covering topics such as biogenesis,cellular specificity,and ***,it will explore the association between lipid droplets and neurodegenerative *** the involvement of lipid droplets in cell metabolic homeostasis related to the nervous system is crucial to determine the underlying causes and in exploring potential therapeutic approaches for these diseases.

关键词： Alzheimer's disease lipid droplet biogenesis lipid droplets lipid metabolism nervous system neurodegenerative disorders oxidative stress Parkinson's disease

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Multifunctional landscapes—perspectives for the future

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Journal of Environmental Sciences 2003年第2期15卷 187-192页

作者： Jesper Brandt Department of geography and International development Studies Roskilde University

New methods in landscape ecology to study the link between landscape heterogeneity and landscape functionality are needed. Heterogeneity is a basic characteristic of landscape, and landscape function is the capacity to change the structural heterogeneity of a landscape system. In most developed countries the industrialisation of agriculture has in general resulted in a change of agricultural landscapes from a small-grained heterogeneous pattern towards more monotonous and monofunctional landscapes. During the 1990's this trends seems to have changed due to a diversification of rural land use and new trends in urbanisation. Weather these phases of landscape development should be expected in developing countries is a totally open question. Dealing with the study of multifunctionality of landscapes it is proposed to distinguish between ecological functionality of landscape ecosystems, functionality pertaining to land use and social functionality. Further, the relation between function, space and scale is important by the determination of spatial and time segregation as well as spatial and time integration of multifunctionality in landscapes.

关键词： landscape heterogeneity monotonisation multifunctionality spatial segregation time segregation landscape development

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Biosurfactants as a Biological Tool to Increase Micronutrient Availability in Soil: A Review

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Pedosphere 2018年第2期28卷 170-189页

作者： Ratan SINGH Bernard R.GLICK Dheeraj RATHORE school of Environment and sustainable development Central University of Gujarat Department of Biology University of Waterloo

Addressing micronutrient deficiencies in agricultural soils to meet the growing demands of crops is a matter of great concern *** use of biosurfactant,a multifunctional microbial metabolite,to enhance nutrient availability may be a sustainable way of enhancing agricultural *** are generally less toxic than synthetic *** application of biosurfactants in agricultural soils is anticipated to improve nutrient status,increase wettability,and achieve a more even dissemination of complex *** studies have evaluated the influence of biosurfactants on bioremediation,antimicrobial activity,and soil flushing *** manuscript reviews the possibility of employing biosurfactants to mobilize and solubilize soil nutrients and make them available to plants through the formation of metal-biosurfactant *** significant progress regarding an explanation of the mechanisms behind many biosurfactant-induced effects has been made,there are still many aspects of this area that are not sufficiently elucidated,such as differences in specificity for nutrients(e.g.,Cu,Fe,Mn,and Zn)and toxins(e.g.,Cd and Pb).Biosurfactants from various isolates have been considered for their potential role in plant growth promotion and other applications related to improving the effectiveness of agricultural soils.

关键词： critical micelle concentration micelle formation microbial metabolite microbial isolate micronutrient deficiency soilmetal bioavailability

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Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai Li Zhen Ma Jin-Hua Gao school of Science Hebei University of Science and Technology school of Electronics and Information Zhengzhou University of Light Industry school of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

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Networks of hiking tourist trails in the Krkono?e(Czech Republic) and Peneda-Gerês(Portugal) national parks-comparative analysis

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Journal of Mountain Science 2019年第4期16卷 725-743页

作者： Krzysztof KO?ODZIEJCZYK Department of Regional geography and Tourism Institute of Geography and Regional Development University of Wroclaw

Tourist trails as a linear form of tourist infrastructure fulfill various functions(i.e. recreational, ecological, economic, social, ensuring safety). They are especially important in national parks, where in selected areas tourist penetration is allowed only along specially designed, official routes. A well-planned layout of tourist trails with appropriate facilities can help to limit the negative consequences of tourist pressure on protected natural areas. The aim of the article is a comparison of offers for active tourists in two mountain national parks(the Krkono?e National Park in the Czech Republic and the Peneda-Gerês National Park in Portugal), taking into consideration the marked hiking trails – the most frequently used type of tourist trails. As a result the level of area coverage by the networks of hiking trails was assessed, as well as their adequateness towards the needs of tourists. The descriptive analysis was based on author's personal observations. In the examination of hiking trails as part of a system, some elements of the graph theory were used, especially coefficients for topologic analysis of spatial structure. This method enables simplification of a network, comparison of various areas and making some assumptions concerning tourist infrastructure, which is a crucial factor while analyzing trails from a tourists' point of view. In both analyzed national parks the relief is quite similar, as well as their locations near national borders, what justifies the choice of the areas scrutinized in the paper. What differ them are patterns of tourism development and the current ways of undertaking active tourism. Not similarities but the two latter factors resulted in a distinct character of the two compared networks of trails and facilities connected with them. The system of hiking trails and tourist infrastructure seem better developed in the Krkono?e National Park, what can be explained by historical and social conditions, especially the adopted model

关键词： Hiking tourist trails Tourist infrastructure Mountains National parks Network Graph analysis

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Exploring willingness-to-pay for the restoration and maintenance of reserved forests in the Greater Accra Region of Ghana

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Forest Ecosystems 2022年第4期9卷 439-448页

作者： Anthony Amoah Adusei Jumah Kofi Korle school of sustainable development University of Environment and Sustainable DevelopmentSomanyaGhana&Africa Centre for Economics and Policy Research(ACAEP)Ghana Department of Economics Central UniversityAccraGhana

In recent years, debates on the alarming rate of forest depletion emanating from growth in urban settlement and changed urban land-use patterns have gained prominence across the globe. The present study adopts a demandside management approach to investigate household’s willingness-to-pay for the restoration and maintenance of protected forest reserves in three municipalities in Ghana. Using survey data of 733 households from the Greater Accra Region of Ghana, we model the demand for forest restoration and maintenance, respectively, by means of the contingent valuation technique. As part of the findings, the study shows evidence that a household is willing to pay Gh￠50.99($8.67) and Gh￠31.12($5.29) per annum to restore and maintain the protected forests,respectively. These amounts constitute less than one percent of the average household income per ***, critical validity tests are conducted to validate the robustness of the results. This study provides willingness-to-pay estimates for forest and forest resources, and its associated determinants. These estimates seek to bridge the information gap and inform policy decisions toward the overarching aim of ensuring sustainable forest management in Ghana.

关键词： Reserved forest Restoration Maintenance Tobit model Willingness-to-pay CVM

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Quantification of irrigation water transport processes in ZiZiphus jujuba garden using water stable isotopes

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Journal of Mountain Science 2024年第10期21卷 3263-3274页

作者： ZHONG Xiaofei ZHANG Mingjun CHE Cunwei LIU Zechen LI Beibei ZHANG Yuanyuan College of geography and Environmental Science Northwest Normal UniversityLanzhou 730000China Key Laboratory of Resource Environment and sustainable development of Oasis Lanzhou 730000China

ZiZiphus jujuba,which is native to China,has become one of the main crops widely planted in the western Loess Plateau because of its drought and flood-tolerance,adaptability,and higher nutritional value of the *** irrigation water infiltration in *** gardens is complex,and understanding its mechanisms is essential for efficient water use and sustainable *** knowledge helps ensure the long-term success of jujuba *** paper describes a field experiment that investigates the infiltration process of irrigation water from *** garden and quantifies the contribution of irrigation water to soil water at different depths using the MixSIAR *** to the FC(Field water holding Capacity)of ***,irrigation experiments with three volumes of 80%FC,60%FC,and 40%FC are set up in this *** study finds that water retention is better in *** garden soils with a higher proportion of coarse gravel in the soil particle *** water content exhibits a gradient change after irrigation,with deeper wetting front transport depth observed with increased irrigation ***,there is correlation between soil temperature and soil water *** soil water in *** garden generally exhibits a preferential flow signal in the 0-40 cm *** 40 cm,a piston flow pattern *** rate of soil water infiltration increases with the amount of irrigation *** the 0-40 cm range of the soil vertical profile,irrigation water was the main contributor to soil *** demonstrated flexibility in water uptake,primarily absorbing soil water at depths of 0-40 *** optimal growth of *** at this stage,40%FC irrigation is *** results are expected to be valuable future irrigation practices and land use planning for *** garden in arid zones,supporting sustainable agricultural development and water management.

关键词： Water stable isotopes Different irrigation volumes ZiZiphus jujuba Irrigation water infiltration process MixSIAR model

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Evaluating the soil evaporation loss rate in a gravel-sand mulching environment based on stable isotopes data

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Journal of Arid Land 2022年第8期14卷 925-939页

作者： YANG Ye ZHANG Mingjun ZHANG Yu WANG Shengjie WANG Jiaxin College of geography and Environmental Science Northwest Normal UniversityLanzhou 730070China Key Laboratory of Resource Environment and sustainable development of Oasis Lanzhou 730070China

In order to cope with drought and water shortages,the working people in the arid areas of Northwest China have developed a drought-resistant planting method,namely,gravel-sand mulching,after long-term agricultural *** understand the effects of gravel-sand mulching on soil water evaporation,we selected Baifeng peach(Amygdalus persica L.)orchards in Northwest China as the experimental field in *** on continuously collected soil water stable isotopes data,we evaluated the soil evaporation loss rate in a gravel-sand mulching environment using the line-conditioned excess(lc-excess)coupled Rayleigh fractionation model and Craig-Gordon *** results show that the average soil water content in the plots with gravel-sand mulching is 1.86%higher than that without gravel-sand *** monthly variation of the soil water content is smaller in the plots with gravel-sand mulching than that without gravel-sand ***,the average lc-excess value in the plots without gravel-sand mulching is *** addition,the soil evaporation loss rate in the plots with gravel-sand mulching is lower than that in the plots without gravel-sand *** lc-excess value was negative for both the plots with and without gravel-sand mulching,and it has good correlation with relative humidity,average temperature,input water content,and soil water *** effect of gravel-sand mulching on soil evaporation is most prominent in *** with the evaporation data of similar environments in the literature,the lc-excess coupled Rayleigh fractionation model is *** isotopes evidence shows that gravel-sand mulching can effectively reduce soil water evaporation,which provides a theoretical basis for agricultural water management and optimization of water-saving methods in arid areas.

关键词： soil evaporation loss rate gravel-sand mulching stable isotopes line-conditioned excess coupled Rayleigh fractionation model Craig-Gordon model

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Effects of water regime, crop residues, and application rates on control of Fusarium oxysporum ***

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Journal of Environmental Sciences 2015年第5期27卷 30-37页

作者： Teng Wen Xinqi Huang Jinbo Zhang Tongbin Zhu Lei Meng Zucong Cai school of geography Sciences Nanjing Normal University Jiangsu Center for Collaborative Innovation in Geographical Information Resource development and Application State Key Laboratory of Soil and sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences College of Agriculture Hainan University

Biological soil disinfestation is an effective method to control soil-borne disease by flooding and incorporating with organic amendments, but field conditions and resources sometimes limited its practical application. A laboratory experiment was conducted to develop practice guidelines on controlling Fusarium wilt, a widespread banana disease caused by Fusarium oxysporum f. sp. cubense（FOC）. FOC infested soil incorporated with rice or maize straw at rates of 1.5 tons/ha and 3.0 tons/ha was incubated under flooded or water-saturated（100% water holding capacity） conditions at 30℃ for 30 days. Results showed that FOC populations in the soils incorporated with either rice or maize straw rapidly reduced more than 90% in the first 15 days and then fluctuated till the end of incubation, while flooding alone without organic amendment reduced FOC populations slightly. The rapid and dramatic decrease of redox potential（down to- 350 m V） in straw-amended treatments implied that both anaerobic condition and strongly reductive soil condition would contribute to pathogen inactivation. Water-saturation combined with straw amendments had the comparable effects on reduction of FOC, indicating that flooding was not indispensable for inactivating FOC. There was no significant difference in the reduction of FOC observed in the straw amendments at between 1.5 and 3 tons/ha. Therefore,incorporating soil with straw（rice or maize straw） at a rate of 3.0 tons/ha under 100%water holding capacity or 1.5 tons/ha under flooding, would effectively alleviate banana Fusarium wilt caused by FOC after 15-day treating under 30℃.

关键词： Biological soil disinfestation Banana Fusarium wilt Organic amendments Water regime treatment duration Treatment duration

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Does ash dieback affect the reproductive ecology of Fraxinus excelsior L.?

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Journal of Forestry Research 2024年第2期35卷 54-69页

作者： Anna‑Katharina Eisen Lisa Buchner Barbara Fussi Susanne Jochner‑Oette Physical geography/Landscape Ecology and sustainable Ecosystem development Catholic University of Eichstätt-Ingolstadt85072 EichstättGermany Bavarian Office for Forest Genetics(AWG) 83317 TeisendorfGermany

Forest tree species reproduction is a key factor in maintaining the genetic diversity of future generations and the stability of forest *** ongoing ash dieback disease could affect the reproductive ecology of Fraxinus excelsior *** have a major impact on the quantity and quality of pollen and *** this study,we investigated pollen production and viability of pollen and seeds of ash trees with different health status from 2018 to *** were collected from 105 trees(pollen production),pollen from 125 trees(pollen viability),and seeds from 53 trees(seed quality)in two seed orchards and in one floodplain forest in southern *** all parameters were examined at every site every *** average pollen production per tree was estimated at 471.2±647.9 billion pollen *** addition,we found that a high number of inflorescences did not equate to high pollen production per *** production of healthy and diseased trees did not differ significantly,although only 47%of severely diseased male trees(vs.72%for healthy trees)produced *** regards to pollen viability,the TTC test showed an average viability of 73%±17%.Overall,there was a slight tendency for diseased trees to have less viable ***,a significant difference could only be calculated for trees in the floodplain *** percentage of germinable seeds in 2018 was 38%in the floodplain forest and 57%in one of the seed *** percentage of viable seeds(TTC test)ranged from 17 to 22%in the orchards in ***-viable seeds were usually heavily infested by *** general,seed quality was not significantly different between healthy and diseased *** results indicate that ash dieback affects flower formation and pollen viability but not pollen production or seed ***,the fact that hardly any flowering was observed,especially for trees that were seriously affected,suggests a negative effect of ash dieback on reproductive per

关键词： Common ash Seed orchard Floodplain forest Pollen production Viability TTC test Seed stratification Phenology

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