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Journal of Environmental Sciences 2024年第3期137卷 604-614页

作者： Di Wu Xing Lu Li-Xue Dong Juan Tian Jin Deng Lei Wei Hua Wen Shan Zhong Ming Jiang School of Basic Medical Sciences Wuhan UniversityWuhan 430071China Key Laboratory of Freshwater Biodiversity conservation Ministry of Agriculture and Rural AffairsYangtze River Fisheries Research InstituteChinese Academy of Fishery SciencesWuhan 430223China Hubei Province Key Laboratory of Allergy and Immunology Wuhan 430071China

Microplastics(MPs)have become a significant concern for their potential ***,the correlation between the size of plastic particles and their toxicity remains ***,we investigate the toxic effects of different sizes(80 nm,800 nm,8μm and 80μm)polystyrene MPs(PS-MPs)on the model organism Nile tilapia(Oreochromis niloticus).The results of bioluminescent imaging indicate that the 80 nm PS-MPs are more likely to invade the body.H&E staining shows severe damage on the intestinal villi and distinct hepatic steatosis in the 80 nm *** U labeling shows that the proliferation activity of intestinal and liver cells reduces significantly in the 80 nm *** gut microbiome analysis shows a severe imbalance of gut microbiota homeostasis in the 80 nm *** analysis of liver transcriptomics and metabolomics shows that the liver lipid metabolism is disordered in the 80 nm *** conclusion,this study confirms that the 80 nm PS-MPs are more likely to induce intestinal and liver *** the above lay the foundation for further study on the pathological damage of MPs to other organisms.

关键词： Microplastics(MPs) Intestinal toxicity Liver toxicity Gut microbiome Lipid metabolism

Magnetic resonance imaging findings of radiation-induced breast angiosarcoma:A case report

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World Journal of Clinical Cases 2024年第13期12卷 2237-2242页

作者： Wen-Pei Wu Chih-Wei Lee Department of Medical imaging Changhua Christian HospitalChanghua 50006Taiwan Department of Radiology Changhua Christian Medical Foundation Changhua Christian HospitalChanghua 50006Taiwan

BACKGROUND Breast conservation surgery(BCS)with adjuvant radiotherapy has become a gold standard in the treatment of early-stage breast cancer,significantly reducing the risk of tumor ***,this treatment is associated with adverse effects,including the rare but aggressive radiation-induced angiosarcoma(RIAS).Despite its rarity and nonspecific initial presentation,RIAS presents a challenging diagnosis,emphasizing the importance of imaging techniques for early detection and accurate *** SUMMARY We present a case of a 48-year-old post-menopausal woman who developed skin ecchymosis on the right breast seven years after receiving BCS and adjuvant radiotherapy for breast *** mammography and ultrasound were inconclusive,showing post-treatment changes but failing to identify the underlying ***-enhanced breast magnetic resonance imaging(MRI)revealed diffuse skin thickening and nodularity with distinctive enhan-cement kinetics,leading to the diagnosis of *** case highlights the crucial role of MRI in diagnosing and determining the extent of RIAS,facilitating timely and appropriate surgical *** Breast MRI is crucial for detecting RIAS,especially when mammography and ultrasound are inconclusive.

关键词： Radiation-induced angiosarcoma Radiotherapy Breast conserving surgery Breast cancer Magnetic resonance imaging Case report

Impacts of climate change and human activities on vegetation dynamics on the Mongolian Plateau, East Asia from 2000 to 2023

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Journal of Arid Land 2024年第8期16卷 1062-1079页

作者： YAN Yujie CHENG Yiben XIN Zhiming ZHOU Junyu ZHOU Mengyao WANG Xiaoyu School of Soil and Water conservation Beijing Forestry UniversityBeijing 100083China Experimental Center of Desert Forestry Chinese Academy of ForestryDengkou 015200China Inner Mongolia Dengkou Desert Ecosystem National Observation Research Station National Forestry and Grassland AdministrationDengkou 015200China

The Mongolian Plateau in East Asia is one of the largest contingent arid and semi-arid areas of the *** the impacts of climate change and human activities,desertification is becoming increasingly severe on the Mongolian *** the vegetation dynamics in this region can better characterize its ecological *** this study,based on Moderate Resolution imaging Spectroradiometer(MODIS)images,we calculated the kernel normalized difference vegetation index(kNDVI)on the Mongolian Plateau from 2000 to 2023,and analyzed the changes in kNDVI using the Theil-Sen median trend analysis and Mann-Kendall significance *** further investigated the impact of climate change on kNDVI change using partial correlation analysis and composite correlation analysis,and quantified the effects of climate change and human activities on kNDVI change by residual *** results showed that kNDVI on the Mongolian Plateau was increasing overall,and the vegetation recovery area in the southern region was significantly larger than that in the northern *** 50.99%of the plateau showed dominant climate-driven effects of temperature,precipitation,and wind speed on kNDVI *** analysis showed that climate change and human activities together contributed to 94.79%of the areas with vegetation *** human activities promoted the recovery of local vegetation,and climate change inhibited vegetation growth in the northern part of the Mongolian *** study provides scientific data for understanding the regional ecological environment status and future changes and developing effective ecological protection measures on the Mongolian Plateau.

关键词： kernel normalized difference vegetation index(kNDVI) human activities climate change partial correlation analysis composite correlation analysis residual analysis Mongolian Plateau

imaging of the treated breast post breast conservation surgery/oncoplasty: Pictorial review

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World Journal of Radiology 2017年第8期9卷 321-329页

作者： Subhash K Ramani Ashita Rastogi Abhishek Mahajan Nita Nair Tanuja Shet Meenakshi H Thakur Department of Radiodiagnosis JJ Hospital Department of Radiodiagnosis and imaging Tata Memorial Centre Department of Surgical Oncology Tata Memorial Centre Department of Pathology Tata Memorial Centre

Mammographic appearance of the normal breast is altered in the post-operative setting. It is essential to be aware of the normal findings as well as to identify features of recurrent disease with particular emphasis on radiologicalpathological concordance. Digital breast tomosynthesis and volumetric breast density add incremental value in this clinical setting. We present a pictorial review of various cases to illustrate normal post-operative findings as well as mammographic features suspicious for recurrent disease.

关键词： Mammography Digital breast tomosynthesis Breast conservation surgery Post breast-conserving therapy imaging Breast cancer

Dryland agriculture and rangeland restoration priorities in Afghanistan

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Journal of Arid Land 2015年第3期7卷 391-402页

作者： Michael J JACOBS Catherine A SCHLOEDER Philip D TANIMOTO Texas Agri Life Research Department of Ecosystem Science & Management2138TAMUCollege StationTX 77843-2138USA Oikos Services LLCFortineMT 59918USA conservation imaging Inc.AuburndaleMassachusetts 02466USA

Afghanistan is threatened by rangeland degradation.A quantitative visual analysis of Google Earth Imagery was used to systematically locate,characterize and quantify the current extent of rangelands in Afghanistan degraded as a consequence of dryland *** data were used in conjunction with dryland agriculture locations to establish a climate envelope comprised by temperature and mean annual precipitation to create a geographical mask known to contain dryland *** this mask we created a grid of 100 km2 cells that we analyzed individually to access dryland agriculture *** limits to sustainable dryland agriculture and areas of high restoration priority were also assessed as was the distribution of rain-fed agriculture with respect to the location of traditional migration routes for extensive livestock *** extents of agriculture in Afghanistan,at both upper and lower elevations,correlated most closely with mean annual temperature（MAT） at the upper elevation limits,and with mean annual precipitation（MAP） at the lower elevation *** total,dryland agriculture comprised 38,980 km2 of former native *** was highest in the northwestern,northern and northeastern provinces of Herat,Badghis,Faryab,Jawzjan,Sar-e-Pul,Samangan,Balkh,Baghlan,Kunduz,Takhar and Badakhshan,with the highest percentage of conversion occurring in *** MAP value of 〈400 mm is perceived by farmers as the current climatic limit to sustainable dryland agriculture across the northern regions of the *** this MAP value,approximately 27,677 km2 of converted rangeland met the need for restoration *** projections indicate that Afghanistan will become warmer and drier in the coming *** consequence of this trend is that the MAP threshold of 〈400 mm to sustainable dryland agriculture will become obsolete in the coming *** of currently converted rangelands is needed to restore critical grazing area

关键词： degradation climatic trends extensive livestock production dryland agriculture rangeland restoration

Magnetic Resonance imaging Study on the Miscibility of a CO_(2)/n-Decane System

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Chinese Physics Letters 2011年第9期28卷 209-212页

作者： SONG Yong-Chen ZHU Ning-Jun LIU Yu ZHAO Jia-Fei LIU Wei-Guo ZHANG Yi ZHAO Yue-Chao JIANG Lan-Lan Key Laboratory of Ocean Energy Utilization and Energy conservation of Ministry of Education Dalian University of TechnologyDalian 116024

We provide a feasible method to estimate the minimum miscibility pressure(MMP)of a CO_(2)/n−decane system by using high spatial resolution magnetic resonance imaging(MRI).During the measurement,the signal intensity of n-decane with CO_(2) dissolved is *** MRI images show that the signal intensity of n−decane decreases to zero and the interface disappears at the MMP.A good exponential growth relation is found between the signal intensity and the pressure of the CO_(2)/n−decane *** relationship between the MMP and the temperature is established quantitatively,which is in close agreement with previous *** it could be used to predict the MMP of the CO_(2)/n-decane system.

关键词： exponential dissolved quantitatively

In-situ observation for formation and dissociation of carbon dioxide hydrate in porous media by magnetic resonance imaging

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Science China Earth Sciences 2013年第4期56卷 611-617页

作者： CHENG ChuanXiao ZHAO JiaFei SONG YongChen ZHU ZiHao LIU WeiGuo ZHANG Yi YANG MingJun YU XiChong Key Laboratory of Ocean Energy Utilization and Energy conservation of Ministry of Education Dalian University of Technology CNOOC Research Center

The study of formation and dissociation of CO 2 hydrate in porous media was characterized by magnetic resonance imaging (MRI) system in in situ conditions. This work simulated porous media by using glass beads of uniform size. The growth and dissociation habit of CO2 hydrate was observed under different temperature and pressure conditions. The induction time and the hydrate saturation during the growth and dissociation process in different sizes of porous media were obtained by using the MRI signal intensity. The results indicate that hydrate growth rate and the induction time are affected by the size of porous media, pressure, and degree of supercooling. There are three hydrate growth stages, i.e., initial growth stage, rapid growth stage and steady stage. In this study,the CO2 hydrate forms preferentially at the surface of vessel and then gradually grows inward. The hydrate tends to cement the glass beads together and occupies the pore gradually. As the hydrate decomposes gradually, the dissociation rate increases to the maximum and then decreases to zero.

关键词： magnetic resonance imaging carbon dioxide hydrate porous media saturation induction time growth and dissocia- tion rate

Visualization of CO_2 and oil immiscible and miscible flow processes in porous media using NMR micro-imaging

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Petroleum Science 2011年第2期8卷 183-193页

作者： Zhao Yuechao SongYongchen Liu Yu Jiang Lanlan Zhu Ningjun Key Laboratory of Ocean Energy Utilization and Energy conservation of the Ministry of Education Dalian University ofTechnology Dalian Liaoning 116024 China

CO2 flooding is considered not only one of the most effective enhanced oil recovery （EOR） methods, but also an important alternative for geological CO2 storage. In this paper, the visualization of CO2 flooding was studied using a 400 MHz NMR micro-imaging system. For gaseous CO2 immiscible displacement, it was found that CO2 channeling or fingering occurred due to the difference of fluid viscosity and density. Thus, the sweep efficiency was small and the final residual oil saturation was 53.1%. For supercritical CO2 miscible displacement, the results showed that piston-like displacement occurred, viscous fingering and the gravity override caused by the low viscosity and density of the gas was effectively restrained, and the velocity of CO2 front was uniform. The sweep efficiency was so high that the final residual oil saturation was 33.9%, which indicated CO2 miscible displacement could enhance oil recovery more than CO2 immiscible displacement. In addition, the average velocity of CO2 front was evaluated through analyzing the oil saturation profile. A special core analysis method has been applied to in-situ oil saturation data to directly evaluate the local Darcy phase velocities and capillary dispersion rate.

关键词： NMR micro-imaging porous media CO2 flooding enhanced oil recovery saturation

Measurement of Fluid Flow in Pipe and Porous Media by High-Resolution Magnetic Resonance imaging

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China Ocean Engineering 2012年第2期26卷 317-328页

作者：蒋兰兰宋永臣刘瑜豆斌林朱宁军赵佳飞 BULITI Abudul baKey Laboratory of Ocean Energy Utilization and Energy conservation of Ministry of Education Dalian University ofTechnology North Japan New Energy Research Center Hirosaki University

The objective of this study is to understand the process of fluid flow in pipe and porous media with different pore structures. High-resolution Magnetic Resonance imaging （MRI） technique was used to visualize the pore structure and measure fluid flow. The porous media was formed by packed bed of glass beads. Flow measurement was carried out by a modified spin echo sequence. The results show that the velocity distribution in pipe is annular and the linear relation between MRI velocity and actual velocity is found in pipe flow measurement. The flow distribution in porous media is rather heterogeneous, and it is consistent with heterogeneous pore structure. The flow through pores with the high volume flow rate is determined largely by geometrical effects such as pore size and cross-sectional area.

关键词： MRI pore structure velocity distribution pipe flow porous media

Nondestructive testing and assessment of consolidation effects of earthen sites

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Journal of Rock Mechanics and Geotechnical Engineering 2016年第5期8卷 726-733页

作者： Xudong Wang Qinglin Guo Shanlong Yang Dexuan Zhang Yanwu Wang National Research Center for conservation of Ancient Wall Paintings and Earthen Sites Dunhuang736200China Key Laboratory for the conservation of Ancient Wall Paintings and Earthen Sites in Gansu Province Dunhuang736200China Dunhuang Academy Dunhuang 736200China Shanghai Jiao Tong University Shanghai 200240China

Earthen sites are widely distributed throughout China, and most of them belong to archaeological sites with significant values, which not only directly witness the origin, formation and development of Chinese civilization, but also possess important values for conservation and exhibition. Many researches and practices on their conservation and consolidation have been carried out; however, the consolidation effect is mainly judged by visual observation and expert evaluation. Scientific assessment of conservation and consolidation effects is a challenging issue. Many instruments in other fields cannot be directly applied to the conservation of cultural relics due to their peculiarity. In order to assess the effects of field conservation experiments, this paper tries to understand the consolidation effects at Liangzhu site using nondestructive or micro-damage methods, including thermo-physical parameters testing, infrared thermal imaging, high-density microelectrode resistivity testing, portable microscope observation, and hydrophilic and hydrophobic testing, and thereby explores the practicable methods for evaluating the properties of consolidation materials for earthen sites treatment.

关键词： Earthen sites Nondestructive methods Infrared thermal imaging High-density microelectrode resistivity Portable microscope Hydrophilic and hydrophobic testing