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Joule-heated carbonized melamine sponge for high-speed absorption of viscous oil spills

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Nano Research 2021年第8期14卷 2697-2702页

作者： Lu-An Shi Jin Ge bi-cheng Hu Tao Ma Haoyu Zhao Yong-Hong Song Chao Li Shu-Hong Yu Division of Nanomaterials and Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleDepartment of ChemistryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsUniversity of Science and Technology of ChinaHefei 230026China

Introducing heating function to oil sorbents opens up a new pathway to the fast cleanup of viscous crude oil spills in *** oil sorption speed increases with the rise of the temperature,thus oil sorbents with high heating temperature are ***,the oil sorbents also need to be produced *** we present carbonized melamine-formaldehyde sponges(CMSs)that exhibited superior heating performance and the CMSs could be massively fabricated through a non-polluting pyrolysis *** conductive CMSs could be heated over 300℃with a low applied voltage of 6.9 V and keep above 250℃for 30 min in the air without obvious *** high heating performance enabled heating up the oil spills with a high rate of 2.65℃·s^(-1) and 14%improvement of oil sorption coefficient compared with the state-of-the-art *** demonstrated that one joule-heated CMS could continuously and selectively collect viscous oil spills(9,010 mPa·s)690 times its own weight in one *** CMSs will be a highly competitive sorbent material for the fast remediation of future crude oil spills.

关键词： joule-heat melamine sponge crude oil viscosity hydrophobic/oleophilic

基于经颅微电流刺激疗法的可穿戴助眠设备对睡眠潜伏期影响的研究

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中国医疗器械信息 2024年第17期30卷 48-51页

作者：周俊韦新华刘浩然韩璧丞浙江强脑科技有限公司浙江杭州311121

目的:探讨基于经颅微电流刺激疗法的助眠仪对改善睡眠潜伏期的功效。方法:共纳入241名年龄在18~80岁,至少使用助眠仪4周的用户进行观察研究。用户的入睡信息由助眠仪通过设备端采集生理信号计算后发送至数据中心用于分析。结果:经统计,7... 详细信息

目的:探讨基于经颅微电流刺激疗法的助眠仪对改善睡眠潜伏期的功效。方法:共纳入241名年龄在18~80岁,至少使用助眠仪4周的用户进行观察研究。用户的入睡信息由助眠仪通过设备端采集生理信号计算后发送至数据中心用于分析。结果:经统计,79.8%入睡困难受试者在使用2周后,与第1周相比睡眠潜伏期有所缩短。用户的平均睡眠潜伏期从第1周(46.40±1.71)min降至第4周(34.22±1.46)min。结论:用户使用该设备前后,睡眠潜伏期出现显著变化,与用户的年龄、性别无直接关联关系。

关键词：失眠经颅微电流刺激疗法睡眠潜伏期

Automatically building large-scale named entity recognition corpora from Chinese Wikipedia

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Frontiers of Information Technology & Electronic Engineering 2015年第11期16卷 940-956页

作者： Jie ZHOU bi-cheng LI Gang CHEN Department of Signal Analysis and Information Processing Zhengzhou Information Science and Technology Institute

Named entity recognition （NER） is a core component in many natural language processing applications. Most NER systems rely on supervised machine learning methods, which depend on time-consuming and expensive annotations in different languages and domains. This paper presents a method for automatically building silver-standard NER corpora from Chinese Wikipedia. We refine novel and language-dependent features by exploiting the text and structure of Chinese Wikipedia. To reduce tagging errors caused by entity classification, we design four types of heuristic rules based on the characteristics of Chinese Wikipedia and train a supervised NE classifier, and a combined method is used to improve the precision and coverage. Then, we realize type identification of implicit mention by using boundary information of outgoing links. By selecting the sentences related with the domains of test data, we can train better NER models. In the experiments, large-scale NER corpora containing 2.3 million sentences are built from Chinese Wikipedia. The results show the effectiveness of automatically annotated corpora, and the trained NER models achieve the best performance when combining our silver-standard corpora with gold-standard corpora.

关键词： NER corpora Chinese Wikipedia Entity classification Domain adaptation Corpus selection

Therapeutic effects of adipose-derived stem cells-based microtissues on erectile dysfunction in streptozotocin-induced diabetic rats

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Asian Journal of Andrology 2017年第1期19卷 91-97页

作者： Feng Zhou Hua Xin Yong-De Xu Hong-En Lei bi-cheng Yang Rui-Li Guan Meng Li Jian-Quan Hou Zhong-cheng Xin Molecular biology Laboratory of Andrology Center Peking University First Hospital Peking University Beijing 100034 China Department of Urology First Affiliated Hospital of Soochow University Soochow University Suzhou 215006 China Department of Ophthalmology Beijing Chao-Yang Hospital Capital Medical University Beijing 100043 China Department of Urology General Hospital of Ningxia Medical University Ningxia Medical University Ningxia 750021 China

This study aimed to explore the therapeutic effects of adipose-derived stem cells （ADSCs）-based microtissues （MTs） on erectile dysfunction （ED） in streptozotocin （STZ）-induced diabetic rats. Fifty-six 8-week-old Sprague-Dawley rats received intraperitoneal injection of STZ （60 mg kg-1）, and 8 weeks later, the determined diabetic rats randomly received intracavernous （IC） injection of phosphate buffer solution （PBS）, ADSCs, or MTs. Another eight normal rats equally got IC injection of PBS. MTs were generated with a hanging drop method, and the injected cells were tracked in ADSC- and MT-injected rats. Four weeks after the treatments, intracavernous pressure （ICP）, histopathological changes in corpus cavernosum （CC）, and functional proteins were measured. Rat cytokine antibody array was used to detect ADSCs or MTs lysate. The results showed that MTs expressed vascular endothelial growth factor （VEGF）, nerve growth factor （NGF）, and tumor necrosis factor-stimulated gene-6 （TSG-6）. MTs injection had a higher retention than ADSCs injection and MTs treatment improved ICP, neuronal nitric oxide synthase （nNOS） expression, smooth muscle, and endothelial contents in diabetic rats, ameliorated local inflammation in CC better. Thus, our findings demonstrate that IC injection of MTs improves erectile function and histopathological changes in STZ-induced diabetic rats and appears to be more promising than traditional ADSCs. The underlying mechanisms involve increased cell retention accompanied with neuroprotection and anti-inflammatory behaviors of the paracrine factors.

关键词： adipose-derived stem cells diabetes erectile dysfunction microtissues paracrine factors

Effects of physiological integration on defense strategies against herbivory by the clonal plant Alternanthera philoxeroides

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Journal of Plant Ecology 2019年第4期12卷 662-672页

作者： Rubén Portela bi-cheng Dong Fei-Hai Yu Rodolfo Barreiro Sergio R.Roiloa bioCost Group Biology DepartmentUniversidade da CoruñaA Coruña 15071Spain School of Nature Conservation Beijing Forestry UniversityBeijing 100083China Institute of Wetland Ecology&Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou UniversityTaizhou 318000China

Aims The plant-herbivore interaction is one of the most fundamental inter-actions in *** are sessile organisms,and consequently rely on particular strategies to avoid or reduce the negative impact of ***,we aimed to determine the defense strategies against insect herbivores in the creeping invasive plant Alternanthera *** We tested the defense response of *** to herbivory by a leaf-feeding specialist insect Agasicles hygrophila and a pol-yphagous sap-feeding insect Planococcus *** also tested the mechanisms triggering defense responses of *** by including treatments of artificial leaf removal and jasmonic acid ***,we examined the effect of physiological integration on these defense *** Findings The combination of artificial leaf removal and jasmonic acid appli-cation produced a similar effect to that of leaf-feeding by the real *** integration influenced the defense strat-egies of *** against herbivores,and increased biomass allocation to aboveground parts in its apical ramets damaged by real *** study highlights the importance of physio-logical integration and modular plasticity for understanding the consequences of herbivory in clonal plants.

关键词： Agasicles hygrophila alligator weed clonal integration herbivory Planococcus minor

Epithelial to mesenchymal transition in the progression of tubulointerstitial fibrosis

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Chinese Medical Journal 2007年第21期120卷 1925-1930页

作者： LI Min-xia LIU bi-cheng Institute of Nephrology Zhong Da Hospital Southeast University Nanjing 210009 China

Objective To review the mechanisms of epithelial to mesenchymal transition （EMT） and its role in the progression of tubulointerstitial fibrosis. Data sources The data used in this review were obtained mainly from the studies of EMT reported from 2000-2006. Study selection Relevant articles on studies of EMT in tubulointerstitial fibrosis were selected. Data were mainly extracted from the 45 articles listed in the reference section of this review. Results The process of EMT has gained wide recognition as candidate mechanism in progression of chronic fibrotic disorders. New markers were identified and facilitate the observation of EMT. EMT is regulated by many factors through activation of kinase-dependent signaling cascades. Recent findings suggest that EMT is a reversible process, which can be controlled by factors for their epithelial inducing activities. Conclusion Remarkable progresses of EMT research have been made recently. Preventing or reversing EMT is a promising strategy against renal fibrosis.

关键词： epithelial to mesenchymal transition connective tissue growth factor transforming growth factor integrin-linked kinase tubulointerstitial fibrosis

应用鱼类生物完整性指数评价黑水河河流健康状况

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水生态学杂志 2024年第2期45卷 73-83页

作者：李文滕航田辉伍邓华堂成必新杨少荣刘绍平陈大庆段辛斌中国水产科学研究院长江水产研究所农业农村部长江中上游渔业资源环境科学观测实验站湖北武汉430223 华中农业大学水产学院湖北武汉430070 西南大学生命科学学院重庆400715 上海勘测设计研究院有限公司上海200434 中国三峡建工(集团)有限公司四川成都610041

黑水河为金沙江下游一级支流,是白鹤滩库区干流鱼类的重要替代生境和优先保护支流,评价黑水河河流健康状况,可为黑水河鱼类栖息地生态修复提供数据支撑。2018年11月至2019年9月在黑水河23个采样点开展了4次鱼类资源调查,共采集到鱼类45(... 详细信息

黑水河为金沙江下游一级支流,是白鹤滩库区干流鱼类的重要替代生境和优先保护支流,评价黑水河河流健康状况,可为黑水河鱼类栖息地生态修复提供数据支撑。2018年11月至2019年9月在黑水河23个采样点开展了4次鱼类资源调查,共采集到鱼类45(亚)种,隶属于4目10科33属。以黑水河河口、水文站上游和825回水点作为参照点,经过分布范围、判别能力及Pearson相关性分析等指标构建黑水河鱼类生物完整性指数(F-Ibi)评价体系。使用1、3、5赋值法和比值法计算各采样点的Ibi分值以评价各采样点健康状况,结果显示,1、3、5赋值法和比值法的结果虽不完全相同,但趋势是一致的。黑水河大部分采样点的健康状况处于“较差”和“一般”水平。相关性分析结果显示,F-Ibi分值与海拔呈显著负相关(P<0.01)。丰度生物量比较曲线显示,黑水河鱼类群落结构整体上受到中度干扰。

关键词：鱼类生物完整性指数河流健康黑水河

Land Suitability Assessment and Land Use Change in Fujian Province,China

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Pedosphere 2007年第4期17卷 493-504页

作者： QUAN bin ZHU He-Jian CHEN Song-Lin M. J. M. ROMKENS LI bi-cheng Research Center of Soil and Water Conservation and Ecological Environment Chinese Academy of Sciences and Mi- nistry of Education Northwest Sci-Tech University of Agriculture and Forestry Yangling Shaanxi 712100 （China）. Key Laboratory of Subtropical Resources and Environment of Fujian Province Fujian Normal University Fuzhou 350007 （China） USDA/ARS National Sedimentation Laboratory P. O. Box 1157 Oxford MS 38655 （USA）

To present the current status of land quality and distribution and the trends in land use change, the physical suitability of cropland and forestland and the associated changes in Fujian Province were evaluated and analyzed using data obtained from geographical information systems (GIS) and remote sensing (RS).Of the total land area of Fujian Province,first class suitable cropland accounted for only 4.21%, whereas unsuitable cropland accounted for 84.78%. The percentage of first class suitable cropland in the southeastern region (5.32%) was much higher than that in the northwestern area (2.91%).Only 13.63% of the existing cropland area consisted of first class cropland and 70.08% was classified as unsuitable for *** the total land area of Fujian Province,the first class forestland comprised 55.25% and the unsuitable forestland (including third class) comprised 21.2%.The percentage of unsuitable forest area in the existing forestland was only 5.5%.From 1996 to 2001, cropland and unused land decreased significantly, whereas forestland and land used for urban and transport increased ***,the major tasks ahead will be the land development for full grain production potential,the better coordination of allocating land to different uses, and the regulation inappropriate activities that damage agricultural ecosystems.

关键词： Fujian Province GIS land evaluation land use change remote sensing

Crystal structure of a novel non-Pfam protein PF2046 solved using low resolution B-factor sharpening and multi-crystal averaging methods

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Protein & Cell 2010年第5期1卷 453-458页

作者： Jing Su Yang Li Neil Shaw Weihong Zhou Min Zhang Hao Xu bi-cheng Wang Zhi-Jie Liu National Laboratory of biomacromolecules Institute of BiophysicsChinese Academy of SciencesBeijing 100101China College of Life Sciences Nankai UniversityTianjin 300071China School of Life Sciences Anhui UniversityHefei 230039China Department of biochemistry and Molecular biology University of GeorgiaAtlantaGA 30605USA

Sometimes crystals cannot diffract X-rays beyond 3.0Åresolution due to the intrinsic flexibility associated with the *** resolution diffraction data not only pose a challenge to structure determination,but also hamper interpretation of mechanistic *** of a 25.6 kDa non-Pfam,hypothetical protein,PF2046,diffracted X-rays to 3.38Åresolution.A combination of SeMet derived heavy atom positions with multiple cycles of B-factor sharpening,multi-crystal averaging,restrained refinement followed by manual inspection of electron density and model building resulted in a final model with a R value of 23.5(R_(free)=24.7).The asymmetric unit was large and consisted of six molecules arranged as a homodimer of *** of the structure revealed the presence of a RNA binding domain suggesting a role for PF2046 in the processing of nucleic acids.

关键词： low resolution diffraction PF2046 Bfactor sharpening a homodimer of trimers