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Ultrasonic humidifier aerosols:Observed high heavy metal enrichment and a new emission control method

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Journal of Environmental Sciences 2025年第2期148卷 298-305页

作者： Tao Zhang Xiaohui Lu Ruoyu Zhang Xinghua jiang Shanye Yang Xiewen Ma Qianqian gao Xiaofei Wang Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Ultrasonic humidifiers are commonly used in households to maintain indoor humidity and generate a large number of droplets or spray ***,there have been various health concerns associated with humidifier use,largely due to aerosols generated during ***,we investigated the size distribution,chemical composition,and charged fraction of aerosol particles emitted from commercial ultrasonic *** metals in water used for humidifiers were found to be highly enriched in the ultrasonic humidifier aerosols(UHA),with the enrichment factors ranging from 102 to *** enrichment may pose health concerns for the building occupants,as UHA concentrations of up to 106 particles/cm^(3) or 3 mg/m^(3) were ***,approximately 90%of UHA were observed to be electrically charged,for the first time according to our *** on this discovery,we proposed and tested a newmethod to remove UHA by using a simple electrical *** designed electrical field in this work can efficiently remove 81.4%of ***,applying this electrical field could be an effective method to significantly reduce the health risks by UHA.

关键词： Ultrasonic humidifier aerosols Water-to-Air transfer Heavy metal Enrichment factor Electrical field

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保护生物多样性就是保护我们自己

自然杂志 2010年第5期32卷 267-271,298页

作者：蒋高明李勇中国科学院植物研究所植被和环境变化国家重点实验室

生物多样性指的是地球生物圈中所有的生物多样化程度,即动物、植物、微生物,以及它们所拥有的基因和赖以为继的生存环境的多样性。它包含三个层次:遗传多样性,物种多样性,生态系统多样性。人类过度利用自然资源,不恰当地利用物种资源,... 详细信息

生物多样性指的是地球生物圈中所有的生物多样化程度,即动物、植物、微生物,以及它们所拥有的基因和赖以为继的生存环境的多样性。它包含三个层次:遗传多样性,物种多样性,生态系统多样性。人类过度利用自然资源,不恰当地利用物种资源,加剧了自然生态系统退化,加速了物种的退化。国际社会制定并通过了《生物多样性公约》用来保护生物多样性。中国是世界上生物多样性最丰富的国家之一,同样也面临巨大的压力和挑战,但各种措施已付诸实施。

关键词：人类物种牛物多样性保护

Palaeowind reconstruction from Lower Cretaceous wavedominated depositional records of the Tanan Depression,Northeast Asia

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Journal of Oceanology and Limnology 2025年第1期43卷 41-56页

作者： Xinyu XUE Zaixing jiang Chao LIU Li WANG Huanyu XIE Lizhou SONG ming SU School of Marine Science Sun Yat-sen UniversityZhuhai 519083China School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China Sinopec Matrix Corporation Qingdao 266000China Daqing Oilfield Production Technology Institute Daqing 163453China

Palaeowind regime is an important component for reconstructing palaeoclimate and understanding ancient global *** applied the beach-ridge thickness technique(BTT)and the longshore-bar thickness technique(LTT)to reconstruct the Early Cretaceous palaeowind velocities based on depositional records of Tanan Depression in Northeast *** thickness of beach ridges and nearshore bars is the most important parameter for applying the BTT and the LTT *** identified 22 beach ridges and 23 nearshore bars based on drilling cores and wireline-log data in the Tanan *** velocities calculated by using the LTT method ranged from 10.84 to 13.66 m/s,showing a narrower range than those calculated by using the BTT method(7.58–15.93 m/s).We further analyzed the underlying factors causing the difference between the results derived from these two methods based on the sedimentary process of the beach ridge and the nearshore *** reconstructed wind regime was assumed to be the summer monsoon originating from the Mongol-Okhotsk Ocean before it had been completely enclosed,which provides valuable insight into the understanding of the atmospheric circulation in Northeast Asia during the Early Cretaceous.

关键词： palaeowind beach ridge nearshore bar Early Cretaceous East Asia Summer Monsoon

Generation of transgenic chicken through ovarian injection

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Animal Models and Experimental Medicine 2025年第1期8卷 187-193页

作者： Jinghua jiang Caiying Wang Xuguang Du Fei gao Sen Wu Frontiers Science Center for Molecular Design Breeding(MOE) State Key Laboratory of Animal Biotech BreedingCollege of Biological SciencesChina Agricultural UniversityBeijingChina Sanya Institute of China Agricultural University SanyaChina

Background : Traditional DNA microinjection methods used in mammals are difficult to apply to avian species due to their unique reproductive characteristics. Genetic manipulation in chickens, particularly involving immature follicles within living ovaries, has not been extensively explored. This study seeks to establish an efficient method for generating transgenic chickens through ovarian injection, potentially bypassing the challenges associated with primordial germ cell (PGC) manipulation and fertilized egg microinjection. Methods : Hens were anesthetized and underwent a surgical procedure to access the ovary for DNA injection into immature follicles. The study used liposomes to deliver GFP- expressing plasmids at various dosages. After injection, hens recovered, and their eggs were fertilized through artificial insemination. Results : Transgenic chickens were successfully generated in one generation without needing G0 founders. The injection of 20 μg plasmid yielded the highest transgenic efficiency at 12.1%. GFP- positive embryos were confirmed through microscopy, and successful transgene expression was validated at the tissue level using immunostaining. TERT and GFP elements introduced in the G1 generation resulted in 4.1% positive transgene rates, as confirmed by PCR and Southern blotting. Conclusion : This ovarian injection method offers a promising alternative for avian genetic manipulation, bypassing complex PGC procedures and enabling direct generation of G1 transgenic chickens. This technique simplifies the transgenic process for chickens and has the potential to be adapted for other avian species, especially those without established PGCs culture systems.

关键词： avian species gene manipulation ovarian injection transgenic chickens

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来样拉舍尔贾卡面料意匠图的绘制与优化

丝绸 2011年第3期48卷 35-37,42页

作者：李娜蒋高明江南大学经编技术教育部工程研究中心江苏无锡214122

针对贾卡面料来样设计耗时费力的现状,提出一种优化方法。在经编知识理论学习及来样织物分析的基础上,着重研究贾卡面料在平面设计软件中的表现形式,进而分析其对工艺的影响,结果发现在Photoshop中对原图按照一定的程序操作,尤其是对索... 详细信息

针对贾卡面料来样设计耗时费力的现状,提出一种优化方法。在经编知识理论学习及来样织物分析的基础上,着重研究贾卡面料在平面设计软件中的表现形式,进而分析其对工艺的影响,结果发现在Photoshop中对原图按照一定的程序操作,尤其是对索引颜色的新发现使得花型导入工艺软件无杂色。该优化方法既简单明了,又可使花纹线条优美清晰;既减少了工艺人员的工作量,大大提高了工作效率,又方便工艺软件更好地识别。

关键词：拉舍尔贾卡面料来样设计分析

Transition-metal-free isofunctional reaction of α,β-unsaturated ketones/nitriles

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Science China Chemistry 2025年第2期68卷 499-504页

作者： Runyou Ye Jialin ming Qinyue Tao Tian-Yu gao Jian-Heng Ye Da-Gang Yu Xiangge Zhou Key Laboratory of Green Chemistry&Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China Inner Mongolia Key Laboratory of Fine Organic Synthesis Inner Mongolia UniversityHohhot 010021China

Isofunctional reactions involving the cleavage of carbon-carbon double bonds(C=C)hold an important position in organic synthesis,as they allow for the restructuring of alkene carbon chains and enable the exchange of functional groups without introducing exogenous ***,these reactions are primarily divided into C=C/C=C metathesis and C=C/C=O metathesis,with most relying on the use of transition metal *** report herein a C=C/CH_(2) metathesis reaction that obviates the need for transition metals and directing groups,and is characterized by economic and straightforward *** reaction not only facilitates the replacement of nitriles with ketones,but also enables the replacement of ketones with nitriles,demonstrating great universality.

关键词： isofunctional reaction transition-metal-free C=C cleavage base-promoted Michael addition

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多梳拉舍尔花边花型设计探讨

针织工业 2006年第5期 4-7页

作者：马晴蒋高明江南大学江苏无锡214122

拉舍尔花边的花型设计包括花边纹样的造型设计、花型的构成设计、花型的色彩设计以及蕾丝图案“花”与“地”的空间层次设计。造型设计包括设计选题、图案构成和组织结构的搭配,构成设计主要以条形花边为例介绍了其分类、规格尺寸和布局... 详细信息

拉舍尔花边的花型设计包括花边纹样的造型设计、花型的构成设计、花型的色彩设计以及蕾丝图案“花”与“地”的空间层次设计。造型设计包括设计选题、图案构成和组织结构的搭配,构成设计主要以条形花边为例介绍了其分类、规格尺寸和布局,色彩设计中阐述了同种色、类似色和对比色的色彩配置方法和色彩的选择方法,最后从结构和组织等方面对蕾丝图案“花”与“地”的空间层次设计进行了分析与说明。

关键词：拉舍尔花边花型设计造型构成色彩空间