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饶河流域水源涵养服务供需演变及驱动因素

水土保持通报 2024年第2期44卷 389-399,464页

作者：高明会蔡海生张学玲佘艳彭思卿江西农业大学江西省自然资源利用科技与管理创新研究基地/南昌市鄱阳湖生态重点实验室富硒农业产业发展研究中心江西南昌330045 江西农业大学国家林草局鄱阳湖流域森林生态系统保护与修复实验室江西南昌330045 自然资源部大湖流域国土空间生态保护修复工程技术创新中心江西南昌330045 江西省国土空间调查规划研究院江西南昌330045

[目的]探究流域水源涵养服务供需的时空分异特征及主要驱动因素,为流域水资源管理和优化配置及生态安全与保护提供科学依据和参考。[方法]以饶河流域为研究区,基于InVEST模型和多源数据定量评估研究区水源涵养服务供给、需求,根据供需... 详细信息

[目的]探究流域水源涵养服务供需的时空分异特征及主要驱动因素,为流域水资源管理和优化配置及生态安全与保护提供科学依据和参考。[方法]以饶河流域为研究区,基于InVEST模型和多源数据定量评估研究区水源涵养服务供给、需求,根据供需指数得到水源涵养服务供需匹配空间关系,利用地理探测器进一步探究水源涵养服务供需关系空间异质性的主要驱动因素。[结果]①2005—2020年水源涵养服务供给和需求量均呈现先增后减的趋势,不同土地利用类型的水源涵养能力具有显著差异,其中林地和草地水源涵养能力明显高于耕地和城乡工矿用地;②水源涵养服务供给和需求空间分布具有明显的空间异质性和不匹配特征,水源涵养供需匹配赤字区主要分布在西部鄱阳县、万年县、乐平市、昌江区和珠山区,盈余区分布在北部浮梁县、东部婺源县、德兴市和弋阳县;③自然因素中年潜在蒸散发、高程和林地覆盖率是影响水源涵养服务供需关系的主要因素,同时,城乡工矿用地和耕地覆盖率等人为因素起主导作用,自然因素和人为因素交互作用,加剧水源涵养服务供需失衡。[结论]饶河流域水源涵养服务供需关系优化存在挑战,未来应在该地区加快建立生态补偿机制,优化林地水源涵养功能,提高水源涵养服务供给,提升水资源利用效率,进一步实现区域水源涵养服务供需平衡,促进生态系统与社会经济系统协调发展。

关键词：水源涵养服务供需关系 InVSET模型地理探测器饶河流域

B.t.微胶囊的喷雾干燥制备工艺优化及性能评价

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农药 2024年第7期63卷 494-499,531页

作者：陈蔚燕高明惠陈泳汀辛露露郑桂玲徐晓庆曲田丽张保华青岛农业大学化学与药学院山东青岛266109 青岛农业大学植物医学学院山东青岛266109 乳山韩威生物科技有限公司山东威海264500

[目的]为保证苏云金芽孢杆菌Bacillus thuringiensis(B.t.)制剂的储藏稳定性和抗逆性,从而充分发挥其杀虫作用、延长田间存活能力,制备了B.t.微胶囊。[方法]以B.t新菌株(B-Y7-1)为研究对象,采用喷雾干燥技术制备B.t.微胶囊,通过单因素... 详细信息

[目的]为保证苏云金芽孢杆菌Bacillus thuringiensis(B.t.)制剂的储藏稳定性和抗逆性,从而充分发挥其杀虫作用、延长田间存活能力,制备了B.t.微胶囊。[方法]以B.t新菌株(B-Y7-1)为研究对象,采用喷雾干燥技术制备B.t.微胶囊,通过单因素筛选及正交优化试验确定了喷雾干燥法的最佳制备工艺,并对其性能和活性进行了表征和评价。[结果]B.t.微胶囊喷雾干燥法的最佳工艺为:3%海藻酸钠为壁材,进口温度180℃、物料流速14 mL/min,微胶囊产率为76.45%±1.35%,活菌率为93.11%±2.03%;54℃下热储14 d后,喷雾干燥法制备的微胶囊囊内的芽孢存活率为71.23%,远高于B.t.菌粉的存活率8.08%;B.t.微胶囊在水中的释放符合一级动力学模型,在土壤中释放符合Ritger-Peppas模型,属于Fick扩散。生物活性测定表明,B.t.微胶囊对蛴螬的持效杀虫效果高于未包埋的B.t.菌液。[结论]实验结果说明B.t.微胶囊化可以改善其稳定性,并具有缓释特性。

关键词：苏云金芽孢杆菌微胶囊喷雾干燥性能

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Accelerating BERT inference with GPU-efficient exit prediction

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Frontiers of Computer Science 2024年第3期18卷 31-42页

作者： Lei LI Chengyu WANG minghui QIU Cen CHEN Ming gao Aoying ZHOU Shanghai Engineering Research Center of Big Data Management School of Data Science and EngineeringEast China Normal UniversityShanghai 200062China Alibaba Group Hangzhou 311121China KLATASDS-MOE School of StatisticsEast China Normal UniversityShanghai 200062China

BERT is a representative pre-trained language model that has drawn extensive attention for significant improvements in downstream Natural Language Processing(NLP)*** complex architecture and massive parameters bring BERT competitive performance but also result in slow speed at model inference *** speed up BERT inference,FastBERT realizes adaptive inference with an acceptable drop in accuracy based on knowledge distillation and the early-exit ***,many factors may limit the performance of FastBERT,such as the teacher classifier that is not knowledgeable enough,the batch size shrinkage and the redundant computation of student *** overcome these limitations,we propose a new BERT inference method with GPU-Efficient Exit Prediction(GEEP).GEEP leverages the shared exit loss to simplify the training process of FastBERT from two steps into only one step and makes the teacher classifier more knowledgeable by feeding diverse Transformer outputs to the teacher *** addition,the exit layer prediction technique is proposed to utilize a GPU hash table to handle the token-level exit layer distribution and to sort test samples by predicted exit *** this way,GEEP can avoid batch size shrinkage and redundant computation of student *** results on twelve public English and Chinese NLP datasets prove the effectiveness of the proposed *** source codes of GEEP will be released to the public upon paper acceptance.

关键词： BERT FastBERT inference acceleration model distillation early exit text classification

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西江伍氏华吸鳅仔、稚鱼的异速生长研究

四川动物 2024年第2期43卷 146-153页

作者：文浩徐林吴志强黄亮亮高明慧宋琦亮何佳洋刘昊孙扬言桂林理工大学环境科学与工程学院广西桂林541004 广西大藤峡水利枢纽开发有限责任公司广西桂平537200 水利部珠江水利委员会水文水资源局广州510380 广西岩溶地区水污染控制与用水安全保障协同创新中心广西桂林541004 广西环境污染控制理论与技术重点实验室广西桂林541004

运用光学显微镜和实验生态学的研究方法,对伍氏华吸鳅Sinogastromyzon wui仔、稚鱼从出膜到30日龄各器官的异速生长进行研究。结果表明,吻长、眼径、头长、头高、体高和体长均存在异速生长的现象(P<0.05),头部器官比身体其他器官优先发... 详细信息

运用光学显微镜和实验生态学的研究方法,对伍氏华吸鳅Sinogastromyzon wui仔、稚鱼从出膜到30日龄各器官的异速生长进行研究。结果表明,吻长、眼径、头长、头高、体高和体长均存在异速生长的现象(P<0.05),头部器官比身体其他器官优先发育。吻长和眼径一直保持正异速生长,头长的生长拐点出现在12~13日龄,拐点前后均保持正异速生长,头高的生长拐点在7~8日龄,拐点前是负异速生长,拐点后是正异速生长;体高的拐点出现在15~16日龄,拐点前后均保持正异速生长,吻至肛长一直保持等速生长,体长保持等速生长。头部器官在早期发育阶段优先发育,可以增强捕食和躲避天敌的能力,并有助于为仔鱼期发育提供能量,适应外界环境,提高存活率。本研究可丰富伍氏华吸鳅仔、稚鱼发育过程的基础生物学资料,为育苗生产和野生早期资源的保护提供理论支撑。

关键词：伍氏华吸鳅异速生长仔、稚鱼生长拐点西江

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花生壳生物炭基Bt复合颗粒剂的制备及其性能评价

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现代农药 2024年第3期23卷 51-56页

作者：朱海云朱美琦高明惠王静徐晓庆张保华宁夏工商职业技术学院能源化工学院银川750021 青岛农业大学化学与药学院山东青岛266109 乳山韩威生物科技有限公司山东威海264500

在采用不同热解温度制备生物炭的基础上,筛选出与Bt相容性好的生物炭和颗粒剂助剂,并运用正交试验优化制剂配方和制备工艺。结果表明,热解温度500℃制备的花生壳生物炭(HS-5)与Bt相容性好。优化后的颗粒剂配方(质量分数)为:Bt菌粉22%、... 详细信息

在采用不同热解温度制备生物炭的基础上,筛选出与Bt相容性好的生物炭和颗粒剂助剂,并运用正交试验优化制剂配方和制备工艺。结果表明,热解温度500℃制备的花生壳生物炭(HS-5)与Bt相容性好。优化后的颗粒剂配方(质量分数)为:Bt菌粉22%、生物炭(HS-5)0.5%、润湿剂拉开粉2%、黏结剂硅酸镁铝2%、崩解剂氯化钠2%。最优制粒工艺条件为:筛孔粒径1.0 mm,40℃条件下烘干40 min。所得颗粒剂各项指标符合国家标准。该研究为生物炭与Bt联合应用提供了参考。

关键词：生物炭苏云金杆菌颗粒剂正交试验制备工艺

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Preferentially selective extraction of lithium from spent LiCoO_(2)cathodes by medium-temperature carbon reduction roasting

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 315-322页

作者： Daixiang Wei Wei Wang Longjin Jiang Zhidong Chang Hualei Zhou Bin Dong Dekun gao minghui Zhang Chaofan Wu School of Chemistry and Biological Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Anhui Chaoyue Environmental Protection Technology Co. LtdChuzhou 239060China Anhui Huihong Technology Co. LtdChuzhou 239060China

Lithium recovery from spent lithium-ion batteries(LIBs)have attracted extensive attention due to the skyrocketing price of *** medium-temperature carbon reduction roasting was proposed to preferential selective extraction of lithium from spent Li-CoO_(2)(LCO)cathodes to overcome the incomplete recovery and loss of lithium during the recycling *** LCO layered structure was destroyed and lithium was completely converted into water-soluble Li2CO_(3)under a suitable temperature to control the reduced state of the cobalt *** Co metal agglomerates generated during medium-temperature carbon reduction roasting were broken by wet grinding and ultrasonic crushing to release the entrained *** results showed that 99.10%of the whole lithium could be recovered as Li2CO_(3)with a purity of 99.55%.This work provided a new perspective on the preferentially selective extraction of lithium from spent lithium batteries.

关键词： spent LiCoO_(2)cathodes medium-temperature carbon reduction lithium extraction priority crystal transformation macro-scopic transport resistance

Keeping Up Appearances before the“Other”?Interculturality and Occidentalism in the Educational TV-Program“Happy Chinese”

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Frontiers of Education in China 2012年第4期7卷 553-575页

作者： Fred DERVIN minghui gao Department of Teacher Education University of Helsinki00790 HelsinkiFinland Department of Sociology University of Turku20520 TurkuFinland

“Happy Chinese”or kuaile hanyu is an educational melodrama produced by the Chinese TV channel CCTV in *** to improve foreign learners’Chinese language skills,the plot revolves around Susan,an American,staying with her former Chinese classmate’s family.“Happy Chinese”proposes both language and cultural *** this paper,the authors are examining the first seven episodes marking Susan’s arrival in China for the Spring *** the study on a postmodern and critical approach to the“intercultural,”as well as on a critical view towards Orientalism and Occidentalism,the authors are interested in how the programme constructs the arrival of the American and the way she is perceived and represented by the“locals.”The authors are also looking into what the Chinese family teaches Susan about being Chinese and,at the same time,the tensions that a certain tendency to“keep up appearances”and appear“real Chinese”before her trigger in the family,across generation and *** research tools used to analyze the data are derived from discursive pragmatics.

关键词： intercultural communication identity Occidentalism Chinese as a foreign language education through media

Wafer-scale carbon-based CMOS PDK compatible with siliconbased VLSI design flow

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Nano Research 2024年第8期17卷 7557-7566页

作者： minghui Yin Haitao Xu Yunxia You Ningfei gao Weihua Zhang Hongwei Liu Huanhuan Zhou Chen Wang Lian-Mao Peng Zhiqiang Li Institute of Microelectronics Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China State Key Lab of Fabrication Technologies for Integrated Circuits Beijing 100029China Beijing Hua Tan Yuan Xin Electronics Technology Co. Ltd.Beijing 101399China Institute of Carbon-based Thin Film Electronics Peking UniversityShanxi 030012China Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics School of ElectronicsPeking UniversityBeijing 100871China

Carbon nanotube field-effect transistors(CNTFETs)are increasingly recognized as a viable option for creating high-performance,low-power,and densely integrated circuits(ICs).Advancements in carbon-based electronics,encompassing materials and device technology,have enabled the fabrication of circuits with over 1000 gates,marking carbon-based integrated circuit design as a burgeoning field of research.A critical challenge in the realm of carbon-based very-large-scale integration(VLSI)is the lack of suitable automated design methodologies and infrastructure *** this study,we present the development of a waferscale 3μm carbon-based complementary metal-oxide-semiconductor(CMOS)process design kit(PDK)(3μm-CNTFETs-PDK)compatible with silicon-based Electronic Design Automation(EDA)tools and VLSI circuit design *** proposed 3μm-CNTFETs-PDK features a contacted gate pitch(CGP)of 21μm,a gate density of 128 gates/mm^(2),and a transistor density of 554 transistors/mm^(2),with an intrinsic gate delay around 134 *** of the 3μm-CNTFETs-PDK was achieved through the successful design and tape-out of 153 standard cells and 333-stage ring oscillator *** the carbon-based PDK and a silicon-based design platform,we successfully implemented a complete 64-bit static random-access memory(SRAM)circuit system for the first time,which exhibited timing,power,and area characteristics of clock@10 kHz,122.1μW,3795μm×2810μ*** research confirms that carbon-based IC design can be compatible with existing EDA tools and silicon-based VLSI design flow,thereby laying the groundwork for future carbon-based VLSI advancements.

关键词： carbon nanotube field-effect transistors(CNTFETs) complementary metal-oxide-semiconductor(CMOS) process design kit(PDK) wafer-scale very-large-scale integration(VLSI)

Characteristics of air pollution by polychlorinated dibenzo-p-dioxins and dibenzofurans in the typical industrial areas of Tangshan City,China

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Journal of Environmental Sciences 2011年第2期23卷 228-235页

作者： Zhiyuan Ren Bing Zhang Pu Lu Cheng Li Lirong gao minghui Zheng Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China.

The ambient air in vicinity of different industrial sources for PCDD/PCDFs was sampled by TSP/PM10 active samplers and passive PUF disk samplers in Tangshan City, a metropolis containing clusters of various industrial plants. The TEQ concentrations of PCDD/PCDFs ranged from 44.2 to 394.1 fg I-TEQ/m^3 with an average of 169.9 fg I-TEQ]m^3. 2,3,4,7,8-PeCDF was the dominant contributor to ∑TEQ, contributing 41% （12% to 55%）, while 1,2,3,4,6,7,8-HpCDE OCDD and OCDF were the major congeners for the total concentrations. The ratios of ∑PCDF/∑PCDD reached 2.54 on average, suggesting that de novo synthesis in thermal processes played an important role to the airborne pollution of PCDD/PCDFs. The similarities congener profiles indicated that TSP and PM10 active sampling methods are comparable for the determination of the PCDD/PCDFs in ambient air, and the ratios of concentrations determined by the two methods suggested that the PCDD/PCDFs tended to stay in fine particles. It was found that 2,3,7,8-TCDF and OCDD were the dominating congeners in the passive PUF disks samples. Through principal components analysis, the coke industry was suggested to be a relatively high potential emission source for PCDD/PCDFs in the ambient air of Tangshan, which was possibly formed by de novo synthesis mechanism. In this study, the atmospheric impacts to the environment from different industrial sources could be ranked as follows （from high to low）： coking, iron sintering, steel making, power generation and chlorinate alkali chemical production industries.

关键词： ambient air dioxins inhalable particles total suspended particles metropolis