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钢坯冷却主要过程的作用及影响钢坯质量的因素分析

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山西冶金 2013年第1期36卷 43-45,78页

作者：吕晓茜莱芜钢铁集团自动化部山东莱芜271104

介绍了铸坯冷却过程及各环节的主要作用和影响铸坯冷却的原因,详细讨论影响铸坯质量的因素。

关键词：铸坯冷却铸坯质量影响因素

Transcriptomic analysis reveals the effects of maternal exposure to bisphenol AF on hypothalamic development in male neonatal mice

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Journal of Environmental Sciences 2024年第7期141卷 304-313页

作者： Lin lv Yuanyuan Li Xuanyue Chen Zhanfen Qin State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Fragmented data suggest that bisphenol AF(BPAF),a chemical widely used in a variety of products,might have potential impacts on the ***,we employed male neonatal mice following maternal exposure to explore the effects of low-dose BPAF on hypothalamic development by *** found that maternal exposure to approximately 50μg/(kg·day)BPAF from postanal day(PND)0 to PND 15 altered the hypothalamic transcriptome,primarily involving the pathways and genes associated with extracellular matrix(ECM)and intercellular adhesion,neuroendocrine regulation,and neurological *** RNA analysis confirmed the changes in the expression levels of concerned ***,we further revealed that low-dose BPAF posed a stimulatory impact on pro-opiomelanocortin(POMC)neurons in the arcuate nucleus of the hypothalamus and induced the browning of inguinal white adipose *** findings indicate that developmental exposure to low-dose BPAF could interfere with hypothalamic development and thereby lead to alterations in the ***,5000μg/(kg·day)BPAF caused slighter,non-significant or even inverse alterations than the low dose of 50μg/(kg·day),displaying a dose-independent *** observations suggest that the the dose-independent effects of BPAF might be associated with oxidative stress and inflammatory responses caused by the high ***,our study highlights a risk of low-dose BPAF to human neuroendocrine regulation and metabolism.

关键词： Bisphenol AF Hypothalamus Transcriptomic alteration Pro-opiomelanocortin(POMC)neurons White adipose tissue browning

Drought decreases the positive impact of warming on an alpine grassland community

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Science China Earth Sciences 2024年第10期67卷 3226-3238页

作者： Wang A Wangwang lv Yang ZHOU Bowen LI Jianping SUN Jingya lv Lanying CHEN Dorji TSECHEO Shiping WANG Key Laboratory of Tibetan Plateau Earth Resources and EnvironmentInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China School of Ecology and Environment Tibet UniversityLhasa 850000China University of the Chinese Academy of Sciences Beijing 100049China

Temperature and precipitation are the main factors determining plant community succession and aboveground net primary productivity(ANPP)in natural ***,most climate manipulative experiments have mainly focused on their impacts in isolation,especially in alpine *** we explored the relative effects and interaction of warming and precipitation alteration on succession and ANPP using a 7-year experiment involving warming with precipitation alteration(increase(IP)or decrease(DP))in precipitation relative to ambient precipitation(AP)on the Tibetan *** results showed that warming and warm-wet conditions increased species richness,diversity index,height and cover of overall ***,decreasing precipitation reduced them,but increased *** and the rate of change in community ***,warming mitigated the impacts of decreased precipitation on plant community composition,and the interactive effects of warming and altered precipitation on cover,height and plant ANPP varied with year and plant ***,warming increased community ANPP through increases in forb ANPP or non-dominant species ANPP and biodiversity regardless of change in ***,decreased precipitation reduced community ANPP via decreases in the ANPP of sedges and forbs and *** alteration affected the relationship between biodiversity and community ANPP regardless of warming(IP

关键词： Alpine grassland Climate warming Precipitation alteration Community composition Biodiversity Above-ground net primary productivity

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Pollution characteristics and quantitative source apportionment of heavy metals within a zinc smelting site by GIS-based PMF and APCS-MLR models

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Journal of Environmental Sciences 2024年第10期144卷 100-112页

作者： Huagang lv Zhihuang Lu Guangxuan Fu Sifang lv Jun Jiang Yi Xie Xinghua Luo Jiaqing Zeng Shengguo Xue School of Metallurgy and Environment Central South UniversityChangsha 410083China Zhuzhou Qingshuitang Technology Co. Ltd.Zhuzhou 412000China New World Environment Protection Group of Hunan Changsha 410083China

The abandoned smelters present a substantial pollution threat to the nearby soil and *** this study,63 surface soil samples were collected from a zinc smelter to quantitatively describe the pollution characteristics,ecological risks,and source apportionment of heavy metal(loid)s(HMs).The results revealed that the average contents of Zn,Cd,Pb,As,and Hg were 0.4,12.2,3.3,5.3,and 12.7 times higher than the risk screening values of the construction sites,***,the smelter was accumulated heavily with Cd and Hg,and the contribution of Cd(0.38)and Hg(0.53)to ecological risk was 91.58%.ZZ3 and ZZ7 were the most polluted workshops,accounting for 25.7%and 35.0%of the pollution load and ecological risk,*** influence of soil parent materials on pollution was minor compared to various workshops within the *** with PMF,APCS-MLR and GIS analysis,four sources of HMs were identified:P1(25.5%)and A3(18.4%)were atmospheric deposition from the electric defogging workshop and surface runoff from the smelter;P2(32.7%)and A2(20.9%)were surface runoff of As-Pb foul acid;P3(14.5%)and A4(49.8%)were atmospheric deposition from the leach slag drying workshop;P4(27.3%)and A1(10.8%)were the smelting process of zinc *** paper described the distribution characteristics and specific sources of HMs in different process workshops,providing a new perspective for the precise remediation of the smelter by determining the priority control factors.

关键词： Smelter site Heavy metal(loid)s Source apportionment Positive matrix factorization Absolute principal component score-multiple linear regression

Finite Groups with Some Bounded Codegrees

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1778-1784页

作者： Dong Fang YANG Yu ZENG Heng lv School of Mathematics and Statistics Southwest UniversityChongqing400715P.R.China Department of Mathematics Changshu Institute of TechnologyChangshu215500P.R.China

For a characterχof a finite group G,the number cod(χ) := ∣G:ker(χ)∣/χ(1)is called the codegree ofχ.In this paper,we give a solvability criterion for a finite group G depending on the minimum of the ratioχ(1)^(... 详细信息

关键词： Finite group codegree degree simple group

Management of non-alcoholic fatty liver disease:Lifestyle changes

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World Journal of Gastroenterology 2024年第22期30卷 2829-2833页

作者： Hao lv Yang Liu Department of General Surgery Xi'an Jiaotong University Second Affiliated HospitalXi'an 710004Shaanxi ProvinceChina

In this editorial,we commented on a recently released manuscript by Zeng et al in the World Journal of *** focused specifically on lifestyle changes in patients with non-alcoholic fatty liver disease(NAFLD).NAFLD is a hepatic manifestation of the metabolic syndrome,which ultimately leads to advanced hepatic fibrosis,cirrhosis,and hepatocellular carcinoma and affects more than 25%of the population *** therapeutic strategies against NAFLD such as pharmacologic therapies focus on liver protection,anti-inflammation,and regulating disease-related metabolic disorder *** several drugs are in late-stage development,potent drugs against the diseases are ***,existing surgical approaches such as bariatric surgery are not routinely used to treat *** in patients’unhealthy lifestyles,such as weight loss through dietary changes and exercises to ameliorate patientassociated metabolic disorders and metabolic syndrome,is the first-line treatment for patients with *** sufficient intrinsic motivation and adherence,the management of unhealthy lifestyles can reduce the severity of the disease,improve the quality of life,and increase the survival expectancy of patients with NAFLD.

关键词： Non-alcoholic fatty liver disease Lifestyle physical activity Physical exercise Low-calorie diet Mediterranean diet

Index-free triangle-based graph local clustering

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Frontiers of Computer Science 2024年第3期18卷 143-153页

作者： Zhe YUAN Zhewei WEI Fangrui lv Ji-Rong WEN The Country and Area Studies Academy Beijing Foreign Studies UniversityBeijing 100089China Gaoling School of Artificial Intelligence Renmin University of ChinaBeijing 100872China

Motif-based graph local clustering(MGLC)is a popular method for graph mining tasks due to its various ***,the traditional two-phase approach of precomputing motif weights before performing local clustering loses locality and is impractical for large *** some attempts have been made to address the efficiency bottleneck,there is still no applicable algorithm for large scale graphs with billions of *** this paper,we propose a purely local and index-free method called Index-free Triangle-based Graph Local Clustering(TGLC^(*))to solve the MGLC problem w.r.t.a ***^(*)directly estimates the Personalized PageRank(PPR)vector using random walks with the desired triangleweighted distribution and proposes the clustering result using a standard sweep *** demonstrate TGLC^(*)’s scalability through theoretical analysis and its practical benefits through a novel visualization ***^(*)is the first algorithm to solve the MGLC problem without precomputing the motif *** experiments on seven real-world large-scale datasets show that TGLC^(*)is applicable and scalable for large graphs.

关键词： graph local clustering triangle motif index-free sampling method visualization

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婴儿良性癫痫临床分析

河北医药 2018年第16期40卷 2457-2460,2464页

作者：吕晓倩哈励逊国际和平医院儿科河北省衡水市053000

目的探讨婴儿良性癫痫(BIE)的特征及预后,以便早期识别,合理用药。方法选择30例符合婴儿良性癫痫诊断标准的患儿,总结其临床特点、脑电图特征、治疗及随访结果。结果起病年龄3~14个月;25例(83.3%)发作呈丛集性,主要表现为反应减低、双... 详细信息

目的探讨婴儿良性癫痫(BIE)的特征及预后,以便早期识别,合理用药。方法选择30例符合婴儿良性癫痫诊断标准的患儿,总结其临床特点、脑电图特征、治疗及随访结果。结果起病年龄3~14个月;25例(83.3%)发作呈丛集性,主要表现为反应减低、双眼凝视、头歪向一侧、口咽部自动症,可继发一侧肢体或全身强直或阵挛、口唇青紫;脑电图24例(80%)正常,1例发作丛集性间期见少量痫波,2例见Rolandic区小棘波。5例见临床发作,均为部分性,多起源于后头部,可继发全面性发作;治疗14例首选奥卡西平,11例德巴金,首选应用上述2种药患儿共25例,其中22例均3~4周内发作控制,其余3例3~5个月内发作消失。5例首选开普兰,2例效果欠佳,更换奥卡西平后2~4周发作消失。其中1例服用丙戊酸钠6个月,家属因担心药物不良反应自行停药,停药2个月后复发,再次服用丙戊酸钠后发作消失。1例服用奥卡西平患儿失访,余疗程均1年,随访2年无复发。精神运动发育正常。结论婴儿良性癫痫多呈丛集性发作,发作丛集性间期脑电图可见少量痫波,发作多起源于后头部,应用德巴金、奥卡西平效果好,应用左乙拉西坦部分效果欠佳,应用抗癫痫药物总疗程短,预后好。

关键词：癫痫,良性婴儿

Design of double protograph LDPC codes based JSCC systems via the ACE-PEG algorithm

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Science China(Information Sciences) 2024年第7期67卷 339-340页

作者： Yijie lv Jiguang HE Shaohua HONG Department of Information and Communication Engineering Xiamen University Technology Innovation Institute Centre for Wireless Communications Oulu University

In this study, we present a state-of-the-art design of double protograph low-density parity-check (DP-LDPC) codes based on progressive edge-growth (PEG) algorithm with approximated cycle extrinsic message degree (ACE)... 详细信息

关键词： Benchmarking