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基于深度学习的开源软件安全漏洞预测方法研究

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计算机应用文摘 2024年第11期40卷 110-112页

作者：刘亚鹏河南经济贸易技师学院河南新乡453000

针对开源软件的安全漏洞,现有预测方法的召回率和预测精准率较低,预测效果不符合预期。文章研究了基于深度学习的开源软件安全漏洞预测方法,首先将漏洞描述转换成词向量,其次从词向量中学习抽象的漏洞语义特征,并适应开源软件项目和安... 详细信息

针对开源软件的安全漏洞,现有预测方法的召回率和预测精准率较低,预测效果不符合预期。文章研究了基于深度学习的开源软件安全漏洞预测方法,首先将漏洞描述转换成词向量,其次从词向量中学习抽象的漏洞语义特征,并适应开源软件项目和安全项目的数据分布,最终实现漏洞特征的迁移学习。其中,文章利用sigma准则对缺失的数据进行了补全处理,以识别并删除异常数据点;采用多任务学习方法,在所有任务之间共享隐藏层的特征表示,并使用特定的分类器进行漏洞预测。实验结果表明,该方法在召回率和预测精确率方面表现出色,能够更全面地学习漏洞信息并实现良好的分类效果。

关键词：深度学习开源软件安全漏洞预测

消极情绪对学前儿童问题行为的影响:父母严厉管教的中介作用

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心理科学 2024年第3期47卷 598-605页

作者：刘亚鹏邓慧华梁宗保张光珍南京晓庄学院幼儿师范学院学前弱势儿童研究所南京211171 东南大学儿童发展与学习科学教育部重点实验室南京210096

本研究以358名学步儿为被试,探讨儿童早期不同消极情绪表现是否会通过父母严厉管教影响学前期的问题行为。结果显示:(1)母亲严厉管教在受限后沮丧和学前儿童外化问题行为之间起部分中介作用,即受限后沮丧不仅直接正向预测外化问题行为,... 详细信息

本研究以358名学步儿为被试,探讨儿童早期不同消极情绪表现是否会通过父母严厉管教影响学前期的问题行为。结果显示:(1)母亲严厉管教在受限后沮丧和学前儿童外化问题行为之间起部分中介作用,即受限后沮丧不仅直接正向预测外化问题行为,还会通过母亲严厉管教影响外化问题行为。(2)恐惧对学前儿童内化问题行为的直接作用显著,但父母严厉管教在其中的中介作用不显著。研究结果揭示了早期受限后沮丧和恐惧对学前期问题行为的作用机制存在差异。

关键词：受限后沮丧恐惧问题行为严厉管教

丁酸钠通过G蛋白偶联受体41介导蛋白激酶B/哺乳动物雷帕霉素靶蛋白信号通路刺激牛乳腺上皮细胞增殖

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动物营养学报 2024年第3期36卷 1878-1891页

作者：张静卜丽君郎姣姣刘亚鹏夏呈强霍文婕刘强山西农业大学动物科学学院太谷030801

本试验旨在研究丁酸钠(SB)刺激牛乳腺上皮细胞(BMECs)增殖的分子机制。采用单因素设计,以含不同浓度(0、15、30、45、60和75μmol/L)SB的DMEM/F12培养基(含10%新生胎牛血清)培养BMECs,通过细胞计数试剂盒(CCK⁃8)检测细胞活性,确定适宜S... 详细信息

本试验旨在研究丁酸钠(SB)刺激牛乳腺上皮细胞(BMECs)增殖的分子机制。采用单因素设计,以含不同浓度(0、15、30、45、60和75μmol/L)SB的DMEM/F12培养基(含10%新生胎牛血清)培养BMECs,通过细胞计数试剂盒(CCK⁃8)检测细胞活性,确定适宜SB浓度。然后以对照(0μmol/L)和适宜SB浓度培养BMECs,并采用蛋白激酶B(Akt)阻断剂(AKT⁃IN⁃1)、哺乳动物雷帕霉素靶蛋白(mTOR)阻断剂雷帕霉素(Rap)或小干扰RNA(siR⁃NA)沉默G蛋白偶联受体41(GPR41)对信号通路及受体进行处理,检测BMECs细胞增殖、凋亡以及GPR41和Akt/mTOR信号通路相关基因和蛋白表达的变化。结果表明:1)与对照组相比,60μmol/L的SB显著提高了BMECs细胞活力(P0.05)。3)与对照组相比,60μmol/L的SB极显著提高了GPR41的mRNA相对表达量(P<0.01),显著提高了GPR41蛋白相对表达量(P<0.05)。GPR41 siRNA沉默GPR41后完全逆转了60μmol/L SB对BMECs增殖的促进作用以及Akt/mTOR信号通路相关的增殖基因和蛋白的mRNA或蛋白表达(P<0.05或P<0.01)。由此可见,60μmol/L SB可通过GPR41介导Akt/mTOR信号通路促进BMECs增殖。

关键词： Akt mTOR 信号通路牛乳腺上皮细胞增殖丁酸钠

Dietary supplementation of sodium butyrate enhances lactation performance by promoting nutrient digestion and mammary gland development in dairy cows

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Animal Nutrition 2023年第4期15卷 137-148页

作者： Jing Zhang Lijun Bu yapeng liu Wenjie Huo Chengqiang Xia Caixia Pei Qiang liu College of Animal Sciences Shanxi Agricultural UniversityTaigu 030801China

This experiment was to evaluate the influence of sodium butyrate(SB)addition on milk production,ruminal fermentation,nutrient digestion,and the development and metabolism regulation of the mammary gland in dairy *** Holstein dairy cows averaging 710±18.5 kg body weight,72.8±3.66 d in milk(DIM),and 41.4±1.42 kg/d milk production were divided into four treatments blocked by DIM and milk *** were control group,low SB,medium SB,and high SB with 0,100,200 and 300 g/d of SB addition per cow,*** study lasted for 105 *** of milk,milk protein and lactose quadratically increased(P<0.05),while fat-corrected milk,energycorrected milk and milk fat yields linearly increased(P<0.05)with increasing SB *** digestibility of dietary dry matter,organic matter,and crude protein linearly increased(P<0.05),whereas the digestibility of ether extract,neutral detergent fibre,and acid detergent fibre quadratically increased(P<0.05).Ruminal pH quadratically decreased(P=0.04),while total volatile fatty acids(VFA)quadratically increased(P=0.03)with increasing SB *** acetic acid to propionic acid ratio increased(P=0.03)linearly due to the unaltered acetic acid molar percentage and a linear decrease in propionic acid molar *** enzymatic activity of carboxymethyl-cellulase and a-amylase,populations of total bacteria,total anaerobic fungi,total protozoa,Ruminococcus albus,***,Butyrivibrio fibrisolvens,Fibrobacter succinogenes,and Ruminobacter amylophilus linearly increased(P<0.05).Blood glucose,urea nitrogen,and non-esterified fatty acids linearly decreased(P<0.05),while total protein concentration linearly increased(P=0.04).Moreover,the addition of SB at 200 g/d promoted(P<0.05)mRNA and protein expression of PPARγ,SREBF1,ACACA,FASN,SCD,CCNA2,CCND1,PCNA,Bcl-2,GPR41,and the ratios of p-Akt/Akt and p-mTOR/mTOR,but decreased(P<0.05)mRNA and protein expressions of Bax,caspase-3,and *** results suggest th

关键词： Sodium butyrate Lactation performance Nutrient digestion Milk fat synthesis Mammary gland development

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清胃散治疗小鼠胃热型牙周炎的机制研究

华西药学杂志 2024年第3期39卷 269-273页

作者：朱仁愿刘兴国刘亚鹏续艳丽蒲玉红刘国华李坚徐雪梅兰州市食品药品检验检测研究院甘肃省种植中药材外源性污染物监测工程研究中心甘肃兰州730050 甘肃中医药大学甘肃兰州730099 兰州大学第二医院甘肃兰州730030

目的探讨清胃散治疗小鼠胃热型牙周炎的作用机制。方法将小鼠随机分成正常组、模型组和治疗组,连续ig辣椒醇提液,建立小鼠胃热型牙周炎模型,ig给予小鼠清胃散进行治疗。显微镜下观察小鼠胃和牙周组织的病理变化;采用酶联免疫吸附法测定... 详细信息

目的探讨清胃散治疗小鼠胃热型牙周炎的作用机制。方法将小鼠随机分成正常组、模型组和治疗组,连续ig辣椒醇提液,建立小鼠胃热型牙周炎模型,ig给予小鼠清胃散进行治疗。显微镜下观察小鼠胃和牙周组织的病理变化;采用酶联免疫吸附法测定各组小鼠血清中的炎症因子、氧化应激因子和凋亡因子的含量;并通过干式试剂片技术测定血清中的17种生化指标。结果模型小鼠出现了大便干燥、小便亮黄、腹胀等胃热证症状,病理切片显示胃和牙周组织有大量炎性细胞浸润,符合胃热型牙周炎的诊断标准。清胃散能显著减少胃热型牙周炎小鼠的炎性细胞,恢复胃和牙周组织结构,减少牙周充血;显著升高血清中白细胞介素-10(IL-10)、超氧化歧化酶、B细胞淋巴瘤因子2的含量,显著降低IL-1β、IL-2和IL-6的含量;显著升高尿素、肌酐、总蛋白、白蛋白和碱性磷酸酶的含量,显著降低总胆红素的含量。结论清胃散治疗胃热型牙周炎的作用机制可能与抗炎、抗氧化应激、抗凋亡、调节代谢和提升免疫有关。

关键词：清胃散胃热型牙周炎小鼠酶联免疫吸附法炎症反应氧化应激细胞凋亡机制

Effects of spray adjuvants and operation modes on droplet deposition and elm aphid control using an unmanned aerial vehicle

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International Journal of Agricultural and Biological Engineering 2023年第2期16卷 1-9页

作者： Zechen Dou Zhihao Fang Xiaoqiang Han Muhammad Zeeshan yapeng liu Yubin Lan College of Agriculture/Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Resources Utilization Shihezi UniversityShihezi 832003XinjiangChina College of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255049ShandongChina Shandong Provincial Engineering Technology Research Center for Agricultural Aviation Intelligent Equipment Zibo 255049ShandongChina College of Electronics Engineering(College of Artificial Intelligence) South China Agricultural UniversityGuangzhou 510642China

A conventional spraying mode and a fully autonomous fruit tree operation mode using a model DJ T30 unmanned aerial vehicle(UAV)were used to control aphids control on elm trees and to clarify the distribution of droplets in elm trees sprayed by a *** effects of six aviation spray adjuvants on elm canopy droplet deposition and aphid control were *** software was used to analyze and measure the droplet density and deposition of water sensitive paper in two modes;this was done to calculate the droplet uniformity,depositional penetration,and droplet penetration,and to verify the aphid control *** results showed that the droplet density increased by 79.7%-100.7% in the upper canopy and 0-394.1%in the lower canopy without adjuvants in the fully autonomous fruit tree operation *** upper canopy deposits increased by 65.7%-179.3%,and the lower canopy increased by 0-152.8%.When adjuvants were added,the droplet density in the upper canopy increased by 49.7-56.1%using Jiexiaofeng(JXF),and the lower canopy increased by 138.2%-177.8% using JXF,45.8%-141.3%using Beidatong(BDT),45.5%-92.9% using Gongbei(GB),0-93.5% using Maisi(MS),and 0-95.2%using Manniu(MN).The deposits of the upper canopy increased by 888.1-1154.2% using JXF,0-1298.3% using MN,0-343.9%using BDT,0-422.5% using GB,0-580.3% using *** lower canopy increased by 746.4%-1426.0%using JXF,226.2%-231.0% using BDT,435.8%-644.0% using GB,255.0%-322.4%using MS,and 249.3%-360.0%using *** JXF was added,the droplet uniformity,droplet penetration and depositional penetration were better than when using other *** effects of JXF,BDT and GB in controlling aphids was significantly better than other adjuvants(p<0.05).The following control effects were observed;94.1% with JXF,93.1% with BDT,and 93.3% with GB after 3 d of application,and 97.9% with JXF,95.6% with BDT,and 97.1% with GB after 7 d of *** the same time,the application of the fully autonomous fruit tree operation mode a

关键词： adjuvants UAV operation mode droplet deposition aphid

熔融不锈钢与液态钠相互作用的瞬态换热特性研究

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原子能科学技术 2024年第9期58卷 1893-1901,I0001页

作者：刘雅鹏张大林陈宇彤林悦张熙司田文喜秋穗正苏光辉西安交通大学动力工程及多相流国家重点实验室核科学与技术学院陕西西安710049 中国原子能科学研究院反应堆工程技术研究所北京102413

钠冷快堆严重事故下,堆芯熔融物会与液态金属钠发生相互作用,如果导致堆芯区域内出现钠沸腾的现象,可能会导致堆芯的再临界,从而导致堆芯的进一步熔化。在重定位过程中,堆芯熔融物与液态钠的换热会导致钠出现沸腾,从而影响熔融物射流碎... 详细信息

钠冷快堆严重事故下,堆芯熔融物会与液态金属钠发生相互作用,如果导致堆芯区域内出现钠沸腾的现象,可能会导致堆芯的再临界,从而导致堆芯的进一步熔化。在重定位过程中,堆芯熔融物与液态钠的换热会导致钠出现沸腾,从而影响熔融物射流碎裂与碎片形成。因此,采用严重事故分析程序ACENA对COSA实验平台上开展的熔融不锈钢与液态钠的相互作用的实验进行分析,验证程序对熔融不锈钢与液态钠相互作用过程的瞬态换热特性的分析能力。验证结果表明:程序会高估熔融不锈钢射流与钠池接触时的换热,且不考虑熔融不锈钢外侧凝固形成的硬壳对换热的影响会导致对换热速率的高估。

关键词：钠冷快堆熔融燃料与冷却剂相互作用 ACENA程序

Optimizing electronic structure of Mo_(2)TiC_(2)T_(x) MXene through Nb doping for enhanced electrochemical performance

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Nano Research 2024年第8期17卷 7174-7181页

作者： Jingyuan Zhao Wenzheng Yan Zhaoxi liu Xiaobin liu yapeng Tian Xinwei Cui Henan Institute of Advanced Technology College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450003China College of Physics and Electronic Information Engineering Guilin University of TechnologyGuilin 514004China

MXene is a promising electrode material for both high volumetric capacitance and high-rate performance in ***,the current study has mainly focused on the monometallic element Ti_(3)C_(2)T_(x) MXene until now,while the bimetallic and multimetallic MXene have received comparatively less *** this work,we demonstrate that the electronic structure of the Mo_(2)TiC_(2)T_(x) MXene could be regulated by fine-tuning the content of doped Nb *** enhanced electron cloud density of surface–O termination and the electron spin of the Mo atoms in the Mo_(2)TiC_(2)T_(x) MXene,leads to the boost of electric double-layer capacitor(EDLC)and improvement of *** a consequence,the electrochemical performance of Nb-doped Mo_(2)TiC_(2)T_(x) MXene(Nb-0.3-MXene)demonstrates a capacitance of 398 F·cm^(−3),roughly doubling that of the pristine Mo_(2)TiC_(2)T_(x) MXene electrode at 197 F·cm^(−3) in the 3 M H_(2)SO_(4) *** the same time,the Nb-0.3-MXene could even maintain a capacitance of 82.75% at 200 mV·s−1,with high cyclic stability for 19,000 cycles at 10 A·g−***,Nb-0.3-MXene-based hybrid supercapacitors deliver a remarkable volumetric energy density of 48.1 W·h·L^(−1)at 230.7 W·L^(−1),and 34.4 W·h·L^(−1)at a high power density of 82.6 kW·L^(−1).There exists a balance between the volumetric capacitance and rate performance with different ratios of Nb atoms in the Nb-doped MXene due to the strong interaction between the Nb-doped MXene and the intercalated ***,optimizing the electronic structure of MXene through heteroatom doping is of great potential for enhanced supercapacitor performance.

关键词： niobium doping electronic structure Mo_(2)TiC_(2)T_(x)MXene electron spin rate performance volumetric capacitance

Flame Burn Injury in Yichang of China:the Trends,Complications,and Risk Factor Analysis

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Chinese Journal of Plastic and Reconstructive Surgery 2021年第1期3卷 17-26页

作者： Lixia WEN Weimin WU Yunbo JIN Bo ZHOU Lei WU yapeng liu Ying HU Department of Plastic and Burn Surgery The People’s Hospital of China Three Gorges UniversityThe First People’s Hospital of YichangYichangHubei 443000China Department of Plastic Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China

Background A flame burn is an injury of body tissues,including respiratory tract damage,due to exposure to a flame or its dense *** burns cause some of the most physically and psychologically devastating forms of *** to scald burns,flame burn patients have a higher mortality rate and a higher frequency of multiorgan *** purpose of this research was to investigate the trends,complications,and mortality risk factors of flame burns at the Department of Plastic and Burn Surgery(DPBS)of the People’s Hospital of China Three Gorges University(PHCTGU).Methods A retrospective analysis of 48 flame burn patients—accounting for 8.3%of the 576 burn victims admitted for burns at the PHCTGU from February 1,2010,to September 30,2019—was performed after collecting information from the Burns Registry of the said *** The proportion of patients with flame burns was 8.3%(n=48).The mean total body surface area(TBSA)affected was 27.6%.The mean duration of hospitalization was 32.5 *** etiologies of the flame burns were as follows:gas explosions(21,43.8%),ethanol(8,16.7%),charcoal fire(7,14.6%),petrol explosions(4,8.3%),wooden houses(4,8.3%),and others,including dust,cigarette lighter,and burning incense,accounting for 8.3%of cases(4).Finally,42(87.5%)patients were treated and discharged,and 6(12.5%)patients *** included scarring in 38(90.5%)patients,severe scar contractures on different parts of the body in 25(60.0%)patients,scar ulcer in 6(14.3%)patients,keloids in 3(7.1%)patients,and scar cancer in 1(2.4%)*** complications occurred in the same *** only risk factor for mortality that was identified was TBSA(P=0.043).Conclusions Our study revealed that a small population(8.3%)was injured by flame burns,but 6 deaths were *** must continually enhance safeguard procedures to flames and strengthen education to protect life and avoid severe complications.

关键词： Flame burn Trend Complications Mortality risk factors