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2023,风景“蛋鸡”独好

中国禽业导刊 2024年第1期41卷 34-37页

作者：胡智胜山东省畜牧总站山东济南250102

2023年,山东省蛋鸡产业发展确定性增强,营养需求导向叠加经济社会发展向好,蛋鸡产业亟需以创新的姿态推进高质量发展。2023年,蛋鸡产能处于合理水平,禽蛋产量相对稳定,养殖盈利总体正常,在畜禽养殖业中“风景这边独好”。

关键词：禽蛋产量蛋鸡产业风景这边独好需求导向合理水平畜禽养殖业山东省

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新形势下矿储联动管理运行新机制实践探索

中国矿业 2024年第1期33卷 52-60页

作者：姜萌蕾舒坤胡志胜宋红霞杨爱生中国石油吐哈油田公司勘探开发研究院新疆哈密839009

随着《关于推进矿产资源管理改革若干事项的意见(试行)》正式实施,标志着国家油气体制改革进入全新时期。油田公司矿业权保护面临严峻挑战,深入了解油气体制改革政策,积极探索新形势下矿业权工作有利做法,对油田公司矿业权保护意义重大... 详细信息

随着《关于推进矿产资源管理改革若干事项的意见(试行)》正式实施,标志着国家油气体制改革进入全新时期。油田公司矿业权保护面临严峻挑战,深入了解油气体制改革政策,积极探索新形势下矿业权工作有利做法,对油田公司矿业权保护意义重大。本文系统总结了A油田公司在新形势下的矿储联动管理运行新机制的实践探索。经过三年的实践,A油田公司形成了矿业权区块综合精细评价方法、报备区转采五年规划及预警机制、储采无缝衔接机制、定期自查自改制度等矿业权工作有利做法。截至目前,A油田公司新增采矿权项目13个,新增采矿权面积404km^(2),增幅43.9%;同时,全面完成2021—2022年油气勘查区块的核减及督查迎检工作,最大限度保护了优质矿业权,确保了油田依法合规勘查开采。通过研究提出硬退减25%的规定不太适应于深层油气和致密油、页岩油等非常规油气藏的勘探开发特点,积极争取矿业权内部流转与优化配置区块,加强矿业权工作总体规划等三点认识与建议,以更好地助力油田业务发展。

关键词：油气矿业权储量探矿权采矿权

Feedback control can make data structure layout randomization more cost-effective under zero-day attacks

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Cybersecurity 2018年第1期1卷 93-105页

作者： Ping Chen zhisheng hu Jun Xu Minghui Zhu Peng Liu College of Information Sciences and Technology The Pennsylvania State UniversityUniversity Park 16802PAUSA The School of Electrical Engineering and Computer Science The Pennsylvania State UniversityState CollegeUniversity Park 16801PAUSA

In the wake of the research community gaining deep understanding about control-hijacking attacks,data-oriented attacks have *** data-oriented attacks,data structure manipulation attack(DSMA)is a major *** research was conducted and shows that DSMA is able to circumvent the most effective defenses against control-hijacking attacks-DEP,ASLR and *** to this day,only two defense techniques have demonstrated their effectiveness:Data Flow Integrity(DFI)and Data Structure Layout Randomization(DSLR).However,DFI has high performance overhead,and dynamic DSLR has two main limitations.L-1:Randomizing a large set of data structures will significantly affect the performance.L-2:To be practical,only a fixed sub-set of data structures are *** the case that the data structures targeted by an attack are not covered,dynamic DSLR is essentially *** address these two limitations,we propose a novel technique,feedback-control-based adaptive DSLR and build a system named *** seeks to optimize the trade-off between security and cost through feedback *** a novel feedback-control-based adaptive algorithm extended from the Upper Confidence Bound(UCB)algorithm,the defender(controller)uses the feedbacks(cost-effectiveness)from previous randomization cycles to adaptively choose the set of data structures to randomize(the next action).Different from dynamic DSLR,the set of randomized data structures are adaptively changed based on the *** obtain the feedbacks,SALADSPlus inserts canary in each data structure at the time of *** have implemented SALADSPlus based on *** results show that the runtime overheads are 1.8%,3.7%,and 5.3% when the randomization cycles are selected as 10s,5s,and 1s respectively.

关键词： Data structure manipulation attack Data structure layout randomization Adaptive security Feedback control

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吐哈油田开发效益评价体系建立与应用

石油科技论坛 2024年第3期43卷 61-68页

作者：李艳明胡志胜李克果舒坤丁大虎中国石油吐哈油田公司勘探开发研究院

随着中国石油集团提质增效活动深入开展,效益评价工作在促进油田高质量发展方面的支撑作用愈加突出。吐哈油田践行油藏管理向油藏经营管理转变的理念,建立了油田开发效益综合评价技术体系。该体系以“业财融合”平台为支撑,以油气田开... 详细信息

随着中国石油集团提质增效活动深入开展,效益评价工作在促进油田高质量发展方面的支撑作用愈加突出。吐哈油田践行油藏管理向油藏经营管理转变的理念,建立了油田开发效益综合评价技术体系。该体系以“业财融合”平台为支撑,以油气田开发效益综合评价为主线,以产能建设、增产措施和提高采收率效益专项评价为辅助,通过精细成本归集、精细产品类别、精细生产活动、精细评价技术,对油田主要生产活动实现全覆盖、全评价。采用收入成本对比评价方法,可完成公司、采油管理区、油气田、区块和单井5个级别的效益评价分类,以及所有增产措施、产能建设新井和提高采收率项目的效益评价。通过分析影响效益的成本因素,详细评价主要生产活动的效益贡献,找出影响整体效益的主要因素和存在问题,从而为油田公司宏观决策提供技术支持,为生产单位改善经营效益提供具体指导。

关键词：油气田开发效益评价业财融合技术体系成本分析效益配产吐哈油田

Actively contractible and antibacterial hydrogel for accelerated wound healing

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Nano Research 2024年第8期17卷 7394-7403页

作者： Zhaoxin Ji Ting Wei Jiafei Zhu Jiaying hu zhisheng Xiao Boxiong Bai Xinying Lv Yu Miao Muchao Chen Cheng Wang Feng Pan Yang Yang Meng Li Qian Chen Institute of Functional Nano and Soft Materials Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Department of Thoracic Surgery Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghai 200433China Central Laboratory Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghai 200433China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Department of dermatology Shanghai Children’s Medical Center School of MedicineShanghai Jiao Tong UniversityShanghai 200025China

Adhesive hydrogel has drawn great attention for wide applications in wound healing owing to its excellent biocompatibility and lasting ***,traditional adhesive hydrogels only keep the wound moist to promote wound *** is still imperative to fabricate adhesive hydrogels that exhibit efficient antibacterial ability,active driving dynamic wound closure,and reactive oxygen species(ROS)scavenging together with excellent mechanical ***,a novel hydrogel based on poly(N-isopropyl acrylamide)(PNIPAAm),a thermoresponsive polymer,and tannic acid(TA)-Ag nanoparticles(TA-Ag NPs)exhibiting active contraction,tissue adhesion,anti-inflammatory and antibacterial functions was ***-Ag dispersed in the hydrogel not only functioned as the catalyst to polymerize the reaction but also provided additional anti-inflammatory and antibacterial ***,tannic acid containing catechol groups endowed the hydrogel with adhesive *** interestingly,the obtained hydrogel exhibited the thermoresponsive shrinkage ability,which could mechanically drive wound closure due to the presence of PNIPAAm *** vivo mouse full-thickness skin defect model demonstrated that this actively contractible and antibacterial hydrogel is a promising dressing to improve wound healing process by accelerating tissue regeneration and preventing bacterial ***,this multi-functional adhesive hydrogel developed here may provide a new possibility for wound healing.

关键词： anti-inflammatory antibacterial active contraction hydrogel patch wound healing

Preparation and Characterization of Nano-Particles PZT Ferroelectric Thin Films by RF-Magnetron Sputtering

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Transactions of Tianjin University 2006年第2期12卷 96-99页

作者：樊攀峰张之圣胡明刘志刚 School of Electronic Information Engineering Tianjin University Tianjin 300072China

Pt/Ti bottom electrodes were fabricated on SiO2/Si substrates by magnetron dual-facingtarget sputtering system. Lead zirconate titanate（PZT） thin films were deposited on Pt/Ti/SiO2/Si substrates by radio frequency （RF） magnetron sputtering system. The thickness of PZT thin films which were deposited for 5 h was about 800 nm. XRD spectra show that PZT thin films deposited in Ar ambience and rapid-thermal-annealed for 20 min at 700 ℃ have good crystallization behavior and perovskite structure. AFM micrographs show that mean diameter of crystallites is 70 nm and surface structures of PZT thin films are uniform and dense. Raw mean, root mean square roughness and mean roughness of PZT thin films are 34..357 rim, 2. 479 nm and 1. 954 nm respectively. As test frequency is 1 kHz, dielectric constant of PZT thin films is 327.5. Electric hysteresis loop shows that coercive field strength, residual polarization strength and spontaneous polarization strength of PZT thin films are 50 kV/cm, 10μC/cm^2 and 13μC/cm^2 respectively.

关键词： PZT thin films radio frequency magnetron sputtering perovskite structure electric hysteresis loop

Predicting the strut forces of the steel supporting structure of deep excavation considering various factors by machine learning methods

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Underground Space 2024年第5期18卷 114-129页

作者： Haibo hu Xunjian hu Xiaonan Gong Research Center of Coastal and Urban Geotechnical Engineering Zhejiang UniversityHangzhou 310058China

The application of steel strut force servo systems in deep excavation engineering is not widespread,and there is a notable scarcity of in-situ measured *** presents a significant research gap in the *** this,our study introduces a valuable dataset and application scenarios,serving as a reference point for future *** main objective of this study is to use machine learning(ML)methods for accurately predicting strut forces in steel supporting structures,a crucial aspect for the safety and stability of deep excavation *** employed five different ML methods:radial basis function neural network(RBFNN),back propagation neural network(BPNN),K-Nearest Neighbor(KNN),support vector machine(SVM),and random forest(RF),utilizing a dataset of 2208 measured *** points included one output parameter(strut forces)and seven input parameters(vertical position of strut,plane position of strut,time,temperature,unit weight,cohesion,and internal frictional angle).The effectiveness of these methods was assessed using root mean square error(RMSE),correlation coefficient(R),and mean absolute error(MAE).Our findings indicate that the BPNN method outperforms others,with RMSE,R,and MAE values of 72.1 kN,0.9931,and 57.4 kN,respectively,on the testing *** study underscores the potential of ML methods in precisely predicting strut forces in deep excavation engineering,contributing to enhanced safety measures and project planning.

关键词： Deep excavation Steel supporting structure Strut forces Machine learning Time Temperature

The super-cycle of the global land-monsoon system

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National Science Review 2024年第05期11卷 107-109页

作者： Yongyun hu Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic Sciences School of Physics Peking University

The modern monsoon system consists of six regional monsoons [1]. These regional monsoons demonstrate coherently annual variations of precipitation and atmospheric circulation patterns, although they have different characteristics. Therefore, these regional monsoons are unified in the context of the global monsoon [1,2], which reflects the dominant mode of coherent annual variations of precipitation and atmospheric circulations in the tropics and subtropics.

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大变局下,为蛋鸡产业高质量发展聚势赋能

中国禽业导刊 2022年第1期39卷 31-32页

作者：胡智胜山东省畜牧总站山东济南250102

2021年,蛋鸡产业最基本的特点就是“两高一低”,即高价格、高成本、低效益。据山东省畜牧总站监测,2021年山东省蛋价平均价格为9.42元/千克,分别比2017、2018、2019、2020年高37%、12%、5%、32%,是近五年来最高价。但是受饲料价格高涨... 详细信息

2021年,蛋鸡产业最基本的特点就是“两高一低”,即高价格、高成本、低效益。据山东省畜牧总站监测,2021年山东省蛋价平均价格为9.42元/千克,分别比2017、2018、2019、2020年高37%、12%、5%、32%,是近五年来最高价。但是受饲料价格高涨的影响,蛋鸡养殖效益反而处于近五年较低水平,仅比2020年同期效益略微见好。同时受市场需求弱化的影响,蛋价涨跌两难,呈现高位震荡态势。蛋鸡产业在微利的红海中寻求突破,产业发展开始由同质化竞争向品质化、本质化竞争转变,呈现了许多创新发展的有益探索。

关键词：蛋鸡产业蛋鸡养殖同质化竞争平均价格畜牧总站市场需求寻求突破两高一低