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阳泉矿区寺家庄井田9~#煤段煤层气地球化学特征及成因分析

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矿业安全与环保 2019年第3期46卷 96-99页

作者：于振锋郝春生杨昌永姚晋宝王维季长江煤与煤层气共采国家重点实验室山西晋城048000 易安蓝焰煤与煤层气共采技术有限责任公司山西太原030006

为达到寺家庄井田的煤层气增产目的,开展了煤岩煤层气解吸和气体地球化学特征分析。煤岩现场解吸和气体组分分析结果显示: 9 #煤段煤岩在完整解吸过程中,甲烷体积分数先增大后减小,氮气体积分数先减小后增大,重烃体积分数与甲烷体积分... 详细信息

为达到寺家庄井田的煤层气增产目的,开展了煤岩煤层气解吸和气体地球化学特征分析。煤岩现场解吸和气体组分分析结果显示: 9 #煤段煤岩在完整解吸过程中,甲烷体积分数先增大后减小,氮气体积分数先减小后增大,重烃体积分数与甲烷体积分数变化趋势一致,但并不同步,而是要晚些。碳同位素分析显示:随着解吸的进行,煤层δ 13 C(CH 4)整体呈增大的趋势,随着远离煤层δ 13 C(CH 4)逐渐增大。9 #煤段煤层气成因主要为热成因,后期经过了扩散运移,生物作用不明显。

关键词：阳泉矿区寺家庄井田太原组煤层气碳同位素

新冠肺炎应急救治医院负压病房通风系统设计探讨

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洁净与空调技术 2023年第2期 74-79页

作者：于振峰丁东山曾庆雄周爱莲中建科工集团有限公司

以某临时新冠肺炎应急救治医院的负压病房为例,在设定各房间负压值的基础上,对不同漏风量计算方法进行对比分析后,建议采用文献[3]中的缝隙法计算房间漏风量;建议以文献[2]中规定的换气次数确定送风量,房间内的送、排风量差值应由渗入... 详细信息

以某临时新冠肺炎应急救治医院的负压病房为例,在设定各房间负压值的基础上,对不同漏风量计算方法进行对比分析后,建议采用文献[3]中的缝隙法计算房间漏风量;建议以文献[2]中规定的换气次数确定送风量,房间内的送、排风量差值应由渗入及渗出房间的总漏风量差确定,方可维持房间的压差稳定;对采用集装箱活动板房结构的抢险救灾临时性建设项目,不建议在箱体顶板和侧墙穿管进出;为确保病房始终保持负压,建议至少排风机设置备用;现场负压调试较为顺利,所有病房负压值满足要求。

关键词：新冠肺炎负压病房通风系统设计调试

关于GB 21455—2019《房间空气调节器能效限定值及能源效率等级》与GB19576—2019《单元式空气调节机能效限定值及能效等级》差异对项目影响的讨论

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建筑节能（中英文） 2024年第5期52卷 143-146页

作者：于振峰蒋能飞温小勇李春田中建科工集团有限公司广东深圳518000 深圳市建筑设计研究总院有限公司广东深圳518000

针对GB 21455—2019《房间空气调节器能效限定值及能源效率等级》与GB 19576—2019《单元式空气调节机能效限定值及能效等级》两个规范在全年能源消耗效率(APF)和制冷季节能源消耗效率(SEER)两种能效等级指标值要求的不同,从两者各自的... 详细信息

针对GB 21455—2019《房间空气调节器能效限定值及能源效率等级》与GB 19576—2019《单元式空气调节机能效限定值及能效等级》两个规范在全年能源消耗效率(APF)和制冷季节能源消耗效率(SEER)两种能效等级指标值要求的不同,从两者各自的适用范围、能效等级数值、引用标准及其适用范围等方面,进行了不同维度的对比分析。为了便于设计人员选择设计依据及相关规范,讨论细化了两者各自的具体用途和使用场所,可供读者参考。如遇两者有交集的情况,建议按较严格的要求取值,避免影响设备招采和项目验收。为确保项目能正确将设计意图落地实施,提出设计人员除设计工作之外,还需配合的其他工作内容。

关键词：房间空气调节器单元式空气调节机全年能源消耗效率制冷季节能源消耗效率适用范围

The visual fiducial based pose estimation of mobile manipulator in large-scale components manufacturing

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Science China(Technological Sciences) 2021年第10期64卷 2186-2199页

作者： GONG Zeyu yu SuPu TAO Bo GU zhenfeng WANG JinShan DING Han State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

The accurate estimation of the end-effector’s pose in large operating spaces is the key for the mobile manipulator to realize efficient manufacturing of large and complex *** propose a novel pose tracking method in large-range using visual fiducial markers,and further propose the layout optimization method for the encoded fiducial markers.A metric named orientational dilution of precision(ODOP)is proposed to evaluate the magnification of the pose estimation error compared with the measurement error of the coded fiducial *** distribution pattern of the coded markers is analyzed based on ODOP,and the square-shaped layout is determined to be a satisfactory distribution pattern for the minimum positioning unit of markers,and the side length of the square-shaped layout is further *** simulations and experiments prove the effectiveness of the ODOP ***,the square-shaped layout and the designed distribution density for positioning coded markers are adopted to realize the high-precision measurement of large components by the mobile manipulator.

关键词： pose estimation orientational dilution of precision mobile manipulator visual fiducial layout optimization

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深圳地区超高层住宅厨房排油烟道设计探讨

暖通空调 2022年第8期52卷 49-52,68页

作者：于振峰徐峥吴大农陈靖祝铭赵伟中建科工集团有限公司深圳518000 筑博设计股份有限公司深圳绿景(中国)地产深圳华阳国际设计集团深圳

经对比分析不同方案,在满足业主需求及有据可依的前提下,建议案例项目超高层住宅厨房排油烟道按分段排放方案设计,并对直通屋顶烟道方案进行了理论推导,可供类似项目参考。现行规范、标准或图集需尽快更新,以适应设计所需。

关键词：超高层住宅厨房排油烟道设计方案

Extreme vocabulary learning

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Frontiers of Computer Science 2020年第6期14卷 5-15页

作者： Hanze DONG zhenfeng SUN Yanwei FU Shi ZHONG Zhengjun ZHANG yu-Gang JIANG School of Data Science Fudan UniversityShanghai 200433China School of Computer Science Fudan UniversityShanghai 201203China Department of Statistics University of WisconsinMadison 53706USA

Regarding extreme value theory,the unseen novelclasses in the openset recognition can be seen as the extremevalues of training *** this idea,we introducethe margin and coverage distribution to model the trainingclasses.A novel visual-semantic embedding framework-extreme vocabulary learning(EVoL)is proposed;the EVoL embeds the visual features into semantic space in a ***,we adopt the vast open vocabulary in the semantic space to help further constraint the margin and coverage of training *** learned embedding can directlybe used to solve supervised learning,zero-shot learning,andopen set recognition *** on twobenchmark datasets demonstrate the effectiveness of the proposed framework against conventional ways.

关键词： vocabulary informed lcarning zero shot learning extreme value theory

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深圳地区某近零能耗学校设计探讨

暖通空调 2024年第3期54卷 130-135,156页

作者：于振峰骆诗哲温小勇丁东山曾庆雄中建科工集团有限公司深圳518000 中国建筑科学研究院有限公司深圳分公司深圳

以深圳地区某学校项目为案例,对近零能耗建筑相关技术难点进行了分析论证,并提出多项运维、科普措施:采用分体空调的教室设置集中新风系统;利用EnergyPlus软件进行模拟计算,证实热回收装置在深圳地区不具有经济性,新风系统不设置热回收... 详细信息

以深圳地区某学校项目为案例,对近零能耗建筑相关技术难点进行了分析论证,并提出多项运维、科普措施:采用分体空调的教室设置集中新风系统;利用EnergyPlus软件进行模拟计算,证实热回收装置在深圳地区不具有经济性,新风系统不设置热回收装置;编制近零能耗建筑运行管理手册和师生个人节能减排行为建议书,并结合课程进行知识科普,倡导师生行为节能。

关键词：近零能耗建筑学校新风系统热回收运行能耗

Step-wise CAG@PLys@PDA-Cu^(2+)modification on micropatterned nanofibers for programmed endothelial healing

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Bioactive Materials 2023年第7期25卷 657-676页

作者： Bingcheng Yi Boya Zhou zhenfeng Song Lei yu Wenbo Wang Wei Liu Department of Plastic and Reconstructive Surgery Shanghai Key Laboratory of Tissue EngineeringShanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China Department of Vascular Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China

Native-like endothelium regeneration is a prerequisite for material-guided small-diameter vascular *** this study,a novel strategy is proposed to achieve phase-adjusted endothelial healing by step-wise modification of parallel-microgroove-patterned(i.e.,micropatterned)nanofibers with polydopamine-copper ion(PDA-Cu^(2+))complexes,polylysine(PLys)molecules,and Cys-Ala-Gly(CAG)peptides(CAG@PLys@PDA-Cu^(2+)).Using electrospun poly(L-lactide-co-caprolactone)random nanofibers as the demonstrating biomaterial,step-wise modification of CAG@PLys@PDA-Cu^(2+)significantly enhanced substrate wettability and protein adsorption,exhibited an excellent antithrombotic surface and outstanding phase-adjusted capacity of endothelium regeneration involving cell adhesion,endothelial monolayer formation,and the regenerated endothelium *** in vivo implantation for segmental replacement of rabbit carotid arteries,CAG@PLys@PDA-Cu^(2+)modified grafts(2 mm inner diameter)with micropatterns on inner surface effectively accelerated native-like endothelium regeneration within 1 week,with less platelet aggregates and inflammatory response compared to those on non-modified *** observations at 6-and 12-weeks post-implantation demonstrated a positive vascular remodeling with almost fully covered endothelium and mature smooth muscle layer in the modified vascular grafts,accompanied with well-organized extracellular *** contrast,non-modified vascular grafts induced a disorganized tissue formation with a high risk of *** summary,step-wise modification of CAG@PLys@PDA-Cu^(2+)on micropatterned nanofibers can significantly promote endothelial healing without inflicting thrombosis,thus confirming a novel strategy for developing functional vascular grafts or other blood-contacting materials/devices.

关键词： Surface chemistry Anisotropic topography Step-wise modification Endothelial healing Functional vascular grafts

Fundamental mechanisms and phenomena of clathrate hydrate nucleation

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Chinese Journal of Chemical Engineering 2019年第9期27卷 2014-2025页

作者： Jinlong Cui zhenfeng Sun Xiaohui Wang Bin yu Shudong Leng Guangjin Chen Changyu Sun State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China China Ship Design&Research Center Co. Ltd.Dalian 116001China

Insights into the mechanism of hydrate nucleation are of great significance for the development of hydrate-based technologies,hydrate relevant flow assurance,and the exploration of in situ natural gas *** with the thermodynamics of hydrate formation,understanding the nucleation mechanism is challenging and has drawn substantial attention in recent *** this paper,we attempt to give a comprehensive review of the recent progress of studies of clathrate hydrate ***,the existing hypotheses on the hydrate nucleation mechanism are introduced and ***,we summarize recent experimental studies on induction time,a key parameter evaluating the velocity of the nucleation ***,the memory effect is particularly discussed,followed by the suggestion of several promising research perspectives.

关键词： Hydrate Nucleation Mechanism Induction time Memory effect