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浅析智能船舶智能机舱设计

船舶标准化与质量 2024年第3期 42-47页

作者：曹建伟大连中远海运重工有限公司

智能船舶是造船业和航运业的未来方向,智能机舱作为智能船舶的“心脏”,其自动化、智能化设计至关重要。本文基于大连海事大学智能研究与实训两用船,对智能机舱的设计进行探讨,包括智能系统架构设计、智能机舱附加监测、故障诊断与辅助... 详细信息

智能船舶是造船业和航运业的未来方向,智能机舱作为智能船舶的“心脏”,其自动化、智能化设计至关重要。本文基于大连海事大学智能研究与实训两用船,对智能机舱的设计进行探讨,包括智能系统架构设计、智能机舱附加监测、故障诊断与辅助决策等。

关键词：智能系统智能机舱智能船舶

阴囊坏死性筋膜炎合并阴囊部尿道毁损后尿道重建1例报告

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中华泌尿外科杂志 2024年第7期45卷 554-556页

作者：段刘剑曹建伟张林崔心刚李超上海交通大学医学院附属新华医院泌尿外科上海200092

阴囊坏死性筋膜炎合并阴囊部尿道毁损的病例少见,诊治棘手,本文报道1例。该患者因排尿不畅1周、阴囊肿胀2d人院,行膀胱造瘘、手术清创、创面VSD包扎及负压吸引,术后4周创面愈合后出院。患者清创术后6个月行环形包皮带蒂皮瓣卷管重建阴囊... 详细信息

阴囊坏死性筋膜炎合并阴囊部尿道毁损的病例少见,诊治棘手,本文报道1例。该患者因排尿不畅1周、阴囊肿胀2d人院,行膀胱造瘘、手术清创、创面VSD包扎及负压吸引,术后4周创面愈合后出院。患者清创术后6个月行环形包皮带蒂皮瓣卷管重建阴囊部12cm尿道缺损,尿道重建术后3周拔除导尿管,术后5周拔除膀胱造瘘管,恢复自主排尿。尿道重建后随访近1年,排尿通畅,无尿瘘发生。

关键词：坏死性筋膜炎尿道毁损包皮带蒂皮瓣尿道重建

Synergetic effect of secondary nucleation and growth on the lithium carbonate particle size in the gas-liquid reactive crystallization of LiCl-NH3·H2O-CO2

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Particuology 2020年第4期18卷 10-17页

作者： Menghua Tian jianwei Guo Zhi Wang jianwei cao Xuzhong Gong Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production TechnologyInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

In this study,the gas-liquid reactive crystallization of LiCl-NH3·H2O-CO2 was adopted to produce *** weakly alkaline nature of NH3·H2O in the absence of any recarbonation process resulted in a unimodal and easily controllable particle size distribution(PSD)of the obtained *** reaction temperature significantly influenced both the Li2CO3 particle size and *** increasing the temperature from 25 to 60℃,the volume weighted mean particle size increased from 50.5 to 100.5μm,*** Li2CO3 secondary nucleation rate and growth rate were obtained by focused beam reflectance measurements and a laser particle size analyzer,*** secondary nucleation rate of Li2CO3 reduced as a function of temperature,whereas the growth rate *** addition to improving the surface energy of the crystals to enhance the growth process,higher temperatures also reduced the supersolubility of Li2CO3,which also plays a role to decrease the secondary nucleation *** a constant temperature,supersaturation affects the Li2CO3 particle size through the synergistic effect of secondary nucleation and ***,with improved supersaturation,the mean particle size of Li2CO3 *** results provide a meaningful way to evaluate the crystallization process and to regulate the particle size.

关键词： Li2CO3 Gas-liquid reactive crystallization Particle size distribution Supersaturation Secondary nucleation Growth rate

东西部区域协同创新水平测度及提升对策——以宁夏和10个东部地区省份为例

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科技管理研究 2024年第13期44卷 42-47页

作者：苗婷曹建巍包文北方民族大学商学院宁夏银川750021 宁夏国际人才交流中心宁夏银川750001

通过构建宁夏与东部省份的科技协同创新指标体系,运用熵值法确定各级指标的权重,系统性地评估2017—2021年间宁夏与东部10个省份的科技协同创新水平。通过对综合创新水平和协同创新水平这两个一级指标的深入分析,研究表明,宁夏与东部地... 详细信息

通过构建宁夏与东部省份的科技协同创新指标体系,运用熵值法确定各级指标的权重,系统性地评估2017—2021年间宁夏与东部10个省份的科技协同创新水平。通过对综合创新水平和协同创新水平这两个一级指标的深入分析,研究表明,宁夏与东部地区科技协同创新水平明显提高,但宁夏在综合创新水平上与东部地区相比仍有显著差距;东西部主体间和区域间的协同创新极大地促进宁夏区域创新能力的提升,凸显区域协同创新在提升西部省份科技创新能力、促进地区间资源共享和优势互补、加速地区经济发展的重要作用。因此,要从增强资源配置的强度、促进人才要素流动、驱动有效创新产出和加强主体间与区域间协同4个方面实现科技创新协同发展。研究结果不仅为宁夏与东部地区省份之间的科技协同创新提供了实证支持,也为缩小东西部发展差距、促进技术和知识交流提出具体对策建议。

关键词：宁夏东西部协同创新科技合作熵值法

市域铁路无砟轨道WJ-15型有挡肩扣件设计

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铁道建筑 2024年第3期64卷 36-40页

作者：王敏曹建伟李子睿朱煜石柱北京铁科首钢轨道技术股份有限公司北京102206 中国铁道科学研究院集团有限公司铁道建筑研究所北京100081 北京市地铁运营有限公司北京100044

基于市域铁路工程特点,研发了无砟轨道地段用WJ-15型扣件。该扣件采用有挡肩、弹性不分开式结构,弹性垫板静刚度设计值为(25±5)kN/mm,钢轨左右调整量为-10~+10 mm,钢轨高低调整量为-4~+26 mm。室内试验结果表明:该扣件弹性垫板静刚度... 详细信息

基于市域铁路工程特点,研发了无砟轨道地段用WJ-15型扣件。该扣件采用有挡肩、弹性不分开式结构,弹性垫板静刚度设计值为(25±5)kN/mm,钢轨左右调整量为-10~+10 mm,钢轨高低调整量为-4~+26 mm。室内试验结果表明:该扣件弹性垫板静刚度、动静刚度比、疲劳后静刚度变化率均满足设计及规范要求;扣件组装疲劳试验后,轨距变化率、组装静刚度变化率以及钢轨纵向阻力、套管抗拔力、绝缘电阻均满足规范要求;标准组装状态下弹条固有频率大于800 Hz,发生共振断裂的风险较小。采用该扣件铺设试验段后开展了实车试验,结果表明,列车以40~210 km/h不同速度级通过时,列车安全性参数及轨道结构稳定性参数均满足规范要求,扣件结构稳定可靠。

关键词：市域铁路无砟轨道有挡肩扣件室内试验试验段实车测试

Quantum Dynamics Calculations on Isotope Effects of Hydrogen Transfer Isomerization in Formic Acid Dimer

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化学物理学报(英文) 2023年第5期36卷 545-552,I0001页

作者： Fengyi Li Xiaoxi Liu Xingyu Yang jianwei cao Wensheng Bian Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

We present a quantum dynamics study on the isotope effects of hydro-gen transfer isomerization in the formic acid dimer,and this is achieved by multidimensional dy-namics calculations with an efficient quantum mechanical theoretical scheme developed by our group,on a full-dimensional neural network ab initio potential energy *** ground-state and fundamental tun-neling splittings for four deuterium isotopologues of formic acid dimer are considered,and the calculated results are in very good general agreement with the avail-able experimental *** isotope effects are revealed,the mode-specific funda-mental excitation effects on the tunneling rate are evidently influenced by the deuterium sub-stitution of H atom with the substitution on the OH bond being more effective than on the CH *** studies are helpful for acquiring a better understanding of isotope effects in the double-hydrogen transfer processes.

关键词： Quantum dynamics Isomerization Isotope effect Tunneling splitting Double hydrogen transfer

Ring Polymer Molecular Dynamics of the C(^(1)D)+H_(2) Reaction on the Most Recent Potential Energy Surfaces

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Chinese Journal of Chemical Physics 2021年第6期34卷 833-842,I0003,I0004页

作者： jianwei cao Yanan Wu Wensheng Bian Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Ring polymer molecular dynamics(RPMD)calculations for the C(^(1)D)+H_(2)reaction are performed on the Zhang-Ma-Bian ab initio potential energy surfaces(PESs)recently constructed by our group,which are unique in very good descriptions of the regions around conical intersections and of van der Waals(vdW)*** calculated reaction thermal rate coefficients are in very good agreement with the latest experimental *** rate coefficients obtained from the ground˜a^(1)A′ZMB-a PES are much larger than those from the previous RKHS PES,which can be attributed to that the vdW saddles on our PESs have very different dynamical effects from the vdW wells on the previous PESs,indicating that the RPMD approach is able to include dynamical effects of the topological structures caused by vdW *** importance of the excited˜b^(1)A′′ZMB-b PES and quantum effects in the title reaction is also underscored.

关键词： Rate coefficients Ring polymer molecular dynamics Complex-forming reactions Potential energy surfaces van der Waals interactions

Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

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Frontiers of Environmental Science & Engineering 2023年第10期17卷 133-145页

作者： Yali Chang jianwei cao Wenfeng Song Zhi Wang Chenyang Xu Mengzhuo Long School of Mechanical Electronic and Information Engineering China University of Mining and TechnologyBeijing 100083China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center of Green Recycling for Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

This work designed a new cao-Al_(2)O_(3)-SiO_(2)-SO3 glass for the immobilization of multiple heavy metals found in dechlorinated fly ash having high amounts of calcium and sulfur. Increasing the (cao + SO3)/SiO_(2) mass ratio (M(CS/S)) from 0.28 to 0.85 was found to lower the proportions of Mn, Ni and Zn in an unstable state, while an M(CS/S) ratio of 0.51 gave the lowest proportions of unstable Cr and Pb. Decreasing the degree of polymerization of the glassy network increased the proportions of Mn, Cr, Ni, Pb and Zn in the carbonate bound state. The leaching out of metals in this state was the primary cause of degradation of Q^(3) structural units in the glassy network. The amount of Mn in the iron-manganese oxide bound state was increased by increasing the number of Q^(2) units in the silicate network. Decreasing the cao/SiO_(2) mass ratio (M(C/S)) raised the proportions of Mn, Ni and Zn in the unstable state. An M(C/S) value of 0.43 lowered the proportions of unstable Cr and Pb. A principal components analysis determined that the leaching of toxic heavy metals from the glass was primarily related to the proportions of these metals in the unstable state while there were no evident correlations between leaching and the proportions in stable states.

关键词： Dechlorinated fly ash SO_(3) Heavy metal Chemical speciation Glass solidification

食管癌术后局限性颈部/上纵隔淋巴结转移再手术效果探讨

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食管疾病 2024年第1期6卷 35-38页

作者：朱磊曹建伟周福有安阳市肿瘤医院河南科技大学附属安阳市肿瘤医院河南省食管癌精准防治医学重点实验室胸外科河南安阳455000

目的探讨食管癌术后颈部或上纵隔淋巴结转移再手术的治疗效果。方法前瞻性收集2019年1月至2022年9月在安阳市肿瘤医院胸外科复查的食管癌术后患者,发现颈部或上纵隔淋巴结转移,CT显示无外侵,可以手术切除的患者,共31例。根据患者的意愿... 详细信息

目的探讨食管癌术后颈部或上纵隔淋巴结转移再手术的治疗效果。方法前瞻性收集2019年1月至2022年9月在安阳市肿瘤医院胸外科复查的食管癌术后患者,发现颈部或上纵隔淋巴结转移,CT显示无外侵,可以手术切除的患者,共31例。根据患者的意愿分为观察组和对照组。观察组16例选择再手术治疗,术后辅助或不辅助放化疗;对照组15例选择单纯放化疗。对比两组的基线资料、随访生存情况,主要研究终点为局部复发和区域复发。结果两组患者的基线数据比较无明显差异,观察组出现2例颈部淋巴瘘,2例喉返神经损伤,1个月后声音嘶哑均恢复正常。手术时间平均为43 min,术后平均住院时间5.8 d,平均住院花费15042元。观察组1 a生存率100%,局部控制率为80%。对照组无治疗后并发症,1 a生存率93.3%,局部控制率为46.7%,相对危险度(relative risk,RR)为0.5,归因危险度(attributable risk,AR)为0.46,对照组平均住院时间为45 d,平均住院花费为42352元。两组比较显示:观察组1 a局部控制率显著优于对照组,以局部复发为研究终点,绘制Kaplan-Meier生存曲线,观察组显著优于对照组(P=0.048)。结论对于食管癌术后局限性颈部/上纵隔淋巴结转移的患者,再手术治疗安全、创伤小、花费低、局部控制率高。

关键词：食管肿瘤淋巴结转移局部复发再手术