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Pd/CuO_(x)催化碘苯和丙烯酸甲酯的Heck反应性能研究
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作者 向灯 代弢 冉茂飞 《山东化工》 CAS 2023年第9期48-52,共5页
Heck反应是构建碳-碳键的有效方法之一。目前广泛应用的非均相Pd基催化剂通常面临着催化活性低、载量高等问题。因此设计高效稳定且成本低廉的非均相催化剂是目前研究的重点。本文以等体积浸渍法制备的铜基氧化物(CuO_(x))负载的Pd基催... Heck反应是构建碳-碳键的有效方法之一。目前广泛应用的非均相Pd基催化剂通常面临着催化活性低、载量高等问题。因此设计高效稳定且成本低廉的非均相催化剂是目前研究的重点。本文以等体积浸渍法制备的铜基氧化物(CuO_(x))负载的Pd基催化剂,在Heck反应中表现出优异的催化性能。利用XRD、TEM、H_(2)-TPR、XPS等一系列表征研究了载Pd铜基催化剂的微观结构及催化Heck反应的影响因素。实验结果表明金属-载体相互作用较弱的催化剂(Pd/Cu-3)在Heck反应中表现出更优异的催化性能,这可能是因为载体上的活性金属Pd更容易浸出到溶液中,加速催化Heck反应,表现出更优异的催化性能。这为进一步设计高效载Pd铜基催化剂提供了参考意义。 展开更多
关键词 非均相催化 Pd基催化剂 HECK反应 金属-载体相互作用(MSI)
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Demonstrate chiral spin currents with nontrivial interactions in superconducting quantum circuit
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作者 喻祥敏 邓翔 +6 位作者 徐建文 郑文 兰栋 赵杰 谭新生 李邵雄 于扬 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第4期587-592,共6页
Quantum many-body systems in which time-reversal symmetry is broken give rise to a wealth of exotic phases,and thus constitute one of the frontiers of modern condensed matter physics.Quantum simulation allows us to be... Quantum many-body systems in which time-reversal symmetry is broken give rise to a wealth of exotic phases,and thus constitute one of the frontiers of modern condensed matter physics.Quantum simulation allows us to better understand many-body systems with huge Hilbert space,where classical simulation is usually inefficient.With superconducting quantum circuit as a platform for quantum simulation,we realize synthetic Abelian gauge fields by using microwave drive and tunable coupling in loop configurations to break the time-reversal symmetry of the system.Based on high-precision manipulation and readout of circuit-QED architecture,we demonstrate the chiral ground spin current of a time-reversal symmetry broken system with nontrivial interactions.Our work is a significant attempt to simulate quantum many-body systems with time-reversal symmetry breaking in multi-qubit superconducting processors. 展开更多
关键词 superconducting qubit time-reversal symmetry breaking CHIRALITY
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不同置钉方法空心螺钉内固定治疗新鲜腕部舟状骨骨折的临床研究 被引量:4
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作者 赵文 林炎水 +5 位作者 蒋涛 贺军 向登 林杨景 刘金望 余华 《创伤外科杂志》 2018年第4期268-271,共4页
目的比较不同置钉方法空心螺钉内固定(hollow screw internal fixation,HSIF)治疗新鲜腕部舟状骨骨折(scaphoid fracture,SF)的临床疗效。方法 2013年7月—2015年6月于成都医学院第一附属医院行HSIF治疗的SF新鲜骨折患者78例,其中男性48... 目的比较不同置钉方法空心螺钉内固定(hollow screw internal fixation,HSIF)治疗新鲜腕部舟状骨骨折(scaphoid fracture,SF)的临床疗效。方法 2013年7月—2015年6月于成都医学院第一附属医院行HSIF治疗的SF新鲜骨折患者78例,其中男性48例,女性30例;年龄17~50岁,平均年龄39.77岁;骨折原因:摔伤32例,道路交通伤30例,运动损伤13例,其他3例。依据随机数字表法将78例SF新鲜骨折患者分为实验1组和实验2组各39例。实验1组行近极向远极HSIF,实验2组行远极向近极HSIF。观察两组骨折愈合情况、恢复工作时间,术前及术后6个月腕关节活动情况及术后6个月Cooney腕关节评分。结果实验1组骨性愈合率(89.74%)高于实验2组(74.36%),骨折愈合时间(9.89±1.17)周、恢复工作时间(11.27±1.38)周均小于实验2组[(13.76±1.68)周、(15.92±1.85)周],P<0.05。术后,实验1组腕关节活动指标均大于实验2组,P<0.05。术后,实验1组各项Cooney腕关节得分及总分均高于实验2组,P<0.05。实验1组优良率(92.31%)高于实验2组(76.92%),P<0.05。结论近极向远极HSIF治疗SF新鲜骨折患者可有效保护局部血供,促进骨性愈合,改善腕关节功能,疗效显著。 展开更多
关键词 舟状骨骨折 腕部 螺钉 内固定 近极 远极
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人源性肝母细胞瘤异种移植模型的构建 被引量:2
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作者 张守华 雷俊 +5 位作者 项灯 万梦琪 邓庆强 何远桥 陈梦洁 曾俊权 《江西医药》 CAS 2020年第4期398-400,共3页
目的建立肝母细胞瘤患者人源移植(PDX)模型,获得与患者肿瘤相似的并可传代的活体替代模型。方法获取肝母细胞瘤患者的新鲜肿瘤活性组织,无菌条件下4h内低温转运,台盼蓝染色法选取活性组织并剪切约3×3×3 mm3的组织块。将原代... 目的建立肝母细胞瘤患者人源移植(PDX)模型,获得与患者肿瘤相似的并可传代的活体替代模型。方法获取肝母细胞瘤患者的新鲜肿瘤活性组织,无菌条件下4h内低温转运,台盼蓝染色法选取活性组织并剪切约3×3×3 mm3的组织块。将原代肿瘤细胞植入BALB/c裸鼠的肩胛骨前区和后肢的背面,当肿瘤的体积达到约800~1500mm^3时,取出一代肿瘤组织,将其中部分冻存,其余组织再次植入BALB/c裸鼠皮下传代。结果所获得PDX模型肿瘤组织与患者肿瘤组织细胞形态及结构均相似。结论采用患者肝母细胞瘤组织BALB/c裸鼠肿瘤移植等方法,可建立患者来源的肝母细胞瘤PDX模型,为进一步肿瘤药物筛以及精准治疗选提供了良好的动物模型。 展开更多
关键词 肝母细胞瘤 人源性肿瘤异种移植 模型构建
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膝关节镜前交叉韧带残端保留重建的疗效分析 被引量:4
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作者 余媛媛 向登 +1 位作者 席小燕 林炎水 《创伤外科杂志》 2021年第8期576-579,共4页
目的研究膝关节镜前交叉韧带残端保留重建的临床疗效。方法回顾性分析2016年1月—2019年12月成都医学院第一附属医院骨科收治的86例前交叉韧带(ACL)损伤患者的病例资料,男性63例,女性23例;年龄22~52岁,平均38.8岁。均为运动损伤。按照... 目的研究膝关节镜前交叉韧带残端保留重建的临床疗效。方法回顾性分析2016年1月—2019年12月成都医学院第一附属医院骨科收治的86例前交叉韧带(ACL)损伤患者的病例资料,男性63例,女性23例;年龄22~52岁,平均38.8岁。均为运动损伤。按照是否保留ACL残端分为保留组(n=46)与不保留组(n=40),保留组行膝关节镜ACL残端保留重建,不保留组行膝关节镜ACL残端不保留重建。观察两组术前及术后6、12个月膝关节功能(Lysholm评分)、膝关节稳定性(KT-2000评分)、本体感觉被动角度再生试验(PART),被动活动察觉阀值(TDPM)。观察两组术后6、12个月股骨、胫骨隧道改变情况及术后并发症。结果术后6个月,保留组Lysholm评分(86.97±9.05)分高于不保留组(80.07±8.43)分,保留组KT-2000评分(2.20±0.25)分、PART(2.09±0.24)°、TDPM(3.78±0.40)°均低于不保留组KT-2000评分(2.40±0.27)分、PART(2.28±0.27)°、TDPM(4.08±0.43)°,P<0.05。术后12个月,保留组Lysholm评分(93.95±9.85)分、KT-2000评分(2.00±0.24)分、PART(1.21±0.15)°、TDPM(2.88±0.31)°与不保留组Lysholm评分(92.77±9.83)分、KT-2000评分(2.03±0.23)分、PART(1.25±0.19)°、TDPM(2.93±0.33)°比较差异均无统计学意义(P>0.05)。术后6、12个月,保留组股骨隧道(7.02±0.73)%、(11.87±1.42)%、胫骨隧道(9.17±0.94)%、(14.87±1.72)%均小于不保留组股骨隧道(7.62±0.80)%、(13.07±1.78)%、胫骨隧道(9.85±1.05)%、(16.25±2.03)%,P<0.05。保留组术后并发症发生率(7%)低于不保留组(23%),P<0.05。结论膝关节镜ACL残端保留重建可有效修复ACL损伤,促进膝关节功能、本体感觉恢复,增强膝关节稳定性,避免术后股骨、胫骨隧道过度扩大,且术后并发症发生率低,有助于患者早期功能康复。 展开更多
关键词 前交叉韧带损伤 膝关节镜 膝关节功能 残端保留重建
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异泽兰黄素通过降低活性氧效应拮抗新霉素诱发的听觉毛细胞损伤的实验研究 被引量:1
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作者 胡兵 向登 +3 位作者 李健 陆小婵 董洪松 聂国辉 《中华耳科学杂志》 CSCD 北大核心 2022年第5期772-777,共6页
异泽兰黄素是一个已在临床应用的新型抗氧化剂,具有抗炎、抗氧化、抗凋亡等多种作用。本研究首次报道异泽兰黄素具有拮抗新霉素耳毒性,保护听觉毛细胞的作用。本研究的体外实验结果显示异泽兰黄素显著降低新霉素对HEI-OC1细胞的毒性作用... 异泽兰黄素是一个已在临床应用的新型抗氧化剂,具有抗炎、抗氧化、抗凋亡等多种作用。本研究首次报道异泽兰黄素具有拮抗新霉素耳毒性,保护听觉毛细胞的作用。本研究的体外实验结果显示异泽兰黄素显著降低新霉素对HEI-OC1细胞的毒性作用,保护HEI-OC1细胞。通过活性氧探针检测本研究发现异泽兰黄素显著降低新霉素诱发的HEI-OC1细胞活性氧。此外,本研究通过线粒体荧光标记检测发现异泽兰黄素显著抑制新霉素对HEI-OC1细胞线粒体的损伤。最后,本研究利用斑马鱼耳毒性模型发现异泽兰黄素明显抑制新霉素对斑马鱼侧线神经丘毛细胞的损伤作用。结合体内和体外实验结果,本研究证实异泽兰黄素通过降低活性氧而拮抗新霉素对听觉毛细胞的损伤,发挥对听觉毛细胞的保护作用。因此,异泽兰黄素可能是一种有临床价值的防治药物性耳聋的听力保护药物。 展开更多
关键词 异泽兰黄素 新霉素 听觉毛细胞 药物性耳聋
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Accuracy Validation for Medical Image Registration Algorithms:a Review 被引量:3
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作者 Zhe Liu xiang deng Guang-zhi Wang 《Chinese Medical Sciences Journal》 CAS CSCD 2012年第3期176-181,共6页
Accuracy validation is essential to clinical application of medical image registration techniques. Registration validation remains a challenging problem in practice mainly due to lack of 'ground truth'. In thi... Accuracy validation is essential to clinical application of medical image registration techniques. Registration validation remains a challenging problem in practice mainly due to lack of 'ground truth'. In this paper, an overview of current validation methods for medical image registration is presented with detailed discussion of their benefits and drawbacks. Special focus is on non-rigid registration validation. Promising solution is also discussed. 展开更多
关键词 医学图像配准 精度验证 图像配准算法 临床应用 配准技术 验证方法 挑战性 非刚性
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A Highly Ordered Hydrophilic–Hydrophobic Janus Bi-Functional Layer with Ultralow Pt Loading and Fast Gas/Water Transport for Fuel Cells 被引量:2
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作者 Xiantao Meng xiang deng +5 位作者 Liusheng Zhou Bin Hu Wenyi Tan Wei Zhou Meilin Liu Zongping Shao 《Energy & Environmental Materials》 SCIE CSCD 2021年第1期126-133,共8页
One of the critical challenges that limit broad commercialization of proton exchange membrane fuel cells(PEMFC)is to reduce the usage of Pt while maintaining high power output and sufficient durability.Herein,a novel ... One of the critical challenges that limit broad commercialization of proton exchange membrane fuel cells(PEMFC)is to reduce the usage of Pt while maintaining high power output and sufficient durability.Herein,a novel bifunctional layer consisting of vertically aligned carbon nanotubes(VACNTs)and nanoparticles of Pt-Co catalysts(Pt-Co/VACNTs)is reported for highperformance PEMFCs.Readily prepared by a two-step process,the Pt-Co/VACNTs layer with a hydrophilic catalyst-loaded side and a hydrophobic gas diffusion side enables a PTFE-free electrode structure with fully exposed catalyst active sites and superior gas–water diffusion capability.When tested in a PEMFC,the bi-functional Pt-Co/VACNTs layer with ultralow Pt loading(~65μgcathodecm-2)demonstrates a power density of 19.5 kW gPt cathode-1 at 0.6 V,more than seven times that of a cell with commercial Pt/C catalyst(2.7 kW gPt cathode-1 at 0.6 V)at a loading of 400μgcathodecm-2 tested under similar conditions.This remarkable design of VACNTs-based catalyst with dual functionalities enables much lower Pt loading,faster mass transport,and higher electrochemical performance and stability.Further,the preparation procedure can be easily scaled up for low-cost fabrication and commercialization. 展开更多
关键词 bi-functional layer hydrophilic-hydrophobic janus proton exchange membrane fuel cells vertically aligned carbon nanotube arrays
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Low-Temperature Processed Carbon Electrode-Based Inorganic Perovskite Solar Cells with Enhanced Photovoltaic Performance and Stability 被引量:1
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作者 Xin Wu Feng Qi +7 位作者 Fengzhu Li xiang deng Zhen Li Shengfan Wu Tiantian Liu Yizhe Liu Jie Zhang Zonglong Zhu 《Energy & Environmental Materials》 SCIE CSCD 2021年第1期95-102,共8页
All-inorganic perovskite solar cells(PVSCs)have drawn widespread attention for its superior thermal stability.Carbon-based devices are promising to demonstrate excellent long-term operational stability due to the hydr... All-inorganic perovskite solar cells(PVSCs)have drawn widespread attention for its superior thermal stability.Carbon-based devices are promising to demonstrate excellent long-term operational stability due to the hydrophobicity of carbon materials and the abandon of organic holetransporting materials(HTMs).However,the difficulty to control the crystallinity process and the poor morphology leads to serious non-radiative recombination,resulting in low V_(OC)and power conversion efficiency(PCE).In this article,the crystal formation process of all-inorganic perovskites is controlled with a facile composition engineering strategy.By bromide incorporation,high-quality perovskite films with large grain and fewer grain boundaries are achieved.As-prepared perovskite films demonstrate longer carrier lifetime,contributing to lower energy loss and better device performance.Fabricated carbon-based HTM-free PVSCs with CsPbI_(2.33)Br_(0.67) perovskite realized champion PCE of 12.40%,superior to 8.80%of CsPbI_(3)-based devices,which is one of the highest efficiencies reported for the carbon-based all-inorganic PVSCs to date.The high V_(OC) of 1.01 V and FF of 70.98% indicate the significance of this composition engineering method.Moreover,fabricated carbon-based devices exhibit excellent stability,and unencapsulated device retains over 90%of its initial efficiency under continuous one sun illumination for 250 h in N_(2) atmosphere and keeps~84%of its original value after stored in ambient environment with RH 15–20% for 200 h.This work provides a facile way to fabricate high-performance and stable carbon-based all-inorganic PVSCs. 展开更多
关键词 bromide incorporation carbon high performance PEROVSKITE STABLE
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Development and Application of a High-Volume Recycled Powder Solidifying Material for Waterworks Sludge
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作者 xiang deng Sudong Hua +4 位作者 Fan Xia Yanfang Zhang Dapeng Guo Xinxing Zhu Defei Zhu 《Journal of Renewable Materials》 SCIE EI 2022年第4期939-953,共15页
Recycled powder(RP)is produced as a by-product during the process of recycling construction and demolition(C&D)wastes,presenting a low additional value.Using RP-based solidifying material can not only improve its ... Recycled powder(RP)is produced as a by-product during the process of recycling construction and demolition(C&D)wastes,presenting a low additional value.Using RP-based solidifying material can not only improve its utilization efficiency,but also reduce the cost of commercial solidifying materials.To date,this is the best solidifying material utilized to dispose the original waterworks sludge(OWS)with high moisture contents(60%),and the product could be used to fabricate non-fired bricks.This has become a new environment-friendly technology of“using waste to treat waste”.In this paper,the influence of different particle sizes and dosages of RP on the prepared solidifying material was studied.Besides,unconfined compression strength(UCS),volume stability,chemical composition,and heat of hydration,pore structure of the solidifying material were characterized.Then,non-fired bricks were prepared by using the solidifying material,recycled aggregate,and original waterworks sludge.The UCS and softing coefficient(SC)of the non-fired bricks were evaluated.As a result,the 28-day UCS of the solidifying material with optimal(M30)was 35.40 MPa,which could reach 84.37%of Portland cement(PC).The addition of RP increased the volume stability of the solidifying material.The addition of a large amount of RP reduced the heat flux and cumulative heat release of the solidifying material,while its porosity increased.The UCS of non-fired brick(NF20)in 28 days was 15.19 MPa and the SC after 28 days was 78.35%.In conclusion,the preparation of solidifying material using RP could be a promising approach and has a great potential in disposal of original waterworks sludge. 展开更多
关键词 Recycled powder solidifying material original waterworks sludge non-fired brick unconfined compressive strength
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Clinical effect of tiotropium bromide on pulmonary function,arterial blood gas and serum inflammatory cytokine in elderly patients with COPD at stable stage
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作者 xiang deng Xiong-Ping Zhou Zai-Hui Jiang 《Journal of Hainan Medical University》 2018年第22期9-12,共4页
Objective: To observe the clinical effect of tiotropium bromide in elderly patients with COPD at stable stage and its effects on pulmonary function,blood and serum inflammatory cytokine. Methods: 80 elderly patients w... Objective: To observe the clinical effect of tiotropium bromide in elderly patients with COPD at stable stage and its effects on pulmonary function,blood and serum inflammatory cytokine. Methods: 80 elderly patients with COPD s at stable stage were randomly divided into treatment group and control group with 40 patients in each group. The control group was treated with normal treatment. The treatment group was treated with tiotropium bromide on the basis of control group. 3 months after treatment, the pulmonary function、arterial blood gas and serum inflammatory cytokine were detected and compared in the two groups. Results:There was no significant difference in lung function index and TNF- alpha level between the two groups before treatment (P>0.05). The levels of FVC, FEV1% and PEF were increased and serum TNF-α was decreased significantly after treatment in two groups (P<0.05), and they were better than in treatment group than those in control group (all P<0.05);There was no significant difference in blood gas index between the two groups before treatment (P>0.05);In addition, there were no significant difference in the level of PCT, PaO2, PaCO2 and PaO2/FiO2 after treatment in control group, but the level of PCT and PaCO2 were higher and PaO2 and PaO2/FiO2 were lower obviously after treatment (P<0.01). The treatment group was superior to the control group (all P<0.05);Moreover, the curative effect of treatment group was better than that in control group (P<0.05). Conclusion: Tiotropium bromide can improve pulmonary function, pulmonary function、arterial blood gas and serum inflammatory cytokine in elderly stable COPD patients. 展开更多
关键词 TIOTROPIUM BROMIDE COPD Pulmonary function ARTERIAL blood gas SERUM inflammatory CYTOKINE
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网络交换机STP算法研究与实现
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作者 刘台 赵瑞峰 +1 位作者 向灯 张伟 《信息与电脑》 2022年第15期211-214,共4页
网络交换机对广播报文的处理即所有端口对该报文复制转发,若此时网络上有广播报文,则环路的形成会导致广播报文永远无法消除且被复制的越来越多,并在环形网络中形成广播风暴。因此,分析了冗余网络存在的问题,重点介绍了生成树协议(Spann... 网络交换机对广播报文的处理即所有端口对该报文复制转发,若此时网络上有广播报文,则环路的形成会导致广播报文永远无法消除且被复制的越来越多,并在环形网络中形成广播风暴。因此,分析了冗余网络存在的问题,重点介绍了生成树协议(Spanning Tree Protocol,STP)算法的工作原理和核心思想,并提出STP算法在ARM9200处理器与BCM53115交换芯片上实现的具体方案。最后,通过组网测试验证了STP算法能够解决广播风暴问题的正确性。 展开更多
关键词 网络交换机 环路 广播风暴 STP
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Feasibility of condensate water recycle of split air handling unit in Chinese University buildings
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作者 xiang deng Yiyun Shen +4 位作者 Senwang Yang Jingyang Feng Si Wang Dongyue Li Yanru Li 《Energy and Built Environment》 2024年第2期309-315,共7页
Recycling the condensate water of the air conditioner could be explored as an alternative water source to con-tribute to building the green campus.This paper explored the condensate water production through actual mea... Recycling the condensate water of the air conditioner could be explored as an alternative water source to con-tribute to building the green campus.This paper explored the condensate water production through actual mea-surement based on a split air handling unit(SAHU)in a university building.Then,the statistical analysis was used to analyze the recycling feasibility and the impact factors of the condensate water production in 31 Chinese provincial capital cities to obtain the recycling potential map of the condensate water generated from a SAHU.Results showed that:(1)In the measurement,the amount of condensate water produced by a single split air conditioner was 1.6 kg from 12:40 to 13:40.Therefore,the daily output of condensate water of the air condi-tioner with the university operation schedule could reach 52.99 kg during the main air-conditioning season.(2)Among the 31 provincial capital cities in China,the largest condensate water outputs could be found in the Hot Summer and Warm Winter zone and the Hot Summer and Cold Winter zone,with an average monthly output of 1600 kg and 1100 kg,respectively.(3)Regression analysis showed that the dry-bulb temperature and dew point temperature of outdoor air had the highest positive and significant influence on condensate water production.The objective of this study is to provide theoretical guidance for the design and energy conservation evaluation of the feasibility of SAHU condensate water recycling in universities. 展开更多
关键词 Condensate water RECYCLING Regression analysis Split air handling unit University buildings
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中国经济波动的持久性成分高吗? 被引量:3
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作者 祝梓翔 邓翔 路征 《经济学(季刊)》 CSSCI 北大核心 2019年第4期1531-1554,共24页
经济波动的持久性是重要的问题,但缺乏有关中国的研究。本文首先构建了一个不完全信息模型,结果显示:中国TFP的持久性成分高于美国;持久性冲击对中国产出的解释比重高于美国。接着本文扩展出一个具有NK特征的DSGE模型,持久性冲击的解释... 经济波动的持久性是重要的问题,但缺乏有关中国的研究。本文首先构建了一个不完全信息模型,结果显示:中国TFP的持久性成分高于美国;持久性冲击对中国产出的解释比重高于美国。接着本文扩展出一个具有NK特征的DSGE模型,持久性冲击的解释效果大幅弱化,但模型可能存在误设。最后,本文在模型中引入Markov机制,结果表明中国持久性成分在两种状态下都更高。基本结论在完全信息模型、不同效用函数和校准参数下依然成立。 展开更多
关键词 不完全信息 持久性冲击 暂时性冲击
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Id-1在肝细胞癌中表达及其在肿瘤转移中作用机制探讨
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作者 艾军华 刘刚 +3 位作者 程素芬 项灯 熊振芳 时军 《中华肝脏外科手术学电子杂志》 CAS 2019年第2期175-178,共4页
目的探讨分化抑制因子-1(Id-1)在肝细胞癌(肝癌)组织中的表达及其在肿瘤转移中的作用机制。方法标本来源于2014年1月至2016年12月在南昌大学第一附属医院接受肝切除的56例肝癌患者组织标本。患者均签署知情同意书,符合医学伦理学规定。... 目的探讨分化抑制因子-1(Id-1)在肝细胞癌(肝癌)组织中的表达及其在肿瘤转移中的作用机制。方法标本来源于2014年1月至2016年12月在南昌大学第一附属医院接受肝切除的56例肝癌患者组织标本。患者均签署知情同意书,符合医学伦理学规定。其中男41例,女15例;年龄26~79岁,中位年龄55岁。45例癌旁肝组织和21例正常肝组织为对照。采用免疫组化法检测Id-1、E-cadherin、Vimentin和MMP-9表达。两组阳性率比较采用χ~2检验,并进行Spearman等级相关分析。结果肝癌组织Id-1、E-cadherin、Vimentin、MMP-9表达阳性率分别为86%(48/56)、75%(42/56)、39%(22/56)、84%(47/56),明显高于对照组的62%(41/66)、33%(22/66)、15%(10/66)、47%(31/66)(χ~2=8.57,13.62,10.73,11.08;P<0.05)。肿瘤直径>5 cm患者Id-1阳性率为100%(24/24),明显高于直径≤5 cm患者的75%(24/32);转移患者Id-1阳性率97%(34/35),亦明显高于无转移患者的66%(14/21)(χ~2=9.25,10.24;P<0.05)。Id-1表达强度与肝癌分化程度呈负相关(r_s=-0.295,P<0.05)。Id-1表达与E-cadherin、MMP-9表达呈负相关(r_s=-0.432,-0.326;P<0.05),而与Vimentin表达呈正相关(r_s=0.713,P<0.05)。结论 Id-1在肝癌中高表达,其可能机制为通过诱导上皮-间质转化和降解细胞外基质而促进肝癌侵袭转移。 展开更多
关键词 肝细胞 肿瘤侵润 肿瘤转移 上皮细胞-间充质细胞转换
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健侧Dix-Hallpike及Roll-test诱发眼震的单侧后半规管良性阵发性位置性眩晕复位疗效分析 被引量:4
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作者 刘日钊 郑锦泉 +4 位作者 董洪松 向登 何贵华 温演伟 聂国辉 《临床耳鼻咽喉头颈外科杂志》 CAS 北大核心 2020年第11期1027-1029,共3页
目的:比较健侧Dix-Hallpike(D-H)及Roll-test诱发眼震的单侧后半规管良性阵发性位置性眩晕(PC-BPPV)与未出现上述眼震的单侧PC-BPPV的复位疗效并分析其原因。方法:回顾性分析诊断为单侧PC-BPPV患者210例,其中18例仅于健侧D-H诱发眼震(A... 目的:比较健侧Dix-Hallpike(D-H)及Roll-test诱发眼震的单侧后半规管良性阵发性位置性眩晕(PC-BPPV)与未出现上述眼震的单侧PC-BPPV的复位疗效并分析其原因。方法:回顾性分析诊断为单侧PC-BPPV患者210例,其中18例仅于健侧D-H诱发眼震(A组),30例仅于Roll-test诱发眼震(B组),26例于健侧D-H及Roll-test均诱发眼震(C组),136例无出现上述眼震(D组)。以上患者均通过G-Force BPPV诊疗仪确诊并模拟Epley或者Semont方法复位,比较其复位效果。结果:首次复位,D组复位效果优于A组和C组(P<0.05);D组与B组比较,复位效果差异无统计学意义(P>0.05);A组与C组复位效果差异无统计学意义(P>0.05)。A、B、C、D组患者予以复位治疗达到眼震消失或最终眼震减轻(再次复位眼震无改善)所需要的平均复位次数分别为(1.44±0.63)次、(1.46±0.65)次、(1.52±0.87)次、(1.48±0.73)次,4组间两两比较差异均无统计学意义(P>0.05)。而对于多次复位的效果,组间的差异与首次复位结果相同。结论:单侧PC-BPPV行位置试验时,若健侧D-H诱发眼震,首次复位效果欠佳。若仅Roll-test诱发眼震,并不影响其首次复位效果。4种情况的PC-BPPV复位次数无明显差异,但健侧D-H诱发眼震的单侧PC-BPPV患者多次复位后效果仍欠佳。 展开更多
关键词 眩晕 后半规管 眼震 耳石复位
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Experimental Autoimmune Encephalomyelitis Inhibited by Huangqi Guizhi Wuwu Decoction via Th2 Cytokine Enhancement 被引量:3
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作者 Yong Peng Fei-Zhou Zhu +7 位作者 xiang deng Jian-Xiong Zhou Shuai Gao Zhi-Xing Chen Shan-Shan Yang Lu Gan Zhuo-Lin Li Qian-Qian Liu 《World Journal of Traditional Chinese Medicine》 2021年第4期467-476,共10页
Background:Huangqi Guizhi Wuwu decoction(HQGZWW)exhibits good effects when administered to treat multiple sclerosis(MS)and its animal model,experimental autoimmune encephalomyelitis(EAE).Understanding the precise mech... Background:Huangqi Guizhi Wuwu decoction(HQGZWW)exhibits good effects when administered to treat multiple sclerosis(MS)and its animal model,experimental autoimmune encephalomyelitis(EAE).Understanding the precise mechanism of this decoction is thus important.Based on the findings of our previous study,the aim of the present study was to understand the role of antigen-specific CD8^(+)T-cells on the pathogene sis of MS/EAE when HQGZWW is administered as treatment.Methods:Myelin oligodendrocyte glycoprotein(MOG);-induced mice were administered distilled water,prednisone,and high dose or low dose HQGZWW.After purified CD4^(+)and CD8^(+)T-cells were stimulated with the MOG;peptide,proliferation and cytokine secretion assays were performed.To establish the adoptive transfer EAE model,naive mice were injected with MOG;-CD8^(+)or CD4^(+)T-cells.Results:Significant improvements in EAE score and pathology were observed in the high dose HQGZWW and prednisone groups.Compared to the low dose HQGZWW and distilled water groups,lower antigen-specific re sponses,lower levels of interferon-gamma,and higher levels of interleukin(IL)-4 and IL-10 from CD8^(+)and CD4^(+)T cells were observed in the high dose HQGZWW and prednisone groups.Finally,the EAE score was observed to be similar between the high dose HQGZWW group and prednisone group;however,this finding was not observed in the low dose HQGZWW group.Conclusion:Our findings suggest that high dose HQGZWW has similar effects on cell proliferation,cytokine secretion,and EAE score to prednisone,while low dose HQGZWW does not have such effect.The protective role of HQGZWW against EAE might thus depend on the Th2 cytokine secretion profile induced by either MOG;specific CD8^(+)or CD4^(+)T-cells. 展开更多
关键词 CD8-Positive T-lymphocytes experimental autoimmune encephalomyelitis multiple sclerosis myelin-oligodendrocyte glycoprotein Th2 cytokine traditional Chinese medicine
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Tc17 cells inautoimmune diseases 被引量:1
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作者 Yong Peng xiang deng +1 位作者 Qiuming Zeng Yandan Tang 《Chinese Medical Journal》 SCIE CAS CSCD 2022年第18期2167-2177,共11页
Multiple sclerosis(MS)and experimental autoimmune encephalomyelitis(EAE),a pathologically similar disease used to model MS in rodents,are typical CD4^(^(+))T cell-dominated autoimmune diseases.CD4^(+)interleukin(IL)17... Multiple sclerosis(MS)and experimental autoimmune encephalomyelitis(EAE),a pathologically similar disease used to model MS in rodents,are typical CD4^(^(+))T cell-dominated autoimmune diseases.CD4^(+)interleukin(IL)17^(+)T cells(Th17 cells)have been well studied and have shown that they play a critical role in the pathogenesis of MS/EAE.However,studies have suggested that CD8^(+)IL17^(+)T cells(Tc17 cells)have a similar phenotype and cytokine and transcription factor profiles to those of Th17 cells and have been found to be crucial in the pathogenesis of autoimmune diseases,including MS/EAE,psoriasis,type I diabetes,rheumatoid arthritis,and systemic lupus erythematosus.However,the evidence for this is indirect and insufficient.Therefore,we searched for related publications and attempted to summarize the current knowledge on the role of Tc17 cells in the pathogenesis of MS/EAE,as well as in the pathogenesis of other autoimmune diseases,and to find out whether Tc17 cells or Th17 cells play a more critical role in autoimmune disease,especially in MS and EAE pathogenesis,or whether the interaction between these two cell types plays a critical role in the development of the disease. 展开更多
关键词 TC17 Autoimmune diseases Multiple sclerosis Experimental autoimmune encephalomyelitis Retinoic acid receptorrelated orphan receptor gamma TH17
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