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Chinese Medical Journal 2010年第24期123卷 3717-3721页

作者： WANG Wei xu jin-zhi ZHANG Tong SHEN Bao-zhong Department of Medical Imaging First Hospital of Harbin Medical University Harbin Heilongjiang 150001 China Department of Thoracic Surgery Fourth Hospital of Harbin Medical University Harbin Heilongjiang 150001 China Department of Medical Imaging Fourth Hospital of Harbin Medical University Harbin Heilongjiang 150001 China

Positron emission tomography （PET） using 18F-fluorodeoxyglucose （FDG） has not been widely used in China for expensive cost （$1200）. Dual-head coincidence single photon emission computed tomography （DHC-SPECT） can depict many of the lesions depicted with a PET scanner in the lungs, which is used in place of PET-CT for discriminating malignant from benign pulmonary nodules in many studies. However, DHC-SPECT has inevitable false-negative results because the sensitivity for small lesions less than 2.0 cm is limited, and has high false-positive rate for active inflammatory nodules. Furthermore,DHC-SPECT also has a considerably higher cost （$300 in China） than other imaging examination.

关键词： diffusion-weighted imaging magnetic resonance imaging decision tree analysis dual-head coincidence single photon emission computed tomography solitary pulmonary nodules lung cancer

Effect of cholesterol lowering on stiffness of aortic and femoral arterial walls in rabbits on a high fat diet

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Chinese Medical Journal 2009年第12期122卷 1444-1448页

作者： xuE Li xu Wan-hai xu jin-zhi ZHANG Tong BI Hong-yuan SHEN Bao-zhong Department of Carctiology Center of Vascular Diseases Fouth Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China Department of Urinary Surgery Fouth Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China Department of Cardiac Surgery Fouth Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China Department of Imaging Fouth Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China

Background Researches in arterial elasticity have increased over the past few years. We investigated the effects of simvastatin on vascular stiffness in fat fed rabbits by ultrasonography. Methods Thirty rabbits were assigned randomly to 3 groups： normal control group （A）, the cholesterol group （B）, simvastatin group （C： high fat diet for 4 weeks and high fat diet ＋ simvastatin for further 4 weeks）. Stiffness coefficient, pressure strain elastic modulus and velocity of pulse waves in abdominal aorta and femoral artery were measured by ultrasonographic echo tracking at the end of the 4th and the 8th weeks. Results At the end of the 4th week, stiffness coefficient, pressure strain elastic modulus and pulse wave velocity of femoral artery were significantly increased in group B compared with those in group A. Similarly, at the end of the 8th week, the same parameters of abdominal aorta were significantly increased in group B compared with those in group A. In contrast, stiffness coefficient, pressure strain elastic modulus and pulse wave velocity of femoral artery were significantly decreased in group C compared with those in group B, however, there was no significant difference in parameters of abdominal aorta between groups B and C. Conclusion Short term administration of simvastatin can improve the elasticity of femoral artery but not abdominal aorta.

关键词： ultrasonography vascular stiffness abdominal aorta femoral artery rabbits

Edaravone attenuates ischemia-reperfusion injury by inhibiting oxidative stress in a canine lung transplantation model

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Chinese Medical Journal 2008年第16期121卷 1583-1587页

作者： xu jin-zhi SHEN Bao-zhong LI Ye ZHANG Tong xu Wan-hai LIU Xiao-wei LU Hong-guang Department of Thoracic Surgery Fourth Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China Department of Medical Imaging Fourth Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China

Background Previous reports have confirmed that edaravone has protective effects against ischemia-reperfusion （IR） injury of many organs. In this study, we investigated the effect of edaravone on preventing IR injury of the lung in a canine lung transplantation model. Methods Twelve weight-matched pairs of random-bred dogs were randomized into two groups. Within each pair, one dog served as donor and the other as recipient. In the study group, prostaglandin EI（PGE1）（8 μg/kg） was injected into the donor pulmonary artery （PA） before occlusion and the donor lungs were flushed with 1.0 L of LPD solution containing edaravone （10 mg/kg） and stored in the same LPD solution at a temperature of 1℃for 8 hours. The left single lung transplantation was then performed and recipients received intravenous injection with edaravone （10 mg/kg） at the onset of reperfusion. In the control group, edaravone was substituted by the same volume of sterile saline solution. Another six dogs were obtained as normal control group in which left lungs were dissected after thoracotomy without an IR injury. One hour after reperfusion, or after dissection of the left lung, the right lung was excluded from perfusion and ventilation after which, cardiopulmonary parameters were measured. Wet/dry ratios, malondialdehyde （MDA） and myeloperoxidase （MPO） levels were assessed and histological analysis of lung tissue performed at the same time. Results All animals survived until the end of the experiment. The study group showed significantly decreased wet/dry ratios （treated：（74.1±4.2）% vs control：（86.8±5.2）%, P 〈0.01）, MDA levels （treated： 0.50±0.08 vs control： 0.88±0.15, P 〈0.01） and MPO activity （treated： 0.23±0.05 vs control： 0.43±0.07, P 〈0.01） compared to the control group two hours after occlusion of the right side. In the control group, pulmonary vascular resistance （PVR） was increased markedly and arterial oxygen partial pressure deteriorated significantly after exclusion of the right side compare

关键词： edaravone ischemia-reperfusion injury lung transplantation oxidative stress reactive oxygen species

支撑循环经济与和谐社会的适用技术共生创新研究

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中国软科学 2006年第4期 103-108页

作者：许志晋吉林大学哲学社会学院吉林长春130012

从"人与自然"或"自然—科技—经济—社会—人类"这一共生的大系统中来研究技术创新,就不能把技术创新仅仅视为一种经济过程,而必须把它看作是一种技术与经济、社会、人类、自然环境之间相互协调和相互整合的共生过程,这就是所谓的适用... 详细信息

从"人与自然"或"自然—科技—经济—社会—人类"这一共生的大系统中来研究技术创新,就不能把技术创新仅仅视为一种经济过程,而必须把它看作是一种技术与经济、社会、人类、自然环境之间相互协调和相互整合的共生过程,这就是所谓的适用技术共生创新。它与以往传统的技术创新以及早期的适用技术创新,都有了质的不同。在一定意义上可以说,适用技术共生创新真正表征和体现了技术创新与经济和社会可持续发展的本质关系,代表了技术创新的根本方向和基本过程,越来越成为我们构建循环经济与和谐社会的正确的技术抉择和重要的技术基础。

关键词：适用技术共生创新循环经济和谐社会可持续发展

基于InSAR的海原—老虎山—毛毛山断裂带现今地壳形变特征

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地震 2017年第2期37卷 78-85页

作者：孙赫徐晶邵志刚中国地震局第二监测中心陕西西安710054 中国地震局地震预测研究所中国地震局地震预测重点实验室北京100036

本文利用107景L波段2007年至2011年的ALOS/PALSAR卫星影像,采用干涉图堆叠技术,基于GAMMA软件,利用影像数据公共区域的均值统计校正,首次获取海原—老虎山—毛毛山断裂带整体地区的平均地壳形变速度场,将大范围形变结果进行统一表达。... 详细信息

本文利用107景L波段2007年至2011年的ALOS/PALSAR卫星影像,采用干涉图堆叠技术,基于GAMMA软件,利用影像数据公共区域的均值统计校正,首次获取海原—老虎山—毛毛山断裂带整体地区的平均地壳形变速度场,将大范围形变结果进行统一表达。沿断层方向形变结果表明,断裂带两侧存在明显差异运动,断层的运动性质为左旋,其中毛毛山-老虎山段的差异运动比较显著,在震情跟踪工作中要给予重视。另外,结合研究区域内长期GPS水平速度场,从多角度研究了区域现今地壳运动的特征。

关键词：干涉图堆叠技术海原-老虎山- 毛毛山断裂带地壳形变速度场

甲状腺功能减退伴ST段改变患者非心脏开胸术后并发症观察

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中国地方病学杂志 2009年第5期28卷 572-574页

作者：张岩徐进志哈尔滨医科大学附属第二医院动态心电室 150086 哈尔滨医科大学附属第四医院胸心外科 150086

目的观察甲状腺功能减退伴ST段改变患者非心脏开胸术后并发症发生情况。方法选择61例甲状腺功能减退需行非心脏开胸手术患者，在术前7天内补充甲状腺激素至正常水平，并用动态心电图（Hoher）检测其ST段变化，按ST段压低〉10．05mV分为S... 详细信息

目的观察甲状腺功能减退伴ST段改变患者非心脏开胸术后并发症发生情况。方法选择61例甲状腺功能减退需行非心脏开胸手术患者，在术前7天内补充甲状腺激素至正常水平，并用动态心电图（Hoher）检测其ST段变化，按ST段压低〉10．05mV分为ST段改变组（28例）和ST段非改变组（33例）。在手术前、后检测血清甲状腺激素水平．术后48h Holter检测心肌缺血情况，并院内随访术后其他心血管并发症。结果手术前、后ST段改变组患者血清TT3[（1．30±0．41）、（2．09±0．45）nmol／L]、TT4[（80．56±30．28）、（84．55±33．57）nmol／L]，与ST段非改变组[TT2：（1．43±0．52）、（2．38±0．51）nmol／L；TT4（82．70±29．43）、（93．47±35．02）nmo]／L]比较，差异无统计学意义（P均〉0．05）。ST段改变组患者有24例术后发生心肌缺血．而发生其他心血管并发症者10例，ST段非改变组有8例术后发生心肌缺血，其他心血管并发症l例，两组比较差异有统计学意义（χ^2=22．95、10．95，P均〈0．05）。术前Holter检测ST段改变对术后其他心血管并发症发生的阳性预测值为36％（10／28），而未改变的阴性预测值为97％（32／33）。结论甲状腺功能减退伴ST段改变患者非心脏开胸术后易发生心肌缺血和其他心血管并发症，术前Hoher检测ST段改变对术后心血管并发症有一定的预测价值。

关键词：甲状腺功能减退症非心脏开胸手术心肌缺血心血管事件动态心电图

A mechanical reinforced and antifreezing polyacrylate hydrogel electrolyte for high-performance zinc-ion batteries

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Nano Research 2025年第1期18卷 341-350页

作者： Zili Zhang Ruolin Wang Hongfei Lu Di Zhang Yu Zhao jing xu Bin Sun zhi-Min Dang Yang jin School of Electrical and Information Engineering Zheng Zhou UniversityZhengzhou 450001China State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

The operation of aqueous zinc-ion batteries in flexible energy storage field is plagued by the uncontrollable growth of Zn-dendrite and inevitable freeze of water below 0 ℃.Therefore,it is necessary to design a hydrogel electrolyte with good mechanical property and freezing resistance to uniform the Zn-deposition and resist flexibility loss at low *** find that the mechanical property(strength and toughness)of hydrogel electrolyte has a significant impact on the suppression of dendrite growth and the uniform deposition of zinc ***,a polyacrylate hydrogel is prepared in one step by ultraviolet(UV)curing method with Zn(CF_(3)SO_(3))_(2)salt and polyvinyl alcohol(PVA)addition to increase the antifreezing ability and mechanical *** adsorption of water molecules by 2-hydroxyethyl acrylate(HEA)and PVA reduces the freezing point of the hydrogel,which is beneficial for enhancing the electrochemical stability at low *** this basis,the Zn-symmetrical battery with hydrogel electrolyte has a long lifespan of 4710 h at 0.5 mA·cm^(-2)and 0.5 mAh·cm^(-2)at room ***,the hydrogel electrolyte exhibits an outstanding stability at low temperature of^(-2)0 ℃,the lifespan of symmetrical battery reaches to 4000 h at 0.5 mA·cm^(-2)and 0.5 mAh·cm^(-2).The assembled full cell with NaV3O8·1.5H_(2)O(NVO)cathode and hydrogel electrolyte possesses a high capacity retention ratio of 77%after 10,000 cycles at^(-2)0 ℃.The flexible cell can power light-emitting diode(LED)lamp under bending,warping and cutting without liquid leakage and an electronic watch at the operating temperature of^(-2)0 ℃.

关键词： zinc ion battery hydrogel electrolyte mechanical enhancement freezing resistance

Overview of in-situ oxygen production technologies for lunar resources

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng xu Sheng Pang Liangwei Cong Guoyu Qian Dong Wang Laishi Li Yusheng Wu zhi Wang College of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis

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板料双向加压液压胀形数值模拟

锻压技术 2006年第5期31卷 43-45页

作者：徐金志唐景林燕山大学机械工程学院河北秦皇岛066004

应用商用有限元软件ANSYS/LS-DYNA,对板料的双向加压液压胀形过程进行了数值模拟。并利用韧性断裂准则作为胀形高度极限的判断依据,将模拟得到的必要数据代入到准则中。对两种材料、不同初始液体压力条件下的模拟结果表明,随着初始液体... 详细信息

应用商用有限元软件ANSYS/LS-DYNA,对板料的双向加压液压胀形过程进行了数值模拟。并利用韧性断裂准则作为胀形高度极限的判断依据,将模拟得到的必要数据代入到准则中。对两种材料、不同初始液体压力条件下的模拟结果表明,随着初始液体压力的升高,胀形的极限高度也相应的增加,当初始压力与板料的强度相当时,极限高度提高的更明显。

关键词：韧性断裂双向液压胀形初始液体压力极限高度

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基于三级分散系的沥青混合料配合比设计方法

长安大学学报（自然科学版） 2007年第3期27卷 9-14页

作者：徐金枝郝培文肖庆一长安大学特殊地区公路工程教育部重点实验室陕西西安710064

基于沥青混合料的三级分散系理论,定义了表征沥青胶浆、沥青砂浆、粗细集料空隙之间相关关系的两个体积参数Am(沥青混合料中细集料、沥青和矿粉组成的沥青砂浆体积与粗集料空隙体积之比)、Ap(沥青、矿粉组成的沥青胶浆体积与细集料空隙... 详细信息

基于沥青混合料的三级分散系理论,定义了表征沥青胶浆、沥青砂浆、粗细集料空隙之间相关关系的两个体积参数Am(沥青混合料中细集料、沥青和矿粉组成的沥青砂浆体积与粗集料空隙体积之比)、Ap(沥青、矿粉组成的沥青胶浆体积与细集料空隙体积之比)。通过冻融劈裂、高温车辙、低温弯曲等室内试验,研究了沥青混合料各项路用性能与Am、Ap的变化规律,并根据不同气候分区的气候特点及规范(JTG F40-2004)对其相应的路用性能要求,分别推荐了相应的Am、Ap适宜取值范围;在此基础上,提出了以Am、Ap为指标进行沥青混合料配合比设计的方法。结果表明,以Am、Ap为关键指标,能有效地提高配合比设计的针对性和合理性。

关键词：道路工程沥青混合料路用性能三级分散系配合比设计