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60%SiCp/2009铝基复合材料表面等离子体电解氧化膜的生长和表征

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Transactions of Nonferrous Metals Society of China 2024年第2期34卷 435-452页

作者：廖燚钊王兴平高川力周茜徐驰金小越杜建成薛文斌张永忠北京师范大学核科学与技术学院射线束技术教育部重点实验室北京100875 北京市科学技术研究院辐射技术研究所北京100875 中国有研科技集团有限公司北京100088

在硅酸盐溶液中采用等离子体电解氧化技术在60%SiCP(体积分数)/2009铝基复合材料表面制备陶瓷膜。研究氧化膜的显微组织、成分、润湿性及其耐腐蚀性能,探讨SiC颗粒表面火花放电的产生机理。结果表明,来自硅酸盐溶液的不溶性化合物(SiO_(... 详细信息

在硅酸盐溶液中采用等离子体电解氧化技术在60%SiCP(体积分数)/2009铝基复合材料表面制备陶瓷膜。研究氧化膜的显微组织、成分、润湿性及其耐腐蚀性能,探讨SiC颗粒表面火花放电的产生机理。结果表明,来自硅酸盐溶液的不溶性化合物(SiO_(2))使SiC颗粒表面产生火花放电,Al-Si-O化合物中的缺陷为SiC颗粒表面放电电流的传导提供优先路径。1200s时铝基复合材料表面形成5.5μm厚的均匀膜层,膜层的表面自由能在40s时达到最大值37.10 m J/cm^(2),并在1200 s时下降到25.95 m J/cm^(2)。此外,等离子体电解氧化处理可以显著提高复合材料的耐蚀性。

关键词：等离子体电解氧化铝基复合材料 SiC增强颗粒火花放电润湿性耐蚀性

循环腹腔热灌注化疗治疗恶性腹腔积液的疗效及预后影响因素

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中国肿瘤外科杂志 2024年第4期16卷 388-392页

作者：汪曙红王根和钱六七胡捷陈雍胡善良黄山市人民医院肿瘤科安徽黄山245000

目的探究消化道肿瘤伴恶性腹腔积液患者接受循环腹腔热灌注化疗(CHPPC)治疗的疗效及预后因素。方法选取2019年1月至2022年1月黄山市人民医院收治的190例消化道肿瘤伴恶性腹腔积液患者为研究对象。根据治疗方法不同分为试验组和对照组,... 详细信息

目的探究消化道肿瘤伴恶性腹腔积液患者接受循环腹腔热灌注化疗(CHPPC)治疗的疗效及预后因素。方法选取2019年1月至2022年1月黄山市人民医院收治的190例消化道肿瘤伴恶性腹腔积液患者为研究对象。根据治疗方法不同分为试验组和对照组,试验组采用循环腹腔热灌注化疗(CHPPC),对照组采用常规腹腔灌注化疗,各95例。均进行2个疗程的治疗。观察两组的治疗疗效,对比两组的免疫功能。根据试验组患者治疗后复发及转移情况,分为有效组(67例)和无效组(28例),并进行预后因素分析。结果试验组总有效率高于对照组(P<0.05)。治疗后,两组患者的CD4^(+)均升高,CD8^(+)均降低,与对照组相比,试验组的CD4^(+)升高,CD8^(+)降低变化,差异有统计学意义(P<0.05)。单因素分析显示,无效组在年龄、肿瘤原发部位、腹腔积液量、卡氏功能状态(KPS)评分、癌胚抗原(CEA)、糖类抗原199(CA199)、糖类抗原125(CA125)等方面与有效组比较有差异(P<0.05)。Cox回归分析结果显示,肿瘤原发部位、KPS评分、腹腔积液量、CEA、CA199、CA125是消化道肿瘤伴恶性腹腔积液患者预后的独立影响因素(P<0.05)。结论CHPPC对消化道肿瘤伴恶性腹腔积液患者具有一定疗效,可改善其免疫功能,肿瘤原发部位、KPS评分、腹腔积液量、CEA、CA199、CA125等与消化道肿瘤伴恶性腹腔积液患者预后有关。

关键词：消化道肿瘤恶性腹腔积液循环腹腔热灌注化疗疗效预后

Electrochemical deposition of uranium oxide with an electrocatalytically active electrode using double potential step technique

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Chinese Chemical Letters 2022年第8期33卷 3762-3766页

作者： jie Huang Zhirong Liu Dejuan Huang Tianxiang jin yong qian Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang 330013China State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China

The development of effective uranium-removal techniques is of great significance to the environment and human *** this work,a double potential step technique(DPST)was applied to remove U(VI)from uranium-containing wastewater using a carbon felt electrode modified by graphene oxide/phytic acid composite(GO-PA@CF).The application of DPST can inhibit water splitting and prevent GO-PA from adsorbing other interfering ions in *** GO-PA composite can effectively accelerate the electrochemical reduction rate of U(VI),which significantly improved the electrochemical deposition rate of uranium *** a result,the maximum removal efficiency and maximum removal capacity of GOPA@CF electrode reached 98.7%and 1149.3 mg/g,*** removal efficiency remained 97.2%after five cycles of ***,the removal efficiency of GO-PA@CF electrode can reach more than 70%in simulated wastewater.

关键词： Electrochemical deposition Uranium Double potential step technique Graphene oxide Nanocomposites

Downward shift of gas hydrate stability zone due to seafloor erosion in the eastern Dongsha Island,South China Sea

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Journal of Oceanology and Limnology 2020年第4期38卷 1188-1200页

作者： jin Jiapeng wang Xiujuan HE Min LI jie YAN Chengzhi LI Yuanping ZHOU Jilin qian jin Key Laboratory of Marine Geology and Environment&Center of Deep-Sea Research Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Shenzhen Branch of China National Offshore Oil Corporation Ltd Shenzhen 518054China

New acquired and reprocessed three-dimensional(3D)seismic data were used to delineate the distribution and characterization of bottom simulating reflections(BSRs)in the Chaoshan Sag,in the eastern part of Dongsha Island,South China *** submarine canyons with different scales were interpreted from the 3D seismic data,displaying three stages of canyon development and are related with the variation of *** faults were identified from the coherence and ant-tracing attributions extracted from 3D seismic data,which provide the evidence for fluid migration from deeper sediments to the gas hydrate stability zone(GHSZ).The uplift of Dongsha Island created a large number of faults and leads to the increased seafloor *** erosion caused the cooling of the seafloor sediments and deepening of the base of the gas hydrate stability zone,which is attributed to the presence of paleo-BSR and BSR downward shift in the study ***,methane gas may be released during the BSR resetting and gas hydrate dissociation related with seafloor erosion.

关键词： bottom simulating reflections(BSRs) downward shift seafloor erosion gas hydrate dissociation

3D打印辅助C_(1/2)椎弓根钉固定治疗Ⅱ型齿状突骨折

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中国矫形外科杂志 2024年第11期32卷 1029-1032,1037页

作者：唐国栋杨倩倩王月香牟玲芳侯金婷任鹏杰高敏宋元进陆军第80集团军医院脊柱一科山东潍坊261000

[目的]介绍3D打印辅助C_(1/2)椎弓根钉固定治疗Ⅱ型齿状突骨折的手术技术和初步临床效果。[方法]对14例被诊断为Ⅱ型齿状突骨折的患者,术前定制3D模型及导航模板,完成术前手术模拟,确定内固定物尺寸、进钉点和深度。行后正中切口,单极... 详细信息

[目的]介绍3D打印辅助C_(1/2)椎弓根钉固定治疗Ⅱ型齿状突骨折的手术技术和初步临床效果。[方法]对14例被诊断为Ⅱ型齿状突骨折的患者,术前定制3D模型及导航模板,完成术前手术模拟,确定内固定物尺寸、进钉点和深度。行后正中切口,单极和双极电凝显露椎板、棘突后,将3D模型与相应椎板、小关节、棘突相匹配,术者用细钻头磨钻沿导板导航方向钻探,探查无误后置入椎弓根螺钉,连接钛棒固定。在确认骨折愈合3个月以后移除置入物。[结果]14例患者手术顺利完成,未出现椎动脉损伤、神经损伤或切口感染。与术前相比,术后6个月VAS评分[(7.3±0.8),(2.9±0.6),P<0.001]和NDI评分[(61.8±4.9),(32.1±3.0),P<0.001]显著降低。所有患者在术后9~12个月实现了骨折愈合,术后12个月左右拆除内固定物。与拆除内固定装置前相比,拆除内固定装置后7 d的颈椎旋转活动度[(55.8±7.0)°,(85.1±11.9)°,P<0.001]和NDI评分[(25.2±4.9),(10.3±2.7),P<0.001]均显著改善。[结论]3D打印辅助C_(1/2)椎弓根钉固定Ⅱ型齿状突骨折是一种有效的治疗方式,内固定取出后能显著恢复颈椎活动度。

关键词： Ⅱ型齿状突骨折 C_(1/2) 椎弓根钉固定 3D 打印

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前置臭氧-生物流化床工艺用于水厂提质改造

中国给水排水 2024年第12期40卷 94-100页

作者：彭锦玉李振邦张坤乾付成胜李玉江王全勇山东华城工程技术有限公司山东济南250101 山东大学环境科学与工程学院山东济南250100 高密市引调水工程运营维护中心山东潍坊261500

为进一步提高供水水质,满足《生活饮用水卫生标准》(GB 5749—2022)要求,山东某水厂(处理水量为4×10^(4) m^(3)/d)在常规工艺前增设了臭氧催化氧化-生物流化床工艺。新工艺投产后,滤池出水2-MIB与GSM降至检出限以下,氨氮降至0.02 mg/L... 详细信息

为进一步提高供水水质,满足《生活饮用水卫生标准》(GB 5749—2022)要求,山东某水厂(处理水量为4×10^(4) m^(3)/d)在常规工艺前增设了臭氧催化氧化-生物流化床工艺。新工艺投产后,滤池出水2-MIB与GSM降至检出限以下,氨氮降至0.02 mg/L以内,DOC降至2.7 mg/L,其中新增工艺对溶解性有机碳(DOC)去除贡献占比为88.8%,高通量测序结果表明生物流化床上负载了Gemmatimonas等微生物;沉淀池出水颗粒物总数自改造前的15959 CNT/mL降至4963 CNT/mL,形成的絮体具有三维密实的立体结构,滤后水颗粒物总数降至416 CNT/mL,浑浊度降至0.08 NTU;供水水质全面提升,且在连续运行中稳定可靠。实践证明,先行去除水中有机物的设计思路在该水厂行之有效,不但可高效去除2-MIB、DOC、氨氮等污染物,也提高了混凝脱稳效率,强化了后续常规处理工艺对颗粒物的去除效果。

关键词：臭氧催化氧化生物流化床 2-甲基异莰醇溶解性有机碳颗粒物

Comparing the precision of the pSOFA and SIRS scores in predicting sepsis-related deaths among hospitalized children:a multi-center retrospective cohort study

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World Journal of Emergency Medicine 2022年第4期13卷 259-265页

作者： Chun Zhao Mei-yun Xin jing Li jin-fang Zhao Yu-juan wang Wei wang qian Gao jie Chen Qi-wei wang You-peng jin Department of Pediatric Intensive Care Unit Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021China Department of Pediatrics Affiliated Hospital of Jining Medical UniversityJining 272129China Department of Pediatrics Qingdao Women and Children HospitalQingdao 266034China Department of Pediatric Intensive Care Unit Shandong Provincial HospitalCheeloo College of MedicineShandong UniversityJinan 250021China

BACKGROUND:The latest sepsis definition includes both infection and organ failure,as evidenced by the sequential organ failure assessment(SOFA)***,the applicability of the pediatric SOFA score(pSOFA)is not yet *** study evaluated the effectiveness of both pSOFA and system inflammatory reaction syndrome(SIRS)scores in predicting sepsis-related pediatric ***:This is a retrospective multi-center cohort study including hospitalized patients<18 years old with diagnosed or not-yet-diagnosed *** analyses were carried out to evaluate risk factors for in-hospital *** to Youden index(YI),three sub-categories of pSOFA were screened out and a new simplified pSOFA score(spSOFA)was *** effectiveness and accuracy of prediction of pSOFA,SIRS and spSOFA was retrieved from the area under the receiver operating characteristic curve(AUROC)and Delong’s ***:A total of 1,092 participants were eligible for this study,and carried a 23.4%in-hospital mortality *** 24-h elevated pSOFA score(24 h-pSOFA),bloodstream infection,and mechanical ventilation(MV)requirement were major risk factors associated with sepsis-related *** AUROC analysis confirmed that the spSOFA provided good predictive capability in sepsis-related pediatric deaths,relative to the 24 h-pSOFA and ***:The pSOFA score performed better than SIRS in diagnosing infected children with high mortality ***,it is both costly and ***,therefore,proposed spSOFA to accurately predict patient outcome,without the ***,additional investigations,involving a large sample population,are warranted to confirm the conclusion of this study.

关键词： Simple-pSOFA pSOFA Children Mortality Infection SIRS

Synthesis and biological evaluation of hydrazino-containing polyamine skeletons as drug delivery system

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Chinese Chemical Letters 2011年第1期22卷 119-122页

作者： Jian Hong wang Jun Jun Zhou Song Qing Xie qian Li jin Zhao Chao jie wang Key Lab of Natural Medicinal and Immunotechnology of Henan Province Henan University Kaifeng 475004 China

A new series of polyamine-toxic cargo conjugates was synthesized with aryl aldehydes conjugating to hydrazino-containing triamine skeletons. The in vitro cytotoxicity of target compounds was evaluated in several cancer cell lines （e.g., L I 210, HeLa and B16） and the cellular entry of these polyamine conjugates via polyamine transporter was investigated on SPD- or DFMO-treated B 16 cell line. Of these compounds, 6c show significant cytotoxicity on L 1210, HeLa and B 16 cell lines （IC50 value, 3.74 μmol/L, 5.66μmol/L and 4.04 μmol/L, respectively）. The polyamine transporter assay demonstrated the suitability of hydrazino-containing polyamine backbones for application as vectors in drug delivery systems.

关键词： Polyamine conjugates Polyamine transporter Synthesis Biological activity

Soil organic carbon contents, aggregate stability,and humic acid composition in different alpine grasslands in Qinghai-Tibet Plateau

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Journal of Mountain Science 2016年第11期13卷 2015-2027页

作者： CAO Zhi-yuan wang yong LI jie ZHANG jin-jing HE Nian-peng Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

Alpine grassland soils on Qinghai-Tibet Plateau store approximately 33.5 Pg of organic carbon(C) at 0–0.75 m depth and play an important role in the global carbon *** investigated soil organic C(SOC),water-soluble organic C(WSOC),easily oxidizable organic C(EOC),humic C fractions,aggregate-associated C,aggregate stability,and humic acid(HA) composition along an east-west transect across Qinghai-Tibet Plateau,and explored their spatial patterns and controlling *** contents of SOC,WSOC,EOC,humic C fractions and aggregate-associated C,the proportions of macroaggregates(2-0.25) and micro-aggregates(0.25-0.053 mm),and the aggregate stability indices all increased in the order alpine desert < alpine steppe < alpine *** alkyl C,O-alkyl C,and aliphatic C/aromatic C ratio of HA increased as alpine desert < alpine meadow < alpine steppe,and the trends were reverse for the aromatic C and HB/HI *** annual precipitation and aboveground biomass weresignificantly correlated with the contents of SOC and its fractions,the proportions of macro- and microaggregates,and the aggregate stability indices along this *** all these C fractions,SOC content and aggregate stability were more closely associated with humic C and silt and clay sized C in comparison with WSOC,EOC,and macro- and microaggregate *** results suggested that alpine meadow soils containing higher SOC exhibited high soil aggregation and aggregate *** annual precipitation should be the main climate factor controlling the spatial patterns of SOC,soil aggregation,and aggregate stability in this *** resistant and stable C fractions rather than labile C fractions are the major determinant of SOC stocks and aggregate stability.

关键词： Soil organic carbon Aggregate stability Humic acid Carbon-13 nuclear magnetic resonance Latitudinal transect Qinghai-Tibet Plateau