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Defence Technology（防务技术） 2023年第4期22卷 74-87页

作者： yong kou Yi Wang Jun Zhang Kai-ge Guo Xiao-lan Song School of Environment and Safety Engineering North University of ChinaTaiyuanShanxi030051China School of Materials Science and Engineering North University of ChinaTaiyuanShanxi030051China School of Ordance Engineering Naval University of EngineeringWuhanHubei430033China School of Chemical Engineering Nanjing University of Science and TechnologyNanjingJiangsu210094China

Aluminum(Al)powder is widely used in solid *** particular,nano-Al has attracted extensive scholarly attention in the field of energetic materials due to its higher reactivity than ***,the existence of aluminum oxide film on its surface reduces the heat release performance of the aluminum powder,which greatly limits its ***,this paper used iron,a component of solid propellant,to coat micron-Al and nano-Al to improve the heat release efficiency and reactivity of Al ***,TEM,EDS,XRD,XPS,and BET were used to investigate the morphological structure and properties of pure Al and Fe/Al composite fuels of different *** results show that Fe was uniformly coated on the surface of Al *** was no reaction between Fe and Al,and Fe/Al composite fuels had a larger specific surface area than pure Al,which could better improve the reactivity of pure ***,the catalytic effects of pure Al and Fe/Al composite fuels of different sizes on ammonium perchlorate and ammonium nitrate were *** results show that the catalysis of pure Al powder could be greatly improved by coating Fe on the surface of Al ***,the micron-Fe/Al composite fuel had a higher catalytic effect than the pure nano-Al ***,Fe/Al composite fuels are expected to be widely used in solid propellants.

关键词： Aluminum Fe/Al composite fuel High reactivity Thermal decomposition AP AN

Prognostic implications of ferroptosis-associated gene signature in colon adenocarcinoma

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World Journal of Clinical Cases 2021年第29期9卷 8671-8693页

作者： Yan-Dong Miao Zhi-yong kou Jiang-Tao Wang Deng-Hai Mi The First Clinical Medical College Lanzhou UniversityLanzhou 730000Gansu ProvinceChina Department of Oncology The First Affiliated Hospital of Kunming Medical UniversityKunming 650000Yunnan ProvinceChina Dean’s Office Gansu Academy of Traditional Chinese MedicineLanzhou 730000Gansu ProvinceChina

BACKGROUND Colon adenocarcinoma(COAD)is one of the most common and fatal malignant tumors,which increases the difficulty of prognostic ***,new biomarkers for the diagnosis and prognosis of COAD should be *** is a recently identified programmed cell death process that has the characteristics of iron-dependent lipid peroxide ***,the predictive value of ferroptosis-related genes(FRGs)for COAD still needs to be further *** To identify some critical FRGs and construct a COAD patient prognostic signature for clinical *** The Cancer Genome Atlas database(TCGA)and Gene Expression Omnibus databases were the data sources for mRNA expression and corresponding COAD patient clinical *** expressed FRGs were recognized using R and Perl *** constructed a multi-FRG signature of the TCGA-COAD cohort by performing a univariate Cox regression and least absolute shrinkage and selection operator Cox regression *** patients from the Gene Expression Omnibus cohort were utilized for *** Our research showed that most of the FRGs(85%)were differentially expressed between the corresponding adjacent normal tissues and cancer tissues in the TCGA-COAD *** FRGs were related to overall survival(OS)in the univariate Cox analysis(all P1,P<0.01).The predictive capacity of the model was verified by a receiver operating characteristic curve *** addition,a nomogram based on the expression of five hub FRGs and risk score can precisely predict the OS of individual COAD cancer p

关键词： Colon adenocarcinoma Ferroptosis Immune status Prognosis Overall survival

New insights in nano-copper chromite catalyzing ultrafine AP:Evaluation of dispersity and mixing uniformity

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Defence Technology（防务技术） 2024年第2期32卷 120-133页

作者： yong kou Peng Luo Lei Xiao Yanping Xin Guangpu Zhang Yubing Hu Junqing Yang Hongxu Gao Fengqi Zhao Wei Jiang Gazi Hao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an North Huian Chemical Industry Co.Ltd Xi'an710302China Xi'an Modern Chemistry Research Institute Xi'an710065China

Improving the application of nanomaterials has always been a research hotspot in the field of energetic materials(EMs)due to their obvious catalytic effect on the EMs,especially the uniformly dispersed ***,few studies have reported the dispersion of *** this study,the dispersity and mixing uniformity of nano-CuCr_(2)O_(4)was evaluated based on the difference of solid UV light absorption between the nano-catalytic materials and *** nano-CuCr_(2)O_(4)/ultrafine AP composites with different dispersity of nano-CuCr_(2)O_(4)were prepared by manual grinding and mechanical grinding with different grinding strength and griding *** then,the absorbance of different samples at 212 nm was obtained by solid UV testing due to the high repeatability of the absorbance at 210-214 nm for three parallel experiments,and the dispersity of different samples was calculated through the established difference ***,the samples were characterized by XRD,IR,SEM,EDS,DSC and TG-MS,which confirmed that different mixing methods did not change the structure of the samples(XRD and IR),and the mixing uniformity improved with the increase of grinding strength and grinding time(SEM and EDS).The scientificity and feasibility of the difference equation were further verified by *** dispersity of nano-CuCr_(2)O_(4)exhibits a positive intrinsic relationship with its catalytic performance,and the uniformly dispersed nano-CuCr_(2)O_(4)significantly reduces the thermal decomposition temperature of ultrafine AP from 367.7 to 338.8℃.The TG-MS patterns show that the dispersed nano-CuCr_(2)O_(4)advanced the thermal decomposition process of ultrafine AP by about 700 s,especially in the high temperature decomposition stage,and the more concentrated energy release characteristic is beneficial to further enhance the energy performance of AP-based *** above conclusions show that the evaluation method of dispersity based on solid UV curves could pro

关键词： Nano-CuCr_(2)O_(4) Ultrafine AP Dispersity UVeVis diffuse reflectance spectroscopy Thermal decomposition

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坨11区块泡沫驱油的室内研究与现场实践

油田化学 2005年第2期22卷 184-187页

作者：寇永强中国石化集团胜利石油管理局井下作业二公司山东东营257077

胜利油田坨11区块稠油油藏水驱开发已进入高含水期.油藏地温～60℃,平均渗透率～1.5 μm2,地层水矿化度12.4 g/L,含Ca2++M2+580 mg/L.筛选出了发泡剂DP-4,其5 g/L溶液形成的氮气泡沫表现粘度μa=789.5 mPa·s,阻力系数FR=1579,残余阻力... 详细信息

胜利油田坨11区块稠油油藏水驱开发已进入高含水期.油藏地温～60℃,平均渗透率～1.5 μm2,地层水矿化度12.4 g/L,含Ca2++M2+580 mg/L.筛选出了发泡剂DP-4,其5 g/L溶液形成的氮气泡沫表现粘度μa=789.5 mPa·s,阻力系数FR=1579,残余阻力系数FRR=186,加入聚合物HPAM(0.5～2.5 g/L)对μa和FR影响不大,但使FRR急剧增至488.5～737.0.气液比为1:1和2:1时聚合物复合氮气泡沫的FR均在1500以上,表明该泡沫体系有强封堵能力;FR随渗透率增大(0.7～10μm2)由1100增至4200,表明该泡沫体系的封堵具有渗透率选择性.在油饱和人造岩心上,在水驱之后注入DP-4/HPAM氮气泡沫使采收率由54%提高至79%.在坨11北区1口油井注入DP-4/HPAM(10～5/2.0～1.8 g/L)氮气泡沫,气液比1:1,共注入地面氮气6.044×105m3,DP-434.75 t,HPAM 1.1t,周围4口同层位油井平均含水由71.5%降至44.7%,15个月增产油12072 t,减产水6445m3,且仍处于增产有效期.图4表2参2.

关键词：水基泡沫聚合物稳定泡沫氮气泡沫配方研究封堵能力驱油能力泡沫驱油高含水油藏稠油油藏胜利坨11区块

Temperature effect on shear behavior of ore-backfill coupling specimens at various shear directions

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Journal of Central South University 2021年第10期28卷 3173-3189页

作者： JIANG Fei-fei ZHOU Hui SHENG Jia LI Xiang-dong kou yong-yuan State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China National Engineering Research Center for Metal Mining Changsha Institute of Mining Research Co.Ltd.Changsha 410012China School of Resource&Environment and Safety Engineering Hunan University of Science and TechnologyXiangtan 411201China Jinchuan Group Co. Ltd.Jinchang 737104China

Understanding the temperature effect on shear behavior of the ore-backfill coupling structure is critical for the safety and stability of backfill stope under the condition of high horizontal stress in deep *** shear tests were carried out on the cemented rod-mill sand backfill(CRB)and ore-CRB(OCRB)coupling specimens at various temperatures(20,40 and 60°C).The shear behavior and AE characteristic parameters of OCRB at different shear directions were compared and *** results show that the temperature effect on the shear performance of CRB mainly depends on the characteristics of microstructures and main mineral phases;the performance of CRB at 40°C is relatively good;the shear deformation of OCRB has one more“peak fluctuation stage”than CRB and has a good correlation with AE characteristic *** temperature can positively or negatively impact the shear strength of OCRB,depending on the temperature and shear direction;the shear performance of OCRB along the axis direction(D1)is significantly better than that perpendicular to the axis direction(D2).The co-bearing capacity of the ore-backfill coupling structure(i.e.,stopes)is closely related to the ambient temperature and principal stress orientation.

关键词： cemented backfill ore-backfill temperature shear direction shear strength AE energy

Underwater Digital Terrain Model with GPS-aided High-resolution Profile-scan Sonar Images

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Journal of Shanghai Jiaotong university(Science) 2008年第2期13卷 233-238页

作者：周拥军寇新建 School of Naval Architecture Ocean and Civil EngineeringShanghai Jiaotong University

The whole procedures of underwater digital terrain model (DTM) were presented by building with the global positioning system (GPS) aided high-resolution profile-scan sonar *** algorithm regards the digital image scanned in a cycle as the raw *** the label rings are detected with the improved Hough transform (HT) method and followed by curve-fitting for accurate location;then the most probable window for each ping is detected with weighted neighborhood gray-level co-occurrence matrix;and finally the DTM is built by integrating the GPS data with sonar data for 3D *** case of an underwater trench for immersed tube road tunnel is illustrated.

关键词： digital terrain model high-resolution sonar Hough transform neighborhood gray-level co-occurrence matrix

Effects of temperature and age on physico-mechanical properties of cemented gravel sand backfills

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Journal of Central South University 2020年第10期27卷 2999-3012页

作者： JIANG Fei-fei ZHOU Hui SHENG Jia kou yong-yuan LI Xiang-dong State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China National Engineering Research Center for Metal Mining Changsha Institute of Mining Research Co.Ltd.Changsha 410012China School of Resource&Environment and Safety Engineering Hunan University of Science and TechnologyXiangtan 411201China Jinchuan Group Co. Ltd.Jinchang 737104China

Cemented backfill used in deep mines would inevitably be exposed to the ambient temperature of 20−60℃in the next few *** this paper,two types of cemented gravel sand backfills,cemented rod-mill sand backfill(CRB)and cemented gobi sand backfill(CGB),were prepared and cured at various temperatures(20,40,60℃)and ages(3,7,28 d),and the effects of temperature and age on the physico-mechanical properties of CRB and CGB were investigated based on laboratory *** show that:1)the effects of temperature and age on the physico-mechanical properties of backfills mainly depend on the amount of hydration products and the refinement of cementation *** temperature has a more significant effect on thermal expansibility and ultrasonic performance at early ages.2)The facilitating effect of temperature and age on the compressive strength of CGB is higher than that on *** the increase of temperature,the compressive failure modes changed from X-conjugate shear failure to tensile failure,and the integrity of specimens was significantly improved.3)Similarly,the shear performance of CGB is generally better than that of *** temperature has a weaker effect on shear strength than age,but the shear deformation and shear plane morphology are closely related to temperature.

关键词： cemented backfill gravel sand temperature physico-mechanical properties deformation characteristics

青藏高原东部高山森林的地上固碳速率:未来森林管理方案的影响

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Journal of Plant Ecology 2023年第3期16卷 177-190页

作者： Yang Lin Jiang-Tao Xiao yong-Ping kou Jia-Xing Zu Xin-Ran Yu Yuan-Yuan Li Ministry of Education Key Laboratory of Land Resources Evaluation and Monitoring in Southwest China Sichuan Normal UniversityChengdu 610066China School of Geography and Resource Science Sichuan Normal UniversityChengdu 610101China CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China Ministry of Education Key Laboratory of Environment Change and Resources Use in Beibu Gulf Nanning Normal UniversityNanning 530001China

青藏高原东部的高山森林是长江上游的重要生态屏障。然而,由于近几十年来持续的高强度采伐,大量的人工种植,以及完全的禁伐等措施,导致树木种类与年龄结构变得相对单一,生物多样性和生态功能都有所下降。为设计有效的森林管理方案,以优... 详细信息

青藏高原东部的高山森林是长江上游的重要生态屏障。然而,由于近几十年来持续的高强度采伐,大量的人工种植,以及完全的禁伐等措施,导致树木种类与年龄结构变得相对单一,生物多样性和生态功能都有所下降。为设计有效的森林管理方案,以优化森林结构,提高森林碳汇能力,本研究以四川茂县为研究地点,利用LANDIS-II模型对6种不同强度的森林管理方案(采伐、种植)进行测试,模拟和比较了这些方案与当前管理方案在未来100年间森林地上固碳速率的差异。研究结果表明:(i)与目前的管理方案相比,不同强度的采伐和种植明显改变了森林地上固碳速率;(ii)不同群落对管理方案的反应不同,不同的管理方案对寒温带针叶林和温带针叶林的地上固碳速率有显著的影响(P<0.05),但对阔叶林影响较小;(iii)应综合物种、群落和景观3个层面全面考虑森林管理方案。这些结果说明,在研究地点实施较长的采伐和种植间隔(20年)可以最大限度地提高森林的地上固碳速率。该研究为评估森林管理方案在恢复森林生态和增加碳汇功能的能力,以及为在青藏高原东部地区选择有效的森林管理方案提供了重要参考。

关键词：地上固碳速率物种与群落森林管理生态过程森林景观模型高山森林青藏高原

用科学发展观破解郑州大学发展进程中的“三大课题”

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郑州大学学报（哲学社会科学版） 2006年第3期39卷 5-8页

作者：郑永扣郑州大学马克思主义哲学研究中心河南郑州450001

在对外开放和社会主义市场经济条件下,如何办好社会主义新型大学;在经济相对落后的内陆地区和资源比较匮乏的条件下,如何创建全国一流大学;在三校合并、多校区运行且又缺乏现成经验的复杂局面下,如何领导和管理好巨型大学。这三大课题... 详细信息

在对外开放和社会主义市场经济条件下,如何办好社会主义新型大学;在经济相对落后的内陆地区和资源比较匮乏的条件下,如何创建全国一流大学;在三校合并、多校区运行且又缺乏现成经验的复杂局面下,如何领导和管理好巨型大学。这三大课题与学校的整体发展和未来走向密切相关,关系到学校大政方针的制定,牵涉到学校教学、科研、管理的方方面面。在深入调研、科学论证的基础上,创造性地做好“三大课题”的研究工作,破解学校建设和发展中的重大矛盾和问题,这不仅对郑州大学创建全国一流大学具有重大现实意义和深远的战略意义,而且对我国高等教育的发展也将会有积极的借鉴意义。

关键词：科学发展观高等教育郑州大学

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基于元胞自动机的民航运输产业竞争演化模拟

系统工程理论与实践 2011年第9期31卷 1680-1686页

作者：寇勇刚吴桐水柳青南京航空航天大学民航学院南京210016 中国民航大学经管学院天津300300

为研究民航运输产业的竞争演化,考虑航空公司的资源竞争力、职能竞争力、核心竞争力及动态核心能力四层次竞争力等因素,建立了元胞自动机模型.以中美两国民航运输产业的竞争演化为例,对主导元胞(航空公司)和支持元胞(机场)的协同发展及... 详细信息

为研究民航运输产业的竞争演化,考虑航空公司的资源竞争力、职能竞争力、核心竞争力及动态核心能力四层次竞争力等因素,建立了元胞自动机模型.以中美两国民航运输产业的竞争演化为例,对主导元胞(航空公司)和支持元胞(机场)的协同发展及其盈利状况进行了模拟研究.研究结果表明,美国民航业放松航空管制后因航空公司动态核心能力不强,行业整体盈利状况不佳;我国民航业半放松管制后,盈利状况也不容乐观.然而,提高航空公司的动态核心能力既可以避免美国民航业发展中经营惨淡的局面,同时又能促进我国民航业的快速发展.

关键词：元胞自动机民航运输产业航空公司核心竞争力动态核心能力演化