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南美地区油气地质特征及常规油气资源潜力

科学技术与工程 2024年第6期24卷 2307-2322页

作者：刘亚明马中振田作基中国石油勘探开发研究院北京100083

在分析南美油气地质特征的基础上,进行南美主要含油气盆地待发现常规油气资源评价,总结待发现油气资源分布规律,探讨其勘探前景。结果表明,受4大板块碰撞影响,南美沉积盆地可分成弧前、弧后、前陆、内克拉通和被动陆缘盆地5种类型。南... 详细信息

在分析南美油气地质特征的基础上,进行南美主要含油气盆地待发现常规油气资源评价,总结待发现油气资源分布规律,探讨其勘探前景。结果表明,受4大板块碰撞影响,南美沉积盆地可分成弧前、弧后、前陆、内克拉通和被动陆缘盆地5种类型。南美油气成藏条件优越,烃源岩以中新生界海相-陆相泥岩为主,生烃潜力大。储层以白垩系和第三系碎屑岩和碳酸盐岩为主,分布广泛。盖层中新生界区域性泥岩和盐岩为主,封堵能力强。采用以成藏组合为基础评价单元的资源评价方法,将南美65个盆地共划分出152个成藏组合,并进行了资源评价。预测南美65个主要含油气盆地的待发现石油可采资源量为263 716 MMB,待发现凝析油可采资源量为7 405 MMB,待发现天然气可采资源量为559 020 BCF。待发现油气资源在平面上呈“两带”展布、“两中心”富集特征;在纵向上主要富集于白垩系和第三系。被动陆缘盆地和前陆盆地是南美未来油气勘探的两个重点领域,其中深海和前陆冲断带是主要勘探方向,巴西、委内瑞拉是重点关注国家。

关键词：油气地质常规油气资源评价勘探潜力南美洲

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无机抗病毒材料在纺织领域的研究现状

合成纤维 2024年第3期53卷 32-37页

作者：吴蒙刘亚明孟家光西安工程大学纺织科学与工程学院陕西西安710048

综述了抗病毒纺织品的研究现状,以及无机抗病毒材料与纺织品结合的方法和应用现状,并对抗病毒纺织品的研究应用进行了展望,旨在为抗病毒纺织品的进一步研发提供参考,促进抗病毒纺织品的研究开发。

关键词：无机抗病毒材料抗菌纺织品应用

Turbulence Modulations in the Boundary Layer of a Horizontal Particle-Laden Channel Flow

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Chinese Physics Letters 2010年第6期27卷 129-132页

作者： LI Jing liu Zhao-Hui WANG Han-Feng CHEN Sheng liu ya-ming HAN Hai-Feng ZHENG Chu-Guang State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074

Turbulence modulations are experimentally investigated using particle image velocimetry （PIV） in the lower boundary layer of a fully developed horizontal channel flow. A simultaneous two-phase PIV measurement technique is adopted to acquire the turbulent statistics quantities and to examine the coherent structures in the near-wall region. Polythene beads with diameters of 60 μm are used as dispersed phases, and the PIV measurements have been performed at three mass loadings varying from 2.5 ×10^-4 to 5 × 10^-3. All the experiments are performed at a wall shear Reynolds number of Reτ = 430. The results show that the presence of the particles suppresses the coherent structures, with shorter streamwise extent of the quasistrearnwise structures, and then, the wall-normal velocity fluctuations and shear Reynolds stresses are both decreased in the near-core region. In addition, as a result of the particle wake, the turbulence intensity and shear Reynolds stress both increase in the vicinity of the wall. Due to the drag effects of the particles on the gas, the streamwise velocity gradients decrease in the outer region and increase in the viscous sublayer, meanwhile the thickness of the viscous sublayer also decreases. These results cause the peak values of the streamwise velocity fluctuations adjacent to the wall to increase, and the peak positions shift to the wall. This is the reason for decreasing the near-wall region and increasing the near-core region of the streamwise velocity fluctuations in appearance.

关键词： Uses Experimentation Measurement Walls Dispersants Stress Timing Time Shears Shearing

Impact of immunotherapy on liver metastasis

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 1969-1972页

作者： Zhuo Fu ming-Wei Wang ya-Hui liu yan Jiao Medical College Inner Mongolia Minzu UniversityTongliao 028000Inner Mongolia Autonomous RegionChina Ministry of Health Key Laboratory of Radiobiology School of Public Health of Jilin UniversityChangchun 130000Jilin ProvinceChina Department of Hepatobiliary and Pancreatic Surgery General Surgery CenterThe First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

This editorial discusses the article“Analysis of the impact of immunotherapy efficacy and safety in patients with gastric cancer and liver metastasis”published in the latest edition of the World Journal of Gastrointestinal *** has achieved outstanding success in tumor ***,the presence of liver metastasis(LM)restrains the efficacy of immunotherapy in various tumors,including lung cancer,colorectal cancer,renal cell carcinoma,melanoma,and gastric cancer.A decrease in CD8+T cells and nature killer cells,along with an increase in macrophages and regulatory T cells,was observed in the microenvironment of LM,leading to immunotherapy *** studies are necessary to determine the best strategy for enhancing the effectiveness of immunotherapy in patients with LM.

关键词： Immunotherapy Liver metastasis Tumor microenvironment Resistance T cells

Solidification crack characteristics and sensitivity of peritectic steel

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Journal of Iron and Steel Research International 2024年第7期31卷 1668-1679页

作者： ya-qiang Li Jian-hua liu Zi-ming Wang Ying-ying Li yang He Xiao-wei Li Department of Automotive Engineering Hebei Vocational University of Technology and EngineeringXingtai 054000HebeiChina Hebei Special Vehicle Modification Technology Innovation Center Hebei Vocational University of Technology and EngineeringXingtai 054000HebeiChina Institute of Engineering Technology University of Science and Technology BeijingBeijing 100083China School of Petroleum and Natural Gas Engineering Changzhou UniversityChangzhou 213164JiangsuChina

The characteristics and sensitivity of solidification cracks in peritectic steels were investigated using directional solidifi-cation *** cracks were observed in both hypoperitectic steels(12CrlMoV,15CrMo)and hyper-peritectic steel(20CrMo)during solidification at growth velocities of 15,50,and 80 pm/*** the dendritic boundaries,sulphide precipitates were found,promoting crack *** on the statistical analysis of interdendritic cracks in peritectic steels,the area ratio(RA)of interdendritic cracks in a directional solidification structure was proposed to evaluate the crack sensitivity of peritectic ***,the crack sensitivities of peritectic steels(12CrlMoV,15CrMo,and 20CrMo)were tested,evaluated,and compared with the surface crack rates of three types of steels produced from a steel *** results demonstrated that RA was in good agreement with that of the steel plant,and the crack sensitivity of 12CrlMoV steel was the strongest,followed by that of 15CrMo and 20CrMo ***,RA can be used to evaluate the crack sensitivity of peritectic steel.

关键词： Peritectic steel-Directional solidification Growth velocity Dendritic structure Solidification crack Crack sensitivity

Epidemiology of respiratory distress and the illness severity in late preterm or term infants： a prospective multi-center study

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Chinese Medical Journal 2010年第20期123卷 2776-2780页

作者： MA Xi'ao-lu XU Xue-feng CHEN Chao yaN Chao-ying liu ya-ming liu Ling XIONG Hong SUN Hui-qing LAI Jian-pu YI Bin SHI Jing-yun DU Li-zhong Neonatology Department Children's Hospital of Zhejiang University School of MedicineHangzhouZhejiang 310003China Neonatology Department Children's Hospital of Fudan UniversityShanghai 201102China Pediatric Department First Affiliated Hospital of Jilin UniversityChangchunJilin 130021China Neonatology Department Guiyang Children's HospitalGuiyangGuizhou 550003China Neonatology Department Zhengzhou Children's HospitalZhengzhouHenan 450053China Neonatology Department Guangzhou Children's HospitalGuangzhouGuangdong 510120China Neonatology Department Gansu Provincial Women and Children's HospitalLanzhouGansu 730050China

Background The severity of respiratory distress was associated with neonatal prognosis. This study aimed to explore the clinical characteristics, therapeutic interventions and short-term outcomes of late preterm or term infants who required respiratory support, and compare the usage of different illness severity assessment *** Seven neonatal intensive care units in tertiary hospitals were recruited. From November 2008 to October 2009, neonates born at ≥34 weeks＇ gestational age, admitted at 〈72 hours of age, requiring continuous positive airway pressure （CPAP） or mechanical ventilation for respiratory support were enrolled. Clinical data including demographic variables, underlying disease, complications, therapeutic interventions and short-term outcomes were collected. All infants were divided into three groups by Acute care of at-risk newborns （ACoRN） Respiratory Score 〈5, 5-8, and 〉*** During the study period, 503 newborn late preterm or term infants required respiratory support. The mean gestational age was （36.8±2.2） weeks, mean birth weight was （2734.5±603.5） g. The majority of the neonates were male （69.4%）, late preterm （63.3%）, delivered by cesarean section （74.8%）, admitted in the first day of life （89.3%） and outborn （born at other hospitals, 76.9%）. Of the cesarean section, 51.1% were performed electively. Infants in the severe group were more mature, had the highest rate of elective cesarean section, Apgar score 〈7 at 5 minutes and resuscitated with intubation, the in-hospital mortality increased significantly. In total, 58.1% of the patients were supported with mechanical ventilation and 17.3% received high frequency oscillation. Adjunctive therapies were commonly *** rate of infants in severe group needed mechanical ventilation or high frequency oscillation, volume expansion,bicarbonate infusion or vasopressors therapy （P 〈0.05）. The incidence of complications was also increased significantly in severe group （P 〈0.05）. The in-

关键词： infant, newborn intensive care, neonatal severity of illness index respiratory distress syndrome

Enhanced Crystallization of Poly(butylene adipate-co-terephthalate)by a Self-assembly Nucleating Agent

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Chinese Journal of Polymer Science 2024年第5期42卷 663-674,I0010页

作者： Cheng Zhou Kun Chen Zi-Heng Zhang Meng-Fan Jing Chun-Tai liu Chang-Yu Shen ya-ming Wang State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou450002China

Poly(butylene adipate-co-terephthalate)(PBAT)is a promising biodegradable flexible polymer but suffers from slow crystallization rate,making it less attractive for some applications like the injection-molded products in comparison with low-density polyethylene(LDPE).This work aimed to accelerate the crystallization of PBAT by adding a self-assembly nucleating agent octamethylenedicarboxylic dibenzoylhydrazide(OMBH).PBAT/OMBH composites with various OMBH contents(0 wt%,0.5 wt%,0.7 wt%,1 wt%,2 wt%,3 wt%and 5 wt%)were prepared through *** effect of OMBH on the crystallization behavior,morphologies and mechanical properties of PBAT was *** highest nucleation efficiency value of 59.6%was achieved for PBAT with 0.7 wt%OMBH,much higher than that of 22.7%for PBAT with 0.7 wt%*** force microscopy results showed that OMBH formed fine fibers and induced the formation of transcrystalline layers of *** transform infrared spectroscopy(FTIR)combined with two-dimensional correlation spectra suggested that the intermolecular dipole-dipole N—H…O=C interactions but not hydrogen bond between OMBH and PBAT promoted the crystallization of PBAT in the initial period of *** presence of OMBH did not change the crystal form of PBAT but had positive contribution in enhancing its crystallinity and mechanical *** work is essential for preparing PBAT with high crystallization rate,enhancing its potential applications in injection-molded products.

关键词： Poly(butylene adipate-co-terephthalate) Biodegradable Self-assembly nucleating agent Crystallization

Subsurface multi-physical characterization of mountain excavation and city construction in loess plateau with a fiber-optic sensing system

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 2935-2946页

作者： Jie liu Bin Shi Kai Gu Meng-ya Sun Jun-Cheng yao He-ming Han School of Earth Sciences and Engineering Nanjing UniversityNanjingJiangsu210023China Frontiers Science Center for Critical Earth Material Cycling Nanjing UniversityNanjing210023China School of Earth Sciences and Engineering Hohai UniversityNanjing210098China

Mountain excavation and city construction(MECC)projects being launched in the Loess Plateau in China involve the creation of large-scale artificial *** the subsurface evolution characteristics of the artificial land is essential,yet ***,we use an improved fiber-optic monitoring system for its subsurface multi-physical *** system enables us to gather spatiotemporal distribution of various parameters,including strata deformation,temperature,and ***’an New District was selected as a case study to conduct refined in-situ monitoring through a 77 m-deep borehole and a 30 m-long *** reveal that the ground settlement involves both the deformation of the filling loess and the underlying intact ***,the filling loess exhibits a stronger creep capability compared to underlying intact *** deformation along the profile is unevenly distributed,with a positive correlation with soil *** accumulation has been observed at the interface between the filling loess and the underlying intact loess,leading to a significant ***,the temperature and moisture in the filling loess have reached a new equilibrium state,with their depths influenced by atmospheric conditions measuring at 31 m and 26 m,*** refined investigation allows us to identify critical layers that matter the sustainable development of newly created urban areas,and provide improved insights into the evolution mechanisms of land creation.

关键词： Mountain excavation and city construction Fiber-optic monitoring Multi-physical characterization Compacted loess

Hierarchically Macroporous Zeolite ZSM-5 Microspheres for Efficient Catalysis

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Chemical Research in Chinese Universities 2024年第4期40卷 704-711页

作者： ZHENG mingdan CHEN ya liu Zhan LYU Jiamin YE Bo SUN ming-Hui CHEN Li-Hua SU Bao-Lian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070P.R.China Laboratory of Inorganic Materials Chemistry(CMI) University of Namur5000NamurWalloniaBelgium

Hollow zeolite microspheres have recently attracted much attention for their applications in catalysis,microreactors and ***,we present hierarchically structured zeolite ZSM-5 microspheres with unique,abundant macropores that allow more efficient use for *** hierarchically macroporous zeolite ZSM-5 microspheres are synthesized under the assistance of water/oil emulsions and using polystyrene nanospheres as *** zeolite microsphere is assembled by uniform hollow zeolite *** large inner cavities and thin zeolite shells lead to smaller diffusion channel and higher improved accessibility to active sites,contributing to high catalytic performance in the catalytic conversion of benzyl alcohol in *** novel zeolite microspheres with impressive performance will be applied to numerous other industrial catalytic reactions.

关键词： Hierarchically porous structure Hollow structure Microsphere Zeolite ZSM-5 Alkylation