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Petroleum Science 2024年第4期21卷 2383-2392页

作者： li-ming zhao Cai-Ping Lu Yang liu Chao-Chao li School of Mines China University of Mining and Technology Henan Institute of Geophysical Space Information

The similarities and differences in inherent mechanism and characteristic frequency between the onedimensional(1D) poroelastic model and the layered White model were investigated. This investigation was conducted under the assumption that the rock was homogenous and isotropic at the mesoscopic scale. For the inherent mechanism, both models resulted from quasi-static flow in a slow P-wave diffusion mode, and the differences between them originated from saturated fluids and boundary conditions. On the other hand, for the characteristic frequencies of the models, the characteristic frequency of the 1D poroelastic model was first modified because the elastic constant and formula for calculating it were misused and then compared to that of the layered White model. Both of them moved towards higher frequencies with increasing permeability and decreasing viscosity and diffusion length. The differences between them were due to the diffusion length. The diffusion length for the 1D poroelastic model was determined by the sample length, whereas that for the layered White model was determined by the length of the representative elementary volume(REV). Subsequently, a numerical example was presented to demonstrate the similarities and differences between the models. Finally, published experimental data were interpreted using the 1D poroelastic model combined with the Cole-Cole *** prediction of the combined model was in good agreement with the experimental data, thereby validating the effectiveness of the 1D poroelastic model. Furthermore, the modified characteristic frequency in our study was much closer to the experimental data than the previous prediction, validating the effectiveness of our modification of the characteristic frequency of the 1D poroelastic model. The investigation provided insight into the internal relationship between wave-induced fluid flow(WIFF)models at macroscopic and mesoscopic scales and can aid in a better understanding of the elastic modulus d

关键词： 1D poroelastic model Layered White model Quasi-static flow Slow P-wave diffusion Characteristic frequency Diffusion length

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Vertical two-dimensional WS_(2)flakes grown on flexible CNT film for excellent electrochemical performance

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Rare Metals 2024年第1期43卷 164-174页

作者： Qian Gong Jing-Yun Zou ming Ren Si-Qi Zhu Yu-Rong Zhou li-ming zhao Jian Chen Yu-Long Wu Jiang-Tao Di li-Xing Kang Qing-Wen li School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced MaterialsSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and TechnologySuzhou University of Science and TechnologySuzhou 215009China

Soft electrochemical actuators that can generate mechanical motions in response to electrical stimuli can be used as artificial muscles in microscale *** electrode materials are the key component of the electrochemical actuator because they limit the ion diffusion and accumulation processes and thus affect the deformation in fast response-time and potential engineering ***-dimensional materials,such as one-dimensional(1D)CNT and two-dimensional(2D)vertically stood WS_(2),are great electrode due to their good electrochemical stability and high surface-to-volume ratios,but show limited performances when being used on their own in the actuators because of low reconstruction or low conductivity.A combination of 1D CNT and 2D WS_(2)could form a heterojunction with both high electrochemical activity and great mechanical ***,by depositing highly disordered graphene nanosheets(HDGNs)on CNT films and then WS_(2)on the formed low-dimensional nanocarbon film,a hybrid WS_(2)/HDGN/CNT film was synthesized through a multistep CVD *** grown WS_(2)nanosheets were achieved by taking advantage of HDGNs which limits CNTs ***,the volume expansion caused by the transition from WO_(3)to WS-2can force the vertical growth of WS_(2).This hybrid film shows excellent electrochemical properties,such as high specific capacitance and high rate *** actuators based on the WS_(2)/HDGN/CNT films show good actuating performance,including stability and reconfigurability.

关键词： CNT Graphene Vertically growth WS_(2) Electrochemical actuators

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Application of horticulture therapy as a health intervention for elderly people in nursing homes:a scoping review

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Frontiers of Nursing 2024年第3期11卷 231-242页

作者： Jing-Jing Wang Xiao-Yu Niu ming-li zhao Department of Community Health Nursing School of Nursing and HealthZhengzhou UniversityZhengzhouHenan 450007China Department of Nursing Shanghai Fifth People’s HospitalFudan UniversityShanghai 200240China

Objective:To review the scope of interventional studies on horticultural therapy(HT)applied to elderly people in nursing institutions to support the efficient implementation of HT among this target ***:In accordance with the scoping review framework proposed by the Joanna Briggs Institute(JBI),the Pub Med,JSTOR,Web of Science,CNKI,and Wanfang databases were *** from the retrieved literature were summarized and ***:In all,18 studies were included in this *** target population groups of interventions included self-supporting elderly people,cognitively impaired elderly people,elderly people with negative emotions,and elderly people with frailty living in nursing *** interventions,including planting,craft activities,derivative activities,and outdoor viewing activities,are implemented indoors,outdoors,or in mixed *** most common duration of the intervention was 8 weeks,the most common frequency was once per week,and the most common session duration was 60 ***:The measurements used in HT interventions included assessments of physical,psycho-mental,and social health;quality of life;and activity *** studies should include partially dependent groups and completely dependent groups of elderly individuals,interventions that last at least 6 months,scientifically designed activity intensity and safety-guarantee plans,and outcomeevaluation indicators such as compliance and intervention benefits.

关键词： elderly people horticultural therapy intervention nursing home scoping review

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蓬探1井区灯二段底水气藏水侵机理

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科学技术与工程 2024年第23期24卷 9729-9736页

作者：李娟汪周华欧家强李钊名杨洋吴金川李松岑中国石油天然气股份有限公司西南油气田分公司川中北部采气管理处遂宁629000 西南石油大学油气藏地质及开发工程国家重点实验室成都610500

蓬探1井区灯二段气藏属于典型的超深层碳酸盐岩底水气藏,水侵是影响气藏开发效果的重要问题。目前气藏处于开发早期评价阶段,对气藏水侵机理认识模糊,制约了气藏开发技术政策的制定。基于气藏现有动静态资料,利用数值模拟手段建立不同... 详细信息

蓬探1井区灯二段气藏属于典型的超深层碳酸盐岩底水气藏,水侵是影响气藏开发效果的重要问题。目前气藏处于开发早期评价阶段,对气藏水侵机理认识模糊,制约了气藏开发技术政策的制定。基于气藏现有动静态资料,利用数值模拟手段建立不同开发区单井机理模型,开展水侵模式预判、水侵动态主控因素分析。研究表明,蓬探1井区不同类型储层隔夹层发育,隔夹层遮挡作用显著,水侵模式总体表现为水锥型与水脊型;配产比与避水高度分别是影响两类开发区水侵程度与开发效果的主控因素;对水侵机理认识为蓬探1井区开发技术政策制订提供了技术支撑。

关键词：底水气藏水平井合理配产避水高度水平段长度

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玻璃化冷冻囊胚复苏后不同体外培养时间对临床妊娠结局的影响

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生殖医学杂志 2024年第7期33卷 860-865页

作者：杨喆东李波薛侠李明昭师娟子西北妇女儿童医院生殖中心西安710061

目的探讨玻璃化冷冻的扩张期囊胚解冻复苏后不同的培养时间对临床妊娠结局的影响。方法回顾性分析我院2021年1月1日至2022年12月31日期间通过玻璃化冷冻的D5及D6囊胚移植周期临床资料,共1 867周期。根据囊胚复苏后体外培养时间将其分... 详细信息

目的探讨玻璃化冷冻的扩张期囊胚解冻复苏后不同的培养时间对临床妊娠结局的影响。方法回顾性分析我院2021年1月1日至2022年12月31日期间通过玻璃化冷冻的D5及D6囊胚移植周期临床资料,共1 867周期。根据囊胚复苏后体外培养时间将其分为A组(0.05)。妊娠结局方面,移植1枚囊胚的两组(A1和B1)间HCG阳性率、临床妊娠率、胚胎着床率、多胎率、早期流产率、异位妊娠率和活产率比较均无显著差异(P>0.05);移植2枚囊胚的两组(A2和B2)比较,A2组的HCG阳性率显著高于B2组(91.30%vs. 79.28%,P0.05)。Logistic分析结果表明,移植2枚冻融囊胚时体外培养时间<2 h是HCG阳性率的独立影响因素[OR=2.210,95%CI(1.028,4.752),P=0.042]。结论双囊胚移植周期解冻后应尽量在2 h内移植,以便获得更好临床结局;单囊胚移植者解冻后在4 h内移植临床妊娠结局并无明显差异。

关键词：解冻囊胚移植体外培养时间临床结局

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Bio-based and Biodegradable Electrospun Fibers Composed of Poly(L-lactide) and Polyamide 4

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Chinese Journal of Polymer Science 2020年第1期38卷 53-62,I0006页

作者： Tao Chen Guo-Cheng Zhong Yuan-Ting Zhang li-ming zhao Yong-Jun Qiu School of Materials Science and Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Bio-based Material Engineering of China National light Industry Council Shanghai200237China Shanghai Key Laboratory of Advanced Polymeric Materials Shanghai200237China School of Biotechnology East China University of Science and TechnologyShanghai200237China

Novel bio-based and biodegradable block copolymers were synthesized by "click" reaction between poly(L-lactide)(PLLA) and polyamide 4(PA4). Upon tuning the molar mass of PLLA block, the properties of copolymers and electrospun ultrafine fibers were investigated and compared with those of PLLA and PA4 blends. PLLA and PA4 were found incompatible and formed individual crystalline regions, along with reciprocal inhibition in crystallization. Electrospun fibers were highly hydrophobic, even if hydrophilic PA4 was the rich component. The crystallinity of either PLLA or PA4 decreased after electrospinning and PLLA-rich as-spun fibers were almost amorphous. Immersion tests proved that fibers of block copolymers were relatively homogeneous with micro-phase separation between PLLA and PA4. The fibrous structures of copolymers were different from those of the fibers electrospun from blends, for which sheath-core structure induced by macro-phase separation between homopolymers of PLLA and PA4 was confirmed by TEM, EDS, and XPS.

关键词： Poly(L-lactide) Polyamide 4 "Click"reaction Electrospinning Fiber

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Retrieval of multiple scattering contrast from x-ray analyzer-based imaging

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Chinese Physics B 2021年第1期30卷 600-604页

作者： Heng Chen Bo liu li-ming zhao Kun Ren Zhi-li Wang School of Electronics Science&Applied Physics Hefei University of TechnologyHefei 230009China

We present a moment-based alternative approach to retrieve multiple scattering contrasts from x-ray analyzer-based imaging. By use of the properties of moments of convolutions, the multiple-image radiography approach is theoretically validated. Furthermore, higher order moments of the object scattering distribution, inaccessible in multiple-image radiography, are simultaneously provided by this alternative approach. It is experimentally demonstrated that the skew and kurtosis information related to the distribution of sub-pixel features within the object can be obtained from those complementary contrasts. Finally, the sensitivity of the retrieved multiple scattering contrasts is investigated experimentally. The finding that the sensitivity is inversely proportional to the square root of the detected photon number essentially indicates that the retrieval of moments with an order higher than two can be achieved without increasing exposure time or dose. The presented alternative approach provides an access to the exploitation of multiple scattering contrasts, which is expected to be useful in biomedical research, materials science, security screening, etc.

关键词： x-ray imaging analyzer-based imaging rocking curve moment analysis

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Synthesis of high quality type-Ib diamond crystals in carats grade

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Chinese Science Bulletin 2010年第14期55卷 1372-1375页

作者： XIAO HongYu JIA XiaoPeng MA HongAn li ShangSheng li Yong zhao ming State Key Laboratory of Superhard Materials Jilin University Changchun 130012 China

High quality type-Ib tower-shape gem-diamond crystals in carats grade were synthesized in cubic anvil high pressure apparatus (SPD-6×1200) at 5.4 GPa and 1250-1450°C. The relationship between the growth time and the weight of growth diamond has been gained. The faces of {110} and {113} were found in the synthetic diamond crystals frequently. We found that the relative growth rate of {113} face was descending with the increase of growth temperature, and that of {110} face had no obvious change with the increase of the growth temperatures and the growth time. In the work, the crystal defects were studied carefully, and the reasons for the appearance of the defects were also obtained. Some diamond crystals have been polished into the anvil of DAC (Diamond Anvil Cell) and the diamond jewelry. Compared with natural diamond crystal, synthetic diamond crystal has the merits such as small grinding quantity, low cost, etc., so it can be widely used in super high pressure field and gemstone industry.

关键词：宝石级金刚石单晶合成克拉金刚石晶体质型经济增长生长温度钻石首饰

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Synthesis and antitumor activity of 6- and 2-(1-acylsulfanylalkyl)-5,8-dimethoxy-1,4-naphthoquinones

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Chinese Chemical Letters 2008年第10期19卷 1206-1208页

作者： li ming zhao Tian Pei Xie YU Qin He De Feng Xu Shao Shun li School of Pharmacy Shanghai Jiaotong University 800 Dongchuan Road Shanghai 200240 China Shanghai Standard Biotech Co. Ltd. 1011 Halei Road Shanghai 201203 China

Sixteen novel 6- and 2-（1-acylsulfanylalkyl）-5,8-dimethoxy-l,4-naphthoquinones were designed and synthesized. Their cytotoxicities were evaluated in vitro against BEL-7402, HT-29 and SPC-Al cell lines. The pharmacological results showed that most of the prepared compounds displayed the excellent selectivity for HT-29 cell line. Compound lab exhibited the most potent antitumor activity among the tested compounds.

关键词： 5,8-Dimethoxy-l,4-naphthoquinone derivatives Synthesis Antitumor activity

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Construction technology for deep tunnels crossing superhigh-temperature fault zones with high water surges

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Frontiers of Structural and Civil Engineering 2024年第8期18卷 1267-1280页

作者： Yong zhao Tingyu ZHU li YU ming LU Sichuan–Xizang Railway Co. Ltd.Linzhi 860000China School of Civil Engineering Southwest Jiaotong UniversityChengdu 610036China

The harsh environment in tunnels with high geothermal temperatures and humidity can adversely impact machinery,personnel,and *** main causes of specific problems are the unknown mechanisms of local geothermal formation,inappropriate temperature control measures,and insufficient systematic *** this study,three work sections relating to a high geothermal tunnel are:the tunnel face,middle-of-tunnel section,and outside-oftunnel section.A cooling strategy is proposed to offer technical support in achieving comprehensive cooling,overall as well as for each of the ***,a comprehensive geological survey explores the mechanism and exact location of the heat ***,grouting and centralized drainage measures are used to control the heat release of hot *** ventilation,ice chillers and other applicable measures are used to control the ambient ***,a monitoring and early warning system is established to prevent *** cooling strategy has been applied in the field with good results.

关键词： high geothermal tunnels cooling strategy comprehensive cooling measures safety and security

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