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Effect of non-uniform swelling on coal multiphysics during gas injection: The triangle approach

Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1362-1372页

作者： Yifan Huang Jishan Liu yaoyao zhao Derek Elsworth Yee-Kwong Leong Department of Chemical Engineering School of EngineeringThe University of Western Australia35 Stirling HighwayWA 6009Australia State Key Laboratory of Coal Resources & Safe Mining China University of Mining& TechnologyBeijing100803China Department of Energy and Mineral Engineering G3 Centre and Energy InstituteThe Pennsylvania State UniversityUniversity ParkPA16802USA

In current dual porosity/permeability models,there exists a fundamental assumption that the adsorption-induced swelling is distributed uniformly within the representative elementary volume (REV),irrespective of its internal structures and transient ***,both internal structures and transient processes can lead to the non-uniform *** this study,we hypothesize that the non-uniform swelling is responsible for why coal permeability in experimental measurements is not only controlled by the effective stress but also is affected by the adsorption-induced *** propose a concept of the swelling triangle composed of swelling paths to characterize the evolution of the non-uniform swelling and serve as a core link in coupled multiphysics.A swelling path is determined by a dimensionless volumetric ratio and a dimensionless swelling *** swelling paths have the same start and end point,and each swelling path represents a unique swelling *** swelling path as the diagonal of the triangle represents the case of the uniform swelling while that as the two perpendicular boundaries represents the case of the localized *** paths of all intermediate cases populate inside the *** corresponding relations between the swelling path and the response of coal multiphysics are established by a non-uniform swelling *** define this method as the triangle approach and corresponding models as swelling path-based *** proposed concept and models are verified against a long-term experimental measurement of permeability and strains under constant effective *** results demonstrate that during gas injection,coal multiphysics responses have a close dependence on the swelling path,and that in both future experiments and field predictions,this dependence must be considered.

关键词： Transient process Heterogeneity Swelling triangle Swelling path Non-uniform swelling coefficient

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Single-cell mass spectrometry studies of drug metabolism heterogeneity and primary resistance to gefitinib in non-small cell lung cancer cells

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Chinese Chemical Letters 2024年第2期35卷 436-440页

作者： Guizhen Zhu yaoyao zhao Wenmei Zhang Yuanyuan Wu Yuanxing Liu Guangsheng Guo Xiayan Wang Zhihong Liu Center of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and SeparationDepartment of ChemistryBeijing University of TechnologyBeijing 100124China Minzu University of China Beijing 100081China Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Health Science and EngineeringHubei UniversityWuhan 430062China

Patients with epidermal growth factor receptor(EGFR)wild-type non-small cell lung cancer(NSCLC)often show primary resistance to gefitinib *** is thus necessary to study the metabolism of gefitinib in NSCLC cells to comprehensively reveal the reasons for the primary resistance of ***,we develop a platform for studying drug metabolism heterogeneity based on single-cell mass spectrometry(sDMH-scMS)by integrating living-cell electrolaunching ionization MS(ILCEI-MS)and high-performance liquid chromatography-MS(HPLC-MS)analysis,and the primary resistance of NSCLC cells to gefitinib was studied using this *** ILCEI-MS analysis showed that approximately 11.9%of NSCLC single cells contained the gefitinib metabolite M11;HPLC-MS detection diluted the intensity of M11 in subpopulations and concealed the heterogeneity of drug metabolism in tumor single *** intensity of gefitinib in EGFR wild-type A549 cells was markedly lower than in mutant PC9 cells,and the intensity of gefitinib metabolites was significantly higher than in PC9 cells,suggesting that the primary resistance of NSCLC cells is related to gefitinib ***,the combination of gefitinib and the drug-metabolizing enzyme inhibitorα-naphthoflavone was shown to overcome the primary resistance of the NSCLC ***,the results of this study are expected to be applicable for clinical drug resistance diagnosis and treatment at the single-cell level.

关键词： Single-cell mass spectrometry Drug metabolism Non-small cell lung cancer Gefitinib Primary resistance

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BIKAS:Bio-Inspired Knowledge Acquisition and Simulacrum-A Knowledge Database to Support Multifunctional Design Concept Generation

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Data Intelligence 2024年第2期6卷 531-558页

作者： Pavan Tejaswi Velivela yaoyao Fiona zhao Department of Mechanical Engineering McGill UniversityQuebecCanada H3A 0G4

A detailed acquisition,analysis,and representation of biological systems exhibiting different functions is required to develop unique bio-inspired multifunctional conceptual designs and *** paper presents BIKAS:Bio-inspired Knowledge Acquisition and Simulacrum,a knowledge database of biological systems exhibiting various functionalities,developed based on case-based bio-inspired examples from *** knowledge database represents the biological features,their characteristics,and the function exhibited by the biological feature as a combination of its integrated structure and structural ***,this knowledge database is utilized by the Expandable Domain Integrated Design(xDID)model that works on classifying,mapping,and representing biological features into their respective geometric designations called *** combination of features from the Domains results in the generation of multifunctional conceptual *** addition,Meta-level design factors are proposed to aid designers in filtering the biological features and their respective functions having a similar structural strategy,thus aiding designers in rapidly selecting and emulating biological functions.

关键词： Bio-inspired design(BID) Knowledge database Conceptual design Multifunctional bio-inspired design Agile innovation

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共轭亚麻酸的生理功能及制备方法研究进展

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中国油脂 2024年第3期49卷 54-61页

作者：鲍雅婷赵瑶瑶郑洲缪锦来自然资源部第一海洋研究所山东青岛266061 青岛大学基础医学院山东青岛266071

旨在为共轭亚麻酸(CLNA)在功能食品、保健品和药品等领域的应用提供科学的理论参考,综述了CLNA的生理功能和制备方法。CLNA具有抗癌、调节脂质代谢、抗炎、抗氧化、抗糖尿病等多种生理功能,在预防和治疗许多常见疾病中具有较大的研究潜... 详细信息

旨在为共轭亚麻酸(CLNA)在功能食品、保健品和药品等领域的应用提供科学的理论参考,综述了CLNA的生理功能和制备方法。CLNA具有抗癌、调节脂质代谢、抗炎、抗氧化、抗糖尿病等多种生理功能,在预防和治疗许多常见疾病中具有较大的研究潜力,特别是糖尿病、肥胖症以及乳腺癌、结肠癌等常见癌症。物理提取法制备CLNA时提取率较低,不适用于工业上大规模生产,化学合成法制备CLNA因需要底物和催化剂,后续纯化步骤烦琐,生物合成法和基因工程法可得到较高含量的CLNA,具有良好的发展前景。

关键词：共轭亚麻酸生理功能制备方法保健品

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叙事护理对2型糖尿病患者心理状态及血糖指标的影响

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中外医药研究 2024年第13期3卷 120-122页

作者：赵瑶瑶赵艳敏滨州医学院附属医院内分泌科二病区山东滨州256600

目的:探讨叙事护理对2型糖尿病患者心理状态及血糖指标的影响。方法:选取2022年3月—2023年3月滨州医学院附属医院收治的2型糖尿病患者66例作为研究对象,随机分为对照组和观察组,各33例。对照组应用常规护理,观察组在对照组基础上应用... 详细信息

目的:探讨叙事护理对2型糖尿病患者心理状态及血糖指标的影响。方法:选取2022年3月—2023年3月滨州医学院附属医院收治的2型糖尿病患者66例作为研究对象,随机分为对照组和观察组,各33例。对照组应用常规护理,观察组在对照组基础上应用叙事护理,比较两组心理状态、血糖指标。结果:护理前,两组焦虑自评量表(SAS)、抑郁自评量表(SDS)评分比较,差异无统计学意义(P>0.05);护理后,两组SAS、SDS评分下降,观察组低于对照组,差异有统计学意义(P0.05);护理后,两组空腹血糖、餐后2 h血糖、糖化血红蛋白水平降低,观察组低于对照组,差异有统计学意义(P<0.05)。结论:叙事护理在2型糖尿病患者中应用效果显著,可缓解其焦虑、抑郁情绪,改善血糖指标。

关键词： 2型糖尿病叙事护理心理状态血糖

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低温胁迫后紫花苜蓿叶片光合作用的恢复特性研究

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中国农业科技导报 2024年第2期26卷 80-89页

作者：苗宇王婕赵尧尧张丽佳刘美君新疆农业大学草业学院西部干旱区草地资源与生态教育部重点实验室新疆草地资源与生态重点实验室乌鲁木齐830052

为探究低温解除后苜蓿光合作用恢复过程中的限制位点,以‘新牧4号’和‘甘农5号’2个品种紫花苜蓿为材料,测定其低温胁迫及恢复过程中苜蓿叶片光合活性的变化。结果表明,低温胁迫下2个苜蓿品种叶片叶绿素含量、净光合速率以及光系统Ⅱ(p... 详细信息

为探究低温解除后苜蓿光合作用恢复过程中的限制位点,以‘新牧4号’和‘甘农5号’2个品种紫花苜蓿为材料,测定其低温胁迫及恢复过程中苜蓿叶片光合活性的变化。结果表明,低温胁迫下2个苜蓿品种叶片叶绿素含量、净光合速率以及光系统Ⅱ(photosystemⅡ,PSⅡ)活性显著下降,非光化学淬灭系数(nonphotochemical quenching factor,NPQ)显著上升,但对光系统Ⅰ(photosystemⅠ,PSⅠ)的活性无显著影响;其中,‘甘农5号’叶绿素对低温更敏感,含量下降较多。室温恢复72 h后,2个品种苜蓿叶片PSⅡ的活性及净光合速率都有上升但均未恢复至处理前水平;NPQ缓慢下降至处理前水平,‘甘农5号’NPQ较‘新牧4号’更高,表明在恢复过程中仍有过剩光能需通过NPQ消耗。苜蓿叶片的电子传递链在低温下受抑制显著,恢复72 h后PSⅡ受体侧活性基本恢复至处理前,而PSⅡ供体侧活性显著下降。2个品种苜蓿单位反应中心捕获的用于电子传递的能量(energy captured by unit reaction center for electron transfer,ETO/RC)和单位反应中心捕获的用于还原QA的能量(energy captured by the unit reaction center for reducing QA,TRO/RC)在低温处理72 h后显著下降,解除低温后恢复至处理前水平,且2个品种无显著差异;2个苜蓿品种单位反应中心耗散掉的能量(energy dissipated by the unit reaction center,DIO/RC)未恢复至处理前水平,且‘甘农5号’在恢复72 h后DIO/RC显著升高。综上,低温胁迫显著伤害紫花苜蓿叶片光合机构,降低了光合速率,光合速率未恢复到处理前与PSⅡ的活性显著相关,限制光合作用恢复的位点在其供体侧,非光化学淬灭是恢复24 h过剩光能的主要分配途径。

关键词：紫花苜蓿低温胁迫胁迫解除光合作用光合机构活性

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运用POE教学策略进行模型构建落实生命观念的教学实践——以“尿的形成”为例

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生物学通报 2024年第4期59卷 61-64页

作者：赵瑶瑶田春华董素君李扬北京市三帆中学北京100088

在“人体内废物的排出”内容教学中,运用POE(predict-observe-explain)教学策略,引导学生首先根据生活经验及已有知识对肾单位的结构进行预测;接着教师提供科学史及真实的结构图供学生观察验证;然后进一步引导学生对尿液形成的过程进行... 详细信息

在“人体内废物的排出”内容教学中,运用POE(predict-observe-explain)教学策略,引导学生首先根据生活经验及已有知识对肾单位的结构进行预测;接着教师提供科学史及真实的结构图供学生观察验证;然后进一步引导学生对尿液形成的过程进行梳理,解释滤过和重吸收的过程;最终完成对“尿液在肾单位中形成”这一概念的深度构建。整个过程通过生物学模型构建引导学生通过功能预测结构,利用结构解释功能,最终落实结构与功能观。

关键词： POE教学策略模型构建尿的形成肾单位

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Effects of dimethyl ether and ethanol additions on soot transition in ethylene counterflow diffusion flames

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Science China(Technological Sciences) 2024年第4期67卷 1094-1112页

作者： GUO LinGe YING yaoyao CHEN Chen zhao Xuan LIU Dong MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China Advanced Combustion Laboratory School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China

This paper investigates the effect of blending dimethyl ether(DME)and ethanol on the soot transition periods in ethylene counterflow diffusion flames by using a novel optical diagnostic *** soot critical transition point in different conditions is identified experimentally and *** kinds of flames are carried out to gain the soot critical transition point in counterflow diffusion flames by changing oxygen fraction(Xo)and changing volume flow rates of fuel and oxidizer(Qv).The red-green-blue(RGB)ratio method is used to precisely identify the soot critical transition point,and chemical kinetic simulations are performed to analyze the detailed reaction *** results show that compared to the ethylene flame,the soot critical transition point occurs at a higher Xoand a lower Qvwhen DME or ethanol is *** addition of DME and ethanol can inhibit soot formation,due to the degree of soot formation reaction being lower than the degree of the oxidation reaction in the blending flames.

关键词： optical diagnosis sooting tendency counterflow diffusion flame dimethyl ether ethanol

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Effects of Enteromorpha prolifera polysaccharides on growth performance,intestinal barrier function and cecal microbiota in yellow-feathered broilers under heat stress

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Journal of Animal Science and Biotechnology 2024年第1期15卷 344-361页

作者： Wenchao Liu Huimei Liu yaoyao Wang Zhongxiang zhao Balamuralikrishnan Balasubramanian Rajesh Jha Department of Animal Science College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiangGuangdong 524088People’s Republic of China Department of Food Science and Biotechnology College of Life ScienceSejong UniversitySeoul 05006South Korea Department of Human Nutrition Food and Animal SciencesCollege of Tropical Agriculture and Human ResourcesUniversity of Hawaii at ManoaHonoluluHI 96822USA

Background Global warming leading to heat stress(HS)is becoming a major challenge for broiler *** study aimed to explore the protective effects of seaweed(Enteromorpha prolifera)polysaccharides(EPS)on the intestinal barrier function,microbial ecology,and performance of broilers under HS.A total of 144 yellow-feathered broilers(male,56 days old)with 682.59±7.38 g were randomly assigned to 3 groups:1)TN(thermal neutral zone,23.6±1.8℃),2)HS(heat stress,33.2±1.5℃ for 10 h/d),and 3)HSE(HS+0.1%EPS).Each group contained 6 replicates with 8 broilers per *** study was conducted for 4 weeks;feed intake and body weights were measured at the end of weeks 2 and *** the end of the feeding trial,small intestine samples were collected for histomorphology,antioxidant,secretory immunoglobulin A(s Ig A)content,apoptosis,gene and protein expression analysis;cecal contents were also collected for microbiota analysis based on 16S r DNA *** Dietary EPS promoted the average daily gain(ADG)of broilers during 3–4 weeks of HS(P<0.05).At the end of HS on broilers,the activity of total superoxide dismutase(T-SOD),glutathione S-transferase(GST),and the content of s Ig A in jejunum were improved by EPS supplementation(P<0.05).Besides,dietary EPS reduced the epithelial cell apoptosis of jejunum and ileum in heat-stressed broilers(P<0.05).Addition of EPS in HS group broilers'diet upregulated the relative m RNA expression of Occludin,ZO-1,γ-GCLc and IL-10 of the jejunum(P<0.05),whereas downregulated the relative m RNA expression of NF-κB p65,TNF-αand IL-1βof the jejunum(P<0.05).Dietary EPS increased the protein expression of Occludin and ZO-1,whereas it reduced the protein expression of NF-κB p65 and MLCK(P<0.01)and tended to decrease the protein expression of TNF-α(P=0.094)in heat-stressed ***,the proportions of Bacteroides and Oscillospira among the three groups were positively associated with jejunal apoptosis and pro-inflammatory cytokine ex

关键词： Broilers Cecal microbiota Heat stress Intestinal barrier function Seaweed polysaccharides

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气相色谱法检测生姜贮藏期间咪鲜胺及其代谢物残留动态研究

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蔬菜 2024年第7期 37-43页

作者：刘培孙海薪丁永冲赵晗让雪娜林琼佟世生赵垚垚段玉权中国农业科学院农产品加工研究所北京100193 石家庄市农产品质量检测中心河北石家庄050021 北京城市学院北京100193

为了确认采用气相色谱法检测生姜中咪鲜胺及其代谢物残留动态方法的准确性,并确定咪鲜胺对生姜贮藏保鲜作用的安全用量,试验在验证气相色谱法(ECD电子捕获检测器)测定衍生化后生姜样品中咪鲜胺残留量的分析方法的准确度和灵敏度的基础上... 详细信息

为了确认采用气相色谱法检测生姜中咪鲜胺及其代谢物残留动态方法的准确性,并确定咪鲜胺对生姜贮藏保鲜作用的安全用量,试验在验证气相色谱法(ECD电子捕获检测器)测定衍生化后生姜样品中咪鲜胺残留量的分析方法的准确度和灵敏度的基础上,将经450mg/kg咪鲜胺处理后的生姜在低温条件下(12±1)℃贮藏,用气相色谱法检测咪鲜胺及其代谢物2,4,6-三氯苯酚的残留动态。结果表明:咪鲜胺的衍生化率在0.1~1.0mg/kg浓度下均为100%,采用气相色谱法检测生姜中咪鲜胺及其代谢物残留动态的方法简单有效,准确度和精确度较好,灵敏度较高,符合农药残留分析的基本要求。咪鲜胺在生姜贮藏过程中的残留消解较慢,姜皮中残留量随贮藏期延长呈下降趋势,贮藏期第42天时降至14.31mg/kg,在姜肉中总体表现为残留量先增加后降低的趋势,含量最大值在贮藏第35天,为0.31mg/kg,第42天后含量降至0.25 mg/kg;2,4,6-三氯苯酚在生姜不同组织中的含量变化整体呈上升趋势,贮藏期第28天时,姜皮、姜肉中含量分别为0.042、0.035mg/kg,残留量均小于0.1mg/kg,符合食品安全标准。因此,450 mg/kg浓度咪鲜胺处理可以作为生姜贮藏的防腐保鲜剂。

关键词：生姜咪鲜胺 2,4,6-三氯苯酚保鲜气相色谱法衍生化反应萃取

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