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Chinese Journal of Chemical Engineering 2024年第7期71卷 91-101页

作者： yuting zhang Yuwei Tang Ruiping Yan Shuang Liang Zhongmou Liu Yadong Yang Key Laboratory of Songliao Aquatic Environment Ministry of EducationJilin Jianzhu UniversityChangchun 130118China School of Environmental Science and Engineering Yancheng Institute of TechnologyYancheng 224051China

A biochar-supported green nZVI(G-nZVI@MKB)composite was synthesized using mango kernel waste with“dual identity”as reductant and biomass of *** G-nZVI@MKB with a Fe/C mass ratio of 2.0(G-nZVI@MKB2)was determined as the most favorable composite for hexavalent chromium(Cr(VI))*** influencing parameters were discussed,and 99.0%of Cr(VI)removal occurred within 360 min under these optimized ***-second order kinetic model and intra-particle diffusion model well depicted Cr(VI)removal *** XRD,FTIR,SEM,and XPS analyses verified the key roles of G-nZVI and functional groups,as well as the primary removal mechanisms involving electrostatic attraction,reduction,and complexation.G-nZVI@MKB2 exhibited good stability and reusability with only a 16.4%decline in Cr(VI)removal after five *** study offered evidence that mango kernel could be recycled as a beneficial resource to synthesize green nZVI-loaded biochar composite for efficient Cr(VI)elimination from water.

关键词： Synthesis Biochar-supported nZVI Hexavalent chromium Reduction Regeneration

Composition characterization and transformation mechanism of dissolved organic phosphorus in wastewater treatment using 31P NMR spectroscopy

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Frontiers of Environmental Science & Engineering 2024年第3期18卷 103-113页

作者： yuting zhang Wei Shang SoonThiam Khu Xingcan Zheng Yongli Sun Pengfeng Li Miao Gu Wen-an zhang Huanmei Ma National Engineering Research Center For Urban Water&Wastewater North China Municipal Engineering Design&Research Institute Co.Ltd.Tianjin 300381China School of Environment Science&Engineering Tianjin UniversityTianjin 300350China

The migration and transformation of phosphorus components in wastewater treatment plants(WWTPs)play a crucial role in the convergence and circulation of ***,the composition and variation of dissolved organic phosphorus(DOP)in WWTPs were unclear because of its complex nature,hindering its efficient *** this study,the DOP species and their transformation during the treatment process in WWTP were comprehensively ***,two enrichment methods were assessed for their effectiveness at facilitating wastewater analysis:lyophilization and aluminum salt *** salt precipitation was found to be better because its application allowed 31P nuclear magnetic resonance(31P NMR)spectroscopy to identify more species in the secondary effluent:orthophosphate(Ortho-P)(81.1%–89.3%of the dissolved total phosphorus),pyrophosphates(Pyro-P)(0%–2.3%),orthophosphate monoesters(Mono-P)(7.0%–10.77%),orthophosphate diesters(Di-P)(1.0%–2.96%),and phosphonate(Phos-P)(1.7%–5.16%).Furthermore,the variation and transformation mechanism of phosphorus,particularly those of DOP,during the entire sewage-treatment process were *** the treatment steps,biological treatment combined tertiary treatment achieved better DOP removal ***,biological treatment mainly removed Mono-P and Di-P with removal efficiencies of 33.3%and 41.7%compared with the effluent of the grit ***-P has higher bioavailability and is more easily converted and utilized by microorganisms than ***,Phos-P,with low bioavailability,was hardly utilized by microorganisms,which showed only 18.4%removal efficiency in biological *** tertiary treatment,coagulation process exhibited higher removal ability of Ortho-P(69.1%)and partial removal efficiencies of DOP,resulting in an increase in the DOP proportion in *** addition,Phos-P could not be effectively removed through the biological treatment and was only partially reduced via the adsorption pro

关键词： Municipal wastewater Dissolved organic phosphorus Composition Transformation 31P nuclear magnetic resonance

Development and evaluation of an online monitoring single-particle optical particle counter with polarization detection

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Journal of Environmental Sciences 2024年第4期138卷 585-596页

作者： Weijie Yao Xiaole Pan Yu Tian Hang Liu yuting zhang Shandong Lei Junbo zhang Yinzhou zhang LinWu Yele Sun Zifa Wang State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

We developed a single-particle optical particle counter with polarization detection(SOPC)for the real-time measurement of the optical size and depolarization ratio(defined as the ratio of the vertical component to the parallel component of backward scattering)of atmospheric particles,the polarization ratio(DR)value can reflect the irregularity of the *** SOPC can detect aerosol particles with size larger than 500 nm and the maximum particle count rate reaches~1.8×10^(5)particles per *** SOPC uses a modulated polarization laser to measure the optical size of particles according to forward scattering signal and the DR value of the particles by backward S and P signal *** sampling rate of the SOPC was 106#/(sec·channel),and all the raw data were processed *** calibration curve was obtained by polystyrene latex spheres with sizes of 0.5-10μm,and the average relative deviation of measurement was 3.96% for sub 3μm particles.T-matrix method calculations showed that the DR value of backscatter light at 120°could describe the variations in the aspect ratio of particles in the above size *** performed insitu observations for the evaluation of the SOPC,the mass concentration constructed by the SOPC showed good agreement with the PM_(2.5)measurements in a nearby state-controlled monitoring *** instrument could provide useful data for source appointment and regulations against air pollution.

关键词： Instrument development Single particle detection Measurement uncertainty Optical simulation Mass concentration

Genetic Insights into Glycine’s Protective Role Against CAD—European and East Asia,2015 and 2020

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China CDC weekly 2024年第9期6卷 168-172,I0003-I0008页

作者： Jiaying Yu Zhuolin Zhu Ting Wang Yuanhao Wei Lianjie Huang Qianru zhang yuting zhang Yiran Wang Guiyou Liu Xiang Shu Rennan Feng Department of Nutrition and Food Hygiene School of Public HealthHarbin Medical UniversityHarbin CityHeilongjiang ProvinceChina Key Laboratory of Precision Nutrition and Health of Ministry of Education School of Public HealthHarbin Medical UniversityHarbin CityHeilongjiang ProvinceChina Songyang County Center for Disease Prevention and Control Songyang CityZhejiang Province China Department of Neurology Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Epidemiology and Biostatistics Memorial Sloan Kettering Cancer CenterNew York CityNYUSA

Introduction:The purpose of this study is to examine the potential causal relationship between levels of circulating glycine and coronary artery disease(CAD)using a two-step Mendelian randomization(MR)***:We analyzed data from genome-wide association studies(GWAS)conducted on European and East Asian *** assess the causal effects of circulating glycine levels on the risk of *** used the inverse-variance weighting(IVW),weighted median(WM),MR-Egger,and Mendelian Randomization Pleiotropy RESidual Sum and Outlier(MR-PRESSO)***,we conducted mediation analysis to investigate the contribution of blood pressure and other cardiovascular disease-related ***:The two-step Mendelian randomization analysis revealed that higher levels of glycine in the blood were associated with a reduced risk of CAD in Europeans[odds ratio(OR)=0.84,95%confidence interval(CI):0.72,−0.98;P=0.029]and East Asians:(OR=0.76,95%CI:0.66,−0.89;P=3.57×10−4).Sensitivity analysis confirmed the robustness of these ***,our results suggest that about 6.06%of the observed causal effect is mediated through genetically predicted systolic blood pressure(SBP)in the European ***:Our results contribute to the current knowledge regarding the involvement of glycine in the progression of CAD,and provide valuable methodological insights for the prevention and treatment of this condition.

关键词： CAD prevention involvement

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基于能力的国防资源分配方法

系统工程与电子技术 2024年第2期46卷 599-604页

作者：张玉婷杨镜宇国防大学研究生院北京100095 海军参谋部机要局北京100841 国防大学联合作战学院北京100091

针对体系建设发展过程中国防资源有限、分配困难问题,考虑国防总经费预算受限、年度资源平均分配、体系能力满足能力需求等方面的约束,首先采用数学规划法,构建基于能力的国防资源静态分配模型,将资源分配到不同能力领域的体系建设发展... 详细信息

针对体系建设发展过程中国防资源有限、分配困难问题,考虑国防总经费预算受限、年度资源平均分配、体系能力满足能力需求等方面的约束,首先采用数学规划法,构建基于能力的国防资源静态分配模型,将资源分配到不同能力领域的体系建设发展中。其次,给出了基于遗传算法的模型求解算法。最后,通过示例验证所构建的资源分配模型能够合理地进行国防资源分配,且计算结果高效、可行,为体系建设发展中的资源分配问题提供了一定的理论支撑。

关键词：资源分配数学规划法体系能力遗传算法

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A back analysis scheme for refined soil stratification based on integrating borehole and CPT data

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Geoscience Frontiers 2024年第1期15卷 1-16页

作者： Jiawei Xie Cheng Zeng Jinsong Huang yuting zhang Jianlin Lu Discipline of Civil Surveying&Environmental EngineeringPriority Research Centre for Geotechnical Science&EngineeringThe University of NewcastleCallaghanNSW 2308Australia

Utilizing both borehole and Cone Penetration Testing(CPT)data in soil stratification helps to get more convincing soil stratification ***,the soil classification results revealed by borehole(Unified Soil Classification System,USCS)and CPT tests(soil behavior type,SBT)are commonly not *** study proposes a feasible solution to integrate the borehole and CPT data with the tree-based *** tree-based method is naturally suitable for soil stratification tasks as it aims to divide the subsurface space into several clusters based on the similarities of the soil types.A novel boundary dic-tionary method is proposed to enhance the model performance on complex soil layer conditions.A prob-abilistic mapping matrix between the USCS-SBT system is built based on a collected municipal database with collocated borehole and CPT *** optimal soil stratification results can be selected based on considering multiple borehole information and pruning the structure of *** structure of the trees can be optimized in a back analysis perspective with the Sequential Model-Based Global Optimization(SMBO)algorithm which aims to maximize the possibility of observing the borehole information based on the USCS-SBT probabilistic mapping *** uncertainties of the optimal soil stratification results can be estimated based on a weighted Gini index *** performance of the proposed method is validated based on a real case in New Zealand with a cross-validation *** results indicate that the proposed method is robust and effective.

关键词： Soil stratification Data integration Borehole CPT Tree-based method

地域、种族、优生学:论安德森与福克纳的文学创作异见

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外国文学 2024年第4期 72-84页

作者：张玉婷首都经济贸易大学外国语学院北京100070

对比分析安德森与福克纳的作品细节,回顾后者对前者的戏评价,可发现两位作家在作品中传达的地域观、种族观、血统观有明显差异,先后分别构成对优生学种族本质主义主张的容纳和批驳。对二者创作异见的彰显并非否认其风格的共性和关联,而... 详细信息

对比分析安德森与福克纳的作品细节,回顾后者对前者的戏评价,可发现两位作家在作品中传达的地域观、种族观、血统观有明显差异,先后分别构成对优生学种族本质主义主张的容纳和批驳。对二者创作异见的彰显并非否认其风格的共性和关联,而旨在揭示他们对益格鲁-撒克逊民族主义的不同立场,进而深度剖析两代美国作家写作视阈的动态传承和演进,更以此管窥20世纪初美国文学界与种族科学话语的跨界互动。

关键词：安德森福克纳地域种族优生学

机械整流永磁发电机复合转子系统的动态特性研究

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西北工业大学学报 2024年第3期42卷 550-557页

作者：刘欣薛志伟张雨婷牛磊磊天津工业大学机械工程学院天津市现代机电装备技术重点实验室天津300387

机械整流永磁发电机的复合转子系统是该发电机实现整流功能的关键结构。研究该复合转子系统在双向输入工况下的动态特性,是为了分析该转子系统各构件在双向输入工况下的振动变形程度。基于集中质量参数理论,建立了复合转子系统在双向输... 详细信息

机械整流永磁发电机的复合转子系统是该发电机实现整流功能的关键结构。研究该复合转子系统在双向输入工况下的动态特性,是为了分析该转子系统各构件在双向输入工况下的振动变形程度。基于集中质量参数理论,建立了复合转子系统在双向输入工况下的动力学模型,通过龙格库塔法对该模型求解,得到了其在双向输入时各构件的动态特性。结果表明:复合转子系统各构件在双向输入时扭转振动位移波动幅值均在25μm左右,且各行星轮分路动态内外啮合力在双向输入时标准偏差均在200 N附近,即复合转子系统产生的振动程度相近;均载系数均随输入转矩增大而明显减小,在转矩达到500 N·m时趋于平缓,因此增大输入转矩能明显改善均载性能,使复合转子系统在双向输入工况下获得较好的动力学性能。研究结果对该发电机的减振降噪和可靠运行有重要意义。

关键词：机械整流永磁发电机复合转子系统集中质量参数动态特性

姜黄素增强的纤维素光敏抗菌膜制备及其对鲜猪肉的保鲜性能

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食品科学 2024年第13期45卷 239-246页

作者：张宇婷陈岩智秀娟杜斌北京农学院食品科学与工程学院农业农村部农产品加工与品质控制重点实验室北京102206

本研究制备含有姜黄素且具有良好力学性能、耐水性、光敏抗菌性和高氧气阻隔性的纤维素薄膜(cellulose-curcumin-film,C-Cu_(x)-F)(x=0、0.1、0.5和1)。由于姜黄素与纤维素分子链的强相互作用,姜黄素可以显著提高纤维素薄膜的力学性能... 详细信息

本研究制备含有姜黄素且具有良好力学性能、耐水性、光敏抗菌性和高氧气阻隔性的纤维素薄膜(cellulose-curcumin-film,C-Cu_(x)-F)(x=0、0.1、0.5和1)。由于姜黄素与纤维素分子链的强相互作用,姜黄素可以显著提高纤维素薄膜的力学性能和抗水性。姜黄素掺杂含量显著影响纤维素薄膜的透氧性(P<0.05),随着姜黄素含量的增加,薄膜氧气透过率逐渐减小。在室温23℃条件下,当姜黄素质量分数分别为0%、0.1%、0.5%和1%时,纤维素膜的透氧率分别为(29.71±1.66)、(4.79±0.13)、(3.52±0.45)cm^(3)/(m^(2)·d)与(0.90±0.09)cm^(3)/(m^(2)·d)。在0%~0.5%范围内,由于分子间作用力的增强,姜黄素的加入可显著降低纤维素薄膜的透水率(P<0.05)。由于姜黄素的光敏作用产生单线态氧,纤维素薄膜对金黄色葡萄球菌具有良好的光敏抗菌作用,而且抗菌性能随着光照时间的延长而增强。在60 mW/cm^(2)的白光照射10 min后,薄膜C-Cu1-F对金黄色葡萄球菌的抑制率约为(61.00±1.73)%,照射20 min达到(91.67±1.53)%。在冷鲜猪肉的包装保鲜中,薄膜C-Cu1-F能显著抑制鲜猪肉总挥发性盐基氮的产生,降低菌落总数(P<0.05),对微生物和生物胺的产生有明显抑制作用。综上,该薄膜不仅具有优异的力学性能和抗菌性能,而且对鲜猪肉具有保鲜作用。

关键词：纤维素薄膜姜黄素光敏抗菌效果鲜肉保鲜

康巴藏区藏族家具纹样数字化保护及创新应用研究

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家具与室内装饰 2024年第3期31卷 14-19页

作者：张瀚文张玉婷西南财经大学人文与艺术学院四川成都610000 西华大学美术与设计学院四川成都610000

从服务设计角度出发,基于康巴藏族纹样的资源梳理,对其家具纹样进行数字化保护研究,挖掘其纹样的现代创新应用形式。拟采用文献研究、田野调查等方法剖析康巴藏族家具类型与纹样审美特点,在此基础上提出数字化保护策略,利用计算机技术... 详细信息

从服务设计角度出发,基于康巴藏族纹样的资源梳理,对其家具纹样进行数字化保护研究,挖掘其纹样的现代创新应用形式。拟采用文献研究、田野调查等方法剖析康巴藏族家具类型与纹样审美特点,在此基础上提出数字化保护策略,利用计算机技术对家具纹样进行数字化采集、分析、处理和保存,并引入服务设计工具和方法对其进行实践论证,进一步构建康巴藏族家具纹样数字化保护服务平台,实现纹样资源的有效共享和数据应用,完成对传统民族纹样的现代化保护与创新设计。借此生成一条利用新技术和数字化手段进行纹样保护与应用的新路径,探索传统文化在新时代的转型方式,推动文化创意产业的创新发展。

关键词：传统纹样康巴藏族数字化保护服务设计