检索结果-内蒙古大学图书馆

Enhanced Gelation Properties and Saltiness Perception of Low-Salt Surimi Gel with Psyllium Husk Powder

JOUrNAL OF AGrICULTUrAL ANd FOOd CHEMISTrY 2024年第50期72卷 28157-28166页

作者： Zhang, Pei Zheng, Meixia Hou, Guohua Zhou, Fuzhen deng, Kaibo Miao, Song Zhang, Longtao Zheng, Baodong Fujian Agr & Forestry Univ Engn Res Ctr Fujian Taiwan Special Marine Food Pro Minist Educ Fuzhou 350002 Fujian Peoples R China Fujian Agr & Forestry Univ Coll Food Sci Fuzhou 350002 Peoples R China Ctr Food Mat Sci & Struct Design China Ireland Int Cooperat Fuzhou 350002 Peoples R China Teagasc Food Res Ctr MoorepkP61C996 Fermoy Co Cork Ireland Xiamen Yinxiang Grp Co Ltd State Key Lab Food Safety Technol Meat Prod Xiamen 361100 Peoples R China

reducing salt intake is an effective strategy for preventing and managing hypertension and cardiovascular diseases. In this study, psyllium husk powder (PHP) was incorporated into surimi to address the challenges of diminished saltiness and texture in low-salt surimi products. PHP promoted the conversion of alpha-helix structures into beta-sheet and strengthening intermolecular interactions, such as ionic bonds, hydrogen bonds, hydrophobic interactions, and disulfide bonds. The addition of PHP enhanced the connectivity and uniformity of the surimi gel network, resulting in an increase in gel strength from 11.35 to 13.88 N and a reduction in cooking loss from 6.33% to 2.27%. Additionally, the more compact gel network structure improved the fluidity of immobile water within the low-salt surimi gel. The surimi gel containing 1.5% PHP accelerated a 30% higher Na+ release rate compared to the low-salt surimi gel, enhancing the saltiness perception to levels comparable with high-salt surimi gel, as measured by an electronic tongue. These findings present a promising approach to improving the texture and saltiness perception of surimi gel products while reducing salt content.

关键词： psyllium husk powder low-salt surimi gel texture saltiness perception

来源：评论

学校读者我要写书评

暂无评论

Effects of atomic vacancy defects and their evolution mechanisms on the fracture of carbon nanotubes

引用

JOUrNAL OF MATErIALS SCIENCE 2024年第10期59卷 4186-4197页

作者： Wang, Yalei Zhou, Jianqiu Cui, Lei Liu, Xiaohan Tang, Xiaocong Nanjing Tech Univ Inst Power Engn & Engn Thermophys Fac Mech Engn 30 Puzhu South Rd Nanjing 210000 Peoples R China Nanjing Inst Measurement & Testing Technol 10 Xianlin Ave Nanjing 210000 Peoples R China

CNTs produced by traditional physical and chemical methods inevitably have some defects. The existence of defects has a great impact on the physical, chemical and mechanical properties of CNTs. This article presents a method for evaluating the influence of vacancy defects on the fracture mechanism of carbon nanotubes using the C-C bond fracture criterion. The objective of this approach is to develop a finite element model of carbon nanotubes that includes atomic vacancy defects, allowing for the analysis of the evolution of these defects into dislocations. Specifically, this study utilizes a finite element model to simulate the fracture behavior of carbon nanotubes. Additionally, X-ray diffractometer and raman spectrometer techniques are employed to characterize and analyze complete carbon nanotubes with atomic vacancies and defects throughout the evolution process. The findings indicate that vacancy defects significantly reduce the tensile strength and ultimate strain of Carbon nanotubes, with reductions of approximately 20-30% and 12-18% in tensile strength and final strain, respectively. The diffraction and raman spectra uncover the evolution mechanism of carbon nanotubes from point defects to dislocation until fracture, and further demonstrate the substantial decrease in their mechanical properties resulting from stress concentration.

关键词： Carbon nanotubes

来源：评论

学校读者我要写书评

暂无评论

Multiscale simulation of hygrothermal stress and mechanical properties degradation of carbon fiber reinforced polymers laminates

引用

POLYMEr COMPOSITES 2024年第6期45卷 5176-5191页

作者： Yu, Haiyan Ze, Gao Zhang, daixin Xing, Ping Tongji Univ Sch Automot Studies Shanghai 201804 Peoples R China

A mesoscopic representative volume element (rVE) model of carbon fiber reinforced polymers (CFrP) laminate with 15 plies was established based on the principle of fiber random disturbance. The rVE model was validated by comparing the elastic parameters calculated by the rVE model, Chamis model, and Bridge model. Wet stress and thermal stress were coupled using a sequential method. Macroscopic and microscopic subroutines were developed to calculate the stress-strain field of CFrP laminate and rVE model. A multiscale numerical simulation of three-point bending of moisture-saturated CFrP laminate was conducted. Failure process and failure modes of CFrP laminate were discussed based on the multiscale simulation and SEM observations. The results show that the rVE model and the multiscale simulation strategy presented in this work can predict the coupled hygrothermal stress and the strength degradation due to moisture absorption very well. The maximum error between the simulated and experimental averaged force of the moisture-saturated CFrP laminate subjected to three-point bending is about 3.4%. Multiscale simulation demonstrated that uneven distribution of fibers can result in the fiber/matrix interfaces bearing a larger transverse stress in the fiber's dense distribution area. It is the main reason that results in fiber/matrix interface failure of CFrP laminates working in hygrothermal *** A rVE model of CFrP laminate was presented using fibers random disturbance. Coupled hygrothermal stress of single fiber and surrounded matrix was obtained. A multiscale simulation of the strength change of the CFrP plate due to wet-thermal stress was conducted. Failure modes of CFrP laminate are discussed based on the multiscale simulation.

关键词： CFrP laminate hygrothermal stress multiscale simulation rVE model three-point bending

来源：评论

学校读者我要写书评

暂无评论

Integrating well logs,3d seismic,and earthquake data for comprehensive prediction of 3d in-situ stress orientations:A case study from the Weiyuan area in the Sichuan Basin,china

引用

Petroleum Science 2025年第1期22卷 210-221页

作者： Huan Cao Yang Zhao Hai-Chao Chen Le-Le Zhang Cheng-Gang Xian Ji-dong Yang Lu Liu State Key Laboratory of Petroleum Resources and Engineering and Unconventional Petroleum Research InstituteChina University of Petroleum(Beijing)Beijing102249China Department of Geophysics China University of Petroleum(East China)Qingdao266580ShandongChina Aramco Beijing Research Center Aramco AsiaBeijing100102China

determining the orientation of in-situ stresses is crucial for various geoscience and engineering *** methods for estimating these stress orientations often depend on focal mechanism solutions(FMSs)derived from earthquake data and formation micro-imager(FMI)data from well ***,these techniques can be costly,depth-inaccurate,and may lack spatial *** address this issue,we introduce the use of three-dimensional(3d)seismic data(active sources)as a lateral constraint to approximate the 3d stress orientation *** that both stress and fracture patterns are closely related to seismic velocity anisotropy,we derive the orientation of azimuthal anisotropy from multi-azimuth 3d seismic data to compensate for the lack of spatial stress orientation *** apply our proposed workflow to a case study in the Weiyuan area of the Sichuan Basin,china,a region targeted for shale gas *** integrating diverse datasets,including 3d seismic,earthquakes,and well logs,we develop a comprehensive 3d model of in-situ stress(orientations and magnitudes).Our results demonstrate that the estimated anisotropy orientations from 3d seismic data are consistent with the direction of maximum horizontal principal stress(SHmax)obtained from *** analyzed 12 earthquakes(magnitude>3)recorded between 2016 and 2020 for their FMSs and compressional axis(P-axis)*** derived SHmax direction from our 3d stress model is 110°ES(East-South),which shows excellent agreement with the FMSs(within 3.96°).This close alignment validates the reliability and precision of our integrated method for predicting 3d SHmax orientations.

关键词： In-situ stress orientation SHmax Azimuthal velocity anisotropy Focal source mechanism Formation micro-imager

来源：评论

学校读者我要写书评

暂无评论

Effects of Feeding on Insect Larvae Treated With Pesticide on the Biological and Biochemical Characteristics of Arma chinensis

引用

ArCHIVES OF INSECT BIOCHEMISTrY ANd PHYSIOLOGY 2025年第2期118卷 e70042页

作者： Zheng, Hui Cai, Hailin Mo, Yunfei Guo, Xihui Wang, Wei Yang, Zhongxia Hunan Agr Univ Coll Plant Protect Hunan Prov Key Lab Biol & Control Plant Dis & Inse Changsha Peoples R China Hunan Tobacco Co Coll Plant Protect Hunan Prov Key Lab Biol & Control Plant Dis & Inse Tobacco Prod Technol CtrChangsha Branch Changsha Peoples R China

The effects of feeding on insect larvae treated with pesticide on the biological and biochemical characteristics of Arma chinensis were investigated. In the F0 generation, the developmental duration and preoviposition period were shortened, the average number of eggs laid was reduced, and the net reproductive rate and mean generation time were significantly lower in the treatment group compared to those in the control group. The average number of eggs laid by the F1 generation of A. chinensis was lower in the treatment group. The intrinsic rates of increase, finite rates of increase and net reproductive rates were significantly lower in the F1 generation in the treatment group than those in the control group. The activities of CarE and GST were significantly induced, while the activity of AChE was inhibited in the A. chinensis in the treatment group. The activities of trypsin and THL were significantly induced in the treatment group, while the activity of LPS was not significantly changed. At the population level, Enterococcaceae were cultured only from the intestines of the A. chinensis in the treatment group. At the genus level, in addition to Serratia, Yokenella and Klebsiella, which were consistent with the control group, the genus Enterococcus was also cultured in the treatment group. When controlling P. rapae in the field, pesticides should be reasonably selected, and an appropriate time should be chosen for the release of A. chinensis to reduce the impact on natural enemies and to achieve synergistic chemical and biological control.

关键词： Arma chinensis culturable bacteria detoxification and digestive enzymes growth and development synergies

来源：评论

学校读者我要写书评

暂无评论

Optimized Biosynthetic Pathway for Nonnatural Amino Acids: An Efficient Approach for L-2-Aminobutyric Acid Production

引用

BIOTECHNOLOGY ANd BIOENGINEErING 2025年第7期122卷 1856-1872页

作者： Xu, Jianmiao Tao, Yuan Shan, Qilan Feng, Yan Wang, Yihong Liu, Zhiqiang Zheng, Yuguo Zhejiang Univ Technol Natl & Local Joint Engn Res Ctr Biomfg Chiral Chem Hangzhou Peoples R China Zhejiang Univ Technol Coll Biotechnol & Bioengn Key Lab Bioorgan Synth Zhejiang Prov Hangzhou Peoples R China

L-2-Aminobutyric acid (L-2-ABA) is a nonnatural chiral alpha-amino acid which is widely used in various chiral pharmaceuticals and medical intermediates. Currently, the microbial metabolic engineering approach to enable Escherichia coli to produce L-2-ABA autonomously exists the problem of low synthesis efficiency, limiting its large-scale application. In this study, we successfully constructed a strain of E. coli that can produce L-2-ABA efficiently via multi-pathway transformation. Firstly, the growth defect of the start strain was restored by the help of screening transcriptional regulators. To maximize the accumulation of L-2-ABA, enhancements were made to the main synthetic pathways as well as cofactor systems and energy supply. Subsequently, transport proteins associated with osmotic stress tolerance were modified to improve adaptability of the strain during fermentation. Ultimately, the titer of L-2-ABA reached 42.14 g/L through the final strain ABAT38 in a 5-liter bioreactor, with a productivity of 0.40 g/L/h and a glucose conversion of 0.39 g/g, which exceeded the highest levels reported before. The strategies proposed in this study contribute to the production of L-2-ABA. At the same time, it has reference significance for the biosynthesis of related nonnatural amino acids with phosphoenolpyruvate as the intermediate metabolite.

关键词： biosynthesis fermentation L-2-Aminobutyric acid multi-pathway engineering nonnatural amino acids osmotic stress tolerance

来源：评论

学校读者我要写书评

暂无评论

deformation mechanism and support technology of deep asymmetrical soft rock roadway

引用

PHYSICS OF FLUIdS 2025年第3期37卷

作者： Liu, Shi-Qi Wang, Huan-Ling Lu, Jian Chi, Ming-Bo Hohai Univ Res Inst Geotech Engn Nanjing 210098 Peoples R China Taiyuan Univ Technol Coll Min Technol Taiyuan 030024 Peoples R China China Acad Safety Sci & Technol Beijing 100012 Peoples R China

The support technology for roadway rock has always posed significant challenges in mining and tunnel engineering. This is particularly true for deep asymmetrical soft rock roadway, for which no effective and mature reference technology currently exists. This paper provides a comprehensive analysis of the deformation mechanism and support technology for deep soft rock roadway at the Qingyun mine. Based on field investigation and theoretical analysis, we summarize the deformation mechanism and its influencing factors. Numerical simulation results of excavation indicate that the improved support scheme effectively controls roadway deformation, with 68.0 mm for the roof, 26.3 mm for the floor, and 45.12 and 44.98 mm for the two sidewalls. Moreover, the plastic zone depth is significantly reduced by 0.5 m to 2.0 m of roadway. Field monitoring data, including peephole, acoustic velocity, and bolt stress measurement, strongly support the positive impact of the improved support on surrounding rock deformation and stability. As the working face advances, the influence of mining disturbance on the roadway increases. Compared to primary support, the deformation of improved support scheme reduces by 17 to 65 mm. The outline of the loose circle under the improved support scheme is mapped, showing an overall depth reduction of 0.58 and 0.20 m compared to conditions without support and with primary support, respectively. We hope this research serves as a valuable reference for other soft rock engineering projects.

关键词： Mine roof supports

来源：评论

学校读者我要写书评

暂无评论

975 nm multimode semiconductor lasers with high-order Bragg diffraction gratings

引用

Journal of Semiconductors 2024年第3期45卷 38-44页

作者： Zhenwu Liu Li Zhong Suping Liu Xiaoyu Ma National Engineering Research Center for Optoelectronic Devices Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China

The 975 nm multimode diode lasers with high-order surface Bragg diffraction gratings have been simulated and calcu-lated using the 2d finite difference time domain(FdTd)algorithm and the scattering matrix method(SMM).The periods and etch depth of the grating parameters have been optimized.A board area laser diode(BA-Ld)with high-order diffraction grat-ings has been designed and *** output powers up to 10.5 W,the measured spectral width of full width at half maxi-mum(FWHM)is less than 0.5 *** results demonstrate that the designed high-order surface gratings can effectively nar-row the spectral width of multimode semiconductor lasers at high output power.

关键词： laser diodes distributed Bragg reflector high order gratings high power laser diodes narrow spectrum width

来源：评论

学校读者我要写书评

暂无评论

Insights into the enhancement of food flavor perception:strategies,mechanism and emulsion applications

引用

Food Science and Human Wellness 2024年第5期13卷 2410-2424页

作者： Luyao Huang Yujie dai Fan Zhang Longtao Zhang Baodong Zheng Yi Zhang Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition Ministry of EducationFuzhou 350002China College of Food Science Fujian Agriculture and Forestry UniversityFuzhou 350002China

The core drivers of the modern food industry are meeting consumer demand for tasty and healthy *** application of food flavor perception enhancement can help to achieve the goals of salt-and sugar-reduction,without compromising the sensory quality of the original food,and this has attracted increasing research *** analysis of bibliometric results from 2002 to 2022 reveals that present flavor perception enhancement strategies(changing ingredient formulations,adding salt/sugar substitutes,emulsion delivery systems)are mainly carry out based on sweetness,saltiness and *** systems is becoming a novel research foci and development trends of international food flavor perception-enhancement *** structured design of food emulsions,by using interface engineering technology,can effectively control,or enhance the release of flavor ***,this review systematically summarizes strategies,the application of emulsion systems and the mechanisms of action of food flavor perception-enhancement technologies,based on odor-taste cross-modal interaction(OTCMI),to provide insights into the further structural design and application of emulsion systems in this field.

关键词： Food flavor perception Emulsion Mechanism Bibliometric

来源：评论

学校读者我要写书评

暂无评论

Two-temperature thermodynamic and transport properties of C4F7N-CO2-O2 mixture as an arc-extinguishing gas

引用

JOUrNAL OF PHYSICS d-APPLIEd PHYSICS 2025年第16期58卷 165502-165502页

作者： Wang, Guanyu Zhang, Boya Cao, Minchuan deng, Junwei Shi, Yuying Li, Bochen Li, Xingwen Murphy, Anthony B. Xi An Jiao Tong Univ State Key Lab Elect Insulat & Power Equipment Xian 710049 Shaanxi Peoples R China CSIRO Mfg POB 218 Lindfield NSW 2070 Australia

Given the significant greenhouse effect of SF6, the C4F7N-CO2-O-2 mixture has been identified as one of the most promising eco-friendly arc-extinguishing gases. Switching arcs typically exhibit pronounced non-local thermodynamic equilibrium (NLTE) phenomena in the peripheral regions and at the current zero-crossing point, thereby influencing the thermophysical properties of the plasma. To investigate the impact of NLTE conditions, the thermodynamic properties and transport coefficients of two-temperature (2-T) C4F7N-CO2-O-2 plasma were calculated under the local chemical equilibrium assumption. The results indicate that NLTE conditions significantly affect the properties of the mixture by altering its composition and particle energy, often having a more substantial impact than pressure variations. The generation of CO plays a critical role in shaping the thermodynamic and transport parameters of the plasma due to its molecular stability, particularly under non-equilibrium states. To maximise the arc-extinguishing performance of the gas, recommended oxygen mixing ratios are proposed. The results provide fundamental data for 2-T magnetohydrodynamic modelling of C4F7N gas mixtures in arc simulations.

关键词： C4F7N non-equilibrium plasma two temperature model arc thermodynamic properties transport coefficients

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：