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Essential oils improve nursery pigs' performance and appetite via modulation of intestinal health and microbiota

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Animal Nutrition 2024年第1期16卷 174-188页

作者： Bi-Chen Zhao Tian-hao Wang Jian Chen bai-hao Qiu Ya-Ru Xu Jin-Long Li College of Veterinary Medicine Northeast Agricultural University Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine Northeast Agricultural University Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment Northeast Agricultural University

Optimal intestinal health and functionality are essential for animal health and performance,and simultaneously intestinal nutrient transporters and intestinal peptides are also involved in appetite and feed intake control mechanisms.Given the potential of essential oil (EO) in improving animal performance and improving feed palatability,we hypothesized that dietary supplementation of cinnamaldehyde and carvacrol could improve performance and appetite of nursery pigs by modulating intestinal health and microbiota.Cinnamaldehyde (100 mg/kg),carvacrol (100 mg/kg),and their mixtures(including 50 mg/kg cinnamaldehyde and 50 mg/kg carvacrol) were supplemented into the diets of 240 nursery pigs for 42 d,and data related to performance were measured.Thereafter,the influence of EO on intestinal health,appetite and gut microbiota and their correlations were explored.EO supplementation increased (P<0.05) the body weight,average daily gain (ADG) and average daily feed intake (ADFI) of piglets,and reduced (P<0.05) diarrhea rates in nursery pigs.Furthermore,EO increased (P<0.05) the intestinal absorption area and the abundance of tight junction proteins,and decreased (P<0.05) intestinal permeability and local inflammation.In terms of intestinal development and the mucus barrier,EO promoted intestinal development and increased (P<0.05) the number of goblet cells.Additionally,we found that piglets in the EO-supplemented group had upregulated (P<0.05) levels of transporters and digestive enzymes in the intestine,which were significantly associated with daily gain and feed utilization.In addition,EO supplementation somewhat improved appetite in nursery pigs,increased the diversity of the gut microbiome and the abundance of beneficial bacteria,and there was a correlation between altered bacterial structure and appetite-related hormones.These findings indicate that EO is effective in promoting growth performance and nutrient absorption as well as in regulating appetite by improving intestinal health and bacterial structure.

关键词： Nursery pig Essential oil Intestinal health Appetite Microbiota

Heat distribution model under hydrogen-rich low-carbon conditions in blast furnace

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Journal of Iron and Steel Research(International) 2024年第3期31卷 584-594页

作者： Gang Wang Jun Xu Kun He Zhong-ping Zou hao bai School of Metallurgy and Ecological Engineering University of Science and Technology BeijingBeijing 100083China CISDI Low-Carbon Blast Furnace Research Office MCC Low-Carbon Technology Research InstituteChongqing 401122China

Low carbon development of blast furnaces is one of the key technological directions in the current development of ironmaking.Owing to the differences in the physical and chemical properties of hydrogen and carbon,hydrogen-rich media entering a blast furnace will change the heat distribution,thus affecting the stability of production.Accordingly,a heat distribution model was proposed to study the temperature distribution in a blast furnace,simultaneously considering gas-solid heat exchange,slag and iron melting,and chemical reactions.The model was used to analyze the temperature distribution of a 2300 m^(3) blast furnace and was verified via comparison with actual production data.Subsequently,the effects of the injection rate of hydrogen-rich media,H2 concentration,and oxygen enrichment rate of the blast on the temperature distribution were investigated.Results indicated that the increase in the injection rate of the hydrogen-rich media decreased the amount of direct reduction and led to an increase in the furnace temperature.Furthermore,an increase in the oxygen enrichment rate led to a decrease in the furnace temperature,but could reduce the solid fuel ratio,while the change in H2 concentration had less effect on the temperature distribution.The combination of hydrogen-rich media injection and the increase in the oxygen enrichment rate would help to adjust the temperature distribution to the same level as the conventional blast furnace conditions.

关键词： Heat distribution Blast furnace Low-carbon condition Hydrogen enrichment Calculation model

Recent Progress of Bio-inspired Camouflage Materials:From Visible to Infrared Range

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Chemical Research in Chinese Universities 2023年第1期39卷 19-29页

作者： BU Xiaochen bai hao State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027China

The adaptability of biological organisms to the environment is reflected in many aspects,especially in their camouflage of appearance.Inspired by biological camouflage strategies,a number of adaptive camouflage materials and devices have been developed to protect soldiers,vehicles,or equipment in the military.Today,the need for adaptive camouflage extends into people’s lives,whose privacy and information security need to be protected in the era of big data.Herein,a review is provided on the recent advancements of adaptive camouflage from the perspective of biological organisms and bio-inspired materials.Firstly,according to different biological mechanisms,we review the typical organisms that use pigmentary color,structural color,and morphological variation for adaptive camouflage,as well as those combine these strategies.Then,we provide an up-to-date review on recent developments in bio-inspired adaptive camouflage materials and devices with an emphasis on visible,infrared,and multispectral camouflage.At last,this review concludes the challenges and prospects for the future development of adaptive camouflage materials.It is noteworthy that there is never the best camouflage.To counter advanced detection techniques,it is necessary to unremittingly develop new materials and technologies to meet the increasing need for adaptive camouflage.

关键词： Bio-inspired material Adaptive camouflage Infrared camouflage Multispectral adaptability Structural color

A review of reservoir damage during hydraulic fracturing of deep and ultra-deep reservoirs

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Petroleum Science 2024年第1期21卷 384-409页

作者： Kun Zhang Xiong-Fei Liu Dao-Bing Wang Bo Zheng Tun-hao Chen Qing Wang hao bai Er-Dong Yao Fu-Jian Zhou National Key Laboratory of Petroleum Resources and Engineering China University of Petroleum-BeijingBeijing102249China School of Mechanical Engineering Beijing Institute of Petrochemical TechnologyBeijing102617China Tuha Downhole Operation Company CNPC Xibu Drilling Engineering Company LimitedShanshan838200XinjiangChina

Deep and ultra-deep reservoirs have gradually become the primary focus of hydrocarbon exploration as a result of a series of significant discoveries in deep hydrocarbon exploration worldwide.These reservoirs present unique challenges due to their deep burial depth(4500-8882 m),low matrix permeability,complex crustal stress conditions,high temperature and pressure(HTHP,150-200℃,105-155 MPa),coupled with high salinity of formation water.Consequently,the costs associated with their exploitation and development are exceptionally high.In deep and ultra-deep reservoirs,hydraulic fracturing is commonly used to achieve high and stable production.During hydraulic fracturing,a substantial volume of fluid is injected into the reservoir.However,statistical analysis reveals that the flowback rate is typically less than 30%,leaving the majority of the fluid trapped within the reservoir.Therefore,hydraulic fracturing in deep reservoirs not only enhances the reservoir permeability by creating artificial fractures but also damages reservoirs due to the fracturing fluids involved.The challenging“three-high”environment of a deep reservoir,characterized by high temperature,high pressure,and high salinity,exacerbates conventional forms of damage,including water sensitivity,retention of fracturing fluids,rock creep,and proppant breakage.In addition,specific damage mechanisms come into play,such as fracturing fluid decomposition at elevated temperatures and proppant diagenetic reactions at HTHP conditions.Presently,the foremost concern in deep oil and gas development lies in effectively assessing the damage inflicted on these reservoirs by hydraulic fracturing,comprehending the underlying mechanisms,and selecting appropriate solutions.It's noteworthy that the majority of existing studies on reservoir damage primarily focus on conventional reservoirs,with limited attention given to deep reservoirs and a lack of systematic summaries.In light of this,our approach entails initially summarizing the current knowledge pertaining to the types

关键词： Artificial fracture Deep and ultra-deep reservoir Fracture conductivity Fracturing fluid Hydraulic fracturing Reservoir damage

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Endoscopic ultrasonography-related diagnostic accuracy and clinical significance on small rectal neuroendocrine neoplasms

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World Journal of Gastroenterology 2024年第7期30卷 774-778页

作者： Jun Weng Yu-Fan Chen Shu-Han Li Yan-Hua Lv Ruo-Bing Chen Guo-Liang Xu Shi-Yong Lin Kun-hao bai Department of Endoscopy Sun Yat-Sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina State Key Laboratory of Oncology in South China Guangzhou 510060Guangdong ProvinceChina Guangdong Provincial Clinical Research Center for Cancer Guangzhou 510060Guangdong ProvinceChina Department of Management Clinical Medical College of Tianjin Medical UniversityTianjin 300000China Cancer Prevention Center Sun Yat-Sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina

This research aimed to examine the diagnostic accuracy and clinical significance of endoscopic ultrasonography(EUS)in the context of small rectal neuroendocrine neoplasms(NENs).A total of 108 patients with rectal subepithelial lesions(SELs)with a diameter of<20 mm were included in the analysis.The diagnosis and depth assessment of EUS was compared to the histology findings.The prevalence of NENs in rectal SELs was 78.7%(85/108).The sensitivity of EUS in detecting rectal NENs was 98.9%(84/85),while the specificity was 52.2%(12/23).Overall,the diagnostic accuracy of EUS in identifying rectal NENs was 88.9%(96/108).The overall accuracy rate for EUS in assessing the depth of invasion in rectal NENs was 92.9%(78/84).Therefore,EUS demonstrates reasonable diagnostic accuracy in detecting small rectal NENs,with good sensitivity but inferior specificity.EUS may also assist physicians in assessing the depth of invasion in small rectal NENs before endoscopic excision.

关键词： Rectal neuroendocrine neoplasms Endoscopic ultrasonography Diagnosis Depth of invasion

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独一味:马识途“夜谭”文学及其书场效应

中国社会科学 2024年第5期 141-155,207页

作者：白浩四川师范大学文学院成都610068

马识途有革命家与文学家两个写作身份,这使其创作呈现出正剧与谐剧两种风格,在不同时代也带来不同的接受隔阅。“夜谭”系列真正树立起文学家的艺术自觉,体现出“独一味”的文学品质。“夜谭”文学讲述形式自由开放,在故事一讲故事一听... 详细信息

马识途有革命家与文学家两个写作身份,这使其创作呈现出正剧与谐剧两种风格,在不同时代也带来不同的接受隔阅。“夜谭”系列真正树立起文学家的艺术自觉,体现出“独一味”的文学品质。“夜谭”文学讲述形式自由开放,在故事一讲故事一听故事、讲述者一听书人一故事中人、故事逻辑一剧场现场逻辑一社会生活逻辑三线发力、三线共振,构成一个召唤性共语场,形成书场效应。马识途的俗文学观建立在生活土壤、人民美学、艺术传承自信三大基础上,他的“夜谭”文学表现出丰富民族化、大众化艺术经验的努力。重估马识途文学创作的民族化道路实践,反思雅俗文学融合之意义,对于探究当代文学发展道路和扩展文学史书写格局具有重要意义。

关键词：马识途 “夜谭”文学书场效应民族化道路

基于深度残差神经网络的红外图像超分辨率重构算法

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红外技术 2024年第2期46卷 176-182页

作者：白皓白廷柱北京理工大学光电学院北京100081

提出了一种基于深度残差神经网络的红外灰度图像超分辨率重构算法。首先使用残差卷积模块增加网络深度提高了网络的学习能力,使得卷积层在学习过程中能够利用到更多的邻域信息对于复杂场景有更好的学习能力。然后使用跳跃连接方式增加... 详细信息

提出了一种基于深度残差神经网络的红外灰度图像超分辨率重构算法。首先使用残差卷积模块增加网络深度提高了网络的学习能力,使得卷积层在学习过程中能够利用到更多的邻域信息对于复杂场景有更好的学习能力。然后使用跳跃连接方式增加高频信息传输以实现对于图像细节的增强。实验结果表明,该网络能够有效地丰富重构图像的细节,重构图像中的目标轮廓有明显改善。

关键词：红外图像深度学习超分辨率算法残差网络

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不确定离散半马尔可夫跳变系统的有限时间鲁棒H_(∞)控制

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控制与决策 2024年第3期39卷 836-844页

作者：郑柏浩嵇小辅朱毅江南大学物联网工程学院江苏无锡214122 江南大学轻工过程先进控制教育部重点实验室江苏无锡214122

研究一类不确定离散时间半马尔可夫跳变系统的有限时间鲁棒H_(∞)控制问题.首先,应用半马尔可夫核方法建模离散时间系统的半马尔可夫跳变过程,其中驻留时间的概率密度函数依赖系统当前模态和下一模态,使得所提出理论可考虑不同的驻留时... 详细信息

研究一类不确定离散时间半马尔可夫跳变系统的有限时间鲁棒H_(∞)控制问题.首先,应用半马尔可夫核方法建模离散时间系统的半马尔可夫跳变过程,其中驻留时间的概率密度函数依赖系统当前模态和下一模态,使得所提出理论可考虑不同的驻留时间概率分布类型,针对随机跳变系统有限时间分析中的跳变次数问题,提出估计跳变次数最大值的方法;然后,考虑系统模态驻留时间的上下界,提出新的有限时间有界概念,并保证基于半马尔可夫核方法给出的不确定离散时间半马尔可夫随机跳变系统有限时间有界判据数值可解;接着,在此基础上,分析系统的H_(∞)性能指标,设计模态依赖的状态反馈控制律保证闭环系统的有限时间鲁棒H_(∞)性能;最后,通过2个算例仿真验证所提出理论的可行性和有效性.

关键词：离散时间系统半马尔可夫跳变系统有限时间有界鲁棒H_(∞)控制半马尔可夫核线性矩阵不等式

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反思与重构:中国式现代化道路及其嬉变

江苏行政学院学报 2024年第3期 79-85页

作者：崔会敏白浩天江南大学马克思主义学院江苏无锡214122

中国式现代化呈现对西方现代化模式的反思与重构,其蕴涵坚持人民至上、追求共同富裕、传承优秀传统文化、缔造人类新文明等显著理论特质和实践要求。中国式现代化立足中国实际,反思、融汇世界各国现代化之经验教训,谋划中国语境下的现... 详细信息

中国式现代化呈现对西方现代化模式的反思与重构,其蕴涵坚持人民至上、追求共同富裕、传承优秀传统文化、缔造人类新文明等显著理论特质和实践要求。中国式现代化立足中国实际,反思、融汇世界各国现代化之经验教训,谋划中国语境下的现代化嬉变策略,走出中国特色的现代化路径。从“两个结合”探究这一嬗变理路,表现在以马克思主义原理指导下的现代化理论为行动指南、立足于双重革命交互逆炳变的中国实际、根植于中华优秀传统文化的时代形塑等三个方面。同时,中国式现代化在其内核要义、价值理性、具体方略等三方面也凸显出与西方现代化的差异。

关键词：中国式现代化两个结合嬉变