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减少猪场臭气生成的饲粮配制技术与养殖技术研究进展

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中国畜牧杂志 2024年第5期60卷 74-79页

作者：王四新刘辉张董燕季海峰北京市农林科学院畜牧兽医研究所北京100097

随着养殖规模和集约化程度的不断提高,养殖场产生的臭气严重危害人畜健康和周边生态环境,臭气污染问题备受关注。解决猪场臭气污染的重要途径之一是减少臭气物质产生,而改进饲粮技术和养殖技术是减少猪场臭气物质生成的关键技术措施。... 详细信息

随着养殖规模和集约化程度的不断提高,养殖场产生的臭气严重危害人畜健康和周边生态环境,臭气污染问题备受关注。解决猪场臭气污染的重要途径之一是减少臭气物质产生,而改进饲粮技术和养殖技术是减少猪场臭气物质生成的关键技术措施。本文综述了猪场臭气组成及产生途径、猪场中关键致臭物质及筛选方法、有效减少臭气生成的饲粮技术和养殖技术,旨在为加强猪场臭气方面的基础研究及减排技术的推广提供参考,进一步推进养猪业的高质量发展。

关键词：臭气减量饲粮技术养殖技术猪场

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低蛋白质饲粮中添加益生菌对育肥猪生长性能、粪便菌群组成和代谢组特征的影响

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动物营养学报 2024年第5期36卷 2886-2900页

作者：王四新季海峰刘辉张董燕王晶陈美霞北京市农林科学院畜牧兽医研究所北京100097

本试验旨在探讨低蛋白质饲粮中添加益生菌对育肥猪生长性能、粪便菌群组成和代谢组特征的影响。选取平均体重为(80.56±0.45)kg的长×大育肥猪90头,随机分为3组,分别为对照组、试验Ⅰ组和试验Ⅱ组,每组3圈(重复),每圈10头(阉公猪与母猪... 详细信息

本试验旨在探讨低蛋白质饲粮中添加益生菌对育肥猪生长性能、粪便菌群组成和代谢组特征的影响。选取平均体重为(80.56±0.45)kg的长×大育肥猪90头,随机分为3组,分别为对照组、试验Ⅰ组和试验Ⅱ组,每组3圈(重复),每圈10头(阉公猪与母猪各占1/2)。对照组饲喂含14%蛋白质的常规蛋白质饲粮,试验Ⅰ组饲喂含12%蛋白质的低蛋白质饲粮,试验Ⅱ组饲喂添加益生菌的低蛋白质饲粮(每千克低蛋白质饲粮中含2.0×10^(9)CFU乳酸菌和2.0×108CFU酿酒酵母)。预试期5 d,正试期42 d。结果显示:1)与对照组和试验Ⅰ组相比,试验Ⅱ组的平均日增重显著提高(P<0.05),料重比显著降低(P<0.05)。2)与对照组和试验Ⅱ组相比,试验Ⅰ组粪便中颤螺菌目、毛螺菌目、毛螺菌科、瘤胃球菌科、UCG-005、粪杆菌属、小杆菌属和福涅氏菌属的相对丰度显著降低(P<0.05),解纤维素菌属的相对丰度显著增加(P<0.05);试验Ⅱ组粪便中毛螺菌目、乳杆菌目和毛螺菌科的相对丰度显著高于对照组(P<0.05)。3)试验Ⅰ组与对照组、试验Ⅱ组与对照组以及试验Ⅰ组与试验Ⅱ组粪便样品间分别发现9、37和41种差异代谢物;不同组间差异代谢物的KEGG通路富集分析显示共有27条富集通路;与对照组和试验Ⅰ组相比,试验Ⅱ组粪便中5-羟基吲哚乙酸的表达量显著升高(P<0.05),肾上腺素的表达量显著降低(P<0.05);试验Ⅰ组粪便中N-乙酰-L-苯丙氨酸的表达量显著低于对照组和试验Ⅱ组(P<0.05);试验Ⅱ组粪便中L-谷氨酰胺、D-葡萄糖醛酸的表达量显著高于试验Ⅰ组(P<0.05)。4)与对照组相比,试验Ⅰ组和试验Ⅱ组粪便中总支链脂肪酸、总短链脂肪酸、氨氮和粪臭素含量显著减少(P<0.05);与试验Ⅰ组相比,试验Ⅱ组粪便中乙酸含量显著减少(P<0.05),丁酸含量显著增加(P<0.05)。综上所述,在低蛋白质饲粮中添加益生菌(乳酸菌和酿酒酵母)可改善育肥猪的肠道菌群结构及其代谢物表达,减少粪便中总短链脂肪酸、氨氮和粪臭素含量,提高育肥猪的平均日增重和饲料转化效率。

关键词：低蛋白质饲粮育肥猪益生菌生长性能粪便菌群代谢组

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融合数学建模思想的物流管理课程教学研究

物流科技 2024年第10期47卷 182-184页

作者：纪海峰杨真真南京邮电大学理学院江苏南京210023

随着经济的全球化,物流业的发展急速加快,促进培养了更多的物流管理专业人才。数学建模作为联系实际问题和数学的桥梁,在人才培养上有着重要的作用。在物流管理专业课程的教学中融入数学建模的思想和过程,不仅可以丰富课堂教学内容,而... 详细信息

随着经济的全球化,物流业的发展急速加快,促进培养了更多的物流管理专业人才。数学建模作为联系实际问题和数学的桥梁,在人才培养上有着重要的作用。在物流管理专业课程的教学中融入数学建模的思想和过程,不仅可以丰富课堂教学内容,而且能够培养学生解决实际问题的能力,提高学生的综合素质。文章首先详细介绍了数学建模的基本概念和流程,分析了其在物流管理中的重要性,然后以物流中心选址为例,研究了数学建模在物流管理课程教学中的应用。

关键词：数学建模物流管理高等教育

Polyoxometalate-Based Porous Metal-Organic Gel for High-Efficiency Ultrasound-Assisted Oxidative Desulfurization of Model Fuel

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China Petroleum Processing & Petrochemical Technology 2022年第3期24卷 21-31页

作者： ji haifeng Liu Shuting Shi Hongfei Wang Weidong School of Petroleum and Chemical Engineering Jilin Institute of Chemical TechnologyJilin 132022 School of Chemical Engineering and Resource Recycling Wuzhou UniversityWuzhou 543033

A novel heterogeneous catalyst for ultrasound-assisted oxidative desulfurization(UAODS)was designed and synthesized by confining polyoxometalates(POMs)clusters within porous metal-organic *** catalyst microstructures were characterized by XRD,SEM-EDX,FT-IR,N_(2)adsorption-desorption,and *** of POM loading,catalyst dosage,and ultrasonic power were also *** indicate that 60%-PMA@MOX(Al)exhibits optimal catalytic activity,with a sulfur removal rate of 98.61%and excellent ***,a kinetic study of different desulfurization approaches demonstrates that the unique thermal and cavitation effects of ultrasound can effectively improve the efficiency of oxidative desulfurization.

关键词： ultrasound metal-organic gel oxidative desulfurization polyoxometalates

Design and Synthesis of Multi-Functional Polymeric Binders for High-Performance Lithium-Sulfur Batteries Based on Ring Opening Polymerization of Thiolactone

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Chinese Journal of Chemistry 2023年第20期41卷 2619-2627页

作者： Yuqing Zhao Shiqun Geng Gaojie Yan Xiongwei Qu haifeng ji Yi Feng Xiaojie Zhang Hebei Key Laboratory of Functional Polymers Department of Polymer Materials and EngineeringHebei University of TechnologyTianjin300130 China

The application of high-performance lithium-sulfur(Li-S)batteries is severely influenced by the“shuttle effect”of polysulfides and the volume change of sulfur ***,two different polymeric binders SOT-A and SOT-C with three-dimensional network structure containing polar groups(sulfhydryl groups,amide groups and amino groups)are synthesized by the nucleophilic ring-opening polymerization(ROP)of thiolactone with amino *** network structure formed by hydrogen bonds and functional groups can resist the volume change of the *** sulfhydryl groups and the S-S bond formed by oxidative dehydrogenation of sulfhydryl group participate in the charge and discharge process of the battery as active materials,which improves the discharge specific capacity of the *** functional groups have strong chemisorption on polysulfides and effectively inhibit the“shuttle effect”.The electrochemical performances of Li-S batteries containing SOT-A and SOT-C binders are significantly *** 1 C rate,the batteries achieve initial discharge specific capacity of 871 and 837 mAh·g^(-1),respectively,and have 83.9%and 62.5%capacity retention after 500 cycles.

关键词： Li-S batteries Polymeric binders Nucleophilic ring-opening polymerization Polar groups Three-dimensional network

Highly stretchable,conductive,and wide-operating temperature ionogel based wearable triboelectric nanogenerator

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Nano Research 2023年第9期16卷 11638-11645页

作者： Qianqian Zhu Weiqiang Liao Cong Sun Xuan Qin Fangjia Zhang haifeng ji Yuqi Li Zhen Wen Xuhui Sun Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of EducationCollege of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004China

The rapid development of wearable electronic products brings challenges to corresponding power *** this work,a thermally stable and stretchable ionogel-based triboelectric nanogenerator(SI-TENG)for biomechanical energy collection is *** ionic conductivity of the ionogel increased to 0.53 S·m^(−1) through optimal regulation of the amount of aminoterminated hyperbranched polyamide(NH2-HBP),which also has high strain of 812%,excellent stretch recovery,and wide operating temperature range of−80 to 250°*** SI-TENG with this ionogel as electrode and silicone rubber both as the triboelectric layer and encapsulation layer exhibits high temperature stability,stretchability,and *** adding appropriate amount of nano SiO2 to triboelectric layer,the output performance is further improved by 93%.Operating in singleelectrode mode at 1.5 Hz,the outputs of a SI-TENG with an area of 3 cm×3 cm are 247 V,11.7μA,78 nC,and 3.2 W·m^(−2),*** was used as a self-charging power supply to charge a 22μF capacitor to 1.6 V in 167 s with the palm patting and then to power the electronic ***,the SI-TENG can also be used as a self-powered motion sensor to detect the amplitude and frequency of finger bending,human swallowing,nodding,and shaking of the head motion changes through the analysis of the output voltage.

关键词： triboelectric nanogenerator ionogel self-powered motion sensor stretchable temperature stability

维持治疗期中年女性精神分裂症患者应用不同抗精神病药治疗方案的效果

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中国药物滥用防治杂志 2024年第4期30卷 615-618页

作者：李欣馨徐勋龙刘洁仪季海峰徐成敏上海市长宁区精神卫生中心精神科上海200335 上海交通大学附属同仁医院心内科上海200336 上海市疾病预防控制中心体外毒理检测与评价室上海200336 山东生精神卫生中心精神科山东济南250014

目的:分析不同抗精神病药物使用方案对中年女性精神分裂症患者的影响。方法:选择2022年12月—2023年12月上海市长宁区精神卫生中心精神科康复区长期住院的50例女性精神分裂症患者,根据抗精神病药物使用的组合方式分为奥氮平单一用药组... 详细信息

目的:分析不同抗精神病药物使用方案对中年女性精神分裂症患者的影响。方法:选择2022年12月—2023年12月上海市长宁区精神卫生中心精神科康复区长期住院的50例女性精神分裂症患者,根据抗精神病药物使用的组合方式分为奥氮平单一用药组和奥氮平联合阿立哌唑用药组,比较两组泌乳素、白细胞、锥体外系不良反应(EPS)、病情稳定性。结果:维持治疗期,单一用药组泌乳素水平高于联合用药组(P0.05);单一用药组EPS、复发发生率与联合用药组比较,差异无统计学意义(P>0.05)。结论:在维持治疗期,奥氮平联合阿立哌唑有利于降低中年女性精神分裂症患者泌乳素水平,且安全性较高。

关键词：抗精神病药物维持治疗中年女性精神分裂症

Self-Assembled Porous-Reinforcement Microstructure-Based Flexible Triboelectric Patch for Remote Healthcare

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Nano-Micro Letters 2023年第7期15卷 324-336页

作者： Hao Lei haifeng ji Xiaohan Liu Bohan Lu Linjie Xie Eng Gee Lim Xin Tu Yina Liu Peixuan Zhang Chun Zhao Xuhui Sun Zhen Wen Institute of Functional Nano and Soft Materials(FUNSOM) Joint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Electronic Engineering School of Advanced TechnologyXi’an Jiaotong-Liverpool UniversitySuzhou 215123People’s Republic of China Department of Applied Mathematics School of Mathematics and PhysicsXi’an Jiaotong-Liverpool UniversitySuzhou 215123People’s Republic of China Department of Electrical and Electronic Engineering University of LiverpoolLiverpool L693GJUK jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow UniversitySuzhou 215123JiangsuPeople’s Republic of China

Realizing real-time monitoring of physiological signals is vital for preventing and treating chronic diseases in elderly individuals. However,wearable sensors with low power consumption and high sensitivity to both weak physiological signals and large mechanical stimuli remain ***, a flexible triboelectric patch(FTEP) based on porous-reinforcement microstructures for remote health monitoring has been reported. The porousreinforcement microstructure is constructed by the self-assembly of silicone rubber adhering to the porous framework of the PU sponge. The mechanical properties of the FTEP can be regulated by the concentrations of silicone rubber dilution. For pressure sensing, its sensitivity can be effectively improved fivefold compared to the device with a solid dielectric layer, reaching 5.93 kPa^(-1) under a pressure range of 0–5 kPa. In addition, the FTEP has a wide detection range up to 50 kPa with a sensitivity of 0.21 kPa^(-1). The porous microstructure makes the FTEP ultra-sensitive to external pressure, and the reinforcements endow the device with a greater deformation limit in a wide detection range. Finally, a novel concept of the wearable Internet of Healthcare(Io H) system for real-time physiological signal monitoring has been proposed, which could provide real-time physiological information for ambulatory personalized healthcare monitoring.

关键词： Pressure sensor Triboelectric nanogenerator Porous dielectric layer Physiological signals Internet of Healthcare

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青岛地铁土压平衡盾构碎石土改良方法研究

岩土工程技术 2024年第1期38卷 7-13页

作者：冀海峰刘卫景赵国梁牛宇哲肖凤春江玉生杨星青岛市地铁四号线有限公司山东青岛266045 中国矿业大学(北京)力学与土木工程学院北京100083

盾构在碎石土地层掘进时经常面临着地层渗透性强、刀盘扭矩大、刀具磨损严重等诸多困难。为解决上述施工难题,以青岛地铁4号线典型的碎石土地层为研究对象,首先通过颗粒筛分、LCPC试验和渗透性试验评价了碎石土的基本特性,结合传统的砂... 详细信息

盾构在碎石土地层掘进时经常面临着地层渗透性强、刀盘扭矩大、刀具磨损严重等诸多困难。为解决上述施工难题,以青岛地铁4号线典型的碎石土地层为研究对象,首先通过颗粒筛分、LCPC试验和渗透性试验评价了碎石土的基本特性,结合传统的砂土和黏性土改良方案设计了5组碎石土改良配比方案,对不同配比方案进行坍落度试验、渗透性试验和直剪试验,分析了不同改良指标碎石土的流塑性、渗透性及抗剪力学特性,根据实际工程中盾构刀盘扭矩的变化情况验证了泡沫与聚合物组合改良的最佳方案。研究表明:7%浓度泡沫与5%浓度聚合物配比的改良剂能够有效降低碎石土的渗透系数,同时起到降低刀盘扭矩的作用。

关键词：地铁土压平衡盾构碎石土坍落度渗透性直剪试验