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EKM型益生菌饲料对畜禽生产性能、健康及粪便碳排放的影响研究 EKM型益生菌饲料对畜禽生产性能、健康及粪便碳排放的影响研究
自然科学史研究 Pub Date : 2026-03-31 DOI: 10.33142/nsr.v3i1.19392
Li Yan, 国光 王, 喜东 翟
{"title":"EKM型益生菌饲料对畜禽生产性能、健康及粪便碳排放的影响研究","authors":"Li Yan, 国光 王, 喜东 翟","doi":"10.33142/nsr.v3i1.19392","DOIUrl":"https://doi.org/10.33142/nsr.v3i1.19392","url":null,"abstract":"本研究旨在系统评价一种基于“药食同源”理念设计的新型复合益生菌饲料（EKM型）对畜禽生产性能、健康指标及粪便碳排放的综合效应。EKM型饲料以酿酒酵母菌、乳酸菌和枯草芽孢杆菌为核心益生菌，协同甘草、黄芪等中药提取物复配而成。试验结果显示：在草食动物（牛、羊、母马）中，饲喂该饲料可显著提升养分消化吸收率30%以上，并大幅改善整体健康水平，其中母马发情率与受孕率显著提高，孕马血清关键生物活性物质含量达到70,000 IU/L以上；在单胃动物（猪、鸡）中，饲料消化率提高40%，消化道与呼吸道疾病发病率降低60%。环境效益分析表明，EKM型饲料能显著抑制粪便恶臭气体排放，草食动物粪便中氨气与甲烷浓度低于1ppm，猪鸡粪便中硫化氢与氨气浓度低于10ppm，表现出明显的减排效果。综上，EKM型益生菌饲料通过调节肠道微生态平衡，实现了促进营养吸收、增强动物健康、改善畜产品品质的多重目标，同时有助于减少养殖环境污染、降低生产成本，为畜牧业绿色可持续发展提供了可行的饲料解决方案。","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"3 1","pages":"5-5"},"PeriodicalIF":0.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
苯并三氮唑醇与TBP在菜籽油中的摩擦学性能 苯并三氮唑醇与TBP在菜籽油中的摩擦学性能
自然科学史研究 Pub Date : 2026-03-31 DOI: 10.33142/nsr.v3i1.19389
宗斌 王, 丽萍 熊, 忠义 何
{"title":"苯并三氮唑醇与TBP在菜籽油中的摩擦学性能","authors":"宗斌 王, 丽萍 熊, 忠义 何","doi":"10.33142/nsr.v3i1.19389","DOIUrl":"https://doi.org/10.33142/nsr.v3i1.19389","url":null,"abstract":"为了解决纯基础油的摩擦学性能不佳无法适应现代工况的需求，本文以苯并三氮唑、环氧氯丙烷为原料，制备了苯并三氮唑醇衍生物BEP，作为菜籽油添加剂，利用四球机评价了添加剂的摩擦学性能，结果表明，制备的添加剂在菜籽油中具有很好的摩擦学性能，并且BEP含磷添加剂磷酸三丁酯TBP复配后，具有较好的极压、抗磨和减摩性能。主要原因是添加剂苯并三氮唑中的氮和TCP中的活性磷在润滑过程中与钢球表面发生了吸附和摩擦化学反应，在钢球的界面形成了一层含磷氮的物理吸附和化学反应复合边界膜，起到了抗磨减摩作用。","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"3 1","pages":"18-18"},"PeriodicalIF":0.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147918050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
生态修复工程对野生动物多样性恢复的影响研究 生态修复工程对野生动物多样性恢复的影响研究
自然科学史研究 Pub Date : 2025-12-31 DOI: 10.33142/nsr.v2i4.18728
瑞 顾
{"title":"生态修复工程对野生动物多样性恢复的影响研究","authors":"瑞 顾","doi":"10.33142/nsr.v2i4.18728","DOIUrl":"https://doi.org/10.33142/nsr.v2i4.18728","url":null,"abstract":"本研究对生态修复工程给野生动物多样性恢复带来的影响予以探讨，在系统梳理国内外相关文献并分析实地调查数据之后发现，生态修复工程能够有效改善野生动物栖息地环境并且推动生物多样性的恢复。研究挑出典型生态修复工程案例，运用野外观察、样方调查以及红外相机监测等方法把修复前后野生动物种类、数量和分布做对比分析，结果显示生态修复工程施行后，研究区域里野生动物种类数量大幅增加、群落结构趋向稳定且濒危物种种群数量也有所上升，其中影响野生动物多样性恢复的关键要素是植被恢复，因为增加植被覆盖度、改善植被结构使野生动物有了更合适的栖息环境，并且研究还发现构建生态廊道、提高栖息地连通性对推动野生动物种群交流与基因流动相当重要，本研究结果为评估生态修复工程生态效益提供科学依据，也能给制定野生动物保护策略、优化生态修复方案提供参考。","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"2 4","pages":"43-43"},"PeriodicalIF":0.0,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
免疫细胞体外扩增阶段的质量稳定性监测及安全性风险评估 免疫细胞体外扩增阶段的质量稳定性监测及安全性风险评估
自然科学史研究 Pub Date : 2025-12-31 DOI: 10.33142/nsr.v2i4.18714
刘红卫
{"title":"免疫细胞体外扩增阶段的质量稳定性监测及安全性风险评估","authors":"刘红卫","doi":"10.33142/nsr.v2i4.18714","DOIUrl":"https://doi.org/10.33142/nsr.v2i4.18714","url":null,"abstract":"目的：建立免疫细胞体外扩增全流程的质量稳定性监测体系，系统评估扩增过程中的安全性风险，为临床级免疫细胞制品的规范化生产提供理论依据与技术支撑。方法：以CD3+T细胞、NK细胞为代表性免疫细胞，构建全链条监测模型，并结合故障模式与影响分析（FMEA）方法，识别扩增过程中的潜在风险点，评估风险等级并制定防控措施。结果扩增第5～7d为细胞活性稳定、活化水平、增殖迅速及功能最强的阶段，第14d细胞增殖放缓，耗竭标志物表达升高，功能活性下降。染色体核型稳定，全流程微生物污染检测均为阴性，通过FMEA方法，共识别出免疫细胞体外扩增全流程中存在12个潜在风险点，其中培养环境CO?浓度波动、培养基批号差异、细胞接种密度偏差为高风险点（RPN≥120），通过实施针对性的干预措施，风险等级降至中低水平。结论：建立免疫细胞体外扩增全流程的质量稳定性监测体系，并结合FMEA风险评估，可以确保免疫细胞制品的质量。","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"2 4","pages":"64-64"},"PeriodicalIF":0.0,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
烧结温度对氧化锰掺杂的铪钛酸钡钙陶瓷压电性能的影响 烧结温度对氧化锰掺杂的铪钛酸钡钙陶瓷压电性能的影响
自然科学史研究 Pub Date : 2025-03-31 DOI: 10.33142/nsr.v2i1.15906
正辉 张, 恒为 周, 红梅 尹
{"title":"烧结温度对氧化锰掺杂的铪钛酸钡钙陶瓷压电性能的影响","authors":"正辉 张, 恒为 周, 红梅 尹","doi":"10.33142/nsr.v2i1.15906","DOIUrl":"https://doi.org/10.33142/nsr.v2i1.15906","url":null,"abstract":"采用传统固相反应方法在1320℃～1520℃的烧结温度（Ts）下得到了Ba0.85Ca0.15Hf0.1Ti0.9O3+0.06 mol%MnO2陶瓷，研究了Ts对陶瓷晶体结构、表面形貌、介电、室温铁电与压电的性能，发现：室温下陶瓷均为钙钛矿型铁电体，相结构为菱形-正交相共存；不同Ts获得的陶瓷居里温度变化不大，值在97～103℃的范围；陶瓷压电系数随Ts增大而增大，Ts=1520℃时，压电系数最大，陶瓷表面晶界较为清晰，晶粒尺寸最大，值分别为384 pC/N和13.49μm，此时室温介电常数1862，介电损耗为0.037，剩余极化强度（Pr）为6.88μC/cm2。","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"2 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147884004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
CaCO3掺杂对铪钛酸钡陶瓷微观结构及电学性能的影响 CaCO3掺杂对铪钛酸钡陶瓷微观结构及电学性能的影响
自然科学史研究 Pub Date : 2025-03-31 DOI: 10.33142/nsr.v2i1.15907
兴国 田, 晓娇 马, 红梅 尹, 恒为 周
{"title":"CaCO3掺杂对铪钛酸钡陶瓷微观结构及电学性能的影响","authors":"兴国 田, 晓娇 马, 红梅 尹, 恒为 周","doi":"10.33142/nsr.v2i1.15907","DOIUrl":"https://doi.org/10.33142/nsr.v2i1.15907","url":null,"abstract":"采用传统的固相反应法在1350℃制备了BaHf0.02Ti0.98O3-xCaCO3 (x = 0.005、0.02、0.05、0.07、0.1、0.15、0.2)陶瓷，通过对陶瓷的微观结构、表面形貌、介电、铁电、压电性能的测试与分析发现：所有BaHf0.02Ti0.98O3+xCaCO3陶瓷样品均呈现出钙钛矿结构的铁电体特征；室温相组成随CaCO3掺杂量的增加T相增强，低温R-O相和O-T相转变温度降低，居里温度略有升高，在x=0.2时最大，值为401K；平均晶粒尺寸均小于纯BaHf0.02Ti0.98O3陶瓷，低温烧结时CaCO3掺杂可减小陶瓷晶粒尺寸；陶瓷剩余极化强度和矫顽电场随CaCO3掺杂量的增加变化相似，均在x=0.07时达到最大值（2Pr=18.6μC/cm2和2Ec=14.5kV/cm），压电系数在x=0.005时最大，值为238pC/N。","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"2 1","pages":"32-32"},"PeriodicalIF":0.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147895214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
基于信号完整性的高速数字电路测试方法优化 基于信号完整性的高速数字电路测试方法优化
自然科学史研究 Pub Date : 2024-12-31 DOI: 10.33142/nsr.v1i3.14923
建荣 蔡, 宗锋 邢, 忠文 邱
{"title":"基于信号完整性的高速数字电路测试方法优化","authors":"建荣 蔡, 宗锋 邢, 忠文 邱","doi":"10.33142/nsr.v1i3.14923","DOIUrl":"https://doi.org/10.33142/nsr.v1i3.14923","url":null,"abstract":"随着信息时代的发展，电子产品在不断地增多，电路板使用的数量与频率都在不断地增多，因此会导致许多信号完整性问题。高速电路设计的一大重要环节便是信号的完整性，信号完整性分析对于高速数字电路设计是具有重要意义的。本文对高速数字电路设计的完整性进行了相关概述，在此基础上对信号完整性的影响主要因素进行了分析，为工程应用做参考，增强高速电路信号完整性。","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"1 3","pages":"122-122"},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[The spirit of self-reliance and the appropriation of Western science: the transition in Chinese literati attitudes toward Western science and its social context, ca. 1700-60]. [自立精神与西方科学的挪用:中国文人对西方科学态度的转变及其社会背景，约1700-60年]。
自然科学史研究 Pub Date : 2002-01-01
Qi Han
{"title":"[The spirit of self-reliance and the appropriation of Western science: the transition in Chinese literati attitudes toward Western science and its social context, ca. 1700-60].","authors":"Qi Han","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"21 3","pages":"210-21"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28894692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[A Chinese translation of Ambroise Pare's Anatomie]. [安布罗斯·帕雷的《解剖学》的中文翻译]。
自然科学史研究 Pub Date : 2002-01-01
Nicolas Standaert
{"title":"[A Chinese translation of Ambroise Pare's Anatomie].","authors":"Nicolas Standaert","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":58136,"journal":{"name":"自然科学史研究","volume":"21 3","pages":"269-82"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28894693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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