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Searching for^(76)Ge neutrinoless double beta decay with the CDEX-1B experiment

Chinese Physics C 2024年第10期48卷 11-22页

作者： Bing-Tao Zhang Jun-Zheng wang Li-Tao Yang Qian Yue Ke-Jun Kang Yuan-jing Li Hai-Peng An C.Greeshma Jian-Ping Chang Yun-Huan Chen Jian-Ping cheng Wen-han Dai Zhi Deng Chang-Hao Fang Xin-Ping Geng Hui Gong Qiu-Ju Guo Xu-Yuan Guo Li He Sheng-Ming He jin-Wei Hu han-Xiong Huang Tu-Chen Huang Hai-Tao Jia Xi Jiang S.Karmakar Hao-Bin Li Jian-Min Li jin Li Qian-Yun Li Ren-Ming-Jie Li Xue-Qian Li Yu-Lan Li Yi-Fan Liang Bin Liao Fong-Kay lin Shin-Ted lin Jia-Xuan Liu Shu-Kui Liu Yan-Dong Liu Yu Liu Yuan-Yuan Liu Zhong-Zhi Liu Hao ma Yu-Cai mao Qi-Yuan Nie jin-Hua Ning Hui Pan Ning-Chun Qi Jie Ren Xi-Chao Ruan Ze She manoj Kumar Singh Tian-Xi Sun Chang-Jian Tang Wei-You Tang Yang Tian Guang-Fu wang Li wang Qing wang Yu-Feng wang Yun-Xiang wang Henry-Tsz-King Wong Shi-Yong Wu Yu-cheng Wu Hao-Yang Xing Rui Xu Yin Xu Tao Xue Yu-Lu Yan Nan Yi Chun-Xu Yu Hai-Jun Yu Jian-Feng Yue Ming zeng Zhi zeng Feng-Shou Zhang Lei Zhang Zhen-Hua Zhang Zhen-Yu Zhang Kang-Kang Zhao Ming-Gang Zhao Ji-Fang Zhou Zu-Ying Zhou jing-Jun Zhou Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084 Department of Physics Tsinghua UniversityBeijing 100084 Institute of Physics Academia SinicaTaipei 11529 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875 College of Physics Sichuan UniversityChengdu 610065 School of Physics Peking UniversityBeijing 100871 Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen UniversityZhuhai 519082 School of Physics Nankai UniversityTianjin 300071 Department of Physics Banaras Hindu UniversityVaranasi 221005 Department of Physics Beijing Normal UniversityBeijing 100875

We operated a p-type point contact high purity germanium(PPCGe)detector(CDEX-1B,1.008 kg)in the China jinping Underground Laboratory(CJPL)for 500.3 days to search for neutrinoless double beta(0νββ)decay of^(76)Ge.A total of 504.3 kg⋅day effective exposure data was *** anti-coincidence and the multi/single-site event(MSE/SSE)discrimination methods were used to suppress the background in the energy region of interest(ROI,1989–2089 keV for this work)with a factor of 23.A background level of 0.33 counts/(keV⋅kg⋅yr)was *** lower limit on the half life of^(76)Ge 0νββdecay was constrained as T_(1/2)^(0ν)>1.0×10^(23)yr(90%C.L.),corresponding to the upper limits on the effective majorana neutrino mass:<3.2–7.5 eV.

关键词： neutrinoless double beta decay CDEX point-contact germanium detector ^(76)Ge

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基于代谢组学分析溃疡性结肠炎模型大鼠结肠组织代谢特征及疾病机制

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中国老年学杂志 2024年第2期44卷 372-376页

作者：王佳林马秀兰韩金荣朱西杰宁夏医科大学护理学院宁夏银川750004 宁夏医科大学中医药现代化教育部重点实验室宁夏银川750004 宁夏医科大学中医学院宁夏银川750004

目的研究溃疡性结肠炎(UC)模型大鼠结肠组织代谢物质差异,探索UC疾病机制。方法采用2,4,6-三硝基苯磺酸(TNBS)-乙醇复合造模法建立UC大鼠模型,采用超高效液相色谱-四极杆-飞行时间串联质谱法(UPLC-Q-TOF-MS/MS)技术检测,结合多元统计分... 详细信息

目的研究溃疡性结肠炎(UC)模型大鼠结肠组织代谢物质差异,探索UC疾病机制。方法采用2,4,6-三硝基苯磺酸(TNBS)-乙醇复合造模法建立UC大鼠模型,采用超高效液相色谱-四极杆-飞行时间串联质谱法(UPLC-Q-TOF-MS/MS)技术检测,结合多元统计分析方法,进行代谢组学数据分析。结果根据筛选条件变量权重(VIP)>1、Phanolamine;下调物质2种:[(2S)-2-hexadecanoyloxy-3-tetradecanoyloxypropyl](6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoate、LPC(O-16∶1/0∶0)。主要涉及氨基酸代谢、脂质代谢两个代谢途径。结论UC疾病发生过程中与氨基酸、脂质物质代谢异常有关,其疾病机制可能与苯丙氨酸代谢途径发生改变及脂质中甘油磷脂类、三酰甘油代谢异常相关联。

关键词：溃疡性结肠炎超高效液相色谱-四极杆-飞行时间串联质谱法(UPLC-Q-TOF-MS/MS) 代谢组学氨基酸代谢脂质代谢

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基于细胞膜色谱技术的中药复杂体系目标物筛选分析装备

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西安交通大学学报（医学版） 2024年第3期45卷 351-359页

作者：贺浪冲贺怀贞韩省力张涛王程马维娜西安交通大学药学院陕西西安710061

中药是临床防治疾病的有效药物。由于中药物质基础的复杂性以及成药过程的多环节因素,实现中药全面质量控制的难度相对较大。如果能够在明确中药有效物质与有害物质的基础上,在成药过程中重点控制其含量和限量,则能在很大程度上“纲举... 详细信息

中药是临床防治疾病的有效药物。由于中药物质基础的复杂性以及成药过程的多环节因素,实现中药全面质量控制的难度相对较大。如果能够在明确中药有效物质与有害物质的基础上,在成药过程中重点控制其含量和限量,则能在很大程度上“纲举目张”,有效保障中药质量的可控性和重复性。当前,我国药物研发源头创新技术不足,研发效率有待提升,缺乏高通量的精准分析装备。我国医药分析装备长期依赖进口,高端智能分析装备缺乏,亟需构建“医药智能分析系统”。本项目在国家自然科学基金重大仪器研制项目的资助下,利用细胞膜色谱技术的原创性与独创性,结合生物工程技术和人工智能技术,研制二维细胞膜色谱(2D/CMC)分析仪,对成型的“2D/CMC-中药药效物质分析仪”和“2D/CMC-中药注射液类过敏物分析仪”开展了示范应用,提升了中药药效物质和过敏组分的筛选、发现的效率,并同步进行定性、定量分析,为中药提质增效提供高效分析工具。

关键词：细胞膜色谱中药筛选分析装备

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Effectiveness and safety of early lens extraction during par plana vitrectomy for proliferative diabetes retinopathy with mild cataract:a randomized clinical trial

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International Journal of Ophthalmology(English edition) 2024年第3期17卷 528-536页

作者： Wei-Bo Feng Lei Zheng Ying-Qi Li Yong-Hao Li Guo-Ming Zhang Xian wang Bing-Qian Liu ling jin Yi-Nuo Huang Yang-Fan Yang Zi-Dong Chen Da-Hui ma Qing-Shan Chen Chao-Jun Qin Bing-Min Feng Zhu-Min Yang Xing Huang cheng-Jie Yang Sheng-Hui Liu Ming-Xing Wu State Key Laboratory of Ophthalmology Guangdong Provincial Key Laboratory of Ophthalmology and Visual ScienceGuangdong Provincial Clinical Research Center for Ocular DiseasesZhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510275Guangdong ProvinceChina Shenzhen Eye Hospital Affiliated to jinan University Shenzhen 518040Guangdong ProvinceChina The Affiliated Hospital of Guizhou Medical University Guiyang 550004Guizhou ProvinceChina Guangzhou Aier Eye Hospital Guangzhou 510000Guangdong ProvinceChina

●AIM:To evaluate the effectiveness and safety of early lens extraction during pars plana vitrectomy(PPV)for proliferative diabetic retinopathy(PDR)compared to those of PPV with subsequent cataract surgery.●METHODS:This multicenter randomized controlled trial was conducted in three Chinese hospitals on patients with PDR,aged>45y,with mild *** participants were randomly assigned to the combined(PPV combined with simultaneously cataract surgery,i.e.,phacovitrectomy)or subsequent(PPV with subsequent cataract surgery 6mo later)group and followed up for *** primary outcome was the change in best-corrected visual acuity(BCVA)from baseline to 6mo,and the secondary outcomes included complication rates and medical expenses.●RESULTS:In total,129 patients with PDR were recruited and equally randomized(66 and 63 in the combined and subsequent groups respectively).The change in BCVA in the combined group[mean,36.90 letters;95%confidence interval(CI),30.35–43.45]was significantly better(adjusted difference,16.43;95%CI,8.77–24.08;Phan in the subsequent group(mean,22.40 letters;95%CI,15.55–29.24)6mo after the PPV,with no significant difference between the two groups at *** overall surgical risk of two sequential surgeries was significantly higher than that of the combined surgery for neovascular glaucoma(17.65%vs 3.77%,P=0.005).No significant differences were found in the photocoagulation spots,surgical time,and economic expenses between two *** the subsequent group,the duration of work incapacity(22.54±9.11d)was significantly longer(Phan that of the combined group(12.44±6.48d).●CONCLUSION:PDR patients aged over 45y with mild cataract can also benefit from early lens extraction during PPV with gratifying effectiveness,safety and convenience,compared to sequential surgeries.

关键词： lens extraction pars plana vitrectomy proliferative diabetic retinopathy cataract simultaneously operations

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Measurement of solar pp neutrino flux using electron recoil data from PandaX-4T commissioning run

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Chinese Physics C 2024年第9期48卷 1-7,300页

作者： Xiaoying Lu Abdusalam Abdukerim Zihao Bo Wei Chen Xun Chen Yunhua Chen Chen cheng Zhaokan cheng Xiangyi Cui Yingjie Fan Deqing Fang Lisheng Geng Karl Giboni Xuyuan Guo Chencheng han Ke han Changda He jinrong He Di Huang Junting Huang Zhou Huang Ruquan Hou Yu Hou Xiangdong Ji Yonglin Ju Chenxiang Li Jiafu Li Mingchuan Li Shuaijie Li Tao Li Qing lin Jianglai Liu Congcong Lu lingyin Luo Yunyang Luo Wenbo ma Yugang ma Yajun mao Yue Meng Xuyang Ning Binyu Pang Ningchun Qi Zhicheng Qian Xiangxiang Ren Nasir Shaheed Xiaofeng Shang Xiyuan Shao Guofang Shen manbin Shen lin Si Wenliang Sun Yi Tao Anqing wang Meng wang Qiuhong wang Shaobo wang Siguang wang Wei wang Xiuli wang Xu wang Zhou wang Yuehuan Wei Mengmeng Wu Weihao Wu Yuan Wu Mengjiao Xiao Xiang Xiao Kaizhi Xiong Binbin Yan Xiyu Yan Yong Yang Chunxu Yu Ying Yuan Zhe Yuan Youhui Yun Xinning zeng Minzhen Zhang Peng Zhang Shibo Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Jifang Zhou Ning Zhou Xiaopeng Zhou Yubo Zhou Zhizhen Zhou Research Center for Particle Science and Technology Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong UniversityQingdao 266237China School of Physics and Astronomy Shanghai Jiao Tong UniversityKey Laboratory for Particle Astrophysics and Cosmology(MoE)Shanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China New Cornerstone Science Laboratory Tsung-Dao Lee InstituteShanghai Jiao Tong UniversityShanghai 200240China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213China jinping Deep Underground Frontier Science and Dark matter Key Laboratory of Sichuan Province Liangshan 615000China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Department of Physics Yantai UniversityYantai 264005China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Physics Beihang UniversityBeijing 102206China Beijing Key Laboratory of Advanced Nuclear materials and Physics Beihang UniversityBeijing 102206China Peng Huanwu Collaborative Center for Research and Education Beihang UniversityBeijing 100191China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Physics University of MarylandCollege ParkMaryland 20742USA State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Physics Peking UniversityBeijing 100871Ch

The proton-proton(pp)fusion chain dominates the neutrino production in the *** uncertainty of the predicted pp neutrino flux is at the sub-percent level,whereas that of the best measurement is O(10%).In this study,for the first time,we measure solar pp neutrinos in the electron recoil energy range from 24 to 144 keV using the PandaX-4T commissioning data with 0.63 tonne×year *** pp neutrino flux is determined as(8.0±3.9(stat)±10.0(syst))×1010 s^(-1)cm^(-2),which is consistent with the Standard Solar Model and existing measurements,corresponding to an upper flux limit of 23.3×10^(10)s^(-1)cm^(-2)at 90%C.L..

关键词： solar pp neutrino flux PandaX-4T electron recoil spectrum

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蜂蜡添加量对鱼油凝胶宏观性质及微观结构的影响

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中国食品学报 2024年第4期24卷 90-98页

作者：刘书成马健康王蔚雯潘燕墨程开兴韩宗元广东海洋大学食品科技学院、广东省水产品加工与安全重点实验室、广东省海洋生物制品工程重点实验室、广东省海洋食品工程技术研发中心、广东省水产预制食品加工与品质控制工程技术研究中心广东湛江524088 大连工业大学、海洋食品精深加工关键技术省部共建协同创新中心辽宁大连116034

鱼油富含高营养价值的ω-3型多不饱和脂肪酸,由于其容易氧化,因此不利于产品的生产和加工。油凝胶具有良好的氧化稳定性、保油性、低脂肪的特点,既满足了降低动物脂肪的需求,又提高了产品品质和营养价值,是高营养、低热量的脂肪替代物... 详细信息

鱼油富含高营养价值的ω-3型多不饱和脂肪酸,由于其容易氧化,因此不利于产品的生产和加工。油凝胶具有良好的氧化稳定性、保油性、低脂肪的特点,既满足了降低动物脂肪的需求,又提高了产品品质和营养价值,是高营养、低热量的脂肪替代物。以蜂蜡为凝胶剂,沙丁鱼油作为基础油料制备油凝胶,分析蜂蜡添加量对沙丁鱼鱼油凝胶的外观形态、保油率、质构特性、流变性质及微观结构的影响。结果表明:蜂蜡基鱼油凝胶为β′晶型,添加蜂蜡促使晶体结构的形成,也提高了蜂蜡基鱼油凝胶的保油率、硬度、凝胶强度,且蜂蜡添加量为8%及以上时保油率达到99%。G′不随频率的变化而发生改变,说明蜂蜡基鱼油凝胶是一种强凝胶,静态流变学图像显示该凝胶出现剪切稀化现象。蜂蜡添加量在6%~10%时,蜂蜡基鱼油凝胶与猪油的质构特性与流变行为相似,研究结果为鱼油凝胶替代猪油提供了理论支持。

关键词：油凝胶蜂蜡沙丁鱼油保油率凝胶强度晶体结构

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Calcium/calcimimetic via calcium-sensing receptor ameliorates cholera toxin-induced secretory diarrhea in mice

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World Journal of Gastroenterology 2024年第3期30卷 268-279页

作者： Lie-Qi Tang Johnathan Fraebel Shi jin Steven P Winesett Jane Harrell Wen-han Chang Sam Xianjun cheng Department of Pediatrics University of FloridaGainesvilleFL 32610United States College of Medicine University of FloridaGainesvilleFL 32610United States Applied Physiology and Kinesiology University of FloridaGainesvilleFL 32610United States Brain Rehabilitation Research Center Malcom Randall VA Medical CenterGainesvilleFL 32610United States Department of Medicine Endocrine Research UnitVeterans Affairs Medical CenterUniversity of CaliforniaSan FranciscoSan FranciscoCA 94121United States Department of Pediatric Gastroenterology Hepatologyand NutritionUniversity of Florida Shands Children’s HospitalGainesvilleFL 32608United States

BACKGROUND Enterotoxins produce diarrhea through direct epithelial action and indirectly by activating the enteric nervous ***-sensing receptor(CaSR)inhibits both *** latter has been well documented in vitro but not in *** hypothesis to be tested was that activating CaSR inhibits diarrhea in *** To determine whether CaSR agonists ameliorate secretory diarrhea evoked by cholera toxin(CTX)in *** CTX was given orally to C57BL/6 mice to induce *** and calci-mimetic R568 were used to activate *** maximize their local intestinal actions,calcium was administered luminally via oral rehydration solution(ORS),whereas R568 was applied serosally using an intraperitoneal *** verify that their actions resulted from the intestine,effects were also examined on Cre-lox intestine-specific CaSR *** outcome was measured biochemically by monitoring changes in fecal Cl-or clinically by assessing stool consistency and weight *** CTX induced secretory diarrhea,as evidenced by increases in fecal Cl-,stool consistency,and weight loss following CTX exposure,but did not alter CaSR,neither in content nor in ***,calcium and R568 were each able to ameliorate diarrhea when applied to diseased *** CaSR involvement is suggested by gene knockout experiments where the anti-diarrheal actions of R568 were lost in intestinal epithelial CaSR knockouts(villinCre/Casrflox/flox)and neuronal CaSR knockouts(nestinCre/Casrflox/flox).CONCLUSION Treatment of acute secretory diarrheas remains a global *** advances in diarrhea research,few have been made in the realm of diarrhea *** therapy has remained the standard of care,although it does not halt the losses of intestinal fluid and ions caused by *** is no cost-effective therapeutic for *** and other studies suggest that adding calcium to ORS or using calcimimetics to activate intestinal CaSR might

关键词： Cholera Enteric nervous system Secretory diarrhea Oral rehydration solution Calcium-sensing receptor Gene knockout

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基于双重介质渗流-应力耦合模型的高压压水试验渗透参数反演

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长江科学院院报 2024年第8期41卷 113-119,156页

作者：王锦国韩智颖程伟黄瑞瑞尤琳杨蕴河海大学地球科学与工程学院南京211100 中国电建集团昆明勘测设计研究院有限公司昆明650051

高压压水试验过程中岩体易发生水力劈裂产生裂隙,岩体内部孔隙、裂隙双重导水,渗流场和应力场相互作用,导致岩体渗透参数的时空变异性。基于高压压水试验反演渗透参数需考虑双重介质渗流-应力耦合作用下产生裂隙前后渗透系数的变化规律... 详细信息

高压压水试验过程中岩体易发生水力劈裂产生裂隙,岩体内部孔隙、裂隙双重导水,渗流场和应力场相互作用,导致岩体渗透参数的时空变异性。基于高压压水试验反演渗透参数需考虑双重介质渗流-应力耦合作用下产生裂隙前后渗透系数的变化规律,利用渗流-应力耦合数值模型结合工程现场高压压水试验数据进行参数反演,计算得到不同压力阶段下灰岩岩体渗透率。主要结论如下:发生水力劈裂前,随着注液压力的增大,渗透率及孔隙水压力在不同压力阶段之间分界明显,渗透率反演值与规程公式计算值相近;发生水力劈裂后,岩体渗透率增大约2倍,孔隙介质渗透率和通过的流量出现陡减现象。

关键词：高压压水试验双重介质渗流-应力耦合渗透率水力劈裂

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基于覆盖控制的多机动目标合围拦截制导方法

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飞行力学 2024年第5期42卷 64-71页

作者：王翰姜吉祥程林梁海朝北京航空航天大学宇航学院北京100191 复杂系统控制与智能协同技术重点实验室北京100074 中山大学航空航天学院广东深圳518107

针对多飞行器攻防对抗末段的多目标协同拦截问题进行研究。考虑多个拦截器对多个机动飞行器进行拦截,根据拦截器和飞行器的相对运动方程建立拦截概率模型及可达域覆盖模型,并基于多智能体覆盖控制理论提出一种飞行器多对多协同合围拦截... 详细信息

针对多飞行器攻防对抗末段的多目标协同拦截问题进行研究。考虑多个拦截器对多个机动飞行器进行拦截,根据拦截器和飞行器的相对运动方程建立拦截概率模型及可达域覆盖模型,并基于多智能体覆盖控制理论提出一种飞行器多对多协同合围拦截制导方法。该合围制导方法通过维诺分割原则实现多机动目标拦截的目标分配与协同制导一体化设计,有效解决多目标拦截中的目标动态分配问题,提升了对于多个具有较强逃逸机动能力目标的协同拦截精度。仿真结果表明,所提方法在多目标逃逸机动时具有更加优异的拦截能力,能够实现对多个机动飞行器的动态合围协同拦截。

关键词：多目标拦截协同拦截覆盖控制合围制导机动目标

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中国、欧洲、美国药典中天然药物质量控制技术比较

引用

中国新药杂志 2024年第4期33卷 313-322页

作者：王赵李海亮金红宇马双成中国食品药品检定研究院北京102629

通过系统分析《中华人民共和国药典》、《美国药典/国家处方集》和《欧洲药典》对天然药物的质量控制标准,发现基于对照提取物全成分检测的整体质量控制理念仍是目前最有效的天然药物质量控制方法。本文旨在秉持兼容并蓄、博采众长的原... 详细信息

通过系统分析《中华人民共和国药典》、《美国药典/国家处方集》和《欧洲药典》对天然药物的质量控制标准,发现基于对照提取物全成分检测的整体质量控制理念仍是目前最有效的天然药物质量控制方法。本文旨在秉持兼容并蓄、博采众长的原则,分析上述国际通行的药典标准和规范中值得借鉴的经验和关键技术,提出科学建议,力求将各个国家和地区目前最科学合理的标准纳入到天然药物的整体质量控制,为创建和完善现代化、国际化的天然药物质量控制标准提供理论参考。

关键词：天然药物整体质量控制对照提取物《中华人民共和国药典》《欧洲药典》《美国药典/国家处方集》

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