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Identifying the geographical origin and processing technology of Moyao(Myrrh)on the basis of near-infrared spectroscopy combined with chemometrics

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Journal of Traditional Chinese Medicine 2024年第3期44卷 505-514页

作者： XU Ningning YAN Ganming XU Fengjie DENG Linfeng qiao xinjiang LU Changzheng CHENG Shaomin TCM Diagnosis Institute College of Traditional Chinese MedicineJiangxi University of Chinese MedicineNanchang 330004China TCM Processing Institute Pharmaceutical CollegeJiangxi University of Chinese medicineNanchang 330004China School of Electronic Information and Artificial Intelligence Shaanxi University of Science and TechnologyXi'an 710021China Jiangzhong Pharmaceutical Co. Ltd.Nanchang 330096China Jiangxi Guhan Refined Chinese Herbal Pieces Co. Ltd.Nanchang330041.China

OBJECTIVE:To evaluate the quality of Moyao(Myrrh)in the identification of the geographical origin and processing of the ***:Raw Moyao(Myrrh)and two kinds of Moyao(Myrrh)processed with vinegar from three countries were identified using near-infrared(NIR)spectroscopy combined with chemometric *** component analysis(PCA)was used to reduce the dimensionality of the data and visualize the clustering of samples from different categories.A classical chemometric algorithm(PLS-DA)and two machine learning algorithms[K-nearest neighbor(KNN)and support vector machine]were used to conduct a classification analysis of the near-infrared spectra of the Moyao(Myrrh)samples,and their discriminative performance was ***:Based on the accuracy,precision,recall rate,and F1 value in each model,the results showed that the classical chemometric algorithm and the machine learning algorithm obtained positive *** all of the chemometric analyses,the NIR spectrum of Moyao(Myrrh)preprocessed by standard normal variation or Multivariate scattering correction combined with KNN achieved the highest accuracy in identifying the geographical origins,and the accuracy of identifying the processing technology established by the KNN method after first-order derivative pretreatment was the *** best accuracy of geographical origin discrimination and processing technology discrimination were 0.9853 and 0.9706 ***:NIR spectroscopy combined with chemometric technology can be an important tool for tracking the origin and processing technology of Moyao(Myrrh)and can also provide a reference for evaluations of its quality and the clinical use.

关键词： Moyao(Myrrh) near-infrared spectroscopy geographical origin processing technology

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国道217线天山公路沿河路基水毁防护优化工程——以K970+564～K970+839段为例

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山地学报 2010年第6期28卷 747-752页

作者：乔国文新疆公路规划勘察设计研究院

国道217线独山子-库车段亦称天山公路,是横贯天山,连接新疆维吾尔自治区南、北疆的一条重要交通干线,全长537km。天山公路的很多路段沿河布设,由于原有公路的防护工程标准较低,很多路段的路基已经被山洪完全损毁,造成交通中断。研究合... 详细信息

国道217线独山子-库车段亦称天山公路,是横贯天山,连接新疆维吾尔自治区南、北疆的一条重要交通干线,全长537km。天山公路的很多路段沿河布设,由于原有公路的防护工程标准较低,很多路段的路基已经被山洪完全损毁,造成交通中断。研究合理的沿河路基水毁防护技术,已经成为改建后公路能否正常运营的必要条件。以K970+564～K970+839段为例,总结该段公路路基水毁现状,提出了防护工程优化组合的方案及适用条件,提出了典型水毁的防治对策和防治方案,为有效、合理、科学的保护天山公路沿河路基提供了科学依据。

关键词：天山公路路基水毁防治

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头孢菌素类药物严重不良反应回顾性分析

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中国现代医生 2012年第14期50卷 117-118页

作者：乔新江江苏省新沂市人民医院药剂科江苏新沂221400

目的对头孢菌素类药物严重不良反应进行回顾性分析以减少严重不良反应的发生。方法选取因头孢菌素类药物产生严重不良反应的68例,对其发生的情况及临床特点进行回顾性分析。结果15个品种的头孢菌素类药物发生频率最高,其中不良反应发生... 详细信息

目的对头孢菌素类药物严重不良反应进行回顾性分析以减少严重不良反应的发生。方法选取因头孢菌素类药物产生严重不良反应的68例,对其发生的情况及临床特点进行回顾性分析。结果15个品种的头孢菌素类药物发生频率最高,其中不良反应发生率最高的是注射用头孢替唑钠,发生率为9.1%;其次为头孢哌酮/舒巴坦纳,发生率为2.5%,对患者产生严重不良反应,引起近10个系统发生不良反应。其中较常见的不良反应为变态反应、过敏性休克、双硫仑样反应,发生率为55.00%;其次为呼吸困难,发生率为14.16%。结论头孢菌素类药物使用时,应详细地了解该药物引起不良反应的临床特点,以避免严重不良反应的发生。

关键词：头孢菌素类药物不良反应

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新构造运动对北塔山地区地貌形成演化的作用

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干旱区地理 1988年第2期 21-26页

作者：乔木中国科学院新疆地理研究所

从论述北塔山地区的地形及地质基础入手,分析新构造运动时该区地貌发展和形成的作用及新构造运动应力场,得出新构造运动是由北向南减弱,具有明显的继承性,对地貌形成和发展起了决定性作用。

关键词：地质基础新构造运动应力场

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Review of Three-phase Soft Switching Inverters and Challenges for Motor Drives

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CES Transactions on Electrical Machines and Systems 2024年第2期8卷 177-190页

作者： Haifeng Lu qiao Wang Jianyun Chai Yongdong Li IEEE the Department of Electrical Engineering Tsinghua UniversityBeijing 100084China the School of Electrical Engineering Xinjiang UniversityUrumqi 830047China

For electric vehicles (EVs),it is necessary to improve endurance mileage by improving the *** exists a trend towards increasing the system voltage and switching frequency,contributing to improve charging speed and power ***,this trend poses significant challenges for high-voltage and high-frequency motor controllers,which are plagued by increased switching losses and pronounced switching oscillations as consequences of hard *** deployment of soft switching technology presents a viable solution to mitigate these *** paper reviews the applications of soft switching technologies for three-phase inverters and classifies them based on distinct *** each type of inverter,the advantages and disadvantages are ***,the paper introduces the research progress and control methods of soft switching inverters (SSIs).Moreover,it presents a comparative analysis among the conventional hard switching inverters (HSIs),an active clamping resonant DC link inverter (ACRDCLI) and an auxiliary resonant commuted pole inverter (ARCPI).Finally,the problems and prospects of soft switching technology applied to motor controllers for EVs are put forward.

关键词： Soft switching inverters Zero-voltage switching Electric vehicles Motor drives

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Surface pollen and modern vegetation in Southern xinjiang,China

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Science China Earth Sciences 2024年第2期67卷 510-530页

作者： Yun ZHANG Lixin CHEN Yaoyao XI Zhaochen KONG Xianguo qiao State Key Laboratory of Black Soils Conservation and Utilization Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun130102China Institute of Botany Chinese Academy of SciencesBeijing100093China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China University of Chinese Academy of Sciences Beijing100049China School of Geosciences and Resources China University of Geosciences(Beijing)Beijing100083China

The study of modern pollen,and vegetation can improve the accuracy of paleoenvironmental reconstruction based on fossil pollen data.A total of 188 pollen surface samples were collected from Southern xinjiang(34°00’–43°00’N,74°00’–94°00’E)in China,with an elevation range of 888–4530 *** pollen and vegetation were studied in the northern region of the Kunlun Mountains and the southern region of the Tianshan *** results showed that the surface pollen assemblages on the southern slope of the Tianshan Mountains(3530–1124 m)were divided into three pollen zones,namely,montane steppe,montane desert steppe,and montane *** zones were dominated by Artemisia,Chenopodiaceae,and Ephedra *** surface pollen assemblages in the eastern Pamir Plateau(4530–1287 m)could be divided into alpine meadow,montane desert steppe,and montane desert zones,which were predominantly characterized by Artemisia,Chenopodiaceae,and Asteraceae ***,the Southern Tarim Basin(3548–888 m)comprised montane desert steppe and montane desert zones,which was dominated by Artemisia and Chenopodiaceae *** geographic distribution of the surface pollen sites obtained using ArcGIS,the R-value,and Pearson correlation analyses indicated that the over-represented Picea and Pinus pollen were of external origin and were transported by wind,water(rivers),and ice(glacier movement).Over-representation of Ephedra and Nitraria pollen was mainly distributed in the montane desert and desert steppe zones,*** from Chenopodiaceae and Artemisia were over-represented and broadly distributed across Southern *** pollen was concentrated in areas with walnut trees,strongly indicating the presence of local parent *** to the Hybrid Singleparticle Lagrangian Integrated Trajectory model,more Pinus pollen was transported to the Pamir region by external airflows during spring and summer,resulting in its higher surface pollen *** elucidating t

关键词： Surface pollen Vegetation Distribution Picea Southern xinjiang

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Nano-silica modified lightweight and high-toughness carbon fiber/phenolic ablator with excellent thermal insulation and ablation performance

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Defence Technology（防务技术） 2024年第1期31卷 192-199页

作者： Wenjie Xu Wenda Song Xianfeng Jia Cheng Ma Jitong Wang Wenming qiao Licheng Ling State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai 200237China School of Chemical Engineering and Materials Changzhou Institute of TechnologyChangzhou 213032China Key Laboratory of Specially Functional Polymeric Materials and Related Technology(Ministry of Education) School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China

Lightweight and high-toughness carbon fiber/phenolic ablator(CFPA)is required as the Thermal Protection System(TPS)material of aerospace vehicles for next-generation space *** improve the ablative properties,silica sol with good particle size distribution prepared using tetramethoxysilane(TMOS)was blended with natural rubber latex and deposited onto carbon fiber felt,which was then integrated with phenolic aerogel matrix,introducing nano-silica into the framework of *** modified CFPA with a low density of 0.28—0.31 g/cm3exhibits strain-in-fracture as high as 31.2%and thermal conductivity as low as 0.054 W/(m·K).Furthermore,a trace amount of nano-silica could effectively protect CFPA from erosion of oxidizing atmosphere in different high-temperature *** oxyacetylene ablation test of 3000°C for 20 s shows a mass ablation rate of 0.0225 g/s,a linear ablation rate of 0.209 mm/s for the modified CFPA,which are 9.64%and 24.82%lower than the unmodified ***,the long-time butane ablation test of 1200°C for 200 s shows an insignificant recession with mass and linear ablation rate of 0.079 g/s and 0.039 mm/s,16.84%and 13.33%lower than the unmodified ***,the fixed thermocouple in the test also demonstrates a good thermal insulation performance with a low peak back-face temperature of 207.7°C,12.25%lower than the unmodified ***,the nano-silica modified CFPA with excellent overall performance presents promising prospects in high-temperature aerospace applications.

关键词： Nano-silica Carbonfiber Phenolic aerogel Insulation Ablation

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娇笔石科的新材料

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古生物学报 1962年第1期 1-11页

作者：穆恩之乔新东中国科学院地质古生物研究所新疆维吾尔自治区地质局

最近笔者等整理浙江的笔石标本时,发现一些娇笔石科的笔石,这些笔石经鉴定有下列四种:1.中国双线笔石Dinemagraptus sinicus Mu et qiao(新种)2.美丽娇笔石Abr(?)graptus f(?)rmosus Mu3.三枝拟娇笔石Parabrograptus tribrachiatus Mu et qiao(新属、新种)4.分枝江山笔石Jiangshanites ramosus Mu et qiao(新属、新种)这些笔石标本大部分是卢衍豪、穆恩之、侯祐堂、张日东、刘第墉等在浙江江山黄泥岗附近的中奥陶统胡乐页岩组中所采得的;小部分是葛梅钰、景延祥、张德明等在浙江龙游志棠附近的胡乐页岩组中采得的。娇笔石科系笔者之一(穆恩之)于1958年创立的。这一科的特征是,两枝的无轴笔石,除了胎管以外,其体壁均已退化,形成网线结构。在创立该科时包括两个属,即双

关键词：笔石新材料标本体壁穆恩之中枝外骨骼笔石体胎管

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Effect of Forest Litter on the Regeneration of Larix sibirica: Insight from Aqueous Extract and Litter Coverage

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Journal of Geoscience and Environment Protection 2024年第2期12卷 57-70页

作者： Shanchao Zhao qiao Xu Nature Forest Protection Center of xinjiang Uygur Autonomous Region Urumqi China College of Grassland Science Xinjiang Agricultural University Urumqi China

The effect of litter on forest regeneration depends on the characteristics of regional climate and also shows community specificity. The influences of plant litter on seed germination and seedling growth of Larch Siberian forest in the Altai Mountains were investigated through two simulated experiments including litter coverage and litter aqueous extracts. In the litter coverage experiment, three litter coverage methods including above (D), below (S) and in the middle (Z) of litter were set with the litter coverage thickness of 0, 1, 2, and 4 cm, while two aqueous extract obtained methods using the air-dried litter and litter ash after fir were used with the concentration of 10%, 40%, 80% and 100% in the present study. Results showed that: the aqueous extracts obtained using the air-dried litter restrained the seed germination, while the aqueous extracts obtained using litter ash improved the seed germination. Compared with other litter concentration, the influences of 100% concentration reach highest. The seed germination rate, seed germination potential and vital index under the treatment of seeds above the litter coverage were highest, which were significantly higher than other treatments. The above-ground biomass was significantly higher and the inhibition index of below-ground bio-mass was significantly lower under the treatment of seed above the litter with thin litter cover-age (S1) compared to other litter coverage treatments. These results indicated that the litter aqueous extract and the litter coverage had a combined effect on the seed germination and seedling growth of Siberian larch forest. Fire disturbance could promote seed germination by modifying the adverse effects of litter aqueous extracts and litter coverage, and thus plays an important role in the regeneration of Siberian larch in the Altai Mountains.

关键词： Litter Physical Barrier Fire Burning Seed Germination Northwest China

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精益创业:大学生创业的低风险路径

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时代经贸 2020年第25期18卷 90-91页

作者：蔡媛媛杜清张高传乔信江江西中医药大学江西南昌330004

我国大学生创业成功率普遍偏低,初创企业三年内夭折过半,一般总结的原因主要有:缺少资金、缺乏企业管理经验、市场推广困难,其中认为“缺少资金”是最主要的。但是笔者认为创业更需要正确的方法,文章指出,利用精益创业的思想指导大学生... 详细信息

我国大学生创业成功率普遍偏低,初创企业三年内夭折过半,一般总结的原因主要有:缺少资金、缺乏企业管理经验、市场推广困难,其中认为“缺少资金”是最主要的。但是笔者认为创业更需要正确的方法,文章指出,利用精益创业的思想指导大学生创业,将会是高校创业教育深入实际的最好方式之一。

关键词：大学生创业精益创业

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