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Acidity and conductivity of Pinus massoniana bark as indicators to atmospheric acid deposition in Guangdong, China

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Journal of Environmental Sciences 2006年第5期18卷 916-920页

作者： KUANG Yuan-wen ZHOU guo-yi WEN Da-zhi LIU Shi-zhong Institute of Ecology South China Botanical Garden＇ Chinese Academy of Sciences Guangzhou 510650 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China

Barks of Pinus massoniana collected from two polluted sites, Qujiang and Xiqiaoshan, and from the relatively clean site Dinghushan were used to evaluate the pollution indication by the determination of their acidity and conductivity. The acidity of the inner and outer barks from the polluted sites was significantly higher than those from the clean site, suggesting that the acidity of the bark occurred in concurrent with the air pollution. The significant lower pH values of the outer bark than the inner bark collected from all sites indicated that the outer bark was more sensitive than the inner bark in response to acid pollution, implying that the outer bark is more preferable when used as indication of atmospheric acid pollution. The conductivities of the inner barks differed significantly among the three sites, with higher values at the clean site. However, the significant differences were not observed among these sites. Furthermore, the pH values for the inner and outer barks were not correlated with the conductivity, which did not coincide with some other studies.

关键词： acidity conductivity inner bark outer bark Pinus massoniana

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菌草穴盘苗取投苗装置设计与试验分析

中国农机化学报 2024年第10期45卷 9-16,53页

作者：叶大鹏青家兴吴逸腾赖鸿康翁海勇李庆福建农林大学机电工程学院福州市350100 福建省农业信息感知技术重点实验室福州市350100

目前菌草穴盘苗移栽过程中缺乏自动取投苗装置,通过分析取投苗装置的工作原理,建立运动学模型并优化结构参数,研发一种六杆式取投苗装置。根据菌草穴盘苗钵体的抗压力学特性、取投苗装置的基本约束与空间约束,优化分析得到各杆件的结构... 详细信息

目前菌草穴盘苗移栽过程中缺乏自动取投苗装置,通过分析取投苗装置的工作原理,建立运动学模型并优化结构参数,研发一种六杆式取投苗装置。根据菌草穴盘苗钵体的抗压力学特性、取投苗装置的基本约束与空间约束,优化分析得到各杆件的结构参数,建立虚拟样机得到仿真轨迹和运动学参数。进一步研制样机,结合高速摄像技术获取取投苗装置的实际运动轨迹,对比两种轨迹的一致程度,验证装置设计的合理性。以取投“绿洲一号”菌草穴盘苗为例,将主动杆转速、送苗装置倾斜角以及钵体含水率作为试验因素,取苗成功率、投苗成功率作为响应指标,开展三因素三水平正交试验。试验结果表明,在主动杆转速为30 r/min、钵体含水率为60%、送苗装置倾斜角为50°时,取投苗的效果最优。重复试验表明,在最优因素水平下,取苗成功率与投苗成功率分别为95.31%和93.4%。

关键词：菌草穴盘苗取投苗装置六杆装置自动化移栽设备

Seasonal occurrence of Aphis glycines and physiological responses of soybean plants to its feeding

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Insect Science 2014年第3期21卷 342-351页

作者： Xing-Ya Wang Li-Hong Zhou Biao Xu Xing Xing guo-qing Xu Accepted February 10 2014 Institute of Flower Research Liaoning Academy of Agricultural Sciences Shenyang Agricultural Technology Extension Center of Xiuyan Manchu Autonomous County Anshan Liaoning China

The soybean aphid Aphis glycines Matsumura （Hemiptera： Aphididae） is an important pest of soybean in China. To monitor and manage this pest effectively it is neces-sary to understand its population dynamics and demographics, as well as the physiological responses of soybean plants to its feeding. In this study, using field surveying and suction-trap monitoring, we investigated the population dynamics of the soybean aphid in Xiuyan County, Liaoning Province in northeastern China during 2009-2012. The results indicatedthat the population dynamics of the soybean aphid followed a unimodal curve distribution, with the insect generally colonizing soybean fields from the middle of June to early Julyand the population reaching a peak between early July and early August. On the whole, soybean aphids occurred in suction-traps at least 2 weeks earlier than they were foundin field surveys. A total of 72 alates were collected by suction-trapping over the 4 years, with the earliest alate captures occurring on 28 May in 2009, 2011, 2012 and 4 June in 2010. The life table parameters clearly showed that this aphid had a short doubling time （4.73 ± 0.21 days）, and 7.36± 0.98 nymphs were produced by a soybean aphid adult during its lifetime （13.57 ± 0.30 days）. Finally, biochemical assays indicated that the amount of malondialdehyde and the activities of four defense-related enzymes in soybean leavessignificantly changed between 0 day and 7 days of aphid infestation. Polyphenol oxidase （PPO） and catalase （CAT） activities increased more dramatically after 1 day of aphid feed-ing. In addition, significantly higher levels of superoxide dismutase and CAT were found after aphid feeding for 7 days, whereas there was no significant change in the activitiesof peroxidase and PPO. Consequently, this study will be beneficial in determining the seasonal occurrence of the soybean aphid and selecting insect-resistant soybean varieties,and thus in developing a theoretical framework for appropriate m

关键词： Aphis glycines defense-related enzymes life table population dynamics suction trap

Congenital fiber-type disproportion presenting with type II respiratory failure after delivery:A case report

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World Journal of Clinical Cases 2021年第7期9卷 1748-1754页

作者： Hong-Mei Yang Jian-Xing guo yi-Min Yang Department of Intensive Care Unit The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

BACKGROUND Congenital fiber-type disproportion(CFTD)is a form of congenital *** is rare,especially when presenting in patients with critical ***,we report a case of CFTD presenting with type II respiratory failure after delivery and provide a review of the literature on *** SUMMARY A 30-year-old woman was admitted to the obstetrics department of our hospital with premature rupture of the fetal membrane and with 7 h of regular *** delivery,the patient experienced a refractory type II respiratory *** examination along with diagnostic procedures such as electromyography and biopsy confirmed *** of invasive ventilator followed by intermittent use of noninvasive ventilator attenuated her *** patient recovered after ventilator-assisted respiration and was weaned off the noninvasive ventilator on the seventh day *** Congenital myopathy should be considered a differential diagnosis for type II respiratory failures that cannot be attributed to other diseases.

关键词： Congenital fiber-type disproportion Congenital myopathy Type II respiratory failure Delivery Systematic review Case report

耕作方式导致的土壤肥力差异影响玉米籽粒营养物质积累

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植物营养与肥料学报 2024年第9期30卷 1705-1717页

作者：王利青刘洪月于晓芳高聚林马达灵郭怀怀内蒙古农业大学农学院内蒙古呼和浩特010019 内蒙古自治区作物栽培与遗传改良重点实验室内蒙古呼和浩特010019

【目的】针对土壤肥力对玉米灌浆期籽粒营养品质组分调控规律不明确的问题,研究玉米籽粒营养物质积累、产量及其对土壤肥力水平的响应,旨在为玉米高产高效绿色栽培提供理论依据。【方法】基于始于2018年的耕作方式定位试验(共9个处理,2... 详细信息

【目的】针对土壤肥力对玉米灌浆期籽粒营养品质组分调控规律不明确的问题,研究玉米籽粒营养物质积累、产量及其对土壤肥力水平的响应,旨在为玉米高产高效绿色栽培提供理论依据。【方法】基于始于2018年的耕作方式定位试验(共9个处理,27个小区),于2020—2021年采样分析了不同耕作方式处理的土壤养分含量,计算了肥力综合值,将所有处理下的小区土壤进行高、中、低聚类。在玉米吐丝后20、40、60天(生理成熟期),采样分析籽粒中的总淀粉、粗蛋白、粗脂肪含量,成熟期调查了玉米产量、产量构成因素,研究不同土壤肥力水平对吐丝后(即籽粒灌浆过程中)玉米籽粒的营养品质组分和产量的影响。【结果】深松秸秆粉碎全量混拌还田和深翻秸秆粉碎全量还田两种耕作方式的土壤两年均处于高肥力水平。2020年,土壤低肥力水平的耕作方式包括免耕、推茬清垄条深旋、浅旋,土壤中肥力水平的耕作方式包括深松、深翻、免耕秸秆粉碎全量覆盖还田、推茬清垄条深旋秸秆还田。2021年,土壤低肥力水平的耕作方式仅为浅旋耕作,其余耕作方式为土壤中肥力水平。各土壤肥力水平间籽粒粗蛋白和粗脂肪含量的变幅在花后40~60天差异最大,总淀粉含量的变幅在花后20天差异最大,可溶性总糖含量的变幅在花后20~40天差异最大。与低土壤肥力相比,高土壤肥力下两年花后40天至60天的籽粒粗蛋白含量的降幅分别显著增加29.85%~34.64%,籽粒粗脂肪的增量显著降低28.07%~54.01%,花后20天的籽粒总淀粉含量显著增加5.98%~8.95%,花后20天至40天的籽粒可溶性总糖含量的降幅显著增加14.63%~25.34%。土壤肥力的提升可显著改变生理成熟期玉米籽粒的营养物质含量。与低土壤肥力相比,高土壤肥力下生理成熟期的籽粒总淀粉含量增加1.44%~2.43%,籽粒粗脂肪含量增加3.81%~4.10%,籽粒可溶性总糖含量降低12.48%~18.55%,百粒重显著增加1.87%~2.97%。提高土壤肥力通过影响百粒重显著增加玉米产量,与低土壤肥力相比,高土壤肥力下的产量增加6.55%~9.39%。【结论】适宜的耕作方式可以明显提高土壤肥力,且以深松秸秆粉碎全量混拌还田和深翻秸秆粉碎全量还田的效果最佳。土壤肥力的提高可影响玉米籽粒灌浆阶段内各营养物质的积累与转化,进而调控生理成熟期的各营养品质组分的含量。对比低土壤肥力,高土壤肥力通过影响玉米灌浆期籽粒总淀粉和粗脂肪的积累,进而增加生理成熟期籽粒粗脂肪和总淀粉含量,同时显著提高玉米百粒重和产量。

关键词：土壤肥力玉米产量籽粒营养品质

Thin Layer Identification of Jiedu Shengxue Granules and Determination of Notoginsenoside R1 Content

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Medicinal Plant 2024年第1期15卷 71-74页

作者： Zhenying FU Bing qing yinghong HUANG Xianyi SHI Meiyan QIU Xian PENG Jiangcun WEI Fengzhen LI Wen ZHONG Guangxi International Zhuang Medical Hospital Nanning 530201China

[Objectives]To establish the quality standard of hospital preparation Jiedu Shengxue granules.[Methods]Scleromitrion diffusum and Prunella vulgaris in Jiedu Shengxue granules were qualitatively identified by thin layer chromatography(TLC).A high performance liquid chromatography(HPLC)was established to determine the content of notoginsenoside R1 in the granule.[Results]The traditional Chinese medicinal materials in Jiedu Shengxue granules could be identified by TLC,and the characteristic spots were stable and *** R1 had a good linear relationship in the range of 10.45-104.5μg/mL,with an average recovery of 98.52%and RSD=2.36%.[Conclusions]TLC and HPLC,as the quality control methods of Jiedu Shengxue granules,have high accuracy and good repeatability,which lays a foundation for the quality control of this mixture.

关键词： Jiedu Shengxue granules Thin layer identification Notoginsenoside R1 Quality standard

Slope excavation quality assessment and excavated volume calculation in hydraulic projects based on laser scanning technology

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Water Science and Engineering 2015年第2期8卷 164-173页

作者： Chao Hu yi-hong Zhou Chun-ju Zhao Zhi-guo Pan School of Water Resources and Hydropower Engineering Wuhan University College of Hydraulic and Environmental Engineering China Three Gorges University Collaborative Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area

Slope excavation is one of the most crucial steps in the construction of a hydraulic project. Excavation project quality assessment and excavated volume calculation are critical in construction management. The positioning of excavation projects using traditional instruments is inefficient and may cause error. To improve the efficiency and precision of calculation and assessment, three-dimensional laser scanning technology was used for slope excavation quality assessment. An efficient data acquisition, processing, and management workflow was presented in this study. Based on the quality control indices, including the average gradient, slope toe elevation, and overbreak and underbreak,cross-sectional quality assessment and holistic quality assessment methods were proposed to assess the slope excavation quality with laserscanned data. An algorithm was also presented to calculate the excavated volume with laser-scanned data. A field application and a laboratory experiment were carried out to verify the feasibility of these methods for excavation quality assessment and excavated volume calculation. The results show that the quality assessment indices can be obtained rapidly and accurately with design parameters and scanned data, and the results of holistic quality assessment are consistent with those of cross-sectional quality assessment. In addition, the time consumption in excavation quality assessment with the laser scanning technology can be reduced by 70%e90%, as compared with the traditional method. The excavated volume calculated with the scanned data only slightly differs from measured data, demonstrating the applicability of the excavated volume calculation method presented in this study.

关键词： Slope excavation Quality assessment Volume calculation Three-dimensional laser scanning technology

Rapid and Sensitive Assay of the Main Components in Shuanghuanglian Preparations by UPLC-TOF-MS

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Chemical Research in Chinese Universities 2009年第1期25卷 122-124页

作者： SU Qiang LIU qing-fei WANG Yong BI Kai-shun LUO guo-an School of Pharmacy Shenyang Pharmaceutical University Shenyang 110016 P R. China Institute of Biomedicine Tsinghua University Beijing 100084 P. R. China School of Pharmacy East China University of Science and Technology Shanghai 200237 P. R. China

1 Introduction As already known, complex prescription has been the outstanding feature of traditional Chinese medicine（TCM）. This fact therefore brings complicated formula with multicomponents from multimaterals, which produces some difficulties to detect the components and to control the quality. Shuanghuanglian preparations（SHLs）, including oral liquid, injection powder, capsule, and tablet, belong to a family of refined traditional Chinese patent medicine and a combined herbal remedy comprised of three herbs：

关键词： UPLC-TOF-MS Multicomponent assay Shuanghuanglian preparations TCM

Sister Mary Joseph’s nodule in endometrial carcinoma: A case report

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World Journal of Clinical Cases 2019年第20期7卷 3358-3363页

作者： Yang Li Peng guo Bin Wang yi-Tao Jia Third Department of Oncology Hebei General HospitalShijiazhuang 050051Hebei ProvinceChina North China University of Science and Technology Tangshan 063000Hebei ProvinceChina Department of Orthopedics The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina

BACKGROUND Sister Mary Joseph’s nodule(SMJN)is rare and may occur independently or simultaneously with malignant tumors in the abdominal *** has a poor *** carcinoma is the most common malignant tumor in the upper segment of the female reproductive tract;however,it rarely occurs with *** here report a case of endometrial carcinoma with *** SUMMARY A 75-year-old woman was diagnosed with endometrial cancer>2 years *** multiple cycles of chemotherapy,an obvious but painless umbilical mass was detected 2 wk before *** patient did not undergo surgical treatment but received chemotherapy,which was different from previous chemotherapy,for three consecutive cycles after discovery of umbilical ***,the umbilical metastatic tumor has reduced,and the quality of life of the patient has significantly *** Once the umbilical mass is found,the possibility of SMJN should be *** should also take into account the poor prognosis of endometrial carcinoma complicated with umbilical metastasis,especially in patients with advanced tumors,and it is important to choose an appropriate treatment.

关键词： Endometrial cancer Sister Mary Joseph’s nodule Umbilical metastasis Chemotherapy Surgery Case report