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Changes in groundwater levels and the response of natural vegetation to transfer of water to the lower reaches of the Tarim River

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Journal of Environmental Sciences 2007年第10期19卷 1199-1207页

作者： XU Hai-liang YE Mao LI ji-mei Xinfiang Institute of Ecology and Geography Research Chinese Academic of Science Urumqi 830011 China School of Geography Sciences and Touristy Xinfiang Normal University Urumqi 830054 China

Restoration and reconstruction of the degraded Tarim River ecosystem is an important challenge. A goal of an ecological water conveyance project is to protect and restore the natural vegetation in the lower reaches of Tadm River by transferring water from Bosten Lake, through the river channel, to the lower reaches. This study describes the changes in groundwater depth during the water transfer and the respondence of riparian vegetation to alterations in groundwater levels. The results indicate that groundwater depth along the Tarim River channel has a significant spatial-temporal component. Groundwater levels closest to the river channel show the most immediate and pronounced changes as a response to water transfer while those further away respond more slowly, although the observed change appears to be longer in duration. With a rise in the groundwater level, natural vegetation responded with higher growth rates, biomass and biodiversity. These favorable changes show that it is feasible to protect and restore the degraded natural vegetation by raising the groundwater depth. Plant communities are likely to reflect the hysteresis phenomenon, requiting higher water levels to initiate and stimulate desired growth than what may be needed to maintain the plant community. Because different species have different ecologies, including different root depths and densities and water needs, their response to increasing water availability will be spatially and temporally heterogenous. The response of vegetation is also influenced by microtopography and watering style. This paper discusses strategies for the protection and restoration of the degraded vegetation in the lower reaches of the Tarim River and provides information to complement ongoing theoretical research into ecological restoration in add or semi-arid ecosystems.

关键词： the lower reaches of Tarim River ecological watering conveyance groundwater depth ecological response natural vegetation

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Endoscopic polypectomy: A promising therapeutic choice for esophageal carcinosarcoma

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World Journal of Gastroenterology 2009年第27期15卷 3448-3450页

作者： Feng ji Yue-mei Xu Cheng-Fu Xu Department of Gastroenterology the First Affiliated Hospital College of Medicine Zhejiang University Hangzhou 310003 Zhejiang Province China

Esophageal carcinosarcoma is a rare malignant tumor composing of both carcinomatous and sarcomatous elements. Endoscopic therapy is less invasive and may represent an alternative to esophagectomy for superf icial esophageal carcinosarcoma. Here, we report a 61-year-old male who was diagnosed as esophageal carcinosarcoma and underwent endoscopic polypectomy with well tolerance and favorable prognosis. We also present a brief review of the literature.

关键词： Carcinosarcoma Endoscopic polypectomy Endoscopic ultrasonography

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Crouzon syndrome in a fraternal twin:A case report and review of the literature

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World Journal of Clinical Cases 2022年第16期10卷 5317-5323页

作者： Xiao-jing Li ji-mei Su Xiao-Wei Ye Department of Stomatology The Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052Zhejiang ProvinceChina

BACKGROUND Crouzon syndrome(CS;OMIM 123500)is an autosomal dominant inherited craniofacial disorder caused by mutations in the fibroblast growth factor receptor 2(FGFR2)*** is characterized by craniofacial dysostosis,exophthalmos,and facial anomalies with hypoplastic maxilla and relative mandibular *** SUMMARY Our report involves a 6-year-old fraternal twin boy with many caries in the oral cavity who presented with characteristic features of CS based on clinical and radiographic examinations along with Sanger *** fraternal girl did not show any abnormalities indicating *** teeth and poor oral hygiene were managed promptly through administering appropriate behavior guidance,orthodontic treatment was planned,and preventive procedures were *** CS could occur in a fraternal twin caused by a de novo mutation of the FGFR2 *** hygiene instruction,preventive programs on oral hygiene,orthodontic treatment,and maxillary osteotomy were required for treatment.

关键词： Crouzon syndrome Craniosynostosis Fibroblast growth factor receptor 2 Mutation Fraternal twin Case report

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Stereoselective Synthesis of N^1-Lyxitol Inosine Derivative

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Chinese Chemical Letters 2001年第7期12卷 575-578页

作者： Li Jun HUANG Yan PANG ji mei MIN Li He ZHANG National Research Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing 100083

1,4-anhydro-2-trifiyl-3,5-O-benzenylidene-L-xylitol (5) was constructed in six steps from protected D-xylose. Substitution of 5 with protected 8-bromoinosine 6 gave the key intermediate 5 ' -O-TBS-2 ' ,3 ' -di-O-acctyl-N-1-(2 ' -deoxy-1 ' ,4 ' -anhydro-3 ' ,5 ' -O-benzenylidene (14). Selective removal of 5 ' -O-TBS-group gave the corresponding though phosphorylation which was characterized by X-ray crystallographical analysis.

关键词： Cyclic ADP-ribose analogues synthesis X-ray crystallographic analysis

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Sampling Surface Particle Size Distributions and Stability Analysis of Deep Channel in the Pearl River Estuary

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China Ocean Engineering 2017年第3期31卷 299-307页

作者： FENG Hao-chuan ZHANG Wei ZHU Yu-liang LEI Zhi-yi ji Xiao-mei State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China College of Harbor Coastal and Offshore Engineering Hohai University Nanjing 210098 China

Particle size distributions （PSDs） of bottom sediments in a coastal zone are generally multimodal due to the complexity of the dynamic environment. In this paper, bottom sediments along the deep channel of the Pearl River Estuary （PRE） are used to understand the multimodal PSDs＇ characteristics and the corresponding depositional environment. The results of curve-fitting analysis indicate that the near-bottom sediments in the deep channel generally have a bimodal distribution with a fine component and a relatively coarse component. The particle size distribution of bimodal sediment samples can be expressed as the sum of two lognormal functions and the parameters for each component can be determined. At each station of the PRE, the fine component makes up less volume of the sediments and is relatively poorly sorted. The relatively coarse component, which is the major component of the sediments, is even more poorly sorted. The interrelations between the dynamics and particle size of the bottom sediment in the deep channel of the PRE have also been investigated by the field measurement and simulated data. The critical shear velocity and the shear velocity are calculated to study the stability of the deep channel. The results indicate that the critical shear velocity has a similar distribution over large part of the deep channel due to the similar particle size distribution of sediments. Based on a comparison between the critical shear velocities derived from sedimentary parameters and the shear velocities obtained by tidal currents, it is likely that the depositional area is mainly distributed in the northern part of the channel, while the southern part of the deep channel has to face higher erosion risk.

关键词： multimodality particle size distribution tidal currents potential erosion Pearl River Estuary

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Microbial transformation of diosgenin by Syncephalastrum racemosum(Cohn) Schroeter

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Chinese Chemical Letters 2010年第1期21卷 76-80页

作者： Zhao, Ying Sun, Ling mei Wang, Xiao Ning Shen, Tao ji, mei Li, Xia Lou, Hong Xiang Shandong Univ Sch Pharmaceut Sci Dept Nat Prod Chem Jinan 250012 Peoples R China

Microbial transformation of diosgenin(1) by Syncephalastrum racemosum yielded five new polar metabolites,which wereidentified as(25R)-spirost-5-en-3β,7α,9α-triol-12-one(2),(25R)-spirost-5-en-3β,9α,12α-triol-7-one(3),(25R)-spirost-5-en-3β,9α-diol-7,12-dione(4),(25R)-spirost-4-en-9α,12β,14α-triol-3-one(5),and(25S)-spirost-4-en-9α,14α,25β-triol-3-one(6).Compounds 1-6 exhibited moderate cytotoxicity against K562 cells and among them compounds 2,3,and 6 were more potentthan the parent compound 1.

关键词： Biotransformation Diosgenin Syncephalastrum racemosum Cytotoxicity

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Estimating health damage cost from secondary sulfate particles—a case study of Hunan Province,China

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Journal of Environmental Sciences 2003年第5期15卷 611-617页

作者： HAO ji ming, LI ji, YE Xue mei, ZHU Tian le (Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. ) Department of Environmental Science and Engineering Tsinghua University Beijing 100084 China

China's coal dominated energy pattern has resulted in large amount of SO 2 emissions. Estimate of the sulfur related health damage cost is necessary to help perform systematic cost benefit analysis and set national energy and emissions control priorities. Current researches were confined to gaseous SO 2 in urban areas; however, secondary sulfate (SO 2- 4) particles can exert serious impact in a wider region. Based on the concept of “intake fraction', CALPUFF long range dispersion model and 180 sample emission sources, multiple regression equation was obtained with good correlation( r =0 85), which illustrates that populations were key parameters to determine intake fraction but source characteristics were insignificant. Based on the formula and the population distribution data, county level intake fractions were mapped for Hunan Province(range: 1 1×10 -6 -3 2×10 -6 ) of China. A combination of county level SO 2 emissions with the intake fractions yields a total 1 98 tons of sulfate(SO 2- 4) inhalation, and resulting total health damage cost to be 0 76(willingness to pay approach, WTP) or 0 16(human capital approach, HC) billion USD in 1997, about 2.1% or 0 45% of GDP in Hunan in 1997. Average health damage cost per ton of SO 2 emission is 930(WTP) or 200 USD(HC). The results demonstrated that more stringent regulation should be forced.

关键词： intake fraction health impact Hunan Province sulfate regression analysis

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Pressure from the lips and the tongue in children with class III malocclusion

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第5期8卷 296-301页

作者： RUAN Wen-hua SU ji-mei YE Xiao-wei Department of Stomatology Children ＇s Hospital School of Medicine Zhejiang University Hangzhou 310003 China

Objective： To discuss possible relationships between class In malocclusion and perioral forces by measuring the pressure from the lips and the tongue of children with class nI malocclusion. Methods： Thirty-one children with class In malocclusion were investigated and their perioral forces were measured at rest and during swallowing under natural head position by a custom-made miniperioral force computer measuring system. Results： The resting pressures exerted on the labial side and palatine side of the upper lett incisor, as well as the labial side and lingual side of the lower lett incisor, were 0 g/cm^2, 0 g/cm^2, 0.57 g/cm^2 and 0.23 g/cm^2, respectively. Correspondingly, the swallowing forces were 2.87 g/cm^2, 5.97 g/cm^2, 4.09 g/cm^2 and 7.89 g/cm^2, respectively. No statistical difference between muscular pressure and gender existed. During swallowing, the lingual forces were significantly higher than the labial forces （P〈0.01）, however, at rest there was no significantly different force between these two sides. Compared to the normal occlusion patients, children with class Ⅲ malocclusion had lower pedoral forces. The upper labial resting forces （P〈0.01）, the lower labial resting forces （P〈0.05） and all the swallowing pressures from the lips and the tongue （P〈0.01） showed statistical differences between the two different occlusion conditions. Meanwhile, no significant difference was found for the resting pressure from the tongue between class Ⅲ malocclusion and normal occlusion. Conclusion： Patients with class Ⅲ malocclusion have lower perioral forces and this muscle hypofunction may be secondary to the spatial relations of the jaws. The findings support the spatial matrix hypothesis.

关键词： Deciduous dentition Perioral force Pressure transducer Class Ⅲ malocclusion

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Ultrasonic diagnosis of patients with clonorchiasis and preliminary study of pathogenic mechanism

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Asian Pacific Journal of Tropical Medicine 2016年第7期9卷 684-687页

作者： mei Fan Lin Lu Chun Su mei Xue ji-mei Dou Pei Li Han-Qi Feng Yan-Bing Fan Department of Ultrasound the First Affiliated Hospital of Zhengzhou University Department of Radiology the Third Affiliated Hospital of Zhengzhou University The Fifth Affiliated Hospital of Zhengzhou University Henan Experimental Kindergarden Department of Pathphysiology Zhengzhou University The Third Affiliated Hospital of Zhengzhou University Anyang Hospital of Traditional Chinese Medicine

Objective:To discuss the liver function damage mechanism of patients with clonorchiasis by analyzing the ultrasound characteristics,liver function,change of the serum inflammatory factors and cell apoptosis ***:Color Doppler ultrasound technique was adopted to detect the portal vein and blood flow change of patients with clonorchiasis;ELISA was used to determine the level of different serum inflammatory *** levels of serum total bilirubin,serum albumin and glutamic-pyruvic transaminase were detected by automatic biochemical *** blot was used to determine the expression of proteins relevant to ***:Compared with the health control group,the trunk diameter of portal vein and the thickness of spleen,as well as the hepatic artery pulsation index of clonorchiasis patients increased obviously,the mean blood flow velocity of portal vein(P<0.05 or P<0.01) *** content of total bilirubin and transaminase in plasma increased significantly,but albumin decreased(P<0.05).Levels of TNF-α,IL-6 and IFN-γ increased remarkably,and the level of every factor was significantly different among patients with Child-Pugh Ⅰ,Child-Pugh Ⅱ and Child-Pugh Ⅲ classification of liver function(P<0.05 or P<0.01).With the exacerbation of liver dysfunction,levels of TNF-α,IL-6 and IFN-γ gradually increased(P<0.05).Compared with the healthy control group,the expression quantity of apoptosis protein Fas,FasL,Bax and Caspase-3 increased significantly(P<0.05 or P<0.01),but Bcl-2 decreased(P<0.05).Conclusions:Changes of ultrasonic characteristics and liver dysfunction,caused by liver fluke infection,may be related to that both inflammatory response and apoptosis response have participated in the pathogenic process and liver damage course of clonorchiasis.

关键词： Clonorchiasis Ultrasonic diagnosis Inflammatory reaction Cell apoptosis

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Microbial transformation of glycyrrhetinic acid and potent neural anti-inflammatory activity of the metabolites

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Chinese Chemical Letters 2017年第6期28卷 1200-1204页

作者： Yuan Ma ji-mei Liu Ri-Dao Chen Xi-Qiang An Jun-Gui Dai State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences & PekingUnion Medical College Beijing 100050 China Xinjiang Institute of Materia Medica Urumqi 830004 China Beijing Key Laboratory of Non-Clinical Drug Metabolism and PK/PD Study Institute of Materia Medica Chinese Academy of Medical Sciences & PekingUnion Medical College Beijing 100050 China

The microbial transformation of glycyrrhetinic acid（1） by Cunninghamella blakesleana CGMCC 3.970 led to the production of five new metabolites（2-6）.The structures of the metabolites were determined by extensive spectroscopic（HR-ESIMS,1D and 2D NMR） data *** involved reactions exhibited specific hydroxylations at C-24,C-7,and C-15,and oxidation at ***,compounds 2,5,and 6showed significant neural anti-inflammatory activity by inhibiting lipopolysaccharide-induced NO production in mouse microglia BV2 cells with IC（50） values of 0.76,0.94,and 0.16μmol/L,respectively.

关键词： Glycyrrhetinic acid Microbial transformation Anti-inflammatory activity Cunninghamella blakesleana Triterpenoid

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