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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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Query routing mismatch alleviation architecture for P2P file lookup in MANETs

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The Journal of China Universities of Posts and Telecommunications 2011年第4期18卷 111-117页

作者： mei jing-qing ji Hong LI Yi Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

A cross-layer optimized query routing mismatch alleviation （QRMA） architecture is proposed to mitigate the problem of query routing mismatch （QRM） phenomenon between the structured peer to peer （P2P） overlay and the routing layer in mobile Ad-hoc networks （MANETs）, which is an important issue that results in the inefficiency of lookup process in the system. Explicated with the representative Chord protocol, the proposal exploits the information of topologic neighbors in the routing layer of MANETs to find if there is any optimized alternative next hop in P2P overlay during conventional lookup progress. Once an alternative next hop is detected, it will take the shortcut to accelerate the query procedure and therefore alleviate the QRM problem in scalable MANETs without any assistance of affiliation equipments such as GPS device. The probability of finding out such an alternative node is formulated and the factors that could increase the chance are discussed. The simulation results show that the proposed architecture can effectively alleviate the QRM problem and significantly improve the system performance compared with the conventional mechanism.

关键词： query routing mismatch P2P overlay Chord MANETs

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Cross-layer optimized Chord protocol for separated ring convergence in MANET

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The Journal of China Universities of Posts and Telecommunications 2009年第4期16卷 84-90页

作者： mei jing-qing ji Hong LI Ting Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

An optimized Chord protocol is proposed to solve the convergence problem for separated Chord rings over mobile Ad-hoc networks （MANETs）. This protocol exploits the information of topological neighbors in routing layer by utilizing a cross-layer design, and periodically detects whether there is any neighbor node that belongs to an alien Chord ring by sending detecting packets. The detection will be confirmed and then the corresponding predecessor node will be found out to initialize convergence of the Chord rings. Theoretical analysis and experiment results show that the proposed algorithm can detect separated Chord rings and implement the convergence process efficiently, and that a significant improvement in the successful lookup ratio is also achieved at an acceptable overhead for the system maintenance. Moreover, the proposed protocol can ensure the stability and scalability of the system.

关键词： convergence Chord mobile Ad-hoc network (MANET) cross-layer

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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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Perivascular epithelioid cell tumor of the liver:A report of two cases and review of the literature

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World Journal of Gastroenterology 2007年第41期13卷 5537-5539页

作者： Song-Hua Fang Li-Na Zhou mei jin ji-Bo Hu Department of Radiology Sir Run Run Shaw Hospital Zhejiang University Hangzhou 310016 Zhejiang Province China

Perivascular epithelioid cell tumor (PEComa) is a rare tumor which arises from mesenchymal tissues. It is predominant in the uterus,but very rare in the liver. To the best of our knowledge,less than 5 cases of PEComa of the liver have been reported. Herein we present two pathologically proven cases of PEComa of the liver,retrospectively analyze their clinical and imaging features,and review the literature.

关键词： Liver Neoplasm Tomography, X-ray computed Magnetic resonance imaging

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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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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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Identification of Quantitative Trait Loci for Rice Quality in a Population of Chromosome Segment Substitution Lines

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Journal of Integrative Plant Biology 2009年第5期51卷 500-512页

作者： Wei Hao mei-Zhen Zhu ji-Ping Gao Shi-Yong Sun Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Shanghai 200032 China

The demand for high quality rice represents a major issue in rice production. The primary components of rice grain quality include appearance, eating, cooking, physico-chemical, milling and nutritional qualities. Most of these traits are complex and controlled by quantitative trait loci （QTLs）, so the genetic characterization of these traits is more difficult than that of traits controlled by a single gene. The detection and genetic identification of QTLs can provide insights into the genetic mechanisms underlying quality traits. Chromosome segment substitution lines （CSSLs） are effectivetools used in mapping QTLs. In this study, we constructed 154 CSSLs from backcross progeny （BC3F2） derived from a cross between ＇Koshihikari＇（an Oryza sativa L. ssp. japonica variety） as the recurrent parent and ＇Nona Bokra＇（an O. sativa L. ssp. indica variety） as the donor parent. In this process, we carried out marker-assisted selection by using 102 cleaved amplified polymorphic sequence and simple sequence repeat markers covering most of the rice genome. Finally, this set of CSSLs was used to identify QTLs for rice quality traits. Ten QTLs for rice appearance quality traits were detected and eight QTLs concerned physico-chemical traits. These results supply the foundation for further genetic studies and breeding for the improvement of grain quality.

关键词： appearance quality traits chromosome segment substitution lines Oryza sativa physico-chemical quality traits quantitative trait loci

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