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Hydroxylation of 3-nitrotyrosine by hydroxyl radical

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Chinese Chemical Letters 2007年第5期18卷 542-544页

作者： Jun Chen Dong Wei qun Shi Yu Fen Zhao Yan mei Li Key Laboratory of Bioorganic Phosphorous Chemistry ＆ Chemical Biology （Ministry of Education） Department of Chemistry Tsinghua University Beijing 100084 China

Hydroxylation of 3-nitrotyrosine （3-NT） and 3-NT containing peptide Gly-nitroTyr-Gly in aqueous solution by hydroxyl radical were investigated with gamma irradiation. The structures of the hydroxylated products were confirmed by electrospray ionization mass spectrometry and ^1H NMR spectrometry. The reactivity of 3-nitrotyrosine has been investigated using density functional theory （DFT） calculation.

关键词： 3-Nitrotyrosine Hydroxyl radical DFT Selective hydroxylation

Precautions in caudate lobe resection: Report of 11 cases

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World Journal of Gastroenterology 2008年第17期14卷 2767-2770页

作者： Zeng-Qing Wen Yi-qun Yan Jia-mei Yang Meng-Chao Wu First Department of Hepatic Surgery Eastern HepatobiliarySurgery Hospital Second Military Medical University Shanghai200438 China

AIM： To find the precautions against the safety in caudate lobe resection. METHODS： The clinical data obtained from 11 cases of primary liver cancer in caudate lobe who received hepatectomy successfully were retrospectively analyzed. Four safe procedures were used in resection of primary liver cancer in caudate lobe：（1） selection of appropriate skin incision to obtain excellent exposure of operative field; （2） adequate mobilization of the liver to allow the liver to be displaced upwards to the left or to the right; （3） preparatory placement of tapes for total hepatic vascular exclusion, so that this procedure could be used to control the fatal bleeding of the liver when necessary; （4） selection of the ideal route for hepatectomy based on the condition of the tumor and the combined removal of multiple lobes if necessary. Among the 11 cases, simple occlusion of vessels of porta hepatis was used in caudate Iobectomy for 6 cases, while in the other cases, the vessels were intermittently occluded several times or total hepatic vascular isolation was used in the caudate Iobectomy. Combined partial right hepatectomy was done for 3 cases, combined left lateral Iobectomy for 2 cases and caudate Iobectomy alone for 6 cases. RESULTS： Operation was successful for all the 11 cases. Intermittent inflow occlusion was performed for all patients for 15 min at 5-min intervals. Blockade was performed twice in 3 patients and total hepatic vascular exclusion was performed in one of the three patients. Blockade was performed three times in one patient, including a total hepatic vascular exclusion. Total hepatic vascular exclusion was performed only in one patient. The mean blood loss was 300 mL. Ascites and pleural effusion occurred in 4 patients, jaundice in 1 patient. Six patients died of tumor recurrence in 6, 11, 12, 13, 15, 19 mo after operation, respectively. The other 5 patients have survived more than 16 mo since the operation. CONCLUSION： Caudate Iobectomy for liver cance

关键词： Caudate lobe Primary liver cancer Hepatectomy Porta hepatis Vascular exclusion

Synthesis of 9-Arylpolyhydroacridine Promoted by Ionic Liquid Under Solvent-free Condition

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Chinese Chemical Letters 2006年第7期17卷 874-876页

作者： Jian Hua WEI Yi qun LI Xi Zhong LIAN mei Yun ZHOU Department of Chemistry Jinan University Guangzhou 510632

The condensation reactions of aromatic aldehydes, 5,5-dimethyl-1,3-cyclohexanedione and ammonium acetate efficiently promoted by several ionic liquids under solvent-free condition to afford corresponding 3, 3, 6, 6-te... 详细信息

关键词： 9-Arylpolyhydroacridine ionic liquid synthesis.

Uterine rupture in patients with a history of multiple curettages:Two case reports

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World Journal of Clinical Cases 2020年第24期8卷 6322-6329页

作者： mei-Fang Deng Xiao-Di Zhang qun-Feng Zhang Jue Liu Department of Obstetrics and Gynecology The Second Affiliated Hospital of Nanhua UniversityHengyang 421001Hunan ProvinceChina

BACKGROUND Uterine rupture is a serious obstetric emergency,a severe event,and a serious threat to maternal and fetal *** is a rare and not well characterized by the fact that multiple operations of uterine cavities contribute to uterine rupture during *** uterine rupture is easily misdiagnosed as other obstetric or surgical *** current guidelines,abdominocentesis is a contraindication for late ***,the cases presented in this report provide new ideas for clinical diagnosis and treatment of uterine *** SUMMARY Case 1,a 34-year-old woman(gravida 5,para 2),32 wk and 4 d of gestation,presented with acute upper abdominal pain for 8 h with nausea and *** tomography(CT)revealed pelvic and abdominal *** extracted 3 mL unclotted blood from her abdominal *** emergency caesarean section was performed.A uterine rupture was found,and the fimbrial portion of the left fallopian tube was completely adhered to the *** prognosis of both the mother and the infant was *** 2,a 39-year-old woman(gravida 10,para 1)at 34 wk and 3 d of gestation complained of persistent lower abdominal pain for half a *** vital signs were *** revealed a high probability of pelvic and abdominal *** extracted 4 mL dark red blood without *** emergency laparotomy was *** rupture was identified during the *** course in both the mother and infant was *** For pregnant women in the second or the third trimester with persistent abdominal pain,abdominal effusion,fetal distress and even fetal death,the possibility of uterine rupture should be highly *** can identify acute abdominal surgical or gynecological and obstetric *** is helpful for diagnosing and clarifying the nature of effusion,but its clinical value need to be confirmed by further clinical studies.

关键词： Uterine rupture Clinical manifestations Early diagnosis Abdominocentesis Multiple curettages Case report

The mass of the Galactic dark matter halo from-9000 LAMOST DR5 K giants

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Research in Astronomy and Astrophysics 2018年第9期18卷 89-100页

作者： Meng Zhai Xiang-Xiang Xue Lan Zhang cheng-Dong Li Gang Zhao cheng-qun Yang National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China

We constrain the mass of the Milky Way＇s dark matter halo, based on the kinematics of 9627 K giants at Galactocentric distances ranging over 5 kpc 〈 r 〈 120 kpc drawn from LAMOST *** substructure in this sample has been identified and removed carefully to enable construction of the underlying line-of-sight velocity dispersion at different radii from the Galactic center. We interpret the radial profile of the line-of-sight velocity dispersion using a spherical Jeans equation under the assumptions of anisotropy/isotropy and that radial velocity dispersion is approximately equal to line-ofsight velocity dispersion σ_r（r）≈σ_（los）（r）. If we assume that the dark matter halo follows an NFW profile and the stellar halo is isotropic（β = 0）, then σlos（r） can be directly used to estimate the virial mass of the Galactic dark matter halo, M_（vir） = 1.08_（-0.14）^（＋0.17） ×10^（12） M⊙, and concentration parameter c = 18.5＋-2.***.3.6 In case that the stellar halo is anisotropic, we cannot avoid differentiation of sparse velocity dispersions according to the Jeans equation, which may cause overestimation of the mass. We use an isotropic case to test and find that d ln（σ_（los）~2 （r））/d ln r overestimates the virial mass by 15% but within 1-σ error. We use d ln（σ2 los（r））/d ln r to fit the NFW profile and get M_（vir） = 1.11_（-0.20）^（＋0.24） ×10^（12） M⊙and c = 13.8-2.2＋3.0 in case of β = 0.3.

关键词： dark matter - Galaxy halo - stars kinematics and dynamics

The Adjacency and Signless Laplacian Spectra of Cored Hypergraphs and Power Hypergraphs

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Journal of the Operations Research Society of China 2017年第1期5卷 27-43页

作者： Jun-Jie Yue Li-Ping Zhang mei Lu Li-qun Qi Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China State Key Laboratory of Space Weather Chinese Academy of SciencesBeijing 100910China Department of Applied Mathematics The Hong Kong Polytechnic UniversityHong KongChina

In this paper,we study the adjacency and signless Laplacian tensors of cored hypergraphs and power *** investigate the properties of their adjacency and signless Laplacian ***,we find out the largest H-eigenvalues of adjacency and signless Laplacian tensors for uniform *** also compute the H-spectra of sunflowers and some numerical results are reported for the H-spectra.

关键词： H-eigenvalue Hypergraph Adjacency tensor Signless Laplacian tensor Sunflower Squid

Study of Relation between EFL Students'Cognitive Style and Pragmatic Competence

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Journal of Electronic Science and Technology 2017年第1期15卷 41-47页

作者： Kai-Wen cheng Yi Wang Hong-mei Yan Key Laboratory for NeuroInformation of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 610054China Zhejiang University Hangzhou 310058China

Individual difference is one of the important factors affecting the success of learning English as foreign language（EFL）. However, very little research has dabbled in the correlation between pragmatic competence and cognitive styles among college students. Two questionnaires（the embedded figure test and the pragmatic competence test） were designed and used to conduct our study among seniors with non-English majors from key universities. The data was analyzed with SPSS 21.0 and results showed that pragmatic competence of the subjects was much lower than expected. Besides, there was a significant and positive correlation between field dependent（FD）cognitive style and inter-language pragmatic competence while no significant correlation was found with field independent（FI）. A regression model was also formulated to obtain more specific information. Lastly,some practical advice is offered for teachers to boost students＇ pragmatic competence in the future with FD/FI cognitive styles into proper consideration.

关键词： competence pragmatic Competence Style majors college proficiency questionnaire affecting universities

Multiuser subcarriers and bit allocation combining adaptive mapping for SC-FDMA system

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The Journal of China Universities of Posts and Telecommunications 2008年第3期15卷 41-46页

作者： ZHANG Yu-mei XIN Yu YANG Da-cheng School of Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China Zhongxing Telecommunication Equipment Shenzhen 518004 China

In this article, a multiuser single carrier frequency division multiple access （SC-FDMA） system is considered, based on which an adaptive subcarrier and bit allocation algorithm is investigated. The algorithm has been used to achieve a subcarrier mapping mode in this system, which combines the advantages of single- and multi-carrier transmissions, such as, low peak to average power ratio, orthogonality of signals of different users, and low complexity. Simulation results show that it has a similar performance as that of the adaptive allocation algorithm in the orthogonal frequency division multiple （OFDM） system and the proposed mapping mode has a performance gain over the two existing mapping modes at the link level.

关键词： adaptive subcarrier and bit allocation SC-FDMA subcarrier mapping modes bit error ratio (BER)

CD163 promotes hematoma absorption and improves neurological functions in patients with intracerebral hemorrhage

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Neural Regeneration Research 2016年第7期11卷 1122-1127页

作者： Wen-jing Xie Hong-quan Yu Yu Zhang qun Liu Hong-mei Meng Department of Neurology and Neuroscience Center First Hospital of Jilin University Department of Neurosurgery First Hospital of Jilin University

Clinical outcomes are positively associated with hematoma *** monocyte-macrophage scavenger receptor,CD163,plays an important role in the metabolism of hemoglobin,and a soluble form of CD163 is present in plasma and other tissue fluids;therefore,we speculated that serum CD163 affects hematoma absorption after intracerebral *** with intracerebral hemorrhage were divided into high-and low-level groups according to the average CD163 level（1,977.79 ± 832.91 ng/m L）.Compared with the high-level group,the low-level group had a significantly slower hematoma absorption rate,and significantly increased National Institutes of Health Stroke Scale scores and modified Rankin Scale *** results suggest that CD163 promotes hematoma absorption and the recovery of neurological function in patients with intracerebral hemorrhage.

关键词： hematoma intracerebral neurological hemoglobin NIHSS metabolism macrophage slower traumatic scavenger