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The mini-QSO's contribution to cosmic reionization

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Research in Astronomy and Astrophysics 2010年第3期10卷 199-210页

作者： Ying-Ying Wang Lei Wang shou-ping xiang Yu Wang Jing-Meng Hao Ye-Fei Yuan Center for Astrophysics University of Science and Technology of China Hefei 230026 China Shanghai Astronomical Observatory Joint Institute for Galaxy and Cosmology （JOINGC） of SHAO and USTC Shanghai 200030 China

By employing an improved simulation of the evolution of black holes （BHs） based on the merger tree of dark matter halos, we explore the relationship between the central BH mass Mbh and velocity dispersion σ＊ at high redshift z ≥ 6 and quantify the mini-QSO＇s （with BH mass M = 200 - 105M⊙） contribution to cosmic reionization. The simulation demonstrates how seed BHs migrate onto the MBH-σ＊ relation by merging with each other and accreting gas at z ≥ 6： 1. The correlation between BHs and their host halos increases as the BHs grow; 2. The slope, i.e. Ф = dlog（Mbh）/dlog（σ＊） in the relationship, is insensitive to the redshift at z 〉 6. In agreement with previous work, we find that mini-QSOs＇ ionizing capability to the Universe lies in the range - 25% - 50% if early miniquasars have extremely high duty cycles, i.e. P（z 〉 6） - 0.9 - 1.

关键词： cosmology: theory -- galaxies: evolution

Scale-Scale Correlation as Discriminant Among the Biased Galaxy Formation Models

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Chinese Physics Letters 2001年第5期18卷 711-714页

作者： FENG Long-Long xiang shou-ping Centre for Astrophysics University of Science and Technology of ChinaHefei 230026 National Astronomical Observatories Chinese Academy of SciencesBeijing 100012

Using the mock galaxy catalogues created from the N-body simulations,various biasing prescriptions for modeling the relative distribution between the galaxies and the underlying dark matter are statistically tested by using scale-scale *** found that the scale-scale correlation is capable of breaking the model degeneracy indicated by the low order clustering statistics,and could be taken as an effective discriminant among a variety of biasing ***,comparing with the APM bright galaxy catalogue,we infer that the two parameter Lagrangian biasing model gives the best fit to the observed clustering features.

关键词： galaxy Galaxy breaking

Effect of acupuncture at Foot-Yangming Meridian on gastric mucosal blood flow, gastric motiiity and brain-gut peptide

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World Journal of Gastroenterology 2007年第15期13卷 2229-2233页

作者： Ya-ping Lin shou-xiang Yi Jie Yan Xiao-Rong Chang The Institute of Acupuncture Moxibustion and Massage Hunan University of Traditional Chinese Medicine Changsha 410007 Hunan Province China

AIM： To observe the effect of acupuncture at Foot- Yangming Meridian on gastric mucosal blood flow （GMBF）, gastric motility and brain-gut peptide. METHODS： Sixty SD rats were randomly divided into 6 groups： normal control group, model group （group with gastric mucosal damage, GMD）, Sibai group （with acupuncture at Sibai point ＋ GMD）, Tianshu group （with acupuncture at Tianshu point ＋ GMD）, Zusanli group （with acupuncture at Zusanli point ＋ GMD） and non-acupoint group （with acupuncture at non-acupoint ＋ GMD）. The GMD model group was induced by infusing pure alcohol into gastric cavity. H2 Gas Clearance Test （HGCT） was used to measure GMBF, the frequency and amplitude of gastric motility were measured by the method of aerocyst, the content of brain-gut peptide in sinus ventriculi and bulbus medullae were detected by radioimmunoassay. RESULTS： Inhibitory effect of the frequency and amplitude of gastric motility were shown in model group, and the rates of frequency and amplitude changes were remarkably different from the normal control group （-19.41 ± 17.21 vs-4.71 ± 10.32, P 〈 0.05; -51.61 ± 29.02 vs 1.81 ± 14.12, P 〈 0.01）. In comparison with control group, the GMBF was 0.52 ± 0.161 mL vs 1.03 ± 0.255 mL per 100g tissue/min, P 〈 0.01, the content of motilin in sinus ventriculi and bulbus medullae was 63.04 ± 7.77 pg/mL vs 72.91 ± 8.42 pg/mL, P 〈 0.05 and 50.96 ± 8.77 pg/mL vs 60.76 ± 8.05 pg/mL, P 〈 0.05, but the content of somatostatin in sinus ventriculi and bulbus medullae was 179.85 ± 43.13 ng/g vs 90.54 ± 40.42 ng/g, P 〈 0.01 and 532.86 ± 122.58 ng/g vs 370.91 ± 76.29 ng/g, P 〈 0.05,respectively. In comparison with model group, the amplitude of gastric motility was 1.52 ± 20.13, -6.52 ± 23.31, 6.92 ± 25.21 vs -51.61 ± 29.02, P 〈 0.01 and GMBF was 0.694 ± 0.160 mL vs 0.893 ± 0.210 mL, 1.038 ± 0.301 mL vs 0.52 ± 0.161 mL per 100g tissue/rain, P 〈 0.01, respectively in Tianshu, Sibai and Zusanli groups, the content of motilin in sinus ventriculi and bulbus medul

关键词： Electro-acupuncture Foot-Yangming Meridian Gastric motility Motilin Somatostatin

STABILITY OF THEORETICAL SOLUTION AND NUMERICAL SOLUTION OF NONLINEAR DIFFERENTIAL EQUATIONS WITH PIECEWISE DELAYS

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Journal of Computational Mathematics 2005年第4期23卷 393-400页

作者： Li-ping Wen shou-fu Li School of Mathematics and Computational Science Xiangtan University Xiangtan 411105 China

This paper is concerned with the stability of theoretical solution and numerical solution of a class of nonlinear differential equations with piecewise delays. At first, a sufficient condition for the stability of theoretical solution of these problems is given, then numerical stability and asymptotical stability are discussed for a class of multistep methods when applied to these problems.

关键词： Stability Delay differential equations Linear multistep methods

Enhanced expression of epidermal growth factor receptor gene in gastric mucosal cells by the serum derived from rats treated with electroacupuncture at stomach meridian acupoints

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World Journal of Gastroenterology 2006年第34期12卷 5557-5561页

作者： Zong-Bao Yang Jie Yan Xiao-ping Zou shou-xiang Yi Xiao-Rong Chang Ya-ping Lin Xi-ping Li College of Acupuncture and Moxibustion Hunan University of Traditional Chinese Medicine Changsha 410007 Hunan Province China

AIM: To investigate the effect of serum derived from rats treated with electroacupuncture at stomach meridian acupoints on the expression of epidermal growth factor receptor (EGFR) gene in gastric mucosal cells. METHODS: The stress-induced gastric mucosal injury in rat model was established by water-immersion and restrained stress methods. 52 rats were randomly divided into: normal group (n = 8), model group (n = 8), model serum group (n = 12), stomach serum group (n = 12), and gallbladder serum group (n = 12). The gastric mucosal cells were separated by pronase-EDTA digestion method and incubated with serum. The EGFR gene expression in gastric mucosal cells was detected by reverse transcription-polymerase chain reaction (RT-PCR) method. RESULTS: Compared with normal group (0.6860 ± 0.0594), the serum derived from rats of the stomach group (1.2272 ± 0.0813, P = 0.00 0.05) and in model serum group (0.8516 ± 0.0409) with an extremely obvious difference (P = 0.001 < 0.01). Furthermore, the EGFR gene expression in stomach serum group was significantly higher than that in gallbladder serum group (P = 0.00 < 0.01). CONCLUSION: The present study shows that serumderived from rats treated with electroacupuncture at stomach meridian acupoints can distinctly increase the EGFR gene expression of gastric mucosal cells. Therefore, there is certain meridian specificity in the serum, which could provide a proof for the TCM theory “particular relation between meridian and internal organ”.

关键词： Electroacupuncture Serum Stomach meridian acupoints Gastric mucosal cells Epidermal growth Factor receptor Gene expression

Effect of electro-acupuncture at Foot-Yangming Meridian on somatostatin and expression of somatostatin receptor genes in rabbits with gastric ulcer

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World Journal of Gastroenterology 2006年第11期12卷 1761-1765页

作者： shou-xiang Yi Ren-Da Yang Jie Yan Xiao-Rong Chang Ya-ping Ling Department of Acupuncture and Moxibustion Hunan College of Traditional Chinese Medicine Changsha 41007 Hunan Province China

AIM： To discuss the protective effect of electroacupuncture at the Foot-Yangming Meridian on gastric mucosal lesion, somatostatin （SS） and the expression of SS receptor genes （SSR1mRNA） in rabbits with gastric ulcer and to further explore the relative specificity of meridians and viscera at gene expression level. METHODS： Forty rabbits were randomly divided into control group （A）, gastric ulcer model group （B）, FootYangming Meridian group （C）, Foot-Shaoyang Meridian group （D） and Foot-Taiyang Meridian group （E）. The gastric ulcer model was prepared by infusing alcohol into stomach. Groups C-E were treated with electroacupuncture at points along the above meridians using meridian stimulating instruments for 7 days respectively. By the end of treatment, the index of gastric ulcer was determined, the amount of epidermal growth factor（EGF） and somatostatin was measured by radioimmunoassay （PJA）. SS-R1mRNA expression in gastric mucosa was determined by RT-PCR. RESULTS： The value of EGF in model group was obviously lower（73.6±14.8 vs 91.3±14.9 pg/mL, P〈 0.01） than that in control group. The index of gastric ulcer, content of SS and expression of SSRtmRNA in gastric mucosa were significantly higher than those in control group （24.88 ± 6.29 vs 8.50 ± 2.98 scores, P〈 0.01; 2978.6 ± 587.6 vs 1852.4 ± 361.7 mIU/mL, P〈 0.01; 2.56±0.25 vs 1.04±0.36, P〈0.01） . The value of EGF in Foot-Yangming Meridian group was higher than that in model group（92.2±6.7 vs 73.6±14.8 pg/mL, P〈 0.01）. The index of gastric ulcer, content of SS and expression of SS-R1mRNA in gastric mucosa were significantlylower than those in control group（10.88±3.23 vs 24.88±6.29 scores, P〈0.01; 1800.2±488 vs 2978.6±587.6 mIU/mL, P 〈 0.01; 1.07±0.08 vs 2.56±0.25mIU/mL, P〈0.01）. Compared to the model group, the content of SS and expression of SSRlmRNA in gastric mucosa in Foot-Shaoyang Meridian group decreased （2441.0±488. vs 2978.6± 587.6 mIU/mL, P〈 0.05; 1.73±0.16 vs 2.56±0.25 mIU/mL, P〈0.01）. But the above paramet

关键词： Foot-Yangming Meridian Electro-acupuncture Somatostatin SSR1mRNA

Effect of pre-moxibustion on apoptosis and proliferation of gastric mucosa cells

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World Journal of Gastroenterology 2007年第15期13卷 2174-2178页

作者： shou-xiang Yi Yan Peng Xiao-Rong Chang Na Peng Jie Yan Yap-ping Lin The Institute of Acupuncture Moxibustion and Massage Hunan University of Traditional Chinese Medicine Changsha 410007 Hunan Province China

AIM： TO observe the effects of pre-moxibustion on apoptosis and proliferation of gastric mucosal cell in rats with stress-induced ulcer, and to analyze the relationship between those effects and the expression of heat-shock protein 70 （HSP70）. METHODS： Sixty healthy Sprague Dawley rats were randomly assigned into four groups, namely group A, B, C and D. The animal model of stress ulcer was established by water immersion and restraint stress. The rats in group A, B, and D served as the restraint, model, and non-acupoint controls, respectively, while those in group C received moxibustion at Zusanli and Uangmen points. Immunohistochemical methodology was used to detect the expression of HSP70, apoptosis index （AI, × 10^-6/μm^2） and proliferation index （PCNA-LI, × 10^-6/μm^2）. The mucosal expression of transforming growth factor α （TGF-α） was detected by radioimmunoassay. RESULTS： IVloxibustion at Zusanli and Liangmen points significantly decreased the gastric injury and the apoptosis of gastric mucosal cells, while markedly increased the mucosal expression of TGF-α and HSP70 as well as the proliferation of gastric mucosal cells. Compared with group A, ulcer index （UI）（26.8 ± 9.8 vs 12.0 ± 5.9, P 〈 0.01）, AI （9.6 ± 4.2 vs 4.4 ± 2.6, P 〈 0.05） and expression of HSP70 （9.6 ± 4.2 vs 4.4 ± 2.6, P 〈 0.05） were significantly increased, but the content of TGF-α （104.7 ± 51.2 pg/mL vs 254.0 ± 86.9 pg/mL, P 〈 0.01） and PCNA-LI （6.9 ± 4.7 vs 14.9 ± 4.6, P 〈 0.05） were significantly decreased in group B. However, ulcer index values （UI） and AI were obviously lower in group C compared to groups B and D （14.1 ± 5.4 vs 26.8 ± 9.8 and 26.2 ± 7.7, P 〈 0.01, 3.0 ± 1.6 vs 9.6 ± 4.2 and 8.2 ± 5.2, P 〈0.05, respectively）, but content of TGF-α （237.0 ± 72.6 pg/mL vs 104.7 ± 51.2 pg/mL and 154.1 ± 61.3 pg/mL, P 〈0.01） and expression of HSP70 （0.13 ± 0.03 vs 0.08 ± 0.06 and 0.06 ± 0.04, P 〈 0.05） were higher in group C. Furthermore, the PCNA-LI was significantly higher in group C than in

关键词： Moxibustion Stress ulcer HSP70 Proliferating cell nuclear antigen Apoptosis

Thrombotic pulmonary embolism of inferior vena cava during caesarean section:A case report and review of the literature

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World Journal of Clinical Cases 2022年第13期10卷 4226-4235页

作者： Lan Jiang Wei-xiang Liang Yi Yan shou-ping Wang Li Dai Dun-Jin Chen Department of Medical Ultrasound The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510150Guangdong ProvinceChina Department of Cardiology The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510150Guangdong ProvinceChina Department of Anesthesiology The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510015Guangdong ProvinceChina Department of Obstetrics and Gynecology The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510015Guangdong ProvinceChina

BACKGROUND Thrombotic pulmonary embolism(TPE)is one of the most critical diseases in obstetrics but is rarely reported in caesarean section(CS)because TPE patients in CS have a high risk of death and are difficult to *** case report of TPE during CS was recorded by transthoracic echocardiography(TTE)and can provide a reference for the differential diagnosis of critical illnesses in *** SUMMARY A 37-year-old pregnant woman with rheumatic heart disease(RHD),gravida 5 and para 1(G5P1),presented for emergency CS at 33 wk and 3 d of gestation under general anesthesia because of acute heart failure,pulmonary hypertension and *** placental removal during CS,TTE revealed a nascent thrombus in the inferior vena cava(IVC)that elongated,detached and fragmented leading to acute thromboembolic events and acute *** report presents the whole process and details of TPE during CS and successful rescue without any sequelae in the *** case gives us new ideas for the diagnosis of death or cardiovascular accidents during CS in pregnant women with heart disease and the detailed presentation of the rapid development of TPE may also elucidate new ideas for *** case also highlighted the importance of prophylactic anticoagulation in the management of heart disease during *** Pregnancy with heart failure could trigger inferior vena cava(IVC)-origin TPE during *** and timely treatment can avoid serious consequences.

关键词： Caesarean section Pulmonary embolism Thrombosis Heart failure Echocardiography Case report

Effect of electroacupunture on gastric mucosal intestinal trefoil factor gene expression of stress-induced gastric mucosal injury in rats

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World Journal of Gastroenterology 2006年第12期12卷 1962-1965页

作者： Xi-ping Li Jie Yan shou-xiang Yi Xiao-Rong Chang Ya-ping Lin Zong-Bao Yang Ai Huang Rong Hu Institute of Acupuncture and Moxibustion Hunan College of Traditional Chinese Medicine Chang'sha 410007 Hunan Province China

AIM： To investigate electroacupunture（EA） at the acupoints of Stomach Meridian of Foot-Yangming（SMFY）, Gallbladder Meridian of Foot-Yangming（SMFY） on gastric mucosal intestinal trefoil factor （ITF） gene expression detection in stress-induced rats with gastric mucosal lesion, and to explore the regulatory mechanism and significance of EA-related gastric mucosal protective effect. METHODS： Forty rats were randomly divided into 4 groups： Blank group, Model group, Model group＋EA at acupoints of SMFY group（＂SMFY group＂）, and Model group＋EA at acupoints of GMFY group（GMFY group）. All rats （except blank group） were made model by water immersion and restraint stress （WRS）. Then the gastric mucosa tissue in each rat was taken off alter assessment of gastric mucosal lesion index（GUI）, and the expression of ITF mRNA of the tissues was detected by reverse transcdption-polymerase chain reaction（RT-PCR） method. RESULTS： Compared with Model group（S4.3± 1.34）, the GUI value in SMFY group （31±2.211 decreased significantly（P〈0.01）, so did that in GMFY group （39.8± 1.62, P〈0.05）, meanwhile GUI value in SMFY group was significantly lower than in GMFY group（P〈0.01）. Compared with Model group （0.65±0.01）, EA had a tendency to improve the expression of gastric mucosal ITFmRNA gene： such tendency existed in GMFY group （0.66±0.01） but with no signficant difference（P〉 0.05）, in SMFY group（0.76±0.01） with an extremely obvious difference （P〈0.01）, furthermore the expression in SMFY group was significantly higher than in GMFY group （P〈 0.01）.CONCLUSION： The gastric mucosal protective effect by EA at the acupoints of SMFY and GMFY was related to the expression variance of ITF, indicating certain meridian specificity exists, It could be one proof for the TCM theory ＂Relative pardcularity between SMFY and stomach＂.

关键词： EA Relative particularity between Stomach Meridian of Foot-Yangming, Gastric mucosal damage,Stress Intestinal trefoil factor Gene expression