一种改进的Xue-Wierzbicki延性断裂模型

提出了一种改进的Xue-Wierzbicki延性断裂模型以预测高强度结构钢材在多轴应力状态下的延性极限。采用改进的Lee-Mear椭球形孔洞缺陷膨胀理论建立了轴对称拉伸与平面应变拉伸条件下应力三轴度与断裂应变间的函数关系。随后,将上述改进的Lee-Mear断裂应变函数与Xue-Wierzbicki椭圆型Lode角函数结合,以考虑剪切荷载对材料延性极限的影响。提出的断裂模型具有如下两个优点:新模型可准确预测不同应力三轴度与Lode角下高强钢的延性极限;新模型中各参数均有明确的物理含义,可反映材料的力学性能与微观缺陷几何特征。为验证新断裂模型的正确性与精度,利用Q460和Q690高强钢切口试件的断裂试验结果对新模型的参数进行了校准,并计算了各试验试件断裂应变数据点与新模型预测的断裂应变曲面间的平均误差。结果表明,提出的断裂模型可准确预测不同应力状态下Q460和Q690高强钢的延性极限,模型预测结果与两种材料试验结果间的误差平方和分别为4.2%与0.28%,表明新断裂模型具有良好的预测精度。

Effect of Tong-Qiao-Huo-Xue decoction on the expressions of related proteins of the blood-brain barrier and analysis of constituents in cerebrospinal fluid of cerebral ischemic rats

OBJECTIVE To evaluate the effects of Tong-Qiao-Huo-Xue decoction(TQHXD)on the bloodbrain barrier(BBB)permeability and the expressions of related proteins on the rats;and to analyse the constituents in the cerebrospinal fluid on the rats with cerebral ischemic injury.METHODS Cerebral ischemia rats were induced by middle cerebral artery occlusion(MCAO).Adult male sprague-dawley(SD)rats were randomly divided into seven groups:sham-group;model group;nimodipine(NMP)-treated group and nao mai tai(NMT)-treated group were set as positive drug control groups;TQHXD-treated group(3,6 and 12g·kg-1body weight);The neurological function of rats was estimated by neurological defect scoring after the 1,7and 15 dafter administration.Histological structure of the brain in rats were observed by hematoxylin and eosin(H&E)staining.Ultramicrostructural features of hippocampus neurons and the opening of tight junction(TJ)of BBB in rats were observed by transmission electron microscope(TEM).Western blotting was performed to detect the expression of ZO-1,occludin,claudin-5,AQP-4 and MMP-9 in BBB after cerebral ischemia injury.Component analysis experiments:adult male SD rats were randomly divided into four groups:Distilled water was administered intragastrically sham-operated rats;Distilled water was administered intragastrically model rats by MCAO;TQHXD was administered intragatrically to rats in sham-operated group;TQHXD was administered intragestrically to rats in model group by MCAO.GC and HPLC was used to detect three compounds,namely,muscone,ligustilide and hydroxysafflor yellow A,in rats cerebrospinal fluid(CSF)after oral administration of TQHXD.Finally,samples of cerebrospinal fluid of rats in each group were compared with single medicine so as to explicit the three compounds come from which herb.RESULTS TQHXD significantly reduced the neurological defect scores.Histological examination indicated that dense neuropil and largely surviving neurons had been seen in TQHXD-treated rats.TEM observation revealed that TQHXD could significantly inhibit the damage of hippocampal neurons and reduce the opening of TJ.The decreased protein expression levels of claudin-5,occludin,ZO-1 and the increased protein expression levels of AQP-4 and MMP-9in cerebral ischemia tissue were significantly prevented by treatment of TQHXD.Analysis of experimental results showed that muscone,ligustilide and hydroxysafflor yellow A could penetrate the BBB into the CSF,and the content of the model group was lower than that of sham group after intragastric administration of TQHXD.CONCLUSION These results demonstrated that TQHXD may act as a potential neuroprotective agent against BBB damage for cerebral ischemia through protecting of hippocampus neurons,reducing the opening of TJ and decreasing the permeability of BBB by up-regulating ZO-1,occludin,claudin-5 expressions,down-regulating AQP-4 and MMP-9 expressions.The effect of TQHXD on the decrease of the opening of TJ also reduced the content of muscone,ligustilide and hydroxysafflor yellow A in cerebrospinal fluid.

Shu-Gan-Liang-Xue Decoction Simultaneously Down-regulates Expressions of Aromatase and Steroid Sulfatase in Estrogen Receptor Positive Breast Cancer Cells

Objective：Estradiol （E2） plays an important role in the development of breast cancer.In postmenopausal women,the estrogen can be synthesized via aromatase （CYP19） pathway and steroid-sulfatase （STS） pathway in peripheral tissues,when the production in ovary has ceased.The objective of our study was to explore the effects of Shu-Gan-Liang-Xue Decoction （SGLXD） on the expressions of CYP19 and STS in estrogen receptor positive breast cancer MCF-7 and T47D cells.Methods：The effects of SGLXD on the cell viability of MCF-7 and T47D were analyzed by MTT assay.By quantitative real-time RT-PCR and Western blot,we evaluated the mRNA and protein expressions of CYP19 and STS in MCF-7 and T47D cells after SGLXD treatment.Results：By MTT assay,the cell viability rates of MCF-7 and T47D were significantly inhibited by SGLXD in a dose-dependent manner,the IC50 values were 40.07 mg/ml for MCF-7 cells and 25.62 mg/ml for T47D cells,respectively.As evidenced by real-time PCR and Western blot,the high concentrations of SGLXD significantly down-regulated the expressions of CYP19 and STS both in the transcript level and the protein level.Conclusion：The results suggest that SGLXD is a potential dual aromatase-sulfatase inhibitor by simultaneously down-regulating the expressions of CYP19 and STS in MCF-7 and T47D cells.

Prof.Sheng Canruo's Experience in Acupuncture Treatment of Throat Diseases with Yan Si Xue

Yan Si Xue(咽四穴)refer to four points in the throat summarized by Prof.Sheng Canruo in his long-year clinical experience based on the combination of TCM theory and the knowledge of modernmedical anatomy.By taking “Yan Si Xue” as main points,and other differential adjunct points,Prof.Sheng has obtained satisfactory therapeutic results in treating various throat diseases such ashoarseness,paralysis of vocal cord,dysphonia after radiotherapy on throat tumor,vocal nodules,disorder of the glossopharyngeal nerve,hysteric aphasia,and acute or chronic laryngopharyngitis.

Randomized controlled trial of Qing Gan Huo Xue Prescription in the treatment of alcoholic liver cirrhosis

Objective:To evaluate the efficacy of Qing Gan Huo Xue Prescription(QGHXP)in the treatment of patients with alcoholic liver cirrhosis(ALC)of damp and heat stasis syndrome.Methods:A total of 69 patients with ALC were randomly divided into TCM group(n=35)and control group(n=34).The TCM group was given QGHXP 1 pack TID orally.Control group received polyene phosphatidylcholine capsule 456 mg TID for 24 weeks.The observation measurements are symptom efficacy rate,serum level of liver enzyme,and non-invasive liver cirrhosis evaluation,including liver stiffness measurement(LSM)examininged by FibroTouch,APRI score,FIB-4 index and Maddrey discriminant function.Results:The symptom efficacy rate of the experimental group and the control group was 85.70%and 61.80%(P=0.024).Liver enzyme levels(serum ALP,γ-GT,AST and ALT)of TCM group were lower than those of control group(P<0.05).LSM of TCM group was reduced after treatment,and was significant lower than control group(14.19±1.49)vs.(15.06±1.24)(P<0.05).The APRI scores,FIB-4 index and Maddrey discriminant functions of TCM group were lower than those of control group(P<0.05).Conclusion:QGHXP is an effective alternative for the treatment of damp and heat stasis syndrome of ALC in improving liver function and clinical symptoms.

Healing Is Believing： Yeon Gaesomun and Xue Rengui in the Making of Mid-Seventh-Century Tang-Goguryeo War Narratives

This paper examines how historical narratives and fictional narratives treat China＇s loss in Tang-Goguryeo War differently to heal China＇s damaged pride. Emperor Tang Taizong （599-649） invaded Goguryeo in 645 but failed to conquer her because of severe weather and strong resistance led by Yeon Gaesomun （603-666）. This paper argues that official histories including Jiu Tangshu （Old Book of Tang） and Xin Tangshu （New Book of Tang） focus on Emperor Tang Taizhong＇s legitimacy to invade Goguryeo because Yeon Gaesomun＇s coup d＇etat overthrew Yeongnyu-wang. These two histories also pay extra attention to Yeon Gaesomun＇s negative characters. Novels about Tang-Goguryeo War including Xue Rengui zheng Liao shi lue （薛仁贵徵辽事略）, Tang shu zhi zhuan tong su yan yi （唐书志传通俗演义）, and Shuo Tang hou zhuan （说唐后传） take a different approach to heal China＇s wounded pride. Instead of focusing on diplomatic and military legitimacy, these stories blur China＇s loss by creating a national hero Xue Rengui whose military skills, loyalty to Tang Dynasty, and dauntless rescue of Emperor Tang Taizong were constantly emphasized.

Content Features of Medical Journal Zhong Xi Yi Xue Bao(《中西医学报》The International Medical Journal)during the Republican Period and Its Impact on Medicine

As a medical jourmal during the republican period,Zhong Xi Yi Xue Bao(《中西医学报》The International Medical Journal)was characterized by rich and popular content,wide range of know ledge,and better popularization.It had played an important role in spreading modem Western medicine and popularizing medical knowledge in China,promoted the development of modern Chinese medicine and its integration with Western medicine,thus provided essential research value and far-reaching influence for medical science.

A Brief Introduction of Yi Xue Shi (《医学史》 History of Medicine)

The book Yi Xue Shi(《医学史》History of Medicine)was written and edited by Cecilia Mettler and Fred Mettler couple,published in 1947.The book is about the literature research of systematic introduction to the history of medical development worldwide.The book provides a detailed description of the development of various medical disciplines and subjects through various documents and the authors and publication dates.Especially,Prof.Mettler has introduced the Chinese Yin and Yang(阴阳)and the five element theory(五行学说)and Shen Nung’s Materia Medica(神农本草)in this book.

XUE Huifeng Interviewed by Science Contributing Editor

XUE Huifeng,Editor in Chief of Aerospace China,accepted an interview by Mara Hvistendahl,a contributing editor of the journal Science on August30,2017,whereby he introduced the thought,theory and application of the Chinese school of systems engineering as well as the development of QIAN Xuesen think tank.The origin,foundation,

Xu Sanguan Mai Xue Ji and Chronicle of a Blood Merchant

Many of Yu Hua’s works have been translated into many languages and published abroad.They are famous for concise and precise language.His exploration in structure and narration and the creativity embodied in them also provide a lot of valuable references for literary critics.Xu Sanguan Mai Xue Ji is one of Yu Hua's representative works during his creative transformation.This paper is a brief introduction to Yu Hua's original works and English versions Chronicle of a Blood Merchant.the purpose of the paper is to introduce the two texts and lay the foundation for comparative analysis and critical analysis from the perspective of narratology.

A Comparative Study of Two English Versions of Jiang Xue Based on Functional Equivalence Theory

Chinese ancient poetry is artistically beautified with extraordinarily subtle artistic images, conceptions and rhythms.How well the translator knows and understands the linguistic and cultural differences between Chinese and English and the source poem in terms of its author, writing background and intended artistic conceptions, and what translating strategies the translator adopts will have a great impact on the translated version. Based on Nida's "functional equivalence" theory as the theoretical basis of the study, two different English versions of five-character jueju"Jiang Xue were chosen as the research objects, and studied from two perspectives, namely romantic charm including artistic images and conceptions and artistic form including language employed and rhythms to examine whether the two English versions have reproduced the source poem as it was. It was pointed out in the paper that achieving the functional equivalence between the source language poem and the translated version in terms of artistic images, language style and rhythm allows the possibility of the target language reader comprehending the translated version to the point that they can conceive of how the source language reader must have understood and appreciated the source poem.

Anne和她的6xue.com

6xue．com是一家年轻的公司，成立的时间不到半年。

The famous Chinese medicine doctor Xue Jing-Dong Taohong Siwu Decoction cured 1 case of primary liver cancer stage Ⅲa

Primary liver cancer is the most common malignant tumor of the liver.Surgery,intervention,radiotherapy,and chemotherapy are the main treatment methods in the early stage,and the basic principles of post-treatment are palliative treatment and symptomatic treatment.Xue Jing-Dong,a famous Chinese doctor,started from the etiology and pathogenesis of liver cancer,used the methods of promoting blood circulation to remove blood stasis,nourishing blood and replenishing liver,and applied Taohong Siwu Decoction based on long-term clinical experience to cure 1 case of primary liver cancer stage Ⅲa in two years.The patient’s survival period can be prolonged and the quality of life can be improved.The author begins with the diagnosis of stage Ⅲa liver cancer,western medicine treatment methods,and previous treatment experience of traditional Chinese medicine,and briefly describes the diagnosis and treatment of this patient.

YADISILISILK·XUE理念

从古至今,太多人对丝绸有着深刻的情结。温润晶莹、滑柔触感,萦绕不去的情怀,让丝绸在岁月华丽的枝头,幽深彻骨,风情万种。

互联网平台“12xue”在教学中的实践应用

信息时代互联网技术迅猛发展,极大影响和推进了教育信息化的进程。与此同时,"互联网+教育"也催生了不计其数、蓬勃发展的教育互联网平台。本文以学校与公司合作开发出适合学校实际的教育互联网平台"12xue"为例,从平台实现"4A"模式、平台助推学生全员参与学习、平台提供精准数据分析三方面讨论其在教育教学中的实践应用,旨在为互联网平台的推广使用提供借鉴。

Experimental investigation on the prevention of delayed cerebral vasospasm with Tong Qiao Huo Xue Tang

Objective To investigate the prevention effects and the physicochemical mechanisms of action of Tong Qiao Huo Xue Tang on delayed cerebral vasospasm(DCD) after subarachnoid hemorrhage(SAH).Methods Macaca cynomolgus were divided into two groups and underwent craniectomy,a semipermeable microdialysis catheter was placed adjacent to right middle cerebral artery (MCA).Therapeutic group were exposed to Tong Qiao Huo Xue Tang and control group to placebo via oral .Results The diameter of proximal MCA in therapeutic group changed slightly on 7th day after operation(P >0.05),whereas it decreased prominently(P< 0.05) in control group with severe vasospasm.OxyHb concentration:There’s no significant difference between the two groups on 2nd ～5th day(P >0.05),the concentration of therapeutic group(was zero after 8 days) was lower than that of control group (became zero after 12 days) on 6th ～8th day(P< 0.05).The peak value of therapeutic group (on 5th day) was lower than that of control group (on 7th day)(P< 0.05).Conclusion Tong Qiao Huo Xue Tang can prevent DCV after SAH effectively and decreasing OxyHb concentration around vessels after SAH maybe the mechanism.

针刺联合补肾活血方治疗骨质疏松性胸腰椎骨折的疗效观察及对骨代谢水平的影响

目的观察针刺联合补肾活血方治疗骨质疏松性胸腰椎压缩性骨折的临床疗效及对患者血清骨代谢指标的影响。方法选择108例骨质疏松性胸腰椎骨折患者,随机分为对照组和联合组,每组54例。两组均进行椎体后凸成形术治疗和常规护理,对照组口服补肾活血方治疗,联合组采用针刺联合口服补肾活血方治疗。比较两组疼痛缓解时间、下床活动时间和骨折愈合时间,观察两组治疗前和随访结束时疼痛数字评估表(numerical rating scale,NRS)评分、中国人骨质疏松症简明生存质量量表(Chinese osteoporosis quality of life short questionnaire,COQOL)评分和Oswestry功能障碍指数(Oswestry disability index,ODI)的变化,观察两组治疗前和随访结束时骨折椎体的椎形态及骨密度检测结果的变化,观察治疗前后两组血清高迁移率族蛋白-1(high mobility group protein-1,HMGB-1)、C-反应蛋白(C-reactive protein,CRP)、P物质(substance P,SP)、皮质醇(cortisol,Cor)、骨形态发生蛋白-7(bone morphogenetic protein-7,BMP-7)、骨钙素N端中分子片段(osteocalcin n-terminal molecular fragment,N-MID)、网膜素-1(omentin-1)、Ⅰ型胶原C端肽(typeⅠcollagen C-terminal peptide,CTX-1)水平的变化,比较两组临床疗效。结果联合组疼痛缓解时间、下床活动时间和骨折愈合时间短于对照组(P<0.05),联合组治疗后HMGB-1、CRP、SP、Corh和CTX-1水平以及随访结束时伤椎楔变角、Cobb角、ODI评分、NRS评分和COQOL评分均低于对照组(P<0.05),联合组治疗后N-MID、Omentin-1和BMP-7水平以及随访结束时骨折椎体椎前缘高度和BMD水平高于对照组(P<0.05)。联合组总有效率高于对照组(P<0.05)。结论在椎体后凸成形术治疗和常规护理基础上,针刺联合补肾活血方治疗骨质疏松性胸腰椎骨折可减少炎症反应和应激反应,降低疼痛介质指标水平,改善骨性标志物及骨代谢水平,促进椎体愈合,提高腰椎功能、临床疗效及生活质量。

血栓心脉宁片通过调控TGF-β_(1)和Runx2表达抑制血管平滑肌细胞钙化的研究

目的探讨血栓心脉宁片是否可通过调控转化生长因子β_(1)(TGF-β_(1))和Runt相关转录因子2(Runx2)表达抑制血管平滑肌细胞的钙化。方法取对数生长期大鼠血管平滑肌细胞,实验分为5组:阴性组细胞加入DMEM培养液培养;钙化组加入β-磷酸甘油(β-GP)作用24 h诱导血管平滑肌细胞钙化;血栓心脉宁低、中、高剂量组先分别加入125 mg/L、250 mg/L、500 mg/L的血栓心脉宁片培养24 h后再给予β-GP作用24 h。采用CCK-8法检测各组细胞活力,酶标仪检测各组细胞中钙含量、碱性磷酸酶(ALP)活性及TGF-β_(1)含量,Western blot法检测细胞中Runx2蛋白表达情况。结果与阴性组比较,钙化组细胞活力明显下降(P<0.05),细胞中钙含量、ALP活性、TGF-β_(1)含量及Runx2蛋白相对表达量均明显升高(P均<0.05);与钙化组比较,血栓心脉宁各组细胞活力均明显提高(P均<0.05),细胞中钙含量、ALP活性、TGF-β_(1)含量及Runx2蛋白相对表达量均明显降低(P均<0.05),且各指标均呈浓度依赖性变化。结论血栓心脉宁片可能通过调控TGF-β_(1)和Runx2的表达,抑制大鼠血管平滑肌细胞的钙化。

韩雪教授分症论治儿童抽动障碍经验

总结韩雪教授治疗儿童抽动障碍(Tic disorder,TD)的临证经验。认为儿童TD以脏腑失和,肝失条达,内风妄动为总病机。TD临床病症多变,提出分症论治的观点,将TD常见的五类临床症状及共患病进行分类辨治,以小柴胡汤为基础方,并根据不同症状的病机特点与半夏厚朴汤、葛根汤、麻黄附子细辛汤、苓桂术甘汤、防己地黄汤、柴胡加龙骨牡蛎汤、四逆散合方组方施药。并附验案1则,以资佐证。

面向海南自贸港建设的MTA人才“双跨融合”培养模式研究

发展专业学位研究生教育是主动服务创新型国家建设,为国家区域发展战略提供高层次应用型人才支撑的重要路径。海南省旅游管理硕士专业学位(以下简称“MTA”)人才培养应和海南自由贸易港“三区一中心”的重大战略同频共振,分类分层次培养具有地域化特色明显、专业能力与实践能力强、跨界融合与跨文化融合特性突出、能够创造性从事海南自由贸易港建设实际工作的高级应用型人才。针对海南省MTA人才培养中现存的问题,构建MTA双跨融合教育共同体,提出共育自贸港特色专业群、共建跨界融通课程体系、共享专业师资团队、共创生产实践平台、共筑分类分层次培养计划等MTA人才培养创新路径,实现教育链、人才链、产业链、创新链之间的有机融合。