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1Adult neural stem cells in the mammalian central nervous system显示文摘神经干细胞(NSC ) 不仅在胚胎的发展期间而且在所有哺乳动物的种类的成年大脑是在场的,包括人。在 vivo 的干细胞壁龛建筑学使成年 NSC 能连续地在整个生活在特定的大脑区域产生功能的神经原。成年神经发生过程服从于动态规定由各种各样生理,病理学并且药理学刺激。Multipotent 成年 NSC 也看起来内在地塑料,对基因编程顺从在正常区别期间,并且到 epigenetic reprograming 在进 pluripotency 的 de 区别期间。增加的证据建议成年 NSC 显著地在生理、病理学的条件下面贡献专业化神经功能。充分理解成年 NSC 的生物学将提供关键卓见进病原学和主要大脑混乱的潜在的治疗学的干预。这里,我们在哺乳动物的中央神经系统的成年 NSC 上考察最近的进步,包括他们在癌症和再生药的身份,壁龛,功能,粘性,和新兴的角色上的话题。Dengke K Ma 2009Cell Research2009,19,6:35
2The First Imported Case of Monkeypox in the Mainland of China—Chongqing Municipality,China,September 16,2022显示文摘Monkeypox is a zoonotic viral disease caused by the monkeypox virus(MPXV),and historically,all outbreaks have been linked to Africa;however,monkeypox has been posing an alarming challenge to the world in 2022(1)as approximately 60,000 cases have been reported in more than 100 nations and regions worldwide(2).Currently,many cases of monkeypox were identified in many nonendemic countries outside of Central and West Africa,and human-to-human transmission has occurred frequently,especially among men who have sex with men(MSM)presenting new clinical symptoms similar to syphilis and other sexually transmitted infections(3).Hua Zhao Wenling Wang Li Zhao Sheng Ye Jingdong Song Roujian Lu Hua Zong Changcheng Wu Wei Huang Baoying Huang Yao Deng Ruhan A Wujuan Xie Li Qi Wenbo Xu Hua Ling Wenjie Tan 2022China CDC weekly2022,4,38:35
3血压变异性与脑小血管病:人群队列的系统回顾和荟萃分析显示文摘脑小血管疾病(cerebral small vessel disease,CSVD)是一种常见的、具有破坏性的亚临床疾病,对卒中和痴呆都有重要影响。血压的变异性可能会增加卒中和痴呆的风险,但血压变异性是否与CSVD有关尚无定论。该研究针对前瞻性队列研究进行了系统回顾和荟萃分析,这些研究考察了血压变异性与CSVD标志物(包括磁共振成像上的白质高信号、腔隙和微出血)的存在或进展之间的关系。该研究搜索了Medline、Embase和Web of Science三大数据库。筛选出10项研究符合综合定性标准,并有7项研究可纳入荟萃分析。这些研究共包括2796例年龄为(74±4)岁的患者,平均随访时间为4.0年。经统计学分析,收缩期血压变异性与白质高信号存在或进展的概率增加相关,约增加1个标准差[优势比1.26(95%CI:1.06~1.50)]。而收缩压血压变异性与腔隙的存在[优势比0.93(95%CI:0.74~1.16)]和微出血的存在[优势比1.13(95%CI:0.89~1.44)]之间的相关性没有统计学意义。结果证明,大的血压变异性与更高的脑白质高信号(WMH)负担相关,这可能为探究卒中和痴呆的早期诱因提供重要的支持。二者的因果关系,则需要未来的纵向研究进行探究。如果观察到因果关系是成立的,则表明通过保持稳定的血压,可以很大程度上预防CSVD,从而预防卒中和痴呆。Ma Y Song A Viswanathan A 李铁梅(编译) 2020中华医学杂志2020,100,43:32
4The p53-induced lincRNA-p21 derails somatic cell reprogramming by sustaining H3K9me3 and CpG methylation at pluripotency gene promoters显示文摘最近的研究在众多的生物过程增加了我们长 noncoding RNA (lncRNAs ) 的理解,但是很少在体的房间 reprogramming 检验了他们的角色。通过表示介绍并且功能的屏蔽,我们鉴别了大 intergenic noncoding RNA p21 (lincRNA-p21 ) 损害 reprogramming。尤其是, lincRNA-p21 被 p53 导致,但是不在 reprogramming 支持 apoptosis 或房间老朽。相反, lincRNA-p21 与 H3K9 methyltransferase SETDB1 和维护 DNA methyltransferase DNMT1 联系,它被 RNA 有约束力的蛋白质 HNRNPK 便于。因而, lincRNA-p21 由在 pluripotency 基因倡导者支撑 H3K9me3 或 CpG methylation 阻止 reprogramming。我们的结果在 reprogramming 提供卓见进 lncRNAs 的角色并且建立在 p53 和 heterochromatin 规定之间的一个新奇连接。Xichen Bao Haitao Wu Xihua Zhu Xiangpeng Guo Andrew P Hutchins Zhiwei Luo Hong Song Yongqiang Chen Keyu Lai Menghui Yin Lingxiao Xu Liang Zhou Jiekai Chen Dongye Wang Baoming Qin Jon Frampton Hung-Fat Tse Duanqing Pei Huating Wang Biliang Zhang Miguel A Esteban 2015Cell Research2015,25,1:21
5Potential Toxicological and Cardiopulmonary Effects of PM2,5 Exposure and Related Mortality:Findings of Recent Studies Published during 2003-2013显示文摘INTRODUCTION Air pollution has become a serious environmental issue owing to its diverse harmful effects on the physical and biological environment.According to the Environmental Protection Agency(EPA)and the World Health Organization(WHO)[1-2],air pollution affects millions of people worldwide.Hundreds of thousands of deaths each year and a range of diseases,Mohammed O.A.Mohammed SONG Wei Wei MA Wan Li LI Wen Long LI Yi Fan Afed Ullah Khan Mohammed A.E.M.Ibrahim Osman Adam Maarouf Alshebli A Ahmed John J.Ambuchi 2016Biomedical and Environmental Sciences2016,29,1:16
6Motion behavior of particles in air-solid magnetically stabilized fluidized beds for separation显示文摘In order to study the settling mechanism of particles in an air-solid magnetically stabilized fluidized bed(MSFB) for separation,we carried out free settling and quasi-zero settling tests on the tracing particles.The results show that the main resistance forces as the tracing particles settled in an air-solid MSFB were motion resistance force and yield force.The motion resistance and yield forces greatly hindered the free settling of the particles by greatly decreasing the acceleration for settling process of the particles.The acceleration decreased from 3022.62 cm/s 2 to zero in 0.1 s,and in the end,the particles stopped in the air-solid MSFB.The yield force on particles increased with increasing the magnetic field intensity,resulting in decrease of the quasi-zero settling displacement.However,the yield force on particles decreased with increasing the fluidized air velocity,leading to increase of the quasi-zero settling displacement.When the structure and operating parameters of the air-solid MSFB were set up,the yield stress on particles stopped in an air-solid MSFB was a function of diameter and density of particles.The settling displacements of equal diameter particles increased with increasing their densities,and the settling displacements of equal density particles increased with increasing their diameters.Song Shulei a,,Zhao Yuemin a,Luo Zhenfu a,Tang Ligang b a School of Chemical Engineering and Technology,China University of Mining & Technology,Xuzhou 221116,China b Coal Mining and Designing Department,Tiandi Science & Technology Company Co.Ltd.,Beijing 100013,China 2012International Journal of Mining Science and Technology2012,22,5:13
7Eleven COVID-19 Outbreaks with Local Transmissions Caused by the Imported SARS-CoV-2 Delta VOC-China,July-August,2021显示文摘Starting from December 2019,Wuhan,China,encountered the first outbreak of coronavirus disease 2019(COVID-19)(1-2).The epidemic was successfully suppressed by strict containment so that the number of infected people was reduced to 0 on April 8,2020(3–4).After that,China experienced roughly 3 dozen outbreaks with local transmission caused by imported severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Lei Zhou Kai Nie Hongting Zhao Xiang Zhao Bixiong Ye Ji Wang Cao Chen Hong Wang Jiangli Di Jinsong Li Chao Li Zhixiao Chen Ruiqi Ren Peihua Niu Hui Chen Tao Chen Yali Wang Lili Li Bingxue Han Ruhan A Si Chen Dan Li Dan Li Chunxia Jin Xin Zhang Jiangmei Liu Chunyu Xu Yecheng Yao Yenan Feng Zhili Li Bike Zhang Yang Song Peter Hao Yanping Zhang Hao Li Qun Li George F.Gao Guoqing Shi Wenbo Xu 2021China CDC weekly2021,3,41:13
8Gastrin,somatostatin,and experimental disturbance of the gastrointestinal tract in rats显示文摘INTRODUCTIONThe field of gastrointestinal hormones has expanded at a dizzying rate[1-4].Gastrointestinal hormones as regulatory peptides that appear to be major components of bodily integration and have important regulatory actions on physioligical function of the gastrointestinal tract .The successful isolation of some gastrointestinal hormones and the development of sensitive methods for their detection have led to the unexpected finding that they also exist in the brain .Yong Li Yao~1 Bo Xu~2 Wan Dai Zhang~1 Yu Gang Song~1 ~1Institute of Gastrointestinal Diseases,Nanfang Hospital,First Military Medical University,Guangzhou 510515,Guangdong Province,China ~2Department of Orthopedics Nanfang Hospital,First Military Medical University,Guangzhou 510515,Guangdong Province,ChinaYong Li Yao graduated from First Military Mcdical University with a master degree in 1998.She now works in the Institute of Gastrointestinal Diseases,Nanfang Hospital as a doctoral candidate majoring gastrointestinal diseases and gastrointestinal hormones,she has published 8 papers. 2001World Journal of Gastroenterology2001,7,3:12
9Medical management of gastric cancer:A 2014 update显示文摘Gastric cancer represents a serious health problem on a global scale. It is the second leading cause of cancer-related death worldwide. Novel therapeutic targets are desperately needed because the meager improvement in the cure rate of about 10% realized by adjunctive treatments to surgery is unacceptable as > 50% patients with localized gastric cancer succumb to their disease. Either postoperative chemoradiotherapy(United States),pre-and post-operative chemotherapy(Europe),and adjuvant chemotherapy after a D2 resection(Asia) can all be regarded as standards of care in the localized gastric cancer management. In metastatic disease the addition of trastuzumab to chemotherapy is standard of care in Her2 positive disease. In the HER2 negative population,the treatments remain limited.In the first line setting,the standard of care is a combination of fluoropyrimidine and platinum containing chemotherapy,with or without epirubicin or docetaxel.The results of targeted therapy trials have by and large been disappointing,but none of these trials looked at an appropriately enriched population.Finally there is a meager overall survival benefit in treating patients with metastatic disease in the second line setting,with either irinotecan,docetaxel or ramucirumab however none of these drugs have been compared head to head in a well-powered randomized controlled trial.Elena Elimova Hironori Shiozaki Roopma Wadhwa Kazuki Sudo Qiongrong Chen Jeannelyn S Estrella Mariela A Blum Brian Badgwell Prajnan Das Shumei Song Jaffer A Ajani 2014World Journal of Gastroenterology2014,20,38:10
10Mi R-122 in hepatitis B virus and hepatitis C virus dual infection显示文摘Hepatitis B virus(HBV) and hepatitis C virus(HCV) infections are the most common causes of chronic liver diseases and hepatocelluar carcinomas. Over the past few years, the liver-enriched micro RNA-122(mi R-122) has been shown to differentially regulate viral replication of HBV and HCV. It is notable that thelevel of mi R-122 is positively and negatively regulated by HCV and HBV, respectively. Consistent with the welldocumented phenomenon that mi R-122 promotes HCV accumulation, inhibition of mi R-122 has been shown as an effective therapy for the treatment of HCV infection in both chimpanzees and humans. On the other hand, mi R-122 is also known to block HBV replication, and HBV has recently been shown to inhibit mi R-122 expression; such a reciprocal inhibition between mi R-122 and HBV suggests an intriguing possibility that mi R-122 replacement may represent a potential therapy for treatment of HBV infection. As HBV and HCV have shared transmission routes, dual infection is not an uncommon scenario, which is associated with more advanced liver disease than either HBV or HCV mono-infection. Thus, there is a clear need to further understand the interaction between HBV and HCV and to delineate the role of mi R-122 in HBV/HCV dual infection in order to devise effective therapy. This review summarizes the current understanding of HBV/HCV dual infection, focusing on the pathobiological role and therapeutic potential of mi R-122.Kyoungsub Song Chang Han Srikanta Dash Luis A Balart Tong Wu 2015World Journal of Hepatology2015,7,3:6
11Ruthenium(Ⅲ) chloride as an efficient catalyst for the synthesis of perimidine derivatives under mild conditions显示文摘Various biologically important perimidine derivatives have been synthesized efficiently from various ketones and naphthalene- 1,8-diamine by using a catalytic amount of RuCl3(1 mol%).This method is a very simple and high yielding reaction for the synthesis of perimidine derivatives.Jing Zhang~a Song Lin Zhang~(a,b,*) Jun Min Zhang~a a Key Laboratory of Organic Synthesis of Jiangsu Province,College of Chemistry and Chemical Engineering,Dushu Lake Campus,Suzhou University,Suzhou 215123,China b College of Chemistry and Environmental Science,Henan Normal University,Xinxiang 453007,China 2007Chinese Chemical Letters2007,18,9:5
12基于智能手机应用的中国学龄儿童及其家庭成员减盐健康教育(AppSalt):平行、整群随机对照研究显示文摘目的探讨基于智能手机应用的健康教育能否降低学龄儿童及其家庭成员的盐摄入量。设计平行、整群随机对照试验,将学校随机分配到干预组或对照组(1∶1)。背景从2018年9月15日至2019年12月27日,在中国北部、中部和南部3个省份纳入54所小学。参与者592名小学3年级儿童[每所学校约11名儿童,其中308名(52.0%)男孩;平均年龄8.58岁(标准差0.41)],以及1184名成年家庭成员[其中551名(46.5%)男性;平均年龄45.80岁(12.87)]。干预在手机应用程序的支持下,对干预组中的儿童进行关于减盐的健康教育,并布置家庭作业,以带动全家参与减盐的相关活动。主要结局测量干预组和对照组在第12个月随访时盐摄入量(通过24小时尿钠排泄量测量)改变值的差值。结果基线调查后,来自27所学校的297名儿童和594名成年家庭成员被分配到干预组,另外27所学校的295名儿童和590名成年家庭成员被分配到对照组。在试验期间,由于儿童转到另一所学校或成年家庭成员无法参加随访评估,27名(4.6%)儿童和112名(9.5%)成年人失去随访。干预组其余287名儿童和546名成人,以及对照组的278名儿童和526名成人完成了12个月的随访评估。干预组儿童基线时的平均盐摄入量为5.5[标准差(SD)1.9]g/天,干预组成人10.0(SD 3.5)g/天,对照组儿童5.6(SD 2.1)g/天,成人10.0(SD 3.6)g/天。在研究期间,干预组和对照组儿童的盐摄入量均有所增加,但干预组增加的幅度较小[调整混杂偏倚变量后平均干预效果为-0.25 g/天,95%可信区间(CI):-0.61~0.12;P=0.18]。干预组和对照组成人的盐摄入量均有所下降,但干预组的盐摄入量变化更大(平均效果-0.82 g/天,-1.24~-0.40;P<0.001)。对儿童收缩压的平均效果为-0.76 mmHg(-2.37~0.86;P=0.36),成人为-1.64 mmHg(-3.01~-0.27;P=0.02)。结论采用儿童带动家长的方式,基于手机应用程序的健康教育可有效降低成人的盐摄入量和收缩压,但对儿童的效果并不显著。这种新颖的方法有可能被更大规模地推广,但在此之前方案需要进一步加强,才能减少包括学童在内的人群盐摄入量。试验注册中国临床试验注册ChiCTR1800017553。Feng J He 张普洪 骆蓉 李园 孙悦文 陈凤格 赵昱红 赵伟 李道西 陈航 吴田勇 周思远 刘宇 李贤 何静 Changqiong Wang Monique Tan Jing Song Graham A MacGregor 2022英国医学杂志中文版2022,25,9:5
13Copper Adsorption on Olivine显示文摘Copper adsorption on olivine supplied by the A/S Olivine Production Plant at Aheim in western Norway was studied. The factors were evaluated which affect the uptake of copper. It is shown that the equilibrium pH of aqueous solution has the greatest influence on copper adsorption thanks to the competitive adsorption between proton and copper ions, and the adsorption of copper to olivine increases rapidly with pH increasing from 4 to 6. Moreover, initial copper concentration and olivine dose possess significant effect on copper adsorption, for the adsorption rate of copper increases with olivine dose increasing or initial copper concentration decreasing at the same pH. In addition, the ionic strength effect on the adsorption was also investigated, but it owns little effect on the adsorption process of copper due to the formation of inner sphere adsorption of copper on olivine. The experimental data show that olivine has a high acid buffer capacity and is an effective adsorbent for copper.Lei Shao, Rolf A. Kleiv, Kunt L. Sandvik, Cunyi Song, Shouci Lu ( Resources Engineering School, University of Science and Technology Beijing, Beijing 100083, China Department of Geology and Mineral Resources Engineering, Norwegian University of Science a 2000International Journal of Minerals,Metallurgy and Materials2000,14,4:5
14Effects of grazing intensity on seed production of Caragana stenophylla along a climatic aridity gradient in the Inner Mongolia Steppe,China显示文摘As the increases of climatic aridity and grazing intensity,shrubs play an increasingly important role in grassland ecosystem in arid and semi-arid regions,and its abundance also generally increases.However,the effects of climatic aridity and grazing intensity on sexual reproduction of shrubs in grassland remain largely unclear.In order to understand the effects of grazing intensity and climatic drought stress,and their interaction on seed production of shrub species,we examined the seed number,seed weight and seed yield of Caragana stenophylla under three grazing intensities(fenced,mild grazing and severe grazing) across a climatic aridity gradient(semi-arid,arid,very arid and intensively arid zones) in the Inner Mongolia Steppe,northern China during 2012–2013.The seed number,seed weight and seed yield gradually increased from the semi-arid to the very arid zones,but decreased from the very arid to the intensively arid zones in fenced plots.The seed number and seed yield decreased from the semi-arid to the intensively arid zones in mild and severe grazing treatment plots,therefore,grazing enhanced the suppression effect of climatic aridity on seed production of C.stenophylla.The seed number and seed yield gradually decreased as grazing intensity increased.The seed weight was highest in severe grazing plots,followed by the mild grazing plots and then the fenced plots.Precipitation varied interannually during the study period.We observed that the seed number,seed weight and seed yield were lower in the low precipitation year(2013) than in the high precipitation year(2012).As climatic drought stress increased,the negative effects of grazing on seed production of C.stenophylla also gradually increased.Our results indicated that climatic drought stress may contribute to the encroachment of C.stenophylla shrub in arid zones by promoting its seed production.However,grazing had negative effects on sexual reproduction of C.stenophylla,and the combined effects of drought stress and grazing seriously suppressed sexual reproduction of C.stenophylla in the intensively arid zone.XIE Lina CHEN Weizhong Christopher A GABLER HAN Lei GUO Hongyu CHEN Qing MA Chengcang GU Song 2016Journal of Arid Land2016,8,6:5
15Uterine biology in pigs and sheep显示文摘There is a dialogue between the developing conceptus (embryo-fetus and associated placental membranes) and maternal uterus which must be established during the peri-implantation period for pregnancy recognition signaling, implantation, regulation of gene expression by uterine epithelial and stromal cells, placentation and exchange of nutrients and gases. The uterus provide a microenvironment in which molecules secreted by uterine epithelia or transported into the uterine lumen represent histotroph required for growth and development of the conceptus and receptivity of the uterus to implantation. Pregnancy recognition signaling mechanisms sustain the functional lifespan of the corpora lutea (CL) which produce progesterone, the hormone of pregnancy essential for uterine functions that support implantation and placentation required for a successful outcome of pregnancy. It is within the peri-implantation period that most embryonic deaths occur due to deficiencies attributed to uterine functions or failure of the conceptus to develop appropriately, signal pregnancy recognition and/or undergo implantation and placentation. With proper placentation, the fetal fluids and fetal membranes each have unique functions to ensure hematotrophic and histotrophic nutrition in support of growth and development of the fetus. The endocrine status of the pregnant female and her nutritional status are critical for successful establishment and maintenance of pregnancy. This review addresses the complexity of key mechanisms that are characteristic of successful reproduction in sheep and pigs and gaps in knowledge that must be the subject of research in order to enhance fertility and reproductive health of livestock species.Fuller W Bazer Gwonhwa Song Jinyoung Kim Kathrin A Dunlap Michael Carey Satterfield Gregory A Johnson Robert C Burghardt Guoyao Wu 2012Journal of Animal Science and Biotechnology2012,3,3:3
16Response characteristics of an ascending auditory neuron AN3 and its projections in the brain of the bushcricket Gampsocleis grationsa显示文摘The phonotaxis of bushcrickets demonstrates that they have goodcapability of recognizing conspecific songs and locating the sound source,which bases on complicated auditory mechanisms of the central nervoussystem(CNS).This article describes the response characteristics of AN3,an auditory ascending neuron in the prothoracic ganglion,and its projec-tions within the brain.The AN3,with a quasi-tonic discharge pattern,has high sensitivity,directionality and ability to encode sound intensity.Therefore,it plays an important role in auditory information processingof CNS.Its projections in the brain are mainly concentrated in the lateralzone of the deutencephalon,where synaptically connecting local auditoryinterneurons in the brain.GAO Panpan and SHEN Jun -Xian(Institute of Biophysics, Academia Sinica, Beijing 100080)The phonotaxis of bushcrickets demonstrates that they have good capability of recognizing conspecific songs and locating the sound source, which bases on complicated auditory mechanisms of the central nervous system (CNS). This article describes the response characteristics of AN3, an auditory ascending neuron in the prothoracic ganglion, and its projections within the brain. The AN3 , with a quasi-tonic discharge pattern, has high sensitivity, directionality and ability to encode sound intensity. Therefore, it plays an important role in auditory information processing of CNS. Its projections in the brain are mainly concentrated in the lateral zone of the deutencephalon, where synaptically connecting local auditory interneurons in the brain. 1992Chinese Journal of Acoustics1992,11,1:3
17Effects of Microtubule Polymerization Inhibitor on the Hypersensitive Response of Wheat Induced by the Non-Host Pathogen Sphaerotheca fuliginea显示文摘The plant cytoskeleton is a highly dynamic and versatile intracellular scaffold composed of microtubules and microfilaments, serving a multiplicity of functions in plant cells. To reveal the relationship between the cytoskeleton in wheat (Triticum aestivum L.) cv. Suwon 11 attacked by the non-host pathogen Sphaerotheca fuliginea and the initiation of the hypersensitive response, the microtubule inhibitor oryzalin was injected into the wheat leaves immediately prior to inoculation. The incidence of hypersensitive cell death was significantly lower than that in water-treated control. In addition, the occurrence of hypersensitive cell death was also delayed and S. fuliginea was able to penetrate and form haustoria in epidermal tissues of wheat. All the results above indicated that hypersensitive cell death was associated with depolymerisation of microtubules, suggesting that microtubules might play an important role in the expression of non-host resistance of wheat.LI Hong-li, WANG Hai-yan, HAO Xin-yuan, SONG Xiao-he and MA Qing College of Plant Protection and Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University/Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Yangling 712100, P.R.China 2010Agricultural Sciences in China2010,9,3:3
18A 10-miRNA risk score-based prediction model for pathological complete response to neoadjuvant chemotherapy in hormone receptor-positive breast cancer显示文摘Patients with hormone receptor(HR)-positive tumors breast cancer usually experience a relatively low pathological complete response(p CR)to neoadjuvant chemotherapy(NAC).Here,we derived a 10-micro RNA risk score(10-mi RNA RS)-based model with better performance in the prediction of p CR and validated its relation with the disease-free survival(DFS)in 755 HRpositive breast cancer patients(273,265,and 217 in the training,internal,and external validation sets,respectively).This model,presented as a nomogram,included four parameters:the 10-mi RNA RS found in our previous study,progesterone receptor(PR),human epidermal growth factor receptor 2(HER2)status,and volume transfer constant(K).Favorable calibration and discrimination of 10-mi RNA RS-based model with areas under the curve(AUC)of 0.865,0.811,and 0.804 were shown in the training,internal,and external validation sets,respectively.Patients who have higher nomogram score(>92.2)with NAC treatment would have longer DFS(hazard ratio=0.57;95%CI:0.39–0.83;P=0.004).In summary,our data showed the 10-mi RNA RS-based model could precisely identify more patients who can attain p CR to NAC,which may help clinicians formulate the personalized initial treatment strategy and consequently achieves better clinical prognosis for patients with HRpositive breast cancer.Chang Gong Ziliang Cheng Yaping Yang Jun Shen Yingying Zhu Li Ling Wanyi Lin Zhigang Yu Zhihua Li Weige Tan Chushan Zheng Wenbo Zheng Jiajie Zhong Xiang Zhang Yunjie Zeng Qiang Liu RStephanie Huang Andrzej LKomorowski Eddy SYang François Bertucci Francesco Ricci Armando Orlandi Gianluca Franceschini Kazuaki Takabe Suzanne Klimberg Naohiro Ishii Angela Toss Mona PTan Mathew A Cherian Erwei Song 2022Science China(Life Sciences)2022,65,11:3
19Numerical simulation of pore-scale flow in chemical flooding process显示文摘Chemical flooding is one of the effective technologies to increase oil recovery of petroleum reservoirs after water flooding.Above the scale of representative elementary volume(REV), phenomenological modeling and numerical simulations of chemical flooding have been reported in literatures,but the studies alike are rarely conducted at the pore-scale,at which the effects of physicochemical hydrodynamics are hardly resolved either by experimental observations or by traditional continuum-based simulations.In...Xiaobo Li,~(1,a) Shuhong Wu,~1 Jie Song,~1 Hua Li,~1 and Shuping Wang~2 1.Research Institute of Petroleum Exploration & Development of Petrochina,Beijing 100083,China 2)Petroleum Exploration & Production Research Institute of Sinopec,Beijing 100083,China 2011Theoretical & Applied Mechanics Letters2011,1,2:3
20Terahertz Semiconductor Quantum Well Devices显示文摘For eventually providing terahertz science with compact and convenient devices,terahertz (1~10THz) quantum-well photodetectors and quantum-cascade lasers are investigated.The design and projected detector performance are presented together with experimental results for several test devices,all working at photon energies below and around optical phonons.Background limited infrared performance (BLIP) operations are observed for all samples (three in total),designed for different wavelengths.BLIP temperatures of 17,13,and 12K are achieved for peak detection frequencies of 9.7THz(31μm),5.4THz(56μm),and 3.2THz(93μm),respectively.A set of THz quantum-cascade lasers with identical device parameters except for doping concentration is studied.The δ-doping density for each period varies from 3.2×1010 to 4.8×1010cm-2.We observe that the lasing threshold current density increases monotonically with doping concentration.Moreover,the measurements for devices with different cavity lengths provide evidence that the free carrier absorption causes the waveguide loss also to increase monotonically.Interestingly the observed maximum lasing temperature is best at a doping density of 3.6×1010cm-2.Liu H C Luo H Ban D Waichter M Song C Y Wasilewski Z R Buchanan M Aers G C SpringThorpe A J Cao J C Feng S L Williams B S Hu Q 2006Journal of Semiconductors2006,27,4:2
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