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| 1 | Mettl3-/Mettl14-mediated mRNA N6-methyladenosine modulates murine spermatogenesis显示文摘精子发生在双 spermatogonial 干细胞(SSC ) 哪个生产 haploid 精子期间是一个区别过程。这个高度专业化的过程精确在 transcriptional, posttranscriptional,和翻译层次被控制。这里,我们报导那 N 6-methyladenosine (m 6 一) ,调整基因表示的一个 epitranscriptomic 标记,在精子发生期间起必要作用。我们现在的全面 m 6 从五个发展阶段的老鼠 spermatogenic 房间的 mRNA methylomes:无差别的 spermatogonia,类型 A 1 spermatogonia, preleptotene spermatocytes, pachytene/diplotene spermatocytes,和圆 spermatids。m 6 有 Vasa-Cre 的 RNA methyltransferase Mettl3 或 Mettl14 引起 m 6 SSC 的 A 和弄空。m 6 为 SSC 增长 / 区别被要求的抄本的一个弄空 dysregulates 翻译。在有 Stra8-GFPCre 的先进细菌房间的 Mettl3 和 Mettl14 的联合删除破坏精子形式,而有在先进细菌房间的 Mettl3 或 Mettl14 的单个删除的老鼠显示出正常精子发生。从双异种老鼠展览的 spermatids 损害了为精子形式是必要的 haploid 特定的基因的翻译。这研究加亮 mRNA m 6 在 germline 开发的修正,潜在地保证在精子发生的不同阶段协调了翻译。 | Zhen Lin Phillip J Hsu Xudong Xing Jianhuo Fang Zhike Lu Qin Zou Ke-Jia Zhang Xiao Zhang Yuchuan Zhou Teng Zhang Youcheng Zhang Wanlu Song Guifang Jia Xuerui Yang Chuan He Ming-Han Tong | 2017 | Cell Research2017,27,10: | 61 |
| 2 | Efficacy and safety of a novel anti-HER2 therapeutic antibody RC48 in patients with HER2-overexpressing,locally advanced or metastatic gastric or gastroesophageal junction cancer:a single-arm phase II study显示文摘Background:Current treatment options for human epidermal growth factor receptor 2(HER2)-overexpressing gastric cancer at third-line have shown limited clinical benefit.Further,there is no specific treatment for HER2 immunohistochemistry(IHC)2+and fluorescence in-situ hybridization-negative patients.Here,we report the efficacy and safety of a novel anti-HER2 antibody RC48 for patients with HER2-overexpressing,advanced gastric or gastroesophageal junction cancer.Methods:Patients with HER2-overexpressing(IHC 2+or 3+),locally advanced or metastatic gastric or gastroesophageal junction cancer who were under at least second-line therapy were eligible and received RC482.5 mg/kg alone every 2 weeks.The primary endpoint was the objective response rate(ORR)assessed by an independent review committee.Secondary endpoints included progressionfree survival(PFS),overall survival(OS),duration of response,time to progression,disease control rate,and safety.Results:Of 179 patients screened,125 were eligible and received RC48 treatment.The ORR was 24.8%(95%confidence interval[CI]:17.5%-33.3%).The median PFS and OS were 4.1 months(95%CI:3.7-4.9 months)and 7.9 months(95%CI:6.7-9.9 months),respectively.The most frequently reported adverse events were decreased white blood cell count(53.6%),asthenia(53.6%),hair loss(53.6%),decreased neutrophil count(52.0%),anemia(49.6%),and increased aspartate aminotransferase level(43.2%).Serious adverse events(SAEs)occurred in 45(36.0%)patients,and RC48-related SAEs were mainly decreased neutrophil count(3.2%).Seven patients had adverse events that led to death were not RC48-related.Conclusions:RC48 showed promising activity with manageable safety,suggesting potential application in patients with HER2-overexpressing,advanced gastric or gastroesophageal junction cancer who have previously received at least two lines of chemotherapy. | Zhi Peng Tianshu Liu Jia Wei Airong Wang Yifu He Liuzhong Yang Xizhi Zhang Nanfeng Fan Suxia Luo Zhen Li Kangsheng Gu Jianwei Lu Jianming Xu Qingxia Fan Ruihua Xu Liangming Zhang Enxiao Li Yuping Sun Guohua Yu Chunmei Bai Yong Liu Jiangzheng Zeng Jieer Ying Xinjun Liang Nong Xu Chao Gao Yongqian Shu Dong Ma Guanghai Dai Shengmian Li Ting Deng Yuehong Cui Jianmin Fang Yi Ba Lin Shen | 2021 | Cancer Communications2021,41,11: | 29 |
| 3 | Helicobacter pylori infection and diabetes:Is it a myth or fact?显示文摘Helicobacter pylori(H.pylori)is one of the most common human bacterial pathogens,and infection causes a wide array of gastric disorders,including simple gastritis,peptic ulcers and gastric malignancies.Gastrointestinal inflammation caused by H.pylori can influence the absorption of glucose and lipids,which are also abnormal in diabetes mellitus.Type 2 diabetes mellitus(T2DM),formerly known as non-insulin-dependent diabetes mellitus or adult-onset diabetes,is a metabolic disorder that is characterized by high levels of blood glucose resulting from insulin resistance and relative insulin deficiency.It is an emerging pandemic and is rapidly becoming a serious threat to public health.Emerging data now indicate a strong relationship between H.pylori infection and the incidence of T2DM.The mechanisms underlying the pathogenesis of diabetes are complex,involving insulin resistance,chronic inflammation,insulin secretion deficiency as a result of pancreasβ-cell dysfunction,glucotoxicity,and lipotoxicity.H.pylori infection is known to be involved in the pathogenesis of insulin resistance,and the growing awareness of its role in diabetes is important for the early detection of glucose dysregulation and prevention of T2DM in high-risk communities.This review probes the possible relationship between H.pylori and diabetes according to epidemiological surveys and discusses putative mechanisms underlying this correlation. | Cong He Zhen Yang Nong-Hua Lu | 2014 | World Journal of Gastroenterology2014,20,16: | 28 |
| 4 | Prevalence of Thyroid Nodules and Its Relationship with Iodine Status in Shanghai:a Population-based Study显示文摘Objective This study was designed to evaluate the prevalence of thyroid nodules(TNs) and its relationship with urine iodine concentrations(UICs) after the regional rapid economic growth and lifestyle changes. Methods A cross-sectional survey was conducted in the general population aged 15-69 years. A questionnaire regarding general and personal characteristics and relevant information was administered. Ultrasonography of the thyroid was performed, and serum triiodothyronine(T3), tetraiodothyronine(T4), serum thyroid stimulating hormone(TSH), free triiodothyronine(FT3), free tetraiodothyronine(FT4), thyroglobulin antibody(Tg Ab), thyroid peroxidase antibody(TPOAb), and TSH receptor antibody(TRAb) levels were measured for each individual subject. Results The prevalence rates of TNs in the whole population, females and males were 27.76%, 34.04%, and 21.60%, respectively. The prevalence of multiple nodules increased with age, whereas the prevalence peaks differed between males and females. The median UICs in the whole population and females with non-TNs were higher than those of subjects with TNs(P=0.0035, P=0.0068). The median UICs in subjects with a single TN were higher than those in subjects with multiple TNs(P=0.0164, P=0.0127). The result showed a U-shaped curve relationship between UIC and prevalence of TNs. The prevalence of TNs was the lowest when the UIC was 140-400 μg/L. Conclusion The prevalence of TNs was nearly 30% and increased with age. The relationship between UIC and prevalence of TNs is U-shaped, with an increase in risk when the UIC was <140 μg/L and >400 μg/L. Very low or high UIC levels need attention and correction. | SONG Jun ZOU Shu Rong GUO Chang Yi ZANG Jia Jie ZHU Zhen Ni MI Ming HUANG Cui Hua YU Hui Ting LU Xi RUAN Ye WU Fan | 2016 | Biomedical and Environmental Sciences2016,29,6: | 25 |
| 5 | Weighted Boundedness for a Class of Rough Multilinear Operators | Yong DING Shan Zhen LU Department of Mathematics,Beijing Normal University,Beijing 100875,P.R.China E-mail:dingy@bnu.edu.cn lusz@bnu.edn.cn | 2001 | Acta Mathematica Sinica,English Series2001,17,3: | 24 |
| 6 | Furazolidone-based triple and quadruple eradication therapy for Helicobacter pylori infection显示文摘AIM: To evaluate the efficacy of furazolidone-based triple and quadruple therapy in eradicating Helicobacter pylori(H. pylori) in a multi-center randomized controlled trial.METHODS: A total of 720 H. pylori positive patients with duodenal ulcer disease were enrolled at 10 different hospitals in Jiangxi province in China. The patients were randomly assigned to four treatment groups as follows: patients in Groups 1 and 3 received rabeprazole(10 mg), amoxicillin(1000 mg) and furazolidone(100 mg) twice daily for 7 and 10 d, respectively; patients in Groups 2 and 4 received rabeprazole(10 mg), bismuth(220 mg), amoxicillin(1000 mg) and furazolidone(100 mg) twice daily for 7 and 10 d, respectively. The primary outcome measure was H. pylori eradication rate 4 wk after treatment by intention-to-treat and per protocol analysis, while the secondary outcome measures were symptom and sign changes at the end of treatment and 4 wk after the end of treatment, as well as the proportion of patients who developed adverse events.RESULTS: The demographic data of the four groups were not significantly different. Overall, 666 patients completed the scheme and were re-assessed with the 13C-urea breath test. The intention-to-treat analysis of the H. pylori eradication rates in Groups 1, 2, 3 and 4 were 74.44%, 82.78%, 78.89% and 86.11%, respectively. The H. pylori eradication rate in Group 4 was significantly higher than that in Group 1. According tothe per protocol analysis, the H. pylori eradication rates in Groups 1, 2, 3 and 4 were 81.21%, 89.22%, 85.54% and 92.26%, respectively. The H. pylori eradication rate in Group 4 was significantly higher than that in Group 1. The number of adverse events was 15(8.3%), 16(8.9%), 15(8.3%) and 17(9.4%) in Groups 1, 2, 3 and 4, respectively, including dizziness, vomiting, diarrhea, nausea, skin rash, itchy skin, and malaise. The symptoms were relieved without special treatment in all of the patients.CONCLUSION: Both 7- and 10-d quadruple furazolidone-based therapies achieve satisfactory H. pylori eradication rates. | Yong Xie Yin Zhu Hong Zhou Zhi-Fa Lu Zhen Yang Xu Shu Xiao-Bai Guo Hui-Zhen Fan Jian-Hua Tang Xue-Ping Zeng Jian-Bo Wen Xiao-Qing Li Xing-Xing He Jiu-Hong Ma Dong-Sheng Liu Cai-Bin Huang Ning-Jian Xu Nong-Rong Wang Nong-Hua Lu | 2014 | World Journal of Gastroenterology2014,20,32: | 24 |
| 7 | Continuity of Higher Order Commutators on Certain Hardy Spaces | DING Yong LU Shan Zhen Department of Mathematics,Beijing Normal University,Beijing 100875.P.R.China E-mail:dingy@bnu.edu.cn lusz@bnu.edu.cnZHANG Pu Department of Mathematics.Zhejiang University(at Xixi Campus).Hangzhou 310028,P.R.China,E-mail:zhpjj@263,net | 2002 | Acta Mathematica Sinica,English Series2002,18,2: | 21 |
| 8 | Current status of diagnosis and treatment of bladder cancer in China-Analyses of Chinese Bladder Cancer Consortium database显示文摘Objective:To investigate current status of diagnosis and treatment of bladder cancer in China.Methods:A database was generated by Chinese Bladder Cancer Consortium(CBCC).From January 2007 to December 2012,14,260 cases from 44 CBCC centers were included.Data of diagnosis,treatment and pathology were collected.Results:The average age was 63.5 year-old and most patients were male(84.3%).The most common histologic types were urothelial carcinoma(91.4%),adenocarcinoma(1.8%),and squamous carcinoma(1.9%).According to 1973 and 2004 WHO grading system,42.0%,41.0%,and 17.0% of patients were grade 1,2,and 3,and 16.0%,48.7%,and 35.3% of patients were papillary urothelial neoplasms of low malignant potential,low,and high grade,respectively.Non-muscle invasive bladder cancer(NMIBC)and muscle invasive bladder cancer(MIBC)were 25.2% and 74.1%,respectively(0.8% not clear).Carcinoma in situ was only 2.4%.Most patients were diagnosed by white-light cystoscopy with biopsy(74.3%).Fluorescence and narrow band imaging cystoscopy had additional detection rate of 1.0% and 4.0%,respectively.Diagnostic transurethral resection(TUR)provided detection rate of 16.9%.Most NMIBCs were treated with TUR(89.2%).After initial TUR,2.6%accepted second TUR,and 45.7%,69.9%,and 58.7% accepted immediate,induced,and maintenance chemotherapy instillation,respectively.Most MIBCs were treated with radical cystectomy(RC,59.7%).Laparoscopic RCs were 35.1%,while open RC 63.4%.Extended and standard pelvic lymph node dissection were 7% and 66%,respectively.Three most common urinary diversions were orthotopic neobladder(44%),ileal conduit(31%),and ureterocutaneostomy(23%).Only 2.3% of patients accepted neo-adjuvant chemotherapy and only 18%of T3 and T4 patients accepted adjuvant chemotherapy.Conclusion:Disease characteristics are similar to international reports,while differences of diagnosis and treatment exist.This study can provide evidences for revisions of the guideline on bladder cancer in China. | Kaiwen Li Tianxin Lin 无 Wei Xue Xin Mu Enci Xu Xu Yang Fubao Chen Guangyong Li Lulin Ma Guoliang Wang Chaozhao Liang Haoqiang Shi Ming Li Mao Tang Xueyi Xue Yisong Lv Yaoliang Deng Chengyang Li Zhiwen Chen Xiaozhou Zhou Fengshuo Jin Xudong Liu Jinxin Wei Lei Shi Xin Gou Weiyang He Liqun Zhou Lin Cai Baiye Jin Guanghou Fu Xiangbo Kong Hongyan Sun Ye Tian Lang Feng Tiejun Pan Yiyi Wu Dongwen Wang Hailong Hao Benkang Shi Yaofeng Zhu Qiang Wei Ping Han Changli Wu Dawei Tian Zhangqun Ye Zheng Liu Zhiping Wang Junqiang Tian Lin Qi Minfeng Chen Wei Li Jinchun Qi Gongxian Wang Longlong Fu Zhaolin Sun Guangheng Luo Zhoujun Shen Zhaowei Zhu Jinchun Xing Zhun Wu Dong Wei Xin Chen Yanqun Na Hongfeng Guo Chunxi Wang Zhihua Lu Chuize Kong Yang Liu Jin Yang Jianyun Hu Xin Gao Jielin Li Changjun Yin Pu Li Shan Chen Zhen Du Jiongming Li Yongji Yan Xu Zhang Shuang Huang Fangjian Zhou Zhiling Zhang Yinghao Sun Shuxiong Zeng Song Cen Jiaquan Zhou Hanzhong Li Jin Wen Jian Huang | 2015 | Asian Journal of Urology2015,2,2: | 21 |
| 9 | The implementation of an improved NPML absorbing boundary condition in elastic wave modeling显示文摘在向前当模特儿的有弹性的波浪,吸收边界条件(ABC ) 被用来从模型截断边界减轻不希望得到的思考。完美地匹配的层(PML ) 证明了是最好的可得到的 ABC。然而,传统的切开 PML (SPML ) ABC 有一些严肃的劣势:例如,全球 SPML ABC 要求更多计算记忆,尽管实现是容易的。本地 SPML ABC 的实现也有一些困难,自从边和角落必须被考虑。因为卷绕旋转,传统的非切开的完美地匹配的层(NPML ) ABC 有复杂计算。在这篇论文,基于 ABC 与复杂转移频率的拉长函数(CFS ) 相结合的非切开的完美地匹配的层(NPML ) ,我们为与简单计算方程,小存储器要求,和容易的编程吸收边界条件的 PML 介绍一个新奇数字实现方法。 | Qin Zhen Lu Minghui Zheng Xiaodong Yao Yao Zhang Cai Song Jianyong | 2009 | Applied Geophysics2009,6,2: | 21 |
| 10 | λ-Central BMO Estimates for Commutators of Singular Integral Operators with Rough Kernels显示文摘作者在中央 Morrey 空格用不平的核为单个不可分的操作员的整流器建立 λ-central BMO 估计。而且,中央 Morrey 空格的产品上的 multisublinear 操作符的一个类的围住的海角被讨论。作为它的特殊情况,多线性的考尔德ó n -Zygmund 操作员和多线性的部分不可分的操作员的相应结果能分别地被推出。 | Zun Wei FU Yan LIN Shan Zhen LU | 2008 | Acta Mathematica Sinica,English Series2008,24,3: | 20 |
| 11 | The ChinaMAP analytics of deep whole genome sequences in 10,588 individuals显示文摘Metabolic diseases are the most common and rapidly growing health issues worldwide.The massive population-based human genetics is crucial for the precise prevention and intervention of metabolic disorders.The China Metabolic Analytics Project(ChinaMAP)is based on cohort studies across diverse regions and ethnic groups with metabolic phenotypic data in China.Here,we describe the centralized analysis of the deep whole genome sequencing data and the genetic bases of metabolic traits in 10,588 individuals from the ChinaMAP.The frequency spectrum of variants,population structure,pathogenic variants and novel genomic characteristics were analyzed.The individual genetic evaluations of Mendelian diseases,nutrition and drug metabolism,and traits of blood glucose and BMI were integrated.Our study establishes a large-scale and deep resource for the genetics of East Asians and provides opportunities for novel genetic discoveries of metabolic characteristics and disorders. | Yanan Cao Lin Li Min Xu Zhimin Feng Xiaohui Sun Jieli Lu Yu Xu Peina Du Tiange Wang Ruying Hu Zhen Ye Lixin Shi Xulei Tang Li Yan Zhengnan Gao Gang Chen Yinfei Zhang Lulu Chen Guang Ning Yufang Bi Weiqing Wang The ChinaMAP Consortium | 2020 | Cell Research2020,30,9: | 20 |
| 12 | Effect of porosities of bilayered porous scaffolds on spontaneous osteochondral repair in cartilage tissue engineering显示文摘Poly(lactide-co-glycolide)-bilayered scaffolds with the same porosity or different ones on the two layers were fabricated,and the porosity effect on in vivo repairing of the osteochondral defect was examined in a comparative way for the first time.The constructs of scaffolds and bone marrow-derived mesenchymal stem cells were implanted into pre-created osteochondral defects in the femoral condyle of New Zealand white rabbits.After 12 weeks,all experimental groups exhibited good cartilage repairing according to macroscopic appearance,cross-section view,haematoxylin and eosin staining,toluidine blue staining,immunohistochemical staining and real-time polymerase chain reaction of characteristic genes.The group of 92%porosity in the cartilage layer and 77%porosity in the bone layer resulted in the best efficacy,which was understood by more biomechanical mimicking of the natural cartilage and subchondral bone.This study illustrates unambiguously that cartilage tissue engineering allows for a wide range of scaffold porosity,yet some porosity group is optimal.It is also revealed that the biomechanical matching with the natural composite tissue should be taken into consideration in the design of practical biomaterials,which is especially important for porosities of a multi-compartment scaffold concerning connected tissues. | Zhen Pan Pingguo Duan Xiangnan Liu Huiren Wang Lu Cao Yao He Jian Dong Jiandong Ding | 2015 | Regenerative Biomaterials2015,2,1: | 20 |
| 13 | Preliminary results of environmental monitoring of the natural gas hydrate production test in the South China Sea显示文摘Natural gas hydrate (NGH)is considered as one of the new clean energy sources of the 21st century with the highest potential.The environmental issues of NGH production have attracted the close attention of scientists in various countries.From May 10 to July 9,2017,the first offshore NGH production test in the South China Sea (SCS)was conducted by the China Geological Survey.In addition,environmental security has also been effectively guaranteed via a comprehensive environmental monitoring system built during the NGH production test.The monitoring system considered sea-surface atmosphere methane and carbon dioxide concentrations,dissolved methane in the sea water column,and the seafloor physical oceanography and marine chemistry environment.The whole process was monitored via multiple means, in multiple layers,in all domains,and in real time.After the production test,an environmental investigation was promptly conducted to evaluate the environmental impact of the NGH production test. The monitoring results showed that the dissolved methane concentration in seawater and the near-seabed environment characteristics after the test were consistent with the background values,indicating that the NGH production test did not cause environmental problems such as methane leakage. | Jian-liang Ye Xu-wen Qin Hai-jun Qiu Qian-yong Liang Yi-fei Dong Jian-gong Wei Hai-long Lu Jing-an Lu Yao-hong Shi Chao Zhong Zhen Xia | 2018 | China Geology2018,1,2: | 19 |
| 14 | PROPULSIVE PERFORMANCE AND VORTEX SHEDDING OF A FOIL IN FLAPPING MOTION显示文摘The propulsive performance and vortex shedding of oscillating foil, which mimics biological locomotion, were numerically investigated. The objectives of this study were to deal with unsteady force, in particular thrust force, exerted on the foil in pitching and plunging motions, and to explore the relation of the propulsive performance with vortex structures near the foil and vortex shedding in the near wake. The two dimensional incompressible Navier Stokes equations in the vorticity and stream function formulation were solved by fourth order essentially compact finite difference schemes for the space derivatives and a fourth order Runge Kutta scheme for the time advancement. To reveal the mechanism of the propulsive performance, the unsteady force and the shedding of the trailing and leading edge vortices of the foil were analyzed. The effects of some typical factors, such as the frequency and amplitude of the oscillation, the phase difference between the pitching and plunging motions, and the thickness ratio of the foil, on the vortex shedding and unsteady force were discussed. | Yang Yan, Lu Xi yun, Yin Xie zhen Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230026, China, | 2003 | Journal of Hydrodynamics2003,15,5: | 18 |
| 15 | Increased brachial-ankle pulse wave velocity is associated with impaired endothelial function in patients with coronary artery disease显示文摘Background Pulse wave velocity and flow-mediated vasodilation (FMD) are widely used as noninvasive modalities for evaluating atherosclerosis. However, it is not known whether pulse wave velocity is related to FMD in patients with coronary artery disease (CAD). Therefore, the present study was designed to investigate the alteration in brachial-ankle pulse wave velocity (baPWV) and endothelial function in CAD patients. Methods Thirty-three patients with CAD and thirty control subjects were recruited for this study. baPWV was measured non-invasively using a VP 1000 automated PWV/ABI analyzer (PWV/ABI, Colin Co. Ltd., Komaki, Japan). Endothelial function as reflected by FMD in the brachial artery was assessed with a high-resolution ultrasound device. Results baPWV was increased in CAD patients compared with control subjects [(1756.1±253.1) cm/s vs (1495.3±202.3) cm/s, P<0.01]. FMD was significantly reduced in CAD patients compared with control subjects [(5.2±2.1) % vs (11.1±4.4) %, P<0.01]. baPWV correlated with FMD (r =-0.68, P<0.001). The endothelium-independent vasodilation induced by sublingual nitroglycerin in the brachial artery was similar in the CAD group compared with the control group. Conclusions CAD is associated with increased baPWV and endothelial dysfunction. Increased baPWV parallels diminished endothelial function. Our data therefore suggest that baPWV can be used as a noninvasive surrogate index in clinical evaluation of endothelial function. | LIU Dong-hong WANG Yan LIAO Xin-xue XU Ming-guo WANG Jie-mei YANG Zhen CHEN Long LU Ming-de LU Kun TAO Jun | 2006 | Chinese Medical Journal2006,,22: | 17 |
| 16 | Comparative Analysis of Characteristics of the Coupled and Decoupled Parallel Mechanisms显示文摘The existence of coupling makes the parallel mechanism possess some special advantages over the serial mechanism, while it is just the coupling that brings about the parallel mechanism some limitations, such as complex workspace, high nonlinear relationship between input and output, difficulties in static and dynamic analysis, and the development of control system, which restricts its application fields. The decoupled parallel mechanism is currently one of the research focuses of the mechanism fields, while the study on the different characteristics between the decoupled and coupled parallel mechanisms has not been reported. Therefore, this paper performs the systematic comparative analysis of the 3-RPUR and the 3-CPR parallel mechanisms. The features of the two mechanisms are described and their movement forms are analyzed with screw theory. The inverse and forward displacement solutions are solved and the Jacobian matrices are obtained. According to the Jacobian matrices and by using the theory of physical model of the solution space, the workspace, dexterity, velocity, payload capability, and stiffness of the mechanisms are analyzed with plotting the indices atlases. The research results prove that the effects of the coupling on the parallel mechanism are double-side, and then the adoption of the decoupled parallel mechanism should be determined by the requirements of the concrete application situation. The contents of this paper should be useful for the type synthesis and practical application of the parallel mechanism. | ZENG Daxing HOU Yulei LU Wenjuan HUANG Zhen | 2010 | Chinese Journal of Mechanical Engineering2010,23,4: | 17 |
| 17 | Joint TDOA, FDOA and differential Doppler rate estimation: Method and its performance analysis显示文摘Considering the estimation accuracy reduction of Frequency Difference of Arrival(FDOA) caused by relative Doppler companding, a joint Time Difference of Arrival(TDOA),FDOA and differential Doppler rate estimation method is proposed and its Cramer-Rao low bound is derived in this paper.Firstly, second-order ambiguity function is utilized to reduce the dimensionality and estimate initial TDOA and differential Doppler rate.Secondly, the TDOA estimation is updated and FDOA is obtained using cross ambiguity function, in which relative Doppler companding is compensated by the existing differential Doppler rate.Thirdly, differential Doppler rate estimation is updated using cross estimator.Theoretical analysis on estimation variance and Cramer-Rao low bound shows that the final estimation of TDOA, FDOA and differential Doppler rate performs well at both low and high signal–noise ratio, although the initial estimation accuracy of TDOA and differential Doppler rate is relatively poor under low signal–noise ratio conditions.Simulation results finally verify the theoretical analysis and show that the proposed method can overcome relative Doppler companding problem and performs well for all TDOA, FDOA and differential Doppler rate estimation. | Dexiu HU Zhen HUANG Shangyu ZHANG Jianhua LU | 2018 | Chinese Journal of Aeronautics2018,31,1: | 16 |
| 18 | Efficacy and safety of salmeterol/fluticasone compared with montelukast alone (or add-on therapy to fluticasone) in the treatment of bronchial asthma in children and adolescents: a systematic review and meta-analysis显示文摘Background:Despite the recommendation of inhaled corticosteroids(ICSs)plus long-acting beta 2-agonist(LABA)and leukotriene receptor antagonist(LTRA)or ICS/LTRA as stepwise approaches in asthmatic children,there is a lack of published systematic review comparing the efficacy and safety of the two therapies in children and adolescents aged 4 to 18 years.This study aimed to compare the safety and efficacy of salmeterol/fluticasone(SFC)vs.montelukast(MON),or combination of montelukast and fluticasone(MFC)in children and adolescents aged 4 to 18 years with bronchial asthma.Methods:A systematic search was conducted in MEDLINE,EMBASE,the Cochrane Library,China BioMedical Literature Database,Chinese National Knowledge Infrastructure,VIP Database for Chinese Technical Periodical,and Wanfang for randomized controlled trials(RCTs)published from inception to May 24,2021.Interventions are as follows:SFC vs.MON,or combination of MFC,with no limitation of dosage or duration.Primary and secondary outcome measures were as follows:the primary outcome of interest was the risk of asthma exacerbation.Secondary outcomes included risk of hospitalization,pulmonary function,asthma control level,quality of life,and adverse events(AEs).A random-effects(I^(2)≥50%)or fixed-effects model(I^(2)<50%)was used to calculate pooled effect estimates,comparing the outcomes between the intervention and control groups where feasible.Results:Of the 1006 articles identified,21 studies met the inclusion criteria with 2643 individuals;two were at low risk of bias.As no primary outcomes were similar after an identical treatment duration in the included studies,meta-analysis could not be performed.However,more studies favored SFC,instead of MON,owing to a lower risk of asthma exacerbation in the SFC group.As for secondary outcome,SFC showed a significant improvement of peak expiratory flow(PEF)%pred after 4 weeks compared with MFC(mean difference[MD]:5.45;95%confidence interval[CI]:1.57-9.34;I^(2)=95%;P=0.006).As for asthma control level,SFC also showed a higher full-controlled level(risk ratio[RR]:1.51;95%CI:1.24-1.85;I^(2)=0;P<0.001)and higher childhood asthma control test score after 4 weeks of treatment(MD:2.30;95%CI:1.39-3.21;I^(2)=72%;P<0.001)compared with MFC.Conclusions:SFC may be more effective than MFC for the treatment of asthma in children and adolescents,especially in improving asthma control level.However,there is insufficient evidence to make firm conclusive statements on the use of SFC or MON in children and adolescents aged 4 to 18 years with asthma.Further research is needed,particularly a combination of good-quality long-term prospective studies and well-designed RCTs.PROSPERO registration number:CRD42019133156. | Xiao-Jian Zhou Zhen Qin Jiao Lu Jian-Guo Hong | 2021 | Chinese Medical Journal2021,,24: | 16 |
| 19 | Sandwich-Like Fe&TiO2@C Nanocomposites Derived from MXene/Fe-MOFs Hybrids for Electromagnetic Absorption显示文摘Electromagnetic pollution has been causing a series of problems in people’s life,and electromagnetic absorbers with lightweight and broad absorbing bandwidth properties are widely desired.In this work,novel sandwich-like 2D laminated Fe&TiO2 nanoparticles@C nanocomposites were rationally designed and successfully developed from the MXene–MOFs hybrids.The formation of Fe and rutile-TiO2 nanoparticles sandwiched by the two-dimensional carbon nanosheets provided strong electromagnetic energy attenuation and good impedance matching for electromagnetic wave(EMW)absorption.As expected,the nanocomposites achieved a broad effective absorption bandwidth of 6.5 GHz at a thickness of only 1.6 mm and the minimum reflection loss(RL)value of−51.8 dB at 6.6 GHz with a thickness of 3 mm.This work not only provides a good design and fabricating concept for the laminated metal and functional nanoparticles@C nanocomposites with good EMW absorption,but also offers an important guideline to fabricate various two-dimensional nanocomposites derived from the MXene precursors. | Baiwen Deng Zhen Xiang Juan Xiong Zhicheng Liu Lunzhou Yu Wei Lu | 2020 | Nano-Micro Letters2020,12,4: | 16 |
| 20 | Does Early Postsurgical Temozolomide Plus Concomitant Radiochemotherapy Regimen Have Any Benefit in Newly-diagnosed Glioblastoma Patients? A Multi-center, Randomized, Parallel, Open-label, Phase II Clinical Trial显示文摘 | Ying Mao Yu Yao Li-Wei Zhang Yi-Cheng Lu Zhong-Ping Chen Jian-Min Zhang Song-Tao Qi Chao You Ren-Zhi Wang Shu-Yuan Yang Xiang Zhang Ji-Sheng Wang Ju-Xiang Chen Qun-Ying Yang Hong Shen Zhi-Yong Li Xiang Wang Wen-Bin Ma Xue-Jun Yang Hai-Ning Zhen Liang-Fu Zhou | 2015 | Chinese Medical Journal2015,,20: | 15 |