维普中文期刊产品整合服务
153篇 您的检索式:作者名="Yanyan Zhou"
    题名 作者 年代 出处 被引量
12018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up.Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu 2018Science Bulletin2018,63,23:54
2The China Alzheimer Report 2022显示文摘China’s population has rapidly aged over the recent decades of social and economic development as neurodegenerative disorders have proliferated,especially Alzheimer’s disease(AD)and related dementias(ADRD).AD’s incidence rate,morbidity,and mortality have steadily increased to make it presently the fifth leading cause of death among urban and rural residents in China and magnify the resulting financial burdens on individuals,families and society.The‘Healthy China Action’plan of 2019-2030 promotes the transition from disease treatment to health maintenance for this expanding population with ADRD.This report describes related epidemiological trends,evaluates the economic burden of the disease,outlines current clinical diagnosis and treatment status and delineates existing available public health resources.More specifically,it examines the public health impact of ADRD,including prevalence,mortality,costs,usage of care,and the overall effect on caregivers and society.In addition,this special report presents technical guidance and supports for the prevention and treatment of AD,provides expertise to guide relevant governmental healthcare policy development and suggests an information platform for international exchange and cooperation.Rujing Ren Jinlei Qi Shaohui Lin Xinya Liu Peng Yin Zhihui Wang Ran Tang Jintao Wang Qiang Huang Jianping Li Xinyi Xie Yongbo Hu Shishuang Cui Yuan Zhu Xiaoping Yu Pengfei Wang Yikang Zhu Yiran Wang Yanyan Huang Yisong Hu Ying Wang Chunbo Li Maigeng Zhou Gang Wang 2022General Psychiatry2022,35,1:20
3Antisense MMP-9 RNA inhibits malignant glioma cell growth in vitro and in vivo显示文摘The matrix-degrading metalloproteinases (MMPs), particularly MMP-9, play important roles in the pathogenesis and development of malignant gliomas. In the present study, the oncogenic role of MMP-9 in malignant glioma cells was investigated via antisense RNA blockade in vitro and in vivo. TJ905 malignant glioma cells were transfected with pcDNA3.0 vector expressing antisense MMP-9 RNA (pcDNA-AS-MMP9), which significantly decreased MMP-9 expression, and cell proliferation was assessed. For in vivo studies, U251 cells, a human malignant glioma cell line, were implanted subcutaneously into 4-to 6-week-old BALB/c nude mice. The mice bearing well-established U251 gliomas were treated with intratumoral pcDNA-AS-MMP9-Lipofectamine complex (AS-MMP-9-treated group), subcutaneous injection of endostatin (endostatin-treated group), or both (combined therapy group). Mice treated with pcDNA (empty vector)-Lipofectamine served as the control group. Four or eight weeks later, the volume and weight of tumor, MMP-9 expression, microvessel density and proliferative activity were assayed. We demonstrate that pcDNA-AS-MMP9 significantly decreased MMP-9 expression and inhibited glioma cell proliferation. Volume and weight of tumor, MMP-9 expression, microvessel density and proliferative activity in the antisense-MMP-9-treated and therapeutic alliance groups were significantly lower than those in the control group. The results suggest that MMP-9 not only promotes malignant glioma cell invasiveness, but also affects tumor cell proliferation. Blocking the expression of MMP-9 with antisense RNA substantially suppresses the malignant phenotype of glioma cells, and thus can be used as an effective therapeutic strategy for malignant gliomas.Cuiyun Sun Qian Wang Hongxu Zhou Shizhu Yu Alain R. Simard Chunsheng Kang Yanyan Li Yanling Kong Tongling An Yanjun Wen Fudong Shi Junwei Hao 2013Neuroscience Bulletin2013,29,1:14
4Prognostic significance of neutrophil to lymphocyte ratio in patients with hepatocellular carcinoma after transcatheter arterial chemoembolization显示文摘Xu Xinsen Chen Wei Zhang Lingqiang Miao Runchen Zhou Yanyan Wan Yong Dong Yafeng Liu Chang 2014Chinese Medical Journal2014,,24:10
5Global exponential stability of cellular neural networks with multi-proportional delays显示文摘Liqun Zhou Yanyan Zhang 2015International Journal of Biomathematics2015,8,6:10
6Magnetic field data processing methods of the China Seismo-Electromagnetic Satellite显示文摘The High Precision Magnetometer(HPM) on board the China Seismo-Electromagnetic Satellite(CSES) allows highly accurate measurement of the geomagnetic field; it includes FGM(Fluxgate Magnetometer) and CDSM(Coupled Dark State Magnetometer)probes. This article introduces the main processing method, algorithm, and processing procedure of the HPM data. First, the FGM and CDSM probes are calibrated according to ground sensor data. Then the FGM linear parameters can be corrected in orbit, by applying the absolute vector magnetic field correction algorithm from CDSM data. At the same time, the magnetic interference of the satellite is eliminated according to ground-satellite magnetic test results. Finally, according to the characteristics of the magnetic field direction in the low latitude region, the transformation matrix between FGM probe and star sensor is calibrated in orbit to determine the correct direction of the magnetic field. Comparing the magnetic field data of CSES and SWARM satellites in five continuous geomagnetic quiet days, the difference in measurements of the vector magnetic field is about 10 nT, which is within the uncertainty interval of geomagnetic disturbance.Bin Zhou YanYan Yang YiTeng Zhang XiaoChen Gou BingJun Cheng JinDong Wang Lei Li 2018Earth and Planetary Physics2018,2,6:9
7Carbon-Based MOF Derivatives:Emerging Efficient Electromagnetic Wave Absorption Agents显示文摘To tackle the aggravating electromagnetic wave(EMW)pollution issues,high-efficiency EMW absorption materials are urgently explored.Metal-organic framework(MOF)derivatives have been intensively investigated for EMW absorption due to the distinctive components and structures,which is expected to satisfy diverse application requirements.The extensive developments on MOF derivatives demonstrate its significantly important role in this research area.Particularly,MOF derivatives deliver huge performance superiorities in light weight,broad bandwidth,and robust loss capacity,which are attributed to the outstanding impedance matching,multiple attenuation mechanisms,and destructive interference effect.Herein,we summarized the relevant theories and evaluation methods,and categorized the state-of-the-art research progresses on MOF derivatives in EMW absorption field.In spite of lots of challenges to face,MOF derivatives have illuminated infinite potentials for further development as EMW absorption materials.Xue Zhang Jing Qiao Yanyan Jiang Fenglong Wang Xuelei Tian Zhou Wang Lili Wu Wei Liu Jiurong Liu 2021Nano-Micro Letters2021,13,9:9
8Acupuncture at the “Huatuojiaji” point affects nerve root regional interleukin-1 level in a rat model of lumbar nerve root compression显示文摘BACKGROUND:It has been shown that interleukin-1 (IL-1) may cause inflammatory reactions, which stimulate the nerve root of patients with lumbar intervertebral disc protrusion and leads to pain. Whether the clinical curative effects of acupuncture in the treatment of lumbar and leg pain are linked to an inhibition of local IL-1 secretion is unknown. OBJECTIVE: To assess the influence of acupuncture on IL-1, this study was designed to verify the effects of acupuncture at the 'Huatuojiaji (Extra)' point on the nerve root in a rat model of lumbar nerve root compression, compared with administration of meloxicam, a non-steroidal anti-inflammatory drug. DESIGN, TIME AND SETTING: Randomized, controlled, molecular biology experiment, performed at the Experimental Center, Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University between September 2005 and April 2006. MATERIALS: Forty healthy adult Sprague Dawley rats of either gender were included in this study. The rats were randomly and evenly divided into the following four groups: normal control, model, acupuncture and meloxicam groups. Lumbar nerve root compression was induced in rats in the model, acupuncture, and meloxicam groups by inserting a specially made silicon rubber slice at the juncture of the L5 nerve root and the dural sac. The acupuncture needle (pattern number N3030, 30#, 1.5 inch) was purchased from Suzhou Medical Appliance Factory, China. IL-1 enzyme linked immunosorbent assay (ELISA) kit was purchased from Santa Cruz Biotechnology, Inc., USA. METHODS: The acupuncture group was acupunctured at the 'Huatuojiaji' point, which is lateral to the compressed L5-6 nerve root, with an acupuncture depth of 0.5 cm. There were two treatment courses, each of involved seven 20-minute acupuncture sessions, one session a day. The meloxicam group was administered intragastrically 3.75 mg/kg meloxicam (5 mg meloxicam /10 mL physiological saline). Rats in the normal control group and model group received an intragastric administration of 10 mL/kg physiological saline. All administrations were performed once a day. MAIN OUTCOME MEASURES: At day 14 post-surgery, the IL-1 level in the compressed nerve root was determined by a streptavidin-peroxidase (S-P) immunohistochemical method, and IL-1β mRNA expression in the compressed nerve root was simultaneously detected by real-time reverse transcription-polymerase chain reaction. RESULTS: The expression levels of IL-1 and IL-1β mRNA in the L5 nerve root were significantly higher in the model group than in the control group (P < 0.01). However, the expression levels of IL-1 and IL-1β mRNA were significantly lower in the acupuncture and meloxicam groups than in the model group (P < 0.05–0.01). Expression levels of IL-1 and IL-1β mRNA were significantly higher in the acupuncture group than in the meloxicam group (P < 0.01). CONCLUSION: Acupuncture at the 'Huatuojiaji' point decreases the IL-1 level by inhibiting IL-1β mRNA expression to a greater extent than meloxicam administration.Yaochi Wu Junfeng Zhang Chongmiao Wang Yanyan Xie Jinghui Zhou 2008Neural Regeneration Research2008,3,8:7
9Effects of Shuanghuanglian oral liquids on patients with COVID-19:a randomized,open-label,parallel-controlled,multicenter clinical trial显示文摘We conducted a randomized,open-label,parallel-controlled,multicenter trial on the use of Shuanghuanglian(SHL),a traditional Chinese patent medicine,in treating cases of COVID-19.A total of 176 patients received SHL by three doses(56 in low dose,61 in middle dose,and 59 in high dose)in addition to standard care.The control group was composed of 59 patients who received standard therapy alone.Treatment with SHL was not associated with a difference from standard care in the time to disease recovery.Patients with 14-day SHL treatment had significantly higher rate in negative conversion of SARS-CoV-2 in nucleic acid swab tests than the patients from the control group(93.4%vs.73.9%,P=0.006).Analysis of chest computed tomography images showed that treatment with high-dose SHL significantly promoted absorption of inflammatory focus of pneumonia,which was evaluated by density reduction of inflammatory focus from baseline,at day 7(mean difference(95%CI),−46.39(−86.83 to−5.94)HU;P=0.025)and day 14(mean difference(95%CI),−74.21(−133.35 to−15.08)HU;P=0.014).No serious adverse events occurred in the SHL groups.This study illustrated that SHL in combination with standard care was safe and partially effective for the treatment of COVID-19.Li Ni Zheng Wen Xiaowen Hu Wei Tang Haisheng Wang Ling Zhou Lujin Wu Hong Wang Chang Xu Xizhen Xu Zhichao Xiao Zongzhe Li Chene Li Yujian Liu Jialin Duan Chen Chen Dan Li Runhua Zhang Jinliang Li Yongxiang Yi Wei Huang Yanyan Chen Jianping Zhao Jianping Zuo Jianping Weng Hualiang Jiang Dao Wen Wang 2021Frontiers of Medicine2021,15,5:7
10Comparative transcriptome analysis of the lichen-forming fungus Endocarpon pusillum elucidates its drought adaptation mechanisms显示文摘The lichen-forming fungus was isolated from the desert lichen Endocarpon pusillum that is extremely drought resistant.To understand the molecular mechanisms of drought resistance in the fungus,we employed RNA-seq and quantitative real-time PCR to compare and characterize the differentially expressed genes in pure culture at two different water levels and with that in desiccated lichen.The comparative transcriptome analysis indicated that a total of 1781 genes were differentially expressed between samples cultured under normal and PEG-induced drought stress conditions.Similar to those in drought resistance plants and non-lichenized fungi,the common drought-resistant mechanisms were differentially expressed in E.pusillum.However,the expression change of genes involved in osmotic regulation in E.pusillum is different,which might be the evidence for the feature of drought adaptation.Interestingly,different from other organisms,some genes involved in drought adaption mechanisms showed significantly different expression patterns between the presence and absence of drought stress in E.pusillum.The expression of 23 candidate stress responsive genes was further confirmed by quantitative real-time PCR using dehydrated E.pusillum lichen thalli.This study provides a valuable resource for future research on lichen-forming fungi and shall facilitate future functional studies of the specific genes related to drought resistance.WANG YanYan ZHANG XinYu ZHOU QiMing ZHANG XiaoLing WEI JiangChun 2015Science China(Life Sciences)2015,58,1:6
11Influence of plastic film mulching and planting density on yield,leaf anatomy,and root characteristics of maize on the Loess Plateau显示文摘In rainfed areas of northwestern China,maize production is constrained mainly by low temperature during early growth and water limitation during the entire growth period.Plastic film mulching is commonly used to increase maize yield in this area,because it increases topsoil temperature and moisture content as well as water use efficiency.However,the physiological and anatomical bases of maize yield improvement with plastic film mulching are not well understood.The effects of plastic film mulching and planting density on maize yield,photosynthetic characteristics,respiration,leaf anatomy,and root growth were studied in a two-year field experiment conducted on the Loess Plateau of China in 2017 and 2018.The experiment used a split-split plot design with two mulching treatments(plastic film mulching and no mulching),two planting densities(7.5×104 and10.5×104 plants ha-1),and two maize cultivars,Zhengdan 958 and Xianyu 335.Compared with no mulching,plastic film mulching increased maize yields by 31.1%–46.4%in 2017 and3.6%–34.7%in 2018.Compared with low planting density,high planting density significantly increased and slightly reduced yields of both cultivars in the dry year 2017 and the rainy year 2018,respectively.Plastic film mulching increased photosynthesis and respiration as well as leaf stomatal density and aperture.Photosynthetic rate,dark respiration,and stomatal conductance and aperture were lower at high planting than at low planting density.Maize yield was positively correlated with photosynthesis,dark respiration,and stomatal aperture.Mulching increased root dry weight and length in the 0–20 cm soil layer and root activity at maturity.Overall,the changes in root growth and leaf anatomy resulted in increased photosynthesis and dark respiration,and the increased photosynthesis contributed to the increase in grain yield and biomass production under plastic film mulching conditions.Our results increase understanding of the physiological mechanisms by which plastic film mulching increases maize yield in water-and temperature-limited areas.Li Niu Yanyan Yan Peng Hou Wenbo Bai Rulang Zhao Yonghong Wang Shaokun Li Taisheng Du Ming Zhao Jiqing Song Wenbin Zhou 2020The Crop Journal2020,8,4:6
12Advances in lithium niobate photonics:development status and perspectives显示文摘Lithium niobate(LN)has experienced significant developments during past decades due to its versatile properties,especially its large electro-optic(EO)coefficient.For example,bulk LN-based modulators with high speeds and a superior linearity are widely used in typical fiber-optic communication systems.However,with everincreasing demands for signal transmission capacity,the high power and large size of bulk LN-based devices pose great challenges,especially when one of its counterparts,integrated silicon photonics,has experienced dramatic developments in recent decades.Not long ago,high-quality thin-film LN on insulator(LNOI)became commercially available,which has paved the way for integrated LN photonics and opened a hot research area of LN photonics devices.LNOI allows a large refractive index contrast,thus light can be confined within a more compact structure.Together with other properties of LN,such as nonlinear/acousto-optic/pyroelectric effects,various kinds of high-performance integrated LN devices can be demonstrated.A comprehensive summary of advances in LN photonics is provided.As LN photonics has experienced several decades of development,our review includes some of the typical bulk LN devices as well as recently developed thin film LN devices.In this way,readers may be inspired by a complete picture of the evolution of this technology.We first introduce the basic material properties of LN and several key processing technologies for fabricating photonics devices.After that,various kinds of functional devices based on different effects are summarized.Finally,we give a short summary and perspective of LN photonics.We hope this review can give readers more insight into recent advances in LN photonics and contribute to the further development of LN related research.Guanyu Chen Nanxi Li Jun Da Ng Hong-Lin Lin Yanyan Zhou Yuan Hsing Fu Lennon Yao Ting Lee Yu Yu Ai-Qun Liu Aaron J.Danner 2022Advanced Photonics2022,4,3:6
13Activation of mitogen-activated protein kinases in satellite glial cells of the trigeminal ganglion contributes to substance P-mediated inflammatory pain显示文摘Inflammatory orofacial pain,in which substance P (SP) plays an important role,is closely related to the cross-talk between trigeminal ganglion (TG) neurons and satellite glial cells (SGCs).SGC activation is emerging as the key mechanism underlying inflammatory pain through different signalling mechanisms,including glial fibrillary acidic protein (GFAP) activation,phosphorylation of mitogen-activated protein kinase (MAPK) signalling pathways,and cytokine upregulation.However,in the TG,the mechanism underlying SP-mediated orofacial pain generated by SGCs is largely unknown.In this study,we investigated whether SP is involved in inflammatory orofacial pain by upregulating interleukin (IL)-1β and tumour necrosis factor (TNF)-α from SGCs,and we explored whether MAPK signalling pathways mediate the pain process.In the present study,complete Freund’s adjuvant (CFA) was injected into the whisker pad of rats to induce an inflammatory model in vivo.SP was administered to SGC cultures in vitro to confirm the effect of SP.Facial expression analysis showed that pre-injection of L703,606 (an NK-1 receptor antagonist),U0126 (an inhibitor of MAPK/extracellular signal-regulated kinase [ERK] kinase [MEK] 1/2),and SB203580 (an inhibitor of P38) into the TG to induce targeted prevention of the activation of the NK-1 receptor and the phosphorylation of MAPKs significantly suppressed CFA-induced inflammatory allodynia.In addition,SP promoted SGC activation,which was proven by increased GFAP,p-MAPKs,IL-1β and TNF-α in SGCs under inflammatory conditions.Moreover,the increase in IL-1β and TNF-α was suppressed by L703,606,U0126 and SB203580 in vivo and in vitro.These present findings suggested that SP,released from TG neurons,activated SGCs through the ERK1/2 and P38 pathways and promoted the production of IL-1β and TNF-α from SGCs,contributing to inflammatory orofacial pain associated with peripheral sensitization.Yanyan Zhang Ning Song Fei Liu Jiu Lin Mengke Liu Chaolan Huang Daqing Liao Cheng Zhou Hang Wang Jiefei Shen 2019International Journal of Oral Science2019,11,3:6
14Luminescent properties of Dy^3+/Eu^3+ doped fluorescent glass for white LED based on oxyfluoride matrix显示文摘Rare earth ion-doped fluorescent glass has become a hotspot due to its characteristics.This work shows that the prepared Dy^3+and Dy^3+/Eu^3+doped glasses have white light emission under ultraviolet excitation.There is a higher yellow light/blue light(Y/B)value,indicating an increase in the covalentity of Dy-O,and decrease in the symmetry with the increasing concentration of dopants(Dy^3+).The correlated color temperature(CCT)can be effectively reduced by the red light emission of Eu^3+,and the order of influence of excitation wavelength on CCT is 395 nm>382 nm>365 nm.The delay curve demonstrates the energy transfer from Dy^3+to Eu^3+.The glass has the characteristics of anti-blue light damage and wide tunable color temperature,which illustrates that it has potential application in the field of white LED.Jingxi An Shuang Zhang Ruiwang Liu Guangxu Hu Zhiwei Zhang Yiyu Qiu Yanyan Zhou Fanming Zeng Zhongmin Su 2021Journal of Rare Earths2021,39,1:5
15A targeted sequencing approach to find novel pathogenic genes associated with sporadic aortic dissection显示文摘Aortic dissection(AD) is a heterogeneous genetic disease of the aorta with high mortality and poor prognosis. However, only few genetic causes of AD have been explored till date. After conducting a broad literature review focused on identifying potential pathogenic pathways, we designed a panel containing 152 AD-associated genes to conduct massively parallel targeted nextgeneration sequencing of 702 sporadic aortic dissection patients and 163 matched healthy controls. After validation by Sanger sequencing, we identified 21 definitely pathogenic and 635 likely pathogenic variants in 61.25%(430/702) of patients. In these patients, 34.88%(150/430) harbored more than one variant that was either definitely or likely to be pathogenic. Among the candidate genes, we identified 546 likely pathogenic variants in 47.72%(335/702) of patients. Importantly, we identified 94 lossof-function(LOF) variants in 45 genes in AD patients, but only five LOF variants in the controls(P=1.34×10^(-4)). With a burden test, we highlighted RNF213 as an important new gene for AD pathogenesis. We also performed transcriptome sequencing of human aorta tissues to evaluate the expression levels of these newly identified genes. Our study has compiled a comprehensive genetic map of sporadic AD in the Han Chinese population. We believe it will facilitate risk predicting and genetic diagnosis of this severe disease in the future.Zongzhe Li Chengming Zhou Lun Tan Peng Chen Yanyan Cao Xianqing Li Jiangtao Yan Hesong Zeng Dao-Wu Wang Dao-Wen Wang 2018Science China(Life Sciences)2018,61,12:4
16Initial scalar lithospheric magnetic anomaly map of China and surrounding regions derived from CSES satellite data显示文摘The China Seismo-Electromagnetic Satellite(CSES),China’s first satellite to measure geophysical fields with scientific goals in both space and solid earth physics,was launched successfully in February 2018.It carries high-precision magnetometers to measure the geomagnetic field.In this study,the CSES magnetic data were used to extract the signal of the lithospheric magnetic field caused by magnetized rocks in the crust and uppermost mantle.First,an along-track analysis of the CSES magnetic data was undertaken near the Bangui magnetic anomaly in central Africa and the Tarim magnetic anomaly in China,demonstrating that the CSES magnetic data are indeed sensitive to the lithospheric magnetic anomaly field.Then a lithospheric magnetic anomaly map over China and surrounding regions was derived.This map is consistent with the lithospheric part of the CHAOS-7 model.In particular,it clearly reveals four major magnetic anomalies containing long-wavelength signals at the altitude of lowearth-orbiting satellites.Three magnetic highs are located over the Tarim,Sichuan and Songliao basin,the origins of which could be related to large-scale tectonic-magmatic activities during geological history.A prominent magnetic low is otherwise found in the southern Himalayan-Tibetan plateau,possibly caused by the shallow Curie depth in this region.To further improve the precision of the lithospheric magnetic field model,more detailed data processing and multi-source data merging are needed.WANG Jie SHEN XuHui YANG YanYan ZEREN ZhiMa HULOT Gauthier OLSEN Nils ZHOU Bin MAGNES Werner DE SANTIS Angelo HUANG JianPing GUO Feng LIU WenLong YU JingBo 2021Science China(Technological Sciences)2021,64,5:4
17Variants of genes encoding collagens and matrix metalloproteinase system increased the risk of aortic dissection显示文摘Aortic dissection(AD) is a devastating,heterogeneous condition of aorta.The homeostasis between collagens and matrix metalloproteases(MMPs)/tissue inhibitors of MMPs(TIMPs) system in the extracellular matrix plays an important role for structure and functions of aorta.However,our knowledge on association between variants of genes in this system and pathogenesis of AD is very limited.We analyzed all yet known coding human genes of collagens(45 genes),MMPs/TIMPs(27genes) in 702 sporadic AD patients and in 163 matched healthy controls,by using massively targeted next-generation and Sanger sequencing.To define the pathogenesis of potential disease-causing candidate genes,we performed transcriptome sequencing and pedigree co-segregation analysis in some genes and generated Col5a2 knockout rats.We identified 257 pathogenic or likely pathogenic variants which involved 88.89%(64/72) genes in collagens-MMPs/TIMPs system and accounted for 31.05%(218/702) sporadic AD patients.In them,84.86%patients(185/218) carried one variant,12.84%two variants and 2.30%more than two variants.Importantly,we identified 52 novel probably pathogenic loss-of-function(LOF) variants(20 nonsense,16 frameshift,14 splice sites,one stop-loss,one initiation codon) in 11.06%(50/452) AD patients,which were absent in 163controls(P=2.5×10^(-5)).Transcriptome sequencing revealed that identified variants induced dyshomeostasis in expression of collagens-TIMPs/MMPs systems.The Col5α2^(-/-) rats manifested growth retardation and aortic dysplasia.Our study provides a first comprehensive map of genetic alterations in collagens-MMPs/TIMPs system in sporadic AD patients and suggests that variants of these genes contribute largely to AD pathogenesis.Zongzhe Li Chengming Zhou Lun Tan Peng Chen Yanyan Cao Chenze Li Xianqing Li Jiangtao Yan Hesong Zeng Dao-Wu Wang Dao-Wen Wang 2017Science China(Life Sciences)2017,60,1:4
18Exploring the diagnosis markers for gallbladder cancer based on clinical data显示文摘一会儿,没有有效标记是可得到的便于胆囊癌症(GBC ) 诊断。这研究试图为 GBC 诊断探索可得到的标记。144 GBC 和 116 个胆石病病人的临床的数据回顾地被考察。逻辑回归分析被执行评估 GBC 风险因素。操作特征(巨鸟) 曲线的接收装置被用来估计风险因素的诊断价值。由比较 GBC 和胆石病病人的特征,下列因素展出了统计差别:年龄,性,胆石,全部的 bilirubin (TB ) ,碱的磷酸酶(高山) , aspartate aminotransferase (著名计算机生产厂商) ,丙氨酸 aminotransferase (中高音) ,血小板计数(PLT ) , CA125 (carcinoembryonic 抗原 125 ) ,和 CA199 (糖类抗原 199 ) 。逻辑回归分析显示了那年龄[机会比率(或) , 1.032;95%confidence 间隔(95% CI ) , 1.004 ~ 1.061;P = 0.024 ] ,性(或, 0.346;95% CI, 0.167 ~ 0.716;P = 0.004 ) ,胆石(或, 0.027;95% CI, 0.007 ~ 0.095;P < 0.001 ) ,高山(或, 1.003;95% CI, 1.000 ~ 1.006;P = 0.032 ) , TB (或, 1.004;95% CI, 1.000 ~ 1.009;P = 0.042 ) ,并且 CA125 (或, 1.007;95% CI, 1.002 ~ 1.013;P = 0.011 ) 是为 GBC 的独立风险因素。根据巨鸟曲线, CA125 [在曲线(AUC ) 下面的区域, 0.720 ] ,高山(AUC, 0.713 ) , TB (AUC, 0.636 ) ,并且年龄(AUC, 0.573 ) 是珍贵诊断标记。基于独立风险因素,另外, GBC 诊断模型被建立。年龄, TB,高山,和 CA125 能被用作 GBC 的辅助诊断因素。当包括地考虑各种各样的风险因素时,诊断模型为 GBC 诊断提供一个量的工具。Lingqiang Zhang Runchen Miao Xiude Zhang Wei Chen Yanyan Zhou Ruitao Wang Ruiyao Zhang Qing Pang Xinsen Xu Chang Liu 2015Frontiers of Medicine2015,9,3:4
19Recent Advancements on Photothermal Conversion and Antibacterial Applications over MXenes-Based Materials显示文摘The pernicious bacterial proliferation and emergence of super-resistant bacteria have already posed a great threat to public health,which drives researchers to develop antibiotic-free strategies to eradicate these fierce microbes.Although enormous achievements have already been achieved,it remains an arduous challenge to realize efficient sterilization to cut off the drug resistance generation.Recently,photothermal therapy(PTT)has emerged as a promising solution to efficiently damage the integrity of pathogenic bacteria based on hyperthermia beyond their tolerance.Until now,numerous photothermal agents have been studied for antimicrobial PTT.Among them,MXenes(a type of two-dimensional transition metal carbides or nitrides)are extensively investigated as one of the most promising candidates due to their high aspect ratio,atomic-thin thickness,excellent photothermal performance,low cytotoxicity,and ultrahigh dispersibility in aqueous systems.Besides,the enormous application scenarios using their antibacterial properties can be tailored via elaborated designs of MXenes-based materials.In this review,the synthetic approaches and textural properties of MXenes have been systematically presented first,and then the photothermal properties and sterilization mechanisms using MXenes-based materials are documented.Subsequently,recent progress in diverse fields making use of the photothermal and antibacterial performances of MXenes-based materials are well summarized to reveal the potential applications of these materials for various purposes,including in vitro and in vivo sterilization,solar water evaporation and purification,and flexible antibacterial fabrics.Last but not least,the current challenges and future perspectives are discussed to provide theoretical guidance for the fabrication of efficient antimicrobial systems using MXenes.Shuyan Hao Hecheng Han Zhengyi Yang Mengting Chen Yanyan Jiang Guixia Lu Lun Dong Hongling Wen Hui Li Jiurong Liu Lili Wu Zhou Wang Fenglong Wang 2022Nano-Micro Letters2022,14,11:4
20Physicochemical and tribological properties of gemini-type halogen-free dicationic ionic liquids显示文摘A series of new halogen-free dicationic ionic liquids(ILs)with different alkyl chain lengths were prepared,and the relationship between the alkyl chain length,physicochemical and tribological properties of ILs,and their role as neat lubricant for steel–steel friction pairs,was investigated.Evaluation of stability during hydrolysis and copper strip corrosion test results show that synthetic ILs are stable and not corrosive to metal contacts,due to the halogen-free anions.The friction and wear test results indicate that ILs with long alkyl chains have excellent friction-reducing and anti-wear properties,especially at high temperatures.Based on the surface three-dimensional(3D)profiles,electrical contact resistance,scanning electron microscopy(SEM),energy dispersive X-ray spectroscopy(EDS),and the X-ray photoelectron spectrometry(XPS)analysis of the worn surfaces of steel discs,we can conclude that the efficiency of ILs is due to the formation of high quality tribofilms that consist of both tribochemical reaction and ordered absorption films.Qiangliang YU Chaoyang ZHANG Rui DONG Yijun SHI Yurong WANG Yanyan BAI Jiaying ZHANG Meirong CAI Feng ZHOU Weimin LIU 2021Friction2021,9,2:3
返回顶部 每页显示:
共8页 首页 上一页 第1页 下一页 末页 /8 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费