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新型含刚性环己烷结构的氟代丙烯酸酯的制备及其性能研究
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作者 许伟 刘浩 +3 位作者 张博文 海芳 郝丽芬 王学川 《陕西科技大学学报》 北大核心 2023年第6期68-74,共7页
含氟液晶聚合物具有极好的疏水稳定性,因而在稳定疏水涂层领域的研究中备受关注.故为提高含氟聚合物的疏水稳定性,本文以异佛尔酮二异氰酸酯(IPDI)、甲基丙烯酸羟乙酯(HEMA)和全氟已基乙醇(S104)为原料简便地合成了一种新型含刚性环己... 含氟液晶聚合物具有极好的疏水稳定性,因而在稳定疏水涂层领域的研究中备受关注.故为提高含氟聚合物的疏水稳定性,本文以异佛尔酮二异氰酸酯(IPDI)、甲基丙烯酸羟乙酯(HEMA)和全氟已基乙醇(S104)为原料简便地合成了一种新型含刚性环己烷结构的氟代丙烯酸酯(FAM).以甲基丙烯酸十二氟庚酯(DFMA)为参照物,利用傅里叶变换红外光谱仪、核磁共振波谱仪、X射线衍射仪、偏光显微镜、差示扫描量热仪、热重分析仪、静/动态水接触角测量仪对单体及其均聚物的结构、液晶行为、热性能和疏水性能进行研究.结果表明,所合成产物为含有环己烷刚性结构的氟代丙烯酸酯;其单体和均聚物具有热致液晶性;由于刚性结构的引入,其均聚物的热稳定性增加.刚性结构的存在还有利于均聚物侧基末端氟碳链的密集分布和阻止均聚物在与极性液体接触时所发生的表面基团重构,因而其疏水性和疏水稳定性更好. 展开更多
关键词 氟代丙烯酸酯 刚性侧链型液晶 向列相 表面自由能 疏水稳定性
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新型高压低重斜盘式压缩机结构性能研究 被引量:1
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作者 海方 苏智剑 《机械设计与制造》 北大核心 2021年第2期102-106,共5页
针对空气压缩机重量重、气压低无法较好地搭载在机载武器中的问题,提出了一种新型的高压低重斜盘式压缩机。首先,优化传统单级活塞式结构以满足轻量化要求。其次,通过多级压缩的方式,将气缸分为若干级,相同级并联,相邻级串联,且每级气... 针对空气压缩机重量重、气压低无法较好地搭载在机载武器中的问题,提出了一种新型的高压低重斜盘式压缩机。首先,优化传统单级活塞式结构以满足轻量化要求。其次,通过多级压缩的方式,将气缸分为若干级,相同级并联,相邻级串联,且每级气缸直径逐渐缩小,较单级压缩可提高15倍左右且持续可控。通过Matlab建立模型分析运动过程中压强、速度、加速度随转角的变化曲线。最后,针对多级压缩产生的热量问题,采用分级冷却的方式处理,该方式能有效地降低排气温度、提高工作效率。利用龙格库塔法进行热力特性分析与Ansys仿真,验证冷却管路设计。最终实现高气压、轻量化与高效并存的压缩机。 展开更多
关键词 斜盘压缩机 多级压缩 冷却管路 运动特性 高压 轻量
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茶多酚改性牛干灰皮胶原复合膜的制备及其性能
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作者 许伟 海芳 +3 位作者 刘浩 杨锐 郝丽芬 王学川 《陕西科技大学学报》 北大核心 2022年第4期16-21,共6页
牛干灰皮胶原纤维先经回湿、酸溶胀和磨浆处理,再分别与不同浓度(0.2 wt%、1.0 wt%和1.8 wt%)的茶多酚和30 wt%的甘油充分分散(均基于干胶原质量),采用溶液铸膜法制备了系列茶多酚改性胶原复合膜(CCF).用傅里叶变换红外光谱仪、X射线衍... 牛干灰皮胶原纤维先经回湿、酸溶胀和磨浆处理,再分别与不同浓度(0.2 wt%、1.0 wt%和1.8 wt%)的茶多酚和30 wt%的甘油充分分散(均基于干胶原质量),采用溶液铸膜法制备了系列茶多酚改性胶原复合膜(CCF).用傅里叶变换红外光谱仪、X射线衍射仪、差失扫描量热仪、水接触角测量仪、扫描电镜及拉伸试验机等仪器对CCF的结构、热性能、亲疏水性、微观形貌和机械性能进行研究.结果表明,CCF内保持了三股螺旋胶原结构的完整性但又以无定形态为主.随着茶多酚用量的增加,CCF内胶原肽链主要以无定形分布且肽链间横向堆积距离有变大趋势,CCF的热稳定性增加.扫描电镜测试结果表明,不加茶多酚的对照膜表面有空洞,不平整,膜断面不紧实;随着茶多酚用量的增加,CCF表面的空洞消失且颗粒数量逐渐增加,膜断面的紧实度也不断增大.CCF表面的静态水接触角由对照组的93.4°逐渐增加至124.3°,表明疏水性增加.膜抗张强度也由5.17 MPa增加至9.78 MPa,延伸率由6.1%降至2.5%.因此,可为牛干灰皮胶原纤维的资源化利用带来新的契机. 展开更多
关键词 牛干灰皮胶原纤维 茶多酚 复合膜 热稳定性
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Cross-sectional network analysis of plasma proteins/metabolites correlated with pathogenesis and therapeutic response in acute promyelocytic leukemia
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作者 Niu Qiao Yizhu Lyu +14 位作者 Feng Liu Yuliang Zhang Xiaolin Ma Xiaojing Lin Junyu Wang Yinyin Xie Ruihong Zhang Jing Qiao Hongming Zhu Li Chen hai fang Tong Yin Zhu Chen Qiang Tian Saijuan Chen 《Frontiers of Medicine》 SCIE CSCD 2024年第2期327-343,共17页
The treatment of PML/RARA+acute promyelocytic leukemia(APL)with all-trans-retinoic acid and arsenic trioxide(ATRA/ATO)has been recognized as a model for translational medicine research.Though an altered microenvironme... The treatment of PML/RARA+acute promyelocytic leukemia(APL)with all-trans-retinoic acid and arsenic trioxide(ATRA/ATO)has been recognized as a model for translational medicine research.Though an altered microenvironment is a general cancer hallmark,how APL blasts shape their plasma composition is poorly understood.Here,we reported a cross-sectional correlation network to interpret multilayered datasets on clinical parameters,proteomes,and metabolomes of paired plasma samples from patients with APL before or after ATRA/ATO induction therapy.Our study revealed the two prominent features of the APL plasma,suggesting a possible involvement of APL blasts in modulating plasma composition.One was characterized by altered secretory protein and metabolite profiles correlating with heightened proliferation and energy consumption in APL blasts,and the other featured APL plasma-enriched proteins or enzymes catalyzing plasma-altered metabolites that were potential trans-regulatory targets of PML/RARA.Furthermore,results indicated heightened interferon-gamma signaling characterizing a tumor-suppressing function of the immune system at the first hematological complete remission stage,which likely resulted from therapy-induced cell death or senescence and ensuing supraphysiological levels of intracellular proteins.Overall,our work sheds new light on the pathophysiology and treatment of APL and provides an information-rich reference data cohort for the exploratory and translational study of leukemia microenvironment. 展开更多
关键词 acute promyelocytic leukemia plasma proteomics plasma metabolomics cross-sectional correlation network PATHOGENESIS treatment
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GPCR信号通路调控微环境的免疫特征和介导EB病毒相关淋巴瘤的发生
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作者 熊杰 代雨婷 +18 位作者 王文芳 张浩 王朝夫 印彤 程澍 钟慧娟 余山河 姜璐 王升跃 方海 张瑞红 诸粤 易红梅 江旭峰 陈佳艺 王黎 许彭鹏 陈赛娟 赵维莅 《Science Bulletin》 SCIE EI CAS CSCD 2023年第21期2607-2619,M0006,共14页
EB病毒(EBV)是多种肿瘤的致癌驱动因素.然而,肿瘤发生过程中病毒与肿瘤免疫相互作用的潜在机制仍不清楚.自然杀伤T细胞淋巴瘤(NKTCL)是研究EBV相关淋巴瘤发生的代表性疾病模型.本文整合基因组、转录组和蛋白质组数据,全面报道了NKTCL的... EB病毒(EBV)是多种肿瘤的致癌驱动因素.然而,肿瘤发生过程中病毒与肿瘤免疫相互作用的潜在机制仍不清楚.自然杀伤T细胞淋巴瘤(NKTCL)是研究EBV相关淋巴瘤发生的代表性疾病模型.本文整合基因组、转录组和蛋白质组数据,全面报道了NKTCL的蛋白质基因组特征.多组学分析发现EBV基因模式与免疫介导的致癌信号相关.单细胞转录组分析进一步描绘肿瘤微环境的免疫炎症、缺陷和沙漠三种表型特征,与肿瘤-免疫循环的不同设定点相关.EBV与转录因子相互作用引起GPCRome重编程,肿瘤细胞和免疫抑制细胞上CCR1的高表达,从而调控微环境中病毒与肿瘤的相互作用.在NKTCL类器官中,靶向CCR1可清除EBV、激活T细胞和杀伤淋巴瘤细胞,具有潜在的靶向治疗作用.综上,本研究首次发现了一种GPCR介导的肿瘤发生发展机制,将病毒分子的感知效应转化为针对EBV的特异性抗肿瘤疗法. 展开更多
关键词 自然杀伤T细胞 肿瘤微环境 类器官 疾病模型 淋巴瘤细胞 EB病毒 免疫抑制 EBV
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Factors associated with recommendation behaviors of four non-National Immunization Program vaccines:a cross-sectional survey among public health workers in China
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作者 Yun Lyu Xiaozhen Lai +1 位作者 Yidi Ma hai fang 《Infectious Diseases of Poverty》 SCIE CAS CSCD 2023年第5期58-68,共11页
Background Immunization is a crucial preventive measure to safeguard children under five years old against a range of diseases.In China,the coverage rate of non-National Immunization Program(non-NIP)vaccines can be im... Background Immunization is a crucial preventive measure to safeguard children under five years old against a range of diseases.In China,the coverage rate of non-National Immunization Program(non-NIP)vaccines can be improved by leveraging the recommendation from public health workers.Hence,understanding the influencing factors of recommendation behaviors assume paramount importance.This study aims to investigate influencing factors of public health workers’recommendation behaviors towards non-NIP vaccines,with a particular emphasis on financial incentives.Methods A cross-sectional survey was conducted using a multi-stage sampling method in 2019 from August to October.627 public health workers were recruited from 148 community healthcare centers in ten provincial-level administrative divisions in China.An anonymous questionnaire was used to collect demographic information,attitudes towards vaccination,and recommendation behaviors towards non-NIP vaccines,includingHaemophilus influenzae type b(Hib)vaccine,pneumococcal conjugate vaccine,varicella vaccine,and rotavirus vaccine.Descriptive analysis and multivariate logistic regression analysis were adopted in this study.Results Of the 610 public health workers with complete survey data,53.8%,57.4%,84.1%,and 54.1%often recommended Hib vaccine,pneumococcal pneumonia vaccine(PCV),varicella vaccine,and rotavirus vaccine,respectively.Logistic regression revealed that gender(Hib vaccine:OR=0.4,95%CI:0.2-0.8;PCV:OR=0.4,95%CI:0.2-0.8;rotavirus vaccine:OR=0.3,95%CI:0.2-0.6),financial incentives for non-NIP vaccination(Hib vaccine:OR=1.9,95%CI:1.1-3.6;PCV:OR=2.1,95%CI:1.1-3.9;rotavirus vaccine:OR=2.0,95%CI:1.1-3.8)and perception of vaccine safety(Hib vaccine:OR=2.7,95%CI:1.1-7.0;PCV:OR=3.2,95%CI:1.2-8.0;rotavirus vaccine:OR=3.0,95%CI:1.2-7.7)were associated with public health workers’recommendation towards Hib vaccine,PCV and rotavirus vaccine.Conclusions The findings highlighted public health workers’recommendation behaviors of non-NIP vaccines in China and revealed strong association between vaccine recommendation and financial incentives.This highlights the importance of financial incentives in public health workers’recommendation toward non-NIP vaccines in China.Proper incentives are recommended for public health workers to encourage effective health promotion in immunization practices. 展开更多
关键词 National Immunization Program VACCINATION Public health workers Cross-sectional survey RECOMMENDATION China
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Human endogenous retroviruses as epigenetic therapeutic targets in TP53-mutated diffuse large B-cell lymphoma
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作者 Ying fang Mu-Chen Zhang +9 位作者 Yang He Chen Li hai fang Peng-Peng Xu Shu Cheng Yan Zhao Yan Feng Qian Liu Li Wang Wei-Li Zhao 《Signal Transduction and Targeted Therapy》 SCIE CSCD 2023年第11期5325-5337,共13页
TP53 mutation(TP53^(mut))occurs in 10–20%of diffuse large B-cell lymphoma(DLBCL)cases and serves as an unfavorable biomarker of DLBCL progression.It confers resistance to immunochemotherapy,high-dose chemotherapy,aut... TP53 mutation(TP53^(mut))occurs in 10–20%of diffuse large B-cell lymphoma(DLBCL)cases and serves as an unfavorable biomarker of DLBCL progression.It confers resistance to immunochemotherapy,high-dose chemotherapy,autologous stem cell transplantation,and anti-CD19 chimeric antigen receptor T-cell therapy.Therapeutic targeting of TP53^(mut) remains a significant challenge in DLBCL treatment.Here we assessed TP53^(mut) in 667 patients with newly diagnosed DLBCL,including 576 patients treated with immunochemotherapy rituximab,cyclophosphamide,doxorubicin,vincristine,and prednisone(R-CHOP)and 91 patients with decitabine plus R-CHOP(DR-CHOP,NCT02951728 and NCT04025593).TP53^(mut) independently predicted an inferior prognosis in R-CHOP-treated DLBCL,although this could be mitigated by DR-CHOP treatment.In TP53^(mut) patients,multiple viral regulation pathways were repressed,resulting in the inhibition of immune modulation,as revealed by gene set enrichment analysis.TP53^(mut) DLBCL exhibited increased methyltransferase SUV39H1 expression and H3K9 trimethylation(H3K9me3),contributing to repression of endogenous retroviruses(ERVs)and immunosuppressive tumor microenvironment.In TP53^(mut) DLBCL cell lines,decitabine down-regulated SUV39H1,inhibited H3K9me3 occupancy on ERVs,and triggered ERV expression,thereby unleashing interferons program and CD4^(+)T/CD8^(+)T cell activation.Molecular silencing of SUV39H1 significantly abrogated decitabine-induced H3K9me3 inhibition and ERV expression.In TP53^(mut) patient-derived xenograft models and TP53^(mut) patients,the anti-tumor effect was improved upon the use of combined treatment of decitabine and doxorubicin via SUV39H1-H3K9me3-ERVs axis.Collectively,our findings highlight an ERV regulatory circuitry in TP53^(mut) DLBCL and the crucial roles ERVs for epigenetically reprogramming tumor microenvironment for treating TP53^(mut)-driven cancers. 展开更多
关键词 TP53 ENDOGENOUS CHEMOTHERAPY
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Axial compressive behavior of GFRP‑timber‑reinforced concrete composite columns
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作者 Fubin Zhang Hu Luo +3 位作者 Jianzhuang Xiao Amardeep Singh Jing Xu hai fang 《Low-carbon Materials and Green Construction》 2023年第1期48-64,共17页
本文提出了一种由外层玻璃纤维增强复合材料(GFRP)布、内部填充泡桐木芯和钢筋混凝土组成的组合柱(GTRC柱)。对13个GTRC柱试件进行了轴心受压试验,研究了不同木芯直径、长细比和GFRP层数/铺层角度对其力学性能的影响规律。结果表明,随... 本文提出了一种由外层玻璃纤维增强复合材料(GFRP)布、内部填充泡桐木芯和钢筋混凝土组成的组合柱(GTRC柱)。对13个GTRC柱试件进行了轴心受压试验,研究了不同木芯直径、长细比和GFRP层数/铺层角度对其力学性能的影响规律。结果表明,随着木芯直径的增加,组合柱的延性和耗能能力分别增加了52.6%和21.6%,而极限承载力和初始刚度略有下降。另外,GFRP布显著提高了其极限受压承载能力、刚度、延性和能量耗散能力,分别提高了212.1%、26.6%、64.3%和3820%。此外,考虑到木芯直径的影响,提出了极限受压承载力调整系数。最后,基于力平衡原理和叠加原理,建立了GTRC柱极限承载力理论分析模型,得到了其承载力计算公式。 展开更多
关键词 玻璃纤维增强塑料 木芯 钢筋混凝土 组合柱 轴向受压
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Hepatitis B virus-associated follicular lymphoma presents T-cell inflamed phenotype and response to lenalidomide 被引量:2
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作者 Nan Wang Wei Qin +13 位作者 Zhong Zheng Ming Zhao Jie Xiong hai fang Rui Sun Yichao Wang Chen Li Lei DongXiaojian Sun Li Wang Pengpeng Xu Shu Cheng haimin Xu Fan Zhang Weili Zhao 《Cancer Communications》 SCIE 2022年第2期170-174,共5页
Dear Editor,Follicular lymphoma(FL)represents the most common subtype of indolent non-Hodgkin's lymphoma(NHL)with distinct pathological,cytogenetic,and molecular features,accounting for 9.7%of NHLs in China[1].FL ... Dear Editor,Follicular lymphoma(FL)represents the most common subtype of indolent non-Hodgkin's lymphoma(NHL)with distinct pathological,cytogenetic,and molecular features,accounting for 9.7%of NHLs in China[1].FL maintains a differentiation stage similar to germinal center(GC)B cells and is divided into grades 1,2,3A,and 3B[2].Up to 90%of FLs harbor the t(14;18)(q32;q21)/BCL2 apoptosis regula-tor(BCL2)-immunoglobulin heavy locus(IGH)transloca-tion and epigenetic modifier mutations,particularly lysine methyltransferase 2D(KMT2D)and CREB-binding pro-tein(CREBBP)[2]. 展开更多
关键词 lymphoma BCL2 NHL
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I3:A Self-organising Learning Workflow for Intuitive Integrative Interpretation of Complex Genetic Data 被引量:1
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作者 Yun Tan Lulu Jiang +1 位作者 Kankan Wang hai fang 《Genomics, Proteomics & Bioinformatics》 SCIE CAS CSCD 2019年第5期503-510,共8页
We propose a computational workflow(I3)for intuitive integrative interpretation of complex genetic data mainly building on the self-organising principle.We illustrate the use in interpreting genetics of gene expressio... We propose a computational workflow(I3)for intuitive integrative interpretation of complex genetic data mainly building on the self-organising principle.We illustrate the use in interpreting genetics of gene expression and understanding genetic regulators of protein phenotypes,particularly in conjunction with information from human population genetics and/or evolutionary history of human genes.We reveal that loss-of-function intolerant genes tend to be depleted of tissue-sharing genetics of gene expression in brains,and if highly expressed,have broad effects on the protein phenotypes studied.We suggest that this workflow presents a general solution to the challenge of complex genetic data interpretation.I3 is available at http://suprahex.r-forge.r-project.org/I3.html. 展开更多
关键词 Self-organising Human GENETICS INTERPRETATION Evolution Machine LEARNING
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