Zambia largely depends on the international second-hand car (SHC) market for their motor vehicle supply. The importation of Second hand Cars in Zambia presents a time series problem. The data used in this paper is mon...Zambia largely depends on the international second-hand car (SHC) market for their motor vehicle supply. The importation of Second hand Cars in Zambia presents a time series problem. The data used in this paper is monthly data on SHC importation from 1st January, 2014 to 31st December, 2016. Data was analyzed using Exponential Smoothing (ES) and Autoregressive Integrated Moving Average (ARIMA) models. The results showed that ARIMA (2, 1, 2) was the best fit for the SHC importation since its errors were smaller than those of the SES, DES and TES. The four error measures used were Root-mean-square error (RMSE), Mean absolute error (MAE), Mean percentage error (MPE) and Mean absolute percentage error (MAPE). The forecasts were also produced using the ARIMA (2, 1, 2) model for the next 18 months from January 2017. Although there is percentage increase of 90.6% from November 2015 to December 2016, the SHC importation generally is on the decrease in Zambia with percentage change of 59.5% from January 2014 to December 2016. The forecasts also show a gradual percentage decrease of 1.12% by June 2018. These results are more useful to policy and decision makers of Government departments such as Zambia Revenue Authority (ZRA) and Road Development Agency (RDA) in a bid to plan and execute their duties effectively.展开更多
A recently published study(Xin et al.,Prog Biochem Biophys,2026,53(2):431-441.DOI:10.3724/j.pibb.2025.0508)addresses the therapeutic challenges of pancreatic ductal adenocarcinoma(PDAC)by innovatively developing an or...A recently published study(Xin et al.,Prog Biochem Biophys,2026,53(2):431-441.DOI:10.3724/j.pibb.2025.0508)addresses the therapeutic challenges of pancreatic ductal adenocarcinoma(PDAC)by innovatively developing an orally administered nanogene delivery system.Designed to achieve in situ,efficient delivery of chimeric antigen receptor(CAR)genes to tumor sites,this approach offers a novel strategy for CAR-macrophage(CAR-M)based immunotherapy.Its key highlights are as follows.展开更多
多发性骨髓瘤(multiple myeloma,MM)是一种不可治愈的血液系统恶性肿瘤,尽管新型蛋白酶体抑制剂、免疫调节剂及CD38单抗等药物的应用显著延长了患者的生存时间,但复发耐药仍难以避免。细胞免疫治疗,特别是嵌合抗原受体(chimeric antigen...多发性骨髓瘤(multiple myeloma,MM)是一种不可治愈的血液系统恶性肿瘤,尽管新型蛋白酶体抑制剂、免疫调节剂及CD38单抗等药物的应用显著延长了患者的生存时间,但复发耐药仍难以避免。细胞免疫治疗,特别是嵌合抗原受体(chimeric antigen receptor,CAR)T细胞疗法的快速发展,极大程度的改变了复发/难治性(relapsed/refractory,R/R)MM患者的治疗现状。FDA目前已批准了2款靶向B细胞成熟抗原(B cell maturation antigen,BCMA)的CAR-T细胞产品,使其用于既往接受过4线及以上治疗的R/R MM患者。随着临床研究的不断深入,靶向GPRC5D(G protein-coupled receptor C class Group 5 member D,G蛋白偶联受体C类第5组成员D)的CAR-T细胞治疗也显示出其独特的优势。除了应用于难治复发的患者,多项临床试验支持CAR-T在MM中治疗线数的前移。本文就CAR-T细胞治疗在MM中开展的关键性临床研究展开综述,旨在为临床应用提供参考。展开更多
China's second-hand car market is like an unhealthy man.If remains unchanged,he will lose the life power. 11 years in the industry,the Beijing -based Lin Yifeng is among the first agents doing second-hand cars in ...China's second-hand car market is like an unhealthy man.If remains unchanged,he will lose the life power. 11 years in the industry,the Beijing -based Lin Yifeng is among the first agents doing second-hand cars in the city.Lin understands local consumers and has witnessed the grow-展开更多
腺病毒(Adenovirus,Ad)是一类无包膜的双链DNA病毒,能广泛感染脊椎动物,导致从轻症到严重的感染。腺病毒通过其纤突蛋白与宿主细胞表面受体结合,柯萨奇-腺病毒受体(Coxsackievirus and adenovirus receptor,CAR)是主要的介导者。CAR是...腺病毒(Adenovirus,Ad)是一类无包膜的双链DNA病毒,能广泛感染脊椎动物,导致从轻症到严重的感染。腺病毒通过其纤突蛋白与宿主细胞表面受体结合,柯萨奇-腺病毒受体(Coxsackievirus and adenovirus receptor,CAR)是主要的介导者。CAR是一种高度保守的跨膜蛋白,在多种脊椎动物中发挥关键作用。文章聚焦于CAR的生物学功能和结构特征,探讨其在腺病毒感染机制中的核心作用;重点分析了CAR与人腺病毒、禽腺病毒及其他物种腺病毒的相互作用及功能差异,揭示腺病毒与宿主受体结合的多样性和复杂性。此外,文章讨论了CAR在基因治疗中的应用前景,特别是利用CAR介导的腺病毒载体递送抗癌基因和免疫调节基因的研究进展。同时,调控CAR表达水平及阻断其与病毒结合的策略被认为是优化腺病毒治疗的重要方向。文章通过总结现有研究成果,深化了对腺病毒感染机制的认识,并为基因治疗及相关疾病的治疗策略提供了重要的理论依据和实践参考。展开更多
文摘Zambia largely depends on the international second-hand car (SHC) market for their motor vehicle supply. The importation of Second hand Cars in Zambia presents a time series problem. The data used in this paper is monthly data on SHC importation from 1st January, 2014 to 31st December, 2016. Data was analyzed using Exponential Smoothing (ES) and Autoregressive Integrated Moving Average (ARIMA) models. The results showed that ARIMA (2, 1, 2) was the best fit for the SHC importation since its errors were smaller than those of the SES, DES and TES. The four error measures used were Root-mean-square error (RMSE), Mean absolute error (MAE), Mean percentage error (MPE) and Mean absolute percentage error (MAPE). The forecasts were also produced using the ARIMA (2, 1, 2) model for the next 18 months from January 2017. Although there is percentage increase of 90.6% from November 2015 to December 2016, the SHC importation generally is on the decrease in Zambia with percentage change of 59.5% from January 2014 to December 2016. The forecasts also show a gradual percentage decrease of 1.12% by June 2018. These results are more useful to policy and decision makers of Government departments such as Zambia Revenue Authority (ZRA) and Road Development Agency (RDA) in a bid to plan and execute their duties effectively.
文摘A recently published study(Xin et al.,Prog Biochem Biophys,2026,53(2):431-441.DOI:10.3724/j.pibb.2025.0508)addresses the therapeutic challenges of pancreatic ductal adenocarcinoma(PDAC)by innovatively developing an orally administered nanogene delivery system.Designed to achieve in situ,efficient delivery of chimeric antigen receptor(CAR)genes to tumor sites,this approach offers a novel strategy for CAR-macrophage(CAR-M)based immunotherapy.Its key highlights are as follows.
文摘多发性骨髓瘤(multiple myeloma,MM)是一种不可治愈的血液系统恶性肿瘤,尽管新型蛋白酶体抑制剂、免疫调节剂及CD38单抗等药物的应用显著延长了患者的生存时间,但复发耐药仍难以避免。细胞免疫治疗,特别是嵌合抗原受体(chimeric antigen receptor,CAR)T细胞疗法的快速发展,极大程度的改变了复发/难治性(relapsed/refractory,R/R)MM患者的治疗现状。FDA目前已批准了2款靶向B细胞成熟抗原(B cell maturation antigen,BCMA)的CAR-T细胞产品,使其用于既往接受过4线及以上治疗的R/R MM患者。随着临床研究的不断深入,靶向GPRC5D(G protein-coupled receptor C class Group 5 member D,G蛋白偶联受体C类第5组成员D)的CAR-T细胞治疗也显示出其独特的优势。除了应用于难治复发的患者,多项临床试验支持CAR-T在MM中治疗线数的前移。本文就CAR-T细胞治疗在MM中开展的关键性临床研究展开综述,旨在为临床应用提供参考。
文摘China's second-hand car market is like an unhealthy man.If remains unchanged,he will lose the life power. 11 years in the industry,the Beijing -based Lin Yifeng is among the first agents doing second-hand cars in the city.Lin understands local consumers and has witnessed the grow-
文摘腺病毒(Adenovirus,Ad)是一类无包膜的双链DNA病毒,能广泛感染脊椎动物,导致从轻症到严重的感染。腺病毒通过其纤突蛋白与宿主细胞表面受体结合,柯萨奇-腺病毒受体(Coxsackievirus and adenovirus receptor,CAR)是主要的介导者。CAR是一种高度保守的跨膜蛋白,在多种脊椎动物中发挥关键作用。文章聚焦于CAR的生物学功能和结构特征,探讨其在腺病毒感染机制中的核心作用;重点分析了CAR与人腺病毒、禽腺病毒及其他物种腺病毒的相互作用及功能差异,揭示腺病毒与宿主受体结合的多样性和复杂性。此外,文章讨论了CAR在基因治疗中的应用前景,特别是利用CAR介导的腺病毒载体递送抗癌基因和免疫调节基因的研究进展。同时,调控CAR表达水平及阻断其与病毒结合的策略被认为是优化腺病毒治疗的重要方向。文章通过总结现有研究成果,深化了对腺病毒感染机制的认识,并为基因治疗及相关疾病的治疗策略提供了重要的理论依据和实践参考。
