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关键词： 计量服务   煤制油技术   化学加工   化工产品   技术路径   煤化工   煤制气   系统管理  

摘要： 一、新型煤化工的界定及技术煤化工是以煤为原料,经过化学加工使煤转化为气体、液体、固体并进一步加工成一系列化工产品的工业过程。按照产业发展成熟度和发展历程,煤化工可分为传统煤化工和新型煤化工两大类。主要技术包括煤制油技术、煤制气技术及煤制化学品等技术内容。煤制油技术、煤制气技术主要有直接法和间接法两种技术路径,煤制化学品的产品有烯烃、甲醇、二甲醚、芳烃、乙二醇等。新型煤化工具有生产技术先进、转化效率高、生产过程环保、系统管理优化、产品品质优良等特点。

关键词： 绿色化学   工艺   化学工业   促进作用  

摘要： 随着我国科学技术的不断发展,越来越多的企业开始重视绿色化学的发展前景。对于绿色化学来说,企业在日常生产过程中能够降低原材料的消耗程度,同时对环境保护产生了积极的影响。本篇论文将简单阐述绿色化学工程与工艺对化学工业的促进作用。

关键词： 林产化学工业   自立自强   创新大会   核心装备   农林剩余物   高得率制浆   废水处理工程   清洁高效  

摘要： 6月21日上午9时整,2021南京创新周以一场“紫金山创新大会”拉开帷幕。开幕式以“创新坐标、自立自强、开放合作、引领未来”四大篇章展现南京创新之路。作为紫金山创新大会重要议程之一,隆重表彰了“第十四届南京市十大科技之星”称号获得者,林产化学工业研究所房桂干研究员榜上有名。房桂干研究员多年来,致力于制浆材材性评估、清洁高得率制桨技术、废水处理工程化技术和核心装备等方面的研究工作。在农林剩余物清洁高效高得率制浆技术等方面取得突破性进展,得到国际和国内同行的广泛关注和认可。

关键词： 化工工艺   风险识别   安全评价  

摘要： 随着化工行业的不断进步和发展,化工产品种类也在迅速扩张,在生产中所涉及到的工艺需要不断进行完善和优化,化工工艺也朝着高参数、自动化、多样化的方向发展。在实际的生产过程中,需要加强对化工工艺风险识别和安全评价的相关工作,避免在化工生产过程中出现较为严重的安全事故,减少相应的安全风险和隐患,确保化工生产能够安全顺利地进行。文章主要从化工工艺目前安全评价现状进行分析,突出具体的安全评价和风险识别技术内容。

关键词： 化工工艺   节能降耗技术   应用  

摘要： 化工生产是目前人类社会发展中不可缺少的重要生产方式,为人们的生活和生产带来了诸多便利。但是,化工生产中消耗了大量的资源,如何进行化工工艺的节能降耗成为化工生产关注的重点问题。本文主要对化工生产中的能耗问题进行分析,并浅析化工工艺中常见的节能降耗技术。

关键词： 中国化学工业   曾家岩   统战工作   范旭东   工商界   企业家   人格魅力   周恩来  

摘要： 1943年2月回重庆后,李烛尘参与的社会活动日益增多。周恩来为了加强统战工作,特派秘书徐冰与李烛尘建立联系,通过徐冰的不断引导,李烛尘的思想开始发生变化。1945年9月,毛泽东在桂园举行茶话会。后来他又和工商界朋友宴请毛泽东,接着又到曾家岩周公馆再度长谈。他被毛泽东那深邃的思想和人格魅力吸引。通过三次推心置腹的交谈,他了解到共产党保护和发展民族工业的政策,备受鼓舞。

关键词： 侵权行为   技术秘密   作者详细地址   单位公章   统计资料   一稿两投   来稿须知   化学工业  

摘要： 1来稿须知1.1来稿请勿一稿两投,不得有侵权行为,本刊只接受未在国内外公开刊物上发表过的稿件。1.2稿件如涉及有关单位的统计资料:技术信息、经营情况、技术秘密等,请加盖单位公章。1.3编辑部有权对稿件进行编辑加工,如不同意修改,请提前说明。1.4来稿请注明作者详细地址、邮编,第一作者的联系电话、传真及E-mail。

关键词： accident chain network   accident propagation ability   chemical industrial park   complex network theory  

摘要： In order to better characterize the accident propagation mechanism in chemical industry park (CIP), a method combining mixed degree decomposition (MDD) algorithm with accident propagation probability is proposed to measure the accident propagation ability of nodes in the accident chain network of CIP in this paper. First, the accident chain network model of CIP is established by using complex network theory and the nodes in the network model are layered according to the accident propagation ability based on the MDD algorithm. Second, the accident propagation probability value of each node in the network is defined and calculated according to the characteristic factors of the node itself. Finally, the result of MDD algorithm is combined with the accident propagation probability value by using Euclidean distance formula, the nodes with strong accident propagation ability in the accident chain network of CIP are determined. The case analysis shows that the method has higher discrimination, can effectively measure the accident propagation ability of nodes in the accident chain network of CIP, and better identify the nodes with strong propagation ability.

关键词： Channel estimation   OFDM   Time-varying channels   Time-frequency analysis   Complexity theory   Wireless communication   Neurons   Channel estimation   deep learning   orthogonal frequency division multiplexing (OFDM)   rapidly time-varying channel  

摘要： A novel intercarrier interference (ICI)-aware orthogonal frequency division multiplexing (OFDM) channel estimation network ICINet is presented for rapidly time-varying channels. ICINet consists of two components: a preprocessing deep neural subnetwork (PreDNN) and a cascaded residual learning-based neural subnetwork (CasResNet). By fully taking into account the impact of ICI, the proposed PreDNN first refines the initial channel estimates in a subcarrier-wise fashion. In addition, the CasResNet is designed to further enhance the estimation accuracy. The proposed cascaded network is compatible with any pilot patterns and robust against mismatched system configurations. Simulation results verify the superiority of ICINet over existing networks in terms of better performance and much less complexity.

关键词： Immune checkpoint inhibitors (ICIs)   Hyperprogressive disease (HPD)   Predictors   Survival analysis  

摘要： Purpose This project aimed to survey the clinical characteristics and survivals of hyperprogressive disease (HPD) mediated by immune checkpoint inhibitors (ICIs) in an attempt to explore the potential predictors. Methods After searching PubMed, MEDLINE, Google Scholar and Cochrane Library databases, 12 studies incorporating 1766 individuals were enrolled. The data were analyzed with Review manager 5.3 software. Results The results revealed HPD correlated with previous metastatic sites > 2 (OR = 1.86, 95% CI 1.33-2.59, P = 0.0003), liver metastasis (OR = 3.35, 95% CI 2.09-5.35, P < 0.00001), Royal Marsden Hospital (RMH) score >= 2 (OR = 2.80, 95% CI 1.85-4.23, P < 0.00001), higher ECOG PS (OR = 1.60, 95% CI 1.13-2.27, P = 0.008) and LDH > upper limits of normal (ULN) (OR = 2.32, 95% CI 1.51-3.58, P = 0.0001). Instead, HPD was unrelated to gender, age, smoking status, PD-L1 expression, therapy, neutrophil-to-lymphocyte ratio, the histology, the status of EGFR, ALK and KRAS in non-small cell lung cancer and HER-2 expression in advanced gastric cancer. Moreover, HPD was evidently correlated with a shorter OS (HR = 2.92, 95% CI 1.79-4.76, P < 0.0001) and PFS (HR = 3.62, 95% CI 2.79-4.68, P < 0.00001). The same phenomena existed in stratified studies based on study regions and tumor types. Conclusions This study demonstrated that HPD was related to the number of prior metastatic sites > 2, liver metastasis, RMH score >= 2, higher ECOG PS score and LDH > ULN. Moreover, HPD was correlated with a poor OS and PFS in patients following ICI therapy.