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Estimation of Enthalpy of Formation Using Benson’s Group Addition and Functional Group Correction

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Chemical Research in Chinese Universities 2023年第2期39卷 296-304页

作者： LI Xianlan LUAN Yue LU Yanhua LI Wei MA Lihong zhang qingyou PANG Aimin Henan Engineering Research Center of Industrial Circulating Water Treatment Henan Joint International Research Laboratory of Environmental Pollution Control MaterialsHenan UniversityKaifeng475004P.R.China Science and Technology on Aerospace Chemical Power Laboratory Hubei Institute of Aerospace ChemotechnologyXiangyang441003P.R.China Laboratory&Equipment Managements Service Dalian University of TechnologyDalian116024P.R.China

The enthalpies of formation of solid organic compounds containing carbon,nitrogen,oxygen,and hydrogen were estimated using two suggested descriptor sets,separately,by machine learning *** two descriptor sets are both composed of descriptors of Benson’s groups and corrected *** main differences between them are that one is generated based on atoms and the other is based on *** in-house program was specially written in Java to extract all the descriptors with a function to ensure that each atom(or bond)of a molecule is represented by Benson’s groups once for an atom-based(or bond-based)descriptor *** linear regression and partial least squares were used,separately,to build models to predict the enthalpy of formation for two descriptor *** combination of the models constructed by two descriptor sets based on the atoms and the bonds achieved the best-predicted results in this paper,and the corresponding results of the test set are better than that in the literature,from which the original data were ***,a small data set of fluorinated molecules was collected,and satisfactory results were also obtained for these molecules containing fluorine with the assistance of the former data set.

关键词： Enthalpy of formation Group contribution method Benson’s group Multiple linear regression Partial least square

Clinical features and management of postural tachycardia syndrome in children： a single-center experience

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Chinese Medical Journal 2014年第21期127卷 3684-3689页

作者： Li Jiawei zhang qingyou Hao Hongjun Jin Hongfang Du Junbao Department of Pediatrics Peking University First Hospital Beijing 100034 China Department of Neurology Peking University First Hospital Beijing 100034 China

Background The incidence of postural tachycardia syndrome （POTS） has been increasing in children and adolescents,while clinical characteristics of POTS in the pediatric population are not fully *** An observational study was performed in 150 pediatric patients aged between 5 and 18 years who underwent head-up tilt test （HUTT） with the diagnosis of POTS at Peking University First Hospital from March 2008 to August *** data,clinical presentation,autonomic parameters,laboratory findings,and treatments were *** POTS in children commonly occurred in the age of 7-14 *** （84.00％） was the most common symptom,followed by weakness （72.00％） and orthostatic syncope （62.67％）.Positive family history of orthostatic intolerance （Ol） was found in 24.64％ of children with *** 33.09％ of them had preceding infection history as precipitating *** percent of them suffered from orthostatic *** status was documented in 51.28％ of 39 patients who were tested for the standing norepinephrine *** than half of POTS patients,with 24-hour urinary sodium level ＜124 mmol/24 hours,were suitable for treatment of salt *** least 25.74％ of POTS patients were of positive acetylcholine receptor （AChR） *** iron storage in children with POTS was relatively *** patients responded well to treatments,43.51％ of patients recovered,while 7.63％ of them had relapse after symptoms *** POTS is a relatively common condition with complex pathophysiology and heterogeneous clinical manifestation.A comprehensive therapeutic regimen is recommended for the treatment.

关键词： postural tachycardia syndrome children orthostatic intolerance

Kawasaki disease shock syndrome: A report of two cases and literature review

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Pediatric Investigation 2019年第2期3卷 81-85页

作者： qingyou zhang Ying Liao Junbao Du Department of Pediatrics Peking University First HospitalBering 100034China

Importance:Kawasaki disease shock syndrome (KDSS) is a rare Kawasaki disease (KD) *** pediatricians are not aware of the full range of clinical characteristics of ***:We aimed to investigate the clinical features,diagnosis and treatment of KDSS in two patients and we included a literature ***:We collected and analyzed the clinical data for two patients with ***,using 'Kawasaki diseases shock syndrome' as a key phrase,we searched PubMed,Biotechnology Information and Wanfang Data Knowledge Service Platform databases for any similar reports between January 2009 and March ***:Both of our patients diagnosed with KD developed sustained hypotension during the course of intravenous immunoglobulin treatment,as well as hypoalbuminemia,and increased C-reactive protein and brain natriuretic peptide levels during *** patients responded well to fluid resuscitation and inotropic *** aneurysms formed in either patient during *** reviewed two related studies in Chinese and 11 studies in ***:KD may present with severe shock,and requires proper diagnosis and rapid *** prognosis for most patients with KDSS is excellent.

关键词： Brain natriuretic peptide Children Kawasaki disease Shock

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在局域网上组建视听网络课室

中国电化教育 2002年第8期 76-78,79页

作者：张庆有广州市广东外语外贸大学教育技术中心 510420

所谓视听网络课室就是运用网络功能实现视频、音频点播并且具有交互功能及数据库处理的网络.也就是说,组建视听网络课室必须考虑的问题有:(1)硬件环境;(2)软件环境;(3)相应的课件.

关键词：硬件配置操作系统局域网视听网络课堂

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川崎病诊断中的若干问题

中华实用儿科临床杂志 2020年第13期35卷 961-964页

作者：张清友杜军保北京大学第一医院儿科 100034

川崎病是一种急性自限性的中型动脉血管炎,目前已经成为发达国家最常见的小儿获得性心脏病的病因。如果不能得到及时的诊断及治疗,约25%的患儿会出现严重的冠状动脉病变。由于川崎病缺乏特异性的诊断手段,诊断川崎病主要依赖于临床诊断... 详细信息

川崎病是一种急性自限性的中型动脉血管炎,目前已经成为发达国家最常见的小儿获得性心脏病的病因。如果不能得到及时的诊断及治疗,约25%的患儿会出现严重的冠状动脉病变。由于川崎病缺乏特异性的诊断手段,诊断川崎病主要依赖于临床诊断标准,因此,对于典型的川崎病诊断不难,但对于表现不完全和不典型的川崎病诊断却面临极大的挑战,尤其是在目前全世界都面临的新型冠状病毒流行情况下,使川崎病的诊断更为复杂。本文结合最近美国心脏病协会发表的川崎病诊治指南,对川崎病诊断中的热点问题给予详细的阐述,希望能对川崎病患儿的诊断有所帮助。

关键词：川崎病诊断儿童

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废旧电子产品逆向物流的政府规制分析

江苏科技大学学报（自然科学版） 2008年第6期22卷 62-66页

作者：代逸生张清优张俊毅江苏科技大学经济管理学院江苏镇江212003

在废旧电子产品逆向物流的构建和运作过程中,政府起着重要而不可替代的作用.为了更好地发挥政府的宏观调控作用,建立了政府与企业关于法律管制方面的博弈模型,得出了双方合作的优化策略,并且建立了政府的财政补贴模型,在存在最低收购价... 详细信息

在废旧电子产品逆向物流的构建和运作过程中,政府起着重要而不可替代的作用.为了更好地发挥政府的宏观调控作用,建立了政府与企业关于法律管制方面的博弈模型,得出了双方合作的优化策略,并且建立了政府的财政补贴模型,在存在最低收购价格的情况下,对政府的财政补贴标准进行了讨论.这些理论结果为政府在政策制定,企业在物流体系构建方面提供理论依据及参考.

关键词：废旧电子产品逆向物流静态博弈财政补贴

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Happy to Return Home

China's Tibet 1999年第3期10卷 42-42页

作者： zhang qingyou

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手性拓扑电荷指数和构效关系研究

计算机与应用化学 2004年第6期21卷 849-851页

作者：王俊张庆友董林许禄中国科学院长春应用化学研究所吉林长春130022

对拓扑电荷指数进行了扩展,得到了含电负性的手性拓扑电荷指数。将其与Julián-Qrtiz 等人对该指数的扩展结果相比较,结果表明,新的拓扑指数能够得到更好的QSAR 模型。进一步运用人工神经网络法构造了数学模型,该模型能够更好地预测手... 详细信息

对拓扑电荷指数进行了扩展,得到了含电负性的手性拓扑电荷指数。将其与Julián-Qrtiz 等人对该指数的扩展结果相比较,结果表明,新的拓扑指数能够得到更好的QSAR 模型。进一步运用人工神经网络法构造了数学模型,该模型能够更好地预测手性化合物的活性。

关键词：手性拓扑电荷指数构效关系多巴胺受体 3-苯基哌啶类化合物

以咽旁间隙炎症为主要表现的不完全川崎病1例报告并文献复习

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临床儿科杂志 2020年第12期38卷 912-914页

作者：毛雨鸽孙燕张清友北京大学第一医院儿科北京100034

目的探讨以咽旁间隙炎症为主要表现的不完全川崎病(KD)的临床特征及诊疗。方法回顾分析2019年12月收治的1例主要表现为咽旁间隙炎症的KD患儿的临床资料,并进行文献复习。结果患儿男性,6岁。发热9天,颈部疼痛伴淋巴结肿大,躯干部少许皮疹... 详细信息

目的探讨以咽旁间隙炎症为主要表现的不完全川崎病(KD)的临床特征及诊疗。方法回顾分析2019年12月收治的1例主要表现为咽旁间隙炎症的KD患儿的临床资料,并进行文献复习。结果患儿男性,6岁。发热9天,颈部疼痛伴淋巴结肿大,躯干部少许皮疹。C反应蛋白及红细胞沉降率显著升高,予对症退热及抗生素治疗无效。超声心动图示左冠状动脉轻度扩张。颈部MRI示咽旁间隙炎症。患儿予大剂量丙种球蛋白、阿司匹林治疗后,体温恢复正常,颈部红肿疼痛消失,炎症指标逐渐降至正常。复查颈部MRI示病灶较前减小,同时在病程14天患儿手指甲床出现典型的皮肤移行处的膜样脱皮。确诊为不完全KD。共检索到外文文献40篇,报道200余例,中文文献1篇,报道1例。结论以咽后壁或咽旁间隙炎症为首发表现的KD少见,临床需尽早评估和治疗。

关键词：川崎病咽旁间隙炎症