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Journal of Renewable Materials 2020年第4期8卷 447-460页

作者： xiaozheng sun Qiang He Yu Yang College of Engineering Northeast Agricultural UniversityHarbin150030China

Agricultural waste straw is the renewable resource with the highest annual yield in the *** value-added applications of agricultural waste,dicarboxyl cellulose nanocrystals(DCCs)are prepared from rice,wheat,and corn straw by sequential periodate-chlorite *** this study,DCCs from rice,wheat,and corn straw were characterized by transmission electron microscopy(TEM),Fourier transform infrared spectrometer,X-ray diffractometer(XRD),and thermal gravimetric analysis(TGA).The carboxyl content of the DCCs was also *** results show that the crystallinity index decreased after sequential periodate-chlorite oxidation;however,the cellulose I structure was *** results show that rod-shaped DCCs with an average length and width of 287.0 nm and 9.9 nm,respectively,were successfully prepared by sequential periodate-chlorite *** carboxyl content of the DCCs was around 3.9 mmol/g,and not affected by the type of *** to study the removal of copper ions in aqueous medium were performed with the prepared *** adsorption capacities of copper ions were 131,162,and 144 mg/g for DCCs prepared from rice,wheat,and corn straws,*** results show that DCCs prepared from rice,wheat,and corn straws by sequential periodatechlorite oxidation have potential for the removal of copper ions from aqueous medium.

关键词： Agricultural waste dicarboxyl cellulose nanocrystals sequential periodate-chlorite oxidation copper ion removal

Preparation of Cellulose Nanofibrils by Multi-Site Regioselective Oxidation

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Journal of Renewable Materials 2020年第10期8卷 1269-1282页

作者： Liying Song Xixiang Pei Rui Li Haitao Chen xiaozheng sun College of Engineering Northeast Agricultural UniversityHarbin150030China Harbin Botai Biological Technology Co. Ltd.Harbin150030China

Cellulose nanofibrils(CNFs)are promising sustainable materials that can be applied to nanocomposites,as well as medical and life-sciences ***,methods for the preparation of these important materials are energy intensive because heating and mechanical disintegration are required to produce cellulose fibers below 100 nm in *** this study,CNFs were prepared through the multi-site regioselective oxidation of cellulose with 2,2,6,6-tetramethylpiperidine-1-oxyl(TEMPO)and periodate at room temperature(20–25°C),without any mechanical-disintegration *** electron microscopy(TEM)revealed that the CNFs had the average widths of 14.1,55.4,and 81.9 nm for three different ***-transform infrared spectroscopy revealed that carboxyl groups were created on the surfaces of the microfibrils,while X-ray diffraction studies showed that the cellulose I structure was maintained after oxidation,and that the cellulose nanofibril crystallinity index exceeded 70%.These results demonstrate that CNFs can be prepared by multi-site regioselective oxidation at room temperature in the absence of mechanical disin*** addition,a model was developed to calculate the total content of carboxylate and aldehyde groups of CNFs prepared by the TEMPO mediate oxidation,the periodate oxidation,and the multi-site regioselective oxidation methods based on the particle width determined by *** calculated values of the model were in good agreement with the total content(experimental value)of carboxylate and aldehyde groups of CNFs prepared by the TEMPO-mediated oxidation and the multi-site regioselective oxidation ***,the model was not valid for CNFs prepared by the periodate oxidation method.

关键词： Cellulose nanofibril multi-site regioselective oxidation total content of carboxylate and aldehyde groups particle width

Adsorption Properties and Cost of Dicarboxylic Nanocellulose on Copper Ions for Wastewater Treatment

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Journal of Renewable Materials 2022年第3期10卷 751-766页

作者： xiaozheng sun Yu Yang Qiang He Jianye Li Rui Li Haitao Chen College of Engineering Northeast Agricultural UniversityHarbin150030China College of Mechanical Engineering Jiamusi UniversityJiamusi154007China

The accumulation of Cu^(2+)in water is a potential threat to human health and *** nano-cellulose(DNC)with rich carboxyl groups was prepared through the NaIO_(4)–NaClO_(2) sequential oxidation meth-od to efficiently remove copper ions,and the Cu 2+adsorption properties and cost were *** maximum adsorption capacity reached 184.2 mg/g at pH 6 and an adsorbent dose of 5 g/***,the maximum adsorption capacities of monocarboxylic nanocellulose(MNC),DNC,and tricarboxylic nanocellulose(TNC)with carboxyl groups as the main adsorption sites were calculated to be 228.7,261.3,and 148.1 mg/g,*** Cu^(2+)adsorption costs of MNC,DNC,and TNC were calculated and compared with those of powdered activated carbon(PAC).The Cu^(2+)adsorption capacity of DNC is higher than that of PAC,and the adsorption cost is close to or lower than that of PAC,demonstrating that the DNC prepared by sequential oxidation of NaIO_(4)–NaClO_(2) has competitive adsorption capacity and cost in the treatment of wastewater containing Cu^(2+).

关键词： Nanocellulose heavy metal ions maximum adsorption capacity adsorption cost

长春市新城区开放式住区被害恐惧感分析与优化策略研究

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西安建筑科技大学学报（自然科学版） 2022年第1期54卷 134-141页

作者：王科奇尤月孙小正吉林建筑大学建筑与规划学院吉林长春130118 中国电力工程顾问集团东北电力设计院有限公司吉林长春130021

开放式住区是我国城市住区的重要形式之一.长春市新城区的开放式住区存在领域性不强、环境维护管理不到位等问题,易诱发居民的被害恐惧感.通过调查问卷采集长春市新城区典型开放式住区被害恐惧感的基础数据,借助SPSS软件的数理量化分析... 详细信息

开放式住区是我国城市住区的重要形式之一.长春市新城区的开放式住区存在领域性不强、环境维护管理不到位等问题,易诱发居民的被害恐惧感.通过调查问卷采集长春市新城区典型开放式住区被害恐惧感的基础数据,借助SPSS软件的数理量化分析工具,采用“因子分析”对被害恐惧感的多种空间环境影响因素进行降维,归结成四组主要的影响因子,再通过“回归分析”对各因子的影响强度大小进行排序,在此基础上构建影响因素模型,然后借鉴“通过环境设计预防犯罪(CPTED)”策略有针对性地改善影响被害恐惧感的环境因素,减弱环境参与者的被害恐惧感.

关键词：长春市新城区开放式住区被害恐惧感

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采用不同体位行甲状腺手术效果观察

护理研究 2008年第29期22卷 2676-2677页

作者：孙晓铮山东省聊城市人民医院

随着现代麻醉学的发展,局部麻醉病人知晓术中情况对病人术后心灵创伤的影响已越来越被医务工作者所重视.手术室护理是围绕手术这一特殊时期,针对手术和麻醉对病人造成的心理、生理功能紊乱而采取的各种护理措施.手术全过程保障病人心理... 详细信息

随着现代麻醉学的发展,局部麻醉病人知晓术中情况对病人术后心灵创伤的影响已越来越被医务工作者所重视.手术室护理是围绕手术这一特殊时期,针对手术和麻醉对病人造成的心理、生理功能紊乱而采取的各种护理措施.手术全过程保障病人心理、身体舒适是一种'以病人为中心'的护理理念的重要体现.

关键词：甲状腺手术体位术前全身麻醉心率观察组体位训练甲状腺手术改良体位膈神经颈丛巡回护士病人术后头痛颈丛麻醉手术操作头颈部血氧饱和度精神创伤心理创伤术中血压

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甲状腺手术体位综合干预的观察与研究

护士进修杂志 2014年第17期29卷 1567-1568页

作者：孙晓铮山东省聊城市人民医院手术室山东聊城252000

目的观察甲状腺手术中应用钢丝罗纹气管插管以降低颈部过伸的角度并进行综合体位干预,以减轻或避免病人术后颈过伸脑循环紊乱综合征的效果。方法将410例甲状腺手术病人随机分成两组,对照组216例,采用普通气管插管和常规体位;观察组194例... 详细信息

目的观察甲状腺手术中应用钢丝罗纹气管插管以降低颈部过伸的角度并进行综合体位干预,以减轻或避免病人术后颈过伸脑循环紊乱综合征的效果。方法将410例甲状腺手术病人随机分成两组,对照组216例,采用普通气管插管和常规体位;观察组194例,术中应用钢丝罗纹管并行综合体位干预。观察两组病人术后颈过伸脑循环紊乱综合征的发生率。结果观察组头痛、恶心呕吐、腰背痛等脑循环紊乱综合征的发生率均明显低于对照组(P<0.01)。结论甲状腺手术中应用综合干预的手术体位,可避免或降低头痛、腰背痛等脑循环紊乱综合征的发生。

关键词：甲状腺手术体位综合干预护理

综合护理干预在降低手术室患者手术应激中的应用

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国际护理学杂志 2014年第12期33卷 3288-3290页

作者：孙晓铮山东省聊城市人民医院 252000

目的：探讨综合心理护理措施在缓解手术室患者手术应激中的应用效果。方法将100例行手术治疗的患者采用随机法分为观察组和对照组，对照组采用手术室常规护理，观察组在对照组的基础上进行综合心理护理干预，比较两组的手术应激情况以... 详细信息

目的：探讨综合心理护理措施在缓解手术室患者手术应激中的应用效果。方法将100例行手术治疗的患者采用随机法分为观察组和对照组，对照组采用手术室常规护理，观察组在对照组的基础上进行综合心理护理干预，比较两组的手术应激情况以及护理满意度。结果观察组手术开始时的心率、舒张压和收缩压低于对照组，术中肌肉紧张程度好于对照组，术后疼痛评分低于对照组，均有统计学意义（ P＜0.05）。观察组术后焦虑、抑郁评分低于对照组，在生理、心理、社会环境、文化方面的舒适度评分均高于对照组，护理满意度高于对照组，有统计学意义（ P＜0.05）。结论心理护理是人性化护理的重要体现，能够有效提高护理质量，降低手术室患者的手术应激，保证手术顺利进行。

关键词：心理护理手术室手术应激护理满意度

Adaptive Fault-tolerant Model Matching Control of Distributed Delay Systems with Non-ideal Actuators and Communications

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Adaptive Fault-tolerant Model Matching Control of Distribute...

基于CPTED理论的和谐美的住区环境设计策略浅析

第三十届中国控制会议

作者： JIN xiaozheng,LI Yanping,sun Shengqi Key Laboratory of Manufacturing Industrial Integrated Automation,Shenyang University,Shenyang 110044,P.R.China

＜正＞This paper develops direct adaptive-state feedback control schemes to solve the robust tracking control problem for a class of distributed systems with actuator failures,faulty and perturbed communications,external disturbances,and networked time-varying *** adaptation laws are proposed to update the controller parameters on-line when all the eventual faults, upper bounds of perturbations and disturbances,and networked delays are *** a class of distributed state feedback controllers is constructed for automatically compensating the fault,perturbation,disturbance and time-delay effects based on the information from adaptive *** proposed distributed adaptive tracking controller can guarantee that the resulting adaptive closed-loop system is stable and the tracking error decreases asymptotically to zero with the delayed *** proposed adaptive design technique is finally evaluated in the light of an example.

关键词： Adaptive Fault-tolerant Control Distributed Delay Systems Model Matching Control Non-ideal Actuators and Communications

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安徽建筑大学学报 2021年第5期29卷 1-6,44页

作者：王科奇孙小正吉林建筑大学建筑与规划学院吉林长春130118

和谐美是高品质住区环境设计的重要目标,关注安全和美观双重因素的和谐统一,兼顾人们视觉和心理双重感受的环境体验。但很多住区环境设计却往往顾此失彼,忽视了二者的协调性。借助CPTED策略,解析安全和美观在营造和谐美的住区环境设计... 详细信息

和谐美是高品质住区环境设计的重要目标,关注安全和美观双重因素的和谐统一,兼顾人们视觉和心理双重感受的环境体验。但很多住区环境设计却往往顾此失彼,忽视了二者的协调性。借助CPTED策略,解析安全和美观在营造和谐美的住区环境设计中的耦合效应。通过探寻美观和安全两个基本需求的契合点,从二者在住区环境中的设计原则、设计着眼点、设计策略等方面进行分析,提出共同营造和谐美住区环境的优化建议。在营造视觉和心理双重美感的同时,创造安全感高的住区环境。

关键词： CPTED 和谐美住区环境美观安全

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青贮饲料对青贮池墙体侧压力的试验研究

农业工程学报 2007年第7期23卷 196-201页

作者：王美芝刘继军孙晓征吴中红李俊鹏贾海东王永玉中国农业大学动物科技学院北京三元绿荷奶牛养殖中心第一牧场北京101105 北京三元绿荷奶牛养殖中心半截河奶牛场北京101105

研究青贮饲料对青贮池墙体的侧压力对青贮池结构设计至关重要。为定量分析青贮饲料装填以及车辆碾压饲料时墙体的受力状态,以北京三元绿荷奶牛养殖中心半截河奶牛场青贮池为研究对象,在青贮池墙体上布置压力计,研究了侧压力大小及其变... 详细信息

研究青贮饲料对青贮池墙体的侧压力对青贮池结构设计至关重要。为定量分析青贮饲料装填以及车辆碾压饲料时墙体的受力状态,以北京三元绿荷奶牛养殖中心半截河奶牛场青贮池为研究对象,在青贮池墙体上布置压力计,研究了侧压力大小及其变化规律。结果表明:装填青贮饲料时,自墙顶向下在深度为0.65～1.37 m时,侧压力平均值随深度增大而增大;在深度为1.37～2.05 m时,侧压力平均值随深度增加的幅度较小。推土机碾压饲料会增加墙体侧压力,并且侧压力值随推土机和墙体之间距离的变小而增大。侧压力增加值与压力计埋深无明显相关关系。

关键词：青贮池墙体侧压力青贮饲料