检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

旋转闪蒸干燥器干燥酒糟过程的实验研究

化学工程 2006年第2期34卷 13-15页

作者：冯殿义孙彤辽宁工学院机械及自动化学院辽宁锦州121001 辽宁工学院材料与化学工程学院辽宁锦州121001

为获得旋转闪蒸干燥器干燥啤酒糟过程的最佳操作工况,对不同操作条件下的啤酒糟含水质量分数进行了测试,依据实验数据关联出了啤酒糟含水质量分数的计算公式。在此基础上对干燥过程进行寻优计算,得出干燥器所能达到的最低含水质量分数为... 详细信息

为获得旋转闪蒸干燥器干燥啤酒糟过程的最佳操作工况,对不同操作条件下的啤酒糟含水质量分数进行了测试,依据实验数据关联出了啤酒糟含水质量分数的计算公式。在此基础上对干燥过程进行寻优计算,得出干燥器所能达到的最低含水质量分数为3.92%,与实际对比误差为2.08%。满足要求含水质量分数(小于8%),处理量为75 kg时能量消耗最低的操作参数为进风温度94.9℃、轴向风速4.46 m/s,175 kg时进风温度155.9℃、轴向风速3.29 m/s,与实际对比误差小于1.65%。

关键词：啤酒糟旋转闪蒸干燥回归模型优化

Laser irradiation of graphite foils as robust current collectors for high-mass loaded electrodes of supercapacitors

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2022年第12期41卷 4094-4103页

作者： Xi-tong sun Yi Wan Bin Wang Qian Xu Xiao-Ling Teng Hai-Yan Liu Yu-Juan Wang Shi-Wei Guo Cheng-Hao Wu Han Hu Ming-Bo Wu State Key Laboratory of Heavy Oil Processing Institute of New EnergyCollege of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China School of Chemistry Lancaster University New Energy Division Shandong Energy Group Co.LtdZoucheng 273500China

Conductive substrates with low cost,lightweight,and chemical stability have been highly recognized as alternative current collectors for energy storage *** foil is promising to fulfill these requests,whereas the inert surface chemistry denies its possibility as the carrier with high-mass loading active ***,we report a facile yet efficient laser-mediated strategy to fast regulate graphite foils for robustly loading active *** smooth and hydrophobic graphite foil surface turned to be a rough,super-hydrophilic one containing oxygen-rich clusters after *** reconstructed surface affords anchors for active species,such as nanostruetured MnO_(2),FeOOH,and Fe_(2)O_(3),with the highest loading mass of 20 mg·cm^(-2).The high-mass loading MnO_(2)electrode offers an areal capacitance of 3933 mF·cm^(-2)at 1 mA·cm^(-2).Then,the asymmetric supercapacitor,fabricated by MnO_(2)and Fe_(2)O_(3)deposited laser-irradiated graphite foils,exhibits improved performance with high energy density,large power capability,and long-term *** strategy suggests a reliable way to produce alternative current collectors for robust energy storage devices.

关键词： Laser irradiation Graphite foils High-mass loading Current collectors Supercapacitors

Effi cacy and safety of low-dose corticosteroids for acute respiratory distress syndrome:A systematic review and meta-analysis

在线全文

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2021年第3期12卷 207-213页

作者： Yu-qing Cui Xian-fei Ding Huo-yan Liang Dong Wang Xiao-juan Zhang Li-feng Li Quan-cheng Kan Le-xin Wang tong-wen sun General ICU the First Affi liated Hospital of Zhengzhou UniversityHenan Key Laboratory of Critical Care MedicineZhengzhou Key Laboratory of SepsisHenan Engineering Research Center for Critical Care MedicineZhengzhou 450052China Biotherapy Center the First Affi liated Hospital of Zhengzhou UniversityZhengzhou 450052China Department of Pharmacy the First Affi liated Hospital of Zhengzhou UniversityZhengzhou 450052China School of Biomedical Sciences Charles Sturt UniversityWagga Wagga 2650Australia

BACKGROUND:There are confl icting results regarding whether corticosteroids have better effi cacy than placebo in acute respiratory distress syndrome(ARDS)***,we aim to further evaluate the effi cacy and safety of corticosteroids in adult ARDS ***:The databases,including Medline,EMBASE,and Cochrane Central Register of Controlled Trials(CENTRAL)in the Cochrane Library,were searched from their inception to May 2,*** controlled trials(RCTs)and observational cohort studies were selected to assess the use of corticosteroids in adult ARDS *** quality of the results was judged by the Grading of Recommendations Assessment,Development,and Evaluation(GRADE)*** inverse-variance method with random or fixed effects modeling was used to compute pooled odds ratio(OR),standardized mean diff erence(SMD),and their 95%confi dence interval(CI).RESULTS:Eight eligible RCTs and six cohort studies were *** use of corticosteroids was associated with reduced mortality(OR 0.57,95%CI 0.43-0.76,I2=35.1%,P=0.148)in ARDS patients,and the result was confirmed in the included cohort studies(OR 0.51,95%CI 0.27-0.95,I2=66.7%,P=0.010).The subgroup analysis stratified by the initiation time and duration of corticosteroid use showed that early ARDS and prolonged corticosteroid use had signifi cant survival benefits in the *** low-dose corticosteroid use was also associated with significantly more ventilator-free days and a reduced rate of new infections in ARDS ***:The low-dose corticosteroid therapy may be safe and reduce mortality,especially in patients with prolonged treatment and early ARDS.

关键词： Low-dose Corticosteroid Acute respiratory distress syndrome Mortality Systematic review Meta-analysis

企业家为何要进行媒体呈现--基于企业家微博的实证检验

在线全文

学校读者我要写书评

暂无评论

经济理论与经济管理 2020年第7期40卷 88-99页

作者：孙彤浙江万里学院商学院 315100

随着社交媒体的广泛应用,越来越多的企业家从企业幕后走向台前。本文利用中国上市公司2010—2017年企业家新浪微博的使用数据进行了实证检验。结果发现:(1)高科技企业更倾向于企业家媒体呈现;(2)企业家媒体呈现能够提升企业股票流动性,... 详细信息

随着社交媒体的广泛应用,越来越多的企业家从企业幕后走向台前。本文利用中国上市公司2010—2017年企业家新浪微博的使用数据进行了实证检验。结果发现:(1)高科技企业更倾向于企业家媒体呈现;(2)企业家媒体呈现能够提升企业股票流动性,且微博发布数量越多,股票流动性上升越明显;(3)进一步对企业家微博内容进行文本分析后发现,相比于披露式微博,个性化微博更有助于提升股票流动性,正向情感倾向和负向情感倾向微博均会导致股票流动性的提升。本文结论为信息化时代企业转型升级过程中的企业家行为提供重要参考。

关键词：媒体呈现企业家微博高科技企业股票流动性

Changes in posterior corneal elevation after small incision lenticule extraction for different myopic diopters

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2024年第3期17卷 491-498页

作者： Xiao-tong sun Yang Zhang Xiao-Kun Mei Nan-Nan Zheng Ling-Zhi Niu Xiao-Li Qu Ai-Ping Song Jian Zhuo Department of Ophthalmology the First Affiliated Hospital of Shandong First Medical UniversityShandong Provincial Qianfoshan HospitalJinan 250014Shandong ProvinceChina

●AIM:To study the changes and effect factors of posterior corneal surface after small incision lenticule extraction(SMILE)with different myopic diopters.●METHODS:Ninety eyes of 90 patients who underwent SMILE were included in this retrospective *** were allocated into three groups based on the preoperative spherical equivalent(SE):low myopia(SE≥-3.00 D),moderate myopia(-3.00 D>SE>-6.00 D)and high myopia(SE≤-6.00 D).Posterior corneal surfaces were measured by a Scheimpflug camera preoperatively and different postoperative times(1wk,1,3,6mo,and 1y).Posterior mean elevation(PME)at 25 predetermined points of 3 concentric circles(2-,4-,and 6-mm diameter)above the best fit sphere was analyzed.●RESULTS:All surgeries were completed uneventfully and no ectasia was found through the *** difference of myopia group was significant at the 2-mm ring at 1 and 3mo postoperatively(1mo:P=0.017;3mo:P=0.018).The effect of time onΔPME was statistically significant(2-mm ring:P=0.001;4-mm ring:P<0.001;6-mm ring:P<0.001).The effect of different corneal locations onΔPME was significant except 1wk postoperatively(1mo:P=0.000;3mo:P=0.000;6mo:P=0.001;1y:P=0.001).Posterior corneal stability was linearly correlated with SE,central corneal thickness,ablation depth,residual bed thickness,percent ablation depth and percent stromal bed thickness.●CONCLUSION:The posterior corneal surface changes dynamically after *** protrusion is observed on the posterior corneal surface in patients with different degrees of myopia within one year after *** has good stability,accuracy,safety and predictability.

关键词： myopia posterior corneal elevation corneal ectasia small incision lenticule extraction

美日印澳战略互动对地区秩序的影响——基于体系结构视角的分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

东北亚论坛 2021年第6期30卷 93-105,126页

作者：孙通山东师范大学马克思主义学院华东师范大学国际关系与地区发展研究院济南250358

国际体系单元间的实力变化以及互动关系不仅影响着体系结构转变的进程与方向,还间接推动着地区秩序的形成、维系、转型与重塑。受"制衡中国"的共同战略考量以及美日拉拢的影响,美日印澳四国在"印太"地区围绕安全、经济和价值观议题的战... 详细信息

国际体系单元间的实力变化以及互动关系不仅影响着体系结构转变的进程与方向,还间接推动着地区秩序的形成、维系、转型与重塑。受"制衡中国"的共同战略考量以及美日拉拢的影响,美日印澳四国在"印太"地区围绕安全、经济和价值观议题的战略互动明显加强。这不仅加剧了四国与中国的紧张关系,还日益冲击着地区的原有权力、制度、观念结构,促动地区秩序的整合与重塑。但同时,四国在"印太"合作中的利益考量、立场选择与目标设定并不完全一致,四国内部也存在着张力。这些因素相互交织,制约了美日印澳战略合作的广度和深度,增加了"印太"地区秩序重组的不确定性。

关键词：美日印澳 “四边安全对话” 地区秩序单元互动体系结构

改良腓肠肌腱膜瓣翻转修复新鲜跟腱断裂的临床疗效

在线全文

学校读者我要写书评

暂无评论

中华医学杂志 2012年第17期92卷 1206-1208页

作者：王东孙彤首都医科大学附属北京安贞医院骨科 100029

目的评价腓肠肌腱膜瓣翻转粗糙面朝前治疗新鲜跟腱断裂的手术疗效及方法。方法选取2007年5月至2010年1月急诊跟腱断裂入院患者32例，男20例，女12例，年龄22-45岁，均为运动致伤，跟腱完全断裂。均行手术治疗，手术方法：跟腱内侧直切... 详细信息

目的评价腓肠肌腱膜瓣翻转粗糙面朝前治疗新鲜跟腱断裂的手术疗效及方法。方法选取2007年5月至2010年1月急诊跟腱断裂入院患者32例，男20例，女12例，年龄22-45岁，均为运动致伤，跟腱完全断裂。均行手术治疗，手术方法：跟腱内侧直切口，长约5cm，在较长拉钩的帮助下切取腓肠肌腱膜瓣翻转使粗糙面朝前修复新鲜断裂的跟腱，术后早期进行功能锻炼。平均随访18个月，根据Arner Lindholm评分标准对治疗效果进行评价。结果32例患者均获得随访，32例患者随访1年以上。所有患者皮肤愈合良好，3周时换短腿石膏练习膝关节屈伸功能。6周时可以完全去除石膏开始功能锻炼，8周时踝关节屈伸功能接近正常，9周时可以穿平跟鞋练习行走，12周可以练习慢跑。患者最终评价结果：优24例，良6例，差2例，优良率93．8％。结论腓肠肌腱膜瓣翻转修复新鲜跟腱断裂疗效良好，可以使患者早期进行功能锻炼，术后早期功能锻炼是获得良好疗效的关键。

关键词：跟腱修复外科手术肌,骨骼

锰基改性生物炭对弱碱性Cd污染土壤团聚体结构以及Cd含量特征的影响

在线全文

学校读者我要写书评

暂无评论

环境科学 2020年第7期41卷 3426-3433页

作者：孙彤付宇童李可徐应明孙约兵农业农村部环境保护科研监测所农业农村部产地环境污染防控重点实验室天津市农业环境与农产品安全重点实验室天津300191 东北农业大学资源与环境学院哈尔滨150030

通过田间试验,探究锰基改性稻壳生物炭对弱碱性Cd污染土壤有机碳含量、团聚体结构以及团聚体各粒级的Cd质量负载和有效态含量的影响.结果表明,施加改性生物炭,土壤有机碳含量表现为随着改性生物炭施加量的增加而呈现出逐渐升高的趋势,... 详细信息

通过田间试验,探究锰基改性稻壳生物炭对弱碱性Cd污染土壤有机碳含量、团聚体结构以及团聚体各粒级的Cd质量负载和有效态含量的影响.结果表明,施加改性生物炭,土壤有机碳含量表现为随着改性生物炭施加量的增加而呈现出逐渐升高的趋势,较对照增加了3.2%~32.0%.改性生物炭对土壤团聚体的分布结构和稳定性具有改良作用,增加了大团聚体(5~8 mm和2~5 mm粒级)所占的质量分数,微团聚体(≤0.25 mm)则受到抑制,土壤团聚体平均质量直径(GWD)、几何平均直径(MWD)和土壤团粒结构体(R0.25)较对照分别增加了15.1%~20.3%、 8.1%~22.4%和0.43%~7.6%.Cd含量主要富集在团聚体小颗粒中,其在土壤团聚体各粒级的质量负载随粒径的减小而逐渐增大.Cd分布因子在0.5~1 mm和0.25~0.5 mm粒级中表现出明显富集状况,而在5~8 mm和2~5 mm粒径中表现出明显亏损状态.与对照相比,添加改性生物炭降低了全土和土壤团聚体各粒级中DTPA-Cd含量,其中在5~8、 2~5、 0.5~1.0和0.25~0.5 mm粒径中分别降低了7.6%~15.1%、 15.6%~24.3%、 3.6%~13.8%和11.6%~13.7%(P<0.05).总体而言,改性生物炭不仅对污染土壤团聚体的结构具有良好的优化作用,而且能够降低不同粒径土壤中Cd有效态含量,达到阻控修复Cd污染的目的.

关键词：锰基改性生物炭团聚体 Cd污染弱碱性土壤钝化修复

Management guidelines for preventing exposure to antineoplastics

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2023年第1期35卷 1-10页

作者： Wei Liu Ziyang Wul tong sun Shuyao Liang Jun Zhu Suodi Zhail 无 Department of Pharmacy Peking University Third HospitalBeijing 100191China Institute for Drug Evaluation Peking University Health Science CenterBeijing 100191China Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) Department of LymphomaPeking University Cancer Hospital&InstituteBeijing 100142China Division of Therapeutic Drug Monitoring of Chinese Pharmacological Society Hospital Pharmacy Professional Committee of Chinese Pharmaceutical Association Oncology Society of Chinese Medical Association Nursing Branch of China International Exchange and Promotive Association for Medical and Healthcare Division of Drug-induced Diseases of Chinese Pharmacology Society

***2.1 Guideline project group2.2 Registration and methodology2.3 Guideline process2.3.1 Formulation of clinical questions2.3.2 Systematic literature review2.3.3 Consensus on ***3.1 General principles3.2 Drug delivery,reception and storage3.3 Dispensing of antineoplastics3.4 Administration and carrying of antineoplastics3.5 Prevention measures for blood,excreta(urine and feces),and vomitus of patients3.6 Medical waste *** *** The exposure of nurses,pharmacists,physicians,laboratory technicians,drug transportationstaff,,patients and caregivers in medical institutions to antineoplastics is a potential health ***,these antineoplastics are potential contaminants if disposed inappropriately to the environment,thus making it an issue of immense concern in medical safety.A drug is declared hazardous if it shows one or more of the following six impacts on humans or animals:carcinogenicity,teratogenicity or other developmental toxicity,reproductive toxicity,organ toxicity at low doses,and *** drugs also include new drugs possessing structural and toxicity profiles similar to the existing hazardous drugs(1).

关键词： drugs nurse doses