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PEG200增塑改性ACNs/MMT/PHBH纳米复合包装膜 被引量:4
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作者 李潇潇 徐晓晴 +2 位作者 闫昫 刘旭彤 马晓军 《包装工程》 CAS 北大核心 2021年第7期91-98,共8页
目的制备聚乙二醇(PEG200)-乙酰化纤维素纳米晶体/蒙脱土/聚3-羟基丁酸酯-co-3-羟基己酸酯(PHBH)纳米复合包装膜,探究PEG200对三元纳米复合材料(ACNs/MMT/PHBH)性能的影响,以获得柔韧性、分散性等性能优良的纳米复合包装膜,增加复合包... 目的制备聚乙二醇(PEG200)-乙酰化纤维素纳米晶体/蒙脱土/聚3-羟基丁酸酯-co-3-羟基己酸酯(PHBH)纳米复合包装膜,探究PEG200对三元纳米复合材料(ACNs/MMT/PHBH)性能的影响,以获得柔韧性、分散性等性能优良的纳米复合包装膜,增加复合包装膜在包装上的可应用性。方法通过溶液共混法制备不同比例的PEG200-ACNs/MMT/PHBH纳米复合包装膜,应用扫描电镜、傅里叶红外光谱、偏光显微镜、热重分析、差式扫描量热仪、拉伸测试仪和透氧透湿测试仪,对复合膜的断面形貌、热稳定性、晶体形貌、力学性能和阻隔性能进行分析表征。结果扫描电镜显示,加入适量的PEG200后,纳米颗粒上具有包覆作用,使得填料与PHBH基质间的相容性得到进一步改善。力学测试结果表明,PEG200的加入使复合包装膜的韧性有一定程度的提高,当PEG200的质量分数为6%时,与未添加PEG200的包装膜相比,其断裂伸长率增加了29.9%。阻隔性能测试结果显示,当PEG200的质量分数为4%时,复合膜的阻隔性能最佳,水蒸气透过率和氧气透过率分别为26.48 g/(m^(2)·d)和28.46 cm3/(m^(2)·d)。结论实验结果表明,加入少量的PEG200能够改善纳米粒子与PHBH之间的相容性,提高ACNs/MMT/PHBH纳米复合材料的韧性和阻氧阻湿性能。 展开更多
关键词 PEG200 PHBH acns 蒙脱土 纳米复合包装膜
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SPS烧结温度对ACNs/Ti复合材料组织结构与力学性能的影响
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作者 赵宁 王海丽 +1 位作者 张媚 孙国栋 《钛工业进展》 CAS 2024年第2期11-16,共6页
通过放电等离子烧结(SPS)制备ACNs(无定形碳纳米颗粒)/Ti复合材料,并采用扫描电子显微镜、X射线衍射仪、光学显微镜以及电子万能试验机对不同烧结温度下ACNs/Ti复合材料的显微组织、相组成及力学性能进行表征。结果表明,较低烧结温度(80... 通过放电等离子烧结(SPS)制备ACNs(无定形碳纳米颗粒)/Ti复合材料,并采用扫描电子显微镜、X射线衍射仪、光学显微镜以及电子万能试验机对不同烧结温度下ACNs/Ti复合材料的显微组织、相组成及力学性能进行表征。结果表明,较低烧结温度(800℃)下,未反应的ACNs虽然会对复合材料的强度有所贡献,但其与基体的界面结合较弱,会导致复合材料塑性严重下降。较高烧结温度(1000℃)下,与基体充分反应的TiC颗粒过度生长后尺寸较大,这一现象会造成材料强度下降。当烧结温度为900℃时,ACNs与Ti基体完全反应生成TiC颗粒,这种细小弥散的TiC沿着基体颗粒周围分布形成了准连续网状结构,此时ACNs/Ti复合材料具有最佳的强塑性匹配,其抗拉强度、屈服强度、延伸率分别为648.19 MPa、551.02 MPa、36.19%。 展开更多
关键词 acns/Ti复合材料 放电等离子烧结 显微组织 力学性能
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国际ACNS会议,再次登陆中国
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作者 向永杨 《信息安全与通信保密》 2004年第3期78-78,共1页
在信息网络高速发展的今天,网络安全无疑成为信息化的热点。然而,在构建信息网络安全堡垒的众多产品、方案背后,是更多的高校、科研机构和企业实验室的基础研究工作。因而,信息安全领域理论层面的国际化交流随之变得越发重要。由国... 在信息网络高速发展的今天,网络安全无疑成为信息化的热点。然而,在构建信息网络安全堡垒的众多产品、方案背后,是更多的高校、科研机构和企业实验室的基础研究工作。因而,信息安全领域理论层面的国际化交流随之变得越发重要。由国际密码和信息安全协会(International Cryptograph and Information 展开更多
关键词 网络安全 acns会议 中国 信息安全
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Bacteriostatic Effect of Self-designed Chinese Herbal Formula and Its Application in Preparing Traditional Chinese Medicine Acne-removing Soap
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作者 Caien CAI Yingxi QIN +2 位作者 Tingli SU Hailin LU Bin LI 《Agricultural Biotechnology》 2025年第3期71-74,83,共5页
[Objectives]This study was conducted to investigate the antibacterial effect of a self-designed acne-relieving Chinese herbal formula and prepare a kind of acne-removing soap according to the antibacterial effect.[Met... [Objectives]This study was conducted to investigate the antibacterial effect of a self-designed acne-relieving Chinese herbal formula and prepare a kind of acne-removing soap according to the antibacterial effect.[Methods]Chinese herbs Lonicera japonica,Taraxacum mongolicum,Scutellaria baicalensis,Angelica dahurica,Centella asiatica and Aloe vera,were decocted with water,and the antibacterial effects on Staphylococcus aureus,Staphylococcus albus,Candida albicans and Propionibacterium acnei were tested by inhibition zone experiments.The soap base was prepared by saponification of coconut oil,palm oil,hazelnut oil and sodium hydroxide,and then the herbal liquid was added into the soap.[Results]The liquid had bacteriostatic effect on S.aureus,S.albus and P.acnes,but no inhibitory effect on C.albicans.The best bacteriostatic effect on S.aureus and S.albus was achieved at 330 mg/ml,and the best bacteriostatic effect on P.acnes was at 160 mg/ml.[Conclusions]The Chinese herbal formula has antibacterial effect.The handmade soap made from the Chinese herbal formula has the characteristics of smooth surface,moderate hardness,fine texture,rich foam and fresh smell. 展开更多
关键词 Chinese medicine formula ACNE Antibacterial effect Staphylococcus aureus Staphylococcus albus Propionibacterium acnes
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Microneedle for acne treatment:Recent advances in materials and technologies
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作者 Han Zheng Pengxian Wang +6 位作者 Nian Liu Miao Han Tianpeng Xu Shuai Zhao Yuhe Yang Xin Zhao Peng Li 《Journal of Materials Science & Technology》 2025年第30期289-303,共15页
Acne vulgaris is one of the most common skin disorders affecting millions of patients worldwide,its long-lasting inflammation greatly reduces life quality and causes negative psychosocial impacts.Conventional treatmen... Acne vulgaris is one of the most common skin disorders affecting millions of patients worldwide,its long-lasting inflammation greatly reduces life quality and causes negative psychosocial impacts.Conventional treatments often along with side effects and issues of patient compliance,and ineffective in treating severe conditions.In recent years,microneedle(MN)has emerged as a versatile therapeutic technology,owing to its minimally invasive,effective,and reduced side effects.However,there are few review articles that systematically summarize the progress of microneedles for the treatment of acne.Here conclude the material,function,and application of microneedle technology in the treatment of acne,with a particular focus on two types of anti-acne microneedle:drug-loaded microneedle(DMN)and radio-frequency microneedle(RMN).DMN facilitates targeted drug delivery to the skin's deeper layers,while RMN utilizes radio-frequency currents to stimulate collagen regeneration,thus addressing acne scarring.Additionally,future directions for advanced acne-treating microneedle technology are envisioned,such as diversified drug loading,multi-functionality,production process optimization,and personalized treatment.These different directions are expected to further enhance the safety,efficacy,and patient satisfaction of microneedle acne treatments. 展开更多
关键词 MICRONEEDLE ACNE ANTIBACTERIAL BIOMATERIALS Degradable material
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A Group of Compositions for Ameliorating Acne Problems and Validation of Their Efficacy
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作者 Wang Jiajun Chen Dongzhi +1 位作者 Xu Yongyu Ma Jieting 《China Detergent & Cosmetics》 2025年第1期64-72,共9页
To verify the inhibitory ability of the combination on the biofilm production of Propionibacterium acnes and its ameliorative effect on facial acne problems.The ability of the combination to inhibit the biofilm format... To verify the inhibitory ability of the combination on the biofilm production of Propionibacterium acnes and its ameliorative effect on facial acne problems.The ability of the combination to inhibit the biofilm formation of Propionibacterium acnes was verified by suspension quantification and crystal violet staining,and then 60 effective volunteers were selected for the efficacy measurement of topical acne elimination combinations+bases for 4 consecutive weeks,which were measured by a professional instrument,and the volunteers’facial acne lesion areas and acne lesion colours were evaluated respectively.In vitro tests verified that the combination can inhibit the formation of P.acnes biofilm and will not completely kill P.acnes and will not disrupt the micro-ecological balance of the skin;3%and 5%acne combinations can reduce the biofilm of P.acnes by 61.3%and 61.6%respectively;after 4 weeks of continuous use,the area of acne lesions of the samples with 5%acne combinations decreased by 54.61%and the colour of acne lesions decreased by 54.61%compared with the area of acne lesions before the use of the combination.54.61%,acne lesion colour a^(*)decreased by 13.74%,and the subjects’self-assessment of the mildness and non-irritation of the samples in the test group had a 100%agreement rate.The acne combination can improve acne problems by inhibiting the biofilm formation of Propionibacterium acnes,and has a mild and effective acne elimination effect. 展开更多
关键词 BIOFILM propionibacterium acnes anti-acne efficacy test
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Truncal acne:Bridging research gaps and enhancing clinical understanding
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作者 Benyue Li Xueli Jia +2 位作者 Jie Yang Hong Meng Fengwei Qi 《Journal of Dermatologic Science and Cosmetic Technology》 2025年第2期47-53,共7页
Background:Acne affects individuals across all ages and ethnic groups.Truncal acne has received limited attention,and its mechanisms and characteristics remain poorly understood.Objective:This article aims to provide ... Background:Acne affects individuals across all ages and ethnic groups.Truncal acne has received limited attention,and its mechanisms and characteristics remain poorly understood.Objective:This article aims to provide a comprehensive analysis of truncal acne,identifying its characteristics and exploring assessment methods and management of truncal acne.Methods:The study examines the causes and contributing factors of truncal acne by analyzing the skin characteristics and acne phenotypes of the trunk area.It also evaluates the existing methods for assessing the severity of truncal acne.Results:Trunk sebum secretion and pH levels are lower than those of the face,while the degree of microbial imbalance is greater.Variability in androgen levels and gender differences also influence truncal acne.Additionally,contact with certain materials exacerbates acne outbreaks on the trunk.The study highlights the advantages,disadvantages,mechanisms of action,and specific targets of each product.Conclusion:This paper provides insights for future research and practical approaches to truncal acne management,assisting in selecting effective products for managing truncal acne. 展开更多
关键词 Epidemiological data MALASSEZIA Salicylic acid Sebum secretion Truncal acne
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Effects of Chamomilla Recutita Extract on Soothing Adult Acne Sequelae
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作者 Xu Qingyang Jiang Yueming Lu Wenjia 《China Detergent & Cosmetics》 2025年第1期27-34,共8页
Cutibacterium acnes were used to induce lipase production,and to establish ex-vivo skin model of inflammatory response and post-inflammatory hyperpigmentation,in purpose of exploring the mechanism of chamomilla recuti... Cutibacterium acnes were used to induce lipase production,and to establish ex-vivo skin model of inflammatory response and post-inflammatory hyperpigmentation,in purpose of exploring the mechanism of chamomilla recutita extract.Clinical study was designed to investigate the effects of chamomilla recutita extract on Chinese volunteers with sequelae of adult acne,by evaluating the severity of acne,post-acne erythema and pigmentation,skin basic physiological conditions.The results showed that chamomilla recutita extract inhibited lipase activity,cellular inflammatory response,and melanin production.In the clinical study,the acnes were relieved 173%,with a 78%lower post-acne erythema index and 202%less hyperpigmentation as compared to placebo,after applying samples containing 1%chamomilla recutita extract for 28 days.Meanwhile,chamomilla recutita extract showed instant oil control effect.The extract significantly reduced sebum secretion by 293%,increased skin moisture content by 102%,and strengthened the skin barrier by 193%after 28 days application,which provided favorable skin physiological basis for the prevention and improvement of acne vulgaris and sequelae. 展开更多
关键词 chamomilla recutita extract acne marks post-inflammatory erythema post-inflammatory hyperpigmentation
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Menstrual cycle phases and acne flares:A retrospective analysis in Indian women
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作者 Annie Jain Kirit Chawda +5 位作者 Nusayha Sokeechand Pranav Nair Rima Rakshit Hemali Pandya Aisha Rehman Muzzammil Hosenally 《Journal of Dermatologic Science and Cosmetic Technology》 2025年第3期60-65,共6页
Background:Acne vulgaris is a common skin disorder that impacts quality of life.Both acne and menstrual symptoms share a hormonal pathogenesis,often linked to hormonal imbalances in women.This suggests a relationship ... Background:Acne vulgaris is a common skin disorder that impacts quality of life.Both acne and menstrual symptoms share a hormonal pathogenesis,often linked to hormonal imbalances in women.This suggests a relationship between acne counts and the various phases of the menstrual cycle.Objective:In this study,we aimed to assess the relationship between acne counts and the menstrual cycle in healthy young Indian women suffering from mild to moderate acne.The objective was to further understand the role of the various phases of the menstrual cycle in acne flares.Methods:This study explores the data from two(2)previously conducted clinical trials.The studies originally aimed to evaluate the efficacy of topical creams in the reduction of acne lesion count on the face.The data from these studies were retrieved and compiled.The number of days between the last menstrual period(LMP)and the actual day of the visit was calculated and regrouped as follows:1–7 days(early to mid-follicular phase),8–15 days(mid-to late follicular phase),16–24 days(post-ovulation to early luteal phase)and>24 days(mid-to late luteal phase).Subsequently,the global acne count—recorded by the dermatologist as part of the study procedures—was cross-tabulated with these menstrual phases using measures of central tendency and dispersion,followed by inferential analyses to evaluate differences between groups.Results:On average,the female subjects visiting the centre during the end of their luteal phase or bleeding days had higher acne counts(p=0.032).This effect was statistically significant only at the baseline visit,which followed a 14-day washout period involving the use of a neutral cleanser and adoption of a general skincare routine.During the product use phase,the effect of the menstrual cycle diminished.Conclusion:The study demonstrates an association between acne flares and the menstrual cycle:acne counts are likely to be higher by an average of 5–6 units during the late luteal and early follicular phases.Such differences may impact the outcome of clinical trials if not carefully monitored and accounted for in study designs and data analysis. 展开更多
关键词 Menstrual cycle ACNE Hormonal imbalance
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Synovitis, acne, pustulosis, hyperostosis, and osteitis syndrome as a cause of pneumothorax: A case report
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作者 Zi-Xiang Zheng Meng-Jiao Gu +4 位作者 Tian-Lun Kang Yu-Ru Zhang Yu-Nuo Wang Chen Li Yuan-Hao Wu 《World Journal of Rheumatology》 2025年第1期1-5,共5页
BACKGROUND Synovitis,acne,pustulosis,hyperostosis,and osteitis(SAPHO)syndrome,a rare inflammatory disease,was described in 1987 by Chamot et al,who identified its common characteristics and transitional forms through ... BACKGROUND Synovitis,acne,pustulosis,hyperostosis,and osteitis(SAPHO)syndrome,a rare inflammatory disease,was described in 1987 by Chamot et al,who identified its common characteristics and transitional forms through case reports.The inci-dence rate is now 1 in 10000 among Caucasians and 0.00144 in 10000 among Japanese.Pneumothorax occurs when gas enters the pleural cavity,typically due to lung disease or chest trauma,and is characterized as either spontaneous or traumatic.Spontaneous pneumothorax is commonly linked to congenital lung tissue abnormalities or lung conditions,such as ruptured pulmonary bullae,emphysema,and bronchial asthma.Respiratory involvement in SAPHO syn-drome has historically been noted.CASE SUMMARY We present the case of a 44-year-old male patient who had previously been diagnosed with SAPHO syndrome.Following a two-year cessation of methotrexate therapy,he experienced recurrent anterior chest wall and joint pain accompanied by dyspnea.We conducted a comprehensive examination for the patient,which included physical examination,laboratory tests,and imaging studies.The clinical presentation and treatment outcomes suggest that his pneumothorax was related to an episode of SAPHO syndrome.We performed closed thoracic drainage surgery for the patient and treated his symptoms with etoricoxib(60 mg daily).Upon discharge,methotrexate was prescribed again.In subsequent follow-ups,there was no recurrence of joint and respiratory symptoms observed in the patient.CONCLUSION SAPHO syndrome has been proposed as a transitional stage between ankylosing spondylitis and psoriatic arthritis.One study reported a 0.29%incidence of spontaneous pneumothorax in patients with ankylosing spondylitis,higher than in the general population.Additionally,30%of patients with SAPHO syndrome test positive for HLA-B27,an antigen linked to ankylosing spondylitis.Symptomatically,some patients with SAPHO syndrome meet diagnostic criteria for ankylosing spondylitis,with sternoclavicular joint involvement and paravertebral ossific-ations resembling syndesmophytes in ankylosing spondylitis.These features suggest a possible linked between SAPHO syndrome and ankylosing spondylitis. 展开更多
关键词 Synovitis acne pustulosis hyperostosis and osteitis syndrome PNEUMOTHORAX Methotrexate Closed thoracic drainage Case report
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负载花色苷的抗酸性羧甲基壳聚糖凝胶微球的缓释研究
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作者 李煦 储若晴 +3 位作者 刘欣茹 刘长霞 叶霞 范小振 《食品工业科技》 CAS 北大核心 2024年第15期152-160,共9页
为拓宽壳聚糖基水凝胶的应用范围,构筑可食用的花色苷(ACNs)递送体系,采用反相乳液法,以玉米油为连续相,水杨醛(SA)为交联剂,制备了具有抗酸性能的载ACNs羧甲基壳聚糖(CMCS)凝胶微球(ACNs/CMCS-SA),表征了其结构和形貌,研究了其稳定性... 为拓宽壳聚糖基水凝胶的应用范围,构筑可食用的花色苷(ACNs)递送体系,采用反相乳液法,以玉米油为连续相,水杨醛(SA)为交联剂,制备了具有抗酸性能的载ACNs羧甲基壳聚糖(CMCS)凝胶微球(ACNs/CMCS-SA),表征了其结构和形貌,研究了其稳定性、溶胀性能和缓释性能。结果表明,ACNs/CMCSSA具有微米级粒径,表面光滑呈圆形;ACNs/CMCS-SA在酸性条件下稳定性良好,溶胀和缓释过程展现pH响应性;ACNs的释放行为符合Weibull模型,pH7和9时为扩散和骨架溶蚀复合释放机制控制,pH3和5时为菲克扩散和Case Ⅱ transport(0级-溶胀依赖性释放)联合释放机制控制。ACNs/CMCS-SA制备方法简单,过程绿色;对ACNs展现良好的胃酸保护和肠道释放性能,为环境友好型药物包封材料的开发和ACNs的应用提供了理论和实践参考。 展开更多
关键词 花色苷(acns) 释放性能 动力学 PH 响应 反相乳液法 凝胶微球
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萃取精馏分离丁烷/丁烯 被引量:8
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作者 雷志刚 许峥 +2 位作者 周晓颖 廖波 易波 《现代化工》 EI CAS CSCD 2000年第9期32-34,39,共4页
介绍了两种分离丁烷 /丁烯的方法 ,即乙腈 (ACN)法和二甲基甲酰胺 (DMF)法。对两种工艺流程进行了计算对比 ,DMF法工艺流程比ACN法简单 ,只需 3个塔。计算结果表明 ,DMF法再沸器和冷凝器能耗分别比ACN法降低 33.7%和 2 2 .7% ,选择DMF... 介绍了两种分离丁烷 /丁烯的方法 ,即乙腈 (ACN)法和二甲基甲酰胺 (DMF)法。对两种工艺流程进行了计算对比 ,DMF法工艺流程比ACN法简单 ,只需 3个塔。计算结果表明 ,DMF法再沸器和冷凝器能耗分别比ACN法降低 33.7%和 2 2 .7% ,选择DMF法萃取精馏分离丁烷 /丁烯效果较好。 展开更多
关键词 萃取 精馏 丁烷 丁烯 溶剂 分离方法 ACN DMF法
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非水反相微乳的加溶与电导性质研究 被引量:10
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作者 张丽 张冬柏 +2 位作者 马季铭 程虎民 齐利民 《物理化学学报》 SCIE CAS CSCD 北大核心 2003年第2期120-124,共5页
研究了若干非水极性溶剂(甲酰胺、二甲基亚砜和乙腈)及其与水的混合物/AOT/正庚烷反相微乳体系的加溶性质及其电导行为.结果表明,在AOT反相微乳中,非水极性溶剂的最大加溶量均远小于水的加溶量.其最大加溶量顺序为二甲基亚砜<甲酰胺&... 研究了若干非水极性溶剂(甲酰胺、二甲基亚砜和乙腈)及其与水的混合物/AOT/正庚烷反相微乳体系的加溶性质及其电导行为.结果表明,在AOT反相微乳中,非水极性溶剂的最大加溶量均远小于水的加溶量.其最大加溶量顺序为二甲基亚砜<甲酰胺<乙腈<水.甲酰胺和乙腈与水的加溶相互抵制,而水在一定范围内可促进二甲基亚砜的加溶.非水反相微乳的电导率随加溶量的变化规律与含水反相微乳体系类同,但到达电导率极大值和出现渗滤时的加溶量明显比含水反相微乳体系的要小. 展开更多
关键词 非水反相微乳 二甲基亚砜 DMSO 甲酰胺 FA 乙腈 ACN 加溶量 电导率
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萃取精馏分离C_4的流程优化 被引量:7
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作者 雷志刚 周荣琪 段占庭 《高校化学工程学报》 EI CAS CSCD 北大核心 2000年第6期541-547,共7页
分别建立了ACN法和DMF法分离C4的Wilson活度系数模型,并运用计算机模拟软件对萃取精馏分离C4的流程进行优化。ACN法流程优化的原则是在原流程改动少的前提下,调节萃取精馏塔内液相负荷;DMF法流程优化的原则是改进塔板结构,减少丁二... 分别建立了ACN法和DMF法分离C4的Wilson活度系数模型,并运用计算机模拟软件对萃取精馏分离C4的流程进行优化。ACN法流程优化的原则是在原流程改动少的前提下,调节萃取精馏塔内液相负荷;DMF法流程优化的原则是改进塔板结构,减少丁二烯的相变次数。 展开更多
关键词 萃取精馏 流程优化 ACN法 DMF法 丁二烯 分离
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痤疮丙酸杆菌系统发育型及其在痤疮发病中作用研究进展 被引量:4
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作者 李东影 孙娅楠 +4 位作者 杨伟峰 崔开宇 贺改英 马淑骅 王毅 《临床皮肤科杂志》 CAS CSCD 北大核心 2022年第12期757-761,共5页
痤疮丙酸杆菌(C.acnes)为痤疮最重要致病菌,近年来随着对痤疮与C.acnes之间的研究深入,发现痤疮的发生与C.acnes的系统发育型密切相关。该文从C.acnes系统发育型不同分型与痤疮关系,C.acnes分型与其分泌的蛋白和胞外酶、Christie-Atkins... 痤疮丙酸杆菌(C.acnes)为痤疮最重要致病菌,近年来随着对痤疮与C.acnes之间的研究深入,发现痤疮的发生与C.acnes的系统发育型密切相关。该文从C.acnes系统发育型不同分型与痤疮关系,C.acnes分型与其分泌的蛋白和胞外酶、Christie-Atkins-Munch-Petersen(CAMP)因子、卟啉及生物被膜等致病因素关系,以及促进炎症等方面进行总结归纳,更深刻和系统性地了解C.acnes,进一步了解C.acnes在痤疮发生发展中的重要作用,为有针对性地治疗痤疮,及相关药品及化妆品的开发提供更好的研究思路。 展开更多
关键词 痤疮 Cutibacterium acnes 系统发育型 致病因素 毒力因子
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车辆事故自动呼救系统车载终端设计 被引量:4
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作者 李仲兴 王静 +2 位作者 陈望 肖文 陆颖 《中国安全科学学报》 CAS CSCD 北大核心 2015年第6期74-80,共7页
为弥补传统车辆事故自动呼救(ACN)系统车载终端无可视化界面、提供信息不足等缺点,设计出一种新型ACN系统车载终端。详细阐述车载终端的功能需求和总体设计,以及事故检测模块和呼救信息发送模块的模块初始化及工作流程;事故检测模块的... 为弥补传统车辆事故自动呼救(ACN)系统车载终端无可视化界面、提供信息不足等缺点,设计出一种新型ACN系统车载终端。详细阐述车载终端的功能需求和总体设计,以及事故检测模块和呼救信息发送模块的模块初始化及工作流程;事故检测模块的功能包括加速度信号和图像信号的采集与存储,呼救信息发送模块可提取地理信息并显示和发送呼救信息。台车碰撞模拟试验的结果表明,车载终端能够准确采集包含更多预测成员伤害程度的有效信息和车内图像,计算碰撞速度变化量、最大碰撞加速度,发送呼救信息,且可视化界面工作正常。 展开更多
关键词 事故自动呼救(ACN)系统 车载终端 图像采集 可视化界面 台车试验
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Efficacy of fire-needle for acne:a systematic review and meta-analysis of randomized controlled trials 被引量:3
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作者 罗晓舟 李克嵩 +1 位作者 唐纯志 张宾 《World Journal of Acupuncture-Moxibustion》 CSCD 2017年第2期77-84,共8页
Objective To evaluate the efficacy of fire-needle therapy for acne to provide an objective basis for clinical decisions.Method Pub Med,Chinese Biomedical Medicine disc(CBM),Chinese National knowledge infrastructure... Objective To evaluate the efficacy of fire-needle therapy for acne to provide an objective basis for clinical decisions.Method Pub Med,Chinese Biomedical Medicine disc(CBM),Chinese National knowledge infrastructure(CNKI),and Wanfang database were searched to include eligible randomized controlled trails.Bias risk was assessed and data were extracted.Meta-analysis was performed and as was subgroup analysis.Results Thirty-three RCTs involving 3362 patients were included.Most of them had a high risk or unclear risk of bias regarding allocation concealment,incomplete outcome data and selective reporting.Compared with control groups,meta-analysis revealed that fireneedle therapy had an overall higher total effectiveness rate(RR=1.19,95% CI:1.16–1.22,P0.000 01).Subgroup analysis showed fire-needle therapy was associated with an increased total effective rate(RR=1.20,95%CI:1.14–1.28,P0.000 01),when compared against drug therapy.Fire-Needle therapy was associated with an increased total effective rate(RR=1.18,95%CI:1.12–1.24,P0.000 01),when fire-needle plus other TCM therapy was compared against other therapy.fire-needle therapy was associated with an increased total effective rate(RR=1.18,95%CI:1.13–1.24,P0.000 01),when fire-needle plus Chinese herb therapy was compared against Chinese herb therapy alone.fireneedle therapy was associated with an increased total effective rate(RR=1.28,95%CI:1.18–1.39,P0.000 01),when compared fire-needle plus Western drug therapy against western drug therapy alone.Adverse events were not reported in most articles.Conclusion Our study showed that fire-needle appears to be an effective therapy for treating acne,but the evidence is currently insufficient due to the poor quality of the studies.The safety of fire-needle therapy is also uncertain due to the small sample size and the lack of reporting in included articles.Larger sample,higher quality studies are needed. 展开更多
关键词 fire-needle ACNE systematic reviews META-ANALYSIS
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谈“ACN”和“Artnet”网络协议标准 被引量:14
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作者 陈国义 胡清亮 +1 位作者 梁国芹 廖伟民 《照明工程学报》 2003年第4期11-16,22,共7页
本文着重描述ACN协议与Artnet协议之间的不同特点与应用情况 ;ACN是指在提供下一代灯光控制网络数据传输的先进控制网络标准。ACN要去完成包括DMX协议的更多工作。ACN将统一灯光控制网络 ,允许单一网络传输很多不同种类的调光及其它相... 本文着重描述ACN协议与Artnet协议之间的不同特点与应用情况 ;ACN是指在提供下一代灯光控制网络数据传输的先进控制网络标准。ACN要去完成包括DMX协议的更多工作。ACN将统一灯光控制网络 ,允许单一网络传输很多不同种类的调光及其它相关数据 ,并且可以连接来自不同厂家的调光设备。Art Net是一个 10BaseTTCP IP协议的以太网协议。其目的是用标准网络技术允许远程传输大量的DMX5 12数据。 展开更多
关键词 计算机网络 ACN协议 Artnet协议 网络协议标准 TCP/IP协议
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丙烯腈诱发活性氧生成对大鼠精子质量及超微结构的影响 被引量:2
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作者 党瑜慧 李芝兰 +4 位作者 潘丽 李伟 罗波艳 樊俏荣 魏倩 《毒理学杂志》 CSCD 北大核心 2017年第4期258-262,共5页
目的探讨丙烯腈(ACN)诱导氧化应激对大鼠附睾精子质量与鞭毛超微结构的影响。方法 40只雄性SPF级健康SD大鼠按体重随机分为4组,染毒组以12.5、25和50 mg/kg ACN灌胃,对照组给予等体积玉米油。1次/d,6 d/周,连续13周。测精子活性氧(react... 目的探讨丙烯腈(ACN)诱导氧化应激对大鼠附睾精子质量与鞭毛超微结构的影响。方法 40只雄性SPF级健康SD大鼠按体重随机分为4组,染毒组以12.5、25和50 mg/kg ACN灌胃,对照组给予等体积玉米油。1次/d,6 d/周,连续13周。测精子活性氧(reactive oxygen species,ROS)、丙二醛(methane dicarboxylic aldehyde,MDA)、超氧化物歧化酶(superoxide dismutase,SOD)、精子线粒体膜电位(mitochondrial membrane potential,MMP)和精子质量(0.86%生理盐水中游离精子),电子显微镜下观察精子鞭毛超微结构。结果 50 mg/kg组精子MMP较其他组均降低(P<0.05)。50 mg/kg组精子ROS含量较其他组升高(P<0.05)。染毒组SOD活力较对照组降低(P<0.05)。精子鞭毛超微结构显示,25和50 mg/kg ACN组精子鞭毛外部致密纤维和线粒体结构有损伤。精子密度50 mg/kg组为(3.52±0.46)×10~6/ml,较对照组、12.5和25 mg/kg组[分别为(5.71±0.66)×10~6/ml、(4.95±1.33)×106/ml和(5.99±0.78)×106/ml]均降低(P<0.05);25和50 mg/kg组精子活率分别为(62.18±3.4)%和(66.25±7.23)%,较对照组(83.22±13.86)%降低(P<0.05)。d级精子率50 mg/kg组为(40.76±1.47)%,25 mg/kg组为(37.77±3.41)%,与对照组(27.77±4.85)%和12.5 mg/kg组(31.77±4.85)%比较均升高(P<0.05)。精子平均路径速度对照组高于各ACN组,差异有统计学意义(P<0.05)。直线速度50 mg/kg组较对照组降低(P<0.05)。精子ROS含量与精子MMP呈负相关(r=-0.643,P=0.024),与SOD活力呈负相关(r=-0.713,P=0.009),与精子活力呈负相关(r=-0.629,P=0.028);与精子平均路径速度呈负相关(r=-0.839,P=0.001);与d级精子率呈正相关(r=0.699,P=0.011)。结论 ACN可致附睾内精子ROS含量增高,精子鞭毛内线粒体和外部致密纤维超微结构改变,而使精子活动能力和运动速度降低。 展开更多
关键词 丙烯腈(ACN) 大鼠 ROS 精子质量 鞭毛超微结构
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灯光控制系统泛播技术应用研究 被引量:2
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作者 蒋伟 任慧 +3 位作者 白石磊 唐玉刚 蒋玉暕 孙芳 《广播与电视技术》 北大核心 2007年第12期76-79,共4页
本文首先对灯光控制系统发展趋势进行展望,其次对目前灯光控制系统数据传输策略的优缺点进行剖析,进而分析了泛播技术应用在灯光系统中的优势和劣势,最后得出结论:联合使用广播、单播、组播以及泛播来传输数据,能有效解决灯光控制系统... 本文首先对灯光控制系统发展趋势进行展望,其次对目前灯光控制系统数据传输策略的优缺点进行剖析,进而分析了泛播技术应用在灯光系统中的优势和劣势,最后得出结论:联合使用广播、单播、组播以及泛播来传输数据,能有效解决灯光控制系统带宽利用率低和数据传输可靠性差等问题。分析结果表明,将泛播技术引入网络灯光控制系统,能够提高数据传输的可靠性,同时也实现了网络带宽的有效利用,有着广阔的前景。 展开更多
关键词 泛播 组播 单播 网络灯光 DMX512 Art-Net ACN
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