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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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PEG200增塑改性ACNs/MMT/PHBH纳米复合包装膜 被引量:2
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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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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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Ocular surface changes in moderate-to-severe acne vulgaris
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作者 Ci-Yi Pan Dong-Jie Sun +4 位作者 Han-Ling Li Li Ma Min Zhang Song-Yuan Tang Hui Zhang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第6期1049-1057,共9页
AIM:To investigate ocular surface disorders and tear function changes in patients with acne vulgaris and explore the potential relationship between acne vulgaris and dry eye.METHODS:This cross-sectional study included... AIM:To investigate ocular surface disorders and tear function changes in patients with acne vulgaris and explore the potential relationship between acne vulgaris and dry eye.METHODS:This cross-sectional study included right eyes of 53 patients with acne vulgaris and 54 healthy controls.The participants completed the Ocular Surface Disease Index(OSDI)questionnaire.The following ocular surface-related parameters were measured:tear meniscus height(TMH),noninvasive tear breakup time(NIBUT),Schirmer I test(SIT),lipid layer thickness(LLT)score of the tear film,meibum score,meibomian gland orifice obstruction score,the ratio of meibomian gland loss,conjunctival hyperemia score,and corneal fluorescein staining(CFS)score.RESULTS:The stability of the tear film decreased in acne vulgaris patients.In the acne group,the TMH and NIBUT were lower,whereas the OSDI,meibum score,meibomian gland orifice obstruction score,ratio of meibomian gland loss,and conjunctival hyperemia score were higher compared with controls(P<0.05).There were no significant differences in the CFS score,SIT,or LLT score between the groups(P>0.05).In two dry eye groups,the TMH,NIBUT,and LLT score were lower in the acne with dry eye(acne-DE)group,and the meibum score,meibomian gland orifice obstruction score,ratio of meibomian gland loss and conjunctival hyperemia score in the acne-DE group were higher(P<0.05).There were no significant differences between OSDI,SIT,and CFS score(P>0.05).CONCLUSION:Patients with moderate-to-severe acne vulgaris are more likely to experience dry eye than those without acne vulgaris.Reduced tear film stability and meibomian gland structure dysfunction are more pronounced in patients with moderate-to-severe acne and dry eye. 展开更多
关键词 acne vulgaris meibomian gland dysfunction dry eye tear film
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基于等效ACN - PCN的机场重载车辆通行性能分析
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作者 沃宇生 罗洲彬 廖蜀娇 《公路工程》 2024年第1期177-183,共7页
近年来,机场改扩建工程日益增多,且大多涉及不停航施工,即施工期间有大量诸如挖掘机、推土机、载重卡车等重型工程车辆在飞行区通行。施工期间,重型车辆在现有机场道面不同区域的通行对道面板带来新的荷载负担。因缺乏成熟的机场重型车... 近年来,机场改扩建工程日益增多,且大多涉及不停航施工,即施工期间有大量诸如挖掘机、推土机、载重卡车等重型工程车辆在飞行区通行。施工期间,重型车辆在现有机场道面不同区域的通行对道面板带来新的荷载负担。因缺乏成熟的机场重型车载道面评估计算方法,重型车辆轮载是否会造成现行道面结构承载性能下降已成为机场管理机构关注的重点问题。有鉴于此,基于民航现行飞机等级号ACN计算规则,以工程重载卡车为例,提出了基于ACN的概念式计算与ACN等效荷载精确计算两种评估重载车辆道面通行能力的评价方法;通过有限元仿真,基于道面板底最大弯拉应力小于容许应力的基本原则,对机场重载车辆通行道面板性能进行精确计算与分析,评估案例机场的重载车辆道面板性能。结果表明重载车辆的ACN概念式计算结果精度较低,与ACN等效荷载精确计算结果相差较大;经过有限元仿真精确计算后的案例机场等效ACN值小于机场通报的最小PCN值,表明该重载卡车满足通行条件;验证了ACN等效荷载道面性能评价方法的可靠性,为机场不停航施工运行安全及工程管理评估提供重要参考。 展开更多
关键词 等效ACN值 道面承载能力 机场重载车辆 最大弯拉应力 仿真建模分析
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A Study of the Treatment of Disfiguring Diseases in the “Qian Jin Fang”
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作者 Yuhan Li Yang Zhao 《Journal of Clinical and Nursing Research》 2024年第3期200-206,共7页
Traditional Chinese medicine(TCM)has been passed down for more than 2,000 years.TCM beauty products driven by the principles of identification and treatment with various dosage forms and exhibit mild and safe efficacy... Traditional Chinese medicine(TCM)has been passed down for more than 2,000 years.TCM beauty products driven by the principles of identification and treatment with various dosage forms and exhibit mild and safe efficacy are bound to become a main component of the beauty industry in the future.Xu once commented that“Qian Jin Fang”is different from the traditional prescription system,which emphasizes the use of medicines.In this paper,we mainly selected the prescriptions for the treatment of disfigurement diseases such as acne,scarring,black dryness,face hyperpigmentation,black mole,and rosacea from the article titled,“Upper Seven Orifices Disease-Facial Medicine IX”in the Bei Ji Qian Jin Yao Fang[1].By studying and analyzing the original composition of the formula,understanding the etiology and pathogenesis of the disease,and exploring the characteristics of the formula concerning the efficacy of TCM,their properties,flavors,and meridians,we summarized the characteristics of the Qian Jin Fang.It is based on the external treatment of disfigurement diseases,with a wide variety of drugs,flexibility,and accuracy.This method draws upon analogies while utilizing excipients and harmonizers to focus on the combined healing approach of treatment and nourishment. 展开更多
关键词 Qian jin fang External treatment Disfiguring diseases ACNE
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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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Serum level changes of inflammatory cytokines in patients with moderate to severe acne vulgaris treated with dual-wavelength laser 被引量:1
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作者 Yang Liu Qilin Sun +2 位作者 Hui Xu Gang Ma Pinru Wu 《Chinese Journal Of Plastic and Reconstructive Surgery》 2023年第2期47-52,共6页
Background:Acne vulgaris(AV)is a common inflammatory skin disease.Although various mechanisms have been indicated in the etiopathogenesis of AV,the exact pathophysiology remains unknown.Various lasers have been used t... Background:Acne vulgaris(AV)is a common inflammatory skin disease.Although various mechanisms have been indicated in the etiopathogenesis of AV,the exact pathophysiology remains unknown.Various lasers have been used to treat AV;however,the serum level changes of inflammatory cytokines after laser therapy have not been elucidated.We aimed to investigate the relationship between inflammatory changes and remission on the opposite side in patients with moderate to severe AV after treating half of the face with 595-and 1064-nm dualwavelength laser.Methods:In total,18 patients(9 male and 9 female)between 16 and 35 years of age with moderate to severe AV were evaluated in the study.Disease severity was classified according to the Pillsbury grading system of acne.Patients were randomized to receive a series of two treatment sessions at intervals of 2 weeks and followed up at 2 weeks after the final treatment.A 3 mL blood sample was drawn from every subject each time,and serum levels of inflammatory cytokines such as interleukin(IL)-6,IL-8,and IL-22 were determined using enzyme-linked immunosorbent assay at baseline and 2 weeks after each treatment.Improvement was determined by a blinded assessment of photographs taken before and after the final evaluation.Results:Inflammation was significantly reduced on both the treated and untreated sides,and symptoms of AV lesions were alleviated.All patients showed a significant increase in serum IL-22 levels after the first laser therapy,with no significant difference in serum IL-6 and IL-8 levels.After the second laser therapy,serum IL-6,IL-8,and IL-22 levels were significantly decreased.No significant side effects such as bruising,edema,hyperpigmentation,hypopigmentation,or scarring were reported.Conclusion:Half-face treatment with 595-and 1064-nm dual-wavelength laser for moderate and severe AV showed a significant effect of full-face remission,which was associated with a gradual decrease in IL-6,IL-8,and IL-22 levels after half-face topical treatment.This suggests that reducing inflammatory cytokine levels in the serum can relieve inflammation in non-therapeutic sites.This laser treatment is effective,economical,and painless. 展开更多
关键词 Acne vulgaris Dual-wavelength laser Inflammatory cytokines SERUM
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Optimal laboratory testing protocol for patients with acne taking oral isotretinoin
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作者 Yu Jeong Park Hui Young Shin +3 位作者 Woo Kyoung Choi Ai-Young Lee Seung Ho Lee Jong Soo Hong 《World Journal of Clinical Cases》 SCIE 2023年第11期2435-2442,共8页
BACKGROUND Isotretinoin is a widely prescribed drug for various dermatological conditions,especially acne.Blood tests are routinely performed to monitor its side effects.However,the optimal testing schedule remains co... BACKGROUND Isotretinoin is a widely prescribed drug for various dermatological conditions,especially acne.Blood tests are routinely performed to monitor its side effects.However,the optimal testing schedule remains controversial.AIM To evaluate the laboratory monitoring tests and schedules of patients with acne taking isotretinoin to determine the most efficient testing regimen.METHODS We retrospectively reviewed electronic medical records from the Dermatology Department of Dongguk University Ilsan Hospital from 2005 to 2020 for patients prescribed isotretinoin for acne who underwent monthly blood tests.RESULTS Aspartate aminotransferase(AST),alanine aminotransferase(ALT),and trigly-ceride(TG)levels significantly changed between 5 and 6 mo when the total prescription period and dose variables were considered altogether.The high-density lipoprotein level also significantly changed between 5 and 6 mo.However,low-density lipoprotein(LDL)and total cholesterol levels significantly changed between 1 and 2 mo.CONCLUSION We recommend testing AST,ALT,and TG levels once every 5 to 6 mo.We also suggest testing LDL and total cholesterol levels during the first and second months. 展开更多
关键词 Acne vulgaris ISOTRETINOIN Clinical laboratory techniques Vitamin A LIVER
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Influencing Factors and Solutions of Oily Sensitive Skin
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作者 Yang Suping Zhao Wenxuan 《China Detergent & Cosmetics》 CAS 2023年第4期37-43,共7页
The influence factors of oily sensitive skin were reviewed.Some solutions were proposed for the development of skin care formulations that aim at solving the oily sensitive skin problems more effectively,such as repai... The influence factors of oily sensitive skin were reviewed.Some solutions were proposed for the development of skin care formulations that aim at solving the oily sensitive skin problems more effectively,such as repairing the skin permeability barrier,controlling oil,inhibiting sebum oxidation,relieving keratinization abnormalities,regulating the skin microecology and alleviating skin inflammatory reactions.It was concluded that future research should focus on precise skin care by designing targeted product formulations according to the characteristics of oily sensitive skin. 展开更多
关键词 oily sensitive skin ACNE COSMETICS
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A study on the mechanism of acupuncture treatment of acne based on immune inflammation
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作者 Chu-Yi Zhang Rui Jin +1 位作者 Yi-Jun Feng Zhen Zhou 《TMR Non-Drug Therapy》 2023年第1期8-13,共6页
Acne is a chronic inflammatory skin disease involving hair follicle sebaceous glands,which is characterized by acne,papules,pustules,nodules,cysts and so on.The disorder of immune inflammation is the key link.A variet... Acne is a chronic inflammatory skin disease involving hair follicle sebaceous glands,which is characterized by acne,papules,pustules,nodules,cysts and so on.The disorder of immune inflammation is the key link.A variety of factors participate in the immune inflammatory response of acne and interact with each other,leading to the occurrence and development of acne inflammation.Acupuncture can regulate the immune and inflammatory response through many links and improve the skin lesions.This study explains potential mechanisms of acupuncture in the treatment of acne by regulating the body's immune inflammatory response,in order to provide new ideas. 展开更多
关键词 ACUPUNCTURE ACNE IMMUNITY inflammatory reaction MECHANISM
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Topical Application of Synbiotic Bacillus Preparations Positively Affects Skin (Micro) Biology
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作者 Ze’evi Ma’or Robin Temmerman Xinmin Zhang 《Journal of Cosmetics, Dermatological Sciences and Applications》 2023年第2期107-123,共17页
Alteration in skin microbiome profile is involved in many skin conditions, therefore, microbiome modulation is a reasonable target for skin health. Probiotic skincare was suggested, and leave-on synbiotic skincare pre... Alteration in skin microbiome profile is involved in many skin conditions, therefore, microbiome modulation is a reasonable target for skin health. Probiotic skincare was suggested, and leave-on synbiotic skincare preparation, blending bacillus spores, as probiotic active ingredient, and inulin sugar, as prebiotic booster, is evaluated, using microarray, 16S gene sequencing, and clinical skin analyses. Topical application of leave-on synbiotic skincare on skin model activates a profound effect on skin biology, expressed in the transcriptome level, with higher than 10% affected genes. The significance of the synbiotic preparation on skin biology was assured, indicating the involvement of major biological pathways. Blending probiotic with Polygonum aviculare plant extract, had triggered a distinct gene expression alteration, demonstrating the sensitivity of skin responses to different active substances. A synbiotic skincare application, had successfully introduced live and active Bacillus probiotics on human skin, detectable days after application was finalized. Following synbiotic application, the microbial content of several microorganisms, related to skin pathologies, was reduced, while the content of bacillus species, representing a healthier microbiome status, was increased, suggesting that frequent application may lead to overall healthier skin microbiome. Acne vulgaris involves unbalanced skin microbiome, with expansion of Cutibacterium acnes. The efficacy of a synbiotic skin cream was assessed to improve acne symptoms, including IGA dermatologist acne severity score, the number of counted acne lesions, measured skin oiliness and skin redness, visual appearance of skin-pores, skin smoothness and softness, and Acne Quality of Life Index. 展开更多
关键词 Probiotic Cosmetics Skin Transcriptome Bacillus Ferment Polygonum Extract Acne Vulgaris Prebiotic Synbiotic Skin Cream
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A Case Report of Concurrent Acne-Related Occurrence Complications: Telangiectasia, Post-Inflammatory Erythema, Post-Inflammatory Hyperpigmentation, and Atrophic and Hypertrophic Scars
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作者 Kanako Kita Ichiro Kurokawa 《Journal of Cosmetics, Dermatological Sciences and Applications》 2023年第2期85-90,共6页
Prior to his initial diagnosis, a 21-year-old male had been experiencing facial acne for two years and had been treated by a doctor in private practice. The patient visited our department because the clinical manifest... Prior to his initial diagnosis, a 21-year-old male had been experiencing facial acne for two years and had been treated by a doctor in private practice. The patient visited our department because the clinical manifestations of mandibular acne did not improve. At the time of initial examination, telangiectasia (TE), post-inflammatory erythema (PIE), post-inflammatory hyperpigmentation (PIH), atrophic scars (ASs), and a hypertrophic scar (HS) with induration were observed on the right neck. We diagnosed this as an acne vulgaris complication. HS lesions were topically treated by injecting triamcinolone acetonide, and the patient was prescribed 8.1 g/day of oral Saireito (Japanese herb). Adapalene benzoyl peroxide gel and topical tacrolimus hydrate ointment were used to treat PIE and TE. Both HSs and PIE improved;however, TE and AS did not improve. Currently, the patient is under observation. We consider this to be a very rare concurrent occurrence of diverse complications of acne vulgaris, and present the following case study. 展开更多
关键词 Acne Vulgaris Acne-Related Concurrent Occurrence Complications TELANGIECTASIA Atrophic Scar Hypertrophic Scar
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Effective Skin Care Guidance for Patients with Acne Vulgaris after Standard Treatment
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作者 Katsuko Kikuchi Yumi Murakami +5 位作者 Haruna Sato Ryoko Yamashita Yumiko Saya Ichiko Morino Rikako Uchino Hiroshi Matsunaka 《Journal of Cosmetics, Dermatological Sciences and Applications》 2023年第4期345-356,共12页
With the introduction of new drugs, the treatment of acne vulgaris has improved dramatically;however, there remains a considerable gap between treatment outcomes and patients’ treatment goals. This study aimed to det... With the introduction of new drugs, the treatment of acne vulgaris has improved dramatically;however, there remains a considerable gap between treatment outcomes and patients’ treatment goals. This study aimed to determine whether dermatologists’ guidance on appropriate skincare for skin symptoms such as post-inflammatory erythema and post-inflammatory hyperpigmentation (PIH), which are not covered by acne treatment, leads to an improvement in patients’ skin condition and patient satisfaction. Japanese women who had completed standard treatment for acne vulgaris and those with mild symptoms not requiring treatment were included in the study. The participants received instructions about skin care at the beginning of the study, which they continued to apply for 6 weeks. At the start and end of the study, participants were examined by a dermatologist;afterward, skin measurements, including skin color, skin surface lipid content, and image analysis by VISIA<sup>®</sup> Evolution, analysis of stratum corneum obtained from the skin surface, and Skindex-16 questionnaire for assessing quality of life (QOL), were performed. The following showed significant improvements: PIH score, number of inflammatory acne lesions, and number of non-inflammatory acne lesions observed via skin examination;skin surface lipid content and values of L* and a* obtained via instrumental measurement;n number of pore, texture, red spot, and pigmented spot obtained via by image analysis;and degree of multilayer exfoliation and interleukin-1α determined by analysis of epidermal stratum corneum. QOL measurement using Skindex-16 also improved significantly. Appropriate skin care guidance following standard acne vulgaris treatment is helpful in achieving patients’ treatment goals. . 展开更多
关键词 Acne Vulgaris Skin Care Post-Inflammatory Hyperpigmentation Post-Inflammatory Erythema Quality of Life
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Trillium拟加快Bio-ACNTM工艺商业化进程
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作者 《石油化工技术与经济》 2023年第1期30-30,共1页
近日,美国Trillium可再生化学品公司获得美国能源部(DOE)250万美元的资助,以加快公司Bio-ACNTM工艺商业化进程。公司计划2023年建设示范装置,2025年建设商业规模装置。
关键词 化学品公司 美国能源部 示范装置 商业化进程 TM 可再生 ACN
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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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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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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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