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珠光白漆颜色开发调试过程探析

现代涂料与涂装 2024年第7期27卷 46-48+63页

作者：曾志辉刘韶华柳州五菱新能源汽车有限公司

详细阐述了珠光白颜色的开发、调试过程，通过工艺参数的设定，解决了膜厚不均、外观和色差等常见问题。

关键词：珠光白调试经验

等离子体处理制备柔性低损耗ABS/Ag太赫兹空芯波导及其传输可靠性研究

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红外与毫米波学报 2024年第4期43卷 533-540页

作者：刘晟沈圆杰侯广宁查志鹏朱怡臻余烁颖张擎天赵强刘少华敬承斌褚君浩华东师范大学物理与电子科学学院纳光电集成与先进装备教育部工程研究中心上海200241

等离子体处理ABS管提升了ABS/Ag镀层太赫兹空芯波导的性能。胶带法测试结果表明,等离子体处理后,银镀层的附着力由5级提升至2级。等离子体处理后的ABS管内表面银层的均匀性和致密度更高,高质量的银层有利于降低波导的损耗。未经等离子... 详细信息

等离子体处理ABS管提升了ABS/Ag镀层太赫兹空芯波导的性能。胶带法测试结果表明,等离子体处理后,银镀层的附着力由5级提升至2级。等离子体处理后的ABS管内表面银层的均匀性和致密度更高,高质量的银层有利于降低波导的损耗。未经等离子体处理的4.2 mm内径的ABS/Ag镀层空芯波导在0.3 THz和0.1 THz时的直线损耗分别为0.72 dB/m和1.47 dB/m,等离子体处理后其损耗分别降至0.70 dB/m和1.44 dB/m,且波导能够在冷热环境中稳定传输太赫兹波。等离子体处理后的样品在超过200小时的湿热老化和16次的高低温循环老化试验后直线损耗升高小于0.1 dB/m,而未经等离子体处理的样品的损耗升高大于1 dB/m。研究结果表明,等离子体处理后的ABS/Ag镀层太赫兹空芯波导损耗更低、传输可靠性更高、耐老化性更好,可用于构建下一代通信、传感及太赫兹成像系统等。

关键词：太赫兹传输太赫兹波导空芯波导等离子体处理

Protection of carbon monoxide intraperitoneal administration from rat intestine injury induced by lipopolysaccharide

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Chinese Medical Journal 2010年第8期123卷 1039-1046页

作者： liu shao-hua MA Ke XU Bing XU Xin-rong Intensive Care Unit First Affiliated Hospital of Nanjing Medicial University Nanjing Jiangsu 210029 China Department of Emergency Huashan Hospital Affiliated Fudan University Shanghai 200040 China Department of Emergency Sixth Hospital Affiliated Shanghai Jiao Tong University Shanghai 200233 China

Background Treatment with inhaled carbon monoxide （CO） has been shown to ameliorate intestinal injury in experimental animals induced by lipopolysaccharide （LPS） or ischemia-reperfusion. We hypothesized that CO intraperitoneal administration （i.p.） might provide similar protection to inhaled gas. This study aimed to investigate the effects of continuous 2 L/min of 250 ppm CO i.p. on rat intestine injury induced by LPS and to try to develop a more practical means of delivering the gas. Methods A total of 72 male Sprague-Dawley rats were randomly assigned to 4 groups： control group, CO i.p. group, LPS group and LPS＋CO i.p. group. One hour after intravenously received 5 mg/kg LPS, the rats in LPS group and LPS＋CO i.p. group were exposed to room air and 2 L/min of 250 ppm CO i.p., respectively, and the rats of control group and CO i.p. group intravenously received an equal volume of 0.9% NaCI and 1 hour later, were exposed to room air and 2 L/min of 250 ppm CO i.p., respectively. One, 3 and 6 hour of each group after treated with room air or CO i.p., the animals （n=-6 for each time point） were sacrificed and intestinal tissues were collected for determinating the levels of platelet activator factor （PAF） and intercellular adhesion molecule-1 （ICAM-1） with enzyme-lined immunosorbent assays. The maleic dialdehyde （MDA） content and the myeloperoxidase （MPO） activity were determined with a chemical method. The phosphorylated p38 mitogen activated protein kinase （MAPK） expression was assayed with Western blotting and the cell apoptotic rate with flow cytometery. The arterial oxygenation was measured by blood gas analysis, and the pathology determined by light microscope. Results After treatment with 2 L/min of 250 ppm CO i.p., the increase of PAF, ICAM-1, MDA, MPO, and cell apoptotic rate induced by LPS was markedly reduced （P 〈0.05 or 0.01）, and accompanied by ameliorating intestine injury. Western blotting showed that these effects of CO i.p. were mediated by p38 MAPK path

关键词： carbon monoxide intestine injury mitogen activated protein kinase

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双层人工真皮修复跟腱止点外露创面

中国矫形外科杂志 2024年第14期32卷 1326-1330页

作者：刘少华王振虎于洋曹伟宁赵力郭连江吕振木中国人民解放军陆军第八十二集团军医院骨科河北保定071000 河北省中医院骨伤四科河北石家庄050000

[目的]观察双层人工真皮修复跟腱止点外露创面的临床疗效。[方法]2015年4月—2020年8月,对7例合并跟腱止点外露的皮肤软组织缺损的病例,一期予以清创、VSD处理,待创面新鲜干净后,二期应用双层人工真皮覆盖修复。术后2~3 d打开纱布观察... 详细信息

[目的]观察双层人工真皮修复跟腱止点外露创面的临床疗效。[方法]2015年4月—2020年8月,对7例合并跟腱止点外露的皮肤软组织缺损的病例,一期予以清创、VSD处理,待创面新鲜干净后,二期应用双层人工真皮覆盖修复。术后2~3 d打开纱布观察皮片下情况,之后每3~4 d换药1次。术后2~3周,粉红色的类真皮组织覆盖外露的骨质及跟腱,通过定期换药,创面自然上皮化。[结果]本组7例患者创面经自然上皮化后完全愈合,创面自然上皮化的时间为18~34 d。均未行自体皮片移植。术后随访6~18个月,修复后的创面皮肤外形饱满有弹性,无明显瘢痕挛缩及色素沉着,质地耐磨无破溃。末次随访时,AOFAS评分为(90.6±4.6)分,VSS评分为(5.1±1.8)分。[结论]应用双层人工真皮修复跟腱止点外露创面,手术操作简单,损伤小,疗效确切。

关键词：创面跟腱止点外露人工真皮修复

Relationship between depth of anesthesia and effect-site concentration of propofol during induction with the target-controlled infusion technique in elderly patients

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Chinese Medical Journal 2009年第8期122卷 935-940页

作者： liu shao-hua WEI Wei DING Guan-nan KE Jing-dong HONG Fang-xiao TIAN Ming Department of Anesthesiology Beijing Friendship Hospital Capital Medical University Beijing 100050 China

Background There are few studies to assess whether the effect-site concentration of propofol can predict anesthetic depth during the target-controlled infusion （TCI） induction in elderly patients. This study aimed to evaluate the relationship between effect-site concentration of propofol and depth of anesthesia during the TCI induction in elderly patients. Methods Ninety patients （60-80 years） with an American Society of Anesthesiologists （ASA） physical status of 1-3, undergoing scheduled abdominal and thoracic surgery under general anesthesia were randomly allocated into one of three groups, Group S1, S2 and S3 （30 patients in each group）. The patients in Group S1 received propofol with a target plasma concentration of 4.0 pg/ml; patients in Group S2 received propofol with an initial target plasma concentrations of 2.0 IJg/ml that was raised to 4.0 pg/ml 3 minutes later; patients in Group S3 received an infused scheme of 3 steps; starting from a target plasma concentration of 2.0 pg/ml that was increased stepwised by 1 pg/ml until a target plasma concentration of 4.0 pg/ml was achieved, the interval between the two steps was 3 minutes. When an Observer＇s Assessment of Alertness/Sedation （OANS） score of 1 was achieved, remifentanil （effect-site concentration （Ce） of 4.0 ng/ml） and rocuronium 0.9 mg/kg were administered. Tracheal intubation was started 2 minutes after rocuronium injection. Changes of propofol Ce, blood pressure （BP）, heart rate （HR）, and bispectral index （BIS） were recorded. Results When an OAA/S score of 1 was achieved, Ce of propofol were （1.7±0.4） pg/ml, （1.9±0.3） pg/ml, （1.9±0.4） pg/ml and the BIS values were 64±5, 65±8, and 62±8 in Groups S1, S2 and S3. Before intubation, Ce of propofol was （2.8±0.2） pg/ml, （2.8±0.3） pg/ml, （2.7±0.3） pg/ml, and the BIS values were 48±7, 51±7, and 47±5 in Groups S1, S2 and S3. By linear regression analysis, a significant correlation between Ce of propofol and BIS values was found （r=-0.580, P 〈0.01）. Systolic blo

关键词： propofol target-controlled infusion depth of anesthesia effect-site concentration elderly patients

Fluorescence emission from excited molecular ions in intense femtosecond laser fields

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Frontiers of physics 2013年第1期8卷 34-38页

作者： Yun-Chen Wang Cheng-Yin Wu Yuan-Xing liu shao-hua Xu Qi-huang Gong State Key Laboratory for Mesoscopic Physics Department of Physics Peking University Beijing 100871 China

Strong fluorescence emissions were observed for nitrogen, carbon monoxide, and carbon dioxide molecules in intense femtosecond laser fields. These emissions can be assigned to the transitions of the molecular ions from the excited electronic states to the ground electronic states. The formation mechanisms were discussed and the lifetimes were measured for these excited molecular ions in intense laser fields.

关键词： tunneling ionization molecular orbital fluorescence

Strong halo-femoral traction with wide posterior spinal release and three dimensional spinal correction for the treatment of severe adolescent idiopathic scoliosis

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Chinese Medical Journal 2012年第7期125卷 1297-1302页

作者： ZHANG Hong-qi GAO Qi-le GE Lei liu Jin-yang GUO Chao-feng liu shao-hua LU Shi-jin LI Jin-song YIN Xin-hua LI Feng Department of Spine Surgery Xiangya Spinal Surgery CenterXiangya Hosptial Affiliated to Central South UniversityChangshaHunan 410008China

Background Many investigators advocate anterior release combined with halo-femoral traction and posterior fusion when treating stiff thoracic curves in patient with adolescent idiopathic scoliosis （AIS）. But the anterior operations often induce severe complications. Some surgeons choose posterior-only surgery with halo-femoral traction, posterior wide release and correction. But to the best of our knowledge, there are only rare prospective studies on these posterior-only surgeries for AIS patients who have a rigid curve more than 80~ and flexibility less than 35%. Methods Sixty-four AIS patients were recruited from September 2006 to June 2009. All patients had rigid curves and underwent spinal correction. They were randomly divided into group A （combined anteroposterior surgery） and group B （posterior-only surgery）. Images and scoliosis research society-22 questionnaire （SRS-22） scores were performed pre- and post-operation and during follow-up visits. The operation time, blood loss, hospital days, and hospital charges were compared between the two groups. Results These patients were followed for an average of 37.5 months （range, 24-65 months）. No serious complications were observed. There were no significant differences between the two groups in gender, age, preoperative radiographic data, or preoperative SRS-22 score. The average operation time, blood loss, hospital days and hospital charges in group B were less than those in group A. The SRS-22 score in group B was better than in group A at post-operation and at final follow-up. Conclusions In AIS with a rigid curve more than 80~ and flexibility less than 35%, strong halo-femoral traction with wide posterior spinal release and three dimensional spinal correction can provide better SRS-22 scores, comparable curve correction, shorter operation time, less blood loss, shorter hospital stays and lower charges when compared to combined anterior and posterior surgery.

关键词： adolescent idiopathic scoliosis posterior spinal release spinal correction

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改良DSS法制作稳定泡沫的效果评价

中国口腔颌面外科杂志 2024年第3期22卷 245-248页

作者：史宣宣刘怡然石亮陈安威王涛刘少华山东大学齐鲁医学院口腔医学院山东济南250012 山东大学齐鲁医院口腔颌面外科山东济南250012 山东大学齐鲁医院内分泌科山东济南250012

目的:对双注射器系统(double-syringe system,DSS)进行改良,使之能够制作出更稳定的硬化剂泡沫。方法:分别用经典DSS方法和改良DSS方法制备1%聚多卡醇(polidocanol,POL)泡沫。在改良DSS方法中,用自制弹性气囊替代DSS方法中的一个注射器... 详细信息

目的:对双注射器系统(double-syringe system,DSS)进行改良,使之能够制作出更稳定的硬化剂泡沫。方法:分别用经典DSS方法和改良DSS方法制备1%聚多卡醇(polidocanol,POL)泡沫。在改良DSS方法中,用自制弹性气囊替代DSS方法中的一个注射器。改良DSS方法制备POL泡沫过程如下,先用注射器抽取2 mL POL液体,再抽取8 mL空气;之后将注射器与连有自制气囊的三通直线连接,反复推拉注射器20次,产生泡沫。采用泡沫半衰期(foam half-time,FHT)和显微镜观察,比较2种泡沫稳定性及均一性。检测改良DSS方法制备中泡沫体积的变化,比较扭转三通角度后,改良DSS方法制备泡沫的质量。采用GraphPad Prism 8.0软件包对于数据进行统计学分析。结果:用自制弹性气囊替代经典DSS方法中单个注射器的改良DSS方法,能够制备出半衰期更长、微泡更均一的泡沫,可能与泡沫制备过程中的体积压缩有关。同时,改良DSS方法可以通过扭转三通角度,进一步提升泡沫质量。结论:改良DSS方法用弹性气囊替代经典DSS方法中的单个注射器,能够产生更稳定的泡沫。

关键词：脉管畸形泡沫硬化治疗泡沫稳定性 DSS方法

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二氧化碳加氢合成甲醇催化剂研究进展

精细与专用化学品 2024年第9期32卷 14-18页

作者：唐蜜刘少华周红生李娟周玮赵亮华北制药股份有限公司河北石家庄050015 河北诚信集团有限公司河北石家庄051130 河北省氰衍生物技术创新中心河北石家庄051130 河北省精细化学品产业技术研究院河北石家庄051130

在“碳达峰、碳中和”的发展目标下,二氧化碳(CO_(2))热催化还原可以实现CO_(2)的资源化循环,还能将其转换为燃料和增值化学品。CO_(2)加氢合成甲醇是近些年最受关注的碳减排和储氢技术之一,其中高活性、高选择性、高稳定性的催化剂能... 详细信息

在“碳达峰、碳中和”的发展目标下,二氧化碳(CO_(2))热催化还原可以实现CO_(2)的资源化循环,还能将其转换为燃料和增值化学品。CO_(2)加氢合成甲醇是近些年最受关注的碳减排和储氢技术之一,其中高活性、高选择性、高稳定性的催化剂能够克服CO_(2)转化过程的热力学障碍并抑制副产物产生,是CO_(2)加氢制甲醇的关键环节。综述了CO_(2)加氢合成甲醇反应所用催化剂,包括Cu基催化剂、其他金属催化剂及金属氧化物催化剂的研究进展,并展望了其工业化前景。

关键词：二氧化碳加氢甲醇催化剂