三重疗法治疗雄激素性脱发疗效分析

目的:通过三重疗法治疗雄激素性脱发,并进行疗效分析。方法:66例雄激素性脱发病人随机分为试验组与针刺组,每组各33例。试验组采取针刺、梅花针联合实按灸疗法,针刺组采取针刺疗法。记录两组患者的疗效及伴随症状评分情况。结果:试验组的总有效率为81. 82%,针刺组的总有效率为57. 58%。两组的疗效比较差异具有统计学意义(P <0. 05)。治疗后,试验组的伴随症状评分均低于针刺组,差异均具有统计学意义(P <0. 05)。结论:电针、梅花针联合实按灸疗法治疗雄激素性脱发疗效显著,临床上具有推广及应用价值。中国中医科学院“十三五”重点领域研究专项第一批(No.ZZ10-011-1-2

基于变速器振动特性的齿轮异常磨损分析

变速器由于各种激振产生复杂的振动，不仅关系到乘坐舒适性，对传动系统各零件寿命和可靠性都有重要的影响。在设计开发阶段考虑变速器的激振来源以及内部零件与外部换挡操纵的模态，可有效改善变速器相关振动问题。通过某机械式变速器整车耐久试验中挡位齿轮结合齿早期异常磨损引起的换挡手柄抖动分析，从振动特性为出发点，推论出主减齿轮为激振源，一轴总成、平衡块等产生叠加共振。提出改善对策并通过了试验验证

Vibration Control for Flexible Manipulator Based on the Combining of Jet Thruster and Piezoelectric Actuators

空间机器人和大型柔性空间结构在航天器调姿、变轨、外部扰动的情况下将引起振动问题,其低频大幅值振动将持续很长时间,这将影响航天器系统的稳定性和控制精度。为了快速抑制低频大幅值振动及残余振动,提出采用复合可控反作用力幅值的喷气式驱动和压电陶瓷驱动方案进行振动控制。进行基于复合控制的柔性臂系统动力学建模并给出控制算法。设计并建立柔性机械臂试验平台,构建气动驱动控制回路及压电驱动控制回路。进行基于压电陶瓷驱动器、喷气式驱动器及复合喷气和压电驱动器的柔性臂大幅值低频模态振动控制的几种方法试验比较研究。试验结果表明,采用的控制方案和方法既可以快速地抑制柔性机械臂统的低频大幅值振动,又明显地同时抑制高频和低频小幅值残余振动

Research on resisting the vibration of harmonic drive system by using acceleration feedback control

在分析谐波传动系统特性的基础上，建立了谐波传动系统的基于加速度传感器反馈控制的数学模型，通过仿真分析和实验研究结果表明，加速度反馈控制能有效地换制谐波传动系统负载端的振动

Event-based discontinuous control for harmonic drive system with the damping enhancement of acceleration feedback

This paper presents an event-based discontinuous control scheme for harmonic drive transmission. It is composed of two control strategies, namely, the motor-side PD control refined by load-side acceleration feedback, and the output torque control. Switching between these two modes is based on the external working condition of HD. This intends to generate appropriate control actions according to the actual problems of HD, which are different and closely dependent on its external conditions. Extensive experiments are conducted on a single link device driven by AC motor and harmonic transmission to test the performance of the proposed scheme

新疆阿其克布拉克-梧桐沟一带金铜找矿靶区优选与评价

“新疆阿其克布拉克￣梧桐沟一带金铜找矿靶区优选与评价”系国家科技攻关项目“加速查明新疆贵重有色金属大型矿产资源基地综合研究”下属的子课题，编号：８５－９０２－０５－０５（Ａ）。发现和厘定了具重大找矿意义的三条巨型韧性剪切带（红山、康古尔、梧桐沟），重点剖析了红山金矿；研究了与成矿作用关系密切相关的五大因素；即构造单元及构造岩、矿源岩与矿源层、岩浆岩、变形变质及蚀变，含硫化物石英细脉等成矿的关系；总结了成矿规律和找矿标志、建立了成矿模式、指明了找矿方向；并将研究区划分为三个构造成矿带，提供普查基地一处，两个找矿靶区和四个远景区。经工程揭露及类比评价，红山金矿有近百条金矿（化）体，一般长１５００－２０００ｍ，宽１－４ｍ，一般Ａｕ品位３－６ｇ／ｔ。部分大于１０ｇ／ｔ，金山品位３．７ｇ／ｔ。后经３０５项办组织探边采，品位高的达８０ｇ／ｔ以上，并向深部品位变富，矿体变厚。其中有１５条矿体有稀疏工程控制，大部采用类比，共计算Ｅ＋Ｆ级科研预测储量近６０吨，预测进一步工作，可望达到特大型规律

Evaluation of Therapeutic Effect of Atmospheric Low Temperature Nitrogen Plasma on Photoaging Rat Skin

目的评估大气压低温氮等离子体治疗大鼠光老化皮肤的疗效。方法采用健康雌性SD大鼠40只,随机分为2个大组:正常对照组(A组)和模型组(B组),其中模型组又分为3个小组,分别为等离子体低剂量治疗组(B1组)、等离子体高剂量治疗组(B2组)和自然恢复组(B3组)。共计4组,每组10只。除正常对照组(A组)外,B组均采用UVA+UVB紫外线灯同时照射,每日2 h,连续照射60 d,制备大鼠皮肤光老化模型。SD大鼠光老化制模成功后,给予自制大气压低温氮等离子体治疗。B1组采用0.1 W/mm~2等离子体低剂量治疗,连续治疗4次,每次间隔时间2周;B2组采用0.3 W/mm~2等离子体高剂量治疗,连续治疗2次,每次间隔时间4周;B3组无等离子体治疗,自然恢复。每次治疗后观察各组大鼠皮肤即刻反应及恢复情况,分别于治疗前和治疗后1个月活检取材,进行常规HE染色和Masson三色染色。观察治疗前后大鼠皮肤的大体变化和组织病理学变化,并用Image-Pro-Plus 6.0病理图文分析系统测定大鼠皮肤胶原蛋白含量变化。结果采用等离子体治疗组大鼠皮肤光老化大体变化和病理改变明显改善。B1组和B2组与B3组比较胶原含量明显增加,差异具有显著意义(P<0.05)。B1组和B2组两组组间比较,疗效无明显差异。结论等离子体对皮肤光老化有明显的治疗作用,具有术后恢复快、不良反应低等优点。Objective To evaluate the effect of atmospheric low temperature nitrogen plasma regeneration technique in treating photoagingrats.Methods An experimental study was performed on 40 female SD rats.All rats were randomly assigned to two primary groups:normal control group A and model group B.The model group B were further divided into 3 secondary sub-groups:low-energy treatment group B1,high-energy treatment group B2 and model control group B3.As a result,the 40 SD rates were eventually randomized 1:1:1:1 to the 4 groups(A,B1,B2 and B3) with 10 SD rats in each group.Except those inthe group A,the SD ratswere irradiated with UVA plus UVB for 2 hours per day to establish a skin photoagingmodel.After 60 days,the skin photoaging model was established.The atmospheric low temperature nitrogen plasmadevice was designed and set up.The rats in group Bl were given 4 treatments in total,once every 2 weeks with the energy set at 0.1 W/mm~2.In the meantime,The rats in group B2 underwent 2 treatments,once every 4 weeks with the energy set at 0.3 W/mm~2.After each treatment,the degree of downtimeand erythema were recorded.Full-thickness skin biopsy specimens were obtained from each group before the treatment and 30 days following the last treatment respectively.Clinical characteristicswere observed and histological analysis was performed usingroutine Hematoxilin-Eosin staining and Trichrome-Masson staining.The content of dermal collagen wasmeasured with Image Pro-Plus 6.0 software.Results Clinical and histological observation showed that both plasma treatment groups(B1 and B2) were significantly improved,and the collagen increasedremarkably compared to the model control group(B3),(P < 0.05).There was no difference between low-energy treatment group(B1) and high-energy treatment group(B2).Conclusions The atmospheric low temperature plasma regeneration technique is highly effective in treating photoaging skin with minimal down-time and few side effects.福建省教育厅科技项目(JB11049);; 泉州市科技计划项目(2012Z55重点项目