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在轴性脊柱小关节突紊乱中表观扩散系数作为评估脊柱病变活动性的影像学生物指标

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国际医学放射学杂志 2019年第3期 362-363页

作者：景瑞 K.H.Lee H.Y.Chung X.P.Xu v.W.H.lau C.S.lau Department of Radiology Queen Mary Hospital

摘要目前尚未建立可量化的指标评估轴性脊柱关节炎(SpA)。既往研究表明扩散加权(DW) MRI可以反映轴性Sp A的病变活动性。目的明确在轴性SpA病人中病变活动

关键词：活动性脊柱炎强直性

Encapsulation of Immature Somatic Embryos of Coffea arabica *** in vitro Preservation

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Phyton-International Journal of Experimental Botany 2021年第6期90卷 1741-1748页

作者： Eliana Arias-Pérez Carlos Alberto Lecona-Guzmán Federico Antonio Gutiérrez-Miceli Joaquín Adolfo Montes-Molina Nancy Ruiz-lau Laboratorio de Biotecnología vegetal Instituto Tecnológico de Tuxtla GutiérrezTecnológico Nacional de MéxicoTuxtla GutiérrezChiapas29050México CONACYT-Tecnológico Nacional de México/Instituto Tecnológico de Tuxtla Gutiérrez Tuxtla GutiérrezChiapas29050México

The present study aimed to develop a protocol for somatic embryogenesis and encapsulation of coffee embryos(Coffea arabica L.),for the conservation of genotypes with characteristics of commercial *** embryos were induced from leaf explants in Murashige and Skoog medium(MS)supplemented with 1 mg·L^(−1) of 2,4-dichlorophenoxiacetic acid(2,4-D)combined with 2 mg·L^(−1) of benzyladenine(BA).Somatic embryos(SE)at the globular stage were encapsulated in a sodium alginate matrix;two treatments were tested:MS+5 mg·L^(−1) BA+1 mg·L^(−1) NAA+3%(w/v)alginate,and MS+7 mg·L^(−1) BA+5.7 mg·L^(−1) indoleacetic acid(IAA)+3%(w/v)*** was complexed with 100 mM calcium chloride(CaCl_(2)).viability of the encapsulated SE was determined by staining with 0.01%fluorescein diacetate(FDA)after 0,15,30,and 45 days of storage at 4℃.Embryo viability was 100%in both treatments.

关键词： Coffee explants embryo artificial seeds

Socio-economic status and lifestyle factors are associated with achalasia risk: A population-based case-control study

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World Journal of Gastroenterology 2016年第15期22卷 4002-4008页

作者： Helen G Coleman Ronan T Gray Kar W lau Conall Mc Caughey Peter v Coyle Liam J Murray Brian T Johnston Cancer Epidemiology and Health Services Research Group Centre for Public Health Queen’s University Belfast Regional virus Laboratory Royal Victoria Hospital Belfast Department of Gastroenterology Royal Victoria HospitalBelfast

AIM: To evaluate the association between various lifestyle factors and achalasia ***: A population-based case-control study was conducted in Northern Ireland, including n = 151 achalasia cases and n = 117 age- and sexmatched controls. Lifestyle factors were assessed via a face-to-face structured interview. The association between achalasia and lifestyle factors was assessed by unconditional logistic regression, to produce odds ratios(OR) and 95% confidence interval(CI).RESULTS: Individuals who had low-class occupations were at the highest risk of achalasia(OR = 1.88, 95%CI: 1.02-3.45), inferring that high-class occupation holders have a reduced risk of achalasia. A history of foreign travel, a lifestyle factor linked to upper socioeconomic class, was also associated with a reduced risk of achalasia(OR = 0.59, 95%CI: 0.35-0.99). Smoking and alcohol consumption carried significantly reduced risks of achalasia, even after adjustment for socio-economic status. The presence of pets in the house was associated with a two-fold increased risk of achalasia(OR = 2.00, 95%CI: 1.17-3.42). Nochildhood household factors were associated with achalasia ***: Achalasia is a disease of inequality, and individuals from low socio-economic backgrounds are at highest risk. This does not appear to be due to corresponding alcohol and smoking behaviours. An observed positive association between pet ownership and achalasia risk suggests an interaction between endotoxin and viral infection exposure in achalasia aetiology.

关键词： Achalasia Risk factors Epidemiology Lifestyle Socio-economic status

AUDI R8 v10 PLUS：寒雨天急行记

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汽车测试报告 2016年第6期 82-85页

作者： EDMOND lau MANUFACTURER

日内瓦车展后，立即赶往慕尼黑拿了一台R8 v10 Plus和TTS Roadster试试。一天时间，朝九晚五，要赶往德国最高峰所在地。

关键词： v10 AUDI PLUS Roadster 雨天日内瓦车展 Plus 慕尼黑

A low power 50Hz argon plasma for surface modification of polytetrafluoroethylene

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Plasma Science and Technology 2022年第11期24卷 1-13页

作者：刘恩婷赵伟祥李鸿俊胡浩俊陈爱虹杜德扬 Department of Physics Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Faculty of Engineering Multimedia UniversityPersiaran CyberjayaCyberjaya 63100Malaysia

The characteristics of a low power 50 Hz argon plasma for surface treatment of polytetrafluoroethylene(PTFE)film is presented in this *** current–voltage behavior of the discharge and time-varying intensity of the discharge showed that a DC glow discharge was generated in reversed polarity at every *** discharge power between 0.5 and 1 W,the measured electron temperature and density were 2–3 ev and∼10^(8) cm^(−3),*** optical emission spectrum of the argon plasma showed presence of some‘impurity species’such as OH,N_(2) and H,which presumably originated from the residual air in the discharge *** exposure of PTFE films to the argon glow plasma at pressure 120 Pa and discharge power 0.5 to 1 W,the water contact angle reduced by 4%to 20%from the original 114°at pristine condition,which confirms improvement of its surface *** increase in wettability was attributed to incorporation of oxygen-containing functional groups on the treated surface and concomitant reduction in fluorine as revealed by the XPS analysis and increase in surface roughness analyzed from the atomic force *** upon storage in ambient air showed retention of the induced increase in surface wettability.

关键词： 50 Hz glow discharge plasma surface treatment PTFE hydrophobic recovery ageing effect

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我怀念的是…

汽车测试报告 2013年第8期 86-89页

作者：陈欢 Edmond lau(图)

我怀念的是v10发动机，我怀念的是一起加速，我怀念的是怀疑以后还是有想要你的冲动。对了，直接讲清比较好，就是我喜欢上一代奥迪RS6远远多过这一代。原因呢？只有一个，就是它的v10双涡轮增压发动机。

关键词：涡轮增压发动机奥迪RS6 v10

Expression of TRP channels in arterial baroreceptor neurons

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Expression of TRP channels in arterial baroreceptor neurons

短暂性左室心尖球形综合征(Takotsubo心肌病)是永久性起搏器植入的并发症

第八届海峡两岸心血管科学研讨会

作者： On Chai lau,Ching On WONG,Yu Huang,Xiaoqiang YAO (School of Biomedical Sciences,the Chinese University of Hong Kong,China)

Objectives TRP channels are a superfamily of non - selective cation channels that can be divided into seven subfamilies:TRPA,TRPC,TRPM,TRPML,TRPN,TRPP,and *** TRP isoforms have been reported to be the sensors for diverse source of external and/or internal *** baroreceptors are the mechanosensor to detect blood ***,the molecular identity underlying the mechano - sensation in the baroreceptor is not well *** reports have suggested that TRPC1,- C5,- C6,- v1,- v4 are ***,in the present study,the role of TRP channels in the pressure sensing of the aortic baroreceptor neurons is *** Immunohistochemistry,RT - PCR and Western blotting were employed to explore the expression of mechanosensitive TRP isoforms in the rat aortic *** imaging and electrophysiological studies were used to investigate the functions of TRP channels in cultured baroreceptor *** Immunohistochemistry studies demonstrated that TRPC1, - C5,- C6,- v4 are expressed in the aortic baroreceptor nerve terminal which is located on the aortic arch, along the nerve fibre(aortic depressor nerve) and in the ganglion region(nodose ganglion).Moreover,RTPCR and western blotting using isolated rat nodose ganglion also showed the expression of some TRP channels. In Ca imaging studies of cultured aortic baroreceptor neurons,T5E3,a TRPC5 blocking antibodies,and daidzein,a TRPC5 potentiator,were able to block and potentiate the[Ca] response upon osmo - mechanical stimuli *** studies showed that daidzein could potentiate the pressure - induced action potential firing in isolated aortic baroreceptor neurons and the action potential could also be blocked by 2 -APB,which is a cation channel *** In summary,our study suggests that TRPC5 is involved in the pressure sensing of aortic baroreceptor *** mechanosensitive TRP channels: TRPC1,- C6,- v4,might also be involved

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世界核心医学期刊文摘(心脏病学分册) 2007年第9期 49-50页

作者： Chun S.G. Kwok v. Pang D.K. lau T.K. 郭俊 Department of Medicine University of Hawaii John A. Burns School of Medicine Honolulu HI United States

背景:Takotsubo心肌病是新近描述的一种罕见临床疾病,以无血管造影显著冠状动脉疾病证据的短暂性左室心尖球形改变及运动不能为特征,主要见于绝经后女性。该病于2004年在美国首次证实,且仅在日本患者和白人患者中曾被报道。病例报道:1... 详细信息

背景:Takotsubo心肌病是新近描述的一种罕见临床疾病,以无血管造影显著冠状动脉疾病证据的短暂性左室心尖球形改变及运动不能为特征,主要见于绝经后女性。该病于2004年在美国首次证实,且仅在日本患者和白人患者中曾被报道。病例报道:1例77岁的夏威夷

关键词：心尖球形综合征左室心肌病心肌疾病 Takotsubo 短暂性

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高频浅体声波晶体频率源

宇航计测技术 1985年第S1期 211-217页

作者： K.v.Rousseau K.H.Yen K.F.lau A.M.Kong 李建三

本文论述了高频浅体声波(SBAW)晶体延迟线的设计和制造。为了避免低频体波源倍频后固有相位噪声的增大,就要求直接产生频率为千兆赫范围的信号。如果用一个体波晶体锁定千兆赫频率,就可改善其近载频相位噪声。本文所提到的延迟线采用近... 详细信息

本文论述了高频浅体声波(SBAW)晶体延迟线的设计和制造。为了避免低频体波源倍频后固有相位噪声的增大,就要求直接产生频率为千兆赫范围的信号。如果用一个体波晶体锁定千兆赫频率,就可改善其近载频相位噪声。本文所提到的延迟线采用近似AT和BT切晶体,因为AT切具有高的波速,而BT切则具有良好的温度稳定性。采用串联模型来选择设计参数。该模型利用窗口宽度,指数,波速及耦合常数来预测辐射电阻、电容和转换损耗。把该模型与传输损耗的实测数据结合起来考虑,就能准确地预测延迟线的总插入损耗。近来对该模型的仔细研究表明,在千兆赫频率上,插入损耗和Q值之间有着很好的折衷解决办法。用电子刻蚀法在有机玻璃保护层上做出0.4μm的图形。保护层一般是单层的。但也试验过多层方案。已经提出金属换能法的叉指是否灌封在晶体中的判断准则。通常金属叉指并不灌封在晶体中,器件仍具有低的插入损耗、高的Q值及良好的温度稳定性。AT切晶体的基波与五次泛音延迟线和BT切晶体的五次泛音延迟线均采用卸下(Lift—off)法制作。频率范围为3—5GHz。其最好的延迟线的插入损耗不到20,Q值大于2000。使用在高真空下冷焊的TO—8外壳还设计出了低耦合的封装。此延迟线不用有机材料,而是将其固定在一个无应力的不锈钢支架上。本文也给出了相应噪声和预老化数据。

关键词：延迟线 BT 馈电设备体声波损耗损失消耗泛音奏法频率源晶体千兆赫