Wing Chun Culture:Bridge of Mutual Understanding Between China and Sri Lanka

The art of Wing Chun transcends geographical boundaries and cultural differences,with an impressive number of over 10 million practitioners spread across more than 80 countries and regions.This remarkable global reach serves as a testament to its captivating allure and unparalleled ability to forge connections among individuals from diverse backgrounds.

Using Flowable Composite as Gingival Retraction Cord in Prosthodontics Dentistry: Two Case Reports: A Dental Technique

One of the most challenging factors affecting impression quality and good marginal fit is the gingival retraction method, which aims to separate the gingiva from the tooth to expose the finishing line of the prepared tooth. Bleeding and contamination from the crevicular fluid may compete for space with the impression material within the sulcus, leading to indistinct preparations and a lack of detail at the margin. In addition, such procedures might damage the PDL and cause permanent recession. Flowable composite cable, as opposed to traditional retraction cords, offers the proper marginal seal and visibility during the impression record because of its lower viscosity, improved adaptability, and elastic properties. The aim of this report is to present a brand-new, innovative method for controlling gingival hemorrhage in addition to the gingival retraction in restorative and prosthodontic treatment by utilizing a flowable composite during the final impression record procedure. In these case reports, the flowable composite cord technique is used instead of traditional gingival cords to modify and refine the gingival tissue before taking the traditional final impression or digital scan. Two cases were done for patients undergoing fixed prosthodontics and veneer treatment within a 2-year follow-up period. In addition, the flowable composite cord was used as temporary restoration before the final prosthetic cementation or under the provisional crowns. As a result, clean and healthy gingival tissues render cementation of the final prosthesis quicker and easier to perform. The patients in both cases claimed that their prosthodontic treatments, which involved the application of a flowable composite cord to temporarily retraction the gingiva, had produced good outcomes at the yearlong follow-up. In conclusion, the flowable composite cord technique is found to be a useful tool to improve the quality of impressions in fixed prosthodontics by providing excellent access for impression material to record fine details of the finish line of the prepared tooth structure, and to alter the inflamed tissue into a healthy tissue.

Ground Gained amid Adversity

While global economic recovery still falters,the Chinese economy stood out in the first half of the year(H1)with a year-on-year GDP growth of 5.5 percent,the fastest among major economies.Given a complex international environment-exacerbated by high global infla­tion and the spillover effect of certain major economies’tightening monetary policy-China’s impressive economic performance augurs an upbeat development trajectory in the second half of the year.It also reflects the country’s impressive economic resilience.

Prospects for a New Era in China's Engagement with International Law and Dispute Settlement

This short essay aims to share my impressions as a foreign expert who has had the unique opportunity to witness,while currently based in Xi’an,the 20th CPC National Congress,held in Beijing from 16 October 2022.I have been kindly asked to share these impressions with my colleagues at Xi’an Jiao-tong University(XJTU),particularly its School of Law and Silk Road Institute for International and Comparative Law,august scholarly institutions of which I am very proud to have latterly become a member.

Ceramage聚合瓷嵌体在后牙牙体缺损修复中的应用

目的:研究Ceramage聚合瓷嵌体用于后牙牙体缺损修复的临床疗效。方法:前磨牙及磨牙Ⅱ类洞患者130例(共165颗)随机分为两组:制作Ceramage聚合瓷嵌体85件、IPSImpressⅡ铸瓷嵌体80件做为对照。随访2年,比较两组嵌体颜色、形态、边缘密合度、基牙继发龋、修复体折裂、牙龈指数、菌斑指数等指标。结果:两组嵌体在颜色、形态、边缘密合度、基牙继发龋、牙龈指数、菌斑指数等指标上无显著性差异;在修复体折裂方面,Ceramage聚合瓷嵌体组优于IPSImpressⅡ铸瓷嵌体组。结论:Ceramage聚合瓷嵌体是一种较好的新型牙体缺损修复体。

IPS Impress Ⅱ铸瓷修复体在前牙美容修复中的临床效果评价

目的:评价IPS Impress Ⅱ铸瓷修复体在前牙美容修复中的临床效果。方法:对47例患者(158颗牙)进行IPS Impress Ⅱ铸瓷全冠修复,修复后1周及每半年复诊一次,评价内容包括:边缘完整性、解剖外形、表面、颜色。结果:在随访期内,4颗牙发生饰面瓷崩瓷,2颗牙因基牙折断致牙冠与修复体一起脱落,3颗牙出现牙龈红肿,3颗牙发生牙髓炎或根尖周炎,2颗牙色泽变暗,其余144颗牙修复效果满意,满意率为91.1%。结论:IPS Impress Ⅱ铸瓷修复体对前牙行冠桥修复可获良好临床效果。

两种不同材料嵌体用于后牙修复的临床效果比较

目的:比较Solidex硬质树脂嵌体及IPSImpress2铸瓷嵌体用于修复后牙缺损的临床治疗效果。方法:临床完成Solidex嵌体72个,IPSImpress2嵌体83个,随访观察6个月、1年、2年,参考美国公共健康会(USPHS)标准,对其临床效果进行观察。结果:2种嵌体在边缘着色、边缘密合度及继发龋发生等方面没有显著差异(P>0.05)。结论:Solidex硬质树脂嵌体适用于咬合力大的患者I,PSImpress2铸瓷嵌体适用于美观要求高的患者。

颅底凹陷症的治疗选择

本症属上颈椎与颅底先天性畸形的一种,临床上并非少见。它以疼痛性斜颈、短颈、后鬓际低下及神经症状为其临床特点。结合特有的X线表现、诊断并不困难,对有明显神经症状者,手术乃是唯一的治疗方法。

Literary Impressionism in Willa Cather's Novels

In her writing,Willa Cather absorbed the techniques of the impressionist painters,striving to present human perception and fo-cus their individual impression on a fleeting moment to provide the fragments of impression upon which the whole can be constructed.

Seeing People Off学习任务答案与篇章讲解赏析

十期答案1. Explain the following words and expressions(highlighted in blue) in English.(1) feat, lamentably(Para. 2)a) feat: If you refer to an action, or the result of an action, as a feat, you admire it because it is an impressive and difficult achievement.b) lamentably: very unfortunately or disappointingly(2) farce(Para. 3)a) farce: If you describe a situation or on event as a farce, you mean that it is so disorganised or ridiculous that you cannot take it seriously.

Justification for Marcel's“Reading First”

As one of the outstanding figures in the pre-Reform Movement in the nineteenth century,Marcel was known to us by his fa-mous proposal of"reading first".However,he and his proposal were unfairly neglected by his contemporaries and his successors.In fact,thisproposal was based on a rational theory of reading: the cognitive process of reading and the distinction between impression and expression.This proposal is worth attending to afresh.

几种新型手枪射击弹壳上痕迹特征浅析

为了适应新形势下枪弹检验工作的需要,我中心枪弹处于1997、1998年分别购置了一批新型枪支.其中有13种配用9mm×19mm巴拉贝鲁姆手枪弹的新型手枪,它们分别是213型9毫米手枪、213A型9毫米手枪、七七B型9毫米手枪、七七B2型9毫米手枪、NP20型9毫米手枪、NP22型9毫米手枪、NP28型9毫米手枪、NP38型9毫米手枪、201C型9毫米手枪和NZ75型9毫米手枪.为了让更多的同行了解这13种新型手枪发射子弹的弹壳上的主要痕迹特征,我们制作了一些样本.由于每种枪仅购置了一支,故本文所介绍的有些痕迹特征究竟属于种类特征,抑或是个别特征,还有待于作进一步的实验和研究.将13种枪支划分为5组分别进行论述:一组:213型、213A型;

A randomized controlled trial of omega-3 fatty acids in dry eye syndrome

AIM:To evaluate the role of dietary supplementation of omega-3 fatty acids in dry eye syndrome.METHODS:A prospective,interventional,placebo controlled,double blind randomized trial was done at two referral eye centers.Two hundred and sixty-four eyes of patients with dry eye were randomized to receive one capsule(500mg)two times a day containing 325mg EPA and 175mg DHA for 3 months(omega-3 group).The omega-3 group was compared to a group of patients(n=254)who received a placebo(placebo group).There were 4 patient visits(at baseline,1 month,2 months and3 months).On each visit,recording of corrected distance visual acuity(CDVA),slit lamp examination and questionnaire based symptom evaluation and scoring was done.A symptomatic score of 0-6 was mild,6.1-12moderate and 12.1-18 severe dry eye.Response to intervention was monitored by routine tear function tests like Schirmer I test,tear film break-up time(TBUT),Rose Bengal staining and most notably,conjunctival impression cytology.RESULTS:Sixty-five percent of patients in the omega-3group and 33%of patients in placebo group had significant improvement in symptoms at 3 months(P=0.005).There was a significant change in both Schirmer’s test value and TBUT values in the omega-3group(P【0.001),both comparisons.However,there was a larger drift in TBUT values in omega-3 than the placebo group,in comparison to Schirmer’s test values.The mean TBUT score was 2.54±2.34 in the omega-3group and 0.13±0.16 in placebo group,respectively.The mean reduction in symptom score in omega-3 group was 2.02±0.96 as compared to 0.48±0.22 in placebogroup(P【0.001).Despite a slight increase mean score,the Schirmer scores did not correlate well with symptomatic improvement.CONCLUSION:Omega-3 fatty acids have a definite role for dry eye syndrome.The benefit seems to be more marked in conditions such as blepharitis and meibomian gland disease.The role of omega fatty acids in tear production and secretion needs further evaluation.

Effect of Ca addition on microstructure and impression creep behavior of cast AZ61 magnesium alloy

Microstructure and creep properties of AZ61 alloy containing 1 and 3 wt.% Ca were investigated. The creep properties were examined using impression method under different stresses between 200 and 500 MPa at the temperature ranging from 423 to 491 K. The microstructure of AZ61 alloy contains α(Mg) matrix and Mg17 Al12 intermetallic phases. It is shown that adding Ca to AZ61 alloy reduces the amount of Mg17 Al12 phase via forming(Mg,Al)2 Ca phase;furthermore, increasing the Ca content to 3 wt.% leads to the formation of(Mg,Al)2 Ca phase, as well as the elimination of the Mg17 Al12 phase. Creep properties of AZ61 alloy are improved with the Ca addition. The improvement in creep properties is attributed to the reduction in the amount of Mg17 Al12 phase and the formation of(Mg,Al)2 Ca phase with high thermal stability. According to the obtained creep data, it is concluded that the pipe diffusion-climb controlled dislocation creep is the dominant creep mechanism and Ca addition has no influence on this mechanism. The effect of pre-deformation on the creep properties of AZ61+3%Ca alloy reveals that the creep resistance of the alloy depends on the continuity of(Mg,Al)2 Ca phase. It is decreased by reducing the phase continuity.

Effect of Mg and semi solid processing on microstructure and impression creep properties of A356 alloy

The effects of Mg and semi solid processing on the creep properties ofA356 A1 alloy were investigated. The results show that the dislocation climb controlled creep is the dominant creep mechanism and it is not affected by the semi solid processing and further addition of Mg. Mg improves the alloy creep properties probably by forming large Chinese script Mg2Si compounds at the interdendritic regions. The semi solid processed specimens exhibit better creep properties in comparison with the as cast ones. It is attributed to the reduction in the stacking fault energy resulting from the significant dissolution of Mg in the a（A1） phase.

Low temperature friction stir welding of P91 steel

Bead-on-plate friction stir welds were made on P91 alloy with low and high rotational speeds(100 and 1000 RPM) to study their effects on weld microstructural changes and impression creep behavior. Temperatures experienced by the stir zone were recorded at the weld tool tip. Different zones of welds were characterized for their microstructural changes, hardness and creep behavior(by impression creep tests). The results were compared with submerged arc fusion weld. Studies revealed that the stir zone temperature with 100 RPM was well below A_(c1) temperature of P91 steel while it was above A_(c3) with 1000 RPM. The results suggest that the microstructural degradation in P91 welds can be controlled by low temperature friction stir welding technique.

Corneal sensitivity,ocular surface health and tear film stability after punctal plug therapy of aqueous deficient dry eye

AIM： To evaluate the effect of punctal occlusion using thermosensitive（smart plug） versus silicone plug for management of aqueous deficient dry eye on cornea sensitivity, ocular surface health and tear film stability.METHODS： A comparative prospective interventiona case study included 45 patients with bilateral severe form of aqueous deficient dry eye. In each patient, the smar plug was inserted in the lower punctum of the right eye which was considered as study group 1 and silicone plug was inserted in the lower punctum of the left eye o the same patient which was considered as study group2. All patients were subjected to careful history taking and questionnaire for subjective assessment of severity of symptoms. Corneal sensitivity, corneal fluorescein rose bengal staining, Schirmer＇s I test, tear film break up time and conjunctival impression cytology were performed pre and 1, 3 and 6mo post plug insertion.RESULTS： A statistically significant improvement in subjective and objective manifestations occurred following treatment with both types of plugs（P 〈0.01）The thermosensitive plug caused significant overal improvement, decrease in frequency of application o tear substitutes and improvement of conjunctiva impression cytology parameters in the inserted side（P 〈0.01）. Canaliculitis was reported in two eyes（4.4% following punctal occlusion using thermosensitive plug（study group 1）. Spontaneous plug loss occurred in 21eyes（46.6%） in the silicone plug group（study group 2）.CONCLUSION： Improvement of subjective and objective manifestations of aqueous deficient dry eye occurs following punctal plug occlusion. Thermosensitive plug has good patient＇s compliance with fewer complications and lower rates of loss compared to the silicone plug.

Advanced Analysis of HVDC Electrodes Interference on Neighboring Pipelines

This paper focuses on advanced analysis techniques and design considerations of DC interference generated by HVDC electrodes during normal bipolar and temporary monopolar operations on neighboring metallic utilities, with a special emphasis on buried gas and oil pipelines. This study examines the level of pipeline corrosion, the safety status in the vicinity of exposed appurtenances and the impact of DC interference on the integrity of insulating flanges and impressed current cathodic protection (ICCP) systems. Computation results obtained for different soil models show that different soils can lead to completely different DC interference effects. The results and conclusions presented here can be used as a reference to analyze the severity of DC interference on pipelines due to proximate HVDC electrodes.

Conjunctival impression cytology in non-proliferative and proliferative diabetic retinopathy

AIMTo examine the integrity of the ocular surfaces of subjects with and without diabetes with no conjunctival and dry eye signs and symptoms and compare conjunctival impression cytology findings in diabetics with non-proliferative and proliferative diabetic retinopathy.