Physical and Chemical Characterizations of Rubber Latex Cup Bottom Oil

Rubber latex is an important economic resource. However, the residues from its harvesting are thrown away, even though they contain lipids that can be recycled. This recovery of the residues from the bottom of the cup requires first and foremost their characterization. The aim of this study is therefore to determine the main physical and chemical characteristics of rubber latex cup bottom oil. Oil’s physical parameters determination shows that it has a density of 951 kg∙m−3, a kinematic viscosity of 48.57 cSt and a water content of 0.0845%. Chemical parameters, meanwhile, indicate that this cup bottom residue has a fat content of 95.96%, an acid number of 2.805 mg KOH/g and an iodine number of 92.42 g I2/100g. Therefore, rubber latex cup bottom oil can be used in the formulation of biofuels, biolubricants, paints, varnishes, alkyd resins, polishing oils, soaps, and insecticides.

基于CUPS的国产操作系统打印管控的应用研究

随着信息技术的快速发展和信息安全防护工作要求的不断提高,我国一些企事业单位正在逐步使用国产操作系统,在其上的打印管控已成为不可缺少的一部分,但目前适用于国产操作系统的打印系统尚未成熟.针对此问题,首先研究了通用Unix打印系统(common unix printing system,CUPS)原理,然后针对国产操作系统提出基于CUPS架构的打印系统,设计打印机驱动,并将设计的打印系统部署在国产操作系统中,实现了在国产中科方德操作系统上的打印管控.测试结果显示其效率高、体积小、方便快捷,具有较强的应用价值.

Mid-term clinical outcomes of the uncemented Robert Mathys pressfit cup

BACKGROUND The use of uncemented cups during total hip arthroplasty(THA)has gained popularity in recent years.The Robert Mathys(RM)pressfit cup,an uncemented monoblock implant is expected to preserve bone density due to its composition and external surface,while reducing backside wear with its monoblock construction.These factors should lead to a high survival rate of the implant.AIM To evaluate the mid-term survival and functional outcome of the RM Pressfit cup in a large study population.METHODS Between 2011 and 2020,we included 1324 patients receiving a primary THA using the RM pressfit cup.Final clinical follow-up was performed at 2 years postoperatively with the Dutch arthroplasty register used to assess implant status thereafter.Revision for acetabular failure and reason for revision were reported to evaluate implant survival,while the hip disability and osteoarthritis outcome score(HOOS)scores were used to assess functional outcome.RESULTS The mean age at surgery was 64.9 years.The mean follow-up was 4.6 years.Of the 1324 THAs performed,13 needed cup revisions within 5 years after index THA:5 due to aseptic loosening,6 due to infection,2 due to dislocation and 2 due to other causes.This resulted in a 5-year cup survival of 98.8%(95%CI:98.1-99.5).Nine of the cup revisions occurred within the first year after index THA.HOOS scores increased significantly in all domains during the first year and levelled out during the second year.CONCLUSION In the present study,the RM pressfit cup demonstrated excellent clinical outcomes at mid-term follow-up;however,future studies are needed to assess the long-term outcomes of this acetabular implant.

Acetabular cup size trends in total hip arthroplasty

BACKGROUND Total hip arthroplasty(THA)is a common procedure for end stage osteoarthritis.The learning curve for THA is complex and challenging.One of the most difficult skills to master is acetabular reaming.We wish to identify if experience in arthroplasty leads to preservation of more bone stock.AIM To investigate if increasing surgeon experience will predict an ever decreasing acetabular cup size.METHODS A retrospective case series of four attending orthopaedic surgeons was completed.All uncemented elective total hip arthroplasties since appointment were selected for inclusion.The size of acetabular cup used was noted and logistic regression was used to identify if a trend to smaller cups existed.RESULTS A total of 1614 subjects were included with a mean age of 64 years.Overall cups were on average 0.18mm smaller per year(95%confidence interval-0.25 to-0.11,P<0.001).Individual surgeon trends showed cup sizes to decrease 0.27 mm/year for surgeon A,0.02 mm/year for surgeon B,0.15 mm/year for surgeon C and 0.29 mm/year for surgeon D.Three of the four surgeons had a more pronounced trend to smaller cups for male subjects than their female counterparts.CONCLUSION We found increasing surgeon experience to be associated with an ever-decreasing acetabular cup size.Smaller acetabular cup size may act as a surrogate marker of surgical proficiency by virtue of decreased acetabular reaming.

Study of plasma parameters of coaxial plasma source using triple Langmuir probe and Faraday cup diagnostics

Coaxial plasma guns are a type of plasma source that produces plasma which propagates radially and axially controlled by the shape of the ground electrode, which has attracted much interest in several applications. In this work, a 120° opening angle of CPG nozzle is used as a plasma gun configuration that operates at the energy of 150 J. The ionization of polyethylene insulator between the electrodes of the gun produces a cloud of hydrogen and carbon plasma.The triple Langmuir probe and Faraday cup are used to measure plasma density and plasma temperature. These methods are used to measure the on-axis and off-axis plasma divergence of the coaxial plasma gun. The peak values of ion densities measured at a distance of 25 mm on-axis from the plasma gun are(1.6±0.5)×10^(19)m^(-3)and(2.8±0.6)×10^(19)m^(-3)for hydrogen and carbon plasma respectively and the peak temperature is 3.02±0.5 eV. The mean propagation velocity of plasma is calculated using the transit times of plasma at different distances from the plasma gun and is found to be 4.54±0.25 cm/μs and 1.81±0.18 cm/μs for hydrogen and carbon plasma respectively. The Debye radius is obtained from the measured experimental data that satisfies the thin sheath approximation. The shot-to-shot stability of plasma parameters facilitates the use of plasma guns in laboratory experiments. These types of plasma sources can be used in many applications like plasma opening switches, plasma devices, and as plasma sources.

The European Cup Has Limited Effect to “Save” Europe

On June 15th,the one-month European Football Championship(hereinafter referred to as the European Cup)kicked off in Germany.In 2023,Germany’s GDP shrank by 0.3%,which was the worst performance among the world’s major economies.This year,Germany is pinning its hopes on the European Championship to stimulate consumption and boost the economy.

Refined Anam-Net:Lightweight Deep Learning Model for Improved Segmentation Performance of Optic Cup and Disc for Glaucoma Diagnosis

In this work,we aim to introduce some modifications to the Anam-Net deep neural network(DNN)model for segmenting optic cup(OC)and optic disc(OD)in retinal fundus images to estimate the cup-to-disc ratio(CDR).The CDR is a reliable measure for the early diagnosis of Glaucoma.In this study,we developed a lightweight DNN model for OC and OD segmentation in retinal fundus images.Our DNN model is based on modifications to Anam-Net,incorporating an anamorphic depth embedding block.To reduce computational complexity,we employ a fixed filter size for all convolution layers in the encoder and decoder stages as the network deepens.This modification significantly reduces the number of trainable parameters,making the model lightweight and suitable for resource-constrained applications.We evaluate the performance of the developed model using two publicly available retinal image databases,namely RIM-ONE and Drishti-GS.The results demonstrate promising OC segmentation performance across most standard evaluation metrics while achieving analogous results for OD segmentation.We used two retinal fundus image databases named RIM-ONE and Drishti-GS that contained 159 images and 101 retinal images,respectively.For OD segmentation using the RIM-ONE we obtain an f1-score(F1),Jaccard coefficient(JC),and overlapping error(OE)of 0.950,0.9219,and 0.0781,respectively.Similarly,for OC segmentation using the same databases,we achieve scores of 0.8481(F1),0.7428(JC),and 0.2572(OE).Based on these experimental results and the significantly lower number of trainable parameters,we conclude that the developed model is highly suitable for the early diagnosis of glaucoma by accurately estimating the CDR.

Enhancing the Decomposition of Paper Cups Using Galleria Mellonella and Eisenia Fetida

The composition of paper cups creates a challenge for the recycling industry,as the paperboard–plastic film composite is hard to separate.Therefore,paper cups are sent to landfills or waste incinerators.This study explores the combined use of red worms(Eisenia fetida)and Greater wax moth(Galleria mellonella)in the biodegradation of paper cups.The study investigates the conditions and combinations that promote using Eisenia fetida and Galleria mellonella for degrading paper cups.The study considered the influence of environmental temperature,the presence of food waste,varying the number of Eisenia fetida worms,and the presence of a Galleria mellonella growth-slowing agent on the degradation process.To achieve the study objectives,the study followed a quantitative approach.The study monitored the degradation of paper cup cuts that were placed in jars containing different combinations of Eisenia fetida worms,Galleria mellonella larvae,food waste,bedding material,and Galleria mellonella growth-slowing agents.The study found that the best operating temperature is 30oC.The study found that using food waste improves the performance of Eisenia fetida worms and Galleria mellonella larvae significantly.The study found that adding a Galleria mellonella growth-slowing agent slightly enhances the degradation of the paper cup.Finally,a numerical model was obtained to simulate the paper cup degradation efficiency.

A meta-analysis on the clinical efficacy of fire dragon cupping in the treatment of lumbar disc herniation

Background:The incidence of lumbar disc herniation(LDH)is notably high.Consensus among experts highlights non-surgical treatments as the primary therapeutic approach for LDH.Contemporary medicine frequently employs pharmacotherapy and epidural injections in such treatments,which are associated with numerous adverse effects.Prolonged use can severely impair the liver and kidney functions of patients.Hence,the role of safe and effective traditional Chinese medicine techniques becomes pivotal.Among various traditional Chinese medicine approaches for treating LDH,fire dragon cupping,renowned for its remarkable efficacy,cost-effectiveness,and ease of application,is extensively utilised in clinical settings for managing LDH.Nonetheless,there is a scarcity of systematic and standardised evidence from evidence-based medicine studies.Therefore,conducting a meta-analysis is imperative.Methods:A comprehensive computerised search was conducted in databases including China National Knowledge Infrastructure,WanFang Data,VIP,China Biology Medicine disc,PubMed,EMbase,The Cochrane Library,Web of Science,and CINAHL.The search aimed to gather randomised controlled trials on fire dragon cupping therapy for LDH,spanning from the inception of these databases until December 2023.Two researchers independently screened the literature according to inclusion and exclusion criteria,extracted data,and assessed the methodological quality of the studies included,utilising RevMan 5.3 software for meta-analysis.Results:The results show that the fire dragon cupping therapy group had better clinical effectiveness(relative risk=1.23,95%confidence interval(CI)(1.14,1.33),P<0.00001),less pain(standardized mean difference=–1.33,95%CI(–1.49,–1.16),P<0.00001),and some improvement in lumbar function(Japanese Orthopaedic Association scores:mean difference=3.37,95%CI(2.31,4.43),P<0.00001.Conclusion:The fire dragon cupping therapy significantly alleviates LDH,warranting its extensive application.However,considering the limitations in the number and quality of studies included,the aforementioned conclusion necessitates further validation through more high-quality research.

Subconjunctival hemorrhage after wet cupping therapy: a case report

Introduction:Cupping therapy is an integrative and complementary medicine therapy that practiced worldwide by several civilizations for thousands of years.Cupping therapy is reported to be a relatively safe practice especially if performed by qualified therapists.Subconjunctival hemorrhage(SCH)is a common cause of eye redness and can be classified into traumatic and spontaneous.Case presentation:This case report discussed an adverse event related to wet cupping therapy.The patient developed SCH one day after performing cupping therapy.He was completely recovered after 2 weeks.This case report should increase the knowledge of cupping therapists regarding increasing safety of patient when performing wet cupping therapy on specific body parts especially,head,neck and cervical areas.Furthermore,it highlighted the importance of conducting research regarding the mechanical and physiological effects of cupping therapy.Conclusion:Adverse events related to cupping therapy should be reported with every patient.Cupping therapists should be aware of this possible mild adverse event.To the best of our knowledge,this is the first published adult case of SCH related to wet cupping therapy session.More studies are critically needed for evaluation of cupping therapy effects and adverse events especially when performed on head and neck.

Observation on Therapeutic Effect of Lotus Needle Cupping Therapy for Removing Blood Stasis in Zhuang Medicine on PHN and Its Influ-ence on Inflammatory Mediators

[Objectives]To observe the clinical effect of the lotus needle cupping therapy for removing blood stasis in Zhuang medicine in treating PHNand its influence on inflammatory factors.[Methods]96 patients with PHN were randomly divided into three groups:lotus nee-dle cupping therapy group,TCM surrounding acupuncture group and gabapentin group.Venous blood and acupoint blood were collected at 0,21 and 42 d of treatment,and the expression levels of 5-HT,SP and CGRPinflammatory mediators were detected before and after treatment.The changes of VAS scores before,during and after treatment and the clinical efficacy were observed.[Results]The total effective rate of the lotus needle cupping group was 87.50%,which was better than that of the TCM acupuncture group(81.25%)and the gabapentin group(62.50%);after treatment,the VAS scores and the expression of inflammatory mediators in the three groups of patients were lower than those before treatment,and the decrease was more significant in the treatment group(P<0.05).[Conclusions]The lotus needle cupping therapy for removing blood stasis in Zhuang medicine is effective in treating PHN,and its mechanism is to reduce the release of inflammatory media-tors,reduce hyperalgesia,relieve pain and improve the quality of life of patients.

自动引线系统中旋转偏心检测与补偿方法

在空心杯转子线圈的自动引线微操作系统中,线圈的几何中心很难与旋转台的回转中心重合,因此在旋转过程中产生偏心现象,进而导致线圈引线失败。为此,提出了一种检测和补偿线圈偏差的方法。从分析线圈偏心源出发,建立偏心数学模型,设计了一种偏心模型与图像特征提取算法结合的偏差测量方法,并提出基于自动控制与补偿模型的校正方法。通过实验验证了模型的精确性以及偏心补偿的有效性,基于均方根误差的评价,模型对于偏差预测以及特征提取算法均具有较高的精度,补偿后的最大残余误差小于4μm,平均补偿幅度约为98.6%,引线实验展示了所提方法的优良性能。提出的偏心检测补偿方法具有精度高、复杂度低、效率高、实时性,以及嵌入式等优点,且在微操作以及微装配领域具有更合适、更广泛的应用。

腕踝针联合火龙罐对类风湿性关节炎患者急性疼痛的改善效果分析

目的观察腕踝针联合火龙罐对类风湿性关节炎(RA)患者急性疼痛的改善效果。方法选取2022年6月至2023年5月收治的80例RA患者为研究对象,按照随机数字表法分为观察组(40例)、对照组(40例)。对照组予甲氨蝶呤片口服治疗,观察组在对照组基础上加用腕踝针联合火龙罐治疗。2组均治疗3 d后统计疗效,比较2组治疗前及治疗1、2、3 d后临床症状28个关节疾病活动度-血沉评分系统(DAS28-ESR)评分、疼痛程度视觉模拟评分法(VAS)评分变化情况,比较2组治疗前及治疗3 d后血清五羟色胺(5-HT)、C反应蛋白(CRP)、白细胞介素6(IL-6)水平变化情况。结果2组治疗1、2、3 d后临床症状DAS28-ESR评分均较治疗前下降(P<0.05),且观察组治疗后同期下降更明显(P<0.05)。2组治疗1、2、3 d后疼痛VAS均较治疗前下降(P<0.05),且观察组治疗后同期下降更明显(P<0.05)。2组治疗3 d后血清5-HT、IL-6、CRP水平均较治疗前降低(P<0.05),且观察组治疗3 d后下降水平更明显(P<0.05)。观察组总有效率90.00%(36/40),对照组总有效率67.50%(27/40),治疗组总有效率高于对照组(P<0.05)。结论腕踝针联合火龙罐治疗RA临床效果显著,可明显改善患者急性疼痛,控制病情。

基于定模同步顶出技术汽车杯托底座的注塑模具设计

根据汽车杯托底座产品的结构形状与技术要求,设计了两点针阀式热流道进胶的注塑模具。在模具的动模侧设计了多组滑块脱模机构,且为防止产品侧面的加强筋被滑块拉伤,在滑块内部设计了两处顶针。在定模侧设计了两个大斜顶的分型顶出机构,通过两组定距拉钩在模具开模时,实现定模斜顶的同步顶出,解决产品定模侧倒扣特征的脱模问题;通过“斜顶块+直顶块+顶针”组成的脱模系统顶出产品。在定模侧设计了“直通式+隔水片式+喷泉式”的水路,动模侧设计了“直通式随形”水路,组成模具的温度调节系统。经实践生产后,汽车杯托底座产品表面无缺陷,各尺寸符合要求,说明该模具结构合理。本文为相关产品的模具开发提供了有价值的技术参考。

砭石罐灸联合八部金刚功对炎症性肠病脾肾阳虚证患者疗效、疲劳及生活质量的影响

目的:探讨砭石罐灸联合八部金刚功对炎症性肠病脾肾阳虚证患者疗效、疲劳及生活质量的影响。方法:将104例炎症性肠病脾肾阳虚证患者随机分为观察组和对照组,每组52例。对照组采用基础治疗及护理,观察组在对照组基础上实施砭石罐灸联合八部金刚功,治疗12周。比较两组患者治疗前后中医症状评分、炎症因子、多维疲劳量表(MFI-20)、炎症性肠病患者生活质量问卷(IBDQ)变化及治疗后的总有效率。结果:共101例患者完成研究,观察组50例,对照组51例,治疗后观察组患者中医症状评分、MFI-20评分、炎症因子水平均低于对照组,差异有统计学意义(P<0.05);治疗后观察组患者IBDQ评分高于对照组,差异有统计学意义(P<0.05);治疗后观察组患者总有效率为94.00%(47/50)优于对照组的82.35%(42/51)(P<0.05)。结论:砭石罐灸联合八部金刚功可改善炎症性肠病脾肾阳虚证患者临床症状,降低炎症因子水平,缓解疲劳,提高生活质量。

温针灸联合刺络拔罐治疗轻型COVID-19感染的临床观察

目的观察温针灸联合刺络拔罐治疗轻型新型冠状病毒(corona virus disease 2019,COVID-19)感染患者的临床疗效。方法将82例COVID-19轻型患者随机分为治疗组和对照组,每组41例。对照组予连花清瘟颗粒口服,治疗组在对照组基础上给予温针灸联合刺络拔罐治疗。比较两组退热时间,两组治疗前后咳嗽视觉模拟量表(visual analog scale,VAS)、中文版莱塞斯特咳嗽生命质量问卷(Mandarin Chinese version of the Leicester cough questionnaire,LCQ-MC)、咽干/痛缓解程度,并比较两组安全性情况,追踪观察两组患者是否出现“长新冠综合征”和COVID-19二次感染情况。结果两组退热时间比较差异有统计学意义(P<0.05)。两组治疗后咳嗽VAS评分低于治疗前,且治疗组低于对照组,差异有统计学意义(P<0.05)。两组治疗后LCQ-MC评分低于治疗前,且治疗组低于对照组,差异有统计学意义(P<0.05)。两组治疗后咽干/痛程度分布优于治疗前,且治疗组优于对照组,差异有统计学意义(P<0.05)。两组“长新冠综合征”发生率比较差异无统计学意义(P>0.05)。两组COVID-19二次感染率比较差异无统计学意义(P>0.05)。两组疗法安全性均可。结论在口服中成药的基础上,温针灸联合刺络拔罐治疗COVID-19轻型患者在急性期临床疗效显著,安全性高。

GRINDING FORCE IN PRECISION MACHINING OF WC-Co COATING BY CUP WHEEL

High machining precision and machining efficiency can be obtained in grinding WC-Co coating by cup wheel. The conventional model of the grinding force is not suitable for the grinding of the cup wheel due to the difference in grinding style between the cup wheel and the conventional external wheel. So the grit grinding process of the cup wheel is studied, and a new concept of the effective grinding width of the cup wheel is presented. Then the grinding force in grinding WC-Co coating materials by cup wheel is analyzed and a theoretical formula is deduced. Finally, experimental results of the grinding force verify the correctness and the precision of the theoretical formula.

舒神汤联合穴位拔罐治疗慢性顽固性失眠50例

目的观察舒神汤联合神门、三阴交穴位拔罐治疗慢性顽固性失眠的临床效果。方法选择100例病程6个月以上的慢性顽固性失眠患者。双盲随机分成治疗组与对照组。对照组行常规治疗,采用安眠类西药;治疗组应用舒神汤,联合神门、三阴交穴位拔罐。两组治疗4周,观察治疗效果。结果治疗组治愈率64.0%(32/50)高于对照组的8.0%(4/50),总有效率100.0%(50/50)高于对照组的66.0%(33/50),差异均有统计学意义(P<0.05)。治疗后,治疗组汉密尔顿焦虑量表(HAMA)和汉密尔顿抑郁量表(HAMD)评分较治疗前明显降低,且治疗组低于对照组,差异有统计学意义(P<0.05);治疗组匹兹堡睡眠质量指数(PSQI)评分较治疗前明显降低,且治疗组低于对照组,差异有统计学意义(P<0.05);治疗组健康状况调查问卷(SF-36)评分较治疗前明显升高,差异有统计学意义(P<0.05),且治疗组高于对照组,差异有统计学意义(P<0.05)。对照组不良反应总发生率为46.0%(23/50),高于治疗组的2.0%(1/50),差异有统计学意义(P<0.05)。结论舒神汤联合神门、三阴交穴位拔罐治疗慢性顽固性失眠安全性高、有显著效果。

基于CUPS的网络打印审计技术研究

随着信息技术的发展,类Unix操作系统的使用越来越广泛。针对目前没有支持多操作系统的打印审计系统的现状,本文提出了一种基于CUPS的打印审计技术。本技术从网络传输层入手,通过CUPS实现了打印数据的拦截,并在此基础实现了身份认证、张数限制等打印审计功能。实验结果表明本技术可以在用户不安装附加软件和驱动的前提下实现支持多操作系统的打印审计过程,具有较高的实用价值。

LALR(1)解析器的再工程:YACC和CUP剖析

现有的前端分析多数是通过编写相应的可能含有二义的LALR(1)文法规范,利用YACC或其变种自动生成的。在这些解析器的Java再工程中,可以用CUP去替代YACC,这样再工程的焦点转移到对文法规范的变换。由于YACC及CUP在二义的解决、解析器的构造等有细微的差别,因此对复杂的文法规范的变换并不是一件容易的事。该文通过剖析YACC和CUP,指出了它们的不同之处,并总结出有二义的YACC文法到CUP文法变换的基本原则和几个变换法则。