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ANALYSIS OF COEXISTENCE OF TWO KINDS OF MACRO-DEFECTS IN cup-cup AXISYMMETRIC COMBINED EXTRUSION

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Chinese Journal of Aeronautics 1990年第1期5卷 58-66页

作者： Li Miaoquan and Wu Shichun Northwestern Polytechnical University Northwestern Polytechnical Univ

In this paper, the relationships between the region of the two coexisting kinds of macro-defects and the reduction in area, as well as between the region and the relative residual thickness of the billet are studied for the cup-cup axisymmetric combined extrusion, on the basis of the analytical expression obtained by the upper-bound approach. The presented model and conclusions are confirmed by the experimental results in this paper.

关键词： cup ANALYSIS OF COEXISTENCE OF TWO KINDS OF MACRO-DEFECTS IN cup-cup AXISYMMETRIC COMBINED EXTRUSION

维普期刊数据库

Acetabular cup size trends in total hip arthroplasty

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World Journal of Orthopedics 2024年第1期15卷 39-44页

作者： Daniel Patrick McKenna Alex Price Timothy McAleese Darren Dahly Paul McKenna May Cleary Department of Trauma and Orthopaedics University Hospital WaterfordWaterford X91 ER8EIreland Department of Epidemiology and Public Health University College CorkCork T12 XF62Ireland

BACKGROUND Total hip arthroplasty(THA)is a common procedure for end stage *** learning curve for THA is complex and *** of the most difficult skills to master is acetabular *** wish to identify if experience in arthroplasty leads to preservation of more bone *** To investigate if increasing surgeon experience will predict an ever decreasing acetabular cup *** A retrospective case series of four attending orthopaedic surgeons was *** uncemented elective total hip arthroplasties since appointment were selected for *** size of acetabular cup used was noted and logistic regression was used to identify if a trend to smaller cups *** A total of 1614 subjects were included with a mean age of 64 *** cups were on average 0.18mm smaller per year(95%confidence interval-0.25 to-0.11,Pcup 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 *** of the four surgeons had a more pronounced trend to smaller cups for male subjects than their female *** We found increasing surgeon experience to be associated with an ever-decreasing acetabular cup *** acetabular cup size may act as a surrogate marker of surgical proficiency by virtue of decreased acetabular reaming.

关键词： Hip Arthroplasty Acetabulum cup Learning

Design of packing cup interference fit value of hypercompressors for low density polyethylene production

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Frontiers in Energy 2019年第1期13卷 107-113页

作者： Da LEI Xuehong LI Yun LI Xiwen REN School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'an 710049China Shenyang Yuanda Compressor Co. Ltd.Shenyang 110027China

The hypercompressor is one of the core facilities in low density polyethylene production,with a discharge pressure of approximately 300 MPa.A packing cup is the basic unit of cylinder packing,assembled by the interference fit between an inner cup and an outer *** the shrink-fitting prestresses the packing cup,serious design is needed to gain a favorable stress state,for example,a tri-axial compressive stress *** traditional method of designing the interference fit value for packing cups depends on the shrink-fit theory for thickwalled cylinder subject to internal and external *** to the traditional method,critical points are at the inner radii of the inner and external *** this study,the finite element method(FEM)has been implementcd to determine a more accurate stress level of packing *** critical points have been found at the edge of lapped sealing surfaces between two adjacent packing *** maximum Von Mises equivalent stress in a packing cup increases after a decline with the rise of the interference fit *** maximum equivalent stress initially occurs at the bore of the inner cup,then at the edge of lapped mating surfaces,and finally at the bore of the outer cup,as the interference radius *** traditional method neglects the influence of axial preloading on the interference mating *** a result,it predicts a lower equivalent stress at the bore of the external cup.A higher interference fit value accepted by the traditional method may not be feasible as it might already make packing cups yield at the edge of mating surfaces or the bore of the external *** with fatigue analysis,the feasible range of interference fit value has been modified by utilizing *** modified range tends to be narrower and safer than the one derived from the traditional method,after getting rid of shrink-fit values that could result in yielding in a real packing cup.

关键词： interference fit value packing cup hypercompressor finite element method(FEM)

LALR(1)解析器的再工程:YACC和cup剖析

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计算机工程 2005年第15期31卷 50-52页

作者：张昱张磊中国科学技术大学计算机科学技术系合肥230027

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... 详细信息

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。

关键词： LALR(1) 解析器 YACC cup 二义性冲突

维普期刊数据库

Optimum Combination of Femoral Head Size, Femoral Head Material, and Acetabular cup Liner’s Highly-Cross-Linked Polyethylene Brand for Hip Implant

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Journal of Biomedical Science and Engineering 2015年第1期8卷 31-39页

作者： Gladius Lewis Daniel M. Werdofa Department of Mechanical Engineering The University of Memphis Memphis USA

Clinical two-dimensional linear wear rate data for acetabular cup liners fabricated using approved brands of highly cross-linked ultra-high-molecular-weight polyethylene, as reported in 39 articles in the literature, were analyzed using a statistical technique called response surface methodology. The output was a series comprising16 acceptable combinations of femoral head diameter (HD), femoral head material (HM), and HXLPE brand (PB), each of which would yield the optimum wear rate (herein taken to be a wear rate of practically zero). An example of such a combination is 28- mm-diameter Oxinium? femoral head articulated against an acetabular cup liner fabricated from ReflectionTM HXLPE. The findings in this work may guide an orthopaedic surgeon’s selection of the combination of HD, HM, and PB to use in a primary total hip joint replacement.

关键词： Highly-Cross-Linked Ultra-High Molecular-Weight Polyethylene Acetabular cup Liner Linear Wear

Congenital Depressed Skull Fracture Lifting with Suction cup: A Therapeutic Alternative to Surgery

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Open Journal of Modern Neurosurgery 2019年第2期9卷 115-122页

作者： André Tokpa Louis Derou Konan Serge Yao Oka Dominique N’dri Department of Neurosurgery Teaching Hospital of Bouaké Bouaké Cote d’Ivoire Department of Neurosurgery Teaching Hospital of Yopougon Abidjan Cote d’Ivoire

Congenital skull fractures of newborn are rare and create medico-legal problems. Their management is controversial. Between surgery considered too aggressive and uncertain conservative attitude, reduction by suction cup or breast pump is an alternative. The authors report their experience through a case of successful resolution of a congenital depressed skull fracture using a suction cup in a newborn at 13 day of life followed by a literature review. This technique avoids the usual complications of surgery and reduces the anxiety of parents related to surgery. It also avoids the anxiety of having a newborn with a recessed skull and a conservative attitude with uncertain outcome.

关键词： Congenital Skull Fracture Depressed Skull Fracture Suction cup

Effect of Ciprofloxacin on *** and *** Growth in Presence of Vitamin C Using cup Cut Diffusion Method

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Journal of Pharmacy and Pharmacology 2019年第8期7卷 473-484页

作者： Suhera M. Aburawi Bassma M. Doro Ebtisam A. Awad Department of Pharmacology and Clinical Pharmacy Faculty of PharmacyUniversity of Tripoli. TripoliLibya Department of Microbiology and Immunology Faculty of PharmacyUniversity of TripoliTripoliLibya

Ciprofloxacin is a second-generation of fluoroquinolone,broad-spectrum antibiotic with bactericidal activity against Gram-positive and Gram-negative *** is one of the most widely used antibiotics,because of its efficacy,safety,and relatively low *** acid(vitamin C)is water-soluble monosaccharide antioxidant;it is essentially required by the body for its various biochemical and physiological *** is Gram-positive cocci;widely distributed in the environment,it is a member of the normal flora of the *** is not always pathogenic;it is a common cause of skin infections including abscesses,respiratory infections such as sinusitis,and food *** is Gram-negative bacteria,found in the environment,foods,and *** *** strains are harmless;it is part of the normal microbiota of the ***,some serotypes of *** cause serious food poisoning in their hosts;it can cause diarrhea,while others cause urinary tract infections,respiratory illness and pneumonia,and other ***:cup cut diffusion method was *** I:is carried out to choose the concentration of vitamin C to be used in experiment *** negative control is normal saline,added in cup in each plate,vitamin C(100 mg/mL,200 mg/mL,400 mg/mL)was added,the volume in each cup was 100μ*** II:Eight groups of treatments were *** first is the negative control(1%normal saline),the second group is the positive control of vitamin C(200 mg/mL).The third,fourth and fifth groups are ciprofloxacin with different concentrations(10 mg/mL,20 mg/mL,40 mg/mL);the sixth,seventh and eighth are the combination of vitamin C with each concentration of ciprofloxacin(10 mg/mL,20 mg/mL,40 mg/mL).Each group includes six petri *** plates were incubated at 37 oC for 24 h and 48 *** of inhibition is measured in *** and conclusion:Ciprofloxacin produces dose dependent increase in zone of inhibition of *** and *** gr

关键词： Ciprofloxacin vitamin C S.aureus E.coli cup cut diffusion method

A late dissociation of the ceramic component of a sandwich liner cup in a total hip arthroplasty<br>—Case report and review of the literature

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Case Reports in Clinical Medicine 2013年第2期2卷 138-140页

作者： Pieter-Jan De Roo Franky Steenbrugge Martijn Raaijmaakers Department of Orthopaedic Surgery & Traumatology Aalst Belgium

We present a case of a 71-year-old woman with unexplained instability of her total hip arthroplasty 12 years after implantation due to loosening of the ceramic component of a sandwich ceramic in polyethylene liner. She experienced in total 2 dislocations in 6 months. These events occurred without fracture of the ceramic liner. Sandwich ceramic liners were introduced with the idea of combining the benefits of ceramic and polyethylene bearings in total hip arthroplasty in order to reduce wear and to allow a ceramic on ceramic bearing to be used in a cup designed for polyethylene inserts only. Although some reports showed promising early results, case reports and later on retrospective analysis showed high fracture rates of the ceramic liner component. We believe that loosening of the ceramic component may precede fracture of the liner and that a ceramic on ceramic configuration is preferable.

关键词： Total Hip Arthroplasty Sandwich cup Complication Hip Instability cup Revision

THE WORLD cup IN MY HEART

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作文大王(中高年级) 2002年第22期 37-38页

作者：何珊湖北省黄梅县第一中学

44 years!That’S such a long timefor Chinese. But, in 2002, we rushedinto the final circle in Korea JapanWorld cup. We all hoped the Chinese team could surprise the worlk,just as Senegal won France. On June 4th,during the two hours before the match which beganat 2:30p.m,I couldn’t sleep.I was thinking of the first match forChina in Team C all the *** had to win it because it’s ***,the first class was *** classmates were so

关键词： cup THE WORLD cup IN MY HEART