登录

双语推荐：磨片

进入期刊文章
盘磨机是目前广泛使用的磨浆和打浆设备,磨盘(或磨片)是盘磨机的核心部件,虽然盘磨机磨浆(或打浆)技术已经比较成熟,但仍存在着功耗大、磨片使用寿命较短等问题。盘磨机的功耗、打浆质量、磨片使用寿命等均与磨片设计有密切关系。本文从盘磨机的功率消耗的计算、磨浆或打浆机理研究、磨片齿形设计理论和方法、磨片的材料选择与使用寿命四个方面介绍了盘磨机磨片设计理论与方法的研究进展与应用现状,并且进行了分析与展望。本文的工作对于盘磨机设计、研究、应用和性能改善等具有重要的意义。
Disc refiners are used in refining and beating widely, the plate is a key unit of a disc refiner. Although refining and beating technology is relatively mature now, there are still some problems such as great energy consumption of disc refiners and the short service lives of the plates, the design of disc refiner plate is intimate with energy consumption and refining or beating quality. the main purpose of the paper consists in introducing the progress of study on the design theory and method on disc refiner plate from four aspects： energy consumption equations, the research on refining or beating theories, the design theory and method of plate teeth, material selection and its service life, and prospects has been also discussed in the paper, the work of the paper is significant to the design and study of disc refiner, as well as the application and performance improvement of disc refiner.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
对两种磨片的齿形、生产运行参数、纤维质量、生产成本等方面比较分析,综合考虑其使用价值,选出更为经济适用的磨片。
The tooth form of the two refiner discs, operating parameters, fiber quality, production costs, and other aspects were analyzed, based on the overall value, the more affordable refiner disc was chosen.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
介绍了盘磨机磨盘与磨片的安装，引起盘磨机振动的原因和解决方法，并对设计生产磨片的减振进行简单介绍，本文的研究对指导盘磨机设计和使用具有一定意义。
This paper introduces the reifner plate installation, the cause of disc reifner vibration damping measures and solutions, to design and production of the disc was introduced in this paper, the research has certain signiifcance to guide the reifner plate installation.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
介绍一种用于盘磨机的磨片及其制造方法。磨齿按照一定规律排布,所有磨齿和齿槽在同一个制造单元内长度相等,这种结构既利于流浆又便于制造。磨盘由磨盘基体和磨齿两部分构成,磨齿加工完毕之后,利用低熔点合金固定。磨齿可通过熔融重新用于新磨片的二次成型,从而减少材料浪费。
The structure and manufacturing of a novel disc refiner plate was introduced. Bars are arranged in a given rule, all bars and grooves are with the same length in a manufacturing cell, which is beneficial to material flowing and plate manufacturing. A plate is composed of two parts, basic plate and bars. After the completion of processing, bars are fixed by low melting point alloy. Unworn bars still can be used for new segment with post forming, which causes reduction of material losses.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
根据等角螺线数学性质,提出了一种盘磨机磨片的结构设计。该结构利用了浆料在磨区内运动轨迹为螺旋线的规律,提供了稳定的磨纹倾角和磨齿交角,理论上可使浆流更顺畅,减小磨盘振动,节约能耗,并且保证成浆质量的稳定性。
According to the mathematical properties of the logarithmic spiral, a novel structure design of disc refiner plate was introduced. The material to be refined moved in the refining zone proceed with a logarithmic spiral regularity, which was exploited by this structure. Stable bar inclination angle and bar crossing angle was still provided. Theoretically, the particular plate was beneifcial to material lfowing, disk vibration reducing and energy saving, to guarantee the stability of pulp quality.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
目的建立支抗种植钉的动物模型,分析不同愈合期加载对种植钉稳定性的影响。方法于绵羊牙槽骨上植入微型支抗种植钉,建立颌骨—支抗种植钉的动物模型,随机分为4组(不加力为A组,即刻加力为B组,植入2周加力为C组,植入4周加力为D组),截取带有种植钉的上、下颌骨组织标本;上颌骨块制作不脱钙的骨磨片,光镜下观察种植钉与骨组织界面的愈合情况,下颌骨块用材料性能试验机检测种植钉与骨组织松脱瞬间的最大剪切力值,并进行统计分析。结果 1)4组种植钉的剪切力值总体上有差别,A、B组的剪切力低于C、D组。2)骨纵磨片显示:种植钉与周围组织界面的结合方式在种植钉的压力侧和张力侧无明显区别;横断磨片显示:4组界面既有纤维性结合,又有骨性结合,A、D组界面以骨性结合为主,B、C组界面以纤维性结合为主,C组种植钉周围可见新生的骨组织潜行生长。结论加载时机对支抗种植钉的稳定性有一定的影响。
Objective This study aimed to evaluate the influence of loading in different healing periods on implant stabi-lity and to establish an animal model of anchorage implant screws. Methods Anchorage implant screws were implanted in sheep alveolar bone to establish the implant screw animal model. The animals were randomly divided into four groups: group A, sheep without loading; group B, sheep loaded immediately after implant; group C, sheep loaded after two weeks; and group D, sheep loaded after four weeks. The maxillary and mandibular tissue specimens with implants were dissected. The maxillary tissue specimens were used to make undecalcified bone grinding slices, and the healing mode of the implant-bone interface was observed by light microscope. The maximum shear strength of loose mandibular specimens was measured by a material testing machine. The differences in group data were statistically analyzed. Results 1) A general difference in shear strength exists among the four groups. The s

[ 可能符合您检索需要的词汇 ]

进入期刊文章
采用氧化铝磨料对钛酸钡(BaTiO3)陶瓷基片进行双面研磨加工，分析磨料粒径、研磨压力、研磨盘转速、磨料浓度以及研磨液流量等研磨工艺参数对基片表面粗糙度和材料去除率的影响。采用双面研磨工艺，依次用W14、W7、W5的氧化铝磨料对钛酸钡陶瓷基片(原始粗糙度Ra 0.219μm)在研磨压力3.26 kPa、研磨盘转速为37 r/min、磨料质量浓度为9%、研磨液流量10 mL/min的研磨参数下，进行粗研、半精研、精研，取得了表面粗糙度Ra0.0766μm的研磨片。对研磨片继续用W0.2 SiO2抛光可获得表面粗糙度Ra为6 nm的超光滑表面。同时，用激光共聚焦显微镜和扫描电镜观察了不同加工阶段的基片表面形貌，并分析了材料去除机理；采用氧化铝磨料的研磨过程中，材料以脆性断裂去除为主；采用SiO2磨料抛光过程中，工件材料以塑性去除为主。
BaTiO3 ceramic substrate was machined by double-sided lapping,and the influence of process parameters on the surface roughness (Ra) and material removal rate (MRR) were studied.Al2 O3 , whose particle size were W14,W7 and W5,were used to grind,pre-lap and lap BaTiO3 substrate at pressure of 3.26 kPa and rotation speed 37 r/min by double side lapping.The concentration of abrasive was 9% and grinding fluid flow was 10 mL/min.The substrate was ground from Ra 0.219μm to Ra 0.076 6μm.If ground with W0.2 SiO2 ,there would be an ultra-smooth surface of Ra 6 nm.The topography of the machined substrate surface was observed by laser confocal microscopy and SEM.The material removal mechanism was discussed.It was found that the fragile mode played a dominant role in the lapping process,while plastic removal mode played a dominant role in the polishing process.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
目的观察重组结核杆菌热休克蛋白10(CPN10)对成骨细胞(OB)-外周血单个核细胞(PBMs)共培养体系中破骨细胞生成及相关基因表达的影响。方法建立培养上清相通但二者互相不接触的成骨细胞一单个核细胞共育模型。实验分对照组和CPN10(10μg/ml)处理组。主要观察指标:1采用TRAP染色及扫描电镜检测破骨细胞生成及小牛骨磨片吸收陷窝,2应用Realtime PCR检测与破骨细胞生成相关基因NFATc1、c-Fos、RANKL、OPG的基因表达。结果两组细胞均有TRAP阳性多核破骨细胞生成,并在小牛骨磨片上形成吸收陷窝;但对照组所获TRAP阳性多核细胞数目、吸收陷窝数目及面积均显著小于CPN10组。Realtime PCR检测结果显示CPN10组与对照组相比NFATc1、c-Fos、RANKL、OPG相对浓度分别为33.4798±2.0929、47.974±5.1628、47.0861±2.2033、7.4642±0.6791(P0.05),对照组各基因表达均显著低于CPN10组。结论 CPN10在成骨细胞-单个核细胞(OB-PBMs)共培养体系中可促进OC的生成及骨吸收,CPN10通过对成骨细胞的作用,致其分泌的OPG/RANKL比例失调,并上调破骨细胞相关基因NFATc1、c-Fos、RANKL、OPG的基因表达。
Objective To study the influence of the recombinant mycobacterium tuberculosis heat shock protein 10 (CPN10) on osteoclastogenesis, bone resorption and the expression of osteoclast-associated genes in an osteoblast (OB) -Peripheral Blood Monocytes (PBMs) co-culture system. Methods The osteoblast-monocyte co-culture system was estab-lished by developing the supernatant interaction system which could disable the contact of supernatants. The cells was co-cultureed with M-CSF (30 ng/ml). CPN10 (10μg/ml) were added to form the CPN10 group, and the system without CPN10 was the control group. The primary parameters observed in this study were: ①morphology and growth of the osteo-clasts; ②Osteoclastogenesis examined by TRAP staining and their resorption lacunaes observed by scanning elec-tron microscope(SEM);③Osteoclast formation related genes expression such as NFATc1, c-Fos, RANKL and OPG detected by Real-time PCR. Results TRAP positive multinuclear cells and bone resorption la

[ 可能符合您检索需要的词汇 ]

进入期刊文章
目的研究唑来膦酸钠(ZOL)对钛颗粒诱导的骨溶解的影响。方法分离6~8周C57BL/6J小鼠长骨中的前体破骨细胞(OCP)并分为6组,A组:OCP+细胞培养液,B组:OCP+巨噬细胞集落刺激因子(M-CSF)+NF-κB受体活化因子配体(RANKL)+细胞培养液,C组:OCP+钛颗粒+细胞培养液,D组:OCP+上清液(钛颗粒刺激巨噬细胞24 h后上清液)+细胞培养液,E组:OCP+M-CSF+RANKL+ZOL+细胞培养液,F组:OCP+上清液+ZOL+细胞培养液。每组细胞分别接种在玻璃盖玻片、皮质骨磨片和含骨检测表面的96孔板上,10 d后检测玻璃盖玻片上细胞抗酒石酸磷酸酶(TRAP)的表达及皮质骨磨片上骨吸收陷窝的形成,并以骨检测表面的骨吸收面积为指标比较各组破骨细胞的骨吸收活性。结果 B组、D组、E组和F组的OCP均能分化为能被TRAP染色成阳性的破骨细胞并形成骨吸收陷窝,其余组均未发现TRAP染色阳性的破骨细胞和骨陷窝。加入ZOL的F组骨吸收面积(5.54%±1.25%)较D组(10.34%±1.69%)明显减少,差异具有统计学意义(t=5.61,P0.01)。结论在体外实验中钛颗粒并不能直接刺激前体破骨细胞向破骨细胞转化;唑来膦酸钠可以抑制钛颗粒诱导的骨溶解作用。
Objective To investigate the effects of zoledronate on the titanium particle-induced osteolysis.Methods The osteoclast precursors (OCP) were isolated from the long bones of six-week-oldC57BL/6J mice and assigned into six groups with different components as follows : group A, only the culture medium; group B, the macrophage colony stimulating factor (M-CSF), the receptor activator of nuclear factor kappa ligand ( RANKL) and the culture medium; group C, the titanium particles and the culture medium; group D, the supernatant ( from the cultured mouse macrophages stimulated by the titanium particles for 24 h) and the culture medium;group E, the M-CSF, RANKL, ZOL and the culture medium;group F, the supernatant, ZOL and the culture medium.After 10 days, the coverslips were stained by the tartrate-resistant cultured acid phosphatase ( TRAP) , and the activity of the osteoclast cells was detected by the area of osteo-assay surface resorption .Results The TRAP positive multinucleated cells and

[ 可能符合您检索需要的词汇 ]

进入期刊文章
评价可注射纳米羟基磷灰石/胶原/硫酸钙(nHAC/CSH)植骨材料复合犬外周血基质细胞修复种植体周围骨缺损的骨形成情况。方法:犬外周血基质细胞(dBMPC)从健康成年犬的外周血中分离得到并行成骨诱导。选用4条成年杂种犬,拔除前磨牙后制备骨缺损模型,植入种植体。缺损处分三组进行处理:(1)空白组(Control);(2)单纯材料组(nHAC/CSH)和(3)可注射骨组(nHAC/CSH-dBMPC)。12周后处死动物,制备硬组织磨片,行亚甲基蓝染色并计算骨-种植体结合率(BIC)。结果:nHAC/CSH-dBMPC组BIC明显高于其余两组,具有统计学意义。结论:nHAC/CSH和dBMPC组成的可注射组织工程骨为即刻种植体周围骨缺损的临床修复另辟蹊径。但对于人类BMPC的利用还需进行进一步研究。
Objective:The aim of the study was to assess the new bone formation around immediate dental implants using nHAC/CSH loaded with dog blood-acquired mesenchymal progenitor cells (dBMPC) in a canine model. Methods: Dog blood-acquired mesenchymal progenitor cells (dBMPCs) were isolated from peripheral blood of healthy adult dogs. Four healthy mongrel dogs were used in this study. The alveolar bone defects around immediate implants of dogs were created. Each defect was randomly assigned to one of the following three groups:(1) no materials (controls); (2) injectable bone cement: nHAC/CSH; or (3) the injectable tissue engineered bone (ITB) group: nHAC/CSH- dBMPC; Methylene blue staining was used to examine the bone formation after 12 weeks. Results: The nHAC/CSH- dBMPC group showed significantly more bone-implant contact than either nHAC/CSH or control groups in the areas with peri-implant defects12 weeks after implantation. Conclusion: The results indicate that the ITB composed of nHAC/CSH

[ 可能符合您检索需要的词汇 ]