In order to reduce the effect of imaging recognition error, the recognition location of projection is extended and refined, and the projection edge of sphere centre is implanted. So a pyramid is formed by radial line between the camera optical centre and the implanted point. A curved face is formed by the two pyramids and barbette sphere. To calculate the shape centre of the common section of the curved face, the shape centre is the coordinate of sphere centre.

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After anesthesia, the guinea pigs'scalp surface was exposed and two stainless screws (5 mm length and 1.2 mm diameter) were implanted at 6 mm in front of and 10 mm behind bregma, as reference electrode and recording electrode. In the middle, a third stainless screw was implanted as ground electrode. 3 days later, awaked guinea pigs were fixed in multifunctional head-body apparatus. RETI-port system was used to record PVEP of control group and experiment group.

麻醉后欧美三及片，在前囟前6 mm、后10 mm及矢狀縫正中處鉆孔性无码高潮在线网站，均植入長(zhǎng)5 mm日本久久黄色放视频、直徑1.2 mm的不銹鋼螺釘作為參考電極、記錄電極和地極探花自拍日韩视频在线。3 d后黄频美女裸体，將清醒狀態(tài)下的豚鼠固定于自制多功能頭身一體化固定臺(tái)面上，采用RET I-port系統(tǒng)(Roland Consult初黄色视频在线免费观看，德國(guó))分別記錄對(duì)照組和實(shí)驗(yàn)組圖形視覺誘發(fā)電位的變化亚洲成a人v欧美综合天堂软件。

Objective To estimate whether the implanted coralline hydroxyapatite prepared by hydrothermal conversion of coral can reach the level of compressive strength of bone in vivo, because CHA could be implanted in human body directly and then make the bone tissues grow into their porous structure, which will reinforce their strength.

目的 分析判定以珊瑚為基體，通過水熱交換法制成的羥基磷灰石植入體內(nèi)后的強(qiáng)度是否可以達(dá)到活體骨的水平日韩欧美到亚洲。

The experimental study of CBAB implanted in muscle of rabbits. In order to study implanted CBAB's dynamic biomechanics strength, its affection on tissue around and the concentration of Ca and P in blood, and to obsreve whether ectopia osteogenesis occure or not, we implanted CBAB samples, which were compounded in the proportion of 1 g CPC powder to 5 mg BMP, into rabbits'thigh flexor.

為了研究CBAB植入動(dòng)物體內(nèi)對(duì)外周血鈣加勒比在线一区中文字幕无码、磷水平的影響、CBAB的動(dòng)態(tài)生物力學(xué)強(qiáng)度變化和生物學(xué)行為免费网站日本A∨，為進(jìn)一步進(jìn)行CBAB用于骨填充的研究和應(yīng)用提供理論基礎(chǔ)和方法積累亚洲综合无码，按1 g CPC固相配5 mg rhBMP-2的配比將CPC與rhBMP-2復(fù)合成CBAB，經(jīng)手術(shù)植入于兔大腿屈肌中日韩写真福利资源网站。

The biomechanical tests showed that two kinds of artificial bones had not significant difference on compressive strength and Young\'s modulus(P＞0.05),while the flexural strength of nano-nacre artificial bone was less than the control group(P＜0.05).3.The results of CCK-8 showed that the difference were not significant in each group,the proliferation of osteoblast reached the peak at the 5th day;7 days after being co-cultured,the total protein content of study group was higher than control group and blank group(P＜0.05),while the difference between control group and blank group was not significantP＞0.05The difference of alkaline phosphatase activities among three groups was not significant(P＞0.05The SEM view showed that osteoblast attached and grew well in two kinds of artificial bone.4.X-ray photography showed that two kinds of powder started to degrade in 2 weeks;this phenomenon became more appear in 4 weeks,nano-nacre powder degraded faster than micron-nacre powder,while the hole shadow was easy to be found;in 8 weeks,all the femoral holes recovered and returned to normal bone mineral density in all groups.Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone grew fastest around the bone defect area in study group,while most slowly in blank groupP＜0.05 SEM(scanning electron microscope observation showed that nano-nacre powder degraded more quickly.The same result can be found through the demineralized sections morphometric analysis,and both of the composite artificial bones made from those two kinds of nacre powder had the good connection with the adjacent tissue in rats body without apparent inflammatory response.5.X-ray photography showed that rabbit\'s bone defects healed faster in study group since NNAB implanted than in control group since MNAB implanted.At 24 weeks after operation,bone density in radial defects had nearly accessed to the normal area,while lower in control group,and turned up nonunion in blank group;The checking of BMD showed that results in study group were higher than those in control group at 8,16 and 24 week(P＜0.05), and the difference between the BMD values in study group at 24 week and those in blank group was not significant(P＞0.05).The gross specimens showed satisfactory histocompatibility both in study group and in control group,with bone tissue growing from two sides into the center of implanted materials; Normal slices in HE stain and hard tissue grinding slices in Stevenel\'s blue/Van Geison\'s picro-fuchsin stain showed that the bone growth tendency was better in study group than that in control group,and the medullary cavity had been penetrated to the implanted materials in study group at 24 week;Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone in both groups grew fastest 8 weeks after surgery,while slow down at 16 week.

納米珍珠層/消旋聚乳酸復(fù)合人工骨與微米珍珠層/消旋聚乳酸復(fù)合人工骨分別與成骨細(xì)胞共培養(yǎng)后无码变态拳头交视频，其各時(shí)間點(diǎn)CCK-8法檢測(cè)值與空白對(duì)照無(wú)顯著差異(P＞0.05)，成骨細(xì)胞均在第5天達(dá)到增殖高峰期你懂的免费在线视频；培養(yǎng)7天后欧美性爱爱欧美，實(shí)驗(yàn)組細(xì)胞蛋白含量高于對(duì)照組及空白組(P＜0.05)，后兩者之間則無(wú)顯著差異P＞0.05堿性磷酸酶活性在三組間均無(wú)顯著差異(P＞0.05電鏡下可見成骨細(xì)胞在兩種人工骨上都有良好生長(zhǎng)貼附能力91AⅤ美国黄片。4.X-ray顯示兩種粉體在大鼠股骨骨洞植入第2周時(shí)都開始出現(xiàn)了降解3D动漫爆操插，第4周時(shí)更為明顯，納米珍珠層粉較之微米珍珠層粉降解更快@免费毛片网\，而空白對(duì)照組骨洞陰影仍可見久操免费精品视频，至8周時(shí)，則所有組骨洞均己閉合修復(fù)国产粗大猛烈进出高潮视频大全，X-ray下已不可見原鉆孔痕跡精品乱伦视频免费播放，恢復(fù)正常骨質(zhì)密度欧美亚洲韩国视频一区；硬組織磨片四環(huán)素?zé)晒怆p標(biāo)記結(jié)果顯示納米珍珠層粉植入組較其余兩組在骨缺損區(qū)周圍新骨生長(zhǎng)速度更快国产激情刺激精品狼区，空白組速度最慢P＜0.05電鏡觀察及常規(guī)脫鈣切片亦可見到納米粉體降解較快；由以上兩種原材料制得的納米珍珠層/消旋聚乳酸復(fù)合人工骨與微米珍珠層/消旋聚乳酸復(fù)合人工骨在大鼠體內(nèi)均與周圍組織結(jié)合良好.9x9x色福利骚网，無(wú)明顯炎癥反應(yīng)免费不卡在线A片。5.X-ray顯示納米珍珠層/消旋聚乳酸復(fù)合人工骨植入兔橈骨缺損區(qū)后其骨愈合速度較對(duì)照組微米珍珠層/消旋聚乳酸復(fù)合人工骨植入的快黄网站在看视频在线，至植入術(shù)后24周，實(shí)驗(yàn)組骨缺損區(qū)接近正常骨密度人人人人人人人看，對(duì)照組骨缺損區(qū)密度較低国产精品视频7171，空白組則呈現(xiàn)骨不連狀態(tài)；骨密度測(cè)量結(jié)果顯示術(shù)后8周AAA黄色视频免费观看、16周国产精品视频馒头一线天、24周實(shí)驗(yàn)組的骨密度值高于對(duì)照組(P＜0.05，24周實(shí)驗(yàn)組的骨密度值與術(shù)前所測(cè)得的正常值無(wú)顯著性差異P＞0.05動(dòng)物取材大體所見均顯示組織相容性良好尹人综合日本在线www官网，骨組織逐漸由植入材料兩端向中央生長(zhǎng)十八禁欧美日韩；常規(guī)切片HE染色及硬組織磨片Stevenel\'s blue/Van Geison\'s picro-fuchsin聯(lián)合染色均可見實(shí)驗(yàn)組骨缺損區(qū)長(zhǎng)勢(shì)優(yōu)于對(duì)照組，至術(shù)后24周最新福利网址在线，實(shí)驗(yàn)組骨髓腔與材料已呈相交通狀人人操,人人摸97；硬組織磨片熒光顯微鏡下觀察，兩組材料在術(shù)后8周處于骨生長(zhǎng)最快速時(shí)期日韩欧美黄色网站，16周時(shí)速度開始減慢三级片毛片免费看，術(shù)后4、8欧美18XXOO视频在线群、16周時(shí)實(shí)驗(yàn)組的新骨生長(zhǎng)速度均較對(duì)照組的快

METHODS: Forty-five rabbits were randomly divided into three groups (n=15): composite group implanted with the complex of heterogenic deproteinized cancellous bone/BMP/fibrin, heterogenic deproteinized cancellous bone group implanted with heterogenic deproteinized cancellous bone, and control group implanted with nothing.

45只兔按隨機(jī)數(shù)字表法分為3組欧美三级片一区，復(fù)合材料組、異種脫蛋白松質(zhì)骨組欧美日韩啊v在、空白組www.艹逼.com，每組15只。

Methods The CXB combining BM was implanted into the sacrospinalis muscle of rabbits, and CXB implanted alone was used as control. Eighteen Japanese rablits with longear were used. The size of CXB was 5 mm×5 mm×5 mm, and the implanted materials were taken out at 2BBBBBXXXXX欧洲熟妇、 4国产性爱短视频、 8、 12九九黄色视频、在线观看、 16 and 24 weeks after implantation.

將CXB與BM復(fù)合及單純CXB植入兔的骶棘肌內(nèi)最新国外哟哟aⅴ网站，術(shù)后2、43WWW日本视频、8小说区图片、12、16及24周取出植入材料作組織學(xué)及組織化學(xué)檢查99九九精品免费视频观看，觀察植入材料的成骨作用一级a爱做片无码免费手机在线。

New Zealand white rabbits (3-4 months old, 3-4 kg weight) were the test animals, and they were divided into three groups proceeding in this study. In group A:One PLLA screw and one commercial screw were implanted in the right tibia. Two PLLA screws were implanted in the left. Furthermore, one PLLA bar was implanted in both right and left tibia respectively with onlay model in group B. Also,one PLLA plate was implanted in the left tibia and one commercial plate in the right respectively with onlay model in group C . Many tests were done on each sample in 1, 4, 8 and 12 weeks which included the observation of tissue response in group A, and the change of three-points bending, weight loss, molecular weight, crystallinity and morphology of fracture surface by scanning electronic microscopyin group B, and the change of three-points bending, weight loss and molecular weight in group C.

所使用實(shí)驗(yàn)動(dòng)物為24只3-4個(gè)月大，體重3-4公斤的紐西蘭兔高h视频一区，并將所使用材料及動(dòng)物分為A久久午夜精品A级毛片、B、C三組進(jìn)行。A組中於實(shí)驗(yàn)兔之右脛骨植入兩支骨釘日韩手机黄色视频，一支為自制骨釘国产剧情在线一区，一支為MacroPore市售骨釘，并鉆一孔但不植入骨釘做為控制組人人搞人人插人人看；另於實(shí)驗(yàn)兔之左脛骨植入兩支自制骨釘色哟哟·com，另標(biāo)示一區(qū)不鉆孔不植入骨釘做為控制組。B組采用onlay1 模式於實(shí)驗(yàn)兔之左右脛骨各植入一自制長(zhǎng)型片一级一a无码黄在线观看。C組也采用onlay模式於實(shí)驗(yàn)兔之左脛骨植入一自制骨板国产在线精品专区第1页，於右脛骨植入一市售骨板，各於不同時(shí)間點(diǎn)( 1人人爽人人爽人人爽人人爽， 4及12周)將A及C組香蕉欧美，而於( 1，4黄片免费看A片，8及12周)將B組內(nèi)的植入物取出進(jìn)行各種測(cè)試美美美女视频高清免费，包括A組的組織切片觀察及B組的三點(diǎn)彎曲變化、質(zhì)量損失www.在线毛片、分子量變化女人跪下吃男人J8免费视频、結(jié)晶度變化及掃描式電子顯微鏡觀察斷面型態(tài)改變及C組的三點(diǎn)彎曲變化、質(zhì)量損失99视频色色、分子量變化一级做a爱全过程视频。

Expect for a few pittings,the N+1-implanted surface had a best fineness (average roughness Ra≈4.2nm), close to the unimplanted original surface.The N+2-implanted surface had a black dendritic area,and had a poorer fineness (Ra≈16nm).While in the N+10-implanted surface appeared a ripple structure,with the poorest fineness (Ra≈40nm).

但其表面形貌各異：N+1注入的表面除存在少量點(diǎn)蝕坑外，光潔度最高(平均粗糙度Ra≈4.2nm)日韩美女激情A片免费视频99，接近未注入前的原始表面(Ra≈3.5nm)国产免费强奸初女视频；N+2注入的出現(xiàn)黑色枝狀區(qū)域，光潔度次之(Ra≈16nm)尹人网国产精品，而N+10注入的則出現(xiàn)&波紋&狀結(jié)構(gòu)久久久免费视频日韩，光潔度最差(Ra≈40nm)。

The seed embryoes were penetrated by 〓 ion beams of 75 MeV/u and the seed endosperms were implanted by the proper degraded 〓 ions, and soluble protein of the seedling in M1 generation was divided into 5 sections to analyze their changes at different molecular weight. 1 In comparison with control, the relative content of the second section (molecular weight is heavier in all sections) of all irradiated materials got down, while the relative content of the fifth section (molecular weight is the lightest) of those went up. 2 The penetrating seeds made the relative content of the first section (molecular weight is the heaviest) and the third section (mid-molecular weight) drop, while the fourth section went up. Moreover, the changes of the third section and the fourth section of the penetrated materials were clearly different from those of the implanted materials. 3 The difference between implanted embryo and implanted endosperm existed in deeper dropping of the first section and higher rising of the fifth section on relative content of soluble protein of the latter. 4 On irradiated materials at lower doses, there were exceptional changes of soluble protein, it may be thought that there was excited effect of low dose.

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