Establishing an human spine dynamic model is an significan event to study spine injured biomechanics of pilot " s ejective injury, parachute opening, landing and study the endurance to impact loading on human spine. in this paper, the huston " s method of kane " s equations is developed so that it can be applied to the multibodysystem including translation between the bodyies. the dynamic model of human spine is provided basing on these theories, while the big movement of spine is considered. the deformation of vetebra is far smaller comparing with the intervetebra disc, so the spine is considered into multibodysystem including rigid bodies ( vetebra ) and the flexible bodies ( intervetebra disc ). the computer solution correspond with the results of the large scale human impact test. the rigid coefficient factors and the damping factor of intervetebra joints are obtained
人體
脊柱動力學
模型的建立對研究飛行員彈射救生、傘兵跳傘開傘、著陸等
脊柱損傷的生物力學以及研究人體
脊柱耐受沖擊載荷的極限問題都具有重要意義.首先發展了凱恩方程的休斯頓方法,使其可應用於變形體連接的多體系統,並以此理論為依據建立人體整椎
脊柱沖擊動力學
模型,此時考慮
脊柱的大位移運動,每個椎骨的變形相對椎間盤的變形小得多,把
脊柱看成由剛體(椎骨)和變形體(椎間盤)組成的多體系統.並以大型真人坐姿沖擊實驗結果進行了擬合,最後得到腰椎間關節剛度系數因子和阻尼系數因子
Establishing experimental allergic encephalomyelitis model in rats
實驗性變態反應性腦
脊髓炎大鼠
模型的建立
Meterals and methods subject were 30 male wistar rats which were made febrile by lps intraper - itoneal injection. the rectal temperature of the rats were monitored by the digital esthesiometer. effect of - mshon fever was observed and changes in levels of avp both in the plasma and csf were detected a fter administration of - msh
材料與方法實驗採用雄性wistar大鼠,並建立大鼠lps性發熱
模型,通過檢測大鼠直腸溫度,觀察靜脈注射- msh對大鼠lps性發熱反應的影響及血漿和腦
脊液中avp含量的變化。
" x - ray gaze small cut extirpating soft organism eyewinker " got the fourth prize in military field ; " research and application of wild war one - time operation bandage " got the second prize ; " making of rabbit paralyze modal and rachis transplant experiment " the fourth prize of technical progress
「 x -線直視下小切口摘除深部軟組織異物」獲軍內科技進步4等獎。 「野戰一次性手術敷料包研製及應用」獲全軍科技二等獎。 「家兔癱瘓
模型的製做以及胎兔
脊髓移植的實驗研究」獲得軍內科技進步4等獎。
The ratio of cell body region was highest in mollusc, cellana toreuma 26. 18 %, neverita didyma 28. 13 %, mactra chinensis 27. 53 %. this may be the express in nervous system of mollusc with passive defense strategy, low motor ability and lack of developed sense organ, in environmental adaptation. the ratio of cell body region was lowest in crustacean, squilla oratorio 11. 43 %, gaetice depressus 15. 53 %
結果發現,軟體動物神經元占神經節體積的比例最高(嫁(蟲戚) 、扁玉螺、中國蛤蜊分別為26 . 18 , 28 . 13 , 27 . 53 ) ,而且其比例要大於其他無
脊椎動物,這可能正是軟體動物在適應環境過程中的被動防禦策略導致運動能力低下、特殊感官欠發達的身體結構
模式在神經系統結構上的一種表現。
Specification for human sprinal cord and vertebral model
脊髓與椎骨部分
模型技術條件
Analysis of shear lag effect of great cantilever steel box beam
大懸臂鋼
脊骨梁結構
模型剪力滯效應探討
Result : the c3 to c7, intervertebral discs, spinal cord, cervical nerves, vertebral artery, longus colli, larynx ( trachea ), pharynx ( esophagus ), common carotid artery ( internal and external carotid artery ), internal jugular vein, vagus nerve and sternocleidomastoid were successfully reconstructed and displayed
結果:成功重建並立體顯示第3 ~ 7頸椎、椎間盤、
脊髓、頸神經、椎動脈、頸長肌、喉(氣管) 、咽(食管) 、頸總動脈(頸內、外動脈) 、頸內靜脈、迷走神經和胸鎖乳突肌等解剖結構的位置關系,建立了頸前入路相關結構的三維可視化
模型。
Equivalent circuit method is usually used before. this method has apparent defect, that is, the ignorance of higher order mode effect, which can greatly affect the computational accuracy. in cases that require high accuracy, this method is unusable
以前一般採用等效電路法分析和設計
脊波導元器件;這種方法的缺點比較明顯,那就是對高次
模的影響不加考慮,使得計算精度大受影響,在較高要求的場合甚至完全不可用。
We adjust the strength of embedded watermark in according to the visual model in the ridgelet domain. experimental results show that our algorithm is very effective. performance improvement is obtained
論文根據小
脊變換域中的視覺
模型,按照小
脊變換域中計算出水印嵌入強度的權重,用擴頻的方法來嵌入水印信息。
This highly detailed life - size model shows all significant features of each vertebra, including spinal cord, nerve roots, the vertebral artery, a herniated disc and vertebral notch etc. ideal teaching model for students, patient education of chiropractors
這款自然大
脊椎
模型非常詳細地顯示了每根
脊椎的所有主要特徵,包括
脊椎、神經根、
脊椎動脈、分椎間盤、
脊柱橫突和
脊椎切面,是
脊椎指壓治療、整形外科和其他醫學專業的理想的教學
模型,也是公司衛生保健方面的理想的
模型。
For the first time, the coaxial ridge - disk - loaded cylindrical waveguide as sws is presented. its dispersion equation and the expression of coupling impedance are given by application of the field matching method. a series of numerical results show that the influence of structure dimensions on the dispersion characteristics and interaction impendance
三、創造性地提出
脊加載同軸膜片圓波導慢波結構,並對其採用嚴格的場匹配法,詳細推導了色散方程和耦合阻抗表達式,並得到一系列有關系統結構參量與色散和耦合阻抗之關系的數值
模擬結果。
Though adopting the - coordinate transformation in the control equations and mode - splitting technique, the external mode ( surface gravity waves ) is solved by the improved double - sweep - implicit finite difference method ; the internal mode ( internal gravity waves ) untilizes the eulerian - lagrangian method, which improves the implicit - difference scheme for the vertical direction. the newly developed 3d numerical tidal model with implicit scheme has been successfully applied in the radial sandbanks area
基於過程分裂法及垂向坐標伸縮變換,外
模式採用改進型雙步全隱有限差分dsi法,內
模式採用歐拉?拉格朗日公式,改進了三維垂向隱式格式,成功地建立了南黃海輻射狀沙
脊群海域三維全隱格式潮流數學
模型。
Felspine the greater in shadowmoon valley will no longer evade when engaged
影月谷的魔
脊龍在激活后不會再進入「閃避
模式」 。
In both cases, in order to allow or deny access, software analyzes the geometric pattern of minutiae, such as the ridges and valleys that are unique to every finger, and compares it with patterns registered by legitimate users
以上兩種裝置要決定允許或拒絕存取,都必須利用軟體分析指紋特徵點的幾何圖案,例如每根手指特有的脊紋與溝紋,然後再與合法使用者登錄的指紋模式進行比對。