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61.
62.
Background: Laparoscopic stapling was found to be a viable option for attaching epimysial electrodes onto the abdominal surface of the
diaphragm. Stapling was preferable to suturing due to its simplicity and speed.
Methods: Of the two staplers tested in this study, the Ethicon Endopath was preferred over the Autosuture Endo Hernia because the
staples did not penetrate the diaphragm when an electrode tab thickness greater than 0.75 mm was used.
Results: The thickness of the electrode tab was an important factor in determining staple penetration but large variation in penetration
depth indicated that other factors may also play a role. An electrode tab thickness of 1.0–1.25 mm was suggested to minimize
the risk of diaphragm perforation.
Conclusions: The histological reaction to staples implanted up to 14 months was unremarkable, reflecting the safety of laparoscopic staples
for permanently anchoring electrodes on the diaphragm.
Received: 2 April 1996/Accepted: 12 June 1996 相似文献
63.
采用ELISA法检测104例各类型乙型肝炎(乙肝)患者的血清前-S2抗原(Pre-S2Ag)及其抗体(Pre-S2Ab),结果表明,Pre-S2Ag的出现与HBsAg、HBeAg、HBcAb呈显著相关性(P值均<0.005),主要见于乙肝急性期及慢性乙肝患者,说明病毒复制活跃、传染性强。而Pre-S2Ab阳性仅见于急性乙肝恢复期。 相似文献
64.
65.
Leningrad University. (Presented by Academician of the Academy of Medical Sciences of the USSR S. N. Golikov.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 111, No. 5, pp. 458–460, May, 1991. 相似文献
66.
用聚乙烯醇(PVA)的二甲基亚砜(DMSO)溶液对水热反应法合成的超细羟基磷灰石(HAP)进行表面改性,用溶液分散复合法分别制备了HAP含量均为0.03g/mE的聚乳酸(PLLA)/HAP和PLIA/HAP-PVA复合物,并经过挤出成型得到φ=5mm的棒材。重点研究了热拉伸取向的拉伸规律及表面改性前后HAP粒子在PLLA基质中的分散情况。结果表明,经PVA改性的HAP粒子在PLLA基质中的分散要明显优于未经改性的HAP粒子。拉伸取向后PLLA/HAP-PVA复合材料的弯曲强度达262MPa。 相似文献
67.
Paul P. Dillon Stephen J. Daly John G. Browne Bernadette M. Manning Elma Loomans Aart Van Amerongen Richard O'Kennedy 《Food and Agricultural Immunology》2003,15(3):225-234
Public concern surrounding antibiotic contamination in food and food products has made it imperative to develop analytical methods for their detection. Polyclonal antibodies were used in the development of a surface plasmon resonance (SPR)-based inhibition immunoassay for cephalexin. A conjugate consisting of cephalexin-bovine serum albumin (BSA) was immobilized on the dextran gel surface of the sensor chip. Binding/regeneration studies of antibody to immobilized cephalexin were studied and dissociation of the antibody from the immobilized cephalexin was easily achieved with 10 mmol l-1 NaOH. Forty surface regeneration cycles were carried out and found to be reproducible with only a 7.4% decrease in binding over this number of regenerations. Model inhibition immunoassays for cephalexin were developed in PBS and spiked milk samples with detection ranges of 4.88 to 2,500 ng ml-1 and 244 to 3,906 pg ml-1, respectively. 相似文献
68.
A. E. P. Villa E. M. Rouiller G. M. Simm P. Zurita Y. de Ribaupierre F. de Ribaupierre 《Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale》1991,86(3):506-517
Summary Single unit activity of 355 cells was recorded in the auditory thalamus of anesthetized cats before, during, and after the inactivation by cooling of the ipsilateral primary auditory cortex (AI). Most of the units (n = 288) showed similar functional characteristics of firing before and after the cryogenic blockade of AI. The spontaneous firing rate remained unchanged by cooling in 20% of the units and decreased in the majority of them (60%). In some regions, i.e. dorsal division of the medial geniculate body (MGB), lateral part of the posterior group of the thalamus, and auditory sector of the reticular nucleus of the thalamus, the maximum firing rate evoked by white noise bursts was generally affected by cooling in the same direction and to the same extent as the spontaneous activity. Units in the ventral division of MGB showed a characteristic increase of signal-to-noise ratio during cortical cooling. The corticofugal modulation led to the appearance or disappearance of the best frequency of tuning in 51 units and changed it by more than 0.5 octave in 34 units. The bandwidths of different response patterns to pure tones stimulation were used to define a set of functional properties. During cryogenic blockade of AI, two cortically modulated sub-populations of units were usually distinguished that exhibited changes for a given functional property. The complexity and diversity of the effects of cortical inactivation suggest that the corticothalamic projection may be the support for selective operations such as an adaptive filtering of the incoming acoustic signal at the thalamic level adjusted as a function of cortical activity. 相似文献
69.
青黛颗粒抗炎、镇痛作用的实验研究 总被引:3,自引:0,他引:3
目的 :通过对青黛颗粒抗炎、镇痛作用的实验研究 ,探讨该药治疗溃疡性结肠炎的作用机理。方法 :采用小鼠醋酸扭体法、大鼠棉球肉芽肿法和角叉菜胶所致大鼠足肿胀方法。结果 :青黛颗粒给药高、中、低剂量组和阳性对照药组均明显降低小鼠扭体次数 (P<0 .0 5~P<0 .0 1)。对大鼠棉球肉芽肿和大鼠足肿胀有显著的抑制作用 (P <0 .0 1~P <0 .0 0 1)。结论 :青黛颗粒分别对大鼠具有抗炎、对小鼠具有镇痛作用。且镇痛作用呈量效关系 相似文献
70.
A. Parthasarathy N. Sumathi R. Manoharan C. D. Natarajan R. Narmada B. R. Santhanakrishnan 《Indian journal of pediatrics》1987,54(5):779-784
Tuberculous infection among children continues to be a significant cause of morbidity. The symptom complex are so variable
among children that the final diagnosis often rests on the laboratory tests. Proper interpretation of the tests, specially
tuberculin test and radiographic studies, are necessary for establishing correct diagnosis. The usefulness of tuberculin test
in both unimmunized and BCG vaccinated children is highlighted. BCG accelerated response as a test should be reserved for
identifying serious form of pulmonary disease or CNS tuberculosis when the tuberculin test is negative. Radiographic assessment
may be sensitive in some instances but not always specific and hence needs cautious interpretation. Tuberculosis among BCG
vaccinated children though not uncommon, needs proper documentation. Current trends in the management of tuberculosis including
CNS forms are briefly outlined. 相似文献