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| 1 | 心脏脂肪垫在肺静脉灶性放电引发心房颤动中的作用显示文摘探讨心脏脂肪垫在肺静脉灶性放电与心房颤动 (简称房颤 )中的作用。 14条狗麻醉后经右侧开胸暴露右侧肺静脉。将 8极电极标测导管缝在右上肺静脉用于起搏。另放一 8极电极导管固定在临近右肺静脉和左房交接处脂肪垫。术中监测ECG的II和aVR导联、血压和体温。以 0 .1ms刺激间期 ,2 0Hz刺激频率的直方波刺激脂肪垫的迷走神经丛 30~ 5 0s,随着电压从 1~ 4 .5V ,心率逐渐减少 (P <0 .0 5 ) ,同时出现房性早搏、房性心动过速和房颤。在刺激迷走神经丛的同时 ,以 2 0 0~ 80 0次 /分的频率刺激肺静脉 (对照组没有迷走神经丛刺激 )均能诱发房颤。在迷走神经丛刺激下 ,以S1S1330ms,S1S2 稍长于肺静脉不应期的配对间期刺激肺静脉诱发房颤。与对照组比较 ,在迷走神经刺激下 ,肺静脉刺激诱发房颤的房性早搏数 ,随着刺激电压从 0 .6到 3V的增加 ,从 7个减少到 2个 (P <0 .0 5 )。 7条狗局部去神经后 ,6条狗在同样肺静脉刺激诱发房颤的电压条件下不能诱发房颤 ,其中有 3条在电压大于 9V时诱发房颤。结论 :在临近右肺静脉和左房交接处脂肪垫刺激可以将肺静脉灶性放电转变成房颤。因此 ,临床上自发的迷走神经丛的张力增高是肺静脉灶性放电转变成房颤的基础。 | 侯月梅 伊惠霞 Benjaming J.Scherlag | 2003 | 中国心脏起搏与心电生理杂志2003,17,5: | 28 |
| 2 | Three-dimensional analysis of the physiological foramen geometry of maxillary and mandibular molars by means of micro-CT显示文摘The aim of this study was to investigate the physiological foramen diameter, shape and distance between physiological and anatomical apex of maxillary and mandibular first and second molars. Accurate knowledge of the physiological foramina morphology; thus, inherent mechanical shaping technical hindrances, is decisive when taking the corresponding root canal final preparation decision. The morphological dimensions of a total of 1 727 physiological foramina were investigated by means of micro-computed tomography. Mean narrow and wide(to a high number, oval) diameters of the physiological foramen were 0.24,0.22 and 0.33 mm and 0.33, 0.31 and 0.42 mm in mesiobuccal(MB), distobuccal(DB) and palatal(P) roots in maxillary first molars; 0.24, 0.22 and 0.33 mm and 0.41, 0.33 and 0.44 in MB, DB, and P roots in maxillary second molars. Mandibular first molars showed mean narrow and wide diameters of 0.24 and 0.30 mm and of 0.39 and 0.46 mm in mesial(M) and distal(D)roots; second mandibular molars showed 0.25 and 0.31 mm and 0.47 mm in M and D roots. The mean distance between the physiological foramina and anatomical apex was 0.82, 0.81 and 1.02 mm and 0.54, 0.43 and 0.63 mm in MB, DB and P roots of the maxillary first and second molars, respectively. A mean distance of 0.95 mm(M) and 1.05 mm(D) in the first and0.78 mm(M) and 0.81 mm(D) in the second mandibular molars was observed. Based on the results obtained, assumable recommendations for final preparation size of the physiological foramen were calculated. However, when taking into consideration, the resulting standard deviations of marginal errors must be cautiously considered when taking a final decision in clinical endodontic treatment. | Thomas Gerhard Wolf Frank Paqué Michael Sven Patyna Brita Willershausen Benjamín Briseno-Marroquín | 2017 | International Journal of Oral Science2017,9,3: | 4 |
| 3 | 心脏脂肪垫在肺静脉引发房颤中的作用显示文摘目的探讨窦房结-心房脂肪垫(SAFP)在右上肺静脉灶性放电引发阵发性房颤(PAF)中的作用。方法12条新疆家养犬,苯巴比妥钠麻醉,经右侧开胸暴露右侧肺静脉。将1根8极标测电极导管固定在右上肺静脉,给予S1S1600bpm起搏刺激,另将1根8极(1.5×1.5cm)电极板固定在心外膜窦房结-心房脂肪垫上。术中监测II和aVR导联、血压和体温。以1~4V电压、1000bpm频率刺激窦房结-心房脂肪垫30~60s。结果12条家养犬在给予S1S11000ppm窦房结-心房脂肪垫刺激,随着电压从1增加到4V,心率从142±20bpm减少到75±30bpm(p<0.05),同时出现房性早搏、房性心动过速(房速)和房颤,同时予以右上肺静脉S1S1600ppm刺激,诱发房颤的房性早搏数随着刺激电压1~4V的增加从7个减少到2个,并以S1S1300ms,S1S2稍长于右上肺静脉不应期的早搏右上肺静脉刺激。S1S1600ppm刺激下房颤诱发率从基础状态的49.86%提高到70.59%,S1S2早搏刺激下从3.78%提高到16.6%(p<0.05)。7条狗在4%利多卡因4ml注射到窦房结-心房脂肪垫局部阻滞神经后,6条狗在同样右上肺静脉刺激诱发房颤电压的条件下不能诱发房颤,其中3条狗在电压增加大于9V时诱发房颤。房颤诱发的有效刺激部位在窦房结-心房脂肪垫2~3mm的范围内。结论有效部位窦房结-心房脂肪垫刺激,能够诱发慢频率依赖性阵发性房颤,刺激窦房结-心房脂肪垫增加右上肺静脉阵发性房颤的诱发率,局部神经阻滞降低或消除阵发性房颤的诱发.提示:增强窦房结-心房脂肪垫的自发神经放电,可能是临床右上肺静脉灶性放电转变成房颤的基础,消融窦房结-心房脂肪垫可能预防阵发性房颤的诱发。 | 侯月梅 康慧 Benjaming J Scherlag | 2007 | 临床心电学杂志2007,16,2: | 3 |
| 4 | Root canal morphology and configuration of 123 maxillary second molars by means of micro-CT显示文摘The aim of this study was to investigate the root canal configuration, accessory canals and number of main foramina of 123 maxillary second molars by means of micro-computed tomography. The teeth were scanned and reproduced with 3D software imaging. The root canal configuration and number of main foramina were evaluated by means of a four-digit system. The morphological complexity of human maxillary second molars is depicted by the number of accessory and connecting canals. The most frequently observed root canal configurations in the mesiobuccal root were 2-2-2/2(19.5%), 2-2-1/1(14.6%) and 2-1-1/1(13.0%). A 1-1-1/1 configuration was observed in 93.5% and in 96.7% in the distobuccal and palatal roots, respectively. The MB1 root canal had one accessory canal(18.7%), and 8.9% of the MB2 root canal had one or two accessory canals. The distobuccal(11.3%) and palatal(14.6%) root canals had at least one accessory canal, and connecting canals were observed in16.3% of mesiobuccal roots. The MB1, MB2, distobuccal and palatal root canals had one main foramen in 99.2%, 43.1%,98.4% and 99.2% of samples, respectively. In the mesiobuccal root, one accessory foramen was detected in 14.6%, two were detected in 7.3%, and three were detected in 5.7%. The distobuccal root showed one or two accessory foramina in 9.1% of samples. The root canal configuration of maxillary second molars is quite heterogeneous; the mesiobuccal root has predominantly two root canal entrances(58.4%, 1 in 41.1%) with one main foramen(54.4%). Two main foramina were observed in 43.0%. Morphological variations, connecting and accessory canals were observed in all apical thirds. | Thomas Gerhard Wolf Frank Paqué Anja-Christin Woop Brita Willershausen Benjamín Briseno-Marroquín | 2017 | International Journal of Oral Science2017,9,1: | 3 |
| 5 | Shoot-level biomass allocation is affected by shoot type in Fagus sylvatica显示文摘Aims The present study aims(i)to examine if recently reported interspecific shoot-level biomass allocational trade-offs,i.e.isometric trade-offs between leaf mass(LM)and stem mass(SM)and between leaf size and leaf number,hold intraspecifically and(ii)to explore whether those scaling relationships are independent of shoot type(i.e.long vs.short shoots).Methods In order to address our questions,we used Fagus sylvatica saplings growing under a broad light range that were sampled in theWestern Carpathians Mountains(Slovakia).Important Findings We found that:(i)intraspecific shoot-level biomass allocational trade-offs differ from those reported interspecifically and that(ii)long and short shoots differ in biomass allocation scaling coefficients.Allometric relationships with slopes statistically smaller than 1.0 or higher than-1.0,were found between SM and LM and between mean leafing intensity and individual leaf mass,respectively,in long shoots.In contrast,isometric scaling was found in short shoots.This suggests that leaf mass in short shoots is unaffected by shoot stem mass,in contrast to long shoots.Short shoots also had a larger fraction of biomass allocated to leaves.Beech shoots,as has been observed in other shoot dimorphic species,are specialized,with short shoots specializing in carbon gain and long shoots in space acquisition.A greater shift in LM than in SM among species during speciation shifting from allometric intraspecific relationships to an isometric interspecific scaling relationship between those traits could explain the discrepancies between the outputs of the present intraspecific study and others similar studies.This study draws attention to the importance of considering shoot types in future studies dealing with allocation rules in species with dimorphic shoots. | Benjamín Jarcuska Ruben Milla | 2012 | Journal of Plant Ecology2012,5,4: | 2 |
| 6 | Employee job attitudes and organizational characteristics as predictors of cyberloafing显示文摘 | Benjamín Liberman Gwendolyn Seidman Katelyn Y.A. McKenna Laura E. Buffardi | 2011 | Computers in Human Behavior2011,,6: | 2 |
| 7 | An experimental and theoretical study of the formation and microstructure of porous silicon显示文摘 | Beale M I J Benjam J D Uren M J | 1985 | Cryst Growth1985,73,3: | 1 |
| 8 | Protection of vascular, endothelial cells from hydrogen peroxide-induced oxidant injury by pyenosides saponins of Gynostemma pentophyllum 显示文摘 | Li L Benjam in HSL | 1993 | Phytother Res1993,,7: | 1 |
| 9 | Diterpenoids from Lycopus europaeus and Nepeta septemcrenata:Revised structures and new isopimarane derivatives显示文摘 | Ahmed A Hussein Benjamín Rodríguez María de la Paz Martínez-Alcáizar | | 0,,: | 1 |
| 10 | A new technique for building maps of large scientific domains based on the cocitation of classes and categories显示文摘 | Félix Moya-Anegón Benjamín Vargas-Quesada Victor Herrero-Solana Zaida Chinchilla-Rodríguez Elena Corera-álvarez Francisco J. Munoz-Fernández | 2004 | Scientometrics2004,,1: | 1 |
| 11 | Lung inflammatory pattern and antibiotic treatment in pneumonia显示文摘 | María-JoséLorenzo Inés Moret Benjamín Sarria | 2015 | Respir Res2015,16,5: | 1 |
| 12 | Isopimaranediterpenoids from Lycopus europaeus显示文摘 | Ahmed A Hussein Benjamín Rodríguez | | 0,,03: | 1 |
| 13 | Assessment of some chemical parameters in marine sediments exposed to offshore cage fish farming influence: a pilot study显示文摘 | Felipe Aguado-Giménez Benjamín García-García | 2004 | Aquaculture2004,,1: | 1 |
| 14 | Indenpedent risk factors for atrial fibrillation in a population based co- hort The Framingham heart study显示文摘 | Benjam in EJ Levy D Vaziri SM | 1994 | JAMA1994,271,: | 1 |
| 15 | HF over the horizon radar ship detection with short dwells using clutter cancellation 显示文摘 | Benjam T | 1998 | Radio Science1998,33,4: | 1 |
| 16 | Microbiological rates and enzyme activities as indicators of functionality in soils affected by the Aznalcóllar toxic spill显示文摘 | M. Belén Hinojosa Roberto García-Ruíz Benjamín Vi?egla Jose A. Carreira | 2004 | Soil Biology and Biochemistry2004,,10: | 1 |
| 17 | A nteriorapproach w ith expandable cage im plantation in m anagement of unstable thoracolum bar fractu res: results of aseries of 93 p atien ts显示文摘 | T hom as G K aissar F P atric k R Benjam in B e t al | | N eurochirurgie0,62,2: | 1 |
| 18 | Threshold voltage, and 2D potential modeling within short-channel junctionless DG MOSFETs in subthreshold region显示文摘 | Thomas Holtij Mike Schwarz Alexander Kloes Benjamín I?íguez | 2013 | Solid State Electronics2013,,: | 1 |
| 19 | Size-dependent effects continuous and intermittent feeding on starvation time and mass loss in staring yellow perch larvae and juveniles显示文摘 | Benjaming H Rice J A Crowder L B | 1996 | Tarans Am Fish Soci1996,125,: | 1 |
| 20 | FGF-10 is de- creased in bronchopulmonary dysplasia and suppressed by Toll-like receptor activation显示文摘 | Benjam J T Smith R J Halloran B A | 2007 | Am J Physiol Lung Cell Mol Physiol2007,292,2: | 1 |