全文获取类型
收费全文 | 211篇 |
免费 | 103篇 |
国内免费 | 2篇 |
出版年
2024年 | 3篇 |
2023年 | 12篇 |
2022年 | 14篇 |
2021年 | 19篇 |
2020年 | 16篇 |
2019年 | 11篇 |
2018年 | 16篇 |
2017年 | 30篇 |
2016年 | 29篇 |
2015年 | 33篇 |
2014年 | 20篇 |
2013年 | 22篇 |
2012年 | 13篇 |
2011年 | 18篇 |
2010年 | 4篇 |
2009年 | 6篇 |
2008年 | 8篇 |
2007年 | 1篇 |
2006年 | 6篇 |
2005年 | 5篇 |
2004年 | 2篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 2篇 |
1999年 | 3篇 |
1998年 | 5篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 1篇 |
排序方式: 共有316条查询结果,搜索用时 15 毫秒
311.
312.
《Current biology : CB》2023,33(1):122-133.e4
- Download : Download high-res image (301KB)
- Download : Download full-size image
313.
H. Nishino M. Sakai L. H. Field 《Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology》1999,185(2):143-155
The cricket Gryllus bimaculatus displayed freezing (thanatosis) after struggling while the femoro-tibial joints of the walking legs were forcibly restrained.
Myographic recording indicated that strong contraction of the flexor tibia muscle “leg flexion response” occurred under this
restrained condition. During thanatosis, when the femoro-tibial joint was passively displaced and held for several seconds,
it maintained its new position (catalepsy). Only discharge of the slow flexor units was mechanically indispensable for maintaining
thanatosis and catalepsy. Differing roles of identified neuron subgroups of the femoral chordotonal organ were elucidated
using this behavioral substrate. Ablation of the dorsal group neurons in the ventral scoloparium strengthened the leg flexion
response and the normal resistance reflex, while ablation of the ventral group weakened both motor outputs. Ablation of the
dorsal scoloparium neurons, or other main sensory nerves caused no detectable deficiency in femoro-tibial joint control. These
results imply that both modes of flexor muscle activation promoted by the ventral group neurons are normally held under inhibitory
control by the dorsal group. It is hypothesized that this antagonistic function causes immobilization of the femoro-tibial
joint in a wide range of angles in thanatosis and catalepsy.
Accepted: 12 November 1998 相似文献
314.
The biology of fracture healing is better understood than ever before, with advancements such as the locking screw leading to more predictable and less eventful osseous healing. However, at times one’s intrinsic biological response, and even concurrent surgical stabilization, is inadequate. In hopes of facilitating osseous union, bone grafts, bone substitutes and orthobiologics are being relied on more than ever before. The osteoinductive, osteoconductive and osteogenic properties of these substrates have been elucidated in the basic science literature and validated in clinical orthopaedic practice. Furthermore, an industry built around these items is more successful and in demand than ever before. This review provides a comprehensive overview of the basic science, clinical utility and economics of bone grafts, bone substitutes and orthobiologics. 相似文献
315.
Misalignment and soft-tissue imbalance in total knee arthroplasty (TKA) can cause discomfort, pain, inadequate motion and instability that may require revision surgery. Balancing can be defined as equal collateral ligament tensions or equal medial and lateral compartmental forces during the flexion range. Our goal was to study the effects on balancing of linear femoral component misplacements (proximal, distal, anterior, posterior); and different component rotations in mechanical alignment compared to kinematic alignment throughout the flexion path. A test rig was constructed such that the position of a standard femoral component could be adjusted to simulate the linear and rotational positions. With the knee in neutral reference values of the collateral tensions were adjusted to give anatomic contact force patterns, measured with an instrumented tibial trial. The deviations in the forces for each femoral component position were then determined. Compartmental forces were significantly influenced by 2 mm linear errors in the femoral component placement. However, the errors were least for a distal error, equivalent to undercutting the distal femur. The largest errors mainly increase the lateral condyle force, occurred for proximal and posterior component errors. There were only small contact force differences between kinematic and mechanical alignment. Based on these results, surgeons should avoid overcutting the distal femur and undercutting the posterior femur. However, the 2–3 degrees varus slope of the joint line as in kinematic alignment did not have much effect on balancing, so mechanical or kinematic alignment were equivalent. 相似文献
316.
J. M. Tenney 《Human Evolution》1990,5(4):397-401
The incidence and distribution of trauma is examined in a large number of individuals from many burial sites in California.
The material represents part of an on-going curational effort at the Lowie Museum of Anthropology. Trauma is confined to fractures,
dislocations, and projectile wounds for the purposes of this study. Only antemortem fractures are considered.
The findings suggest that most fracture were due to accidents, though several parry fractures are present. The functional
results of healing do not warrant any conclusions as to the efficacy of treatment or lack thereof. Several projectile wounds
are seen, some with evidence of healing.
Presented in part at the 55th annual meeting of the American Association of Physical Anthropologists, Albuquerque, New Mexico,
April 1986. 相似文献