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It is not unusual for emergency physicians to quickly identify whether a patient
would have wanted to be resuscitated or intubated in a cardiac arrest situation,
but patients’ other preferences for end-of-life care or organ donation are less
commonly ascertained in the emergency department. Typically, the decision
process regarding such goals at end of life may be “deferred” to the intensive
care unit. We present a case illustrative of the complexity of discussing organ
donation in the emergency department and suggest that patients who die in the
emergency department should be afforded the respect and consideration provided
in other parts of the hospital, including facilitation of organ transplantation.
As circulatory determination of death becomes a more common antecedent to organ
transplantation, specific questions may arise in the emergency department
setting. When in the emergency department, how should organ donation be
addressed and by whom? Should temporary organ preservation be initiated in the
setting of uncertainty regarding a patient’s wishes? To better facilitate
discussions about organ donation when they arise in emergency settings, we
propose increased coordination between organ procurement organizations and
emergency physicians to improve awareness of organ transplantation. 相似文献
614.
《Cell》2022,185(11):1860-1874.e12
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616.
K. B. Hartney 《Journal of fish biology》1996,49(6):1062-1069
Common species of kelp-bed fishes including adult blacksmith Chromis punctipinnis , adult senorita Oxyjulis californica , and sub-adult kelp bass Paralabrax clathratus were collected from two separate and isolated rocky reefs at Santa Catalina Island, California, U.S.A. where giant kelp Macrocystis pyrifera was present. After tagging, groups of fishes were either returned to their initial collection site or displaced to an alternative kelp-bed site to measure site fidelity and homing behaviour. No tagged fishes that were returned to their initial collection sites and subsequently resighted, exhibited any movement to another reef suggesting that these fishes have a limited home range, and handling during capture and tagging had no effect on site fidelity. Of fishes translocated to alternative kelp-bed sites, up to 80% of tagged senorita and 100% of tagged blacksmith that were resighted had returned to the site of their initial collection, indicating that these species are motivated and able to relocate previously utilized areas when displaced. However, when young-of-the-year and juvenile kelp bass were displaced, none were ever seen again suggesting that disruption of the relationship between a young kelp bass and its home site may influence its survival. 相似文献
617.
K. C. Ting G. A. Giacomelli P. P. Ling 《In vitro cellular & developmental biology. Plant》1992,28(1):5-10
Summary Transplanting is a necessary operation in transplant production systems. Transplanting operation is labor-intensive and automation
can reduce labor costs. Plugs are actively growing young transplants with two well-defined morphologic parts: the stem-leaf
portion and the root-growth medium portion. They may be grown in regularly situated cells on traylike containers. This regularity
makes plugs suitable for automated transplanting operations. It is, therefore, beneficial for in vitro plant propagation systems
to include plugs as intermediate products before they are delivered to the greenhouses. Flexible automation and robotics technologies
have been applied to develop a robotic workcell for transplanting plugs from plug trays to growing flats. Main components
of the workcell include a robot, an end-effector, and two conveyer belts for transporting trays and flats. The end-effector
for extracting, holding, and planting plugs is a “sliding-needles-with-sensor” gripper. The sensor signals the robot to complete
a transplanting cycle only when a plug is properly held by the gripper. Systems analysis and computer simulation were conducted
to study factors affecting workability and productivity of various workcell designs. These factors included: dimensions and
kinematics of the robot and its peripheral equipment, layout and materials flow, fullness of plug trays, and successful extraction
rate of plugs. The analysis also indicated that machine vision systems could add valuable capabilities to the workcell, such
as robot guidance and plug quality evaluation. Engineering economic analysis was performed to investigate the interaction
of workcell technical feasibility and economic viability.
Presented in the Session-in-Depth Robotics in Tissue Culture at the 1991 World Congress on Cell and Tissue Culture, Anaheim,
California, June 16–20, 1991. 相似文献