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21.
The aim of this study was to examine the inhibitory responses in bilateral masseter and temporalis muscle activity when electrical stimulation with short or long duration was applied to six oro-facial locations. The exteroceptive suppression period (ES2) and inhibitory responses were recorded in the surface electromyogram (EMG) of bilateral masseter and temporalis muscles in 16 healthy subjects. Two stimulus durations (1 ms single pulse and 450 ms pulse train) adjusted to a perceived intensity of 7 (distinct painful) on a 0-10 Numerical Rating Scale (NRS) were applied to the following six oro-facial locations on the right side while the subject was biting at 50% of the maximal voluntary contraction: masseter muscle, temporalis muscle, temporomandibular joint, infraorbital nerve, supraorbital nerve, and mental nerve. The stimulus intensity required to reach an NRS score of 7 was significantly lower for 450 ms train stimuli than for 1 ms single stimuli (P<0·001). There were no significant differences in the magnitude of ES2 suppression among the six different locations (P>0·876) for the 1 ms single stimuli. There were significant decreases in Root-Mean-Square-EMG values in the 400-500 ms post-stimulus epoch compared with the pre-stimulus epoch (P<0·023) for 450 ms train stimuli, but there were no significant differences in the magnitude of inhibition among the six different locations (P<0·893). Short- and long-lasting electrical stimulation of various oro-facial locations induces similar bilateral inhibitory effects in the jaw-closing muscles but with different propensity which may reflect the somatotopic organisation of these responses. 相似文献
22.
Summary Inhibitory reflexes during voluntary contractions are well described; however, few studies have attempted to use such reflex-mechanisms to modulate electromyographic (EMG) activity in jaw-closing muscles during sleep. The aim was to apply a new intelligent biofeedback device (Grindcare®) using electrical pulses to inhibit EMG activity in the temporalis muscle during sleep. Fourteen volunteers participated who were aware of jaw-clenching activity as indicated by complaints from sleep partner, soreness or pain in the jaw-muscle upon awakening and tooth wear facets. The EMG activity was recorded from the temporalis muscle, online analysed and the frequency content determined using a signal recognition algorithm. Based on specific individual parameters for pattern recognition, an electrical square-wave pulse train, which was adjusted to a clear, but non-painful intensity (range 1–7 mA) was applied through the EMG electrodes, if jaw-clenching activity was detected. All volunteers had baseline EMG recordings for five to seven consecutive nights, followed by 3-weeks EMG recordings with the feedback turned on, 2 weeks without the feedback and finally 3 weeks with the biofeedback on. There were no session effects on the average duration of sleep hours ( P = 0·626). The number of EMG episodes/hour sleep was significantly reduced during the two sessions with biofeedback (54 ± 14%; 55 ± 17%, P < 0·001) compared with baseline EMG activity and the session without biofeedback. The present study suggests that biofeedback with electrical pulses does not cause major disruption in sleep and is associated with pronounced reduction in temporalis EMG activity during sleep. 相似文献
23.
Svensson P Jadidi F Arima T Baad-Hansen L Sessle BJ 《Journal of oral rehabilitation》2008,35(7):524-547
A still commonly held view in the literature and clinical practice is that bruxism causes pain because of overloading of the musculoskeletal tissue and craniofacial pain, on the other hand, triggers more bruxism. Furthermore, it is often believed that there is a dose-response gradient so that more bruxism (intensity, duration) leads to more overloading and pain. Provided the existence of efficient techniques to treat bruxism, it would be straightforward in such a simple system to target bruxism as the cause of pain and hence treat the pain. Of course, human biological systems are much more complex and therefore, it is no surprise that the relationship between bruxism and pain is far from being simple or even linear. Indeed, there are unexpected relationships, which complicate the establishment of adequate explanatory models. Part of the reason is the complexity of the bruxism in itself, which presents significant challenges related to operationalized criteria and diagnostic tools and underlying pathophysiology issues, which have been dealt with in other reviews in this issue. However, another important reason is the multifaceted nature of craniofacial pain. This review will address our current understanding of classification issues, epidemiology and neurobiological mechanisms of craniofacial pain. Experimental models of bruxism may help to further the understanding of the relationship between craniofacial pain and bruxism in addition to insights from intervention studies. The review will enable clinicians to understand the reasons why simple cause-effect relationships between bruxism and craniofacial pain are inadequate and the current implications for management of craniofacial pain. 相似文献
24.
Pharmacodynamics,pharmacokinetics, safety and tolerability of the novel dual glucose‐dependent insulinotropic polypeptide/glucagon‐like peptide‐1 agonist RG7697 after single subcutaneous administration in healthy subjects 下载免费PDF全文
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26.
Miyazaki S Hocini M Linton N Jadidi AS Nault I Wright M Forclaz A Rivard L Liu X Shah A Xhaet O Derval N Sacher F Jaïs P Haïssaguerre M 《Journal of cardiovascular electrophysiology》2011,22(7):739-745
LA Linear Ablation With Multielectrode Catheter. Introduction: Creating complete linear block with point‐by‐point ablation is challenging in the left atrium (LA). The purpose of this study was to evaluate the efficacy of LA linear ablation using a hexapolar linear multielectrode mapping/ablation catheter. Methods and Results: Seventeen patients (age 57 ± 10, 14 male, 6 paroxysmal AF (PAF)) were studied and underwent linear ablation at the mitral isthmus (MI) and LA roof. Ablation was performed with 90 second, 60 °C applications of duty‐cycled bipolar/unipolar radiofrequency in a 1:1 ratio simultaneously at all selected electrode pairs. The result could not be evaluated in 2 patients because AF persisted despite cardioversion. Roof line block was confirmed in 9 of 15 (60%) patients. The mean number of applications and the procedural time with and without block was 5.4 ± 2.4 and 4.5 ± 2.2 applications, and 15 ± 8 and 13 ± 7 minutes. MI block was confirmed in 4 of 15 (27%) patients. The mean number of RF applications with and without block was 5.3 ± 2.2 and 9.9 ± 4.4 applications, and the procedural time was 20 ± 9 and 27 ± 10 minutes, respectively. For patients with underlying persistent AF, power was lower than those with PAF but improved when ablation was performed in sinus rhythm. Char was observed in 2 cases; however, no procedure‐related complications were observed. Conclusions: In our initial experience, a linear multielectrode catheter using duty‐cycled bipolar and unipolar RF energy was inferior to conventional single point irrigated ablation in achieving LA linear block. However, successful linear block was obtained within a short period of time, when it was achieved . (J Cardiovasc Electrophysiol, Vol. 22, pp. 739‐745, July 2011) 相似文献
27.
Ali Jadidi Masoud Khodaveisi Efat Sadeghian Masoud Fallahi-Khoshknab 《Ethiopian journal of health sciences》2021,31(3):589
BackgroundSpiritual health is one of the important dimensions of the elderly''s health, which plays an important role in other dimensions of their health. This study aimed to explain the process of spiritual health of the elderly living in nursing homes.MethodsThis grounded theory study was conducted in 4 nursing homes in the city of Arak Iran between October 2019 and September 2020. The participants were 24 elderly people living in nursing homes, two health care providers, one nurse and one family member, first selected through purposive sampling and then, through theoretical sampling. The data were collected through semi-structured interviews and field notes. All the interviews were transcribed verbatim and analyzed based on Strauss and Corbin approach (2008).ResultsSix main categories were identified, including helplessness, inefficient supportive environment, spiritual distress, seeking support, relative improvement of spiritual health and factors affecting spiritual health, each of which explains a part of the whole process of spiritual health of the elderly living in nursing homes.ConclusionSupporting the elderly living in nursing homes is necessary in order to meet their spiritual needs and preserve and promote their spiritual health. 相似文献
28.
Zoraida Moreno-Weidmann MD Björn Müller-Edenborn MD Amir S. Jadidi MD Victor Bazan-Gelizo MD Juan Chen MD Chan-il Park MD Hari Vivekanantham MD Enrique Rodriguez-Font MD Concepción Alonso-Martín MD José M. Guerra MD Bieito Campos-García MD Hildemari Espinosa-Viamonte MD Stéphane Combes MD Jean-Paul Albenque MD Martin Eichenlaub MD Benoit Guy-Moyat MD Luc de Roy MD Pascal Defaye MD Serge Boveda MD Thomas Arentz MD Xavier Viñolas MD 《Journal of cardiovascular electrophysiology》2021,32(6):1584-1593
29.
MK Nogourani M Janghorbani P Khadem Z Jadidi S Jalali 《Journal of applied oral science : revista FOB》2012,20(3):352-356