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排序方式: 共有1479条查询结果,搜索用时 31 毫秒
1.
In this study, we aimed to find out the biodegradation efficiency of some soil fungi types on herbicide acetochlor with acetochlor active material, chemical oxygen demand (COD), biochemical oxygen demand (BOD5) and total organic carbon (TOC) parameters. We also try to determine the population dynamics of these fungi via turbidity. The fungi cultures were isolated from agricultural field in in Thrace region of Turkey. Each fungi enriched in malt extract broth media and 1 mL of these enriched media was inoculated into 100 mL of acetochlor solutions that suggested for using application concantrations in agricultural field for farmers (11000 mg L?1) for sunflower and corn agriculture. Bioremediation results of acetochlor have shown different results according to the types of fungi. Our results indicate that Tolypocladium geodes and Cordyceps cicadae might be used in acetochlor bioremediation with a significant acetochlor, COD, TOC and BOD5 reduction and can be used for rehabilitation of agricultural fields or receiving environments for removal the opposite effects of acetochlor or other herbicides.  相似文献   
2.

Background

The most common headache associated with epilepsy occurs after seizure activity and is called a postictal headache. Therefore, the objective of this study was to investigate the effects of low and high doses acetylsalicylic acid (aspirin) on a penicillin-induced experimental epilepsy model.

Methods

Adult male Wistar rats (n?=?28, weighing 220?±?40?g) were used in the experiments. The rats were divided into four groups as Control, Penicillin, Aspirin 150?mg/kg, Aspirin 500?mg/kg. Seizure activity was triggered by an intracortical injection of penicillin G potassium (500?IU/2.5?μl) into the sensory motor cortex. An electrocorticogram was recorded by using conductive screw electrodes. Aspirin at the doses of 500?mg/kg and 150?mg/kg was given intraperitoneally (ip) 30?min after penicillin administration.

Results

Anticonvulsant activity appeared at the 30th and 40th min after an intracortically administered injection of penicillin in the groups given aspirin doses of 500?mg/kg (ip) and 150?mg/kg (ip) respectively. The amplitude of epileptiform activity at both doses of aspirin decreased but the difference was not statistically significant.

Conclusions

The results of the present study suggest that low and high doses of aspirin may decrease epileptiform activity in penicillin-induced epilepsy. Aspirin might be suggested for headache associated with epilepsy.  相似文献   
3.

Objectives

In Parkinson disease (PD), sarcopenia may represent the common downstream pathway that from motor and nonmotor symptoms leads to the progressive loss of resilience, frailty, and disability. Here we (1) assessed the prevalence of sarcopenia in older adults with PD using 3 different criteria, testing their agreement, and (2) evaluated the association between PD severity and sarcopenia.

Design

Cross-sectional, observation study.

Setting

Geriatric day hospital.

Participants

Older adults with idiopathic PD.

Measurements

Body composition was evaluated through dual energy x-ray absorptiometry. Handgrip strength and walking speed were measured. Sarcopenia was operationalized according to the Foundation for the National Institutes of Health, the European Working Group on Sarcopenia in Older Persons, and the International Working Group. Cohen k statistics was used to test the agreement among criteria.

Results

Among the 210 participants (mean age 73 years; 38% women), the prevalence of sarcopenia was 28.5%–40.7% in men and 17.5%–32.5% in women. The prevalence of severe sarcopenia was 16.8%–20.0% in men and 11.3%–18.8% in women. The agreement among criteria was poor. The highest agreement was obtained between the European Working Group on Sarcopenia in Older Persons (severe sarcopenia) and International Working Group criteria (k = 0.52 in men; k = 0.65 in women; P < .01 for both). Finally, severe sarcopenia was associated with PD severity (odds ratio 2.30; 95% confidence interval 1.15–4.58).

Conclusions

Sarcopenia is common in PD, with severe sarcopenia being diagnosed in 1 in every 5 patients with PD. We found a significant disagreement among the 3 criteria evaluated, in detecting sarcopenia more than in ruling it out. Finally, sarcopenia is associated with PD severity. Considering its massive prevalence, further studies should address the prognosis of sarcopenia in PD.  相似文献   
4.

Objectives

To test the association between polypharmacy and 1-year change in physical and cognitive function among nursing home (NH) residents.

Design

Longitudinal multicenter cohort study based on data from the Services and Health for Elderly in Long TERm care (SHELTER) study.

Setting

NH in Europe (n = 50) and Israel (n = 7).

Participants

3234 NH older residents.

Measurements

Participants were assessed through the interRAI long-term care facility instrument. Polypharmacy was defined as the concurrent use of 5 to 9 drugs and excessive polypharmacy as the use of ≥10 drugs. Cognitive function was assessed through the Cognitive Performance Scale (CPS). Functional status was evaluated through the Activities of Daily Living (ADL) Hierarchy scale. The change in CPS and ADL score, based on repeated assessments, was the outcome, and their association with polypharmacy was modeled via linear mixed models. The interaction between polypharmacy and time was reported [beta and 95% confidence intervals (95% CIs)].

Results

A total of 1630 (50%) residents presented with polypharmacy and 781 (24%) excessive polypharmacy. After adjusting for potential confounders, residents on polypharmacy (beta 0.10, 95% CI 0.01-0.20) and those on excessive polypharmacy (beta 0.13, 95% CI 0.01-0.24) had a significantly higher decline in CPS score compared to those using <5 drugs. No statistically (P > .05) significant change according to polypharmacy status was shown for ADL score.

Conclusions

Polypharmacy is highly prevalent among older NH residents and, over 1 year, it is associated with worsening cognitive function but not functional decline.  相似文献   
5.
Preoperative assessment of the recipient vessels in free flap surgery directly affects the success rate of the operation by determining the flap type, pedicle length, orientation to the recipient site, and need for a vein graft. For this purpose, conventional angiographic methods are still being used with some disadvantages. The aims of this study were to evaluate the potential success of multislice computed tomography angiography in assessment of the recipient vessels before free flap surgery and to reveal if this may be an alternative to conventional angiography. The study was bilaterally carried out in 33 outpatients using a 16-detector spiral computed tomography scanner. In images of multiplanar reconstructions, maximum intensity projections, and three-dimensional volume renderings, the external carotid artery and its main branches were evaluated in terms of availability; patency, stenosis, or occlusion; maximal and minimal external diameters through their traces; variations involving ramification from another main vessel; and abnormal course. The superior thyroid artery was absent bilaterally in two patients (6.06%). The external carotid artery was stenotic on one side in two patients (6.06%) and on each side in one (3.03%). All the remaining vessels appeared without stenosis, occlusion, or variation. We think that multislice computed tomography angiography can provide detailed information about vascular structures and the remaining anatomic structures and their relationships with the recipient vessels. Therefore, multislice computed tomography angiography, as a less invasive vascular imaging method, can be a useful tool before planning free flap surgery.  相似文献   
6.
Reconstruction of cartilage and bone defects has always been a challenging problem for the surgeon. Basic elements that are responsible for the repair process of these tissues are periost and perichondrium. Although several methods for the use of periost and perichondrium are proposed in the literature, the osteogenic and chondrogenic capacities of these tissues were shown to be the most important factor for a successful outcome. Bone and cartilage formation in acellular dermal matrix (ADM) prefabricated with periost and perichondrium was studied in 20 New Zealand rabbits. Morphologic and histologic evaluation and comparison of the newly formed tissues were evaluated. Four rabbits were excluded from the study because of infection, and specimens were obtained at 4, 6, 8, and 12 weeks after the study began from the remaining 16 rabbits. A gradual increase in bone and cartilage tissue formation through the 4th to 12th weeks was documented by reason of perichondrium and periost activation infiltrating into acellular dermal allografts. In view of the data obtained, it was concluded that periost or perichondrium prefabricated over ADM may be an alternative technique of cartilage and bone formation that may provide adequate tissue with elastic and osteo- and chondroconductive properties for the reconstruction of challenging defects.  相似文献   
7.
The aim of this study is to assess the biomechanical advantage of adding strut allograft and the effect of its position on the construct in Vancouver type B1 fractures. Fifteen forth-generation synthetic femurs were used and created a fracture model at the tip of prosthesis, and subsequently fixated with a lateral plate only, lateral plate and medial strut, lateral plate and anterior strut. Rotational and axial tests were performed. In all loading tests, the plate with medial strut group was stiffer than the other constructs and had higher failure load values and had less displacement in the fracture site. A combination of a plate with a medial strut allograft provides more mechanical stability on periprosthetic femoral fractures near the tip of a total hip arthroplasty.  相似文献   
8.

Background and purpose

Avascular necrosis (AVN) is a major cause of disability after treatment of developmental dysplasia of the hip (DDH), leading to femoral head deformity, acetabular dysplasia, and osteoarthritis in adult life. Type-II AVN is characterized by retarded growth in the lateral aspect of the physis or by premature lateral fusion, which produces a valgus deformity of the head on the neck of the femur. We investigated the effect of medial percutaneous hemi-epiphysiodesis as a novel technique in the treatment of late-diagnosed type-II AVN.

Patients and methods

9 patients (11 hips) with a diagnosis of type-II AVN who underwent medial percutaneous hemi-epiphysiodesis after the surgical treatment for DDH were included in the study. 10 patients (12 hips) with the same diagnosis but who did not undergo hemi-epiphysodesis were chosen as a control group. Preoperative and postoperative articulotrochanteric distances, head-shaft angles, CE (center-edge) angles, and physeal inclination angles were measured. The treatment group underwent medial hemi-epiphysodesis at a mean age of 8 years. The mean ages of the treatment group and the control group at final follow-up were 14 and 12 years respectively. The mean duration of follow-up was 5.7 years in the treatment group and 8.3 years in the control group.

Results

Preoperative articulotrochanteric distance, head-shaft angle, and functional outcome at the final follow-up assessment were similar in the 2 groups. However, preoperative and postoperative CE angles and physeal inclination angles differed significantly in the treatment group (p < 0.05). The final epiphyseal valgus angles were better in the treatment group than in the control group (p = 0.05). The treatment group improved after the operation.

Interpretation

Medial percutaneous epiphysiodesis performed through a mini-incision under fluoroscopic control is a worthwhile modality in terms of changing the valgus tilt of the femoral head.Avascular necrosis (AVN) of the proximal femoral epiphysis is an iatrogenic complication of treatment for developmental dysplasia of the hip (DDH) (Danielsson 2000, Dhar 2003, Domalzki and Synder 2004, Roposch et al.2013). A late abnormality that may be the manifestation of the lateral portion of the capital femoral growth plate in type-II AVN alters the morphology of hip joint (Kalamchi and MacEwen 1980). When a progressive valgus deformity occurs in a patient with type-II AVN, problems associated with hip dysplasia may follow (Siffert 1981, Campbell and Tarlos 1990, Kim et al. 2000, Wu et al. 2010, Herring 2014). Due to inadequate coverage, reduced contact area between acetabulum and femoral head leads to early secondary osteoarthritis (Aronson 1986, Inoue et al. 2000, Herring 2014).The treatment decision for type-II AVN is challenging. Procedures such as varus femoral osteotomy and redirectional acetabular osteotomy have been used with a view to preventing future degenerative disease. However, these procedures are technically difficult and may result in serious complications (Siebenrock et al. 2013). On the other hand, as the main pathology is the growth disturbance at the lateral aspect of the femoral head, some form of arrest of the medial portion of the growth plate may be more logical in the treatment of type-II AVN (Herring 2014). We analyzed the radiographic and clinical outcomes of 11 hips in 9 patients with late-diagnosed type-II AVN who underwent percutaneous hemi-epiphysiodesis of the femoral head.  相似文献   
9.
International Urology and Nephrology - We aimed to assess an “Immunological Profile (IP)” including CD8+ and FoxP3+ T lymphocytes for renal cell carcinoma (RCC) to evaluate its effects...  相似文献   
10.
This study compared the safety and efficacy of the on-demand (OD) use of sertraline (50 mg), sertraline (100 mg) and dapoxetine (30 mg), and the daily use of sertraline (50 mg) in the treatment of patients with premature ejaculation (PE). This prospective randomised study involved 120 lifelong PE patients (intravaginal ejaculatory latency time [IELT]: <1 min; Arabic Index of Premature Ejaculation [AIPE] score: < 30) without secondary causes of PE, identified between March 2018 and May 2020. Patients were divided into 4 groups (30 patients per group) and treated for 8 weeks. Assessments were conducted using the AIPE form as a diagnostic tool. Sertraline (50 mg, daily; 196.7 ± 115.5 s) and sertraline (100 mg, OD; 173.3 ± 97.0 s) had similar IELT and AIPE scores. The latter groups had better results in comparison with sertraline (50 mg, OD; 100.5 ± 54.4 s) and dapoxetine (93.7 ± 53.5 s; p < 0.01). Sertraline (100 mg, OD) had a similar efficacy to that of sertraline (50 mg, daily) and was more effective than sertraline (50 mg, OD) and dapoxetine (30 mg, OD). Sertraline (100 mg, OD) can be considered in the treatment of lifelong PE treatment, having tolerable side effects.  相似文献   
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