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Schwannoma of the trachea; a new resection technique 总被引:1,自引:0,他引:1
Tumors of the trachea are rare, especially schwannoma. We diagnosed a 27-year-old man with schwannoma of the trachea after he was admitted to our hospital with complaints of progressive dyspnea and wheezing. He was treated as having bronchial asthma initially, but his signs and symptoms did not improve with conventional therapy. Flexible fiberscopy revealed the presence of a submucosal tumor in the subglottic area. Tracheal tomography, computed tomography (CT) and magnetic resonance imaging (MRI) revealed the presence of a mass in the trachea that extended from the cricoid cartilage level to the second tracheal ring. After tracheostomy, we removed the tumor from a tracheostoma upwards to the larynx without a laryngofissure, using forceps and scissors usually used for laryngomicrosurgery and endoscopes usually used for sinus surgery. No complications developed during or after the procedure. To our knowledge, this is the first report of the removal of a tracheal schwannoma by this technique. 相似文献
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Kazunari Karakida Takayuki Aoki Yoshihide Ota Hiroshi Yamazaki Mitsunobu Otsuru Miho Takahashi Haruo Sakamoto Muneo Miyasaka 《Journal of infection and chemotherapy》2010,16(5):334-339
The purpose of this study was to elucidate the risk factors for surgical-site infection (SSI) in oral cancer surgery with
microvascular free-flap reconstructions and to propose appropriate SSI prevention. There were 276 patients who underwent oral
cancer surgery with microvascular free-flap reconstructions at the Department of Oral and Maxillo-facial Surgery of Tokai
University Hospital. The following variables were assessed as risk factors for SSIs: preoperative variables, including age,
sex, body mass index, American Society of Anesthesiologist’s (ASA) score, debilitating comorbidities, smoking, alcohol consumption,
and Union Internationale Contre le Cancer Tumor Node Metastasis (UICC-TNM) classification; and operative variables, including
duration of surgery, amount of blood loss, quantity of blood transfusion, tracheostomy, area of neck dissection, and previous
chemotherapy. Statistical analysis was conducted to determine whether these factors constitute risks for SSI. Total overall
SSI rate was 40.6% (112/276). When the occurrence of SSI was compared with the variables, ASA score (P = 0.036), T stage (P = 0.013), duration of surgery (P < 0.001), blood loss (P = 0.001), blood transfusion (P = 0.01), and area of neck dissection (P = 0.009) showed statistical significance. Analysis of these variables with a logistic regression model yielded ASA score
and duration of surgery as significant factors. There was a tendency for blood loss and duration of surgery to increase in
patients with a high T stage. A high T stage not only broadens the resection area and increases surgical invasiveness, it
also increases susceptibility to dead space after microvascular reconstruction for oral cancer. Particular care in treating
the wound should be taken in surgical patients with high T-stage scores. The occurrence of SSI is of particular concern in
oral cancer surgery in patients with high ASA scores. 相似文献
75.
Saeki T Sano M Komoike Y Sonoo H Honjyo H Ochiai K Kobayashi T Aogi K Sato N Sawai S Miyoshi Y Miyoshi Y Takeuchi M Takashima S 《International journal of clinical oncology / Japan Society of Clinical Oncology》2008,13(1):8-11
Hormone replacement therapy (HRT) has been considered one of the main risk factors for breast cancer. Studies demonstrating
the relationship between HRT and breast cancer incidence were conducted in Western countries and the target populations were
mainly Caucasians. Since the Women’s Health Initiatives demonstrated that HRT increased the risk of breast cancer with statistical
significance, the number of HRT users in the United States has dramatically decreased. A recent case-control study has investigated
the relationship between HRT and breast cancer in Japan, and here we review the results of this study to compare any discrepancy
in breast cancer risk between Japanese and Western populations. For this case-control study, at seven institutions, women
between the ages of 45 through 69 years, with histologically confirmed breast cancer, were selected as the case group. An
age-adjusted control group was selected, using hospital-based data, including records of those screened for lung, gastrointestinal,
and gynecological cancer. Questionnaires were administered, and items questioned included various factors related to the incidence
of breast cancer: age at diagnosis, body mass index (BMI), smoking habit, age at menopause, birth history, number of births,
number of children, history of breast feeding, familial background, and menopausal status. In total, 6183 samples (98.4% of
the estimated samples) were put into the database. Data from 276 samples were excluded due to ineligibility. Finally, 5861
samples (3434 cases and 2427 controls) were analyzed. In 3316 cases, 164 (5.0%) patients received hormone-replacement therapy
(HRT); on the other hand, 253 (10.7%) of 2355 controls received HRT. The odds ratio was 0.432 (95% confidence intervals [CI],
0.352–0.53), and there was a significantly negative correlation between HRT use and breast cancer. The risk factors in Japanese
women showed similar profiles to those in women in Western countries. However, we did find some different profiles of breast
cancer risk in the Japanese women. Changing of lifestyle may increase breast cancer risk in Japan. 相似文献
76.
Isamu Ozaki Chun Yu Jin Yasumi Suzuki Masayuki Baba Muneo Matsunaga Isao Hashimoto 《Clinical neurophysiology》2004,115(7):1592-1604
OBJECTIVE: To study early cognitive processes and hemispheric differences in the primary auditory cortex during selective attention. METHODS: We measured auditory evoked magnetic fields (AEFs) to 400 and 4000 Hz tone pips that were randomly presented at the right or left ear. Subjects paid attention to target stimuli during pitch (high or low) or laterality (left or right) discrimination tasks. In the control session, 400 or 4000 Hz tone alone was presented at the left or right ear. We calculated the location and strength of N100m dipole for 400 and 4000 Hz tones, based on the AEFs obtained from the hemisphere contralateral to the stimulated ear. RESULTS: N100m amplitude increased in both hemispheres in pitch or laterality discriminating conditions. N100m latency also shortened during selective attention. The N100m dipole distance between 400 and 4000 Hz tones was enlarged, especially in the right auditory cortex during pitch discrimination task, but was unchanged during the laterality discrimination task. CONCLUSIONS: We conclude that these dynamic changes in the N100m dipole reflect short-term plastic changes in the primary auditory cortex, supporting early selection models. SIGNIFICANCE: This work is the first to disclose short-term plastic changes during pitch discrimination in the human auditory cortex based on the analysis of magnetoencephalography. 相似文献
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Risk factors for encapsulating peritoneal sclerosis: Analysis of a 36‐year experience in a University Hospital
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