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81.
Maiko Kawaguchi Kaori Morohoshi Erina Saita Rie Yanagisawa Gen Watanabe Hirohisa Takano Masatoshi Morita Hideki Imai Kazuyoshi Taya Toshiyuki Himi 《Endocrine》2008,33(3):277-284
Pentachlorophenol (PCP), a component of biocides and a contaminant in diverse tissue samples from humans from various geographic
areas, disrupts regulatory effects of thyroid hormones. Here we examined the effects of developmental exposure of rats to
PCP on various aspects of brain development, male reproductive function, and adrenal function, all of which are under thyroid
hormones regulation. PCP was administered to dams and their offspring via drinking water (6.6 mg l−1) during gestation and lactation. Tissue samples were obtained from dams, 3-week-old weanling pups, and 12-week-old pups.
Gene expressions of thyroid hormone receptor β1 and synapsin I, factors that promote brain growth, was increased in the cerebral cortex of PCP-treated weanling females, whereas plasma
concentrations of total thyroxine were decreased in dams and weanling pups, and plasma thyroid-stimulating hormone concentrations
were higher in PCP-treated weanling males. PCP caused a decrease in plasma corticosterone concentrations in 12-week-old female
rats, but not in male rats or weanling females. PCP-treated male pups had significantly increased testis weight at 12 week
of age. No overt signs of toxicity were noted throughout this study. Our results show that PCP exposure during development
causes thyroid function vulnerability, testicular hypertrophy in adults, and aberrations of brain gene expression. 相似文献
82.
Ueno H Yamada Y Watanabe R Mukai E Hosokawa M Takahashi A Hamasaki A Fujiwara H Toyokuni S Yamaguchi M Takeda J Seino Y 《Pancreas》2005,31(2):126-131
The neural precursor cell-specific marker nestin is expressed in fetal and adult pancreas, but its role is not fully understood. Using nestin-enhanced green fluorescent protein (EGFP) transgenic mice and fluorescence activated cell sorter, we characterized nestin-positive cells in adult mice pancreas. EGFP mRNA- and protein-positive cells expressed amylase, a pancreatic exocrine marker. Interestingly, EGFP mRNA-negative and protein-positive cells expressed insulin, glucagon, somatostatin and pancreatic polypeptide, pancreatic endocrine markers. These findings demonstrate that nestin-positive cells comprise a portion of pancreatic exocrine cells and suggest that they can be differentiated into pancreatic endocrine cells. 相似文献
83.
Kayano Daiki Wakabayashi Hiroshi Nakajima Kenichi Kuroda Rie Watanabe Satoru Inaki Anri Toratani Ayane Akatani Norihito Yamase Takafumi Kunita Yuji Hiromasa Tomo Takata Aki Mori Hiroshi Saito Shintaro Araki Raita Taki Junichi Kinuya Seigo 《Annals of nuclear medicine》2020,34(6):397-406
Annals of Nuclear Medicine - The aim of the study was to investigate the outcomes and prognostic factors of high-dose 131I-metaiodobenzylguanidine (131I-MIBG) therapy in patients with refractory or... 相似文献
84.
Masahiro Ashizawa Yu Akahoshi Hirofumi Nakano Tomotaka Ugai Hidenori Wada Ryoko Yamasaki Yuko Ishihara Koji Kawamura Kana Sakamoto Miki Sato Kiriko Terasako Shun-ichi Kimura Misato Kikuchi Hideki Nakasone Shinichi Kako Junya Kanda Rie Yamazaki Aki Tanihara Junji Nishida Yoshinobu Kanda 《International journal of hematology》2014,99(3):311-317
Conditioning regimens consisting of reduced-dose cyclophosphamide (CY) and fludarabine (FDR) have been investigated for use in allogeneic hematopoietic stem cell transplantation (allo-HSCT) in patients with aplastic anemia to reduce the toxicities associated with CY. However, the ideal dose of CY has not been identified. In addition, little information is available regarding donor cell chimerism after allo-HSCT with these regimens. Therefore, we retrospectively analyzed 13 patients who underwent allo-HSCT with half-dose CY (100 mg/kg in total), FDR, and anti-thymocyte globulin at total doses of 2.5–10 mg/kg at our center. All the patients except one, who died due to encephalopathy on day 20, achieved neutrophil engraftment a median of 18.5 days after HSCT with complete donor-type chimerism. Two patients who received a graft from an HLA-matched donor subsequently developed mixed chimerism (MC) associated with transfusion-dependent cytopenia. One became transfusion-independent after donor lymphocyte infusion, but continues to exhibit MC. The other regained complete donor-type chimerism after the cessation of cyclosporine, but remains transfusion-dependent. These findings suggest that a conditioning regimen with half-dose CY and FDR is effective for achieving neutrophil engraftment and complete donor-type chimerism. However, subsequent MC may be observed, especially after HLA-matched HSCT. 相似文献
85.
86.
Shigeo Horinaka Hiroshi YagiKimihiko Ishimura Hiromitchi FukushimaYoshimasa Shibata Rie SugawaraToshihiko Ishimitsu 《Atherosclerosis》2014
Background
The cardio-ankle vascular index (CAVI) is an arterial stiffness index based on the stiffness parameter β, which is essentially independent of blood pressure. The objective of this study was to determine whether CAVI correlates with the regional stiffness parameter β and pulse wave velocity (PWV) in the thoracic aorta calculated from ECG-gated multi-detector row computed tomography (MDCT).Methods and results
Forty-nine patients who underwent coronary MDCT for suspicious coronary artery disease were recruited. The largest and smallest vessel luminal cross-sectional areas of the thoracic aorta were measured from MDCT images to calculate PWV and stiffness parameter β of the ascending and descending aorta. CAVI was also measured by VaSera VS-1000.In univariate analysis, CAVI significantly correlated with regional stiffness parameter β and PWV, which was influenced by the inevitable part of the aging process in the ascending (r = 0.485, P < 0.001; r = 0.483, P < 0.001) and descending aortas (r = 0.304, P = 0.034; r = 0.327, P = 0.022), respectively. The regional stiffness parameter β did not correlate with systolic blood pressure (SBP), although the PWV correlated with SBP. In multivariate analysis, CAVI independently correlated with the stiffness parameter β, but not with the PWV.Conclusion
These data suggest that CAVI, which correlated with stiffness parameter β in the thoracic aorta, has a potential role in evaluating integrated arterial stiffness including that of the central aorta. 相似文献87.
Daisuke Toyoda Rie Yasumura Mitsue Fukuda Ryoichi Ochiai Yoshifumi Kotake 《Journal of anesthesia》2014,28(3):463-466
The purpose of this prospective study was to evaluate the accuracy and trending ability of a four-wavelength pulse-total hemoglobinometer that continuously and noninvasively measures hemoglobin in surgical patients. With IRB approval and informed consent, spectrophotometric hemoglobin (SpHb) was measured with a pulse-total hemoglobinometer manufactured by Nihon Kohden Corp (Tokyo, Japan) and compared to the CO-oximeter equipped with blood gas analyzer. Two hundred twenty-five samples from 56 subjects underwent analysis. Bland–Altman analysis revealed that the bias ± precision of the current technology was 0.0 ± 1.4 g/dl and ?0.2 ± 1.3 g/dl for total samples and samples with 8 < Hb < 11 g/dl, respectively. The percentages of samples with intermediate risk of therapeutic error in error grid analysis and the concordance rate of 4-quadrant trending assay was 17 % and 77 %, respectively. The Cohen kappa statistic for Hb < 10 g/dl was 0.38, suggesting that the agreement between SpHb and CO-oximeter-derived Hb was fair. Collectively, wide limits of agreement, especially at the critical level of hemoglobin, and less than moderate agreement against CO-oximeter-derived hemoglobin preclude the use of the pulse-total hemoglobinometer as a decision-making tool for transfusion. 相似文献
88.
89.
Yusuke Matsuya Yosuke Ohtsubo Kaori Tsutsumi Kohei Sasaki Rie Yamazaki Hiroyuki Date 《Journal of radiation research》2014,55(3):484-493
The microdosimetric-kinetic (MK) model is one of the models that can describe the fraction of cells surviving after exposure to ionizing radiation. In the MK model, there are specific parameters, k and yD, where k is an inherent parameter to represent the number of potentially lethal lesions (PLLs) and yD indicates the dose-mean lineal energy in keV/μm. Assuming the PLLs to be DNA double-strand breaks (DSBs), the rate equations are derived for evaluating the DSB number in the cell nucleus. In this study, we estimated the ratio of DSBs for two types of photon irradiation (6 MV and 200 kVp X-rays) in Chinese hamster ovary (CHO-K1) cells and human non-small cell lung cancer (H1299) cells by observing the surviving fraction. The estimated ratio was then compared with the ratio of γ-H2AX foci using immunofluorescent staining. For making a comparison of the number of DSBs among a variety of radiation energy cases, we next utilized the survival data in the literature for both cells exposed to other photon types, such as 60Co γ-rays, 137Cs γ-rays and 100 kVp X-rays. The ratio of DSBs based on the MK model with conventional data was consistent with the ratio of γ-H2AX foci numbers, confirming that the γ-H2AX focus is indicative of DSBs. It was also shown that the larger yD is, the larger the DSB number is. These results suggest that k and yD represent the characteristics of the surviving fraction and the biological effects for photon irradiation. 相似文献
90.
Rie Sakai Günther Fink Ichiro Kawachi 《Journal of epidemiology / Japan Epidemiological Association》2014,24(3):239-249