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1.
目的探究宫腔粘连分离术(TCRA)后患者接受IVF治疗的活产率及其影响因素。方法选择2014年1月至2019年12月于山东大学附属生殖医院行TCRA手术治疗后接受IVF助孕的635例宫腔粘连(IUA)患者。随访其妊娠结局,并分析可能影响活产率的因素。结果TCRA术后患者行鲜胚移植的活产率为36.7%。年龄(OR=0.930,P<0.001)、AFS评分(OR=0.898,P=0.035)、移植胚胎数(OR=1.875,P=0.001)、促性腺激素(Gn)启动量(OR=0.994,P=0.001)是活产率的独立影响因素。结论年龄、AFS评分、移植胚胎数、Gn启动量可能是活产率的独立影响因素。对于TCRA术后准备接受IVF鲜胚移植的患者,医生应根据以上因素制定个体化治疗方案。 相似文献
2.
《Drug discovery today》2022,27(1):82-101
WNT/β-catenin signaling orchestrates various physiological processes, including embryonic development, growth, tissue homeostasis, and regeneration. Abnormal WNT/β-catenin signaling is associated with various cancers and its inhibition has shown effective antitumor responses. In this review, we discuss the pathway, potential targets for the development of WNT/β-catenin inhibitors, available inhibitors, and their specific molecular interactions with the target proteins. We also discuss inhibitors that are in clinical trials and describe potential new avenues for therapeutically targeting the WNT/β-catenin pathway. Furthermore, we introduce emerging strategies, including artificial intelligence (AI)-assisted tools and technology-based actionable approaches, to translate WNT/β-catenin inhibitors to the clinic for cancer therapy. 相似文献
3.
Mixed lineage leukemia 1(MLL1)是组蛋白甲基转移酶SET家族的成员之一。MLL1与WDR5、RbBP5、Ash2L和DPY-30组成MLL1甲基转移酶复合物调控组蛋白H3的第4位赖氨酸的甲基化水平,对造血系统的发育和血细胞的更新至关重要。部分白血病患者体内存在因MLL1基因易位而产生的致癌蛋白——MLL1融合蛋白,MLL1融合蛋白在发挥其致癌作用时需要功能完整的MLL1酶复合物,故靶向MLL1-WDR5的蛋白-蛋白相互作用成为治疗MLL1融合型白血病的潜在策略。本文对MLL1-WDR5蛋白-蛋白相互作用的生物学机制、结构信息以及抑制剂进行了系统的总结,并结合已报道数据对该领域进行了展望,以期为后续研究提供参考。 相似文献
4.
目的 建立稳定的宫腔粘连(IUA)病理性再生动物实验模型。方法 将30只雌性SD大鼠随机分为实验组和对照组, 每组各15只。实验组通过自制2 mm直径刮匙分别对动情期大鼠的左、右侧子宫内膜进行轻度、重度机械损伤并设为轻度机械损伤组、重度机械损伤组;对照组大鼠开腹后不做子宫内膜损伤处理, 进行假手术对照。分别于术后0 h、24 h、72 h、5 d、7 d从每组随机选取3只大鼠取出双侧子宫行快速冰冻切片, 分别进行子宫内膜细胞中主要组织相容性复合体Ⅱ类分子(MHCⅡ)、5-溴脱氧尿苷(BrdU)免疫组织化学染色, 观察术后7 d不同大鼠内膜腺体情况以及术后不同时期不同机械损伤程度的大鼠子宫内膜组织炎性反应及子宫内膜组织增生修复变化。结果 轻度机械损伤组术后7 d可见少量红染含BrdU的细胞及蓝染的MHCⅡ细胞, 子宫内膜基本修复, 轻度炎症反应存在;重度机械损伤组术后7 d未见腺体或腺体数目极少, 未见明显红染含BrdU的细胞, 可见少许蓝染的MHCⅡ细胞、轻度炎症反应、内膜组织纤维化, 局部管腔闭合, 出现粘连。与对照组相比, 术后7 d大鼠子宫内膜腺体数目随着子宫内膜机械性受损伤程度增加而相应减少(P < 0.001)。结论 采用切开缝合子宫内膜机械损伤法可以成功建立大鼠IUA模型。大鼠子宫内膜轻度机械损伤后可以再生达到基本修复水平, 而重度机械损伤后子宫内膜组织无法达到基本修复, 且出现组织纤维化导致IUA。 相似文献
5.
《Saudi Dental Journal》2022,34(7):565-571
PurposeThis study aimed to evaluate the neuroprotective ability of the conditioned medium of stem cells from human exfoliated deciduous teeth (CM-SHED) to prevent glutamate-induced apoptosis of neural progenitors.Materials and methodsNeural progenitors were isolated from two-day-old rat brains, and the conditioned medium was obtained from a mesenchymal stem cell SHED. Four groups were examined: neural progenitor cells cultured in neurobasal medium with (N + ) and without (N-) glutamate and glycine, and neural progenitor cells cultured in CM-SHED with (K + ) and without (K-) glutamate and glycine.ResultsThe expression of GABA A1 receptor (GABAAR1) messenger RNA (mRNA) in neural progenitor measured by real-time quantitative PCR. GABA contents were measured by enzyme-linked immunosorbent assay, whereas the apoptosis markers caspase-3 and 7-aminoactinomycin D were analysed with a Muse® cell analyzer. The viability of neural progenitor cells in the K + group (78.05 %) was higher than the control group N- (73.22 %) and lower in the N + group (68.90 %) than in the control group. The K + group showed the highest GABA content, which significantly differed from that in the other groups, whereas the lowest content was observed in the N + group. The expression level of GABAAR1 mRNA in the K + group was the highest compared to that in the other groups. CM-SHED potently protected the neural progenitors from apoptosis.ConclusionsCM-SHED may effectively prevent glutamate-induced apoptosis of neural progenitors. 相似文献
6.
7.
Tobias Hüppe Sascha Kreuer Hinnerk Wulf Dennik Freitag Martin Seidel Tobias Teucke Felix Maurer Andreas Kirschbaum Tilo Koch Frank Langer Thomas Volk Carsten Feldmann 《Acta anaesthesiologica Scandinavica》2023,67(4):455-461
Background
Volatile propofol can be measured in exhaled air and correlates to plasma concentrations with a time delay. However, the effect of single-lung ventilation on exhaled propofol is unclear. Therefore, our goal was to evaluate exhaled propofol concentrations during single-lung compared to double-lung ventilation using double-lumen tubes.Methods
In a first step, we quantified adhesion of volatile propofol to the inner surface of double-lumen tubes during double- and single-lumen ventilation in vitro. In a second step, we enrolled 30 patients scheduled for lung surgery in two study centers. Anesthesia was provided with propofol and remifentanil. We utilized left-sided double-lumen tubes to separately ventilate each lung. Exhaled propofol concentrations were measured at 1-min intervals and plasma for propofol analyses was sampled every 20 min. To eliminate the influence of dosing on volatile propofol concentration, exhalation rate was normalized to plasma concentration.Results
In-vitro ventilation of double-lumen tubes resulted in increasing propofol concentrations at the distal end of the tube over time. In vitro clamping the bronchial lumen led to an even more pronounced increase (Δ AUC +62%) in propofol gas concentration over time. Normalized propofol exhalation during lung surgery was 31% higher during single-lung compared to double-lung ventilation.Conclusion
During single-lung ventilation, propofol concentration in exhaled air, in contrast to our expectations, increased by approximately one third. However, this observation might not be affected by change in perfusion-ventilation during single-lung ventilation but rather arises from reduced propofol absorption on the inner surface area of the double-lumen tube. Thus, it is only possible to utilize exhaled propofol concentration to a limited extent during single-lung ventilation.Registration of Clinical Trial
DRKS-ID DRKS00014788 ( www.drks.de ). 相似文献8.
The Effect of 5-Fluorouracil on the Adhesion Process in Patients Operated on for Colorectal Cancer 下载免费PDF全文
Serik ZhakipbekovMuratbek OsombaevSerik Irimbetov 《Asian Pacific journal of cancer prevention》2022,23(3):995-1003
Objective: The aim of this study was to improve the direct results of reconstructive surgery in patients operated on for complicated forms of colorectal cancer, by using 5-fluorouracil in the postoperative period. Methods: The study involved 126 patients (they were divided into 2 groups) with colorectal cancer, who underwent reconstructive surgery. They underwent a standard clinical examination and a mandatory examination program. Results: The use of 5-fluorouracil in adjuvant treatment in patients with colorectal cancer significantly reduces the number of subjective clinical manifestations (positional tests) in the main group – 17%, and in the control group – 54.3%, as well as objective clinical manifestations (instrumental research methods) in Group I – 13%, and Group II – 89.5%, respectively. The study shows that in re-operated patients with colorectal cancer who received 5-fluorouracil, abdominal adhesions are characterized by a low content of collagen and fibroblasts, low vascularization and a high content of polymerized fibrin strands. It was also found that re-operated patients with colorectal cancer who did not receive 5-fluorouracil, abdominal adhesions are characterized by a high collagen content, a large number of fibroblasts, and severe angiogenesis. Conclusion: It was found that the prolonged administration of 5-fluorouracil statistically significantly reduces the risk of adhesions, thereby showing the effectiveness of preventing adhesive disease of the abdominal organs. It was shown that the prolonged administration of 5-fluorouracil significantly reduces the number of subjective and objective signs of adhesive disease of the abdominal organs, as well as significantly decreases intraoperative and postoperative complications, the duration of the operation, and the amount of blood loss. In the postoperative period, it reduces the length of hospital stay and improves the quality of life of patients. 相似文献
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10.
BackgroundHundreds of adipokines have been identified, and their extensive range of endocrine functions—regulating distant organs such as oral tissues—and local autocrine/paracrine roles have been studied. In dentistry, however, adipokines are poorly known proteins in the dental pulp; few of them have been studied despite their large number. This study reviews recent advances in the investigation of dental-pulp adipokines, with an emphasis on their roles in inflammatory processes and their potential therapeutic applications.HighlightsThe most recently identified adipokines in dental pulp include leptin, adiponectin, resistin, ghrelin, oncostatin, chemerin, and visfatin. They have numerous physiological and pathological functions in the pulp tissue: they are closely related to pulp inflammatory mechanisms and actively participate in cell differentiation, mineralization, angiogenesis, and immune-system modulation.ConclusionAdipokines have potential clinical applications in regenerative endodontics and as biomarkers or targets for the pharmacological management of inflammatory and degenerative processes in dental pulp. A promising direction for the development of new therapies may be the use of agonists/antagonists to modulate the expression of the most studied adipokines. 相似文献