全文获取类型
收费全文 | 139篇 |
免费 | 14篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 3篇 |
妇产科学 | 1篇 |
基础医学 | 10篇 |
口腔科学 | 2篇 |
临床医学 | 13篇 |
内科学 | 47篇 |
皮肤病学 | 6篇 |
神经病学 | 4篇 |
特种医学 | 3篇 |
外科学 | 22篇 |
综合类 | 12篇 |
预防医学 | 7篇 |
眼科学 | 1篇 |
药学 | 14篇 |
中国医学 | 10篇 |
肿瘤学 | 2篇 |
出版年
2021年 | 1篇 |
2019年 | 1篇 |
2018年 | 4篇 |
2017年 | 4篇 |
2016年 | 4篇 |
2015年 | 3篇 |
2014年 | 4篇 |
2013年 | 6篇 |
2012年 | 4篇 |
2011年 | 5篇 |
2010年 | 9篇 |
2009年 | 6篇 |
2008年 | 3篇 |
2007年 | 5篇 |
2006年 | 2篇 |
2003年 | 2篇 |
2002年 | 2篇 |
2001年 | 6篇 |
2000年 | 1篇 |
1999年 | 5篇 |
1998年 | 2篇 |
1997年 | 7篇 |
1996年 | 5篇 |
1995年 | 8篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1992年 | 2篇 |
1988年 | 2篇 |
1984年 | 1篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1964年 | 1篇 |
1962年 | 2篇 |
1960年 | 2篇 |
1959年 | 8篇 |
1958年 | 7篇 |
1957年 | 10篇 |
1956年 | 4篇 |
1955年 | 2篇 |
1954年 | 2篇 |
1949年 | 1篇 |
1948年 | 3篇 |
排序方式: 共有158条查询结果,搜索用时 15 毫秒
51.
52.
53.
54.
本文报导藏红花(Crocus sativus L.)对子宫的作用、对动情周期的影响及毒性试验的结果,藏红花各种提液对兔和狗等的子宫,包括孕与未孕、离体与在体及整体的子宫瘘管,均表现兴奋作用。对受孕子宫较未孕子宫作用强。甘肃产红花(Carthamus tinctorius L.)对子宫的作用远较藏红花为弱,藏红花兴奋子宫的机制,似与子宫肌和神经都有关系。用含藏红花0.23—2%的食物饲喂正常小白鼠三星期,观察到阴道全角化的持续时间可延长至3—4天,停药后作用迅速消失。藏红花煎剂在小白鼠灌胃试验,LD50为20.7克/公斤。小白鼠饲料中混入2%的藏红花飼喂一个月以上开始出现体重减轻等毒性症状,剂量再增加时则出现死亡。甘肃产红花的毒性比藏红花小。 相似文献
55.
56.
Temporal changes in the humoral immune response of cattle during experimental infections with Onchocerca lienalis 总被引:1,自引:1,他引:1
In order to gain insights into the immune response in onchocerciasis during early infection, laboratory-reared calves were infected with 1000 Onchocerca lienalis infective larvae and examined serologically over a period of 508 days. Levels of serum antibodies measured by ELISA against adult worm extract revealed a multiphasic response, characterized by a broadly similar profile of peaks in individual animals arising at 15–30, 79 and >266 days after infection. Timings of these changes in responsiveness closely mirrored parasite development, coinciding with larval moults and with the onset of a patent infection. The levels of individual antibody isotypes directed against parasite antigens was strongly skewed. The dominant response was of IgG1, although limited reactivities were also found for IgG2 and IgM: No parasite-specific IgA antibodies were detected. Immuno-blots of adult worms extracts revealed a pattern of antigen recognition over time that matched the results obtained by ELISA. Again, the IgGl response was strongest, although certain lgG2 and IgM specificities were well represented. In general, there was a steady increase in the number of individual antigens recognized as the infection progressed, with a striking expansion of antibody specificities from day 79 following the fourth larval moult. Antibodies to a 16kDa component were a prominent feature of the response following development of a patent infection. These data reveal the strong influence of parasite biology on the development of the immune response in onchocerciasis. 相似文献
57.
CHI‐HUNG CHENG YI‐SHYAN CHEN KUO‐HSIUNG SHU HORNG‐RONG CHANG MING‐CHIH CHOU 《Nephrology (Carlton, Vic.)》2012,17(8):718-724
Aim: Serum levels of soluble intracellular cell adhesion molecule‐1 (sICAM‐1), soluble vascular cell adhesion molecule‐1 (sVCAM) and monocyte chemotactic protein 1 (MCP‐1), are elevated in patients with peripheral artery disease (PAD). However, the levels of these cell adhesion molecules in patients undergoing haemodialysis (HD) are unclear. Method: A total of 112 HD patients were included and PAD was diagnosed using the ankle‐brachial index and Doppler ultrasound. Serum levels of sICAM‐1, sVCAM‐1 and MCP‐1 were assayed using enzyme linked immunosorbent assay. Results: Out of 106 HD patients, 31 (27.7%) were diagnosed with PAD. After adjusting for risk factors, higher serum levels of sVCAM‐1 and sICAM‐1 were associated with PAD in HD patients, with an odds ratio of 5.3 (95% CI 3.3–65.5) and 2.7 (95% CI 1.2–21.8) respectively. Using sVCAM‐1 and sICAM‐1 for diagnosis of PAD in HD patients, sVCAM‐1 had a sensitivity of 72.4% and specificity of 62.3% for sVCAM‐1 and sICAM‐1 had a sensitivity of 89.3% and a specificity of 40%. MCP‐1 was not associated with PAD in HD patients. In addition, the fistula of HD patients with PAD had a lower A‐V access flow. Conclusion: sVCAM‐1 and sICAM‐1 was associated with higher risk of PAD in HD patients. Moreover, HD patients with PAD had a lower blood flow and lower A‐V access flow. Our results showed that sVCAM‐1 and sICAM‐1 may be used as screening markers for PAD in HD patients. 相似文献
58.
BACKGROUND Wound closure devices include sutures, tissue adhesives, adhesive strips, and staples. Recent studies suggest no differences between various tissue adhesives and sutures for dehiscence, infection, and satisfaction when assessed by patients or surgeons. To date, no studies have investigated ClozeX (Clozex Medical LLC, Wellesley, MA, USA), a novel adhesive strip, for closure of surgical incisions.
OBJECTIVE To compare surgical wounds repaired with ClozeX versus suture.
METHODS A prospective, randomized study was conducted, in which 15 patients with surgical incisions were allocated to closure with ClozeX on half of the wound and monofilament suture on the other half. Physician satisfaction with blinded assessment, patient satisfaction, complication rates, and closure times were recorded.
RESULTS Application with ClozeX was faster than with suture ( p =.007). There were no complications in either group. Sixty-nine percent of the patients gave ClozeX a higher satisfaction score ( p =.02). More physicians were satisfied with the ClozeX half than with the suture half ( p =.007).
CONCLUSIONS This pilot study demonstrates ClozeX to be a safe and effective closure device. The cosmetic outcome seems to be at least as good as simple running suture. Physicians and patients were generally more satisfied with ClozeX. No difference was found in the rate of dehiscence or infection between the groups. 相似文献
OBJECTIVE To compare surgical wounds repaired with ClozeX versus suture.
METHODS A prospective, randomized study was conducted, in which 15 patients with surgical incisions were allocated to closure with ClozeX on half of the wound and monofilament suture on the other half. Physician satisfaction with blinded assessment, patient satisfaction, complication rates, and closure times were recorded.
RESULTS Application with ClozeX was faster than with suture ( p =.007). There were no complications in either group. Sixty-nine percent of the patients gave ClozeX a higher satisfaction score ( p =.02). More physicians were satisfied with the ClozeX half than with the suture half ( p =.007).
CONCLUSIONS This pilot study demonstrates ClozeX to be a safe and effective closure device. The cosmetic outcome seems to be at least as good as simple running suture. Physicians and patients were generally more satisfied with ClozeX. No difference was found in the rate of dehiscence or infection between the groups. 相似文献
59.
FENG-NIEN KO LING-JAU YEH HSIU-CHUAN LIANG SHENG-CHU KUO CHE-MING TENG 《The Journal of pharmacy and pharmacology》1996,48(4):395-400
p-Chlorobiphenyl (1–50 μm ) concentration-dependently inhibited the aggregation and release reaction of rabbit washed platelets induced by arachidonic acid and collagen, but not those induced by platelet-activating factor (PAF), U46619 and thrombin. The IC50 values of p-chlorobiphenyl on the arachidonic acid and collagen-induced platelet aggregation were 2.9 ± 0.5 and 12.8 ± 2.3 μm , respectively. The formation of both platelet thromboxane B2 and prostaglandin D2 caused by arachidonic acid was inhibited by p-chlorobiphenyl concentration-dependently. In myo-[3H]inositol-labeled and fura-2-loaded platelets, [3H]inositol monophosphate generation and the rise in intracellular Ca2+ stimulated by arachidonic acid were inhibited by p-chlorobiphenyl. In human platelet-rich plasma, p-chlorobiphenyl and indomethacin prevented the secondary aggregation and blocked ATP release from platelets induced by adenosine 5′-diphosphate and adrenaline without affecting the primary aggregation. It is concluded that p-chlorobiphenyl may be a cyclo-oxygenase inhibitor and its antiplatelet action is mainly due to the inhibition of thromboxane formation. 相似文献
60.