全文获取类型
收费全文 | 1513篇 |
免费 | 145篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 36篇 |
妇产科学 | 9篇 |
基础医学 | 210篇 |
口腔科学 | 35篇 |
临床医学 | 225篇 |
内科学 | 225篇 |
皮肤病学 | 8篇 |
神经病学 | 191篇 |
特种医学 | 81篇 |
外科学 | 224篇 |
综合类 | 22篇 |
一般理论 | 1篇 |
预防医学 | 128篇 |
眼科学 | 65篇 |
药学 | 149篇 |
肿瘤学 | 49篇 |
出版年
2022年 | 20篇 |
2021年 | 25篇 |
2020年 | 15篇 |
2019年 | 25篇 |
2018年 | 27篇 |
2017年 | 16篇 |
2016年 | 21篇 |
2015年 | 24篇 |
2014年 | 55篇 |
2013年 | 43篇 |
2012年 | 72篇 |
2011年 | 75篇 |
2010年 | 32篇 |
2009年 | 32篇 |
2008年 | 55篇 |
2007年 | 65篇 |
2006年 | 65篇 |
2005年 | 53篇 |
2004年 | 62篇 |
2003年 | 51篇 |
2002年 | 60篇 |
2001年 | 58篇 |
2000年 | 44篇 |
1999年 | 47篇 |
1998年 | 18篇 |
1997年 | 11篇 |
1996年 | 13篇 |
1994年 | 15篇 |
1993年 | 14篇 |
1992年 | 51篇 |
1991年 | 25篇 |
1990年 | 23篇 |
1989年 | 33篇 |
1988年 | 26篇 |
1987年 | 36篇 |
1986年 | 35篇 |
1985年 | 37篇 |
1984年 | 18篇 |
1983年 | 22篇 |
1982年 | 18篇 |
1981年 | 11篇 |
1979年 | 21篇 |
1978年 | 13篇 |
1977年 | 17篇 |
1976年 | 14篇 |
1975年 | 18篇 |
1974年 | 26篇 |
1973年 | 17篇 |
1971年 | 14篇 |
1969年 | 12篇 |
排序方式: 共有1666条查询结果,搜索用时 31 毫秒
1.
2.
K. H. McAllister 《Psychopharmacology》1994,116(3):317-325
D-Cycloserine (DCS) has been reported to affect the central nervous system in man. To investigate whether the compound produces specific behavioural effects, DCS was administered to male mice in a resident-intruder situation and the behaviour of the interacting mice assessed using ethological analysis. Resident mice given DCS (32.0–320.0 mg/kg PO, 60 min before testing) showed dose-dependent increases in social investigation, smaller increases in sexual behaviour and decreased aggressiveness. Defensive and flight behaviour were not affected. Intruder mice showed slight increases in sexual behaviour that were not dose-dependent, and small increases in social investigation. The increases in social investigation induced by DCS (320.0 mg/kg) in resident mice were not reversible with R-HA 966 (32.0 mg/kg IP, 30 min before testing), a blocker of the strychnine-insensitive glycine modulatory site associated with theN-methyl-D-aspartate receptor, but were blocked by the GABA antagonist bicuculline (0.56 mg/kg IP, 5 min before testing). The small DCS-induced increase in sexual behaviour in residents was reversed by R-HA 966. Within the parameters of the resident-intruder situation, DCS exerts socio-sexual behaviour-enhancing effects which are dependent upon the role of the interactant, and which are mediated by an action upon multiple substrates. DCS may be regarded as another example of a sociotropic (approach-promoting) agent.Some of these results have been presented at the 1st International Congress on Hormones, Brain and Neuropsychopharmacology, Rodos, Greece, September 12–17, 1993 相似文献
3.
Mohammad-Reza Movahed Tony Ngoc Nguyen Kent McAllister Jenchen Yang 《Cardiovascular Revascularization Medicine》2006,7(3):189-191
We present a case of intermittent cessation of blood flow through stent struts during systole, with normal flow during diastole in the previously stented ostial vein graft. After reviewing the initial procedure, we discovered that the operator had difficulty in positioning the stent. After stent deployment, the ostial stent was malpositioned and was protruding more than 50% into the aorta. During systole, the contrast in the stent struts, which are situated in the aorta, was being washed off by systolic blood flow, while in the diastole, the flow of contrast was normal. This is the first case report of this observation with a brief review. 相似文献
4.
Patients with the irritable bowel syndrome have significantly more rapid and significantly greater slowing of the pulse rate than do age-, sex-, and stressor-matched controls when their pulse rate is measured at initial outpatient clinic attendance. These findings provide further evidence that altered autonomic function exists in patients with the irritable bowel syndrome. 相似文献
5.
6.
Phaeohyphomycotic cutaneous disease caused by Pleurophoma in a cardiac transplant patient 总被引:2,自引:0,他引:2
D P Dooley M L Beckius B S Jeffery C K McAllister W H Radentz A R Feldman M G Rinaldi S R Bailey J H Keeling 《The Journal of infectious diseases》1989,159(3):503-507
A 56-y-old female cardiac transplant patient treated with cyclosporine and prednisone noted the onset of three nontender red nodules on the legs and arms after gardening. Biopsy of all lesions revealed inflammatory cells and hyphal elements in the dermis. The dematiaceous fungus cultured from biopsy tissue was a pycnidial-forming organism of the genus Pleurophoma. The lesions responded to the topical application of miconazole. 相似文献
7.
N E Goeders M A McNulty S Mirkis K H McAllister 《Pharmacology, biochemistry, and behavior》1989,33(4):859-866
This investigation was designed to examine the effects of benzodiazepines on intravenous cocaine self-administration in rats. Pretreatment with low doses of the benzodiazepine receptor agonist, chlordiazepoxide (0.3 to 1.0 mg/kg, IP), resulted in small but nonsignificant increases in drug intake with 0.5 mg/kg cocaine, while higher doses (10 mg/kg, IP) significantly decreased drug intake in all rats tested. The effects of chlordiazepoxide on self-administration were attenuated when the concentration of cocaine was increased to 1.0 mg/kg, suggesting that chlordiazepoxide was opposing rather than augmenting the pharmacological actions of cocaine. Pretreatment with the benzodiazepine receptor antagonist, Ro 15-1788 (1.0 to 10 mg/kg, IP), had no effect on self-administration, suggesting that the reinforcing properties of cocaine do not result from direct interactions with benzodiazepine receptors. The result of this investigation demonstrate that chlordiazepoxide alters intravenous cocaine self-administration in rats. Although additional research will be necessary to confirm these data, the results of this investigation suggest that chlordiazepoxide may decrease the reinforcing efficacy of cocaine through indirect actions on dopaminergic neuronal activity potentially mediated through GABAergic mechanisms via benzodiazepine receptor activation. 相似文献
8.
W B Strecker J W McAllister P R Manske P L Schoenecker L A Dailey 《Journal of pediatric orthopedics》1990,10(4):442-444
Since 1963, 25 patients have undergone Sever-L'Episcopo transfers for obstetrical birth palsy at the St. Louis Unit of the Shriners Hospital for Crippled Children. A follow-up of 2-6 years was possible with a retrospective review of 16 patients. Substantial improvement in shoulder external rotation as well as subjective functional improvement was obtained by all patients. Three transient and one permanent axillary nerve palsies resulting from this procedure are reported. 相似文献
9.
We report the results of examination of patients before primary and secondary unilateral digital nerve repair. Two-point discrimination was uniformly recorded. The results show that significant overlap of adjacent digital nerves is common and this has important implications for interpretation of results after repair. Recommendations are made regarding the evaluation of outcome following surgery. 相似文献
10.
M D Goldsborough P McAllister R Reid G Temple A T Lorincz 《Molecular and cellular probes》1992,6(6):451-457
The reported prevalence of human papillomavirus (HPV) type 16 in the genital tracts of women with various gynaecological conditions is highly variable. In particular, some results with the polymerase chain reaction (PCR) technique have suggested that HPV-16 is a ubiquitous or very common virus. We undertook this study to help clarify the current confusion. PCR with HPV consensus L1 primers and specific E6 primers was used to study 89 women attending two gynaecology referral clinics, as well as 99 women attending a health maintenance organization (HMO) clinic; 70 of these latter women had no current or prior history of genital HPV disease. HPV-16 was detected in less than 5% of cytologically normal women from either group and in 17% (6/36) and 31% (9/29) of women with cervical intraepithelial neoplasia (CIN) from the referral clinic and the HMO, respectively. The other high-risk or intermediate-risk HPVs (types 18, 31, 33 or 35) were less prevalent than HPV 16 in all groups of women. A majority of the HPV types detected by the L1 primers in normal women were uncharacterized HPVs. Overall these uncharacterized HPVs were detected in 37% (46/123) of the normal women and in 48% (31/65) of the women with CIN. Using the most sensitive PCR product detection method employed in the study, HPV DNA was detected in 36% (4/11) of swab specimens obtained from the external abdomen. 相似文献