全文获取类型
收费全文 | 605篇 |
免费 | 1篇 |
专业分类
电工技术 | 1篇 |
化学工业 | 7篇 |
能源动力 | 1篇 |
轻工业 | 2篇 |
水利工程 | 5篇 |
石油天然气 | 1篇 |
无线电 | 1篇 |
一般工业技术 | 10篇 |
冶金工业 | 577篇 |
自动化技术 | 1篇 |
出版年
2021年 | 1篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2016年 | 1篇 |
2013年 | 3篇 |
2012年 | 1篇 |
2011年 | 1篇 |
2010年 | 2篇 |
2009年 | 1篇 |
2008年 | 2篇 |
2007年 | 1篇 |
2006年 | 1篇 |
2003年 | 4篇 |
2002年 | 2篇 |
1999年 | 4篇 |
1998年 | 152篇 |
1997年 | 95篇 |
1996年 | 70篇 |
1995年 | 35篇 |
1994年 | 26篇 |
1993年 | 31篇 |
1992年 | 12篇 |
1991年 | 4篇 |
1990年 | 6篇 |
1989年 | 6篇 |
1988年 | 5篇 |
1987年 | 4篇 |
1986年 | 3篇 |
1985年 | 9篇 |
1984年 | 1篇 |
1982年 | 4篇 |
1981年 | 5篇 |
1980年 | 2篇 |
1978年 | 4篇 |
1977年 | 39篇 |
1976年 | 61篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有606条查询结果,搜索用时 0 毫秒
101.
102.
NE Zakharova NP Vaneeva NE Iastrebova NG Kalina MM Tokarskaia VV Sergeev NV Tsvetkova NN Ovechko TV Sokolova 《Canadian Metallurgical Quarterly》1998,(6):82-83
A study was made into the functional status of hypophysis, adrenal cortex, ovaries, and thyroid gland in patients with kraurosis and leukoplakia vulvae. The above patients demonstrated profound disturbances in the system hypophysis-ovaries, that attest to the need for applying corrective therapies to treat the disturbed hormonal homeostasis. 相似文献
103.
NI Taranenko SL Allman VV Golovlev NV Taranenko NR Isola CH Chen 《Canadian Metallurgical Quarterly》1998,26(10):2488-2490
Sequencing of DNA fragments of 130 and 200 bp using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for DNA ladder detection was demonstrated. With further improvement in mass resolution and detection sensitivity, mass spectrometry shows great promise for routine DNA sequencing in the future. 相似文献
104.
A consensus has evolved that there is little evidence supporting the view that the second line agents significantly alter long-term outcomes in rheumatoid arthritis. Consequently, changes in approaches to treatment currently being employed include earlier use of existing second line agents, their use in combinations, and greater use of corticosteroids. Our awareness that our current drugs, at best, fall considerably short of attaining the therapeutic results we would like to achieve causes us to look forward to the development of rationally derived biologic agents with considerable anticipation. 相似文献
105.
106.
107.
Acute pancreatitis was experimentally produced in dogs to study the effect of the disease on glucose tolerance. The k value (glucose disappearance coefficient measured in percentage decrease of glucose/min) calculated from the high-dose intravenous glucose-tolerance test was used to evaluate the glucose tolerance of each dog. Thirty dogs were allotted to 3 groups of 10 dogs each as follows: group I--nonsurgical control dogs; group II--surgical control dogs; and group III--pancreatitis-affected dogs. To increase their susceptibility to diabetes, 50% partial pancreatectomies and ductal catheterizations were performed on group II and III dogs. Saline solution was infused into the ductal systems of group II dogs, and staphylococcal alphatoxin was infused into the ductal systems of group III dogs to produce pancreatitis. The results indicated that (1) high-dose intravenous glucose-tolerance test was an effective tool for determining decreased glucose tolerance in dogs; (2) glucose tolerance of group III dogs was markedly decreased compared with that of group I and II dogs; (3) staphylococcal alpha-toxin produced signs of moderately severe pancreatitis; and (4) 50% partial pancreatectomy and saline solution infusion produced clinical and clinicopathologic signs of mild pancreatitis. To determine if a simplified k value (calculated using 2 or 3 blood samples) could closely approximate the standard k value (calculated using 6 blood samples), simplified k values were derived from the 5- and 60-minute blood sample values. These values closely approximated the standard k values, indicating the simplified value may be used in the clinical situation. The standard k value, however, is preferred for investigative work. 相似文献
108.
109.
110.