全文获取类型
收费全文 | 392篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
化学工业 | 13篇 |
金属工艺 | 1篇 |
机械仪表 | 11篇 |
能源动力 | 1篇 |
石油天然气 | 2篇 |
无线电 | 2篇 |
一般工业技术 | 13篇 |
冶金工业 | 333篇 |
原子能技术 | 17篇 |
自动化技术 | 1篇 |
出版年
2020年 | 1篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2016年 | 2篇 |
2014年 | 1篇 |
2013年 | 7篇 |
2012年 | 1篇 |
2011年 | 1篇 |
2010年 | 1篇 |
2009年 | 1篇 |
2004年 | 4篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 2篇 |
1999年 | 6篇 |
1998年 | 112篇 |
1997年 | 63篇 |
1996年 | 48篇 |
1995年 | 30篇 |
1994年 | 10篇 |
1993年 | 24篇 |
1992年 | 3篇 |
1990年 | 2篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1987年 | 4篇 |
1986年 | 1篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1981年 | 3篇 |
1980年 | 6篇 |
1978年 | 3篇 |
1977年 | 16篇 |
1976年 | 16篇 |
1975年 | 4篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有394条查询结果,搜索用时 0 毫秒
91.
Efficiency of pulse-therapy with prospidin (500 mg for 5 days in hospital, 500-1000 mg for a month as maintenance) and methotrexate (30 mg a week i.v. in hospital, 7-10 mg a week as maintenance) was investigated in 93 patients with severe RA. The response to prospidin and methotrexate arose quickly (within 10-14 and 4-5 weeks, respectively) and occurred in 73 and 70% of patients, respectively. Withdrawal of the drug was caused by side effects of methotrexate (19.3%) and resistance to prospidin (23.2%). 相似文献
92.
Formation of delta pH is registered when studying Ca2+ passive transport through lymphocytes' plasma membrane (PM). The pHi values strongly depended on pH0. Changes of pH0 lead to unidirectional changes of pHi and affect Ca2+ concentration in cytoplasm of the intact cells. The presence of Ca(2+)-channels antagonists does not affect this phenomenon. Ca2+/H+ exchange is supposed to exist in PM. It is also of great interest that cytoplasmic Ca2+ and H+ activities are some equal in physiological range. Besides, H(+)-buffering as well as Ca(2+)-buffering systems are present in the cell and have their maximal capacity about 7.2 in the intact cells. The spectrofluorimetric study of internal lymphocytes' H(+)-buffering capacity with titration technique using weak base, acid or other buffer addition has demonstrated maximal value of 9.0-1.1 mM depending on the substance to be added. 相似文献
93.
OV Honcharenko 《Canadian Metallurgical Quarterly》1997,(11-12):21-23
The suture insufficiency have occurred in 26 (15%) patients after operative treatment of 179 patients with different diseases of small intestine. The main methods of treatment of this patients are the surgical procedures, intestinal intubation, rational antibioticotherapy, the hemostasis correction for the postoperative peritonitis liquidation. 相似文献
94.
AS Pudenko IS Kudryavtsev OV Zatsepina Chentsov YuS 《Canadian Metallurgical Quarterly》1997,11(4):449-461
The literature has been reviewed to evaluate the technique and clinical value of radionuclide measurements of microvascular permeability and oedema formation in the lungs. Methodology, modelling and interpretation vary widely among studies. Nevertheless, most studies agree on the fact that the measurement of permeability via pulmonary radioactivity measurements of intravenously injected radiolabelled proteins versus that in the blood pool, the so-called pulmonary protein transport rate (PTR), can assist the clinician in discriminating between permeability oedema of the lungs associated with the adult respiratory distress syndrome (ARDS) and oedema caused by an increased filtration pressure, for instance in the course of cardiac disease, i.e. pressure-induced pulmonary oedema. Some of the techniques used to measure PTR are also able to detect subclinical forms of lung microvascular injury not yet complicated by permeability oedema. This may occur after cardiopulmonary bypass and major vascular surgery, for instance. By paralleling the clinical severity and course of the ARDS, the PTR method may also serve as a tool to evaluate new therapies for the syndrome. Taken together, the currently available radionuclide methods, which are applicable at the bedside in the intensive care unit, may provide a gold standard for detecting minor and major forms of acute microvascular lung injury, and for evaluating the severity, course and response to treatment. 相似文献
95.
OV Trapezov 《Canadian Metallurgical Quarterly》1997,33(8):1162-1167
On an experimental basis in the Institute of Cytology and Genetics Siberian Division, Russian Academy of Sciences, a cage population of river otter (Lutra lutra) was formed. During the introduction period of captivity, as the selection for stress resistance in an anthropogenic environment is shown to be a crucial factor. Through the course of domesticating river otters, directional selection occurs due to the increase in the number of individual otters and to the absence of fear-induced response toward humans. In the initial generation caught in the wild, three types of animals were revealed: cowardly or showing a fear-induced response (80%), aggressive (10%), and quiet (10%). After three generations were reared in captivity, the relationship between these three phenotypes changed in favor of otters with a quiet response toward man; the percentage increased. After three generations, these quiet animals comprised 37%. The percentages of aggressive and cowardly animals accounted for 11 and 52%, respectively. 相似文献
96.
VV Turov NP Galagan OV Pokrovskaia VA Pokrovski? LI Dembnovetskaia 《Canadian Metallurgical Quarterly》1997,42(5):1040-1046
The experimental technique is presented which allows the investigation of water at the adsorbent-biopolymer interface by record of temperature dependencies of 1H NMR signals during the heating of previously frozen water suspensions. It was found that the adsorption of protein conconovalin A resulted in twofold decrease of strong bound water amount and in 70% increase of loosely bound one. The mean-value of Gibbs energy decreased twice for strong bound water and increased twice for loosely bound one. The external layer of hydrate shell of silica particles with adsorbed conconovalin A was organized by protein molecules. This conclusion is based on the observed total increase of loosely bound water amount, as a result, of protein adsorption, although its amount with respect to a protein molecule decreased. 相似文献
97.
D. A. Slesarev 《Measurement Techniques》1998,41(11):1034-1040
Aspects of the use of Cohen-type frequency-time distributions are studied in order to quantitatively evaluate the parameters
of unsteady multicomponent signals. The selection of parameters of the kernel the distribution that solve the stated problem
is examined.
Translated from Izmeritel'naya Tekhnika, No. 11, pp. 36–39, November, 1998. 相似文献
98.
99.
AE Rudenko FP Trinus LV Korzhenevski? TA Bukhtiarova AZ Koval' VD Maly? OV Novikova EV Tkachenko 《Canadian Metallurgical Quarterly》1996,(5-6):134-136
The authors submit results of treatment of patients having suffered from postherpetic pain syndrome (herpetic ganglionitis of the cervical, thoracic, lumbosacral localization, postherpetic intercostal neuralgia, ganglionitis of the trigeminal nerve). In viral diseases, amizone has marked analgetic, antiinflammatory, and immunomodulating effects. The drug is well tolerated by patients, is not associated with side effects under prescribed doses (0.25-0.75 as one dose on a three- or four-times daily schedule during the course of treatment lasting three or four weeks). The drug preparation in question is less effective in the treatment of chronic recurring post-therapeutic intercostal neuralgias, radiculalgia. 相似文献
100.