全文获取类型
收费全文 | 89篇 |
免费 | 0篇 |
专业分类
电工技术 | 1篇 |
化学工业 | 11篇 |
金属工艺 | 3篇 |
机械仪表 | 5篇 |
建筑科学 | 2篇 |
能源动力 | 1篇 |
轻工业 | 1篇 |
水利工程 | 1篇 |
无线电 | 7篇 |
一般工业技术 | 20篇 |
冶金工业 | 27篇 |
原子能技术 | 3篇 |
自动化技术 | 7篇 |
出版年
2022年 | 1篇 |
2019年 | 1篇 |
2016年 | 3篇 |
2014年 | 1篇 |
2013年 | 2篇 |
2011年 | 5篇 |
2010年 | 3篇 |
2009年 | 3篇 |
2008年 | 8篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2005年 | 6篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2002年 | 6篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1998年 | 8篇 |
1997年 | 5篇 |
1996年 | 5篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1970年 | 2篇 |
1936年 | 1篇 |
排序方式: 共有89条查询结果,搜索用时 17 毫秒
1.
1 放射性废物管理方面( 1 )应当建立一个国家级的废放射源管理战略。此战略应包括过去、现在和将来产生的所有放射性废物。此废物管理战略可以由国家指定的委员会来制订。该委员会可以包括来自主要废物的产生单位、废物管理机构和相应的审管部门的代表。此战略应当涵盖技术选择 (处理和处置 )和基础架构 (废物管理机构和基金 )。( 2 )放射性废物管理 ,包括废密封源管理。要求有专门的技术设施和特别训练的人员。为避免基础结构和人力资源重复设置 ,可以考虑单一的废物管理机构。该机构可设有区域性的分支机构 ,也可以设有专门的部门管理来… 相似文献
2.
Kubinyi Enik?; Topál József; Miklósi ádám; Csányi Vilmos 《Canadian Metallurgical Quarterly》2003,117(2):156
Eighty-seven pet dogs (Canis familiaris) were involved in an experiment in which they had to solve a task to obtain a ball. After witnessing a full demonstration by their owner (10 times pushing the handle of the box, which released a ball), most dogs preferred to touch the handle sooner and more frequently in comparison with other parts of the box, and they used the handle to get the ball. In contrast dogs in 3 control groups developed their own respective methods. The lack of emergence of the ball and playing after the demonstration did not affect the learning performance strongly. This suggests that in dogs the outcome of a demonstration plays only a restricted role in the manifestation of social learning. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
3.
Denker B.I. Kertesz I. Kirjanov A.V. Kroo N. Maljutin A.A. Osiko V.V. Sverchkov S.E. Sverchkov U.E. 《Quantum Electronics, IEEE Journal of》1989,25(9):1979-1980
The possibility of obtaining high laser output energies at a 1.32-μm wavelength using thin LiNdLa phosphate glass slabs with a high Nd3+ concentration is discussed. In the experiments, 3×14×125-mm slabs were prepared from LiNdLa phosphate glass with a Nd-concentration of 1.2×1021 cm-3. The facets of the slabs were not antireflection-coated. They were tested in a silver-coated quartz tube reflector of 25-mm diameter and pumped by 450-μs pulses from a flash lamp with a 120-mm arc length. In this construction the light, which passes through the slab, returns to it after reflection from the tube surface. Most of the radiation falls on the wider side of the slab at large angles of incidence, thus maximizing its path inside the slab. The quartz reflector was water cooled. The 150-mm laser resonator was formed by two flat mirrors. At 1.32-μm lasing wavelength an output mirror of r =95% reflectivity was used with less than 10% reflectivity at 1.32 μm 相似文献
4.
Gábor Bacsó Ádám Visegrádi Attila Kertesz Zsolt Németh 《Journal of Grid Computing》2014,12(1):169-186
The ever growing number of computation-intensive applications calls for utilizing large-scale, potentially interoperable distributed infrastructures. Nowadays, such distributed systems enable the management of heterogeneous scientific workflows of considerable sizes, where job scheduling and resource management is a crucial issue. In this paper we focus on the challenges of scheduling parameter sweep applications, a specific and commonly used type of workflows where ordering of job executions is irrelevant. A parameter sweep has a large set of independent job instances, called a multi-job, submitted for execution in a single step. In order to cope with the high uncertainty and unpredictable load of resources, and the simultaneous submissions of multi-job instances, we propose a statistics-based brokering approach for allocating jobs to resources so that the makespan is minimised. Earlier studies claim that users’ predictions on job runtime are inaccurate and unusable for scheduling. Our aim is to examine, whether statistical trace data for the same purpose is efficient compared to randomized allocation. 相似文献
5.
Miklósi áam; Pongrácz Péter; Lakatos Gabriella; Topál József; Csányi Vilmos 《Canadian Metallurgical Quarterly》2005,119(2):179
Dogs' (Canis familiaris) and cats' (Felis catus) interspecific communicative behavior toward humans was investigated. In Experiment 1, the ability of dogs and cats to use human pointing gestures in an object-choice task was compared using 4 types of pointing cues differing in distance between the signaled object and the end of the fingertip and in visibility duration of the given signal. Using these gestures, both dogs and cats were able to find the hidden food; there was no significant difference in their performance. In Experiment 2, the hidden food was made inaccessible to the subjects to determine whether they could indicate the place of the hidden food to a naive owner. Cats lacked some components of attention-getting behavior compared with dogs. The results suggest that individual familiarization with pointing gestures ensures high-level performance in the presence of such gestures; however, species-specific differences could cause differences in signaling toward the human. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
6.
Vuchinich Rudy; Wallace Dennis; Milby Jesse B.; Schumacher Joseph E.; Mennemeyer Stephen; Kertesz Stefan 《Canadian Metallurgical Quarterly》2009,17(3):165
Clinical trials with cocaine-dependent outpatients have found a strong relation between in-treatment and follow-up abstinence, and the strength of this relation is constant across treatment conditions with variable efficacy in generating abstinence. The authors conducted secondary analyses of data from 3 clinical trials to determine whether this relation generalizes to cocaine-dependent homeless persons. The 3 trials (total N = 543) were conducted in a community health care facility for homeless people. The 7 treatment arms across the 3 trials were combinations of day treatment, abstinence-contingent housing, and vocational training. Drug use was measured with urine toxicology testing. Consecutive weeks of abstinence during treatment were strongly related to abstinence at the 12-month follow-up, whether or not missing 12-month data were included in the analysis. The treatment arms differed in their efficacy in generating abstinence, but the relation between in-treatment and follow-up abstinence did not differ across treatment arms. These results replicate earlier reports of these relations and extend them to a population of homeless people. The lack of differences between treatment arms in the in-treatment–follow-up abstinence relation implies that that relation is independent of the treatment-specific intervention components that generate group differences in abstinence. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
7.
M. J. Diamond H. L. Needles C. A. Elliger D. J. Kertesz E. N. Frankel G. Fuller 《Journal of the American Oil Chemists' Society》1971,48(11):678-681
Two synthetic routes were followed to prepare graft copolymers with long side chains containing acyl chloride terminal groups.
In the first of these methods acryloxy aliphatic acyl chlorides were synthesized from ricinoleic acid, 12-hydroxystearic acid
and 10-hydroxydecanoic acid and then polymerized with other acrylate ester comonomers. In the second procedure, a prepolymer
was formed by copolymerizing acryloyl chloride with acrylate esters. The prepolymer then was treated with 12-hydroxystearic
acid or 9(10)-hydroxymethylstearic acid to produce polymers with side chains having terminal carboxylic acid groups. These
polymers were made more reactive by conversion to acid chlorides. The active polymers were applied to wool fabrics; the imparted
shrink-resistance was durable under an accelerated wash test procedure. An added advantage of the treatment is a soft “hand”
or feel resulting from internal plasticization of the polymer coating.
No. Market. Nutr. Res. Div., ARS, USDA.
W. Market, Nutr. Res. Div. ARS, USDA. 相似文献
8.
Vilmos Galamb Sang Chul Shim Fazle Sibtain Howard Alper 《Israel journal of chemistry》1985,26(3):216-218
The intermediates mentioned in the title are probably involved in the hydrogenation of olefins and dienes; bidentate phosphine and arsine cobalt complexes are useful reagents for these reactions. 相似文献
9.
Vilmos Rakovics Jnos Balzs Sndor Püspki Cesare Frigeri 《Materials Science and Engineering: B》2001,80(1-3):18-22
Liquid phase epitaxial growth of InP/InGaAs(P) infrared emitting diodes was studied systematically. Small area surface emitting LED chips were prepared to cover completely the 1100–1700 nm wavelength ranges. Nine different diodes were fabricated with optimal spacing of the peak emission wavelengths in order to have sufficient overlapping of their spectra. Efficient LEDs with narrow spectra have been realised by careful selection of the layer structure and growth conditions. Thick active layers with constant composition and abrupt interfaces have been grown for each emission wavelength. The long wavelength diodes (1275–1675 nm) were grown with additional quaternary layer(s) to prevent the melt-back of the active layer by InP melt. Low growth temperature (590°C) was used to prepare the LED structures. In the spectral range of 1250–1520 nm higher growth temperatures (625–645°C) were necessary to improve the device parameters. Such phenomena confirm the existence of the miscibility gap in the InGaAsP quaternary crystal system. Quaternary layers grown in the middle of the immiscibile region showed non-uniform composition and ragged interfaces at the upper heterojunction. 相似文献
10.