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排序方式: 共有171条查询结果,搜索用时 15 毫秒
61.
大塚丰日 《机械工业高教研究》2012,(2):3-11
二战之后至抗法独立战争期间,越南避开战火,在中国广西壮族自治区内建立起所谓的"中央学舍区",以期为独立战争和战后国家建设培养骨干人才。"中央学舍区"从1951年10月1日成立到1958年结束,虽只存在短短几年,但其培养的大批人才,为越南高等教育的奠基和发展作出了突出贡献。本文作者通过大量查阅中越两国联合办学的有关历史文献和访谈资料,梳理了中央学舍区学校成立的艰难历程和办学情况,为研究战争期间或者其他关键时期如何进行教育实践活动提供了生动有趣的例子。而对于中国来说,由于当时刚刚建立新的国家政权,并且面临着抗美援朝战争的严峻形势,其对于越南的援助更彰显了一种大国风范,意义重大。 相似文献
62.
Richard W. Willson Marianne Payne Ellen Smith 《Journal of the American Planning Association. American Planning Association》2013,79(4):354-367
The narrow conception of rationality embodied in transportation planning is poorly suited to resolving goal conflicts. This article explores a broader view of what is rational, drawing on the ideas of communicative rationality. It offers a report from practice based on a case study of an access planning process at the Bay Area Rapid Transit District (BART). We consider propositions that the planning process enhanced deliberation about ends, improved issue framing through simultaneous engagement of means and ends, and enlarged the deliberative capacity of the organization. The article provides insights into these propositions and suggests ways that communicative rationality theory can improve transportation planning and policy. 相似文献
63.
Performances of a new designed Double-pass solar drier (DPSD) were compared with those of a typical cabinet drier(CD) and a traditional open-air sun drying for drying of red chilli in central Vietnam. The drying times (including nights) to reach the desired moisture content of 10% (on a wet basis) were 32 and 73 h respectively. During open-air sun drying the desired moisture content of 10% (on a wet basis) could not be reached even after 93 h of drying (including nights). The overall drying efficiencies of DSPD and CD to reach the desired moisture content of 10% (on a wet basis) were 24.04% and 11.52% respectively while the overall drying efficiency of open-air sun drying to reach the desired moisture content of 15% (on a wet basis) was 8.03%. Further, ASTA colour value of the solar dried products from the DSPD was higher than those from CD and open-air sun drying. Similar results were obtained for mycotoxins occurrence. Contamination by aflatoxin B1 was significantly lower in dried chilli from DPSD (<0.250 μg kg−1) when compared to traditional open-air drying technique (11.980 μg kg−1). The drying cost per one kilogram of chilli was 39% lower in case of DPSD (0.077 US$/kg) as compared to CD (0.126 US$/kg). The Double-pass solar drier was found to be technically suitable and economically viable for drying of red chillies in central Vietnam. 相似文献
64.
Implementation failure is a long-known Achilles’ heel of water and flood management plans. Contemporary planning approaches address the implementation challenge by using more participatory planning processes to ensure support for plans, assuming that this support will also benefit plan implementation. A proactive analysis of possible implementation issues during the planning stage is not yet common. This paper introduces a framework based on the motivation and ability of actors, supported by concepts of triggers, threats and opportunities. A case application for flood management in Ho Chi Minh City, Vietnam, demonstrates the use of this motivation-ability framework to assess plan implementation maturity. 相似文献
65.
BACH HO FIELD, A FRACTURED GRANITIC BASEMENT RESERVOIR, CUU LONG BASIN, OFFSHORE SE VIETNAM: A "BURIED-HILL" PLAY 总被引:1,自引:0,他引:1
A combination of seismic, wireline, FMI and core data shows that Bach Ho field in the Cuu Long Basin, offshore SE Vietnam, is an unusual “buried hill” reservoir. There is little or no production from associated siliciclastic “grus” or granite wash, and the fractured reservoir matrix is largely made up of unaltered acid igneous lithologies (mostly granites and granodiorites). A major NE‐SW late Oligocene reverse fault system cross‐cuts the field, with about 2000 m of lateral displacement in the highly productive Central Block. The associated fracture meshwork greatly enhances reservoir quality. Transpressional wrench faulting in the late Oligocene in this part of the field emplaced a block of brittle granitic rock on top of organic‐rich Eocene – Oligocene mudstones, and facilitated the early migration of hydrocarbons into the fracture network. Structure, not erosion, set up the 1000 m column of liquids in the fractured granodiorites which form the reservoir at Bach Ho. Faulted intervals with associated damage zones create an enhanced secondary porosity system in the granodiorite; effective porosities range from 3‐5% and occasionally up to 20%. Some associated fractures are partially blocked by authigenic calcite and kaolinite. Features that degrade reservoir quality at Bach Ho include: (i) a thin, low‐permeability clay‐plugged “rind” created by surface‐related (meteoric) Eocene – Oligocene weathering — this rind variably overprints the uppermost 10‐40 m of exposed basement throughout the Cuu Long Basin; and (ii) widespread hydrothermal cements which largely predate late Oligocene wrench faulting; cementation mostly took place during post‐magmatic cooling and precipitated zeolites, carbonates and silica in fractures which cut across both the igneous and the country rocks. Porosity‐occluding hydrothermal and authigenic precipitates developed in pre‐existing fractures in the Bach Ho granodiorite. These pre– late Oligocene mineral‐filled fractures acted as zones of structural weakness during and after subsequent late Oligocene structural deformation. Together with new fractures formed during thrusting, the older fractures may have reopened during thrust emplacement, and subsequent gravitational settling of, the Central Block. 相似文献
66.
Reviews the book, Strangers at the gate: The boat people's first ten years in Canada by Morton Beiser (1999). This book chronicles 10 years of research on the boat people since the arrival of 60,000 refugees from Vietnam, Laos, and Cambodia circa 1980. The data upon which most of the monograph is based are drawn from the Refugee Resettlement Project, which is a longitudinal study of a representative sample of 1,358 refugees. This book and the data it reports serve to challenge a number of popular misconceptions including: (1) Immigrants and refugees cause unemployment; (2) Immigrants and refugees overuse and put tremendous strain on the social welfare net; and (3) Immigrants and refugees bring crime and disease to Canada. The book also fairly examines important facts about Canada's racist immigration and social policies, past and present. This is an important book that warrants consideration in any efforts to explore the psychological aspects of Canadian culture and immigration studies. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
67.
Pham Thi Minh Hanh Suthipong Sthiannopkao Dang The Ba Kyoung-Woong Kim 《Canadian Metallurgical Quarterly》2011,137(4):273-283
This study presents the first water quality indexes developed to evaluate surface water in Vietnam. The basic water quality index (WQIB) can be effectively used to evaluate the spatial and temporal variations of surface water quality as well as to identify water pollutants. The overall water quality index (WQIO) can provide additional information, particularly on toxic substances contributing to water pollution. The water quality indexes developed for this paper were applied to the national surface-water quality monitoring data taken from 1999 to 2007. Water pollutants were classified into three subcategories: organic and nutrients, particulates, and bacteria. Surface water in northern and central Vietnam was poor in quality and contained organic matter, nutrients, and bacteria. Water in the southern part was mainly polluted by bacteria. Trend analysis results reveal a deterioration in water quality in those provinces under pressure from rapid population growth, urbanization, and industrialization. Vietnam has established an official policy to ensure comprehensive nationwide water quality monitoring by 2020. The implementation of water quality indexes may provide the guiding data for sustainable water-resources management in Vietnam. 相似文献
68.
Dung Quang VU Fazal E. JALAL Mudassir IQBAL Dam Duc NGUYEN Duong Kien TRONG Indra PRAKASH Binh Thai PHAM 《Frontiers of Structural and Civil Engineering》2022,16(8):1003
In this study, we developed novel hybrid models namely Adaptive Neuro Fuzzy Inference System (ANFIS) optimized by Shuffled Complex Evolution (SCE) on the one hand and ANFIS with Artificial Bee Colony (ABC) on the other hand. These were used to predict compressive strength (Cs) of concrete relating to thirteen concrete-strength affecting parameters which are easy to determine in the laboratory. Field and laboratory tests data of 108 structural elements of 18 concrete bridges of the Ha Long-Van Don Expressway, Vietnam were considered. The dataset was randomly divided into a 70:30 ratio, for training (70%) and testing (30%) of the hybrid models. Performance of the developed fuzzy metaheuristic models was evaluated using standard statistical metrics: Correlation Coefficient (R), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE). The results showed that both of the novel models depict close agreement between experimental and predicted results. However, the ANFIS-ABC model reflected better convergence of the results and better performance compared to that of ANFIS-SCE in the prediction of the concrete Cs. Thus, the ANFIS-ABC model can be used for the quick and accurate estimation of compressive strength of concrete based on easily determined parameters for the design of civil engineering structures including bridges. 相似文献
69.
目的对越南预包装小食品的卫生安全情况进行分析,提出加强监管措施,保证进口食品安全。方法按国家标准方法检测沙门菌、志贺菌、金黄色葡萄球菌、菌落总数、大肠菌群等微生物指标;按标准要求检测酸价、过氧化值、铅、砷、汞、铜等理化指标。结果共检测预包装小食品样品238批,检出不合格32批,不合格率13.45%,不合格原因主要是菌落总数超标(24批),过氧化值超标(8批)。结论越南预包装小食品卫生安全质量不容乐观,应加强对越南进口小食品的检验监管。 相似文献
70.
本文根据我国加压过滤技术在越南选煤行业的首次成功应用,总结出工作压力、加药量以及入料粒度分布和浓度是决定加压过滤机处理效果的关键因素。该技术处理煤泥水效果显著,对于快速提高经济效益和社会效益、实施环境保护战略均具有深远意义,值得推广使用。 相似文献