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101.
Discretization: An Enabling Technique 总被引:26,自引:0,他引:26
102.
1081 otorhinolaryngological articles originating from departments in the British Isles, published in 8 leading English language speciality journals from 1985–1989 were analysed to determine author and content trends. Articles were classified as clinical investigative, laboratory based, case report or review/editorial. The institution of origin, total number of authors and identity of the first three were recorded. There is evidence of an increase in published British otolaryngological research and in the extent of researcher collaboration. 相似文献
103.
R Hussain HM Dockrell F Shahid S Zafar TJ Chiang 《Canadian Metallurgical Quarterly》1998,114(2):204-209
BACKGROUND: Cough associated with gastroesophageal reflux (GER) may originate in extrathoracic airway receptors made hypersensitive by acid-induced mucosal injury. OBJECTIVE: We investigated the role of laryngeal disease and dysfunction in the pathogenesis of GER-associated cough in nonasthmatic patients. METHODS: Seven patients with GER-associated cough were compared with 7 patients with GER but no cough. The patients underwent fiberoptic endoscopy for assessment of laryngitis and esophagitis (expressed by scores); esophageal manometry; 24-hour pH monitoring; lung function tests; and histamine inhalation challenge with assessment of bronchial threshold (concentration provoking 10% fall in FEV1 [PC10]), extrathoracic airway threshold (concentration provoking 25% fall in the maximal midinspiratory flow [PC25MIF50]), and cough threshold (concentration provoking 5 or more coughs PCcough). The patients were reevaluated after 3 months of medical treatment for GER. RESULTS: Patients with cough, compared with those without cough, had significantly higher laryngitis scores (P = .002), lower esophageal sphincter pressures, longer time with pH below 4 (P = .003), greater number of episodes of reflux longer than 5 minutes (P = .016), longer esophageal clearance time (P = .048), and significantly lower PC25MIF50 (P = .005) and PCcough (P = .008) values. Laryngitis score was significantly inversely related to either PCcough (P < .001) or PC25MIF50 (P <.01) but not to PC10. Laryngitis score, PC25MIF50, and PCcough were all closely related to GER severity. After GER treatment, laryngitis, PC25MIF50, and PCcough were all significantly improved. CONCLUSIONS: These findings suggest that GER-associated cough is strongly associated with laryngeal disease and dysfunction consequent to acid reflux injury in nonasthmatic patients. 相似文献
104.
105.
Measurement of soft x-ray emission from a low-energy plasma focus operated with nitrogen within the pressure range of 0.1–1.0 mbar is presented. The x-rays are detected by using an assembly of Quantrad Si PIN-diodes with differential filtering and with a multipinhole camera. In the 1.0–1.3 keV and 1.0–1.5 keV windows, the x-ray yield in 4 geometry is 1.03 J and 14.0 J, respectively, at a filling pressure of 0.25 mbar and the corresponding efficiencies are 0.04% and 1.22%. The total x-ray emission in 4 geometry is estimated at 21.8 J, which corresponds to the system efficiency of about 1.9%. The soft x-ray emission is found dominantly as a result of electron beam activity on the anode tip, which is confirmed by the images recorded by a pinhole camera. 相似文献
106.
107.
Hameed Hussain Saif Ur Rehman Malik Abdul Hameed Samee Ullah Khan Gage Bickler Nasro Min-Allah Muhammad Bilal Qureshi Limin Zhang Wang Yongji Nasir Ghani Joanna Kolodziej Albert Y. Zomaya Cheng-Zhong Xu Pavan Balaji Abhinav Vishnu Fredric Pinel Johnatan E. Pecero Dzmitry Kliazovich Pascal Bouvry Hongxiang Li Lizhe Wang Dan Chen Ammar Rayes 《Parallel Computing》2013
An efficient resource allocation is a fundamental requirement in high performance computing (HPC) systems. Many projects are dedicated to large-scale distributed computing systems that have designed and developed resource allocation mechanisms with a variety of architectures and services. In our study, through analysis, a comprehensive survey for describing resource allocation in various HPCs is reported. The aim of the work is to aggregate under a joint framework, the existing solutions for HPC to provide a thorough analysis and characteristics of the resource management and allocation strategies. Resource allocation mechanisms and strategies play a vital role towards the performance improvement of all the HPCs classifications. Therefore, a comprehensive discussion of widely used resource allocation strategies deployed in HPC environment is required, which is one of the motivations of this survey. Moreover, we have classified the HPC systems into three broad categories, namely: (a) cluster, (b) grid, and (c) cloud systems and define the characteristics of each class by extracting sets of common attributes. All of the aforementioned systems are cataloged into pure software and hybrid/hardware solutions. The system classification is used to identify approaches followed by the implementation of existing resource allocation strategies that are widely presented in the literature. 相似文献
108.
Zara Hamid Faisal Bashir Hussain Jae-Young Pyun 《Multimedia Tools and Applications》2016,75(14):8195-8216
Wireless Multimedia Sensor Networks (WMSNs) consist of networks of interconnected devices involved in retrieving multimedia content, such as, video, audio, acoustic, and scalar data, from the environment. The goal of these networks is optimized delivery of multimedia content based on quality of service (QoS) parameters, such as delay, jitter and distortion. In multimedia communications each packet has strict playout deadlines, thus late arriving packets and lost packets are treated equally. It is a challenging task to guarantee soft delay deadlines along with energy minimization, in resource constrained, high data rate WMSNs. Conventional layered approach does not provide optimal solution for guaranteeing soft delay deadlines due to the large amount of overhead involved at each layer. Cross layer approach is fast gaining popularity, due to its ability to exploit the interdependence between different layers, to guarantee QoS constraints like latency, distortion, reliability, throughput and error rate. The paper presents a channel utilization and delay aware routing (CUDAR) protocol for WMSNs. This protocol is based on a cross-layer approach, which provides soft end-to-end delay guarantees along with efficient utilization of resources. Extensive simulation analysis of CUDAR shows that it provides better delay guarantees than existing protocols and consequently reduces jitter and distortion in WMSN communication. 相似文献
109.
R Hussain 《Canadian Metallurgical Quarterly》1998,12(4):370-382
Abnormal interaction between low density lipoprotein receptors (LDLR) and their ligands, apolipoprotein E and B, causes decreased catabolism of lipoproteins which carry these apolipoproteins (VLDL, IDL and/or LDL) and thereby increased plasma concentrations of these. In familial hypercholesterolemia (FH), abnormal interaction is due to mutations in the LDLR gene, and in type III hyperlipidemia due to mutations in the apo E gene. A few mutations in the apolipoprotein B (apo B) gene have been described, of which the apo B-3,500Arg-Gln seems by far the most frequent, that causes defective binding to normal LDLR. The metabolic disorder associated with these mutations has been named familial defective apolipoprotein B-100 (FDB). The frequency of the apo B-3,500Arg-Gln mutation is particularly high in Central Europe (Switzerland) with lower frequencies south of the Alpes, in Russia and in Scandinavia. We found an incidence of 1/1250 of the mutation in Denmark (III), employing a DNA based assay optimized to allow detection of the mutation in very small amounts of DNA (I). Since other mutations in the receptor binding domain of the apo B-100 have been described, we developed another DNA based assay, employing DGGE technique, to screen for other mutations in the region of amino acid 3,456 to 3,553 (II). However, no other mutations but the apo B-3,500Arg-Gln have so far been detected in Danish hypercholesterolemic patients. In a study of 5 Danish families with FDB (46 heterozygous FDB patients and 57 unaffected relatives) we found that FDB patients had significantly increased mean cholesterol and LDL cholesterol concentrations, but with a wide range of variation and with approximately 30% having cholesterol concentrations below the 95th percentile for the general population (IV). This was confirmed in a compilation of data on 205 FDB patients from the Netherlands, Germany and Denmark (V). In this study we also compared the biochemical and clinical features of FDB with those of 101 Danish FH patients in whome FDB had been ruled out. Our data support, that the LDL cholesterol elevation is less pronounced in FDB than in FH and that the age-specific prevalence of atherosclerotic cardiovascular disease (CVD) is lower in FDB than in FH. In the compiled study of 205 FDB heterozygotes (V), we found that age, gender and genetic variation in the LDLR gene explained a considerable part of the between-individual variation in total and LDL cholesterol. We conducted a prospective study of the lipid lowering effect of pravastatin and gemfibrozil in 30 Danish FDB patients (VI). Together with other, retrospective, studies, we conclude that the cholesterol lowering effect of HMG-coA-reductase inhibitors, anion binding resins and nicotinic acid is fully comparable to that observed when treating FH patients and type IIa hypercholesterolemic patients, without clinical signs of FH. 相似文献
110.
Touqeer Haseeb Zaman Shakir Amin Rashid Hussain Mudassar Al-Turjman Fadi Bilal Muhammad 《The Journal of supercomputing》2021,77(12):14053-14089
The Journal of Supercomputing - The Internet of Things is a rapidly evolving technology in which interconnected computing devices and sensors share data over the network to decipher different... 相似文献