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The human right clavicle tends to be shorter than the left. A range of possible explanations can be advanced to account for this asymmetry. In the present work, clavicular morphology was studied in a medieval skeletal assemblage from Wharram Percy, England, with the aim of evaluating these competing explanations. At Wharram Percy, as anticipated, the right clavicle tended to be shorter. Patterns of asymmetry in curvature, robusticity, vascularization, and in the morphology of ligament and muscle attachment sites were also studied. The patterning in these data at Wharram Percy is consistent with inhibition of longitudinal growth of the clavicle on the dominant side due to lateral bias in mechanical loading, particularly in axial compression. Copyright © 1999 John Wiley & Sons, Ltd. 相似文献
84.
Paola Ricciardi Philippe Colomban Aurlie Tourni Michele Macchiarola Naceur Ayed 《Journal of archaeological science》2009,36(11):2551-2559
Ancient mosaic tesserae are a range of materials of very varied and complex nature, including pottery, stone and glass. Raman spectroscopy is a powerful tool for the analysis of all these kinds of materials. In the particular case of glasses, this technique can be used both for a study of surface weathering and for the characterization of bulk structure, but it has not yet been extensively used for the characterization of mosaic glass tesserae. We carried out Raman analyses on a set of Roman and Late Antiquity period mosaic glass samples, which allowed a good characterization of both the glass matrix and the crystalline inclusions. All the samples show the typical Raman signatures of soda-lime-silicate glasses. Several crystalline phases were also identified, being relics of raw materials used during the glass manufacturing process, such as quartz and feldspars, or linked to the glass color/opacification, such as bindheimite and cuprite. The analyses also led to the identification in some blue, turquoise and green tesserae of calcium antimonate, whose Raman signature has only recently been recognized in the scientific literature on mosaic glasses. Some emphasis is given to the analysis of red lead-containing tesserae, colored with Cu+ ions or even Cu0 (or Au0) metal nanoparticles. Samples with peculiar compositions, as well as “modern” (and restoration) samples, could quite easily be distinguished from the ancient ones by their Raman spectra. 相似文献
85.
Christina A. Conlee Michele R. Buzon Aldo Noriega Gutierrez Antonio Simonetti Robert A. Creaser 《Journal of archaeological science》2009,36(12):2755-2764
During the several thousand years of human occupation in the Nasca drainage on the south coast of Peru, population movement into and out of the region impacted the formation and organization of society, as well as contributed to major cultural transformations. This study identifies foreign versus local individuals through the investigation of burial practices and strontium isotope analysis of human remains from the sites of La Tiza and Pajonal Alto dating from the Early Intermediate Period through the Late Intermediate Period (A.D. 1–1476). Of the ten samples analyzed, two individuals dating to the Middle Horizon were identified as foreigners. One of these individuals was buried in a new elite tomb type providing additional evidence that the Wari state incorporated Nasca into its realm. Two headless individuals, one dating to Middle Nasca with clear evidence of decapitation, and another dating to the Late Intermediate Period who was likely decapitated, were both locals. This suggests the practice of decapitation took place among local groups, and that the practice of decapitation and the use of heads as ritual items or trophies may have continued later in time than previously thought. 相似文献
86.
Michele Betti Andrea Borghini Sonia Boschi Alberto Ciavattone Andrea Vignoli 《Journal of Earthquake Engineering》2018,22(8):62-95
ABSTRACTThis paper discusses the seismic risk assessment of a Basilica-type church according to the provisions of the Italian Guidelines. A comparison between the results obtained with local and global approaches is reported, based on a knowledge process aimed to characterize the geometric and mechanical parameters required for a reliable structural analysis. To perform the global analyses the finite element technique was employed, with proper assumptions to account for the nonlinear behavior of masonry. Illustrating a case study, the paper critically discusses about the employability of pushover analysis methods for the seismic assessment of basilica-type churches. 相似文献
87.
Douglas Ford 《国际历史评论》2013,35(4):725-752
This article traces the development of US air intelligence on the tactics and weapons of Japan's fighter forces during the Pacific War. During the opening stages of the conflict, the US Army Air Forces (USAAF) struggled to set up an intelligence network in the Pacific theater because they were unprepared to wage a large scale conflict against the Japanese. Prior to December 1941, most American air commanders expected Japan to refrain from initiating hostilities with the western powers, and were thus caught unawares when faced with the onslaught of the Japanese air services. The setbacks which US forces suffered in the western Pacific regions during the opening stages of the conflict persuaded air commanders to create a more efficient apparatus that was designed to make good use of the information which aircrews gathered in their encounters with enemy forces. By the end of 1942, observations of the Japanese air forces' performance in combat enabled the Americans to acquire a rudimentary knowledge of the tactical procedures which pilots needed to follow in order to neutralize their opponent. After 1943, the tide of the air war turned decisively in favor of the Allies, owing to the fact that Japan's strengths were stretched to the limit, and its industries could not replace the planes and equipment which the armed forces had lost during the battle of Midway and the Solomons campaign. As the conflict progressed, US aviators noticed how the Japanese had suffered losses to the point where they could no longer defend the skies above their occupied territories, as evidenced by the fact that enemy interceptors were appearing in ever-decreasing numbers. The development motivated airmen to seek ways to destroy the remnants of Japan's air forces as quickly as possible and thereby hasten the tempo of the campaign in the Pacific theater. However, the USAAF remained mindful of the difficulties they faced in fighting the Japanese. This was mainly because the intelligence secured via encounters with enemy forces continued to suggest that they still possessed a good number of serviceable planes, along with trained pilots who were able to cause significant disruption for US air missions. The evidence was taken as a clear indication that the Americans needed to deploy sufficient aircraft strengths and simultaneously develop the tactical methods needed to protect friendly forces against unnecessary casualties. 相似文献
88.
Gordon B. Ford Jr. 《Symbolae Osloenses / auspiciis Societatis Graeco-Latinae》2013,87(1):123-124
The essential question in this article is why Cyprian chose to suffer martyrdom sub Valeriano and not sub Decio eight years earlier. In his letters Cyprian defended what he called his withdrawal from the persecutors by referring to his obedience to God but also to his responsibilities as a bishop. It is claimed that Cyprian both in 250 and 258 acted as a patronus for his congregation, his behaviour being typical of an aristocratic pattern of behaviour. 相似文献
89.
Michele Trimarchi 《International Journal of Heritage Studies》2013,19(5):401-415
The paper examines the hypothesis of vertical integration between heritage and the performed arts. This is often a response to scarcity, and in many cases it implies conversion of heritage back to its original function. Various issues arise, due to the dilemma given by the potential cost for future generations of a more intensive present exploitation. On the other hand, many benefits are likely to be generated on cultural, economic and financial grounds. Furthermore, the decision‐making processes become quite complex, and adequate changes in regulation are necessary in order to make such a vertical integration consistent with culturally sustainable growth. 相似文献
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