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11.
Pressure-sensitive paint (PSP) is a relatively new aerodynamic measurement tool with the unique capability of providing a field measurement of pressure over a test surface. An introductory review of this technology is presented, which is confined to the application of the PSP method to aircraft development wind tunnel testing. This is at present the primary application area and thus the focus of research on the use of the method, and is the authors' own area of research. Described are PSP fundamentals, the various elements comprising PSP technology, and current limitations and considerations in applying this technology. Experimental results are presented to illustrate the present capability of the method. The few publications currently available on this subject in the open literature are also referenced. 相似文献
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将电光调Q Nd:YAG激光脉冲聚焦于油漆样品表面以产生激光诱导等离子体。等离子体的光辐射经过一组透镜收集进入单色仪并由光电倍增管探测。通过对等离子体辐射光谱的研究,能够实现对油漆样品中重金属元素含量的快速定性分析。实验分析了多种市售油漆中重金属元素Pb, Cu, Cr, Mn的含量。实验表明:对于同一种类的油漆样品,在相同检测条件下,重金属元素的特征光谱线强度与元素质量分数成正比,因此利用激光诱导击穿光谱来快速分析油漆中重金属元素含量是完全可行的。 相似文献
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Saeed Farrokhpay 《应用光谱学评论》2013,48(3):233-243
Abstract: This article presents a review of the published articles related to the novel application of spectroscopy and microscopy methods in paint and coatings quality evaluation. Traditional and simple techniques have been used in paint and coating industry for many years and proven to be effective. However, the paint and coating industry faces new formulations with nontraditional applications. Therefore, the industry needs to adjust itself with the current sophisticated production and testing methods. There are a number of modern microscopy and spectroscopy techniques that can be utilized in the paint and coating industry for a better understanding of the product quality and/or application performance. This, in particular, is highly applicable in modern and nontraditional applications such as nanotechnology and smart coatings. Though importance of spectroscopy and microscopy methods is being increasingly recognized in the industry, there is no current comprehensive review available to highlight the need for novel application of these techniques in surface coatings evaluations. 相似文献
16.
Makoto Obata Noriko Matsuura Kazunori Mitsuo Hiroki Nagai Keisuke Asai Masafumi Harada Shiho Hirohara Masao Tanihara Shigenobu Yano 《Journal of polymer science. Part A, Polymer chemistry》2010,48(3):663-670
A novel methacrylate monomer bearing 5,10,15,20‐tetraphenylporphyrinato palladium(II) (PdTPP) (monomer 1a ) was synthesized and copolymerized with isobutyl methacrylate (IBM) and 2,2,2‐trifluoroethyl methacrylate (TFEM) to give poly (IBM‐co‐TFEM) bearing PdTPP (copolymer 2a ) as a dye‐conjugated oxygen‐permeable polymer for pressure‐sensitive paint applications. The introduction of PdTPP into copolymer 2a was confirmed by UV–vis spectroscopy and extended X‐ray absorption fine structure analysis. The Stern–Volmer plots of the copolymer 2a and a mixture of PdTPP and poly(IBM‐co‐TFEM) both showed downward curvature, unlike that of the platinum complex analogue (copolymer 2b ) previously reported. The plots were successfully fitted with a two‐site model to give two distinct Stern–Volmer constants (KSV1 and KSV2) and the partition ratio f1. Interestingly, the f1 values for the copolymer 2a were almost constant at about 0.98, whereas those of the mixture of PdTPP and poly(IBM‐co‐TFEM) increased from 0.889 to 0.967 as the temperature was increased. This finding suggests that there are two distinct microheterogeneities, one temperature‐dependent and the other temperature‐independent, in the mixture of PdTPP and poly(IBM‐co‐TFEM). The dye‐conjugation approach effectively eliminates the temperature‐dependent, but not the temperature‐independent microheterogeneity. The luminescence decays of copolymers 2a and 2b and the corresponding mixtures in the absence of oxygen indicated that the temperature‐dependent microheterogeneity involves an oxygen diffusion process, whereas the temperature‐independent one appears to be inherent nature in PdTPP. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 663–670, 2010 相似文献
17.
Ichirou Yamaguchi Masayuki Yokota Takasi Ida Mizuki Sunaga Koichi Kobayashi 《Optical Review》2007,14(6):362-364
The state of drying paint is monitored from the dynamic behaviors of the speckle pattern arising from laser illumination of
the region inspected. Temporal variation of the peak height of the cross-correlation function between successive frames taken
with a fixed interval is plotted until the peak maintains a stationary maximum value. We used a speckle pattern in the diffraction
field for monitoring of a single region and that in the image field for simultaneous monitoring of various regions. Both the
normal and the phase-only algorithms were compared for cross-correlation computation. The former showed more distinct variation
of peak height. 相似文献
18.
Jacopo La Nasa Marco Zanaboni Daniele Uldanck Ilaria Degano Francesca Modugno Hartmut Kutzke Eva Storevik Tveit Biljana Topalova-Casadiego Maria Perla Colombini 《Analytica chimica acta》2015
Modern oil paints, introduced at the beginning of the 20th century, differ from those classically used in antiquity in their chemical and compositional features. The main ingredients were still traditional drying oils, often used in mixtures with less expensive oils and added with several classes of additives. Consequently, detailed lipid profiling, together with the study of lipid degradation processes, is essential for the knowledge and the conservation of paint materials used in modern and contemporary art. 相似文献
19.
微波炉溶样-原子吸收光谱法测定油漆中铅含量 总被引:1,自引:0,他引:1
采用密封罐密封,微波炉加热消化,原子吸收分光光度法测定了油漆中的铅含量。本文简单快速、无污染。回眉率98.7%-104% 相似文献
20.
Makoto Obata Yurie Tanaka Naoko Araki Shiho Hirohara Shigenobu Yano Kazunori Mitsuo Keisuke Asai Masafumi Harada Toyoji Kakuchi Chikara Ohtsuki 《Journal of polymer science. Part A, Polymer chemistry》2005,43(14):2997-3006
Pressure‐sensitive paint (PSP), which consists of luminescent molecules embedded in an oxygen‐permeable polymer, has been developed for use in wind‐tunnel experiments. To improve the PSP technique, a novel luminescent methacrylate monomer, 5‐[4‐(2‐methacryloyloxyethoxycarbonyl)phenyl]‐10,15,20‐triphenylporphinato platinum(II), was synthesized and copolymerized with isobutyl methacrylate and 2,2,2‐trifluoroethyl methacrylate to produce a dye‐pendant copolymer ( 2 ). The introduction of 5,10,15,20‐tetraphenylporphinato platinum(II) (PtTPP) dye into 2 was confirmed by ultraviolet–visible spectroscopy and extended X‐ray absorption fine structure measurements. The extent of PtTPP dye incorporation in 2 was proportional to the molar fraction of the PtTPP‐pendant methacrylate monomer in the feed. The oxygen‐sensing property of 2 was compared with that of a PSP consisting of PtTPP dye embedded in poly(isobutyl‐co‐2,2,2‐trifluoroethyl methacrylate). Although the simple mixture of PtTPP and poly(isobutyl‐co‐2,2,2‐trifluoroethyl methacrylate) showed a marked deviation from a single Stern–Volmer relation, novel copolymer 2 gave a highly linear Stern–Volmer plot. This was unequivocal evidence of dye conjugation on the oxygen‐sensing polymer film. © 2005Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 2997–3006, 2005 相似文献