全文获取类型
收费全文 | 76篇 |
免费 | 4篇 |
国内免费 | 2篇 |
专业分类
电工技术 | 9篇 |
综合类 | 1篇 |
化学工业 | 7篇 |
金属工艺 | 3篇 |
机械仪表 | 6篇 |
建筑科学 | 3篇 |
轻工业 | 34篇 |
无线电 | 1篇 |
一般工业技术 | 5篇 |
冶金工业 | 3篇 |
原子能技术 | 1篇 |
自动化技术 | 9篇 |
出版年
2022年 | 1篇 |
2019年 | 1篇 |
2018年 | 2篇 |
2017年 | 1篇 |
2016年 | 6篇 |
2013年 | 6篇 |
2011年 | 2篇 |
2010年 | 6篇 |
2009年 | 4篇 |
2008年 | 2篇 |
2007年 | 1篇 |
2006年 | 1篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1990年 | 3篇 |
1989年 | 1篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1983年 | 2篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 2篇 |
1978年 | 6篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1972年 | 1篇 |
1971年 | 2篇 |
1965年 | 1篇 |
1955年 | 1篇 |
排序方式: 共有82条查询结果,搜索用时 31 毫秒
1.
2.
A LRT Control Method Using Sensor Information in Distribution Systems with a Large Amount of PVs and EVs 下载免费PDF全文
YOTARO NOSE TAKAO TSUJI TSUTOMU OYAMA TAKAHARU ITO KATSUYA ABE MASAHIRO MINAMI KAZUNARI ISHIBASHI 《Electrical Engineering in Japan》2017,198(4):51-62
It is of prime importance to maintain voltage profile within the proper range in distribution systems with a large amount of photovoltaics and electric vehicles (EVs). In particular, there is a possibility that line drop compensation (LDC) logic, which is utilized for the control of load ratio tap transformer (LRT) does not work properly when reverse power flow is included partially. Hence, in this paper, we have developed a new LRT control method based on the sensor information supposing that some section switchgears with sensors are introduced in the future distribution systems. Specifically, the extreme value of voltage profile is estimated by convergence calculation in the section between the section switchgear with sensor and LRT. Moreover, the voltage at the end node can be estimated by LDC method using sensor information of section switchgear. The proposed method was tested using a distribution system model and its effectiveness was shown. 相似文献
3.
Tetsuya OGAWA Hideki ISHIDA Nami MATSUDA Ayuko FUJIU Akiko MATSUDA Kyoko ITO Yoshitaka ANDO Kosaku NITTA 《Hemodialysis international. International Symposium on Home Hemodialysis》2009,13(3):301-306
Vascular calcification is associated with a poor prognosis in dialysis patients. It can be assessed with computed tomography but simple inoffice techniques may provide useful information. We compared the results obtained with a simple noninvasive technique with those obtained using multidetector computed tomography for aortic arch calcification volume (AoACV) in chronic hemodialysis (HD) patients. The enrolled study subjects were 63 (32 men and 31 women) maintenance HD patients. Calcification of the aortic arch was semiquantitatively estimated with a AoAC score (AoACS) on plain chest radiology. The AoACV was increased, with a mean value of 6.6 ranging from 0% to 36.5%. The coefficient of intraobserver variation was less than 2.5%. Aortic arch calcification score was highly correlated with AoACV (r=0.635, P<0.001). Multiple regression analysis showed age (F value=12.62, P<0.001) and pulse pressure (F value=4.54, P=0.037) to be significant independent determinants of AoACS. In conclusion, a simple measurement of AoACS may be useful for inoffice imaging to choose a therapeutic regimen in HD patients. 相似文献
4.
5.
6.
The relationship of shear stress versus shear rate of myosin B, soya protein components and mixtures of them in solution was investigated at varying temperatures. Scanning electron microscopic observations were also made at varying temperatures. Myosin B solution showed thixotropic flow behaviour at room temperature, while the solution of soya protein components and the mixture of myosin B and soya protein components were rheopectic. Upon heating the rheopectic property of soya protein components and the mixture of myosin B and soya protein components became thixotropic. Scanning electron microscopic observations revealed that a three dimensional network was formed prior to gel formation on heating for myosin B and also for soya protein components and the mixture of myosin B and soya protein components. The results suggest that in these systems thixotropic flow behaviour precedes the formation of a protein gel on heating. 相似文献
7.
SUNAO MORI AKIKO UCHIDA SHUHEI YAMAMOTO ASMA SULTANA RYUICHI TATSUMI WATARU MIZUNOYA ATSUSHI SUZUKI YOSHIHIDE IKEUCHI 《Journal of Food Biochemistry》2007,31(3):328-342
This study evaluated the effect of high pressure on rabbit skeletal muscle, specifically on the production of inosinic acid (IMP), one of “umami” components, and on the activity of adenosine triphosphate (AMP) deaminase, which plays a role in the conversion of AMP to IMP. By increasing the pressure (0.1 to 300 MPa), nucleotide analysis showed that IMP content in muscle increased instantly with a concomitant decrease in ATP content. The IMP content of muscle at 300 MPa was approximately 15% higher than with lower pressures (0.1–200 MPa) when stored for 1 week at 4C after pressurization. These results suggested that the metabolism of nucleotides in muscle was not significantly impaired by pressure treatment. At 300 MPa, AMP deaminase maintained approximately 70% of the activity at 0.1 MPa. In contrast, the activity of purified AMP deaminase was completely lost at 200 MPa, and irreversible conformational changes were observed by in situ fluorescence spectroscopy. These results indicated that purified AMP deaminase was irreversibly denatured under pressure as high as 300–400 MPa. 相似文献
8.
A. BELÉIA S.H. PRUDENCIO-FERREIRA F. YAMASHITA T.M. SAKAMOTO L. ITO 《Journal of texture studies》2004,35(5):542-553
Two cassava varieties, at three harvesting ages, 6, 12 and 24 months, were analyzed for sensory flavor and texture development. Maximum shear force, Texture Profile Analysis (TPA) and water absorption during cooking were determined at various sampling times. Changes during cooking were described by pseudo‐zero order models for water absorption, flavor and texture development for the fast cooking samples. The 24‐month‐old roots had higher variability and never reached optimum texture or flavor development. Significant pseudo first order models could represent hardness, cohesiveness and chewiness of the TPA, while springiness and adhesiveness varied in a non‐linear fashion. Maximum shear force was 111 N for raw samples and 8.1 N for samples that cooked in less than 25 min. Samples that required longer cook time had on the average a maximum shear force of 19 N. 相似文献
9.
The feedback stabilization problem for a non-linear elastic distributed parameter system including a destabilizing effect is studied. The model is formulated as an evolution equation in a Hilbert space. Semigroup theory is used to investigate an initial value problem for the equation. Moreover, a control system with a finite dimensional controller is constructed. It is then proved that the state of the overall system converges to zero with a desirable exponential decay rate as time tends to infinity. 相似文献
10.
KIYOSHI NAGATA TOMOYUKI OHYAMA HIROAKI SATO TOMOAKI ITO ATSUSHI ETO TAKAYUKI KOBAYASHI 《Electrical Engineering in Japan》2016,196(4):32-39
We developed the 550‐kV disconnectors that strengthened earthquake proofing by the addition of the damper unit and weight reduction of conductive part based on the damage of the 550‐kV disconnectors by the Great East Japan earthquake (March 11, 2011) and inspected the earthquake proofing performance by shake table test. In shake table test, we performed the test by the artificial seismic wave that varied in phase characteristic in addition to the test by resonance method. And, in a high‐level earthquake area, we analyzed it about the influence that a phase characteristic of the artificial seismic wave gave to stress to occur in disconnectors. As a result, it is thought that the stress to occur in disconnectors is decided by a primary natural frequency basically because a bending strain to occur to the disconnectors in the time when the resonance frequency ingredient becomes the big acceleration response value grows big. But, on a particular phase condition, it was confirmed that the bending strain to occur in disconnectors might grow big conspicuously. As for this, the possibility is thought about by influence of higher natural frequency doing superposition. 相似文献