全文获取类型
收费全文 | 275篇 |
免费 | 8篇 |
国内免费 | 2篇 |
专业分类
化学 | 231篇 |
晶体学 | 3篇 |
力学 | 1篇 |
数学 | 9篇 |
物理学 | 41篇 |
出版年
2021年 | 1篇 |
2020年 | 3篇 |
2019年 | 3篇 |
2018年 | 3篇 |
2017年 | 1篇 |
2016年 | 1篇 |
2015年 | 7篇 |
2014年 | 5篇 |
2013年 | 2篇 |
2012年 | 18篇 |
2011年 | 14篇 |
2010年 | 13篇 |
2009年 | 6篇 |
2008年 | 23篇 |
2007年 | 26篇 |
2006年 | 8篇 |
2005年 | 13篇 |
2004年 | 17篇 |
2003年 | 8篇 |
2002年 | 14篇 |
2001年 | 5篇 |
2000年 | 5篇 |
1999年 | 2篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 6篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 5篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 14篇 |
1984年 | 6篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1977年 | 4篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1974年 | 3篇 |
1972年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有285条查询结果,搜索用时 144 毫秒
1.
2.
3.
4.
A note on a forcing related to the S‐space problem in the extension with a coherent Suslin tree 下载免费PDF全文
Teruyuki Yorioka 《Mathematical Logic Quarterly》2015,61(3):169-178
One of the main problems about is that whether a coherent Suslin tree forces that there are no S‐spaces under . We analyze a forcing notion related to this problem, and show that under , S forces that every topology on ω1 generated by a basis in the ground model is not an S‐topology. This supplements the previous work due to Stevo Todor?evi? [25]. 相似文献
5.
6.
It has long been known that homologous blood transfusion will result in a lot ofserious problems such as viral infections,for example AIDS,hepatitis,antigenicsensitization and GVHD;therefore aggressive testing of donor blood has beenadopted[1 ,2 ] .Even after this introduction,which is time-consuming and expensive,wecould not eliminate all the risks. In the wake of these kinds of pitfalls,production andclinical use of the blood substitutes have emerged.The essential aim of blood substitutei… 相似文献
7.
This paper describes the synthesis of protein microtube motors having a urease interior surface and highlights their nonbubble‐propelled behavior driven by enzymatic reaction (urea→NH3 and CO2). The precursor microtubes were prepared by layer‐by‐layer assembly using a track‐etched microporous polycarbonate membrane. Immobilization of a urease on the internal wall was accomplished using avidin–biotin interaction. The tubules swam smoothly in an aqueous media containing a physiological concentration of urea. Each tubule was rotating laterally while moving forward. It is remarkable that the microtubes were digested completely by proteases, demonstrating perfect biodegradability. 相似文献
8.
Teruyuki Hakoda Muhammed Alamgir Zaman Chowdhury Akihiko Shimada Koichi Hirota 《Plasma Chemistry and Plasma Processing》2009,29(6):549-557
The decomposition of dimethyl sulfide (DMS) at initial concentrations of 4.5–18.0 ppmv in air was studied under electron-beam
(EB) irradiation. Doses to decompose 90% of input DMS were 2.5 kGy for 4.5 ppmv, 3.4 kGy for 10.6 ppmv, and 3.9 kGy for 18.0 ppmv.
HCOOH, (CH3)2SO, and trace CH3OH and (CH3)2SO2 were produced as irradiation products in addition to CO2 and CO. Application of an O3 decomposition catalyst to an irradiated sample gas led to an enhancement in the oxidation of DMS and its products into CO2 and the decomposition of O3. For 10.6 ppmv DMS/air, the mineralization ratio increased from 41% via only EB irradiation to 100% via the combination treatment
at 6.3 kGy. The yield of CO2 to COx increased from 5.3 to 87.6% by combination with catalytic oxidation. This combination treatment enables the irradiation energy
used to deodorize gas streams containing DMS to be reduced. 相似文献
9.
Makoto Tsunoda Masanori Yamagishi Kazuhiro Imai Teruyuki Yanagisawa 《Analytical and bioanalytical chemistry》2009,394(4):947-952
A highly sensitive determination method was established for catecholamines (norepinephrine (NE), epinephrine, and dopamine)
with high-performance liquid chromatography-peroxyoxalate chemiluminescence reaction detection. In this study, the method
was applied to mouse plasma, and it was determined that only 10 μl of mouse plasma was necessary for the selective and reproducible
determination of catecholamines. Studies were then conducted in acute cardiovascular effects of sodium nitroprusside, nicardipine,
captopril (angiotensin-converting enzyme (ACE) inhibitor), candesartan, and olmesartan (type 1 angiotensin receptor antagonists
(AT1 antagonists)) by this method. Sodium nitroprusside and nicardipine elevated plasma NE concentrations significantly, whereas
the ACE inhibitor and the AT1 antagonists did not change plasma NE concentrations in anesthetized mice. These results suggested that angiotensin II-induced
augmentation may be mainly carried through the central baroreflex pathway. 相似文献
10.
Teruyuki Yorioka 《Mathematical Logic Quarterly》2006,52(2):203-216
We prove the iteration lemmata, which are the key lemmata to show that extensions by Pmax variations satisfy absoluteness for Π2-statements in the structure 〈H (ω 2), ∈, NSω 1, R 〉 for some set R of reals in L (ℝ), for the following statements: (1) The cofinality of the null ideal is ℵ1. (2) There exists a good basis of the strong measure zero ideal. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献