全文获取类型
收费全文 | 158篇 |
免费 | 7篇 |
专业分类
化学 | 97篇 |
力学 | 1篇 |
数学 | 19篇 |
物理学 | 48篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 2篇 |
2020年 | 9篇 |
2018年 | 4篇 |
2017年 | 4篇 |
2016年 | 6篇 |
2015年 | 10篇 |
2014年 | 4篇 |
2013年 | 11篇 |
2012年 | 6篇 |
2011年 | 8篇 |
2010年 | 3篇 |
2009年 | 2篇 |
2008年 | 10篇 |
2007年 | 5篇 |
2006年 | 9篇 |
2005年 | 6篇 |
2004年 | 10篇 |
2003年 | 6篇 |
2002年 | 5篇 |
2000年 | 5篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1978年 | 3篇 |
1977年 | 1篇 |
1976年 | 3篇 |
1974年 | 2篇 |
1969年 | 2篇 |
排序方式: 共有165条查询结果,搜索用时 31 毫秒
1.
2.
Huynh Phuong Truc Tran Trinh Pham Ngoc Dinh Binh Thanh Nguyen Linh Thi Truc Truong Loan Thi Hong Tran Anh Tuan Ho Dung Manh Van Nguyen Dong 《Journal of Radioanalytical and Nuclear Chemistry》2020,324(2):663-671
Journal of Radioanalytical and Nuclear Chemistry - The aim of this study was to find trace elements that increase risk of breast cancer based on the deviation of the concentration of trace elements... 相似文献
3.
Elemental Sulfur Disproportionation in the Redox Condensation Reaction between o‐Halonitrobenzenes and Benzylamines 下载免费PDF全文
Dr. Thanh Binh Nguyen Dr. Ludmila Ermolenko Dr. Pascal Retailleau Dr. Ali Al‐Mourabit 《Angewandte Chemie (International ed. in English)》2014,53(50):13808-13812
The disproportionation of elemental sulfur at moderate temperatures is investigated in the redox condensation involving o‐halonitrobenzenes 1 and benzylamines 2 . As a redox moderator, elemental sulfur plays the dual role of both electron donor and acceptor, generating its lowest and highest oxidation states: S?2 (sulfide equivalent) in benzothiazole 3 and S+6 (sulfate equivalent) in sulfamate 4 , and filling the electron gap of the global redox condensation process. Along with this process, a cascade of reactions of reduction of the nitro group of 1 , oxidation of the aminomethyl group of 2 , metal‐free aromatic halogen substitution, and condensation finally led to 2‐arylbenzothiazoles 3 . 相似文献
4.
Binh Thi Thanh Nguyen Jin Qiang Ang Chee-Seng Toh 《Electrochemistry communications》2009,11(10):1861-1864
A model K+ sensor using Prussian blue nanotubes is fabricated by electrochemical deposition of Prussian blue (PB) within the nanochannels of a porous metal-coated membrane with partially covered pore openings. The PB nanotube sensor exhibits excellent stability giving reproducible peak potentials up to 500 measurement cycles, a very low detection limit of 2.0 × 10−8 M and extremely wide logarithmic linear ranges between 5.0 × 10−8–7.0 × 10−4 M and 7.0 × 10−4–1.0 M. Negligible interferences by Na+, Mg2+ and Ca2+ are observed and a rapid analysis time of 30 s is readily achieved. The ease of electrodeposition, high stability of PB nanotubes and outstanding analytical performance which surpasses conventional PB voltammetric and potentiometric sensors demonstrates potential sensing applications including ion sensors and biosensors using PB and other metal hexacyanoferrate nanotubes. 相似文献
5.
Ngoc Binh Vo Le Anh Nguyen Tung Lam Pham Duy Tien Doan Thanh Binh Nguyen Quoc Anh Ngo 《Tetrahedron letters》2017,58(25):2503-2506
A procedure to exclusively obtain 3′S-cyanoanhydrovinblastine 12 from two naturally occurring vinca-alkaloids (catharanthine and vindoline) in one step with good yield is described. Stereoselective reductions of 12, providing straightforward access to three new vinca-alkaloids, including two diastereomers 3′S-cyano-(4′R,5′-dihydro)-anhydrovinblastine and 3′S-cyano-(4′S,5′-dihydro)-anhydrovinblastine as well as (3′S-aminomethyl)-(4′S,5′-dihydro)-anhydrovinblastine in good yields is also reported. 相似文献
6.
Binh Khanh Mai Prof. Yongho Kim 《Chemistry (Weinheim an der Bergstrasse, Germany)》2013,19(11):3568-3572
7.
G. L. Zhang C. L. Zhang H. Q. Zhang C. J. Lin D. Y. Pang X. K. Wu H. M. Jia G. P. An Z. D. Wu X. X. Xu F. Yang Z. H. Liu S. Kubono H. Yamaguchi S. Hayakawa D. N. Binh Y. K. Kwon N. Iwasa M. Mazzocco M. La Commara M. Romoli C. Signorini 《The European Physical Journal A - Hadrons and Nuclei》2012,48(5):1-7
The quasi-elastic scattering angular distribution of the proton drip line nucleus 17F on a 12C target was measured at 60 MeV. The experimental data have been compared with the theoretical analysis based onto optical model and continuum discretized coupled channels (CDCC). The couplings between breakup and elastic scattering channels, and between inelastic and elastic scattering channels resulted very weak. In order to explore the breakup effects the total reaction cross-section was deduced from the angular distribution of the quasi-elastic scattering data, and then compared with the existing data for the other weakly and tightly bound nuclei on 12C target using a universal function. From this comparison, we concluded that the breakup effect is not important for weakly bound projectiles on the light target as obtained also with the CDCC analysis. 相似文献
8.
9.
Smirnov M. S. Ovchinnikov O. V. Zvyagin A. I. Tikhomirov S. A. Ponyavina A. N. Povedailo V. A. Binh Nguyen Thanh Minh Pham Hong 《Optics and Spectroscopy》2022,130(3):224-231
Optics and Spectroscopy - The mechanism of the nonlinear optical response of colloidal solutions of Ag2S quantum dots passivated with thioglycolic acid molecules is considered. Appearance of... 相似文献
10.
We present the first realisation of ferromagnetic Fe nanotips. Studies of the field emitted beams of electrons and metallic ions above and under the Curie temperature Tc were made. We have observed a reversible splitting of the electron beams when the temperature crossed through Tc and multiple spot patterns for the emitted metallic ion beams. These phenomena were not observed with Fe microtips or non-magnetic nanotips and thus were correlated to a strong magnetic interaction at the atomic scale apex of the nanotips. The Fe nanotips constitute an atomic scale beam-splitter. 相似文献