X
Search Filters
Format Format
Format Format
X
Sort by Item Count (A-Z)
Filter by Count
Journal Article (2184) 2184
Patent (444) 444
Magazine Article (169) 169
Dissertation (21) 21
Conference Proceeding (12) 12
Book / eBook (8) 8
Book Chapter (6) 6
Newspaper Article (1) 1
Paper (1) 1
Publication (1) 1
Reference (1) 1
more...
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
electricity (195) 195
electric communication technique (104) 104
pictorial communication, e.g. television (77) 77
physics (65) 65
performing operations (58) 58
transporting (58) 58
basic electric elements (57) 57
chemistry (56) 56
general tagging of cross-sectional technologies spanning over several sections of the ipc (53) 53
general tagging of new technological developments (53) 53
metallurgy (53) 53
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (53) 53
technologies or applications for mitigation or adaptation againstclimate change (53) 53
友情 (53) 53
transmission of digital information, e.g. telegraphiccommunication (51) 51
heating (47) 47
文学作品 (47) 47
blasting (46) 46
human necessities (46) 46
lighting (46) 46
mechanical engineering (46) 46
weapons (46) 46
文学 (39) 39
学生 (38) 38
语文学习 (38) 38
作文 (35) 35
index medicus (34) 34
measuring (34) 34
testing (34) 34
conversion or distribution of electric power (33) 33
generation (33) 33
devices using stimulated emission (31) 31
阅读知识 (31) 31
朋友 (29) 29
课外阅读 (28) 28
combustion apparatus (27) 27
combustion processes (27) 27
consuming waste products by combustion (27) 27
cremation furnaces (27) 27
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (26) 26
语文教学 (26) 26
fixed constructions (24) 24
毛泽东 (22) 22
诗集 (22) 22
中学生 (21) 21
诗词 (21) 21
forestry (20) 20
教师 (20) 20
诗歌 (20) 20
agriculture (19) 19
investigating or analysing materials by determining theirchemical or physical properties (19) 19
analysis (18) 18
animal husbandry (18) 18
fishing (18) 18
hunting (18) 18
trapping (18) 18
爱情 (18) 18
老师 (18) 18
animals (17) 17
清代 (17) 17
humans (16) 16
materials science, multidisciplinary (16) 16
treatment of water, waste water, sewage, or sludge (16) 16
右倾机会主义 (16) 16
小学生 (16) 16
现代文学 (16) 16
processes or means, e.g. batteries, for the direct conversionof chemical into electrical energy (15) 15
中国 (15) 15
学习 (15) 15
毛主席 (15) 15
chemistry, multidisciplinary (14) 14
毛泽东思想 (14) 14
马克思主义 (14) 14
calculating (13) 13
climate change mitigation technologies in the production orprocessing of goods (13) 13
computing (13) 13
counting (13) 13
hygiene (13) 13
medical or veterinary science (13) 13
nanoscience & nanotechnology (13) 13
physical or chemical processes or apparatus in general (13) 13
人生 (13) 13
construction of roads, railways, or bridges (12) 12
engine plants in general (12) 12
flues (12) 12
machines or engines in general (12) 12
removal or treatment of combustion products or combustionresidues (12) 12
separation (12) 12
steam engines (12) 12
technologies for adaptation to climate change (12) 12
个人 (12) 12
中学 (12) 12
同学 (12) 12
孩子 (12) 12
生活 (12) 12
阅读 (12) 12
assembly of bridges (11) 11
cancer (11) 11
construction of bridges (11) 11
installation of electric cables or lines, or of combinedoptical and electric cables or lines (11) 11
more...
Library Location Library Location
Language Language
Language Language
X
Sort by Item Count (A-Z)
Filter by Count
Chinese (2497) 2497
English (666) 666
French (50) 50
German (34) 34
Korean (8) 8
Japanese (4) 4
Danish (2) 2
Portuguese (2) 2
Spanish (1) 1
more...
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


思维与智慧:下半月, ISSN 1006-3587, 2011, Issue 6, pp. 48 - 49
女儿黑笛和她最好的朋友苔丽的生日只差一星期,当苔丽9岁生日时,女儿带我去给她的朋友买礼物。 
友情 | 礼物 | 女儿 | 生日 | 朋友
Journal Article
快乐作文(中年级版), ISSN 1673-0666, 2017, Issue 5, pp. 24 - 24
前几天,我和同学们每个人都收到了刘天宇和曾庆豪的爸爸妈妈送给大家的友情蛋糕。 
作文 | 语文学习 | 阅读知识 | 小学生
Journal Article
Chemical Communications : Chem Comm, ISSN 1359-7345, 01/2018, Volume 54, Issue 14, pp. 1676 - 1685
Recent advances in transition metal-catalyzed selective C–H functionalization of indoles have garnered tremendous attention. Great efforts have been devoted to... 
Regioselectivity | Indoles
Journal Article
by 杨峰
中小学心理健康教育, ISSN 1671-2684, 2018, Issue 7, pp. 37 - 41
Journal Article
Angewandte Chemie International Edition, ISSN 1433-7851, 03/2017, Volume 56, Issue 14, pp. 3966 - 3971
An effective and practical strategy has been established for the direct and site‐selective arylation of indoles at the C4 and C5 positions with the aid of a... 
regioselectivity | copper | palladium | indoles | arylation | ROOM-TEMPERATURE | DIAZONAMIDE-A | DIARYLIODONIUM SALTS | 2ND TOTAL-SYNTHESIS | CHEMISTRY, MULTIDISCIPLINARY | FUNCTIONALIZATION | MILD CONDITIONS | BOND ARYLATION | REGIOSELECTIVE SYNTHESIS | N-PIVALOYLINDOLES | CATALYZED DIRECT ARYLATION | Chemical synthesis | Palladium | Transformation | Indoles | Indole | Functional groups
Journal Article
Journal of the American Chemical Society, ISSN 0002-7863, 07/2016, Volume 138, Issue 28, pp. 8734 - 8737
The first example of direct and site-selective arylation of indoles at the C6 position has been reported. The key to this high regioselectivity is the... 
FUNCTIONALIZATION | MILD | ROOM-TEMPERATURE | ACTIVATION | ARENES | H BOND ARYLATION | DIARYLIODONIUM SALTS | N-PIVALOYLINDOLES | ALKYNES | CHEMISTRY, MULTIDISCIPLINARY | BORYLATION | Arylation | Research | Chemical properties | Catalysis | Copper | Indole
Journal Article
Chemical Communications, ISSN 1359-7345, 11/2012, Volume 48, Issue 86, pp. 10678 - 10680
A copper-catalyzed approach for the synthesis of N-aryl acridones via sp(2) C-H bond amination using air as oxidant under neutral conditions is disclosed. This... 
Acridones - chemistry | Copper - chemistry | Amination | Oxidation-Reduction | Acridones - chemical synthesis | Catalysis | Hydrogen - chemistry | Carbon - chemistry
Journal Article
Chemical Communications, ISSN 1359-7345, 2/2018, Volume 54, Issue 14, pp. 1676 - 1685
Recent advances in transition metal-catalyzed selective C-H functionalization of indoles have garnered tremendous attention. Great efforts have been devoted to... 
DUAL C-H | ROOM-TEMPERATURE | 2-SUBSTITUTED INDOLES | C-3 ARYLATION | DICTYODENDRINS F | SELECTIVE ARYLATION | N-PIVALOYLINDOLES | H BOND FUNCTIONALIZATION | CHEMISTRY, MULTIDISCIPLINARY | ORTHO-METALATION | CATALYZED DIRECT ARYLATION
Journal Article
Journal Article
Journal of the American Chemical Society, ISSN 0002-7863, 01/2016, Volume 138, Issue 2, pp. 495 - 498
In the past decade, direct C–H arylation of indoles has been developed with high selectivity at the C2 and C3 positions via transition-metal-catalyzed... 
FUNCTIONALIZATION | ROOM-TEMPERATURE | ACTIVATION | C-7 POSITION | BOND ALKYLATION | ARENES | INDOLINES | ALPHA-AMINO-ACIDS | PD CATALYSTS | LIGAND | CHEMISTRY, MULTIDISCIPLINARY
Journal Article
Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, 04/2019, Volume 57, Issue 8, p. 907
Differing from the moisture-sensitive [alpha]-amino acid N-carboxyanhydrides (AA-NCAs) monomers, N-phenoxycarbonyl [alpha]-amino acids (AA-NPCs) can be... 
Hydroxides | Polymerization | Biopolymers
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 09/2015, Volume 80, Issue 17, pp. 8782 - 8789
A general copper/air catalytic system for selectively oxidative C–C bond cleavage of 1,2-diarylethan-1-one has been developed, giving aromatic aldehydes and... 
ARYL BROMIDES | ALCOHOLS | KETONES | ACTIVATION | CARBON-CARBON BOND | AMIDE SYNTHESIS | CHEMISTRY, ORGANIC | ALDEHYDES | OXIDATIVE CLEAVAGE | EFFICIENT | DIRECT AMIDATION | Chemical bonds | Chemical reactions | Amines | Research | Chemical properties | Copper
Journal Article
长江文艺, ISSN 0528-838X, 2013, Issue 3, pp. 107 - 109
最好的时刻 五月花香,敲打着 空空的头脑 像十年前,一百年前一样。 
文学作品 | 诗歌 | 有请流星(11首) | 现代文学
Journal Article
Small, ISSN 1613-6810, 01/2017, Volume 13, Issue 2, pp. np - n/a
Journal Article
IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, 4/2019, pp. 1 - 1
An improved algorithm with feature selection and neural network classification is proposed in this paper to investigate the fault diagnosis problem of rotating... 
Fault diagnosis | Feature Selection | Neural Network | Rotating Machinery | Feature Vector | Neural networks | Process control | Feature extraction | Classification algorithms | Machinery | Standards
Journal Article
Measurement, ISSN 0263-2241, 02/2020, Volume 152, p. 107368
This paper proposes a precise terrain occlusion prediction algorithm based on stereo image sequences from the China's Chang'e-4 Yutu-2 rover’ visual system,... 
Terrain occlusion angle | Loop-closed block bundle adjustment | Yutu-2 lunar rover | Camera self-calibration | Skyline automatic extraction
Journal Article
No results were found for your search.

Cannot display more than 1000 results, please narrow the terms of your search.