4-CH

AcronymDefinition
4-CHFour-Channel (electronics)
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- Features 4-CH PoE (IEEE802.3at compliance), six USB 3.1 ports and two Gigabit LANs for connectivity
(S)-tert-Butyl-3-(acryloyloxy)pyrrolidine-1-carboxylate (12, Method A) was isolated as a pale yellow oil (43.6%); [sup.1]H NMR [delta] 6.30 (d, [delta] = 5.8Hz, [sup.1]H, vinylic CH); 5.99 (dd, [delta] = 3.5, 5.8Hz, [sup.1]H, vinylic CH); 5.73 (d, [delta] = 3.5 Hz, [sup.1]H, vinylic CH); 5.23 (br m, [sup.1]H, ring diastereotopic 4-CH); 3.47 (m, 2H, N-C[H.sub.2]); 3.33 (m, 2H, N-C[H.sub.2]); 1.95 (m, 2H, ring 4-C[H.sub.2]); 1.34 (s, 9H, t-BOC C[H.sub.3]); [sup.13]C NMR [delta] 28.6, 30.9, 31.7, 43.7, 44.12, 51.5, 51.9, 73.3, 74.1, 79.7, 128.4, 131.4, 154.5, and 165.8; IR (film) 3061, 2979, 2885, 1727, 1620, 1479, 1412, 1366, 1297, 1270, 1192, 1117, and 1096 [cm.sup.?1]; EIMS (70 eV): 168 [[M-t-BuO].sup.+], 113 [[[C.sub.5][H.sub.7]N[O.sub.2]].sup.+], and 57 [[t-Bu].sup.+].
[[delta].sub.C] ([C.sub.5][D.sub.5]N) 14.74 (H-C[H.sub.3]), 17.02 (12-C[H.sub.3]), 19.02 (22-C[H.sub.3]), 20.32 (23-C[H.sub.3]), 22.50 (25-C[H.sub.3]), 38.39 (15-C[H.sub.2]), 41.95 (16-CH), 45.22 (10-CH), 50.01 (3-CH), 50.95 (4-CH), 52.75 (8-CH), 54.04 (19-CH), 60.64 (9-C), 61.39 (20-CH), 69.01 (7-CH), 73.30 (21-CH), 77.09 (18-C), 126.58 (5-C), 126.61 (29-C), 126.84 (14-CH), 127.21 (13-Ch), 128.79 (28,30-CH), 129.53 (27, 31-CH),133.10 (6-C), 138.72 (26-C), 170.80 (24-C=O), 175.29 (1-C=O) and 216.14 (17-C=O).
[[delta].sub.C] ([C.sub.5][D.sub.5]N) 13.32 (22-C[H.sub.3]), 18.93 (23C[H.sub.3]), 20.33 (H-C[H.sub.3]), 22.68 (25-C[H.sub.3]), 32.89 (5-CH), 39.01 (15-C[H.sub.2]), 42.41 (16-CH), 45.40 (3-CH), 47.30 (10-C[H.sub.2]), 50.52 (4-CH), 53.63 (9-C), 53.92 (19-CH), 54.34 (20-CH), 60.66 (8-CH), 71.34 (7-CH), 75.07 (21-CH), 77.27 (18-C), 112.00 (12 C[H.sub.2]), 126.75 (29-Ar-CH), 128.74 (28, 30-Ar-CH), 129.95 (27, 31-Ar-CH), 132.01 (13-CH), 132.05 (14-CH), 138.34 (26-C), 149.89 (6-C), 170.59 (24-C=O), 175.01 (1C=O) and 216.34 (17-C=O).
The rich panel I/O ports comprise of 2 x Gigabit Ethernet ports by Intel l120 GbE controller, 1 x DVI-I connector for both analog RGB and DVI or HDMI outputs, 2 x RS-232/422/485 (COM1 & COM3), 2 x RS-232 (COM2 & COM4), 3 x USB 3.0 ports, 1 x USB 2.0 port, and standard 8-CH 5V TTL GPIO with optional 4-CH isolated DI + 4-CH isolated DO.
● Extended temperature, fanless operation design with 4-CH Gb PoE ports
Tenders are invited for Supply Of 4-Port Rs-232/422/485 Serial Device Server, 4-Port Rs-232/422/485 Universal Pci Serial Board, 1 Ms/S, 12-Bit, 16-Ch Pci Multifunction Daq Card, 10 Mhz, 12-Bit, 4-Ch Analog Output Pci Card With 16-Ch Digital I/O
Effective from today till the end of 2014, special prices will be offered to the purchase of VIVOTEK 4-CH video server VS8401 or 8-CH video server VS8801 with adopting Milestone XProtect video management software (VMS).
Contract notice: Development of 4-ch draft forest management plans and the preparation of 2-ch phytosociological studies of organizational units rdsfs.
Packages from 3 to 15 consist of 4-ch part, divided into individual sections of forest management:
Contract award: provision of hardware at the winter and ongoing maintenance of national roads administrowanychprzez branch in rzeszEw, the general directorate for national roads and motorways in the 4-ch winter seasons, ie 2013/2014, 2014/2015, 2015/2016 and 2016/2017.
Winter maintenance of roads in the district of Brest District 4-ch consecutive winter seasons: 2013/2014, 2014/2015, 2015/2016, 2016/2017, in accordance with the accepted standard by combating slippery winter on designated roads and road clearing snow on district roads