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Instruction in army telegraphy and telephony.

Archives, Room Use Only - UG590.G75 1917




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In the Senate of the United States: April 2, 1874, ordered to be printed: Mr. Ramsey submitted the following report: (to accompany bill S. 651).

Archives, Room Use Only - HE7781.R36 1874




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Western Union Telegraph Company, 1851-1901: a retrospect.

Archives, Room Use Only - HE7797.W53 W46 1901




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[Collection of International Correspondence Schools booklets on telegraphy and telephony].

Archives, Room Use Only - TK5262.C65 1925




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[Collection of railroad company telegrapher booklets].

Archives, Room Use Only - HD8039.T25 C65 1905




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Recent wonders in electricity, electric lighting, magnetism, telegraphy, telephony, etc., etc. / including articles by Dr. Siemens, F.R.S. Count du Moncel and Prof. Thomson [sic] ; edited by Henry Greer

Archives, Room Use Only - TK148.G74 1883




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Report from the Select Committee on Marconi's Wireless Telegraph Company, limited, agreement: together with the proceedings of the committee and appendices.

Archives, Room Use Only - HE8680.G7 G74 1913




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The William B. Duck Company: anything electrical, wirless instruments.

Archives, Room Use Only - TK455.W55 1915




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The Western Union Telegraph Company: rules.

Archives, Room Use Only - HE7797.W53 W47 1884




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Handbook of aerial construction / the Central District and Printing Telegraph Company

Archives, Room Use Only - TK5455.H36 1908




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Vizag gas leak: NGT notice to LG Polymers, others; directs company to deposit Rs 50 cr




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Fred Warner won't forget Joe Staley's 49ers influence any time soon

It could be called the "Joe Staley effect."




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Extraordinary winners of Sony World Photography Awards

From incredible landscapes to touching portraits to memorable wildlife photography, the winners of the Sony World Photography Awards showcase it all!Scroll down and prepared to be wowed...




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Showing their balcony spirit: Hope during COVID-19

From dancing to playing musical instruments to exercising... balconies across the world have become the hospot as people continue to quarantine and self-isolate themselves at homes to fight against the coronavirus pandemic.




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Many throng wedding venue of HDK's son despite appeal

Nikhil, son of former Chief Minister H D Kumaraswamy, tied the nuptial knot with Revathi, the grand-niece of former Karnataka housing minister M Krishnappa.The marriage was solemnised at Kumaraswamy's Kethaganahalli farmhouse at Bidadi in the neighbouring Ramanagara district, a JD-S stronghold.




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Breathtaking images from Sony World Photography Awards

Behold the breathtaking winning and shortlisted images from one of the world's most prestigious photography contests.The amazing shots are from the open competition of the Sony World Photography Awards 2020, which received 193,000 entries from photographers in over 200 territories.Scroll down and feast your eyes on our pick of the shortlisted and category-winning entries.




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Wreath-laying ceremony of Police Sub-Inspector held in Chhattisgarh




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Indian, Chinese troops clash near Naku La in Sikkim sector; many injured

The troops disengaged after dialogue at the local level




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No truth in statement of company, says CITU

‘Shift plant from habitations’




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Technical glitches, delay in issue of passes leave many stranded at border

Migrants complain officials are delaying their entry citing silly reasons and technical formalities




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Outbreaks in Germany, South Korea show the risks in easing up

Outbreaks in Germany, South Korea show the risks in easing up




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Post-reopening cases in South Korea, Germany spark 2nd wave fears - Times of India

Post-reopening cases in South Korea, Germany spark 2nd wave fears - Times of India




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Facing flak, 'missing' Gurdaspur MP Sunny Deol comes to town




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BJP MP Sunny Deol attends rally in Pathankot




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Free power to farmers won't be withdrawn at any cost: Punjab CM




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Will deal with anyone trying to destroy state's peace with iron hand: Punjab CM




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Wagah border ceremony suspended due to COVID-19




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Coronavirus: Public parade ceremony at Attari-Wagah border stopped, till further orders, from March 7




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Company gives 30,000 masks, sanitisers to Punjab Police




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Chandigarh Advisor gets too many requests for b'day cakes




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Music can endure any hardship: Harbhajan Mann




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HDFC Asset Management Company sees flat profit growth in march quarter

Fund house held sizeable market share in individual investors' segment





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Karnataka: Nine trade unions to oppose any amendment to labour laws, increase in working hours

Nine trade unions under the umbrella of Joint Committee of Trade Unions (JCTU) have said it would oppose any proposal to increase the working hours an




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Massive dust storm hits Delhi-NCR; accompanying rains bring relief from summer heat

The change in weather and the dust storm was witnessed in areas from Noida to Rajouri Garden in West Delhi.




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Lockdown or lawless tyranny?

We may be witnessing a slow erosion of the democratic republic and the emergence of the police State, warns Sunanda K Datta-Ray.




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Why flights are unlikely to resume any time soon

'Indian aviation cannot resume without at least three major airports being functional. If Delhi, Mumbai, Bengaluru, and Kolkata are shut, there is little chance that airlines will start flying even if the government gives the go-ahead.'




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Lockdown or lawless tyranny?

We may be witnessing a slow erosion of the democratic republic and the emergence of the police State, warns Sunanda K Datta-Ray.




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Molecular self-assembly of nylon-12 nanorods cylindrically confined to nanoporous alumina

It has been revealed that in cylindrical nano-confinement, the hydrogen-bonding direction of nylon-12 crystals in the rod could self-assemble to be parallel to the long axis of the rod. The dominant growth direction and hydrogen-bonding direction of the γ-form crystal in the long axis of the rod has been revealed by TEM–SAED and WAXD.






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Structure of the 4-hydroxy-tetrahydrodipicolinate synthase from the thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV and the phylogeny of the aminotransferase pathway

The enzyme 4-hydroxy-tetrahydrodipicolinate synthase (DapA) is involved in the production of lysine and precursor molecules for peptidoglycan synthesis. In a multistep reaction, DapA converts pyruvate and l-aspartate-4-semialdehyde to 4-hydroxy-2,3,4,5-tetrahydrodipicolinic acid. In many organisms, lysine binds allosterically to DapA, causing negative feedback, thus making the enzyme an important regulatory component of the pathway. Here, the 2.1 Å resolution crystal structure of DapA from the thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV is reported. The enzyme crystallized as a contaminant of a protein preparation from native biomass. Genome analysis reveals that M. fumariolicum SolV utilizes the recently discovered aminotransferase pathway for lysine biosynthesis. Phylogenetic analyses of the genes involved in this pathway shed new light on the distribution of this pathway across the three domains of life.




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Crystal structure of bis­(benzoato-κO)[5,15-diphenyl-10,20-bis­(pyridin-4-yl)porphyrinato-κ4N,N',N'',N''']tin(IV)

In the crystal structure of the title compound, [Sn(C42H26N6)(C7H5O2)2], the SnIV ion is located on a crystallographic inversion centre and is octa­hedrally coordinated with an N4O2 set. Four N atoms of the porphyrin ring form the equatorial plane while the axial positions are occupied by two O atoms from benzoate anions. The molecular packing of the title complex involves non-classical hydrogen bonds of the types C—H⋯O and C—H⋯N, leading to a three-dimensional network structure.




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(E)-4-Iodo-2-[(phenyl­imino)­meth­yl]phenol

The title compound, C13H10INO, is not planar as the dihedral angle between the planes of the two aryl rings is 44.5 (9)°. The configuration about the central C=N bond is E, and there is an intra­molecular O—H⋯N hydrogen bond which generates an S(6) ring. The mol­ecular packing is stabilized by weak C—H⋯π inter­actions. The structure was refined as a two-component inversion twin.




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Di­bromido­[N-(1-di­ethyl­amino-1-oxo-3-phenyl­propan-2-yl)-N'-(pyridin-2-yl)imidazol-2-yl­idene]palladium(II) di­chloro­methane monosolvate

In the mol­ecule of the title N,N'-disubstituted imidazol-2-yl­idene palladium(II) complex, [PdBr2(C21H24N4O)]·CH2Cl2, the palladium(II) atom adopts a slightly distorted square-planar coordination (r.m.s. deviation = 0.0145 Å), and the five-membered chelate ring is almost planar [maximum displacement = 0.015 (8) Å]. The mol­ecular conformation is enforced by intra­molecular C—H⋯Br hydrogen bonds. In the crystal, complex mol­ecules and di­chloro­methane mol­ecules are linked into a three-dimensional network by C—H⋯O and C—H⋯Br hydrogen bonds.




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N-Ethyl-N'-(3-methyl­benzo­yl)-S,S-di­phenyl­sulfo­diimide

The asymmetric unit of the title sulfodi­imide, C22H22N2OS, consists of two crystallographically independent mol­ecules with similar conformations The environment around each sulfur atom is a slightly distorted tetra­hedron with two S=N bonds and two S—C bonds. The S= N(m-methyl­benzo­yl) and S=N(NEt) bond lengths are 1.584 (3) and 1.528 (2) Å, respectively, for one mol­ecule, and 1.575 (2) and 1.529 (3) Å, respectively, for the other. The dihedral angles between the two phenyl rings in the mol­ecules are 86.76 (8) and 82.49 (8)°. The N—S—N—C(m-methyl­benzo­yl) and N—S—N—C(eth­yl) torsion angles are −60.5 (2) and −50.28 (19)°, respectively, for one mol­ecule, and 62.9 (2) and 44.2 (3)°, respectively, for the other. In the crystal, each independent mol­ecule is linked to its inversion-related mol­ecule via a pair of C—H⋯O hydrogen bonds, forming a dimer.




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7-(Biphenyl-4-yl)-6-hy­droxy­indan-1-one

The title compound, C21H16O2, was isolated from the reaction of 1-(2-meth­oxy­eth­oxy)-1-vinyl­cyclo­propane, 4-ethynylbiphenyl, and CO in a [5 + 1 + 2 + 1] cyclo­addition reaction catalysed by [Rh(CO)2Cl]2. The crystals precipitated directly from the crude reaction mixture. A hydrogen-bonding framework between the hy­droxy and carbonyl groups of a symmetry-related neighbour connects the mol­ecules into chains running parallel to the crystallographic c axis. A minor non-merohedral twin component was included in the refinement.




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Ethyl 4-(4-chloro-3-fluoro­phen­yl)-6-methyl-2-sulfanyl­idene-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate

In the title compound, C14H14ClFN2O2S, the di­hydro­pyrimidine ring adopts a shallow-boat conformation and subtends a dihedral angle of 81.91 (17)° with the phenyl ring. In the crystal, N—H⋯O, N—H⋯S and C—H⋯F hydrogen bonds and C—H⋯π inter­actions are found.




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(2,2-Bi­pyridine-κ2N,N')chlorido­[η6-1-methyl-4-(propan-2-yl)benzene]­ruthenium(II) tetra­phenyl­borate

The title complex, [RuCl(C10H14)(C10H8N2)](C24H20B), has monoclinic (P21) symmetry at 100 K. It was prepared by the reaction of the di­chlor­ido[1-methyl-4-(propan-2-yl)benzene]­ruthenium(II) dimer with 2,2'-bi­pyridine, followed by the addition of ammonium tetra­phenyl­borate. The 1-methyl-4-(propan-2-yl)benzene group, the 2,2'-bi­pyridine unit and a chloride ion coordinate the ruthenium(II) atom, with the 1-methyl-4-(propan-2-yl)benzene ring and bi­pyridine moieties trans to each other. In the crystal, the complex cations are linked by C—H⋯Cl hydrogen bonds, forming chains parallel to [010]. These chains are linked by a number of C—H⋯π inter­actions, involving the phenyl rings of the tetra­phenyl­borate anion and a pyridine ring of the bpy ligand, resulting in the formation of layers parallel to (10overline{1}).




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(1Z,2Z)-1,2-Bis{2-[3,5-bis­(tri­fluoro­meth­yl)phen­yl]hydrazinyl­idene}-1,2-bis­(4-meth­oxy­phen­yl)ethane including an unknown solvate

The complete mol­ecule of the title compound, C32H22F12N4O2, is generated by a crystallographic twofold axis aligned parallel to [010]. The F atoms of one of the CF3 groups are disordered over three orientations in a 0.6: 0.2: 0.2 ratio. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, forming zigzag chains propagating along the a-axis direction. In addition, weak C—H⋯O and C—H⋯F bonds are observed. The contribution of the disordered solvent to the scattering was removed using the SQUEEZE routine [Spek (2015). Acta Cryst. C71, 9–18] of PLATON. The solvent contribution is not included in the reported mol­ecular weight and density.