pera Automobile Component Manufacturers In Green Zone To Restart Operations Soon: Awaiting Approval By www.drivespark.com Published On :: Sat, 09 May 2020 13:24:56 +0530 The Indian auto industry is slowly working its way to restart operations in India, after being shut down for over 40 days. Automobile companies are currently preparing to resume production in accordance with the government's guidelines for ensuring all safety and social distancing norms are followed. Full Article
pera JK Tyre Resumes Operations Under Rules Set By The Government By www.drivespark.com Published On :: Sat, 09 May 2020 14:03:25 +0530 Due to the COVID-19 pandemic, India is currently facing a nationwide lockdown and because of that, businesses across the nation have been affected badly. To resume business, the Government has come up with some guidelines which the companies have to follow strictly. Full Article
pera Hero MotoCorp Restarts Operations Amidst Lockdown Relaxations: To Commence Production Phase-Wise By www.drivespark.com Published On :: Mon, 04 May 2020 17:14:15 +0530 Hero MotoCorp, the world's largest two-wheeler manufacturer has announced it will soon be restarting operations in India. The decision to commence production comes as part of the relaxations put in place on the lockdown regulations by the central government. Full Article
pera Royal Enfield To Restart Its Operations As Per Rules Set By The Government By www.drivespark.com Published On :: Thu, 07 May 2020 12:51:05 +0530 Due to the COVID-19 pandemic, many businesses across the globe have been suspended or shut down. Due to the crisis, India is currently facing a nationwide lockdown till May 17. The automobile industry is going through a rough phase as plants Full Article
pera Honda Two-Wheeler Dealerships Across India To Restart Operations: Safety Protocols In Place By www.drivespark.com Published On :: Thu, 07 May 2020 16:03:36 +0530 Honda Motorcycles & Scooters India (HMSI) has announced that with the relaxation in lockdown regulations by the government, the company will be restarting dealer operations across India. The reopening of Honda dealerships across the country will begin in a phase-wise manner. Full Article
pera Major U.S. airlines endorse temperature checks for passengers By feeds.reuters.com Published On :: Sun, 10 May 2020 08:52:00 +0530 A major U.S. airline trade group on Saturday said it backed the U.S. Transportation Security Administration (TSA) checking the temperatures of passengers and customer-facing employees during the coronavirus pandemic. Full Article businessNews
pera Lecture on galvanic batteries and electrical machines, as used in torpedo operations: arranged in three parts / John P. Merrell By library.mit.edu Published On :: Sun, 12 Jan 2014 06:33:00 EST Archives, Room Use Only - QC573.M47 1874 Full Article
pera Description of the American electro magnetic telegraph: now in operation between the cities of Washington and Baltimore: illustrated by fourteen wood engravings / by Alfred Vail By library.mit.edu Published On :: Sun, 12 Jan 2014 06:33:00 EST Archives, Room Use Only - TK5123.V35 1845 Full Article
pera L'opera di Alessandro Volta: scelta di scritti originali / raccolti ed illustrati dal prof. Francesco Massardi ; pubblicati a cura della Associazione elettrotecnica italiana nel 1°. centenario della morte By library.mit.edu Published On :: Sun, 12 Jan 2014 06:33:00 EST Archives, Room Use Only - QC517.V92 1927 Full Article
pera Modern practice of the electric telegraph: a handbook for electricians and operators / by Frank L. Pope By library.mit.edu Published On :: Sun, 2 Feb 2014 06:35:43 EST Archives, Room Use Only - TK5263.P67 1881 Full Article
pera American telegraphy: systems, apparatus, operation / by William Maver, Jr By library.mit.edu Published On :: Sun, 9 Feb 2014 06:34:19 EST Archives, Room Use Only - TK5261.M58 1899 Full Article
pera The radio-telegraphist's guide and log-book: a manual of wireless telegraphy for the use of operators / by W.H. Marchant By library.mit.edu Published On :: Sun, 9 Feb 2014 06:34:19 EST Archives, Room Use Only - TK5743.M37 1912 Full Article
pera Wireless explained: the book for officers of the mercantile marine / by Frederick Cross, Lieut. R.N.R., headmaster and operator on the training ship "Mersey" By library.mit.edu Published On :: Sun, 9 Feb 2014 06:34:19 EST Archives, Room Use Only - VM480.5.G7 C76 1918 Full Article
pera Telephone construction, installation, wiring, operation and maintenance: a treatise describing and illustrating up-to-date methods of telephone practice, including the principles of construction and operation of telephone instruments ... / by W.H. Radclif By library.mit.edu Published On :: Sun, 9 Feb 2014 06:34:19 EST Archives, Room Use Only - TK6162.R33 1917 Full Article
pera Operation of trains and station work and telegraphy / compiled and edited by Frederick J. Prior By library.mit.edu Published On :: Sun, 9 Feb 2014 06:34:19 EST Archives, Room Use Only - TF550.P75 1919 Full Article
pera Sam Johnson: the experience and observations of a railroad telegraph operator / by Samson By library.mit.edu Published On :: Sun, 16 Feb 2014 06:33:42 EST Archives, Room Use Only - TK5265.C55 1878 Full Article
pera A handbook of the electric telegraph: designed for the use of students and operators / by I.W. Mattison By library.mit.edu Published On :: Sun, 23 Feb 2014 06:47:06 EST Archives, Room Use Only - TK5263.M38 1873 Full Article
pera Modern practice of the electric telegraph: a handbook for electricians and operators / by Frank L. Pope By library.mit.edu Published On :: Sun, 23 Feb 2014 06:47:06 EST Archives, Room Use Only - TK5263.P67 1873 Full Article
pera A testing laboratory in practical operation / by Clayton H. Sharp, Ph.D By library.mit.edu Published On :: Sun, 23 Mar 2014 06:15:10 EDT Archives, Room Use Only - TK411.S53 1905 Full Article
pera Description of the American electro magnetic telegraph: now in operation between the cities of Washington and Baltimore: illustrated by fourteen wood engravings / by Alfred Vail By library.mit.edu Published On :: Sun, 23 Mar 2014 06:15:10 EDT Archives, Room Use Only - TK5123.V35 1847 Full Article
pera The A.B.C. of wireless telegraphy: a plain treatise on Hertzian wave signaling, embracing theory, methods of operation, and how to build various pieces of the apparatus employed / by Edward Trevert [pseud.] By library.mit.edu Published On :: Sun, 18 May 2014 06:17:36 EDT Archives, Room Use Only - TK5741.T74 1902 Full Article
pera Telegraphy and telephony with railroad applications / by Charles Stanley Rhoads ; a description of the fundamentals of telegraphy and telephony and of the organization, outside and inside plant, apparatus, circuits and methods of operation, engineering a By library.mit.edu Published On :: Sun, 27 Jul 2014 07:06:48 EDT Archives, Room Use Only - TK5262.R46 1924 Full Article
pera Handbook for wireless telegraph operators working installations licensed by His Majesty's Postmaster-General: revised in accordance with the Radiotelegraph Convention of London, 1912. By library.mit.edu Published On :: Sun, 31 Aug 2014 08:18:07 EDT Archives, Room Use Only - TK5743.G74 1915 Full Article
pera K'taka govt awaits consent of 6 states to operate trains for stranded people By www.newkerala.com Published On :: Sat, 09 May 2020 12:38:01 +0530 Full Article
pera 3,500 fly back in 3 days, PMO monitors Vande Bharat operations By timesofindia.indiatimes.com Published On :: Sun, 10 May 2020 04:05:37 IST Around 3,500 Indians stranded abroad had been flown into India until the wee hours on Sunday as India’s Vande Bharat Mission motored ahead under what official sources described as regular high-level oversight. While eight flights landed across India on Saturday — Day 3 — an equal number was expected on Sunday. Around 2K will be arriving from the Maldives. Full Article
pera PHOTOS: IAF's Chinook begins operations in Siachen By www.rediff.com Published On :: Fri, 21 Feb 2020 10:57:56 +0530 The chopper was inducted into service in March last year. Full Article Indian Air Force PHOTOS HADR ANI Ladakh China Siachen Pakistan
pera Andhra govt reduces liquor shops operating in state by further 13pc By www.newkerala.com Published On :: Sun, 10 May 2020 04:03:01 +0530 Full Article
pera Gas leak fallout: CPCB asks industrial units across India to go for safety and hazard audit before resuming operations By Published On :: Gas leak fallout: CPCB asks industrial units across India to go for safety and hazard audit before resuming operations Full Article
pera Around 75% pharma units operational in Gujarat: FDCA By Published On :: Around 75% pharma units operational in Gujarat: FDCA Full Article
pera Vande Bharat operations: 3,500 fly back in 3 days By Published On :: Vande Bharat operations: 3,500 fly back in 3 days Full Article
pera Punjab Cabinet approves rules for facilitating Co-operative Societies By www.newkerala.com Published On :: Tue, 03 Mar 2020 08:44:01 +0530 Full Article
pera Will cooperate with steps taken by PM, CM in this hour of shared challenge: SAD By www.newkerala.com Published On :: Mon, 23 Mar 2020 11:09:02 +0530 Full Article
pera Punjab CM asks industrial units, brick kilns to commence operations with migrant workers By www.newkerala.com Published On :: Mon, 30 Mar 2020 10:02:02 +0530 Full Article
pera COVID-19: Operations of food preparation establishments stopped in Ludhiana By www.newkerala.com Published On :: Fri, 17 Apr 2020 02:18:01 +0530 Full Article
pera Military doctors in Punjab perform lifesaving operation By www.newkerala.com Published On :: Sat, 25 Apr 2020 17:47:02 +0530 Full Article
pera Chandigarh Police's trapper for uncooperative corona patients By www.newkerala.com Published On :: Sun, 26 Apr 2020 16:05:01 +0530 Full Article
pera Allow small industry to operate from non-containment zones: Punjab CM By www.newkerala.com Published On :: Tue, 05 May 2020 08:21:01 +0530 Full Article
pera COVID-19: Punjab issues advisory for safe operation of govt offices By www.newkerala.com Published On :: Wed, 06 May 2020 06:58:01 +0530 Full Article
pera Cochin Port Trust helps during ‘Operation Samudra Sethu’ for Maldives expatriates By www.thehindubusinessline.com Published On :: Sun, 10 May 2020 11:55:50 +0530 This is the Indian Navy’s first massive evacuation exercise during the Covid-19 lockdown Full Article National
pera Mumbai: Several trapped after building collapses in Kandivali West; rescue operation underway By www.dnaindia.com Published On :: Sun, 10 May 2020 03:16:00 GMT Further details are awaited. Full Article India
pera TV Rewind | Desperate Housewives: Gossip Girl for grown-ups By indianexpress.com Published On :: Sat, 09 May 2020 20:38:07 +0000 Full Article Entertainment Television
pera AP-XPS beamline, a platform for operando science at Pohang Accelerator Laboratory By scripts.iucr.org Published On :: 2020-01-28 Beamline 8A (BL 8A) is an undulator-based soft X-ray beamline at Pohang Accelerator Laboratory. This beamline is aimed at high-resolution ambient-pressure X-ray photoelectron spectroscopy (AP-XPS), soft X-ray absorption spectroscopy (soft-XAS) and scanning photoemission microscopy (SPEM) experiments. BL 8A has two branches, 8A1 SPEM and 8A2 AP-XPS, that share a plane undulator, the first mirror (M1) and the monochromator. The photon beam is switched between the two branches by changing the refocusing mirrors after the monochromator. The acceptance angle of M1 is kept glancing at 1.2°, and Pt is coated onto the mirrors to achieve high reflectance, which ensures a wide photon energy range (100–2000 eV) with high resolution at a photon flux of ∼1013 photons s−1. In this article, the main properties and performance of the beamline are reported, together with selected experiments performed on the new beamline and experimental system. Full Article text
pera A lathe system for micrometre-sized cylindrical sample preparation at room and cryogenic temperatures By scripts.iucr.org Published On :: 2020-01-29 A simple two-spindle based lathe system for the preparation of cylindrical samples intended for X-ray tomography is presented. The setup can operate at room temperature as well as under cryogenic conditions, allowing the preparation of samples down to 20 and 50 µm in diameter, respectively, within minutes. Case studies are presented involving the preparation of a brittle biomineral brachiopod shell and cryogenically fixed soft brain tissue, and their examination by means of ptychographic X-ray computed tomography reveals the preparation method to be mainly free from causing artefacts. Since this lathe system easily yields near-cylindrical samples ideal for tomography, a usage for a wide variety of otherwise challenging specimens is anticipated, in addition to potential use as a time- and cost-saving tool prior to focused ion-beam milling. Fast sample preparation becomes especially important in relation to shorter measurement times expected in next-generation synchrotron sources. Full Article text
pera 1,4-Bis(2-nitrobenzyl)piperazine By scripts.iucr.org Published On :: 2019-11-05 The title compound, C18H20N4O4, was synthesized via the base-assisted reaction of piperazine and 2-nitrobenyl bromide in toluene: the complete molecule is generated by a crystallographic inversion centre in the solid state. Full Article text
pera Syntheses and structures of piperazin-1-ium ABr2 (A = Cs or Rb): hybrid solids containing `curtain wall' layers of face- and edge-sharing ABr6 trigonal prisms By scripts.iucr.org Published On :: 2019-07-26 The isostructural title compounds, poly[piperazin-1-ium [di-μ-bromido-caesium]], {(C4H11N2)[CsBr2]}n, and poly[piperazin-1-ium [di-μ-bromido-rubidium]], {(C4H11N2)[RbBr2]}n, contain singly-protonated piperazin-1-ium cations and unusual ABr6 (A = Cs or Rb) trigonal prisms. The prisms are linked into a distinctive `curtain wall' arrangement propagating in the (010) plane by face and edge sharing. In each case, a network of N—H⋯N, N—H⋯Br and N—H⋯(Br,Br) hydrogen bonds consolidates the structure. Full Article text
pera Six 1-aroyl-4-(4-methoxyphenyl)piperazines: similar molecular structures but different patterns of supramolecular assembly By scripts.iucr.org Published On :: 2019-07-26 Six new 1-aroyl-4-(4-methoxyphenyl)piperazines have been prepared, using coupling reactions between benzoic acids and N-(4-methoxyphenyl)piperazine. There are no significant hydrogen bonds in the structure of 1-benzoyl-4-(4-methoxyphenyl)piperazine, C18H20N2O2, (I). The molecules of 1-(2-fluorobenzoyl)-4-(4-methoxyphenyl)piperazine, C18H19FN2O2, (II), are linked by two C—H⋯O hydrogen bonds to form chains of rings, which are linked into sheets by an aromatic π–π stacking interaction. 1-(2-Chlorobenzoyl)-4-(4-methoxyphenyl)piperazine, C18H19ClN2O2, (III), 1-(2-bromobenzoyl)-4-(4-methoxyphenyl)piperazine, C18H19BrN2O2, (IV), and 1-(2-iodobenzoyl)-4-(4-methoxyphenyl)piperazine, C18H19IN2O2, (V), are isomorphous, but in (III) the aroyl ring is disordered over two sets of atomic sites having occupancies of 0.942 (2) and 0.058 (2). In each of (III)–(V), a combination of two C—H⋯π(arene) hydrogen bonds links the molecules into sheets. A single O—H⋯O hydrogen bond links the molecules of 1-(2-hydroxybenzoyl)-4-(4-methoxyphenyl)piperazine, C18H20N2O3, (VI), into simple chains. Comparisons are made with the structures of some related compounds. Full Article text
pera Twelve 4-(4-methoxyphenyl)piperazin-1-ium salts containing organic anions: supramolecular assembly in one, two and three dimensions By scripts.iucr.org Published On :: 2019-09-20 Twelve 4-(4-methoxyphenyl)piperazin-1-ium salts containing organic anions have been prepared and structurally characterized. The monohydrated benzoate, 4-fluorobenzoate, 4-chlorobenzoate and 4-bromobenzoate salts, C11H17N2O+·C7H5O2−·H2O (I), C11H17N2O+·C7H4FO2−·H2O (II), C11H17N2O+·C7H4ClO2−·H2O (III), and C11H17N2O+·C7H4BrO2−·H2O (IV), respectively, are isomorphous and all exhibit disorder in the 4-methoxyphenyl unit: the components are linked by N—H⋯O and O—H⋯O hydrogen bond to form chains of rings. The unsolvated 2-hydroxybenzoate, pyridine-3-carboxylate and 2-hydroxy-3,5-dinitrobenzoate salts, C11H17N2O+·C7H5O3− (V), C11H17N2O+·C6H4NO2− (VI) and C11H17N2O+·C7H3N2O7− (VII), respectively, are all fully ordered: the components of (V) are linked by multiple N—H⋯O hydrogen bonds to form a chain of rings; those of (VI) are linked into a three-dimensional framework by a combination of N—H⋯O, C—H⋯O and C—H⋯N hydrogen bonds and those of (VII), where the anion has a structure reminiscent of the picrate anion, are linked into a three-dimensional array by N—H⋯O and C—H⋯O hydrogen bonds. The hydrogensuccinate and hydrogenfumarate salts, C11H17N2O+·C4H5O4− (VIII) and C11H17N2O+·C4H3O3− (IX), respectively, are isomorphous, and both exhibit disorder in the anionic component: N—H⋯O and O—H⋯O hydrogen bonds link the ions into sheets, which are further linked by C—H⋯π(arene) interactions. The anion of the hydrogenmaleate salt, C11H17N2O+·C4H3O3− (X), contains a very short and nearly symmetrical O⋯H⋯O hydrogen bond, and N—H⋯O hydrogen bonds link the anions into chains of rings. The ions in the trichloroacetate salt, C11H17N2O+·C2Cl3O2− (XI), are linked into simple chains by N—H⋯O hydrogen bonds. In the hydrated chloranilate salt, 2C11H17N2O+·C6Cl2O42−·2H2O (XII), which crystallizes as a non-merohedral twin, the anion lies across a centre of inversion in space group P21/n, and a combination of N—H⋯O and O—H⋯O hydrogen bonds generates complex sheets. Comparisons are made with the structures of some related compounds. Full Article text
pera Crystal structures of the recreational drug N-(4-methoxyphenyl)piperazine (MeOPP) and three of its salts By scripts.iucr.org Published On :: 2020-03-05 Crystal structures are reported for N-(4-methoxyphenyl)piperazine (MeOPP), (I), and for its 3,5-dinitrobenzoate, 2,4,6-trinitrophenolate (picrate) and 4-aminobenzoate salts, (II)–(IV), the last of which crystallizes as a monohydrate. In MeOPP, C11H16N2O, (I), the 4-methoxyphenyl group is nearly planar and it occupies an equatorial site on the piperazine ring: the molecules are linked into simple C(10) chains by N—H⋯O hydrogen bonds. In each of the salts, i.e., C11H17N2O+·C7H3N2O6−, (II), C11H17N2O+·C6H2N3O7−, (III), and C11H17N2O+·C7H6NO2−·H2O, (IV), the effectively planar 4-methoxyphenyl substituent again occupies an equatorial site on the piperazine ring. In (II), two of the nitro groups are disordered over two sets of atomic sites and the bond distances in the anion indicate considerable delocalization of the negative charge over the C atoms of the ring. The ions in (II) are linked by two N—H⋯O hydrogen bonds to form a cyclic, centrosymmetric four-ion aggregate; those in (III) are linked by a combination of N—H⋯O and C—H⋯π(arene) hydrogen bonds to form sheets; and the components of (IV) are linked by N—H⋯O, O—H⋯O and C—H⋯π(arene) hydrogen bonds to form a three-dimensional framework structure. Comparisons are made with the structures of some related compounds. Full Article text
pera Optimization of crystallization of biological macromolecules using dialysis combined with temperature control By scripts.iucr.org Published On :: 2020-05-05 A rational way to find the appropriate conditions to grow crystal samples for bio-crystallography is to determine the crystallization phase diagram, which allows precise control of the parameters affecting the crystal growth process. First, the nucleation is induced at supersaturated conditions close to the solubility boundary between the nucleation and metastable regions. Then, crystal growth is further achieved in the metastable zone – which is the optimal location for slow and ordered crystal expansion – by modulation of specific physical parameters. Recently, a prototype of an integrated apparatus for the rational optimization of crystal growth by mapping and manipulating temperature–precipitant–concentration phase diagrams has been constructed. Here, it is demonstrated that a thorough knowledge of the phase diagram is vital in any crystallization experiment. The relevance of the selection of the starting position and the kinetic pathway undertaken in controlling most of the final properties of the synthesized crystals is shown. The rational crystallization optimization strategies developed and presented here allow tailoring of crystal size and diffraction quality, significantly reducing the time, effort and amount of expensive protein material required for structure determination. Full Article text
pera A thermal-gradient approach to variable-temperature measurements resolved in space By scripts.iucr.org Published On :: 2020-04-23 Temperature is a ubiquitous environmental variable used to explore materials structure, properties and reactivity. This article reports a new paradigm for variable-temperature measurements that varies the temperature continuously across a sample such that temperature is measured as a function of sample position and not time. The gradient approach offers advantages over conventional variable-temperature studies, in which temperature is scanned during a series measurement, in that it improves the efficiency with which a series of temperatures can be probed and it allows the sample evolution at multiple temperatures to be measured in parallel to resolve kinetic and thermodynamic effects. Applied to treat samples at a continuum of temperatures prior to measurements at ambient temperature, the gradient approach enables parametric studies of recovered systems, eliminating temperature-dependent structural and chemical variations to simplify interpretation of the data. The implementation of spatially resolved variable-temperature measurements presented here is based on a gradient-heater design that uses a 3D-printed ceramic template to guide the variable pitch of the wire in a resistively heated wire-wound heater element. The configuration of the gradient heater was refined on the basis of thermal modelling. Applications of the gradient heater to quantify thermal-expansion behaviour, to map metastable polymorphs recovered to ambient temperature, and to monitor the time- and temperature-dependent phase evolution in a complex solid-state reaction are demonstrated. Full Article text