pac The all red line: the annals and aims of the Pacific cable project / edited by George Johnson By library.mit.edu Published On :: Sun, 9 Feb 2014 06:34:19 EST Archives, Room Use Only - TK5613.J64 1903 Full Article
pac Canada-Australia: further correspondence relating to the proposed construction of a cable across the Pacific Ocean: (in continuation of C. 9283 May, 1899). By library.mit.edu Published On :: Sun, 9 Mar 2014 06:50:15 EDT Archives, Room Use Only - TK5613.C36 1900 Full Article
pac An act to aid in the construction of a railroad & telegraph line from the Missouri River to the Pacific Ocean: approved July 1, 1862. By library.mit.edu Published On :: Sun, 23 Mar 2014 06:15:10 EDT Archives, Room Use Only - HE2763.U55 1867 Full Article
pac Travel and adventure in the territory of Alaska, formerly Russian America--now ceded to the United States--and in various other parts of the north Pacific / by Frederick Whymper By library.mit.edu Published On :: Sun, 22 Jun 2014 06:19:54 EDT Archives, Room Use Only - F908.W59 1869 Full Article
pac Report, minutes of proceedings, &c. / Pacific Cable Committee By library.mit.edu Published On :: Sun, 31 Aug 2014 08:18:07 EDT Archives, Room Use Only - TK5613.P33 1899 Full Article
pac Pacific railroad acts. Act of 1862.: an act to aid in the construction of a railroad and telegraph line from the Missouri River to the Pacific Ocean, and to secure to the government the use of the same for postal, military, and other purposes, approved Ju By library.mit.edu Published On :: Sun, 28 Sep 2014 08:10:12 EDT Archives, Room Use Only - HE2763.P33 1868 Full Article
pac From steam to glass: the curious story of Brazilian telecommunication / John Packer By library.mit.edu Published On :: Sun, 28 Sep 2014 08:10:12 EDT Archives, Room Use Only - HE7994.P33 1996 Full Article
pac Megan Schutt ready for women's cricket to feel impact of coronavirus By www.newkerala.com Published On :: Sun, 10 May 2020 06:18:02 +0530 Full Article
pac Karnataka govt should demand economic package of Rs 50,000 crore from centre: Siddaramaiah By www.newkerala.com Published On :: Sat, 09 May 2020 09:46:01 +0530 Full Article
pac Karnataka announces special relief package for cobblers and leather workers By www.newkerala.com Published On :: Sat, 09 May 2020 12:24:02 +0530 Full Article
pac Empty spaces amid coronavirus By www.rediff.com Published On :: Fri, 13 Mar 2020 08:41:18 +0530 Cinemas, stadiums, town squares and other public gathering places are devoid of people as the coronavirus spreads to at least 118 countries around the world.As of Thursday, the Johns Hopkins University tracker says 1,26,258 people have contracted the disease and 4,638 have died across the globe. The vast majority of the victims have been in China but the country said on Thursday that it had only 15 new cases.The outbreak also claimed its most high-profile victim so far when Hollywood star Tom Hanks announced he and his wife, Rita Wilson, had tested positive. The couple, who are in Australia where Hanks is making a film about Elvis, said they had felt "a bit tired, like we had colds" before being "found to be positive"Take a look. Full Article
pac COVID-19 crisis: Chhattisgarh CM writes to PM, asks for Rs 30,000 crore package for state By www.newkerala.com Published On :: Sun, 10 May 2020 06:33:01 +0530 Full Article
pac Immediate stimulus package of Rs 15 lakh crore needed to overcome Covid-19 impact: CII By www.newkerala.com Published On :: Sun, 10 May 2020 05:33:01 +0530 Full Article
pac Chennai's Koyambedu market continues to impact TN Corona count By www.newkerala.com Published On :: Sat, 09 May 2020 07:46:01 +0530 Full Article
pac Tamil Nadu govt forms high-level committee, headed by former RBI Guv, to assess impact of COVID-19 By www.newkerala.com Published On :: Sun, 10 May 2020 03:27:02 +0530 Full Article
pac Covid-19 testing capacity scaled up to 95,000 per day: Harsh Vardhan By www.business-standard.com Published On :: Sat, 09 May 2020 20:14:00 +0530 Vardhan also flagged the large prevalence of non-smoking tobacco usage in some of the states and the problem of spitting in public places. Full Article
pac Now, a panel to assess impact of pandemic on economy By www.thehindu.com Published On :: Sun, 10 May 2020 02:30:13 +0530 C. Rangarajan, former RBI governor, to head committee Full Article Tamil Nadu
pac Punjab to renegotiate power purchase pacts By www.newkerala.com Published On :: Tue, 18 Feb 2020 07:41:01 +0530 Full Article
pac Punjab seeks package to combat COVID-19 crisis By www.newkerala.com Published On :: Sat, 21 Mar 2020 07:58:02 +0530 Full Article
pac Punjab CM asks PM Modi for fiscal package, permission to get COVID-19 test done at pvt labs By www.newkerala.com Published On :: Sun, 22 Mar 2020 09:54:02 +0530 Full Article
pac Punjab CM seeks economic package to tackle COVID-19 By www.newkerala.com Published On :: Mon, 23 Mar 2020 12:09:01 +0530 Full Article
pac 'Centre's steps to counter coronavirus impacts inadequate' By www.newkerala.com Published On :: Wed, 25 Mar 2020 08:09:01 +0530 Full Article
pac Punjab CM sanctions Rs 3 cr for providing food packets during lockdown By www.newkerala.com Published On :: Wed, 25 Mar 2020 15:35:01 +0530 Full Article
pac Punjab to provide 10 lakh ration packets to daily wagers By www.newkerala.com Published On :: Fri, 27 Mar 2020 09:18:02 +0530 Full Article
pac Punjab CM announces door-to-door distribution of 10 lakh packets of dry rations to daily wagers By www.newkerala.com Published On :: Fri, 27 Mar 2020 15:50:02 +0530 Full Article
pac Punjab Police distribute 1.9 lakh food packets By www.newkerala.com Published On :: Sat, 28 Mar 2020 07:27:01 +0530 Full Article
pac Punjab Police distribute nearly 1.9 lakh food packets across state By www.newkerala.com Published On :: Sat, 28 Mar 2020 14:12:02 +0530 Full Article
pac Combating COVID-19: Punjab doubles testing capacity By www.newkerala.com Published On :: Sun, 29 Mar 2020 11:32:02 +0530 Full Article
pac Punjab, OLA in pact to issue e-passes to 17 lakh farmers By www.newkerala.com Published On :: Thu, 16 Apr 2020 08:35:01 +0530 Full Article
pac IAF's Apache helicopter makes precautionary landing in Punjab's Hoshiarpur By www.newkerala.com Published On :: Sat, 18 Apr 2020 07:51:02 +0530 Full Article
pac Punjab seeks bailout package for COVID-19 crisis By www.newkerala.com Published On :: Wed, 22 Apr 2020 08:52:01 +0530 Full Article
pac COVID-19: Punjab CM requests PM for 3-month special financial package By www.newkerala.com Published On :: Wed, 22 Apr 2020 09:56:01 +0530 Full Article
pac Punjab CM seeks package for state power sector By www.newkerala.com Published On :: Thu, 23 Apr 2020 09:46:02 +0530 Full Article
pac Punjab CM asks states to seek bailout package By www.newkerala.com Published On :: Thu, 23 Apr 2020 16:23:02 +0530 Full Article
pac No short-term adverse impact of Mw on COVID-19 patients, says PGIMER By www.newkerala.com Published On :: Mon, 27 Apr 2020 11:12:01 +0530 Full Article
pac Withdraw obligation to pay energy capacity charges: Punjab CM By www.newkerala.com Published On :: Tue, 28 Apr 2020 08:43:02 +0530 Full Article
pac Chandigarh Administration eases lockdown norms, prohibits liquor, tobacco consumption at public spaces By www.newkerala.com Published On :: Mon, 04 May 2020 09:36:01 +0530 Full Article
pac Tamil Nadu forms high level committee to assess Covid-19 impact on economy By www.business-standard.com Published On :: Sat, 09 May 2020 19:07:00 +0530 The committee shall submit its final reports to the government within three months time and also submit an interim report Full Article
pac Stimulus package likely next week; Guaranteed higher working capital limit for MSME on cards By www.thehindubusinessline.com Published On :: Sat, 09 May 2020 22:34:47 +0530 Centre plans to raise the total borrowings to ₹12 lakh crore this fiscal Full Article Economy
pac COVID-19 testing capacity scaled to 95k per day: Govt By www.rediff.com Published On :: Sat, 09 May 2020 21:43:08 +0530 A total of 15,25,631 tests have been conducted so far across 332 government and 121 private laboratories. Full Article
pac Soft X-ray varied-line-spacing gratings fabricated by near-field holography using an electron beam lithography-written phase mask By scripts.iucr.org Published On :: 2019-08-16 A fabrication method comprising near-field holography (NFH) with an electron beam lithography (EBL)-written phase mask was developed to fabricate soft X-ray varied-line-spacing gratings (VLSGs). An EBL-written phase mask with an area of 52 mm × 30 mm and a central line density greater than 3000 lines mm−1 was used. The introduction of the EBL-written phase mask substantially simplified the NFH optics for pattern transfer. The characterization of the groove density distribution and diffraction efficiency of the fabricated VLSGs indicates that the EBL–NFH method is feasible and promising for achieving high-accuracy groove density distributions with corresponding image properties. Vertical stray light is suppressed in the soft X-ray spectral range. Full Article text
pac Expert confirms true impact of earthquakes in Devon and Cornwall - Devon Live By www.devonlive.com Published On :: Sat, 07 Dec 2019 08:00:00 GMT Expert confirms true impact of earthquakes in Devon and Cornwall Devon Live Full Article
pac Impacts on groundwater quality from abandoned hydrocarbon wells - GOV.UK By www.gov.uk Published On :: Tue, 22 Oct 2019 07:00:00 GMT Impacts on groundwater quality from abandoned hydrocarbon wells GOV.UK Full Article
pac Chirality in Biological Nanospaces: Reactions in Active Sites. By Nilashis Nandi. Pp. 209. CRC Press, 2011. Price £79.99. ISBN 9781439840023. By journals.iucr.org Published On :: Full Article text
pac Scaling diffraction data in the DIALS software package: algorithms and new approaches for multi-crystal scaling By journals.iucr.org Published On :: A new scaling program is presented with new features to support multi-sweep workflows and analysis within the DIALS software package. Full Article text
pac Crystal structure and Hirshfeld surface analysis of lapachol acetate 80 years after its first synthesis By scripts.iucr.org Published On :: 2019-08-19 Lapachol acetate [systematic name: 3-(3-methylbut-2-enyl)-1,4-dioxonaphthalen-2-yl acetate], C17H16O4, was prepared using a modified high-yield procedure and its crystal structure is reported for the first time 80 years after its first synthesis. The full spectroscopic characterization of the molecule is reported. The molecular conformation shows little difference with other lapachol derivatives and lapachol itself. The packing is directed by intermolecular π–π and C—H⋯O interactions, as described by Hirshfeld surface analysis. The former interactions make the largest contributions to the total packing energy in a ratio of 2:1 with respect to the latter. Full Article text
pac Different packing motifs mediated by weak interactions and polymorphism in the crystal structures of five 2-(benzylidene)benzosuberone derivatives By scripts.iucr.org Published On :: 2019-10-29 The syntheses and crystal structures of five 2-benzylidene-1-benzosuberone [1-benzosuberone is 6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one] derivatives, viz. 2-(4-methoxybenzylidene)-1-benzosuberone, C19H18O2, (I), 2-(4-ethoxybenzylidene)-1-benzosuberone, C20H20O2, (II), 2-(4-benzylbenzylidene)-1-benzosuberone, C25H22O2, (III), 2-(4-chlorobenzylidene)-1-benzosuberone, C18H15ClO, (IV) and 2-(4-cyanobenzylidene)-1-benzosuberone, C19H15NO, (V), are described. The conformations of the benzosuberone fused six- plus seven-membered ring fragments are very similar in each case, but the dihedral angles between the fused benzene ring and the pendant benzene ring differ somewhat, with values of 23.79 (3) for (I), 24.60 (4) for (II), 33.72 (4) for (III), 29.93 (8) for (IV) and 21.81 (7)° for (V). Key features of the packing include pairwise C—H⋯O hydrogen bonds for (II) and (IV), and pairwise C—H⋯N hydrogen bonds for (V), which generate inversion dimers in each case. The packing for (I) and (III) feature C—H⋯O hydrogen bonds, which lead to [010] and [100] chains, respectively. Weak C—H⋯π interactions consolidate the structures and weak aromatic π–π stacking is seen in (II) [centroid–centroid separation = 3.8414 (7) Å] and (III) [3.9475 (7) Å]. A polymorph of (I) crystallized from a different solvent has been reported previously [Dimmock et al. (1999) J. Med. Chem. 42, 1358–1366] in the same space group but with a packing motif based on inversion dimers resembling that seen in (IV) in the present study. The Hirshfeld surfaces and fingerprint plots for (I) and its polymorph are compared and structural features of the 2-benzylidene-1-benzosuberone family of phases are surveyed. Full Article text
pac Different packing motifs in the crystal structures of three molecular salts containing the 2-amino-5-carboxyanilinium cation: C7H9N2O2+·Cl−, C7H9N2O2+·Br− and C7H9N2O2+·NO3−·H2O By scripts.iucr.org Published On :: 2020-03-13 The syntheses and crystal structures of three molecular salts of protonated 3,4-diaminobenzoic acid, viz. 2-amino-5-carboxyanilinium chloride, C7H9N2O2+·Cl−, (I), 2-amino-5-carboxyanilinium bromide, C7H9N2O2+·Br−, (II), and 2-amino-5-carboxyanilinium nitrate monohydrate, C7H9N2O2+·NO3−·H2O, (III), are described. The cation is protonated at the meta-N atom (with respect to the carboxy group) in each case. In the crystal of (I), carboxylic acid inversion dimers linked by pairwise O—H⋯O hydrogen bonds are seen and each N—H group forms a hydrogen bond to a chloride ion to result in (100) undulating layers of chloride ions bridged by the inversion dimers into a three-dimensional network. The extended structure of (II) features O—H⋯Br, N—H⋯Br and N—H⋯O hydrogen bonds: the last of these generates C(7) chains of cations. Overall, the packing in (II) features undulating (100) sheets of bromide ions alternating with the organic cations. Intermolecular interactions in the crystal of (III) include O—H⋯O, O—H⋯(O,O), N—H⋯O, N—H⋯N and O—H⋯N links. The cations are linked into (001) sheets, and the nitrate ions and water molecules form undulating chains. Taken together, alternating (001) slabs of organic cations plus anions/water molecules result. Hirshfeld surfaces and fingerprint plots were generated to give further insight into the intermolecular interactions in these structures. The crystal used for the data collection of (II) was twinned by rotation about [100] in reciprocal space in a 0.4896 (15):0.5104 (15) ratio. Full Article text
pac 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
pac Full reciprocal-space mapping up to 2000 K under controlled atmosphere: the multipurpose QMAX furnace By scripts.iucr.org Published On :: 2020-04-23 A furnace that covers the temperature range from room temperature up to 2000 K has been designed, built and implemented on the D2AM beamline at the ESRF. The QMAX furnace is devoted to the full exploration of the reciprocal hemispace located above the sample surface. It is well suited for symmetric and asymmetric 3D reciprocal space mapping. Owing to the hemispherical design of the furnace, 3D grazing-incidence small- and wide-angle scattering and diffraction measurements are possible. Inert and reactive experiments can be performed at atmospheric pressure under controlled gas flux. It is demonstrated that the QMAX furnace allows monitoring of structural phase transitions as well as microstructural evolution at the nanoscale, such as self-organization processes, crystal growth and strain relaxation. A time-resolved in situ oxidation experiment illustrates the capability to probe the high-temperature reactivity of materials. Full Article text