scholarly journals Hydrated metal(II) complexes of N-(6-amino-3,4-dihydro-3-methyl-5-nitroso-4-oxopyrimidin-2-yl) derivatives of glycine, glycylglycine, threonine, serine, valine and methionine: a monomeric complex and coordination polymers in one, two and three dimensions linked by hydrogen bonding. Corrigendum

2006 ◽  
Vol 62 (1) ◽  
pp. 165-165
Author(s):  
M. Luz Godino Salido ◽  
Paloma Arranz Mascarós ◽  
Rafaél López Garzón ◽  
M. Dolores Gutiérrez Valero ◽  
John N. Low ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Synchrotron Radiation ◽  
Data Collection ◽  
Coordination Polymers ◽  
Data Reduction ◽  
Three Dimensions ◽  
Compound Viii ◽  
Monomeric Complex ◽  
Cell Refinement ◽  
Derivatives Of

Some of the data collection details for compound (VIII) were incorrectly given in Table 1 of Godino Salido et al. (2004). The data for compound VIII in this paper were collected using synchrotron radiation at the Daresbury SRS station 9.8, λ = 0.6935 Å (Cernik et al., 1997; Clegg, 2000). The data were collected using a Bruker SMART 1K CCD diffractometer using ω rotation with narrow frames. The computer program used in the data collection was SMART (Bruker, 2001) and for cell refinement and data reduction SAINT (Bruker, 2001).

A measuring procedure for single-crystal diffraction using synchrotron radiation

1989 ◽  
Vol 22 (4) ◽  
pp. 382-383 ◽  
Author(s):  
M. Wendschuh-Josties ◽  
R. Wulf
Keyword(s):  
Synchrotron Radiation ◽  
Data Collection ◽  
Single Crystal ◽  
Real Time ◽  
Data Reduction ◽  
Single Crystal Diffraction ◽  
Precise Location ◽  
Precise Data ◽  
Measuring Procedure

The use of synchrotron radiation (SR) for single-crystal diffraction measurements requires special features of both the instrumentation and the measuring procedure. This paper describes a new algorithm for data collection developed for synchrotron radiation. It has been used successfully at the five-circle diffractometer at HASYLAB (DESY, Hamburg). The main features are: precise location of the reflection position, determination of the measuring parameters by pre-scanning, subsequent fine scanning, and real-time monitoring of several parameters of the beam conditions for data reduction. This allows fast and precise data collection.

scholarly journals Serial millisecond crystallography of membrane and soluble protein microcrystals using synchrotron radiation

IUCrJ ◽  
2017 ◽  
Vol 4 (4) ◽  
pp. 439-454 ◽  
Author(s):  
Jose M. Martin-Garcia ◽  
Chelsie E. Conrad ◽  
Garrett Nelson ◽  
Natasha Stander ◽  
Nadia A. Zatsepin ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Synchrotron Radiation ◽  
Data Collection ◽  
Structure Determination ◽  
Data Reduction ◽  
High Viscosity ◽  
Proteinase K ◽  
Cubic Phase ◽  
Biological Macromolecules ◽  
Synchrotron Source

Crystal structure determination of biological macromolecules using the novel technique of serial femtosecond crystallography (SFX) is severely limited by the scarcity of X-ray free-electron laser (XFEL) sources. However, recent and future upgrades render microfocus beamlines at synchrotron-radiation sources suitable for room-temperature serial crystallography data collection also. Owing to the longer exposure times that are needed at synchrotrons, serial data collection is termed serial millisecond crystallography (SMX). As a result, the number of SMX experiments is growing rapidly, with a dozen experiments reported so far. Here, the first high-viscosity injector-based SMX experiments carried out at a US synchrotron source, the Advanced Photon Source (APS), are reported. Microcrystals (5–20 µm) of a wide variety of proteins, including lysozyme, thaumatin, phycocyanin, the human A2Aadenosine receptor (A2AAR), the soluble fragment of the membrane lipoprotein Flpp3 and proteinase K, were screened. Crystals suspended in lipidic cubic phase (LCP) or a high-molecular-weight poly(ethylene oxide) (PEO; molecular weight 8 000 000) were delivered to the beam using a high-viscosity injector. In-house data-reduction (hit-finding) software developed at APS as well as the SFX data-reduction and analysis software suitesCheetahandCrystFELenabled efficient on-site SMX data monitoring, reduction and processing. Complete data sets were collected for A2AAR, phycocyanin, Flpp3, proteinase K and lysozyme, and the structures of A2AAR, phycocyanin, proteinase K and lysozyme were determined at 3.2, 3.1, 2.65 and 2.05 Å resolution, respectively. The data demonstrate the feasibility of serial millisecond crystallography from 5–20 µm crystals using a high-viscosity injector at APS. The resolution of the crystal structures obtained in this study was dictated by the current flux density and crystal size, but upcoming developments in beamline optics and the planned APS-U upgrade will increase the intensity by two orders of magnitude. These developments will enable structure determination from smaller and/or weakly diffracting microcrystals.

ANALISIS PERANGKAT PEMBELAJARAN GURU PENDIDIKAN AGAMA ISLAM BERDASARKAN KURIKULUM 2013 DI SMP NEGERI 1 PERCUT SEI TUAN DELI SERDANG

2019 ◽  
Vol 3 (2) ◽  
pp. 62
Author(s):  
Nur Aini
Keyword(s):  
Data Collection ◽  
Religious Education ◽  
Data Reduction ◽  
Qualitative Approach ◽  
Implementation Plan ◽  
Analysis Technique ◽  
Collection Data

<p>The purpose of this study was to determine: (1) Suitability of 2013<br />Curriculum Annual Program Preparation, (2) Suitability of Compilation of<br />the 2013 Curriculum Semester Program. (3) Appropriate components of<br />the Learning Implementation Plan (RPP) based on Permendikbud No.22<br />2016. The approach used in this study is a qualitative approach The data<br />analysis technique used is data collection, data reduction and data <br />presentation conclusions. The technique of guaranteeing the validity of the <br />data is done by checking trust, checking examination and checking<br />dependency. The results of the study can be concluded that the results of<br />the Analysis of Suitability of Annual Programming, Semester Program,<br />and Learning Implementation Plan can be categorized as "In Accordance"<br />because the results are obtained based on the scores of the Annual<br />Program, Semester Program and Learning Implementation Plan (RPP)<br />compiled by the teacher Islamic religious education in SMP Negeri 1<br />Percut Sei Tuan Deli Serdang.</p>

Administrasi sarana dan prasarana

2020 ◽  
Author(s):  
Melia sri devi
Keyword(s):  
Data Collection ◽  
Data Reduction ◽  
Descriptive Study ◽  
Educational Facilities ◽  
The World

Abstract — In the world of education,lthere are several components of educationthat are very instrumental in supportinglearning activities both directly andindirectly. One of the most importantcomponents is educational facilities andinfrastruncture. Administration ofeducational facilities and infrastructure isa very supportive thing for achieving thegoals of education. The teaching andlearning process will be more succesful ifeducational facilities and infrastucture areadequate. Education infrastructure andfacilities must always be complete. Thegovernment must always strive tocontinuously aquip aducational facilitiesand infrastructure for all levels and levelsof education. this article aims to determinethe administration of educational facilitiesand infrastructure in Indonesia along withthe obstacles faced and the efforts taken toovercome these obstacles. This research isa descriptive study with a qualitativeapproach. Data collection is done by themethod of observation, interviews anddocumentation. The data analysistechnique in this study is an interactiveanalysis consisting of data reduction, datapresentation and conclusion drawing.Check the validity of the data using sourcetriangulation and method triangulation.

Proton spin–spin coupling constants and intramolecular hydrogen bonding in bromine derivatives of 1,3-dihydroxybenzene

1976 ◽  
Vol 54 (14) ◽  
pp. 2228-2230 ◽  
Author(s):  
Ted Schaefer ◽  
J. Brian Rowbotham
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Proton Spin ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Hydroxyl Groups ◽  
Oh Groups ◽  
Spin Coupling Constants ◽  
Spin Spin Coupling ◽  
Derivatives Of

The conformational preferences in CCl4 solution at 32 °C of the hydroxyl groups in bromine derivatives of 1,3-dihydroxybenzene are deduced from the long-range spin–spin coupling constants between hydroxyl protons and ring protons over five bonds. Two hydroxyl groups hydrogen bond to the same bromine substituent in 2-bromo-1,3-dihydroxybenzene but prefer to hydrogen bond to different bromine substituents when available, as in 2,4-dibromo-1,3-dihydroxybenzene. When the OH groups can each choose between two ortho bromine atoms, as in 2,4,6-tribromoresorcinol, they apparently do so in a very nearly statistical manner except that they avoid hydrogen bonding to the common bromine atom.

Hydrogen-bonding patterns in bis[2,4,6-triazaniumylcyclohexane-1,3,5-tris(olate)-κ3O,O′,O′′]germanium(IV) tetrachloride hexahydrate

2016 ◽  
Vol 72 (1) ◽  
pp. 28-34
Author(s):  
Christian Neis ◽  
Bernd Morgenstern ◽  
Kaspar Hegetschweiler
Keyword(s):  
Hydrogen Bonding ◽  
Hydration Shell ◽  
Chloride Ions ◽  
Three Dimensions ◽  
Water Molecules ◽  
Amino Groups ◽  
Compound C ◽  
Hydrated Salt ◽  
Phd Thesis ◽  
Hydroxy Groups

A first preliminary report on the crystal structure of a hydrated salt formulated as [Ge(taci)2]Cl4·13H2O (taci is 1,3,5-triamino-1,3,5-trideoxy-cis-inositol) appeared more than 20 years ago [Ghisletta (1994). PhD thesis, ETH Zürich. Switzerland]. At that time it was not possible to discriminate unambiguously between the positions of some of the chloride ions and water O atoms, and disorder was thus postulated. In a new determination, a conclusive scheme of hydrogen bonding proves to be a particularly appealing aspect of the structure. Single crystals of the title compound, C12H30GeN6O64+·4Cl−·6H2O or [Ge(taci)2]2Cl8·12H2O, were grown from an aqueous solution by slow evaporation of the solvent. The two [Ge(taci)2]4+cations exhibit a double-adamantane-type structure with exclusive O-atom coordination and approximateD3dsymmetry. The taci ligands adopt a zwitterionic form with deprotonated hydroxy groups and protonated amino groups. Both cations are hydrogen bonded to six water molecules. The structure of the hydration shell of the two cations is, however, slightly different. The {[Ge(taci)2]·6H2O}4+aggregates are interlinked in all three dimensions by further hydrogen bonds of the types N—H...Cl...H—N, N—H...O(H)2...H—N, (Ge)O...H—O(H)...H—N, N—H...O(H)—H...Cl...H—N, (Ge)O...H—O—H...Cl...H—N, N—H...O(H)—H...Cl...H—(H)O...H—N, (Ge)O...H—O—H...Cl...H—(H)O...H—N and Ge(O)...H—O—H...Cl...H—O—H...O(Ge).

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