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About 10,000 papers for “data collection”

Data collection and timing of data collection.

Stephan Gehring (1443118), Frank Kowalzik (12433533), Omar Okasha (384203) et al. · Figshare · 2024

<div><p>We assessed the seroepidemiology of SARS-CoV-2 infection and the incidence of coronavirus disease 2019 (COVID-19) before and during the rollout of COVID-19 vaccines, in a prospective observational cohort study on healthcare workers (HCWs) in a large tertiary hospital in Mainz, Germany. Antibody status was assessed during six visits between September 2020 and February 2022. Self-reported symptoms were collected using a smartphone application; symptomatic HCWs were tested using real-time polymerase chain reaction (RT-PCR) assays for SARS-CoV-2. Rates of virologically confirmed and severe COVID-19 were estimated using the U.S. Food and Drug Administration (FDA) and Coalition for Epidemic Preparedness Innovations (CEPI) case definitions, respectively, and were contrasted to background community transmission and circulating SARS-CoV-2 variants. A total of 3665 HCWs were enrolled (mean follow-up time: 18 months); 97 met the FDA definition of virologically confirmed COVID-19 (incidence rate (IR) 2.3/1000 person-months (PMs), one severe case). Most cases reported ≥2 symptoms, commonly, cough and anosmia or ageusia. Overall, 263 individuals seroconverted (IR 6.6/1000 PMs—2.9 times the estimated IR of COVID-19), indicating many cases were missed, either due to asymptomatic infections or to an atypical presentation of symptoms. A triphasic trend in anti-SARS-CoV-2 seroprevalence and seroconversion was observed, with an initial increase following the rollout of COVID-19 vaccines, a two-fold decline six months later, and finally a six-fold increase by the end of the study when Omicron was the dominant circulating variant. Despite the increase in infection rates at the end of the study due to the circulation of the Omicron variant, the infection and disease rates observed were lower than the published estimates in HCWs and rates in the general local population. Preferential vaccination of HCWs and the strict monitoring program for SARS-CoV-2 infection are the most likely reasons for the successful control of COVID-19 in this high-risk population.</p></div>

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Data collection

Elizabeth Milne, Jana Brinkert, Emily K. Farran et al. · OSF Preprints (OSF Preprints) · 2022

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Data collection

Hydronium -oxo- -dihydropyridine-sulfonate, Zhi-biao Zhu, A Shan Gao A et al. · 2009

R factor = 0.049; wR factor = 0.170; data-to-parameter ratio = 14.7. 2-Hydroxypyridine when treated with concentrated sulfuric acid is sulfonated at the 3-position to yield the title hydrated salt, H3O + C5H4NO3S 2H2O. In the crystal structure, the cations, anions and uncoordinated water molecules are linked by extensive O—H O and N—H O hydrogen bonds into a three-dimensional network. The crystal studied is a nonmerohedral twin with a twin component of 36%. Related literature For the treatment of non-merohedral twins, see: Spek (2003). For the cobalt salt of the anion, see: Zhu et al. (2007).

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Data collection

Mo K Radiation, Hong Dae Choi, A Pil Ja Seo et al. · 2009

R[F 2>2 (F 2)] = 0.027 wR(F 2) = 0.072 S = 1.11 2483 reflections 150 parameters 6872 measured reflections 2483 independent reflections 2178 reflections with I>2 (I) Rint = 0.028 H atoms treated by a mixture of independent and constrained refinement max = 0.32 e A ˚ 3 min = 0.56 e A ˚ 3

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Data collection

Mo K Radiation · 2008

Bruker SMART CCD area-detector diffractometer Absorption correction: none 2736 measured reflections Refinement R[F 2>2 (F 2)] = 0.082 wR(F 2) = 0.229 S = 1.13 1822 reflections 145 parameters 1 restraint T = 293 (2) K 0.12 0.10 0.07 mm 1822 independent reflections 1666 reflections with I>2 (I) Rint = 0.032 H-atom parameters constrained max = 1.43 e A ˚ 3 min = 1.17 e A ˚ 3

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Data collection

Mônica F. Z. J. Amaral, C Hélio A. Stefani C, Edward R. T. Tiekink B et al. · 2009

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Data collection

Michal Rouchal, A Marek Nečas B, Robert Vícha A et al. · 2011

R factor = 0.030; wR factor = 0.073; data-to-parameter ratio = 9.3. In the crystal sructure of the title compound, C17H21NO, the molecular packing is stabilized by intermolecular N—H O hydrogen bonds and additional weak N—H interactions, forming chains that propagate along the b axis. Conjugation of the carbonyl group and the benzene ring is rather attenuated due to a twisting of the carbonyl group from the plane of the benzene ring [torsion angle = 27.1 (2)]. Related literature For recent reviews of the biological activity of some

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Data collection

Wan-yun Liu, A Ping Huo, A Tong-lin Huang B et al. · 2009

R factor = 0.049; wR factor = 0.156; data-to-parameter ratio = 17.0. In the title compound, C19H15Cl2O2P, the dihedral angle between the mean planes of the phenyl rings bonded to the P atom is 75.4 (1). In the crystal, molecules are linked into chains running along the a axis by intermolecular O—H O hydrogen bonds. Molecules are further connected into a threedimensional array by weak C—H O interactions. Related literature For applications of the analogous compound (diphenylphosphinoyl)phenylmethanol, see: Clark et al. (2002). For

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Data collection

Dong-feng Li, Xiao-fei Zhu, Shuang Guan et al. · 2011

R factor = 0.042; wR factor = 0.136; data-to-parameter ratio = 16.9. In the title compound, C12H11NO2, the indole and methyl acrylate mean planes are inclined at an angle of 10.6 (1).In the crystal, N—H interactions link molecules into chains along [010] and weak intermolecular C—H O hydrogen bonds further consolidate the crystal packing. Related literature For general background to the synthesis of 3-substituted indole derivatives as precursors of potent anti-inflammatory and analgesic agents, see Radwan et al. (1997). For details of the synthesis, see García-Rubia et al. (2010). For related

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Data collection

Mo K Radiation, Muhammad Zia-ur-rehman, A Amir Sepehrianazar et al. · 2009

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Data collection

San-jun Peng A, Hai-yun Hou B, Mo K Radiation · 2008

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Data collection

Matthias Zeller, A Makuteswaran Sridharan, B Karnam J et al. · 2009

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Data collection

Nonius Cad Diffractometer, Jian-ning Guan, Rong Wan et al. · 2009

Absorption correction: scan (North et al., 1968) Tmin = 0.918, Tmax = 0.972 1963 measured reflections 1875 independent reflections 0.30 0.10 0.10 mm 1351 reflections with I>2 (I)

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Data collection

Paul G. Waddell, Rupert J. Rutledge, Jacqueline M et al. · 2013

R factor = 0.044; wR factor = 0.111; data-to-parameter ratio = 12.5. The title compound, C14H13NO3, adopts a twisted conforma-tion in the crystal, with an interplanar angle between the two benzene rings of 87.30 (5). Molecules within the structure are linked via O—H O interactions, forming a hydrogen-bonded chain motif with graph set C(7) along the glide plane in the [001] direction. Related literature For related phthalamic acid structures, see: Smith et al. (1983) and Bocelli et al. (1989). For the structure of a diaryl amide containing the 2-methoxyphenyl moeity, see: Parra et al. (2001). A description of hydrogen bonding in terms of graph sets is given by Etter (1990) and Bernstein et al. (1995). For standard bond lengths as calculated using crystal structure data, see Allen et al. (2006).

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Data collection

Methyl -amino--butanamido--methylbenzoate, Xiang Li, A Lian-shan Yuan et al. · 2008

R factor = 0.075; wR factor = 0.175; data-to-parameter ratio = 15.2. The title compound, C13H18N2O3, is an intermediate in the synthesis of compounds with medicinial applications. The crystal structure is stabilized by intermolecular N—H O, C—H N and C—H O hydrogen bonds. Related literature For bond-length data, see: Allen et al. (1987). For related

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Data collection

Qiong-jie Wu, A Xiao-hua Chen, B Jiang Jiang et al. · 2011

diffractometer Absorption correction: multi-scan (ABSCOR; Higashi, 1995) T min = 0.931, T max = 0.954 Refinement R[F 2>2 (F 2)] = 0.063 wR(F 2) = 0.157 S = 0.94 6308 reflections

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