Publications by authors named "Zi-yun Wang"

4 Publications

  • Page 1 of 1

1-(4-Chloro-phen-yl)-3-{5-[(E)-2-phenyl-ethen-yl]-1,3,4-thia-diazol-2-yl}urea.

Acta Crystallogr Sect E Struct Rep Online 2011 Jan 29;67(Pt 2):o510. Epub 2011 Jan 29.

Department of Chemistry, Zhoukou Normal University, Zhoukou 466000, People's Republic of China.

In the title compound, C(17)H(13)ClN(4)OS, the 1,3,4-thia-diazole ring makes dihedral angles of 9.70 (15) and 7.22 (10)° with the benzene and phenyl rings, respectively; the dihedral angle between these two rings is 6.37 (19)°. In the crystal, pairs of N-H⋯N and C-H⋯O hydrogen bonds between inversion-related mol-ecules result in supra-molecular ribbons displaying alternate R(2) (2)(8) and R(2) (2)(14) graph-set ring motifs.
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http://dx.doi.org/10.1107/S1600536811002479DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3051607PMC
January 2011

[Health care status of female workers exposed to occupational hazards in Haidian district of Beijing].

Zhonghua Yu Fang Yi Xue Za Zhi 2009 Oct;43(10):880-4

The Bureau for Health Inspection and Supervision of Haidian District, Beijing, China.

Objective: To investigate the health care status of female workers exposed to occupational hazards in Haidian district of Beijing and improve the labor protection of female workers.

Methods: A questionnaire provided by National Center for Women and Children's Health of Chinese CDC was used in the survey conducted to collect information about health care status of female workers in 141 factories with occupational hazards including chemical poisons and physical factors (noise, libration, microwave, high frequency and low temperature).

Results: 141 factories were investigated, including 53 state-owned enterprises, 21 collective enterprises, 46 joint-stock enterprises, and 21 non-public enterprises. 12 251 female workers were surveyed, 10.19% (1249/12 251) of whom were exposed to occupational hazards. Of 141 factories studied, 16.31% (23/141) had no labor protection management organization.27.66% (39/141) did not provide pre-employment physical examination service to female workers.48.94% (69/141) didn't establish labor protection system for female workers in menstrual period. While, 21.28% (30/141) of the studied institutes deducted some salaries in the pregnancy, and 32.62% (46/141) deducted their wages during the puerperal period. 2.13% (3/141) arranged female workers in the posts which are forbidden by law (continuous heavy work load operation).9.93% (14/141) arranged pregnant female workers on the post forbidden by law.31.91% (45/141) and 33.33% (47/141) would deduct the time of prenatal medical examination and lactation from their working hours, respectively.39.01% (55/141) didn't afford the cost of fertility. 68.09% (96/141) had annual gynecological examination.45 factories were collected occupational examination reports, accounted for 31.91% (45/141). No female workers were found suffering from occupational disease. Of the 1865 occupational hazard factor monitoring points in 34 factories, there were 155 monitoring points, which were all noise monitoring points, did not meet the standard.

Conclusion: The current health-care status of female workers is not optimistic. It is necessary to consistently improve health care legislations, establish coordinated management mechanism and strengthen the publicity of policy to protect female workers.
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October 2009

[The application of Delphi method in improving the score table for the hygienic quantifying and classification of hotels].

Zhonghua Yu Fang Yi Xue Za Zhi 2009 Apr;43(4):287-92

School of Public Health, Peking University, Beijing 100191, China.

Objective: By means of Delphi method and expert panel consultations, to choose suitable indicators and improve the score table for classifying the hygienic condition of hotels so that it can be widely used at nationwide.

Methods: A two-round Delphi consultation was held to choose suitable indicators among 78 experts from 18 provinces, municipalities and autonomous regions. The suitable indicators were selected according to the importance recognized by experts.

Results: The average length of service in public health of the experts was (21.08 +/- 5.78) years and the average coefficient of experts' authorities C(r) was 0.89 +/- 0.07. The response rates of the two-round consultation were 98.72% (77/78) and 100.00% (77/77). The average feedback time were (8.49 +/- 4.48) d, (5.86 +/- 2.28) d, and the difference between two rounds was statistically significant (t = 4.60, P < 0.01). Kendall's coefficient were 0.26 (chi(2) = 723.63, P < 0.01), 0.32 (chi(2) = 635.65, P < 0.01) and opinions among experts became consistent. The score table for the hygienic quantifying and classification of hotels was composed of three first-class indicators (hygienic management, hygienic facilities and hygienic practices) and 36 second-class indicators. The weight coefficients of the three first-class indicators were 0.35, 0.34, 0.31.

Conclusion: Delphi method might be used in a large-scale consultation among experts and be propitious to improve the score table for the hygienic quantifying and classification.
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April 2009

1-(4-Methyl-benzo-yl)-3-[5-(4-pyrid-yl)-1,3,4-thia-diazol-2-yl]urea.

Acta Crystallogr Sect E Struct Rep Online 2008 Nov 8;64(Pt 12):o2255. Epub 2008 Nov 8.

In the title compound, C(16)H(13)N(5)O(2)S, the five non-H atoms of the urea linkage adopt a planar configuration owing to the presence of an intra-molecular N-H⋯O hydrogen bond. The maximum deviation from planarity is 0.022 (2) Å. The thia-diazole and pyridine heterocyclic rings are close to being coplanar, with a dihedral angle of 6.7 (2)° between their mean planes. Inter-molecular N-H⋯O hydrogen bonds link two neighbouring mol-ecules into centrosymmetric R(2) (2)(8) dimers. Four C atoms and the attached H atoms of the benzene ring are disordered over two positions of equal occupancy.
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http://dx.doi.org/10.1107/S1600536808035149DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2959837PMC
November 2008
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