MyMedR

Azizul I, Ng SW

Acta Crystallogr Sect E Struct Rep Online, 2008;64(Pt 5):o917.

PMID: 21202399 DOI: 10.1107/S1600536808011021

3,5-dichloro-2-hydroxy-benzaldehyde), C(7)H(4)Cl(2)O(2), crystallizes as discrete mol-ecules, the conformation of which may be influenced by an intra-molecular hydr-oxy-carbonyl O-H⋯O hydrogen bond.

Fulltext 3-Chloro-quinuclidinium chloride

Azizul I, Zainudin A, Ng SW

Acta Crystallogr Sect E Struct Rep Online, 2008;64(Pt 5):o911.

PMID: 21202393 DOI: 10.1107/S1600536808011434

The cation of the title compound, C(7)H(13)ClN(+)·Cl(-), forms a linear hydrogen bond to the chloride anion. The cation is disordered about a mirror plane.

Fulltext Low-temperature redetermination of 3,4,5,6-tetra-hydro-pyrimidin-2(1H)-one

Rizal MR, Azizul I, Ng SW

Acta Crystallogr Sect E Struct Rep Online, 2008;64(Pt 5):o914.

PMID: 21202396 DOI: 10.1107/S160053680801115X

The low-temperature structure of the title compound, C(4)H(8)N(2)O, is ordered, whereas the central methyl-ene groups is disordered in the reported room-temperature structure. The molecule lies across a mirror plane; adjacent mol-ecules are linked by an N-H⋯O hydrogen bond into a chain.

Fulltext 4-Hydr-oxy-3-nitro-benzaldehyde

Rizal MR, Azizul I, Ng SW

Acta Crystallogr Sect E Struct Rep Online, 2008;64(Pt 5):o915.

PMID: 21202397 DOI: 10.1107/S1600536808011148

The hydroxyl group in each of the two independent mol-ecules of the title compound, C(7)H(5)NO(4), participates in two O-H⋯O hydrogen bonds, viz. one intra-molecular bond to the nitro group and one inter-molecular bond to the aldehyde group of the same mol-ecule in the next unit, resulting in a linear chain structure. The dihedral angle between the aromatic ring and the nitro group is 10.9 (3)° in one mol-ecule and 9.9 (2)° in the other.

Noise-induced hearing loss among manufacturing factory workers in Kuching, Sarawak: Prevalence and associated risk factors

Halim I, Azizul I, David CCH, Hanis A, Hafiz B, Naiemy R, et al.

Med J Malaysia, 2023 Sep;78(5):559-565.

PMID: 37775479

INTRODUCTION: Noise-induced hearing loss (NIHL) is a common problem worldwide. Increased globalisation, as well as industrialisation, gives rise to an increase in the incidence of NIHL worldwide. Malaysia is not spared from this problem, either. The objectives were to determine the prevalence of NIHL and its associated factors among manufacturing factory workers.

MATERIAL AND METHODS: A cross-sectional study was done in Kuching, Sarawak, involving 173 randomly selected respondents among manufacturing factory workers. Data collected were respondents' workplace monitoring data and their audiometry records obtained from the factory record, and the otoscopy examinations performed. In addition, respondents were required to fill up an interviewer-guided questionnaire.

RESULTS: The prevalence of NIHL was high (49.7%). The factors which were found to have a significant association with NIHL in bivariate analysis were age (p < 0.05, 95% CI), male gender (p < 0.05; OR - 7.60; CI 3.34 -18.38), duration of employment (p <0.05), knowledge of noise level (p < 0.05; OR - 4.11; CI 1.10 - 15.28), working at polishing department (p < 0.05; OR - 4.23; CI 2.13 - 8.43), and smoking (p < 0.05; OR - 39.6; CI 16.5 - 94.8). Pack-years of smoking were also found to have a significant association with p < 0.05. However, only smoking was statistically significant in multivariate analysis, where the risk of developing NIHL was 27.55 (p < 0.005; CI 10.74 - 70.64) among smokers.

CONCLUSION: The high prevalence of NIHL despite the existing Hearing Conservation Program (HCP) may indicate that there may be some elements in HCP that require close monitoring by the factory management, and the importance of smoking cessation among the workers exposed to noise at the workplace should be highlighted.

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