Publications by authors named "Daniel T Tan"
The global overuse of antibiotics has led to the emergence of drug-resistant pathogenic bacteria. Bacteria can combat β-lactams by expressing β-lactamases. Inhibitors of one class of β-lactamase, the serine-β-lactamases, are used clinically to prevent degradation of β-lactam antibiotics.
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- The study aimed to assess how common Chronic Obstructive Pulmonary Disease (COPD) is among adults in rural areas of the Philippines and identify related risk factors.
- Researchers surveyed 1,188 individuals aged 40 and older using detailed questionnaires and spirometry tests; they found that 20.8% had COPD.
- Key risk factors linked to higher prevalence included a long history of farming, using firewood for cooking, significant smoking history, and having a previous tuberculosis infection.*
5-Chloro-8-hydr-oxy-6-methyl-1,4-naphthoquinone.
Acta Crystallogr Sect E Struct Rep Online
March 2009
The mol-ecule of the title compound, C(11)H(7)ClO(3), is planar, with a maximum deviation of 0.0383 (10) Å from the naphthoquinone plane. An intra-molecular O-H⋯O hydrogen bond generates an S(6) ring motif.
View Article and Find Full Text PDFThe title compound, C(10)H(5)NO(5), features an intra-molecular O-H⋯O hydrogen bond, forming a six-membered ring with an S(6) ring motif. The nitro group makes a dihedral angle of 71.66 (5)° with the plane of the benzene ring to which it is bound.
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