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- Cheng Yu Ma, Marvin Smith
- Plant Molecular Biology
- 1985
SummaryA physical map of safflower (Carthamus tinctorius L.) chloroplast DNA has been generated using SalI, PstI, KpnI and HindIII restriction endonucleases. The circular plastid genome (151 kbp) has… (More)
- Charles Edward Turner, Cheng Yu Ma, Mahmoud A ElSohly
- Journal of ethnopharmacology
- 1981
A gas-chromatographic procedure is outlined for the analysis of cocaine and cis- and trans-cinnamoylcocaines in coca leaves. The procedure was applied to the determination of these alkaloids in coca… (More)
- Cheng Yu Ma, Jin Li, Zhijun Bao, Qingwei Ruan, Zhuowei Yu
- BioMed research international
- 2015
Background. Advancing age, chronic inflammation, oxidative damage, and disorders of lipid metabolism are positively linked to the late-life cognitive impairment. Serum biomarkers may be associated… (More)
Environmental samples suspected of containing polychlorinated biphenyls (PCBs) and analyzed by Environmental Protection Agency (EPA) methods frequently contain non-PCB components, such as phinalates,… (More)
- Charles Edward Turner, Cheng Yu Ma, M. H. Russell, Mahmoud A ElSohly
- Bulletin on narcotics
- 1981
A method for the determination of encapsulated d-limonene dimercaptan (d-LDM), a possible marker for Cannabis sativa L. sprayed with herbicide, has been developed. The methodology includes a… (More)
La presente invention concerne un procede permettant de lire et d'analyser des donnees au moyen de dispositifs de type SAW (Surface Acoustic Wave), c'est-a-dire a onde acoustique de surface. Pour ce… (More)
Abstract : The chemical compositions of four colored smoke mixes, red, violet, green, and yellow, have been characterized to assess possible changes in composition due to the combustion of these… (More)
- Charles Edward Turner, Cheng Yu Ma, Mahmoud A ElSohly
- Bulletin on narcotics
- 1979
A method for the determination of cocaine content in coca leaves (Erythroxylum coca) has been developed. The procedure involves refluxing the powdered leaves in 95% ethanol for 15 minutes, followed… (More)
- Alice Mae Clark, Debra L. Huddleston, Cheng Yu Ma, Chuen-Huei Ho
- Pharmaceutical Research
- 1984
The in vitro antibacterial and anti-fungal activity of benz[g]isoquinoline-5,10-dione (1), benzo[g]quinoline-5, 10-dione (2), benzo[g]quinoline-5,6-dione (3), and anthraquinone (4) was determined… (More)
- Cheng Yu Ma, Chuen Huei. Ho, Barbara T. Walton, Glenn L. Kao, Michael R. Guerin
- Environmental science & technology
- 1984
Benz(g)isoquinoline-5,10-dione is shown to be a primary contributor to the insect teratogenicity associated with commercial reagent-grade acridine. Confirmation is based upon spectroscopic,… (More)