In vitro screening of Chinese medicinal toothpastes: their effects on growth and plaque formation of mutans streptococci.
- C. Wu-yuan, L. Green, W. Birch
- Medicine, BiologyCaries Research
- 1 July 1990
Based on data obtained from this study, the incorporation of natural plant products or their derivatives into dentifrices seems a feasible means of promoting oral health and controlling dental diseases.
Effects of nabam on developingXenopus laevis embryos: Minimum concentration, biological stability, and degradative products
- W. Birch, K. Prahlad
- Chemistry, MedicineArchives of Environmental Contamination and…
- 1 November 1986
The aquatic environment when contaminated with very low levels of the fungicide nabam is hazardous to the development of amphibian embryos as well as the effects of combinations of these substances.
Effects of minute doses of ethylenebisdithiocarbamate disodium salt (nabam) and its degradative products on connective tissue envelopes of the notochord in Xenopus: an ultrastructural study.
- W. Birch, K. Prahlad
- BiologyCytobios
- 1986
The fungicide ethylenebisdithiocarbamate disodium salt (nabam) at 40 or 100 micrograms/l has deleterious effects on the survival of Xenopus laevis embryos and tissues of developing systems show definite alterations at the ultrastructural level.
A MECHANISM OF RESISTANCE TO HARE BROWSING
- W. Birch, M. Rousi, J. Tahvanainen, I. Uotila
- Environmental Science
- 1991
The palatability of the birch Betula pendula to the snowshoe hare Lepus timidus differed considerably depending on geographical origin and family. The seedlings of Betula platyphylla were more…
Evaluation of the novel vaginal contraceptive agent PPCM in preclinical studies using sperm hyaluronan binding and acrosome status assays
- B. B. North, M. Weitzel, G. Prins
- Biology, MedicineAndrology
- 20 September 2021
Polyphenylene carboxymethylene (PPCM) sodium salt is a promising multipurpose technology for prevention of both sexually transmitted infections (STIs) and pregnancy. In preclinical studies, PPCM has…
THERMOMECHANICAL PULP PROPERTIES OF WHITE BIRCH
- W. Birch
- Materials Science
- 2006
Handsheet properties of an experimental white birch thermomechanical pulp (TMP) were evaluated in terms of fiber length and were compared with those of a standard spruce/fir newsprint furnish. These…