Zobrazeno 1 - 10
of 555
pro vyhledávání: '"D. F. Harrison"'
Publikováno v:
New Zealand Journal of Agricultural Research. 37:559-567
Subsoil loosening of an 8‐year‐old dryland pasture soil (Templeton silt loam) at either of two depths (27 or 47 cm) resulted in a significant (P 10%) in soil bulk density and a concomitant increase in soil porosity compared with undisturbed soil.
Autor:
Rudnick, Danny1, Boesdorfer, Sarah B.2 sbboesd@ilstu.edu
Publikováno v:
European Journal of Mathematics & Science Education. Jun2024, Vol. 5 Issue 2, p105-120. 16p.
Autor:
R. J. McPherson, P. Harbottle, Keith C. Cameron, D. F. Harrison, P. M. Fraser, C. D. A. McLay, N. P. Smith
Publikováno v:
Soil Science Society of America Journal. 56:1625-1628
A description is given of a modified lysimeter design and sampling procedure designed to prevent edge flow from occuring in large soil monolith lysimeters. An internal cutting ring at the base of the lysimeter casing produced a small annular gap betw
Autor:
D. F. Harrison
Publikováno v:
The Economic History Review. 45:240-261
Publikováno v:
Journal of health and human services administration. 24(2)
As the HIV/AIDS epidemic has evolved, heterosexual behaviors have come to be an increasingly important mode of transmission and rates of infection have increased faster among women generally and minority women in particular. Most of what we known abo
Publikováno v:
Adolescence. 35(139)
Finding effective ways to prevent adolescent pregnancy is a concern of public health officials, educators, social workers, parents, and legislators. Numerous programs exist, but there is debate as to whether it is the specific program itself or other
Publikováno v:
Family planning perspectives. 32(2)
Women's protection against HIV and sexually transmitted diseases (STDs) depends upon their ability to negotiate safer sex. It is important to know how cultural norms and gender roles, which vary by ethnicity, may either constrain or encourage negotia
Publikováno v:
Family planning perspectives. 30(5)
Few U.S. women protect themselves against both pregnancy and sexually transmitted diseases (STDs) by using an efficient contraceptive method and a condom. Understanding the factors that influence dual-method use could help improve interventions aimed
Publikováno v:
Archives of sexual behavior. 27(1)
Previous investigators have reported ethnic differences in the expression of sexual decision making and sexual behaviors in women. In a sample of women of low socioeconomic status between ages 18 and 45, we examined the influence of ethnicity and oth
Publikováno v:
Family planning perspectives. 29(4)
Black, Hispanic and white women recruited for an HIV prevention intervention were instructed in the use of the female condom and encouraged to try the device. Of the 231 women who completed the intervention, 29% tried the condom over the course of a