The Iowa Homemaker vol.20, no.5

The Bambino in the Home, Editor, page 1 Children’s Hour Is on the Air, Dorothy Gross, page 2 I’ll Take Vanilla, Dorothy Lee Conquest, page 3 Child Development and Education Departments, page 4 Sally – 1941 Model, Jane Hakes, page 5 Playthings Make Learning Fun, Laura Brenner, page 7 What’s New in Home Economics, Helen Kubacky, page 8 Men Explore Homemaking, Eleanor White, page 10 Iowa State’s Name Goes Abroad, Margaret Anne Clark, page 11 Through the Day at Nursery School, Martha Ericson, page 12 Behind Bright Jackets, Marjorie Thomas, page 14 Alums in the News, Bette Simpson, page 16 From Journalistic Spindles, Ruth Jensen, page 1

The Iowa Homemaker vol.20, no.2

Your College Home, Editor, page 1 Home Economics Cabinet, Florence Byrnes, page 2 Study on a Budget, Dorothy Lee Conquest, page 4 Forward March with Confidence, Eleanor White, page 6 Home Economist from Far Away, Ruby Jackson, page 7 It’s a Man’s World, Gaynold Carroll, page 8 Art, Music, and Literature Mingle, Nancy Mason, page 10 Who’s Who on Campus, Dorothy Anne Roost, page 11 What’s New in Home Economics, page 12 Women’s Athletics Will Enter New Home, Jeanette Foster, page 14 Personalize Your Letter Writing, Virginia Kirkpatrick, page 15 Behind Bright Jackets, Marjorie Thomas, page 16 Coed Concoctions, Marian Dougan, page 18 Alums in the News, Bette Simpson, page 20 Give Beauty a Chance, Ida Halpin, page 22 Journalistic Spindles, Ruth Jensen, page 2

Swab Materials and Bacillus anthracis Spore Recovery from Nonporous Surfaces

Four swab materials were evaluated for their efficiency in recovery of Bacillus anthracis spores from steel coupons. Cotton, macrofoam, polyester, and rayon swabs were used to sample coupons inoculated with a spore suspension of known concentration. Three methods of processing for the removal of spores from the swabs (vortexing, sonication, or minimal agitation) and two swab preparations (premoistened and dry) were evaluated. Results indicated that premoistened swabs were more efficient at recovering spores than dry swabs (14.3% vs. 4.4%). Vortexing swabs for 2 min during processing resulted in superior extraction of spores when compared to sonicating them for 12 min or subjecting them to minimal agitation. Premoistened macrofoam and cotton swabs that were vortexed during processing recovered the greatest proportions of spores with a mean recovery of 43.6% (standard deviation [SD] 11.1%) and 41.7% (SD 14.6%), respectively. Premoistened and vortexed polyester and rayon swabs were less efficient, at 9.9% (SD 3.8%) and 11.5% (SD 7.9%), respectively

Quantitative Deep Sequencing Reveals Dynamic HIV-1 Escape and Large Population Shifts during CCR5 Antagonist Therapy In Vivo

High-throughput sequencing platforms provide an approach for detecting rare HIV-1 variants and documenting more fully quasispecies diversity. We applied this technology to the V3 loop-coding region of env in samples collected from 4 chronically HIV-infected subjects in whom CCR5 antagonist (vicriviroc [VVC]) therapy failed. Between 25,000–140,000 amplified sequences were obtained per sample. Profound baseline V3 loop sequence heterogeneity existed; predicted CXCR4-using populations were identified in a largely CCR5-using population. The V3 loop forms associated with subsequent virologic failure, either through CXCR4 use or the emergence of high-level VVC resistance, were present as minor variants at 0.8–2.8% of baseline samples. Extreme, rapid shifts in population frequencies toward these forms occurred, and deep sequencing provided a detailed view of the rapid evolutionary impact of VVC selection. Greater V3 diversity was observed post-selection. This previously unreported degree of V3 loop sequence diversity has implications for viral pathogenesis, vaccine design, and the optimal use of HIV-1 CCR5 antagonists

Micrografia eletrônica de bactérias Streptococcus sp.

Educação Superior::Ciências Biológicas::MicrobiologiaMicrografia eletrônica de varredura colorizada digitalmente de bactérias Streptococcus sp

Micrografia eletrônica de bactérias Streptococcus sp.

Educação Superior::Ciências Biológicas::MicrobiologiaMicrografia eletrônica de varredura colorizada digitalmente de bactérias Streptococcus sp

Ice Sheets and Sea Level

The estimate of the contribution of the Greenland Ice Sheet (GIS) to the higher sea level stand in the Eemian interglacial (between 2.2 and 3.4 m) is based on the assumption that there was no ice at the location of the Dye-3 ice core in southern Greenland. However, Eemian ice has been found at the base of this ice core. The presence of Eemian ice in south and coastal Greenland implies that the GIS was essentially intact in a much warmer climate and could not have contributed more than 1 to 2 m to sea-level rise

Chlorine Inactivation of Bacterial Bioterrorism Agents

Seven species of bacterial select agents were tested for susceptibility to free available chlorine (FAC). Under test conditions, the FAC routinely maintained in potable water would be sufficient to reduce six species by 2 orders of magnitude within 10 min. Water contaminated with spores of Bacillus anthracis spores would require further treatment