Final results of space exposed experiment developed for students

SEEDS was a cooperative endeavor of NASA Headquarters, the NASA Langley Research Center, and the George W. Park Seed Company. Approximately 132,000 SEEDS kits containing Rutger's tomato seeds that had flown on LDEF, as well as similar seeds that had been stored in a climate-controlled warehouse for the same time period, were sent to schools in every state and 30 foreign countries. Student researchers from kindergarten through university compared germination and growth characteristics of the space-exposed and Earth-based seeds and returned data to NASA for analysis. Important scientific information was gained as students reported very little difference between the two seed groups

Role of the hindbrain in dorsoventral but not anteroposterior axial specification of the inner ear

An early and crucial event in vertebrate inner ear development is the acquisition of axial identities that in turn dictate the positions of all subsequent inner ear components. Here, we focus on the role of the hindbrain in establishment of inner ear axes and show that axial specification occurs well after otic placode formation in chicken. Anteroposterior (AP) rotation of the hindbrain prior to specification of this axis does not affect the normal AP orientation and morphogenesis of the inner ear. By contrast, reversing the dorsoventral (DV) axis of the hindbrain results in changing the DV axial identity of the inner ear. Expression patterns of several ventrally expressed otic genes such as NeuroD, Lunatic fringe (Lfng) and Six1 are shifted dorsally, whereas the expression pattern of a normally dorsal-specific gene, Gbx2, is abolished. Removing the source of Sonic Hedgehog (SHH) by ablating the floor plate and/or notochord, or inhibiting SHH function using an antibody that blocks SHH bioactivity results in loss of ventral inner ear structures. Our results indicate that SHH, together with other signals from the hindbrain, are important for patterning the ventral axis of the inner ear. Taken together, our studies suggest that tissue(s) other than the hindbrain confer AP axial information whereas signals from the hindbrain are necessary and sufficient for the DV axial patterning of the inner ear

Frequency dependent deformation of liquid crystal droplets in an external electric field

Nematic drops suspended in the isotropic phase of the same substance were subjected to alternating electrical fields of varying frequency. The system was carefully kept in the isotropic-nematic coexistance region, which was broadened due to small amounts of non-mesogenic additives. Whereas the droplets remained spherical at low (order of 10 Hz) and high frequencies (in the kHz range), at intermediate frequencies, we observed a marked flattening of the droplet in the plane perpendicular to the applied field. The deformation of the liquid crystal (LC) droplets occurred both in substances with positive and negative dielectric anisotropy. The experimental data can be quantitatively modelled with a combination of the leaky dielectric model and screening of the applied electric field due to the finite conductivity.Comment: minor change

Impact-parameter dependence of K-shell ionisation in slow collisioons of near-symmetric relitivistic atoms

Abstract. The total K vacancy production probability of both collision partners in a heavy-ion-atom collision is calculated, assuming that two processes contribute, a single-collision process where 2po and 2pa vacancies are created by direct ionisation of the united atom and subsequently redistributed, and a double-collision process where a 2pa vacancy is created in the first collision and partially transferred in the second. The model used for the single-collision process is valid for slow collisions between partners of a combined charge greater than 70. Numerical results are presented for the (I, I) and (I, Ag) systems and show improved agreement with recent experiments. 1

Stress management

Adpated from: Matthews, Wayne. The Time-Stress Connection. Balancing Work and Family Series. Columbus, Ohio: The Ohio State University Cooperative Extension Service.; Plain Talk About Handling Stress. Rockville, Maryland: National Institute of Mental Health, U.S. Department of Health and Human Services.Walker, Doris "Katey". Stress Management, Manhattan, Kansas, Kansas State University, June, 2001

Goal setting

Adapted from: Work Smarter — Not Harder, Balancing Work and Family. Columbus, Ohio: The Ohio State University Cooperative Extension Service.; Walker, Doris "Katey." Setting Goals for Resource Management and Consumer Purchases. Manhattan, Kansas: Cooperative Extension Service, Kansas State University, MF-874.Walker, Doris “Katey.” Setting Goals for Resource Management and Consumer Purchases. Manhattan, Kansas: Cooperative Extension Service, Kansas State University, MF-874

Time management

Adpated from: Making Every Minute Count. Balancing Work and Family Series. Columbus, Ohio: The Ohio State University Cooperative Extension Service.; Walker, Doris "Katey". Time Management, Manhattan, Kansas: Kansas State University Cooperative Extension Service.Walker, Doris “Katey”. Time Management, Manhattan, Kansas: Kansas State, June, 2001

Decision making

Adapted from: Groups — How They Decide. Kansas Family Community Leadership Resource Notebook Manhattan, Kansas, Kansas State University Cooperative Extension Service and Kansas Association for Family and Community Education, 1993; Walker, Doris "Katey". Improving Decision-Making Skills. Manhattan, Kansas: Kansas State University Cooperative Extension Service, MF-873, 1987.Walker, Doris “Katey”. Improving Decision-Making Skills. Manhattan, Kanas: Kansas State University Cooperative Extension Service, MF-873, 1987

Managing conflict

Adapted from: Douglas Dunn, Motivating People in Groups. University of Arizona Extension Service.; Charlie Griffin, Conflict Resolutions and Decision-Making. FCL Presentation, McPherson, KS, 1991.; Herb Lindgren. Managing Conflict Creatively. University of Nebraska Extension Service.Walker, Doris "Katey". Managing Conflict, Manhattan, Kansas, Kansas State University, June 2001