Synthesis and assembly of self-complementary calix[4]arenes.

A calix[4]arene was designed to reversibly dimerize and form an egg-shaped enclosure. Adhesive interactions in the assembly were provided by four self-associating ureas, which form a cyclic array containing 16 hydrogen bonds. The synthesis was completed in four steps from the previously described O,O',O",O"'-tetrabenzylcalix[4]arene. Evidence for dimerization of the calixarene tetraurea was provided by H NMR, mass spectrometry, and the observation of encapsulated molecules. The resulting cavity was of sufficient size to capture guests such as ethyl benzene and p-xylene.

Parent-Child Interaction and Children's Self-Concept

This study is designed to investigate the relationships between marital communication, the quality of parents' ability to assist their children in joint problem-solving, and children's independent mastery attempts and perceived competence at problem-solving, and behavioral indicators of self-esteem. Couples' skill at regulating their own and their children's negative affect within the marital and parent-child family subsystems is hypothesized to predict the quality of their assistance, or scaffolding behavior, to their children during joint problem-solving. Further, the quality of parental scaffolding behavior is expected to predict children's independent mastery attempts, levels of perceived competence at problemsolving, and behavioral indicators of self-esteem. Families for the study will be those with children between 3 1/2 to six years of age recruited from subjects participating in a longitudinal study of communication in marriage being conducted at the Denver Center for Marital and Family Studies. Families will participate in three interaction tasks designed to tap parental scaffolding behavior during problemsolving with their children. Children will be administered self-report measures to tap their perceived competence at such problem-solving as those in the interaction tasks and parents will complete a questionnaire tapping the behavioral indicators of their child's self-esteem. Family interaction data will be coded with the use of a microanalytic coding system developed by this study, the Parent-Child Interaction Coding System. Marital communication data at three time points, premaritally, during the transition to parenthood , and concurrently, will be obtained from couples' interactions from the longitudinal study. The clinical significance of this study includes implications for training couples how to effectively regulate negative affect and offer their children sensitive assistance during joint problem-solving.

Maintaining and donning the self-contained breathing apparatus (SCBA) /

"April 1982."

Plain catechetical instruction for young communicants, designed to assist them in forming Scriptural views of the Lord's Supper. With an address to young persons not yet communicants, and a few meditations and helps for self-examination.

Mode of access: Internet.

Personality development; a practical self-teaching course, comprising health, posture, dress, grooming, voice and speech, conversation, social and business etiquette, self-confidence, poise, living and working with others, acquiring background, improvement of mind and character, achieving success and happiness,

"Suggestions for reading" at end of some of the chapters.

Telepathy and the subliminal self; an account of recent investigations regarding hypnotism, automatism, dreams, phantasms, and related phenomena,

Mode of access: Internet.

Means and ends : or, Self-training /

Added title-page: The school library. Juvenile series, 3.

Aims and aids for girls and young women, on the various duties of life, including physical, intellectual, and moral development; self-culture, improvement, dress, beauty, fashion, employment, education, the home, relations, their duties to young men, marriage, womanhood and happiness.

Mode of access: Internet.

The education of the will, the theory and practice of self-culture,

Mode of access: Internet.

Direct support and general support maintenance manual for hull, powerplant, drive controls, tracks, suspension, and associated components : howitzer, medium, self-propelled, 155mm, M109A2 (2350-01-031-0586) and howitzer, medium, self-propelled, 155mm, M109A3 (2350-01-031-8851) ....

"30 January 1987"--P. i.

Direct and general support maintenance manual : gun, field artillery, self-propelled, 175-mm, M107 (2350-00-436-6635) and howitzer, heavy, self-propelled, 8-inch, M110 (2350-00-439-6243) and Howitzer, heavy, self-propelled, 8-inch, M110A1 (2350-01-013-3914), hull and related components.

"April 1977."

Organizational maintenance manual for hull, powerplant, drive controls, tracks, suspension and associated hardware : Howitzer, medium, self-propelled, 155mm M109A2 (2350-01-031-0586) and Howitzer, medium, self-propelled, 155mm M109A3 (2350-01-031-8851).

Includes index.

Organizational maintenance manual for hull, powerplant, drive controls, tracks, suspension, and associated hardware : howitzer, medium, self-propelled, 155mm M109A2 (2350-01-031-0586) and howitzer, medium, self-propelled, 155mm M109A3 (2350-01-031-8851) and howitzer, medium, self-propelled, 155mm M109A4 (2350-01-277-5770).

Includes index.