Extra-large pore zeolite (ITQ-40) with the lowest framework density containing double four- and double three-rings.

The first zeolite structure (ITQ-40) that contains double four (D4) and double three (D3) member ring secondary building units has been synthesized by introducing Ge and NH(4)F and working in concentrated synthesis gels. It is the first time that D3-Rs have been observed in a zeolite structure. As was previously analyzed [Brunner GO, Meier, WM (1989) Nature 337:146-147], such a structure has a very low framework density (10.1 T/1,000 A(3)). Indeed, ITQ-40 has the lowest framework density ever achieved in oxygen-containing zeolites. Furthermore, it contains large pore openings, i.e., 15-member rings parallel to the [001] hexagonal axis and 16-member ring channels perpendicular to this axis. The results presented here push ahead the possibilities of zeolites for uses in electronics, control delivery of drugs and chemicals, as well as for catalysis.

A series of hexahydro[1,4]oxazino[3,4-a]isoquinolines as potential neuroleptics.

The synthesis and stereochemistry of trans-N,N-diethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro[1,4]oxazino[3,4-a]isoquinoline-3-carboxamide hydrochloride (16) and a series of analogues are described. 16 and its (+) isomer had neuroleptic properties in the Sidman avoidance test in gerbils. A few closely related amides of the trans series were active but cis amides were inactive as neuroleptics.

The family history of mental illness and welfare dependence.

During the year 1975 clinical interviews are obtained on all patients referred to the East Providence Community Mental Health Clinic for diagnosis and treatment. Data was obtained as to the presence or absence of a family history of similar mental illness. A hypothesis was tested that those patients with a family history of mental illness similar to that of the patient, were more likely to be welfare dependent. Correlations between patients with a positive family history of either schizophrenia or depression and welfare dependence were highly significant within social class 5 (unskilled laborers). However, these same correlations were negative within social class 4 (working class). The positive correlations suggest the possibility that the major mental illnesses are important factors in the need for welfare.

The effects of interactive video on cognitive achievement and attitude toward learning.

The purpose of this experimentally designed study was to determine the effects of an interactive videodisc program, entitled "Diabetic Health Assessment," versus traditional lecture on cognitive learning and affective behaviors of baccalaureate nursing students. It was hypothesized that: 1) there would be no significant difference in the cognitive achievement scores between those students taught by an interactive videodisc program (experimental group) compared to those students taught by a traditional lecture method (control group), and 2) there would be a statistically significant difference in student attitude toward learning between those students taught by an interactive videodisc program compared to students taught by a traditional lecture method. Eighty-three third-year baccalaureate nursing students at a major urban university served as subjects and were randomly assigned to either a control (n = 41) or an experimental group (n = 42). The multivariate analysis of covariance with two criteria and the pretest as the covariate was significant (p = .000, df = 4, 140) indicating that the adjusted posttest scores on the two measures were significantly different for the experimental group compared to the control group. The univariate F for the cognitive measure was nonsignificant (p = .283, df = 2, 72) indicating that students' achievement under interactive video is not significantly different than under traditional lecture. The univariate F for the affective measure was significant (p = .000, df = 2, 72) indicating that the students learning by interactive video possessed a more positive attitude toward learning than those learning by traditional lecture method of instruction.

Relationship of age and sex-role conflict for professional women in human services.

This study provides external validation of the Sex-role Conflict Scale. The relationship between age and sex-role conflict among women with educational interests was investigated. 128 female students in education were assessed on the conflict they experienced in various settings. The mean sex-role conflict scores, although hypothesized to be significantly different, were not among women ages 25 yr. and below, ages 26 to 39 yr., and ages 40 yr. and over. Also investigated was the relationship between age and sex-role conflict in dual-career respondents. Of the 29 respondents who met the criterion for classification, mean sex-role conflict scores were not significantly different for the three age groups. The nonlinear relationship between sex-role conflict and age does not have support for professional women who work in fields other than business.

Teaching the pelvic organ prolapse quantitation system.

OBJECTIVE: The objective of this study was to determine the ease with which the new Pelvic Organ Prolapse Quantitation system could be learned by residents and medical students. STUDY DESIGN: Standardized multiple-choice tests were administered to 51 obstetric and gynecology residents and medical students from 4 community-based and university-based programs. Parallel pretests and posttests were administered in conjunction with a 17-minute video demonstration of the Pelvic Organ Prolapse Quantitation system and with the addition of a visual memory aid. The posttest was repeated 3 months after the video presentation. RESULTS: The use of a 17-minute video significantly enhanced participants' ability to interpret examination findings when expressed in the terminology of the system (mean improvement in scores 33%, P <.0001). Posttest scores were similar regardless of the type of program or exposure to urogynecology faculty. These scores were maintained at the 3-month retesting. CONCLUSION: The Pelvic Organ Prolapse Quantitation system can be effectively taught by means of a public-domain video presentation.