ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAsymmetric 1,4-addition of organocuprates to chiral .alpha.,.beta.-unsaturated N-acyl-4-phenyl-2-oxazolidinones: a new approach the synthesis .beta.-branched carboxylic acidsErnesto Nicolas, K. C. Russell, and Victor J. HrubyCite this: Org. Chem. 1993, 58, 3, 766–770Publication Date (Print):January 1, 1993Publication History Published online1 May 2002Published inissue 1 January...

Despite a growing number of programs operating in the United States under guise “wilderness therapy,” consistent and accepted definition is lacking. Rehabilitative, outdoor-based approaches, such as “challenge courses,” “adventure-based or experience programs,” are often used interchangeably to describe therapy.” This paper attempts shed light on this issue by presenting an integrated wilderness therapy guide program design future research efforts. Three trends industry also explored which...

Three triaminotriazine units bearing two appended porphyrins undergo self-assembly through multiple hydrogen-bonding with three complementary dialkylbarbituric acids yielding a supramolecular macrocycle containing six porphyrins.

Few studies in the branding literature have approached brand equity from sport perspective, and even fewer focus on construct consumer viewpoint. The purpose of current research was to empirically test spectator-based (SBBE) model. Using a sample professional basketball consumers, results study show that 49-item, 13-construct model has reasonable fit data. extends understanding perspective by presenting empirical support for Several managerial implications are offered as result findings.

Aboriginal people in Canada (First Nations, Inuit and Métis) have a lower health status compared to the Canadian population. There is particular concern about mental wellbeing of First Nations adolescents living on reserves. Interventions following principles outdoor education adventure therapy appear be an appropriate fit for this These approaches proven effective non-Aboriginal populations, yet there very little evidence efficacy these types program adolescents. The primary purpose study...

This state of knowledge article provides an overview Adventure Therapy (AT) as it is practiced with adolescents in North America, presenting (a) current findings AT research adolescents, (b) critical issues AT, (c) the need for training and professional development (d) professionalization AT. Implications practitioners, researchers, consumers services are also discussed.

Discrete neutral assemblies in solution can be studied with the analytical method described here. A prerequisite is that one of components contains an ion‐complexing site, for example a crown ether unit. When alkali metal ions are added, charged form, which examined by electrospray mass spectrometry (ESMS) without disruption their hydrogen bonds. IL title stands ion labeling.

Quantitative measures of salt-bridge-type interactions in a highly exposed aqueous environment have been obtained by modifying the well-studied cyclophane platform 1 to include carboxylates close proximity bound, cationic guests, producing hosts 2 and 3. Many guests show significantly enhanced binding 3, but cations RNMe3+ type little or no enhancement. We propose that latter observations result from fact compounds very diffuse positive charges. Guests focused regions large, electrostatic...

In the present study, a new diacetylene compound (PDATAZ), which readily forms complementary hydrogen bonding self-assembly at air−water interface or in solid state with barbituric acid (BA) cyanuric (CA), was designed and synthesized. The photopolymerization studies of PDATAZ its assembly BA CA have revealed some important insights on chromatic properties polydiacetylenes. It found that property polydiacetylenes is determined by whether polymer chain capable adopting linear chainlike shape....

This study extends the leisure constraints research. Specifically, constraints-effects-mitigation model is examined in context of park visitors' time physical activity (LTPA). Model structure differences are tested between respondents two stages regular activity. Findings support where negotiation partially mediates constraint-participation and motivation-participation relationships. Differences structural parameter estimates adopting maintaining did not emerge. As such, applies to visitors...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRing substituted and other conformationally constrained tyrosine analogs of [cyclic] [D-Pen2,D-Pen5]enkephalin with .delta.-opioid receptor selectivityGeza Toth, K. C. Russell, Geoffrey Landis, Thomas H. Kramer, Lei Fang, Richard Knapp, Peg Davis, F. Burks, Henry I. Yamamura, Victor J. HrubyCite this: Med. Chem. 1992, 35, 13, 2384–2391Publication Date (Print):June 1, 1992Publication History Published online1 May 2002Published inissue 1 June...

Abstract Volunteer travel has become a substantial market segment in the tourism industry. Case studies have documented effects of volunteer on participants and host communities. The purpose this quantitative study was to determine impact experiences openness, civic attitudes, wisdom college elucidate predictors positive growth these intended outcomes. A multivariate latent model tested nature trajectories. Results indicate that program had immediate impacts all dependent variables. Evidence...

Wilderness therapy is seen as a treatment option for seriously troubled adolescents not being reached by traditional forms of treatment. The research shows that wilderness can improve self-perceptions, increase social adjustment, and reduce recidivism adolescent participants. However, on has been specific in describing how presenting problems are assessed therapeutic approaches relate to target outcomes. This article examines the process context illustrate related outcomes four client case...

[reaction: see text] Novel 10-membered pyrimidine enediynes (3 and 4) were synthesized in seven eight steps, respectively. These compounds compared for their abilities to undergo Bergman cyclization both thermally photochemically. Alcohol 3 readily cyclized photochemically (i)PrOH, while ketone 4 only showed efficient thermal cyclization. Both also shown cleave dsDNA under the appropriate conditions.

The synthesis and cyclization of acyclic quinoxaline, pyridine, pyrimidine enediynes (1−3) are described. These compounds were prepared using palladium(0) coupling trimethylsilyl acetylene to o-dihalo- or o-halotriflic heteroarenes. All in modest good yields. shown undergo Bergman cyclization. Kinetics over a minimum 3 half-lives used construct Arrhenius plots. Pyrimidine was found have an activation energy 16.1 kcal/mol. Cyclization the closest known aromatic analogue, o-diethynylbenzene...

Abstract Though wilderness therapy programs are growing in number and popularity, the theoretical basis for distinguishing from traditional therapeutic modalities is lacking. Existing models describing process have been stage-based, meaning has conceptualized as sequential discrete. Lost this conceptualization of dynamic interrelated nature factors reasoned to be present at all times varying degrees. To address limitations stage based lack a strong therapy, concurrent model proposed. This...