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1.
Materials (Basel) ; 13(15)2020 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-32722569

RESUMO

Extrusion based additive manufacturing of polymer composite magnets can increase the solid loading volume fraction with greater mechanical force through the printing nozzle as compared to traditional injection molding process. About 63 vol% of isotropic NdFeB magnet powders were compounded with 37 vol% of polyphenylene sulfide and bonded permanent magnets were fabricated while using Big Area Additive Manufacturing without any degradation in magnetic properties. The polyphenylene sulfide bonded magnets have a tensile stress of 20 MPa, almost double than that of nylon bonded permanent magnets. Additively manufactured and surface-protective-resin coated bonded magnets meet the industrial stability criterion of up to 175 °C with a flux-loss of 2.35% over 1000 h. They also exhibit better corrosion resistance behavior when exposed to acidic (pH = 1.35) solution for 24 h and also annealed at 80 °C over 100 h (at 95% relative humidity) over without coated magnets. Thus, polyphenylene sulfide bonded, additively manufactured, protective resin coated bonded permanent magnets provide better thermal, mechanical, and magnetic properties.

2.
J Couns Psychol ; 67(3): 371-385, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31855021

RESUMO

Despite continued empirical support for a relationship between group cohesion and therapeutic gain, few studies have attempted to examine predictors of cohesion during the life of counseling groups. The present investigation explored the impact of client variables, group characteristics, and first-session leader behaviors on changes in cohesion across time. Participants were 128 volunteer clients and 14 group therapists participating in 23 separate 8-week-long counseling groups. Results of latent growth curve (LGC) analysis indicated that a piecewise, linear-quadratic model best fit the data at the individual level, while a simplified linear model best fit the data at the group level. Overall, individual differences accounted for 80-97% of the total variance in cohesion intercept and slope terms, with the included covariates explaining 9-39% of this variation. Significant individual-level covariates were gender and anxious and avoidant attachment. The only significant group-level predictor was an interaction effect between leadership behaviors in the first session. Specifically, when leaders performed a high number of structuring behaviors in the absence of facilitating emotional sharing, cohesion was lower at the end of the first session. Limitations, areas of future research, and implications for the theory and practice of brief group counseling are discussed. (PsycInfo Database Record (c) 2020 APA, all rights reserved).


Assuntos
Aconselhamento/métodos , Relações Interpessoais , Liderança , Transtornos Mentais/terapia , Psicoterapia de Grupo/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Emoções/fisiologia , Feminino , Humanos , Masculino , Transtornos Mentais/psicologia , Pessoa de Meia-Idade , Adulto Jovem
3.
Sci Rep ; 6: 36212, 2016 10 31.
Artigo em Inglês | MEDLINE | ID: mdl-27796339

RESUMO

Additive manufacturing allows for the production of complex parts with minimum material waste, offering an effective technique for fabricating permanent magnets which frequently involve critical rare earth elements. In this report, we demonstrate a novel method - Big Area Additive Manufacturing (BAAM) - to fabricate isotropic near-net-shape NdFeB bonded magnets with magnetic and mechanical properties comparable or better than those of traditional injection molded magnets. The starting polymer magnet composite pellets consist of 65 vol% isotropic NdFeB powder and 35 vol% polyamide (Nylon-12). The density of the final BAAM magnet product reached 4.8 g/cm3, and the room temperature magnetic properties are: intrinsic coercivity Hci = 688.4 kA/m, remanence Br = 0.51 T, and energy product (BH)max = 43.49 kJ/m3 (5.47 MGOe). In addition, tensile tests performed on four dog-bone shaped specimens yielded an average ultimate tensile strength of 6.60 MPa and an average failure strain of 4.18%. Scanning electron microscopy images of the fracture surfaces indicate that the failure is primarily related to the debonding of the magnetic particles from the polymer binder. The present method significantly simplifies manufacturing of near-net-shape bonded magnets, enables efficient use of rare earth elements thus contributing towards enriching the supply of critical materials.

4.
J Couns Psychol ; 58(2): 170-182, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21319898

RESUMO

One of the major obstacles to seeking psychological help is the stigma associated with counseling and therapy. Self-stigma, the fear of losing self-respect or self-esteem as a result of seeking help, is an important factor in the help-seeking process. In the present study, college students meeting a clinical cutoff for psychological symptoms participated in 1 session of group counseling that either contained therapist self-disclosure or did not. In general, participants reported significantly less self-stigma following the session. Working alliance-bond and session depth significantly predicted the change in self-stigma. Furthermore, self-stigma (as well as bond, depth, psychological symptoms, and being female) predicted the intention to seek help following the session. Self-stigma and session depth also predicted interest in continuing with counseling. The therapist self-disclosure condition, however, had no effect on the change in self-stigma, intentions to seek help, or interest in continuing with group counseling.


Assuntos
Transtornos Mentais/terapia , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Psicoterapia de Grupo , Autoimagem , Estereotipagem , Adolescente , Adulto , Atitude Frente a Saúde , Feminino , Humanos , Iowa , Masculino , Transtornos Mentais/psicologia , Autorrevelação , Distribuição por Sexo , Estudantes/psicologia , Adulto Jovem
5.
J Clin Psychol ; 65(2): 131-46, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19132737

RESUMO

The role of religion and spirituality in psychotherapy has received growing attention in the last two decades, with a focus on understanding the ways that religion and spirituality relate to therapists, clients, and treatment methods. The authors reviewed recent empirical research on religion and spirituality in psychotherapy to inform practitioners about effective ways to incorporate the sacred into their clinical work. Three main areas are covered: religion/spirituality and therapists, religion/spirituality and clients, and religious/spiritual interventions. Research indicates that therapists are open to religious/spiritual issues, that clients want to discuss these matters in therapy, and that the use of religious/spiritual interventions for some clients can be an effective adjunct to traditional therapy interventions.


Assuntos
Psicoterapia , Espiritualidade , Humanos , Psicoterapia/métodos
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