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Timing of Sexual Behaviors among Female Adolescents of Mexican-Origin: The Role of Cultural Variables

  • Espinosa-Hernandez, Graciela;Bamaca-Colbert, Mayra Y.;Vasilenko, Sara A.;Mirzoeff, Charlotte A.
    • Child Studies in Asia-Pacific Contexts
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    • 제3권2호
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    • pp.159-173
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    • 2013
  • We examined the associations between Latino cultural variables and four sexual behaviors among female adolescents of Mexican origin. Participants ages 14 to 19 (N = 153; 70% born in the U.S) completed surveys about four sexual behaviors (making out, receiving and performing oral sex, and vaginal sex) and cultural variables (nativity, language use, familism, and importance of female virginity). Findings indicated that participants who were born in the U.S. were less likely to have engaged in making out and vaginal sex than participants born in Mexico. Participants reporting stronger familism were less likely to have engaged in making out and oral sex than participants reporting less familism. For all behaviors, placing a greater value on female virginity was associated with lesser odds of engaging in that behavior. This study expands our understanding of the role of nativity and Latino values in the sexual behaviors of Mexican-origin female adolescents.

Sandwich Intermediate Sitting-atop Complexation between Free Base meso-tetraarylporphyrins and Tellurium(IV) chloride

  • Dehghani, Hossein;Bakhshayesh, Sara;Shaterian, Maryam;Motamedi, Leila
    • Bulletin of the Korean Chemical Society
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    • 제31권4호
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    • pp.815-818
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    • 2010
  • Free base meso-tetraarylporphyrins ($H_2T(X)PP$) react with tellurium(IV) chloride ($TeCl_4$) in mild conditions for formation sandwich intermediate sitting-atop (i-SAT) complexes, [$TeCl_4(H_2T(X)PP)_2$]. $^1H$ NMR, $^{13}C$ NMR, UV-vis, FT-IR and elemental analysis were used for characterization of the products. In the proposed structure of the i-SAT complexes, four pyrroles of each porphyrin ring are tilted alternatively up and down and this appropriates suitable orientation of lone pairs of two pyrrolenine nitrogens for electron donation to a tellurium center. $^1H$ NMR and FT-IR results showed that in the produced complex, hydrogen atoms of porphyrin macrocycles remained on the pyrrole nitrogens.

Stathmin 1 in normal and malignant hematopoiesis

  • Machado-Neto, Joao Agostinho;Saad, Sara Teresinha Olalla;Traina, Fabiola
    • BMB Reports
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    • 제47권12호
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    • pp.660-665
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    • 2014
  • Stathmin 1 is a microtubule destabilizer that plays an important role in cell cycle progression, segregation of chromosomes, clonogenicity, cell motility and survival. Stathmin 1 overexpression has been reported in malignant hematopoietic cells and Stathmin 1 inhibition reduces the highly proliferative potential of leukemia cell lines. However, during the differentiation of primary hematopoietic cells, Stathmin 1 expression decreases in parallel to decreases in the proliferative potential of early hematopoietic progenitors. The scope of the present review is to survey the current knowledge and highlight future perspectives for Stathmin 1 in normal and malignant hematopoiesis, with regard to the expression, function and clinical implications of this protein.

Is Anything Ever New? Fashion Design Students' Perceptions of Piracy

  • Marcketti, Sara B.;Greder, Kate;Sinclair, Heather
    • International Journal of Costume and Fashion
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    • 제14권1호
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    • pp.17-28
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    • 2014
  • Design piracy is the unauthorized copying of another designer or manufacturer's work. While controversial, it is an institutionalized practice in the apparel industry. The purpose of this study was to better understand student perceptions of design piracy, particularly as it is one they will encounter in their future careers. The authors interviewed twenty-four apparel design students at a land-grant Midwestern University. Data was analyzed using theme analysis. Three themes developed including: 1) Expressions of cognitive dissonance in statements expressing enjoyment of the practice of design piracy as a consumer; yet disappointment when (and if) their own design work was copied. 2) Concerns regarding the definition of originality and the logistics of enforcing a plan against design piracy. 3) Differences of opinion regarding the prevalence of the practice, particularly if the students had industry experience or not. Advice for professors from students regarding piracy is included.

Structural damage detection using a multi-stage improved differential evolution algorithm (Numerical and experimental)

  • Seyedpoor, Seyed Mohammad;Norouzi, Eshagh;Ghasemi, Sara
    • Smart Structures and Systems
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    • 제21권2호
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    • pp.235-248
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    • 2018
  • An efficient method utilizing the multi-stage improved differential evolution algorithm (MSIDEA) as an optimization solver is presented here to detect the multiple-damage of structural systems. Natural frequency changes of a structure are considered as a criterion for damage occurrence. The structural damage detection problem is first transmuted into a standard optimization problem dealing with continuous variables, and then the MSIDEA is utilized to solve the optimization problem for finding the site and severity of structural damage. In order to assess the performance of the proposed method for damage identification, an experimental study and two numerical examples with considering measurement noise are considered. All the results demonstrate the effectiveness of the proposed method for accurately determining the site and severity of multiple-damage. Also, the performance of the MSIDEA for damage detection compared to the standard differential evolution algorithm (DEA) is confirmed by test examples.

Present State and Challenges for Women Seafarers in Korea

  • Park, Jinsoo;Jeong, Woolee;Park, Sara
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2013년도 춘계학술대회
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    • pp.239-241
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    • 2013
  • This paper surveyed & analyzed the career path of the 586 female cadets who graduated from the Korea Maritime University. According to the analysis, 154 graduates have the seafaring experience onboard, while 432 have no chance to work onboard. The figure indicated that one of the challenge is the number of female maritime officers who can engage in the boarding works was relatively limited. However, it is significant implication that about 80% of the graduate have been employed in a maritime industry including shipping, shipbuilding, public sectors and etc.

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Neutron and gamma-ray energy reconstruction for characterization of special nuclear material

  • Clarke, Shaun D.;Hamel, Michael C.;Di fulvio, Angela;Pozzi, Sara A.
    • Nuclear Engineering and Technology
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    • 제49권6호
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    • pp.1354-1357
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    • 2017
  • Characterization of special nuclear material may be performed using energy spectroscopy of either the neutron or gamma-ray emissions from the sample. Gamma-ray spectroscopy can be performed relatively easily using high-resolution semiconductors such as high-purity germanium. Neutron spectroscopy, by contrast, is a complex inverse problem. Here, results are presented for $^{252}Cf$ and PuBe energy spectra unfolded using a single EJ309 organic scintillator; excellent agreement is observed with the reference spectra. Neutron energy spectroscopy is also possible using a two-plane detector array, whereby time-of-flight kinematics can be used. With this system, energy spectra can also be obtained as a function of position. Spatial-dependent energy spectra are presented for neutron and gamma-ray sources that are in excellent agreement with expectations.

An Improved Technique for Pulmonary Endarterectomy

  • Azari, Ali;Moravvej, Zahra;Afshar, Sara;Bigdelu, Leila
    • Journal of Chest Surgery
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    • 제47권3호
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    • pp.287-290
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    • 2014
  • We report a modified technique for pulmonary endarterectomy (PEA) on a 67-year-old man with chronic thromboembolic pulmonary hypertension (CTEPH) who presented with dyspnea. He was referred to our medical center for coronary artery bypass grafting. CTEPH had not been detected in his first visit to another medical center, but upon re-evaluation, the diagnosis was confirmed. PEA was performed with a modified method, which seems to be safe and suitable for the removal of clot and fibrotic materials. Iatrogenic dissection was performed with normal saline injection in the pulmonary artery, and then, the clot was removed completely. Although the technique may not be applicable for all cases, it can be used as an alternative to using an aspirating dissector and a pair of forceps.

Cholestasis beyond the Neonatal and Infancy Periods

  • Khalaf, Racha;Phen, Claudia;Karjoo, Sara;Wilsey, Michael
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제19권1호
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    • pp.1-11
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    • 2016
  • Cholestasis results from impairment in the excretion of bile, which may be due to mechanical obstruction of bile flow or impairment of excretion of bile components into the bile canaliculus. When present, cholestasis warrants prompt diagnosis and treatment. The differential diagnosis of cholestasis beyond the neonatal period is broad and includes congenital and acquired etiologies. It is imperative that the clinician differentiates between intrahepatic and extrahepatic origin of cholestasis. Treatment may be supportive or curative and depends on the etiology. Recent literature shows that optimal nutritional and medical support also plays an integral role in the management of pediatric patients with chronic cholestasis. This review will provide a broad overview of the pathophysiology, diagnostic approach, and management of cholestasis beyond the neonatal and infancy periods.

Effect of capacitive coupling in superconducting coplanar waveguide resonator

  • Baek, Geonwoo;Kim, Bongkeon;Arif, Sara;Doh, Yong-Joo
    • 한국초전도ㆍ저온공학회논문지
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    • 제23권4호
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    • pp.6-9
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    • 2021
  • Superconducting coplanar waveguide (SCPW) resonators with high quality (Q) factor are widely used for developing quantum sensors and quantum information processors. Here we conducted numerical simulations of SCPW resonators to investigate the relationship between the Q factor and the coupling capacitance of the resonator. Varying the geometrical shape of both ends and coupling parameters of the SCPW resonator resulted in a change of the coupling capacitances and the Q factor as well. Our calculation results indicate that the performance of the SCPW resonator is highly sensitive to the capacitive coupling and searching for an optimal coupling condition would be crucial for developing high-performance SCPW resonator.