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1.
Soc Sci Res ; 106: 102722, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35680359

RESUMEN

Research evaluating the relationship between work and crime has paid little attention to behavior in the workplace. We evaluate four hypotheses regarding the work-crime relationship: (1) Employment and crime are negatively related, (2) Employment displaces offending from the street to the workplace, (3) Work offending emboldens street offending, and (4) Work offending has no association with street offending. Drawing on longitudinal data from a high-risk sample of young adults from The Pathways to Desistance study, we use hybrid fixed effects models with measures of street property offending and workplace property offending to test the hypotheses. Our findings indicate a positive association between work property offending and street property offending with the inclusion of fixed effects. Findings also provide evidence that job quality moderates this relationship. We elaborate on the role of workplace behavior in the broader work-crime relationship and explore the mechanisms underlying the associations we identify.


Asunto(s)
Crimen , Lugar de Trabajo , Humanos , Salarios y Beneficios , Adulto Joven
2.
Phys Rev Lett ; 120(2): 021101, 2018 Jan 12.
Artículo en Inglés | MEDLINE | ID: mdl-29376729

RESUMEN

We report on the observation of new properties of secondary cosmic rays Li, Be, and B measured in the rigidity (momentum per unit charge) range 1.9 GV to 3.3 TV with a total of 5.4×10^{6} nuclei collected by AMS during the first five years of operation aboard the International Space Station. The Li and B fluxes have an identical rigidity dependence above 7 GV and all three fluxes have an identical rigidity dependence above 30 GV with the Li/Be flux ratio of 2.0±0.1. The three fluxes deviate from a single power law above 200 GV in an identical way. This behavior of secondary cosmic rays has also been observed in the AMS measurement of primary cosmic rays He, C, and O but the rigidity dependences of primary cosmic rays and of secondary cosmic rays are distinctly different. In particular, above 200 GV, the secondary cosmic rays harden more than the primary cosmic rays.

3.
Phys Rev Lett ; 121(5): 051101, 2018 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-30118264

RESUMEN

We present the precision measurement from May 2011 to May 2017 (79 Bartels rotations) of the proton fluxes at rigidities from 1 to 60 GV and the helium fluxes from 1.9 to 60 GV based on a total of 1×10^{9} events collected with the Alpha Magnetic Spectrometer aboard the International Space Station. This measurement is in solar cycle 24, which has the solar maximum in April 2014. We observed that, below 40 GV, the proton flux and the helium flux show nearly identical fine structures in both time and relative amplitude. The amplitudes of the flux structures decrease with increasing rigidity and vanish above 40 GV. The amplitudes of the structures are reduced during the time period, which started one year after solar maximum, when the proton and helium fluxes steadily increase. Above ∼3 GV the p/He flux ratio is time independent. We observed that below ∼3 GV the ratio has a long-term decrease coinciding with the period during which the fluxes start to rise.

4.
Phys Rev Lett ; 121(5): 051102, 2018 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-30118287

RESUMEN

We present high-statistics, precision measurements of the detailed time and energy dependence of the primary cosmic-ray electron flux and positron flux over 79 Bartels rotations from May 2011 to May 2017 in the energy range from 1 to 50 GeV. For the first time, the charge-sign dependent modulation during solar maximum has been investigated in detail by leptons alone. Based on 23.5×10^{6} events, we report the observation of short-term structures on the timescale of months coincident in both the electron flux and the positron flux. These structures are not visible in the e^{+}/e^{-} flux ratio. The precision measurements across the solar polarity reversal show that the ratio exhibits a smooth transition over 830±30 days from one value to another. The midpoint of the transition shows an energy dependent delay relative to the reversal and changes by 260±30 days from 1 to 6 GeV.

5.
Phys Rev Lett ; 119(25): 251101, 2017 Dec 22.
Artículo en Inglés | MEDLINE | ID: mdl-29303302

RESUMEN

We report the observation of new properties of primary cosmic rays He, C, and O measured in the rigidity (momentum/charge) range 2 GV to 3 TV with 90×10^{6} helium, 8.4×10^{6} carbon, and 7.0×10^{6} oxygen nuclei collected by the Alpha Magnetic Spectrometer (AMS) during the first five years of operation. Above 60 GV, these three spectra have identical rigidity dependence. They all deviate from a single power law above 200 GV and harden in an identical way.

6.
Phys Rev Lett ; 117(23): 231102, 2016 Dec 02.
Artículo en Inglés | MEDLINE | ID: mdl-27982618

RESUMEN

Knowledge of the rigidity dependence of the boron to carbon flux ratio (B/C) is important in understanding the propagation of cosmic rays. The precise measurement of the B/C ratio from 1.9 GV to 2.6 TV, based on 2.3 million boron and 8.3 million carbon nuclei collected by AMS during the first 5 years of operation, is presented. The detailed variation with rigidity of the B/C spectral index is reported for the first time. The B/C ratio does not show any significant structures in contrast to many cosmic ray models that require such structures at high rigidities. Remarkably, above 65 GV, the B/C ratio is well described by a single power law R^{Δ} with index Δ=-0.333±0.014(fit)±0.005(syst), in good agreement with the Kolmogorov theory of turbulence which predicts Δ=-1/3 asymptotically.

7.
Phys Rev Lett ; 117(9): 091103, 2016 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-27610839

RESUMEN

A precision measurement by AMS of the antiproton flux and the antiproton-to-proton flux ratio in primary cosmic rays in the absolute rigidity range from 1 to 450 GV is presented based on 3.49×10^{5} antiproton events and 2.42×10^{9} proton events. The fluxes and flux ratios of charged elementary particles in cosmic rays are also presented. In the absolute rigidity range ∼60 to ∼500 GV, the antiproton p[over ¯], proton p, and positron e^{+} fluxes are found to have nearly identical rigidity dependence and the electron e^{-} flux exhibits a different rigidity dependence. Below 60 GV, the (p[over ¯]/p), (p[over ¯]/e^{+}), and (p/e^{+}) flux ratios each reaches a maximum. From ∼60 to ∼500 GV, the (p[over ¯]/p), (p[over ¯]/e^{+}), and (p/e^{+}) flux ratios show no rigidity dependence. These are new observations of the properties of elementary particles in the cosmos.

8.
Appetite ; 96: 160-165, 2016 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-26403933

RESUMEN

BACKGROUND: While there have been considerable advances in the medical management of type 1 diabetes mellitus (T1DM), for many, glycaemic control remains substandard. Nutrition and eating behaviour are important additional factors to consider with regards to T1DM management and outcomes. Intuitive eating is one such factor, and has not previously been investigated in T1DM. With this in mind, we undertook a study examining the relationship between intuitive eating and glycaemic control in adolescents with T1DM. METHODS: A case-control study of adolescents with established T1DM, and age/sex matched controls was conducted. Demographic information, the Intuitive Eating Scale (IES), and HbA1c were collected. Statistical analysis was undertaken to explore associations between the IES and HbA1c as a marker of glycaemic control. RESULTS: Data on 38 adolescents with T1DM, and 39 age/sex matched controls were obtained. Those with T1DM had significantly lower (by 0.5 SD) IES scores compared to controls (p = 0.009). Higher values of both total IES and the Eating for physical rather than emotional reasons subscale were associated with lower HbA1c: HbA1c 22% lower/whole unit increase in total IES mean score, HbA1c 11% lower/whole unit increase in Eating for physical rather than emotional reasons mean score, p = 0.017 and p = 0.009 respectively. CONCLUSION: In adolescents with T1DM, there appears to be a strong association between intuitive eating, in particular the effect of emotion on eating, and glycaemic control. In addition, those with T1DM have lower scores for their intuitive eating behaviour compared to controls. Emotional eating could be a future target for screening and potentially intervening in those with T1DM, as part of a wider treatment package to improve glycaemic control. Continuing efforts are needed to fully understand the important dynamics of diabetes, adolescence, diet, emotion, and how these factors affect long term outcomes in those with T1DM.


Asunto(s)
Glucemia/metabolismo , Conducta Alimentaria/psicología , Adolescente , Índice de Masa Corporal , Estudios de Casos y Controles , Diabetes Mellitus Tipo 1/dietoterapia , Femenino , Humanos , Masculino
9.
Phys Rev Lett ; 115(21): 211101, 2015 Nov 20.
Artículo en Inglés | MEDLINE | ID: mdl-26636836

RESUMEN

Knowledge of the precise rigidity dependence of the helium flux is important in understanding the origin, acceleration, and propagation of cosmic rays. A precise measurement of the helium flux in primary cosmic rays with rigidity (momentum/charge) from 1.9 GV to 3 TV based on 50 million events is presented and compared to the proton flux. The detailed variation with rigidity of the helium flux spectral index is presented for the first time. The spectral index progressively hardens at rigidities larger than 100 GV. The rigidity dependence of the helium flux spectral index is similar to that of the proton spectral index though the magnitudes are different. Remarkably, the spectral index of the proton to helium flux ratio increases with rigidity up to 45 GV and then becomes constant; the flux ratio above 45 GV is well described by a single power law.

10.
Phys Rev Lett ; 114(17): 171103, 2015 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-25978222

RESUMEN

A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, acceleration, and propagation of cosmic rays. We present the detailed variation with rigidity of the flux spectral index for the first time. The spectral index progressively hardens at high rigidities.

11.
Gene Ther ; 21(1): 106-14, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24225639

RESUMEN

For successful clinical tumor immunotherapy outcomes, strong immune responses against tumor antigens must be generated. Cell-based vaccines compromise one strategy with which to induce appropriate strong immune responses. Previously, we established a natural killer T-cell (NKT) ligand-loaded, adenoviral vector-transduced B-cell-based anticancer cellular vaccine. To enhance tumor antigen delivery to B cells, we established a modified adenoviral vector (Ad-k35) that encoded a truncated form of the breast cancer antigen Her2/neu (Ad-k35HM) in which fiber structure was substituted with adenovirus serotype 35. We observed increased tumor antigen expression with Ad-k35HM in both human and murine B cells. In addition, an Ad-k35HM-transduced B-cell vaccine elicited strong antigen-specific cellular and humoral immune responses that were further enhanced with the additional loading of soluble NKT ligand KBC009. An Ad-k35HM-transduced, KBC009-loaded B-cell vaccine efficiently suppressed the in vivo growth of established tumors in a mouse model. Moreover, the vaccine elicited human leukocyte antigen (HLA)-A2 epitope-specific cytotoxic T-cell responses in B6.Cg (CB)-Tg (HLA-A/H2-D) 2Enge/Jat mice. These findings indicated that the Ad-k35 could be appropriate for the preclinical and clinical development of B-cell-based anticancer immunotherapies.


Asunto(s)
Linfocitos B/inmunología , Vacunas contra el Cáncer , Dependovirus/genética , Neoplasias Mamarias Experimentales/terapia , Receptor ErbB-2/genética , Animales , Linfocitos B/virología , Vacunas contra el Cáncer/inmunología , Células Cultivadas , Dependovirus/metabolismo , Femenino , Vectores Genéticos , Antígeno HLA-A2/inmunología , Humanos , Inmunoterapia , Neoplasias Mamarias Experimentales/inmunología , Ratones , Ratones Endogámicos BALB C , Células T Asesinas Naturales/inmunología , Receptor ErbB-2/metabolismo , Linfocitos T Citotóxicos/inmunología , Ensayos Antitumor por Modelo de Xenoinjerto
12.
Phys Rev Lett ; 112(3): 034801, 2014 Jan 24.
Artículo en Inglés | MEDLINE | ID: mdl-24484143

RESUMEN

The first experimental study is presented of a corrugated wall device that uses wakefields to remove a linear energy correlation in a relativistic electron beam (a "dechirper"). Time-resolved measurements of both longitudinal and transverse wakefields of the device are presented and compared with simulations. This study demonstrates the feasibility to employ a dechirper for precise control of the beam phase space in the next generation of free-electron-lasers.


Asunto(s)
Electrones , Rayos Láser , Modelos Teóricos , Aceleradores de Partículas
13.
Phys Rev Lett ; 113(12): 121102, 2014 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-25279617

RESUMEN

Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at ∼30 GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons.

14.
Phys Rev Lett ; 113(12): 121101, 2014 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-25279616

RESUMEN

A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200 GeV the positron fraction no longer exhibits an increase with energy.

15.
Phys Rev Lett ; 113(22): 221102, 2014 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-25494065

RESUMEN

We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e^{+}+e^{-}) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. Above 30.2 GeV, the flux can be described by a single power law with a spectral index γ=-3.170±0.008(stat+syst)±0.008(energy scale).

16.
Acta Anaesthesiol Scand ; 57(4): 480-7, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23240685

RESUMEN

BACKGROUND: Dexmedetomidine has been shown to reduce pro-inflammatory cytokine levels in rats with sepsis and in severely ill patients. The aim of this study was to document the effects of dexmedetomidine on inflammatory responses during and after surgery. MATERIALS AND METHODS: Patients undergoing laparoscopic cholecystectomy were enrolled. After induction of anaesthesia, patients in the dexmedetomidine group (n = 24, group D) received a loading dose of dexmedetomidine (1.0 µg/kg), followed by infusion of dexmedetomidine at 0.5 µg/kg/h. A saline-treated group (n = 23, group S) served as a control. Intraoperative mean arterial pressure (MAP), heart rate (HR), and amount of rescue analgesic administered as post-anaesthetic care were compared between the groups. The pro-inflammatory cytokines tumour necrosis factor (TNF)-α, interleukin (IL)-1ß, and IL-6, and anti-inflammatory cytokines IL-4 and IL-10 were quantified by sandwich enzyme-linked immunoassay at three times: after anaesthesia induction (T0), at the end of peritoneal closure (T1), and 60 min after surgery (T2). The C-reactive protein (CRP) level and leukocyte count were measured on post-operative day 1. RESULTS: At time points T1 and T2, the IL-1ß, TNF-α, and IL-10 levels were lower in group D than in group S (P < 0.05). The CRP level and leukocyte count on post-operative day 1 were also lower in group D (P < 0.05), as were intraoperative MAP, HR, and amount of rescue analgesic administered after surgery. CONCLUSIONS: Dexmedetomidine administration during surgery reduced intraoperative and post-operative secretion of cytokines, as well as post-operative leukocyte count and CRP level.


Asunto(s)
Antiinflamatorios/farmacología , Proteína C-Reactiva/análisis , Colecistectomía Laparoscópica , Citocinas/sangre , Dexmedetomidina/farmacología , Adulto , Humanos , Interleucina-6/sangre , Persona de Mediana Edad , Factor de Necrosis Tumoral alfa/sangre
17.
J Dairy Sci ; 96(4): 1997-2002, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23462164

RESUMEN

The objective of this study was to determine the prevalence of Acinetobacter spp. in bulk tank milk (BTM) samples from different provinces of Korea and to analyze their antimicrobial susceptibility. Altogether, 2,287 BTM samples were investigated. Among them, Acinetobacter spp. were isolated from 176 BTM samples. Out of 176 Acinetobacter spp., 57 isolates were identified as Acinetobacter baumannii. None of the isolates were resistant to cefepime, imipenem, meropenem, ciprofloxacin, levofloxacin, or colistin. Resistance to amikacin, gentamicin, piperacillin, and cefotaxime was 2.3, 7.4, 2.3, and 4.0%, respectively. Acinetobacter spp. were least susceptible to tetracycline (17.6%), followed by trimethoprim-sulfamethoxazole (15.9%), ceftazidime (10.8%), and ampicillin-sulbactam (10.2%). Overall, A. baumannii strains were susceptible to most of the antimicrobial agents tested compared with other Acinetobacter spp. The Acinetobacter isolates showed 17 different patterns of antimicrobial resistance. The most frequent resistance profile observed was ampicillin-sulbactam (n=13), followed by tetracycline (n=9), ceftazidime-tetracycline (n=8), and trimethoprim-sulfamethoxazole-tetracycline (n=8). The results of this study confirmed that Acinetobacter, including A. baumannii strains, are present in BTM, which clearly showed the importance of examining BTM not only for foodborne pathogens but also for Acinetobacter spp., which could be of public health concern. To the best of our knowledge, this is the first report of Acinetobacter spp. in BTM samples from Korea.


Asunto(s)
Acinetobacter/efectos de los fármacos , Antiinfecciosos/farmacología , Leche/microbiología , Acinetobacter/aislamiento & purificación , Infecciones por Acinetobacter/transmisión , Acinetobacter baumannii/efectos de los fármacos , Acinetobacter baumannii/aislamiento & purificación , Animales , Farmacorresistencia Bacteriana , Enfermedades Transmitidas por los Alimentos , Pruebas de Sensibilidad Microbiana , República de Corea , Especificidad de la Especie
18.
Eur J Clin Nutr ; 74(5): 834-841, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-31685967

RESUMEN

BACKGROUND/OBJECTIVES: Although dietary calcium intake is associated with a risk of cardiovascular disease (CVD), it has not been studied extensively in Asian populations. We therefore investigated the association between dietary calcium intake and CVD among Korean adults and the effect of obesity on this association. SUBJECTS/METHODS: In total, 9186 participants were included in the analysis after excluding 844 with prevalent CVD/cancer or implausible energy intake. Nutrient intake, including dietary calcium, was estimated using a validated semi-quantitative food frequency questionnaire. CVD included myocardial infarction, coronary artery disease, and stroke per the World Health Organization criteria. Cox proportional hazards models were used to calculate multivariate-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs). RESULTS: In the fully adjusted model, HRs of CVD across increasing quintiles of dietary calcium intake were 1.0 (reference), 0.85 (95% CI: 0.66-1.10), 0.77 (95% CI: 0.58-1.02), 0.59 (95% CI: 0.42-0.83), and 0.72 (95% CI: 0.48-1.08); a significant linear trend was detected (p for trend = 0.04). However, this association varied according to the obesity status. High dietary calcium intake was associated with a reduced CVD risk among nonobese participants (body mass index [BMI] < 25 kg/m2; p for trend = 0.02), whereas this was not significant among obese participants (BMI ≥ 25 kg/m2; p for trend = 0.88). CONCLUSIONS: The association between dietary calcium intake and incident CVD may be influenced by obesity status. We provide evidence for developing dietary calcium intake guidelines for Koreans, allowing for the effects of obesity.


Asunto(s)
Calcio de la Dieta/administración & dosificación , Enfermedades Cardiovasculares/epidemiología , Dieta/estadística & datos numéricos , Adulto , Anciano , Enfermedades Cardiovasculares/dietoterapia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad/epidemiología , Modelos de Riesgos Proporcionales , República de Corea/epidemiología , Factores de Riesgo , Encuestas y Cuestionarios
19.
Polymers (Basel) ; 12(1)2020 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-31936860

RESUMEN

We consider semiflexible chains governed by preferred curvature and twist and their flexural and twist moduli. These filaments possess a helical rather than straight three-dimensional (3D) ground state and we call them helical filaments (H-filament). Depending on the moduli, the helical shape may be smeared by thermal fluctuations. Secondary superhelical structures are expected to form on top of the specific local structure of biofilaments, as is documented for vimentin. We study confinement and adsorption of helical filaments utilizing both a combination of numerical simulations and analytical theory. We investigate overall chain shapes, transverse chain fluctuations, loop and tail distributions, and energy distributions along the chain together with the mean square average height of the monomers 〈 z 2 〉 . The number fraction of adsorbed monomers serves as an order parameter for adsorption. Signatures of adsorbed helical polymers are the occurrence of 3D helical loops/tails and spiral or wavy quasi-flat shapes. None of these arise for the Worm-Like-Chain, whose straight ground state can be embedded in a plane.

20.
Transplant Proc ; 51(2): 568-574, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30879592

RESUMEN

BACKGROUND: Pericardial effusion is a common feature of end-stage liver disease. In this case report we describe the intraoperative management of recurrent pericardial effusion, without re-pericardiocentesis, to prevent circulatory collapse during a critical surgical time-point; that is, during manipulation of the major vessels and graft reperfusion. METHODS: A 47-year-old woman with hepatitis B was scheduled to undergo deceased donor liver transplantation (LT). A large pericardial effusion was preoperatively identified using transthoracic echocardiography (TTE). The patient also had paroxysmal atrial fibrillation. Two days before surgery, preemptive pericardiocentesis was performed and the 1150-mL effusion was drained. Intraoperatively, recurrence of the large pericardial effusion was identified using transesophageal echocardiography (TEE). During inferior vena cava manipulation, the surgeon consulted the anesthesiologist to evaluate the hemodynamic changes in the patient. After 3 attempts, the transplant team was able to determine the most appropriate anastomosis site, defined as that with the least impact on cardiac function. To prevent the development of severe postreperfusion syndrome, 10% MgSO4 (2 g) was gradually infused 20 minutes before portal vein declamping, and immediately before graft reperfusion a 100-µg bolus of epinephrine was administered. RESULTS: During graft reperfusion, there was no evidence of heart chamber collapse or flow disturbance, as seen on the TEE findings. Postoperatively, the patient recovered completely and was discharged from the hospital. Six months after surgery, there was no sign of pericardial effusion on follow-up TTE. CONCLUSION: Our intraoperative strategy may prevent cardiac collapse in patients with pericardial effusion detected during LT. Intraoperative TEE plays an important role in guiding hemodynamic management.


Asunto(s)
Fibrilación Atrial/complicaciones , Complicaciones Intraoperatorias/terapia , Trasplante de Hígado/efectos adversos , Trasplante de Hígado/métodos , Derrame Pericárdico/complicaciones , Ecocardiografía Transesofágica/métodos , Femenino , Humanos , Persona de Mediana Edad , Derrame Pericárdico/diagnóstico por imagen , Derrame Pericárdico/cirugía , Pericardiocentesis
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