A high percent of oxidative energy metabolism is needed to support brain growth during infancy. Unhealthy diets and limited nutrition, as well as other environmental insults, can compromise these essential developmental processes. In particular, iron deficiency anemia has been found to undermine both normal brain growth and neurobehavioral development. Even moderate ID may affect neural maturation because when iron is limited, it is prioritized first to red blood cells over the brain. A primate model was used to investigate the neural (...) effects of a transient ID and if deficits would persist after iron treatment. The large size and postnatal growth of the monkey brain makes the findings relevant to the metabolic and iron needs of human infants, and initiating treatment upon diagnosis of anemia reflects clinical practice. Specifically, this analysis determined whether brain maturation would still be compromised at 1 year of age if an anemic infant was treated promptly once diagnosed. The hematology and iron status of 41 infant rhesus monkeys was screened at 2-month intervals. Fifteen became ID; 12 met clinical criteria for anemia and were administered iron dextran and B vitamins for 1–2 months. MRI scans were acquired at 1 year. The volumetric and diffusion tensor imaging measures from the ID infants were compared with monkeys who remained continuously iron sufficient. A prior history of ID was associated with smaller total brain volumes, driven primarily by significantly less total gray matter and smaller GM volumes in several cortical regions. At the macrostructual level, the effect on white matter volumes was not as overt. However, DTI analyses of WM microstructure indicated two later-maturating anterior tracts were negatively affected. The findings reaffirm the importance of iron for normal brain development. Given that brain differences were still evident even after iron treatment and following recovery of iron-dependent hematological indices, the results highlight the importance of early detection and preemptive supplementation to limit the neural consequences of ID. (shrink)

The optimal design of cables under selfweight and concentrated loads is considered and the maximum feasible span for a given permissible stress is evaluated. All solutions are obtained in a closed analytical form.

The studies of urban popular culture in modern China in recent years have attracted wide attention from scholars in China and abroad. The symposium, which is composed by Ma Min’s “Injecting vitality into the studies of urban cultural history,” Jiang Jin’s “Issues in the studies of urban popular culture in modern China,” Wang Di’s “The microcosm of Chinese cities: The perspective and methodology of studying urban popular culture from the case of teahouses in Chengdu,” Joseph W. Esherick’s “Remaking the (...) Chinese city: Urban space and urban culture” and Lu Hanchao’s “From elites to common people: The downward trend in the studies of Chinese urban history in the United States,” provide valuable insights on the perspective, trend, and methodology of the studies. (shrink)

Recent magnetic resonance imaging and pathological studies have indicated that axonal loss is a major contributor to disease progression in multiple sclerosis. 1 H magnetic resonance spectroscopy, through measurement of N -acetyl aspartate, a neuronal marker, provides a unique tool to investigate this. Patients with primary progressive multiple sclerosis have few lesions on conventional MRI, suggesting that changes in normal appearing white matter, such as axonal loss, may be particularly relevant to disease progression in this group. To test this hypothesis (...) NAWM was studied with MRS, measuring the concentration of N -acetyl derived groups. Single-voxel MRS using a water-suppressed PRESS sequence was carried out in 24 patients with primary progressive multiple sclerosis and in 16 age-matched controls. Ratios of metabolite to creatine concentration were calculated in all subjects, and absolute concentrations were measured in 18 patients and all controls. NA/Cr was significantly lower in NAWM in patients than in controls, as was the absolute concentration of NA. There was no significant difference in the absolute concentration of creatine between the groups. This study supports the hypothesis that axonal loss occurs in NAWM in primary progressive multiple sclerosis and may well be a mechanism for disease progression in this group. (shrink)

Integrating power dependence and gender role theories, we investigate the interactive effects of followers’ gender and leaders’ Machiavellian orientation in predicting followers’ usage of upward influence tactics. Using a sample of 156 matched leader–follower dyads, we found that followers’ gender moderated the relationship between Time 1 leaders’ Machiavellian orientation and followers’ use of upward influence tactics at Time 2. Specifically, the relationship between Time 1 leaders’ Machiavellianism and Time 2 followers’ ingratiation was significant and positive for women followers and non-significant (...) for men followers, while the relationship between Time 1 leaders’ Machiavellianism and Time 2 followers’ assertiveness was significant and positive for men followers but non-significant for women followers. These results suggest that gender plays an important role in how followers react to Machiavellian leaders. The social and ethical implications of these findings are discussed. (shrink)

© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

Intervention studies with developmental samples are difficult to implement, in particular when targeting demographically diverse communities. Online studies have the potential to examine the efficacy of highly scalable interventions aimed at enhancing development, and to address some of the barriers faced by underrepresented communities for participating in developmental research. During the COVID-19 pandemic, we executed a fully remote randomized controlled trial language intervention with third and fourth grade students from diverse backgrounds across the United States. Using this as a case (...) study, we discuss both challenges and solutions to conducting an intensive online intervention through the various phases of the study, including recruitment, data collection, and fidelity of intervention implementation. We provide comprehensive suggestions and takeaways, and conclude by summarizing some important tradeoffs for researchers interested in carrying out such studies. (shrink)

Cyclin-dependent kinase 5 has been implicated in Alzheimer's disease pathogenesis. Here, we demonstrate that overexpression of p25, an activator of cdk5, led to increased levels of BACE1 mRNA and protein in vitro and in vivo. A p25/cdk5 responsive region containing multiple sites for signal transducer and activator of transcription was identified in the BACE1 promoter. STAT3 interacts with the BACE1 promoter, and p25-overexpressing mice had elevated levels of pSTAT3 and BACE1, whereas cdk5-deficient mice had reduced levels. Furthermore, mice with a (...) targeted mutation in the STAT3 cdk5 responsive site had lower levels of BACE1. Increased BACE levels in p25 overexpressing mice correlated with enhanced amyloidogenic processing that could be reversed by a cdk5 inhibitor. These data demonstrate a pathway by which p25/cdk5 increases the amyloidogenic processing of APP through STAT3-mediated transcriptional control of BACE1 that could have implications for AD pathogenesis. (shrink)

Confucianism and Catholicism are among the most influential religious traditions and share a long and intricate relationship. Beginning with the work of Matteo Ricci, the nature of this relationship has sometimes generated great debate, which is still alive today. The ten essays in this volume continue and advance this long conversation. Written by specialists in both traditions, the essays are organized into two groups. Those in the first group focus primarily on the historical and cultural contexts in which Confucianism and (...) Catholicism encountered one another in the four major Confucian cultures of East Asia. These essays seek to understand specific figures, texts, and issues in light of those broader contexts. The essays in the second part offer comparative and constructive studies of specific figures, texts, and issues in the Confucian and Catholic traditions from both theological and philosophical perspectives. By bringing these historical and constructive perspectives together, this volume seeks not only to understand the past dialogue between these traditions, but also to renew and reinvigorate the conversation between them today. In light of the unprecedented expansion of Eastern Asian influence in recent decades, and considering the myriad of challenges and new opportunities faced by both the Confucian and Catholic traditions in a world that is rapidly becoming globalized, this volume could not be more timely. Confucianism and Catholicism: Reinvigorating the Dialogue will be of interest to professional theologians, historians, and scholars of religion, as well as those who work in interreligious dialogue. Contributors: Michael R. Slater, Erin M. Cline, Philip J. Ivanhoe, Vincent Shen, Anh Q. Tran, S.J., Donald L. Baker, Kevin M. Doak, Xueying Wang, Richard Kim, Victoria S. Harrison, and Lee H. Yearley. (shrink)

This article discusses the practice and development of organ donation by capital prisoners in China. It analyzes the issue of informed consent regarding organ donation from capital prisoners in light of Confucian ethics and expounds the point that under the influence of Confucianism, China is a country that attaches great importance to the role of the family in practicing informed consent in various areas, the area of organ donation from capital prisoners included. It argues that a proper form of organ (...) donation from capital prisoners can be justified within the Confucian moral context in which the proper interests of capital prisoners and their families, the benefit of organ receptors, and a rightful order of society should all be appropriately considered. From the Confucian perspective, the act of donating organs from a capital prisoner must be decided by both the prisoner and his/her family (i.e., each side should hold a veto power), whereas such donation, in the proper circumstance protected by a rightful procedure, should be appreciated as a morally praiseworthy act of the prisoner who is willing to make the final effort to repent and correct his/her evil conduct and to leave something good to the world. (shrink)

Disorders of Consciousness (DoCs) raise difficult and complex questions about the value of life for persons with impaired consciousness, the rights of persons unable to make medical decisions, and our social, medical, and ethical obligations to patients whose personhood has frequently been challenged and neglected. Recent neuroscientific discoveries have led to enhanced understanding of the heterogeneity of these disorders, and focused renewed attention on the medical and ethical problem of misdiagnosis. -/- This book examines the entanglement of epistemic and ethical (...) uncertainty in DoCs and other medical contexts, and how they interact to create both epistemic and ethical risks. Philosopher and bioethicist L. Syd M Johnson pulls together multiple threads in this work: the ontological mysteries of consciousness, medical uncertainty about unconsciousness, ableist bias, withdrawal of treatment in neurointensive care, and the rarely questioned view that consciousness is essential to personhood and moral status. Johnson challenges longstanding bioethical dogmas about DoC patients, and argues for an ethics of uncertainty for contexts where there is a need for decisive action in the presence of unavoidable uncertainty. The ethics of uncertainty refocuses ethical inquiry concerning persons with DoCs, placing less emphasis on their contested personhood, and more on inductive risk and uncertainty, on respect for autonomy, and especially on epistemic justice. With applications to various decisional contexts where uncertainty and ethical risk interact, this ethical approach enables surrogate decision makers facing fraught and risky choices to fulfill their obligations as moral and epistemic agents. (shrink)

Adenosine transport in cultured human umbilical vein endothelial cells (HUVEC) was characterized and shown to be mediated by a single facilitated diffusion mechanism. Initial rates of adenosine influx at 22 degrees C were saturable [apparent Michaelis constant, 69 +/- 10 mu M; maximum velocity (V-max), 600 +/- 70 pmol.10(6) cells(-1).s(-1)] and inhibited by nitrobenzylthioinosine (NBMPR). Formycin B had an unusually high affinity [inhibitory constant K-i), 18 +/- 4.3 mu M], whereas inosine had a low affinity (K-i, 440 +/- 68 mu (...) M) and nucleobases were without effect on adenosine influx. The number of transporters (1.2 x 10(6) sites/cell) was estimated by NBMPR equilibrium binding (apparent dissociation constant, 0.11 +/- 0.01 nM; maximum binding, 2.0 +/- 0.15 pmol/10(6) cells). In addition, we compared these endothelial cells with those obtained from cords from pregnancies complicated by diabetes (HUVEC-D), since embriopathy may occur in these conditions. HUVEC-D exhibited a 2.3-fold reduction in both the V-max for adenosine influx and the maximum number of NBMPR binding sites (260 +/- 40 pmol.10(6) cells(-1).s(-1) and 0.86 +/- 0.08 pmol/10(6) cells, respectively). However, the turnover number for each nucleoside transporter in normal and diabetic HUVEC was similar (approximate to 300 adenosine molecules/s). Adenosine metabolism at 10 mu M in HUVEC-D was modified compared with normal cells. Intracellular phosphorylation (> 90%) was the predominant pathway in normal HUVEC, whereas in HUVEC-D, substantial levels of adenine and adenosine were detected. The present results demonstrate therefore the downregulation of the NBMPR-sensitive nucleoside transporter and changes in adenosine metabolism in HUVEC from diabetic pregnancies. (shrink)

The last line should, I believe, be printed as a question. Strepsides is seated on the sacred and a wreath is put on his head, which makes him feel like a sacrificial victim. In 261 he is told to hold still, and we gather from that at this point he is being sprinkled with some dry substance. If we put the full stop at the end, he is saying, ‘I can see you won't disappoint me: being sprinkled like this will (...) make me into flour all right’. If we make it a question, it is ‘No fear, you won't trick me: you mean being sprinkled is the way to turn into flour?’ This seems more in keeping with his apprehension in 257, and it allows what is perhaps a more natural sense to. (shrink)

Le but de cet article est une critique de la philosophie politique de M. Eric Weil. Par opposition à M. Weil, l'auteur définit la „politique" ici comme l'art du réalisable, à préciser comme : l'art d'arriver à court terme à une organisation de la société qu'on estime meilleure, et cela en employant tous les moyens permis. L'homme politique n'est pas, ainsi que l'affirme M. Weil, un „saint de Vtmiversel”, qui, en ce qui concerne l'emploi de la violence, se trouve au-dessus (...) de la loi. Ce „politicien-éducateur” est en vérité l'appui des régimes totalitaires et est d'ailleurs inconcevable en dehors de ceux-ci. En outre la théorie de M. Weil contient un certain nombre de contradictions internes et, si on la mesure à la pratique, elle se trouve être déficiente à beaucoup d'égards. Contre la conception platonicienne de M. Weil l'auteur défend la thèse que la politique n'est pas une infraction, regrettable mais inévitable, à „la morale”. C'est la tâche de l'homme politique de supprimer toutes les absurdités, inconséquences et injustices qui entachent les structures de la société. Ce qui, concrètement, est absurde, inconséquent ou injuste n'est pas déterminé par „la morale”, mais par la conscience du droit et par le sentiment moral d'une époque donnée. Les „certitudes” d'où part l'homme politique ne sont pas des Idées platoniciennes, mais des hypothèses de travail, qui dérivent leur contenu non pas de la contemplation des Idées, mais d'une notion de ce qui est juste et désirable, notion qui est déterminée par les conditions matérielles et spirituelles et qui se trouve dans un changement continuel. (shrink)