The Discussion of the Character of Santiago in“The Old Man and The Sea”

"The Old Man and The Sea"is Hemingway latter years’masterpiece,with which he was awarded the Nobel prize in1954.As the protagonist of the novel,Santiago plays a vital role to the novel’s motif.Hemingway expresses his attitudes toward the life through the image of Santiago.The paper intends to explore the character of Santiago from different facets and angles.In the end,we reach a conclusion that Santiago is a strong-willed man with a young,indestructible soul,he is kind,sensitive as well as hardworking.In a ward,he is a perfect Hemingway hero.     

Sex Dimorphism in Serum Lecithin: Cholesterol Acyltransferase and Lipoprotein Lipase Activities in Adult Sickle Cell Anaemia Patients with Proteinuria

Proteinuria in subjects with sickle cell anaemia (SCA) is an indication of an ongoing renal insufficiency and it’s prevalence varies between sexes. We evaluated sex differences in the activities of Lecithin: cholesterol acyltransferase (LCAT), Lipoprotein lipase (LPL) and the levels of lipoproteins in SCA patients with proteinuria. Fifty SCA patients (30 males aged: 26.4 ± 7.3 years and 20 females, aged 25.4 ± 2.6 years) and 50 age and sex matched control SCA patients were recruited for the study. Random urine specimens were collected and tested for the presence of albumin by urine dipstick technique. A 24 h urinary protein was quantitated using sulphosalicylic acid technique. Fasting serum total cholesterol, triglyceride, urea and creatinine were determined using enzymes catalyzed colorimetric methods. HDL cholesterol was determined in the supernatant after precipitation with manganese chloride–phosphotungstic acid solution. LCAT was measured using the Anasolv LCAT assay with proteoliposome as substrate. LPL was determined by incubating the serum in glyceryl trioleate substrate, the glycerol liberated was measured in an aliquot of the incubating mixture. In male SCA controls there was 18.2 and 6.9% increase in the activities of LPL and LCAT respectively when compared with females but in SCA patients with proteinuria there was 8.4 and 5.2% decreases in the male SCA patients compared with females. The concentration of 24 h urine protein in the SCA male subjects with proteinuria was significantly higher (0.25 g/day; P < 0.001) compared with the SCA female patients with proteinuria (0.09 g/day). There are sex differences in the activities of LCAT and LPL in SCA patients with proteinuria. Metabolism of these lipolytic enzymes may be modulated differently in SCA patients with proteinuria.     

The role of sport as a social status determinant for children: thirty years later

The purpose of this study was to examine the role of sport as a social status determinant among racially diverse children. Participants were 1,233 fourth- to seventh-grade children. Results indicated there were gender, grade, and racial differences for the selection of social status determinants. Boys placed more importance than girls on being good at sports and wealth. Girls placed more importance than boys on getting good grades and being attractive. Fourth- and fifth-grade students ranked getting good grades as most important, while sixth- and seventh-grade students ranked being attractive as most important. Non-Hispanic Caucasian students ranked being good at sports and being attractive as most important, while African American students ranked getting good grades and wealth as most important     

生物多样性与人类资源

所有生物,包括人类,都需要同样的基本资源赖以生存。通过对控制生物多样性自然过程的了解,可以最大程度地缓解人类利用这些资源与保护生物多样性的潜在矛盾和冲突。保护地球上某些物种可能不需占用农业生产用地,而保护另一些物种却需要某种形式的经济支持,以协调人类需要与物种保护之间的关系。     

Emotion and cognition: an intricately bound developmental process

Regulatory aspects of development can best be understood by research that conceptualizes relations between cognition and emotion. The neural mechanisms associated with regulatory processes may be the same as those associated with higher order cognitive processes. Thus, from a developmental cognitive neuroscience perspective, emotion and cognition are dynamically linked and work together to process information and execute action. This article highlights the authors' recent efforts at integrating emotion regulation and cognitive processing during the first year of life by focusing on the methodological criteria outlined by Cole, Martin, and Dennis (this issue), and it discusses the idea that emotion and cognition are an intricately bound developmental process.     

Visual-proprioceptive intermodal perception using point light displays

Three experiments explored 5- and 7-month-old infants' intermodal coordination of proprioceptive information produced by leg movements, and visual movement information specifying these same motions. The visual information took the form of point light information for leg and feet movements, with visual displays presented in upright, ego-centered on-joint (Experiment 1, N = 48); upright, ego-centered off-joint (Experiment 2, N = 48); and inverted, observer-centered off-joint (Experiment 3, N = 48) orientations. Measures of preferential looking indicated intermodal perception in infants of both ages while seeing on-joint, ego-centered orientations, and for 7-month-olds (and possibly 5-month-olds) while seeing off-joint, ego-centered displays; neither age group demonstrated intermodal perception for off-joint, observer-centered displays. These results suggest that coordination of visual and proprioceptive inputs is constrained by infants' information processing of the displays, and have implications for infants' growing understanding of their self-movement and the development of knowledge of the self.     

Science and schooling for students with LD: a discussion of the symposium

In this summative discussion, we respond to Crockett's proposals about supporting science in the schoolhouse, and we summarize and reflect on the perspectives of the commentators. Overall, they identify discussion points in issues of science in schooling, implementation of scientific practices, teacher training and professional development, and issues in educational administration and leadership. We agree with Crockett and the commentators that intensive efforts in all these areas must be made to strengthen the role of science in the schoolhouse.