TiBaCaCuO high temperature superconducting bolometer

Meanders of thin films of TlBa₂Ca₂CuO₂ have been used to make radiation bolometers. Using cw-HeNe at 632 nm the peak responsivity of these films is measured to be 0.560 V/W at the temperature of 106.0 K. The present experimental data agree well with bolometric response of irradiated films, and the calculations are presented to support this conclusion.     

YBa2Cu3O7-δ颗粒Josephson结的特性

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　Ｓｕｐｅｒｃｏｎｄｕｃｔｉｎｇｗｅａｋｌｉｎｋｓａｒｅｖｅｒｙｉｎｔｒｉｇｕｉｎｇ ,ｄｕｅｔｏｔｈｅｆａｃｔｔｈａｔｔｈｅｓｅｒｅｌａｔｉｖｅｓｉｍｐｌｅｓｔｒｕｃｔｕｒｅｓｓｈｏｗＪｏｓｅｐｈｓｏｎｅｆｆｅｃｔ[1] .Ｉｎｔｈｅｏｒｙ ,ｏｎｌｙｔｈｅｓｔｒｕｃｔｕｒｅｓｔｈａｔｈａｖｅｄｉｍｅｎｓｉｏｎｓｃｏｍｐａｒａｂｌｅｗｉｔｈｔｈｅｃｏｈｅｒｅｎｃｅｌｅｎｇｔｈζａｒｅｅｘｐｅｃｔｅｄｔｏｓｈｏｗｔｒｕｅＪｏｓｅｐｈｓｏｎｂｅｈａｖｉｏｒ[2 ,3] .Ｉｎｐｒａｃｔｉ…     

Academic hardiness as a mediator for the relationship between school belonging and academic stress

Academic stress is a commonly reported affective state by high school students that can be accompanied by unwanted and unhelpful short- and long-term implications including a low sense of school belonging. Understanding how academic stress may be alleviated or managed by students is an essential consideration for all schools concerned with student well-being. This study aimed to examine the relationship between academic stress and sense of school belonging, as well as the mediation effect of academic hardiness. Four hundred and five high school students from six schools in Tehran (Iran) were recruited in the study. Data analyses with Structural Equation Modeling revealed that a sense of belonging to school (β = −.38, p < .01) and academic hardiness (β = −.40, p < .01) were significant predictors of academic stress. Bootstrapping analysis showed that academic hardiness acted as a mediator between a sense of belonging to school and academic stress. The findings elucidate the underlying mechanism in how low school belonging may lead to academic stress in high school students. Creating a culture of school belonging and teaching and supporting skills related to academic hardiness should be key considerations for all schools seeking to reduce academic stress experienced by their students.     

Construction of nanocarriers based on nucleic acids and their applications in nanobiology delivery systemsOA

In recent years,nanocarriers based on nucleic acids have emerged as powerful and novel nanocarriers that are able to meet the demand for cancer-cell-specific targeting.Functional dynamics analysis revealed good bio compatibility,low toxicity and programmable structures,and their advantages include controllable size and modifiability.The development of novel hybrids has focused on the distinct roles of biosensing,drug and gene delivery,vaccine transport,photosensitization,counteracting drug resis...     

Golden ratio

Our attraction to another body increases if the body is symmetrical and in proportion. If a face or a structure is in proportion, we are more likely to notice it and find it beautiful. The universal ratio of beauty is the ‘Golden Ratio’, found in many structures. This ratio comes from Fibonacci numbers. In this article, we explore this concept along with its applications.     

Unique Correlation Between Mutated Citrullinated Vimentine IgG Autoantibodies and Markers of Systemic Inflammation in Rheumatoid Arthritis Patients

Rheumatoid arthritis (RA) is the most common inflammatory systemic autoimmune disease, primarily affecting the peripheral joints. Anti-mutated citrullinated vimentin autoantibodies (anti-MCV) of IgG isotype were shown to be a useful diagnostic marker of RA especially in RA patients who were anti-cyclic citrullinated protein autoantibodies (anti-CCP) negative. Nevertheless, published data correlates rheumatoid factor (RF), anti-CCP or anti-MCV antibodies with either erythrocyte sedimentation rate (ESR) or serum C-reactive protein (CRP) as markers of disease activity, not investigated the possible correlations of RA autoantibodies towards ESR and CRP in comparison. Herein, we aim to evaluate the usefulness of anti-MCV as a dependable marker in established RA compared with anti-CCP and RF antibodies and to examine correlations between RF, anti-CCP and anti-MCV antibodies towards ESR and serum CRP. Serum RF-IgA, RF-IgM, anti-CCP and anti-MCV levels were measured in 30 patients with RA and 40 patients with other autoimmune diseases (non-RA) compared with 20 normal subjects. Specificity, sensitivity and AUC for RF antibodies, anti-CCP and anti-MCV were calculated towards RA diagnosis. Our results showed that ESR and CRP had significantly higher values in both RA and non-RA patients compared with our healthy controls with observed significant increment in RA patients compared with non-RA patients. An important finding from our study is that 33.3 % of RA patients were anti-CCP negative but being positive towards anti-MCV. Also, in-between 36.7 up to 40 % of RA patients were RF-IgA and RF-IgM negative while being anti-MCV positive. Anti-MCV antibodies showed the highest specificity and sensitivity (97.5 and 86.6 %, respectively) towards RA diagnosis with the highest AUC value (0.920) compared with anti-CCP and RF antibodies. Correlation analyses revealed that there was no significant correlation between ESR along with CRP towards RF-IgA, RF-IgM and anti-CCP while profound highly significant correlation exhibited between ESR and CRP towards anti-MCV data (r = 0.879 and 0.994, respectively). Thus, our data suggest that the assessment of serum anti-MCV autoantibodies along with ESR and CRP considered as a simple laboratory regime for monitoring RA patients to assess and follow-up disease activity. The addition of anti-MCV autoantibodies to serologic markers in the ACR/EULAR classification criteria for RA will add points for patients with negative anti-CCP and RF antibodies.     

The Impact of Religio-cultural Norms and Values on the Education of Young South Asian Women

This paper is a discussion of how the educational attitudes, perspectives and experiences of young South Asian women in schools and colleges in the city of Birmingham, UK, are affected by domestic religio-cultural norms and values. Taking into consideration social class and the different types of schools they attend, young South Asian women were interviewed and surveyed to ascertain the effects of religion and culture upon education. The empirical findings show that all young South Asian women had supportive parents who actively encouraged them in education, irrespective of religion. For young Muslim women a strong bond between religion and individual was found, but for Hindus and Sikhs it was more tentative. For young working-class South Asian women, Hindus and Sikhs also regarded religion as less significant in their lives, but for Muslims it was again seen as crucial--but certain practices were argued to be more cultural than religious, and thereby problematic. For some young South Asian Muslim women, it leads to further marginalisation in education, given that they also originate from lower social class positions.