A study of performance in chemistry among lower secondary government schools in Zanzibar

Performance in chemistry of form two national examinations among lower secondary government schools in Zanzibar have not been encouraging for couples of subsequent years as from 2009 to date despite several attempts made through additional carefully planned instructional strategies and models to improve the status of teaching and learning chemistry. A total of 31government schools from Unguja regions of Zanzibar Island were sampled. The form two classes of these schools have an average of 48 students with quite a fraction has two streams. This commensurate well with the country’s growing population. The Performance data gotten from the Ministry of Education and Vocational training Zanzibar reveals that the average mean score of this compulsory subject in this grade since then until is 30.16 with a mean standard deviation of 2.1995 while those who passed the chemistry subject are 30 ± 10 %. The percentage pass is set at 35 %. Basing on the average test score data and performance analysis, a large significant number of students fails in the subject and this has been persistent. From this study, enhancement of teachers’ effectiveness, improved economies of education and fewer schools to be set aside for science studies is indeed appreciated. This study recommends the heuristic approach as “modus oparandi” of teaching intertwined with instructional objectives to bring learners into meaningful learning and effective understanding guided by the four domains of Bloom’s taxonomy with more motivational orientation and innovations

Intake of Arsenic and Selenium in a Bangladeshi population investigated using Inductively Coupled Plasma Mass Spectrometry

The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.Millions of people in Bangladesh are exposed to high concentration of the toxic element arsenic (As) through drinking water and consumption of foods. It has also been reported that Bangladeshis have a low intake of the essential element selenium (Se), which is known to be important as an antioxidant and has been suggested to counteract the toxicity of As. We report here on total intake of As and Se in a Bangladeshi population, based on inductively coupled plasma mass spectrometric (ICP-MS) analysis of a range of Bangladeshi foods. The total daily intake of As and Se from foods was estimated to be 74.2 and 87.7 µg/day, respectively. If As from water, used for drinking and cooking rice, is included the TDI increases to 385 µg of total As per day. An important finding of our study, contrary to suggestions given in other reports, is that the Bangladeshi diet does not appear to be deficient in Se and this may explain why the blood Se concentrations in Bangladeshis is similar to the USA population. This requires further investigation and detailed dietary and human biomonitoring studies on the Bangladeshi population should be conducted. Rice and fish were the main sources of dietary As and Se for Bangladeshis. Leafy vegetables could also be a significant contributor of high concentration of As in the Bangladeshi diet. The flesh and eggs of Hilsha (Tenualosa ilisha) species of fish were found to contain particularly high levels of total arsenic (range 0.77 - 6.15 mg/kg) although this is likely to be dominated by the non-toxic organoarsenic species

Murine and related chapparvoviruses are nephro-tropic and produce novel accessory proteins in infected kidneys.

Mouse kidney parvovirus (MKPV) is a member of the provisional genus Chapparvovirus that causes renal disease in immune-compromised mice, with a disease course reminiscent of polyomavirus-associated nephropathy in immune-suppressed kidney transplant patients. Here we map four major MKPV transcripts, created by alternative splicing, to a common initiator region, and use mass spectrometry to identify "p10" and "p15" as novel chapparvovirus accessory proteins produced in MKPV-infected kidneys. p15 and the splicing-dependent putative accessory protein NS2 are conserved in all near-complete amniote chapparvovirus genomes currently available (from mammals, birds and a reptile). In contrast, p10 may be encoded only by viruses with >60% amino acid identity to MKPV. We show that MKPV is kidney-tropic and that the bat chapparvovirus DrPV-1 and a non-human primate chapparvovirus, CKPV, are also found in the kidneys of their hosts. We propose, therefore, that many mammal chapparvoviruses are likely to be nephrotropic

Rethinking justice beyond human rights. Anti-colonialism and intersectionality in the politics of the Palestinian Youth Movement

This article discusses the politics of the Palestinian Youth Movement (PYM) – a contemporary social movement operating across a number of Arab and western countries. Unlike analysis on the Arab Uprisings which focused on the national dimension of youth activism, we explore how the PYM politics fosters and upholds an explicitly transnational anti-colonial and intersectional solidarity framework, which foregrounds a radical critique of conventional notions of self-determination based on state-framed human rights discourses and international law paradigms. The struggle becomes instead framed as an issue of justice, freedom and liberation from interlocking forms and hierarchies of oppression. KEYWORDS: Palestine, transnational social movements, intersectionality, human rights, anti-colonialis

СОПОСТАВИТЕЛЬНЫЙ АНАЛИЗ АНСЦЕНТНОГО И РАСШИРЕННОГО ФИЛЬТРОВ КАЛМАНА ПРИ ВТОРИЧНОЙ ОБРАБОТКЕ ИНФОРМАЦИИ В СПУТНИКОВЫХ РАДИОНАВИГАЦИОННЫХ СИСТЕМАХ

The features of extended and unscented Kalman filters for global positioning systems receiver data processing are considered. The estimation performance of extended and unscented Kalman filters is compared.Рассмотрены особенности построения расширенного и ансцентного фильтров Калмана при вторичной обработке информации в спутниковых радионавигационных системах. Для рассматриваемых алгоритмов фильтрации проведен сравнительный анализ качества навигационно-временных определений параметров траекторий воздушного объекта

Towards a national trauma registry for the United Arab Emirates

<p>Abstract</p> <p>Background</p> <p>Trauma is a major health problem in the United Arab Emirates (UAE) as well as worldwide. Trauma registries provide large longitudinal databases for analysis and policy improvement. We aim in this paper to report on the development and evolution of a national trauma registry using a staged approach by developing a single-center registry, a two-center registry, and then a multi-center registry. The three registries were established by developing suitable data collection forms, databases, and interfaces to these databases. The first two registries collected data for a finite period of time and the third is underway. The steps taken to establish these registries depend on whether the registry is intended as a single-center or multi-center registry.</p> <p>Findings</p> <p>Several issues arose and were resolved during the development of these registries such as the relational design of the database, whether to use a standalone database management system or a web-based system, and the usability and security of the system. The inclusion of preventive medicine data elements is important in a trauma registry and the focus on road traffic collision data elements is essential in a country such as the UAE. The first two registries provided valuable data which has been analyzed and published.</p> <p>Conclusions</p> <p>The main factors leading to the successful establishment of a multi-center trauma registry are the development of a concise data entry form, development of a user-friendly secure web-based database system, the availability of a computer and Internet connection in each data collection center, funded data entry personnel well trained in extracting medical data from the medical record and entering it into the computer, and experienced personnel in trauma injuries and data analysis to continuously maintain and analyze the registry.</p

Making sense of Arab labor markets: the enduring legacy of dualism

It is well-established that Arab labor markets share certain common characteristics, including an oversized public sector, high unemployment for educated youth, weak private sector dependent on government welfare for their survival, rapid growth in educational attainment, but much of it focused on the pursuit of formal credentials rather than productive skills, and low and stagnant female labor force participation rates. I argue in this paper that all of these features can be explained by the deep and persistent dualism that characterizes Arab labor markets as a result of the use of labor markets by Arab regimes as tool of political appeasement in the context of the authoritarian bargain social contract that they have struck with their citizens in the post-independence period. Even as fiscal crises have long destabilized these arrangements in most non-oil Arab countries, culminating in the dramatic political upheavals of the Arab spring revolutions, the enduring legacy of dualism will continue to strongly shape the production and deployment of human capital in Arab economies for some time. This will undoubtedly pose serious challenges to any efforts to transform these economies into dynamic, rapidly growing and more equitable globally competitive economies

MKPV (aka MuCPV) and related chapparvoviruses are nephro-tropic and encode novel accessory proteins p15 and NS2

Abstract Mouse kidney parvovirus (MKPV) is a member of the provisional Chapparvovirus genus that causes renal disease in immune-compromised mice, with a disease course reminiscent of polyomavirus-associated nephropathy in immune-suppressed kidney transplant patients. Here we map four MKPV transcripts, created by alternative splicing, to a common transcription initiation region, and use mass spectrometry to identify “p10” and “p15” as novel chapparvovirus accessory proteins produced in MKPV-infected kidneys. p15 and a splicing-dependent putative accessory protein NS2 are conserved in all near-complete tetrapod chapparvovirus genomes currently available (from mammals, birds and a reptile). In contrast, p10 may be encoded only by viruses with >60% amino acid identity to MKPV. We show that MKPV is kidney-tropic and that the bat chapparvovirus DrPV-1 and a non-human primate chapparvovirus, CKPV, are also found in the kidneys of their hosts. We propose, therefore, that chapparvoviruses with >60% VP1 amino acid identity to MKPV be classified into a genus dubbed Nephroparvovirus , which is consistent with nomenclature for the genus Erythroparvovirus

Air quality and urban sustainable development: the application of machine learning tools

[EN] Air quality has an efect on a population¿s quality of life. As a dimension of sustainable urban development, governments have been concerned about this indicator. This is refected in the references consulted that have demonstrated progress in forecasting pollution events to issue early warnings using conventional tools which, as a result of the new era of big data, are becoming obsolete. There are a limited number of studies with applications of machine learning tools to characterize and forecast behavior of the environmental, social and economic dimensions of sustainable development as they pertain to air quality. This article presents an analysis of studies that developed machine learning models to forecast sustainable development and air quality. 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