Assessment of remediation Potentials of maize (Zea mays) on sites co-contaminated with Pb and antracene

Phytoremediation is a promising technology for the remediation of sites co-contaminated with inorganic and organic pollutants. A pot experiment was conducted to evaluate the remediation potential of Z.mays in soil co- contaminated with Pb and antracene. Pristine sandy loam soils were polluted with Pb chloride salt and antracene at three different levels (50mg/kg of Pb, 100mg/kg of Pb, and 100mg/kg of Pb+100mg/kg of antracene) and laid out in completely randomized design with 3 replicates. Shoot dry matter weight was significantly reduced (p≤0.05) when compared with control treatments by 40% when exposed to100mg kg-1 of Pb. There was a 48% inhibition of shoot dry matter of Z.mays relative to control treatments when 100 mg Pb kg-1 was mixed with 100 mgkg-1 antracene. Root and shoot metal concentration in Zea mays increased with increasing concentration of Pb. The average Translocation Factor (TF < 1 (0.69) obtained suggests that Zea mays predominantly retains Pb in the root portion of the plant. There was a 5% increase in shoot Pb concentration when soil was contaminated with Pb and antracene. The extractable antracene decreased significantly (p≤0.05) in soil planted with Z.mays as well as in pots without maize plant. This accounted for 65 and 72% of antracene dissipation in planted soil and 40-46% dissipation in unplanted soil. This result suggested that Zeamays is a promising candidate for uptake Pb and dissipation of antracene in co-contaminated soils

The prevalence of ectopic pregnancy in Jos, North Central Nigeria: a reproductive health challenge

Background: Ectopic pregnancy is a life threatening gynecological emergency with a rising incidence of maternal morbidity especially in resource poor settings. Most cases present in the emergency unit when ruptured.Objective: The objective of this study was to determine the prevalence, identifiable risk factors, clinical presentation and management outcome of ectopic pregnancy.Method: This was a retrospective review of cases of ectopic pregnancies seen and managed in the gynecological unit of Plateau State Specialist Hospital (PSSH) Jos from 1st September 2012 to 31st August, 2017. The medical records of the patients managed for ectopic pregnancy as well as the delivery register from the labor room, theater register and gynecological admissions during the study period were retrieved. The data were collected with the aid of data entry form designed for this purpose. The relevant data collected were analyzed using epi info 16 version and presented in tables.Results: During the period, a total number of 13,596 deliveries were recorded while there were 2067 gynecological admissions. One hundred and seventy two (172) patients had ectopic pregnancies accounting for 1.27% of all deliveries and 8.3% of gynecological admissions. The mean age of the patients was 29±5years. The peak age group was 20-25 years (32.0%); 92(53.5%) had secondary school as their highest level of education; 135(78.5%) were married and 49(28.4%) were multigravida. All the patients; 172(100%) presented with a history of abdominal pain while 8(4.7%) presented in shock. A total of 161(93.6%) were diagnosed based on history and clinical examination findings; 152(88.4%) had trans-abdominal scan and 12(7.0%) had abdominal paracentesis (though frowned at in modern day practice). The commonest identifiable risk factors for ectopic pregnancies were pelvic inflammatory disease(PID) in 111(64.5%) of patients followed by previous history of abortions in 17(9.9%) of patients. A total number of 169(98.3%) of the patients had total salpingectomy for ruptured ectopic pregnancies via open abdominal surgeries with 87(50.6%) done on the right fallopian tubes. Three (1.7%) of the patients had oophorectomy. Eighty one(47.1%) of the patients had blood transfusion with no case fatality.Conclusion: Ectopic pregnancy still remains a major health challenge among women of reproductive age group in Nigeria. Efforts should therefore be directed at prompt and timely management to reduce maternal morbidity and mortality in developing countries, availability and accessibility of contraceptive methods, accessibility to healthcare centers and affordable healthcare, proper treatment of PID, use of better technologies in management of cases and human capacity development.Keywords: Prevalence, reproductive age group, ectopic pregnancy, resource poor settings, life threatening, emergenc

US Cosmic Visions: New Ideas in Dark Matter 2017: Community Report

This white paper summarizes the workshop "U.S. Cosmic Visions: New Ideas in Dark Matter" held at University of Maryland on March 23-25, 2017.Comment: 102 pages + reference

Why Are Outcomes Different for Registry Patients Enrolled Prospectively and Retrospectively? Insights from the Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF).

Background: Retrospective and prospective observational studies are designed to reflect real-world evidence on clinical practice, but can yield conflicting results. The GARFIELD-AF Registry includes both methods of enrolment and allows analysis of differences in patient characteristics and outcomes that may result. Methods and Results: Patients with atrial fibrillation (AF) and ≥1 risk factor for stroke at diagnosis of AF were recruited either retrospectively (n = 5069) or prospectively (n = 5501) from 19 countries and then followed prospectively. The retrospectively enrolled cohort comprised patients with established AF (for a least 6, and up to 24 months before enrolment), who were identified retrospectively (and baseline and partial follow-up data were collected from the emedical records) and then followed prospectively between 0-18 months (such that the total time of follow-up was 24 months; data collection Dec-2009 and Oct-2010). In the prospectively enrolled cohort, patients with newly diagnosed AF (≤6 weeks after diagnosis) were recruited between Mar-2010 and Oct-2011 and were followed for 24 months after enrolment. Differences between the cohorts were observed in clinical characteristics, including type of AF, stroke prevention strategies, and event rates. More patients in the retrospectively identified cohort received vitamin K antagonists (62.1% vs. 53.2%) and fewer received non-vitamin K oral anticoagulants (1.8% vs . 4.2%). All-cause mortality rates per 100 person-years during the prospective follow-up (starting the first study visit up to 1 year) were significantly lower in the retrospective than prospectively identified cohort (3.04 [95% CI 2.51 to 3.67] vs . 4.05 [95% CI 3.53 to 4.63]; p = 0.016). Conclusions: Interpretations of data from registries that aim to evaluate the characteristics and outcomes of patients with AF must take account of differences in registry design and the impact of recall bias and survivorship bias that is incurred with retrospective enrolment. Clinical Trial Registration: - URL: http://www.clinicaltrials.gov . Unique identifier for GARFIELD-AF (NCT01090362)

Improved risk stratification of patients with atrial fibrillation: an integrated GARFIELD-AF tool for the prediction of mortality, stroke and bleed in patients with and without anticoagulation.

OBJECTIVES: To provide an accurate, web-based tool for stratifying patients with atrial fibrillation to facilitate decisions on the potential benefits/risks of anticoagulation, based on mortality, stroke and bleeding risks. DESIGN: The new tool was developed, using stepwise regression, for all and then applied to lower risk patients. C-statistics were compared with CHA2DS2-VASc using 30-fold cross-validation to control for overfitting. External validation was undertaken in an independent dataset, Outcome Registry for Better Informed Treatment of Atrial Fibrillation (ORBIT-AF). PARTICIPANTS: Data from 39 898 patients enrolled in the prospective GARFIELD-AF registry provided the basis for deriving and validating an integrated risk tool to predict stroke risk, mortality and bleeding risk. RESULTS: The discriminatory value of the GARFIELD-AF risk model was superior to CHA2DS2-VASc for patients with or without anticoagulation. C-statistics (95% CI) for all-cause mortality, ischaemic stroke/systemic embolism and haemorrhagic stroke/major bleeding (treated patients) were: 0.77 (0.76 to 0.78), 0.69 (0.67 to 0.71) and 0.66 (0.62 to 0.69), respectively, for the GARFIELD-AF risk models, and 0.66 (0.64-0.67), 0.64 (0.61-0.66) and 0.64 (0.61-0.68), respectively, for CHA2DS2-VASc (or HAS-BLED for bleeding). In very low to low risk patients (CHA2DS2-VASc 0 or 1 (men) and 1 or 2 (women)), the CHA2DS2-VASc and HAS-BLED (for bleeding) scores offered weak discriminatory value for mortality, stroke/systemic embolism and major bleeding. C-statistics for the GARFIELD-AF risk tool were 0.69 (0.64 to 0.75), 0.65 (0.56 to 0.73) and 0.60 (0.47 to 0.73) for each end point, respectively, versus 0.50 (0.45 to 0.55), 0.59 (0.50 to 0.67) and 0.55 (0.53 to 0.56) for CHA2DS2-VASc (or HAS-BLED for bleeding). Upon validation in the ORBIT-AF population, C-statistics showed that the GARFIELD-AF risk tool was effective for predicting 1-year all-cause mortality using the full and simplified model for all-cause mortality: C-statistics 0.75 (0.73 to 0.77) and 0.75 (0.73 to 0.77), respectively, and for predicting for any stroke or systemic embolism over 1 year, C-statistics 0.68 (0.62 to 0.74). CONCLUSIONS: Performance of the GARFIELD-AF risk tool was superior to CHA2DS2-VASc in predicting stroke and mortality and superior to HAS-BLED for bleeding, overall and in lower risk patients. The GARFIELD-AF tool has the potential for incorporation in routine electronic systems, and for the first time, permits simultaneous evaluation of ischaemic stroke, mortality and bleeding risks. CLINICAL TRIAL REGISTRATION: URL: http://www.clinicaltrials.gov. Unique identifier for GARFIELD-AF (NCT01090362) and for ORBIT-AF (NCT01165710)

Two-year outcomes of patients with newly diagnosed atrial fibrillation: results from GARFIELD-AF.

AIMS: The relationship between outcomes and time after diagnosis for patients with non-valvular atrial fibrillation (NVAF) is poorly defined, especially beyond the first year. METHODS AND RESULTS: GARFIELD-AF is an ongoing, global observational study of adults with newly diagnosed NVAF. Two-year outcomes of 17 162 patients prospectively enrolled in GARFIELD-AF were analysed in light of baseline characteristics, risk profiles for stroke/systemic embolism (SE), and antithrombotic therapy. The mean (standard deviation) age was 69.8 (11.4) years, 43.8% were women, and the mean CHA2DS2-VASc score was 3.3 (1.6); 60.8% of patients were prescribed anticoagulant therapy with/without antiplatelet (AP) therapy, 27.4% AP monotherapy, and 11.8% no antithrombotic therapy. At 2-year follow-up, all-cause mortality, stroke/SE, and major bleeding had occurred at a rate (95% confidence interval) of 3.83 (3.62; 4.05), 1.25 (1.13; 1.38), and 0.70 (0.62; 0.81) per 100 person-years, respectively. Rates for all three major events were highest during the first 4 months. Congestive heart failure, acute coronary syndromes, sudden/unwitnessed death, malignancy, respiratory failure, and infection/sepsis accounted for 65% of all known causes of death and strokes for <10%. Anticoagulant treatment was associated with a 35% lower risk of death. CONCLUSION: The most frequent of the three major outcome measures was death, whose most common causes are not known to be significantly influenced by anticoagulation. This suggests that a more comprehensive approach to the management of NVAF may be needed to improve outcome. This could include, in addition to anticoagulation, interventions targeting modifiable, cause-specific risk factors for death. CLINICAL TRIAL REGISTRATION: http://www.clinicaltrials.gov. Unique identifier: NCT01090362

Risk profiles and one-year outcomes of patients with newly diagnosed atrial fibrillation in India: Insights from the GARFIELD-AF Registry.

BACKGROUND: The Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF) is an ongoing prospective noninterventional registry, which is providing important information on the baseline characteristics, treatment patterns, and 1-year outcomes in patients with newly diagnosed non-valvular atrial fibrillation (NVAF). This report describes data from Indian patients recruited in this registry. METHODS AND RESULTS: A total of 52,014 patients with newly diagnosed AF were enrolled globally; of these, 1388 patients were recruited from 26 sites within India (2012-2016). In India, the mean age was 65.8 years at diagnosis of NVAF. Hypertension was the most prevalent risk factor for AF, present in 68.5% of patients from India and in 76.3% of patients globally (P < 0.001). Diabetes and coronary artery disease (CAD) were prevalent in 36.2% and 28.1% of patients as compared with global prevalence of 22.2% and 21.6%, respectively (P < 0.001 for both). Antiplatelet therapy was the most common antithrombotic treatment in India. With increasing stroke risk, however, patients were more likely to receive oral anticoagulant therapy [mainly vitamin K antagonist (VKA)], but average international normalized ratio (INR) was lower among Indian patients [median INR value 1.6 (interquartile range {IQR}: 1.3-2.3) versus 2.3 (IQR 1.8-2.8) (P < 0.001)]. Compared with other countries, patients from India had markedly higher rates of all-cause mortality [7.68 per 100 person-years (95% confidence interval 6.32-9.35) vs 4.34 (4.16-4.53), P < 0.0001], while rates of stroke/systemic embolism and major bleeding were lower after 1 year of follow-up. CONCLUSION: Compared to previously published registries from India, the GARFIELD-AF registry describes clinical profiles and outcomes in Indian patients with AF of a different etiology. The registry data show that compared to the rest of the world, Indian AF patients are younger in age and have more diabetes and CAD. Patients with a higher stroke risk are more likely to receive anticoagulation therapy with VKA but are underdosed compared with the global average in the GARFIELD-AF. CLINICAL TRIAL REGISTRATION-URL: http://www.clinicaltrials.gov. Unique identifier: NCT01090362

Exploring Enforced Collaborative Agreement in Gaming with Young People

This paper explores the concept of Enforced Collaborative Agreement (ECA) whereby players in a digital game must synchronously ‘agree’ on their controller inputs in order to interact. The focus of this paper is on the collaborative strategies young people (aged 14-16 years) adopted to reach decisions and control during gameplay. A two player collocated game supporting three different interaction methods has been studied. Video analysis of gameplay, along with post-gameplay interviews, surveys and gameplay interaction logs were used to gain insights into player behavior. The key contributions of the paper are an understanding of six key strategies players adopted to reach agreement within an ECA game, a set of more general issues related to the ECA gameplay, and an exploration of the impact of different interaction methods on gameplay experience. The work highlights the potential benefits of ECA in alleviating the often solitary nature of children’s computer use

Fiscal Deficit and Nigeria Economic Growth (1990-2020)

This paper focuses on fiscal deficit and Nigeria's economic growth. To achieve the objective of this study diagnostic check and unit root test using Phillips perron was employed to investigate time series data and to test the stationarity of the time series of the variables. Johansen co-integration analysis and Error Correction Model (ECM) are employed to test for a relationship between or among variables. The paper concludes that the driving variables of economic growth in Nigeria were Public external debt-PEXD, total federal collection revenue-TFCR, and interest rate-INTR. The public deficit financing was determined based on the study by the variables of Government expenditure (GOVE), real GDP, exchange rate-EXCR. The best model of ECM to determine the impact of fiscal deficit in Nigeria is the interaction with economic growth performance measures in Nigeria. The findings confirm that one standard deviation of shocks of fiscal deficit has a significant influence on economic growth, hence confirming the long-run relationship. The search recommended that Government should set its priority rights, be more committed to the budget implementation, and pay more attention to capital expenditure geared towards economic growth

Management Leadership Styles and Profitability of Production Firms in South East, Nigeria

&lt;p&gt;&lt;i&gt;The study examined the relationship between management leadership styles and profitability of production firms in South East, Nigeria. The specific objectives include to examine the extent of which autocratic leadership relates to profitability of production firms in South East, Nigeria and to investigate the extent of which democratic leadership relates to profitability of production firms in South East, Nigeria. The study adopted survey research design. The sample size of the study was 132 using purposive statistical method under what previous authors did. Questionnaire instrument was validated. The findings revealed that autocratic leadership had significant positive relationship with profitability of production firms in South East, Nigeria (t=.034, pv=0.05&lt;0.000) and democratic leadership had significant positive relationship with profitability of production firms in South East, Nigeria (t=.049, pv=0.05&lt;0.000). Based on findings, we conclude that conclude that management leadership styles had significant positive relationship with profitability of production firms in South East, Nigeria. Based on findings, the study recommended that government should put adequate leadership training, workshop and seminars to enable production boost their workers intellectual ability.&lt;/i&gt;&lt;/p&gt