To Duckweeds (\u3cem\u3eLandoltia punctata\u3c/em\u3e), Nanoparticulate Copper Oxide is More Inhibitory than the Soluble Copper in the Bulk Solution

CuO nanoparticles (CuO-NP) were synthesized in a hydrogen diffusion flame. Particle size and morphology were characterized using scanning mobility particle sizing, Brunauer–Emmett–Teller analysis, dynamic light scattering, and transmission electron microscopy. The solubility of CuO-NP varied with both pH and presence of other ions. CuO-NP and comparable doses of soluble Cu were applied to duckweeds, Landoltia punctata. Growth was inhibited 50% by either 0.6 mg L−1 soluble copper or by 1.0 mg L−1 CuO-NP that released only 0.16 mg L−1 soluble Cu into growth medium. A significant decrease of chlorophyll was observed in plants stressed by 1.0 mg L−1 CuO-NP, but not in the comparable 0.2 mg L−1 soluble Cu treatment. The Cu content of fronds exposed to CuO-NP is four times higher than in fronds exposed to an equivalent dose of soluble copper, and this is enough to explain the inhibitory effects on growth and chlorophyll content

Arp Spoofing Detection via Wireshark and Veracode

In current scenario, static and DHCP both has addressing schemes which also protect large number of end users without any burden on administrator. Also performance study need real network[1] and the final result shows that end user take not more than one millisecond to register himself or herself for protected ARP cache. Lastly server can hinder any external attacker in only a moment

Takotsubo cardiomyopathy: ten year experience at a tertiary care hospital in Pakistan.

Objective: There is very little literature regarding Takotsubo Cardiomyopathy (TTC) from the Asian Countries other than Japan and Korea. We conducted this study to determine the demographics, clinical presentations, complications and recovery of left ventricular (LV) systolic function in TTC patients of Pakistani origin. Methods: A ten years retrospective case series study of TTC was conducted at the Aga Khan University Hospital. Patients were followed for up to six months after presentation, with special emphasis on the recovery of LV function. Conclusion: TTC is classically triggered by an acute illness or by extreme stress and a triggering incident may not always be identified. It usually presents in the guise of an acute coronary syndrome (ACS). Our data was congruent with the existing literature, except for more heart failure and cardiogenic shock. Average Troponin-I (Tn-I) levels were also higher as compared to western population. The reason for more severity in our patients may be late presentation or different level of response to stress

Peripartum cardiomyopathy: ten year experience at a tertiary care hospital in Pakistan.

Background: There is very little literature regarding peripartum cardiomyopathy from the Asian countries. We conducted this study to determine demographic details, clinical presentations, complications and recovery of left ventricular (LV) systolic function in peripartum cardiomyopathy (PPCMP) patients of Pakistani origin. Method: A ten year retrospective case series of PPCMP was conducted at the Aga Khan University Hospital. Patients were also followed up for six months after presentation, with special regard to improvement in the LV function. Results: Total 45 patients were included, 25 (55.5%) primigravida and 8 (17.7%) gravida 2 and the remaining 12 (26.6%) were multigravida. Fourteen patients (31.1%) presented during pregnancy and 31 (68.8%) after delivery. All patients presented with CHF and three (6.6%) were complicated with ventricular tachycardia (VT) at presentation. LV systolic dysfunction was present in 39 (86.66%) patients and RV dysfunction in 15 (33.3%) patients. Two patients had LV clot and thromboembolic stroke occurred in another 4 patients. All patients received standard treatment except three patients who had asthma and could not be given beta blockers. Echocardiogram was repeated after 6 month and in 32 (71.1%) patients LV functions recovered to normal. RV function improved in all except 2 (4.4%) patients. All patients were discharged in stable condition. Conclusion: Significant numbers of PPCMP patients, who had severe LV dysfunction at presentation recovered their LV functions at six month follow u

Spontaneous coronary artery dissection: a rare cause of acute coronary syndrome.

We present a case of a 71-year-old man, with a history of hypertension and dyslipidaemia, who presented with typical cardiac chest pain and palpitations of 2 h duration. The examination revealed irregular pulse of 138 bpm, blood pressure 115/75 mm Hg, variable first and normal second heart sounds. The lungs were clear to auscultation. The ECG showed atrial fibrillation with a rapid ventricular rate. His heart rate was controlled with β blockers and the acute coronary syndrome treatment protocol was initiated. His baseline blood reports were within normal limits and two serial troponin I tests were negative. Coronary angiogram showed dissection in the left coronary system extending into the branch vessels and 30-40% stenosis in the right coronary artery. The patient underwent coronary artery bypass graft as an emergent case. He suffered a mild stroke postsurgery with complete functional recovery. He is being followed up in the clinic and has performed well

The prion strain phenomenon: molecular basis and unprecedented features.

Prions are unconventional infectious agents responsible for transmissible spongiform encephalopathies. Compelling evidences indicate that prions are composed exclusively by a misfolded form of the prion protein (PrP(Sc)) that replicates in the absence of nucleic acids. One of the most challenging problems for the prion hypothesis is the existence of different strains of the infectious agent. Prion strains have been characterized in most of the species. Biochemical characteristics of PrP(Sc) used to identify each strain include glycosylation profile, electrophoretic mobility, protease resistance, and sedimentation. In vivo, prion strains can be differentiated by the clinical signs, incubation period after inoculation and the lesion profiles in the brain of affected animals. Sources of prion strain diversity are the inherent conformational flexibility of the prion protein, the presence of PrP polymorphisms and inter-species transmissibility. The existence of the strain phenomenon is not only a scientific challenge, but it also represents a serious risk for public health. The dynamic nature and inter-relations between strains and the potential for the generation of a large number of new prion strains is the perfect recipe for the emergence of extremely dangerous new infectious agents

Accessibility analysis of higher education institution websites of Portugal

The higher education institutions across the globe are steadily increasing their usage of the web platforms to disseminate information to its stakeholders. In this background, it becomes important to make these resources inclusive. An inclusive website of a higher education institution will facilitate seamless access to its resources for Persons with Disabilities (PwDs). This paper presents an accessibility analysis of 59 higher education websites of Portugal. Both Polytechnic (19) and University (40) websites were incorporated into the study.The accessibility analysis is carried out with three major tools: AChecker, WAVE, and aXe. With respect to the AChecker tool, the average of known problems was observed almost doubled in Universities than Polytechnic Institution websites of Portugal under all levels of conformance. With respect to WAVE tool, we found that the average of alerts, structural elements, and HTML5 & ARIA in terms of web accessibility status of websites of Polytechnic Institutes are less than the Universities, but contrast errors are found with more frequency in Polytechnic Institutes than in universities, and the average of errors and features are almost the same in both of the cases. Also, we found that the average number of violations and needs of review guidelines as per aXe tool are 50.84 and 21.47 in Polytechnic Institutes? websites and 30.75 and 27.83 in Universities websites belonging to Portugal, respectively. Based on scores obtained by these accessibility analysis tools, the outliers of accessibility violations are calculated with respect to websites of Polytechnic Institutes and Universities of Portugal. Moreover, we also suggested and discussed the important clues to solve the accessibility violations of websites along with their issue descriptions among the selected websites in this study. Hence, this analysis report provides the feedback to website administrator and web developers to improve the accessibility evaluation status of these websites.5311-8814-F0ED | Sara Maria da Cruz Maia de Oliveira PaivaN/

INVESTOR ATTENTION AND HERDING IN THE CRYPTOCURRENCY MARKET DURING THE COVID-19 PANDEMIC

This study examines the relationship between investor attention and herding effects in the cryptocurrency market by employing the vector autoregression and quantile regression models. Furthermore, we examine whether the COVID-19 pandemic affected herding behaviour in cryptocurrencies. Using the daily closing price and Google search volume of the five leading cryptocurrencies, the paper finds that herding in the cryptocurrency market decreases with an increase in investor attention for the overall sample. The results for the COVID-19 period indicate that the impact of investor attention on the herding effect decreases due to increased attention to the pandemic. This study is one of the initial attempts to examine the impact of investor attention on herding in cryptocurrencies