386 research outputs found
Generalisations of Integral Inequalities of Hermite-Hadamard type through Convexity
In this paper, we establish various inequalities for some differentiable
mappings that are linked with the illustrious Hermite-Hadamard integral
inequality for mappings whose derivatives are --convex.The
generalised integral inequalities contribute some better estimates than some
already presented. The inequalities are then applied to numerical integration
and some special means.Comment: 11 Page
Survey of aflatoxins in chillies from Pakistan produced in rural, semi-rural and urban environments
Chilli peppers from Pakistan are consumed locally and also exported. Their quality is compromised by aflatoxins (AF) contamination. AF in chillies from rural, semi-rural and urban areas of the Punjab region of Pakistan were determined. Twenty-three (52.3%), 22 (50%) and 29 (65.9%) samples from rural, semi-rural and urban areas respectively, contained levels of aflatoxins which exceeded the European Union limits of >5 µg kg-1 for AFB1 and >10 µg kg-1 for total AF that apply to spices. Mean values for AFB1 in ground samples were 23.8, 14.8 and 14.0 µg kg-1 for rural, semi-rural and urban areas, respectively. Mean total AF in ground samples were 27.7, 17.7 and 16.2 µg kg-1 from equivalent locations. Eleven (50%), 12 (54.5%) and 14 (63.6%) whole samples from rural, semi-rural and urban areas, respectively, contained total levels of AF that exceeded European Union limits. The data indicate that individual localities have particular problems. In conclusion, the concentrations were often greater than the statutory limits set by the European Union.The authors acknowledge the financial support of the Higher Education Commission, Pakistan, under Indigenous PhD fellowship 5000 batch-III (Grant Number 063-00445-Ps3-047). R.R.M.P. is grateful for the FCT framework position: Commitment to Science (C2008-UMIN-HO-CEB-2)
Aflatoxin B1 in chilies from the Punjab region, Pakistan
The occurrence of aflatoxin B1 (AFB1) in chilies
from Pakistan was determined by using HPLC in work
undertaken in Pakistan.Whole (n=22) and powdered (n=22)
chilies were analyzed. Sixteen (73.0%) and 19 (86.4%)
samples of whole and ground chilies, respectively, were
contaminated. The mean concentration in powdered chilies
(32.20 μg/kg) was higher statistically than in whole chilies
(24.69 μg/kg). Concentrations ranged from 0.00 to 89.56 μg/
kg for powdered chilies, compared with 0.00–96.3 μg/kg for
whole chilies. The limits of detection and quantification were
0.05 μg/kg and 0.53 μg/kg, respectively. The concentrations
were high in general and greater than the statutory limit set
by the European Union. There is considerable scope for
improvements in chili production in Pakistan.Higher Education Commission, PakistanFundação para a Ciência e a Tecnologia (FCT
Double Truncated Transmuted Fréchet Distribution: Properties and Applications
In this paper, we modify the Mahmoud and Mandouh (2013) model by adopting double truncation technique. It is referred to as Double Truncated Transmuted Fréchet (DTTF) distribution. Diverse probabilistic and reliability measures are developed and discussed. The MLEs of parameters are derived and a simulation study is also made. The DTTF distribution is modeled by two real-time datasets and supportive rationalized results provide the evidence that DTTF distribution is a reasonably better fit model than its competing models. Keywords: Fréchet Distribution, Double Truncation, Hazard Function, Moments, MLE, Quadratic Rank Transmutation Map (QRTM), Rényi entropy, Order Statistics. DOI: 10.7176/MTM/9-3-02 Publication date: March 31st 201
Magnetometer heading estimation through online calibration for land navigation applications
For land navigation applications, the integration of the magnetometer with the combination of MEMS-INS and the Global Navigation Satellite System (GNSS) give excellent results. During land navigation applications, the magnetometer’s heading can also be used during the GNSS outages. The calibration of the magnetometer is indispensable to calculate its accurate heading. There exist several methods for magnetometer calibration. Some are offline and some are online calibration techniques. In this paper, a calibration method is proposed to estimate the magnetometer’s parameters through online calibration in run time. In this method, the reference magnetic field is calculated from the World Magnetic Model (WMM-2020). Moreover, reference roll, pitch and heading are provided from some other sources such as GNSS, Attitude Heading Reference System (AHRS), or reference INS. For different roll and pitch sectors, calibration parameters are estimated and stored. These parameters are used for magnetometer online calibration during the field testing. Both the headings obtained by the online calibration and conventional lab calibrations are analysed. Furthermore, the heading estimated through the online calibration is autonomous and fast. Subsequently, there is no user involvement in this online calibration technique and no specific movements to the device are provided. The heading obtained by novel technique is as accurate as obtained by conventional offline lab calibration
Snake Bite: Clinical Profile and Evaluation of Effective Anti-Snake Venom Dose
Background: To determine the optimal dose of antisnake venom required to treat hemotoxic snake bite more effectively. Methods: In this interventional study, out of 52 patients 46 patients with the features of systemic envenomation .i.e. deranged coagulation profile, nephrotoxic or neurotoxic features were assessed clinically and through laboratory tests, while 06 patients had no feature of envenomation. Patients with systemic envenomation were given Antisnake venom. Results: Hemotoxicity was the most common clinical manifestation of snake bite i.e. 39 patients of hemotoxic envenomation, 4 with neurotoxic features while 03 patients had mixed toxicity i.e. hemotoxic, neurotoxic and nephrotoxic. 12 patients responded to single dose of 06 vials (10 ml each vial; total dose of 60 ml), 28 patients required further dose of anti snake venom after initial dose of 6 vials while 06 patients received even higher dose of anti snake venom i.e. 18 vial (180 ml) with blood transfusion. Of these 06 patients, 02 required mechanical ventilation, 02 with nephrotoxicity were referred to dialysis unit, and 02 mortalities were encountered, one with intracranial bleed and other with mixed toxicity and delayed presentation of patient. Conclusion: Most patients with envenomation require higher dose of anti snake venom . An increase in morbidity and mortality is mainly due to delayed presentation after snake bite and under dosage of ASV
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