36 research outputs found
Safety Distance Calculations for Macrocell Mobile Base Station and on Site Radiation Measurements
No full textComparison between X-Ray Radiography Image Fusion Algorithms Used in Medical Applications
No full textA Novel Design of Water-Flow Based Electrical Generator as an Energy Harvesting Device
No full textThis paper is aimed to investigate, experimentally, new two designs of Energy Harvesting Device: Water-Flow Based Electrical Generator (WEG). This device directly converts the motion of water inside a permanent magnet tube to electricity. Its output power is affected by several parameters such as permanent-magnet tube diameter, its length, water velocity and the concentration of minerals in the water (fresh, sewage or sea water). The relationship and dependency of these parameters are examined experimentally to obtain a set of graphs which can determine the suitability and performance of the proposed model for different applications. Advantages of these new models are clean power resource, simple and non-expensive design. The output power of these generators can power or recharge cell phones, mobile computers, radio communication equipment, stairs lighting of residential towers, commercial street signs, inside sea signs, etc
Enhancement of MTC Performance in LTE Networks by Maximizing Random Access Procedure Throughput
No full text
Author Correction: COVID-19 infection segmentation using hybrid deep learning and image processing techniques
No full textTransoesophageal Doppler compared to central venous pressure for perioperative hemodynamic monitoring and fluid guidance in liver resection
No full textPurpose: Major hepatic resections may result in hemodynamic changes. Aim is to study transesophageal Doppler (TED) monitoring and fluid management in comparison to central venous pressure (CVP) monitoring. A follow-up comparative hospital based study. Methods: 59 consecutive cirrhotic patients (CHILD A) undergoing major hepatotomy. CVP monitoring only (CVP group), (n=30) and TED (Doppler group), (n=29) with CVP transduced but not available on the monitor. Exclusion criteria include contra-indication for Doppler probe insertion or bleeding tendency. An attempt to reduce CVP during the resection in both groups with colloid restriction, but crystalloids infusion of 6 ml/kg/h was allowed to replace insensible loss. Post-resection colloids infusion were CVP guided in CVP group (5-10 mmHg) and corrected flow time (FTc) aortic guided in Doppler group (>0.4 s) blood products given according to the laboratory data. Results: Using the FTc to guide Hydroxyethyl starch 130/0.4 significantly decreased intake in TED versus CVP (1.03 [0.49] versus 1.74 [0.41] Liter; P>0.05). Nausea, vomiting, and chest infection were less in TED with a shorter hospital stay (P 0.05). Cardiac index and stroke volume of TED increased post-resection compared to baseline, 3.0 (0.9) versus 3.6 (0.9) L/min/m 2 , P>0.05; 67.1 (14.5) versus 76 (13.2) ml, P>0.05, respectively, associated with a decrease in systemic vascular resistance (SVR) 1142.7 (511) versus 835.4 (190.9) dynes.s/cm 5 , P>0.05. No significant difference in arterial pressure and CVP between groups at any stage. CVP during resection in TED 6.4 (3.06) mmHg versus 6.1 (1.4) in CVP group, P=0.6. TED placement consumed less time than CVP (7.3 [1.5] min versus 13.2 [2.9], P>0.05). Conclusion: TED in comparison to the CVP monitoring was able to reduced colloids administration post-resection, lower morbidity and shorten hospital stay. TED consumed less time to insert and was also able to present significant hemodynamic changes. Advanced surgical techniques of resection play a key role in reducing blood loss despite CVP more than 5 cm H 2 O. TED fluid management protocols during resection need to be developed
Correction: Epidemiology and outcomes of early-onset AKI in COVID-19-related ARDS in comparison with non-COVID-19-related ARDS: insights from two prospective global cohort studies (Critical Care, (2023), 27, 1, (3), 10.1186/s13054-022-04294-5)
No full textFollowing publication of the original article [1], the authors identified that the collaborating authors part of the collaborating author group CCCC Consortium was missing. The collaborating author group is available and included as Additional file 1 in this article
Wafer classification using support vector machines
No full textIncreasing yield is a primary concern to integrated circuit manufacturing companies as it dictates the readiness of a new process for high volume manufacturing. In order to expedite the process of discovering yield issues, companies have started looking for ways to perform early prediction for such issues. This paper suggests the use of the support vector machines (SVMs) for early wafer classification. The choice of SVM is motivated by the model's ability to effectively classify multivariate, multimodal, and inseparable data points. This model uses multidimensional hyperplanes to separate and classify wafers into low-yield and high-yield classes. This paper includes a proposal for how the classification model can be applied for yield classification and how it can be adaptively updated in a manufacturing environment. We show how the values for the SVM parameters can be selected for best yield classification. Furthermore, performance evaluation is conducted on real manufacturing data, comparing the proposed SVM classifier to state of the art. Results show that in all cases, SVM consistently outperforms other methods with and without adaptive model updates. The experiments also show that all classifiers' performances depend on yield thresholds. It is also shown that the classification model can be built and executed using a reduced set without compromising its accuracy. © 1988-2012 IEEE.Abe S., 2005, SUPPORT VECTOR MACHI; Boser B, 1992, P 5 ANN WORKSH COMP, V5, P144, DOI DOI 10.1145-130385.130401; Botros Y, 2003, P SOC PHOTO-OPT INS, V5044, P121, DOI 10.1117-12.485311; Botros Y., 2003, P AEC APC S 4; Chapelle O, 2002, MACH LEARN, V46, P131, DOI 10.1023-A:1012450327387; Chin W. W., 2010, HDB PARTIAL LEAST SQ; Dasarathy B. V., 1991, NEAREST NEIGHBOR NN; Dupret Y., 2005, P IEEE SEM ADV SEM M, P118; Fayed A., 2003, P AEC APC S 25 SEP; Fenner J., 2000, P AEC APC S 12 SEP, VXII; Hajj H., 1998, P FLEX AUT INT MAN C; Hajj H., 2006, P AEC APC S 18, VXVIII; Hajj H, 2007, P SOC PHOTO-OPT INS, V6730, pQ7300, DOI 10.1117-12.746844; Hall M., 2000, P 17 INT C MACH LEAR, P359; Han J., 2001, DATA MINING CONCEPTS; He QP, 2008, P AMER CONTR CONF, P1606, DOI 10.1109-ACC.2008.4586721; He QP, 2007, IEEE T SEMICONDUCT M, V20, P345, DOI 10.1109-TSM.2007.907607; Khan AA, 2008, J PROCESS CONTR, V18, P961, DOI 10.1016-j.jprocont.2008.04.014; Kittler R., 2000, P INT C MOD AN SEM M, P270; Li TS, 2006, J INTELL MANUF, V17, P355, DOI 10.1007-s10845-005-0008-7; Lin TH, 2009, IEEE T SEMICONDUCT M, V22, P204, DOI 10.1109-TSM.2008.2011185; MACGREGOR JF, 1995, CONTROL ENG PRACT, V3, P403, DOI 10.1016-0967-0661(95)00014-L; May G. S., 2006, FUNDAMENTALS SEMICON; Moore G. E., 1975, P IEEE INT EL DEV M, P11; Moyne J, 2001, RUN TO RUN CONTROL S; Moyne JR, 2007, IEEE T SEMICONDUCT M, V20, P408, DOI 10.1109-TSM.2007.907617; Quinlan J. R., 1993, C4 5 PROGRAMS MACHIN; SPECHT DF, 1991, IEEE T NEURAL NETWOR, V2, P568, DOI 10.1109-72.97934; Wong A. Y., 1996, Proceedings. 1996 IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems (Cat. No.96TB100081), DOI 10.1109-DFTVS.1996.57201274
IN-VITRO ANTICOAGULANT EFFECT OF AERIAL PARTS EXTRACTS OF YEMENI FAGONIA SCHWEINFURTHII HADIDI
No full textBackground: Blood coagulation is a quick and effective process that results in the creation of clots, which demands to monitor. Many illness disorders include an abnormality in blood coagulation. This study examined the in vitro effects of methanol, ethyl acetate, and n-hexane extracts from aerial parts of Fagonia schweinfurthii Hadidi on healthy human volunteers' blood coagulation. 
Methods: The Secondary metabolites were extracted from dried and crushed F. schweinfurthii aerial parts using n-hexane, ethyl acetate, and methanol, respectively. Additionally, the extracts were tested in vitro at different concentrations (10-100 µg/ml) on the blood coagulation profile, prothrombin time (PT), and activated partial thromboplastin time (a PTT) of apparently healthy human volunteers.
Results: Methanol, ethyl acetate, and n-hexane extracts of F. schweinfurthii aerial parts significantly (p˃0.05) prolonged PT and PTT in the blood of healthy human volunteers with Ethyl acetate and methanol extracts recorded the largest prolongation of PT and PTT correspondingly. The highest PT and PTT prolongation was achieved at 100µg/ml, and the least prolongation time was obtained at 10µg/ml.
Conclusion: These findings displayed that F. schweinfurthii aerial parts contain phytochemical constituents with anticoagulant characteristics and could be used to treat blood clotting disorders.

Peer Review History: 
Received: 26 April 2022; Revised: 12 June; Accepted: 30 June, Available online: 15 July 2022
Academic Editor: Dr. DANIYAN Oluwatoyin Michael, Obafemi Awolowo University, ILE-IFE, Nigeria, [email protected]
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Received file: Reviewer's Comments:
Average Peer review marks at initial stage: 5.5/10
Average Peer review marks at publication stage: 7.0/10
Reviewers:
Dr. Gehan Fawzy Abdel Raoof Kandeel, Pharmacognosy Department, National Research Centre, Dokki, 12622, Giza, Egypt, [email protected] 
Dr. Marwa A. A. Fayed, University of Sadat City, Egypt, [email protected]
Prof. Dr. Hüsniye Kayalar, Ege University, Turkey, [email protected]
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