Source current harmonic mitigation of distorted voltage source by using shunt active power filter

In this paper, three-phase, four-wire shunt active power filter (SAPF) is utilized to mitigate system harmonics of distorted voltage source for unbalanced and nonlinear loads. Basically, the source voltage should be pure sinusoidal waveform to get a good mitigation of source current harmonics. In this under study system, the source voltage is assumed to be harmonic distortion non-sinusoidal voltage source. The phase locked loop (PLL) control circuit is wielded for extracting the fundamental component of the distorted source voltage to use it as an input signal to the SAPF control. Another input signal to the SAPF is the distorted load current. The SAPF control system uses (p-q) theory to calculate the optimum instantaneous current to be injected by the SAPF to mitigate the source current harmonics even the source voltage is harmonic distorted. MATLAB/SIMULINK software package is utilized to simulate the system under study. The effect of SAPF is tested when it’s used with and without the PLL control circuit. The simulation results show that, the THD of source current when using the PLL control circuit is improved to comply with the harmonic limits given in the IEEE 519-1992 and IEC 61000-4-7 standards

Multidrug resistant Acinetobacter species infection among neonatal sepsis

Background: Neonatal septicemia is regarded as one of the leading causes of mortality as well as morbidity globally. There is emerging evidence that multidrug resistant Acinetobacter baumannii (MDRAB) and mortality are linked in the scientific literature.Objective: It was the goal of this work to improve the prognosis of neonates with Acinetobacter species through early detection of infection and risk factors associated with increased mortality and effective management.Patients and Methods: Our study was done on 60 neonates who were suspected to having sepsis at Zagazig University Hospitals, Pediatric Department. All neonatal blood samples were taken aseptically and the bacteria that caused septicemia were identified. Acinetobacter species were identified. Drug sensitivity tests were performed on a variety of risk variables.Results: Only nine patients had Acinetobacter infection (15% of all patients) and two thirds of them had multi drug resistance (resistant for ≥3 antimicrobials). Gestational age more than or equal 36 weeks was protective factor against getting infection with MDR-Acinetobacter among the studied patients. Acinetobacter was most sensitive to ciprofloxacin and tigecycline antibiotic, while it was most resistant to sulphamethoxazole /trimethoprim antibioticsConclusion: Neonatal MDR Acinetobacter septicemia is on the rise, and it's connected with high morbidity as well as mortality rates. There must be an infection control policy in place at every neonatal intensive care unit (NICU) in order to control Acinetobacter infection and enhance outcomes

Solvatochromism and potentiometic studies of some active nitroso- and nitroso-azo- compounds

The stability studies of biologically active 2,4-dinitrosoresorcinol, o-carboxy phenylazo-dinitrosoresorcinol, N,N`-bis-[4,4`-(1,3-diphenyltriazine)]-diacetamide, 2-amino-6-phenylazo-pyridin-3-ol, 2-amino-3-hydroxy-pyridin-6-ylazo)-benzoic acid, 4-(2-amino-3-hydroxy-pyridin-6-ylazo)-benzoic acid ethyl ester and N-[4-(2-amino-3-hydroxy-pyridin-6-ylazo)-phenyl]-acetamide compounds were studied. The dissociation constants were determined potentiometrically. The thermodynamic parameters of dissociation were evaluated. Regression analysis is applied for correlating the different parameters. The results help to assign the solute-solvent interactions and the solvatochromic potential of the investigated compounds. The electronic character of the substituent and the chemical nature of the solvent are major factors for the observed solvatochromism

Effectiveness of Structured Nursing Teaching Program on Outcomes of Chronic Low Back Pain Patients Undergoing Radiofrequency Ablation

Background: Chronic low back pain is a full disorder that considers an important health problem. Aim: To evaluate the effectiveness of structured teaching program on outcomes of chronic low back pain patients undergoing radiofrequency ablation. Methods: A quasi-experimental research design has been utilized. Setting: Anesthesia and pain management department at the main Assiut University Hospital. Sample: Sixty low back pain patients undergoing radiofrequency ablation. They were randomly assigned in two groups of 30 patients each. Tools: three tools were utilized: Tool I: Structured interview patients' questionnaire. Tool II: Visual analogue pain scale and Tool III: "Modified Oswestry low back pain disability questionnaire" in addition, structured nursing teaching program. Results: More than half (53.3%) of the case group their age was from 18 to < 55 years, and the rest of them (46.7%) were older adults aged 55 years and more. 80% of the case group had good knowledge post implementation of the program. (100%) of the case group had worst pain intensity level which decrease to (46.7%) post program. 40% of case group had sever disability, which decreased to 30% post implementation of the program. there were significant relation between pain analogue scale and Oswestry low back pain disability scale in pre and post structured nursing teaching program regarding to occupation Conclusion: Structured nursing teaching program had an effective strategy to improve the patients’ outcomes through increasing patients' knowledge, and decreasing both pain intensity and physical disability in the case group versus the control group. Recommendation: Supervised structured teaching program should be carried out for all patients undergoing radiofrequency ablation about pre-and post-procedure instructions and helpful hints for a healthy back when standing, walking, sitting, sleeping, and lifting. Keywords: Chronic low back pain, Radiofrequency ablation, structured nursing teaching program. DOI: 10.7176/JHMN/65-08 Publication date: August 31st 201

Assessment of Some Mango Species by Fruit Characters and Fingerprint

Abstract: Six local mango accessions; Zebda, Zaghloul, Gemela, Ganofia, El-Madam and ElKobbaneia were collected from private farm in Sharkia Governorate. Physical and chemical characteristics of fruits study besides of molecular characterization (as total proteins). The data showed that El-Kobbaneia fruit had the biggest fruit also El-Madam produced the smallest one. The lowest fiber percentage was clear in Ganofia fruit followed by Zebda fruit as compared with all mango fruits under study. The highest fruit Juice percentage was shown in El-Kobbaneia fruit, while Ganofia fruit had the lowest one. Also, the lowest titrable acidity was clear in Ganofia fruit, but the highest one was detected in Zebda fruit. Meanwhile, the highest total sugar was clear in Gemela fruit. However, El-Madam fruit had the lowest VC. The highest total number of variable bands (seven) was existed in Zebda species while the lowest number was presented in Ganofia species (2 bands). The percentage of polymorphism in all mango species ranged between 16.7% in both EL-Kobbaneia and Gemela species to 29.2 % in Zebda species

Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis

BACKGROUND: Rates of antimicrobial resistance (AMR) are rising globally and there is concern that increased migration is contributing to the burden of antibiotic resistance in Europe. However, the effect of migration on the burden of AMR in Europe has not yet been comprehensively examined. Therefore, we did a systematic review and meta-analysis to identify and synthesise data for AMR carriage or infection in migrants to Europe to examine differences in patterns of AMR across migrant groups and in different settings. METHODS: For this systematic review and meta-analysis, we searched MEDLINE, Embase, PubMed, and Scopus with no language restrictions from Jan 1, 2000, to Jan 18, 2017, for primary data from observational studies reporting antibacterial resistance in common bacterial pathogens among migrants to 21 European Union-15 and European Economic Area countries. To be eligible for inclusion, studies had to report data on carriage or infection with laboratory-confirmed antibiotic-resistant organisms in migrant populations. We extracted data from eligible studies and assessed quality using piloted, standardised forms. We did not examine drug resistance in tuberculosis and excluded articles solely reporting on this parameter. We also excluded articles in which migrant status was determined by ethnicity, country of birth of participants' parents, or was not defined, and articles in which data were not disaggregated by migrant status. Outcomes were carriage of or infection with antibiotic-resistant organisms. We used random-effects models to calculate the pooled prevalence of each outcome. The study protocol is registered with PROSPERO, number CRD42016043681. FINDINGS: We identified 2274 articles, of which 23 observational studies reporting on antibiotic resistance in 2319 migrants were included. The pooled prevalence of any AMR carriage or AMR infection in migrants was 25·4% (95% CI 19·1-31·8; I2 =98%), including meticillin-resistant Staphylococcus aureus (7·8%, 4·8-10·7; I2 =92%) and antibiotic-resistant Gram-negative bacteria (27·2%, 17·6-36·8; I2 =94%). The pooled prevalence of any AMR carriage or infection was higher in refugees and asylum seekers (33·0%, 18·3-47·6; I2 =98%) than in other migrant groups (6·6%, 1·8-11·3; I2 =92%). The pooled prevalence of antibiotic-resistant organisms was slightly higher in high-migrant community settings (33·1%, 11·1-55·1; I2 =96%) than in migrants in hospitals (24·3%, 16·1-32·6; I2 =98%). We did not find evidence of high rates of transmission of AMR from migrant to host populations. INTERPRETATION: Migrants are exposed to conditions favouring the emergence of drug resistance during transit and in host countries in Europe. Increased antibiotic resistance among refugees and asylum seekers and in high-migrant community settings (such as refugee camps and detention facilities) highlights the need for improved living conditions, access to health care, and initiatives to facilitate detection of and appropriate high-quality treatment for antibiotic-resistant infections during transit and in host countries. Protocols for the prevention and control of infection and for antibiotic surveillance need to be integrated in all aspects of health care, which should be accessible for all migrant groups, and should target determinants of AMR before, during, and after migration. FUNDING: UK National Institute for Health Research Imperial Biomedical Research Centre, Imperial College Healthcare Charity, the Wellcome Trust, and UK National Institute for Health Research Health Protection Research Unit in Healthcare-associated Infections and Antimictobial Resistance at Imperial College London

Surgical site infection after gastrointestinal surgery in high-income, middle-income, and low-income countries: a prospective, international, multicentre cohort study

Background: Surgical site infection (SSI) is one of the most common infections associated with health care, but its importance as a global health priority is not fully understood. We quantified the burden of SSI after gastrointestinal surgery in countries in all parts of the world. Methods: This international, prospective, multicentre cohort study included consecutive patients undergoing elective or emergency gastrointestinal resection within 2-week time periods at any health-care facility in any country. Countries with participating centres were stratified into high-income, middle-income, and low-income groups according to the UN's Human Development Index (HDI). Data variables from the GlobalSurg 1 study and other studies that have been found to affect the likelihood of SSI were entered into risk adjustment models. The primary outcome measure was the 30-day SSI incidence (defined by US Centers for Disease Control and Prevention criteria for superficial and deep incisional SSI). Relationships with explanatory variables were examined using Bayesian multilevel logistic regression models. This trial is registered with ClinicalTrials.gov, number NCT02662231. Findings: Between Jan 4, 2016, and July 31, 2016, 13 265 records were submitted for analysis. 12 539 patients from 343 hospitals in 66 countries were included. 7339 (58·5%) patient were from high-HDI countries (193 hospitals in 30 countries), 3918 (31·2%) patients were from middle-HDI countries (82 hospitals in 18 countries), and 1282 (10·2%) patients were from low-HDI countries (68 hospitals in 18 countries). In total, 1538 (12·3%) patients had SSI within 30 days of surgery. The incidence of SSI varied between countries with high (691 [9·4%] of 7339 patients), middle (549 [14·0%] of 3918 patients), and low (298 [23·2%] of 1282) HDI (p < 0·001). The highest SSI incidence in each HDI group was after dirty surgery (102 [17·8%] of 574 patients in high-HDI countries; 74 [31·4%] of 236 patients in middle-HDI countries; 72 [39·8%] of 181 patients in low-HDI countries). Following risk factor adjustment, patients in low-HDI countries were at greatest risk of SSI (adjusted odds ratio 1·60, 95% credible interval 1·05–2·37; p=0·030). 132 (21·6%) of 610 patients with an SSI and a microbiology culture result had an infection that was resistant to the prophylactic antibiotic used. Resistant infections were detected in 49 (16·6%) of 295 patients in high-HDI countries, in 37 (19·8%) of 187 patients in middle-HDI countries, and in 46 (35·9%) of 128 patients in low-HDI countries (p < 0·001). Interpretation: Countries with a low HDI carry a disproportionately greater burden of SSI than countries with a middle or high HDI and might have higher rates of antibiotic resistance. In view of WHO recommendations on SSI prevention that highlight the absence of high-quality interventional research, urgent, pragmatic, randomised trials based in LMICs are needed to assess measures aiming to reduce this preventable complication

Substituent Effects on Stability of Complexes of Iron(III), Cobalt(II), Nickel(II) & Copper(II) with Azocresols

347-34

Acid Dissociation Constants of Some 2-Hydroxy-5-methyl-4-Substituted-azobenzenes & Formation Constants of Their Chelates with Iron(III), Cobalt(II), Nickel(II) & Copper(II)

584-58

Potentiometric & Spectrophotometric Determinations of Dissociation Constants of B-Diketoarylazo Compounds

502-50