Study the Effect of Multilayer Single Point Incremental Forming on Tool Path Mark for AA1050 bottom plates

Single Point Incremental Sheet Forming (SPIF) is an innovative forming approach for sheet materials. One of the most problems in products produced by incremental sheet metal forming process is the poor textures caused by the tool and tool path marks on the products, due to friction between the tool and blank material. In this study, a new method and procedures were proposed which is called (Multilayer single point incremental forming) to overcome this problem by using an insert blank beside the original one with the same material but change in thickness of top plate at 0.5, 0.7, 0.9 mm and change material or lubrication between two plates such as (polymer, grease, grease with graphite, mos2 (Molybdenum disulfide) and without lubricant). Results revealed improvement in surface quality of bottom plates when using Grease with graphite or polymer gives a better result and reduced tool path marks more than other lubricants or material, which have been used

NA-ALGINATE BEADS OF CALCIUM / IRON-LAYERED DOUBLE HYDROXIDE FOR TREATING WATER CONTAMINATED WITH AMOXICILLIN ANTIBIOTIC

The objective of this study was to prepare an adsorbent material from eggshells of chicken banished to the ambient as wastes to satisfy the ecological requirements of sustainable. The preparation process based on the extraction of calcium ions from eggshells and these ions must be reacted with iron to form nanoparticles of (Ca/Fe)-layered double hydroxides (LDHs) which immobilized as Na-alginate beads. Molar ration of calcium to iron, pH and dosage of LDH nanoparticles must be equal to 1, 12 and 5 g/100 mL to ensure that the prepared beads have highest ability to remove of Amoxicillin (AMOX) antibiotic with removal efficiency equal to 32% for operational conditions of Co=100 mg/L, beads dosage=0.5 g/50 mL, speed=200 rpm, pH=7 for 3 hrs. To increase this efficiency to ≥ 90%, best conditions must be time 90 min, pH 7, and beads mass 1.2 g/ 50 mL for Co 100 mg/L at 200 rpm in the batch mode. The Pseudo second order has high capability in the description of such tests with coefficient of determination (R2) ≥ 0.9924 and sum of squared error (SSE) ≤ 0.1287. Hence, the sorption of AMOX onto beads is governed by the chemisorption process. The reflections of XRD analysis proved the presence of (Ca/Fe)-LDH nanoparticles with size of 13.49 nm, calcium hydroxide (Ca(OH)2) and calcium carbonate (CaCO3

High performance of solar panel based on new cooling and cleaning technique

There is a requirement for an elective wellspring of inexhaustible and earth feasible electrical vitality because of expanded power use and an unnatural weather change issues the world over. With the accumulation of dust and the surface temperature of cells or sun-based boards increase, their productivity drops significantly. Cooling and cleaning by using water can be utilized. Proteus and MikroC software have been used to simulate the model and write the code. In this paper, is design and an experimental study shrewd customized cleaning and cooling system for photo-voltaic (PV) modules installed in Ramadi, Iraq. Which is started dependent on low essentialness coming about due to dust accumulating and high temperature conditions. This was attempted by presenting two indistinct photovoltaic modules close to one another. The fundamental unit was equipped with a model of the cleaning structure while the resulting unit was seen as standard. An upgraded cleaning and cooling methodology are gotten with the data acquiring structure. An expansion in vitality profitability of 12.4% was acquired because of lessening the operational aggravations of residue amassing and warming of the board surface. The automatic cleaning mechanism used in the system reduces human stress by washing the PV panel with low energy use

Prevalence of anti-BK polyomavirus IgG in A Sample of Iraqi renal transplant recipients

Background: BK virus, a human polyomavirus, causes nephropathy and allograft loss in renal transplant recipients. Although it was discovered in 1971, understanding of the humoral immune response to BKV is limited. Objective: To serological detection and level estimation of anti-BK-IgG in renal-transplanted recipients and healthy blood donors as control. Patients and Methods: Serum samples were collected from 106 renal transplant recipient patients and 100 healthy  blood donors as control groups, and were analyzed for anti-BK IgG antibodies by using quantitative and qualitative Human BK Virus IgG (BK-IgG) ELISA kit for detection and estimation positivity of BK_IgG and titration. Results: Out of 206 subjects, 114(55.3%) have a positive result for BK-IgG. seropositivity was detected in 54(50.9%) of 106 RTR patients and 60 (60.0%) in the 100 control group, so there was no significant difference between seropositivity of BKV IgG antibody among the studied groups, p =0.191. Conclusion: The highly significant differences between seropositivity of BK-IgG with high levels of serum creatinine

The Cholecystectomy As A Day Case (CAAD) Score: A Validated Score of Preoperative Predictors of Successful Day-Case Cholecystectomy Using the CholeS Data Set

Background Day-case surgery is associated with significant patient and cost benefits. However, only 43% of cholecystectomy patients are discharged home the same day. One hypothesis is day-case cholecystectomy rates, defined as patients discharged the same day as their operation, may be improved by better assessment of patients using standard preoperative variables. Methods Data were extracted from a prospectively collected data set of cholecystectomy patients from 166 UK and Irish hospitals (CholeS). Cholecystectomies performed as elective procedures were divided into main (75%) and validation (25%) data sets. Preoperative predictors were identified, and a risk score of failed day case was devised using multivariate logistic regression. Receiver operating curve analysis was used to validate the score in the validation data set. Results Of the 7426 elective cholecystectomies performed, 49% of these were discharged home the same day. Same-day discharge following cholecystectomy was less likely with older patients (OR 0.18, 95% CI 0.15–0.23), higher ASA scores (OR 0.19, 95% CI 0.15–0.23), complicated cholelithiasis (OR 0.38, 95% CI 0.31 to 0.48), male gender (OR 0.66, 95% CI 0.58–0.74), previous acute gallstone-related admissions (OR 0.54, 95% CI 0.48–0.60) and preoperative endoscopic intervention (OR 0.40, 95% CI 0.34–0.47). The CAAD score was developed using these variables. When applied to the validation subgroup, a CAAD score of ≤5 was associated with 80.8% successful day-case cholecystectomy compared with 19.2% associated with a CAAD score >5 (p < 0.001). Conclusions The CAAD score which utilises data readily available from clinic letters and electronic sources can predict same-day discharges following cholecystectomy

Search for light long-lived neutral particles that decay to collimated pairs of leptons or light hadrons in pp collisions at s√ = 13 TeV with the ATLAS detector

A search for light long-lived neutral particles with masses in the O(MeV–GeV) range is presented. The analysis targets the production of long-lived dark photons in the decay of a Higgs boson produced via gluon–gluon fusion or in association with a W boson. Events that contain displaced collimated Standard Model fermions reconstructed in the calorimeter or muon spectrometer are selected in 139 fb−1 of s√ = 13 TeV pp collision data collected by the ATLAS detector at the LHC. Background estimates for contributions from Standard Model processes and instrumental effects are extracted from data. The observed event yields are consistent with the expected background. Exclusion limits are reported on the production cross-section times branching fraction as a function of the mean proper decay length cτ of the dark photon, or as a function of the dark-photon mass and kinetic mixing parameter that quantifies the coupling between the Standard Model and potential hidden (dark) sectors. A Higgs boson branching fraction above 1% is excluded at 95% CL for a Higgs boson decaying into two dark photons for dark-photon mean proper decay lengths between 10 mm and 250 mm and dark photons with masses between 0.4 GeV and 2 GeV

Measurements of differential cross-sections in top-quark pair events with a high transverse momentum top quark and limits on beyond the Standard Model contributions to top-quark pair production with the ATLAS detector at s√ = 13 TeV

Cross-section measurements of top-quark pair production where the hadronically decaying top quark has transverse momentum greater than 355 GeV and the other top quark decays into ℓνb are presented using 139 fb−1 of data collected by the ATLAS experiment during proton-proton collisions at the LHC. The fiducial cross-section at s√ = 13 TeV is measured to be σ = 1.267 ± 0.005 ± 0.053 pb, where the uncertainties reflect the limited number of data events and the systematic uncertainties, giving a total uncertainty of 4.2%. The cross-section is measured differentially as a function of variables characterising the tt¯ system and additional radiation in the events. The results are compared with various Monte Carlo generators, including comparisons where the generators are reweighted to match a parton-level calculation at next-to-next-to-leading order. The reweighting improves the agreement between data and theory. The measured distribution of the top-quark transverse momentum is used to search for new physics in the context of the effective field theory framework. No significant deviation from the Standard Model is observed and limits are set on the Wilson coefficients of the dimension-six operators OtG and O(8)tq, where the limits on the latter are the most stringent to date

Calcium/iron-layered double hydroxides-sodium alginate for removal of tetracycline antibiotic from aqueous solution

The current work is to produce the new adsorbent from chicken eggshells wastes which support the efforts directed to reuse such wastes to achieve the sustainable concepts. Calcium ions have been extracted from eggshells and mixed with iron under best conditions to prepare nanoparticles of calcium / iron (Ca/Fe)-layered double hydroxides (LDHs). The nanoparticles must be immobilized using sodium alginate to obtain the spherical particles named (Ca/Fe)-LDH-sodium alginate beads that tested for eliminating of tetracycline (TC) antibiotic from aquatic environment. The proper conditions for manufacturing of mentioned beads were molar ratio of (Ca/Fe) = 1, pH 12 and nanoparticles dosage = 6 g/ 100 mL. To ensure the TC removal efficiency ≥ 95 %, sorption tests must be agitated at time 90 min, pH 7, 200 rpm and beads dosage 1.2 g/ 50 mL for initial concentration (Co) 100 mg/L. Langmuir isotherm and Pseudo second order have acceptable ability in the description of such tests with highest sorption capacity of 10.393 mg/g. The formation of nanoparticles in the manufactured beads was proved by the characterization tests. Also, the increase of carbon (C) and nitrogen (N) in the beads beyond interaction with polluted water confirms the occurrence of antibiotic sorption

A Scalable and Reliable Hybrid Scheme for Image Multicast Applications

Publication in the conference proceedings of EUSIPCO, Toulouse, France, 200

Prevalence of Salmonella and E. coli in neonatal diarrheic calves

Neonatal calf diarrhea remains one of the most important problems faced by livestock, causing great economic losses. This study investigated the prevalence of Salmonella and Escherichia coli, especially enterotoxigenic E. coli (ETEC), in diarrheic calves. Fecal samples were collected from 127 diarrheic calves up to 3 months of age at 12 farms from different governorates in Egypt. 119 bacterial isolates (93.7%) were recovered and the prevalences of Salmonella and E. coli in diarrheic calves were 18.1% and 75.6%, respectively. Serotyping of Salmonella isolates revealed that S. Enteritidis and S. Typhimurium were the most prevalent serotypes, representing 60.9% and 30.4%, respectively, while S. Dublin was 8.7%. Serogrouping of E. coli isolates showed that 10 O-serogroups were obtained where O26 and O103 were the most prevalent (17.7% of each). Salmonella serotypes showed positive results with PCR test using oligonucleotide primer amplifying 521 bp fragment of invA gene of Salmonella while 70% of E. coli serogroups possessed ETEC virulent gene (K99). The in-vitro antibiotic sensitivity test indicated that Salmonella serotypes showed high sensitivity against enrofloxacin, spectinomycin and neomycin while E. coli isolates showed high sensitivities against marbofloxacin, spectinomycin and neomycin only