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Double dartos flap layer in tubularized incised plate urethroplasty to prevent urethrocutaneous fistula in uncircumcised patients with distal hypospadias

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Asian Journal of Andrology 2023年第1期25卷 93-97页

作者： Raed Al-Taher mohammad Nofal Ali J Yousef mohammad rashdan Amjad Tarawneh Jad Alsmadi Eman Hasan Dalal Alshareefi Danah Alenezi Bashayer Abdulrasoul Department of General Surgery Division of Pediatric SurgerySchool of MedicineThe University of JordanAmman 11942Jordan Department of General Surgery and Anesthesia School of MedicineMutah UniversityKarak 61710Jordan Department of Pediatrics School of MedicineMutah UniversityKarak 61710Jordan Department of General and Special Surgery Division of UrologyFaculty of MedicineThe Hashemite UniversityZarqa 13133Jordan

Urethrocutaneous fistula may complicate hypospadias *** noticed that double-layered preputial dartos flaps added to tubularized incised plate urethroplasty can reduce the risk of urethrocutaneous *** aim of this study was to compare the outcomes of tubularized incised plate urethroplasty with double-layered preputial dartos flaps to with single-layered local fascial flaps in preventing urethrocutaneous fistula.A retrospective cohort study was conducted between January 2017 and December 2020 at Jordan University Hospital(Amman,Jordan).Boys who were aged between 6 months and 5 years,diagnosed with distal hypospadias,and not circumcised were *** primary outcome was the occurrence of urethrocutaneous fistula in patients who underwent tubularized incised plate urethroplasty with a double-layered fascial *** results showed a total of 163 boys with distal hypospadias;among them,116 patients underwent tubularized incised plate urethroplasty with a single-layered fascial flap,and 47 underwent tubularized incised plate urethroplasty with a double-layered fascial *** development of urethrocutaneous fistula was higher in the group receiving tubularized incised plate urethroplasty with a single-layered fascial flap than in the group receiving tubularized incised plate urethroplasty with a double-layered fascial flap after 1 month,6 months,and 12 months(6.9%vs 0,10.3%vs 0,and 5.2%vs 0,respectively),and the difference after 6 months was statistically significant(P=0.02).

关键词： distal hypospadias double-layered preputial dartos flap tubularized incised plate urethroplasty urethrocutaneous fistula

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V2V Channel Modeling at 5.2 GHz for Highway Environment

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China Communications 2022年第11期19卷 112-128页

作者： Suying Jiang Wei Wang Ibrahim rashdan School of Information Engineering Chang’an UniversityXi’an 710064China Institute of Communications and Navigation German Aerospace Center(DLR)Oberpfaffenhofen 82234Germany

To design and evaluate vehicle-to-vehicle(V2V)communication systems in intelligent transportation system(ITS),it is important to understand the propagation mechanisms and channel models of V2V *** paper aims to analyze the channel models at 5.2 GHz for the highway environment in obstructed line-of-sight(OLoS)and line-of-sight(LoS)scenarios,particularly the vehicle connectivity probability derivation based on the propagation model obtained from ***,the path loss(PL),shadow fading(SF),narrowband K-factor,and small-scale amplitude fading are *** showed that the received signal magnitude follows Rice and Weibull distribution in LoS and OLoS scenarios,***,we develop simple and low-complexity tapped delay line(TDL)models with a 10 MHz bandwidth for LoS and OLoS scenarios;in addition,we investigate the wideband K-factor,the root mean square delay spread(RMS-DS),and delay-Doppler ***,we derive the closed form connectivity probability between any two vehicles in the presence of Weibull fading channel,and analyze the effects of Weibull fading channel and traffic parameters on *** is found that Weibull fading parameter,transmit power and vehicle density have positive impact on connectivity probability,PL exponent has negative impact on connectivity probability.

关键词： channel model connectivity highway tapped delay line model vehicle-to-vehicle

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Rapid and Selective Detection of Foodborne Pathogens Using a Disposable Bio-sensing System Designed by Stepwise Antibody Immobilization on AuNPs@Cu-MOF Nanocomposite

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Journal of Analysis and Testing 2024年第4期8卷 478-492页

作者： Hend S.Magar Bahaa A.Hemdan Huda R.M.rashdan Rabeay Y.A.Hassan Applied Organic Chemistry Department National Research Centre (NRC) Water Pollution Research Department National Research Centre (NRC) Chemistry of Natural and Microbial Products Department Pharmaceutical and Drug Industries Research Institute National Research Centre (NRC) Biosensors Research Lab University of Science and Technology (UST) Zewail City of Science and Technology

There is an urgent need to provide a rapid and selective method to analyze food and water samples contaminated with Staphylococcus aureus since it is one of the most potential food and waterborne pathogens. Thus, a portable bio-sensing system and disposable bacterial-sensor chips consisted of anti-S. aureus @MPA/Au NPs-Cu-MOF@SPE were designed, fabricated, and applied for 20-min-based analysis of food and water samples. In this regard, screen-printed electrodes（SPEs） were functionalized with a new synthesized copper-metal organic framework（Cu-MOF） conjugated with gold nanoparticles（Au NPs） to eff ectively promote the chemical immobilization of the bio-receptor（anti-S. aureus antibody） onto the sensor matrix using the mercaptopropionic acid（MPA） as a chemical cross-linker. Subsequently, parameters aff ecting the bacterial-sensing effi-cacy were studied and optimized. Accordingly, high sensitivity was obtained with a wide dynamic linear range from 1 × 10 to 1 × 10～7 colony forming units per milliliter（CFU/m L） with correlation coefficient（ R2） of 0.990, limit of detection and limit of quantification of 0.132 CFU/m L, and 0.440 CFU/m L, respectively. High selectivity was provided since no electrochemical signals were obtained from various non-targeting strains of common pathogens, including the Pseudomonas aeruginosa, Escherichia coli, Salmonella enterica, Streptococcus mutans, and Enterococcus faecalis. Eventually, the newly developed handheld bacterial-sensing platform was applied for the rapid analysis of S. aureus in food and water samples.

关键词： Bacterial pathogens Electrochemical biosensors Food Analysis Immunosensors Nanostructures Self-assembled monolayer

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Development of Different Strategies for the Clean-Up of Polychlorinated Biphenyls (PCBs) Congeners Using Pressurized Liquid Extraction

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Journal of Environmental Protection 2013年第1期4卷 99-107页

作者： Amal Al-rashdan Murad I. H. Helaleh Kuwait Institute for Scientific Research Deputy Director General Office for Research Safat Kuwait

The extracted fish samples (w/w) using pressurized liquid extraction (PLE) were cleaned up by applying different adsorbent materials such as: combination of acidic/ basic silica and alumina, florisil, and silica gel either alone or in combination with another sort of sorbent. Different solvents such as hexane (H), dichloromethane (DCM), with different compositions were used to elute the PCBs target compounds from the spiked fish samples. Overall the mean percentage recoveries for all PCBs congeners using PLE were ranging from 78.6% to 98.7%;from 79.4% to 91.8%;from 65.8% to 104.5% and from 82.4% to 100.9% for cases A, B, C, D and E, respectively. However, the overall mean percentage recoveries for the 13C-PCBs surrogate including: 101, 138, 153, 180 and 209 were ranging from 88.2% to 97.6%;from 79.4% to 90.2%, from 88.3% to 96.4%, from 79.8% to 90.4% and from 83.9% to 95.9%, for cases A, B, C, D and E, respectively. The limits of detection of the proposed method were varied from 0.01 to 0.28 ng/g (w/w) for different PCBs congeners. The proposed method has linear dynamic range from 21.5 ng/g to 109 ng/g. This method was applied to fish samples for the determination of the target PCBs components.

关键词： Polychlorinated Biphenyls (PCBs) Pressurized Liquid Extraction (PLE) Adsorbent Materials Gel Permeation Chromatography (GPC) Negative Chemical Ionization (NCI) Marine Sample

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