8 results on '"Bokhari D"'
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2. Terminal ballistics of 7.62 mm armour piercing projectiles against spaced, oblique RHA plates
- Author
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Bokhari, D., Teagle, M., and Ian Horsfall
- Abstract
Spacing and obliquity, when used together, are known to provide one of the most weight efficient solutions for armor protection. Although this configuration has been widely used over almost 100 years there is little quantitative or design data for such systems. In the present study a series of tests were performed using a steel-cored 7.62mm bullet (DAG 7.62x51) against RHA plates of varying thicknesses, spacing and obliquity of the front plate. This work showed that front plate should be substantially thinner than the rear, a ratio of 0.48:1 gave the best results. The highest mass efficiency (2.00) was for a large spacing (400mm) but this could be reduced to 50mm with only a 17% reduction in ballistic efficiency if a slightly more oblique front plate was used.
- Published
- 2016
3. PROBIOTIC CHARACTERIZATION OF THE LACTOBACILLUS ISOLATES FROM BUFFALO VAGINA.
- Author
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Bokhari, D. M., Khan, H., Riaz, M. N., and Yunus, A. W.
- Subjects
- *
LACTOBACILLUS , *PROBIOTICS , *WATER buffalo , *NUCLEOTIDE sequencing , *HOMOLOGY (Biology) - Abstract
This study was conducted to screen and select the potential probiotic bacterial strains from buffalo vagina. Five isolates were identified biochemically and at molecular level. To determine probiotic ability, tolerance to acidic conditions and bile concentration, and antibacterial activity against two indicator pathogens Salmonella typhii and Escherichia coli were tested. PCR amplification of the isolates using Lactobacillus specific primer was carried out followed by sequencing of amplified region. The results indicated that all of the isolates, belonged to different species of Lactobacillus, sharing up to 99% homology with sequences of different Lactobacillus species in the NCBI database. Three isolates were identified as Lactobacillus gasseri and one each as Lactobacillus bombicola and Lactobacillus johnsonii using specific gene sequence analysis. All of the isolates survived at pH 2 and 0.3% bile concentration and were also found to be active against S. typhii and E. coli indicating their potential use as probiotic strains. [ABSTRACT FROM AUTHOR]
- Published
- 2017
4. Mosaic Turner Syndrome With Multiple Spontaneous Pregnancies: A Case Report.
- Author
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Altalib A, AlSulmi E, Bokhari D, Alhalal Z 2nd, Alismail M, and Alzayyat R
- Abstract
Turner syndrome (TS) is an abnormality of the X chromosome affecting females. This genetic defect causes infertility in most cases, but less commonly in patients with the mosaic form of Turner syndrome. In the rare event of a pregnancy, it usually leads to maternal and fetal complications, including miscarriage. In this study, we report a case of mosaic Turner syndrome (45,X/46,XX) in a 34-year-old female who presented to our outpatient clinic with a two-year history of secondary infertility following nine previous spontaneous pregnancies (SP). Her obstetric history showed two successful healthy pregnancies, seven first-trimester miscarriages, one intrauterine fetal demise (IUFD), and one infant death at six months of age. Cases of pregnancy in mosaic Turner syndrome patients are limited and have poor pregnancy outcomes; here, we aim for our case to contribute to the improvement of pregnancy outcomes in such patients., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Altalib et al.)
- Published
- 2024
- Full Text
- View/download PDF
5. Male breast abscess: A rare entity.
- Author
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Alzayyat R, Bokhari D, Almuhanna A, and Al-Maghrebi D
- Abstract
Breast abscess in males is a rare condition, which accounts for 1%-3% of all documented breast diseases. Males with certain risk factors may develop a breast abscess. The ultrasonographic, mammographic, and pathological characteristics of this case will be highlighted in the report. A 51-year-old morbidly obese Saudi male who is a 160-pack-years smoker presented to our surgical clinic complaining of a right breast mass that presented a long time ago and was changing in size. The mass was painless until 5 days prior to presentation. On physical examination, a firm nonmobile 3 × 4 cm mass was felt at 10-12-o'clock, 1 cm away from the nipple. A bilateral X-ray mammogram and ultrasound were performed with fine needle aspiration and culture. The mammogram of the right breast showed a well-circumscribed subareolar mass with equal density, and it was also associated with overlying skin thickening and relative breast parenchymal edema. The fine needle aspiration grossly showed yellowish-green turbid content followed by turbid blood. The anaerobic culture results showed the gram-positive cocci, Finegoldia Magna. The patient was then instructed to take an antibiotic accordingly and return after 1 week. Fine needle aspiration and culture were performed again after antibiotics and grossly showed 2-3 cc of pus without any growth in culture. Male breast disorders are typically benign, with gynecomastia being the most prevalent, and malignancy being the most serious despite its rarity. Breast abscesses are a challenging clinical condition, and radiologists have a pivotal role in evaluation and follow-up of these lesions., (© 2023 The Authors.)
- Published
- 2023
- Full Text
- View/download PDF
6. Improved diagnostic confidence and accuracy of pediatric elbow fractures with digital tomosynthesis.
- Author
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Zapala MA, Livingston K, Bokhari D, Phelps AS, Courtier JL, Ma C, Seo Y, and MacKenzie JD
- Subjects
- Adolescent, Child, Child, Preschool, Female, Humans, Infant, Male, Reproducibility of Results, Retrospective Studies, Sensitivity and Specificity, Elbow diagnostic imaging, Fractures, Bone diagnostic imaging, Tomography, X-Ray Computed methods, Elbow Injuries
- Abstract
Background: Pediatric elbow fractures are common but remain challenging to accurately diagnose. Digital tomosynthesis is a technique that has shown promise in difficult adult fracture patterns but has not been formally studied in the pediatric population., Objective: To assess the added value of digital tomosynthesis on the detection and diagnostic confidence of pediatric elbow fractures., Materials and Methods: A retrospective study was performed between January 2016 and December 2017 in pediatric patients (≤18 years) to assess the ability of conventional elbow radiographs and digital tomosynthesis to detect elbow fractures. One hundred twenty-one pediatric patients with concern for pediatric elbow trauma (64 males, 57 females; mean age: 8.1 years, range: 1 year to 17 years) were imaged with both conventional elbow radiographs and digital tomosynthesis. Two blinded pediatric radiologists identified fractures and indicated their diagnostic confidence. Observer agreement was assessed with Cohen's Kappa coefficient and a nonparametric Wilcoxon rank sum test was used to compare the degree of diagnostic confidence between standard radiographs alone and standard radiographs with digital tomosynthesis. McNemar's test was used to assess the difference in the rate of fracture detection between the two methods and sensitivity, specificity, precision, accuracy and diagnostic odds ratios were calculated., Results: Compared with standard radiographs alone, standard radiographs with digital tomosynthesis improved inter-rater agreement, sensitivity, specificity, accuracy, precision and the diagnostic odds ratio for fracture detection and increased diagnostic confidence (Rater 1: P=0.01, Rater 2: P=0.003)., Conclusion: The addition of digital tomosynthesis with conventional elbow radiographs improves diagnostic confidence and performance for the detection of pediatric elbow fractures.
- Published
- 2020
- Full Text
- View/download PDF
7. Distribution of scholarly publications among academic radiology departments.
- Author
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Morelli JN and Bokhari D
- Subjects
- Academic Medical Centers, Bibliometrics, Chi-Square Distribution, Humans, Journal Impact Factor, United States, Biomedical Research statistics & numerical data, Publications statistics & numerical data, Radiology Department, Hospital
- Abstract
Purpose: The aim of this study was to determine whether the distribution of publications among academic radiology departments in the United States is Gaussian (ie, the bell curve) or Paretian., Methods: The search affiliation feature of the PubMed database was used to search for publications in 3 general radiology journals with high Impact Factors, originating at radiology departments in the United States affiliated with residency training programs. The distribution of the number of publications among departments was examined using χ(2) test statistics to determine whether it followed a Pareto or a Gaussian distribution more closely., Results: A total of 14,219 publications contributed since 1987 by faculty members in 163 departments with residency programs were available for assessment. The data acquired were more consistent with a Pareto (χ(2) = 80.4) than a Gaussian (χ(2) = 659.5) distribution. The mean number of publications for departments was 79.9 ± 146 (range, 0-943). The median number of publications was 16.5. The majority (>50%) of major radiology publications from academic departments with residency programs originated in <10% (n = 15 of 178) of such departments. Fifteen programs likewise produced no publications in the surveyed journals., Conclusion: The number of publications in journals with high Impact Factors published by academic radiology departments more closely fits a Pareto rather than a normal distribution., (Copyright © 2013 American College of Radiology. Published by Elsevier Inc. All rights reserved.)
- Published
- 2013
- Full Text
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8. Abrogation of the twin arginine transport system in Salmonella enterica serovar Typhimurium leads to colonization defects during infection.
- Author
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Reynolds MM, Bogomolnaya L, Guo J, Aldrich L, Bokhari D, Santiviago CA, McClelland M, and Andrews-Polymenis H
- Subjects
- Animals, Arginine metabolism, Cells, Cultured, Macrophages microbiology, Mice, Mice, Inbred BALB C, Mutation, Protein Transport, Salmonella typhimurium cytology, Bacterial Proteins physiology, Cell Movement genetics, Membrane Transport Proteins physiology, Salmonella Infections, Animal microbiology, Salmonella typhimurium genetics
- Abstract
TatC (STM3975) is a highly conserved component of the Twin Arginine Transport (Tat) systems that is required for transport of folded proteins across the inner membrane in gram-negative bacteria. We previously identified a ΔtatC mutant as defective in competitive infections with wild type ATCC14028 during systemic infection of Salmonella-susceptible BALB/c mice. Here we confirm these results and show that the ΔtatC mutant is internalized poorly by cultured J774-A.1 mouse macrophages a phenotype that may be related to the systemic infection defect. This mutant is also defective for short-term intestinal and systemic colonization after oral infection of BALB/c mice and is shed in reduced numbers in feces from orally infected Salmonella-resistant (CBA/J) mice. We show that the ΔtatC mutant is highly sensitive to bile acids perhaps resulting in the defect in intestinal infection that we observe. Finally, the ΔtatC mutant has an unusual combination of motility phenotypes in Salmonella; it is severely defective for swimming motility but is able to swarm well. The ΔtatC mutant has a lower amount of flagellin on the bacterial surface during swimming motility but normal levels under swarming conditions.
- Published
- 2011
- Full Text
- View/download PDF
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