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Mapping the global research landscape on nutrition and the gut microbiota:Visualization and bibliometric analysis

World Journal of Gastroenterology 2022年第25期28卷 2981-2993页

作者： Sa'ed H Zyoud Muna Shakhshir Amani S Abushanab Samah W al-Jabi Amer Koni Moyad Shahwan Ammar abdulrahman Jairoun Adham Abu Taha Department of Clinical and Community Pharmacy College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Poison Control and Drug Information Center College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Clinical Research Centre An-Najah National University HospitalNablus 44839Palestine Department of Nutrition An-Najah National University HospitalNablus 44839Palestine Division of Clinical Pharmacy Hematology and Oncology Pharmacy DepartmentAn-Najah National University HospitalNablus 44839Palestine Department of Pharmacy Ajman UniversityAjman 346United Arab Emirates Centre of Medical and Bio-allied Health Sciences Research Ajman UniversityAjman 346United Arab Emirates Department of Health and Safety Dubai MunicipalityDubai 67United Arab Emirates Department of Biomedical Sciences College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Department of Medicine College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine

BACKGROUND Nutrition is a significant modifiable element that influences the composition of the gastrointestinal microbiota,implying the possibility of therapeutic diet methods that manipulate the composition and diversity of the *** To overview research papers on nutrition and gut microbiota and determines the hotspots in this field at the global *** Scopus and Reference Citation Analysis were used to construct a bibliometric *** was decided to create bibliometric indicators and mapping as in most previous studies.2012 through 2021 served as the study's *** A total of 5378 documents from the Scopus database were selected for *** all retrieved studies,78.52%were research papers(n=4223),followed by reviews(n=820;15.25%).China ranked first with a total number of articles of 1634(30.38%),followed by the United States in second place with a total number of articles of 1307(24.3%).In the last decade,emerging hotspots for gut microbiota and nutrition research included"gut microbiota metabolism and interaction with dietary components","connection between the gut microbiota and weight gain",and"the influence of high-fat diet and gut microbiota on metabolic disorders".CONCLUSION This is the first thorough bibliometric analysis of nutrition and gut microbiota publications conducted on a global *** of the association between nutrition/diet and the gut microbiota is still in its infancy and will be expanded in the ***,according to recent trends,the"effect of gut microbiota and high-fat diet on metabolic disorders"will be an increasing concern in the future.

关键词： Gut microbiota Microbiome Nutrition Diet Bibliometric Scopus VOSviewer

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Flow Regimes in Bubble Columns with and without Internals: A Review

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Fluid Dynamics & Materials Processing 2024年第2期20卷 239-256页

作者： Ayat N.Mahmood Amer A.abdulrahman Laith S.Sabri Abbas J.Sultan Hasan Shakir Majdi Muthanna H.al-Dahhan Department of Chemical Engineering University of Technology-IraqBaghdadIraq Chemical and Petroleum Industries Engineering Department Al-Mustaqbal University CollegeBabylonIraq Department of Chemical and Biochemical Engineering Missouri University of Science and TechnologyRollaUSA

Hydrodynamics characterization in terms ofﬂow regime behavior is a crucial task to enhance the design of bubble column reactors and scaling up related *** review presents recent studies on the typicalﬂow regimes established in bubble *** effort is also provided to introduce relevant deﬁnitions pertaining to thisﬁeld,namely,that of“void fraction”and related(local,chordal,cross-sectional and volumetric)*** studies involving different parameters that affect design and operating conditions are also discussed in *** the second part of the review,the attention is shifted to cases with internals of various types(perfo-rated plates,bafﬂes,vibrating helical springs,mixers,and heat exchanger tubes)immersed in the bubble *** is shown that the presence of these elements has a limited inﬂuence on the global column ***,they can make the homogeneousﬂow regime more stable in terms of transition gas velocity and transi-tion holdup *** last section is used to highlight gaps which have not beenﬁlled yet and future directions of investigation.

关键词： Hydrodynamics ﬂow regime bubble column heat-exchanging internals

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Experimental Study of Heat Transfer Enhancement in Solar Tower Receiver Using Internal Fins

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Computers, Materials & Continua 2021年第8期68卷 1693-1711页

作者： Hashem Shatnawi Chin Wai Lim Firas Basim Ismail abdulrahman aldossary Education Sector in Jubail Jubail Technical InstituteJubail Industrial City31961Saudi Arabia Mechanical Engineering Department College of EngineeringUniversiti Tenaga NasionalKajang43000SelangorMalaysia Power Generation Unit Institute of Power Engineering(IPE)Universiti Tenaga NasionalKajang43000SelangorMalaysia

The receiver is an important element in solar energy *** principal receiver’s tubes in power plants are devised to work under extremely severe conditions,including excessive heat *** of the tube’s circumference is heated whilst the other half is *** study aims to improve the heat transfer process and reinforce the tubes’structure by designing a new receiver;by including longitudinal fins of triangular,circular and square *** research is conducted experimentally using Reynolds numbers ranging from 28,000 to 78,*** fins have demonstrated the best improvement for heat *** Reynolds number value near 43,000 Nusselt number(Nu)is higher by 3.5%and 7.5%,sequentially,compared to circular and square tube fins,but varies up to 6.5%near Re=*** lowest friction factor is seen in a triangular fin receiver;where it deviates from circular fins by 4.6%,and square fin tubes by 3.2%.Adding fins makes the temperature decrease gradually,and in the case of no fins,the temperature gradient between the hot tube and water drops sharply in the planed tube by 7%.

关键词： Solar tower power external receiver longitudinal internal fins thermocouples temperature gradient

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Fast Switching Fractional-N Frequency Synthesizer Architecture Using TDTL

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International Journal of Communications, Network and System Sciences 2009年第9期2卷 879-887页

作者： Mahmoud A. al-QUTAYRI Saleh R. al-ARAJI abdulrahman al-HUMAIDAN 不详

This paper presents an efficient indirect fractional frequency synthesizer architecture based on the time delay digital tanlock loop. The indirect type frequency synthesis systems incorporate a low complexity high performance adaptation mechanism that enables them to remain in a locked state following the division process. The performance of the proposed fractional-N synthesizer under various input conditions is demonstrated. This includes sudden changes in the system input frequency as well as the injection of noise. The results of the extensive set of tests indicate that the fractional-N synthesizer, proposed in this work, performs well and is capable of achieving frequency divisions with fine resolution. The indirect frequency synthesizer also has a wide locking range and fast switching response. This is reflected by the system ability to regain its lock in response to relatively large variations in the input frequency within a few samples. The overall system performance shows high resilience to noise as reflected by the mean square error results.

关键词： Fractional Synthesizer Time Delay Tanlock Loop Register Adaptation

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Resolution of an esophageal leak and posterior gastric wall necrosis with esophageal self-expandable metal stents

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World Journal of Gastroenterology 2013年第40期19卷 6931-6933页

作者： Majid A almadi abdulrahman M aljebreen Fahad Bamihriz Division of Gastroenterology King Khalid University Hospital King Saud University Riyadh 11461Saudi Arabia Division of Gastroenterology The McGill University Health Center Montreal General Hospital McGill UniversityMontrealH3G 1A4Canada Division of Surgery King Khalid University HospitalKing Saud UniversityRiyadh 11461Saudi Arabia

The use of weight reduction surgeries has increased over the years with a higher proportion of these surgeries being sleeve gastrectomies,this has been associated with some complications including staple line *** report a 32-year-old male who had undergone a laparoscopic gastric band surgery and subsequently a laparoscopic sleeve gastrectomy,this was complicated by both an staple line leak at the gastroesophageal junction as well as a large(> 4 cm) posterior gastric wall defect due to gastric wall necrosis. We used two co-axially inserted self-expandable stents(SEMS) in the management of this patient,5 stents were used over repeated endoscopy sessions and 20 wk. Both defects had resolved without the need for surgical *** is the first reported case were SEMS are used for both a staple line leak as well as a gastric wall *** also review the literature on the use of SEMS in the management of leaks post weight reduction surgeries.

关键词： Stents Self-expandable metal stents Laparoscopic sleeve gastrectomy Staple line leak Esophageal leak Gastric necrosis

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Validation of a Method for Characterization of Ethanol in Water by HS-GC-FID to Serve the Traceability of Halal Measurements

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Green and Sustainable Chemistry 2024年第2期14卷 17-28页

作者： Adel B. Shehata abdulrahman R. al Askar Mohammed A. al Rasheed abdulrahman M. al Zahrany Fahd A. al Kharraa Sowailem A. al Sowailem Chemistry Department/National Measurement and Calibration Center (NMCC) Saudi Standards Metrology and Quality Organization (SASO) Riyadh Kingdom of Saudi Arabia

The determination of the ethanol content in food products is of fundamental importance for Halal certification. In this work, an analytical method for the determination of ethanol in water by headspace gas chromatography with flame ionization detector (HS-GC-FID) has been developed and validated for the use in characterization of ethanol reference materials. The validation study was carried out in the linear calibration range 100 - 1500 mg/kg using the NIST SRM 2900, nominal 95.6%. The studied performance characteristics of the method were the limit of detection, LOD, the limit of quantification LOQ, selectivity, linearity, precision, recovery and bias. The validation results showed that the method is selective, precise, accurate and free from any significant bias. The LOD and LOQ were 1.27 and 3.86 mg/kg respectively and the estimated expanded uncertainty was 2% indicating that the method is fit for the purpose of certification of ethanol in water reference materials.

关键词： Ethanol HS-GC-FID Validation Linearity Precision Bias

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Sedated vs unsedated colonoscopy:A prospective study

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World Journal of Gastroenterology 2014年第17期20卷 5113-5118页

作者： abdulrahman M aljebreen Majid A almadi Felix W Leung Gastroenterology Division King Khalid University HospitalKing Saud UniversityRiyadh 11461Saudi Arabia Gastroenterology Division McGill University Health Center McGill University MontrealQuebec H3G 1A4Canada Research and Medical Services Sepulveda Ambulatory Care CenterVeterans Affairs Greater Los Angeles Healthcare Systemand David Geffen School of Medicine at UCLALos AngelesCaliforniaCA 91343United States

AIM:To compare sedated to unsedated colonoscopy in terms of duration,pain and the patient’s willingness to repeat the ***:Consecutive patients who underwent colonoscopies over a 2-year period were invited to *** patients who were to undergo our endoscopy unit were offered sedation with standard intravenous sedatives and analgesics,or an unsedated colonoscopy was *** details were *** patient anxiety level prior to the procedure,time to reach the cecum,total discharge time,patient and endoscopist pain assessments,satisfaction after the examination and the patient’s willingness to return for the same procedure in the future were ***:Among the 403 observed patients,more males were observed in the unsedated group(66.2%vs 55.2%,P=0.04).Additionally,the unsedated group patients were less anxious prior to the procedure(5.1vs 6.0,Palso comparable(12.2 min vs 11.8 min);however,the total discharge times were shorter in the unsedated group(20.7 min vs 83.0 min,Pal colonoscopies if a repeated procedure is needed.

关键词： Sedation Colonoscopy Unsedated Screening Endoscopy

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Clopidogrel in ischemic heart disease: A critical appraisal

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Health 2013年第3期5卷 465-468页

作者： Mohammed A. al-Otaiby abdulrahman M. al-Moghairi Adult Cardiology Department Prince Sultan Cardiac Center (PSCC) Riyadh Saudi Arabia Adult Cardiology Department Prince Sultan Cardiac Center (PSCC) Riyadh Saudi Arabia.

Aspirin and clopidogrel are the commonest dual antiplatelet agents being used in the secondary prevention of cardiovascular disease. In high risk patients with coronary heart disease, the use of aspirin was associated with a significant risk reduction of myocardial infarction, stroke and vascular death. The use of clopidogrel alone was slightly superior to aspirin, and associated with reduced risk of vascular death, ischemic stroke and myocardial infarction. Dual antiplatelet therapy has been well studied in patients with acute coronary syndrome and those undergoing percutaneous coronary intervention (PCI). In patients with stable coronary heart disease or multiple risk factors the combination of clopidogrel plus aspirin was not significantly more effective than aspirin alone in reducing MI, stroke or death from cardiovascular causes.

关键词： Clopidogrel Ischemic Heart Disease Thienopyridine Platelets Inhibition

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Overflow phenomenon in serum lutein after supplementation:a systematic review supported with SNPs analyses

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International Journal of Ophthalmology(English edition) 2021年第7期14卷 1114-1119页

作者： abdulrahman M alharbi Mohammed A Kilani Tos TJM Berendschot Clinical Biochemistry Unit Department of Pathology and Laboratory MedicineCollege of MedicineKing Saud UniversityRiyadh 11451Saudi Arabia Public Health Authority of Saudi Arabia Riyadh 13352Saudi Arabia University Eye Clinic Maastricht University Medical CenterMaastricht 6229HXThe Netherlands

Lutein,a type of carotenoids,is found to delay the onset and progression of age-related macular degeneration(AMD).Several lutein supplementation studies showed that after an initial increase,lutein serum levels demonstrated a subsequent decrease despite continuous *** this systematic literature review,this obscure phenomenon was tried to be *** subsequent drop in lutein levels was postulated due to down-regulation of lutein receptors scavenger receptor class B typeⅠ(SR-BI)in the gastrointestinal tract,upregulation of lutein degrading enzymeβ-carotene dioxygenase(BCDO2),or perhaps a combination of *** single nucleotides polymorphisms(SNPs)that could have influence on the occurrence of this *** date,an exact scientific explanation for this phenomenon has not been *** research is needed to investigate this phenomenon in depth to reach an irrefutable explanation,giving that lutein is proven to be effective in delaying the onset and progression of AMD and its metabolism in the human body becomes of equal importance.

关键词： lutein macular degeneration carotenoids xanthophylls β-carotene dioxygenase scavenger receptor class B typeⅠ

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Effect of Carbon Dioxide Therapy on Diabetic Foot Ulcer

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Journal of Diabetes Mellitus 2015年第4期5卷 284-289页

作者： Naeem Shalan abdulrahman al-Bazzaz Israa al-Ani Fadi Najem Mohammad al-Masri Faculty of Pharmacy and Medical Sciences Al-Ahliyya Amman University Amman Jordan

Ulceration of diabetic foot represents one of the most concerning complications associated with uncontrolled blood sugar in diabetes mellitus. The aim of this study is to evaluate the condition of twenty-two diabetic patients with different degrees of ulceration in their feet after daily secessions of carbon dioxide therapy. Blood flow to the affected foot was measured by Doppler;also the size, color, degree of ulceration and sensation of the ulcerative area were all evaluated. Results showed improvement of blood flow to the affected foot as well as improvement in the sensation and color of the ulcerative area. It was concluded that carbon dioxide therapy of diabetic foot was promising and needed thorough investigation to be brought widely into application.

关键词： Diabetic Foot Ulcer Carbon Dioxide Therapy

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