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Dissolved Organic Matter Features of Three Adjacent Eastern Mediterranean Urbanized Watersheds

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Open Journal of Modern Hydrology 2024年第3期14卷 153-173页

作者： Nour abboud Elias Michel Maatouk Zeinab Matar Veronique Kazpard Research and Analysis Platform for Environmental Sciences (PRASE) Doctoral School of Sciences and Technology (EDST) The Lebanese University Rafic Hariri Campus Hadat Lebanon Laboratory of Georessources Geosciences and Environment (L2GE) Faculty of Sciences The Lebanese University Fanar Lebanon Department of Earth and Life Sciences Faculty of Sciences The Lebanese University Hadat Lebanon

Landscape urbanization broadly affects ecosystems in coastal watersheds, but, until now, the influence of nonpoint source urban inputs on dissolved organic matter (DOM) amount, composition, and source is poorly understood. To understand how DOM composition varied with urbanization, fluorescence excitation-emission matrices (EEMs) were determined for urban and non-urban waters from upstream to downstream sites along three adjacent coastal watersheds that flow into the Mediterranean Sea. Two humic DOM fluorescent components (humic-like and fulvic-like peaks) and two proteinic components (tyrosine-like and tryptophane-like peaks) were identified by EEM fluorescence. The results indicated that urbanization had an important influence on DOM concentration and composition, with urban waters having a high degree of DOM variation due to different land uses surrounding each body of water. Urban waters show a higher DOM fluorescence index (FI), the highest fluorescence intensity of protein-like manifested also by BIX values, and a lower value of the humification index (HIX) than non-urban waters which were dominated by allochthonous inputs. In addition, the EEM was compared in dry and wet season where higher DOM amounts and FI appeared in summer due to autochthonous production coming from algae growth compared to allochthonous input from rainfall dominated in wet season. The concentration of DOC increased from upstream to downstream for the three rivers, especially Beirut River. The increase in DOC values was observed in both dry and wet seasons by 39 and 19 times respectively compared to upstream (0.93 - 0.91 mgC/L).

关键词： Dissolved Organic Matter DOM EEM Fluorescence Spectroscopy Autochthonous/Allochthonous DOM Urbanization Upstream/Downstream Wet/Dry Season

Will artificial intelligence reach any limit in gastroenterology?

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Artificial Intelligence in Gastroenterology 2024年第2期5卷 1-9页

作者： Joseph Bou Jaoude Rose Al Bacha Bassam abboud Department of Gastroenterology Levant HospitalBeirut 166830Lebanon Department of General Surgery Geitaoui HospitalFaculty of MedicineLebanese UniversityLebanonBeirut 166830Lebanon

Endoscopy is the cornerstone in the management of digestive *** the last few decades,technology has played an important role in the development of this field,helping endoscopists in better detecting and characterizing luminal ***,despite ongoing advancements in endoscopic technology,the incidence of missed pre-neoplastic and neoplastic lesions remains high due to the operator-dependent nature of endoscopy and the challenging learning curve associated with new *** intelligence(AI),an operator-independent field,could be an invaluable *** can serve as a“second observer”,enhancing the performance of endoscopists in detecting and characterizing luminal *** utilizing deep learning(DL),an innovation within machine learning,AI automatically extracts input features from targeted endoscopic *** encompasses both computer-aided detection and computer-aided diagnosis,assisting endoscopists in reducing missed detection rates and predicting the histology of luminal digestive *** applications in clinical gastrointestinal diseases are continuously expanding and evolving the entire digestive *** all published studies,real-time AI assists endoscopists in improving the performance of non-expert gastroenterologists,bringing it to a level comparable to that of *** development of DL may be affected by selection *** have utilized different AI-assisted models,which are *** the future,algorithms need validation through large,randomized ***,AI has no limit to assist endoscopists in increasing the accuracy and the quality of endoscopic ***,practically,we still have a long way to go before standardizing our AI models to be accepted and applied by all gastroenterologists.

关键词： Artificial intelligence Digestive tract Gastroenterology Gastroscopy Coloscopy

Surface Water Processes in Coping with Anthropogenic Impact in a Coastal Eastern Mediterranean Region

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Open Journal of Modern Hydrology 2024年第2期14卷 69-86页

作者： Nour abboud Zeinab Matar Elias Maatouk Véronique Kazpard Research and Analysis Platform for Environmental Sciences (PRASE) Doctoral School of Sciences and Technology (EDST) Lebanese University Hadat Lebanon Laboratory of Georessources Geosciences and Environment (L2GE) Faculty of Sciences Lebanese University Fanar Lebanon Department of Earth and Life Sciences Faculty of Sciences Lebanese University Hadat Lebanon

Rivers are progressively being exposed to increased anthropogenic pollution stresses that are undermining their designated uses and affecting sensitive coastal areas. In this study, three adjacent eastern Mediterranean coastal rivers, Ibrahim, Kaleb and Beirut, were evaluated. Water quality samples were collected in dry and wet seasons from different sampling sites along the river from the source to the outlet which represent a gradient of increased urbanization. The spatiotemporal variability of the physio-chemical properties, heavy metals (Zn, Pb, Cu, Cr, and Cd) and organic matter (DOC) were statistically analyzed to better understand the contribution of point and nonpoint pollution sources. The three rivers (Beirut, Kaleb and Ibrahim) show a similar behavior in calcium and carbonate alkalinity due to the carbonate mineral weathering effect, so they are of calcium bicarbonate type due to their calcareous geological nature. The speciation of anions was affected by temporal variation. Moreover, it is obvious that the Beirut River has a different behavioral characteristic where the water is a sulfate type water with a preferable metal-OM complexation mainly with lead, zinc and copper, whereas Kaleb and Ibrahim are considered to be of a nitrate phosphate type with a preferable metal inorganic complexation, especially copper, that has a consistent behavior in both types of waters. This difference is attributed to the urbanization effect highly impacting the Beirut River.

关键词： Anions/Cations Metals DOC Complexation Coastal Rivers Spatiotemporal Variability

Hepatocellular carcinoma national burden across different geographical regions in the United States between 2001 and 2020

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World Journal of Methodology 2024年第4期14卷 110-120页

作者： Yazan abboud Raj Malhotra Muhammad Hassaan Arif Maan Anna Mathew Ibrahim abboud Chun-Wei Pan Saqr Alsakarneh Fouad Jaber Islam Mohamed David Kim Nikolaos T Pyrsopoulos Department of Internal Medicine Rutgers New Jersey Medical SchoolNewarkNJ 07103United States University of California Riverside School of Medicine RiversideCA 92521United States Department of Internal Medicine John H Stroger Hospital of Cook CountyChicagoIL 60612United States Department of Internal Medicine University of Missouri-Kansas CityKansasMO 64108United States Division of Gastroenterology and Hepatology Rutgers New Jersey Medical SchoolNewarkNJ 07101United States

BACKGROUND While prior data showed an increasing incidence of hepatocellular carcinoma(HCC)in the United States,there are limited comprehensive and comparative data on the geographical variations of HCC trends in different demographicspecific *** To evaluate sex and age-specific incidence rates and time trends in different geographical regions in the United *** Age-adjusted HCC incidence rates were collected from the United States Cancer Statistics(USCS)database which covers approximately 98%of the population in the United *** rates were stratified by sex,age,and geographical *** percentage change(APC)and average APC(AAPC)were estimated using Joinpoint Regression.A pairwise comparison was conducted between sex-specific *** There were 467344 patients diagnosed with HCC in the United States in the USCS database between 2001 and *** rates and trends varied by geographical *** looking at the West region(115336 patients),incidence rates of HCC were overall increasing and also increasing in older ***,when evaluating younger adults,HCC incidence rates decreased in men but not in women with a sex-specific absolute AAPC-difference of 2.15(P=0.005).When evaluating the Midwest region(84612 patients),similar results were *** incidence rates were increasing in the overall population and in older adults as well,they were decreasing in younger men but not in women with a sex-specific absolute AAPC-difference of 1.61(P<0.001).For the Northeast region(87259 patients),the analysis showed similar results with decreasing HCC incidence rates in younger men but not counterpart women(Sex-specific AAPC-difference=3.26,P<0.001).Lastly,when evaluating the south(180137 patients),the results were also decreasing in younger men but not in women(Sex-specific AAPC-difference=2.55,P<0.001).CONCLUSION Nationwide analysis covering around 98%of the United States population shows an increasing incidence of HCC across all

关键词： Hepatocellular carcinoma Incidence Epidemiology Health disparity Geography

On Word Equations Originated from Discrete Dynamical Systems Related to Antisymmetric Cubic Maps with Some Applications

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Acta Mathematica Sinica,English Series 2018年第11期34卷 1663-1676页

作者： Elias abboud The Academic Arab Institute Faculty of EducationBeit Berl College

In this article, we solve some word equations originated from discrete dynamical systems related to antisymmetric cubic map. These equations emerge when we work with primitive and greatest words. In particular, we characterize all the cases for which （β1β1） = （β2β） where β1 and β2 are the greatest words in 〈〈β31〉〉 and 〈〈β32〉〉 of M（n）.

关键词： Word equation broken alternating word primitive word greatest word parity-lexicographic order

Cardiopulmonary Resuscitation Induced Consciousness—A Case Report from United Arab Emirates

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Open Journal of Emergency Medicine 2022年第2期10卷 80-84页

作者： Youssef Saleem abboud Sreya Varanasi Fakeeh University Hospital Dubai UAE

Cardiopulmonary resuscitation-induced consciousness (CPRIC) is increasingly being reported across the world. High quality cardiopulmonary resuscitation (CPR) may transiently generate sufficient cerebral perfusion to cause signs of consciousness during CPR which disappears on cessation of CPR. Here we present the case of a 56-year-old male presenting with myocardial infarction that led to cardiac arrest and initiation of CPR during which he showed signs of consciousness. This led to multiple disruptions in delivering high quality CPR. CPR providers are often unaware and inexperienced in managing these patients. However, CPRIC has an association with improved survival. Hence, more research needs to be conducted in this field and guidelines need to be developed to better manage CPRIC.

关键词： Consciousness Cardiopulmonary Resuscitation Spontaneous Movement

A Case of Euglycemic Diabetic Ketoacidosis in Patient with Type 2 DM

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Open Journal of Emergency Medicine 2023年第4期11卷 174-179页

作者： Lamiz Tannouri Shahinaz Gouda Youssef abboud Department of Emergency Soliman Fakeeh University Hospital Dubai United Arab Emarites

Diabetic ketoacidosis (DKA) can cause significant morbidity and mortality in patient with both type 1 and type 2 diabetes mellitus. A subset of DKA cases termed euglycemic diabetic ketoacidosis (EDKA) is characterized by euglycemic (<200 mg/dl), high anion gap metabolic acidosis, and increased plasma ketone concentration. This clinical syndrome is primary related to a general state of starvation, resulting in the development of ketosis while maintaining normoglycemia. It can lead to severe complication, such as extreme dehydration, altered mental status and coma. Early recognition and treatment are essential to avoid this life-threatening complication. EDKA represents approximately 2.6% to 3.2% of total DKA admissions, making it a rare condition. In this case report, a male patient was diagnosed with type 2 DM, 1 week prior to his symptoms and admission in hospital. Despite normal glucose levels at the time of presentation to the ED, he displayed severe acidemia and ketonemia, and was diagnosed with EDKA.

关键词： Euglycemic DKA Glucose Level Acidosis

Digestive manifestations of parathyroid disorders

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World Journal of Gastroenterology 2011年第36期17卷 4063-4066页

作者： Bassam abboud Ronald Daher Joe Boujaoude Department of General Surgery Hotel Dieu de France HospitalFaculty of MedicineSaintJoseph UniversityBeirut 166830Lebanon Department of Gastroenterology Hotel Dieu de France HospitalFaculty of MedicineSaint-Joseph UniversityBeirut 166830Lebanon

The parathyroid glands are the main regulator of plasma calcium and have a direct influence on the digestive *** disturbances often result in unknown long-standing *** main manifestation of hypoparathyroidism is steatorrhea due to a deficit in exocrine pancreas *** association with celiac sprue may contribute to *** causes smooth-muscle atony,with upper and lower gastrointestinal symptoms such as nausea,heartburn and *** and peptic ulcer were strongly linked before the advent of proton pump ***,this association remains likely only in the particular context of multiple endocrine neoplasia type 1/Zollinger-Ellison *** contrast to chronic pancreatitis,acute pancreatitis due to primary hyperparathyroidism is one of the most studied *** causative effect of high calcium level is confirmed and the distinction from secondary hyperparathyroidism is *** digestive manifestations of parathyroid malfunction are often overlooked and serum calcium level must be included in the routine workup for abdominal symptoms.

关键词：甲状旁腺消化道系统表急性胰腺炎疾病质子泵抑制剂内分泌腺平滑肌收缩

Clinical characteristics and outcomes of autoimmune pancreatitis based on serum immunoglobulin G4 levels:A single-center,retrospective cohort study

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World Journal of Gastroenterology 2023年第47期29卷 6161-6164页

作者： Fouad Jaber Khaled Elfert Saqr Alsakarneh Azizullah Beran Mohammed Jaber Manesh Kumar Gangwani Yazan abboud Department of Internal Medicine University of Missouri-Kansas CityKansasMO 64108United States Department of Internal Medicine SBH Health SystemNew YorkNY 10457United States Department of Gastroenterology Indiana University420 University BlvdIndianapolisIN 46202United States Department of Medical Education Al Azhar University School of MedicineGaza P.O.Box 108Palestine Department of Internal Medicine The University of ToledoToledoOH 43606United States Department of Internal Medicine Rutgers New Jersey Medical SchoolNewarNJ 57873United States

Autoimmune pancreatitis(AIP)is a complex,poorly understood disease gaining increasing attention."Clinical Characteristics and Outcome of AIP Based on Serum IgG4 levels,"investigated AIP with a focus on serum immunoglobulin(Ig)G4 *** 213 patients with AIP were classified according to serum IgG4 levels:Abnormal(elevated)and *** with higher IgG4 levels exhibited a more active immune system and increased relapse *** IgG4,the IgA levels and age independently contributed to relapse risk,guiding risk assessment and tailored treatments for better ***,limitations persist,such as no IgA correlation with IgG4 levels,absent data on autoantibodypositive AIP cases critical for Asian diagnostic criteria,and unexplored relapse rates in high serum IgG AIP by *** factors and family histories were not *** the understanding and referral of seronegative AIPs increase,there's a growing need for commercially available,highly sensitive,and specific autoantibodies to aid in diagnosing individuals with low or absent serum IgG4 levels.

关键词： Autoimmune pancreatitis Relapse Immunoglobulin G Immune System,Immunoglobulin A Outcomes