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World Journal of Gastroenterology 2011年第14期17卷 1844-1847页

作者： Hussain issa Arabia Ahmed H Al-Salem Department of Internal Medicine King Fahad Specialist HospitalDammamQatif 31911Saudi Department of Pediatric Surgery Maternity and Children HospitalDammamQatif 31911Saudi Arabia

AIM:To evaluate the role of endoscopic retrograde cholangiopancreatography (ERCP) for choledocholithiasis in patients with sickle cell anemia (SCA) in the era of laparoscopic cholecystectomy (LC). METHODS:Two hundred and twenty four patients (144 male,80 female; mean age,22.4 years; range,5-70 years) with SCA underwent ERCP as part of their evaluation for cholestatic jaundice (CJ). The indications for ERCP were:CJ only in 97,CJ and dilated bile ducts on ultrasound in 103,and CJ and common bile duct (CBD) stones on ultrasound in 42. RESULTS:In total,CBD stones were found in 88 (39.3%) patients and there was evidence of recent stone passage in 16. Fifteen were post-LC patients. These had endoscopic sphincterotomy and stone extraction. The remaining 73 had endoscopic sphincterotomy and stone extraction followed by LC without an intraoperative ***:In patients with SCA and cholelithiasis,ERCP is valuable whether preoperative or postoperative,and in none was there a need to perform intraoperative cholangiography. Sequential endoscopic sphincterotomy and stone extraction followed by LC is beneficial in these patients. Endoscopic sphincterotomy may also prove to be useful in these patients as it may prevent the future development of biliary sludge and bile duct stones.

关键词： Sickle cell anemia Cholelithiasis Choledocholithiasis Laparoscopic cholecystectomy Cholangiography Endoscopic retrograde cholangiopancreatography

Influence of zeolite and cement additions on mechanical behavior of sandy soil

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Journal of Rock Mechanics and Geotechnical Engineering 2016年第5期8卷 746-752页

作者： Hossein Mola-Abasi issa Shooshpasha Geotechnical Department Babol University of Technology

It is well known that the cemented sand is one of economic and environmental topics in soil stabilization. In this instance, a blend of sand, cement and other materials such as fiber, glass, nanoparticle and zeolite can be commercially available and effectively used in soil stabilization in road construction. However, the influence and effectiveness of zeolite on the properties of cemented sand systems have not been completely explored. In this study, based on an experimental program, the effects of zeolite on the characteristics of cemented sands are investigated. Stabilizing agent includes Portland cement of type II and zeolite. Results show the improvements of unconfined compressive strength （UCS） and failure properties of cemented sand when the cement is replaced by zeolite at an optimum proportion of 30% after 28 days. The rate of strength improvement is approximately between 20% and 78%. The efficiency of using zeolite increases with the increases in cement amount and porosity. Finally, a power function of void-cement ratio and zeolite content is demonstrated to be an appropriate method to assess UCS of zeolite-cemented mixtures.

关键词： ZeoliteCemented sand StrengthUnconfined compressive strength (UCS) Void-cement ratio

Sickle cell cholangiopathy:An endoscopic retrograde cholangiopancreatography evaluation

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World Journal of Gastroenterology 2009年第42期15卷 5316-5320页

作者： Hussain issa Ali Al-Haddad Ahmed Al-Salem Department of Internal Medicine Division of GastroenterologyKing Fahad Specialist HospitalDammam 31444Saudi Arabia Department of Internal Medicine Qatif Central HospitalQatif 31911Saudi Arabia Department of Pediatric Surgery Maternity and Children HospitalDammamQatif 31911Saudi Arabia

AIM:To evaluate the role of endoscopic retrograde cholangiopancreatography(ERCP) in patients with sickle cell disease(SCD) .METHODS:Two hundred and twenty four SCD patients with cholestatic jaundice(CJ) had *** indications for ERCP were based on clinical and biochemical evidence of CJ and ultrasound ***:Two hundred and forty ERCPs were *** indications for ERCP were:CJ only in 79,CJ and dilated bile ducts without stones in 103,and CJ and bile duct stones in *** those with CJ only,ERCP was normal in 42(53.2%) ,and 13(16.5%) had dilated bile ducts without an obstructive *** the remaining 22,there were bile duct stones with or without *** those with CJ,dilated bile ducts and no stones,ERCP was normal in 17(16.5%) ,and 28(27.2%) had dilated bile ducts without an obstructive *** the remaining 58,there were bile ducts stones with or without *** those with CJ and bile duct stones,ERCP was normal in two(4.8%) ,and 14(33.3%) had dilated bile ducts without an obstructive *** the remaining 26,there were bile duct stones with or without ***:Considering the high frequency of biliary sludge and bile duct stones in SCD,endoscopic sphincterotomy might prove helpful in these patients.

关键词： Sickle cell disease Hepatobiliary Cholestsatic jaundice Sickle cell hepatopathy Sickle cell cholangiopathy Endoscopic retrograde cholangiopancreatography

Radiation oncology practice during COVID-19 pandemic in developing countries

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World Journal of Clinical Cases 2021年第25期9卷 7292-7296页

作者： Fawzi Abuhijla Ramiz Abuhijlih issa Mohamad Department of Radiation Oncology King Hussein Cancer CenterAmman 11941Jordan

Radiation therapy(RT)is considered one of the cornerstone modalities of treatment for different cancer *** preparation and delivery of RT requires a number of staff members from different disciplines within the radiation oncology *** the emergence of the corona virus disease 2019(COVID-19)pandemic,RT,similar to other cancer care modalities,has been adapted to minimize patient and staff exposure without compromising the oncological *** was reflected in the dramatic practice changes that occurred in the past year to address the lockdown restrictions and fulfill the infection control *** practices differ across regions based on financial and training levels,and developing countries with limited resources have struggled to maintain radiation treatment services at a level equivalent to that in developed countries while following pandemic control *** response during the COVID-19 pandemic varied between developing countries according to the infection rate and RT technological *** this editorial,we review recently published articles addressing radiotherapy practice reports during the COVID-19 pandemic in developing countries.

关键词： Radiotherapy COVID-19,Developing countries Radiation therapy Pandemic Low income countries

Semiotic Proposition for Understanding Semantics Within Construction Documents

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Tsinghua Science and Technology 2008年第S1期13卷 192-198页

作者： Ivan Mutis Raja R. A. issa Department of Construction Science Texas A & M University College Station School of Building Construction University of Florida

This research develops a methodology that helps actors in understanding information generated from multiple construction participants. It employs semiotic theory which approaches the interpreter’s understanding of the role of the representations used in construction documents to communicate meanings to other participants. This strategy is designed to aid the interpreters’ comprehension of the use of symbols. The symbols within the construction documents are forms of representations that take the form of a visual representation of a set of markers that describe a formal language, and of markers that are used to represent natural language as well as other possible representations, such as a collection of codes for indexing documents. Symbols are replaced by signs under the semiotics theory. The use of symbols as signs is this study’s recognition of the relationship between the interpreter and the material quality of symbols. The semiotic analysis is an examination of the compromise between the meanings of a representation per se and the concept associated with the understanding of such representation.

关键词： semiotics construction representation semantic forms ontology categories

A solvent-free synthesis of 1,2,3,5-tetrasubstituted pyrroles from enaminones and α-haloketones

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Chinese Chemical Letters 2011年第10期22卷 1219-1222页

作者： issa Yavari Maryam Ghazvini Leila Azad Tayebeh Sanaeishoar Department of Chemistry Science and Research BranchIslamic Azad UniversityTehranIran

A simple synthesis of 1,2,3,5-tetrasubstituted pyrrole derivatives from the reaction of enaminone withα-haloketones,under solvent-free conditions,is described.

关键词： 1H-Pyrrole Enaminone ar-Haloketone 1 3-Dicarbonyl compound Solvent-free

Geochemical characteristics of natural gases and source rocks in Obayied sub-basin,north Western Desert,Egypt:implications for gas-source correlation

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Acta Geochimica 2023年第2期42卷 241-255页

作者： Mostafa Hassan Mahmoud Leila Mohammed Ahmed Ghalib issa Omar Hegab Geology Department Faculty of ScienceMansoura UniversityMansoura 35516Egypt Egyptian General Petroleum Corporation CairoEgypt

Western Desert represents a major oil and gas province in Egypt producing more than 50%of the country’s oil *** and gas blend occurs in most producing fields,however,the genetic link between gas and liquid hydrocarbon phases are not *** sub-basin in the Western Desert where oil and gas phases coexist in the Middle Jurassic sandstones of the Khatatba Formation provides an ideal place to investigate the link between oil and gas *** analyses on rock samples(Rock–Eval pyrolysis,vitrinite reflectance,R_(o))and gases(molecular and isotopic composition)were conducted in order to identify the genetic characteristics of the hydrocarbon phases ***-relevant parameters(Rock–Eval T_(max),vitrinite reflectance R_(o))elucidate that only Middle Jurassic Khatatba organofacies capable of generating wet and dry hydrocarbon ***,the enrichment of C_(7)normal alkanes,mono-branched alkanes relative to polybranched components in the Obayied gases reflect their generation via cracking of *** modelling results confirm gas generation through both primary and secondary ***,secondary cracking of liquid hydrocarbon phases is volumetrically more *** cracking of the Khatatba organofacies likely predate and catalyze the secondary cracking of the liquid phases and therefore the volume of generated gas increases incrementally eastward where both processes *** present study highlights the significant role of secondary cracking in the generation and accumulation of huge gas accumulations in the basins containing oil-prone source intervals.

关键词： Primary and secondary cracking Gas geochemistry Jurassic Khatatba Obayied Western Desert

Analysis of Eigenvalues for Molecular Structures

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Computers, Materials & Continua 2022年第10期73卷 1225-1236页

作者： Muhammad Haroon Aftab Kamel Jebreen Mohammad issa Sowaity Muhammad Hussain Department of Mathematics and Statistics The University of LahoreLahore54000Pakistan Department of Mathematics An-Najah National UniversityNablusP400Palestine Department of Mathematics Palestince Polytechnic UniversityHebronP766Palestine Department of Mathematics Comsats University IslamabadLahore CampusLahore54000Pakistan

In this article,we study different molecular structures such as Polythiophene network,PLY(n)for n=1,2,and 3,Orthosilicate(Nesosilicate)SiO4,Pyrosilicates(Sorosilicates)Si2O7,Chain silicates(Pyroxenes)(SiO3)n,and Cyclic silicates(Ring Silicates)Si3O9 for their cardinalities,chromatic numbers,graph variations,eigenvalues obtained from the adjacency matrices which are square matrices in order and their corresponding characteristics *** convert the general structures of these chemical networks in to mathematical graphical *** transform the molecular structures of these chemical networks which are mentioned above,into a simple and undirected planar graph and sketch them with various techniques of *** matrices obtained from these simple undirected graphs are *** also label the molecular structures by assigning different *** graphs have also been studied for *** a connected graph,the eigenvalue that shows its peak point(largest value)obtained from the adjacency matrix has multiplicity ***,the gap between the largest and its smallest eigenvalues is interlinked with some form of“connectivity measurement of the structural graph”.We also note that the chemical structures,Orthosilicate(Nesosilicate)SiO4,Pyrosilicates(Sorosilicates)Si2O7,Chain silicates(Pyroxenes)(SiO3)n,and Cyclic silicates(Ring Silicates)Si3O9 generally have two same *** matrices have great importance in the field of computer science.

关键词： Vertex degree edges eigenvalues characteristics polynomials adjacency matrices graphical model genetics polythiophene silicates

Advanced hybrid plasmonic nano-emitters using smart photopolymer

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Photonics Research 2022年第7期10卷 1552-1566页

作者： DANDAN GE ALI issa SAFI JRADI CHRISTOPHE COUTEAU SYLVIE MARGUET RENAUD BACHELOT Light NanomaterialsNanotechnologies(L2n)LaboratoryCNRS EMR 7004Universitéde Technologie de Troyes12 rue Marie Curie10004Troyes CedexFrance UniversitéParis Saclay CEACNRSNIMBEF-91191Gif sur YvetteFrance

The integration of nano-emitters into plasmonic devices with spatial control and nanometer precision has become a great *** this paper,we report on the use of a smart polymer to selectively immobilize nano-emitters on specific preselected sites of gold nanocubes(GNCs).The cunning use of the polymer is ***,it records both the selected site and the future emitters-GNC distance through plasmon-assisted ***,because the polymer is chemically functionalized,it makes it possible to attach the nano-emitters right at the preselected polymerized sites,which subsequently recognize the nano-emitters to be *** the resulting active medium is a spatial memory of specific plasmonic modes,it is anisotropic,making the hybrid nanosources sensitive to light *** ability to adjust their statistical average lifetime by controlling the thickness of the nanopolymer is demonstrated on two kinds of nano-emitters coupled to GNCs:doped polystyrene nanospheres and semiconductor colloidal quantum dots.

关键词： polymer plasmon attached

Non-alcoholic fatty liver disease: a pandemic disease with multisystem burden

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Hepatobiliary Surgery and Nutrition 2018年第5期7卷 389-391页

作者： Somaya Albhaisi Danny issa Naim Alkhouri The Division of Internal Medicine Hepatology and NutritionVirginia Commonwealth UniversityRichmondVAUSA The Division of Gastroenterology Hepatology and NutritionVirginia Commonwealth UniversityRichmondVAUSA The Texas Liver Institute University of Texas(UT)Health San AntonioSan AntonioTXUSA

Non-alcoholic fatty liver disease(NAFLD)is a leading cause of liver-related morbidity and mortality in the United States and globally(1,2).A large body of literature currently exists to suggest at the clinical burden ... 详细信息

关键词： NAFLD mortality liver