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Recurrent gastrointestinal bleeding and hepatic infarction after liver biopsy

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World Journal of Gastroenterology 2014年第7期20卷 1878-1881页

作者： faraz bishehsari Peng-Sheng Ting Richard M Green Division of Gastroenterology and Hepatology Feinberg School of MedicineRobert H.Lurie Comprehensive Cancer CenterNorthwestern University Department of Medicine National Taiwan University College of Medicine

Hepatic artery pseudoaneurysms(HAP)are rare events,particularly after liver biopsy,but can be associated with serious *** a high suspicion is necessary for timely diagnosis and appropriate *** report on a case of HAP that potentially formed after a liver biopsy in a patient with *** HAP in our case was virtually undetectable initially by angiography but resulted in several complications including recurrent gastrointestinal bleeding,hemorrhagic cholecystitis and finally hepatic infarction with abscess formation until it became detectable at a size of *** patient remains asymptomatic over a year after endovascular embolization of the *** this report,we demonstrate that a small HAP can avoid detection by angiography at an early stage while being symptomatic for a prolonged course.A high clinical suspicion with a close clinical/radiological follow-up is needed in symptomatic patients with history of liver biopsy despite initial negative work *** diagnosed,HAP can be safely and effectively treated by endovascular embolization.

关键词： Gastrointestinal bleed Abnormal liver enzymes Hepatic artery pseudoaneurysms Liver biopsy Angiography

Epidemiological transition of colorectal cancer in developing countries: Environmental factors, molecular pathways, and opportunities for prevention

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World Journal of Gastroenterology 2014年第20期20卷 6055-6072页

作者： faraz bishehsari Mahboobeh Mahdavinia Michele Vacca Reza Malekzadeh Renato Mariani-Costantini Division of Gastroenterology Robert H Lurie Comprehensive Cancer Center Department of Medicine Northwestern University Feinberg School of Medicine Chicago IL 60611 United States Division of Allergy-Immunology Department of Medicine Northwestern University Feinberg School of Medicine Chicago IL 60611 United States Medical Research Council-Human Nutrition Research MRC-HNR Cambridge CB1 9NL United Kingdom Institute of the Metabolic Science IMS Cambridge CB2 0QQ United Kingdom Digestive Oncology Research Center Digestive Disease Research Institute Tehran University of Medical Sciences Shariati Hospital Tehran *** Iran Unit of General Pathology Aging Research Center G. d’Annunzio University Foundation 66100 Chieti Italy Department of Medical Oral and Biotechnological Sciences G. d’Annunzio University 66100 Chieti Italy

Colorectal cancer(CRC)is one of the leading causes of cancer and cancer-related mortality *** disease has been traditionally a major health problem in industrial countries,however the CRC rates are increasing in the developing countries that are undergoing economic *** environmental risk factors,mainly changes in diet and life style,have been suggested to underlie the rise of CRC in these *** and lifestyle impinge on nuclear receptors,on the intestinal microbiota and on crucial molecular pathways that are implicated in intestinal *** this respect,the epidemiological transition in several regions of the world offers a unique opportunity to better understand CRC carcinogenesis by studying the disease phenotypes and their environmental and molecular associations in different *** data from these studies may have important implications for the global prevention and treatment of CRC.

关键词： Colorectal cancer Developing countries Environment Diet Nuclear receptors Gut microbiota

Patient-derived pancreatic cancer-on-a-chip recapitulates the tumor microenvironment

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Microsystems & Nanoengineering 2022年第2期8卷 135-147页

作者： Muhammad R.Haque Caitlin R.Wessel Daniel D.Leary Chengyao Wang Abhinav Bhushan faraz bishehsari Division of Digestive Diseases Rush Center for Integrated Microbiome&Chronobiology ResearchRush University Medical CenterChicagoIL 60612USA University of Louisville School of Medicine LouisvilleKT 40202USA Department of Biomedical Engineering Illinois Institute of TechnologyChicagoIL 60616USA

The patient population suffering from pancreatic ductal adenocarcinoma(PDAC)presents,as a whole,with a high degree of molecular tumor *** heterogeneity of PDAC tumor composition has complicated treatment and stalled success in clinical *** in vitro techniques insufficiently replicate the intricate stromal components of PDAC tumor microenvironments(TMEs)and fail to model a given tumor's unique genetic *** development of patient-derived organoids(PDOs)has opened the door for improved personalized medicine since PDOs are derived directly from patient tumors,thus preserving the tumors'unique behaviors and genetic *** study developed a tumor-chip device engineered to mimic the PDAC TME by incorporating PDOs and stromal cells,specifically pancreatic stellate cells and *** PDOs in a multicellular microfluidic chip device prolongs cellular function and longevity and successfully establishes a complex organotypic tumor environment that incorporates desmoplastic stroma and immune *** primary cancer cells in monoculture were subjected to stroma-depleting agents,there was no effect on cancer cell ***,targeting stroma in our tumor-chip model resulted in a significant increase in the chemotherapy effect on cancer cells,thus validating the use of this tumor-chip device for drug testing.

关键词： cancer chemotherapy adenocarcinoma

Sustainable pathways to ammonia:a comprehensive review of green production approaches

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Clean Energy 2024年第2期8卷 60-72页

作者： Hafiz Sharjeel Ahmed Zaid Yahya Waqar Ali khan Ali faraz University of Engineering and Technology(UET) LahorePakistan Chemical Engineering Department NFC Institute of Engineering and Fertilizer ResearchFaislabadPakistan Chemical Engineering Department Punjab UniversityLahorePakistan

Ammonia production is vital in global industries but faces increasing environmental concerns,necessitating a shift towards sustainable *** review comprehensively explores diverse hydrogen production approaches and their potential impact on sustainable ammonia *** primary focus is investigating hydrogen production methods that enhance both efficiency and sustainability in ammonia synthesis,which is crucial for reducing its environmental ***,the review highlights the pivotal role of catalysts in improving Faradaic efficiency in ammonia synthesis,emphasizing their significance in overall process *** study identifies innovative technologies that have the potential to revolutionize ammonia production while aligning with global sustainability *** a thorough examination of hydrogen production methods and catalytic advances,this review provides valuable insight into greener and more efficient ammonia production *** conclusion,it emphasizes the importance of exploring hydrogen production methods and leveraging catalysts to improve ammonia production sustainability and *** addresses a critical research gap and paves the way for an environmentally responsible and globally aligned ammonia production industry.

关键词： ammonia production green alternatives sustainability catalyst

Electronic and thermoelectric properties of YbMg_(2)X_(2)(X=P,As,Sb,Bi)zintl compounds by first-principles method

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Journal of Rare Earths 2024年第1期42卷 147-154,I0006页

作者： Sajid Khan Dil faraz Khan R.Neffati Tariq Usman Muhammad Waqar Ahsraf Shamim Khan Saeed Ullah Jan G.Murtaza Department of Physics University of Science&Technology BannuBannu28100Pakistan Department of Physics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Laboratoire de Physique de La Matiere Condensee Departement de PhysiqueFaculte des Sciences de TunisUniversite Tunis El ManarCampus Universitaire1060TunisTunisia Department of Physics Shaoxing UniversityShaoxing312000China Department of Mathematics&Natural Sciences Prince Mohammad Bin Fahd UniversityAlkhobar31952Saudi Arabia Materials Modeling Lab Department of PhysicsIslamia College Peshawar25120KhyberPakhtunkhwaPakistan

In this work the structural,electronic and thermoelectric properties of YbMg_(2)X_(2)(X=P,As,Sb,Bi)zintl compounds were investigated comprehensively using first principles *** electronic properties were studied using PBE GGA,TB-mBJ and hybrid(YS-PBE0)*** the structural parameters of optimized structures are in harmonious agreement to the available *** band structure study illustrates that the titled materials manifest metallic and semi metallic nature using PBE and TB-mBJ potentials while they show wide band gap semiconducting behavior by following hybrid(YS-PBE0)*** density of states(TDOS)and partial density of states(PDOS)were also calculated to glimpse the contribution of orbitals of atoms in the formation of *** properties were studied by using BoltzTraP2 code employed to *** get enormous values of Seebeck coefficient(S),power factor(PF)and thermoelectric figure of merit(ZT)for all the samples YbMg_(2)X_(2)(X=P,As,Sb,Bi),Moreover,the overwhelming transport properties for the titled compounds indicate the optimum level of carriers’concentration which pinpoints these materials to be better thermoelectrics in the 1-2-2 zintl family.

关键词： Zintl compounds Hybrid functional Band structure Thermoelectrics Rare earths

Unveiling the cellular microstructure-property relations in martensitic stainless steel via laser powder bed fusion

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International Journal of Minerals,Metallurgy and Materials 2024年第11期31卷 2476-2487页

作者： Lingzhi Wu Cong Zhang Dil faraz Khan Ruijie Zhang Yongwei Wang Xue Jiang Haiqing Yin Xuanhui Qu Geng Liu Jie Su Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China Department of Physics University of Science and Technology BannuBannu 28100Pakistan Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China Institute for Special Steel Research Central Iron and Steel Research InstituteBeijing 100081China

Laser powder bed fusion(LPBF)is a widely recognized additive manufacturing technology that can fabricate complex components rapidly through layer-by-layer ***,there is a paucity of research on the effect of laser scanning speed on the cellular microstructure and mechanical properties of martensitic stainless *** study systematically investigated the influence of laser scanning speed on the cellular microstructure and mechanical properties of a developed Fe11Cr8Ni5Co3Mo martensitic stainless steel produced by *** results show that increasing the laser scanning speed from 400 to 1000 mm/s does not lead to a noticeable change in the phase fraction,but it reduces the average size of the cellular microstructure from 0.60 to 0.35μ*** scanning speeds of 400 and 1000 mm/s both had adverse effects on performances of sample,resulting in inadequate fusion and keyhole defects *** optimal scanning speed for fabricating samples was determined to be 800 mm/s,which obtained the highest room temperature tensile strength and elongation,with the ultimate tensile strength measured at(1088.3±2.0)MPa and the elongation of(16.76±0.10)%.Furthermore,the mechanism of the evolution of surface morphology,defects,and energy input were clarified,and the relationship between cellular microstructure size and mechanical properties was also established.

关键词： laser powder bed fusion martensitic stainless steel cellular microstructure mechanical properties strengthening mechanism

High Velocity Compaction of Aluminum Powders

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稀有金属材料与工程 2011年第S3期40卷 86-89页

作者： Khan Dil faraz University of Science and Technology Beijing

High velocity compaction process of atomized Al powders was studied. The green density, the maximal force and the withdraw force of specimen were investigated. The green density of atomized aluminum powder was obtained to be 2.68 g/cm3 and its relative density is about 99%. The maximal force increased proximately linearly with the compaction energy. The withdraw force was observed ranging between 30 and 70 kN. The radial spring back was less than 0.1%.

关键词： high velocity compaction powder metallurgy aluminum powder

Lattice parameters of Ti–4Al–2V alloy with thermal oxidation

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Rare Metals 2016年第2期35卷 149-153页

作者： faraz Omidbakhsh Ali Reza Ebrahimi Department of Mechanical Engineering Tabriz Branch Islamic Azad University Mining and Metallurgical Engineering Department Amirkabir University of Technology

In this study, the effect of thermal oxidation on the lattice parameters of Ti-4Al-2V alloy was *** were oxidized at 450, 600 and 650 °C for 1-7 h in electric furnace under air atmosphere. The lattice parameters were determined using the Cohen method as a function of oxidation time at each temperature. The lattice parameters of as-received alloy are calculated as a = 0.29289 nm and c = 0.46652 nm. The thermal oxidation at 450 °C results in a gradual increase in a-parameter, whereas it goes through a maximum at higher temperatures（600 and 700 °C）. The results show that these maximums are reduced to an approximately constant value after a long-time oxidation. The c-parameter generally increases over the whole treatment condition. It is believed that these variations could be due to the dissolution of oxygen atoms in octahedral sites of hcp lattice of titanium.

关键词： Lattice parameter Ti-4Al-2V X-ray diffraction Cohen method Octahedral sites

Thin Film Flow of a Second Grade Fluid over a Stretching/Shrinking Sheet with Variable Temperature-Dependent Viscosity

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Chinese Physics Letters 2010年第3期27卷 212-215页

作者： S. Nadeem Naeem faraz Department of Mathematics Quaid-i-Azam University 45320 Islamabad Pakistan

Effects of variable viscosity on the flow and heat transfer in a thin film on a horizontal porous stretching sheet are analyzed. The steady boundary layer equations for momentum and thermal energy are simplified by using similarity transformations. The resulted and coupled nonlinear differential equations are solved by Homotopy analysis method. The results are presented graphically to interpret various physical parameters appearing in the problem.

关键词： Soft matter liquids and polymers Fluid dynamics Mathematical physics