bluuebunny/crossref_metadata_2025_split huggingface dataset:
Antithrombin III in the prevention of thrombotic complications in high risk patients undergoing liver transplantation
Authors: Kuznetsova N. K. , Klychnikova E. V. , Zhuravel S. V. , Olisov O. D. , Utkina I. I. , Novruzbekov M. S. , Reshetnyak V. I. 
Published: September 2019

Introduction. Recent studies have indicated an increased incidence of thrombotic vascular complications after liver transplantation. The reasons may be associated with surgical technique and “unbalanced” hemostasis in patients with diffuse liver diseases. The imbalance is determined by the deficiency of physiological procoagulants and anticoagulants due to a reduced protein-synthesis function of the liver in chronic hepatocyte injury. At the same time, 90% of all spontaneous antithrombin activity is associated with antithrombin III.Aim. The aim of the study was to evaluate the efficacy of using antithrombin III concentrate in liver transplant patients.Material and methods. A retrospective study included 46 patients undergoing liver transplantation who had nonocclusive thrombosis in the portal vein system prior to surgery and postoperative venous or arterial thrombosis.Results. The treatment results were compared between the group with antithrombin III concentrate and the control group in patients with portal vein thrombosis before surgery and postoperative venous or arterial thrombosis; the antithrombin III activity dynamics in the early postoperative period was assessed; the incidence of infectious, and vascular complications and the mortality rates were analyzed.Conclusion. The antithrombin III concentrate administration during liver transplantation and in the postoperative period contributes to a rapid normalization of antithrombin III activity in blood, the decrease in mortality and in the incidence of infectious and thrombotic complication rates.
Defasagem idade-série em escolas estaduais de ensino médio do Rio Grande do Sul
Authors: Fritsch Rosangela , Vitelli Ricardo , Rocha Cleonice 
Published: September 2019

Tem como objetivo discutir indicadores de qualidade da educação, com ênfase nas taxas de defasagem idade-série no ensino médio, em três escolas públicas estaduais de São Leopoldo. É parte de uma produção de pesquisas do subprojeto Estudo da Evasão no Ensino Médio e Superior em São Leopoldo. Compõe o projeto Observatório da Educação – Indicadores de Qualidade e Gestão Democrática. Os dados foram coletados em banco de dados do Instituto Nacional de Estudos e Pesquisas Educacionais Anísio Teixeira (Inep) e nas escolas pesquisadas. A análise descritiva mostra que a defasagem idade-série se acentua conforme se segmenta o público. Existem diferenças quando se comparam resultados entre escola, assim como turnos, séries e condição dos estudantes. Conclui-se que as políticas educacionais são insuficientes ou ineficazes, principalmente por não considerarem as diferenças existentes entre as realidades de seus estudantes.
Long Term Follow Up of Cutaneous Sinus Histiocytosis (Rosai-Dorfman Disease)
Authors: Sequeira Andrew Jose , SEQUEIRA MARIO Jose 
Published: September 2019

Rosai-Dorfman disease is a benign histiocytic proliferative disorder of unknown etiology with cutaneous variants clinically presenting with painless cervical lympadenopathy, fever, leukocytosis and other systemic findings.1 Although the skin is the most common extranodal site, rare purely cutaneous forms of the disease exist and diagnosing such case rests solely on histopathologic findings.2 We report a case with a fifteen year follow up period of this uncommon disorder and describe itsclinical course marked by multiple episodic recurrences.
Ampicillin use in Acne
Authors: Barber Cara , Ashack Kurt , Boulter Joshua , Ashack Richard 
Published: September 2019

Introduction: In one author’s experience, ampicillin is an effective alternative antibiotic for acne; however, current literature for ampicillin use in acne is scant. The objective of this study was to demonstrate the response of oral Ampicillin in acne.Methods: A retrospective analysis of 243 patients with Acne vulgaris treated with Ampicillin 500mg twice daily was conducted. The severity of acne (on a scale of 0 to 3) at the last visit was compared with baseline severity determined at the initial visit. Results were analyzed using the paired samples t-test. Results: The average severity of acne was reduced from 1.54 to 0.90 (p < 0.001). The average severity was reduced from 1.69 to 1.09 (p < 0.001) among men, and from 1.48 to 0.84 (p < 0.001) among woman. Lastly, average severity was decreased from 1.67 to 1.12 (p < 0.001) in patients with nodulocystic acne, from 1.45 to 0.77 (p < 0.001) with inflammatory acne patients, and from 1.00 to 0.38 (p < 0.001) in patients with comedonal acne. Limitations: This study was limited by its retrospective nature and analysis of a small patient population. Additionally, a validated acne scoring system was not used due to provider documentation. Conclusion: To conclude, Ampicillin had a positive effect on our patient’s acne.
Electrosurgery and Implantable Electronic Devices: A Survey of Current Practices among Cutaneous Surgeons
Authors: Morris Caroline Rose , Hurst Eva A 
Published: September 2019

Background: The use of electrosurgery within dermatology is widespread and the number of patients with an implantable electronic device (IED) is ever-increasing. Adverse effects of performing electrosurgery on patients with IEDs could pose a significant patient safety risk. There is a paucity of literature existing detailing guidelines for cutaneous surgeons regarding electrosurgery in IED patients. Objective: To assess current practices and complications of cutaneous surgeons performing electrosurgery in IED patients.Methods: An electronic survey was distributed to members of the American College of Mohs Micrographic Surgery using REDCap. Data was collected between March 2019 and May 2019.Results: The survey was sent to approximately 1700 ACMS members with 178 responses received. The most commonly reported routine precautions included utilization of only short bursts of current, avoidance of electrosurgery around the device, and use of minimal power/lowest effective settings. In total there were nine complications with an estimated 31 patients experiencing electromagnetic interference (EMI) out of over 250,000 procedures. Complications were more commonly seen in patients with a cardioverter-defibrillator than any other device (RR:4.74, CI:1.29-17.4). The use of true heat cautery and bipolar (two-tip electrode) were associated with the lowest rate of EMI. Whereas, electrocoagulation, electrosection, and monopolar (single-tip electrode) were more likely to cause EMI (RR:3.62, 95% CI:1.82-7.19).Conclusions: Significant EMI to IEDs during routine cutaneous electrosurgery procedures is rare, however, there is a clear lack of recommendations. The use of bipolar forceps and electrocautery may be safer when electrosurgery is required. Further investigation is required to develop guidelines for electrosurgery in IED patients.
61-Year-Old White Female with a Non-Healing Ulcerated Ankle Mass
Authors: Lowther Christopher , Fiddler Troy , Whitcroft Ian A , Sapp Juanita , Marks Etan , Cockerell Clay 
Published: September 2019

Merkel cell carcinoma is a rare cutaneous carcinoma from the tactile Merkel cells. With fewer than half the patients surviving more than one year and fewer than 20% surviving beyond five years. These tumors are rarely suspected until the biopsy results return. Polyoma virus is associated with up to 80% of the tumors. 53% present on the head and neck and 35% present on the extremities while larger lesions are exceedingly rare in either location. Recently, A newly approved drug, Avelumab, has shown tumor response in patients with some patients experiencing complete remission.
Correlation of Biomarkers and Frozen Section Diagnosis with Paraffin Histopathological Diagnosis in Suspected Ovarian Cancer
Authors: Mukherjee Tanushri , Mukherjee Soma , Sanyal Parikshit , Bharadwaj Vikram , Sampath S , Gunjan  
Published: September 2019

Introduction:
Ovarian cancers pose diagnostic dilemma and is problematic for decision making for the gynecological oncologist as well as the pathologist. The use of intra-operative frozen section can aid significantly in decision making and assist in choosing the correct operative path once a mass lesion of ovaries is discovered.

Materials and Methods:
Over a two-year period, 50 cases of Suspected Ovarian cancers were examined by intra- operative frozen section as well as followed up with histopathology in paraffin sections. Results were categorized in two strata—benign and malignant.

Results:
A comparison between frozen-section diagnosis and findings on paraffin section showed that the sensitivity of frozen section in diagnosis of malignant lesions is 97.14%, with specificity 93.33%, positive predictive value 97.14% and negative predictive value 93.33%. Among 50 cases, one case was reported as false positive and one was reported as false negative.

Conclusion:
Intra-operative frozen section is a highly sensitive and specific modality for the diagnosis of malignant lesions of the ovary.
Application of Hyperstatic Reaction Method for Designing of Tunnel Permanent Lining, Part I: 2D Numerical Modelling
Authors: Hassani Rahim , Basirat Rouhollah 
Published: September 2019

The increase of bored tunnels in the entire world has raised the question how to design the tunnel structure in an efficient way. This paper proposes a numerical approach to the Hyperstatic Reaction Method (HRM) for analysing permanent tunnel linings. The permanent tunnel lining is known as main structure of tunnel maintenance during the time. The HRM is one of the analysis methods for tunnel lining in long term. In this paper, two dimensional numerical modelling is performed by considering hyperstatic reaction concepts. Loading is done after the calculation of long term loads, and ground reaction is simulated by springs. Designing is done for Manjil-Rudabar freeway project, Tunnel No. 2. The numerical analyses were performed for Operational Design Earthquake (ODE) and Maximum Design Earthquake (MDE) loading conditions. A new simplified approach is used for considering the effect of earthquake loading on the tunnel lining. Then, an interaction diagram between axial force and bending moment used for investigating the capacity of tunnel lining. The thickness of tunnel lining and armature are calculated for three sections based on induced forces in tunnel lining. These forces were different in every section according to the load combinations, rock mechanics properties, lining properties, and overburden. The numerical results showed that the forces in tunnel lining for MDE condition is approximately 50% more than ODE condition in earthquake loading. This numerical processing presented that the HRM is a proper, fast, and practical method for designing and analysing the tunnel lining.
A Numerical Investigation of Segmental Lining Joints Interactions in Tunnels-Qomrud Water Conveyance Tunnel
Authors: Ahmadi Mohammad Hossein , Mortazavi Ali , Davarpanah Seyed Morteza , Zarei Hamid 
Published: September 2019

A comprehensive analysis of segmental lining joints can assist to guarantee a safe construction during tunnelling and serviceably stages. This paper has thoroughly investigated the interaction mechanism of precast concrete lining joints in tunnels. The Universal Distinct Element Code (UDEC), a two-dimensional numerical program based on the distinct element method (DEM) for discontinuum modelling, was implemented to simulated a typical segmental lining model consisting of six segment rings. In the analyses, the typical segmental lining design parameters of Qomrud water conveyance tunnel, aimed to transfer 100 million cu. m. water from the origins of Dez River to central Iranian desert, were employed to fulfil the purpose of the research. In the conducted analyses, the worst-case scenario of the loading faced during the boring of Qomrud tunnel was considered. This was highly associated with the existence of the crushed zone dipping at 75 degree at the location of the key segment. The worst scenario based on the condition that concerns the crushed zone intersect segmental lining at the location of key segment has been taken into consideration. In this study, the load acting on the joints of the segments includes the gravity load from the tunnel overburden and the crushed zone stratum force that intersects tunnel with 75 slopes at the location of the key segment, the gravity force of the segments and the earth pressure. The numerical investigation has been used for the different coefficients of stress concentration of 0.5, 1, 1.5, 2 and also different geological conditions of the saturated crushed zone under critical scenario.
Effects of Hybridization of Carbon and Polypropylene Short Fibers as Reinforcement on Flexural Properties of Fine Aggregate Concretes
Authors: Halvaei Mana , Jamshidi Masoud , Latifi Masoud 
Published: September 2019

Nowadays, the advantages of short fibers as reinforcement in cement based materials are well known. In this paper, the effect of hybridization of short polypropylene (PP) and carbon fibers on flexural properties of a fine aggregate concrete has been investigated. Samples with dimensions of containing 2 vol% of the polypropylene and carbon fibers with 6 and 8mm length were made. The PP to carbon fiber proportion in the samples were selected as 100:0, 75:25, 50:50, 25:75 and 0:100. A four-point bending test was carried out on all the samples to investigate the flexural behaviour. It was found that the addition of carbon fibers significantly increases the flexural load (i.e. 260%). The application of PP fibers leads to a 2590% increase in the toughness compared to the control sample. It was also found that the sample with carbon to PP ratio of 75/25 shows the optimum results and it leads to 190% and 2070% increment in the flexural load and toughness, respectively, in comparison to the control sample.
Geotechnical Properties of Lateritic Soil Stabilized with Ground-Nut Husk Ash
Authors: Nnochiri Emeka Segun , Ogundipe Olumide Moses 
Published: September 2019

This study assesses the geotechnical properties of lateritic soil stabilized with Ground-nut Husk Ash. Preliminary tests were carried out on the natural soil sample for identification and classification purposes, while consistency limits tests were thereafter carried out as well. Engineering property tests such as California Bearing Ratio (CBR), Unconfined Compressive Strength (UCS) and compaction tests were performed on both the natural soil sample and the stabilized lateritic soil, which was stabilized by adding Ground-nut Husk Ash, GHA, in percentages of 2, 4, 6, 8 and 10 by weight of the soil. The results showed that the addition of GHA enhanced the strength of the soil sample. The Maximum Dry Density (MDD) reduced from 1960 kg/m3 to 1760 kg/m3 at 10% GHA by weight of soil. The Optimum Moisture Content (OMC) increased from 12.70% to 14.95%, also at 10% GHA by weight of soil. The unsoaked CBR values increased from 24.42% to 72.88% finally, the UCS values increased from 510.25 kN/m2 to 1186.46 kN/m2, for both CBR and UCS, the values were at 10% GHA by weight of soil. It was therefore concluded that GHA performs satisfactorily as a cheap stabilizing agent for stabilizing lateritic soil especially for subgrade and sub base purposes in road construction.
Analytical and Laboratory Evaluation of the Solubility of Gypsiferous Soils
Authors: Afsharian Aliabbas , Abbasi Nader , Khoserowjerdi Amir , Sedghi Hossein 
Published: September 2019

Gypsum soil is one of the problematic soils because of considerable solubility for Gypsum particles in contact with water. In this research the effects of three factors including; gypsum percent, hydraulic gradient and soil texture were studied on solubility of gypsum soils. To do this, samples of gypsum soils were provided artificially by adding various rates of natural gypsum rock including 0, 5, 10, 20 and 30 percent weight of 3 kinds of soil textures including clay, silty clay and sand. Totally, 15 types of gypsum soils were prepared. Then each of gypsum soils were leached under five hydraulic gradients levels 0.5, 1, 2, 5 and 10. The results of the test indicated that the rate of Gypsum in the soil had direct effect on the rate of soluble and by increasing the percent of Gypsum, the rate of solubility was increased. In addition, by increasing hydraulic gradient, the speed of water existing soil media in a specified time was increased and also higher rate of Gypsum was derived. Also the soil texture has a considerable effect on the rate of solubility of soil. In this study, rate of solubility of gypsum soils with sandy soils was determined as 1.5 to 2 times more than the rate of clay soils. The statistical results show the highest impact of gypsum percentage and lowest impact of hydraulic gradient soil on solubility of particles in different types of soils and it has no significant effect on the overall equation of the soil texture.
Reviewing of the Simulation Models in Cost Management of the Construction Projects
Authors: Al-Zwainy Faiq Mohammed Sarhan , Amer Reem , Khaleel Tareq 
Published: September 2019

Simulation and computational techniques cover a variety of aspects also had proved its feasibility in construction management as whole, so it had adopted by a lot of researches during the last decades with rapid progress. The current study presents a focused review about construction cost simulation using, and provides an overview of such advancements achieved between 1990 and 2016 in construction management sector. This paper focuses specifically on many different topics including construction cost simulation, simulation modelling concept, steps of simulation conducting, simulation purposes, simulation advantages and disadvantages, etc. Major advances in construction cost simulation area are highlighted, as well as the trends for development and application. Over the selected study period, there has been a substantial increase in the use of high-fidelity simulation in construction cost management.
Investigation of Soil Structure Interaction and Wall Flexibility Effects on Natural Sloshing Frequency of Vessels
Authors: Abbasi Maedeh Pouyan , Ghanbari Ali , Wu Wei 
Published: September 2019

The main purpose of this study is to establish the effects of vessel walls flexibility on its natural sloshing frequency considering soil-structure-fluid interaction theory. Furthermore, two new efficiently relations to find both of wall flexibility and soil-structure interaction effects on natural frequency are developed. Regarding the aim of current study three different conditions of elevated tanks are applied. Fixed base condition with an emphasis on recommendations of international code ACI-350, analytical FSSI regarding equivalent mass spring method, and the numerical direct method regarding theory of finite element are taken into consideration. Results indicate that there is no significant effect of walls flexibility on natural sloshing frequency regarding fixed base assumptions of vessels. On the contrary, significant effects of wall flexibility are achieved considering SSI theory. Results of international code ACI-350 show that, the international codes assumptions have imprecise estimations of natural sloshing frequency in the range of hard to very soft soil categories. On the other hand, it is observed that the wall flexibility has a more highlighted effect on natural frequency in soft soils rather than soil-structure interaction. The significance of wall flexibility effect on natural frequency is more than that of SSI considering soil softening.
Development Behavior for Post-Tensioned Self-Centering Steel Connection under Cyclic Loading
Authors: Torabipour Ahmadreza , Shiravand M. R. 
Published: September 2019

One of the newest steel beam-column joints to replace conventional welded connections, post-tensioned connection steel is with the upper and lower angles. In this connection are high-strength steel strands that parallel beam web and angles between beams and column. Actually high resistance strands and upper and lower angles respectively are provider centralization properties and energy dissipation capacity of the connection. The benefits of post-tensioned steel can be used in connection with the centralization and lack of relative displacement (drift) persistent, stay elastic core components such as connecting beams, columns and fountains connection, appropriate initial stiffness and joint manufacture with materials and traditional skills. . In this study, numerical modelling in Abaqus software, the results of the analysis were compared with the results of laboratory samples and the results showed that the two together are a perfect match. After validation, parameters influential centrist connection then pulled the thick angles in three numerical models were evaluated. The results show that by increasing the thickness of the angles, increase energy dissipation capacity and ductility connection and the β₁ value does not experience tangible changes with changes in angle thickness.
State of the Art: Mechanical Properties of Ultra-High Performance Concrete
Authors: Baqersad Mohamadtaqi , Sayyafi Ehsan Amir , Mortazavi Bak Hamid 
Published: September 2019

During the past decades, there has been an extensive attention in using Ultra-High Performance Concrete (UHPC) in the buildings and infrastructures construction. Due to that, defining comprehensive mechanical properties of UHPC required to design structural members is worthwhile. The main difference of UHPC with the conventional concrete is the very high strength of UHPC, resulting designing elements with less weight and smaller sizes. However, there have been no globally accepted UHPC properties to be implemented in the designing process. Therefore, in the current study, the UHPC mechanical properties such as compressive and tensile strength, modulus of elasticity and development length for designing purposes are provided based on the reviewed literature. According to that, the best-recommended properties of UHPC that can be used in designing of UHPC members are summarized. Finally, different topics for future works and researches on UHPC’s mechanical properties are suggested.
Numerical Modeling of Soil-Pile-Interaction with Near and Far Field Earthquake's Effects
Authors: Shahmohammadi Mehrjerdi Mohammad , Fallah Ahmad Ali , Tabatabaei Aghda S.T. 
Published: September 2019

This paper studies Near and Far Field effects of the response of a column-pile to earthquakes considering Dynamic-Soil-Structure-Interaction (DSSI) effects in soft clay (Vs<180 m/s ) and stiff clay (180<Vs<375 m/s). Opensees software that can simulate the dynamic time history analysis is used. Both kinematic and inertial interactions are considered and Finite Element Method (FEM) is used to solve DSSI. The direct method applies to 3D modeling of the layered soil and column-pile. A Pressure Independ Multi Yield Surface Plasticity Model is used to simulate different kinds of clay behavior. Time history seismic analyses provide for the mass and stiffness matrices to evaluate dynamic structural response with and without directivity effects for Near and Far Field earthquakes. Results show that the Multi-Yield-Surface-Kinematic-Plasticity-Model can be used instead of bilinear springs between piles and clay soil, for both Near Field and Far Field earthquakes. In addition, comparing Near and Far Field analyses, acceleration response spectrum at the top of the structure in the Far Field increases with the softness of the soil more than that in the Near field.