Improved Productivity with Multilaser Rotary Powder Bed Fusion Additive Manufacturing.

Laser powder bed fusion (LPBF) enables the fabrication of intricate, geometrically complex structures with a sufficiently fine surface finish for many engineering applications with a diversity of available feedstock metals. However, the production rate of LPBF systems is not well suited for mass production in comparison to traditional manufacturing methods. LPBF systems measure their deposition rates in 100's of grams per hour, while other processes measure in kilograms per hour or even in the case of processes such as forming, stamping, and casting, 100's of kilograms per hour.

Impact Performance of 3D Printed Spatially Varying Elastomeric Lattices.

Additive manufacturing is catalyzing a new class of volumetrically varying lattice structures in which the dynamic mechanical response can be tailored for a specific application. Simultaneously, a diversity of materials is now available as feedstock including elastomers, which provide high viscoelasticity and increased durability. The combined benefits of complex lattices coupled with elastomers is particularly appealing for anatomy-specific wearable applications such as in athletic or safety equipment.

Low Impact Velocity Modeling of 3D Printed Spatially Graded Elastomeric Lattices.

Additive manufacturing technologies have facilitated the construction of intricate geometries, which otherwise would be an extenuating task to accomplish by using traditional processes. Particularly, this work addresses the manufacturing, testing, and modeling of thermoplastic polyurethane (TPU) lattices. Here, a discussion of different unit cells found in the literature is presented, along with the based materials used by other authors and the tests performed in diverse studies, from which a necessity to improve the dynamic modeling of polymeric lattices was identified.

Additive manufacturing of LiNiMnCoO battery electrode material via vat photopolymerization precursor approach.

Additive manufacturing, also called 3D printing, has the potential to enable the development of flexible, wearable and customizable batteries of any shape, maximizing energy storage while also reducing dead-weight and volume. In this work, for the first time, three-dimensional complex electrode structures of high-energy density LiNiMnCoO (NMC 111) material are developed by means of a vat photopolymerization (VPP) process combined with an innovative precursor approach. This innovative approach involves the solubilization of metal precursor salts into a UV-photopolymerizable resin, so that detrimental light scattering and increased viscosity are minimized, followed by the in-situ synthesis of NMC 111 during thermal post-processing of the printed item.

Evaluating the association between food insecurity and risk of nephrolithiasis: an analysis of the National Health and Nutrition Examination Survey.

Purpose: This study aimed to investigate the relationship between self-reported food security and kidney stone formation.

Methods: Data were collected from the National Health and Nutrition Examination Survey (NHANES), a database representative of the United States population. Food security status was assessed using the US Household Food Security Survey Module: Six-Item Short Form.

Race and Ethnicity Have a Significant Effect on the Disclosure of Erectile Function: An Analysis of NHANES Response Patterns.

Objectives: To determine if race/ethnicity impacts disclosure of erectile function.

Methods: Data on age, education, erectile function, and past medical history were obtained from the National Health and Nutrition Examination Survey. Response rates to a single survey question regarding erectile function were calculated and compared between race/ethnicity groups.

Exploring the relationship between socioeconomic status and erectile dysfunction: an analysis of the National Health and Nutrition Examination Survey.

The aim of this study was to investigate the association between socioeconomic status and erectile dysfunction. Data were obtained from the National Health and Nutrition Examination Survey, a nationally representative survey of the United States population. Socioeconomic status was estimated using the poverty income ratio, a ratio of family income to established poverty levels.

Analysis of Twitter Engagement in a Progressively More Competitive Urology Match: A Mixed Methods Study.

Objective: To analyze Twitter engagement in response to the urology match during the COVID-19 pandemic.

Methods: Tweets containing the hashtags "#uromatch" or "#AUAmatch" during the 2021 and 2022 Match Week were reviewed. Date, author type and number of followers, general content, and engagement with each Tweet was collected.

Diagnosis and Treatment of a Mixed Epithelial Stromal Tumor of the Seminal Vesicle: A Systematic Review.

Objective: To perform a systematic review of mixed epithelial stromal tumor of the seminal vesicle (SV) to characterize the diagnosis and treatment of this rare condition.

Methods: "Seminal vesicle mixed epithelial stromal tumor" OR "seminal vesicle cystadenoma" were searched on PubMed/MEDLINE for relevant articles through 6 September 2021. Articles were eligible if they were in English, accessible via our university library services, and if the abstract was concordant with the content of the publication.

Immune cell profiles of patients with interstitial cystitis/bladder pain syndrome.

Interstitial cystitis/bladder pain syndrome (IC/BPS) is a disorder characterized by bladder pain upon filling which severely affects quality of life. Clinical presentation can vary. Local inflammatory events typify the clinical presentation of IC/BPS patients with Hunner lesions (IC/BPS-HL).

Powder Surface Roughness as Proxy for Bed Density in Powder Bed Fusion of Polymers.

Powder bed fusion of polymers is becoming increasingly adopted by a variety of industries to tailor the strength, weight and functionality of end-use products. To meet the high standards of the modern manufacturing industry, parts built with powder bed fusion require consistent properties and to be free of defects, which is intrinsically connected to the quality of the powder bed prior to melting. The hypothesis of this work is that the roughness of the top surface of an unmelted powder bed can serve as a proxy for the powder bed density, which is known to correlate with final part density.

National Trends and Prescription Patterns in Opiate Analgesia for Urolithiasis Presenting to Emergency Departments: Analysis of the National Hospital Ambulatory Medical Care Survey, 2006-2018.

Objective: To analyze the National Hospital Ambulatory Medical Care Survey (NHAMCS) database to determine geographic and temporal trends, as well as variables associated with the likelihood of receiving an opioid prescription for urolithiasis in United States (US) emergency departments (EDs).

Materials And Methods: All ED visits for urolithiasis between 2006 and 2018 in the NHAMCS database were analyzed. Age, race/ethnicity, insurance status, ED provider credentials, geographic region, and urban vs rural hospital status were extracted.

On-admission anemia predicts mortality in COVID-19 patients: A single center, retrospective cohort study.

Objectives: We investigated the impact of anemia based on admission hemoglobin (Hb) level as a prognostic risk factor for severe outcomes in hospitalized patients with coronavirus disease 2019 (COVID-19).

Methods: A single-center, retrospective cohort study was conducted from a random sample of 733 adult patients (age ≥ 18 years) obtained from a total of 4356 laboratory confirmed SARS-CoV-2 cases who presented to the Emergency Department of Montefiore Medical Center between March-June 2020. The primary outcome was a composite endpoint of in-hospital severe outcomes of COVID-19.

3D Printed Shape Memory Polymers Produced via Direct Pellet Extrusion.

Shape memory polymers (SMPs) are materials capable of changing their structural configuration from a fixed shape to a temporary shape, and vice versa when subjected to a thermal stimulus. The present work has investigated the 3D printing process of a shape memory polymer (SMP)-based polyurethane using a material extrusion technology. Here, SMP pellets were fed into a printing unit, and actuating coupons were manufactured.

Incidental Otolaryngologic Pathology Noted Upon Esophagogastroduodenoscopy: Case Series and Review of Literature.

Objectives: We report and analyze eight cases in which patients were referred from gastroenterology (GI) to otolaryngology following esophagogastroduodenoscopy (EGD). We aim to provide specific examples of head and neck pathology encountered by gastroenterologists during upper endoscopy.

Methods: A series of eight cases between 2016 and 2019 were analyzed by chart review.

The Mechanical Properties of Fiber Metal Laminates Based on 3D Printed Composites.

The production and mechanical properties of fiber metal laminates (FMLs) based on 3D printed composites have been investigated in this study. FMLs are structures constituting an alternating arrangement of metal and composite materials that are used in the aerospace sector due to their unique mechanical performance. 3D printing technology in FMLs could allow the production of structures with customized configuration and performance.

Multiprocess 3D printing for increasing component functionality.

Layer-by-layer deposition of materials to manufacture parts-better known as three-dimensional (3D) printing or additive manufacturing-has been flourishing as a fabrication process in the past several years and now can create complex geometries for use as models, assembly fixtures, and production molds. Increasing interest has focused on the use of this technology for direct manufacturing of production parts; however, it remains generally limited to single-material fabrication, which can limit the end-use functionality of the fabricated structures. The next generation of 3D printing will entail not only the integration of dissimilar materials but the embedding of active components in order to deliver functionality that was not possible previously.

Microstructural and Process Characterization of Conductive Traces Printed from Ag Particulate Inks.

Conductive inks are key enablers for the use of printing techniques in the fabrication of electronic systems. Focus on the understanding of aspects controlling the electrical performance of conductive ink is paramount. A comparison was made between microparticle Ag inks and an Ag nanoparticle ink.