62 research outputs found

    Ancient hyper present

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    My practice, especially this virtual garden, is a collage made of media, images, and virtual space across different eras and time signatures. Graphic design can exist in a gallery, on the screen, inside headsets or in the streets. Like a lucid dream, it can be disorienting as it opens up to a more-than physical ground of experience; within the virtual, within shared memory. This reflective practice arises as a form of “anachronism.” Before I could arrive at my transdisciplinary practice that considers experiences of exile and diaspora, I had to grapple with a singular question: what does it mean to visualize and materialize nostalgia for a distant world? In my effort to answer, I learned to identify as both an architect of memory and an archivist of place, and allow my work to exist in a multiverse of fields, rather than in one space. To communicate the literal and transpersonal, Ancient Hyper Present gathers an array of forms: editorial, kinetic, typographic, spatial, and experiential. I call forth a practice of reflection, to go through the process of seeing the unseeable or the unacknowledged

    Computed Tomography Imaging Characteristics of Histologically Confirmed Papillary Renal Cell Carcinoma—Implications for Ancillary Imaging

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    Low-attenuation renal lesions on non-contrast computed tomography (CT) are often considered to be benign cysts without need for further imaging. However, the papillary subtype of renal cell carcinoma (RCC) may have similar radiographic characteristics. A single-center retrospective review was therefore performed to identify extirpated papillary RCC (pRCC) specimens with correlation made to preoperative tumor imaging characteristics. A total of 108 pRCC specimens were identified of which 84 (27 type I, 17 type 2, 40 unspecified) had CT imaging available for review. Non-contrast CT was available for 73 tumors with 16 (22%) demonstrating Hounsfield units (HU) measurements fewer than 20 at baseline without differences between papillary subtypes. Mean attenuation following contrast administration was similar between papillary subtypes (45 HU for type 1 pRCC and 49 HU for type 2). This study highlights that pathologically proven pRCC is a heterogeneous entity in terms of density on preoperative CT imaging. A non-contrast CT scan with HU fewer than 20 may not be an adequate evaluation for incidental renal masses, as over 1 in 5 pRCCs demonstrate lower attenuation than this cutoff. Further study is needed to identify the appropriate role of ancillary imaging in the workup of seemingly benign-appearing renal lesions

    Electrocatalytic oxidation of phenol from wastewater using Ti/SnO2–Sb2O4 electrode: chemical reaction pathway study

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    Abstract In this study, a titanium plate was impregnated with SnO2 and Sb (Ti/SnO2–Sb2O4) for the electrocatalytic removal of phenol from wastewater, and the chemical degradation pathway was presented. The effects of various parameters such as pH, current density, supporting electrolyte, and initial phenol concentration were studied. At optimum conditions, it was found that phenol was quickly oxidized into benzoquinone because of the formation of various strong radicals during electrolysis by the Ti/SnO2–Sb2O4 anode from 100 to <1 mg/L over 1 h. The results of GC/MS analysis showed the presence of some esters of organic acid such as oxalic acid and formic acid. HPLC analysis showed only trace amounts of benzoquinone remaining in the solution. The efficiency of TOC removal at the Ti/SnO2–Sb2O4 anode surface showed a degradation rate of 49 % over 2 h. Results showed that the molecular oxygen potential at the electrode was 1.7 V. The phenol removal mechanism at the surface of the Ti/SnO2– Sb2O4 anode was influenced by the pH. Under acidic conditions, the mechanism of electron transfer occurred directly, whereas under alkaline conditions, the mechanism can be indirect. This research shows that the proposed electrolyte can significantly influence the efficiency of phenol removal. It can be concluded that the treatment using an appropriate Ti/SnO2– Sb2O4 electrode surface can result in the rapid oxidation of organic pollutants

    Management of Residual or Recurrent Disease Following Thermal Ablation of Renal Cortical Tumors

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    Management of residual or recurrent disease following thermal ablation of renal cortical tumors includes surveillance, repeat ablation, or surgical extirpation. We present a multicenter experience with regard to the management of this clinical scenario. Prospectively maintained databases were reviewed to identify 1265 patients who underwent cryoablation (CA) or radiofrequency ablation (RFA) for enhancing renal masses. Disease persistence or recurrence was classified into one of the three categories: (i) residual disease in ablation zone; (ii) recurrence in the ipsilateral renal unit; and (iii) metastatic/extra-renal disease. Seventy seven patients (6.1%) had radiographic evidence of disease persistence or recurrence at a median interval of 13.7 months (range, 1–65 months) post-ablation. Distribution of disease included 47 patients with residual disease in ablation zone, 29 with ipsilateral renal unit recurrences (all in ablation zone), and one with metastatic disease. Fourteen patients (18%) elected for surveillance, and the remaining underwent salvage ablation (n = 50), partial nephrectomy (n = 5), or radical nephrectomy (n = 8). Salvage ablation was successful in 38/50 (76%) patients, with 12 failures managed by observation (3), tertiary ablation (6), and radical nephrectomy (3). At a median follow-up of 28 months, the actuarial cancer-specific survival and overall survival in this select cohort of patients was 94.8 and 89.6%, respectively

    Investigation of Performance of hybrid nanoparticles Tio2/Sio2 in removing of Mercury from industrial waste water

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    Introduction: Mercury is a toxic compound. Biological accumulation of mercury especially in aquatic organisms has brought about many health problems. Various methods have been used to remove heavy metals from industrial wastewater. Adsorption is one of the chemical and physical techniques. This method is useful due to high efficiency, easy usage and availability of its different types. This study was performed to evaluate removal efficiency of TiO2/SiO2 hybrid nanoparticle so as to remove mercury from industrial waste. Methods: This study is experimental and was conducted on synthetic and real samples of Binalood paint factory wastewater from October to February 2012. The chemical quality of raw wastewater was determined and synthetic solutions were prepared. Then the effect of pH (3, 5, 7 and 9), the amount of adsorbent (0.25, 0.5, 0.75 and 1 g/L), contact times (30, 60, 90, 120 minutes) and different concentrations of Hg (20, 30, 50, 70 and 90 mg/L) on removal efficiency were studied and optimal conditions were determined for each parameter. The same experiments were performed on real wastewater samples. Absorption kinetics and equilibrium isotherms were investigated to better understand the absorption processes. SPSS software version 16 was applied and regression test as well as pearson coefficients were used for data analysis. Results: The maximum percent of mercury removal was observed at pH=5, absorbent amount of 0.5 g/L and retention time of 30 minutes. Removal efficiency of synthetic and real solutions were 99.86% and 95.56%, respectively.It was found that mercury concentration of 50 mg/L causes the maximum removal percentage (99.86%).The results indicated that mercury adsorption follows Freundlich isotherm with a correlation coefficient of r2 = .56 and the first type synthetic reaction of r2=0.63. Conclusion: Due to high percentage of mercury removal at optimal conditions by hybrid nanoparticles, this method can be regarded as one of the effective ways to remove mercury compared with other methods

    Testosterone Therapy in Men with Klinefelter Syndrome: Analysis of a Global Federated Research Network

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    INTRODUCTION: The objective of this study was to determine the rates of hypogonadism and prescription of testosterone replacement therapy (TRT) in men with Klinefelter syndrome (KS). We hypothesized that men with KS are under-treated for testosterone deficiency with TRT due to a combination of factors, including a poor understanding of hypogonadism in this population and neurocognitive issues leading to delay in seeking of treatment for hypogonadism. MATERIALS & METHODS: We queried TriNetX, a large multicenter electronic health record database, to identify all men with a diagnosis of KS (ICD-10-CM Q98.4). Prevalence of testosterone deficiency was determined as defined by testosterone level < 300 ng/dL. The primary outcome of the study was prescription of any of the following forms of TRT on the day of diagnosis or later. RESULTS: There were in total 5437 men with diagnosis of KS. A total of 1581 men with KS received laboratory measurement of testosterone level, 1113 (70.4%) of whom were hypogonadal. Mean testosterone level in this group was 354 ng/dL [50–658]. Of the 1113 men found to be hypogonadal, only 657 (59.0%) men were given prescription for TRT. DISCUSSION & CONCLUSION: This is the first study to evaluate TRT prescribing habits in men with KS. In this large retrospective study, TRT was underprescribed in men with KS. Further studies are needed to corroborate these findings and to evaluate barriers to receiving care in this population

    “Likes” in Social Media: Does It Carry Any Implications?

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    Social media usage has drastically increased in recent years. In particular, social media usage among medical providers has become commonplace. It may offer a variety of benefits in the medical arena, with respect to information dissemination, health promotion, and education. However, the implications of social media usage and engagement remain to be seen. This narrative review aimed to describe and highlight the effects of social media usage and engagement and to provide guidance for engaging in social media as a medical professional. Our review demonstrates that active social media engagement unequivocally affords the urologist with meaningful opportunities for self-promotion, branding, education, networking, research, and enhanced recruitment efforts, but this engagement comes with the risk for burdensome exposure to misinformation and harassment. We encourage adherence with American Urological Association/European Association of Urology (AUA/EAU) social media best practices and provide our own recommendations for social media engagement

    An Update on the Outcomes of Patients Treated with Urolift for Benign Prostatic Hyperplasia

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    Justin Loloi,1 Nathan Feiertag,2 Kripali Gautam,2 Pedro Maria1 1Department of Urology, Montefiore Medical Center, Bronx, NY, USA; 2Albert Einstein College of Medicine, Bronx, NY, USACorrespondence: Pedro MariaDepartment of Urology, Montefiore Medical Center, Bronx, NY, 10467, USATel +1 718 920 4531Email [email protected]: Benign prostatic hyperplasia (BPH) is a ubiquitous urologic disease affecting aging men. Patients often experience bothersome lower urinary tract symptoms (LUTS) that warrant urologic evaluation and management. Routinely, patients are initially treated with medical therapies with the goal of both relaxing the bladder neck and shrinking the prostate in order to relieve obstruction secondary to prostatic enlargement. Transurethral resection of the prostate (TURP) serves as a first-line surgical intervention in those who fail medical therapy. Recently, novel minimally invasive surgical techniques for BPH management have emerged. Of these, prostatic urethral lift (PUL or Urolift) has gained attention given its presumed effectiveness and minimal risk of sexual side effects when compared to the standard TURP. The purpose of this review is to describe past and current trends in the implementation of PUL for BPH and to highlight important outcomes.Keywords: benign, prostate, minimally-invasive, urethral, urinary, sexua
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