Search results for "CEM"
showing 10 items of 3487 documents
Efficient Consecutive Synthesis of Ethyl-2-(4-Aminophenoxy) Acetate, a Precursor for Dual GK and PPARγ Activators, X-ray Structure, Hirshfeld Analysi…
2022
Herein, we report a facile synthesis of ethyl-2-(4-aminophenoxy)acetate 4 as a building synthon for novel dual hypoglycemic agents. This building template was synthesized by alkylation of 4-nitrophenol with ethyl bromo-acetate followed by selective reduction of the nitro group. This reduction methoddoes not require nascent hydrogen or any reaction complexity; it goes easily via consecutive reaction in NH4Cl/Fe to yield our target synthon as very pure crystals. This product was characterized by 1HNMR, 13CNMR, COSY, NOESY NMR spectroscopy, and elemental analysis. Additionally, its structure was studied and approved by X-ray single crystal structure determination. The unit cell parameters are …
Emotions toward cognitive enhancement technologies and the body – Attitudes and willingness to use
2020
While technological development is becoming more integrated into our surrounding environments, it is also moving closer towards the human body. In fact, numerous examples can be seen in which information technology (IT) is being designed not just for use on the body, but also inside it. Technologies dominating this domain can be described as ‘cognitive enhancement technologies’ (CETs). These technologies are intended to enhance people's cognitive capabilities, and can be viewed in the forms of implants, lens, drugs, and then moving outward, smart clothing, watches and physical environments to name some. The present study focused on measuring peoples’ (N=104) emotions towards and willingness…
LE FATTISPECIE ILLECITE DECEMVIRALI IN MATERIA AGRICOLA
2012
Restoration and Enhancement of Historical Stereo Photos
2021
Restoration of digital visual media acquired from repositories of historical photographic and cinematographic material is of key importance for the preservation, study and transmission of the legacy of past cultures to the coming generations. In this paper, a fully automatic approach to the digital restoration of historical stereo photographs is proposed, referred to as Stacked Median Restoration plus (SMR+). The approach exploits the content redundancy in stereo pairs for detecting and fixing scratches, dust, dirt spots and many other defects in the original images, as well as improving contrast and illumination. This is done by estimating the optical flow between the images, and using it …
Space-Frequency Quantization for Image Compression With Directionlets
2007
The standard separable 2-D wavelet transform (WT) has recently achieved a great success in image processing because it provides a sparse representation of smooth images. However, it fails to efficiently capture 1-D discontinuities, like edges or contours. These features, being elongated and characterized by geometrical regularity along different directions, intersect and generate many large magnitude wavelet coefficients. Since contours are very important elements in the visual perception of images, to provide a good visual quality of compressed images, it is fundamental to preserve good reconstruction of these directional features. In our previous work, we proposed a construction of critic…
Effects of diabetes on the osseointegration of dental implants
2007
The increased prevalence of diabetes mellitus has become a public health problem. Hyperglycaemia entails a rise in the morbidity and mortality of these patients. Although a direct relationship with periodontal disease has already been shown, little is known about the results of dental implants in diabetics. The present paper reviews the bibliography linking the effect of diabetes on the osseointegration of implants and the healing of soft tissue. In experimental models of diabetes, a reduced level of bone-implant contact has been shown, and this can be reversed by means of treatment with insulin. Compared with the general population, a higher failure rate is seen in diabetic patients. Most …
On the Modeling of Transcatheter Therapies for the Aortic and Mitral Valves: A Review
2022
Transcatheter aortic valve replacement (TAVR) has become a milestone for the management of aortic stenosis in a growing number of patients who are unfavorable candidates for surgery. With the new generation of transcatheter heart valves (THV), the feasibility of transcatheter mitral valve replacement (TMVR) for degenerated mitral bioprostheses and failed annuloplasty rings has been demonstrated. In this setting, computational simulations are modernizing the preoperative planning of transcatheter heart valve interventions by predicting the outcome of the bioprosthesis interaction with the human host in a patient-specific fashion. However, computational modeling needs to carry out increasingl…
Health Beliefs of Wearing Facemasks for Influenza A/H1N1 Prevention : A Qualitative Investigation of Hong Kong Older Adults
2019
Although vaccination is the first-line strategy controlling and preventing influenza A/H1N1 for older adults, personal protective measures, such as wearing facemasks, are also important preventive behaviors to reduce the risk of becoming infected with influenza A/H1N1 during a pandemic. In the current study, we aimed to explore the belief-related psychological factors of wearing facemasks for influenza A/H1N1 prevention in a sample of Hong Kong older adults. Community-dwelling Chinese adults (N = 137) aged between 65 and 80 years (Mage = 75.10; SDage = 6.49) participated in semistructured interviews. Data were analyzed using theoretical thematic analysis and identified themes were matched d…
Estudio farmacológico de los IPDE5 e IPDE5/NO en modelos in vitro de disfunción endotelial
2020
La morbilidad cardiovascular es la principal causa de muerte en pacientes diabéticos. La fisiopatología de estas alteraciones vasculares aun no está del todo dilucidada. La hiperglucemia, característica principal de la diabetes, exacerba las complicaciones macrovasculares y las complicaciones microvasculares como la retinopatía, la nefropatía o el pie diabético. La elevación de la glucosa en sangre conduce a una alteración de la función del endotelio, modificando algunas de sus funciones básicas como la regulación del tono y crecimiento vascular o la coagulación sanguínea. La disfunción endotelial se produce en gran medida por el estrés oxidativo y la formación de radicales libres de oxigen…
Spunti per una rilettura della disciplina giuridica degli internet service provider
2017
The essay addresses the issue of the so called Internet Service Provider's Liability under artt. 12-14 dir. 00/31, with specific regard to the violations of copyright. The study aims at demonstrating that European Law on ISP is not a law on tort, but regulates a sphere of lawful action in favor of Internet Service Providers. The analysis of the Court of Justice's case-law reveals that the primary remedy against offenses committed on the internet is an injunction, while damages are only a secondary relief. This confirms the hypothesis that artt. 12-14 dir. 00/31 draw the perimeter of the legitimate activity of the Internet Service Provider. The essay ends with a re-interpretation of the Ital…