scholarly journals Recently employed engineering techniques to reduce the spread of COVID-19 (corona virus disease 2019): a review study

2021 ◽  
Vol 22 (1) ◽  
pp. 277
Author(s):  
Bander Saman ◽  
Mahmoud M. A. Eid ◽  
Marwa M. Eid
Keyword(s):  
Thermal Imaging ◽  
Preventive Measures ◽  
Virus Disease ◽  
Physical Therapy Modalities ◽  
Human Immune System ◽  
Infrared Thermal Imaging ◽  
Human Element ◽  
Global Health Care ◽  
Review Study ◽  
Human Immune

<span>The main challenges of today’s global health care system are to reach to strong healthcare system, to provide effective methods to eliminate the increase in the number of dead and infected with virus of COVID-19. Therefore, during the last few months, the great importance and efficacy of a variety of engineering techniques that have greatly contributed in curbing the spread of the COVID-19, and evenly help to eliminate it according to recent scientific studies was highly prominent. Among these promising technologies in this field we mention, but not limited to, the use of ultraviolet (UV) rays to disinfection of air and surfaces. In addition, thermal imaging technology, which was employed using infrared radiation for monitoring people in crowded areas and human groups to determine who have abnormal temperatures, so that all preventive measures are taken. Robots have also been used and harnessed to perform many tasks that limit the spread of the virus and maintain the integrity of the human element. Last but not least, facial recognition techniques have also been used to limit the spread of this pandemic. Ultraviolet radiation is one of physical therapy modalities that can be used to increase the efficiency of human immune system to fight the virus. In conclusion UV radiation, infrared thermal imaging, robotics, AFR technologies are now widely used to reduce the spread of this virus and manage the outbreak.</span>

Medidas para prevenção de recidivas de úlceras venosas

2020 ◽  
Vol 10 (31) ◽  
pp. 96-104
Author(s):  
Caroline Muller Almeida ◽  
Suelen Elias da Veiga Freitas ◽  
Aline Affonso Luna ◽  
Cintia Silva Fassarella ◽  
Priscilla Alfradique de Souza
Keyword(s):  
Relapse Prevention ◽  
Selection Criteria ◽  
Preventive Measures ◽  
Venous Ulcer ◽  
Limiting Factor ◽  
Venous Ulcers ◽  
Ulcer Relapse ◽  
Varicose Ulcer ◽  
Key Word ◽  
Review Study

Identificar e analisar evidências científicas adotadas na prevenção de recidivas de úlceras venosas. Trata-se de um estudo de revisão integrativa da literatura, descritivo, de abordagem qualitativa, realizado entre outubro e novembro de 2017, a partir de consulta de bases de dados nacionais e internacionais. Os descritores utilizados foram “úlcera venosa”, “úlcera varicosa”, “recidiva” associados à palavra chave “prevenção”. Recorreu análise temática de conteúdo, emergindo duas categorias. Dos 305 artigos encontrados, 10 foram selecionados atendendo aos critérios de seleção. As principais evidências observadas foram “medidas para a prevenção de recidivas de úlceras venosas” e “facilidades e dificuldades da implementação de medidas preventivas”. Evidenciou-se que as medidas são diversas para prevenir as recidivas de úlcera venosa, no entanto, a adesão ainda é fator limitador as práticas devido à complexidade que a envolve.Descritores: Úlcera Venosa, Recidiva, Prevenção. Measures to prevent recurrence of venous ulcersAbstract: To identify and analyze scientific evidences adopted in the prevention of venous ulcers recurrences. It is an integrative literature review study, descriptive, with a qualitative approach, carried out between October and November 2017, based on consultation of national and international databases. The descriptors used were "venous ulcer", "varicose ulcer", "relapse" associated with the key word "prevention". It resorted to thematic analysis of content, emerging two categories. Of the 305 articles found, 10 were selected according to the selection criteria. The main evidences observed were "measures for the prevention of relapses of venous ulcers" and "facilities and difficulties of the implementation of preventive measures". It was evidenced that the measures are diverse to prevent the recurrence of venous ulcer, however, adherence is still a limiting factor to the practices due to the complexity that involves it.Descriptors: Venous Ulcer, Relapse, Prevention. Medidas para la prevención de recidivas de úlceras venosasResumen: Identificar y analizar evidencias científicas adoptadas en la prevención de recidivas de úlceras venosas. Este es un estudio integrador de revisión de literatura, descriptivo, con un enfoque cualitativo, realizado entre octubre y noviembre de 2017, basado en la consulta de bases de datos nacionales e internacionales. Los descriptores utilizados fueron "úlcera venosa", "úlcera varicosa", "recidiva" asociados a la palabra clave "prevención". Se recurrió análisis temático de contenido, emergiendo dos categorías. De los 305 artículos encontrados, 10 fueron seleccionados atendiendo a los criterios de selección. Las principales evidencias observadas fueron "medidas para la prevención de recidivas de úlceras venosas" y "facilidades y dificultades de la aplicación de medidas preventivas". Se evidenció que las medidas son diversas para prevenir las recidivas de úlcera venosa, sin embargo, la adherencia todavía es factor limitante en las prácticas debido a la complejidad que la envuelve.Descriptores: Úlcera Varicosa, Recurrencia, Prevención.

Mother Culture, Meet Mother Nature

2018 ◽  
Author(s):  
Luc Faucher ◽  
Pierre Poirier
Keyword(s):  
Evolutionary Algorithms ◽  
Cultural Change ◽  
Evolutionary Information ◽  
Multiple Forms ◽  
Human Immune System ◽  
Units Of Selection ◽  
Pluralistic Approach ◽  
Human Immune ◽  
Plausible Theory ◽  
Different Time Scales

Research on the adaptive characteristics of the human immune system reveals that evolutionary algorithms are not strictly matters of replication. And research in genomics suggests that there is no a single source of evolutionary information that carries the same content in every environment. A plausible theory of cultural evolution must acknowledge the possibility that multiple selective algorithms are operating at different time-scales, on different units of selection, with different logical structures; but it must explain how different selective processes are interfaced to yield culturally stable phenomena. This paper advances an empirically plausible approach to memetics that recognizes a wider variety of evolutionary algorithms; and it advances a pluralistic approach to cultural change. Finally, it shows that multiple forms of processing, operating at different timescales, on different units of selection, collectively sustain the human capacity to form and use certain types of representations.

Infrared thermal imaging denoising method based on second-order channel attention mechanism

2021 ◽  
pp. 103789
Author(s):  
Zhuo Li ◽  
Shaojuan Luo ◽  
Meiyun Chen ◽  
Heng Wu ◽  
Tao Wang ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Second Order ◽  
Attention Mechanism ◽  
Denoising Method ◽  
Infrared Thermal Imaging

scholarly journals Metabolic Swifts Govern Normal and Malignant B Cell Lymphopoiesis

2021 ◽  
Vol 22 (15) ◽  
pp. 8269
Author(s):  
Aikaterini Poulaki ◽  
Stavroula Giannouli
Keyword(s):  
B Cell ◽  
B Lymphocytes ◽  
Control Program ◽  
Memory B Cells ◽  
Immunologic Memory ◽  
Human Immune System ◽  
B Cell Malignancies ◽  
Stringent Control ◽  
Human Immune ◽  
New Research

B lymphocytes are an indispensable part of the human immune system. They are the effective mediators of adaptive immunity and memory. To accomplish specificity against an antigen, and to establish the related immunologic memory, B cells differentiate through a complicated and strenuous training program that is characterized by multiple drastic genomic modifications. In order to avoid malignant transformation, these events are tightly regulated by multiple checkpoints, the vast majority of them involving bioenergetic alterations. Despite this stringent control program, B cell malignancies are amongst the top ten most common worldwide. In an effort to better understand malignant pathobiology, in this review, we summarize the metabolic swifts that govern normal B cell lymphopoiesis. We also review the existent knowledge regarding malignant metabolism as a means to unravel new research goals and/or therapeutic targets.

The use of infrared thermal imaging in tonometry with a Scheimpflug camera

2021 ◽  
Vol 96 ◽  
pp. 102823
Author(s):  
Magdalena Jędzierowska ◽  
Robert Koprowski ◽  
Sławomir Wilczyński ◽  
Dorota Tarnawska
Keyword(s):  
Thermal Imaging ◽  
Infrared Thermal Imaging ◽  
Scheimpflug Camera

721 AT1412, a patient-derived CD9 antibody in preclinical development promoting tumor immune infiltration and inducing tumor rejection

2020 ◽  
Vol 8 (Suppl 3) ◽  
pp. A763-A763
Author(s):  
Remko Schotte ◽  
Julien Villaudy ◽  
Martijn Kedde ◽  
Wouter Pos ◽  
Daniel Go ◽  
...  
Keyword(s):  
T Cells ◽  
Immune System ◽  
T Cell ◽  
Tumor Cells ◽  
Tumor Rejection ◽  
Human Immune System ◽  
Preclinical Development ◽  
High Affinity ◽  
Human Immune ◽  
A375 Melanoma

BackgroundAdaptive immunity to cancer cells forms a crucial part of cancer immunotherapy. Recently, the importance of tumor B-cell signatures were shown to correlate with melanoma survival. We investigated whether tumor-targeting antibodies could be isolated from a patient that cured (now 13 years tumor-free) metastatic melanoma following adoptive transfer of ex vivo expanded autologous T cells.MethodsPatient‘s peripheral blood B cells were isolated and tested for the presence of tumor-reactive B cells using AIMM’s immmortalisation technology. Antibody AT1412 was identified by virtue of its differential binding to melanoma cells as compared to healthy melanocytes. AT1412 binds the tetraspanin CD9, a broadly expressed protein involved in multiple cellular activities in cancer and induces ADCC and ADCP by effector cells.ResultsSpontaneous immune rejection of tumors was observed in human immune system (HIS) mouse models implanted with CD9 genetically-disrupted A375 melanoma (A375-CD9KO) tumor cells, while A375wt cells were not cleared. Most notably, no tumor rejection of A375-CD9KO tumors was observed in NSG mice, indicating that blockade of CD9 makes tumor cells susceptible to immune rejection.CD9 has been described to regulate integrin signaling, e.g. LFA-1, VLA-4, VCAM-1 and ICAM-1. AT1412 was shown to modulate CD9 function by enhancing adhesion and transmigration of T cells to endothelial (HUVEC) cells. AT1412 was most potently enhancing transendothelial T-cell migration, in contrast to a high affinity version of AT1412 or other high affinity anti-CD9 reference antibodies (e.g. ALB6). Enhanced immune cell infiltration is also observed in immunodeficient mice harbouring a human immune system (HIS). AT1412 strongly enhanced CD8 T-cell and macrophage infiltration resulting in tumor rejection (A375 melanoma). PD-1 checkpoint blockade is further sustaining this effect. In a second melanoma model carrying a PD-1 resistant and highly aggressive tumor (SK-MEL5) AT1412 together with nivolumab was inducing full tumor rejection, while either one of the antibodies alone did not.ConclusionsThe safety of AT1412 has been assessed in preclinical development and is well tolerated up to 10 mg/kg (highest dose tested) by non human primates. AT1412 demonstrated a half-life of 8.5 days, supporting 2–3 weekly administration in humans. Besides transient thrombocytopenia no other pathological deviations were observed. No effect on coagulation parameters, bruising or bleeding were observed macro- or microscopically. The thrombocytopenia is reversible, and its recovery accelerated in those animals developing anti-drug antibodies. First in Human clinical study is planned to start early 2021.Ethics ApprovalStudy protocols were approved by the Medical Ethical Committee of the Leiden University Medical Center (Leiden, Netherlands).ConsentBlood was obtained after written informed consent by the patient.

Sign in / Sign up

Export Citation Format

Share Document