849 research outputs found
Reducing the Reflection of Light in Side View Mirrors at Night using Electrochromism
Every automobile has rear view mirrors and side view mirrors to make it easier for the driver to look at the rear side of the vehicle easily. They help the driver in moving the vehicle backwards without anyone's assistance. Usually, the rear view mirrors are located at the top of the windscreen and they are adjustable according to the position and viewing angle of the driver. During night times, the light from the head lights of the vehicle behind is reflected and falls directly on the eyes of the driver. This light reflection from the rear view mirrors causes a strain on our eyes and results in our eyes becoming tired and drowsy, consequently results in lack of alertness and can result in an accident. People who drive for more than 100 miles during the night experience this type of strain in their eyes. This can be avoided by reducing the reflection of light from the side view mirrors by implementing the process of electro chromism in the mirrors. By means of this process, we will be introducing a glass that changes the intensity of reflection when a voltage is applied
A rare case of occupational lung disease – Talcosis
Talcosis/ Talcpneumoconiosis is one of the rarer forms of magnesium silicate induced lung disease, It usually occurs in the fourth decade and affects people working in talc related industries like roof, shingle, pharmaceutical companies, talcum powder industries, electric ceramics, rubber industry etc. We report a case of talc pneumoconiosis/talcosis in a 51yr old male who presented with breathlessness and dry cough for the past 5 yrs and progressively worsening for the past 5 days. Who was working in a talcum powder manufacturing company for >28yrs in the packaging section. The diagnosis was possible by history, clinical examination, Chest X-ray, PFT/DLCO, HRCT chest, Bronchoscopy & Trans bronchial lung biopsy showing interstitial fibrosis
Newcastle Disease Virus Detection From Chicken Organ Samples Using Reverse Transcriptase Polymerase Chain Reaction
Newcastle disease (ND) is a systemic, viral respiratory disease that is acute and easily transmitted which affects various types of poultry, especially chickens. Diagnosis of ND which generally involves virus isolation and subsequent identification with serological assays has limitations that needs more time. This research was aimed to detect Newcastle Disease virus (NDV) in chickens suspected with ND using the Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) technique. Nine chicken organ samples such as lien, trachea, and lungs were collected from chicken farms diagnosed with ND. The organ samples were processed and the targeted viral RNA was extracted using the RNA extraction kit. Genome amplification was performed with RT-PCR using specificprimers to target the F gene. Amplification results produced an amplicon product of 565 base pairs (bp). PCR product samples were then visualised using agar gel electrophoresis and viewed using the unified gel documentation system. Amplification results show nine samples positive for the DNA bands corresponding to the targeted band of the NDV F gene fragment. The results of this research confirm that the RT-PCR method is applicable for NDV detection from chicken organ samples
Assessing Financial Risk Tolerance and Investment Decisions among Malaysians. An exploratory study.
Today there is a vast amount of information on financial markets and financial institutions but not much is known about individual investors. This study is designed to create a profile of Malaysian individual investor investment behavior by classifying them into risk tolerance categories. It also explores whether demographic, socioeconomic and psychological factors can be used to predict individual financial risk tolerance. Using a sample of 287 respondents it was determined that Malaysians in general are only slightly above average financial risk takers. Their most preferred vehicles of investment are Fixed Deposits and Unit Trust Funds. Using a regression model, gender, employment status, economic expectation, having liquid assets and ethnic backgrounds were found to be effective in differentiating among levels of risk tolerance among Malaysians. However,education and income were not found to be significant determinants of an individual’s attitude towards risk. Current investment behavior among Malaysians shows them to be generally non investment savvy and indicates probability of financial problems in their later years. Financial Institutions and the Government may have to play a bigger role in overcoming this shortcoming to avoid potential political, economic and social problems in the future. The findings of this study provides an initial basis for assessing financial risk tolerance among Malaysians which can be utilized for more comprehensive future research
Design of shark skin collagen-aloe composite scaffold for tissue engineering
Se ha demostrado que el colágeno es un nuevo biomaterial utilizado para la administración de fármacos, la fabricación
de apósitos o como sustrato para ingeniería tisular cuya biocompatibilidad y propiedades biodegradables son
únicas. El colágeno bovino y porcino tipo I constituyen una fuente fácilmente disponible de material de soporte para
diversas aplicaciones biomédicas. Sin embargo, estas fuentes conllevan cierto riesgo potencial de enfermedades infecciosas
como la encefalopatía espongiforme bovina o la encefalopatía espongiforme transmisible. Por esta razón, existe
una demanda de colágeno tipo I procedente de otras fuentes. En el presente estudio, se utilizan animales acuáticos
y, en concreto, especies de tiburón en las que el colágeno tipo I es una proteína principal de la piel y la estructura
tiene similitud con la de las especies mamíferas. Se ha intentado utilizar colágeno de piel de tiburón como matriz
de soporte con extracto de aloe para mejorar la estabilidad. Estas matrices de soporte se caracterizaron por varias
propiedades fi sicoquímicas y por la evaluación de biocompatibilidad para facilitar el crecimiento de fi broblastos
dérmicos humanos in vitro. La incorporación de extracto de aloe infl uyó enormemente en la morfología y las propiedades
fi sicoquímicas de la matriz de soporte. Se observó in vitro que los fi broblastos conservaban la orientación
organizada en forma de huso al cultivarse sobre la matriz de soporte de colágeno. Así, la matriz de soporte de colágeno
desarrollada con una proporción de 10:1 de colágeno de piel de tiburón y extracto de aloe, respectivamente,
sirvió como material biocompatible con una resistencia a la tracción apreciable. La investigación anterior sugiere
que la matriz de soporte de colágeno de piel de tiburón desarrollada puede ser una alternativa efectiva al colágeno
de mamífero en el campo de la ingeniería tisular y para diversas aplicaciones en la curación de heridas.Collagen has proven to be a novel biomaterial used for drug delivery, wound cover dressings or as a substrate for tissue
engineering with unique biocompatibility and biodegradable properties. Bovine and porcine Type I collagen provide
a readily available source of scaffold material for various biomedical applications. However these sources have some
potential risk of infectious diseases such as bovine spongiform encephalopathy or transmissible spongiform encephalopathy.
Hence there is demand for an alternative Type I collagen from various other sources. The present study utilizes
the aquatic animals particularly the shark species in which collagen Type I is a major protein in the skin and the
structure has similarity to that of mammalian species. An attempt was made to use shark skin collagen as scaffold with
the extract of aloe to improve the stability. These scaffolds were characterized for various physicochemical properties
and biocompatibility assessment to support the growth of human dermal fi broblasts in vitro. The incorporation of aloe extract highly infl uenced the morphology and physicochemical properties of the scaffold. It was observed in vitro that
the fi broblasts retained the spindle shape, organized orientation when cultured over collagen scaffold. Thus the developed
collagen scaffold at 10: 1 ratio of shark skin collagen and aloe extract respectively served as a biocompatible material
with appreciable tensile strength. The above investigation suggests that the developed shark skin collagen scaffold could be
an effective alternative for the mammalian collagen for tissue engineering and various wound healing applications
Exploring Current Trends and Challenges in Cybersecurity: A Comprehensive Survey
Cyber security is the process of preventing unauthorized access, theft, damage, and interruption to computers, servers, networks, and data. It entails putting policies into place to guarantee the availability, confidentiality, and integrity of information and information systems. Cyber security seeks to protect against a variety of dangers, including as hacking, data breaches, malware infections, and other nefarious actions. Cyber security has grown to be a major worry as a result of the quick development of digital technology and the growing interconnection of our contemporary society. In order to gain insight into the constantly changing world of digital threats and the countermeasures put in place to address them, this survey seeks to study current trends and issues in the area of cyber security. The study includes responses from end users, business executives, IT administrators, and experts across a wide variety of businesses and sectors. The survey gives insight on important problems such the sorts of cyber threats encountered, the efficacy of current security solutions, future technology influencing cyber security, and the human elements leading to vulnerabilities via a thorough analysis of the replies. The most important conclusions include an evaluation of the most common cyber dangers, such as malware, phishing scams, ransom ware, and data breaches, as well as an investigation of the methods and tools used to counter these threats. The survey explores the significance of staff education and awareness in bolstering cyber security defenses and pinpoints opportunities for development in this area. The survey also sheds insight on how cutting-edge technologies like cloud computing, artificial intelligence, and the Internet of Things (IoT) are affecting cyber security practices. It analyses the advantages and disadvantages of using these technologies while taking into account issues like data privacy, infrastructure security, and the need for specialized skills. The survey also looks at the compliance environment, assessing how industry norms and regulatory frameworks affect cyber security procedures. The survey studies the obstacles organizations encounter in attaining compliance and assesses the degree of knowledge and commitment to these requirements. The results of this cyber security survey help to better understand the current status of cyber security and provide organizations and individual’s useful information for creating effective policies to protect digital assets. This study seeks to promote a proactive approach to cyber security, allowing stakeholders to stay ahead of threats and build a safe digital environment by identifying relevant trends and concerns
Numerical studies of steel channels with staggered slotted perforations subject to combined bending and shear actions
Cold-formed steel studs and purlins with staggered slotted perforations in webs are used in construction to improve thermal performance of the profiles and energy efficiency of structures. On the other hand, the web perforations adversely affect structural performance of the members, especially their shear, bending and combined bending and shear strengths. Relatively little research has been reported on this subject despite its importance. Many research studies have been carried out to evaluate the combined bending and shear behaviour of conventional cold-formed channel beams. To date, however, no investigation has been conducted into the strength of cold-formed steel channels with staggered slotted perforations under combined bending and shear actions. Finite element models of cold-formed steel channels with staggered slotted perforations were developed to simulate their combined bending and shear behaviour and strength. They were then validated by comparing the results with available experimental test results and used in a detailed parametric study. This paper presents the details of the numerical studies of cold-formed steel channels with staggered slotted perforations and the results
A Enhanced Approach for Identification of Tuberculosis for Chest X-Ray Image using Machine Learning
Lungs are the primary organs affected by the infectious illness tuberculosis (TB). Mycobacterium tuberculosis, often known as Mtb, is the bacterium that causes tuberculosis. When a person speaks, spits, coughs, or breathes in, active tuberculosis can quickly spread through the air. Early TB diagnosis takes some time. Early detection of the bacilli allows for straightforward therapy. Chest X-ray images, sputum images, computer-assisted identification, feature selection, neural networks, and active contour technologies are used to diagnose human tuberculosis. Even when several approaches are used in conjunction, a more accurate early TB diagnosis can still be made. Worldwide, this leads to a large number of fatalities. An efficient technology known as the Deep Learning approach is used to diagnose tuberculosis microorganisms. Because this technology outperforms the present methods for early TB diagnosis, Despite the fact that death cannot be prevented, it is possible to lessen its effects
Case Series of Triathletes with Takotsubo Cardiomyopathy Presenting with Swimming-Induced Pulmonary Edema
OBJECTIVES:
To report three cases of triathletes who presented with swimming-induced pulmonary edema (SIPE) following water immersion. They were subsequently diagnosed with Takotsubo cardiomyopathy (TCM).
DESIGN:
Retrospective case series.
METHOD:
All cases were recreational athletes competing in mass participation triathlons between June 2018 and 2019. They were initially managed by the event medical team and subsequently at the local tertiary level hospital. Written consent was gained from all the subjects.
RESULTS:
The three triathletes were aged between 50 and 60 years, two were females, and all presented with acute dyspnoea on exiting the water. Two also presented with chest pain and haemoptysis. A diagnosis of SIPE was suspected by the medical event team on initial presentation of low oxygen saturations and clinical signs of pulmonary oedema. All were transferred to the local emergency department and had signs of pulmonary oedema on chest radiographs. Further investigations led to a diagnosis of TCM with findings of T wave inversion in anterolateral electrocardiogram leads and apical hypokinesia on transthoracic echocardiogram and unobstructed coronary arteries.
CONCLUSIONS:
This case series presents triathletes diagnosed with SIPE and TCM following the open water swim phase. It is unclear whether the myocardial dysfunction contributed to causation of SIPE or was the result of SIPE. Mass participation race organizers must be prepared that both SIPE and TCM can present in this population. Those presenting with an episode of SIPE require prompt evaluation of their cardiac and pulmonary physiology. Further research is required to ascertain the exact nature of the relationship between TCM and SIPE
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