135 research outputs found

    CARDED AND COMBED YARN EFFECT ON FINISHED FABRIC QUALITY

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    Now a day’s most of the buyer of textile industry throughout the world is looking for best quality product. Often buyers are asking to produce finished product from carded or combed yarn. So knowing the performance of product made from cared or combed yarn is getting higher day by day. Yarn is the fundamental unit of fabric. Yarn contains a lot of properties (variables) which can affect dyed fabric finished quality. Carded and combed yarns of same GSM have many different properties because of different manufacturing process. Combed yarn is of superior quality and carded yarn is of inferior quality. The main purpose of this project is to find out or investigate carded and combed yarn effect on dyed fabric finished quality such as Color fastness properties(Rubbing, Wash, Perspiration, K/S value)

    CARDED AND COMBED YARN EFFECT ON FINISHED FABRIC QUALITY

    Get PDF
    Now a day’s most of the buyer of textile industry throughout the world is looking for best quality product. Often buyers are asking to produce finished product from carded or combed yarn. So knowing the performance of product made from cared or combed yarn is getting higher day by day. Yarn is the fundamental unit of fabric. Yarn contains a lot of properties (variables) which can affect dyed fabric finished quality. Carded and combed yarns of same GSM have many different properties because of different manufacturing process. Combed yarn is of superior quality and carded yarn is of inferior quality. The main purpose of this project is to find out or investigate carded and combed yarn effect on dyed fabric finished quality such as Color fastness properties(Rubbing, Wash, Perspiration, K/S value)

    Periodontal Management of Non Healing Endodontic Lesion– A Case Report

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    The fact that the periodontium is anatomically interrelated with the dental pulp by virtue of apical foramina and lateral canals creates pathways for exchange of noxious agents between the two tissue compartments when either or both of the tissues are diseased. Proper diagnosis of the various disorders affecting the periodontium and the pulp is important to exclude unnecessary and even detrimental treatment. This is a clinical case report of an enododontic–periodontic lesion in relation to lower left central incisor. Root canal treatment has been done with the respected tooth six months ago, but the lesion showed no sign of healing resulting in draining sinus and increasing pocket depth. Radiographic examination revealed over-obturation of gutta-percha with peri-radicular pathology. Periodontal flap surgery was performed and the defect was filled with bone graft mixed with Platelet rich plasma (PRP) and covered by platelet rich fibrin (PRF). Patient reviewed for six months which showed uneventful healing and no recurrence of the lesion

    Fabrication and Characterization of Flexible Three-Phase ZnO-Graphene-Epoxy Electro-Active Thin-Film Nanocomposites: Towards Applications in Wearable Biomedical Devices

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    Perovskite oxides have been used as sensors, actuators, transducers, for sound generation and detection, and also in optical instruments and microscopes. Perovskite halides are currently considered as optoelectronic devices such as solar cells, photodetectors, and radiation detection, but there are major issues with stability, interfacial recombination, and electron/hole mobility. The following work looks into the fabrication of non-toxic ZnO-based lead-free alternatives to perovskite oxides for use as secondary sensors or electron transport layers along with perovskite halides for application in stacked biomedical wearable devices. Three-phase, lead-free, Zinc Oxide-Graphene-Epoxy electroactive nanocomposite thin films were fabricated. The volume fraction of the Graphene phase was held constant at 10%, while the volume fraction of the ZnO phase was varied from 10–70%. The dielectric constant, capacitance, impedance, resistance, and conductance of the samples were measured using an impedance analyzer, and the results were compared as a function of volume fraction of ZnO to understand the electron transport performance of these thin films. The impedance and dielectric spectra of the nanocomposites were recorded over a frequency range of 20 Hz to 10 MHz. The microstructural properties and cross-section of the thin films were analyzed using a Scanning Electron Microscope. The high sensitivity and electron transport properties of the composite could be potentially utilized in biomedical devices at low- and high-frequency ranges

    Capacitive sensing for non-contact means of measurement

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    Capacitive sensors exhibit an electrical property called "capacitance" on the way to carry out the measurements. Capacitance is particularly defined for two conducting objects, across which the potential difference is connected. The plates are separated by an electrical insulating material named as dielectric that helps the parallel plates to uphold the stored electrical charges. Capacitive sensors are indeed capable of sensing a wide range of things-motion, chemical composition, presence of gaseous components, electric field straightforwardly. On the other hand, in an indirect manner, these sensors can also sense some variables which can be converted into motion or dielectric constant, such as pressure, acceleration, fluid level, and fluid compositio

    Contact type and noncontact type gas flow measuring sensors

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    Gas flow measurement is required in numerous applications; particularly in oil, and gas, nuclear energy, chemical proccssing illdustrics including food, pharmaceutical indUSlryand in agricultural sectors. Gas flow occurs in heat el<changers, steam generators, chemical reactors, oil transportation and other process equipment items. Hence the importance of measuring an accurate flow rate of gascs in pipelincs has been everincreasing in the industrialized regions. Gcnerally any type of gas flow measurement processcs requires gross measurements at some points while more accurate measurements at some other points. As the industry develops it undergoes changes for more comfortable user friendly way of gas flow measurement with improved accuracy. This is coupled with research activities catching demands for exploring alternative non-contact means of electronic measurement, thus putting into fCsearch more of an accurate and reliable measurement rather lIIan just measurement. On tOp of this more customers' awareness is stressing for reliable and robust transducers requiring minimum operation cost with least possibility of industry shutting down just for maintCllllllce reasons, causing loss in revenue

    Periodontal Treatment Practice and Referral Profile of General Dentists – A Cross-sectional Questionnaire Survey

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    BACKGROUND: Because of medical advancement, the mean age of the general population is increasing gradually. This increase in the mean age of patients has led to its implications on oral health. Hence, it is logical to assume an increase in the figure of referrals to specialists and the complexity of treatments provided. AIM: The aim of the survey was to assess the current status of periodontal treatment provided, awareness of referral profile, and criteria taken into consideration for the referral to the periodontist by general dentists. MATERIALS AND METHODS: This cross-sectional questionnaire study was conducted among 318 general dentists. The relevant work related to the status of periodontal procedures provided by dentists and their referral relationships were studied. The questionnaire consisting of six questions was designed. Descriptive statistics, including frequency distributions and measures of central tendency and Chi-square test, were used. RESULTS: The study showed that majority of the general dentists do non-surgical procedures by their own. However, around 85% of respondents did not provide surgical periodontal treatment by themselves. About 25% of the responding general dentists thought that they had inadequate education and experience in the field of periodontics which was a major reason for the referral to specialists. CONCLUSION: It was concluded that the general dentists are comfortable in carrying out the non-surgical procedures, but they had some reservations about the periodontal surgical procedures. Inadequate experience and facilities were the major reasons for the referral to periodontists. More of this type of study should be conducted to know the basic level of periodontal practices carried out among the general dentists and about the referral to the specialists

    FAPMIC: Fake Packet and Selective Packet Drops Attacks Mitigation By Merkle Hash Tree in Intermittently Connected Networks

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    Delay/Disruption Tolerant Networks (DTNs) are a special category of IntermittentlyConnectedNetworks (ICNs). It has features such as long-delay, frequent-disruption, asymmetrical-data-rates, and high-bundle-error-rates. DTNs have been mainly developed for planet-to-planet networks, commonly known as Inter-Planetary-Networks (IPNs). However, DTNs have shown undimmed potency in challenged communication networks, such as DakNet, ZebraNet, KioskNet and WiderNet. Due to unique characteristics (Intermittent-connectivity and long-delay) DTNs face tough/huge/several challenges in various research areas i.e bundle-forwarding, key-distribution, privacy, bundle-fragmentation, and malicious/selfish nodes particularly. Malicious/selfish nodes launch various catastrophic attacks, this includes, fake packet attacks, selective packet drops attacks, and denial-of-service/flood attacks. These attacks inevitably consume limited resources (persistent-buffer and bandwidth) in DTNs. Fake-packet and selective-packet-drops attacks are top among the challenging attacks in ICNs. The focus of this article is on critical analyses of fake-packet and selective-packet-drops attacks. The panoramic view on misbehavior nodes mitigation algorithms are analyzed, and evaluated mathematically through several parameters for detection probability/accuracy. This article presents a novel algorithm to detects/mitigates fake-packet and selective-packet-drops attacks. Trace-driven simulation results show the proposed algorithm of this article accurately (enhanced detection accuracy, reduces false-positive/false-negative rates) detects malicious nodes which launch fake-packet and selective-packet-drops attacks, unlike previously proposed algorithms which detect only one attack (fake-packet or packet-drops at a time) or detect only malicious path (do not exactly detect malicious nodes which launch attacks)

    Prediction of crack depth and fatigue life of an acrylonitrile butadiene styrene cantilever beam using dynamic response

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    n this article, a methodology is proposed that can be used to predict the crack growth and fatigue life of a cantilever beam made of Acrylonitrile Butadiene Styrene (ABS) manufactured with fused deposition modeling. Three beam configurations based on length (L = 110, 130, and 150 mm) are considered. Empirical relationships are formulated between the natural frequency and the crack growth. The analytical and experimental results are found to be in good agreement for all configurations. Using the experimental data, a global relation is formulated for the crack depth prediction. This global relation is useful for an in situ crack depth prediction with an error of less than 10 %. Later, a residual fatigue life of these specimens is compared with a metallic structure (Aluminum 1050) of similar configuration available in the literature. It is found that the ABS material has more residual fatigue life compared with the metallic structure at the same frequency drop. Based on the remaining fatigue life, ABS material can be a potential material to manufacture machine components under cyclic loads

    Explore and compare the knowledge, attitude, and acceptance of dental implant as a treatment option among sub-population of Saudi Arabia

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    Objectives: Implant therapy has gained wide popularity in the recent years. A complete information on implant therapy should be provided to patient by the dentist. The aim of present study is to evaluate the knowledge, attitude, source of information and acceptance of dental implants among the general population in the Southern region of Saudi Arabia.Methods: A total of 712 patients were randomly selected from the OPD of dental hospitals across the southern region of Saudi Arabia. The designed questionnaire comprised of 15 open-ended questions. Only Saudi national population was selected for the survey. The questionnaire was divided into demographic data, knowledge, attitude and participant’s acceptance towards implant therapy. The collected data were statistically analyzed using the Statistical Package for Social Sciences.Results: Out of 712 participants, 675 complete the survey. 59.1% were male and 41.9% were females with an average age of 39.6 years old. All variables except for age showed statistically significant difference in the knowledge about implant among the study groups (p&lt;0.05). The knowledge score was directly related to education and professional status of the participants. Majority of the patients (66%) with a history of implant therapy were satisfied with the placed implant. 41% of the participants reported high cost as a limiting factor for selecting an implant treatment. Conclusions: Population from the southern region of Saudi Arabia has moderate knowledge about dental implant treatment. Dentists were found to be the most important source of information to the patient. The major barrier for not selecting implant treatment was the high cost of the implant therapy
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