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Myocardial Infarction otherwise called heart attack occurs in human beings when blood flow decreases or stops to a part of the heart which in turn damages the heart muscle. Prediction of abnormalities in cardio arrhythmia disease is done by using standard 12-lead Electrocardiography (ECG) signals, which also detects Posterior Myocardial Infarction (PMI). The QRS complex is the merged output of different parts of graphical deflection seen on a typical Electro Cardio Gram (Electrocardiography). The main purpose of the paper is to monitor and analyze particularly the Rpeak upward deflections from the QRS complex. Denoising the ECG signal is done by butter worth filter. The denoised signals are used to detect R peaks and image plotting is done by segmentation. R peak images are used to classify the abnormalities in Myocardial Infarction (MI) with the help of the CNN image processing technique. The publicly available PTB diagnostic dataset is used to classify the abnormalities in PMI. The detection of the R peaks is used to guide Cardiologists must advance the Percutaneous Coronary Intervention treatment. Prediction has been done using probability weighted average method. Troponin level has been calculated to evaluate a person's health condition which also supports in close prediction of diseases and abnormalities. From experimental analysis of proposed Probability weighted average method in troponin level (PWAMT), the accuracy scores in the ensemble model were found to be 86 % respectively. The running of algorithm took 250 s–300 s to execute the program and display the prediction results.

Abstract Piezoelectric response from two-dimensional layered materials with semiconducting properties is important for developing nanogenerators, piezotronics, and piezophototronics devices. However, experimental observation of piezoelectricity and semiconductor properties in monoatomic borophene has been a key challenge for the fabrication of nanogenerator devices. Here, we discover the non-centrosymmetric blue light emitting piezoelectric properties of few layered monoatomic borophene nanosheets. We develop the flexible piezoelectric nanogenerator using few layered borophene nanosheets in polydimethylsiloxane polymer, producing an output voltage of 8 V without electrical poling. The material exhibits a high piezoelectric charge coefficient (d33) of 86 pm V−1 and shows band gap opening with a high band gap of 2.32 eV. Surprisingly, the borophene nanosheets exhibit blue light emission under UV light illumination. Under UV light illumination, the device dramatically improves output performance. We find that the material exhibits a high dielectric constant of about 125 at low frequency.

COVID-19 belongs to a typical class of viruses that predominantly affects the human respiratory system, thereby proving to be fatal to many. The virus, along with other air pollutant particulates poses a severe threat to the human respiratory organs. Since the most common transmission mode is respiratory fomites and aerosol particulates, it is necessary to prevent their ingression through a mask. The primary use of masks is to prevent aerial particulates. This paper reveals the development of masks with air filters coated with functionalized graphene (fG) mounted on a 3D-printed facial mask replica. The fused deposition modeling (FDM) process is used for fabricating the facial mask replica. fG associated with nanosheets has an additional adsorbing capacity with a high surface area to volume ratio. fG coat is used over a polypropylene (PP) cloth through a dip coating method to enhance the antiviral and antimicrobial properties. The quality of fG was investigated through Raman spectroscopy and other characterization techniques such as SEM, XRD, and FTIR, which were used for visual interpretation of distributions of fG on a polypropylene (PP) fabric. Fabricated fG coated MB filters show 98.2% of bacterial filtration efficiency with 1.10 mbar of breathing resistance. The efficacy of the fG coated filter was tested against SARS-CoV-2 viral particles, which showed a complete arrest of viral transmission at the fG coated layer.

316 L Stainless steel is widely used industrial material having application in broad range of domain including automotive, structural as well as biomedical. It is also used for several high temperature applications in various industries, permanent deformation due to thermal cycling and continuous high temperature exposure is one of the major concern in industries. Therefore, enticing thermo physical properties is very crucial for better efficiency and service life of components. In the present work, graphene reinforced 316 L metal matrix composite was prepared via powder bed fusion additive manufacturing technique in order to make it more stable material at elevated temperature. Powder bed fusion technique was used to melt graphene coated 316 L metal powder layer by layer to prevent agglomeration of graphene inside the matrix. To identify the chemical state of the elements in the prepared composite, synchrotron based X-ray photoelectron spectroscopy was performed. However, no carbide formation was observed inside the matrix and the prepared composite was purely austenitic. The obtained composite with 0.2 wt % graphene has coefficient of thermal expansion (CTE) equal to 19.3 × 10−6 K-1 which is about 6.2% lower than bare 316 L at 1100 °C. The value further decrease after annealing process and this much decrement in CTE can increase the application window of the material to the large extent.

Wireless transmission is affected by fading and interference effects which can be combated with equalizer.The useof MIMO system promises good improvement in terms of spectral efficency,link relaibility andSignal to Noise Ratio (SNR).The effect of fading and interference always causes an issue for signal recovery in wireless communication. Equalizationcompensates for Intersymbol Interference (ISI) created by multipath within time dispersive channels. This paper analyses theperformance of Zeroforcing and MMSE equalizer for MIMO wireless chaneels. The simulation results are obtained usingMatLab tool box version 7.0 at RF signal processing lab.The Bit Error Rate (BER) characteristics for the various transmittingand receiveing antennna is simulated in matlab tool box and many advantages and disdvantagesof the system is descrbed.The simulation results show that the equalizer based zero forcing receiver is good for noise free channel and is successfulin remving ISI,but MMSE is a better choice than ZF in terms of BER charateristics and under Noise performance.

Ingestion of a broken part of fixed orthodontic appliance is a potential complication during orthodontic treatment. We report a case of accidental ingestion of molar band and its subsequent diagnosis followed by endoscopic retrieval method. Although prevention of such incidence is the best method at the same time management of such an event is also crucial. The objective of this paper is to draw attention to the potentially serious complications that can occur if preventive techniques are not practiced and also the management of such event.

Aim: This is a study is to estimate hearing outcome after type 1 tympanoplasty using temporalis fascia as graft by underlay technique and to know about factors influencing outcome like age, gender, affected ear and size of the perforation. It is done by comparing our preoperative and post-operative audiological results with that of previous studies. Method: A total of 33 patients (34 ears) with CSOM who underwent type I tympanoplasty in the department of E.N.T, K.R. Hospital, Mysore were studied during the period of 18 months (January 2021 to June 2022). A detailed proforma was filled for each patient regard to personal details, clinical history, examination, investigations, surgical procedures and post-operative follow up visits. Audiological evaluation using pure tone audiometry was done pre operatively and at 6 and 12 weeks post operatively. Results are tabulated. Statistical analysis is done. Results: In our study of 34 cases, graft take up is 91.17%, mean hearing gain is 12.6dB and mean air bone gap closure is 13.7dB. Incidence of cases is more in the age group of 21-30 years (32.4%). Graft take up and hearing gain in younger age group (93.75% &12.9dB), male patients (100% &13.5dB) are better but this finding is not statistically significant. Patients with normal contralateral ear (100% &14.35dB), perforation size <50% size (90% & 11.5dB) have better graft take up rate and hearing outcome, which are statistically significant. Conclusion: The primary objective of surgery for CSOM is to eradicate infection and disease and make the ear safe and dry and second objective is to restore hearing. For central perforations with good cochlear reserve Type 1 tympanoplasty is good choice. Status of the opposite ear and size of the perforation have a significant role in the outcome of type I tympanoplasty. [ABSTRACT FROM AUTHOR]

Background: Lateral neck swellings in ENT have various causes, commonly found in the anterior triangle of the neck. Accurate diagnosis through imaging, FNAC, and biopsy is crucial for appropriate treatment, ranging from conservative management to surgery. Understanding incidence, etiology, pathology, and clinical behaviour is important for effective management and follow-up. Materials and Methods: Institutional Ethical committee approval was obtained and informed consent was taken from the study subjects. Patients with lateral neck swellings underwent clinical examination and FNAC, followed by further investigations based on FNAC reports. Lymph node biopsies were taken for histopathological examination. Management was based on the final diagnosis, and patients were followed up for six months. Results were analyzed and tabulated. Results: In our study of 96 patients, lateral neck masses were most common in individuals aged 46-59, with an equal male-to-female ratio. The majority of cases (82.29%) were from low socioeconomic status. Metastasis in cervical lymph nodes was the most frequent cause of lateral neck swellings, primarily in males aged over 45, and tubercular lymphadenitis was the second most common cause in females aged 18-30. The clinical diagnosis had high sensitivity (87.18%) and specificity (92.98%) for detecting malignant lesions, and these values increased when the histopathological examination was used as the gold standard. Conclusion: To evaluate and manage lateral neck swellings, a multidisciplinary approach is necessary, including medical history, clinical examination, imaging, and pathological investigations like FNAC and HPE. Prompt and accurate diagnosis is critical to prevent morbidity and mortality, and management depends on the underlying cause. Effective management requires close communication between the clinician and the pathologist. [ABSTRACT FROM AUTHOR]

Gilbert's syndrome (GS) is an autosomal inherited disorder characterized by relative deficiency of glucuronyl transferase and poor uptake of unconjugated bilirubin by hepatocytes. Cardiac surgery on cardiopulmonary bypass (CPB) in these patients triggers further hepatic dysfunction. Transesophageal echocardiography (TEE) and Doppler assessment of hepatic vein help in assessing hepatic blood flow (HBF) during cardiac surgery. Here, we discuss anesthetic management and role of TEE in maintaining HBF perioperatively in a 25-year-old male patient with GS undergoing double valve replacement with tricuspid valve plasty. TEE-guided HBF monitoring and management of hepatic perfusion by modifying anesthetic and CPB protocol resulted in the favorable outcome.

Introduction: Central venous pressure (CVP) measurement is essential in the management of certain clinical situations, including cardiac failure, volume overload and sepsis. CVP measurement requires catheterization of the central vein which is invasive and may lead to complications. The aim of this study was to evaluate the accuracy of measurement of CVP using a new noninvasive method based on near infrared spectroscopy (NIRS) in a group of cardiac surgical Intensive Care Unit (ICU) patients. Methodology: Thirty patients in cardiac surgical ICU were enrolled in the study who had an in situ central venous catheter (CVC). Sixty measurements were recorded in 1 h for each patient. A total of 1800 values were compared between noninvasive CVP (CVPn) obtained from Mespere VENUS 2000 CVP system and invasive CVP (CVPi) obtained from CVC. Results: Strong positive correlation was found between CVPi and CVPn (R = 0.9272, P < 0.0001). Linear regression equation - CVPi = 0.5404 + 0.8875 × CVPn (r2 = 0.86, P < 0.001), Bland-Altman bias plots showed mean difference ± standard deviation and limits of agreement: −0.31 ± 1.36 and − 2.99 to + 2.37 (CVPi-CVPn). Conclusion: Noninvasive assessment of the CVP based on NIRS yields readings consistently close to those measured invasively. CVPn may be a clinically useful substitute for CVPi measurements with an advantage of being simple and continuous. It is a promising tool for early management of acute state wherein knowledge of CVP is helpful.