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31 result(s) for "Tiwari, Shivangi"
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Uterine biophysical profile after intrauterine instillation of autologous blood cell derivative (ABCD) for thin endometrium in frozen embryo transfer cycles
Purpose This study was conducted to investigate the changes in the uterine biophysical profile (UBP) before and after intrauterine administration of Autologous Blood Cell Derivatives (ABCD). Methods This prospective observational study investigates endometrial receptivity in frozen embryo transfer (FET) cycles. It focuses on patients with thin endometrium (TEM), a basal serum FSH below 10 IU/L, and good-quality frozen embryos. The study utilizes the UBP to evaluate endometrial receptivity both before and after the ABCD procedure. Results The study involved 33 women with TEM undergoing FET cycles. ABCD was administered during the first, second, and third or later FET cycles in 21.21%, 45.45%, and 33.33% of patients, respectively. Following ABCD administration, significant improvements were observed in UBP scores (from 9.06 to 14.85), EMT (from 6.6 mm to 8.67 mm), blood flow to zone III (from 0.85 mm to 3.36 mm), and uterine artery pulsatility index (PI) (from 0.7 to 0.97). Odds ratio analysis showed an association between pregnancy and endometrial layering (OR = 2.12), though it was not statistically significant. Multivariate analysis revealed that the UBP score predicted pregnancy with 68% accuracy, while the ROC analysis yielded an accuracy of 54%. A UBP threshold score of 20 offered 100% specificity, making it a potentially reliable predictor of successful implantation. Conclusions This study demonstrates that ABCD growth factors significantly enhance endometrial development in women with TEM, resulting in improved UBP scores, reduced EMT, lower uterine artery PI, and increased uterine blood flow. A UBP score cutoff of 20 demonstrated 95% sensitivity, highlighting its potential as a reliable prognostic tool in infertility treatment.
Radiating thigh pain from a torsed pedunculated round ligament fibroid
Round ligament fibroids are rare, benign tumours that can arise from any part of the round ligament, either extra-abdominal or intra-abdominal, and may present as vulvar, inguinal or adnexal masses. Most often found in premenopausal women, these lesions are generally without symptoms and are discovered by chance. However, they can lead to pelvic pain, particularly if they undergo torsion or increase in size. While imaging techniques such as ultrasonography, CT and MRI are valuable for initial assessment, laparoscopy remains the definitive method for both diagnosing and managing round ligament fibroids. Laparoscopy offers multiple benefits, such as enabling tissue biopsies, shortening hospital stays and promoting quicker recovery. However, owing to their stalk-like structure, pedunculated round ligament fibroids are frequently mistaken for ovarian cysts or inguinal hernias. We present the case of a middle-aged woman who successfully underwent laparoscopic surgery for a torsed right round ligament fibroid.
A Rare but Lethal Emergency: A Case Report on Boerhaave’s Syndrome
Boerhaave's syndrome is a rare and life-threatening condition characterized by spontaneous esophageal rupture, often precipitated by sudden increases in intra-esophageal pressure, typically following forceful vomiting. The nonspecific nature of its clinical presentation, which may include chest pain, vomiting, and dyspnea, often overlaps with other thoracic or gastrointestinal disorders, making diagnosis challenging. This case report describes a 71-year-old female who presented with acute chest pain following episodes of vomiting. Initial clinical examination revealed tachycardia, tachypnea, and subcutaneous emphysema, raising suspicion of Boerhaave's syndrome. Diagnosis was confirmed through contrast-enhanced computed tomography (CECT), which revealed a 3 cm perforation in the thoracic esophagus with pleural effusion. The patient was managed surgically with emergency thoracotomy, debridement, primary esophageal repair reinforced with an intercostal muscle flap, and the placement of a feeding jejunostomy. This case underscores the importance of early diagnosis, prompt surgical intervention, and multidisciplinary management in mitigating the high mortality associated with Boerhaave's syndrome.
Comparative assessment of satellite-based models through Planetscope and landsat-8 for determining physico-chemical water quality parameters in Varuna River (India)
Water quality monitoring is critical for maintaining safe water and conserving ecosystem diversity. However, data and information on riverine water quality are sparse in India’s river systems. Remote sensing analytics have huge potential to enhance the ecological state of water resources by monitoring the evolution of water contamination over time. The principal aim of the study is to use empirical modelling approaches in developing models for estimating water quality parameters (WQPs) such as total suspended solids (TSS), dissolved oxygen (DO), Calcium, Chloride, and pH using Landsat-8 and PlanetScope satellite data and laboratory analysis. Surface reflectance and band ratios are mainly utilized as input data to develop linear regression with measured water quality data. Regression-based results with PlanetScope generated significantly higher R 2 for all WQPs (0.65–0.78) except pH (0.41) as compared to Landsat-8. Results also showed that the regression models of TSS, DO, Calcium, Chloride, and pH are highly significant to visible (B, G and R) and near-infrared (NIR) bands of PlanetScope which can be attributed to finer spatial resolution. The water quality is mainly very poor around densely populated areas which crosses the permissible limit. Furthermore, the findings of this study illustrated the considerable capacity of water quality models based on remote sensing for conducting periodic monitoring and assessment. The applied empirical approach demonstrates the potential applicability of remote sensing analytics for the formulation of water management strategies, policies, and decision-making.
Magnetoelectric and magnetodielectric coupling and microwave resonator characteristics of Ba0.5Sr0.5Nb2O6/CoCr0.4Fe1.6O4 multiferroic composite
A multiferroic composite consisting of single phases of 30 vol.% magnetostrictive ferrite and 70 vol.% relaxor ferroelectric has been synthesized. The ferrite exhibits a diffuse dielectric phase transition (DPT)with the transition temperature varying from 450 K to 600 K and an activation energy of 0.29 eV. Magnetically, it has a soft behavior with 70 emug −1 saturation magnetization and a Curie transition at ~620 K. The relaxor ferroelectric phase on the other hand exhibits two clear DPTs at 390 K–400 K and 150 K–300 K. The composite of these two shows a soft ferromagnetic behavior reminiscent of the ferrite along with 3 DPTs. There is strong coupling between the two orders – magnetostrictive and piezoelectric in the composite. The capacitance decreases by 45% in the presence of magnetic field corresponding to a sensitivity of 0.9% kOe −1 , an extremely large value. The magnetoelectric coupling constant is found to be 20.6 mVcm −1 Oe −1 , a large value for a bulk composite. Microwave band stop filters of different thicknesses made from the composite have resonant frequencies which upshift in the presence of magnetic field indicating a multiferroic behavior with possibility for electric field tuning of resonant frequency.
Mid-Holocene El Niño Southern Oscillation variability reduced by northern African vegetation changes in climate models
Several paleoclimatic reconstructions have indicated that the mid-Holocene (6,000 years before present) was characterized by stronger east-west temperature contrast and lower El Niño Southern Oscillation (ENSO) variability relative to the present day. While climate models show a reduction in ENSO variability, they underestimate this reduction compared to paleoclimate reconstructions. Further, the drivers behind these changes remain unclear. Here we use five global climate models to show that incorporating vegetation changes over northern Africa during the mid-Holocene amplifies the orbitally-driven strengthening of the West African Monsoon, warms the tropical north Atlantic, and nudges it to an Atlantic Niño-like mean state. Changes over the Atlantic lead to a La Niña-like mean state over the tropical Pacific, with reductions in interannual variability amplified by up to 18% in the Niño3.4 region due to the Green Sahara alone. Our work highlights the importance of the Atlantic influence on ENSO and provides paleoclimatic evidence for this synergistic teleconnection. Incorporating mid-Holocene vegetation changes over northern Africa amplifies Atlantic-driven teleconnections that shift the tropical Pacific toward a La Niña-like mean state and reduce El Niño-Southern Oscillation variability by up to 18%, according to simulations using global climate models.
Accuracy and Consistency of Grass Pollen Identification by Human Analysts Using Electron Micrographs of Surface Ornamentation
Premise of the study: Humans frequently identify pollen grains at a taxonomic rank above species. Grass pollen is a classic case of this situation, which has led to the development of computational methods for identifying grass pollen species. This paper aims to provide context for these computational methods by quantifying the accuracy and consistency of human identification. Methods: We measured the ability of nine human analysts to identify 12 species of grass pollen using scanning electron microscopy images. These are the same images that were used in computational identifications. We have measured the coverage, accuracy, and consistency of each analyst, and investigated their ability to recognize duplicate images. Results: Coverage ranged from 87.5% to 100%. Mean identification accuracy ranged from 46.67% to 87.5%. The identification consistency of each analyst ranged from 32.5% to 87.5%, and each of the nine analysts produced considerably different identification schemes. The proportion of duplicate image pairs that were missed ranged from 6.25% to 58.33%. Discussion: The identification errors made by each analyst, which result in a decline in accuracy and consistency, are likely related to psychological factors such as the limited capacity of human memory, fatigue and boredom, recency effects, and positivity bias.
Efficacy of intrauterine autologous blood cell derivatives in enhancing endometrial thickness and IVF outcomes for women with recurrent implantation failure: a retrospective cohort study
PurposeThe purpose of this study was to determine the effects of intrauterine infusion of autologous blood cell derivative (ABCD) on endometrial thickness and pregnancy outcomes in a group of patients who underwent IVF with recurrent implantation failure (RIF) and who had either a normal endometrium or thin endometrium.MethodsThis retrospective study included 63 patients who experienced RIF at the Department of Reproductive Medicine and Surgery, KMC, Manipal, between January 2021 and March 2024 and who received three doses of intrauterine ABCD infusion to prepare the endometrium for frozen embryo transfer (FET).ResultsWe enrolled 63 RIF patients, 30 with a normal endometrium (NEM) and 33 with a thin endometrium (TEM). The endometrial thickness (EMT) significantly increased across all the groups. After 3 cycles of intrauterine ABCD infusion, the mean increases in EMT in the NEM and TEM groups were 0.77 mm and 1.36 mm, respectively, which were statistically significant. Among the 62 completed FET cycles, 40.3% were positive for beta-hCG. The clinical pregnancy rate was 33.8% (40% in the NEM group, 28.1% in the TEM group), and the live birth rate was 24.2% (30% in the NEM group, 18.8% in the TEM group). A total of 9.7% of pregnancies had spontaneous miscarriages. Moreover, the EMT did not differ between the pregnant and nonpregnant groups.ConclusionIntrauterine ABCD infusion improves the pregnancy outcomes of patients with RIF, regardless of the EMT. The results of this study revealed that endometrial receptivity improved significantly along with the EMT.
Unraveling an Unusual Presentation of Parotid Malignancy: A Case Report
Mucoepidermoid carcinoma (MEC) is a salivary gland tumor commonly arising from the parotid gland. MEC has various presenting symptoms, including a painless, slow-growing mass below or anterior to the ear lobule. However, an unusual presentation can also be in the form of post-auricular swelling. Other more common benign differentials for post-auricular swelling include lymphadenopathy, epidermoid cysts, and lipomas. Thus, diagnosing a postauricular swelling as MEC solely based on clinical presentation is challenging, and a high suspicion, as well as a multidisciplinary approach with various radiological investigations such as computed tomography (CT) and magnetic resonance imaging (MRI), are required in collaboration with histopathological assessment for an accurate diagnosis of this malignancy. Prognosis depends on various factors, including the grade of the tumor, the patient's age, and comorbidities, as well as the stage at the time of diagnosis. Early diagnosis and surgical intervention are the mainstays of treatment, which can be followed by adjuvant radiotherapy based on the stage of the malignancy. This is a report of a patient who presented with post-auricular swelling, which was initially misdiagnosed as a benign necrotic lymph node. After further evaluation, it was found to be a mucoepidermoid carcinoma of the parotid gland, which was managed by surgical excision and radiotherapy.
Magnetoelectric and magnetodielectric coupling and microwave resonator characteristics of Ba 0.5 Sr 0.5 Nb 2 O 6 /CoCr 0.4 Fe 1.6 O 4 multiferroic composite
A multiferroic composite consisting of single phases of 30 vol.% magnetostrictive ferrite and 70 vol.% relaxor ferroelectric has been synthesized. The ferrite exhibits a diffuse dielectric phase transition (DPT)with the transition temperature varying from 450 K to 600 K and an activation energy of 0.29 eV. Magnetically, it has a soft behavior with 70 emug saturation magnetization and a Curie transition at ~620 K. The relaxor ferroelectric phase on the other hand exhibits two clear DPTs at 390 K-400 K and 150 K-300 K. The composite of these two shows a soft ferromagnetic behavior reminiscent of the ferrite along with 3 DPTs. There is strong coupling between the two orders - magnetostrictive and piezoelectric in the composite. The capacitance decreases by 45% in the presence of magnetic field corresponding to a sensitivity of 0.9% kOe , an extremely large value. The magnetoelectric coupling constant is found to be 20.6 mVcm Oe , a large value for a bulk composite. Microwave band stop filters of different thicknesses made from the composite have resonant frequencies which upshift in the presence of magnetic field indicating a multiferroic behavior with possibility for electric field tuning of resonant frequency.