Publications by authors named "Sarvesh Kumar"

We report absolute high-resolution vacuum ultraviolet (VUV) photoabsorption cross-sections of carbon tetrachloride (CCl) in the photon energy range 5.0-10.8 eV (248-115 nm).

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  • This study investigates the effects of selenium (Se) and silica (Si) on rice plants under arsenic (As) stress, focusing on As accumulation in grains and potential cancer risks.
  • A total of 58 metabolites were identified; arsenic exposure significantly reduced certain sugars while some antioxidant-related sugars increased, but the addition of Se and Si improved sugar levels compared to As exposure alone.
  • The outcomes suggest that using Se with Si not only enhances the nutritional profile of rice but also drastically reduces arsenic accumulation, potentially lowering cancer risk for consumers.
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Background: Transversus thoracis muscle plane block (TTPB) and parasternal intercostal nerve block (PICNB) inhibit the anterior branches of intercostal nerves and potentially provide adequate analgesia after cardiac surgery. This study aimed to compare these two blocks for a reduction in postoperative opioid consumption after cardiac surgery.

Methods: This randomized, single-blind trial included 60 adult cardiac surgical patients divided into three groups to receive ultrasound-guided TTPB (group T), PICNB (group P), or no block (group C) before surgery.

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Introduction: Serum lactate is a consequence of tissue hypoperfusion and has been used routinely for patient management following cardiac surgery. This study aims to determine the association of lactate with early mortality and postoperative morbidity.

Methods: This is a prospective cohort study carried out in the Department of Cardiovascular and Thoracic Surgery, King George's Medical University (India), from January 2020 to December 2022.

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In the present work, we report an update and extension of the previous ion-pair formation study of Hubers, M.M.; Los, J.

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  • * Time-of-flight mass spectra were recorded across a range of collision energies (17.5 to 350 eV), revealing that the branching ratios of different products depend significantly on the collision energy, especially at low to intermediate energies.
  • * The study highlights the role of the electron donor in reactions involving temporary negative ions, as evidenced by electronic state spectroscopy showing a significant Feshbach resonance, and is supported by quantum chemical calculations of molecular orbitals with potassium.
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Purpose: The Hospital Corneal Retrieval Program (HCRP) aims to counsel and encourage the family of a critically ill or deceased person in the hospital for eye donation. Adequately sensitized health-care workers (HCWs) may play a pivotal role in boosting HCRP.

Study Design: Multicentric, cross-sectional, descriptive study.

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  • TIMP2, a tissue inhibitor, shows potential in reducing tumor growth and metastasis in lung cancer models, but its mechanisms need further exploration.* -
  • Mice with a TIMP2 mutation display worse outcomes, such as increased tumor growth and immune cell infiltration, while recombinant TIMP2 treatment lowers tumors in both mutant and normal mice.* -
  • Treatment with TIMP2 changes gene expression differently in mutant versus wild-type mice, indicating its role in altering the tumor environment and suggesting its use as an additional treatment for non-small cell lung cancer (NSCLC).*
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Cardiovascular diseases (CVDs) remain major causes of global mortality in the world. Genetic approaches have succeeded in the discovery of the molecular basis of an increasing number of cardiac diseases. Genome-editing strategies are one of the most effective methods for assisting therapeutic approaches.

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Cardiac cysticercosis is a rarely encountered form of cysticercosis, caused by the larval cyst of tapeworm (). It commonly affects the central nervous system; however, systematic involvement has been reported as well. We describe a case of isolated cardiac cysticercosis incidentally discovered in a 16-year-old female undergoing surgical closure of a ventricular septal defect (VSD), with no prior history of parasitic infestation.

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Green energy is being claimed as a sustainable solution to the socioeconomic concerns associated with environmental issues and the depletion of non-renewable sources of energy. The impacts of climate change, including global warming, ozone layer depletion, and rising sea levels, have underscored the emergent need for increased investment in green energy to curb down carbon dioxide emissions. Evolution of environmentalism in the 21st century, and the power of environmentally conscious population with their consumption driven demand is increasing which address a wide variety of economic, social, political, technological and legal topics, ranging from empirical analysis to philosophical theorization.

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Spatial and temporal variations have been found in the levels of arsenic (As) throughout the groundwater of the Ghaghara basin. Fifteen out of twenty-five districts in this basin are reported to be affected by As, where the levels of As in groundwater and soil exceed the permissible limits set by the WHO (10 μgl) and FAO (20 mgkg) respectively. These districts include a total of four municipalities in Nepal and eighty-six blocks in India, all of which have varying degrees of As contamination.

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  • * Total electron scattering cross-sections were established using previous measurements and calculated using different methods depending on the energy range, including the Schwinger multichannel method for low energies and IAM-SCARI for higher energies.
  • * Additional measurements included ionization cross-sections and fragmentation data using advanced spectrometers, allowing for a detailed understanding of electron-induced radiation damage, although further biological testing is needed to confirm its radiosens
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The objective of this investigation is to provide framework to construct a threefold mixture model and its shifted version using Weibull, lognormal, and gamma distributions. The proposed models are examined by establishing the statistical and reliability indices. The parameter estimation using the maximum likelihood estimation method (MLE) and expectation-maximization has been proposed.

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HO/DO negative ion time-of-flight mass spectra from electron transfer processes at different collision energies with neutral potassium yield OH/OD, O, and H/D. The branching ratios show a relevant energy dependence with an important isotope effect in DO. Electronic state spectroscopy of water has been further investigated by recording potassium cation energy loss spectra in the forward scattering direction at an impact energy of 205 eV (lab frame), with quantum chemical calculations for the lowest-lying unoccupied molecular orbitals in the presence of a potassium atom supporting most of the experimental findings.

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Primary cardiac synovial sarcoma is a rare entity, arising from the pericardium or the chambers of the heart. It presents in the 4 decade of life with a striking male predisposition. We describe an unusual case of a 22-year-old female who presented with complaints of dyspnoea on exertion, palpitations, and chest pain.

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The geometrical effect of chlorine atom positions in polyatomic molecules after capturing a low-energy electron is shown to be a prevalent mechanism yielding Cl. In this work, we investigated hexachlorobenzene reduction in electron transfer experiments to determine the role of chlorine atom positions around the aromatic ring, and compared our results with those using -, - and -dichlorobenzene molecules. This was achieved by combining gas-phase experiments to determine the reaction threshold by means of mass spectrometry together with quantum chemical calculations.

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This novel work reports nimorazole (NIMO) radiosensitizer reduction upon electron transfer in collisions with neutral potassium (K) atoms in the lab frame energy range of 10-400 eV. The negative ions formed in this energy range were time-of-flight mass analyzed and branching ratios were obtained. Assignment of different anions showed that more than 80% was due to the formation of the non-dissociated parent anion NIMO at 226 u and nitrogen dioxide anion NO at 46 u.

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The integration of virtual reality (VR), augmented reality (AR), and mixed reality (MR) in urological practices and medical education has led to modern training systems that are cost-effective and with an increased expectation toward surgical performance and outcomes. VR aids the user in interacting with the virtual environment realistically by providing a three-dimensional (3D) view of the structures inside the body with high-level precision. AR enhances the real environment around users by integrating experience with virtual information over physical models and objects, which in turn has improved understanding of physiological mechanisms and anatomical structures.

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It is a new online service paradigm that allows consumers to exchange their health data. Health information management software allows individuals to control and share their health data with other users and healthcare experts. Patient health records (PHR) may be intelligently examined to predict patient criticality in healthcare systems.

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In this study, novel experimental total electron detachment cross sections for O collisions with benzene molecules are reported for the impact energy range (10-1000 eV), as measured with a transmission beam apparatus. By analysing the positively charged species produced during the collision events, relative total ionisation cross sections were derived in the incident energy range of 160-900 eV. Relative partial ionisation cross sections for fragments with / ≤ 78 u were also given in this energy range.

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In this contribution, we report a novel comprehensive investigation on negative ion formation from electron transfer processes mediated by neutral potassium atom collisions with neutral methanol molecules employing experimental and theoretical methodologies. Methanol collision-induced fragmentation yielding anion formation has been obtained by time-of-flight mass spectrometry in the wide energy range of 19 to 275 eV in the lab frame. The negative ions formed in such a collision process have been assigned to CHO, OH, and O, with a strong energy dependence especially at lower collision energies.

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