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We observed infection rates associated with the LifeSite Hemodialysis Access System, a novel dialysis device consisting of 2 subcutaneously implanted valves accessed by repeated use of fibrous tissue tracts, of 4.8 total infections and 8.1 first episodes per 1000 patient-days. These rates are higher than those observed elsewhere, which may be related to use of the device in a population of chronically ill patients, to the learning curve associated with use of the device, or to inherent qualities of the device.

The recent achievements in the performance of superconducting RF (SRF) photoinjectors have opened a new era in the development of the reliable high-brightness CW electron sources. While the SRF guns become one of the most promising technologies, the compatibility of SRF environment with the complex photocathodes remains on the forefront of the modern accelerator science. The SRF cavities operate at cryogenic temperatures providing the ultra-high vacuum (UHV) environment highly beneficial for the photocathode performance. However, the necessity to keep the photocathodes at room temperature while being surrounded by the cavity walls that are kept at cryogenic temperatures creates an additional complexity for the SRF gun design and operation. The complex and volatile chemical compounds used for photocathodes have a high chance of contaminating the surfaces of an SRF cavity. When deposited, such compounds could create centers for cold electron emission which degrade performance of the SRF guns. Such a circumstance would require development of the in-situ processing techniques for restoring the SRF cavity performance. This paper presents the results of the successful implementation and application of the He conditioning method for cavity restoration using the existing SRF photoinjector at Brookhaven National Laboratory (BNL). The method has proven to be extremely effective and resulted in a dramatic improvement of the BNL gun performance.

High-gradient CW photo-injectors operating at high accelerating gradients promise to revolutionize many sciences and applications. They can establish the basis for super-bright monochromatic X-ray free-electron lasers, super-bright hadron beams, nuclear- waste transmutation or a new generation of microchip production. In this letter we report on our operation of a superconducting RF electron gun with a record-high accelerating gradient at the CsK2Sb photocathode (i.e. ~ 20 MV/m) generating a record-high bunch charge (i.e., 3 nC). We briefly describe the system and then detail our experimental results. This achievement opens new era in generating high-power electron beams with a very high brightness.

Over the years many grading systems have been put forward in an attempt to obtain objectivity in grading oral epithelial dysplasia (OED). However, despite these efforts variability remains unresolved. Our study aimed to evaluate the intra- and inter-observer variability in grading OED, using World Health Organization (WHO), Smith and Pindborg and Ljubljana grading systems and discuss the possible reasons for this variability if any. Three oral pathologists graded 50 slides of OED independently twice at a time interval of 3 months. Variability was evaluated by multivariate kappa analysis. Intra-observer reproducibility ranged from moderate to good in WHO system, fair to moderate in Smith and Pindborg system and moderate to poor in Ljubljana grading system. Inter-observer agreement was found to be fair in WHO, poor in Smith and Pindborg system and poor to fair in Ljubljana grading systems. Intra-observer reproducibility of the dysplastic features in WHO system was good for all except the loss of polarity and basilar hyperplasia for first observer and enlarged nucleoli for the third observer. Inter-observer agreement was good for increased number of mitosis and nuclear hyperchromatism. Intra-observer reproducibility and inter-observer agreement were found to be best in the WHO grading system though variability within this system still existed. There is a need for an International body of pathologists to come to a consensus on a more definable grading system to resolve the issue of variability in grading dysplasia.

Continental glacier melts directly influence the environment, resulting in sea-level rise affecting the settlements along the coast. The increase in global warming and constant change in the glacier mass grabbed the attention of researchers in understanding the evolution and distribution of glaciers. Despite the increase in the number of glacier studies, the difficulty is experienced by the researchers in understanding the supra-glacial debris cover and its characteristics. Supraglacial debris cover affects surface melt by increasing and decreasing ablation under thin and thick debris cover. In the present study, estimation of supraglacial debris cover (SDC) over Austre Brøggerbreen and Vestre Brøggerbreen glaciers of Ny-Ålesund is carried out with the aid of Landsat 5/7/8 datasets between 2000 and 2020. Supraglacial debris-cover is mapped using NDSI and band ratio techniques based on thresholding and it is estimated that Austre Brøggerbreen and Vestre Brøggerbreen glaciers are covered by 7.29% and 15.19% of SDC respectively. Results obtained are validated by a field visit to Arctic glacier, which is the first of its kind enhancing India’s scientific credentials in Polar research.

Abstract Background The relationships between first-line drug concentrations and clinically important outcomes among patients with tuberculosis (TB) remain poorly understood. Methods We enrolled a prospective cohort of patients with new pulmonary TB receiving thrice-weekly treatment in India. The maximum plasma concentration of each drug was determined at months 1 and 5 using blood samples drawn 2 hours postdose. Subtherapeutic cutoffs were: rifampicin <8 µg/mL, isoniazid <3 µg/mL, and pyrazinamide <20 µg/mL. Factors associated with lower log-transformed drug concentrations, unfavorable outcomes (composite of treatment failure, all-cause mortality, and recurrence), and individual outcomes were examined using Poisson regression models. Results Among 404 participants, rifampicin, isoniazid, and pyrazinamide concentrations were subtherapeutic in 85%, 29%, and 13%, respectively, at month 1 (with similar results for rifampicin and isoniazid at month 5). Rifampicin concentrations were lower with human immunodeficiency virus coinfection (median, 1.6 vs 4.6 µg/mL; P = .015). Unfavorable outcome was observed in 19%; a 1-μg/mL decrease in rifampicin concentration was independently associated with unfavorable outcome (adjusted incidence rate ratio [aIRR], 1.21 [95% confidence interval {CI}, 1.01–1.47]) and treatment failure (aIRR, 1.16 [95% CI, 1.05–1.28]). A 1-μg/mL decrease in pyrazinamide concentration was associated with recurrence (aIRR, 1.05 [95% CI, 1.01–1.11]). Conclusions Rifampicin concentrations were subtherapeutic in most Indian patients taking a thrice-weekly TB regimen, and low rifampicin and pyrazinamide concentrations were associated with poor outcomes. Higher or more frequent dosing is needed to improve TB treatment outcomes in India. In a prospective cohort of patients with newly diagnosed pulmonary tuberculosis receiving standard thrice-weekly antituberculosis treatment in India, lower rifampicin concentration was associated with Human Immunodeficiency Virus coinfection and independently associated with unfavorable treatment outcomes.

ObjectivesTo evaluate pharmacokinetics of first-line antitubercular drugs, isoniazid (INH) and pyrazinamide (PZA), with revised WHO dosages and to assess its adequacy in relation to age and nutritional status.DesignObservational study.SettingThis study was conducted at Sarojini Naidu Medical College, Agra, and National Institute for Research in Tuberculosis, Chennai.Patients40 subjects diagnosed with tuberculosis were registered in the study and started on daily first-line antitubercular regimen based on the revised WHO guidelines.InterventionsBlood samples were collected at 0, 2, 4, 6 and 8 hours from these subjects after 15 days of treatment for drug estimations.Main outcome measureThe measurement of drug concentrations (maximum peak concentration (Cmax) and area under the time –concentration curve (AUC0–8 hours)) for INH and PZA. Appropriate statistical methods were used to evaluate the impact of age and nutritional status on pharmacokinetic variables.ResultsFor INH, the difference in drug exposures in children <3 years (Cmax 3.18 µg/mL and AUC0–8 hours15.76 µg/mL hour) and children >3 years (Cmax3.05 µg/mL and AUC0–8 hours 14.37 µg/mL hour) was not significant (P=0.94, P=0.81, respectively). The drug levels in children with low body mass index (BMI) (Cmax3.08 µg/mL; AUC0–8 hours14.81 µg/mL hour) were also comparable with their normal counterparts (Cmax3.09 µg/mL, P=0.99; AUC0–8 hours 14.69 µg/mL hour, P=0.82). PZA drug exposures obtained in children less than 3 years (Cmax29.22 µg/mL, AUC0–8 hours 155.45 µg/mL hour) were significantly lower compared with drug levels in children above 3 years (Cmax 37.12 µg/mL, P=0.03; AUC 202.63 µg/mL hour, P value=0.01). Children with low BMI had significantly lower drug concentrations (Cmax 31.90 µg/mL, AUC0–8 hours167.64 µg/mL hour) when compared with normal counterparts (Cmax 37.60 µg/mL, P=0.02; AUC0–8 hours 208.77 µg/mL hour, P=0.01).ConclusionsThe revised WHO drug dosages were found to be adequate for INH with respect to age and nutritional status, whereas PZA showed significantly lower drug levels in children <3 years and in malnourished children.

Background Neurological disorders pose a substantial burden on India’s healthcare system, contributing significantly to disability and mortality. In rural areas, where access to specialists availability is limited, Community Health Officers (CHOs) play a crucial role in bridging the gap in care. However, the lack of structured training programs for CHO’s in neurological disorder management highlights an urgent need for targeted capacity-building interventions. This study evaluates the impact of a structured training program on the knowledge and skills of CHOs in managing common neurological disorders under the Karnataka Brain Health Initiative (KaBHI). Methods The quasi-experimental study was conducted across three districts in Karnataka-Chikkaballapura, Kolar, and Bengaluru South. A total of 295 CHOs participated in a two-hour training program delivered by expert neurologists, covering headache, epilepsy, stroke, and dementia through lectures, discussions, and case-based scenarios. Pre- and post-training knowledge assessments using a standardized multiple-choice questionnaire evaluated the program’s impact. Feedback from participants was collected to assess training quality. Results Of the 295 participants, 280 completed both pre- and post-training assessments. Significant improvements were observed in knowledge scores across all disorders, with a mean score increase from 57.46 ± 16.4 to 75.79 ± 12.9 (mean difference: 18.3, p <0.001). The program was effective regardless of prior clinical experience, indicating its adaptability. Feedback highlighted high satisfaction with the training's structure, content, and delivery. Conclusion This study provides strong evidence that structured training programs can significantly enhance CHOs' ability to diagnose and manage neurological disorders, particularly in resource-limited settings. Beyond immediate knowledge gains, these findings highlight the broader potential for integrating similar capacity-building initiatives for neurological care into national healthcare programs, such as the Ayushman Bharat Mission and Health and Wellness Centers (HWCs). By equipping frontline healthcare providers with specialized skills, such programs can improve early diagnosis, facilitate timely intervention, and enhance patient outcomes, ultimately reducing the burden of neurological disorders at the primary care level. Future phases of KaBHI, implemented state-wide, will focus on ensuring long-term sustainability by refining and expanding this training model to address a wider range of neurological conditions and strengthening its integration into primary healthcare frameworks.