High-Performance Intermetallic PtCo/C Electrocatalyst for the Oxygen Reduction Reaction Synthesized by Pre-Lithiation Method.

Fuel cells are recognized as promising alternatives to existing conventional energy systems for a sustainable future. However, the synthesis of efficient and robust platinum (Pt) based catalysts remains a challenge for practical fuel cell applications. Herein, the PtCo/C nanoparticles with about 4.

Mathematical modeling of infectious diseases and the impact of vaccination strategies.

Mathematical modeling plays a crucial role in understanding and combating infectious diseases, offering predictive insights into disease spread and the impact of vaccination strategies. This paper explored the significance of mathematical modeling in epidemic control efforts, focusing on the interplay between vaccination strategies, disease transmission rates, and population immunity. To facilitate meaningful comparisons of vaccination strategies, we maintained a consistent framework by fixing the vaccination capacity to vary from 10 to 100% of the total population.

A new methacrylate-chitosan based blend and its ZnO containing nanocomposites: Investigation of thermal and biological properties.

Biobased materials are an important step towards a sustainable future. The need for these materials, which stand out in terms of their environmental and economic benefits, is increasing daily. This study includes the production of new bio based nanocomposites containing a blend of biopolymer chitosan (CS) and synthetic polymethacrylate derivative poly(2-oxo-2-(3,4,5-trifluoroanilino)ethyl-2-methylprop-2-enoate)(POTFAMA) and biosynthesized zinc oxide nanoparticles (ZnO NPs) by hydrothermal method.

How do cocaine and morphine in methanol solution desorb at the last moment of Leidenfrost phenomenon-assisted thermal desorption?

Rationale: The objective of the present study is to investigate desorption of low-volatility analytes in Leidenfrost phenomenon-assisted thermal desorption (LPTD).

Methods: LPTD was investigated for 5 μL solutions of 0.03 ppm cocaine or morphine in methanol (sample weight: 0.

Exosomal microRNAs in cancer metastasis: A bridge between tumor micro and macroenvironment.

Malignant tumors are complicated structures of cancer cells that are constantly in communication with their local and distant environment. Exosomes are released by tumor cells and can facilitate the cell-cell interaction within the local microenvironment and the primary tumor. In fact, exosomes are secreted by both tumor and non-tumor cells, to provide a mutual communication network between cells and their micro- and/or macro-environments.

Management of Pathologic Hip Fracture Secondary to Musculoskeletal Echinococcosis: A Case Report.

A 50-year-old female from Uzbekistan presented to our emergency department with severe right hip pain and loss of ambulation. Her history included multiple hepatic echinococcal cyst resections. After a fall, she underwent a proximal femur open reduction and internal fixation (ORIF) and revision in Uzbekistan, which revealed broken screws and cystic lesions.

Role of ethnicity and residency in active tuberculosis in Karakalpakstan: study protocol of a matched case-control study.

Introduction: Uzbekistan is one of the 30 countries with the highest tuberculosis (TB) morbidity, accounting for 87% of all cases globally. The incidence of TB in the Republic of Karakalpakstan (RK) remains consistently high in comparison with other regions of Uzbekistan. The incidence rates of TB strongly differ even among the regions within RK.

Clinical characteristics and outcomes of orbital fractures: a sex-based cohort analysis.

Purpose: This study aims to identify clinical similarities and differences between males and females presenting with orbital fracture.

Methods: Patient charts of adult orbital fracture cases diagnosed via computed tomography and referred by a level 1 trauma center to the McGill University Health Centre between August 2015 to January 2018 were examined and analyzed. Clinical parameters included age, sex, mechanism of injury, morphology of orbital fracture, symptoms and examination features, and rates of ocular pathology.

A comparative study of extraction free detection of HBV DNA using sodium dodecyl sulfate, N-lauroylsarcosine sodium salt, and sodium dodecyl benzene sulfonate.

This study aimed to develop an extraction-free method for quantitative and qualitative detection of HBV DNA compared to traditional nucleic acid extraction. Paired serum and dried blood spot (DBS) samples from 67 HBsAg-positive and 67 HBsAg-negative individuals were included. Two samples with known HBV DNA titers (~ 10 copies/mL) were examined by extraction-free detection using three surfactants (0.

Improved interfacial compatibility between unsaturated polyester resin and rice straw fibers after non-washing treatment with Ca(OH).

The agricultural industry produces a substantial volume of rice straw (RS) annually, highlighting the importance of recycling RS for sustainable materials. However, the poor interfacial compatibility between RS and polymers often leads to drawbacks in their composites, such as water-swelling and limited tensile strength. Here, we propose a novel approach using Ca(OH) that offers several distinct advantages: enhancement of interfacial compatibility, elimination of the need for water washing, and formation of calcified hybrid particles on fiber surfaces by capturing CO from the atmosphere.

Cell Type-Specific Anti- and Pro-Oxidative Effects of L. Ellagitannins.

Pomegranate and its by-products contain a broad spectrum of phytochemicals, such as flavonoids, phenolic acids and tannins, having pleiotropic preventive and prophylactic properties in health disorders related to oxidative stress and microbial contamination. Here, we examined the biological effects of a pomegranate peel ellagitannins-enriched (>90%) extract, PETE. In vitro studies revealed that PETE has a strong antiradical action towards synthetic radicals and biologically relevant ROS surpassing or comparable to that of Trolox.

Large-scale medieval urbanism traced by UAV-lidar in highland Central Asia.

Aerial light detection and ranging (lidar) has emerged as a powerful technology for mapping urban archaeological landscapes, especially where dense vegetation obscures site visibility. More recently, uncrewed aerial vehicle/drone lidar scanning has markedly improved the resolution of three-dimensional point clouds, allowing for the detection of slight traces of structural features at centimetres of detail across large archaeological sites, a method particularly useful in areas such as mountains, where rapid deposition and erosion irregularly bury and expose archaeological remains. Here we present the results of uncrewed aerial vehicle-lidar surveys in Central Asia, conducted at two recently discovered archaeological sites in southeastern Uzbekistan: Tashbulak and Tugunbulak.

[Analysis of defects in health care delivery for children based on the data of commission forensic medical examinations performed in the Republic of Uzbekistan].

Objective: To perform a retrospective analysis of the commission forensic medical examinations' data of pediatric profile with identification of defects in health care delivery and establishment of their connection with unfavorable outcome.

Material And Methods: The data of 3854 commission forensic medical examinations performed in the period from 2012 to 2021 regarding the evaluation of quality of health care delivery for children with the establishment of nature and type of defects in health care delivery, determination of disease (injury) outcome, identification of cause-effect relationship between the defect in health care delivery and negative disease (injury) outcome.

Results And Conclusions: Defects in health care delivery were equal 9% in the studied commission forensic medical examinations.

Modeling tuberculosis transmission dynamics in Kazakhstan using SARIMA and SIR models.

Tuberculosis (TB) is a highly contagious disease that remains a global concern affecting numerous countries. Kazakhstan has been facing considerable challenges in TB prevention and treatment for decades. This study aims to understand TB transmission dynamics by developing and comparing statistical and deterministic models: Seasonal Autoregressive Integrated Moving Average (SARIMA) and the basic Susceptible-Infected-Recovered (SIR).

[Neuroprotective effect of cytoflavin in the treatment of premature newborns with hypoxic-ischemic encephalopathy].

Objective: Evaluation of the effectiveness of Cytoflavin as a neuroprotective therapy for neurological complications in premature newborns with hypoxic-ischemic encephalopathy.

Material And Methods: 56 premature newborns with low body weight were examined. Newborn children, depending on the therapy, were divided into 2 groups: Group I - 32 premature newborns with hypoxic-ischemic encephalopathy; received basic therapy and Cytoflavin; Group II - 24 premature newborns with hypoxic-ischemic encephalopathy; received only basic therapy.

Optimizing Human Papillomavirus (HPV) Screening: Urine Sample Analysis and Associated Factors in Uzbekistan.

Objective This study assessed the accuracy of detecting Human Papillomavirus (HPV) DNA in urine samples compared to cervical samples and identified factors associated with HPV DNA positivity in Uzbekistan. Methods A total of 218 paired urine and cervical samples were collected from women in Uzbekistan. HPV DNA was detected using polymerase chain reaction (PCR) with genotyping.

Bayesian control chart using variable sample size with engineering applications.

In this study, we suggested an innovative approach by introducing an Adaptive Exponential Weighted Moving Average (AEWMA) control chart utilizing Variable Sample Size (VSS) under Bayesian methodology. The proposed methodology utilized an integer linear function to dynamically adjust sample sizes according to the AEWMA statistic. Another appealing feature of our adaptive framework is the integration of the smoothing constant of an EWMA chart, which enhances monitoring responsiveness.