Ritesh Kumar

This article presents a compact quad-port MIMO antenna for 5G NR mm-Wave applications. Initially, an ICE-POP structured single-element antenna is designed and then transformed into a four-port MIMO configuration. The proposed antenna provides an ultra-wide bandwidth of 23.5–45 GHz (21.5 GHz), covering the 5G NR bands n257, n258, n259, and n260. Fabricated on Rogers RT/Duroid 5880 with overall dimensions of 24 × 24 × 0.8 mm³, the antenna incorporates a 3 × 3 circular-ring defected ground structure (DGS) to achieve isolation better than − 25 dB. It exhibits a peak gain of 6.75 dBi, radiation efficiency of 98%, and satisfactory MIMO performance in terms of ECC, DG, CCL, and TARC. The antenna was designed and analyzed using HFSS, followed by fabrication and experimental validation.

Ritesh Kumar, Country Lead, Wiley and Bhuvan Desai, VP of operations, Uplers

Alzheimer's disease (AD) is characterized by cognitive decline and sleep dysregulations. Nuclear factor erythroid 2–related factor2 (NRF2) regulates antioxidant and cytoprotective pathways.

Abstract: Natural language interfaces to databases have traditionally suffered from three structural limitations: exclusive targeting of relational

Particulate matter (PM) pollution is one of the most pressing air quality challenges in India. Sources such as road dust play a substantial role, contributing significantly to the ambient PM. Given the significant contribution of road dust to particulate pollution, a large share of the National Clean Air Programme (NCAP) funding was utilised in managing road dust in polluted cities. In India, road cleaning is carried out through manual, mechanical, and water-based methods, and, in some cities, vacuum-assisted sweeping.

Ambient IoT (A-IoT) is an emerging paradigm that enables connectivity for iot devices powered by ambient eh or rf wireless power transfer (WPT). This survey provides a holistic and detailed overview of the technology landscape, starting with device classification and environmental impact, and moving on to use cases and ongoing standardization efforts in 3gpp, ieee, and etsi. It reviews the technological building blocks of A-IoT devices, including energy harvesting and power management circuits, low-power wake-up and backscatter radios, and approaches for on-device and edge intelligence. At the network level, the paper explores architectures and protocols for WPT, low-power protocols for both backscatter and active communication, solutions for resource management, and A-IoT security protocols. Practical insights are drawn from experimental testbeds and real-world deployments. Finally, the survey outlines major research directions, from scalable WPT and interoperable protocols to context-aware scheduling, lightweight security, and reproducible field trials. This work provides a roadmap for researchers and industry to advance A-IoT as an integral part of future 6G networks.

Distal radius fractures (DRFs) are among the most common injuries in orthopedic practice and exhibit a bimodal age distribution, comprising high-energy injuries in younger patients and low-energy, osteoporosis-related fractures in older adults. Many heal well with closed reduction and cast immobilization, but a substantial proportion are unstable or displaced, prompting consideration of surgery. Over the past two decades, volar locking plate (VLP) fixation has become the dominant operative technique. However, randomized trials and recent meta-analyses consistently show that superior radiographic restoration does not reliably translate into superior patient-reported functional outcomes and that this discrepancy may become more pronounced with age. Many older adults with lower functional demands gain no clinically meaningful functional advantage from surgery, whereas younger, higher-demand patients and those with substantially displaced intra-articular fractures may benefit. Current guidelines therefore treat 65 years as a pragmatic threshold beyond which the functional benefits of surgery tend to diminish. This review summarizes the relevant anatomy, the evolution of classification systems, evaluation and imaging, comparative treatment evidence, management in older adults, complications, and rehabilitation.

The hemi-peroneus longus tendon (HPLT) is an alternative autograft for anterior cruciate ligament (ACL) reconstruction intended to preserve part of the donor tendon. This study evaluated knee function, donor-site morbidity, and objective limb recovery during the first postoperative year.

A company acquired through the Corporate Insolvency Resolution Process (CIRP) under the Insolvency and Bankruptcy Code, 2016 (IBC) often comes with assets of the Corporate Debtor which the Directorate of Enforcement (ED) has attached under the Prevention of Money Laundering Act, 2002 (PMLA). While the Successful Resolution Applicant (SRA) may acquire the rights and title to such attached properties under the Resolution Plan approved by the National Company Law Tribunal (NCLT), that would not automatically wipe out the continuation of the attachment over properties by the ED. In such peculiar circumstances, Section 32A of the IBC holds the key to release or restoration of these attached properties to the Corporate Debtor, who is now being driven and controlled by the SRA.

Extreme heat and polluted air aren't typically seen as related phenomena, even though they are. Rising temperatures and air pollution feed each other chemically and physically, creating greater risks together. Ground-level ozone is a clear example. Since this harmful pollutant forms faster in hot, sunny weather, a heat wave can push it to dangerous concentrations.