Multi-band ultrathin reflective metasurface for linear and circular polarization conversion in Ku, K, and Ka bands.

Linear polarization (LP) and circular polarization (CP) holds paramount importance in Ku, K, and Ka bands for satellite based communication, and remote sensing applications. Satellite based remote sensing applications face challenges like atmospheric attenuation, noise & interference, and signal degradation. Moreover, satellite based communication application demands CP in two distinct, non-adjacent frequency bands with orthogonal polarizations at greater oblique angles, considering the unpredictable incidence angles of electromagnetic (EM) waves.

Glycine Improved Cryopreserved Spermatozoa Quality in Achai Bull.

Achai is a small size cattle breed, resilient to harsh and cold environment. Cryopreservation of Achai bull semen may help to improve its genetics and preserve the germplasm. Reactive oxygen species (ROS) affects the structural and functional integrity of the spermatozoa.

and studies on clinically important enzymes inhibitory activities of flavonoids isolated from .

The genus is known to contain diterpenoids, and several isolated compounds which exhibited biological activities including significant multidrug resistance reversal effects. This work is focused on the isolation, and studies of two natural bio-active flavonoids ( & ) isolated from bark for the very first time. The phytochemical investigation resulted in the identification of two flavonoids: 3,5,7-trihydroxy-2-(4-hydroxy-3-methoxyphenyl)-6-methoxy-4H-chromen-4-one and 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-6-methoxy-4H-chromen-4-one , which were isolated for the first time from .

Improved Position Accuracy of Foot-Mounted Inertial Sensor by Discrete Corrections from Vision-Based Fiducial Marker Tracking.

In this paper, we present a novel pedestrian indoor positioning system that uses sensor fusion between a foot-mounted inertial measurement unit (IMU) and a vision-based fiducial marker tracking system. The goal is to provide an after-action review for first responders during training exercises. The main contribution of this work comes from the observation that different walking types (e.

Kangaroo mother care: need of the day.

Each year approximately 20 million low birthweight babies are born globally. Prematurity is a leading cause of neonatal mortality in developing countries and results in 60%-80% of neonatal deaths. Neonatal mortality is the major contributor to under-5 mortality.

Potent leishmanicidal and antibacterial metabolites from .

Inspired from the leishmanicidal and antibacterial potential of the fractions obtained from the crude extract of stem, the anti-leishmanial ethyl acetate fraction was subjected to chromatographic separation, leading to the isolation of a new compound ferruginan () and a known compound (+)- cycloolivil (). The structures of and were determined by various spectroscopic techniques and were assayed for their antibacterial and leishmanicidal potential. Compound showed 75% inhibition after 24 h of incubation and 98% inhibition after 48 h of incubation against KWH23 promastigotes at 100 μg/mL concentration, while compound exhibited 73% and 96% inhibition at the same concentration and incubation time.

Endoscopic dacrocystorhinostomy in lacrimal canalicular trauma.

A case is presented where the common insertion of the upper and lower canaliculus of the lacrimal sac was repaired using endoscopic dacrocystorhinostomy (DCR) techniques, with silicone stenting and securing of stents intranasally.

Histopathological diagnosis and outcome of paediatric nephrotic syndrome.

Objective: To determine the histological picture and outcome of treatment in cases of childhood nephrotic syndrome who needed renal biopsy.

Design: An analytical study.

Place And Duration Of Study: Department of Paediatrics, King Edward Medical College, and Mayo Hospital, Lahore from 1st June 1996 to 31st December, 2001 over a period of 5-1/2 years.

Investigation of new indirect spectrophotometric method for the determination of carbofuran in carbamate pesticides.

A new spectrophotometric method has been investigated for the determination of Carbofuran pesticide. The method was based on the hydrolysis of the pesticides. The hydrolyzed products, methylamine on reaction with sodium nitroprusside solution in acetone medium gives a purple colored solution.