ZnO nanorods grown on ZnSe particles by the chemical vapor deposition method

A novel structure of ZnO nanorods on microsized ZnSe particles has been prepared through a chemical vapor deposition technique using Zn and Se powders as the sources. The dimension of the nanorods can be controlled by adjusting the growth temperature, time and the Zn∈:∈Se ratio. Through the investigation of the effects of synthesis time and Zn∈:∈Se ratio on the formation of ZnO nanorods on ZnSe microparticles, it is proposed that the synthesis of the ZnO-ZnSe structures involves a two-stage formation. The growth of ZnO nanorods can be described by the vapor-solid mechanism. The photoluminescence of the ZnO-ZnSe structures has also been studied.postprin

Effect of synthetic emulsifier and natural biosurfactant on feed process and quality of pelletized feed in broiler diet

A feed production trial was conducted to study the effect of synthetic emulsifier and natural biosurfactant the process and quality of pelletized broiler feed. A corn-soy based broiler diet was formulated with fixed ratio 2:1 of oil-to-water with two types of emulsifiers, namely glyceryl polyethylene glycol ricinoleate synthetic emulsifier and lysophosphatidylcholine natural biosurfactant. T1: Basal diet with no water and no emulsifier; T2: Basal diet with water and no emulsifier; T3: Basal diet with water and synthetic emulsifier glyceryl polyethylene glycol ricinoleate; T4: Basal diet with water and a natural biosurfactant lysophosphatidylcholine as comparative treatment. The treatment diets were manufactured by a commercial feed mill. The electricity cost and meal temperature were measured during the process of milling. Composite samples were collected from different processed points, tested for physical properties, chemical stability and biostability of pelletized feed. Pellet quality of emulsifier supplemented diets was significantly (p<0.05) improved in crumble and pellet intact form. Correlation between emulsifier and pelletize processed cost was not observed in this present study. No deteriorate effect was observed in hydrolytic rancidity (AV), oxidation rancidity (PV), mold count, moisture content and water activity. However, percentage of starch gelatinization on pelletized feed was significantly (p< 0.0001) improved in both types of emulsifier treated diets. These results demonstrated that the addition of emulsifier to broiler diet improved pellet quality to some extent although significant difference between synthetic emulsifier and natural biosurfactant was not observed

Genome sequences of two cold-adaptedCryobacterium spp. SO1 and SO2 from FildesPeninsula, Antarctica

Psychrophilic and psychrotrophic bacteria play important roles in nutrient cycling in cold environments. These bacteria are suitable as model organisms for studying cold-adaptation, and sources of cold-active enzymes and metabolites for industrial applications. Here, we report the genome sequences of two Cryobacterium sp. strains SO1 and SO2. Genes coding major proteins related to cold- or thermal-stress adaptations and those with industrial applications found in their genomes are described

Genome sequences of two cold-adaptedCryobacterium spp. SO1 and SO2 from FildesPeninsula, Antarctica

Psychrophilic and psychrotrophic bacteria play important roles in nutrient cycling in cold environments. These bacteria are suitable as model organisms for studying cold-adaptation, and sources of cold-active enzymes and metabolites for industrial applications. Here, we report the genome sequences of two Cryobacterium sp. strains SO1 and SO2. Genes coding major proteins related to cold- or thermal-stress adaptations and those with industrial applications found in their genomes are described

ENGINEERING CONCEPTS IN ANALYSING LUMBOSACRAL LOAD IN POST-OPERATIVE SCOLIOTIC PATIENTS

Lumbosacral alignment plays a major role in the mechanical low back pain in normal population. Malalignment causes increased strain to the muscles and ligaments around it which eventually leads to mechanical low back pain and discomfort. The level of strain a ligament receives in the lumbosacral junction depends upon the lumbosacral angle and the load exerted on it. If there is an easy way to find the load exerted at the lumbosacral junction, then it would be trouble free for the physicians to examine. Hence, the treatment can be planned accordingly. This study analysis the angle, net force produced and stress faced by the ligaments around the lumbosacral joint in postoperative scoliosis patients using radiographic images. Study design was analytical, observational cross sectional study. Radiographs of 30 patients were collected and one sample ‘t ’test was used for data analysis with ‘p ’value set as 0.05 as level of significance .The mean lumbosacral angle of the postoperative scoliotic patients was found to be 45.56 degrees and the standard deviation was ± 8.7156. The results suggest that patients who underwent scoliosis correction surgery did not have an optimal lumbosacral angle of 30 degrees

Directed differentiation of notochord-like and nucleus pulposus-like cells using human pluripotent stem cells

Intervertebral disc degeneration might be amenable to stem cell therapy, but the required cells are scarce. Here, we report the development of a protocol for directed in vitro differentiation of human pluripotent stem cells (hPSCs) into notochord-like and nucleus pulposus (NP)-like cells of the disc. The first step combines enhancement of ACTIVIN/NODAL and WNT and inhibition of BMP pathways. By day 5 of differentiation, hPSC-derived cells express notochordal cell characteristic genes. After activating the TGF-beta pathway for an additional 15 days, qPCR, immunostaining, and transcriptome data show that a wide array of NP markers are expressed. Transcriptomically, the in vitro-derived cells become more like in vivo adolescent human NP cells, driven by a set of influential genes enriched with motifs bound by BRACHYURY and FOXA2, consistent with an NP cell-like identity. Transplantation of these NP-like cells attenuates fibrotic changes in a rat disc injury model of disc degeneration

Bridging the gap: Increasing awareness of sex differences in opioid addiction using social media platforms

HONORABLE MENTION Background: Current efforts to combat the opioid epidemic in the United States do not take into account the sex differences in opioid response, prescription, use, and addiction. There is a need for medical professionals and the general public to understand these differences to properly prevent, address, and treat opioid addiction. Healthcare professionals and patients often use the Internet and social networking websites to access and share medical information. These platforms provide an innovative way to educate these groups on various topics in medicine. The American Medical Women’s Association (AMWA) created the Opioid Addiction in Women Task Force to positively impact care for women with opioid addiction. Objectives: Increase health literacy surrounding sex differences in opioid addiction in the general public and healthcare providers via social media platforms Methods/Research: The AMWA Opioid Task Force consists of physicians and medical students across the country who meet virtually each month. With guidance from supervising physicians, educational infographics, pamphlets, and videos are created to facilitate the dissemination of complex scientiffc data in a simple and engaging manner. Information is subsequently shared via social media platforms, such as Instagram, Twitter and YouTube, where they can be easily accessed by healthcare providers, medical students, and the public. Conclusions/Impact: This is one of the few organizations with national exposure that highlights sex and gender differences in the opioid crisis and aims to increase health literacy for both the general public and health care providers. We have successfully distributed information regarding sex differences in opioid addiction during Women’s Health Week 2020 on the national AMWA website, Instagram, and Twitter. Our future plans include producing and sharing videos on YouTube about opioids, addiction, and pain management, especially in women. We hope to encourage current and future physicians to initiate discussions surrounding sex/gender-speciffc health, speciffcally in opioid addiction.https://jdc.jefferson.edu/sexandgenderhealth/1003/thumbnail.jp

Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes

Microcavity organic light emitting diodes (OLEDs) have attracted great attention because they can reduce the width of emission spectra from organic materials, enhance brightness and achieve multipeak emission from the same material. In this work, we have fabricated microcavity OLEDs with widely used organic materials, such as N,N'-di(naphthalene-1-yl)-N,N'-diphenylbenzidine (NPB) as a hole transport layer and tris (8-hydroxyquinoline) (Alq) as emitting and electron transporting layer. These organic materials are sandwiched either between two thick silver mirrors or one thin copper and one thick silver mirrors. The influence of total cavity length (from 164 nm to 243nm) and the cavity Q-factor to the emission behavior has been investigated. In all cases, an OLED without bottom mirror, i.e. with the organic materials sandwiched between indium tin oxide and a thick silver mirror, has been fabricated for comparison. We have characterized the devices with photoluminescence, electroluminescence, and reflectance measurements. Multiple peaks have been observed for some devices at larger viewing angles

Gallium vacancy and the residual acceptor in undoped GaSb studied by positron lifetime spectroscopy and photoluminescence

Positron lifetime, photoluminescence (PL), and Hall measurements were performed to study undoped p-type gallium antimonide materials. A 314 ps positron lifetime component was attributed to Ga vacancy (V Ga) related defect. Isochronal annealing studies showed at 300°C annealing, the 314 ps positron lifetime component and the two observed PL signals (777 and 797 meV) disappeared, which gave clear and strong evidence for their correlation. However, the hole concentration (∼2×10 17cm -3) was observed to be independent of the annealing temperature. Although the residual acceptor is generally related to the V Ga defect, at least for cases with annealing temperatures above 300°C, V Ga is not the acceptor responsible for the p-type conduction. © 2002 American Institute of Physics.published_or_final_versio