384 research outputs found
Geminivirus–Vector Relationship
No full textGeminiviruses are the most abundant plant viruses. This group of ssDNA virusesinfects a wide range of hosts including weeds, ornamentals, as well as economicallyimportant crops and is widely distributed on the planet Earth. Geminivirusescause some of the most damaging and economically important diseases of cropplants. This chapter summarizes biological and molecular aspects of therelationships between geminiviruses and their vectors.Fil: Bejerman, Nicolas. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigaciones Agropecuarias. Instituto de Patología Vegetal; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigaciones Agropecuarias. Unidad de Fitopatología y Modelización Agrícola - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Unidad de Fitopatología y Modelización Agrícola; Argentin
Cross sectional study evaluating the correlation of thyroid dysfunction with severity of disease in rheumatoid arthritis
No full textBackground: The present study was conducted to evaluate the correlation of disease severity in RA and thyroid dysfunction.Methods: The present cross-sectional descriptive study enrolled 164 participants aged 12 years and above diagnosed as having RA. Use of drugs causing thyroid dysfunction, malignancy, diabetes mellitus, systemic hypertension, pregnancy and prior thyroidectomy were the criteria for exclusion. Data was analyzed using R and tests of significance were Chi square test and independent sample t-test and Pearson correlation. Institutional ethics committee approved the study and written informed consent was obtained from all study participants.Results: Serum TSH positively correlated with DAS 28 (r=0.2, p=0.005), ESR (r=0.2, p=0.03), CRP (r=0.2, p=0.006), RA factor (r=0.2, p=0.003), subjective assessment (r=0.3, p= 0.001) and anti TPO antibodies (r=0.7, p=0.001). Free T4 negatively correlated with DAS28 (r=-0.2, p=0.006), ESR (r=-0.2, p=0.02), CRP (r=-0.2, p=0.01). RA factor (r=-0.2, p=0.01), subjective assessment (r=-0.2, p= 0.01), anti TPO (r=-0.6, p=0.001) and Free T3 negatively correlated with DAS28 score (r=-0.2, p=0.02) , ESR (r=-0.2, p=0.03), RA factor (r=-0.3, p=0.001) and anti TPO antibodies (r=- 0.3, p=0.001).Conclusions: Hypothyroidism was significantly associated with disease severity of RA with linear positive correlation of TSH with DAS28 score, ESR, CRP, RA factor, subjective assessment and anti TPO antibodies, linear negative correlation of serum free T4 with DAS 28 score, ESR, CRP, RA factor, subjective assessment and anti TPO antibody and linear negative correlation of free T3 with DAS28 score, ESR, RA factor and anti TPO antibody was observed
Hollow Cathode Gas Flow Sputtering of Nickel Oxide Thin Films for Hole‐Transport Layer Application in Perovskite Solar Cells
No full textVinoth Kumar SHB, Muydinov R, Maticiuc N, et al. Hollow Cathode Gas Flow Sputtering of Nickel Oxide Thin Films for Hole‐Transport Layer Application in Perovskite Solar Cells. Advanced Energy and Sustainability Research. 2023.Nickel oxide (NiO1+δ) is a versatile material used in various fields such as optoelectronics, spintronics, electrochemistry, and catalysis which is prepared with a wide range of deposition methods. Herein, for the deposition of NiO1+δfilms, the reactive gas flow sputtering (GFS) process using a metallic Ni hollow cathode is developed. This technique is distinct and has numerous advantages compared to conventional sputtering methods. The NiO1+δfilms are sputtered at low temperatures (100 ºC) for various oxygen partial pressures during the GFS process. Additionally, Cu‐incorporated NiO1+δ(CuxNi1−xO1+δ) films are obtained with 5 and 8 at% Cu. The thin films of NiO1+δare characterized and evaluated as a hole‐transporting layer (HTL) in perovskite solar cells (PSCs). The NiO1+δdevices are benchmarked against state‐of‐the‐art self‐assembled monolayers (SAM) ([2‐(3,6‐dimethoxy‐9H‐carbazol‐9‐yl)ethyl]phosphonic acid (also known as MeO2PACz)‐based PSCs. The best‐performing NiO1+δPSC achieves an efficiency (η) of ≈16% without a passivation layer at the HTL interface and demonstrates better operational stability compared to the SAM device. The findings suggest that further optimization of GFS NiO1+δdevices can lead to higher‐performing and more stable PSCs
Finite and Infinite Generalized Back Ward q-Derivative Operator on its Application
No full textIn this paper, the author define the generalized q-derivative oprator and obtain its relation with shift operator.Also, we present the discrete version of Leibtz theorem according to the generalized qderivative operator.By defining its inverse,and using Stirling numbers of first kind, we establish formula for the sum of higher power of geometric progression in the field of first of Number Analysis
Flexible and microporous chitosan hydrogel/nano ZnO composite bandages for wound dressing: In vitro and in vivo evaluation
No full textNo Full Tex
Study of Heat Affected Zone of a Weld in 9Cr-1.8W-0.5Mo Steel for Power Plant Application
No full textM.Tech. (Metallurgical and Materials Engineering)Continuous improvement in steam parameters for achieving higher efficiencies led to the
development of many new creep resistant steels in thermal power plant industry. As welding
is the major fabrication technique used in power plant construction, these creep resistant steel
should possess good weldability and in-service life condition.
This thesis contains a presentation of basic problems appears in service at Heat Affected
Zones (HAZs) of membrane panels and high temperature pipe lines made of tempered
bainitic/martensitic creep resistant 9Cr-1.8W-0.5Mo (Grade 92) steel used for boilers
operating at supercritical parameters. The HAZs of these components often experience
Type-IV creep crack due to micro-coalescence of creep voids at operating temperature.
Welding thermal cycles had been simulated with Finite Element Simulation using
SYSWELD and with these thermal cycles physically HAZs had been simulated and studied
for its microstructure, hardness and toughness in-situ comparison with real time HAZ during
welding. The experimental results will be used to study the creep failure to develop a further
modification in the parent metal, which can serve as a bench mark for the future development
of creep strength enhanced steel
Exploration of alginate hydrogel/nano zinc oxide composite bandages for infected wounds
No full textAnnapoorna Mohandas,* Sudheesh Kumar PT,* Biswas Raja, Vinoth-Kumar Lakshmanan, Rangasamy Jayakumar Amrita Centre for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham University, Kochi, India *These authors contributed equally to this work Abstract: Alginate hydrogel/zinc oxide nanoparticles (nZnO) composite bandage was developed by freeze-dry method from the mixture of nZnO and alginate hydrogel. The developed composite bandage was porous with porosity at a range of 60%–70%. The swelling ratios of the bandages decreased with increasing concentrations of nZnO. The composite bandages with nZnO incorporation showed controlled degradation profile and faster blood clotting ability when compared to the KALTOSTAT® and control bandages without nZnO. The prepared composite bandages exhibited excellent antimicrobial activity against Escherichia coli, Staphylococcus aureus, Candida albicans, and methicillin resistant S. aureus (MRSA). Cytocompatibility evaluation of the prepared composite bandages done on human dermal fibroblast cells by Alamar assay and infiltration studies proved that the bandages have a non-toxic nature at lower concentrations of nZnO whereas slight reduction in viability was seen with increasing nZnO concentrations. The qualitative analysis of ex-vivo re-epithelialization on porcine skin revealed keratinocyte infiltration toward wound area for nZnO alginate bandages. Keywords: alginate, hydrogel, ZnO nanoparticle, hemostatic, antimicrobial activity, wound healin
A Study on Minimal Hepatic Encephalopathy in Cirrhotics.
No full textINTRODUCTION :
Hepatic encephalopathy includes a spectrum of transient and reversible
neurological and psychiatric manifestations usually found in patients with
chronic liver disease and portal hypertension. Its occurrence indicates a poor
prognostic factor with a projected one year survival rate of 43%. It occurs in
50% to 70% of cirrhotic patients. The least severe form of hepatic
encephalopathy, which is not recognized on clinical examination is Minimal
hepatic encephalopathy (MHE). It impairs health related quality of life
(HRQOL). It can be detected by using sensitive tests like number connection
tests, line tracing tests and figure connection tests, EEG, visual, auditory and
somatosensory evoked potentials. Ammonia levels are found to be elevated in
patients with minimal hepatic encephalopathy and therefore can play a role in
the causation of minimal hepatic encephalopathy. Minimal hepatic
encephalopathy has a subtle but negative impact on a patient’s spatial and
motor skills, the ability to perform complex tasks such as driving, and even
quality of life. Some studies have reported that patients with MHE can progress
and later on develop overt hepatic encephalopathy. Due to its negative impact
on daily living, it has been suggested that the failure to diagnose this condition
could be classified as a medical error.
Helicobacter pylori, a gram negative microaerophilic bacteria produces ammonia from urea, which is absorbed in the gastric lumen into circulation.Infection with these bacteria can result in hyperammonemia and hepatic encephalopathy and eradication of these bacteria results in decreased ammonia levels.
AIM AND OBJECTIVES :
1. To study the incidence of minimal hepatic encephalopathy in asymptomatic cirrhotics.
2. To study the prevalence of helicobacter pylori in asymptomatic cirrhotics with minimal hepatic encephalopathy.
CONCLUSION : This study shows the high incidence of minimal hepatic encephalopathy
in asymptomatic cirrhotic patients. This study proves that the prevalence of H.pylori is markedly high in patients with minimal hepatic encephalopathy
ANTIDIABETIC POTENTIAL OF MARINE RED ALGA CHAMPIA PARVULA (C. AGARDH) BY INHIBITING KEY METABOLIC ENZYMES
No full text- …
