Biotreatment of anthraquinone dye Drimarene Blue K2RL

Drimarene Blue (Db) K2RL is a reactive anthraquinone dye, used extensively in textile industry, due to poor adsorbability to textile fiber; it has a higher exhaustion rate in wastewater. The dye is toxic, carcinogenic, mutagenic and resistant to degradation. Decolorization of this dye was studied in two different systems. Shake flask study, using the same immobilized fungus Aspergillus niger SA1 with increasing concentration (10 - 300 ppm) of dye resulted in 75% decolorization in 24 h with 10 ppm concentration, while the higher the concentration of dye, the lower the values (68% at 25 ppm, 40% at 50 ppm, 11% at 100 ppm, 3% at 200 ppm and 2% at 300 ppm) of decolorization (p < 0.05). Simulated textile effluent containing 10 ppm dye Db K2RL was tested aerobically using sludge in stirred tank reactor (STR) at 30ºC for 8 days. The values achieved of chemical oxygen demand (COD) reduction and decolorization were 84% (r = 0.968) and 30% (r = 0.905), respectively. This study revealed that immobilized fungus A. niger SA1 have potential, while sludge containing bacterial consortium have limited potential to be used as bioremediation for textile dye Drimarene Blue K2RL

Up-flow immobilized fungal Column Reactor for the Treatment of Anthraquinone dye Drimarene blue Ksub>2RL

This research work is on the decolorization of a reactive anthraquinone dye Drimarene blue (Db) K2RL, which is known for its markedly usage in textile industry. Due to poor adsorbability to textile fiber, it has a higher exhaustion rate in wastewater. The main objective of our research work was to evaluate the potential of an Up-flow Column reactor (UFCR) (13x1.7//) containing the fungal strain, Aspergillus niger SA1 (immobilized on support material Scotch-BriteTM) for the decolorization of a dye, Db K2RL, insimulated textile effluent. Different concentrations of dye in the effluent were treated in the reactor for 24 h, with a flow rate of 10 mL-1 at hydraulic retention time (HRT) of 10 h. Using anoxic UFCR, decolorization of the effluent was observed maximum, that is, 94.26% at 10 ppm of dye; however, it reduced to 58.51% at 300 ppm of dye. A trend towards increase ( 15%) in decolorization of effluent was noted, when the effluent was aerated prior to treatment. Recycling of the effluent containing dye increased the decolorization (85% at 130 ppm of dye; 66% at 500 ppm of dye), however, further recycling decreased the rate of decolorization, which might be due to desorption by the immobilizedfungus. The results of these findings providing important insights into the development of effective treatment technology for bioremediation of textile dyes

Design and Optimization of an Ultra-Low-Power Cross-Coupled LC VCO with a DFF Frequency Divider for 2.4 GHz RF Receivers Using 65 nm CMOS Technology

This article presents the design and optimization of a tunable quadrature differential LC CMOS voltage-controlled oscillator (VCO) with a D flip-flop (DFF) frequency divider. The VCO is designed for the low-power and low-phase-noise applications of 2.4 GHz IoT/BLE receivers and wireless sensor devices. The proposed design comprises the proper stacking of an LC VCO and a DFF frequency divider and is simulated using a TSMC 65 nm CMOS technology, and it has a tuning range of 4.4 to 5.7 GHz. The voltage headroom is preserved using a high-impedance on-chip passive inductor at the tail for filtering and enabling true differential operation. The VCO and frequency divider consume as low as 2.02 mW altogether, with the VCO section consuming only 0.47 mW. The active area of the chip including the pads is only 0.47 mm2. The designed VCO achieved a much better phase noise of −118.36 dBc/Hz at a 1 MHz offset frequency with 1.2 V supply voltages. The design produced a much better FoM of −196.44 dBc/Hz compared to other related research

Improvements in Skeletal Muscle Can Be Detected Using Broadband NIRS in First-Time Marathon Runners

Skeletal muscle metabolic function is known to respond positively to endurance exercise interventions, such as marathon training. Studies investigating skeletal muscle have typically used muscle biopsy samples or magnetic resonance spectroscopy (MRS) to interrogate metabolic function. We aimed to non-invasively detect exercise-training-induced improvements in muscle function using broadband near-infrared spectroscopy (NIRS). We used NIRS to determine concentration changes in oxygenated haemoglobin (HbO2) and the oxidation state of cytochrome-c-oxidase (oxCCO) in gastrocnemius during arterial occlusion in 14 volunteers. We also used a cardio-pulmonary exercise test (CPET) to assess peak total body oxygen uptake (peakVO2; a measure of fitness). Measurements were made at baseline (BL) which was prior to a period of at least 16 weeks of training for the 2017 London Marathon, and then within 3 weeks after completion of the marathon, follow-up (FU). We observed an increase in locally measured muscle oxygen consumption and rate of oxCCO concentration change, but not in cardio-respiratory fitness measured as whole-body peak oxygen consumption (peakVO2)

Prevalence and definition of drooling in Parkinson’s disease: a systematic review

Drooling (saliva loss) is a frequently reported symptom in patients with Parkinson’s disease (PD), but an accurate estimate of the prevalence of drooling is lacking. The aim of this study was to systematically review the prevalence of drooling in published research papers. A systematic PubMed and CINAHL search was done, including studies published until January 2009. Eight studies were found, presenting prevalence rates of drooling based on responses of PD patients to questionnaires. The statistical heterogeneity was highly significant (P < 0.0001), with prevalence rates ranging from 32 to 74%. The pooled prevalence estimate with random effect analysis was of 56% (95% CI 44–67) for PD patients and 14% (95% CI 3–25) for healthy controls; the pooled relative risk (RR) with random effect analysis was 5.5 (95% CI 2.1–14.4). All studies reported data of community dwelling idiopathic PD patients, with a mean age around 65 years and mild PD in 50–60% of the cases. Heterogeneity was mainly caused by differences in definition or frequency of drooling. The highest prevalence rates included nocturnal drooling where others noted only diurnal drooling. Analysis of the data of two studies showed that drooling is reported frequently by 22–26% of the patients. Prevalence rates were lower in milder PD patients. The summarized findings demonstrate that drooling can be present in half of all PD patients. In about a quarter of PD patients, drooling appears to be a frequently occurring problem. We recommend to report drooling in future studies with more detailed consideration of severity, frequency and nocturnal versus diurnal complaints

Multiple etiologies of axonal sensory motor polyneuropathy in a renal transplant recipient: a case report

<p>Abstract</p> <p>Introduction</p> <p>Neurological complications leading to morbidity and mortality are not frequent in renal transplant recipients. Here, we report a renal transplant recipient who presented with diminished strength in his limbs probably due to multiple etiologies of axonal sensorimotor polyneuropathy, which resolved with intravenous immunoglobulin.</p> <p>Case presentation</p> <p>A 49-year-old Iranian male renal transplant recipient with previous history of autosomal dominant polycystic kidney disease presented with diminished strength in his limbs one month after surgery. Our patient was on cyclosporine A, mycophenolate mofetil and prednisone. Although a detected hypophosphatemia was corrected with supplemental phosphate, the loss of strength was still slowly progressive and diffuse muscular atrophy was remarkable in his trunk, upper limb and pelvic girdle. Meanwhile, his cranial nerves were intact. Post-transplant diabetes mellitus was diagnosed and insulin therapy was initiated. In addition, as a high serum cyclosporine level was detected, the dose of cyclosporine was reduced. Our patient was also put on intravenous ganciclovir due to positive serum cytomegalovirus immunoglobulin M antibody. Despite the reduction of oral cyclosporine dose along with medical therapy for the cytomegalovirus infection and diabetes mellitus, his muscular weakness and atrophy did not improve. One week after administration of intravenous immunoglobulin, a significant improvement was noted in his muscular weakness.</p> <p>Conclusion</p> <p>A remarkable response to intravenous immunoglobulin is compatible with an immunological basis for the present condition (post-transplant polyneuropathy). In cases of post-transplant polyneuropathy with a high clinical suspicion of immunological origin, administration of intravenous immunoglobulin may be recommended.</p

Clinical Experience with Insulin Detemir: Results from the Bangladesh Cohort of Global A 1 chieve Study

Abstract Objective: To present results from the Bangladesh cohort of the A 1 chieve study receiving insulin detemir (Levemir) ± oral anti diabetic drugs. Methods: Out of 1093 patients recruited from 49 sites in Bangladesh, 370 were initiated on insulin detemir (Levemir).Study visits were defined as baseline, interim (around 12 weeks from baseline) and final (around 24 weeks from baseline) visit. Results: Glycaemic control was poor in all the groups at baseline. In the entire cohort at 24 weeks, significant reductions from baseline were observed in mean HbA 1c (from 10.0 % to 7.2%, p&lt;0.001), FPG (from 10.5 to 6.7 mmol/L, p&lt;0.001) and PPPG (from 15.3 to 8.9 mmol/L, p&lt;0.001) levels. Overall 45.5% of th

Antimicrobial and antioxidant activity of kaempferol rhamnoside derivatives from Bryophyllum pinnatum

Abstract Background Bryophyllum pinnatum (Lank.) Oken (Crassulaceae) is a perennial succulent herb widely used in traditional medicine to treat many ailments. Its wide range of uses in folk medicine justifies its being called "life plant" or "resurrection plant", prompting researchers' interest. We describe here the isolation and structure elucidation of antimicrobial and/or antioxidant components from the EtOAc extract of B. pinnatum. Results The methanol extract displayed both antimicrobial activities with minimum inhibitory concentration (MIC) values ranging from 32 to 512 μg/ml and antioxidant property with an IC50 value of 52.48 μg/ml. Its partition enhanced the antimicrobial activity in EtOAc extract (MIC = 16-128 μg/ml) and reduced it in hexane extract (MIC = 256-1024 μg/ml). In addition, this process reduced the antioxidant activity in EtOAc and hexane extracts with IC50 values of 78.11 and 90.04 μg/ml respectively. Fractionation of EtOAc extract gave seven kaempferol rhamnosides, including; kaempferitrin (1), kaempferol 3-O-α-L-(2-acetyl)rhamnopyranoside-7-O-α-L-rhamnopyranoside (2), kaempferol 3-O-α-L-(3-acetyl)rhamnopyranoside-7-O-α-L-rhamnopyranoside (3), kaempferol 3-O-α-L-(4-acetyl)rhamnopyranoside-7-O-α-L-rhamnopyranoside (4), kaempferol 3-O-α-D- glucopyranoside-7-O-α-L-rhamnopyranoside (5), afzelin (6) and α-rhamnoisorobin (7). All these compounds, except 6 were isolated from this plant for the first time. Compound 7 was the most active, with MIC values ranging from 1 to 2 μg/ml and its antioxidant activity (IC50 = 0.71 μg/ml) was higher than that of the reference drug (IC50 = 0.96 μg/ml). Conclusion These findings demonstrate that Bryophyllum pinnatum and some of its isolated compounds have interesting antimicrobial and antioxidant properties, and therefore confirming the traditional use of B. pinnatum in the treatment of infectious and free radical damages.</p