Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 397 )

2018 ( 709 )

2017 ( 702 )

2016 ( 983 )

Custom range...

Search Results: 1 - 10 of 404534 matches for " Martha M; "
All listed articles are free for downloading (OA Articles)
Page 1 /404534
Display every page Item
Targeting Diabetes Preventive Care Programs: Insights From the 2001 Behavioral Risk Factor Surveillance Survey
Martha M. Phillips
Preventing Chronic Disease , 2004,
Comparing the Effects of Interactive and Noninteractive Complementary Nutrients on Growth in a Chemostat  [PDF]
James P. Braselton, Martha L. Abell, Lorraine M. Braselton
Open Journal of Applied Sciences (OJAppS) , 2013, DOI: 10.4236/ojapps.2013.35042
Abstract: We compare the effects of interactive and noninteractive complementary nutrients on the growth of an organism in the chemostat. We also compare these two situations to the case when the nutrients are substitutable. In previous studies, complementary nutrients have been assumed to be noninteractive. However, more recent research indicates that some complementary nutrient relationships are interactive. We show that interactive complementary and substitutable nutrients can lead to higher population densities than do noninteractive complementary nutrients. We numerically illustrate that if the washout rate is high, an organism can persist at higher densities when the complementary nutrients are interactive than when they are noninteractive, which can result in the extinction of the organism. Finally, we present an example by making a small adjustment to the model that leads to a single nutrient model with an intermediate metabolite of the original substrate as the nutrient for the organism.
Feeding Protected Lysine and Methionine Modifies Milk Protein Profile in Grazing Dairy Cows  [PDF]
Mónica Duque Quintero, Martha Olivera-Angel
Agricultural Sciences (AS) , 2019, DOI: 10.4236/as.2019.102018
Abstract: The experiment was designed to determine the effect of protected lysine (Lys) and methionine (Met) supply on milk protein profile in grazing dairy cows specifically in the caseins (CNs) and α-lactalbumin fractions. Twelve multiparous mid lactation Holstein cows producing 24 (±4.76) kg of milk were assigned to one of two treatments (six cows per treatment) during an experimental period of 21 days. In the control (C) group, cows grazed a Pennisetum clandestinum pasture and were supplemented with a commercial concentrate according to milk production. In the Met-Lys treatment, cows received the same ration supplemented with protected Lys and Met. Milk yield and composition and milk protein profile were measured at the start and the end (21st day) of the experimental period. The Tricine-SDS-PAGE and the Gel-Quant Express Analysis (Invitrogen) software were used to determine milk protein composition. Statistical analysis was performed using the SAS’s PROC MIXED procedure through a mixed model that included the animal as a random effect and the treatments as a fixed effect adjusted by covariables. Milk production averaged 23.7 (±2.0) kg cow-1 day-1 without differences between treatments (P < 0.96). Yield of fat corrected milk (4% FCM) tended (P < 0.10) to increase in the Met-Lys treatment (26.0 kg cow-1 day-1) compared to C (24.2 kg cow-1 day-1). Milk protein content (g/kg) did not differ (C = 30.4; Met-Lys = 31.1) and lactose content tended (P < 0.08) to be higher in the Met-Lys (47.4) group compared to C (45.9). Milk protein content (g/kg) of αS1-CN resulted higher (P < 0.046) in Met-Lys (10.58) compared to C (9.44). Concentration of β-CN also increased (
Alternativas de biofertilización para la producción sostenible de cebolla de bulbo (Allium cepa) en Cucaita, Boyacá
Méndez,Martha; Viteri,Silvio;
Agronomía Colombiana , 2007,
Abstract: the objective of this study was to validate the potential of four biofertilizing alternatives for onion bulb production in cucaita, boyaca, colombia. the treatments evaluated were: 1) bocashi-hen manure, super broth 4, and fertilizer, 2) bocashi-cow manure, super broth 4, and fertilizer, 3) bocashi-hen manure, super broth 4, rhizosphere broth, and fertilizer, 4) bocashi-cow manure, super broth 4, rhizosphere broth, and fertilizer, 5) chemical control, and 6) absolute control. the experimental design was a random complete block with six treatments and four replications. the variables determined were: ′disease incidence′, ′bulb number′, ′disease unaffected bulb weight′, ′disease affected bulb weight′, ′total bulb weight′, and ′bulb diameter′. the results indicated that the bocashis as well as the super 4 and rhizosphere broth contributed to the soil with a great amount and diversity of beneficial microorganisms, which were important for the equilibrium in plant nutrition and plant defence against pathogens. the lowest disease incidence was obtained in the treatments bocashi-hen manure, super broth 4, fertilizer and bocashi-cow manure, super broth 4, rhizosphere broth, fertilizer. in relation to the production variables, though none of the biofertilizing alternatives resulted significantly different to the chemical control, those which include bocashi, super broth 4, rhizosphere broth, and an adequate rate of chemical fertilizer are considered the most promissory because in addition to produce results similar to those obtained with the conventional technique of the farmer since the beginning they have a microbiological and chemical potential which is essential for the sustainability of the production and the environmental quality in the future.
Antibacterial Activity of Moringa ovalifolia and Moringa oleifera Methanol, N-Hexane and Water Seeds and Bark Extracts against Pathogens That Are Implicated in Water Borne Diseases  [PDF]
Dorothea H. P. Shailemo, Habauka M. Kwaambwa, Martha Kandawa-Schulz, Titus A. M. Msagati
Green and Sustainable Chemistry (GSC) , 2016, DOI: 10.4236/gsc.2016.62006
Abstract: Antibacterial activity of methanol, n-hexane and water extracts of seeds and bark of Moringa oleifera and Moringa ovalifolia was conducted. The causative agents of common bacterial infections that are thought to cause water-borne diseases, namely, Escherichia coli, Enterococcus faecalis, and Bacillus cereus were chosen for the study. The paper-disc diffusion method was used with treatments arranged in a completely randomized design and replicated four times. The M. oleifera extracts showed more inhibitory effect than those of M. ovolifolia. The conventional antibiotic Ampicilin generally showed higher inhibitory effect than the extracts of both M. oleifera and M. ovalifolia. The inhibitory effect varied depending on the solvent used. The n-hexane extracts of both seeds and bark of M. ovalifolia and M. oleifera had almost the same inhibition activities (6 ± 1 mm mean inhibition zones) on B. cereus, E. coli
HIV clinic caregivers’ spiritual and religious attitudes and behaviors  [PDF]
Elizabeth A. Catlin, Jeanne H. Guillemin, Julie M. Freedman, Mary Martha Thiel
Health (Health) , 2010, DOI: 10.4236/health.2010.27120
Abstract: Based on prior research, we hypothesized that staff in an outpatient clinic caring for an HIV patient population might rely on religious and spiritual frameworks to cope with the strains of their work and that their responses to a spiritual and religious survey might reflect work-related spiritual distress. Surveys were completed by 78.7% of staff (n = 59). All respondents scored in the "moderate" range for religious and spiritual well-being as well as existential satisfaction with living. The large majority agreed that the religious and spiritual concerns of patients have a place in patient care. Nurses, (88.2% of nurse respondents) viewed assessing the spiritual needs of patients as their responsibility, (p = 0.03). While 82% of HIV clinic respondents privately prayed for patients always, often or sometimes, this did not include physicians. Physicians in this clinic setting appeared to be less spiritual and religious, based on their survey responses, than coworkers and than US physicians in general. The majority of clinic physicians (78%) believed that God does not suffer with the suffering patients, in contrast to the majority of support staff (69%) and nearly half of the nurses, who believed that God does suffer with them, (p = 0.018). Contrary to our expectation, respondents did not report work-related spiritual distress, which may be related to improved therapies that can prolong and improve patients’ lives. Survey data revealed, however, a surprising level of engagement in and reliance on spiritual and religious frameworks among nurses and support staff. Whether the absence of measured spiritual distress is linked, in a causal rather than random manner, to spiritual and religious reliance by certain of these health care providers, is unknown.
Relationship between Dual-Energy X-Ray Absorptiometry-Derived Appendicular Lean Tissue Mass and Total Body Skeletal Muscle Mass Estimated by Ultrasound  [PDF]
Takashi Abe, Nicole C. Dabbs, Vinayak K. Nahar, M. Allison Ford, Martha A. Bass, Mark Loftin
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.46049

Dual-energy X-ray absorptiometry (DXA) is an attractive method for evaluating sarcopenia, age-related loss of skeletal muscle mass and function, using appendicular lean tissue (aLT) mass for criteria of diagnosis, although minimal radiation is exposed. Skeletal muscle (SM) mass can be estimated by using ultrasound-measured muscle thickness (MTH). However, the association between these two methods is unclear. To examine the relationship between DXA-derived aLT mass and total body SM mass estimated by ultrasound, thirty-six healthy adults (18 men and 18 women) aged 19 - 65 years participated in this study. Ultrasound-measured muscle thickness was used to estimate the total SM mass. DXA was used to estimate whole body and regional body composition, and aLT mass was considered equivalent to the sum of lean tissue in both the right and left arms and legs. Total SM mass (26.3 ± 4.4 kg for men and 15.7 ± 2.6 kg for women) estimated by ultrasound was similar to DXA-estimated aLT mass (24.5 ± 3.8 kg for men and 15.7 ± 2.7 kg for women). There was a strong correlation between DXA-measured aLT mass and total SM mass estimated by ultrasound in men (r = 0.927, n = 18) and women (r = 0.931, n = 18) as well as overall sample (r = 0.975, n = 36). The ratio of total SM mass to aLT mass was 1.07 for men and 1.00 for women. These results suggest that DXA-derived aLT mass can be accurately predicted from ultrasound estimated total SM mass, although the predicted value may

Action of protoporphyrin-IX (PP-IX) in the lifespan of Drosophila melanogaster deficient in endogenous antioxidants, Sod and Cat  [PDF]
Emilio Pimentel, Luz M. Vidal, Martha Patricia Cruces, Mariusz Krzysztof Janczur
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.34A2001
Abstract: Protoporphyirin-IX (PP-IX) is a precursor of the biosynthesis of the hemo group, most of the cytochromes and the chlorophylls. The PP-IX is used for medical purposes, and recently a report indicated that it exhibits a dual action since it can decrease or increase the genetic damage caused by N-nitroso-N-ethylurea (ENU) in somatic cells of Drosophila. PP-IX is known to be able to act as an anti-or pro-oxidant agent. The aim of the present research was to study the role of PP-IX on the lifespan of Drosophila melanogaster, taking into account the fact that increasing levels of ROS can accelerate the aging process. The Canton-S strain (CS) was used as well as Sod and Cat which are deficient in the endogenous enzymes, superoxide dismutase and catalase, respectively. Groups of females and males were treated separately with 5 mg/ml of PP-IX solution. The comparison of survival curves indicates that this pigment extended the lifespan of CS. In contrast, Sod strain showed that the opposite effect and had no effect in Cat strain. The fact that PP-IX reduces the mean lifespan in Sod deficient strain might suggest a pro-oxidant action of PP-IX, and consequently the cumulating of ROS as a superoxide could have a mutagenic effect as was shown recently. The results presented evidence of the dual effect of PP-IX.
Adsorptive Removal from Aqueous Solution of Cr(VI) by Green Moringa Tea Leaves Biomass  [PDF]
Candice C. Timbo, Martha Kandawa-Schulz, Marta Amuanyena, Habauka M. Kwaambwa
Journal of Encapsulation and Adsorption Sciences (JEAS) , 2017, DOI: 10.4236/jeas.2017.72008
Abstract: Hexavalent chromium, Cr(VI), is a toxic metal present in industrial effluents. The study was carried to test the use of green Moringa leaves biomass as adsorbent for Cr(VI) from aqueous solutions. Batch adsorption method was used and the concentration of Cr(VI) measured using an ultraviolet-visible (UV-Vis) spectrophotometry. The effects of the adsorption contact time, adsorbent dosage, pH, initial adsorbate concentration and temperature were studied. Results show maximum removal of Cr(VI) of 99% ± 1%, with maximum adsorption capacity of 33.9 mg/g at a pH 2, 60 minutes contact time and 100 mg/l initial Cr(IV) concentration. The Langmuir and Freundlich adsorption isotherm models were used to fit the experimental data. The data showed that adsorption on green Moringa oleifera leaves tea biomass fitted well to Freundlich isotherm (r2 = 0.9432) compared to the Langmuir isotherm (r2 = 0.9122). M. oleifera leaves biomass can be used in water purification systems. The sludge of M. oleifera leaves is biodegradable, cost effective and environmentally friendly and therefore attractive in hexavalent chromium removal in water.
Magnetic Iron Oxide Nanoparticles Modified with Moringa Seed Proteins for Recovery of Precious Metal Ions  [PDF]
Marta O. N. Amuanyena, Martha Kandawa-Schulz, Habauka M. Kwaambwa
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2019, DOI: 10.4236/jbnb.2019.102008
Abstract: Precious metals are highly demanded economic value metals that require to be recovered from industrial wastes and electronic used products (e-waste). They are such as gold (Au) as well as Platinum Group Metals (PGMs) for instance palladium (Pd) and platinum (Pt). The study was conducted to test the magnetic iron oxide nanoparticles modified with Moringa oleifera seed proteins as adsorbent for recovery of Au(III), Pd(II) and Pt(IV) from aqueous solutions. Different functional groups responsible for adsorption, morphology, thermal stability, and surface charges of the nanoparticles were characterized with FTIR, SEM, TGA and Zeta potential respectively. Batch adsorption method was used, and precious metal ions percentage recovery was measured using ICP-OES. The effects of pH, initial adsorbate concentration, adsorption agitation time and adsorbent dosage were studied at room temperature of 25°C. Au(III) yielded a maximal recovery of 99.8%, followed by Pt(IV) with 87.7%, then Pd(II) with 72.7% at a pH 2.5, 10 mg/L initial adsorbate concentration, 120 minutes agitation time and 0.065 g adsorbent dosage. These results suggested that modified iron oxide nanoparticles were effective in selective recovery of the precious metal ions.
Page 1 /404534
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.